WO2012010017A1 - Procédé et système permettant de mettre en oeuvre une sélection d'antennes dans un système de relais entrée multiple sortie multiple - Google Patents

Procédé et système permettant de mettre en oeuvre une sélection d'antennes dans un système de relais entrée multiple sortie multiple Download PDF

Info

Publication number
WO2012010017A1
WO2012010017A1 PCT/CN2011/075524 CN2011075524W WO2012010017A1 WO 2012010017 A1 WO2012010017 A1 WO 2012010017A1 CN 2011075524 W CN2011075524 W CN 2011075524W WO 2012010017 A1 WO2012010017 A1 WO 2012010017A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
node
source node
relay
group
Prior art date
Application number
PCT/CN2011/075524
Other languages
English (en)
Chinese (zh)
Inventor
梁枫
毕峰
吴栓栓
袁明
杨瑾
李国红
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012010017A1 publication Critical patent/WO2012010017A1/fr

Links

Classifications

    • 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
    • H04B7/0602—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 antenna switching
    • H04B7/0608—Antenna selection according to transmission parameters

Definitions

  • the present invention relates to the field of communications, and in particular to a method and system for implementing antenna selection in a multiple input multiple output (MIMO) relay system.
  • MIMO multiple input multiple output
  • the relay technology improves the transmission rate and transmission reliability of the wireless link by deploying several relays near the transmitting node and the receiving node, and can increase the coverage and robustness of the system.
  • the technology By making full use of the broadcast characteristics of the wireless channel, the technology not only reduces the power consumption and bandwidth of the terminal node, but also significantly improves the spectrum efficiency, throughput, and capacity of the system without increasing system complexity.
  • Relay technology has broad application prospects in wireless sensor network (WSN), wireless Ad Hoc network, wireless Mesh network, and cellular network, and will become the key technology for the integration of multiple heterogeneous networks in next-generation wireless communication systems.
  • WSN wireless sensor network
  • AF Amplification and Forwarding
  • DF Decoding and Forwarding
  • the relay node of the AF protocol does not need to be decoded, and only needs to amplify and forward the received signal.
  • the relay node of the DF protocol needs to decode and re-encode the received signal.
  • the relay node needs to perform cyclic redundancy check (CRC) on the data after decoding. If the verification is successful, the relay participates in the cooperative transmission, otherwise it does not participate.
  • CRC cyclic redundancy check
  • BF beamforming
  • CSI channel state information
  • the first thing is to require the receiving node to accurately estimate the CSI, and use the optimization algorithm to find The best transmitted signal vector. This will greatly increase the design complexity of the receiving node; in addition, since the BF technology requires the transmitting node to use all the antennas to simultaneously transmit signals, the transmitting node is required to have not only multiple antennas but also multiple RF links. The cost is too high. Summary of the invention
  • the main object of the present invention is to provide a method and system for implementing antenna selection in a MIMO relay system, which both ensure that a transmitting node selects only one antenna from multiple antennas to transmit signals, resulting in significantly less than conventional BF technology.
  • the amount of feedback information on the solution reduces design complexity.
  • a method for implementing antenna selection in a multiple input multiple output MIMO relay system comprising:
  • the relay node and the source node respectively use the notified transmit antenna for signal transmission.
  • the process of selecting a transmit antenna for the relay node includes:
  • the destination node measures channel quality of each antenna group or group of antennas of the relay node to the destination node, and selects an antenna or an antenna group of the relay node corresponding to the optimal channel quality, as the transmitting antenna selected by the relay node;
  • the process of selecting a transmit antenna for a source node includes:
  • Manner 1 The destination node obtains the equivalent channel quality of the antenna or antenna group of each or each group of antennas of the source node and the selected relay node, and selects the source node corresponding to the optimal equivalent channel quality.
  • Antenna or antenna group as the transmit antenna selected by the source node; or, mode 2: The destination node measures the channel quality of each or each group of antennas of the source node to the destination node, and selects the antenna of the source node corresponding to the optimal channel quality or Antenna group, a transmit antenna selected as a source node; or
  • the relay node measures the channel quality of each or each group of antennas of the source node to the relay node, The antenna or antenna group of the source node corresponding to the optimal channel quality is selected as the transmit antenna selected by the source node.
  • the process of selecting a transmit antenna for a relay node includes:
  • the second method includes: the source node sends antenna broadcasts from the first " 1 ⁇ ⁇ A ⁇ " groups/groups
  • X [X 1 , --, X ! , --X .
  • the relay node estimates the channel, and the destination node estimates the channel and the received SNR;
  • the method further includes: determining, according to the diversity gain order that can be obtained, the transmit antenna selection by the destination node or the relay node as the source node.
