WO2017157138A1

WO2017157138A1 - Method and apparatus for rf-signal exchange between antenna ports

Info

Publication number: WO2017157138A1
Application number: PCT/CN2017/074275
Authority: WO
Inventors: 刁心玺; 王欣晖
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-03-18
Filing date: 2017-02-21
Publication date: 2017-09-21
Also published as: CN107204809A

Abstract

Disclosed are a method and apparatus for RF-signal exchange between antenna ports. The method for RF-signal exchange between antenna ports comprises: after an RF receiving channel of an input antenna port receives an RF signal from an external device, performing optical modulation on said RF signal to generate an optical signal; using the distributing optical path corresponding to said input antenna port to distribute the optical signal to an optical detection unit; using the optical detection unit to demodulate the optical signal to generate a regenerated RF signal; sending said regenerated RF signal to the RF transmission channels of the K destination antenna ports of a determined local device; K being greater than or equal to 1.

Description

Radio frequency signal exchange method and device between antenna ports

Technical field

This document relates to, but is not limited to, the field of radio communication technologies, and in particular, to a method and device for exchanging radio frequency signals between antenna ports.

Background technique

At present, microwave fixed access technology has been maturely applied to the backhaul transmission of base stations. In the subsequent development of cellular mobile communication networks and wireless access networks, high-density deployment of base stations has the following new requirements for wireless backhaul: 1) wireless backhaul channels Need to adapt to the large bandwidth fluctuations of data services, such as up to tens of times the bandwidth fluctuations; 2) wireless backhaul channels need to have the ability to efficiently use the spectrum and avoid interference, such as using the spectrum in a flexible space division; 3) wireless backhaul channels It is necessary to overcome the adverse effects of NLOS (Not-Line-of-Sight) channels, such as flexible avoidance of NLOS paths; 4) Wireless backhaul channels need to have high reliability and robustness, such as in a small number of relays. The transmission capability of the backhaul channel is not affected or maintains the basic transmission capability in the event of a node failure.

Wireless backhaul technology is an optional technology for terrestrial mobile communications and a mandatory technology for satellite communications.

The satellite acts as a relay station in the air. A simple analog relay satellite amplifies the electromagnetic wave sent from the earth station and then sends it back to another earth station. For example, the previous satellite TV transmission uses analog frequency modulation system, and the television program exchange uses the whole world. Beam transponder and earth station.

The spaceborne multi-beam in satellite communication can increase the transmission capacity several times. The multi-beam antenna can form multiple spot beams, each spot beam covers a specific ground area, and the multi-spot beam can improve the spectrum efficiency by using space isolation; The real-time nature of satellite transmission proposes an on-board switching technology that is compatible with multi-beam technology. In the on-board switching mode, communication between two users on the ground can be completed with one click, avoiding the use of ground switching multiple times. Up and down transmission reduces the transmission delay. The current on-board switching is divided into circuit switching and packet switching. In order to realize information exchange between spot beams, MSM (Microwave Switching Matrix) is set on the satellite, and the on-board interaction enables all service exchanges to be completed on the star.

Satellite communication systems use a variety of on-board routing and switching technologies, such as on-board circuit switching, on-board IP switching, on-board ATM (Asynchronous Transfer Mode) switching, on-board message switching, and on-board frame relay. .

In the subsequent development of cellular mobile communication networks and wireless access networks, high-density deployment of base stations has the following new requirements for wireless backhaul: 1) wireless backhaul channels need to adapt to large bandwidth fluctuations of data services, such as up to several tens of times of bandwidth. Fluctuations; 2) Wireless backhaul channels need to have the ability to efficiently use spectrum and avoid interference, such as using spectrum in a flexible space division; 3) wireless backhaul channels need to overcome the adverse effects of NLOS (non-line of sight) channels, such as flexible evasion of NLOS The appearance of the path; 4) the wireless backhaul channel needs to have a low transmission delay, such as the transmission delay of the multi-hop wireless backhaul transmission is less than 1 millisecond; 5) the wireless backhaul channel needs to have high reliability and robustness, such as in a small amount The transmission capability of the backhaul channel is not affected or maintains the basic transmission capability in the event of a node failure.

Among them, the medium-term (2015-2020) requirements for wireless backhaul include: 1) the capacity of macro base stations in urban dense environments is 1G or several Gbit/s, and the distance from optical fibers to 200 meters to 1km; 2) urban dense environment The capacity of the micro base station is tens to hundreds of megabits, the distance from the micro base station to the optical fiber is less than 200 meters to 1km; 3) the capacity of the suburban macro station is several megabytes to several hundred megabytes, and the distance from the optical fiber to several kilometers to 15 kilometers Kilometers; 4) Front-Haul (forward return) capacity is 1-10 Gbit/s per sector and requires low latency. The long-term (2020-2030) demand for wireless backhaul (5G expected indicators) includes: 1) user plane delay in the 1ms range; 2) million connections per square kilometer; 3) peak rate tens of Gbit/s; The user's basic data transmission rate is 1 Gbit/s; 5) The transmission capacity per square kilometer is Tbytes/s. The evolution indicators of LTE-A (Evolution of LTE) include: 1) a delay of 5-10 times reduction; 2) a 10-100 times increase in the number of simultaneous connections per square kilometer; 3) a peak rate increase of 10-50 times; 4) The user data rate is increased by 10-100 times; 5) the transmission capacity per square kilometer is increased by 100 to 1000 times; among them, the UDN (Ultra Dense Network) wireless backhaul requirements include: transmission capacity of 1 Gbit/s to tens Gbit/s; NLOS wireless backhaul requirements include: NLOS propagation is limited to 6G or less; LOS (Line-of-Sight) can be used for 10G.

Existing wireless backhaul technologies include AD-HOC (no infrastructure network/temporary network construction) technology, MESH (wireless mesh network) technology, and these technologies are still under development, and their existing transmission solutions cannot meet the future wireless Backhaul transmission capability requirements. Faced with the demand goal of wireless backhaul technology, the shortcomings of the wireless backhaul technology in the existing land mobile communication network are: less backhaul path available, backhaul traffic The dynamic range is small, the backhaul node and its spectrum resources are inefficient use, the backhaul path topology reorganization capability is poor, and the backhaul node data forwarding delay is large.

Summary of invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The present invention provides a method and device for exchanging radio frequency signals between antenna ports, which can flexibly configure a backhaul transmission path, a wireless backhaul spectrum, and an RF transmission channel.

The embodiment of the invention provides a method for exchanging radio frequency signals between antenna ports, including:

After the radio frequency receiving channel of the input antenna port receives the radio frequency signal from the external device, the radio frequency signal is optically modulated to generate an optical signal;

Distributing the optical signal to the light detecting unit by using a split light path corresponding to the input antenna port, demodulating the optical signal by using the light detecting unit, generating a regenerated radio frequency signal, and transmitting the regenerated radio frequency signal To the determined RF transmit channel of the K destination antenna ports of the device; K is greater than or equal to 1.

