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Sounding reference signals with collisions in asymmetric carrier aggregation

專利號(hào)
US11159289B2
公開日期
2021-10-26
申請(qǐng)人
QUALCOMM Incorporated（US CA San Diego）
發(fā)明人
Alberto Rico Alvarino; Wanshi Chen; Peter Gaal; Jing Sun; Hao Xu; Srinivas Yerramalli
IPC分類
H04L5/00; H04L5/14; H04W72/04; H04W56/00
技術(shù)領(lǐng)域
srs,ue,uplink,cc,downlink,may,ccs,enb,subframe,in
地域： CA CA San Diego

摘要

An apparatus may use inactive uplink portions of a downlink CC to transmit SRS to an eNB. At times there may be a collision between the SRS transmission and uplink transmissions or downlink transmissions on another CC. The apparatus receives a carrier aggregation configuration for a first downlink CC and a second CC, determines to transmit an uplink transmission on the second CC or to receive a downlink transmission on the second CC, determines that the SRS would at least partially collide with the uplink transmission or the downlink transmission, and determines to adjust at least one of the uplink transmission, the SRS transmission, or reception of the downlink transmission based on the determination of the collision and an interruption time to transmit the SRS in the uplink portion of the first CC.

說(shuō)明書

A set of switching times may be defined in a specification, e.g., according to UE capability and/or bands/channels involved in the switching. The UE may then apply a switching time based on UE capability signaling and the CCs that will be involved in the switching.

Determining Among Component Carriers to Interrupt

The UE may be capable of transmitting or receiving using multiple CCs. For example, a UE may be capable of uplink transmissions on two CCs at the same time. FIG. 7B illustrates an example where the UE is configured for uplink transmissions on both CC1 and CC3. The UE may be capable of simultaneously transmitting on multiple CCs. For example, the UE may be capable of simultaneously transmitting on two CCs. In this example, when an SRS on CC2 would collide with at least part of uplink transmissions on both CC1 and CC3, the UE may need to determine which CC to interrupt in order to transmit the SRS on CC2. The UE may make this selection in any of a number of ways.

權(quán)利要求

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