WO2008037180A1 - Procédé de commande de modes à antennes mutliples fondé sur une station - Google Patents
Procédé de commande de modes à antennes mutliples fondé sur une station Download PDFInfo
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- WO2008037180A1 WO2008037180A1 PCT/CN2007/002757 CN2007002757W WO2008037180A1 WO 2008037180 A1 WO2008037180 A1 WO 2008037180A1 CN 2007002757 W CN2007002757 W CN 2007002757W WO 2008037180 A1 WO2008037180 A1 WO 2008037180A1
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- WIPO (PCT)
- Prior art keywords
- terminal
- antenna mode
- base station
- antenna
- supported
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0691—Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0628—Diversity capabilities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0868—Hybrid systems, i.e. switching and combining
- H04B7/0874—Hybrid systems, i.e. switching and combining using subgroups of receive antennas
Definitions
- the present invention relates to a multi-antenna control technology in the field of wireless communication, and more particularly to a terminal-based multi-antenna mode control method.
- BACKGROUND OF THE INVENTION In a wireless communication system, multi-antenna technology is a commonly used technique. According to the principle, multi-antenna technology can be classified into three categories: spatial multiplexing, spatial diversity, and beamforming. The core idea of spatial multiplexing is to use multiple antennas at the transmitting end and the receiving end respectively.
- the core idea of spatial diversity is that the transmitter and the receiver use multiple antennas. By properly arranging the antenna positions or using different polar antennas to generate independent fading channels, the transmitting end encodes and transmits the same signal to different channels. Thus, spatial diversity is obtained. Due to the coding technique, the spatial diversity technique can obtain a certain coding gain in addition to the diversity gain.
- the core idea of beamforming is that the transmitter and receiver use multiple antennas.
- the transmitting end and the receiving end can obtain the same or similar fading channel.
- the difference between different channels is different distance.
- the angle of arrival of the signal can be conveniently obtained, and the processing gain can be obtained by adjusting the phase of the receiving antenna so that the array antenna is aligned with the signal.
- Spatial multiplexing is usually applied to the case of good channel quality.
- Space diversity is suitable for multi-path fading complex environments.
- Beamforming is suitable for outdoor open channel environments with main paths.
- wireless communication systems typically employ only one of the three multi-antenna systems described above.
- a multi-antenna mode control scheme which enables a wireless communication system to include three types of spatial multiplexing, spatial diversity, and beamforming.
- the technology of the mobile terminal and the base station and allows the transmitting and receiving parties to select a suitable antenna mode for data transmission according to a specific channel environment.
- the present invention provides a terminal-based multi-antenna mode control method for enabling a communication system of different systems to establish a commonly supported communication mode in a prescribed multi-antenna mode, thereby enabling both the transmitting and receiving parties. Adapt to choose the appropriate multi-antenna mode for data transmission.
- the terminal-based multi-antenna mode control method of the present invention includes the following steps: Step 1: The terminal reports a set or subset of multiple antenna modes supported by the terminal to the base station; Step 2: The base station returns a set or subset of multiple antenna modes supported by the base station to the terminal Or directly returning a set or subset of multiple antenna modes supported by both the terminal and the base station; and step 3, selecting a multiple antenna mode from the set or subset of multiple antenna modes supported by both the terminal and the base station for communication between the terminal and the base station .
- the terminal sends a frame carrying the multi-antenna mode set or subset information supported by the terminal to the base station in a parsable manner.
- the multi-antenna mode set includes a multi-antenna mode set composed of a transmission antenna pattern and a received antenna pattern that may be supported by all terminals and base stations in accordance with a communication protocol, wherein each multi-antenna mode is composed of the number of antennas of both the transmitting and receiving sides and The corresponding algorithm determines.
- the multi-antenna mode set supported by the terminal refers to the transmitted antenna mode and the received antenna mode supported by all terminals
- the multi-antenna mode subset supported by the terminal refers to the transmitted antenna mode and the received antenna mode supported by the partial terminal.