Optionally, the optical signal is distributed to the light detecting unit by using a split light path corresponding to the input antenna port, and the optical signal is demodulated by using the light detecting unit to generate a reproduced RF signal, and the regeneration is performed. The RF signal is sent to the determined RF transmission channel of the K destination antenna ports of the device, including:

Using the 1*N optical splitter corresponding to the input antenna port to divide the optical signal into N paths, and transmitting N optical signals to the input ends of the N optical detecting units;

Determining K destination antenna ports from the N antenna ports according to the obtained radio frequency signal exchange control information, and determining K optical detection units corresponding to the K destination antenna ports from the N optical detection units, Transmitting the determined output signals of the K light detecting units to the radio frequency transmitting channels of the corresponding destination antenna ports;

Wherein each output end of the optical splitter corresponds to a destination antenna port through an optical fiber. An input end of the optical detecting unit is connected, and an output end of the optical detecting unit is connected to an input end of the radio frequency transmitting channel of the destination antenna port through an electric switch; or each output end of the optical splitter passes through the optical fiber and the destination antenna An input end of the tandem optical path corresponding to the port is connected, an output end of the tandem optical path is connected to an input end of the optical detecting unit corresponding to the destination antenna port, and an output end of the optical detecting unit passes the electric switch and the destination antenna port The input terminals of the RF transmission channels are connected; K ≤ N.

The optical signal is divided into N channels by using a 1*N optical splitter corresponding to the input antenna port, and the optical switch is controlled to turn on and off according to the obtained radio frequency signal exchange control information, and the K is strobed from the N optical signals. The road light signal is transmitted to the corresponding K light detecting units, and the output signals of the K light detecting units are transmitted to the RF transmitting channel of the corresponding destination antenna port;

The optical switch is connected to the optical detecting unit corresponding to the destination antenna port, and the optical switch is used to control the input optical path of the optical detecting unit. Or each output end of the optical splitter is connected to the optical switch through an optical fiber, and the optical switch is connected to an input end of the tandem optical path corresponding to the destination antenna port, and the output end of the tandem optical path is The input end of the optical detecting unit corresponding to the destination antenna port is connected; the optical switch is used to control the on and off of the input optical path of the tandem optical path; K≤N.

Optionally, the method further includes:

If m radio frequency signals from an external device are received from m radio frequency receiving channels of one input antenna port, the m radio frequency signals are modulated by different light sources to respectively generate m optical signals having different wavelengths; m ≥2;

Distributing an optical signal of each wavelength to a corresponding light detecting unit by using a split light path corresponding to the input antenna port, and demodulating the optical signal by using a light detecting unit to generate a reproduced RF signal, The regenerated RF signal is sent to the RF transmit channel of one or more destination antenna ports of the device.

Optionally, the optical signal of each wavelength is used by using a split illumination path corresponding to the input antenna port. Distributing to the corresponding light detecting unit, demodulating the optical signal by using the light detecting unit, generating a regenerated radio frequency signal, and transmitting the regenerated radio frequency signal to the radio frequency transmitting of one or more destination antenna ports of the device In the channel, including:

Combining optical signals of different wavelengths of m channels by a combiner, and dividing the optical signals including m kinds of wavelengths into N paths by using a 1*N optical splitter corresponding to the input antenna port, using the 1 * N 1*M wavelength dividers connected to the N output terminals of the N optical splitter separate the optical signals of each wavelength, and transmit the optical signals of each wavelength to the input of the corresponding N optical detecting units. end;

Determining, for each optical signal of each wavelength, K _i destination antenna ports from the N antenna ports according to the obtained radio frequency signal exchange control information, and determining the K from the N*M optical detecting units The K _i light detecting units corresponding to the _i target antenna ports transmit the determined output signals of the K _i light detecting units to the radio frequency transmitting channels of the corresponding destination antenna ports;

Wherein, each output end of the optical splitter is connected to an input end of a 1*M wavelength divider through an optical fiber, and each of the output terminals of the 1*M wavelength divider corresponds to a light detecting unit corresponding to the destination antenna port. Connected to the input end, the output end of the optical detecting unit is connected to the input end of the radio frequency transmitting channel of the destination antenna port through an electric switch; or each output end of the optical splitter passes the optical fiber and 1*M wavelength division The input ends of the 1*M wavelength divider are connected to the input end of the tandem optical path corresponding to the destination antenna port, and the output end of the tandem optical path corresponds to the target antenna port. The input ends of the detecting unit are connected, and the output end of the light detecting unit is connected to the input end of the RF transmitting channel of the destination antenna port through an electric switch; m≤M.

Optionally, the optical signal of each wavelength is distributed to the corresponding light detecting unit by using the split light path corresponding to the input antenna port, and the optical signal is demodulated by using the light detecting unit to generate a regenerated RF signal. And transmitting the regenerated radio frequency signal to the radio frequency transmitting channel of one or more destination antenna ports of the device, including:

Combining optical signals of different wavelengths of m channels by a combiner, and dividing the optical signals including m kinds of wavelengths into N paths by using a 1*N optical splitter corresponding to the input antenna port, using the 1 * N 1*M wavelength dividers connected to the N output terminals of the N optical splitter separate optical signals of each wavelength;

Controlling the opening and closing of the optical switch according to the obtained radio frequency signal exchange control information, and for each optical signal of the wavelength, strobing the K _i optical signal from the N optical signals to the corresponding K _i optical detecting unit, Transmitting the output signals of the K _i photodetecting units to the radio frequency transmitting channels of the corresponding destination antenna ports;

Wherein, each output end of the optical splitter is connected to an input end of a 1*M wavelength divider through an optical fiber, and each output end of the 1*M wavelength divider is connected to an optical switch, and the optical switch The light detecting unit corresponding to the destination antenna port is connected, and the optical switch is used for controlling the on and off of the input optical path of the light detecting unit; or each output end of the optical splitter is passed through the optical fiber and the 1*M wavelength divider. The input ends are connected, and each output end of the 1*M wavelength divider is connected to an optical switch, and the optical switch is connected to an input end of a tandem optical path corresponding to the destination antenna port, and an output end of the tandem optical path is connected The input end of the optical detecting unit corresponding to the destination antenna port is connected; the optical switch is used to control the on and off of the input optical path of the tandem optical path; K≤N.

Optionally, the destination antenna port group that sends the two different radio frequency signals includes at least one different destination antenna port.

Optionally, the method further includes:

If the radio frequency signal from the external device received from the radio receiving channel of the L input antenna ports needs to be sent to a destination antenna port inside the device, the L-channel corresponding to the L input antenna ports is used to The road light signal is sent to the tandem optical path corresponding to the destination antenna port; L is greater than or equal to 1;

Transmitting the L optical signal to a photo detecting unit corresponding to the destination antenna port by using a tandem optical path corresponding to the destination antenna port, and demodulating the L optical signal by using the optical detecting unit And generating an L-channel regenerated radio frequency signal, and transmitting the L-channel regenerated radio frequency signal to the radio frequency transmitting channel of the destination antenna port.

Optionally, the using the splicing optical path corresponding to the destination antenna port to send the L optical signal to the optical detecting unit corresponding to the destination antenna port, including:

Using the L optical switches included in the tandem optical path, the L optical signals are sent in a one-to-one manner to the input end of the L-channel photoelectric conversion channel included in the optical detecting unit corresponding to the destination antenna port, thereby realizing the L path. Parallel transmission of optical signals to L-channel photoelectric conversion channels; or

The L-channel optical signal is sent to the input end of a photoelectric conversion channel included in the light detecting unit corresponding to the destination antenna port by using an optical switch included in the tandem optical path to realize the L-channel optical signal to Time division transmission of a photoelectric conversion channel.

Optionally, the radio frequency transmitting channel of each destination antenna port performs power amplification on the radio frequency signal to be transmitted, or frequency-converts the radio frequency signal to be transmitted, and then performs power amplification.

