Patent ID: 11882604
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A communications device, comprising:
a communications apparatus configured to communicate with a satellite; and
at least one processor coupled to the communications apparatus, and configured to:
obtain a round-trip transmission latency (tRTD) of a signal between the communications apparatus and the satellite, and
obtain a random access parameter based on the round-trip transmission latency, wherein the random access parameter comprises at least one of tX, tY, tbackoff, or tsubframe, wherein
tX represents a duration between a moment at which the communications apparatus sends a random access preamble to the satellite and a moment at which the communications apparatus starts to receive a random access response (RAR) from the satellite,
tY represents a duration of a window in which the communications apparatus receives the RAR,
tbackoff represents a duration between a moment at which the communications apparatus stops receiving the RAR and a moment at which the communications apparatus sends the random access preamble again, and
tsubframe represents a subframe duration,

wherein the communications apparatus is configured to receive the RAR based on the random access parameter, and
wherein, in response to the communications apparatus not receiving the RAR in a first random access cycle, the at least one processor is configured to actively shorten, in the first random access cycle, at least one of tY or tbackoff.