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US 2014/0274053 A1Published application
Methods and Apparatus For Handover Management
AssigneeNokia Siemens Networks Oy
InventorsMatti Latva-Aho, Kapuruhamy Manosha
Life of this patent
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Abstract
Systems and techniques for handover management between adjacent cells. A base station, such as a macro base station serving a macro cell identifies a user device as a candidate for handover based on specified criteria and communicates a handover request to a femto base station. The femto base station evaluates specified conditions, such as energy efficiency, for the cell it is serving and allows the handover only if the handover would improve the conditions.
Claims15
An apparatus comprising:
- at least one processor;
- memory storing computer program code;
- wherein the memory storing the computer program code is configured to, with the at least one processor, cause the apparatus to at least:
- upon a request from a macro base station serving a user device:
- perform a first performance evaluation affecting an area served by a femto base station, wherein the evaluation presumes that the user device is served by the macro base station;
- perform a second performance evaluation affecting the area served by the femto base station, wherein the evaluation presumes that the user device is served by the femto base station;
- compare results of the first performance evaluation and the second performance evaluation;
- and
- if the second performance evaluation indicates an improvement, cause direction of handover of the user device by the macro base station to the femto base station.
6 more elements
An apparatus comprising:
- at least one processor;
- memory storing computer program code;
- wherein the memory storing the computer program code is configured to, with the at least one processor, cause the apparatus to at least:
- configure a message including a request for handover of a user device from a macro base station to a femto base station;
- examine a response from the femto base station to the macro base station indicating allowing or denying the request, wherein allowing or denying of the request is based at least in part on a determination if handover to the femto base station would improve energy efficiency of a femto cell served by the base station;
- and
- configure a message directing handover of the user device if the response indicates allowing of the request.
4 more elements
A method comprising:
- upon a request from a macro base station serving a user device:
- performing a first performance evaluation affecting an area served by a femto base station, wherein the evaluation presumes that the user device is served by the macro base station;
- performing a second performance evaluation affecting the area served by the femto base station, wherein the evaluation presumes that the user device is served by the femto base station;
- comparing results of the first performance evaluation and the second performance evaluation;
- and
- if the second performance evaluation indicates an improvement, causing direction of handover of the user device by the macro base station to the femto base station.
3 more elements
A method comprising:
- configuring a message including a request for handover of a user device from a macro base station to a femto base station;
- examining a response from the femto base station to the macro base station indicating allowing or denying the request, wherein allowing or denying of the request is based at least in part on a determination if handover to the femto base station would improve energy efficiency of a femto cell served by the base station;
- and
- configuring a message directing handover of the user device if the response indicates allowing of the request.
1 more element
15-21. (canceled)
Dependencies are inferred from the claim text.