Optionally, the light detecting unit comprises one or more photoelectric conversion channels, each of which detects an optical signal of one wavelength.

Optionally, the method further includes:

Obtaining backhaul path control information, determining the radio frequency signal exchange relationship between the antenna ports in the wireless node by using the backhaul path control information, and generating radio frequency signal exchange control information.

Optionally, the backhaul path control information includes at least one of the following information:

RF path information between antenna ports in the same wireless node, RF path connectivity information between different wireless nodes, single-hop adjacent wireless node information, path initiation wireless node information and path termination wireless node information, backhaul channel bandwidth information, backhaul channel frequency Information, backhaul traffic channel access guidance information, backhaul control channel access guidance information, backhaul channel reconfiguration information, backhaul channel beam alignment control information.

Optionally, the acquiring the backhaul path control information includes acquiring in any one of the following manners:

a) obtained from a cellular mobile communication network;

b) obtained from the wireless local area network;

c) Acquired from the backhaul path control channel of the wireless backhaul network.

Optionally, determining, by using the backhaul path control information, an RF signal exchange relationship between antenna ports in the wireless node, including:

Controlling the opening and closing of the optical switch or the radio frequency switch according to the indication of the backhaul control information;

The optical switch is used to control the on/off of the transmission path of the optical signal; the radio frequency switch is used to enable or interrupt the radio frequency transmission between the optical detection unit and its corresponding radio frequency transmission channel.

The embodiment of the invention further provides an RF signal exchange device between antenna ports, comprising:

The radio frequency signal receiving module is configured to: after receiving the radio frequency signal from the external device, the radio frequency receiving channel of the input antenna port is optically modulated to generate the optical signal;

An RF signal transmission module configured to use a sub-luminous path corresponding to the input antenna port Distributing the optical signal to the optical detecting unit, demodulating the optical signal by using the optical detecting unit, generating a regenerated radio frequency signal, and transmitting the regenerated radio frequency signal to the determined K destination antenna ports of the device. In the RF transmission channel; K is greater than or equal to 1.

Optionally, the radio frequency signal transmission module is configured to distribute the optical signal to the optical detecting unit by using a sub-illuminating path corresponding to the input antenna port, and demodulate the optical signal by using a photo detecting unit, Generating a regenerated radio frequency signal, and transmitting the regenerated radio frequency signal to the determined radio frequency transmission channel of the K destination antenna ports of the device:

The output end of the optical splitter is connected to the input end of the optical detecting unit corresponding to the destination antenna port through an optical fiber, and the output end of the optical detecting unit passes through the RF transmitting channel of the electrical switch and the destination antenna port. The input ends are connected to each other; or each output end of the optical splitter is connected to the input end of the tandem optical path corresponding to the destination antenna port through an optical fiber, and the output end of the tandem optical path corresponds to the target antenna port The input ends of the detecting unit are connected, and the output end of the light detecting unit is connected to the input end of the RF transmitting channel of the destination antenna port through an electric switch; K≤N.

Wherein each output end of the optical splitter is connected to an optical switch through an optical fiber, and the light is turned on. The optical detection unit is connected to the optical detection unit corresponding to the destination antenna port, and the optical switch is used to control the on and off of the input optical path of the optical detection unit; or each output end of the optical splitter is connected to the optical switch through an optical fiber. The optical switch is connected to the input end of the tandem optical path corresponding to the destination antenna port, and the output end of the tandem optical path is connected to the input end of the optical detecting unit corresponding to the destination antenna port; the optical switch is used for controlling the tandem The on and off of the input optical path of the optical path; K ≤ N.

Optionally, the radio frequency signal receiving module is further configured to: if the m radio frequency signals from the external device are received from the m radio frequency receiving channels of one input antenna port, the m radio frequency signals are modulated by using different light sources, Generating m optical signals having different wavelengths respectively; m≥2;

The radio frequency signal transmission module is further configured to distribute the optical signal of each wavelength to the corresponding optical detecting unit by using the sub-illuminating path corresponding to the input antenna port, and demodulate the optical signal by using the optical detecting unit to generate The regenerated radio frequency signal is sent to the radio frequency transmitting channel of one or more destination antenna ports of the device.

Optionally, the radio frequency signal transmission module is configured to distribute the optical signal of each wavelength to the corresponding light detecting unit by using the split light path corresponding to the input antenna port, and use the light detecting unit to the light. The signal is demodulated to generate a regenerated radio frequency signal, and the regenerated radio frequency signal is sent to the radio frequency transmitting channel of one or more destination antenna ports of the device:

Wherein, each output end of the optical splitter is connected to an input end of a 1*M wavelength divider through an optical fiber, and each of the output terminals of the 1*M wavelength divider corresponds to a light detecting unit corresponding to the destination antenna port. Connected to the input end, the output end of the optical detecting unit is connected to the input end of the radio frequency transmitting channel of the destination antenna port through an electric switch; or each output end of the optical splitter passes the optical fiber and 1*M wavelength division The input ends of the devices are connected, and each output end of the 1*M wavelength divider corresponds to the destination antenna port The input end of the tandem optical path is connected, the output end of the tandem optical path is connected to the input end of the optical detecting unit corresponding to the destination antenna port, and the output end of the optical detecting unit passes the radio frequency of the electrical switch and the destination antenna port The input ends of the transmitting channels are connected; m ≤ M.

Optionally, the radio frequency signal transmission module is further configured to use the L if the radio frequency signal from the external device received from the radio frequency receiving channel of the L input antenna ports needs to be sent to a destination antenna port inside the device. The split light path corresponding to the input antenna port sends the L path optical signal to the tandem optical path corresponding to the destination antenna port; L is greater than or equal to 1;

Optionally, the radio frequency signal transmission module is configured to send the L optical signal to the optical detecting unit corresponding to the destination antenna port by using a tandem optical path corresponding to the destination antenna port in the following manner:

Optionally, the device further includes:

The control information obtaining module is configured to acquire backhaul path control information, determine the radio frequency signal exchange relationship between the antenna ports in the wireless node by using the backhaul path control information, and generate radio frequency signal exchange control information.

Optionally, the control information acquiring module is configured to obtain backhaul path control information, including adopting Get it in any of the following ways:

a) obtained from a cellular mobile communication network;

b) obtained from the wireless local area network;

Optionally, the control information acquiring module is configured to determine, by using the backhaul path control information, the radio frequency signal exchange relationship between the antenna ports in the wireless node in the following manner:

The embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when executed by a processor.

Compared with the related art, the method for exchanging radio frequency signals between antenna ports is provided. After the radio frequency receiving channel of the input antenna port receives the radio frequency signal from the external device, the radio frequency signal is optically modulated and generated. Optical signal; distributing the optical signal to the light detecting unit by using a split light path corresponding to the input antenna port, demodulating the optical signal by using a light detecting unit, generating a regenerated radio frequency signal, and reproducing the The RF signal is sent to the determined RF transmit channel of the K destination antenna ports of the device. The embodiment of the invention can flexibly configure the backhaul transmission path, the wireless backhaul spectrum and the radio frequency transmission channel.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

FIG. 1 is a flowchart of a method for exchanging radio frequency signals between antenna ports according to an embodiment of the present invention.

FIG. 1-a is a schematic diagram of a corresponding switched network according to an embodiment of the present invention.

FIG. 1 is a schematic diagram of a switching network corresponding to mode 2 of the embodiment of the present invention.

FIG. 1 is a schematic diagram of a mode 3 corresponding switching network according to an embodiment of the present invention.

