WO2013097240A1 - Procédé et appareil de formation de faisceau dans un système radio cognitif - Google Patents

Procédé et appareil de formation de faisceau dans un système radio cognitif Download PDF

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Publication number
WO2013097240A1
WO2013097240A1 PCT/CN2011/085185 CN2011085185W WO2013097240A1 WO 2013097240 A1 WO2013097240 A1 WO 2013097240A1 CN 2011085185 W CN2011085185 W CN 2011085185W WO 2013097240 A1 WO2013097240 A1 WO 2013097240A1
Authority
WO
WIPO (PCT)
Prior art keywords
secondary users
base station
channel information
relay station
power
Prior art date
Application number
PCT/CN2011/085185
Other languages
English (en)
Inventor
Chaofeng LI
Ming Lei
Feifei Gao
Tianxiang LUAN
Original Assignee
Nec (China) Co., Ltd.
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 Nec (China) Co., Ltd. filed Critical Nec (China) Co., Ltd.
Priority to CN201180073526.7A priority Critical patent/CN103828453B/zh
Priority to PCT/CN2011/085185 priority patent/WO2013097240A1/fr
Publication of WO2013097240A1 publication Critical patent/WO2013097240A1/fr

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Classifications

    • 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
    • H04W16/14—Spectrum sharing arrangements between different networks
    • 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
    • H04W16/28—Cell structures using beam steering
    • 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
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations

Definitions

  • the apparatus 170 may be configured to implement functionalities as described with reference to the method according to the present invention. Therefore, the features discussed with respect to the method according to the present invention apply to the corresponding components in the apparatus 170. It is further noted that the apparatus 170 may be embodied in hardware, software, firmware, and/or any combination thereof. For example, the apparatus 170 may be implemented by using a circuit, a processor, or any other appropriate device implemented in hardware. Those skilled in the art will appreciate that the aforesaid examples are only for illustration not limitation.
  • the CR system may be the CR system 100 as illustrated in FIG. 1 , which comprises a BS, a RS, a primary user and a plurality of secondary users, and the BS and the RS serve the plurality of secondary users.
  • channel information on channels associated with the base station, the relay station, the secondary users and the primary user is obtained.
  • the channel information on channels associated with the base station, the relay station, the secondary users and the primary user may comprise the first information on a channel from the base station to the relay station, and on a set of channels from the relay station to the secondary users.
  • the channel information on channels associated with the base station, the relay station, the secondary users and the primary user may further comprises second channel information on a channel from the base station to the primary user, on a channel from the relay station to the primary user, and on a set of channels from the primary user to the secondary users.
  • the WSR may be calculated as follows.
  • v, 3 ⁇ 4H 2 ,,U r ⁇ ⁇ ⁇ ?0 5 ?> + U*H ⁇ U r A r TJ r + A J* G3 ⁇ 4 2) + t 3 ⁇ 4; 7 if indicates a d k x ⁇ 4 identity matrix;; W Sj ,
  • y;i indicate the optimal values for the test posterior probabilistic parameters and ⁇ * : during the updating; and Sp 2 ⁇ denote the primary signals during the two CR transmission stages.
  • ⁇ f k may be updated as follows (where vec() denotes a vector formed by stacking columns of a matrix): (7) where
  • the iteration ends up in response to the plurality of candidate sums converge, the and the A r which correspond to the candidate sum obtained in the last iteration may be taken as the BS precoding matrices and the RS precoding matrix.
  • the iteration ends up after being perfomied for predetennined times, the ⁇ F fc ⁇ and the A r w h cn correspond to the finally obtained sum of transmitting powers at the base station and the relay station may be taken as the BS precoding matrices and the RS precoding matrix.
  • the apparatus 700 may comprise: an obtainer 710 configured to obtain channel information on channels associated with the base station, the relay station, the secondary users and the primary user; and a determiner 720 configured to determine, based on the channel information, BS precoding matrices for transmission from the base station to the plurality of secondary users and a RS precoding matrix for transmission from the relay station to the plurality of secondary users.

