Multiple-frame offset between neighbor cells to enhance the GERAN signaling performance when power control for signaling is in use

• US 8,948,031 B2
• Filed: 12/04/2008
• Issued: 02/03/2015
• Est. Priority Date: 08/20/2008
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Yu, Zhi-Zhong, Dhanda, Mungal Singh
• Primary Examiner(s): Park, Jung
• Assistant Examiner(s): Nguyen, Chuong M
• Application Number:
  US12/993,823
• Publication Number:
  US 20110267968A1
• Time in Patent Office: 2,252 Days
• Field of Search: 370/294, 370310-350, 370431-463, 370/498, 370/519, 455450-522
• US Class Current: 370/252
• CPC Class Codes: H04L 27/18 Phase-modulated carrier systems, i.e. using phase-shift keying H04L27/32 takes precedence
• CPC Class Codes: H04L 27/2613 Structure of the reference signals
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04W 52/20 using error rate
• CPC Class Codes: H04W 52/241 taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels

Abstract

The present patent application comprises means and instructions for improving signaling by increasing a power of at least one signaling channel if errors on the signaling channel occur, comprising tracking quality of the at least one signaling channel, determining whether the at least one signaling channel has an error rate that is above a threshold, and increasing power to the at least one signaling channel if the error rate is above the threshold.

Claims

1. A method of improving signaling, comprising:

tracking a quality of at least one signaling channel;

determining whether said at least one signaling channel has an error rate corresponding to co-channel interference that is above a threshold;

applying a frame offset to said at least one signaling channel if said error rate is above said threshold, wherein the frame offset is a time offset between communication signals of neighbor cells, and wherein the frame offset is controlled by a network; and

increasing power to said at least one signaling channel if said error rate is above said threshold, wherein the frame offset ensures that only one cell in a cluster of neighbor cells controlled by the network uses an increased power signaling channel at any time, wherein extra power is alternately applied between different Multi-User on One Slot (MUROS) users.

2. The method according to claim 1, further comprising controlling timing by time offsetting signals between neighbor cells.

3. The method according to claim 1, wherein said at least one signaling channel includes a Slow Associated Control Channel and a Fast Associated Control Channel.

4. The method according to claim 1, wherein said at least one signaling channel includes a Slow Associated Control Channel and a Fast Associated Control Channel and wherein said step of increasing power to said at least one signaling channel further comprises increasing power for two MUROS Slow Associated Control Channels, wherein said power of a first said Slow Associated Control Channel is increased on a first transmission, while power of a second Slow Associated Control Channel is increased on a second transmission.

5. The method according to claim 3, wherein said step of increasing power to said at least one signaling channel further comprises increasing power for two MUROS Slow Associated Control Channels, wherein said power of a first said Slow Associated Control Channel is increased on a first transmission, while power of a second Slow Associated Control Channel is increased on a second transmission.

6. A method of improving signaling, comprising:

tracking a quality of at least one signaling channel;

determining whether said at least one signaling channel has an error rate corresponding to co-channel interference that is above a threshold, wherein the frame offset is a time offset between communication signals of neighbor cells, and wherein the frame offset is controlled by a network; and

applying a frame offset on said at least one signaling channel, wherein the frame offset ensures that only one cell in a cluster of neighbor cells controlled by the network uses an increased power signaling channel at any time, wherein extra power is alternately applied between different Multi-User on One Slot (MUROS) users.

7. The method according to claim 6, wherein said at least one signaling channel includes a Slow Associated Control Channel and a Fast Associated Control Channel.

8. An apparatus for improving signaling, comprising:

means for tracking a quality of at least one signaling channel;

means for determining whether said at least one signaling channel has an error rate corresponding to co-channel interference that is above a threshold;

means for applying a frame offset to said at least one signaling channel if said error rate is above said threshold, wherein the frame offset is a time offset between communication signals of neighbor cells, wherein the frame offset is controlled by a network, and wherein the frame offset ensures that only one cell in a cluster of neighbor cells controlled by the network uses an increased power signaling channel at any time; and

means for increasing power to said at least one signaling channel if said error rate is above said threshold, wherein extra power is alternately applied between different Multi-User on One Slot (MUROS) users.

