Power control in a wireless network

• US 10,952,153 B2
• Filed: 05/13/2019
• Issued: 03/16/2021
• Est. Priority Date: 08/12/2004
• Status: Active Grant

• Current Assignee: Intellectual Ventures II LLC (Intellectual Ventures LLC)
• Original Assignee: Intellectual Ventures II LLC (Intellectual Ventures LLC)
• Inventors: Anderson, Nicholas W.
• Primary Examiner(s): Rego, Dominic E
• Application Number:
  US16/410,614
• Publication Number:
  US 20200107271A1
• Time in Patent Office: 673 Days
• CPC Class Codes: H04W 52/06 TPC algorithms
• CPC Class Codes: H04W 52/08 Closed loop power control
• CPC Class Codes: H04W 52/10 Open loop power control
• CPC Class Codes: H04W 52/12 Outer and inner loops
• CPC Class Codes: H04W 52/221 using past power control commands
• 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 72/0473 the resource being transmission power
• CPC Class Codes: H04W 72/1268 of uplink data flows
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A network device may select a value of a multi-level transmit power control (TPC) command from a plurality of pre-defined values. The network device may transmit on a single channel an allocation of an uplink resource and the multi-level TPC command.

Claims

1. A user equipment (UE) comprising:

a transmitter;

a receiver; and

a processor operatively coupled to the transmitter and the receiver,

wherein the processor is configured to cause;

the receiver to receive, from a network device, an indication that transmit power control (TPC) command accumulation is enabled,

the receiver to receive, from the network device, on a single physical channel, scheduling information and power control information that includes a multi-level TPC command, and

the transmitter to transmit, to the network device, an uplink signal based on the received scheduling information and the multi-level TPC command.

2. The UE of claim 1, wherein the multi-level TPC command includes a value selected from a plurality of pre-defined values.

3. The UE of claim 1, wherein the transmitter is further configured to transmit the uplink signal on an uplink shared channel.

4. The UE of claim 1, wherein the network device is one of a Node-B or a base station.

5. The UE of claim 1, wherein the multi-level TPC command includes a set of values that includes at least two values up or at least two values down.

6. The UE of claim 1, wherein the network device generates the multi-level TPC command by comparing a measured signal-to-noise-plus-interference ratio (SNIR) with an SNIR target value.

7. The UE of claim 6, wherein the network device generates the SNIR target value based on an error metric of the uplink signal.

8. The UE of claim 1, wherein an interference measurement table stored in the network device is updated based on an uplink interference value measured from the uplink signal.

9. The UE of claim 8, wherein the processor is further configured to cause the receiver to receive interference measurements from the interference measurement table stored in the network device.

10. The UE of claim 1, wherein the processor is further configured to cause the receiver to receive an indication of a beacon power level from the network device.

11. A method performed by a user equipment (UE) having a transmitter and a receiver, the method comprising:

receiving, by the UE, an indication from a network device that transmit power control (TPC) command accumulation is enabled;

receiving, by the UE on a single physical channel from the network device, scheduling information and power control information that includes a multi-level TPC command; and

transmitting, by the UE to the network device, an uplink signal based on the received scheduling information and the multi-level TPC command.

12. The method of claim 11, wherein the multi-level TPC command includes a value selected from a plurality of pre-defined values.

13. The method of claim 11, wherein transmitting the uplink signal includes transmitting the uplink signal on an uplink shared channel.

14. The method of claim 11, wherein the network device is one of a Node-B or a base station.

15. The method of claim 11, wherein the multi-level TPC command includes a set of values that includes at least two values up or at least two values down.

16. The method of claim 11, wherein the network device generates the multi-level TPC command by comparing a measured signal-to-noise-plus-interference ratio (SNIR) with an SNIR target value.

17. The method of claim 16, wherein the network device generates the SNIR target value based on an error metric of the uplink signal.

18. The method of claim 11, wherein an interference measurement table in the network device is updated based on an uplink interference value measured from the uplink signal.

19. The method of claim 18, further comprising:

receiving, by the UE, interference measurements from the interference measurement table stored in the network device.

20. The method of claim 11, further comprising:

receiving, by the UE, an indication of a beacon power level from the network device.