Transmission power determination method, communication device and program

• US 9,820,168 B2
• Filed: 07/28/2015
• Issued: 11/14/2017
• Est. Priority Date: 07/31/2009
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Sawai, Ryo, Kimura, Ryota
• Primary Examiner(s): Trinh, Tan H
• Application Number:
  US14/810,825
• Publication Number:
  US 20150334664A1
• Time in Patent Office: 840 Days
• Field of Search: 455522, 455 69, 4551851, 455 677, 455 62, 455501, 455445, 455422, 455 301, 455423, 455451, 455452, 4554522, 4554521, 4554561, 455464, 455 9, 455 6711, 455 6716, 4551151, 455135, 455 631, 455 70, 455 77, 455509, 370315, 370329, 370252
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 52/143 Downlink power control
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/16 Deriving transmission power values from another channel
• CPC Class Codes: H04W 52/24 using SIR [Signal to Interference Ratio] or other wireless path parameters
• CPC Class Codes: H04W 52/241 taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
• CPC Class Codes: H04W 52/242 taking into account path loss
• CPC Class Codes: H04W 52/243 taking into account interferences
• CPC Class Codes: H04W 52/245 taking into account received signal strength
• CPC Class Codes: H04W 52/46 in multi hop networks, e.g. wireless relay networks

Abstract

An electronic device comprising circuitry that controls transmitting signals through a first communication link toward a base station or a second communication link toward a mobile station. The second communication link uses an uplink resource of the first communication link. The circuity determines transmission power for the second communication link based on a first parameter and a second parameter. The first parameter indicates a signal level, a power level, or a noise level in the first communication link. The second parameter corresponds to path loss information for the first communication link.

Claims

1. An electronic device comprising:

circuitry configured to;

control transmitting signals through a first communication link toward a base station or a second communication link toward a mobile station, the second communication link-being a device-to-device communication link that makes use of an uplink resource of the first communication link; and

determine transmission power for the second communication link based on a first parameter and a second parameter,

wherein

the first parameter indicates at least one level selected from the group consisting of a signal level and a power level in the first communication link,

the second parameter corresponds to path loss information for the first communication link, and

the transmission power for the second communication link is further determined based on a third parameter related to bandwidth information.

2. The electronic device of claim 1, wherein the uplink resource comprises at least one frequency multiplexed uplink resource.

3. The electronic device of claim 1, wherein the first parameter is received from the base station.

4. The electronic device of claim 1, wherein the path loss information comprises a path loss level from a mobile device to a base station in the first communication link.

5. A method comprising:

controlling transmitting signals through a first communication link toward a base station or a second communication link toward a mobile station, the second communication link-being a device-to-device communication link that makes use of an uplink resource of the first communication link; and

determining transmission power for the second communication link based on a first parameter and a second parameter,

wherein

the first parameter indicates at least one level selected from the group consisting of a signal level and a power level in the first communication link,

the second parameter corresponds to path loss information for the first communication link, and

the transmission power for the second communication link is further determined based on a third parameter related to bandwidth information.

6. The method of claim 5, wherein the uplink resource comprises at least one frequency multiplexed uplink resource.

7. The method of claim 5, wherein the first parameter is received from the base station.

8. The method of claim 5, wherein the path loss information comprises a path loss level from a mobile device to a base station in the first communication link.

9. A non-transitory computer readable medium storing a computer executable instructions which, when executed on at least one processor of a device, cause the device to perform a method, the method comprising:

controlling transmitting signals through a first communication link toward a base station or a second communication link toward a mobile station, the second communication link being a device-to-device communication link that makes use of an uplink resource of the first communication link; and

determining transmission power for the second communication link based on a first parameter and a second parameter,

wherein

the first parameter indicates at least one level selected from the group consisting of a signal level and a power level in the first communication link,

the second parameter corresponds to path loss information for the first communication link, and

the transmission power for the second communication link is further determined based on a third parameter related to bandwidth information.

10. The non-transitory computer readable medium of claim 9, wherein the uplink resource comprises at least one frequency multiplexed uplink resource.

11. The non-transitory computer readable medium of claim 9, wherein the first parameter is received from the base station.

12. The non-transitory computer readable medium of claim 9, wherein the path loss information comprises a path loss level from a mobile device to a base station in the first communication link.