WO2000064059A2 - System and method for implementing multiple carriers in cellular networks - Google Patents
System and method for implementing multiple carriers in cellular networks Download PDFInfo
- Publication number
- WO2000064059A2 WO2000064059A2 PCT/SE2000/000740 SE0000740W WO0064059A2 WO 2000064059 A2 WO2000064059 A2 WO 2000064059A2 SE 0000740 W SE0000740 W SE 0000740W WO 0064059 A2 WO0064059 A2 WO 0064059A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- downlink
- primary
- power
- channels
- bandwidth
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
-
- 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
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/32—TPC of broadcast or control channels
- H04W52/322—Power control of broadcast channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/20—Negotiating bandwidth
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
- H04B7/264—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] for data rate control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
-
- 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
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
Definitions
- the present invention relates generally to cellular networks, and specifically to carriers within cellular networks.
- CDMA Code Division Multiple Access
- MSs mobile stations
- CDMA carrier within an IS-95 system usually has a frequency band associated with it that is 1.23 MHz wide, and typically supports approximately twenty subscribers simultaneously.
- WCDMA Wideband CDMA
- a single carrier has a 3.84 MHz frequency band associated with it that typically serves a lot more than twenty subscribers simultaneously.
- Each signal transmitted on either the uplink (from the MS to the base station) or the downlink (from the base station to the MS) consists of a different pseudorandom binary sequence (hereinafter referred to as a code) that modulates the carrier and spreads the spectrum of the waveform.
- a code pseudorandom binary sequence
- each carrier contains a number of different codes that can be allocated to form different user bit rates.
- Traffic channels are used for Traffic channels, while others are used for control channels. Both traffic channels and control channels can be mapped on either dedicated channels or common channels, some of which are power controlled and some of which are non-power controlled.
- the dedicated channels transfer dedicated information to a particular MS.
- the downlink transmitted power is optimized for each channel, according to the distance between the base station and the MS and the interference experienced by the MS.
- An example of such a channel is the Dedicated Channel (DCH) in the WCDMA system.
- DCH Dedicated Channel
- Non-power controlled common channels have a fixed downlink power allocated in order to support coverage over a specific area, such as beyond the borders of the cell. Examples of such channels are the Pilot channel of IS-95 systems and the Synchronization
- SCH Broadcast Channel
- BCH Broadcast Channel
- PCH Paging Channel
- FACH Frequency Channel
- a 95B version of CDMA was introduced.
- an additional uplink and downlink carrier is added with a reduced set of control channels.
- a first downlink carrier consists of all of the control channels, and a second carrier consists of only the Pilot channel of the control channels and up to 63 downlink Traffic channels.
- the additional uplink carrier is symmetrical to the additional downlink carrier (equal air interface bandwidth on both).
- the MS is still restricted in that it can only allocate Traffic channel(s) from one of the carriers during a call.
- the Pilot channel since the Pilot channel has a high downlink transmit power associated with it to support general coverage over a specific area (typically beyond the border of the cell), by keeping the Pilot channel on the second carrier, the transmit power allocated to Pilot channel will force the downlink transmit power allocation of Traffic channels to significantly higher power levels, due to downlink interference. This increases the interference in the cell and increases the size and weight of Multi/Single Carrier Amplifiers used in CDMA cells.
- the carriers for the uplink and downlink directions each contain an equal amount air-interface bandwidth.
- the same amount of spectrum is typically used for both directions for a call.
- a user may be able to establish a non-symmetrical connection for certain services defined by the operator, the cellular systems of today do not have the flexibility required to allow an operator to allocate non-symmetrical bandwidth over the air-interface for any call.
- the present invention is directed to telecommunications systems and methods for efficient and flexible usage of bandwidth within a code division multiple access (CDMA) cell.
- CDMA code division multiple access
- Multiple carriers can be included within a CDMA cell, in which a different number of carriers can be allocated to downlink transmissions and uplink transmissions.
- a mobile station MS can allocate downlink bandwidth from different carriers to contribute to a Traffic channel, making it possible to form high user bit-rates, e ⁇ g.. 4 Mbps.
- the cell can contain a Primary carrier with at least non-power controlled common channels and at least one Secondary carrier with only dedicated channels and optionally power- controlled common channels.
- the Primary carrier has a primary scrambling code and zero or more secondary scrambling codes for scrambling transmissions over a first CDMA bandwidth, while the Secondary carrier consists of one or more secondary scrambling codes for scrambling transmissions over a second CDMA bandwidth.
