CN1981452B - A method and system for operating an ambience listening mode in a wireless communication system - Google Patents
A method and system for operating an ambience listening mode in a wireless communication system Download PDFInfo
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- CN1981452B CN1981452B CN2005800216490A CN200580021649A CN1981452B CN 1981452 B CN1981452 B CN 1981452B CN 2005800216490 A CN2005800216490 A CN 2005800216490A CN 200580021649 A CN200580021649 A CN 200580021649A CN 1981452 B CN1981452 B CN 1981452B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W8/24—Transfer of terminal data
- H04W8/245—Transfer of terminal data from a network towards a terminal
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- H04Q7/28—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/08—Trunked mobile radio systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
A system comprises a monitoring communication unit (107) performing an ambiance listening service for a monitored communication unit (101). The monitored communication unit (101) comprises a transmitter (109) for transmitting the ambiance listening mode transmissions to the monitoring communication unit (107) which comprises a receiver (117) for receiving these. In addition, the monitoring communication unit (107) comprises a command controller (119, 121) which determines and transmits transmission parameter commands to the monitored communication unit (101) where they are received by a receiver (113). The monitored communication unit (101) comprises a transmission controller (115) which sets at least one transmission parameter of the ambiance listening mode transmissions in response to the transmission parameter commands. The monitoring communication unit (107) may accordingly control aspects of the transmission from the monitored communication unit (101) and may in particular reduce the transmit power or the transmit time thereby reducing power consumption, heating and interference.
Description
Technical field
The present invention relates to be used for the method and system of ambience listening (ambiancelistening) pattern of operate wireless communication systems, specifically but be not all, relate to for example ambience listening mode in TETRA (land trunked radio) communication system of operation honeycomb communication system.
Background technology
In cellular communication system, the geographic area is divided into a plurality of sub-districts, and each sub-district is by base station services.By these base stations of fixed network interconnects, fixed network can be between the base station communication data.By the base station of sub-district, by Radio Communications Link service remote unit, remote unit is positioned at this sub-district.
Because remote unit moves, it may move to the coverage of another base station from the coverage of a base station, that is, from a sub-district to another.Because remote unit moves towards new base station, it enters the overlapping covered of two base stations, in this overlapping region, transfers to by new base station and supports it.Because remote unit further moves to new sub-district, it continues by new base station services.This is called sub-district gravity treatment or switching.
Communication from the remote unit to the base station is called up link, and the communication from the base station to the remote unit is called down link.
The fixed network of interconnection base station is operating as route data between any two base stations, makes remote unit and mobile station communicate in any other sub-district in the sub-district thus.In addition, fixed network can comprise gateway function, is used to be interconnected to for example external network of public switch telephone network (PSTN), makes remote unit communicate by letter with other communication terminals that are connected by ground wire with the ground wire phone thus.In addition, fixed network comprises many functions that the management legacy cellular communications networks is required, comprises the function that is used for route data, access control, resource allocation, user's charging, mobile radio station authentication etc.
The example of cellular communication system comprises for example TETRA (land trunked radio) for example of global system for mobile communications (GSM) and professional mobile radio (PMR) system of public cellular communication system.
Especially, although TETRA can be used as public cellular communication system.It is designed to provide for private organization or colony, for example suitable especially a plurality of characteristics and the service of emergency services.
For example, TETRA is provided for managing and controlling a plurality of characteristics and the service of grouping busy and being used to manage the member of these groups.Therefore, the service that TETRA is provided for grouping busy wherein, for example also is relayed to speech message the particular group of remote unit fast effectively.TETRA also is provided for managing not on the same group member, on the same group the characteristic of priority etc. not.Equally, TETRA provide confirm with do not confirm communicating by letter.For the service of confirming, call setup comprises that call initiator receives the affirmation that indication has arrived target.Yet, for the service that does not have to confirm, not from the target confirmation of receipt.
Other characteristics and the service that are provided by TETRA comprise high level fail safe, this is best for specific purpose, the distribution of PTT channel, broadcast ﹠ call, direct mode operation (DMO), wherein remote unit can direct communication, and does not need the participation of base station etc.
For the supplemental services that TETRA proposed is the ambience listening service.(authorized) user that ambience listening allows authentication is near the purpose of the voice activity of monitoring this remote unit, sets up the calling with particular remote unit, and can not cause the indication of this activity of any generation.The user of ambience listening service permission authentication listens to the acoustic environment of remote unit, and this is not tangible near user the remote unit or people.
Typically, ambience listening is intended to increase security of users and reliability.The user of authentication will typically become the Microstructure Control center of operation TETRA network.For example, organize for example TETRA system of station house operation, typically will distribute CCC's authenticated user state, make it listen to independent enforcement person's remote unit for carrying out by law.Receive warning from remote unit in for example CCC, perhaps may occur under the situation of suspection of criminal information, ambience listening can assist CCC to determine that situation is what kind of, and selects suitable action target.
Typically, the unique user of remote unit can be forbidden the use of ambience listening.Yet,, start and stop ambience listening by sending starting command to remote unit by authenticated user usually if remote unit has allowed ambience listening.
Although the ambience listening service provides a plurality of advantages, and can increase remote unit security of users and reliability, some shortcomings relevant with the support environment monitoring service are also arranged.
For example, for from remote unit reception environment voice signal, they send to authenticated user constantly.Therefore, Traffic Channel is occupied by this transmission constantly.This not only causes disturbing and reducing the whole volume of communication system, also influences remote unit self.An influence is that this transmission is relevant with the power consumption of highly significant, causes significant running down of battery.Therefore the use of ambience listening can reduce battery life, and is inconvenient for the user further, because this power consumption typically takes place under the situation of the consciousness that does not have him.This can cause battery by discharge and the user does not notice, may make him in case of emergency can not use remote unit thus.
