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US 2017/0367057 A1Published application
Apparatus and method for controlling transmission power in wireless communication system
AssigneeInnovative Technology Lab Co., Ltd.
InventorDong Hyun PARK
Life of this patent
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Abstract
Exemplary embodiments provide a method and apparatus for controlling transmit power for a device-to-device (D2D) communication between user equipments (UEs), the method including: searching for a peer UE; determining transmit power of a D2D communication signal to be transmitted to the peer UE; and transmitting the D2D communication signal to the peer UE based on the determined transmit power.
Claims14
A method of controlling transmit power for a direct communication between two mobile devices, the method comprising:
- receiving, at a first mobile device, a radio resource control (RRC) message transmitted from an evolved NodeB (eNB), the RRC message comprising power information for the first mobile device, the power information comprising maximum transmit power for a first direct transmission to a second mobile device through a first serving cell resource and maximum transmit power for an uplink transmission to the eNB through a second serving cell resource, wherein the uplink transmission to the eNB through the second serving cell resource comprises a Physical Uplink Shared Channel (PUSCH) transmission;
- determining whether the first direct transmission to the second mobile device through the first serving cell resource and a second direct transmission overlap in a subframe wherein the first direct transmission is prioritized over the second direct transmission;
- determining, based on the priority of the first direct transmission, the first direct transmission in the subframe i;
- determining whether the first direct transmission through the first serving cell resource and the PUSCH transmission to the eNB through the second serving cell resource overlap in the subframe i;
- based on allocation of transmit power of the overlapped PUSCH transmission to the eNB through the second serving cell resource in the subframe i, adjusting transmit power of the first direct transmission through the first serving cell resource in the subframe i, wherein the adjusted transmit power of the first direct transmission is greater than zero;
- and
- performing the first direct transmission through the first serving cell resource and the PUSCH transmission to the eNB through the second serving cell resource in the subframe
- wherein the transmit power of the overlapped PUSCH transmission to the eNB through the second serving cell resource in the subframe i is prioritized over the transmit power of the first direct transmission through the first serving cell resource in the subframe i.
5 more elements
A first mobile device to control transmit power for a direct transmission to a second mobile device, the first mobile device comprising:
- a transceiver to receive a radio resource control (RRC) message transmitted from an evolved NodeB (eNB), the RRC message comprising power information for the first mobile device, the power information comprising maximum transmit power for a first direct transmission to the second mobile device through a first serving cell resource and maximum transmit power for an uplink transmission to the eNB through a second serving cell resource, wherein the uplink transmission to the eNB through the second serving cell resource comprises a Physical Uplink Shared Channel (PUSCH) transmission;
- and
- a processor configured to determine whether the first direct transmission to the second mobile device through the first serving cell resource and a second direct transmission overlap in a subframe i, wherein the first direct transmission is prioritized over the second direct transmission,
- wherein the processor determines, based on the priority of the first direct transmission, the first direct transmission in the subframe
- wherein the processor determines whether the first direct transmission through the first serving cell resource and the PUSCH transmission to the eNB through the second serving cell resource overlap in the subframe i,
- wherein the processor adjusts transmit power of the first direct transmission through the first serving cell resource in the subframe i based on allocation of transmit power of the overlapped PUSCH transmission to the eNB through the second serving cell resource in the subframe i, wherein the adjusted transmit power of the first direct transmission is greater than zero,
- wherein the transceiver performs the first direct transmission through the first serving cell resource and the PUSCH transmission to the eNB through the second serving cell resource in the subframe i, and
- wherein the transmit power of the overlapped PUSCH transmission to the eNB through the second serving cell resource in the subframe i is prioritized over the transmit power of the first direct transmission through the first serving cell resource in the subframe i.
5 more elements
Dependencies are inferred from the claim text.