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Optimal load-based wireless session context transfer
| Details |
Inventors: Farley, Kevin L.; Amalfitano, Carlo;
Assignee: IPR Licensing, Inc. (Wilmington, DE)
Primary Examiner: Maung; Nay
Assistant Examiner: Trinh; Tan
Attorney, Agent or Firm: Hamilton, Brook, Smith & Reynolds, P.C.
In a wireless communication network, a system and method for transferring a wireless session context allows a subscriber access unit to transfer the session context from one base station to another base station depending on a loading factor which indicates the throughput load through each of the base stations. A subscriber access unit which is located in an overlapping wireless coverage area served by both base stations can transfer the session context such that it is served by the base station having the least throughput load. Subscriber access units in overlapping coverage areas will therefore tend to transfer session context to the least burdened base station processor. In this manner, performance is improved because subscriber access units within a wireless coverage area of multiple base station processors are transferred to the base station able to provide the maximum throughput. Further, subscriber access units may be mobile, traveling between coverage areas and passing through overlapping coverage areas. A check is made to determine which of the base station processors corresponding to the coverage areas is least burdened by throughput. A loading factor indicative of resource utilization of each of the base station processors is computed. Each of the loading factors is compared, and the session context is transferred, or switched to the base station having the lowest loading factor. |
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DETAILED DESCRIPTION A system and method for transferring a wireless session context in a wireless communication network allows a subscriber access unit to transfer the session context from a first base station to a second base station depending on a loading factor which indicates the throughput load through each of the first and second base stations.
A subscriber access unit which is located in an overlapping wireless coverage area of both the first base station and the second base station can transfer the session context such that it is in wireless communication with the base station having the least throughput load.
Subscriber access units in overlapping coverage areas will therefore tend to transfer session context to the least burdened base station processor.
In this manner, performance is improved because subscriber access units within a wireless coverage area of multiple base station processors are transferred to the base station able to provide the maximum throughput.
The wireless communication network includes a plurality of base station processors with overlapping coverage areas.
Subscriber access units may be located in an overlapping coverage area served by a plurality of base station processors.
Further, subscriber access units may be mobile, traveling between coverage areas and passing through overlapping coverage areas.
When it is determined that a subscriber access unit is in a coverage area of more than one base station, a check is made to determine which of the base station processors corresponding to the coverage areas is least burdened by throughput.
A loading factor indicative of resource utilization of each of the base station processors is computed.
Each of the loading factors is compared, and the session context is transferred, or switched, to the base station having the lowest loading factor.
Alternatively, the session context remains with the base station processor currently serving the subscriber access unit, if the current base station processor has the lowest loading factor
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