Patent ID: 11889547
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A method implemented by a base station of a wireless communications system, wherein the method comprises:
receiving, on a second time domain resource, a random access preamble from a user equipment (UE) of the wireless communications system, wherein a round-trip delay (RTD) between the UE and the base station is greater than a duration of a single slot;
obtaining a second index value of the second time domain resource;
obtaining an index difference between a first time domain resource and the second time domain resource based on the RTD, wherein the first time domain resource is used by the UE to send the random access preamble to the base station;
obtaining a first index value of the first time domain resource by subtracting the index difference from the second index value;
obtaining a random access radio network temporary identifier (RA-RNTI) based on the first index value; and
scrambling a cyclic redundancy check (CRC) code of a random access response (RAR) using the RA-RNTI to obtain a scrambled RAR; and
sending the scrambled RAR to the UE.