- the primary scrambling code is used to scramble non-power controlled channels as well as power-controlled channels, while the secondary scrambling code is used to scramble only power-controlled channels (common or dedicated).
- FIGURE 1 illustrates a code division multiple access (CDMA) cell structure having at least two carriers on the downlink per cell in accordance with embodiments of the present invention
- FIGURE 2 is a class diagram of cell definition on the downlink for a CDMA code division multiple access (CDMA) cell structure having at least two carriers on the downlink per cell in accordance with embodiments of the present invention
- CDMA cell having a Primary carrier and at least one Secondary carrier
- FIGURE 3 is a class diagram of an alternative cell definition on the downlink for a CDMA cell having a Primary carrier and at least one Secondary carrier; and FIGURES 4 A and 4B illustrate the non-symmetrical allocation of downlink bandwidth to a mobile station within a CDMA cell.
- FIGURE 1 of the drawings a cell structure for a code division multiple access (CDMA) telecommunications system is illustrated in accordance with embodiments of the present invention.
- CDMA code division multiple access
- a base station 100 has three antenna pointing azimuths 110, 120 and 130, in which each antenna pointing azimuth 110, 120 and 130 is directed towards a separate cell 210, 220 and 230, respectively.
- each cell 210. 220 and 230 can utilize the same or different frequency bands for uplink and downlink transmissions.
- each cell 210, 220 and 230 is provided with at least three carriers, two of which are shown and designated by reference numbers 250 and 260, each being associated with a different frequency band.
- One carrier is for the uplink (not shown), one carrier 250 is for the downlink and at least one more carrier 260 is for either the downlink or uplink or both, the former being illustrated.
- carriers 250 and 260 are assigned in pairs for the uplink and downlink (termed Frequency Division Duplex mode paired bands). In this case, to allow for flexibility in allocation of downlink bandwidth, each carrier 250 and 260 can be reserved for a different type of use.
- the operator can use one carrier (not shown) for the uplink, two carriers 250 and 260 for the downlink, as is shown in FIGURE 1 , and the fourth carrier (not shown) for another use, or for use by another operator.
- assigning each carrier 250 and 260 individually to a different purpose allows for non-symmetrical allocation of air-interface spectrum for the downlink and uplink.
- a cell 210 in order for a cell 210 to have more downlink resources than what is possible with only one carrier (one frequency band), a cell 210 can have at least one Primary downlink carrier 250 capable of transmitting all channel types 300-320 and at least one Secondary downlink carrier 260 capable of transmitting only dedicated channels 300 and optionally power controlled common channels 310.
- the Primary carrier 250 has a primary scrambling code 270 plus zero or more secondary scrambling codes 280 associated therewith, while the Secondary carrier 260 has one or more secondary scrambling codes 280 associated therewith.
- the primary scrambling code 270 scrambles all of the channels, such as the dedicated channels 300, power controlled common channels 310 and non-power controlled common channels 330, whereas the secondary scrambling code 280 scrambles only dedicated channels 300 and optionally power controlled common channels 310, as is shown.
- the main purpose of the secondary scrambling code 280 is to scramble traffic channels, which can be mapped on either dedicated channels 300 or power controlled common channels
- the secondary scrambling code 280 in the Primary carrier 250 can be used to increase the number of channels to the carrier if the interference allows for it.
- the Secondary carrier(s) 260 do not have non-power controlled common channels, the system capacity is increased, as only one carrier
- FIGURE 3 of the drawings a class diagram of an alternative cell definition on the downlink for a CDMA cell having at least one Primary carrier 250 and at least one Secondary carrier 260 is illustrated.
- the Primary carrier 250 has a primary scrambling code 270 associated with it, while the Secondary carrier 260 has one or more secondary scrambling codes 280 associated with it.
- the Primary carrier 250 does not have any secondary scrambling codes 280 associated with it, and the primary scrambling code 270 scrambles all non-power controlled common channels 320, such as the Pilot channel of the IS-95 system and the Synchronization Broadcast Channel and
- the non-power- controlled common channels 320 have a fixed downlink transmitted power to support general coverage over a specific area. In most cases, the transmit power is dimensioned so that a non-power-controlled control signal can be received by MSs beyond the border of the cell 210.
- the secondary scrambling code 280 is only associated with the Secondary carrier 260 and is responsible for scrambling all of the power-controlled channels, such as dedicated channels 300 and any power controlled common channels 310. It should be understood that the channel estimation and power control for dedicated channels 300 and power-controlled common channels 310 on the Secondary carrier 260 is supported by pilots (not shown) allocated on these channels within the Secondary carrier 260.
