公开(公告)号：US20240098838A1

公开(公告)日：2024-03-21

申请号：US17933915

申请日：2022-09-21

Applicant: APPLE INC.

Inventor： Lijie Zhang ,  Lele Cui ,  Xiaolong Tu ,  Dongzhou Yang ,  Tao Tao ,  Lei Zhou ,  Zihuan Xu

IPC: H04W76/28

CPC classification number: H04W76/28 ,  H04L1/0061

Abstract: Systems and methods related to “on/off” determinations regarding the performance of physical downlink control channel (PDCCH) monitoring during connected mode discontinuous reception (CDRX) on duration windows are disclosed herein. In some cases, a radio access network (RAN) predicts whether a downlink (DL) packet for a UE will arrive at a buffer of the RAN prior to an end of a CDRX on duration window of the UE, and sends a downlink control information (DCI) with a cyclic redundancy check (CRC) scrambled by a power-saving radio network temporary identifier (PS-RNTI) (DCP) for the CDRX on duration window indicating whether or not the UE should perform PDCCH monitoring during the CDRX on duration window based on the prediction. In some cases, a UE determines a current state of DL traffic and adaptively uses DCP monitoring based on the current state of the traffic. Aggregation level adaptation by the RAN is also discussed.

公开(公告)号：US20240098639A1

公开(公告)日：2024-03-21

申请号：US17933923

申请日：2022-09-21

Applicant: APPLE INC.

Inventor： Lijie Zhang ,  Lele Cui ,  Xiaolong Tu ,  Dongzhou Yang ,  Tao Tao ,  Lei Zhou ,  Zihuan Xu

IPC: H04W52/02 ,  H04L1/00 ,  H04W76/28

CPC classification number: H04W52/0232 ,  H04L1/0061 ,  H04W76/28

Abstract: Systems and methods related to “on/off” determinations regarding the performance of physical downlink control channel (PDCCH) monitoring during connected mode discontinuous reception (CDRX) on duration windows are disclosed herein. In some cases, a radio access network (RAN) predicts whether a downlink (DL) packet for a UE will arrive at a buffer of the RAN prior to an end of a CDRX on duration window of the UE, and sends a downlink control information (DCI) with a cyclic redundancy check (CRC) scrambled by a power-saving radio network temporary identifier (PS-RNTI) (DCP) for the CDRX on duration window indicating whether or not the UE should perform PDCCH monitoring during the CDRX on duration window based on the prediction. In some cases, a UE determines a current state of DL traffic and adaptively uses DCP monitoring based on the current state of the traffic. Aggregation level adaptation by the RAN is also discussed.

公开(公告)号：US12238808B2

公开(公告)日：2025-02-25

申请号：US17933915

申请日：2022-09-21

Applicant: APPLE INC.

Inventor： Lijie Zhang ,  Lele Cui ,  Xiaolong Tu ,  Dongzhou Yang ,  Tao Tao ,  Lei Zhou ,  Zihuan Xu

IPC: H04W76/28 ,  H04L1/00

Abstract: Systems and methods related to “on/off” determinations regarding the performance of physical downlink control channel (PDCCH) monitoring during connected mode discontinuous reception (CDRX) on duration windows are disclosed herein. In some cases, a radio access network (RAN) predicts whether a downlink (DL) packet for a UE will arrive at a buffer of the RAN prior to an end of a CDRX on duration window of the UE, and sends a downlink control information (DCI) with a cyclic redundancy check (CRC) scrambled by a power-saving radio network temporary identifier (PS-RNTI) (DCP) for the CDRX on duration window indicating whether or not the UE should perform PDCCH monitoring during the CDRX on duration window based on the prediction. In some cases, a UE determines a current state of DL traffic and adaptively uses DCP monitoring based on the current state of the traffic. Aggregation level adaptation by the RAN is also discussed.