US Patent No. 9,301,218

OVERCOMING HANDOVER FAILURE DUE TO OUT-OF-DATE NEIGHBOR LIST


Patent No. 9,301,218
Issue Date March 29, 2016
Title Overcoming Handover Failure Due To Out-of-date Neighbor List
Inventorship Krishna Sitaram, Chantilly, VA (US)
Daniel Alberto Vivanco, Sterling, VA (US)
Chunmei Lu, Great Falls, VA (US)
Assignee Sprint Communications Company L.P., Overland Park, KS (US)

Claim of US Patent No. 9,301,218

1. One or more non-transitory computer-readable media having embodied thereon computer-usable instructions that, when executed,
facilitate a method for updating a neighbor list, the method comprising:
receiving a notification that a handover of a first mobile device to a first target base station failed, wherein the notification
includes a non-unique identifier associated with the first target base station;

identifying an entry in the neighbor list that is associated with the non-unique identifier;
flagging the entry in response to the notification that the handover failed;
identifying a second target base station for handing over a second mobile device, wherein the second target base station is
associated with the same non-unique identifier as the first target base station;

determining that the entry in the neighbor list associated with the non-unique identifier is flagged;
based on the determination that the entry in the neighbor list is flagged, requesting the second mobile device to send a unique
identifier that is associated with the second target base station;

receiving the unique identifier that is associated with the second target base station; and
when the received unique identifier does not correspond to a unique identifier in the flagged entry associated with the non-unique
identifier, then updating the neighbor list with the received unique identifier.