- the problem with allocating non-power controlled common channels 320 and dedicated channels 300 to the same carrier is that the transmit power allocated to the non-power controlled common channels 320 will force the downlink transmit power allocation of dedicated channels 300 to significantly higher power levels, due to downlink interference. Therefore, when there are two or more carriers (Primary 250 and Secondary 260) allocated to a cell 210 covering the same area, by removing all of the non-power controlled downlink common channels 320 from one of the carriers (Secondary carrier 260), the total downlink transmitted power on the dedicated channels 300 is reduced. In addition, by including the dedicated channels 300 on only the
- Secondary carrier 260 with optionally the power controlled downlink common channels 310, the total transmit output power within the cell 210 as a whole is reduced. Also, by optionally dividing the power controlled 310 and non-power controlled common channels 320 into two separate carriers 260 and 250, respectively, an example of which is shown in FIGURE 3, the downlink interference is generally reduced in a cell 210, which is essential for CDMA capacity.
- MCPA/SCPA Multi/Single Carrier Amplifiers
- non-power controlled common channels 320 are included on the Primary carrier 250, a narrow bandwidth can be allocated for the Primary carrier 250 and a wider bandwidth can be allocated to the Secondary carrier(s) 260.
- the Primary carrier 250, supporting non-power controlled common channels for CDMA/WCDMA could even be located in the frequency band of another cellular system, e.g., GSM frequency band.
- the Primary carrier 250 (with non-power controlled common channels 320) for each cell 210 can be assigned to the same frequency within the base station (for three-sector cell structures) and/or within the entire network.
- the Secondary carrier(s) 260 for each cell 210 could also be assigned the same respective frequency within the base station and/or within the entire network.
- the cell concept described in FIGURE 2 or FIGURE 3 can be defined in such a way that the MS 150 can allocate non-symmetrical downlink bandwidth as compared to uplink bandwidth for a call.
- the MS 150 can establish a high bit-rate connection, e.g., 4 Mbps, by adding resources in the cell 210 among available channels within one of the downlink carriers.
- a high bit-rate connection e.g., 4 Mbps
- an up-link channel 245 within an uplink carrier 240 can be assigned to the MS 150 by the base station 100, as usual. If the MS 150 requires additional downlink bandwidth, the MS 150 can request non-symmetrical downlink bandwidth. Since there are two available downlink carriers (Primary 250 and Secondary 260), the base station 100 can assign multiple channels 255 and 256 from one of the carriers (here the
- the different assigned channels 255 and 256 can use different scrambling codes within the carrier (i.e. primary scrambling code 270 and zero or more secondary scrambling codes 280).
- the MS 150 can allocate resources from different downlink carriers 250 and 260 belonging to the same cell 210 to contribute to a single traffic channel 330.
- the base station 100 can assign one or more channels 255 from the Primary carrier 250 using the primary scrambling code 270 and/or one or more secondary scrambling codes 280, and one or more channels 265 from the Secondary carrier 260 using one or more secondary scrambling codes 280 to the MS 150 to make up the traffic channel 330. Therefore, embodiments of the present invention allow for a multi-carrier radio- link connection in a cell 210 to the MS 150.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU44456/00A AU4445600A (en) | 1999-04-19 | 2000-04-18 | System and method for implementing multiple carriers in cellular networks |
CA002370695A CA2370695A1 (en) | 1999-04-19 | 2000-04-18 | System and method for implementing multiple carriers in cellular networks |
EP00925827.8A EP1192732B1 (en) | 1999-04-19 | 2000-04-18 | System and method for implementing multiple carriers in cellular networks |
