Uplink power control using a received reference signal

• US 9,572,111 B2
• Filed: 09/11/2015
• Issued: 02/14/2017
• 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:
  US14/851,097
• Publication Number:
  US 20160007297A1
• Time in Patent Office: 522 Days
• US Class Current: 1/1
• 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

In a wireless network control information may be provided with configuration information for an uplink control channel and a margin associated with the uplink control channel. A signal including an adaptive modulation and coding report may be sent over the uplink control channel in a time interval including a time slot. The transmission power level of the signal may be derived from the margin or a measured pathloss.

Claims

1. A user equipment (UE) comprising:

a receiver configured to receive control information on a downlink channel from a base station, wherein the control information includes configuration information for an uplink control channel and at least one margin associated with the uplink control channel;

a transmitter configured to transmit a signal including an adaptive modulation and coding report over the uplink control channel in a time interval including at least one time slot; and

wherein a transmission power level of the signal is derived by the UE from the at least one margin and a measured pathloss.

2. The UE of claim 1, wherein the transmission power level is derived by adding the at least one margin to a value derived from the measured pathloss.

3. The UE of claim 1, wherein the signal further includes hybrid automatic repeat request control information.

4. A method performed by a user equipment (UE), the method comprising:

receiving, by the UE, control information on a downlink channel from a base station, wherein the control information includes configuration information for an uplink control channel and at least one margin associated with the uplink control channel;

transmitting, by the UE, a signal including an adaptive modulation and coding report over the uplink control channel in a time interval including at least one time slot; and

wherein a transmission power level of the signal is derived by the UE from the at least one margin and a measured pathloss.

5. The method of claim 4, wherein the transmission power level is derived by adding the at least one margin to a value derived from the measured pathloss.

6. The method of claim 4, wherein the signal further includes hybrid automatic repeat request control information.

7. A base station comprising:

a transmitter configured to transmit control information on a downlink channel to a user equipment (UE), wherein the control information includes configuration information for an uplink control channel and at least one margin associated with the uplink control channel;

a receiver configured to receive a signal, from the UE, including an adaptive modulation and coding report over the uplink control channel in a time interval including at least one time slot; and

wherein a transmission power level of the signal is derived at the UE from the at least one margin and a measured pathloss.

8. The base station of claim 7, wherein the signal further includes hybrid automatic repeat request control information.