# US 2014/0194136 A1 · Uplink power control using received reference signal

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- Number: US 2014/0194136 A1
- Document ID: US20140194136A1
- Status: Published application
- Kind: A1
- Application number: 14/209,193
- Filed: 2014-03-13
- Published: 2014-07-10
- Earliest claimed: 2001-05-14
- Assignees: InterDigital Technology Corporation
- Applicants: InterDigital Technology Corporation
- Inventors: Stephen E. Terry; Stephen G. Dick; James M. Miller; Ariela Zeira; Eldad M. Zeira
- Web page: https://patentgrep.com/patent/US20140194136A1

## CPC

- H04W 52/146: {Uplink power control}
- H04L 5/1469: {using time-sharing}
- H04W 52/228: {using past power values or information}
- H04W 52/24: using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W 52/241: {taking into account channel quality metrics, e.g. SIR, SNR, CIR or Eb/lo}
- H04W 52/242: {taking into account path loss}
- H04W 52/26: using transmission rate or quality of service QoS [Quality of Service]
- H04W 72/542: using measured or perceived quality
- H04W 52/243: {taking into account interferences}
- H04W 52/246: {where the output power of a terminal is based on a path parameter calculated in said terminal}
- H04W 52/247: {where the output power of a terminal is based on a path parameter sent by another terminal}
- H04W 88/02: Terminal devices
- H04W 88/08: Access point devices
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

A user equipment (UE) includes circuitry configured to receive control information on a downlink control channel from a base station. The control information indicates an allocation of an uplink channel and the control information is sent in response to the base station determining that the UE is to send an adaptive modulation and coding report. The circuitry is further configured in response to the control information to transmit a communication in the allocated uplink channel in a time interval including at least one time slot. The communication includes an adaptive modulation and coding report, and a transmission power level of the communication is derived from the control information and a pathloss measured by the UE.

## Claims

### Claim 1

A wireless communication system including a user equipment (UE) and a base station, the system comprising:
the UE comprising:
circuitry configured to transmit a first communication over an uplink channel; and
circuitry configured to receive control information on a downlink control channel from a base station in response to the first communication; wherein the control information indicates an allocation of an uplink channel and a quality margin determined from the first communication;
wherein the circuitry is further configured in response to receiving the control information to transmit a second communication in the allocated uplink channel in a time interval including at least one time slot; wherein the second communication includes an adaptive modulation and coding report; wherein a transmission power level of the second communication is derived from the control information including the quality margin and a pathloss measured by the UE; and
the base station comprising:
circuitry configured to receive the first communication signal over an uplink channel from the UE;
circuitry configured to measure a channel quality of the uplink channel in response to the received first communication signal;
circuitry configured to provide the quality margin derived from the first communication signal; and
circuitry configured to transmit the allocation of an uplink channel and the quality margin over a downlink control channel to the UE; and
wherein the circuitry configured to receive the first communication is further configured to receive the second communication from the UE in at least one time slot in the allocated uplink channel in response to the allocation of the uplink channel and the quality margin; wherein the second communication includes the adaptive modulation and coding report at the transmission power level derived from the quality margin.

### Claim 2 (depends on 1)

The UE of claim 1 wherein the communication further includes hybrid automatic repeat request (HARQ) information.

### Claim 3

An integrated circuit (IC), implemented in a user equipment (UE), the IC comprising:
circuitry configured to output a first communication for transmission over an uplink channel; and
circuitry configured to receive, as an input, control information on a downlink control channel from a base station in response to the first communication; wherein the control information indicates an allocation of an uplink channel and a quality margin determined from the first communication;
wherein the circuitry is further configured in response to receiving the control information to output a second communication for transmission in the allocated uplink channel in a time interval including at least one time slot; wherein the second communication includes an adaptive modulation and coding report; wherein a transmission power level of the second communication is derived from the control information including the quality margin and a pathloss measured by the UE.

### Claim 4

An integrated circuit (IC), implemented in a base station, the IC comprising:
circuitry configured to receive, as an input, a first communication signal over an uplink channel from a user equipment (UE);
circuitry configured to measure a channel quality of the uplink channel in response to the received first communication signal;
circuitry configured to provide a quality margin derived from the first communication signal; and
circuitry configured to output for transmission an allocation of an uplink channel and the quality margin over a downlink control channel to the UE; and
wherein the circuitry configured to receive, as an input, the first communication is further configured to receive, as an input, a second communication from the UE in at least one time slot in the allocated uplink channel in response to the allocation of the uplink channel and the quality margin; wherein the second communication includes an adaptive modulation and coding report at a transmission power level derived from the quality margin.