Equally, the transmission in the ambience listening causes the power loss that increases, and this causes the heating of remote unit.Although this increase of temperature is not necessarily big, it may make that people determine to transmit.Therefore, this heating can start the ambience listening service so that people detect, and this does not expect in many cases.
Therefore, the improvement system that is used for the operating environment listen mode will be favourable, and will be concrete, and the flexibility, the control of increase, the power consumption that reduces, the privacy of increase and/or the system of improved performance that allow to increase will be useful.
Summary of the invention
Therefore, the present invention preferably seek individually or with any combination alleviate, alleviate or eliminate one or more above-mentioned unfavorable.
According to a first aspect of the invention, provide a kind of system, be used for operating in the ambience listening mode that wireless communication system is associated with monitoring communication unit and monitored communication unit; This system comprises: detects communication unit, has the device that is used for from the transmission of monitored communication unit reception environment listen mode, and the device that is used at least one transmission parameter order is sent to monitored communication unit; And monitored communication unit, comprise the device that is used for the ambience listening mode transmission is sent to monitoring communication unit, be used for receiving the device of at least one transmission parameter order from monitoring communication unit, and be used in response at least one transmission parameter order, the device of at least one transmission parameter of ambience listening mode transmission is set.
When the operating environment monitoring service, the present invention can provide improved performance.Monitoring communication unit can be associated with the authenticated user of the acoustic environment of monitoring this monitored communication unit, and this user does not perceive the behavior.Monitoring communication unit, and the therefore user of authentication can be controlled at least one transmission parameter of monitored communication unit, allow the Long-distance Control of transmission characteristic thus.Monitoring communication unit can the control transmission parameter be the importance that is perceiveed or the urgency of suitable current operation environment, delay environment and/or this monitoring.For example, can regulate transmission parameter by monitoring communication unit, with optimization resource dynamically use and monitoring quality between compromise.Transmission parameter can be changed under adapt circumstance, to reduce the heating of power consumption and remote unit, allows the quality that reduces simultaneously.This will improve battery life and/or can reduce the probability that monitoring is monitored at monitored remote unit.In certain embodiments of the present invention, at least one transmission parameter can cause the interference level that reduces of communication system as a whole and the capacity of increase.
According to optional feature of the present invention, at least one transmission parameter comprises ambience listening mode transmission continuity parameter.
In response to the transmission parameter order, monitored communication unit can be switched between continuous transmission mode and discontinuousness transmission mode.In continuous mode, can be for example utilize the Traffic Channel of distributing to ambience listening fully by the whole suitable time slots of the channel that is used, be used for data are transferred to monitoring communication unit from monitored communication unit.In discontinuous mode, can be only for example partly use the Traffic Channel of distributing to ambience listening by some suitable time slot of the channel that is used, be used for data are transferred to monitoring communication unit from monitored communication unit.This can provide, and effective and simple implement device reduces power consumption, temperature increases and the interference of ambience listening service.
According to optional attribute of the present invention, at least one transmission parameter comprises the transmitted power parameter.For example, so unimportant when the quality of ambience listening, when for example not indicating material circumstance, can reduce transmitted power owing to monitored sound.This feature can provide effective and simple implementation method to reduce the interference of power consumption, temperature increase and ambience listening service.
According to optional attribute of the present invention, the device that is used to send the ambience listening mode transmission is operating as discontinuously and sends, and at least one transmission parameter comprises time (temporal) feature of at least one discontinuous transmission.The variation that is used for the temporal characteristics of discontinuous transmission provides suitable especially method to come the transmission feature of optimization ambience listening mode transmission.Typically, the variation of time response provides significant result, and is not difficult to realize.
According to optional attribute of the present invention, time response comprises the duration of at least one discontinuous transmission.This provides simple and efficient especially realization, is suitable for many embodiment.
According to optional attribute of the present invention, time response comprises the interval between the discontinuous transmission.This provides simple and efficient especially realization, is suitable for many embodiment.For example, the time interval that changes between the continuous discontinuous transmission is uncomplicated, and effective control is provided.As an example, in the TETRA communication system, the device that is used to be provided with at least one transmission parameter can cause skipping one or more time slots in response to receiving the transmission parameter order.The transmission parameter order can be indicated especially between from the transmission of monitored communication unit should skip for how many frames.
According to optional attribute of the present invention, monitored communication unit comprises the device that is used for operational parameter information is sent to monitoring communication unit.Here can provide extra information to monitoring communication unit and/or authenticated user, allow the operation of authenticated user control monitoring communication unit and/or monitored communication unit thus in response to it.
According to optional attribute of the present invention, monitoring communication unit comprises the device that is used for generating in response to operational parameter information at least one transmission parameter order.This allows the improved setting of at least one transmission parameter, owing to can select the transmission parameter order to reflect the current operating condition of monitored communication unit.For example, in monitored communication unit, can be automatically or the order of semi-automatic selection transmission parameter.
According to optional attribute of the present invention, operational parameter information comprises the operating temperature indication of monitored communication unit.This allows the operating temperature in response to monitored communication unit, controls at least one transmission parameter by monitoring communication unit, improves the control of the feature of monitored communication unit thus.For example, if the temperature of monitored communication unit is increased on the given threshold value, can reduce through-put power.
According to optional attribute of the present invention, operational parameter information comprises the battery charge indication of monitored communication unit.This can allow the battery charge in response to monitored communication unit, controls at least one transmission parameter by monitoring communication unit, improves the control of the characteristic of monitored communication unit thus.For example, if battery charge is lower than given threshold value, can reduce through-put power and/or can application transport between the interval of increase.The battery charge indication can for example be in the indication to the residual charge in the battery of monitored communication unit power supply.
