# US 11,445,506 B2 · Secondary cell management method, centralized unit, and base station > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,445,506 B2 - Document ID: US11445506B2 - Status: Granted - Kind: B2 - Application number: 16/967,853 - Filed: 2019-01-14 - Published: 2021-02-18 - Granted: 2022-09-13 - Earliest claimed: 2018-02-09 - Assignees: Zte Corporation - Applicants: Zte Corporation - Inventors: Jiren Han; Yin Gao - Web page: https://patentgrep.com/patent/US11445506B2 ## CPC - H04W 72/046: {the resource being in the space domain, e.g. beams} - H04W 24/02: Arrangements for optimising operational condition - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 36/30: by measured or perceived connection quality data - H04W 72/29: between an access point and the access point controlling device - H04W 72/542: using measured or perceived quality - H04W 88/085: {Access point devices with remote components} - H04W 92/12: between access points and access point controllers - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Provided are a secondary cell management method, a DU, a CU, and a base station. The method includes: acquiring, by a first network element, first trigger information; and managing, by the first network element, a secondary cell (Scell) for a user equipment (UE) according to the first trigger information. ## Claims ### Claim 1 A secondary cell management method, comprising: acquiring, by a first network element, trigger information; and managing, by the first network element, a secondary cell (SCell) for a user equipment (UE) according to the trigger information; wherein the acquiring, by the first network element, the trigger information comprises: receiving, by the first network element, feedback sent by a second network element, wherein the feedback comprises the second network element refuses a change request sent by the first network element for changing a cell under the second network element to a first SCell; wherein the managing, by the first network element, the secondary cell for the UE according to the trigger information comprises: deciding, by the first network element, a SCell change according to the feedback; and wherein the first network element comprises a centralized unit, the second network element comprises a distributed unit. ### Claim 2 (depends on 1) The method of claim 1, wherein the acquiring, by the first network element, the trigger information comprises: acquiring, by the first network element, a first measurement report of the UE, wherein the first measurement report is used for indicating that network quality of the UE satisfies a first preset condition, wherein the trigger information comprises the first measurement report. ### Claim 3 (depends on 2) The method of claim 2, wherein the managing, by the first network element, the SCell for the UE according to the trigger information comprises: adding, by the first network element, an SCell to the UE according to the first measurement report. ### Claim 4 (depends on 1) The method of claim 1, wherein the acquiring, by the first network element, the trigger information comprises: acquiring, by the first network element, a second measurement report of the UE, wherein the second measurement report is used for indicating that the network quality of the UE satisfies a second preset condition, wherein the trigger information comprises the second measurement report. ### Claim 5 (depends on 4) The method of claim 4, wherein the managing, by the first network element, the SCell for the UE according to the trigger information comprises: deleting, by the first network element, an SCell from the UE according to the second measurement report. ### Claim 6 (depends on 1) An electronic apparatus, comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to perform the method of claim 1. ### Claim 7 A base station, comprising a first network element and a second network element, wherein the first network element comprises a first processor and a first memory storing an instruction executable by the first processor, and the second network element comprises a second processor and a second memory storing an instruction executable by the second processor; wherein the first processor is configured to acquire a first measurement report of a user equipment (UE), and add a secondary cell (SCell) to the UE according to the first measurement report, wherein the first measurement report is used for indicating that network quality of the UE satisfies a first preset condition; wherein the first processor is configured to receive feedback sent by the second processor, wherein the feedback comprises the second network element refuses a change request sent by the first processor for changing a cell under the second network element to a first SCell; wherein the first processor is configured to decide a SCell change according to the feedback; and wherein the first network element comprises a centralized unit, the second network element comprises a distributed unit. ### Claim 8 (depends on 7) The base station of claim 7, wherein the first processor is configured to acquire a second measurement report of the UE, and delete an SCell from the UE according to the second measurement report, wherein the second measurement report is used for indicating that the network quality of the UE satisfies a second preset condition. ### Claim 9 (depends on 7) The base station of claim 7, wherein the first processor is configured to send the change request to the second network element, wherein the change request is used for requesting to change to the first SCell. ### Claim 10 (depends on 7) The base station of claim 7, wherein the first processor is configured to, in response to a second SCell being in a preset SCell list, decide to change the first SCell to the second SCell. ### Claim 11 (depends on 1) A non-transitory storage medium storing a computer program, wherein when the computer program is executed, the method of claim 1 is performed. ### Claim 12 A secondary cell management method, comprising: performing, by a first network element, management on a secondary cell (SCell) under a second network element through a first interface message; and wherein the management on the SCell comprises: requesting, by the first network element, to change the SCell at the second network element; wherein the requesting, by the first network element, to change the SCell at the second network element comprises: sending, by the first network element, a change request for requesting to change a cell under the second network element to a first SCell to the second network element; and in response to the second network element refuses the change request, deciding, by the first network element, a SCell change; and wherein the first network element comprises a centralized unit, the second network element comprises a distributed unit. ### Claim 13 (depends on 12) The method of claim 12, wherein the first interface message comprises: an UE CONTEXT MODIFICATION REQUEST message. ### Claim 14 (depends on 12) The method of claim 12, wherein messages carried in the first interface message comprise at least one of: an SCell list to be added, an SCell list to be changed, an SCell list to be deleted. ### Claim 15 (depends on 12) The method of claim 12, after the second network element obtains the first interface message, the second network element sends a response message to the first network element and is configured to perform one of: accepting, by the second network element, to change to the first SCell; or refusing, by the second network element, to change to the first SCell. ### Claim 16 (depends on 12) The method of claim 12, wherein the management on the SCell further comprises at least one of: requesting, by the first network element, to add the SCell at the second network element; or requesting, by the first network element, to delete the SCell at the second network element. ### Claim 17 (depends on 12) The method of claim 12, wherein in response to the second network element refuses the change request, the method further comprises: receiving, by the first network element, a cause value reported by the second network element that the second network element refuses to change to the first SCell. ### Claim 18 (depends on 12) The method of claim 12, wherein after sending, by the first network element, the change request for requesting to change the cell under the second network element to the first SCell to the second network element, the method further comprises: in response to the second network element accepts the change request, changing to the first SCell is accepted by the second network element.