KR1020017013230A KR100627965B1 (en) | 1999-04-19 | 2000-04-18 | System and method for implementing multiple carriers in cellular networks |
JP2000613082A JP2002542707A (en) | 1999-04-19 | 2000-04-18 | System and method for using multiple carriers in a cellular network |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13006999P | 1999-04-19 | 1999-04-19 | |
US60/130,069 | 1999-04-19 | ||
US09/548,523 | 2000-04-13 | ||
US09/548,523 US6804214B1 (en) | 1999-04-19 | 2000-04-13 | System and method for implementing multiple carriers in cellular networks |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000064059A2 true WO2000064059A2 (en) | 2000-10-26 |
WO2000064059A3 WO2000064059A3 (en) | 2001-02-08 |
Family
ID=26828150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2000/000740 WO2000064059A2 (en) | 1999-04-19 | 2000-04-18 | System and method for implementing multiple carriers in cellular networks |
Country Status (9)
Country | Link |
---|---|
US (1) | US6804214B1 (en) |
EP (1) | EP1192732B1 (en) |
JP (1) | JP2002542707A (en) |
KR (1) | KR100627965B1 (en) |
CN (1) | CN1132334C (en) |
AU (1) | AU4445600A (en) |
CA (1) | CA2370695A1 (en) |
TW (1) | TW459451B (en) |
WO (1) | WO2000064059A2 (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1359782A1 (en) * | 2002-05-03 | 2003-11-05 | Samsung Electronics Co., Ltd. | Apparatus and method for providing service based on multiple data rates in mobile communication system |
EP1566909A1 (en) * | 2004-02-23 | 2005-08-24 | Siemens Aktiengesellschaft | Method and device for downlink radio communication using non-orthogonal codes |
WO2006000135A1 (en) | 2004-06-29 | 2006-01-05 | Zte Corporation | A method for adjusting dynamically subsidiary carrier frequency in the multiple carrier frequencies cell |
WO2006126080A1 (en) * | 2005-05-26 | 2006-11-30 | Nokia Corporation | Method and apparatus for specifying channel state information for multiple carriers |
CN100369388C (en) * | 2004-12-29 | 2008-02-13 | 中兴通讯股份有限公司 | Method for variable distributing power of down going time slot and distributing load |
CN100388808C (en) * | 2002-12-24 | 2008-05-14 | 阿尔卡特公司 | Information broadcasting method for terminal in wireless communication network and terminal therewith |
US7386306B2 (en) | 2004-04-15 | 2008-06-10 | Qualcomm Incorporated | Multi-carrier communications methods and apparatus |
CN100403669C (en) * | 2002-01-23 | 2008-07-16 | 华为技术有限公司 | Method for providing real time broadcasting service in mobile communication network |
CN100407853C (en) * | 2004-08-10 | 2008-07-30 | 中兴通讯股份有限公司 | Multi-carrier frequency cell major and minor carrier frequency adjusting method in TD-SCDMA system |
WO2010031066A2 (en) * | 2008-09-15 | 2010-03-18 | Qualcomm Incorporated | Interference management in a multi-carrier communication system |
WO2010037325A1 (en) * | 2008-09-23 | 2010-04-08 | 华为技术有限公司 | Method, device and system for selecting downlink main carrier to transmit data |
CN1917411B (en) * | 2005-08-16 | 2012-03-07 | 中兴通讯股份有限公司 | System and method for realization of accessing high speed down going packets in multiple carriers |
US8169953B2 (en) | 2005-05-17 | 2012-05-01 | Qualcomm Incorporated | Method and apparatus for wireless multi-carrier communications |
CN103826315A (en) * | 2008-12-02 | 2014-05-28 | 三星电子株式会社 | User device for searching scheduling assignments and method thereof |
USRE45236E1 (en) | 2003-11-06 | 2014-11-11 | Qualcomm Incorporated | Multi-channel binding in data transmission |
Families Citing this family (51)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7184426B2 (en) | 2002-12-12 | 2007-02-27 | Qualcomm, Incorporated | Method and apparatus for burst pilot for a time division multiplex system |
US9118387B2 (en) | 1997-11-03 | 2015-08-25 | Qualcomm Incorporated | Pilot reference transmission for a wireless communication system |
US8064409B1 (en) * | 1999-08-25 | 2011-11-22 | Qualcomm Incorporated | Method and apparatus using a multi-carrier forward link in a wireless communication system |
US6621804B1 (en) | 1999-10-07 | 2003-09-16 | Qualcomm Incorporated | Method and apparatus for predicting favored supplemental channel transmission slots using transmission power measurements of a fundamental channel |
