Patent ID: 11956824
Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of access control, being applied to user equipment supporting new radio access to an unlicensed spectrum, comprising:
determining a result of listen-before-talk (LBT) detection on a to-be-detected channel, wherein the to-be-detected channel is an unlicensed channel for sending a random access preamble;
increasing a preamble transmission counter by one in response to that the result of the LBT detection indicates a failure, and determining a count value of the preamble counter; and
performing radio link failure processing in response to that the count value of the preamble transmission counter reaches a maximum number of times for transmitting the preamble, wherein maximum number of times for transmitting the preamble and traffic type of a to-be-transmitted traffic have a correspondence, or service class identifier of a to-be-transmitted traffic have a correspondence;
wherein the maximum number of times for transmitting the preamble is larger for delay-insensitive traffic types than for delay-sensitive traffic types, such that the user equipment is capable of performing LBT detection on the unlicensed channel for more times, and avoiding prematurely reaching the maximum number of times for transmitting the preamble and random access failure when the unlicensed channel is busy, and selecting other ways to access a network for the delay-sensitive traffic types, thereby improving access success rate and efficiency of traffic data transmission.