公开(公告)号：US11985709B2

公开(公告)日：2024-05-14

申请号：US17682509

申请日：2022-02-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hongyi Zhao ,  Jinfang Zhang ,  Lei Lu

IPC: H04W74/0833 ,  H04L5/00 ,  H04L27/26 ,  H04W72/044

CPC classification number: H04W74/0833 ,  H04L5/0048 ,  H04L5/0051 ,  H04L27/2602 ,  H04W72/044

Abstract: A random access method includes determining, by a user equipment (UE), a preamble sequence. The method also includes generating, by the UE, a scrambling code. The scrambling code is based on the preamble sequence. The method further includes scrambling, by the UE, data based on the scrambling code to obtain scrambled data. The method additionally includes determining, by the UE based on a predetermined resource mapping relationship, time-frequency resources for sending the scrambled data. The method also includes sending, by the UE on the determined time-frequency resources, the scrambled data to a base station.

公开(公告)号：US11284442B2

公开(公告)日：2022-03-22

申请号：US16576785

申请日：2019-09-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hongyi Zhao ,  Jinfang Zhang ,  Lei Lu

IPC: H04W74/08 ,  H04W72/04

Abstract: A random access method, user equipment (UE), a base station, and a random access system, are provided to address relatively long service delay. In various embodiments, after downlink synchronization with a cell is obtained, UE can determine a preamble sequence of the UE in the cell, where the UE has not obtained uplink synchronization with the cell. The UE can then obtain service data and generate a scrambling code, and scramble the service data based on the scrambling code to obtain scrambled service data. The UE can then configure, based on a predetermined resource mapping relationship, time-frequency resources respectively occupied by the preamble sequence and the scrambled service data. The UE then sends on the configured time-frequency resources, the preamble sequence and the scrambled service data to a base station the cell belongs to and receives random access response sent by the base station based on the preamble sequence.