  • the diversity gain order when the destination node selects the transmit antenna as the source node, the diversity gain order can be obtained as ⁇ + ⁇ ; when the relay node selects the transmit antenna as the source node, the diversity gain order that can be obtained is N D + N R Ns , N D , .,
  • the process of determining the transmit antenna selection by the destination node or the relay node as the source node includes: If ⁇ NN ⁇ ( NN u, , , the destination node is the source node for transmitting antenna selection Otherwise, the transmit node is selected by the relay node for the source node.
  • the index of the selected transmitting antenna is specified.
  • a system for implementing antenna selection in a ⁇ relay system comprising a transmit antenna selection unit, a source node, and a destination node;
  • the transmitting antenna selecting unit is configured to select a transmitting antenna for the relay node and the source node according to the signal to noise ratio, and notify the selected relay antenna and the source node respectively to the selected transmitting antenna; the relay node and the source A node, configured to perform signal transmission using the notified transmit antenna, respectively.
  • the transmitting antenna selecting unit when selecting a transmitting antenna for the relay node, is configured to: measure channel quality of each antenna group or each group of antennas to the destination node, and select an optimal one.
  • the transmit antenna selection unit is used to:
  • Application mode 1 Obtain the equivalent channel quality of the antenna or antenna group of each or each group of antennas of the source node and the selected relay node, and select the antenna of the source node corresponding to the optimal equivalent channel quality. Or an antenna group, a transmit antenna selected as a source node;
  • the channel quality of each source group or groups of antennas of the source node is measured, and the antenna or antenna group of the source node corresponding to the optimal channel quality is selected as the transmit antenna selected by the source node;
  • Application mode 3 Measure the channel quality of each or each group of antennas from the source node to the relay node, and select the antenna or antenna group of the source node corresponding to the optimal channel quality as the transmit antenna selected by the source node.
  • the transmit antenna selection unit includes a relay node side antenna selection unit and a destination node side antenna selection unit;
  • the relay node side antenna selection unit is disposed in the relay node, configured to select a transmit antenna for the source node, and notify the corresponding source node of the selected transmit antenna;
  • the destination node side antenna selection unit is disposed in the destination node, configured to select a transmit antenna for the relay node and the source node, and notify the corresponding relay node and the source node respectively.
  • the transmit antenna selection unit is further configured to: determine, according to the diversity gain order that can be obtained, the transmit antenna selection by the relay node side antenna selection unit or the destination node side antenna selection unit as the source node.
  • the technology for implementing antenna selection in the MIMO relay system can ensure that the relay node and the source node as the transmitting node select only one antenna to transmit signals, which can generate feedback that is significantly less than the traditional BF technical solution.
  • the amount of information can effectively reduce the complexity of the design Degree.
  • FIG. 1 is a schematic diagram of a network model of a prior art MIMO relay system
  • FIG. 2 is a flowchart of selecting an antenna for a relay node according to an embodiment of the present invention
  • FIG. 3 is a flowchart of selecting an antenna for a source node according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of selecting an antenna for a source node according to still another embodiment of the present invention.
  • FIG. 5 is a flowchart of selecting an antenna for a source node according to still another embodiment of the present invention.
  • FIG. 6 is a schematic diagram of an antenna selection process of the present invention.
  • FIG. 7 is a diagram of an antenna selection system according to an embodiment of the present invention. detailed description
  • a transmit antenna selection operation based on limited feedback can be performed.
  • the source node and the relay node have two or more antennas or antenna groups, you can do the following:
  • the destination node performs a transmit antenna selection for the relay node, and indicates the selected transmit antenna index to the relay node; the destination node selects the transmit antenna for the source node, and indicates the selected transmit antenna index to the source node, or relays The node performs transmit antenna selection for the source node and indicates the selected transmit antenna index to the source node;
  • the relay node performs signal transmission using the transmit antenna indicated by the destination node, and the source node performs signal transmission using the destination antenna or the transmit antenna indicated by the relay node.
  • the destination node may measure the channel quality of each antenna group or group of antennas to the destination node, and select the relay corresponding to the optimal channel quality.
  • the antenna or antenna group of the node acts as the selected transmit antenna of the relay node and indicates to the relay node the index of the selected transmit antenna.
  • the destination node When the destination node is the source node for transmitting antenna selection, the destination node can obtain the source node. Selecting the equivalent channel quality of each or each group of antennas and the antenna or antenna group of the selected relay node for cooperative transmission, and selecting the antenna or antenna group of the source node corresponding to the optimal equivalent channel quality as the source node Selecting a transmit antenna and indicating to the source node an index of the selected transmit antenna.
