Uplink power control using received power control information

• US 9,832,735 B2
• Filed: 02/09/2017
• Issued: 11/28/2017
• Est. Priority Date: 05/14/2001
• Status: Expired due to Term

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Terry, Stephen E., Dick, Stephen G., Miller, James M., Zeira, Ariela, Zeira, Eldad M.
• Primary Examiner(s): Safaipour, Bobbak
• Application Number:
  US15/428,836
• Publication Number:
  US 20170164297A1
• Time in Patent Office: 292 Days
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/228 using past power values or information
• 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 52/246 where the output power of a terminal is based on a path parameter calculated in said terminal
• CPC Class Codes: H04W 52/247 where the output power of a terminal is based on a path parameter sent by another terminal
• CPC Class Codes: H04W 52/26 using transmission rate or quality of service QoS [Quality of Service]
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

An uplink signal may be transmitted by a user equipment (UE) in a time interval using an uplink control channel. The uplink signal may include hybrid automatic repeat request (H-ARQ) control information related to received downlink data. If the UE determines that information indicating a coding and modulation is to be transmitted at a same time interval as the H-ARQ control information, the uplink signal may include the information that indicates the coding and modulation.

Claims

1. A user equipment (UE) comprising:

a receiver configured to receive downlink data from a base station;

a transmitter configured to transmit, in a time interval using an uplink control channel, an uplink signal, wherein the uplink signal includes hybrid automatic repeat request (H-ARQ) control information related to the received downlink data and wherein the uplink signal includes, on a condition that information indicating a coding and modulation is to be transmitted at a same time interval as the H-ARQ control information, information that indicates the coding and modulation; and

wherein a transmission power level of the uplink signal is based on a pathloss and information that indicates a power margin, wherein the information that indicates the power margin is received from the base station.

2. The UE of claim 1, wherein the power margin is a quality margin.

3. The UE of claim 2, wherein the quality margin is derived from a signal to interference ratio target.

4. The UE of claim 1, wherein the transmitter is configured to transmit, in a different time interval, a second uplink signal using the uplink control channel with H-ARQ control information and without information that indicates a coding and modulation.

5. The UE of claim 1, wherein the receiver is further configured to receive a downlink signal produced using the information that indicates the coding and modulation.

6. The UE of claim 1, wherein the UE operates using time division duplex.

7. A method performed user equipment (UE) comprising:

receiving, by the UE, downlink data from a base station;

transmitting, by the UE in a time interval using an uplink control channel, an uplink signal, wherein the uplink signal includes hybrid automatic repeat request (H-ARQ) control information related to the received downlink data and wherein the uplink signal includes, on a condition that information indicating a coding and modulation is to be transmitted at a same time interval as the H-ARQ control information, information that indicates the coding and modulation; and

wherein a transmission power level of the uplink signal is based on a pathloss and information that indicates a power margin of the uplink signal, wherein the information that indicates the power margin is received from the base station.

8. The method of claim 7, wherein the power margin is a quality margin.

9. The method of claim 8, wherein the quality margin is derived from a signal to interference ratio target.

10. The method of claim 7 further comprising transmitting, by the UE in a different time interval, a second uplink signal using an uplink control channel with H-ARQ control information and without information that indicates a coding and modulation.

11. The method of claim 7 further comprising receiving, by a UE, a downlink signal produced using the information that indicates the coding and modulation.

12. The method of claim 7, wherein the UE operates using time division duplex.