FIG. 1 is a schematic diagram of a four-switched switching network according to an embodiment of the present invention.

FIG. 1 is a schematic diagram of a switching network corresponding to mode 5 of the embodiment of the present invention.

FIG. 1 is a schematic diagram of a switching network corresponding to mode six according to an embodiment of the present invention.

FIG. 1-g is a schematic diagram of a switching network corresponding to mode seven according to an embodiment of the present invention.

FIG. 1 is a schematic diagram of a mode eight corresponding switching network according to an embodiment of the present invention.

2 is a schematic diagram of an RF signal exchange device between antenna ports according to an embodiment of the present invention.

Detailed

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

Embodiment 1, an example of an RF signal exchange method between antenna ports

As shown in FIG. 1 , an embodiment of the present invention provides a method for exchanging radio frequency signals between antenna ports, including the following steps:

Step S110: After receiving the radio frequency signal from the external device, the radio frequency receiving channel of the input antenna port performs optical modulation on the radio frequency signal to generate an optical signal.

Step S120: Distribute the optical signal to the light detecting unit by using a split light path corresponding to the input antenna port, and demodulate the optical signal by using a light detecting unit to generate a reproduced RF signal, and the regenerated The radio frequency signal is sent to the determined radio frequency transmitting channel of the K destination antenna ports of the device; K is greater than or equal to 1;

Wherein, as shown in FIG. 1-a, the optical signal is distributed to the optical detecting unit by using the sub-lighting path corresponding to the input antenna port, and the optical signal is demodulated by using the optical detecting unit to generate a regenerated radio frequency. And transmitting the regenerated radio frequency signal to the determined radio frequency transmission channel of the K destination antenna ports of the device, including performing signal transmission in the following manner:

Determining K purposes from the N antenna ports according to the obtained radio frequency signal exchange control information An antenna port, wherein the K optical detecting units corresponding to the K destination antenna ports are determined from the N optical detecting units, and the determined output signals of the K optical detecting units are transmitted to the corresponding destination antenna port. Radio frequency transmitting channel;

The output end of the optical splitter is connected to the input end of the optical detecting unit corresponding to the destination antenna port through an optical fiber, and the output end of the optical detecting unit passes through the RF transmitting channel of the electrical switch and the destination antenna port. Inputs are connected;

Wherein, as shown in FIG. 1-b, the optical signal is distributed to the optical detecting unit by using the sub-illuminating path corresponding to the input antenna port, and the optical signal is demodulated by using the optical detecting unit to generate a regenerated radio frequency. And transmitting the regenerated radio frequency signal to the determined radio frequency transmission channel of the K destination antenna ports of the device, including performing signal transmission in the following manner:

Each output end of the optical splitter is connected to an input end of a tandem optical path corresponding to the destination antenna port through an optical fiber, and an input of the optical detecting unit corresponding to the output end of the tandem optical path and the destination antenna port Connected to the end, the output end of the light detecting unit is connected to the input end of the radio frequency transmitting channel of the destination antenna port through an electric switch; K≤N.

Wherein, as shown in FIG. 1-c, the optical signal is distributed to the optical detecting unit by using the sub-illuminating path corresponding to the input antenna port, and the optical signal is demodulated by using the optical detecting unit to generate a regenerated radio frequency. And transmitting the regenerated radio frequency signal to the determined radio frequency transmission channel of the K destination antenna ports of the device, including performing signal transmission in the following manner:

The optical switch is connected to the optical detecting unit corresponding to the destination antenna port, and the optical switch is used to control the input optical path of the optical detecting unit. Broken

Wherein, as shown in FIG. 1-d, the optical signal is distributed to the optical detecting unit by using the sub-lighting path corresponding to the input antenna port, and the optical signal is demodulated by using the optical detecting unit to generate a regenerated radio frequency. And transmitting the regenerated radio frequency signal to the determined radio frequency transmission channel of the K destination antenna ports of the device, including performing signal transmission in the following manner:

Each output end of the optical splitter is connected to the optical switch through an optical fiber, and the optical switch is connected to an input end of the tandem optical path corresponding to the destination antenna port, and the output end of the tandem optical path and the destination The input end of the optical detecting unit corresponding to the antenna port is connected; the optical switch is used for controlling the on and off of the input optical path of the tandem optical path; K≤N.

The method further includes:

If m radio frequency signals from an external device are received from m radio frequency receiving channels of one input antenna port, the m radio frequency signals are modulated by different light sources to respectively generate m optical signals having different wavelengths; m ≥2; using the sub-light path corresponding to the input antenna port to distribute the optical signal of each wavelength to the corresponding light detecting unit, and demodulating the optical signal by using the light detecting unit to generate a regenerated radio frequency signal, The regenerated radio frequency signals are transmitted to radio frequency transmitting channels of one or more destination antenna ports of the device.

As shown in FIG. 1-e, the optical signal of each wavelength is distributed to the corresponding optical detecting unit by using the sub-illuminating path corresponding to the input antenna port, and the optical signal is demodulated by using the optical detecting unit. Generating a regenerated radio frequency signal, and transmitting the regenerated radio frequency signal to a radio frequency transmission channel of one or more destination antenna ports of the device, including performing signal transmission in the following manner:

Combining optical signals of different wavelengths of m channels by a combiner, and dividing the optical signals including m kinds of wavelengths into N paths by using a 1*N optical splitter corresponding to the input antenna port, using the 1 *N The N 1*M wavelength dividers connected to the N output ends of the optical splitter separate the optical signals of each wavelength, and transmit the optical signals of each wavelength to the input ends of the corresponding N optical detecting units;

Wherein, each output end of the optical splitter is connected to an input end of a 1*M wavelength divider through an optical fiber, and each of the output terminals of the 1*M wavelength divider corresponds to a light detecting unit corresponding to the destination antenna port. The input ends of the optical detecting unit are connected to the input end of the radio frequency transmitting channel of the destination antenna port through an electric switch;

As shown in FIG. 1-f, the optical signal of each wavelength is distributed to the corresponding optical detecting unit by using the sub-illuminating path corresponding to the input antenna port, and the optical signal is demodulated by using the optical detecting unit. Generating a regenerated radio frequency signal, and transmitting the regenerated radio frequency signal to an RF transmission channel of one or more destination antenna ports of the device, including performing signal transmission in the following manner:

Wherein, each output end of the optical splitter is connected to an input end of a 1*M wavelength divider through an optical fiber, and each output end of the 1*M wavelength splitter and the destination optical port correspond to a tandem optical path The input end is connected, the output end of the tandem optical path is connected to the input end of the optical detecting unit corresponding to the destination antenna port, and the output end of the optical detecting unit passes through the input end of the radio frequency transmitting channel of the electric switch and the destination antenna port Connected; m ≤ M.