  • the destination node may also measure channel quality of each or each group of antennas of the source node to the destination node, and select an antenna or an antenna group of the source node corresponding to the optimal channel quality as the selected transmit antenna of the source node, and A node indicates an index of the selected transmit antenna.
  • the relay node may measure channel quality of each antenna group or group of antennas of the source node to the relay node, and select an antenna or antenna of the source node corresponding to the optimal channel quality.
  • the group acts as a selected transmit antenna for the source node and indicates to the source node the index of the selected transmit antenna.
  • the relay node and the destination node may determine whether the destination node or the relay node is the source node for transmitting antenna selection according to the diversity gain order that can be obtained.
  • the diversity gain order that can be obtained is N S N D + N
  • the diversity gain order can be obtained when the relay node selects the transmit antenna for the source node. Number is
  • the transmit antenna selection unit can be performed by the transmit antenna selection unit.
  • the specific execution unit is the relay node side antenna selection unit or the destination node side antenna selection unit.
  • the channel quality or equivalent channel quality includes at least one of SNR, Signal to Interference and Noise Ratio (SINR), and Channel State Indication (CSI); the channel quality is optimal, which means that the SNR, SINR, or CSI value is the largest.
  • SINR Signal to Interference and Noise Ratio
  • CSI Channel State Indication
  • FIG. 2 is a flowchart of selecting an antenna for a relay node according to an embodiment of the present invention, where the process includes the following steps:
  • Step 202 The destination node estimates the received signal to noise ratio of the signal transmitted by the kth/group transmission antenna of the relay node.
  • Step 203 The destination node compares the signal to noise ratio with the decision threshold. Go to step 204; otherwise, go directly to step 205.
  • Step 204 Update the selected antenna identification ⁇ and SNR decision threshold? ⁇ , the specific operation is as follows:
  • Step 207 to step 208 Encoding ⁇ to obtain f', then modulating f' and feeding back the modulation result to the relay node.
  • the destination node estimates the received SNR.
  • FIG. 3 is a flowchart of selecting an antenna for a source node according to an embodiment of the present invention, where the process includes the following steps:
  • Step 302 The destination node combines the received signal from the ith/group antenna of the source node with the signal forwarded from the Kth/group antenna of the relay node.
  • Step 303 The destination node estimates the signal to noise ratio of the combined signal according to the result of the signal combination.
  • Step 304 The destination node compares the signal to noise ratio with the decision threshold, if yes, proceeds to step 304; otherwise, directly proceeds to step 305.
  • Step 304 Update the selected antenna identification I and the signal to noise ratio decision threshold? ⁇ , the specific operation is as follows:
  • Step 307 to step 308 Encoding is performed, the modulation is performed, and the modulation result is fed back to the source node.
  • the received signals can be expressed as y - T ⁇ pr y
  • the relay node uses the formula ⁇ hTM) yTM'' and ⁇ to maximize the ratio combining of the received signals.
  • the destination node calculates the MMSE combining coefficient using the formula w, where
  • the destination node selects the largest one from ..., and finds the corresponding antenna or antenna group identifier.
  • FIG. 4 is a flowchart of selecting an antenna for a source node according to still another embodiment of the present invention, where the process includes the following steps:
  • Step 402 The destination node estimates the signal to noise ratio of the transmitted signal from the ith/group antenna of the source node.
  • Step 403 The destination node compares the signal to noise ratio with the decision threshold. If > ⁇ , the process proceeds to step 404; otherwise, directly proceeds to step 405.
  • Step 404 Update the selected antenna identification I and the signal to noise ratio decision threshold? ⁇ , the specific operation is as follows:
  • Step 407 to step 408 Encoding / is performed to obtain g', modulating g' and feeding back the modulation result to the source node.
  • the relay node estimates the channel, and the destination node estimates the channel ⁇ ⁇ and the received SNR ⁇
  • the destination node selects the largest one from ,..., and finds the corresponding antenna or antenna group identifier.
  • the paired binary data g is CRC encoded to obtain g', then BPSK is modulated on g' and the modulation result is fed back to the source node.
  • FIG. 5 is a flowchart of selecting an antenna for a source node according to still another embodiment of the present invention, where the process includes the following steps:
  • Step 502 The relay node estimates the signal to noise ratio of the transmitted signal from the ith/group antenna of the source node.
  • Step 503 The relay node compares the signal to noise ratio with the decision threshold. If > ⁇ , the process proceeds to step 504; otherwise, directly proceeds to step 505.
  • Step 504 Update the selected antenna identifier I and the signal to noise ratio decision threshold? ⁇ , the specific operation is as follows: I 1 ' Tmwi - .
  • Step 507 Encoding / is performed to obtain g', and the modulation is performed and the modulation result is fed back to the source node.