- the antenna mode transmitted by the same terminal is not equal to the received antenna mode.
- Step 2 includes: after receiving the multi-antenna mode set reported by the terminal, the base station sends a frame to the terminal in a parsable manner, where the frame carries a multi-antenna mode set or subset supported by the base station, or is directly returned by the base station. A set or subset of multiple antenna modes supported by both the terminal and the base station.
- the base station performs the following processing in the step of returning the multi-antenna mode set or subset supported by the base station to the terminal: after receiving the multi-antenna mode set or subset supported by the terminal, the base station learns that both the base station and the terminal communicate with each other.
- step 2 the base station performs the following processing in the step of directly returning the multi-antenna mode set or subset supported by the terminal and the base station: after receiving the multi-antenna mode set or subset supported by the terminal, the base station receives Obtaining a set or subset of multi-antenna modes supported by the base station and the terminal when communicating with the terminal; and a step of the base station returning the set or subset of the multi-antenna pattern supported by the terminal and the base station to the terminal.
- the multi-antenna mode set supported by the base station refers to the transmitted antenna mode and the received antenna mode supported by all base stations
- the multi-antenna mode subset supported by the base station refers to the transmitted antenna mode and the received antenna mode supported by the partial base station.
- the antenna mode transmitted by the same base station is not equal to the received antenna mode.
- the method further includes: using the terminal or the base station as the transmitting end, and selecting a multi-antenna mode from the multi-antenna mode set or the subset supported by the terminal and the base station to perform broadcast, multicast, or unicast.
- the step of selecting a multi-antenna mode from the multi-antenna mode set or the subset supported by the terminal and the base station specifically includes: the transmitting end selects one multi-antenna from the multi-antenna mode set or subset supported by the terminal and the base station.
- the mode sends the mode information to the receiving end in a manner that the receiving end can parse; sends the to-be-transmitted data in the multi-antenna mode, and the receiving end receives and parses the mode information, so as to receive the data in the corresponding multi-antenna mode.
- the step of selecting a multi-antenna mode from the multi-antenna mode set or the subset supported by the terminal and the base station specifically includes: a multi-antenna mode in which the transmitting end and the receiving end agree on the data to be sent in advance, and the transmitting end uses the multi-antenna module.
- Sending data to be sent, the receiving end receives data in a corresponding multi-antenna mode, wherein the multi-antenna mode is one of a multi-antenna mode set or subset supported by both the terminal and the base station.
- the present invention can include a mobile terminal and a base station having three technologies of spatial multiplexing, spatial diversity, and beamforming, and allows the transmitting and receiving parties to select a suitable multi-antenna mode for data transmission according to a specific channel environment, thereby solving the present problem.
- the technical communication system only sets a defect caused by a multi-antenna transmission mode, and can obtain the best transmission quality during data transmission, thereby reducing the number of retransmissions or frame error rate and reducing the network throughput.
- FIG. 1 is a flowchart of a multi-antenna control method in a wireless local area network according to an embodiment of the present invention
- FIG. 2A to FIG. 2C are detailed flowcharts of a multi-antenna control method in a wireless local area network according to an embodiment of the present invention
- 3A and 3B are diagrams of the format of a physical frame of a return frame of one embodiment of the present invention.
- FIG. 1 is a flow chart of a multi-antenna control method in a wireless local area network according to an embodiment of the present invention.
- a station STA reports a set or subset of multiple antenna modes supported by the terminal to a base station (Access Point, AP/radio access point); the base station returns a set of multiple antenna modes supported by the base station to the terminal.
- STA station
- AP/radio access point Access Point, AP/radio access point
- the method for transmitting data in a wireless local area network includes the following steps: Step S102: A terminal reports, to a base station, a multi-antenna mode set or a subset supported by the terminal; specifically, the terminal supports multiple antennas supported by the terminal.
- the mode set or the subset sets the multi-antenna mode information, and writes the setting result into the antenna mode subfield in the Capability Information field in the association request frame, and sends the association request frame to the base station in a manner that the base station can receive. Reports a set or subset of multiple antenna modes supported by the terminal.