US6973098B1 (en) | 2000-10-25 | 2005-12-06 | Qualcomm, Incorporated | Method and apparatus for determining a data rate in a high rate packet data wireless communications system |
US7068683B1 (en) | 2000-10-25 | 2006-06-27 | Qualcomm, Incorporated | Method and apparatus for high rate packet data and low delay data transmissions |
US7006483B2 (en) | 2001-02-23 | 2006-02-28 | Ipr Licensing, Inc. | Qualifying available reverse link coding rates from access channel power setting |
JP3802372B2 (en) * | 2001-05-16 | 2006-07-26 | 株式会社エヌ・ティ・ティ・ドコモ | Mobile communication system |
US6956836B2 (en) * | 2001-05-17 | 2005-10-18 | Ericsson, Inc. | Asymmetric frequency allocation for packet channels in a wireless network |
DE60329464D1 (en) * | 2002-01-23 | 2009-11-12 | Huawei Tech Co Ltd | METHOD FOR PROVIDING A REAL-TIME RUNNING SERVICE IN THE MOBILE COMMUNICATION NETWORK |
JP4128880B2 (en) * | 2003-01-16 | 2008-07-30 | 株式会社エヌ・ティ・ティ・ドコモ | Radio control apparatus and spreading code selection method |
JP3999683B2 (en) * | 2003-02-17 | 2007-10-31 | 株式会社エヌ・ティ・ティ・ドコモ | Wireless communication method and base station |
US8559406B2 (en) | 2003-06-03 | 2013-10-15 | Qualcomm Incorporated | Method and apparatus for communications of data in a communication system |
JP4763599B2 (en) * | 2003-06-13 | 2011-08-31 | シーメンス アクチエンゲゼルシヤフト | Power control apparatus for mobile radio communication system |
JP4623978B2 (en) * | 2004-02-18 | 2011-02-02 | 日本電気株式会社 | Mobile communication system, communication control method therefor, radio network controller and base station used therefor |
CN100388855C (en) * | 2004-08-14 | 2008-05-14 | 中兴通讯股份有限公司 | Method for adjusting assistant carrier frequency dynamically in multi-carrier frequency cell |
CN100407598C (en) * | 2004-07-13 | 2008-07-30 | 中兴通讯股份有限公司 | A multi-carrier based public physical channel assignment method |
CN100359981C (en) * | 2004-07-27 | 2008-01-02 | 中兴通讯股份有限公司 | Method for covering multiple sectors at same time in TD-SCDMA |
CN100361558C (en) * | 2004-07-29 | 2008-01-09 | 华为技术有限公司 | Realization method for building and reconfiguring multicarrier sector |
CN100352306C (en) * | 2004-08-04 | 2007-11-28 | 中兴通讯股份有限公司 | TD-SCDMA system cell multi-carrier frequency covering method |
CN100377540C (en) * | 2004-08-07 | 2008-03-26 | 华为技术有限公司 | Multi-carrier frequency system access method |
CN100393161C (en) * | 2004-08-16 | 2008-06-04 | 中兴通讯股份有限公司 | Method for increasing band availability ratio using array space division character |
CN100382641C (en) * | 2004-08-17 | 2008-04-16 | 中兴通讯股份有限公司 | Channel allocation method for multi-carrier CDMA system |
US7733831B2 (en) * | 2004-08-23 | 2010-06-08 | Alcatel-Lucent Usa Inc. | Detecting a wireless network air interface |
CN100372434C (en) * | 2004-09-08 | 2008-02-27 | 华为技术有限公司 | Configuration of special channel with multiple carrier frequency |
CN1783861B (en) * | 2004-12-01 | 2011-04-13 | 华为技术有限公司 | Method for realizing frequency soft multiplexing in radio communication system |
CN100382635C (en) * | 2005-02-18 | 2008-04-16 | 大唐移动通信设备有限公司 | Method for establishing multiple carrier frequency samll area |
US20060233150A1 (en) * | 2005-04-15 | 2006-10-19 | George Cherian | Method and apparatus for providing control channel monitoring in a multi-carrier system |
CN100417292C (en) * | 2005-05-19 | 2008-09-03 | 华为技术有限公司 | Method for regulating public channel bandwidth |
US7313109B2 (en) * | 2005-06-01 | 2007-12-25 | Sprint Spectrum L.P. | Method and system for selective usage of broadband forward link |
US9955438B2 (en) | 2005-09-27 | 2018-04-24 | Qualcomm Incorporated | Method and apparatus for carrier allocation and management in multi-carrier communication systems |
CN101273601A (en) * | 2005-09-27 | 2008-09-24 | 高通股份有限公司 | Method and apparatus for carrier allocation and management in multi-carrier communication systems |
US8693430B2 (en) | 2005-09-28 | 2014-04-08 | Neocific, Inc. | Method and system for multi-carrier packet communication with reduced overhead |