  • the destination node estimates the channel
  • the relay node estimates the channel and the received SNR ⁇ .
  • the relay node selects the largest one from ..., and finds the corresponding antenna or antenna group identifier I.
  • the paired binary data g is CRC encoded to obtain g', then BPSK is modulated on g' and the modulation result is fed back to the source node.
  • FIG. 6 is a schematic diagram of an antenna selection process according to the present invention.
  • the process includes the following steps: Step 610: Select a transmit antenna for a relay node and a source node according to a signal to noise ratio, and notify the selected transmit antenna respectively.
  • Step 610 Select a transmit antenna for a relay node and a source node according to a signal to noise ratio, and notify the selected transmit antenna respectively.
  • Step 620 The relay node and the source node respectively use the notified transmit antenna to perform signal transmission.
  • the selected antenna can be applied for data transmission.
  • the destination node In the merge phase, the destination node combines the received signals with the estimated w, and the combined output is Second, the destination node pair performs demodulation to obtain received data.
  • FIG. 4 and FIG. 5 respectively show two source node antenna selection methods, and their implementation complexity is the same, but according to the configured number of antennas or antenna groups, the available diversity gain order may be It is different.
  • the diversity gain order obtained in Fig. 4 is ⁇ + ⁇
  • the diversity gain order obtainable in Fig. 5 is ⁇ + ⁇ 111 ⁇ , ⁇ ).
  • one of the above two source node antenna selection methods may be selected according to the number of antennas of the source node, the relay node, and the destination node.
  • the diversity gain order obtained in Fig. 4 is 3; and the diversity gain order obtained in Fig. 5 is 2, so it can be selected as shown in Fig. 4.
  • Method of operation In addition, the signal-to-noise ratio gain obtainable in Figure 4 is higher than that in Figure 5. Therefore, when the diversity gains of the above two source node antenna selection methods are the same, the operation method shown in FIG. 4 can be preferentially selected.
  • FIG. 7 is a diagram of an antenna selection system according to an embodiment of the present invention.
  • the system includes a transmit antenna selection unit, a source node, and a destination node.
  • the transmitting antenna selecting unit can select a transmitting antenna for the relay node and the source node according to the signal to noise ratio, and respectively notify the selected transmitting antenna and the source node to the corresponding transmitting antenna; the relay node and the source node can Signal transmission is performed using the notified transmit antennas, respectively.
  • the transmit antenna selection unit can be independently set or set in the relay node or the source node.
  • the transmit antenna selection unit may include a relay node side antenna selection unit and a destination node side antenna selection unit.
  • the relay node side antenna selection unit is disposed in the relay node, is capable of selecting a transmit antenna for the source node according to the signal to noise ratio, and notifying the selected source antenna to the corresponding source node; the destination node side antenna selection unit Set in the destination node, can be based on The signal-to-noise ratio selects the transmitting antenna for the relay node and the source node, and notifies the corresponding transmitting node and the source node respectively.
  • the data transmission units respectively disposed in the relay node and the source node can perform the aforementioned data transmission processing in accordance with the notified transmission antenna selection.
  • the source node may be a mobile phone as a user end, and the destination node may be a base station.
  • the operations that can be implemented by the above units are described in detail in the foregoing various processes, and are not described herein again.
  • the present invention implements antenna selection in a MIMO relay system, can ensure that the relay node and the source node as the transmitting node select only one antenna to transmit signals among multiple antennas. It can produce significantly less feedback information than the traditional BF technology solution, thus effectively reducing the design complexity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un système permettant de mettre en oeuvre une sélection d'antennes dans un système de relais MIMO (entrée multiple sortie multiple), des antennes de transmission destinées à un noeud de relais et à un noeud source pouvant être respectivement sélectionnées selon le rapport signal sur bruit ; le nœud de relais et le nœud source correspondants sont respectivement notifiés en ce qui concerne les antennes sélectionnées ; et les antennes de transmission notifiées sont utilisées respectivement par le nœud de relais et le nœud source pour transmettre le signal. Le procédé et le système selon la présente invention permettent tous deux d'assurer que le nœud de relais et le nœud source, qui agissent en tant que nœuds de transmission, ne sélectionnent qu'une seule antenne à partir d'antennes multiples pour transmettre le signal, et peuvent produire une quantité d'informations de retour beaucoup moins élevée que dans la solution de la technologie traditionnelle ; de cette manière, la complexité de la conception peut être diminuée de manière significative.
PCT/CN2011/075524 2010-07-21 2011-06-09 Procédé et système permettant de mettre en oeuvre une sélection d'antennes dans un système de relais entrée multiple sortie multiple WO2012010017A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2010102349057A CN102340340A (zh) 2010-07-21 2010-07-21 在mimo中继***中实现天线选择的方法和***
CN201010234905.7 2010-07-21