- the multi-antenna mode set includes: according to the communication protocol, pre-arranging all the antenna modes and the received antenna modes that the terminal and the base station may support to form a multi-antenna mode set, and each multi-antenna mode is composed of the number of antennas of the transmitting and receiving sides and corresponding
- the algorithm determines that the number of sets of multi-antenna patterns is a countable number of NAs.
- the set or subset of multiple antenna modes supported by the terminal includes: The terminal can support all of the multi-antenna mode set specified by the protocol, and can also support a subset of the multi-antenna mode set.
- the multi-antenna mode set supported by the terminal refers to all transmitted antenna modes and received antenna modes supported by the terminal.
- the multi-antenna mode subset supported by the terminal refers to a part of the transmitted antenna mode and the received antenna mode supported by the terminal.
- the multi-antenna mode set or subset information supported by the terminal refers to information capable of determining a set or subset of multi-antenna modes supported by the terminal.
- the antenna mode transmitted by the same terminal and the received antenna mode may not be equal.
- the terminal supports space-time coded transmission of 2 antennas when transmitting, and supports combined reception of 2 antennas when receiving.
- the method includes: the terminal sends a frame to the base station in a manner that the base station can parse, and the frame carries a multi-antenna mode set or subset supported by the terminal.
- Step S104 The base station returns a multi-antenna mode set or subset supported by the base station to the terminal, or directly returns a multi-antenna mode set or subset supported by the terminal and the base station; specifically: the base station receives the association request frame of the terminal, The set or subset of multi-antenna modes supported by the terminal is learned by parsing the antenna pattern subfield in the association request frame.
- the base station sets the multi-antenna mode information according to the multi-antenna mode set or subset supported by the base station, and writes the setting result into the antenna mode sub-field in the capability information field in the association response frame, and reports the terminal to the terminal by sending the association response frame.
- the multi-antenna mode set or subset supported by the base station includes: The base station can support all of the multi-antenna mode set specified by the protocol, and can also support a subset of the multi-antenna mode set.
- the multi-antenna mode set supported by the base station refers to all transmitted antenna modes and received antenna modes supported by the base station.
- the multi-antenna mode subset supported by the base station refers to a part of the transmitted antenna mode and the received antenna mode supported by the base station.
- the multi-antenna mode set or subset information supported by the base station refers to information capable of determining a set or subset of multi-antenna modes supported by the base station.
- the number of antennas of all the base stations and the corresponding transceiver algorithm code may constitute multi-antenna mode set information supported by the terminal; when the base station supports N (N ⁇ NA) mode, information of all N modes is called The multi-antenna mode set information supported by the base station; according to the application scenario or the specific configuration, the base station only reports the M (M ⁇ N) modes supported by the base station, and the M modes are referred to as multi-antenna mode subset information supported by the base station.
- the antenna mode transmitted by the same base station and the received antenna mode may not be equal.
- the base station supports selective combining transmission of two antennas at the time of transmission, and supports space-time decoding reception of two antennas at the time of reception.
- the step includes: after receiving the multi-antenna mode set or subset reported by the terminal, the base station sends a frame to the terminal in a manner that the terminal can parse, the frame carrying the multi-antenna mode set or subset supported by the base station, or directly Returns a set or subset of multiple antenna modes supported by both the terminal and the base station.
- the base station further includes: after receiving the multi-antenna mode set or subset supported by the terminal, the base station learns that the base station and the terminal communicate and both antennas support and are effective.
- the step of the base station directly returning the multi-antenna mode set or subset supported by the terminal and the base station includes: after receiving the multi-antenna mode set or subset supported by the terminal, the base station learns that both the base station and the terminal communicate and support each other.
- a set or subset of multiple antenna patterns, and a set or subset of multi-antenna patterns supported and valid by both the terminal and the base station are returned to the terminal.
- the base station sets the multi-antenna mode information according to the multi-antenna mode set or subset supported by the base station.
