Method and apparatus for scheduling data transmission on multiple carriers
First Claim
1. A method of scheduling data transmission in a wireless communication system, comprising:
- receiving requested power headrooms for a plurality of carriers from a user equipment (UE), one requested power headroom for each carrier, each requested power headroom indicative of transmit power usable by the UE for transmission on an associated carrier;
redistributing the requested power headrooms across the plurality of carriers to obtain redistributed power headrooms for the plurality of carriers; and
scheduling the UE for data transmission on uplink based on the redistributed power headrooms for the plurality of carriers.
1 Assignment
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Accused Products
Abstract
Techniques for scheduling data transmission on multiple carriers in a wireless communication system are described. In one design, a scheduler may receive requested power headrooms for multiple carriers from a user equipment (UE), one requested power headroom for each carrier. Each requested power headroom may be indicative of transmit power usable by the UE for transmission on an associated carrier. The scheduler may also receive queue information indicative of data to transmit by the UE. The scheduler may redistribute the requested power headrooms across the multiple carriers (e.g., based on water filling or greedy filling) to obtain redistributed power headrooms for the multiple carriers. The scheduler may schedule the UE for data transmission on the uplink based on the redistributed power headrooms and the queue information. The scheduler may obtain and send at least one granted power headroom for at least one carrier to the UE.
34 Citations
43 Claims
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1. A method of scheduling data transmission in a wireless communication system, comprising:
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receiving requested power headrooms for a plurality of carriers from a user equipment (UE), one requested power headroom for each carrier, each requested power headroom indicative of transmit power usable by the UE for transmission on an associated carrier; redistributing the requested power headrooms across the plurality of carriers to obtain redistributed power headrooms for the plurality of carriers; and scheduling the UE for data transmission on uplink based on the redistributed power headrooms for the plurality of carriers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for scheduling data transmission in a wireless communication system, comprising:
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means for receiving requested power headrooms for a plurality of carriers from a user equipment (UE), one requested power headroom for each carrier, each requested power headroom indicative of transmit power usable by the UE for transmission on an associated carrier; means for redistributing the requested power headrooms across the plurality of carriers to obtain redistributed power headrooms for the plurality of carriers; and means for scheduling the UE for data transmission on uplink based on the redistributed power headrooms for the plurality of carriers. - View Dependent Claims (20, 21, 22)
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23. An apparatus for scheduling data transmission in a wireless communication system, comprising:
at least one processor configured to receive requested power headrooms for a plurality of carriers from a user equipment (UE), one requested power headroom for each carrier, each requested power headroom indicative of transmit power usable by the UE for transmission on an associated carrier, to redistribute the requested power headrooms across the plurality of carriers to obtain redistributed power headrooms for the plurality of carriers, and to schedule the UE for data transmission on uplink based on the redistributed power headrooms for the plurality of carriers. - View Dependent Claims (24, 25, 26)
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27. A computer program product, comprising:
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a non-transitory computer-readable medium, comprising; code for causing at least one computer to receive requested power headrooms for a plurality of carriers from a user equipment (UE), one requested power headroom for each carrier, each requested power headroom indicative of transmit power usable by the UE for transmission on an associated carrier, code for causing the at least one computer to redistribute the requested power headrooms across the plurality of carriers to obtain redistributed power headrooms for the plurality of carriers, and code for causing the at least one computer to schedule the UE for data transmission on uplink based on the redistributed power headrooms for the plurality of carriers.
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28. A method for wireless communication, comprising:
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determining requested power headrooms for a plurality of carriers, based on one requested power headroom for each carrier, each requested power headroom indicative of transmit power usable by a user equipment (UE) for transmission on an associated carrier, comprising; distributing a maximum transmit power for the UE evenly across the plurality of carries to obtain an allocated transmit power for each of a plurality of carriers, and determining a requested power headroom each of the plurality of carriers based on the allocated transmit power for the carrier; determining queue information indicative of data to transmit by the UE, the queue information indicating at least an amount of data to send for the highest priority logical channel associated with the UE; and sending the requested power headrooms for the plurality of carriers and the queue information. - View Dependent Claims (29, 30, 31, 32)
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33. An apparatus for wireless communication, comprising:
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means for determining requested power headrooms for a plurality of carriers, based on one requested power headroom for each carrier, each requested power headroom indicative of transmit power usable by a user equipment (UE) for transmission on an associated carrier, comprising; means for distributing a maximum transmit power for the UE evenly across the plurality of carriers to obtain an allocated transmit power for each of the plurality of carriers, and means for determining a requested power headroom for each of the plurality of carriers based on the allocated transmit power for the carrier; means for determining queue information indicative of data to transmit by the UE, the queue information indicating at least an amount of data to send for the highest priority logical channel associated with the UE; and means for sending the requested power headrooms for the plurality of carriers and the queue information. - View Dependent Claims (34, 35)
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36. A method of scheduling data transmission in a wireless communication system, comprising:
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determining total available transmit power for data transmission on a plurality of carriers by a user equipment (UE); distributing the total available transmit power unevenly across the plurality of carriers to obtain an available transmit power for each of the plurality of carriers; and scheduling the UE for data transmission on an uplink based on the available transmit power for each of the plurality of carriers, comprising; allocating a granted transmit power for each of at least one carrier based on the available transmit power for the carrier, determining a granted power headroom for each of the at least one carrier based on the granted transmit power for the carrier, and sending information indicative of the granted power headroom for each of the at least one carrier to the UE. - View Dependent Claims (37, 38, 39)
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40. An apparatus for scheduling data transmission in a wireless communication system, comprising:
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means for determining total available transmit power for data transmission on a plurality of carriers by a user equipment (UE); means for distributing the total available transmit power unevenly across the plurality of carriers to obtain an available transmit power for each of the plurality of carriers; and means for scheduling the UE for data transmission on an uplink based on the available transmit power for each of the plurality of carriers, comprising; means for allocating a granted transmit power for each of at least one carrier based on the available transmit power for the carrier, means for determining a granted power headroom for each of the at least one carrier based on the granted transmit power for the carrier, and means for sending information indicative of the granted power headroom for each of the at least one carrier to the UE. - View Dependent Claims (41, 42, 43)
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Specification