Publications (1)

Publication Number Publication Date
WO2012010017A1 true WO2012010017A1 (fr) 2012-01-26

Family

ID=45496495

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/075524 WO2012010017A1 (fr) 2010-07-21 2011-06-09 Procédé et système permettant de mettre en oeuvre une sélection d'antennes dans un système de relais entrée multiple sortie multiple

Country Status (2)

Country Link
CN (1) CN102340340A (fr)
WO (1) WO2012010017A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9942827B2 (en) 2015-03-20 2018-04-10 U-Media Communications, Inc. Dynamic crossband link method and wireless extender
US10405255B2 (en) 2015-03-20 2019-09-03 U-Media Communications, Inc. Dynamic crossband link method and wireless extender

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102780545B (zh) * 2012-06-06 2014-12-03 西安电子科技大学 放大转发分布式协作***发射天线选择方法
CN103763015B (zh) * 2014-02-10 2017-06-23 中国人民解放军理工大学 一种有直连链路的多天线中继网络中发送天线选择方法
CN104779987B (zh) * 2015-04-17 2018-12-18 北京邮电大学 一种大规模多输入多输出通信***的中继传输方法
CN106603141B (zh) * 2016-12-21 2020-01-10 北京邮电大学 一种面向全双工双向中继***的中继与天线联合选择方法
CN107592144B (zh) * 2017-08-29 2020-06-19 广西师范大学 Eh-mimo能量收集及多天线通信***的节点天线选择方法及装置
CN111989868B (zh) * 2020-07-14 2023-08-29 北京小米移动软件有限公司 信息传输方法、装置、通信设备和存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101217301A (zh) * 2008-01-10 2008-07-09 北京邮电大学 用协同中继节点在异构无线网络中实现协同传输的方法
WO2009099024A1 (fr) * 2008-02-05 2009-08-13 Sharp Kabushiki Kaisha Dispositif de communication mobile, dispositif de station de base, procédé de commande sans fil, et système de communication mobile
US20100323611A1 (en) * 2009-06-19 2010-12-23 Sharp Laboratories Of America, Inc. Systems and methods for coherent precoding with antenna selection for coordinated multipoint transmission
CN102137456A (zh) * 2010-01-22 2011-07-27 中兴通讯股份有限公司 多天线终端的切换接入方法及***

