Power control

• US 8,559,998 B2
• Filed: 11/04/2008
• Issued: 10/15/2013
• Est. Priority Date: 11/05/2007
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Mindspeed Technologies UK Limited (MACOM Technology Solutions Holdings, Inc.)
• Inventors: Smart, Christopher Brian
• Primary Examiner(s): Lee, John J
• Application Number:
  US12/264,531
• Publication Number:
  US 20090149211A1
• Time in Patent Office: 1,806 Days
• Field of Search: 455/444, 455/449, 455/446, 455/522, 455/69, 455/67.11, 455/63.1, 455/501, 455/452.1, 455/452.2, 370/328, 370/338
• US Class Current: 455/522
• CPC Class Codes: H04W 52/06 TPC algorithms
• CPC Class Codes: H04W 52/24 using SIR [Signal to Interference Ratio] or other wireless path parameters
• CPC Class Codes: H04W 52/265 taking into account the quality of service QoS

Abstract

There is provided a femtocell device for use in connecting a mobile terminal to a communication network, the femtocell device comprising means for implementing a power control procedure in which a target value for a first characteristic of transmissions received from the mobile terminal is set and adjusted based on a quality of service criteria for the transmissions; and wherein the means for implementing the power control procedure operates in a physical layer of the femtocell device.

Claims

1. A femtocell device for use in connecting a mobile terminal to a communication network, the femtocell device comprising means for implementing a power control procedure in which a target value for a first characteristic of transmissions received from the mobile terminal is set and adjusted based on a quality of service criteria for the transmissions;

and

wherein the means for implementing the power control procedure operates in a physical layer of the femtocell device and the means for implementing the power control procedure operating in the physical layer of the femtocell device is adapted to received the quality of service criteria from a higher layer of the femtocell device.

2. A femtocell device as claimed in claim 1, wherein the means for implementing comprises a scheduler block that sets and adjusts the target value for the first characteristic in order for the transmissions received from the mobile terminal to satisfy the quality of service criteria.

3. A femtocell device as claimed in claim 2, wherein the scheduler block is adapted to determine whether the quality of service criteria is satisfied by measuring one or more quality of service parameters from the received transmissions.

4. A femtocell device as claimed in claim 3, wherein the scheduler block is adapted to adjust the target value for the first characteristic if the quality of service criteria is not satisfied.

5. A femtocell device as claimed in claim 2, wherein the scheduler block is further adapted to measure one or more characteristics of the uplink between the mobile terminal and the femtocell device.

6. A femtocell device as claimed in claim 5, wherein the scheduler block is adapted to measure one or more characteristics of one or more transport channels in the uplink.

7. A femtocell device as claimed in claim 6, wherein the scheduler block is adapted to measure a bit error rate of the one or more transport channels in the uplink.

8. A femtocell device as claimed in claim 5, wherein the scheduler block is adapted to measure one or more characteristics of a physical channel in the uplink.

9. A femtocell device as claimed in claim 8, wherein the scheduler block is adapted to measure a signal-to-interference ratio for the physical channel in the uplink.

10. A femtocell device as claimed in claim 5, wherein the scheduler block is adapted to use the measurements of the one or more characteristics of the uplink between the mobile terminal and the femtocell device to adjust the target value for the first characteristic of the transmissions received from the user equipment.

11. A femtocell device as claimed in claim 1, wherein the one or more quality of service parameters or quality of service criteria comprises a frame error rate, cyclic redundancy check pass/fail indication and/or transport channel bit error rate.

12. A femtocell device as claimed in claim 1, wherein the means for implementing further comprises a first processing block for measuring a value for the first characteristic from the received transmissions.

13. A femtocell device as claimed in claim 12, wherein the first processing block is further adapted to compare the measured value for the first characteristic with the target value, and to generate a power control signal from the result of the comparison for transmission to the mobile terminal.

14. A femtocell device as claimed in claim 13, wherein the power control signal is a Transmit Power Control signal.

15. A femtocell device as claimed in claim 1, wherein the first characteristic is a signal-to-interference ratio.

16. A femtocell device as claimed in claim 1, wherein the femtocell device is for connecting the mobile terminal to a WCDMA network.

17. A femtocell device as claimed in claim 1, wherein the femtocell device is for connecting the mobile terminal to a TD-SCDMA network.

18. A femtocell device as claimed in claim 1, wherein a higher layer in the femtocell device is adapted to provide the quality of service criteria to the physical layer.

19. A femtocell device as claimed in claim 18, wherein the higher layer is adapted to provide the quality of service criteria to the physical layer when a radio link between the user equipment and femtocell device is set up or reconfigured.

20. A femtocell device as claimed in claim 19, wherein the higher layer is adapted to include the quality of service criteria in a Radio Link Setup and/or Radio Link Reconfiguration signal sent to the physical layer.

21. A power control procedure for use in a femtocell device, the femtocell device being used to connect a mobile terminal to a communication network, the procedure comprising in a physical layer of the femtocell device, where the power control procedure operates, setting and adjusting a target value for a first characteristic of transmissions received from the mobile terminal based on a quality of service criteria for the transmissions, wherein the quality of service criteria is received from a higher layer in the femtocell device.

22. A communication device for use in connecting a mobile terminal to a communication network, the communication device comprising a femtocell configured to perform a power control procedure in which a target value for a first characteristic of transmissions received from the mobile terminal is set and adjusted based on a quality of service criteria for the transmissions and the power control procedure operates in a physical layer of the femtocell device, wherein the power control procedure operates in the physical layer of the femtocell device and is adapted to received the quality of service criteria from a higher layer of the femtocell device.

23. The device of claim 22, wherein the femtocell comprises an uplink chip-rate processing block, an uplink symbol-rate processing block and an uplink scheduler block.