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

Abstract

Selon des modes de réalisation, la présente invention concerne un système radio cognitif et un procédé et un appareil de formation de faisceau dans le système radio cognitif. Selon l'invention, le système radio cognitif peut comprendre une station de base, une station relais, un utilisateur principal et plusieurs utilisateurs secondaires, la station de base et la station relais desservant les plusieurs utilisateurs secondaires ; et un appareil de formation de faisceau dans le système radio cognitif. L'appareil peut comprendre : une unité d'acquisition conçue pour obtenir des informations de canaux concernant des canaux associés à la station de base, à la station relais, aux utilisateurs secondaires et à l'utilisateur principal ; et une unité de détermination conçue pour déterminer, sur la base des informations de canaux, des matrices de précodage BS de transmission de la station de base aux plusieurs utilisateurs secondaires et une matrice de précodage RS de transmission de la station relais aux plusieurs utilisateurs secondaires. L'appareil, le procédé et le système de la présente invention peuvent réaliser une formation de faisceau de transmission CR tout en améliorant la performance du système radio cognitif.
PCT/CN2011/085185 2011-12-31 2011-12-31 Procédé et appareil de formation de faisceau dans un système radio cognitif WO2013097240A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201180073526.7A CN103828453B (zh) 2011-12-31 2011-12-31 用于在认知无线电系统中波束成形的方法和装置
PCT/CN2011/085185 WO2013097240A1 (fr) 2011-12-31 2011-12-31 Procédé et appareil de formation de faisceau dans un système radio cognitif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/085185 WO2013097240A1 (fr) 2011-12-31 2011-12-31 Procédé et appareil de formation de faisceau dans un système radio cognitif

Publications (1)

Publication Number Publication Date
WO2013097240A1 true WO2013097240A1 (fr) 2013-07-04

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Application Number Title Priority Date Filing Date
PCT/CN2011/085185 WO2013097240A1 (fr) 2011-12-31 2011-12-31 Procédé et appareil de formation de faisceau dans un système radio cognitif

Country Status (2)

Country Link
CN (1) CN103828453B (fr)
WO (1) WO2013097240A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
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CN105162548A (zh) * 2015-07-21 2015-12-16 北京邮电大学 认知无线网络中的编码、译码方法及装置
CN105721028A (zh) * 2016-04-18 2016-06-29 东南大学 Vlc mu-miso系统下行波束成型方法、装置及vlc mu-miso系统
CN108650008A (zh) * 2018-05-17 2018-10-12 北京邮电大学 基于认知网络的通信方法和设备

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CN101785211A (zh) * 2007-08-29 2010-07-21 上海贝尔股份有限公司 用于分布式预编码的方法及装置
CN101895991A (zh) * 2010-07-06 2010-11-24 北京邮电大学 基于中继协作传输的认知无线电系统及其资源分配方法
CN102083078A (zh) * 2010-12-27 2011-06-01 中国人民解放军理工大学 一种认知无线电系统次级用户上行链路协同传输方法

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US7778598B2 (en) * 2007-01-22 2010-08-17 Mitsubishi Electric Research Laboratories, Inc. Asymmetric cooperation in downlink cellular networks with relay stations
CN101662321B (zh) * 2008-08-25 2013-05-01 上海无线通信研究中心 认知无线mimo系统中基于零子空间技术的次级预编码发送方法
CN101702703A (zh) * 2009-11-25 2010-05-05 南京邮电大学 基于多载波调制技术的范德蒙德频分复用方法
CN101925070B (zh) * 2010-07-19 2012-11-28 西安交通大学 一种基于空间复用的认知系统资源分配方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101785211A (zh) * 2007-08-29 2010-07-21 上海贝尔股份有限公司 用于分布式预编码的方法及装置
CN101895991A (zh) * 2010-07-06 2010-11-24 北京邮电大学 基于中继协作传输的认知无线电系统及其资源分配方法
CN102083078A (zh) * 2010-12-27 2011-06-01 中国人民解放军理工大学 一种认知无线电系统次级用户上行链路协同传输方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105162548A (zh) * 2015-07-21 2015-12-16 北京邮电大学 认知无线网络中的编码、译码方法及装置
CN105162548B (zh) * 2015-07-21 2018-09-28 北京邮电大学 认知无线网络中的编码、译码方法及装置
CN105721028A (zh) * 2016-04-18 2016-06-29 东南大学 Vlc mu-miso系统下行波束成型方法、装置及vlc mu-miso系统
CN105721028B (zh) * 2016-04-18 2018-08-21 东南大学 Vlc mu-miso系统下行波束成型方法、装置及vlc mu-miso系统
CN108650008A (zh) * 2018-05-17 2018-10-12 北京邮电大学 基于认知网络的通信方法和设备

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Publication number Publication date
CN103828453B (zh) 2017-11-10
CN103828453A (zh) 2014-05-28

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