- Step S106 Select a multi-antenna mode to perform communication from a multi-antenna mode set or subset supported by both the terminal and the base station;
- the method further includes: one of the terminal or the base station as the transmitting end, and selecting one multi-antenna mode from the multi-antenna mode set or the subset supported by the terminal and the base station to perform broadcast, multicast, or unicast.
- Selecting a multi-antenna mode from a multi-antenna mode set or subset supported by both the terminal and the base station may be:
- the transmitting end selects a multi-antenna mode from a multi-antenna mode set or subset supported by both the terminal and the base station, and the mode is selected.
- the information is sent in a manner that the receiving end can parse, and then follows the data to be sent transmitted in the multi-antenna mode.
- the receiving end first parses the mode information, and then receives the data sent by the transmitting end in the corresponding mode.
- Selecting a multi-antenna mode from a set or subset of multiple antenna modes supported by both the terminal and the base station may also be: a multi-antenna mode in which the transmitting and receiving parties agree in advance on the to-be-transmitted data, the multi-antenna mode is a multi-antenna supported by both the terminal and the base station A mode set or a subset of the subset, and then the sender sends the pending data in the mode, and the receiver receives the data in the corresponding mode.
- the following two ways are implemented to implement this step.
- the first way is: when the transmitting end is the terminal or the base station, the data to be transmitted is transmitted, and the transmitting end considers the current channel quality factor and one of the factors of the Quality of Service (QoS) requirement of the data to be transmitted or two.
- QoS Quality of Service
- the transmitting end first writes the multi-antenna mode to the field related to the antenna information in the physical frame header when transmitting.
- the physical frame format of the transmitted data is divided into two parts. The first part adopts the basic part. The rate, that is, the most reliable transmission rate, and the physical header portion that can be parsed regardless of whether the receiving end supports the multi-antenna mode, and the second part is the transmission data transmitted in the multi-antenna mode.
- the receiving end can receive and parse the physical frame header, and learn the multi-antenna transmission mode used by the subsequent transmission data from the field related to the antenna information in the physical frame header, and then the receiving end receives the transmission data in the corresponding multi-antenna mode.
- the field related to the antenna information may be multi-antenna mode information, or may be multi-antenna mode and mapping information of modulation and coding modes.
- the second method is that a connection is established between the terminal and the base station, and the establishing manner may be that one of the terminal and the base station sends a connection request first, and in the request, a multi-antenna mode supported by both the transmitting and receiving parties is specified, and the other party responds. confirm.
- one of the terminal and the base station having the transmission data matching the connection can be transmitted in the corresponding multi-antenna mode, and the other party is received in the corresponding multi-antenna mode.
- Multiple connections can be established between the terminal and the base station, and the multiple antenna modes of each connection can be the same or different.
- the transmitting end considers the current channel quality condition factor and one of the quality of service (QoS) requirements of the data to be transmitted or both.
- QoS quality of service
- the consideration of the current channel quality condition may be based on historical experience or statistics or measurements of recent or current transmission conditions.
- a maximum rate transmission or a most reliable transmission or a compromise between the two may be selected from a multi-antenna mode set or subset supported by both the terminal and the base station.
- the method of multi-antenna control in the WLAN of the present embodiment can adopt different multi-antenna modes according to the channel state and the quality of service (QoS) requirements of the data, thereby adapting to changes in channel quality due to mobility or other reasons.
- the method is also applicable to the case of direct communication between the base station and the base station and between the terminal and the terminal. In this step, it also includes a case where one of the two parties does not support the multi-antenna mode.
- FIGS. 3A and 3B are diagrams showing a format of a physical frame of a return frame according to an embodiment of the present invention. Preferred embodiments of the present invention will now be described with reference to the above drawings.
- the process specifically includes: Step 200: After the terminal obtains the authentication, the multi-antenna mode negotiation starts. Step 205: The terminal sets the multi-antenna mode information in the association request frame.