According to optional attribute of the present invention, operational parameter information comprises that the external power source of monitored communication unit connects indication.For example, external power source connection indication can indicate monitored communication unit whether to be connected to external power source or whether it is powered by internal cell.Can obtain the improved conciliation of the transmission characteristic of monitored communication unit, and can the optimize transmissions characteristic reflect that limited battery supply still is that typical unlimited external power source is powered to monitored communication unit particularly.
According to optional attribute of the present invention, operational parameter information comprises the operator scheme indication of monitored communication unit.This can allow the current operator scheme in response to monitored communication unit, at least one transmission parameter of optimization.For example, can execution environment monitor, and no matter monitored communication unit is closed and therefore transmission characteristic be changed with the reflection monitored communication unit and be in open operation pattern or shutdown mode of operation.
According to optional attribute of the present invention, monitoring communication unit comprises the device that is used for the operational parameter information request message is sent to monitored communication unit, and monitored communication unit is operating as in response to receiving this operational parameter information request message, transmit operation parameter information.This provides the efficient system that is used for the traffic operation parameter, and allows monitoring communication unit control when this information is provided.
According to optional attribute of the present invention, monitored communication unit is operating as in first operator scheme and second mode of operation and does, and wherein in second operator scheme rather than first operator scheme, at least one transmission parameter is applied in the transmission.Specifically, first operator scheme can be to monitor operator scheme fully, and second operator scheme can be the monitoring pattern that reduces.Monitored communication unit can be operating as first operator scheme, and for example traditional ambience listening wherein is provided, but can also switch to second operator scheme, and wherein for example temperature increase, power consumption and/or interference are reduced.
According to optional attribute of the present invention, monitoring communication unit is operating as the monitoring operator scheme request that will revise and sends to monitored communication unit, and monitored communication unit is operating as the monitoring operator scheme request of revising in response to receiving, and enters second operator scheme.This user who provides effective method to allow monitoring communication unit and authentication controls the operation of monitored communication unit.Monitored communication unit can be in response to receiving the operator scheme request transmit operation parameter information, thus when entering second operator scheme, provide and confirm and the information of the operating condition of monitored communication unit.
According to optional attribute of the present invention, wherein monitored communication unit comprises the ambient sound characteristic that is used in response to monitored, device for switching between first operator scheme and second operator scheme.The mode effectively and easily that this can allow to change transmission characteristic adapts to and works as precondition.Especially, when the indication of ambient sound characteristic is quiet relatively, can enters second operator scheme, and when these peace and quiet finish, withdraw from.
According to optional attribute of the present invention, monitored ambient sound characteristic is the speech detection characteristic.This provides particularly suitable ambient sound characteristic, because when in the environment in monitored communication unit speech activity being arranged, it allows complete ambience listening, reduces power consumption and interference simultaneously when not having speech activity.Therefore, when might be important, can obtain improved ambience listening quality, when ambience listening might be so unimportant, allow the resource consumption that reduces simultaneously.
According to optional attribute of the present invention, be operating as the given duration of volume level that monitored ambient sound characteristic indication is lower than volume threshold if be used for device for switching, start second operator scheme.This allows effective and simple method to be identified for switching to the adapt circumstance sound property of second operator scheme.
According to optional attribute of the present invention, be used for device for switching and be operating as in response at least one transmission parameter order, the duration is set.This allows when at ambience listening mode, and the user of monitoring communication unit and authentication is for the improved control of the operation of monitored communication unit.
According to optional attribute of the present invention, monitored communication unit comprises the device that is used at second operator scheme rather than the first operator scheme transmit status Indication message.This allows transmit status Indication message when might be the most suitable.For example, in second operator scheme, can replace some or all ambience listening mode transmission by state indication message, and this user for authentication not important.
Wireless communication system can be a cellular communication system, and particularly, can be TETRA (land trunked radio) system.
According to a second aspect of the invention, provide a kind of device that is used for operating the ambience listening mode relevant with the telecommunication unit of wireless communication system; This device comprises: be used for from the device of telecommunication unit reception environment listen mode transmission; And the device that is used at least one transmission parameter order is sent to remote unit, this at least one transmission parameter order indication is used transmission parameter settings by remote command when sending the ambience listening mode transmission.
According to a third aspect of the invention we, provide a kind of device that is used for operating the ambience listening mode that is associated with the monitoring communication unit of wireless communication system; This device comprises: the device that is used for the ambience listening mode transmission is sent to monitoring communication unit; Be used for receiving the device of at least one transmission parameter order from monitoring communication unit; And be used in response at least one transmission parameter order, the device of at least one parameter of ambience listening mode transmission is set.
According to a forth aspect of the invention, provide a kind of method that is used for operating the ambience listening mode that is associated with the monitoring communication unit and the monitored communication unit of wireless communication system; The method comprising the steps of: in monitoring communication unit: from the transmission of monitored communication unit reception environment listen mode, and at least one transmission parameter order sent to monitored communication unit; And in monitored communication unit: the ambience listening mode transmission is sent to monitoring communication unit, receive at least one transmission parameter order from monitoring communication unit, and, at least one transmission parameter of ambience listening mode transmission is set in response at least one transmission parameter order.
From with reference to the embodiment that the following describes and use these embodiment to set forth, these and other aspects of the present invention, characteristic and advantage will be apparent.
Description of drawings
With reference to the accompanying drawings, only the mode by example illustrates embodiments of the invention, wherein:
Fig. 1 illustrates the example of the TETRA cellular communication system that adopts embodiments of the invention.
Fig. 2 illustrates example signal flow graph according to an embodiment of the invention.
Embodiment
Below explanation focus on being applied to the embodiments of the invention of the ambience listening service of TETRA (land trunked radio) cellular communication system.However, it should be understood that the present invention is not restricted to this application, but can be applied to many other wireless communication systems.
Fig. 1 illustrates the example of the TETRA cellular communication system that adopts embodiments of the invention.
