Synchronization for extending battery life
AssigneeInterDigital Technology Corporation
InventorsSteven Jeffrey Goldberg, Stephen E. Terry
Life of this patent
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Abstract
The present invention discloses a method and system for efficiently supporting data calls to WTRUs in systems that also support telephony. Various types of data is transmitted on a known schedule which is tightly synchronized to a predetermined time frame. The WTRUs synchronize their wake-up periods to search for data at times when data may or will actually be transmitted to them.
Claims15
A method for use in a wireless transmit/receive unit (WTRU), the method comprising:
- receiving, from a base station, a frame including a synchronization schedule, wherein the frame includes a plurality of time slots and the synchronization schedule indicates at least one of the plurality of time slots that includes data intended for the WTRU;
- receiving data during the at least one of the plurality of time slots indicated as including data intended for the WTRU;
- and
- operating in a quiescent state during at least one of the plurality of time slots not indicated as including data intended for the WTRU.
A wireless transmit/receive unit (WTRU) comprising:
- a receiver configured to receive, from a base station, a synchronization schedule, wherein data is received in frames and each frame includes a plurality of time slots, the synchronization schedule indicates, for at least one frame, at least one of the plurality of time slots of the at least one frame that includes data intended for the WTRU;
- and
- a processor configured to activate the WTRU for receipt of data during the at least one of the plurality of time slots indicated as including data intended for the WTRU, and to operate the WTRU in a quiescent state during at least one of the plurality of time slots not indicated as including data intended for the WTRU.
A method for use in a wireless transmit/receive unit (WTRU), the method comprising:
- receiving a synchronization schedule from a base station, wherein data is received in frames and each frame includes a plurality of time slots and the synchronization schedule indicates, for each frame, which of the plurality of time slots include data intended for the WTRU;
- receiving data during each of the plurality of time slots indicated in the synchronization schedule as including data intended for the WTRU;
- and
- entering a quiescent state during each of the plurality of time slots not indicated in the synchronization schedule as including data intended for the WTRU.
Dependencies are inferred from the claim text.