CHANNEL RESERVATION FOR MULTI-USER SCHEDULING

• US 20180295622A1
• Filed: 10/23/2017
• Published: 10/11/2018
• Est. Priority Date: 04/05/2017
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Sadek, Ahmed Kamel, Kadous, Tamer
• Granted Patent: US 10,484,992 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 17/309 Measuring or estimating channel quality parameters
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• 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

Techniques are described herein to selectively protect some resources of a transmission opportunity, but not all resources of a transmission opportunity. A base station may schedule resources to be used to communicate data with a user equipment (UE). To indicate to potential interference sources, a silencing message may broadcast to other network entities. The silencing message may include an indication of resources to be protected for a transmission between the base station and the UE. The silencing message may indicate a subset of resources that is less than a set of all resources of a transmission opportunity. In some examples, the silencing message may indicate a subset of frequency subbands of the transmission opportunity. In response to the silencing message, potential interference sources may refrain from communicating data during the indicated subset of resources.

Claims

1. A method for wireless communication, comprising:

measuring, by a user equipment (UE), a plurality of signal parameters for a plurality of frequency subbands in a shared radio frequency spectrum band received by the UE;

transmitting a quality message that includes the plurality of signal parameters measured by the UE; and

receiving, via the shared radio frequency spectrum band, a targeted preamble that indicates resources to be used by the UE to communicate data, wherein the targeted preamble comprises an instruction configured to silence an interference source during a transmission of data to the UE using the resources, the instruction comprising an indication of the interference source and the identified resources.

2. The method of claim 1, further comprising:

identifying the interference source associated with the UE based at least in part on the plurality of signal parameters.

3. The method of claim 1, further comprising:

transmitting the data using the identified resources.

4. The method of claim 1, wherein the quality message is a resource response message.

5. The method of claim 1, wherein the resources include a subset of resources that is less than a set of all resources associated with a transmission opportunity.

6. The method of claim 1, wherein the resources include a subset of frequency resources that is less than a set of all frequency resources associated with a transmission opportunity.

7. The method of claim 1, further comprising:

another UE is scheduled to use at least a portion of resources associated with a transmission opportunity, wherein the portion of resources are different from the resources of the transmission opportunity used by the UE to receive data.

8. A method for wireless communication, comprising:

receiving a resource request message from a base station;

identifying a subset of resources of a transmission opportunity included in the resource request message to be used for receiving data from the base station; and

broadcasting a resource response message to a potential interference source indicating the subset of resources to be used for receiving data from the base station.

9. The method of claim 8, wherein the resource response message includes a subset of frequency resources of the transmission opportunity for communication with the base station.

10. The method of claim 8, further comprising:

determining a bitmap value of the subset of resources, wherein the resource response message includes the bitmap value indicating the subset of resources.

11. The method of claim 8, further comprising:

receiving data from the base station using the subset of resources.

12. The method of claim 8, wherein the subset of resources is less than a set of all resources associated with the transmission opportunity.

13. The method of claim 8, wherein another UE is scheduled to use at least a portion of resources associated with the transmission opportunity, wherein the portion of resources are different from the resources of the transmission opportunity used by the UE to receive data.

14. The method of claim 8, wherein the subset of resources included in the resource response message indicate a subset of frequency resources different from frequency resources used to broadcast the resource response message.

15. A method for wireless communication, comprising:

receiving, by a network entity, a resource response message from a user equipment (UE);

identifying a subset of frequency resources of a transmission opportunity included in the resource response message to be used by the UE to communicate data, wherein the subset of frequency resources is less than a set of all resources associated with the transmission opportunity; and

refraining from transmitting data using the subset of frequency resources included in the resource response message.

16. The method of claim 15, further comprising:

comparing the subset of frequency resources to a scheduled resources to be used by the network entity to communicate data, wherein refraining from transmitting data is based at least in part on the subset of frequency resources overlapping with the scheduled resources.

17. The method of claim 15, further comprising:

determining a bitmap value from information included in the resource response message, wherein identifying the subset of frequency resources is based at least in part on the bitmap value.

18. The method of claim 15, wherein the network entity is scheduled to use at least a portion of frequency resources associated with the transmission opportunity, wherein the portion of frequency resources are different from the resources of the transmission opportunity used by the UE to receive data.

19. An apparatus for wireless communication, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory, wherein the instructions are executable by the processor to;

receive a resource request message from a base station;

identify a subset of resources of a transmission opportunity included in the resource request message to be used for receiving data from the base station; and

broadcast a resource response message to a potential interference source indicating the subset of resources to be used for receiving data from the base station.

20. The apparatus of claim 19, wherein the resource response message includes a subset of frequency resources of the transmission opportunity for communication with the base station.

21. The apparatus of claim 19, wherein the instructions are further executable by the processor to:

determine a bitmap value of the subset of resources, wherein the resource response message includes the bitmap value indicating the subset of resources.

22. The apparatus of claim 19, wherein the instructions are further executable by the processor to:

receive data from the base station using the subset of resources.

23. The apparatus of claim 19, wherein:

the subset of resources is less than a set of all resources associated with the transmission opportunity.

24. The apparatus of claim 19, wherein:

another UE is scheduled to use at least a portion of resources associated with the transmission opportunity, wherein the portion of resources are different from the resources of the transmission opportunity used by the UE to receive data.

25. The apparatus of claim 19, wherein:

the subset of resources included in the resource response message indicate a subset of frequency resources different from frequency resources used to broadcast the resource response message.