# US 11,910,442 B2 · Random access control method and random access control device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,442 B2 - Document ID: US11910442B2 - Status: Granted - Kind: B2 - Application number: 17/265,783 - Filed: 2018-08-03 - Published: 2021-06-03 - Granted: 2024-02-20 - Earliest claimed: 2018-08-03 - Assignees: Beijing Xiaomi Mobile Software Co., Ltd. - Applicants: Beijing Xiaomi Mobile Software Co., Ltd. - Inventors: Xiaowei Jiang - Web page: https://patentgrep.com/patent/US11910442B2 ## CPC - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 74/0838: using contention-free random access [CFRA] - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The present disclosure provides a random access control method, an electronic device, and a non-transitory computer readable storage medium. The method includes that a user equipment (UE) determines whether the random access process is successfully completed in response to receiving a bandwidth part switch command for a cell associated with a random access process during the random access process. Additionally, the UE stops the random access process in response to determining that the random access process is unsuccessfully completed. Furthermore, the UE switches a bandwidth part according to the bandwidth part switch command without continuing the random access process in the switched bandwidth part. ## Claims ### Claim 1 A random access control method, comprising: receiving, by a user equipment (UE), a bandwidth part switch command for a cell associated with a random access process during the random access process, determining, by the UE, whether the random access process is successfully completed; determining, by the UE, that the random access process is unsuccessfully completed, stopping, by the UE, the random access process; and switching, by the UE, a bandwidth part according to the bandwidth part switch command without continuing the random access process in the switched bandwidth part; wherein before stopping, by the UE, the random access process, the method further comprises: determining, by the UE, whether a switched uplink bandwidth part and a switched downlink bandwidth part have a same identifier; and determining, by the UE, that the switched uplink bandwidth part and the switched downlink bandwidth part have different identifiers. ### Claim 2 (depends on 1) The method according to claim 1, wherein before stopping, by the UE, the random access process, the method further comprises: determining, by the UE, whether the bandwidth part switch command is to switch a first downlink bandwidth part associated with the random access process to a second downlink bandwidth part; and determining, by the UE, that the bandwidth part switch command is to switch the first downlink bandwidth part associated with the random access process to the second downlink bandwidth part. ### Claim 3 (depends on 1) The method according to claim 1, wherein before stopping, by the UE, the random access process, the method further comprises: determining, by the UE, whether the cell associated with the random access process is a primary cell or a primary secondary cell; and determining, by the UE, that the cell associated with the random access process is the primary cell or the primary secondary cell. ### Claim 4 (depends on 1) The method according to claim 1, wherein before stopping, by the UE, the random access process, the method further comprises: determining, by the UE, whether the bandwidth part switch command is to switch an uplink bandwidth part and whether the switched bandwidth part is configured with random access resources; and determining, by the UE, that the bandwidth part switch command is to switch the uplink bandwidth part and the switched bandwidth part is not configured with the random access resources. ### Claim 5 (depends on 1) The method according to claim 1, further comprising: determining, by the UE, that the switched uplink bandwidth part and the switched downlink bandwidth part have the same identifier and the random access process is triggered by a beam failure recovery, determining, by the UE, whether the bandwidth part before switching and the switched bandwidth part have a same wireless link detection configuration parameter; and determining, by the UE, that the bandwidth part before switching and the switched bandwidth part have different wireless link detection configuration parameter. ### Claim 6 (depends on 1) The method according to claim 1, further comprising: determining, by the UE, that the switched uplink bandwidth part and the switched downlink bandwidth part have the same identifier and the random access process is triggered by the beam failure recovery, determining whether the switched downlink bandwidth part is associated with an available beam measurement result; and determining, by the UE, that the switched downlink bandwidth part is not associated with the available beam measurement result. ### Claim 7 An electronic device, comprising: a processor; and a memory storing processor-executable instructions; wherein the processor is configured to perform acts comprising: receiving a bandwidth part switch command for a cell associated with a random access process during the random access process, determining whether the random access process is successfully completed; determining that the random access process is unsuccessfully completed, stopping the random access process; and switching a bandwidth part according to the bandwidth part switch command without continuing the random access process in the switched bandwidth part; wherein before stopping the random access process, the method further comprises: determining, by a user equipment (UE), whether a switched uplink bandwidth part and a switched downlink bandwidth part have a same identifier; and determining, by the UE, that the switched uplink bandwidth part and the switched downlink bandwidth part have different identifiers. ### Claim 8 A non-transitory computer readable storage medium storing a plurality of programs for execution by an electronic device having one or more processors, wherein the plurality of programs, when executed by the one or more processors, cause the electronic device to perform acts comprising: receiving a bandwidth part switch command for a cell associated with a random access process during the random access process, determining whether the random access process is successfully completed; determining that the random access process is unsuccessfully completed, stopping the random access process; and switching a bandwidth part according to the bandwidth part switch command without continuing the random access process in the switched bandwidth part; wherein before stopping the random access process, the method further comprises: determining, by a user equipment (UE), whether a switched uplink bandwidth part and a switched downlink bandwidth part have a same identifier; and determining, by the UE, that the switched uplink bandwidth part and the switched downlink bandwidth part have different identifiers.