Abstract
Techniques for transmitting data by a power-limited user equipment (UE) in a wireless communication system are described. The UE may transmit data of different types on one or more carriers and may be power limited. In some aspects the UE may prioritize the data to transmit based on the priorities of the different data types the priorities of carriers on which the data is transmitted and/or other criteria. In one design the UE may obtain data to transmit on at least one carrier for the uplink. The UE may determine that it is power limited for transmission on the at least one carrier. The UE may prioritize the data to transmit based on at least one criterion. The UE may allocate its available transmit power to the prioritized data and may transmit the prioritized data at the allocated transmit power.
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Specification Information
Specification Information
Technologies
Family Information
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Power Control
Product
Use Cases
Wireless communication
Services
Claim
1. A method for wireless communication, comprising: obtaining data to transmit on at least one carrier for uplink at a user equipment (UE); determining that the UE is power limited for transmission on the at least one carrier; and prioritizing the data to transmit based on at least one criterion in response to the UE being power limited.
2. The method of claim 1, wherein the determining that the UE is power limited comprises determining total required transmit power for the data to transmit, and determining that the UE is power limited based on the total required transmit power exceeding available transmit power of the UE.
3. The method of claim 1, wherein the at least one criterion comprises channel type, or data type, or control data type, or traffic data type, or carrier priority, or signaling type, or a combination thereof.
4. The method of claim 1, wherein the prioritizing the data to transmit comprises prioritizing the data to transmit based on data type, with control data having higher priority than traffic data.
5. The method of claim 1, wherein control data multiplexed with traffic data has higher priority than traffic data.
6. The method of claim 1, wherein the prioritizing the data to transmit comprises prioritizing the data to transmit based on control data type, with acknowledgement/negative acknowledgement (ACK/NACK) having higher priority than channel quality indicator (CQI), or scheduling request, or rank indicator (RI), or precoding matrix indicator (PMI), or a combination thereof.
7. The method of claim 1, wherein the prioritizing the data to transmit comprises prioritizing the data to transmit based on traffic data type, with delay sensitive traffic data having higher priority than delay tolerant traffic data.
8. The method of claim 1, wherein the prioritizing the data to transmit comprises prioritizing the data to transmit based on channel type, with data for a control channel having higher priority than data for a data channel.
9. The method of claim 1, wherein the prioritizing the data to transmit comprises prioritizing the data to transmit based on signaling type, with data for upper layer signaling having higher priority than data for physical layer
10. The method of claim 9, wherein the upper layer signaling comprises Radio Resource Control (RRC) signaling, or Medium Access Control (MAC) signaling, or both
11. The method of claim 1 , wherein the data to transmit comprises data of a plurality of data types, the method further comprising: allocating available transmit power to the data to transmit, one data type at a time, starting with a highest priority data type
12. The method of claim 1, wherein a plurality of carriers are available for the uplink, and wherein one carrier among the plurality of carriers is designated to carry control data on the uplink
13. The method of claim 12, wherein the data to transmit is prioritized based on priorities of the plurality of carriers, and wherein the carrier designated to carry control data on the uplink has a highest priority among the plurality of carriers
14. The method of claim 1, wherein the at least one carrier comprises a plurality of carriers
15. The method of claim 14, wherein the prioritizing the data to transmit comprises prioritizing the data to transmit based on priorities of the plurality of carriers, with data for a higher priority carrier having higher priority than data for a lower priority carrier
16. The method of claim 15, wherein the priorities of the plurality of carriers are determined based on a received signal quality for each carrier, or a modulation and coding scheme for each carrier, or priority of data to transmit on each carrier, or expected interference on each carrier, or loading on each carrier, or amount of assigned resources on each carrier, or a combination thereof
17. The method of claim 15 , further comprising : allocating available transmit power to the plurality of carriers, one carrier at a time, starting with a highest priority carrier
18. The method of claim 14, wherein the data to transmit comprises data of a plurality of data types
19. The method of claim 18, wherein the prioritizing the data to transmit comprises prioritizing the data to transmit based on priorities of the plurality of data types, and prioritizing data of each data type based on priorities of the plurality of carriers.
20. The method of claim 18, wherein the prioritizing the data to transmit comprises prioritizing the data to transmit based on priorities of the plurality of carriers, and prioritizing data for each carrier based on priorities of the plurality of data types.
21. The method of claim 18, further comprising: allocating available transmit power to the data to transmit based on priorities of the plurality of data types and priorities of the plurality of carriers.
22. The method of claim 18, further comprising: allocating available transmit power to the data to transmit, one data type at a time, starting with a highest priority data type; and allocating the available transmit power to the data of each data type based on priorities of the plurality of carriers.
23. The method of claim 14, further comprising: allocating transmit power to data for each carrier based on required transmit power for the data.
24. The method of claim 23, wherein the allocating transmit power comprises allocating transmit power to the data for each carrier based further on a scaling factor for the carrier.
25. The method of claim 24, wherein the scaling factor for each carrier is determined based on priority of the carrier, or data type of the data to transmit on the carrier, or priority of the data to transmit on the carrier, or a combination thereof.
