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Method and apparatus for multi-transmission/reception point power headroom reporting in a wireless communication system

專(zhuān)利號(hào)
US12133181B2
公開(kāi)日期
2024-10-29
申請(qǐng)人
ASUSTek Computer Inc.（TW Taipei）
發(fā)明人
Yi-Hsuan Kung; Yu-Hsuan Guo; Chun-Wei Huang
IPC分類(lèi)
H04W52/36; H04L5/00; H04W72/23
技術(shù)領(lǐng)域
pusch,trp,phr,ue,ph,mac,ce,cell,ul,or
地域： Taipei

摘要

A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE receives an uplink (UL) grant. The UL grant is indicative of a first Physical Uplink Shared Channel (PUSCH) transmission on a first Transmission/Reception Point (TRP) of a first cell. The UL grant is not indicative of a PUSCH transmission on a second TRP of the first cell. The UE transmits a Power Headroom Reporting (PHR) Medium Access Control (MAC) Control Element (CE). Based on the UL grant, the PHR MAC CE is indicative of a first power headroom (PH), associated with the first TRP, based on a real PUSCH transmission, and is indicative of a second PH, associated with the second TRP, based on a reference PUSCH transmission.

說(shuō)明書(shū)

If the UE determines that a Type 1 power headroom report for an activated serving cell is based on a reference PUSCH transmission then, for PUSCH transmission occasion i on active UL BWP b of carrier f of serving cell c, the UE computes the Type 1 power headroom report as
PHtype1,b,f,c(i,j,qd,l)={tilde over (P)}CMAX,f,c(i)?{PO_PUSCH,b,f,c(j)+αb,f,c(j)·PLb,f,c(qd)+fb,f,c(i,l)}??[dB]
where {tilde over (P)}CMAX,f,c (i) is computed assuming MPR=0 dB, A-MPR=0 dB, P-MPR=0 dB. ΔTC=0 dB. MPR, A-MPR, P-MPR and ΔTC are defined in [8-1, TS 38.101-1], [8-2, TS38.101-2] and [8-3, TS 38.101-3]. The remaining parameters are defined in Clause 7.1.1 where PO_PUSCH,b,f,c (j) and αb,f,c(j) are obtained using PO_NOMINAL_PUSCH,f,c(0) and p0-PUSCH-AlphaSetId=0, PLb,f,c (qd) is obtained using pusch-PathlossReferenceRS-Id=0, and 1=0.

In RAN1 #103-e meeting, agreements and working assumptions have been made regarding multi-Transmission/Reception Point (TRP) Physical Uplink Shared Channel (PUSCH) enhancements. At least some of the agreements and/or working assumptions are quoted below from 3GPP RAN1 #103-e chairman's Notes:

Agreement

For single DCI based M-TRP PUSCH repetition schemes, support codebook based PUSCH transmission with following enhancements.

    • Support the indication of two SRIs.
      • Alt1: Bit field of SRI shall be enhanced.

權(quán)利要求

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