US 11,985,518 B2
PCI conflict detection and optimization method, apparatus, and system
Longyu Cao, Shanghai (CN); and Yaoguang Wang, Shanghai (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Sep. 30, 2021, as Appl. No. 17/490,881.
Application 17/490,881 is a continuation of application No. PCT/CN2020/078073, filed on Mar. 5, 2020.
Claims priority of application No. 201910254041.6 (CN), filed on Mar. 30, 2019.
Prior Publication US 2022/0022060 A1, Jan. 20, 2022
Int. Cl. H04W 24/02 (2009.01); H04W 8/26 (2009.01); H04W 24/04 (2009.01); H04L 41/04 (2022.01); H04W 16/02 (2009.01); H04W 84/18 (2009.01)
CPC H04W 24/02 (2013.01) [H04W 8/26 (2013.01); H04W 24/04 (2013.01); H04L 41/04 (2013.01); H04W 16/02 (2013.01); H04W 84/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, by a first control network element, a physical cell identifier (PCI) conflict detection notification message for triggering the first control network element to perform PCI conflict detection, wherein the PCI conflict detection notification message is a neighbor relation notification message received by the first control network element from a first radio access network element, the neighbor relation notification message comprises a neighbor relation table (NRT) and a neighbor cell list (NCL) corresponding to the first radio access network element;
determining, by the first control network element, that a PCI conflict exists in at least two cells;
determining whether the at least two cells are managed by the first control network element;
in response to determining that the at least two cells are cells managed by the first control network element, performing, by the first control network element, PCI optimization on PCI conflicted cells managed by the first control network element, wherein the PCI conflicted cells comprise the at least two cells; and
in response to determining that at least one of the at least two cells is not a cell managed by the first control network element, sending, by the first control network element, a PCI optimization request message to a first management network element, wherein the PCI optimization request message requests the first management network element to perform PCI optimization.