TETRA is time division multiplexing (TDMA) system, and wherein the wide carrier wave of 25kHz is further divided into assignable four time slots separately.Each time slot has the duration of 14.167msec, and four time slots are combined as the time frame of the duration with 56.67msec.Each of four time slots in the time frame can be assigned to identical or different remote unit individually.In addition, time frame is combined as the multiframe that comprises 18 time frames.Frame number 18 keeps as control frame, wherein can be during effective call communication control information.
In the system of Fig. 1, TETRA remote unit 101 is communicated by letter with TETRA base station 103 by the TETRA radio air interfaces.Base station 103 is connected to the fixed network 105 of interface to other base station (not shown) and other network (not shown).Fixed network 105 is connected to control unit 107.Control unit 107 uses the TETRA communication system to be used for the central Distribution Center control unit of certain tissue of the communication service between the more number unique user in the embodiment in figure 1.For example, CCC can be that for example police's CCC is organized in the law execution.
In this embodiment, CCC can use the service of TETRA ambience listening in advantage ground in some cases.For example, if from remote unit 101 receiving alarms, the operator of CCC can set up the ambience listening operation that is used for remote unit 101, provides the further information of the situation of alarm with acquisition.Like this, the operator can obtain further information, and does not need the user to operate remote unit.When setting up the ambience listening service, remote unit 101 and control unit 107 all enter ambience listening mode.
According to the embodiment of Fig. 1, in the time of in operating in ambience listening mode, by the operation of control unit 107 influences or control remote unit 101.Specifically, control unit 107 can be controlled from one or more parameters of remote unit 101 transmission of 103 to the base station.
According to the embodiment of Fig. 1, remote unit 101 comprises transmitter 109, is used for the ambience listening mode transmission is sent to monitoring communication unit.In an embodiment, transmitter 109 receives the input from the microphone 111 of remote unit 101, and code signal also sends to base station 103 by the TETRA air interface with the ambience listening data of gained.Then, by fixed network 105, the ambient sound data 103 are routed to control unit 107 from the base station.Therefore, in this embodiment, the ambient sound data are not directly sent to control unit 107, but send indirectly via base station 103 and fixed network 105 by air interface.Should be understood that in certain embodiments, can integrated control unit 107 and base station 103, and the ambient sound data directly can be transferred to control unit 107 by air interface, and do not comprise fixed network 107.
In the embodiment in figure 1 according to TETRA technical specification known in the field, the transmission of the coding of execution environment sound and gained data, for simplicity and clearly purpose will not described this TETRA technical specification at this.
Remote unit 101 further comprises receiver, and it is operating as from control unit 107 and receives the transmission parameter order.Via fixed network 105 and base station 103, send the transmission parameter order from control unit 107.Remote unit 101 further comprises transmission control unit (TCU) 115, and it is connected to receiver 113 and transmitter 109.The transmission parameter order that transmission control unit (TCU) 115 receives from receiver 113, and be operating as in response to the transmission parameter order one or more transmission parameters of the transmission of the voice data that controls environment.
Control unit 107 comprises receiver 117, and it is via base station 103 and fixed network 105, from remote unit 101 reception environment data transmission in network telephony.
Receiver 107 reception environment voice datas also generate voice signal, and this voice signal is presented to the operator by for example loud speaker, earphone or other user's interface devices.
Receiver 117 is also connected to ambience listening controller 117, and this ambience listening controller 117 is presented the operation information relevant for ambience listening service, ambient sound data and/or remote unit 101 in the embodiment in figure 1, and is as described below.Ambience listening controller 119 is operating as remote transmission characteristic or the parameter of determining from the expectation of the transmission of the ambient sound data of remote unit 101.
Control unit 107 also comprises instruction control unit 121, and it presents the remote transmission characteristic from the expectation of ambience listening controller 119.In response, instruction control unit 121 generates one or more transmission parameter orders, via fixed network 105 and base station 103 this transmission parameter order is sent to remote unit 101.
According to the embodiment of Fig. 1, so control unit 107 is formed for the monitoring communication unit of ambience listening service, the monitored communication unit of remote unit 101 formation ambience listening services.In addition, except excitation and the operation of termination ambience listening, control unit 107 also changes the call transmitter method of monitored remote unit 101.Therefore, control unit 107 can generate the transmission parameter order, when remote unit 101 receives this transmission parameter order, will therefore make transmission parameter is set.Therefore, control unit provides extra control, allows the flexibility of improved performance and increase.Specifically, control unit 107 can generate the transmission parameter order, works as precondition so that the change transmission parameter mates.
In certain embodiments, can be according to the algorithm that is fit to, by control unit 107, automatically determine the determining of transmission parameter of transmission parameter order and/or expectation.Yet, in other embodiments, can semi-automatically determine or the transmission parameter of transmission parameter order and/or expectation is determined in the artificially.For example, ambience listening controller 119 can be realized user's interface device, allows the operator directly to import the absolute or relative transmission parameter and/or the transmission parameter order of expectation.In some this embodiment, user interface can also make the user can select transmission parameter or the transmission parameter order that is fit in response to these parameters with giving the user about the state of ambience listening service or remote unit 101 or the information representation of characteristic thus.User interface for example can comprise display, keyboard and/or pointing device.
Should be understood that the transmission parameter that can occur and revise can depend on particular characteristics and the needs relevant with single embodiment in different embodiment.Hereinafter, specifically with reference to the embodiment of Fig. 1, explanation can monitored communication unit the example of the transmission parameter of influence or control separately or in combination.
In certain embodiments, the transmitted power parameter can remotely be controlled or influence to control unit 107.Particularly, can send the transmission parameter order by control unit 107, control environment and monitor the transmitted power of data transmission in network telephony, in response to this transmission parameter order, transmission control unit (TCU) 115 is determined suitable transmitted power.The transmission parameter order can directly instruct transmission control unit (TCU) 115 through-put powers to be set to given rank, perhaps increases or reduce the transmitted power specified rate.
