초록 ▼

This invention relates to an arrangement for efficiently providing an up to date neighbor list for base stations serving a wireless cellular telecommunications call. The neighbor list is required by a mobile station measuring signal strengths of signals for surrounding base stations in order to loca

This invention relates to an arrangement for efficiently providing an up to date neighbor list for base stations serving a wireless cellular telecommunications call. The neighbor list is required by a mobile station measuring signal strengths of signals for surrounding base stations in order to locate base stations from which the mobile station can receive strong signals. When one base station receives a revised neighbor list from another base station, it receives a revised neighbor list from another base station, it receives a time stamp identifying when that revised neighbor list was created. Thereafter, when a request for data from a base station is transmitted, it is transmitted with that time stamp; no neighbor list is returned if the time stamp matches the time stamp stored with the neighbor list of the base station receiving the request.

대표청구항 ▼

[What is claimed is:] [1.]storing a neighbor list and an associated time stamp for a plurality of base stations in each base station;in response to detecting a need for adding another base station for a soft handoff, transmitting a request message comprising a time stamp of a stored neighbor list of

[What is claimed is:] [1.]storing a neighbor list and an associated time stamp for a plurality of base stations in each base station;in response to detecting a need for adding another base station for a soft handoff, transmitting a request message comprising a time stamp of a stored neighbor list of the base station to which the request is addressed;if the base station receiving the handoff request has a time stamp for its own neighbor list that is the same as the time stamp of the received request message, transmitting an acknowledgment that does not include a neighbor list;if the base station receiving the handoff request has a time stamp for its own neighbor list that is greater than the time stamp of the received handoff request message, transmitting in an acknowledgment message to the base station that sent the request message, a neighbor list and time stamp stored for the base station that is transmitting the acknowledgment message; andin response to receipt of a neighbor list and time stamp in the acknowledgment message, storing that neighbor list and time stamp as a data base entry for the base station transmitting the acknowledgment.