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    Resource allocation method for MIMO-OFDM of multi-user access systems
    1.
    发明授权
    Resource allocation method for MIMO-OFDM of multi-user access systems 有权
    用于MIMO-OFDM的多用户接入系统的资源分配方法

    公开(公告)号：EP1929691B1

    公开(公告)日：2012-03-14

    申请号：EP05792221.3

    申请日：2005-09-30

    申请人： Huawei Technologies Co., Ltd.

    发明人： JIANG, Peigang ,  WENNSTROM, Mattias

    IPC分类号： H04B7/04

    CPC分类号： H04B7/0413 ,  H04B7/0439 ,  H04L5/023 ,  H04L27/2608

    摘要： A resource allocation method for MIMO (multi-input multi-output -OFDM (orthogonal frequency-division multiplex) of multi-user access systems, wherein the method comprises, A) for each sub-carrier or group of sub-carriers of OFDM, grouping signature vectors of users at a time period according to correlations of the signature vectors; B) from the grouping results, selecting the signature vectors according to a scheduling rule; assigning the sub-carrier frequency and time resource to certain users of which simultaneously the selected signature vectors have low correlations; and assigning spatial resource to the certain users corresponding to the selected signature vectors. By minimizing the spatial co-channel interference to an acceptable low level, the complexity significantly in the joint multi-user optimization is reduced.

    RESOURCE ALLOCATION METHOD FOR MIMO-OFDM OF MULTI-USER ACCESS SYSTEMS
    2.
    发明公开
    RESOURCE ALLOCATION METHOD FOR MIMO-OFDM OF MULTI-USER ACCESS SYSTEMS 有权
    用于MIMO-OFDM的多用户接入系统的资源分配方法

    公开(公告)号：EP1929691A1

    公开(公告)日：2008-06-11

    申请号：EP05792221.3

    申请日：2005-09-30

    申请人： Huawei Technologies Co., Ltd.

    发明人： JIANG, Peigang ,  WENNSTROM, Mattias

    IPC分类号： H04L1/06

    CPC分类号： H04B7/0413 ,  H04B7/0439 ,  H04L5/023 ,  H04L27/2608

    摘要： A resource allocation method for MIMO (multi-input multi-output -OFDM (orthogonal frequency-division multiplex) of multi-user access systems, wherein the method comprises, A) for each sub-carrier or group of sub-carriers of OFDM, grouping signature vectors of users at a time period according to correlations of the signature vectors; B) from the grouping results, selecting the signature vectors according to a scheduling rule; assigning the sub-carrier frequency and time resource to certain users of which simultaneously the selected signature vectors have low correlations; and assigning spatial resource to the certain users corresponding to the selected signature vectors. By minimizing the spatial co-channel interference to an acceptable low level, the complexity significantly in the joint multi-user optimization is reduced.

    METHOD FOR COMMUNICATING CHANNEL STATE INFORMATION
    4.
    发明公开
    METHOD FOR COMMUNICATING CHANNEL STATE INFORMATION 有权
    沟通信道状态​​信息的方法

    公开(公告)号：EP2193610A1

    公开(公告)日：2010-06-09

    申请号：EP07817025.5

    申请日：2007-09-29

    申请人： Huawei Technologies Co., Ltd.

    发明人： VAN DE BEEK, Jaap ,  WENNSTROM, Mattias ,  OLOFSSON, Henrik

    IPC分类号： H04B7/02

    CPC分类号： H04W72/1284 ,  H04B17/24 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/0028 ,  H04W72/1231

    摘要： A method, a communication system and a user entity for communicating channel state information in a communication system are provided. The system includes at least one radio transmitter for providing a communication link to at least one user entity, when in the coverage area of the radio transmitter, wherein the communication system includes a first communication resource for transmitting channel state information to the radio transmitter from the user entity, and a second communication resource for transmitting additional channel state information to the radio transmitter from the user entity. An indication indicating whether the user entity has additional channel state information to be communicated on the second communication resource from the user entity is transmitted in a first message on the first communication resource.

    摘要翻译： 提供了用于在通信系统中传送信道状态信息的方法，通信系统和用户实体。 该系统包括至少一个无线电发射机，用于当处于无线电发射机的覆盖区域中时提供到至少一个用户实体的通信链路，其中该通信系统包括用于从该无线电发射机向无线电发射机发射信道状态信息的第一通信资源 用户实体和用于从用户实体向无线电发射机发送附加信道状态信息的第二通信资源。 指示用户实体是否具有要在第二通信资源上从用户实体传送的附加信道状态信息的指示在第一通信资源上的第一消息中传送。

    METHOD FOR REDUCING FEEDBACK INFORMATION OVERHEAD IN PRECODED MIMO-OFDM SYSTEMS
    6.
    发明公开
    METHOD FOR REDUCING FEEDBACK INFORMATION OVERHEAD IN PRECODED MIMO-OFDM SYSTEMS 有权
    用于减少预先编码的MIMO-OFDM系统中的反馈信息开销的方法

    公开(公告)号：EP2033335A1

    公开(公告)日：2009-03-11

    申请号：EP06742199.0

    申请日：2006-06-20

    申请人： Huawei Technologies Co., Ltd.

    发明人： WENNSTROM, Mattias ,  BEEK, Jaap van de

    IPC分类号： H04B7/06

    CPC分类号： H04B7/066 ,  H04B7/0634 ,  H04B7/0639 ,  H04L5/0023 ,  H04L5/0091 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

    摘要： An improved method for reducing an amount of precoding feedback information in a multi-carrier MIMO (Multiple Input Multiple Output) communication system using precoding is disclosed. At the receiving end, the method jointly selects, while considering transmission quality for each relevant combination of sub-bands and matrices, a limited number of P codebook indices to be included in a vector Π and a limited number of K' sub-bands to be included in a subset ω (m 1,…, m K') of a set Ω of allowed sub-bands. K' is here set to a value K'

    摘要翻译： 公开了一种用于在使用预编码的多载波MIMO（多输入多输出）通信系统中减少预编码反馈信息量的改进方法。 在接收端，当考虑子带和矩阵的每个相关组合的传输质量时，该方法联合选择要包括在向量Π和有限数量的K'个子带中的有限数量的P码本索引， 被包括在集合ω的一个子集ω（m 1，mldr，m K'）中。 允许的子带。 K'在这里被设置为值K'

    METHOD IN A WIRELESS COMMUNICATION SYSTEM
    10.
    发明公开
    METHOD IN A WIRELESS COMMUNICATION SYSTEM 有权
    方法在无线通信系统

    公开(公告)号：EP2338240A1

    公开(公告)日：2011-06-29

    申请号：EP08877929.3

    申请日：2008-11-04

    申请人： Huawei Technologies Co., Ltd.

    发明人： WENNSTROM, Mattias ,  LIU, Jianghua ,  POPOVIC, Branislav

    IPC分类号： H04B7/26

    CPC分类号： H04W72/04 ,  H04L1/06 ,  H04L1/1607 ,  H04L1/1861 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0091 ,  H04L25/0226

    摘要： A method in a Central Node (CN), a method in a Remote Node (CN), and a method in a wireless communication system for allocating reference signals are to be used for uplink transmission. According to one aspect of the invention reference signals are allocated with a method comprising the steps of: determining in a CN a number of reference signals N to be used for uplink transmission by a Remote Node RN; indicating to the RN the number of reference signals N to be used for uplink transmission by the RN; configuring an uplink transmission by the RN with at most the number of reference signals N; and performing by the RN the uplink transmission with at most the number of reference signals N on transmit antennas comprised in the RN. A CN and a RN relating to the methods are provided.