Method and apparatus for improving device to device (D2D) communication in a wireless communication system
First Claim
1. A method for improving device to device (D2D) communication, the method comprising:
- communicating, by a user equipment (UE), with a device via the D2D communication;
triggering, by the UE, a first power headroom report (PHR) to indicate a power status of the D2D communication;
triggering and transmitting, by the UE, a first Scheduling Request (SR) to ask for radio resources from a network for scheduling to transmit the first PHR because the UE has no available resources to transmit the first PHR, wherein the first SR is triggered because there is no grant for the first PHR triggered for the D2D communication; and
triggering, by the UE, a second PHR to indicate a power status of a transmission path from the UE to the network and not triggering and transmitting a second SR to ask for radio resources from the network for scheduling because the UE has no available resource to transmit the second PHR.
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Abstract
Methods and apparatuses for improving device to device (D2D) communication are disclosed herein. One method includes communicating, by a user equipment (UE), with a device via the D2D communication. The method further includes triggering, by the UE, a first power headroom report (PHR) to indicate a power status of the D2D. The method also provides for triggering and transmitting, by the UE, a Scheduling Request (SR) to ask for radio resources from a network for scheduling if the UE has no available resources to transmit the first PHR. The method further includes triggering, by the UE, a second PHR to indicate a power status of a transmission path from the UE to the network and not triggering and transmitting the SR to ask for radio resources from the network for scheduling if the UE has no available resource to transmit the second PHR.
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Citations
38 Claims
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1. A method for improving device to device (D2D) communication, the method comprising:
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communicating, by a user equipment (UE), with a device via the D2D communication; triggering, by the UE, a first power headroom report (PHR) to indicate a power status of the D2D communication; triggering and transmitting, by the UE, a first Scheduling Request (SR) to ask for radio resources from a network for scheduling to transmit the first PHR because the UE has no available resources to transmit the first PHR, wherein the first SR is triggered because there is no grant for the first PHR triggered for the D2D communication; and triggering, by the UE, a second PHR to indicate a power status of a transmission path from the UE to the network and not triggering and transmitting a second SR to ask for radio resources from the network for scheduling because the UE has no available resource to transmit the second PHR. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A communication device for improving device to device (D2D) communication, the communication device comprising:
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a control circuit; a processor installed in the control circuit; a memory installed in the control circuit and operatively coupled to the processor; wherein the processor is configured to execute a program code stored in memory to enable the UE to; communicate with a device via the D2D communication; trigger a first power headroom report (PHR) to indicate a power status of the D2D; trigger and transmit a first Scheduling Request (SR) to ask for radio resources from a network for scheduling to transmit the first PHR if the UE has no available resources to transmit the first PHR, wherein the first SR is triggered even if there is no grant for the first PHR triggered for the D2D communication; and trigger a second PHR to indicate a power status of a transmission path from the UE to the network and not trigger and transmit a second SR to ask for radio resources from the network for scheduling if the UE has no available resource to transmit the second PHR. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification