HANDOVER TO ANY CELL OF A TARGET BASE STATION IN A WIRELESS COMMUNICATION SYSTEM
First Claim
1. An apparatus for wireless communication, comprising:
- at least one processor configured to attempt handover of a user equipment (UE) from a cell of a source base station to a first cell of a target base station, and to attempt handover to a second cell of the target base station if the handover to the first cell of the target base station fails, wherein the source base station transfers context information for the UE to the target base station for the handover, and wherein the context information is available to both the first and second cells of the target base station; and
a memory coupled to the at least one processor.
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Abstract
Techniques for performing handover of a user equipment (UE) in a cell-to-base station manner are described. The UE may receive a handover command to perform handover from a source base station to a target base station. The source base station may send context information for the UE to the target base station, and the context information may be available to all cells of the target base station. The UE may attempt handover from a serving cell of the source base station to a first cell of the target base station. The UE may attempt handover to a second cell of the target base station if the handover to the first cell fails. The UE may (i) receive the first and second cells from the source base station or (ii) receive only the first cell from the source base station and determine the second cell based on broadcast system information.
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Citations
35 Claims
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1. An apparatus for wireless communication, comprising:
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at least one processor configured to attempt handover of a user equipment (UE) from a cell of a source base station to a first cell of a target base station, and to attempt handover to a second cell of the target base station if the handover to the first cell of the target base station fails, wherein the source base station transfers context information for the UE to the target base station for the handover, and wherein the context information is available to both the first and second cells of the target base station; and a memory coupled to the at least one processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for wireless communication, comprising:
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attempting handover of a user equipment (UE) from a cell of a source base station to a first cell of a target base station; and attempting handover to a second cell of the target base station if the handover to the first cell of the target base station fails, wherein the source base station transfers context information for the UE to the target base station for the handover, and wherein the context information is available to both the first and second cells of the target base station. - View Dependent Claims (14, 15, 16)
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17. An apparatus for wireless communication, comprising:
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means for attempting handover of a user equipment (UE) from a cell of a source base station to a first cell of a target base station; and means for attempting handover to a second cell of the target base station if the handover to the first cell of the target base station fails, wherein the source base station transfers context information for the UE to the target base station for the handover, and wherein the context information is available to both the first and second cells of the target base station. - View Dependent Claims (18, 19, 20)
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21. A machine-readable medium comprising instructions which, when executed by a machine, cause the machine to perform operations including:
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attempting handover of a user equipment (UE) from a cell of a source base station to a first cell of a target base station; and attempting handover to a second cell of the target base station if the handover to the first cell of the target base station fails, wherein the source base station transfers context information for the UE to the target base station for the handover, and wherein the context information is available to both the first and second cells of the target base station.
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22. An apparatus for wireless communication, comprising:
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at least one processor configured to send a request for handover of a user equipment (UE) from a source base station to a target base station, to send context information for the UE to the target base station, and to send a handover command to the UE to initiate handover of the UE to the target base station, the UE first attempting handover to a first cell of the target base station and next attempting handover to a second cell of the target base station if the handover to the first cell fails; and a memory coupled to the at least one processor. - View Dependent Claims (23, 24, 25, 26)
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27. A method for wireless communication, comprising:
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sending a request for handover of a user equipment (UE) from a source base station to a target base station; sending context information for the UE to the target base station; and sending a handover command to the UE to initiate handover of the UE to the target base station, the UE first attempting handover to a first cell of the target base station and next attempting handover to a second cell of the target base station if the handover to the first cell fails. - View Dependent Claims (28, 29)
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30. An apparatus for wireless communication, comprising:
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at least one processor configured to receive a request for handover of a user equipment (UE) from a source base station to a target base station, to receive context information for the UE from the source base station, to exchange signaling with the UE for handover of the UE to the target base station, the UE first attempting handover to a first cell of the target base station and next attempting handover to a second cell of the target base station if the handover to the first cell fails, and to serve the UE based on the context information if the handover of the UE to the first or second cell is successful; and a memory coupled to the at least one processor. - View Dependent Claims (31, 32)
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33. A method for wireless communication, comprising:
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receiving a request for handover of a user equipment (UE) from a source base station to a target base station; receiving context information for the UE from the source base station; exchanging signaling with the UE for handover of the UE to the target base station, the UE first attempting handover to a first cell of the target base station and next attempting handover to a second cell of the target base station if the handover to the first cell fails; and serving the UE based on the context information if the handover of the UE to the first or second cell is successful. - View Dependent Claims (34, 35)
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Specification