9. The apparatus according to claim 8, further comprising means for controlling timing by time offsetting signals between neighbor cells.

10. The apparatus according to claim 8, further comprising means for applying a frame offset to said at least one signaling channel.

11. The apparatus according to claim 8, wherein said at least one signaling channel includes a Slow Associated Control Channel and a Fast Associated Control Channel.

12. The apparatus according to claim 10, wherein said at least one signaling channel includes a Slow Associated Control Channel and a Fast Associated Control Channel and wherein said means for increasing power to said at least one signaling channel further comprises means for increasing power for two MUROS Slow Associated Control Channels, wherein said power of a first said Slow Associated Control Channel is increased on a first transmission, while power of a second Slow Associated Control Channel is increased on a second transmission.

13. The apparatus according to claim 11, wherein said means for increasing power to said at least one signaling channel further comprises means for increasing power for two MUROS Slow Associated Control Channels, wherein said power of a first said Slow Associated Control Channel is increased on a first transmission, while power of a second Slow Associated Control Channel is increased on a second transmission.

14. An apparatus for improving signaling, comprising:

means for tracking a quality of at least one signaling channel;

means for determining whether said at least one signaling channel has an error rate corresponding to co-channel interference that is above a threshold; and

means for applying a frame offset on said at least one signaling channel, wherein the frame offset is a time offset between communication signals of neighbor cells, wherein the frame offset is controlled by a network, and wherein the frame offset ensures that only one cell in a cluster of neighbor cells controlled by the network uses an increased power signaling channel at any time, wherein extra power is alternately applied between different Multi-User on One Slot (MUROS) users.

15. The apparatus according to claim 14, wherein said at least one signaling channel includes a Slow Associated Control Channel and a Fast Associated Control Channel.

16. A base station, comprising:

a controller processor;

an antenna;

a duplexer switch operably connected to said antenna;

a receiver front end operably connected to said duplexer switch;

a receiver demodulator operably connected to said receiver front end;

a channel decoder and de-interleaver operably connected to said receiver demodulator and said controller processor;

a base station controller interface operably connected to said controller processor;

a coder and interleaver operably connected to said controller processor;

a transmitter modulator operably connected to said coder and interleaver;

a transmitter front end module operably connected to said transmitter modulator and operably connected to said duplexer switch;

a data bus operably connected between said controller processor and said channel decoder and de-interleaver, said receiver demodulator, said receiver front end, said transmitter modulator and said transmitter front end; and

software stored in memory, wherein said software comprises instructions to improve signaling, comprising;

track a quality of at least one signaling channel;

determine whether said at least one signaling channel has an error rate corresponding to co-channel interference that is above a threshold;

apply a frame offset to said at least one signaling channel, wherein the frame offset is a time offset between communication signals of neighbor cells, wherein the frame offset is controlled by a network, and wherein the frame offset ensures that only one cell in a cluster of neighbor cells controlled by the network uses an increased power signaling channel at any time; and

increase power to said at least one signaling channel if said error rate is above said threshold, wherein extra power is alternately applied between different Multi-User on One Slot (MUROS) users.

17. The base station according to claim 16, further comprising an instruction to control timing by time offsetting signals between neighbor cells.

18. The base station according to claim 16, wherein said at least one signaling channel includes a Slow Associated Control Channel and a Fast Associated Control Channel.

19. The base station according to claim 16, wherein said at least one signaling channel includes a Slow Associated Control Channel and a Fast Associated Control Channel and wherein said instruction to increase power to said at least one signaling channel further comprises increasing power for two MUROS Slow Associated Control Channels, wherein said power of a first Slow Associated Control Channel is increased on a first transmission, while power of a second Slow Associated Control Channel is increased on a second transmission.

20. The base station according to claim 18, wherein said instruction to increase power to said at least one signaling channel further comprises increasing power for two MUROS Slow Associated Control Channels, wherein said power of a first Slow Associated Control Channel is increased on a first transmission, while power of a second Slow Associated Control Channel is increased on a second transmission.