- the multi-antenna mode There are a total of NA types, which are respectively M0 MNA, where M0 means that the multi-antenna mode is not used or the multi-antenna mode is not supported.
- the antenna pattern subfield is represented by NA bits, if the i-th ( 0 i ⁇ NA ) bit is "1" means that the terminal supports the Mi-type multi-antenna mode. For example, when the 2nd and 7th bits of the field are "1" and the remaining bits are "0", the terminal supports M2 and M7 multi-antenna modes.
- the terminal does not support multi-antenna mode, or although multi-antenna mode is supported but multi-antenna mode is not used, it can also be more detailed in other bits of capability information whether or not multi-antenna mode is supported or adopted.
- Step 225 Determine, according to the multi-antenna mode information, whether the terminal associated with the request supports the multi-antenna mode Or if the multi-antenna mode is adopted, if the terminal adopts the multi-antenna mode, step 230 is performed, otherwise, the antenna mode sub-field is set to all zeros, step 235 is performed; step 230, the base station according to the multi-antenna mode set supported by the base station or The subset sets the antenna mode subfield of the association response frame; or according to the base station in step 220, the base station learns the multi-antenna mode set or subset supported by the terminal, and combines the multi-antenna mode set or subset supported by the base station, and supports both the terminal and the base station.
- the antenna mode sub-field of the association response frame is set in the antenna mode set or the subset;
- the transmitting and receiving parties can start communication based on the multi-antenna mode, and the communication based on the multi-antenna mode can be performed in two ways.
- the first mode is completed by steps 250 to 280, as shown in FIG. 2B, and the second mode is
- the process of the method is as follows: Selecting a multi-antenna mode, the selection method may be based on one or both of the channel quality and the QoS requirement of the transmission data;
- Step 255 the sender sets the signaling field of the physical frame header, and selects the multi-antenna mode information.
- the signaling field of the physical frame header is written.
- the signaling field of the specific physical frame header is shown in FIG. 3B.
- Step 260 the transmitting end processes the physical frame header in a manner that the receiving end can receive, for example, according to an implementation convention.
- the physical frame headers are error-correction encoded with a 1/2 convolutional code, and then BPSK (Binary Phase Shift Key) modulation is performed;
- Step 270 The transmitting end combines the physical frame header obtained in step 260 and the processed data to be sent obtained by 265 in the format shown in FIG. 3A, and sends the data to the receiving end.
- Step 275 the receiving end receives the data, and according to FIG. 3B
- the signaling field of the physical frame header is found in the format shown, and the multi-antenna mode information is parsed; and in step 280, the receiving end parses the transmission (reception/transmission) number according to the obtained multi-antenna mode information according to the corresponding algorithm.
- the method for performing communication in the second manner includes: Step 285: The transmitting end selects a multi-antenna mode; specifically, when the transmitting end has data transmission, the transmitting end can select from a multi-antenna mode set or subset supported by the terminal and the base station.
- a multi-antenna mode and the mode is used as multi-antenna mode information, and the selection method of the multi-antenna mode may be based on one or both of channel quality and QoS requirements of transmission data; or the channel quality and transmission data of the transmitting end One or all of the two QoS specifications are used as multi-antenna mode information.
- Step 290 The transmitting end sends a connection establishment request frame to the receiving end, where the multi-antenna mode information is carried in the frame.
- Step 295 The receiving end returns the connection establishment.
- the receiving end parses the multi-antenna mode information and determines the multi-antenna mode by using the information, and the determining method may be directly adopting a multi-antenna mode in which the transmitting end is clear in the multi-antenna mode information, It is also possible to select more combinations of multiple antenna patterns or subsets supported by both the transmitting and receiving parties.
- a suitable multi-antenna mode may also be a more suitable multi-antenna mode based on the channel shield and the QoS specifications of the transmitted data.
- the determined multi-antenna mode is used as the multi-antenna mode information, and the information is written into the connection establishment frame to return to the receiving end; in step 300, the transmitting end sends the data according to the multi-antenna mode information in the connection establishment response frame; and step 305 The receiving end receives the data according to the connected multi-antenna mode corresponding to the received data.