WO2007038750A1 (en) * | 2005-09-28 | 2007-04-05 | Neocific, Inc. | Method and system for multi-carrier packet communication with reduced overhead |
CN100421497C (en) * | 2005-09-29 | 2008-09-24 | 普天信息技术研究院 | Method for allocating multiple carrier-frequency domain |
CN101278584B (en) * | 2005-10-03 | 2012-11-28 | 艾利森电话股份有限公司 | Carrier wave distribution with optimized throughput |
CN1953364B (en) * | 2005-10-20 | 2010-05-05 | 华为技术有限公司 | A realization method for channel in multicarrier wave system cell |
CN1983918A (en) * | 2005-12-12 | 2007-06-20 | 华为技术有限公司 | Method and access equipment for realizing soft-frequency duplexing and transmitting data |
CN100461957C (en) * | 2006-01-11 | 2009-02-11 | 中兴通讯股份有限公司 | Measuring control method in multiple carrier frequency time-division synchronous CDMA system |
CN101146343B (en) * | 2006-09-13 | 2010-05-19 | 联想(北京)有限公司 | A bandwidth resource allocation method and device in mobile communication system |
CN103402239B (en) * | 2007-04-11 | 2017-07-04 | 奥普蒂斯无线技术有限责任公司 | For the information on reference signal structure of neighbor cell measurement |
US8036702B2 (en) * | 2007-05-14 | 2011-10-11 | Intel Corporation | Method and apparatus for multicarrier communication in wireless systems |
KR101516017B1 (en) * | 2007-05-16 | 2015-05-04 | 삼성전자주식회사 | Method and apparatus for transmitting/receiving pilot signal in wireless communication system |
US8428077B2 (en) * | 2008-03-31 | 2013-04-23 | Qualcomm Incorporated | Methods and apparatus for dynamic load balancing with E-AICH |
CN101562588B (en) * | 2008-04-18 | 2012-05-30 | 财团法人工业技术研究院 | Wireless signal transmitting method and transmitter |
EP2286616A2 (en) * | 2008-04-25 | 2011-02-23 | Interdigital Patent Holdings, Inc. | Method and apparatus for cell reselection in a mobile communications network |
US9591563B2 (en) * | 2009-07-01 | 2017-03-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Power efficient data transmission |
EP2966910A1 (en) * | 2009-09-02 | 2016-01-13 | BlackBerry Limited | Cqi operation in multicarrier wireless systems |
US8811200B2 (en) | 2009-09-22 | 2014-08-19 | Qualcomm Incorporated | Physical layer metrics to support adaptive station-dependent channel state information feedback rate in multi-user communication systems |
US20140029582A1 (en) * | 2012-07-27 | 2014-01-30 | Qualcomm Incorporated | Method and apparatus for a power control mechanism |
US11206705B2 (en) | 2018-07-23 | 2021-12-21 | At&T Mobility Ii Llc | Flexible carrier downlink and uplink pairing for advanced networks |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5341397A (en) * | 1992-04-13 | 1994-08-23 | Telefonaktiebolaget L M Ericsson | CDMA frequency allocation |
WO1994029981A1 (en) * | 1993-06-14 | 1994-12-22 | Telefonaktiebolaget Lm Ericsson | Non-continuous transmission for seamless handover in ds-cdma systems |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5164958A (en) * | 1991-05-22 | 1992-11-17 | Cylink Corporation | Spread spectrum cellular handoff method |
US5715235A (en) * | 1993-11-26 | 1998-02-03 | Ntt Mobile Communications Network Inc. | Communication system capable of performing FDMA transmission |
US6101176A (en) * | 1996-07-24 | 2000-08-08 | Nokia Mobile Phones | Method and apparatus for operating an indoor CDMA telecommunications system |
US5956368A (en) * | 1997-08-29 | 1999-09-21 | Telefonaktiebolaget Lm Ericsson | Downlink channel handling within a spread spectrum communications system |
JP3224362B2 (en) * | 1997-09-01 | 2001-10-29 | 株式会社エヌ・ティ・ティ・ドコモ | How to use mobile communication frequency |
US6389000B1 (en) * | 1997-09-16 | 2002-05-14 | Qualcomm Incorporated | Method and apparatus for transmitting and receiving high speed data in a CDMA communication system using multiple carriers |
KR20000024783A (en) * | 1998-10-01 | 2000-05-06 | 정선종 | Base station system of multi carrier wave cdma method, method for generate multi code waveform, and mobile communication system using the same |
WO2000022851A1 (en) * | 1998-10-15 | 2000-04-20 | Airnet Communications Corporation | Dynamic allocation of carrier frequencies in a wireless broadband base station |
