UPLINK SOUNDING REFERENCE SIGNALS CONFIGURATION AND TRANSMISSION

    公开(公告)号:US20170353931A1

    公开(公告)日:2017-12-07

    申请号:US15684407

    申请日:2017-08-23

    IPC分类号: H04W52/32 H04L27/26 H04L5/00

    摘要: A method and apparatus for uplink sounding reference signals (SRS) transmissions are disclosed. A WTRU-specific configuration of WTRU-specific SRS subframes for performing SRS transmissions is received. A trigger is received in a subframe from a base station to transmit a first SRS. A first subframe is selected after the subframe in which the trigger is received which is both a WTRU-specific subframe and at least four subframes after the subframe in which the trigger is received. A determination if a maximum power is exceeded in a symbol in the selected first subframe is made. On a condition that the maximum power is not exceeded in the symbol in the selected first subframe, the first SRS is transmitted in the selected first subframe. On a condition that the maximum power is exceeded in the symbol in the selected first subframe and transmission of at least one channel type other than SRS-type at least partially overlaps in the symbol in the selected first subframe, the first SRS is dropped from the selected first subframe and the at least one channel type other than SRS-type is transmitted. On a condition that the maximum power is exceeded in the symbol in the selected first subframe and transmission of at least one other SRS at least partially overlaps in the symbol in the selected first subframe, transmission powers of the first SRS and the at least one other SRS are scaled equally to comply with the maximum power, and the first SRS is transmitted in the selected first subframe in accordance with the scaled transmission powers, and the at least one other SRS is transmitted in accordance with the scaled transmission powers.

    Control signaling in LTE carrier aggregation
    10.
    发明授权
    Control signaling in LTE carrier aggregation 有权
    LTE载波聚合中的控制信令

    公开(公告)号:US09363797B2

    公开(公告)日:2016-06-07

    申请号:US13726093

    申请日:2012-12-22

    IPC分类号: H04W72/04 H04L5/00

    摘要: Methods and devices may be provided for aggregating component carriers in the licensed spectrum with at least one component carriers in the licensed exempt spectrum. Control information may be processed in a wireless transmit/receive unit (WTRU) while receiving and sending information on a primary component carrier (PCC) and a supplementary component carrier (SuppCC). A PCC subframe with a control portion and a data portion may be received. Resource assignment information associated with a downlink shared channel on the PCC may be embedded in the control portion of the subframe. Based on the resource assignment information on the PCC, resource assignment information associated with a downlink shared channel on the SuppCC may be identified in the data portion of the PCC subframe. A SuppCC subframe of the shared channel on the SuppCC may be processed as per the identified resource assignment information associated with the downlink shared channel on the SuppCC.

    摘要翻译: 可以提供方法和设备,用于将许可频谱中的分量载波与授权豁免频谱中的至少一个分量载波进行聚合。 控制信息可以在无线发射/接收单元(WTRU)中处理,同时在主分量载波(PCC)和辅助分量载波(SuppCC)上接收和发送信息。 可以接收具有控制部分和数据部分的PCC子帧。 与PCC上的下行链路共享信道相关联的资源分配信息可以嵌入在子帧的控制部分中。 基于PCC上的资源分配信息,可以在PCC子帧的数据部分中识别与SuppCC上的下行链路共享信道相关联的资源分配信息。 可以根据在SuppCC上与下行链路共享信道相关联的所识别的资源分配信息来处理SuppCC上的共享信道的SuppCC子帧。