The quality that reduces in ambience listening information is under the acceptable situation, and this allows control unit 107 to reduce transmitted power.For example,, can temporarily reduce transmitted power, reduce the temperature of power consumption and remote unit 101 thus if do not hear ambient sound, and the influence that is produced.Although can introduce the noise of increase, during the quiet cycle, this is acceptable normally.
In certain embodiments, the data transfer rate of ambience listening data can remotely be controlled or influence to control unit 107.Can change data transfer rate by changing source code rate and/or channel encoding rate.For example, during the quiet cycle, can reduce data transfer rate, but cause the quality acceptable signal that reduces.For example, remote unit 101 can comprise High Data Rate sound (voice) encoder and low rate vocoder, and transmission control unit (TCU) can switch between them in response to the transmission parameter order that receives from control unit 107.Similarly, remote unit 101 can comprise high speed channel encoder and low rate channel encoder, and transmission control unit (TCU) can switch between them in response to the transmission parameter order.
Should be understood that in certain embodiments transmission control unit (TCU) can or change a plurality of these parameters independently of one another with combination.For example, the transmission parameter order can comprise that indication remote unit 101 switches to the order of quiet operation pattern.When receiving this order, transmission control unit (TCU) 115 can control transmitter 109 and switch to low data rate encoder far away and High Data Rate channel encoder (preferably causing and identical before channel data rates).The chnnel coding that increases allows to carry out this transmission with low-down transmitting power, causes reducing significantly power consumption, temperature rising and interference thus.In addition, because the source rate that reduces, though, receive reliable environmental sound signal at control unit 107 with lower quality.
In certain embodiments, can be in response to the transmission parameter order, the transmission continuity parameter of the monitored data that controls environment.For example, transmission control unit (TCU) 115 can be in response to receiving suitable transmission parameter order, continuing to be transferred between the intermittent transmission of ambience listening data and switch in the ambience listening data.
Can be discontinuously or send off and among the embodiment of ambience listening data at some, can change the time response of discontinuous transmission.For example, can send suitable transmission parameter order to remote unit 101, the duration that increases or reduce to transmit by control unit 107.In some this embodiment, source encoder can generate the data of arranging with the importance of successively decreasing.In each acoustic coding frame, can generate first group of data bit, this first group of data bit is important, the second group of data bit of can encoding for the sound that reproduces coding, this second group of data bit do not have significant quality to reduce for reproducing sound be important and the 3rd group of data bit of can encoding, and the 3rd group of data bit only provides relatively little quality improvement.In this embodiment, can send the transmission parameter order from control unit 107, this causes only sending the transmitting continuous time of the ambience listening data that allow first group of data.This will allow to reproduce low quality sound at control unit 107, cause low power consumption, temperature to increase and interference simultaneously, and for example can be suitable for the quiet cycle.Improved if desired quality can send another transmission parameter order.This order can cause increasing the duration, to comprise second group of data bit equally.At last, can send the 3rd transmission parameter order, be set the duration, cause best in quality, but cost is power consumption and the interference that increases so that allow to send the total data position.
Alternatively or extraly, can or influence interval between the discontinuous transmission by control unit 107 controls.For example, the duration of individual data transmission can keep substantial constant, can change the effective data rate of ambience listening data simultaneously by the interval between the transmission of change continuous data.
Therein by repeating among the TETRA embodiment that time slot forms the ambience listening Traffic Channel, can in some time slot, send data and obtain interval between the ambience listening transfer of data by ignoring.For example, can use the transmission parameter orders, make the ambience listening transfer of data use each time slot, use of per two time slots or use of per four time slots by control unit 107.By this way, control unit 107 can be controlled the effective data rate from the transmission of the ambience listening data of remote unit 101, and the trading off between monitoring quality and power consumption, heating and the interference that therefore can control environment.
Although should be understood that in certain embodiments and can control these parameters fully, only comprise that in other embodiments the transmission parameter order is as the parameter in the determining of transmission parameter by control unit 107.Especially, transmission control unit (TCU) 115 can be operated the algorithm that is used for determining suitable transmission parameter, and it comprises determining of characteristic, parameter and number of commands.Therefore, the transmission parameter order can be by one of a plurality of input parameters of this algorithm use simply, to select and to be provided with the suitable parameters value.
Therefore a plurality of parameters can be controlled or influence to control unit 107, this can cause the minimizing of the resource consumption relevant with the transmission of ambience listening data, specifically, by reducing ambience listening transfer of data transmitting power or effective transmission time (or transmission duty ratio), can reduce power consumption and therefore running down of battery and temperature increase.In addition, reduce to increase the capacity of communication system integral body thus by the average interference that caused of transmission.In addition, under the resource consumption that reduces, support environment monitoring service still.Equally, by allowing trading off between control unit control resource use and the ambience listening quality, for current situation, this is best for providing the necessary ambience listening performance of authenticated user.Specifically, when ambience listening when not being most important, this method allows authenticated user to reduce resource to use, simultaneously, when thinking that this is important, the quality that cannot not allow compromisely.Therefore, authenticated user can be finished the ambience listening task, and does not heat or exhaust the battery of remote unit 101 significantly.
In certain embodiments, remote unit 101 is operating as in two kinds of ambience listening transmission modes and operates under the control of transmission control unit (TCU) 115.In some this embodiment, the transmission parameter order that is received can be regulated an operator scheme but not be another operation.For example, remote unit 101 can operate in usually ambience listening mode fully, wherein use all available resources, maybe can operate in the ambience listening mode that reduces, wherein remote unit 101 operates in less resource demand pattern, for example the transmitted power that reduces of subclass by only sending available time slot or use.