- the present invention is based on terminal initiation, establishing a multi-antenna capability negotiation process between the terminal and the base station, so that communication systems of different systems can establish common support in the specified multi-antenna mode. Communication mode.
- the terminal and the base station can communicate in a multi-antenna mode that is reliable or high-speed and supported by both the transmitting and receiving parties, thereby reducing the frame error rate and improving the throughput. Therefore, the present invention is applicable to a high speed wireless communication system.
- the above are only the preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
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Description
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CA002664742A CA2664742A1 (en) | 2006-09-28 | 2007-09-18 | A multiple antenna mode control method based on station |
BRPI0717085-8A BRPI0717085A2 (pt) | 2006-09-28 | 2007-09-18 | Método de controle no modo de antenas múltiplas baseado em estação |
EP07816373.0A EP2075926B1 (en) | 2006-09-28 | 2007-09-18 | A multiple antenna mode control method based on a station |
US12/442,945 US8441982B2 (en) | 2006-09-28 | 2007-09-18 | Multiple antenna mode control method based on station |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN200610113452.6 | 2006-09-28 | ||
CN2006101134526A CN101155012B (zh) | 2006-09-28 | 2006-09-28 | 一种基于终端的多天线模式控制方法 |
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WO2008037180A1 true WO2008037180A1 (fr) | 2008-04-03 |
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PCT/CN2007/002757 WO2008037180A1 (fr) | 2006-09-28 | 2007-09-18 | Procédé de commande de modes à antennes mutliples fondé sur une station |
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US (1) | US8441982B2 (zh) |
EP (1) | EP2075926B1 (zh) |
CN (1) | CN101155012B (zh) |
BR (1) | BRPI0717085A2 (zh) |
CA (1) | CA2664742A1 (zh) |
WO (1) | WO2008037180A1 (zh) |
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CN102137505B (zh) * | 2010-01-21 | 2015-11-25 | 中兴通讯股份有限公司 | 一种支持多天线工作模式的终端接入网络的方法及系统 |
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CN105376723B (zh) * | 2014-08-21 | 2019-06-14 | 中兴通讯股份有限公司 | 一种实现无线链路处理的方法、基站及终端 |
WO2019090647A1 (zh) | 2017-11-09 | 2019-05-16 | 南通朗恒通信技术有限公司 | 一种被用于无线通信的用户设备、基站中的方法和装置 |
WO2019173975A1 (en) * | 2018-03-13 | 2019-09-19 | Zte Corporation | Transmissions using antenna port sets |
US11882626B1 (en) * | 2020-06-10 | 2024-01-23 | Sprint Spectrum Lp | Selecting antenna configurations based on transmission type |
CN112929065B (zh) * | 2021-01-25 | 2022-08-19 | 维沃移动通信有限公司 | 电子设备控制方法、装置和电子设备 |
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KR100679860B1 (ko) * | 2005-08-19 | 2007-02-07 | 한국전자통신연구원 | Mimo 시스템을 위한 낮은 복잡도의 송/수신 안테나선택 방법 |
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CN1773885A (zh) * | 2004-11-09 | 2006-05-17 | 三星电子株式会社 | 在多天线宽带无线接入系统中支持各种多天线方案的方法 |
CN1780173A (zh) * | 2004-11-17 | 2006-05-31 | 中兴通讯股份有限公司 | 一种多发送天线多接收天线系统中下行链路多用户调度方法 |
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US8441982B2 (en) | 2013-05-14 |
BRPI0717085A2 (pt) | 2013-11-26 |
US20100189030A1 (en) | 2010-07-29 |
EP2075926A1 (en) | 2009-07-01 |
CN101155012B (zh) | 2013-05-01 |
CA2664742A1 (en) | 2008-04-03 |
CN101155012A (zh) | 2008-04-02 |
EP2075926A4 (en) | 2013-09-11 |
EP2075926B1 (en) | 2016-11-02 |
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