26. The method of claim 23, wherein the allocating transmit power comprises allocating transmit power to the data for each carrier based further on total required transmit power for the data to transmit on the plurality of carriers, or available transmit power of the UE, or both.
27. The method of claim 15, further comprising: receiving signaling conveying the priorities of the plurality of carriers.
28. The method of claim 15, further comprising: selecting one of the plurality of carriers to transmit high priority data, the selected carrier being designated as a high priority carrier.
29. An apparatus for wireless communication, comprising: means for obtaining data to transmit on at least one carrier for uplink at a user equipment (UE); means for determining that the UE is power limited for transmission on the at least one carrier; and means for prioritizing the data to transmit based on at least one criterion in response to the UE being power limited.
30. The apparatus of claim 29, wherein the data to transmit comprises data of a plurality of data types, the apparatus further comprising: means for allocating available transmit power to the data to transmit, one data type at a time, starting with a highest priority data type.
31. The apparatus of claim 29, wherein the at least one carrier comprises a plurality of carriers, and wherein the means for prioritizing the data to transmit comprises means for prioritizing the data to transmit based on priorities of the plurality of carriers, with data for a higher priority carrier having higher priority than data for a lower priority carrier.
32. The apparatus of claim 29, wherein the at least one carrier comprises a plurality of carriers, wherein the data to transmit comprises data of a plurality of data types, the apparatus further comprising: means for allocating available transmit power to the data to transmit based on priorities of the plurality of data types and priorities of the plurality of carriers.
33. The apparatus of claim 29, wherein the at least one carrier comprises a plurality of carriers, the apparatus comprising: means for allocating transmit power to data for each carrier based on required transmit power for the data and a scaling factor for the carrier.
34. An apparatus for wireless communication, comprising: at least one processor configured to obtain data to transmit on at least one carrier for uplink at a user equipment (UE), to determine that the UE is power limited for transmission on the at least one carrier, and to prioritize the data to transmit based on at least one criterion in response to the UE being power limited.
35. The apparatus of claim 34, wherein the data to transmit comprises data of a plurality of data types, and wherein the at least one processor is configured to allocate available transmit power to the data to transmit, one data type at a time, starting with a highest priority data type.
36. The apparatus of claim 34, wherein the at least one carrier comprises a plurality of carriers, and wherein the at least one processor is configured to prioritize the data to transmit based on priorities of the plurality of carriers, with data for a higher priority carrier having higher priority than data for a lower priority carrier.
37. The apparatus of claim 34, wherein the at least one carrier comprises a plurality of carriers, wherein the data to transmit comprises data of a plurality of data types, and wherein the at least one processor is configured to allocate available transmit power to the data to transmit based on priorities of the plurality of data types and priorities of the plurality of carriers.
38. The apparatus of claim 34, wherein the at least one carrier comprises a plurality of carriers, and wherein the at least one processor is configured to allocate transmit power to data for each carrier based on required transmit power for the data and a scaling factor for the carrier.
39. A computer program product, comprising: a computer-readable medium comprising: code for causing at least one computer to obtain data to transmit on at least one carrier for uplink at a user equipment (UE), code for causing the at least one computer to determine that the UE is power limited for transmission on the at least one carrier, and code for causing the at least one computer to prioritize the data to transmit based on at least one criterion in response to the UE being power limited.
40. A method for wireless communication, comprising: receiving an uplink transmission on at least one carrier from a user equipment (UE), the UE being power limited and prioritizing data sent in the uplink transmission based on at least one criterion; and processing the received uplink transmission to recover the data sent in the uplink transmission.
41. The method of claim 40, wherein the data sent in the uplink transmission comprises data of a plurality of data types and is prioritized based on priorities of the plurality of data types.
42. The method of claim 41, wherein the at least one carrier comprises a plurality of carriers, and wherein data of each data type is prioritized based on priorities of the plurality of carriers.
43. The method of claim 40, wherein the at least one carrier comprises a plurality of carriers, and wherein the data sent in the uplink transmission is prioritized based on priorities of the plurality of carriers.
44. The method of claim 43, further comprising: adjusting transmit power of the UE on each of the plurality of carriers to obtain a target received signal quality for the UE on the carrier.
45. The method of claim 43 , further comprising : sending signaling conveying the priorities of the plurality of carriers.
46. An apparatus for wireless communication, comprising: means for receiving an uplink transmission on at least one carrier from a user equipment (UE), the UE being power limited and prioritizing data sent in the uplink transmission based on at least one criterion; and means for processing the received uplink transmission to recover the data sent in the uplink transmission.
47. The apparatus of claim 46, wherein the data sent in the uplink transmission comprises data of a plurality of data types and is prioritized based on priorities of the plurality of data types.
48. The apparatus of claim 46, wherein the at least one carrier comprises a plurality of carriers, and wherein the data sent in the uplink transmission is prioritized based on priorities of the plurality of carriers.']
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SUMMARY
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.