Wherein, as shown in FIG. 1-g, each of the sub-illuminating paths corresponding to the input antenna port is used. The optical signal of the wavelength is distributed to the corresponding light detecting unit, and the optical signal is demodulated by the optical detecting unit to generate a regenerated radio frequency signal, and the regenerated radio frequency signal is sent to one or more destination antennas of the device. The RF transmission channel of the port includes signal transmission in the following manner:

Wherein, each output end of the optical splitter is connected to an input end of a 1*M wavelength divider through an optical fiber, and each output end of the 1*M wavelength divider is connected to an optical switch, and the optical switch The light detecting unit corresponding to the destination antenna port is connected, and the optical switch is used to control the on and off of the input optical path of the light detecting unit;

As shown in FIG. 1-h, the optical signal of each wavelength is distributed to the corresponding optical detecting unit by using the sub-illuminating path corresponding to the input antenna port, and the optical signal is demodulated by using the optical detecting unit. Generating a regenerated radio frequency signal, and transmitting the regenerated radio frequency signal to a radio frequency transmission channel of one or more destination antenna ports of the device, including performing signal transmission in the following manner:

Wherein, each output end of the optical splitter is connected to an input end of a 1*M wavelength divider through an optical fiber, and each output end of the 1*M wavelength divider is connected to an optical switch, and the optical switch The input end of the tandem optical path corresponding to the destination antenna port is connected, and the output end of the tandem optical path and the destination antenna The input end of the light detecting unit corresponding to the port is connected; the optical switch is used for controlling the on and off of the input optical path of the tandem optical path; K≤N.

The destination antenna port group that sends two different radio frequency signals includes at least one different destination antenna port.

The method further includes:

If the radio frequency signal from the external device received from the radio receiving channel of the L input antenna ports needs to be sent to a destination antenna port inside the device, the L-channel corresponding to the L input antenna ports is used to Transmitting an L-channel optical signal to the destination antenna by using a tandem optical path corresponding to the destination antenna port; The optical detecting unit corresponding to the port demodulates the L optical signal by using the optical detecting unit to generate an L-channel regenerated radio frequency signal, and sends the L-channel regenerated radio frequency signal to the destination antenna port. In the RF transmission channel.

The illuminating optical path corresponding to the destination antenna port is used to send the L optical signal to the optical detecting unit corresponding to the destination antenna port, including:

The radio frequency transmitting channel of each destination antenna port performs power amplification on the radio frequency signal to be transmitted, or performs frequency conversion on the radio frequency signal to be transmitted.

Wherein, the light detecting unit comprises one or more photoelectric conversion channels, and each of the photoelectric conversion channels detects an optical signal of one wavelength.

The method further includes:

Obtaining backhaul path control information, using the backhaul path control information to determine within the wireless node The radio frequency signal exchange relationship between the antenna ports generates radio frequency signal exchange control information.

The backhaul path control information includes at least one of the following information:

The obtaining the backhaul path control information includes acquiring in any one of the following manners:

a) obtained from a cellular mobile communication network;

b) obtained from the wireless local area network;

The determining, by using the backhaul path control information, the radio frequency signal exchange relationship between the antenna ports in the wireless node, including:

Embodiment 2, an example of an RF signal exchange device between antenna ports

As shown in FIG. 2, an embodiment of the present invention provides an RF signal exchange device between antenna ports, including:

The radio frequency signal receiving module 201 is configured to: after the radio frequency receiving channel of the input antenna port receives the radio frequency signal from the external device, perform light modulation on the radio frequency signal to generate an optical signal;

The radio frequency signal transmission module 202 is configured to distribute the optical signal to the optical detecting unit by using a sub-illuminating path corresponding to the input antenna port, and demodulate the optical signal by using a photo detecting unit. Generating a regenerated radio frequency signal, and transmitting the regenerated radio frequency signal to the determined radio frequency transmitting channel of the K destination antenna ports of the device; K is greater than or equal to 1.

The radio frequency signal transmission module 202 is configured to distribute the optical signal to the optical detection unit by using a sub-illumination path corresponding to the input antenna port, and demodulate the optical signal by using a photo detection unit to generate The regenerated radio frequency signal is sent to the determined radio frequency transmission channel of the K destination antenna ports of the device:

Each of the output ends of the optical splitter is connected to the optical switch through an optical fiber, and the optical switch is connected to a light detecting unit corresponding to the destination antenna port, and the optical switch is used to control the light detecting unit. Each of the output ends of the optical splitter is connected to the optical switch through an optical fiber, and the optical switch is connected to an input end of the tandem optical path corresponding to the destination antenna port, and the tandem optical path is connected The output end is connected to the input end of the light detecting unit corresponding to the destination antenna port; the optical switch is used for controlling the on and off of the input optical path of the tandem optical path; K≤N.

The radio frequency signal receiving module 201 is further configured to: if the m radio frequency signals from the external device are received from the m radio frequency receiving channels of one input antenna port, the m radio frequency signals are modulated by using different light sources, respectively Generating m optical signals having different wavelengths; m≥2;

The RF signal transmission module 202 is further configured to distribute the optical signal of each wavelength to the corresponding light detecting unit by using the split light path corresponding to the input antenna port, and demodulate the optical signal by using the light detecting unit. Generating a regenerated radio frequency signal, and transmitting the regenerated radio frequency signal to a radio frequency transmitting channel of one or more destination antenna ports of the device.

The radio frequency signal transmission module 202 is configured to distribute the optical signal of each wavelength to the corresponding optical detecting unit by using the sub-illuminating path corresponding to the input antenna port, and use the optical detecting unit to the optical signal. Demodulating, generating a regenerated radio frequency signal, and transmitting the regenerated radio frequency signal to a radio frequency transmitting channel of one or more destination antenna ports of the device:

Wherein, each output end of the optical splitter is connected to an input end of a 1*M wavelength divider through an optical fiber, and each of the output terminals of the 1*M wavelength divider corresponds to a light detecting unit corresponding to the destination antenna port. Connected to the input end, the output end of the optical detecting unit is connected to the input end of the radio frequency transmitting channel of the destination antenna port through an electric switch; or each output end of the optical splitter passes the optical fiber and 1*M wavelength division The input ends of the 1*M wavelength divider are connected to the input end of the tandem optical path corresponding to the destination antenna port, and the output end of the tandem optical path corresponds to the destination antenna port. The input end of the light detecting unit is connected, and the output end of the light detecting unit is connected to the input end of the radio frequency transmitting channel of the destination antenna port through an electric switch; m≤M.

The radio frequency signal transmission module 202 is further configured to use the L input if a radio frequency signal received from an external device from the radio frequency receiving channel of the L input antenna ports needs to be sent to a destination antenna port inside the device. The split-light path corresponding to the antenna port sends the L-channel optical signal to the tandem optical path corresponding to the destination antenna port; L is greater than or equal to 1;

Transmitting the L-channel optical signal to the location using a tandem optical path corresponding to the destination antenna port In the optical detecting unit corresponding to the antenna port, the optical detecting unit is used to demodulate the L optical signal to generate an L-channel regenerated radio frequency signal, and the L-channel regenerated radio frequency signal is sent to the destination. In the RF transmit channel of the antenna port.

The radio frequency signal transmission module 202 is configured to send the L optical signal to the optical detecting unit corresponding to the destination antenna port by using a tandem optical path corresponding to the destination antenna port in the following manner:

Wherein, the device further comprises:

The control information obtaining module 203 is configured to acquire backhaul path control information, determine the radio frequency signal exchange relationship between the antenna ports in the wireless node, and generate radio frequency signal exchange control information by using the backhaul path control information.

The control information obtaining module 203 is configured to obtain the backhaul path control information, including acquiring in any one of the following manners:

a) obtained from a cellular mobile communication network;

b) obtained from the wireless local area network;

The control information acquiring module 203 is configured to determine, by using the backhaul path control information, the radio frequency signal exchange relationship between the antenna ports in the wireless node in the following manner:

The method and device for exchanging radio frequency signals between antenna ports are provided by the above embodiments, after the radio frequency receiving channel of the input antenna port receives the radio frequency signal from the external device, and then optically modulates the radio frequency signal to generate an optical signal. Distributing the optical signal to the optical detecting unit by using the sub-lighting path corresponding to the input antenna port, demodulating the optical signal by using the optical detecting unit, generating a regenerated radio frequency signal, and transmitting the regenerated radio frequency signal to the determining Out of the K target antenna ports in the RF transmit channel. The embodiment of the invention can flexibly configure the backhaul transmission path, the wireless backhaul spectrum and the radio frequency transmission channel.

