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US 10,542,520 B2Granted
Efficient paging and idle mode wakeup for wireless devices supporting coverage enhanced mode
AssigneeApple Inc.
InventorsLi Su, Sami M. Almalfouh, Jianxiong Shi
Life of this patent
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Abstract
This disclosure relates to techniques for efficient idle mode wakeup for wireless devices supporting an enhanced coverage mode and a normal coverage mode in a wireless communication system. A wireless device may camp on a cellular base station in idle mode. The wireless device may monitor a control channel associated with the normal coverage mode during a paging occasion. The wireless device may also monitor a control channel associated with the enhanced coverage mode during the paging occasion if a paging indication is not successfully decoded on the control channel associated with the normal coverage mode.
Claims20
An apparatus, comprising:
- a processing element coupled to a memory storing program instructions, wherein the program instructions are executable by the processing element to cause a wireless device to:
- establish a radio resource control (RRC) connection with a cellular base station;
- release the RRC connection with the cellular base station, wherein the wireless device is in an enhanced coverage mode when releasing the RRC connection;
- monitor a control channel associated with the enhanced coverage mode during a paging occasion for a paging indication, wherein the paging occasion includes one of more subframes;
- and
- if the paging indication is successfully decoded based on monitoring the control channel associated with the enhanced coverage mode during the paging occasion:
- determine an amount of time to sleep until attempting to decode a paging message indicated by the paging indication based at least in part on a number of repetitions of the control channel associated with the enhanced coverage mode used to successfully decode the paging indication;
- enter a sleep mode for the determined amount of time, wherein the wireless device is in the sleep mode through at least one repetition of the control channel associated with the enhanced coverage mode used to successfully decode the paging indication;
- and
- attempt to decode the paging message indicated by the paging indication after the determined amount of time.
7 more elements
A user equipment device (UE), comprising:
- one or more radios;
- a non-transitory memory medium;
- a processing element coupled to the one or more radios and the non-transitory memory medium, wherein the UE is configured to:
- establish a radio resource control (RRC) connection with a cellular base station;
- release the RRC connection with the cellular base station, wherein the UE is in an enhanced coverage mode when releasing the RRC connection;
- monitor a control channel associated with the enhanced coverage mode during a paging occasion for a paging indication, wherein the paging occasion includes one of more subframes;
- and
- if the paging indication is successfully decoded based on monitoring the control channel associated with the enhanced coverage mode during the paging occasion:
- determine an amount of time to sleep until attempting to decode a paging message indicated by the paging indication based at least in part on estimated channel conditions for the UE;
- enter a sleep mode for the determined amount of time, wherein the UE remains in the sleep mode through at least one repetition of the paging message indicated by the paging indication;
- and
- attempt to decode the paging message indicated by the paging indication after the determined amount of time.
9 more elements
A method, comprising:
- by a user equipment device (UE):
- establishing a radio resource control (RRC) connection with a cellular base station;
- releasing the RRC connection with the cellular base station, wherein the UE is in an enhanced coverage mode when releasing the RRC connection;
- monitoring a control channel associated with the enhanced coverage mode during a paging occasion for a paging indication, wherein the paging occasion includes one of more subframes;
- and
- if the paging indication is successfully decoded based on monitoring the control channel associated with the enhanced coverage mode during the paging occasion:
- determining an amount of time to sleep until attempting to decode a paging message indicated by the paging indication based at least in part on estimated channel conditions for the UE;
- entering a sleep mode for the determined amount of time, wherein the UE remains in the sleep mode through at least one repetition of the paging message indicated by the paging indication;
- and
- attempting to decode the paging message indicated by the paging indication after the determined amount of time.
7 more elements
Dependencies are inferred from the claim text.