21. A base station, comprising:

a controller processor;

an antenna;

a duplexer switch operably connected to said antenna;

a receiver front end operably connected to said duplexer switch;

a receiver demodulator operably connected to said receiver front end;

a channel decoder and de-interleaver operably connected to said receiver demodulator and said controller processor;

a base station controller interface operably connected to said controller processor;

a coder and interleaver operably connected to said controller processor;

a transmitter modulator operably connected to said coder and interleaver;

a transmitter front end module operably connected to said transmitter modulator and operably connected to said duplexer switch;

a data bus operably connected between said controller processor and said channel decoder and de-interleaver, said receiver demodulator, said receiver front end, said transmitter modulator 928 and said transmitter front end; and

software stored in memory, wherein said software comprises instructions to improve signaling, comprising;

track a quality of said at least one signaling channel;

determine whether said at least one signaling channel has an error rate corresponding to co-channel interference that is above a threshold, wherein the frame offset is a time offset between communication signals of neighbor cells, and wherein the frame offset is controlled by a network; and

apply a frame offset on said at least one signaling channel, wherein the frame offset ensures that only one cell in a cluster of neighbor cells controlled by the network uses an increased power signaling channel at any time, wherein extra power is alternately applied between different Multi-User on One Slot (MUROS) users.

22. The base station according to claim 21, wherein said at least one signaling channel includes a Slow Associated Control Channel and a Fast Associated Control Channel.

23. A computer program product, comprising:

a non-transitory computer-readable medium comprising;

code for causing a computer to improve signaling comprising instructions executable to;

track a quality of at least one signaling channel;

determine whether said at least one signaling channel has an error rate corresponding to co-channel interference that is above a threshold;

apply a frame offset to said at least one signaling channel if said error rate is above said threshold, wherein the frame offset is a time offset between communication signals of neighbor cells, wherein the frame offset is controlled by a network, and wherein the frame offset ensures that only one cell in a cluster of neighbor cells controlled by the network uses an increased power signaling channel at any time; and

increase power to said at least one signaling channel if said error rate is above said threshold, wherein extra power is alternately applied between different Multi-User on One Slot (MUROS) users.

24. The computer program product according to claim 23, further comprising an instruction to control timing by time offsetting signals between neighbor cells.

25. The computer program product according to claim 23, further comprising an instruction to apply a frame offset to said at least one signaling channel.

26. The computer program product according to claim 23, wherein said at least one signaling channel includes a Slow Associated Control Channel and a Fast Associated Control Channel.

27. The computer program product according to claim 25, wherein said at least one signaling channel includes a Slow Associated Control Channel and a Fast Associated Control Channel and wherein said instruction to increase power to said at least one signaling channel further comprises increasing power for two MUROS Slow Associated Control Channels, wherein said power of a first said Slow Associated Control Channel is increased on a first transmission, while power of a second Slow Associated Control Channel is increased on a second transmission.

28. The computer program product according to claim 26, wherein said instruction to increase power to said at least one signaling channel further comprises increasing power for two MUROS Slow Associated Control Channels, wherein said power of a first Slow Associated Control Channel is increased on a first transmission, while power of a second Slow Associated Control Channel is increased on a second transmission.

29. A computer program product, comprising:

a non-transitory computer-readable medium comprising;

code for causing a computer to improve signaling comprising instructions executable to;

track a quality of at least one signaling channel;

determine whether said at least one signaling channel has an error rate corresponding to co-channel interference that is above a threshold; and

apply a frame offset on said at least one signaling channel, wherein the frame offset is a time offset between communication signals of neighbor cells, and wherein the frame offset is controlled by a network, and wherein the frame offset ensures that only one cell in a cluster of neighbor cells controlled by the network uses an increased power signaling channel at any time, wherein extra power is alternately applied between different Multi-User on One Slot (MUROS) users.

30. The computer program product according to claim 29, wherein said at least one signaling channel includes a Slow Associated Control Channel and a Fast Associated Control Channel.