Industrial applicability

The technical solution provided by the embodiment of the present invention, after the radio frequency receiving channel of the input antenna port receives the radio frequency signal from the external device, optically modulates the radio frequency signal to generate an optical signal, and uses the sub-lighting corresponding to the input antenna port. Distributing the optical signal to the optical detecting unit, demodulating the optical signal by using the optical detecting unit, generating a regenerated radio frequency signal, and transmitting the regenerated radio frequency signal to the determined K destination antenna ports. In the RF transmission channel. The technical solution can flexibly configure a backhaul transmission path, a wireless backhaul spectrum, and an RF transmission channel.

Claims

A method for exchanging radio frequency signals between antenna ports, comprising:

After the radio frequency receiving channel of the input antenna port receives the radio frequency signal from the external device, the radio frequency signal is optically modulated to generate an optical signal;

Distributing the optical signal to the light detecting unit by using a split light path corresponding to the input antenna port, demodulating the optical signal by using the light detecting unit, generating a regenerated radio frequency signal, and transmitting the regenerated radio frequency signal To the determined RF transmit channel of the K destination antenna ports of the device; K is greater than or equal to 1.
The method of claim 1 wherein:

Distributing the optical signal to the light detecting unit by using a split light path corresponding to the input antenna port, demodulating the optical signal by using the light detecting unit, generating a regenerated radio frequency signal, and transmitting the regenerated radio frequency signal In the determined RF transmission channel of the K destination antenna ports of the device, including:

Using the 1*N optical splitter corresponding to the input antenna port to divide the optical signal into N paths, and transmitting N optical signals to the input ends of the N optical detecting units;

Determining K destination antenna ports from the N antenna ports according to the obtained radio frequency signal exchange control information, and determining K optical detection units corresponding to the K destination antenna ports from the N optical detection units, Transmitting the determined output signals of the K light detecting units to the radio frequency transmitting channels of the corresponding destination antenna ports;

The output end of the optical splitter is connected to the input end of the optical detecting unit corresponding to the destination antenna port through an optical fiber, and the output end of the optical detecting unit passes through the RF transmitting channel of the electrical switch and the destination antenna port. The input ends are connected to each other; or each output end of the optical splitter is connected to the input end of the tandem optical path corresponding to the destination antenna port through an optical fiber, and the output end of the tandem optical path corresponds to the target antenna port The input ends of the detecting unit are connected, and the output end of the light detecting unit is connected to the input end of the RF transmitting channel of the destination antenna port through an electric switch; K≤N.
The method of claim 1 wherein:

Distributing the optical signal to the light detecting unit by using a split light path corresponding to the input antenna port The optical signal is demodulated by the optical detecting unit to generate a regenerated radio frequency signal, and the regenerated radio frequency signal is sent to the determined radio frequency transmitting channel of the K destination antenna ports of the device, including:

The optical signal is divided into N channels by using a 1*N optical splitter corresponding to the input antenna port, and the optical switch is controlled to turn on and off according to the obtained radio frequency signal exchange control information, and the K is strobed from the N optical signals. The road light signal is transmitted to the corresponding K light detecting units, and the output signals of the K light detecting units are transmitted to the RF transmitting channel of the corresponding destination antenna port;

The optical switch is connected to the optical detecting unit corresponding to the destination antenna port, and the optical switch is used to control the input optical path of the optical detecting unit. Or each output end of the optical splitter is connected to the optical switch through an optical fiber, and the optical switch is connected to an input end of the tandem optical path corresponding to the destination antenna port, and the output end of the tandem optical path is The input end of the optical detecting unit corresponding to the destination antenna port is connected; the optical switch is used to control the on and off of the input optical path of the tandem optical path; K≤N.
The method of claim 1 wherein:

The method further includes:

If m radio frequency signals from an external device are received from m radio frequency receiving channels of one input antenna port, the m radio frequency signals are modulated by different light sources to respectively generate m optical signals having different wavelengths; m ≥2;

Distributing an optical signal of each wavelength to a corresponding light detecting unit by using a split light path corresponding to the input antenna port, and demodulating the optical signal by using a light detecting unit to generate a reproduced RF signal, The regenerated RF signal is sent to the RF transmit channel of one or more destination antenna ports of the device.
The method of claim 4 wherein:

Distributing an optical signal of each wavelength to a corresponding light detecting unit by using a split light path corresponding to the input antenna port, and demodulating the optical signal by using a light detecting unit to generate a reproduced RF signal, The regenerated RF signal is sent to the RF transmission channel of one or more destination antenna ports of the device, including:

Combining optical signals of different wavelengths of m channels by a combiner, and dividing the optical signals including m kinds of wavelengths into N paths by using a 1*N optical splitter corresponding to the input antenna port, using the 1 * N 1*M wavelength dividers connected to the N output terminals of the N optical splitter separate the optical signals of each wavelength, and transmit the optical signals of each wavelength to the input of the corresponding N optical detecting units. end;

Determining, for each optical signal of each wavelength, K i destination antenna ports from the N antenna ports according to the obtained radio frequency signal exchange control information, and determining the K from the N*M optical detecting units The K i light detecting units corresponding to the i target antenna ports transmit the determined output signals of the K i light detecting units to the radio frequency transmitting channels of the corresponding destination antenna ports;

Wherein, each output end of the optical splitter is connected to an input end of a 1*M wavelength divider through an optical fiber, and each of the output terminals of the 1*M wavelength divider corresponds to a light detecting unit corresponding to the destination antenna port. Connected to the input end, the output end of the optical detecting unit is connected to the input end of the radio frequency transmitting channel of the destination antenna port through an electric switch; or each output end of the optical splitter passes the optical fiber and 1*M wavelength division The input ends of the 1*M wavelength divider are connected to the input end of the tandem optical path corresponding to the destination antenna port, and the output end of the tandem optical path corresponds to the target antenna port. The input ends of the detecting unit are connected, and the output end of the light detecting unit is connected to the input end of the RF transmitting channel of the destination antenna port through an electric switch; m≤M.
The method of claim 4 wherein:

Distributing an optical signal of each wavelength to a corresponding light detecting unit by using a split light path corresponding to the input antenna port, and demodulating the optical signal by using a light detecting unit to generate a reproduced RF signal, The regenerated RF signal is sent to the RF transmission channel of one or more destination antenna ports of the device, including:

Combining optical signals of different wavelengths of m channels by a combiner, and dividing the optical signals including m kinds of wavelengths into N paths by using a 1*N optical splitter corresponding to the input antenna port, using the 1 * N 1*M wavelength dividers connected to the N output terminals of the N optical splitter separate optical signals of each wavelength;

Controlling the opening and closing of the optical switch according to the obtained radio frequency signal exchange control information, and for each optical signal of the wavelength, strobing the K i optical signal from the N optical signals to the corresponding K i optical detecting unit, Transmitting the output signals of the K i photodetecting units to the radio frequency transmitting channels of the corresponding destination antenna ports;