In some this embodiment, given transmission parameter order can only be applied to a kind of operator scheme.For example, can send the transmission parameter order, indication is when sending under the operator scheme that is reducing, and remote unit 101 should be skipped every a time slot.Alternatively, the transmission parameter order can combine with the order of the operator scheme that remote unit 101 is entered reduce.
Should understand, in some this embodiment, some transmission parameter order can be only relevant with first operator scheme, and some transmission parameter order can be only relevant with second operator scheme, and some transmission parameter order can be all relevant with two of first and second operator schemes.
In some this embodiment, transmission control unit (TCU) 115 is operating as in response to local characteristic, the operator scheme of control remote unit 101.For example, can receive the transmission parameter order, the use of the operator scheme that it enables to reduce also specifies under the operator scheme alternatively with the characteristic of using.Yet, based on local characteristic, and not receiving specific transmission parameter order, transmission control unit (TCU) 115 can switch between first and second operator schemes.Therefore, the transmission parameter order is provided with the application transport parameter by the pattern that enables to reduce, make thus when can the time, the less resource requirement transmission parameter of remote unit 101 uses.
For example, transmission control unit (TCU) 115 can comprise the sound detection element, and whether whether this sound detection element testing microphone picks up the acoustic environment of any sound or remote unit 101 quiet.In some this embodiment, when detecting sound, transmission control unit (TCU) 115 can be at operation remote unit 101 in the complete ambience listening operator scheme, and is detecting relatively when quiet, operates in the operator scheme that reduces.This can allow remote unit 101 automatically and apace to be adapted to local acoustic environment and can cause significantly reducing of power consumption, heating and interference, and does not unacceptably reduce the ambience listening service.
In certain embodiments, the sound detection element may reside in or comprise the Voice decoder of generation speech detection characteristic.This speech detection characteristic is the indication whether microphone picks up speech, if transmission control unit (TCU) can enter complete ambience listening operator scheme, otherwise enters the operator scheme that reduces.
A possible algorithm that is used for the sound detection element can be determined (on average) sound level simply.For example, can be in suitable filters filtering from the amplifying signal of microphone.The signal of filtering can compare with default volume level, if surpass the given duration, transmission control unit (TCU) 115 can enter complete ambience listening operator scheme.Similarly, if the signal of filtering given duration under predetermined threshold value, transmission control unit (TCU) 115 can be so that remote unit 101 enters the operator scheme that reduces.
Should also be understood that in certain embodiments, can determine characteristic and parameter in response to the transmission parameter order that receives from control unit 107 by the operator scheme algorithm of transmission control unit (TCU) use.For example, can be arranged on the duration of the volume threshold that must surpass before the execution pattern conversion by transmission parameter order from control unit 107.
In certain embodiments, monitored communication unit (for example remote unit 101) can send to operational parameter information monitoring communication unit (for example control unit 107).
For example, substitute to send the ambience listening data, when in the following time of operator scheme that reduces rather than in ambience listening operator scheme fully following time, monitored communication unit can send parameter information.
The extra information that operational parameter information can provide monitoring communication unit to allow its operation of controlling monitored communication unit more exactly is to be suitable for working as precondition.Therefore, in certain embodiments, ambience listening controller 119 and/or instruction control unit 121 utilize operational parameter information to determine the transmission parameter and/or the transmission parameter order of expectation.
Operational parameter information can for example be about the characteristic of monitored communication unit or the information of ambience listening performance.Specifically, operational parameter information can comprise one or more parameters that describe below.
Expectation reduces the heating of monitored communication unit, to reduce the possibility that the ambience listening operation is detected.For example, it is acceptable that temperature increases the 3-4 degree, but preferably no longer raises.Therefore, monitored communication unit can send the operational parameter information of the operating temperature indication that comprises monitored communication unit.This operating temperature can compare with desired value, if it is increased on this value, monitoring communication unit can excite the aforesaid ambience listening operation that reduces.
As previously mentioned, can reduce the power consumption of monitored communication unit by one or more transmission parameters that monitoring communication unit is controlled monitored communication unit.Yet the advantage of this operation and importance depend on the power resource that can use in monitored communication unit.
For example, if monitored communication unit is connected to external power source; For example charger or main power source adapter, monitored communication unit can have enough power resources, and by not being important by changing the power reduction that transmission parameter can obtain.Therefore, operational parameter information can comprise that the external power that is used for monitored communication unit connects indication.External power connects indication can reflect especially whether monitored communication unit is connected to external power source.If monitored communication unit is connected to external power source, monitoring communication unit can allow monitoring communication unit to continue complete ambience listening operation, yet if monitored communication unit only depends on internal power resource (battery), it will use the ambience listening operation that reduces at least in part.
In addition, operational parameter information can be extraly or is alternatively comprised the battery charge indication that is used for monitored communication unit.The battery charge indication can be indicated remaining electric charge in battery especially.For example, remaining power life-span or the percentage charge of estimating can be sent to monitoring communication unit.Monitoring communication unit can be utilized this information Control ambience listening operation.For example, when battery still has high electric charge, can utilize high-quality ambience listening with the high power consumption that is associated, otherwise, along with battery charge reduces, cause increasing the significant power consumption in ground and reduce.
Preferred transmission parameter can depend on the operator scheme of monitored communication unit, so operational parameter information can comprise the operator scheme indication that is used for monitored communication unit.Can use operator scheme by monitoring communication unit, to determine suitable transmission parameter order.
For example, in the TETRA communication system,, still can monitor by execution environment even the user closes monitored communication unit.Preferred transmission parameter depends on whether open monitored communication unit, therefore can comprise the On/Off indication in sending to the operational parameter information of monitoring communication unit.