US6192040B1 (en) * | 1999-04-16 | 2001-02-20 | Motorola, Inc. | Method and apparatus for producing channel estimate of a communication channel in a CDMA communication system |
US6556551B1 (en) * | 1999-05-27 | 2003-04-29 | Lgc Wireless, Inc. | Multi-frequency pilot beacon for CDMA systems |
US6377636B1 (en) * | 1999-11-02 | 2002-04-23 | Iospan Wirless, Inc. | Method and wireless communications system using coordinated transmission and training for interference mitigation |
-
2000
- 2000-04-13 US US09/548,523 patent/US6804214B1/en not_active Expired - Lifetime
- 2000-04-18 CN CN008091889A patent/CN1132334C/en not_active Expired - Fee Related
- 2000-04-18 AU AU44456/00A patent/AU4445600A/en not_active Abandoned
- 2000-04-18 JP JP2000613082A patent/JP2002542707A/en not_active Withdrawn
- 2000-04-18 EP EP00925827.8A patent/EP1192732B1/en not_active Expired - Lifetime
- 2000-04-18 KR KR1020017013230A patent/KR100627965B1/en active IP Right Grant
- 2000-04-18 CA CA002370695A patent/CA2370695A1/en not_active Abandoned
- 2000-04-18 WO PCT/SE2000/000740 patent/WO2000064059A2/en active IP Right Grant
- 2000-04-19 TW TW089107371A patent/TW459451B/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5341397A (en) * | 1992-04-13 | 1994-08-23 | Telefonaktiebolaget L M Ericsson | CDMA frequency allocation |
WO1994029981A1 (en) * | 1993-06-14 | 1994-12-22 | Telefonaktiebolaget Lm Ericsson | Non-continuous transmission for seamless handover in ds-cdma systems |
Non-Patent Citations (1)
Title |
---|
1998 IEEE, Volume, 1998, J. Nyström et al., "Comparison Of Cell Search Methods for Asynchronous Wideband CDMA Cellular System" page 783 - page 787, XP002901327 * |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100403669C (en) * | 2002-01-23 | 2008-07-16 | 华为技术有限公司 | Method for providing real time broadcasting service in mobile communication network |
EP1359782A1 (en) * | 2002-05-03 | 2003-11-05 | Samsung Electronics Co., Ltd. | Apparatus and method for providing service based on multiple data rates in mobile communication system |
AU2003230249B2 (en) * | 2002-05-03 | 2007-01-04 | Samsung Electronics Co., Ltd. | Apparatus and method for providing service based on multiple data rates in mobile communication system |
CN100388808C (en) * | 2002-12-24 | 2008-05-14 | 阿尔卡特公司 | Information broadcasting method for terminal in wireless communication network and terminal therewith |
USRE45236E1 (en) | 2003-11-06 | 2014-11-11 | Qualcomm Incorporated | Multi-channel binding in data transmission |
EP1566909A1 (en) * | 2004-02-23 | 2005-08-24 | Siemens Aktiengesellschaft | Method and device for downlink radio communication using non-orthogonal codes |
US7386306B2 (en) | 2004-04-15 | 2008-06-10 | Qualcomm Incorporated | Multi-carrier communications methods and apparatus |
US8068841B2 (en) | 2004-04-15 | 2011-11-29 | Qualcomm Incorporated | Multi-carrier communications methods and apparatus |
EP1768291A1 (en) * | 2004-06-29 | 2007-03-28 | ZTE Corporation | A method for adjusting dynamically subsidiary carrier frequency in the multiple carrier frequencies cell |
WO2006000135A1 (en) | 2004-06-29 | 2006-01-05 | Zte Corporation | A method for adjusting dynamically subsidiary carrier frequency in the multiple carrier frequencies cell |
EP1768291A4 (en) * | 2004-06-29 | 2011-06-15 | Zte Corp | A method for adjusting dynamically subsidiary carrier frequency in the multiple carrier frequencies cell |
CN100407853C (en) * | 2004-08-10 | 2008-07-30 | 中兴通讯股份有限公司 | Multi-carrier frequency cell major and minor carrier frequency adjusting method in TD-SCDMA system |
CN100369388C (en) * | 2004-12-29 | 2008-02-13 | 中兴通讯股份有限公司 | Method for variable distributing power of down going time slot and distributing load |
US8169953B2 (en) | 2005-05-17 | 2012-05-01 | Qualcomm Incorporated | Method and apparatus for wireless multi-carrier communications |
WO2006126080A1 (en) * | 2005-05-26 | 2006-11-30 | Nokia Corporation | Method and apparatus for specifying channel state information for multiple carriers |
CN1917411B (en) * | 2005-08-16 | 2012-03-07 | 中兴通讯股份有限公司 | System and method for realization of accessing high speed down going packets in multiple carriers |
