System and Method to Enable Resource Partitioning in Wireless Networks

• US 20140011507A1
• Filed: 09/11/2013
• Published: 01/09/2014
• Est. Priority Date: 05/22/2008
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: BHATTAD, Kapil, PALANKI, Ravi
• Granted Patent: US 8,831,522 B2
• Time in Patent Office: Days
• US Class Current: 455/450
• CPC Class Codes: H04L 1/0001 Systems modifying transmission characteristics according to link quality, e.g. power backoff adaptive data allocation for multicarrier modulation H04L5/0044; controlling transmission power for radio systems H04W52/04
• CPC Class Codes: H04L 1/1867 Arrangements specially adapted for the transmitter end
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

Systems and methodologies are described that facilitate improved resource partitioning and interference management in a wireless communication system. Techniques are described herein for the transmission and use of various types of signaling, such as Access Request commands, Reverse Link Special Resource Utilization Message (R-SRUM) signaling, Forward Link Special Resource Utilization Message (F-SRUM) signaling, and the like, for managing interference associated with range extension, restricted association networks, and other jamming scenarios. As described herein, downlink resource coordination and interference management are accomplished through the use of Access Request or R-SRUM signaling conducted in a unicast or broadcast fashion, and uplink resource coordination and interference management are accomplished through the use of F-SRUM signaling. As further described herein, a clean communication channel such as a Low Reuse Preamble (LRP) channel can be utilized for interference management signaling and/or leveraged for determining timing of various signaling messages.

Claims

1. A method for wireless communication by a user equipment (UE), comprising:

transmitting an access request to a desired serving base station;

transmitting resource utilization messages (RUMs) to one or more interfering base stations; and

retransmitting the access request and the RUMs based on a time reuse pattern when the UE has not received a response to the access request and the RUMs.

2. The method of claim of claim 1, wherein the access request is transmitted on a clean communication channel, utilized for interference management signaling.

3. The method of claim 1, wherein the access request is transmitted on a Low Reuse Preamble (LRP) channel.

4. A method for wireless communication by a user equipment (UE), comprising:

identifying a base station causing a highest amount of interference;

observing channel information related to the identified base station;

requesting reservation of resources by the interfering base station based, at least on part, on the observed channel information; and

when one or more interfering base stations causing at least a threshold amount of interference is identified, observing channel characteristics related to the one or more interfering base stations, and requesting reservation of resources based, at least in part, on the observed channel information for the respective base stations.

5. The method of claim 4, wherein the resources are one of time or frequency resources.

6. The method of claim 4, further comprising:

determining the resources have not been reserved by the base station causing the highest amount of interference; and

in response to the determination, re-transmitting the request for reservation of resources.

7. An apparatus for wireless communication, comprising:

means for transmitting an access request to a desired serving base station;

means for transmitting resource utilization messages (RUMs) to one or more interfering base stations; and

means for retransmitting the access request and the RUMs based on a time reuse pattern when a user equipment (UE) has not received a response to the access request and the RUMs.

8. The apparatus of claim of claim 7, wherein the access request is transmitted on a clean communication channel, utilized for interference management signaling.

9. The apparatus of claim 7, wherein the access request is transmitted on a Low Reuse Preamble (LRP) channel.

10. An apparatus for wireless communication, comprising:

means for identifying a base station causing a highest amount of interference;

means for observing channel information related to the identified base station;

means for requesting reservation of resources by the interfering base station based, at least on part, on the observed channel information; and

when one or more interfering base stations causing at least a threshold amount of interference is identified, means for observing channel characteristics related to the one or more interfering base stations, and means for requesting reservation of resources based, at least in part, on the observed channel information for the respective base stations.

11. The apparatus of claim 10, wherein the resources are one of time or frequency resources.

12. The apparatus of claim 10, further comprising:

means for determining the resources have not been reserved by the base station causing the highest amount of interference; and

in response to the determination, means for re-transmitting the request for reservation of resources.

13. An apparatus for wireless communication comprising at least one processor configured to:

transmit an access request to a desired serving base station;

transmit resource utilization messages (RUMs) to one or more interfering base stations; and

retransmit the access request and the RUMs based on a time reuse pattern when a user equipment (UE) has not received a response to the access request and the RUMs; and

a memory coupled to the at least one processor.

14. The apparatus of claim of claim 13, wherein the access request is transmitted on a clean communication channel, utilized for interference management signaling.

15. The apparatus of claim 13, wherein the access request is transmitted on a Low Reuse Preamble (LRP) channel.

16. An apparatus for wireless communication comprising at least one processor configured to:

identify a base station causing a highest amount of interference;

observe channel information related to the identified base station;

request reservation of resources by the interfering base station based, at least on part, on the observed channel information; and

when one or more interfering base stations causing at least a threshold amount of interference is identified, observe channel characteristics related to the one or more interfering base stations, and request reservation of resources based, at least in part, on the observed channel information for the respective base stations; and

a memory coupled to the at least one processor.

17. The apparatus of claim 16, wherein the resources are one of time or frequency resources.

18. The apparatus of claim 16, wherein the at least one processor is further configured to:

determine the resources have not been reserved by the base station causing the highest amount of interference; and

in response to the determination, re-transmit the request for reservation of resources.

19. A computer-program product for wireless communications, the computer-program product comprising a non-transitory computer-readable medium having code stored thereon, the code executable by one or more processors for:

transmitting an access request to a desired serving base station;

transmitting resource utilization messages (RUMs) to one or more interfering base stations; and

retransmitting the access request and the RUMs based on a time reuse pattern when a user equipment (UE) has not received a response to the access request and the RUMs.

20. The computer-program product of claim of claim 19, wherein the access request is transmitted on a clean communication channel, utilized for interference management signaling.

21. The computer-program product of claim 19, wherein the access request is transmitted on a Low Reuse Preamble (LRP) channel.

22. A computer-program product for wireless communications, the computer-program product comprising a non-transitory computer-readable medium having code stored thereon, the code executable by one or more processors for:

computer-program product for wireless communications, the computer-program product comprising a non-transitory computer-readable medium having code stored thereon, the code executable by one or more processors for;

identifying a base station causing a highest amount of interference;

observing channel information related to the identified base station;

requesting reservation of resources by the interfering base station based, at least on part, on the observed channel information; and

when one or more interfering base stations causing at least a threshold amount of interference is identified, observing channel characteristics related to the one or more interfering base stations, and requesting reservation of resources based, at least in part, on the observed channel information for the respective base stations.

23. The computer-program product of claim 22, wherein the resources are one of time or frequency resources.

24. The computer-program product of claim 22, wherein the one or more processors are further configured to:

determine the resources have not been reserved by the base station causing the highest amount of interference; and

in response to the determination, re-transmit the request for reservation of resources.