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US 10,314,035 B2Granted
Sub-frame allocation for low power LTE
AssigneeApple Inc.
InventorLi Su
Life of this patent
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Abstract
In some embodiments, a user equipment (UE) and base station implement improved communication methods which enable a UE to operate according to a sub-frame allocation based on its current power state. The UE may transmit information including a maximum number of uplink (UL) sub-frames the UE can transmit in an allocation period and receive, from a base station, a first sub-frame allocation based on at least the first information. In embodiments, the UE may merge an un-allocated UL sub-frame's downlink association set with a next closest allocated UL sub-frame's downlink association set.
Claims20
A user equipment device (UE), comprising:
- at least one antenna;
- at least one radio, wherein the at least one radio is configured to perform cellular communication using at least one radio access technology (RAT);
- one or more processors coupled to the at least one radio, wherein the one or more processors and the at least one radio are configured to perform voice and/or data communications;
- wherein the one or more processors and the at least one radio are configured to:
- receive, from a base station, a first sub-frame allocation for an allocation period, wherein the sub-frame allocation is based on pending data buffer status reports, wherein the sub-frame allocation allocates more uplink (UL) sub-frames than the UE is capable of transmitting on;
- transmit, to the base station, first information comprising an indication of a maximum number of UL sub-frames the UE is capable of transmitting on in the allocation period, wherein the maximum number of UL sub-frames is based, at least in part, on power requirements for transmission of the UL sub-frames, and wherein the maximum number of UL sub-frames is less than the number of UL sub-frames allocated by the base station;
- receive, from a base station, a second sub-frame allocation based on at least the first information, wherein the second sub-frame allocation allocates a number of UL sub-frames less than or equal to the maximum number of UL sub-frames the UE is capable of transmitting on in the allocation period;
- and
- suspend at least new transmissions of lower priority UL data, wherein the lower priority UL data comprises non time-sensitive data.
6 more elements
An apparatus, comprising:
- a memory;
- and
- a processor in communication with the memory, wherein the processor is configured to:
- generate instructions to transmit an indication of a reduction in a maximum number of uplink (UL) sub-frames that can be transmitted in an allocation period to a base station, wherein the reduction is based, at least in part, on power requirements for transmission of the UL sub-frames, and wherein the maximum number of UL sub-frames, after reduction, is less than a number of UL sub-frames previously allocated by the base station for the allocation period;
- receive a first sub-frame allocation based on at least the indication of the reduction in the maximum number of UL sub-frames that can be transmitted in an allocation period, wherein the first sub-frame allocation allocates a number of UL sub-frames less than or equal to the maximum number of UL sub-frames, after reduction, that can be transmitted in the allocation period;
- generate instructions to transmit a confirmation of the first sub-frame allocation to the base station;
- and
- generate instructions to suspend at least new transmissions of lower priority UL data, wherein the lower priority UL data comprises non time-sensitive data.
5 more elements
A non-transitory computer readable memory medium storing program instructions executable by a processor of a user equipment device (UE) to:
- generate instructions to transmit, to a base station, first information comprising an indication of a reduction in a maximum number of uplink (UL) sub-frames the UE capable of transmitting on in an allocation period, wherein the reduction in the maximum number of UL sub-frames is based, at least in part, on power requirements for transmission of the UL sub-frames, and wherein the maximum number of UL sub-frames, after reduction, is less than a number of UL sub-frames previously allocated by the base station for the allocation period;
- receive, from the base station, a first sub-frame allocation based on at least the first information, wherein the first sub-frame allocation allocates a number of UL sub-frames less than or equal to the maximum number of UL sub-frames, after reduction, that the UE is capable of transmitting on in the allocation period;
- generate instructions to suspend at least new transmissions of lower priority UL data, wherein the lower priority UL data comprises non time-sensitive data;
- and
- merge an un-allocated UL sub-frame's downlink association set with a next closest allocated UL sub-frame's downlink association set.
2 more elements
Dependencies are inferred from the claim text.