Can be at any suitable time transmit operation parameter information.In certain embodiments, can be by monitored communication unit transmit operation parameter information, and without any the reciprocation of monitoring communication unit.Yet, in other embodiments, can be in response to request from monitoring communication unit, transmit operation parameter information extraly or alternatively.Therefore, monitoring communication unit can send to monitored communication unit with the operational parameter information request message.When receiving this request message, monitored communication unit correspondingly sends to monitoring communication unit with operational parameter information.This allows monitoring communication unit to determine when needs new information, and can allow the only transmission of executable operations parameter information when needs or expectation.
Hereinafter, illustrate in greater detail the embodiments of the invention that are suitable for the TETRA cellular communication system.In an embodiment, by the transmission of the various message between monitored communication unit and the monitoring communication unit snoop-operations that controls environment.
According to this example, can strengthen the TETRA standard, change transmission parameter to allow monitoring communication unit, make that monitoring communication unit can reduce overall transmission time and/or transmit power level under the situation when not needing the high-quality ambience listening.
In this embodiment, between monitored communication unit and monitoring communication unit,, monitor transmission to control environment with Packet Data Unit (PDU) exchange private environment monitoring information.
PDU below using:
The CTXQ request PDU is issued to monitored communication unit by monitoring communication unit, is used for the configuration call sending method.
The CTXQ response pdus is issued to monitoring communication unit by monitored communication unit, as the response of CTXQ request PDU.This response indication configuration is success or failure.
CTXQ inquires PDU, is issued to monitored communication unit by monitoring communication unit, with the solicit operation parameter information.
CTXQ indicates PDU, in response to CTXQ inquiry PDU, is issued to monitoring communication unit by monitored communication unit.CTXQ indication PDU comprises operational parameter information, and can not receive CTXQ inquiry PDU and replace business datum and be sent out.
Can inquire transmission parameter order among the PDU at CTXQ request PDU and CTXQ, and comprise following parameter:
(in sending (TX) frame) skipped in transmission:
How many time slots are the indication monitored communication unit should skip
Transmitted power changes:
The increase of indication monitored communication unit transmitted power or reduce
Call out inactivity timer (in multiframe):
Indication did not send the interval that the monitored communication unit of voice should be waited for before the ambience listening mode that activation reduces.
PDU can comprise following data field especially:
Fig. 2 illustrates signal flow graph according to an embodiment of the invention.Signal flow illustrates the example of PDU message, carries out this message when the ambience listening mode that excites and support to reduce.
If monitoring communication unit determines currently near remote unit do not have an activity (perhaps because other reasons ambience listening be not important), CTXQ request PDU 201 is sent to monitored communication unit.For example, can send the CTXQ request PDU that comprises following data value:
When monitored communication unit receives this message, the ambience listening mode operation that it uses the special parameter initialization to reduce.Then, CTXQ response pdus 203 is sent to monitoring communication unit, to confirm the successful reception of data.In addition, in message, comprise operational parameter information.The CTXQ response pdus of the data below transmission for example comprises:
Then, monitored communication unit is carried out sound detection, and if in corresponding to the duration of calling out the inactivity timer value, do not detect sound, monitored communication unit enters the transmission mode that reduces.In this pattern, monitored communication unit will be on by the periodic intervals that the TX value of skipping limited or in response to receiving CTXQ inquiry PDU207 and sending CTXQ indication PDU205.
If monitored communication unit detects sound or voice interface, it will withdraw from the transmission mode that reduces and return the normal transmission pattern.
In normal running or ambience listening mode operating period of reducing, monitoring communication unit can further be revised the transmission parameter of monitored communication unit by sending further CTXQ request PDU.Especially, any data from the CTXQ request PDU of waiting a moment can cover the data that received in the previous CTXQ request PDU.
Can realize the present invention with any suitable form, comprise hardware, software, firmware or their any combination.Yet preferably, the present invention realizes with the computer software that moves on one or more data processors and/or digital signal processor at least in part.Can physically, functionally or logically realize the element and the assembly of embodiments of the invention in any suitable manner.In fact, can realize function with the part of individual unit, a plurality of unit or other function element.Like this, can realize the present invention with individual unit or the unit that between different units and processor, distributes physically and functionally.
Although the present invention has been described with reference to preferred embodiment, be not intended to it is restricted to particular form set forth herein.But, only be defined by the following claims scope of the present invention.In the claims, term " comprises " existence of not getting rid of other assemblies or step.In addition, although list individually, can realize multiple arrangement, element or method step by for example individual unit or processor.In addition,, can advantageously make up them, and to be included in the combination of not indicating characteristic in the different claims be infeasible and/or disadvantageous although can in different claims, comprise single feature.In addition, plural number is not got rid of in the odd number indication.Therefore do not get rid of a plurality of to the reference of " a ", " an ", " first ", " second " etc.
Claims (10)
1. system that is used for operating the ambience listening mode relevant with monitored communication unit with the monitoring communication unit of wireless communication system, this system comprises:
Monitoring communication unit has:
Be used for from the device of monitored communication unit reception environment listen mode transmission, described ambience listening mode transmission comprises the ambient sound data, and
Be used at least one transmission parameter order is sent to the device of monitored communication unit; And
Monitored communication unit, it is away from monitoring communication unit and have:
Be used near the device of the reception environment voice data monitored communication unit,
Be used for the ambience listening mode transmission is sent to the device of monitoring communication unit,
Be used to receive device from least one transmission parameter order of monitoring communication unit, and
Be used in response to this at least one transmission parameter order, the device of at least one transmission parameter of ambience listening mode transmission is set.
2. system as claimed in claim 1, wherein at least one transmission parameter comprises a) ambience listening mode transmission continuity parameter, and b) at least one of transmitted power parameter.
3. system as claimed in claim 1, the device that wherein is used to send the ambience listening mode transmission is operating as discontinuously and sends, and at least one transmission parameter comprises the time response of at least one discontinuous transmission.
4. system as claimed in claim 3, wherein time response comprises the duration of a) at least one discontinuous transmission, and b) in the interval between the discontinuous transmission at least one.