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2007037481A1 (ja) * 2005-09-30 2009-04-16 パナソニック株式会社 無線通信システム
US8064823B2 (en) * 2007-11-30 2011-11-22 Nokia Corporation Apparatus, method and computer program product for determining transmit weights in relay networks

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101217301A (zh) * 2008-01-10 2008-07-09 北京邮电大学 用协同中继节点在异构无线网络中实现协同传输的方法
WO2009099024A1 (fr) * 2008-02-05 2009-08-13 Sharp Kabushiki Kaisha Dispositif de communication mobile, dispositif de station de base, procédé de commande sans fil, et système de communication mobile
US20100323611A1 (en) * 2009-06-19 2010-12-23 Sharp Laboratories Of America, Inc. Systems and methods for coherent precoding with antenna selection for coordinated multipoint transmission
CN102137456A (zh) * 2010-01-22 2011-07-27 中兴通讯股份有限公司 多天线终端的切换接入方法及***

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9942827B2 (en) 2015-03-20 2018-04-10 U-Media Communications, Inc. Dynamic crossband link method and wireless extender
US10405255B2 (en) 2015-03-20 2019-09-03 U-Media Communications, Inc. Dynamic crossband link method and wireless extender

Also Published As

Publication number Publication date
CN102340340A (zh) 2012-02-01

Similar Documents

Publication Publication Date Title
WO2012010017A1 (fr) Procédé et système permettant de mettre en oeuvre une sélection d'antennes dans un système de relais entrée multiple sortie multiple
CN101505206B (zh) 联合模拟网络编码的中继方法、基站和用户设备
KR101228266B1 (ko) Ｍｉｍｏ 및 ｓｉｍｏ 무선 시스템 내에서 페이딩을감소시키는 방법 및 장치
KR100930524B1 (ko) 다중 안테나 중계 방식의 무선통신 시스템에서 협력 전송을수행하기 위한 장치 및 방법
CN101997593B (zh) 自适应中继方式择优选择方法和中继节点
WO2010043129A1 (fr) Procédé de commutation adaptif et système avec mode à entrées multiples et sorties multiples descendant
EP2487845B1 (fr) Procédé de coopération de routage à plusieurs bonds de réseau sans fil et son appareil de mise en oeuvre
CN105142199B (zh) 一种基于门限和最大化安全容量的中继选择方法
JP2004531945A (ja) 無線通信システム
CN101557630A (zh) 一种无线通信网络中协同节点选择方法
CN102769486B (zh) 双向多跳中继***中的中继端信号处理方法
CN104780025B (zh) 针对全双工协作通信***的空时交织卷积码编码方法
WO2009012615A1 (fr) Procédé de commande d'alimentation et station de base correspondante
CN110266435B (zh) 一种多中继场景下喷泉码协作通信方法
CN101640560B (zh) 波束权值的确定方法和装置
EP2710756A1 (fr) Traitement conjoint dans des réseaux de communication radio collaboratifs
KR101102084B1 (ko) 협력 중계 장치 및 협력 중계 방법과, 협력 중계 방식 기반의 무선 네트워크 시스템
WO2006114030A1 (fr) Procede permettant d’augmenter la capacite dans le sens montant d’un systeme a entrees multiples et a sorties multiples du type wcdma et son appareil
Zhang et al. Cooperative spatial multiplexing in multi-hop wireless networks
US20100246481A1 (en) System and method for selecting a number of spatial streams to be used for transmission based on probing of channels
CN102780545A (zh) 放大转发分布式协作***发射天线选择方法
CN105262573B (zh) 全双工双向中继网络的空时自编码方法
JP4435808B2 (ja) 無線通信システムにおける中継
CN104104423B (zh) Mimo中继通信节点间干扰的消除方法及***
CN103067057B (zh) 一种中继传输方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11809205

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11809205

Country of ref document: EP

Kind code of ref document: A1