Wherein, each output end of the optical splitter is connected to an input end of a 1*M wavelength divider through an optical fiber, and each output end of the 1*M wavelength divider is connected to an optical switch, and the optical switch The light detecting unit corresponding to the destination antenna port is connected, and the optical switch is used for controlling the on and off of the input optical path of the light detecting unit; or each output end of the optical splitter is passed through the optical fiber and the 1*M wavelength divider. The input ends are connected, and each output end of the 1*M wavelength divider is connected to an optical switch, and the optical switch is connected to an input end of a tandem optical path corresponding to the destination antenna port, and an output end of the tandem optical path is connected The input end of the optical detecting unit corresponding to the destination antenna port is connected; the optical switch is used to control the on and off of the input optical path of the tandem optical path; K≤N.
The method of claim 4 wherein:

The destination antenna port group that transmits two different radio frequency signals includes at least one different destination antenna port.
The method of claim 1 wherein:

The method further includes:

If the radio frequency signal from the external device received from the radio receiving channel of the L input antenna ports needs to be sent to a destination antenna port inside the device, the L-channel corresponding to the L input antenna ports is used to The road light signal is sent to the tandem optical path corresponding to the destination antenna port; L is greater than or equal to 1;

Transmitting the L optical signal to a photo detecting unit corresponding to the destination antenna port by using a tandem optical path corresponding to the destination antenna port, and demodulating the L optical signal by using the optical detecting unit And generating an L-channel regenerated radio frequency signal, and transmitting the L-channel regenerated radio frequency signal to the radio frequency transmitting channel of the destination antenna port.
The method of claim 8 wherein:

And sending, by using the tandem optical path corresponding to the destination antenna port, the L optical signal to the optical detecting unit corresponding to the destination antenna port, including:

Using the L optical switches included in the tandem optical path, the L optical signals are sent in a one-to-one manner to the input end of the L-channel photoelectric conversion channel included in the optical detecting unit corresponding to the destination antenna port, thereby realizing the L path. Parallel transmission of optical signals to L-channel photoelectric conversion channels; or

The L-channel optical signal is sent to the input end of a photoelectric conversion channel included in the light detecting unit corresponding to the destination antenna port by using an optical switch included in the tandem optical path to realize the L-channel optical signal to Time division transmission of a photoelectric conversion channel.
The method of any of claims 1-9, wherein:

The radio frequency transmitting channel of each destination antenna port performs power amplification on the radio frequency signal to be transmitted, or frequency-converts the radio frequency signal to be transmitted, and then performs power amplification.
The method of any of claims 1-9, wherein:

The light detecting unit includes one or more photoelectric conversion channels, each of which detects an optical signal of one wavelength.
The method of any of claims 1-9, wherein:

The method further includes:

Obtaining backhaul path control information, determining the radio frequency signal exchange relationship between the antenna ports in the wireless node by using the backhaul path control information, and generating radio frequency signal exchange control information.
The method of claim 12 wherein:

The backhaul path control information includes at least one of the following information:

RF path information between antenna ports in the same wireless node, RF path connectivity information between different wireless nodes, single-hop adjacent wireless node information, path initiation wireless node information and path termination wireless node information, backhaul channel bandwidth information, backhaul channel frequency Information, backhaul traffic channel access guidance information, backhaul control channel access guidance information, backhaul channel reconfiguration information, backhaul channel beam alignment control information.
The method of claim 12 wherein:

The obtaining the backhaul path control information includes acquiring in any one of the following manners:

a) obtained from a cellular mobile communication network;

b) obtained from the wireless local area network;

c) Acquired from the backhaul path control channel of the wireless backhaul network.
The method of claim 12 wherein:

Determining, by using the backhaul path control information, an RF signal exchange relationship between antenna ports in the wireless node, including:

Controlling the opening and closing of the optical switch or the radio frequency switch according to the indication of the backhaul control information;

The optical switch is used to control the on/off of the transmission path of the optical signal; the radio frequency switch is used to enable or interrupt the radio frequency transmission between the optical detection unit and its corresponding radio frequency transmission channel.
An antenna signal exchange device between antenna ports includes:

The radio frequency signal receiving module is configured to: after receiving the radio frequency signal from the external device, the radio frequency receiving channel of the input antenna port is optically modulated to generate the optical signal;

The radio frequency signal transmission module is configured to distribute the optical signal to the optical detecting unit by using the sub-illuminating path corresponding to the input antenna port, and demodulate the optical signal by using the optical detecting unit to generate a regenerated radio frequency signal, The regenerated radio frequency signal is sent to the determined radio frequency transmission channel of the K destination antenna ports of the device; K is greater than or equal to 1.
The apparatus of claim 16 wherein:

The radio frequency signal transmission module is configured to distribute the optical signal to the optical detecting unit by using the sub-illuminating path corresponding to the input antenna port, and demodulate the optical signal by using the optical detecting unit to generate a regenerated radio frequency And transmitting the regenerated radio frequency signal to the determined radio frequency transmission channel of the K destination antenna ports of the device:

Using the 1*N optical splitter corresponding to the input antenna port to divide the optical signal into N paths, and transmitting N optical signals to the input ends of the N optical detecting units;

Determining K destination antenna ports from the N antenna ports according to the obtained radio frequency signal exchange control information, and determining K optical detection units corresponding to the K destination antenna ports from the N optical detection units, Transmitting the determined output signals of the K light detecting units to the radio frequency transmitting channels of the corresponding destination antenna ports;

The output end of the optical splitter is connected to the input end of the optical detecting unit corresponding to the destination antenna port through an optical fiber, and the output end of the optical detecting unit passes through the RF transmitting channel of the electrical switch and the destination antenna port. The input ends are connected; or each output end of the optical splitter is connected The optical fiber is connected to the input end of the tandem optical path corresponding to the destination antenna port, and the output end of the tandem optical path is connected to the input end of the optical detecting unit corresponding to the destination antenna port, and the output end of the optical detecting unit is powered The switch is connected to the input end of the RF transmission channel of the destination antenna port; K ≤ N.
The apparatus of claim 16 wherein:

The radio frequency signal transmission module is configured to distribute the optical signal to the optical detecting unit by using the sub-illuminating path corresponding to the input antenna port, and demodulate the optical signal by using the optical detecting unit to generate a regenerated radio frequency And transmitting the regenerated radio frequency signal to the determined radio frequency transmission channel of the K destination antenna ports of the device:

The optical signal is divided into N channels by using a 1*N optical splitter corresponding to the input antenna port, and the optical switch is controlled to turn on and off according to the obtained radio frequency signal exchange control information, and the K is strobed from the N optical signals. The road light signal is transmitted to the corresponding K light detecting units, and the output signals of the K light detecting units are transmitted to the RF transmitting channel of the corresponding destination antenna port;

The optical switch is connected to the optical detecting unit corresponding to the destination antenna port, and the optical switch is used to control the input optical path of the optical detecting unit. Or each output end of the optical splitter is connected to the optical switch through an optical fiber, and the optical switch is connected to an input end of the tandem optical path corresponding to the destination antenna port, and the output end of the tandem optical path is The input end of the optical detecting unit corresponding to the destination antenna port is connected; the optical switch is used to control the on and off of the input optical path of the tandem optical path; K≤N.
The apparatus of claim 16 wherein:

The radio frequency signal receiving module is further configured to: if the m radio frequency signals from the external device are received from the m radio frequency receiving channels of one input antenna port, the m radio frequency signals are modulated by different light sources, and respectively generated differently m optical signals of wavelength; m≥2;

