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

Claim 18:
19. An apparatus comprising:
a non-transitory memory configured to store instructions; and
a processor coupled to the non-transitory memory, wherein the instructions cause the processor to be configured to:
receive, on a second time domain resource, a random access preamble from a user equipment (UE), wherein a round-trip delay (RTD) between the UE and the apparatus is greater than a duration of a single slot;
obtain a second index value of the second time domain resource;
obtain 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 apparatus;
obtain a first index value of the first time domain resource by subtracting the index difference from the second index value;
obtain a random access radio network temporary identifier (RA-RNTI) based on the first index value;
scramble a cyclic redundancy check (CRC) code of a random access response (RAR) using the RA-RNTI to obtain a scrambled RAR; and
send the scrambled RAR to the UE.