5. system as claimed in claim 1, wherein monitored communication unit comprises the device that is used for operational parameter information is sent to monitoring communication unit.
6. system as claimed in claim 5, wherein operational parameter information comprises a) the operating temperature indication of monitored communication unit, b) battery charge of monitored communication unit indication, c) external power source of monitored communication unit connection indication, and d) at least one in the operator scheme indication of monitored communication unit.
7. system as claimed in claim 1, wherein monitored communication unit is operating as and operates in first operator scheme and second operator scheme, wherein at least one transmission parameter is applied to the transmission in second operator scheme rather than first operator scheme.
8. system as claimed in claim 7, wherein monitored communication unit comprises the ambient sound characteristic that is used in response to monitored, device for switching between first operator scheme and second operator scheme.
9. system as claimed in claim 8, wherein monitored ambient sound characteristic is the speech detection characteristic.
10. system as claimed in claim 7, wherein first operator scheme is to monitor operator scheme fully, and second operator scheme is the monitoring pattern that reduces, in the monitoring pattern that reduces, compare with monitoring operator scheme fully, monitored communication unit operates in less resource demand pattern.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0414746.8 | 2004-07-01 | ||
| GB0414746A GB2415862B (en) | 2004-07-01 | 2004-07-01 | A method and a system for operating an ambience listening mode in a wireless communication system |
| PCT/US2005/023473 WO2006007546A1 (en) | 2004-07-01 | 2005-06-30 | A method and a system for operating an ambiance listening mode in a wireless communication system |
Publications (2)
| Publication Number | Publication Date |
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| CN1981452A CN1981452A (en) | 2007-06-13 |
| CN1981452B true CN1981452B (en) | 2011-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800216490A Expired - Fee Related CN1981452B (en) | 2004-07-01 | 2005-06-30 | A method and system for operating an ambience listening mode in a wireless communication system |
Country Status (5)
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| EP (1) | EP1779534A4 (en) |
| CN (1) | CN1981452B (en) |
| AU (1) | AU2005262336B2 (en) |
| GB (1) | GB2415862B (en) |
| WO (1) | WO2006007546A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396133C (en) * | 2006-02-06 | 2008-06-18 | 海信集团有限公司 | Mobile telephone with identity recognition and self-start by listening the environment and its implementation method |
| CN102186227B (en) * | 2011-04-19 | 2013-10-02 | 惠州Tcl移动通信有限公司 | Mobile communication terminal and switching method thereof |
| US10321490B2 (en) | 2016-11-30 | 2019-06-11 | Motorola Solutions, Inc. | Systems and methods for maintaining an ambient monitoring session |
| US9980118B1 (en) * | 2017-04-28 | 2018-05-22 | Motorola Solutions, Inc. | Intelligent ambience listening target selection with multiple concurrent devices |
| EP3588988B1 (en) | 2018-06-26 | 2021-02-17 | Nokia Technologies Oy | Selective presentation of ambient audio content for spatial audio presentation |
| US11523343B2 (en) * | 2019-03-29 | 2022-12-06 | Qualcomm Incorporated | Monitoring wake-up signal using common identifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4640987A (en) * | 1984-04-23 | 1987-02-03 | Keizo Tsukada | Cordless telephone |
| US5239294A (en) * | 1989-07-12 | 1993-08-24 | Motorola, Inc. | Method and apparatus for authenication and protection of subscribers in telecommunication systems |
| CN2448027Y (en) * | 2000-09-05 | 2001-09-12 | 北京新太利通信技术有限责任公司 | Short information data transfer terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5003619A (en) * | 1989-01-31 | 1991-03-26 | Motorola, Inc. | Method and apparatus for adjusting the power of a transmitter |
| US5589818A (en) * | 1993-08-27 | 1996-12-31 | Queen; Andrew | Personal response system with remotely adjustable microphone sensitivity |
| FI96155C (en) * | 1994-03-24 | 1996-05-10 | Nokia Telecommunications Oy | Method for providing ambient listening and a radio unit |
| US6931236B2 (en) * | 2001-11-21 | 2005-08-16 | Kyocera Wireless Corp. | Phone monitoring appliance |
| GB2398966B (en) * | 2003-02-27 | 2005-06-01 | Motorola Inc | Wireless communication system,wireless communication unit and remote control thereof |
| GB2408655B (en) * | 2003-11-27 | 2007-02-28 | Motorola Inc | Communication system, communication units and method of ambience listening thereto |
-
2004
- 2004-07-01 GB GB0414746A patent/GB2415862B/en active Active
-
2005
- 2005-06-30 AU AU2005262336A patent/AU2005262336B2/en not_active Ceased
- 2005-06-30 EP EP05769465A patent/EP1779534A4/en not_active Withdrawn
- 2005-06-30 WO PCT/US2005/023473 patent/WO2006007546A1/en active Application Filing
- 2005-06-30 CN CN2005800216490A patent/CN1981452B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4640987A (en) * | 1984-04-23 | 1987-02-03 | Keizo Tsukada | Cordless telephone |
| US5239294A (en) * | 1989-07-12 | 1993-08-24 | Motorola, Inc. | Method and apparatus for authenication and protection of subscribers in telecommunication systems |
| CN2448027Y (en) * | 2000-09-05 | 2001-09-12 | 北京新太利通信技术有限责任公司 | Short information data transfer terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2005262336B2 (en) | 2009-04-23 |
| EP1779534A1 (en) | 2007-05-02 |
| GB0414746D0 (en) | 2004-08-04 |
| CN1981452A (en) | 2007-06-13 |
| GB2415862A (en) | 2006-01-04 |
| AU2005262336A1 (en) | 2006-01-19 |
| GB2415862B (en) | 2007-03-28 |
| WO2006007546A1 (en) | 2006-01-19 |
| EP1779534A4 (en) | 2010-03-03 |
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