WO2010031066A3 (en) * | 2008-09-15 | 2010-06-03 | Qualcomm Incorporated | Interference management in a multi-carrier communication system |
US9143946B2 (en) | 2008-09-15 | 2015-09-22 | Qualcomm Incorporated | Interference management in a multi-carrier communication system |
WO2010031066A2 (en) * | 2008-09-15 | 2010-03-18 | Qualcomm Incorporated | Interference management in a multi-carrier communication system |
WO2010037325A1 (en) * | 2008-09-23 | 2010-04-08 | 华为技术有限公司 | Method, device and system for selecting downlink main carrier to transmit data |
US8908649B2 (en) | 2008-09-23 | 2014-12-09 | Huawei Technologies Co., Ltd. | Method and apparatus for selecting downlink primary carrier for transmitting data |
US9839021B2 (en) | 2008-09-23 | 2017-12-05 | Huawei Technologies Co., Ltd. | Method and apparatus for selecting downlink primary carrier for transmitting data |
CN103826315A (en) * | 2008-12-02 | 2014-05-28 | 三星电子株式会社 | User device for searching scheduling assignments and method thereof |
US9510364B2 (en) | 2008-12-02 | 2016-11-29 | Samsung Electronics Co., Ltd | Transmission of scheduling assignments in multiple operating bandwidths |
US10129904B2 (en) | 2008-12-02 | 2018-11-13 | Samsung Electronics Co., Ltd | Transmission of scheduling assignments in multiple operating bandwidths |
US10694538B2 (en) | 2008-12-02 | 2020-06-23 | Samsung Electronics Co., Ltd. | Transmission of scheduling assignments in multiple operating bandwidths |
Also Published As
Publication number | Publication date |
---|---|
CN1357179A (en) | 2002-07-03 |
EP1192732A2 (en) | 2002-04-03 |
JP2002542707A (en) | 2002-12-10 |
KR100627965B1 (en) | 2006-09-26 |
CA2370695A1 (en) | 2000-10-26 |
WO2000064059A3 (en) | 2001-02-08 |
TW459451B (en) | 2001-10-11 |
KR20020006035A (en) | 2002-01-18 |
CN1132334C (en) | 2003-12-24 |
US6804214B1 (en) | 2004-10-12 |
AU4445600A (en) | 2000-11-02 |
EP1192732B1 (en) | 2014-12-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6804214B1 (en) | System and method for implementing multiple carriers in cellular networks | |
US11012998B2 (en) | Multi-beam cellular communication system | |
EP1078543B1 (en) | Code allocation for sectorised radiocommunication systems | |
US5844894A (en) | Time-reuse partitioning system and methods for cellular radio telephone systems | |
US5793757A (en) | Telecommunication network having time orthogonal wideband and narrowband sytems | |
US7742788B2 (en) | Method and apparatus for using switched multibeam antennas in a multiple access communication system | |
US8180354B2 (en) | Method for allocating radio resource in multi-carrier time division duplex mobile communication system | |
US7177298B2 (en) | Dynamic channel allocation in multiple-access communication systems | |
JP2812318B2 (en) | Spread spectrum communication method and apparatus | |
US7408974B2 (en) | Composite code-division/time-division multiplex system | |
CA2290579C (en) | Asymmetric channel allocation for a mobile station in a cdma communication network | |
JP3315869B2 (en) | Cell selection method in CDMA mobile communication system | |
JP2002359608A (en) | Base station and remote station |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 00809188.9 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
AK | Designated states |
Kind code of ref document: A3 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A3 Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2000925827 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020017013230 Country of ref document: KR |
|
ENP | Entry into the national phase |
Ref document number: 2000 613082 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2370695 Country of ref document: CA Ref document number: 2370695 Country of ref document: CA Kind code of ref document: A |
|
WWP | Wipo information: published in national office |
Ref document number: 1020017013230 Country of ref document: KR |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWP | Wipo information: published in national office |
Ref document number: 2000925827 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1020017013230 Country of ref document: KR |