The radio frequency signal transmission module is further configured to distribute the optical signal of each wavelength to the corresponding optical detecting unit by using the sub-illuminating path corresponding to the input antenna port, and demodulate the optical signal by using the optical detecting unit to generate The regenerated radio frequency signal is sent to the radio frequency transmitting channel of one or more destination antenna ports of the device.
The apparatus of claim 19 wherein:

The radio frequency signal transmission module is configured to distribute the optical signal of each wavelength to the corresponding optical detecting unit by using the sub-illuminating path corresponding to the input antenna port, and demodulate the optical signal by using the optical detecting unit. Generating a regenerated radio frequency signal, and transmitting the regenerated radio frequency signal to an RF transmission channel of one or more destination antenna ports of the device:

Combining optical signals of different wavelengths of m channels by a combiner, and dividing the optical signals including m kinds of wavelengths into N paths by using a 1*N optical splitter corresponding to the input antenna port, using the 1 * N 1*M wavelength dividers connected to the N output terminals of the N optical splitter separate the optical signals of each wavelength, and transmit the optical signals of each wavelength to the input of the corresponding N optical detecting units. end;

Determining, for each optical signal of each wavelength, K i destination antenna ports from the N antenna ports according to the obtained radio frequency signal exchange control information, and determining the K from the N*M optical detecting units The K i light detecting units corresponding to the i target antenna ports transmit the determined output signals of the K i light detecting units to the radio frequency transmitting channels of the corresponding destination antenna ports;

Wherein, each output end of the optical splitter is connected to an input end of a 1*M wavelength divider through an optical fiber, and each of the output terminals of the 1*M wavelength divider corresponds to a light detecting unit corresponding to the destination antenna port. Connected to the input end, the output end of the optical detecting unit is connected to the input end of the radio frequency transmitting channel of the destination antenna port through an electric switch; or each output end of the optical splitter passes the optical fiber and 1*M wavelength division The input ends of the 1*M wavelength divider are connected to the input end of the tandem optical path corresponding to the destination antenna port, and the output end of the tandem optical path corresponds to the target antenna port. The input ends of the detecting unit are connected, and the output end of the light detecting unit is connected to the input end of the RF transmitting channel of the destination antenna port through an electric switch; m≤M.
The apparatus of claim 19 wherein:

The radio frequency signal transmission module is configured to distribute the optical signal of each wavelength to the corresponding optical detecting unit by using the sub-illuminating path corresponding to the input antenna port, and demodulate the optical signal by using the optical detecting unit. Generating a regenerated radio frequency signal, and transmitting the regenerated radio frequency signal to an RF transmission channel of one or more destination antenna ports of the device:

Combining optical signals of different wavelengths of m channels by a combiner, and dividing the optical signals including m kinds of wavelengths into N paths by using a 1*N optical splitter corresponding to the input antenna port, using the 1 * N 1*M wavelength dividers connected to the N output terminals of the N optical splitter separate optical signals of each wavelength;

Controlling the opening and closing of the optical switch according to the obtained radio frequency signal exchange control information, and for each optical signal of the wavelength, strobing the K i optical signal from the N optical signals to the corresponding K i optical detecting unit, Transmitting the output signals of the K i photodetecting units to the radio frequency transmitting channels of the corresponding destination antenna ports;

Wherein, each output end of the optical splitter is connected to an input end of a 1*M wavelength divider through an optical fiber, and each output end of the 1*M wavelength divider is connected to an optical switch, and the optical switch The light detecting unit corresponding to the destination antenna port is connected, and the optical switch is used for controlling the on and off of the input optical path of the light detecting unit; or each output end of the optical splitter is passed through the optical fiber and the 1*M wavelength divider. The input ends are connected, and each output end of the 1*M wavelength divider is connected to an optical switch, and the optical switch is connected to an input end of a tandem optical path corresponding to the destination antenna port, and an output end of the tandem optical path is connected The input end of the optical detecting unit corresponding to the destination antenna port is connected; the optical switch is used to control the on and off of the input optical path of the tandem optical path; K≤N.
The apparatus of claim 19 wherein:

The destination antenna port group that transmits two different radio frequency signals includes at least one different destination antenna port.
The apparatus of claim 16 wherein:

The radio frequency signal transmission module is further configured to: if the radio frequency signal from the external device received from the radio frequency receiving channel of the L input antenna ports needs to be sent to a destination antenna port inside the device, use the L input antenna ports to correspond to The split light path sends the L channel optical signal to the tandem optical path corresponding to the destination antenna port; L is greater than or equal to 1;

Transmitting the L optical signal to a photo detecting unit corresponding to the destination antenna port by using a tandem optical path corresponding to the destination antenna port, and demodulating the L optical signal by using the optical detecting unit And generating an L-channel regenerated radio frequency signal, and transmitting the L-channel regenerated radio frequency signal to the radio frequency transmitting channel of the destination antenna port.
The apparatus of claim 23 wherein:

The radio frequency signal transmission module is configured to send the L optical signal to the optical detecting unit corresponding to the destination antenna port by using a tandem optical path corresponding to the destination antenna port in the following manner in:

Using the L optical switches included in the tandem optical path, the L optical signals are sent in a one-to-one manner to the input end of the L-channel photoelectric conversion channel included in the optical detecting unit corresponding to the destination antenna port, thereby realizing the L path. Parallel transmission of optical signals to L-channel photoelectric conversion channels; or

The L-channel optical signal is sent to the input end of a photoelectric conversion channel included in the light detecting unit corresponding to the destination antenna port by using an optical switch included in the tandem optical path to realize the L-channel optical signal to Time division transmission of a photoelectric conversion channel.
Apparatus according to any of claims 16-24, wherein:

The radio frequency transmitting channel of each destination antenna port performs power amplification on the radio frequency signal to be transmitted, or frequency-converts the radio frequency signal to be transmitted, and then performs power amplification.
Apparatus according to any of claims 16-24, wherein:

The light detecting unit includes one or more photoelectric conversion channels, each of which detects an optical signal of one wavelength.
Apparatus according to any of claims 16-24, wherein:

The device also includes:

The control information obtaining module is configured to acquire backhaul path control information, determine the radio frequency signal exchange relationship between the antenna ports in the wireless node by using the backhaul path control information, and generate radio frequency signal exchange control information.
The apparatus of claim 27 wherein:

The backhaul path control information includes at least one of the following information:

RF path information between antenna ports in the same wireless node, RF path connectivity information between different wireless nodes, single-hop adjacent wireless node information, path initiation wireless node information and path termination wireless node information, backhaul channel bandwidth information, backhaul channel frequency Information, backhaul traffic channel access guidance information, backhaul control channel access guidance information, backhaul channel reconfiguration information, backhaul channel beam alignment control information.
The apparatus of claim 27 wherein:

The control information obtaining module is configured to obtain backhaul path control information, and is obtained by using any one of the following methods:

a) obtained from a cellular mobile communication network;

b) obtained from the wireless local area network;

c) Acquired from the backhaul path control channel of the wireless backhaul network.
The apparatus of claim 27 wherein:

The control information obtaining module is configured to determine, by using the backhaul path control information, the radio frequency signal exchange relationship between the antenna ports in the wireless node in the following manner:

Controlling the opening and closing of the optical switch or the radio frequency switch according to the indication of the backhaul control information;

The optical switch is used to control the on/off of the transmission path of the optical signal; the radio frequency switch is used to enable or interrupt the radio frequency transmission between the optical detection unit and its corresponding radio frequency transmission channel.