公开(公告)号：US09967871B2

公开(公告)日：2018-05-08

申请号：US15398661

申请日：2017-01-04

Applicant: Huawei Device Co., Ltd.

Inventor： Yingyang Li ,  Chi Gao

IPC: H04W72/04 ,  H04L27/26 ,  H04L5/06 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/06 ,  H04L27/2601 ,  H04W28/065 ,  H04W72/04 ,  H04W72/0453

Abstract: The application pertains to a method for communicating downlink control information. A base station maps an enhanced physical downlink control channel (E-PDCCH) sequentially to resource elements for transmitting the E-PDCCH in each orthogonal frequency division multiplexing (OFDM) symbol according to an order of OFDM symbols used by the E-PDCCH of a user equipment (UE). The E-PDCCH is sent to the UE from the base station by using the resource elements, where the E-PDCCH and a physical downlink shared channel (PDSCH) invoked by the E-PDCCH are frequency-division multiplexed. Because the E-PDCCH is mapped sequentially to resource elements for transmitting the E-PDCCH in each OFDM symbol according to an order of OFDM symbols used by the E-PDCCH of the UE, different control channel elements of E-PDCCHs at different aggregation levels will not include a same E-PDCCH modulation symbol, thereby ensuring that the UE judges a start position of the E-PDCCH correctly.

公开(公告)号：US10462778B2

公开(公告)日：2019-10-29

申请号：US15942565

申请日：2018-04-01

Applicant: Huawei Device Co., Ltd.

Inventor： Yingyang Li ,  Chi Gao

IPC: H04W72/04 ,  H04L5/00 ,  H04L5/06 ,  H04L27/26 ,  H04W28/06

Abstract: The application pertains to a method for communicating a downlink control signal. A base station maps a physical downlink control channel (PDCCH) sequentially to resource elements for transmitting the PDCCH in each orthogonal frequency division multiplexing (OFDM) symbol according to an order of OFDM symbols used by the PDCCH of a user equipment (UE). The PDCCH is sent to the UE from the base station by using the resource elements. Because the PDCCH is mapped sequentially to resource elements for transmitting the PDCCH in each OFDM symbol according to an order of OFDM symbols used by the PDCCH of the UE, different control channel elements of PDCCHs at different aggregation levels will not include a same PDCCH modulation symbol, thereby ensuring that the UE judges a start position of the PDCCH correctly.

公开(公告)号：US20180227892A1

公开(公告)日：2018-08-09

申请号：US15942565

申请日：2018-04-01

Applicant: Huawei Device Co., Ltd.

Inventor： Yingyang Li ,  Chi Gao

IPC: H04W72/04 ,  H04L5/00 ,  H04L5/06 ,  H04L27/26

CPC classification number: H04W72/042 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/06 ,  H04L27/2601 ,  H04W28/065 ,  H04W72/04 ,  H04W72/0453

Abstract: The application pertains to a method for communicating a downlink control signal. A base station maps a physical downlink control channel (PDCCH) sequentially to resource elements for transmitting the PDCCH in each orthogonal frequency division multiplexing (OFDM) symbol according to an order of OFDM symbols used by the PDCCH of a user equipment (UE). The PDCCH is sent to the UE from the base station by using the resource elements. Because the PDCCH is mapped sequentially to resource elements for transmitting the PDCCH in each OFDM symbol according to an order of OFDM symbols used by the PDCCH of the UE, different control channel elements of PDCCHs at different aggregation levels will not include a same PDCCH modulation symbol, thereby ensuring that the UE judges a start position of the PDCCH correctly.

公开(公告)号：US20170181138A1

公开(公告)日：2017-06-22

申请号：US15398661

申请日：2017-01-04

Applicant: Huawei Device Co., Ltd.

Inventor： Yingyang Li ,  Chi Gao

IPC: H04W72/04 ,  H04L5/06 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04W72/042 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/06 ,  H04L27/2601 ,  H04W28/065 ,  H04W72/04 ,  H04W72/0453

Abstract: The application pertains to a method for communicating downlink control information. A base station maps an enhanced physical downlink control channel (E-PDCCH) sequentially to resource elements for transmitting the E-PDCCH in each orthogonal frequency division multiplexing (OFDM) symbol according to an order of OFDM symbols used by the E-PDCCH of a user equipment (UE). The E-PDCCH is sent to the UE from the base station by using the resource elements, where the E-PDCCH and a physical downlink shared channel (PDSCH) invoked by the E-PDCCH are frequency-division multiplexed. Because the E-PDCCH is mapped sequentially to resource elements for transmitting the E-PDCCH in each OFDM symbol according to an order of OFDM symbols used by the E-PDCCH of the UE, different control channel elements of E-PDCCHs at different aggregation levels will not include a same E-PDCCH modulation symbol, thereby ensuring that the UE judges a start position of the E-PDCCH correctly.