Method of initiating handover pre-preparation and related communication device
AssigneeHTC Corporation
InventorMamadou Kone
Life of this patent
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Abstract
A method of initiating handover pre-preparation for a mobile device in a wireless communication system is disclosed. The method comprises the steps of receiving a pre-prepared handover command from a source base station, wherein the pre-prepared handover command includes context of a target base station, whereby the mobile device does not perform a handover procedure based on the pre-prepared handover command and keeping the context for a period of time.
Claims9
A method of initiating handover pre-preparation for a mobile device in a wireless communication system, the method comprising the steps of:
- receiving a first pre-prepared handover command from a source base station, wherein the first pre-prepared handover command includes first context of a first target base station, whereby the mobile device does not perform a handover procedure when receiving the first pre-prepared handover command;
- starting a timer upon receiving the first pre-prepared handover command from the source base station and keeping the first context until the timer expires or the handover procedure is performed;
- receiving out-of-service information from the source base station, wherein the out-of-service information indicates out-of-service duration and an out-of-service cause;
- and
- determining whether to stay connected to a cell served by the source base station or to handover to the first target base station by using the first context, according to the out-of-service information.
A communication device for initiating handover pre-preparation in a wireless communication system, the communication device comprises:
- means for receiving a first pre-prepared handover command from a source base station, wherein the first pre-prepared handover command includes first context of a first target base station, whereby the mobile device does not perform a handover procedure when receiving the first pre-prepared handover command;
- means for starting a first timer upon receiving the first pre-prepared handover command from the source base station and keeping the first context until the first timer expires or the handover procedure is performed;
- means for receiving out-of-service information from the source base station, wherein the out-of-service information indicates out-of-service duration and an out-of-service cause;
- and
- means for performing the handover procedure to the first target base station based on the first context when a handover command corresponding to the first pre-prepared handover command is received from the source base station.
A communication device for initiating handover pre-preparation in a wireless communication system, the communication device comprises:
- means for receiving a first pre-prepared handover command from a source base station, wherein the first pre-prepared handover command includes first context of a first target base station, whereby the mobile device does not perform a handover procedure when receiving the first pre-prepared handover command;
- means for starting a first timer upon receiving the first pre-prepared handover command from the source base station and keeping the first context until the first timer expires or the handover procedure is performed;
- means for starting a second timer when the mobile device detects an abnormal radio link;
- means for determining a radio link failure when the abnormal radio link is not recovered before the second timer expires;
- and
- means for performing the handover procedure.
Dependencies are inferred from the claim text.