Method and system for coordinating a sleep mode wake-up time
View Patent ↗The invention concerns a method ( 200 ) and system ( 100 ) for coordinating a sleep mode wake-up time. The method can include the steps of entering ( 214 ) a sleep mode and selecting ( 214 ) a paging group, advising ( 216 ) a base station ( 110 ) of the sleep mode and the selection of the paging group and coordinating ( 218 ) a wake-up time of the sleep mode with a second power saving mode that includes a common availability time ( 312 ) for mobile stations ( 116 ) communicating with the base station to detect signals from the base station. As an example, the second power saving mode ( 300 ) can be an idle mode, and the common availability time can be a listening interval of the idle mode.
1. A method for coordinating a sleep mode wake-up time, comprising:
entering a sleep mode and selecting a paging group;
advising a base station of the sleep mode and the selection of the paging group; and
coordinating a wake-up time of the sleep mode with a second power saving mode that includes a common availability time for mobile stations communicating with the base station to detect signals from the base station;
wherein the second power saving mode is an idle mode and the common availability time is a listening interval of the idle mode.
2. The method according to claim 1 , wherein the paging group is one of a number of paging groups that are set by the base station for the idle mode and the method further comprises:
transmitting a location update to the base station; and
in response, receiving information about the paging groups set by the base station.
3. The method according to claim 1 , further comprising receiving an indication during the common availability time that indicates the presence of traffic intended for a mobile station.
4. The method according to claim 3 , wherein the indication is a paging message.
5. The method according to claim 1 , further comprising maintaining a registration with the base station during the entering, advising and coordinating steps.
6. The method according to claim 1 , wherein the idle mode is a mode that mobile stations enter and then de-register from the base station.
7. A mobile device, comprising:
a receiver for communicating with a base station; and
a processor that is communicatively coupled to the receiver, wherein in a sleep mode, the processor is operable to:
instruct the receiver to selectively shut down; and
coordinate a wake-up time for the receiver with a common availability time of a second power saving mode such that the receiver activates during the common availability time to receive a message from the base station;
wherein the second power saving mode is an idle mode and the common availability time is a listening interval of the idle mode.
8. The device according to claim 7 , wherein the processor is further operable to select a paging group that is set by the base station for the idle mode and the paging group has a pre-defined listening interval.
9. The device according to claim 7 , wherein the message is a paging message that indicates the presence of traffic intended for the mobile device.
10. The device according to claim 7 , wherein during the sleep mode, the processor is further operable to maintain a registration with the base station.