Signalling mechanisms for wireless device handover
AssigneeOfinno Technologies, LLC
InventorEsmael Hejazi Dinan
Life of this patent
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Abstract
A serving base station transmits, in response to making a handover decision for a wireless device, a first message to a target base station. The serving base station receives from the target base station a second message comprising configuration parameters of a plurality of cells. The configuration parameters comprise a cell group index for a secondary cell identifying a cell group. The serving base station transmits a third message to the wireless device. The third message comprises configuration parameters and is configured to cause the wireless device to start a synchronization process with the target base station.
Claims15
A method comprising:
- a) transmitting, by a serving base station to a target base station, at least one first message in response to making a handover decision by said serving base station for a wireless device;
- b) receiving, by said serving base station from said target base station, at least one second message comprising a plurality of parameters of a plurality of cells for said wireless device, said plurality of parameters comprising:
- i) configuration parameters of a primary cell and at least one secondary cell;
- and
- ii) a cell group index for a secondary cell in said at least one secondary cell, said cell group index identifying one of a plurality of cell groups, said plurality of cell groups comprising:
- (1) a primary cell group comprising a first subset of said plurality of cells, said first subset comprising said primary cell;
- and
- (2) a secondary cell group comprising a second subset of said at least one secondary cell;
- and
- c) transmitting, by said serving base station to said wireless device, a third message:
- i) comprising said plurality of parameters;
- and
- ii) configured to cause said wireless device to start a synchronization process with said target base station.
A serving base station comprising:
- a) one or more communication interfaces;
- b) one or more processors;
- and
- c) memory storing instructions that, when executed, cause said serving base station to:
- i) transmit at least one first message to a target base station in response to making a handover decision by said serving base station for a wireless device;
- ii) receive, at least one second message from said target base station, said at least one second message comprising a plurality of parameters of a plurality of cells for said wireless device, said plurality of parameters comprising:
- (1) configuration parameters of a primary cell and at least one secondary cell;
- and
- (2) a cell group index for a secondary cell in said at least one secondary cell, said cell group index identifying one of a plurality of cell groups, said plurality of cell groups comprising:
- a primary cell group comprising a first subset of said plurality of cells, said first subset comprising said primary cell;
- and
- a secondary cell group comprising a second subset of said at least one secondary cell;
- and
- iii) transmit to said wireless device, a third message:
- (1) comprising said plurality of parameters;
- and
- (2) configured to cause said wireless device to start a synchronization process with said target base station.
Dependencies are inferred from the claim text.