Systems and Methods for Interference Avoidance, Channel Sounding, and Other Signaling for Multi-User Full Duplex Transmission

• US 20140169234A1
• Filed: 03/13/2013
• Published: 06/19/2014
• Est. Priority Date: 12/14/2012
• Status: Abandoned Application

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Futurewei Technologies Incorporated (Huawei Investment & Holding Co., Ltd.)
• Inventors: Zhu, Peiying, Tong, Wen, Ma, Jianglei
• Application Number:
  US13/802,230
• Publication Number:
  US 20140169234A1
• Time in Patent Office: Days
• US Class Current: 370/277
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

System and method embodiments are provided for transmission and reception scheduling for wireless devices in a multi-user full duplex transmission environment. The embodiments enable interference avoidance between neighboring wireless devices. The system and method also enable channel sounding. In an embodiment, a method for scheduling transmissions in a multi-user wireless system includes determining, by a transmission point, neighboring wireless devices for each of a plurality of wireless devices located within a coverage area of the transmission point and determining, by the transmission point, a transmission schedules for respective ones of the plurality of wireless devices according to the neighboring information of the devices such that each respective wireless device is scheduled to transmit data over different time-frequency resources than those in which neighboring wireless devices of the respective wireless device are scheduled to receive data.

Claims

1. A method for scheduling transmissions in a multi-user wireless system, the method comprising:

determining, by a transmission point, neighboring wireless devices for each of a plurality of wireless devices located within a coverage area of the transmission point; and

determining, by the transmission point, a transmission schedules for respective ones of the plurality of wireless devices according to the neighboring information of the devices such that each respective wireless device is scheduled to transmit data over different time-frequency resources than those in which neighboring wireless devices of the respective wireless device are scheduled to receive data.

2. The method of claim 1 further comprising scheduling a wireless device to transmit data to the transmission point on a first time-frequency resource at a same time that a non-neighbor wireless device is scheduled to receive data from the transmission point on the first time-frequency resource.

3. The method of claim 1 further comprising scheduling a wireless device to transmit one of channel sounding, control signaling, and low data rate traffic on a first time-frequency resource at a same time that a non-neighbor wireless device is scheduled to receive data from the transmission point on the first time-frequency resource.

4. The method of claim 1 wherein determining neighboring wireless devices for each of the plurality of wireless devices comprises receiving an identification of neighboring wireless devices from at least one of the plurality of wireless devices.

5. The method of claim 1, wherein determining neighboring wireless devices for each of the plurality of wireless devices comprises determining locations of the plurality of wireless devices.

6. The method of claim 1, further comprising coordinating schedules with an other BTS.

7. The method of claim 6, wherein coordinating schedules with another BTS comprises determining neighbors for wireless devices in the coverage area for the BTS and in a coverage area for the other BTS, wherein at least one wireless device in the coverage area for the BTS is a neighbor to at least one wireless device in the coverage area for the other BTS.

8. The method of claim 6, wherein coordinating schedules with an other BTS comprises determining a schedule for the wireless devices in the coverage area for the BTS and for the wireless devices in a coverage are for the other BTS and transmitting the schedule to the other BTS.

9. The method of claim 6, wherein coordinating schedules with an other BTS comprises receiving a schedule from the other BTS.

10. The method of claim 1, wherein dedicated resources are allocated to wireless devices on an edge of the coverage area for the transmission point.

11. The method of claim 1, wherein the transmission point operates in full duplex mode.

12. A network component configured for scheduling transmissions for a plurality of wireless devices in a multi-user full duplex transmission wireless system comprising:

a processor; and

a computer readable storage medium storing programming for execution by the processor, the programming including instructions to;

determine neighboring wireless devices for each of the plurality of wireless devices located within a coverage area of a base transceiver station (BTS); and

determine transmission schedules for respective ones of the plurality of wireless devices such that each respective wireless device is scheduled to transmit data over different time-frequency resources than those in which neighboring wireless devices of the respective wireless device are scheduled to receive data.

13. The network component of claim 12 wherein the programming further includes instructions to schedule a wireless device to transmit data to the BTS on a first time-frequency resource at a same time that a non-neighbor wireless device is scheduled to receive data from the BTS on the first time-frequency resource.

14. The network component of claim 12 wherein the programming further includes instructions to schedule a wireless device to transmit one of channel sounding, control signaling, and low data rate traffic on a first time-frequency resource at a same time that a non-neighbor wireless device is scheduled to receive data from the BTS on the first time-frequency resource.

15. The network component of claim 12 wherein the instructions to determine neighboring wireless devices for each of the plurality of wireless devices comprises instructions to receive an identification of neighboring wireless devices from at least one of the plurality of wireless devices.

16. The network component of claim 12, wherein the instructions to determine neighboring wireless devices for each of the plurality of wireless devices comprises instructions to determine the location of the plurality of wireless devices.

17. The network component of claim 12, wherein the programming further includes instructions to coordinate schedules with another BTS.

18. The network component of claim 17, wherein the instructions to coordinate schedules with an other BTS comprise instructions to determine neighbors for wireless devices in the coverage area for the BTS and in a coverage area for the other BTS, wherein at least one wireless device in the coverage area for the BTS is a neighbor to at least one wireless device in the coverage area for the other BTS.

19. The network component of claim 17, wherein the instructions to coordinate schedules with an other BTS comprise instructions to determine a schedule for the wireless devices in the coverage area for the BTS and for the wireless devices in a coverage are for the other BTS and transmitting the schedule to the other BTS.

20. The network component of claim 17, wherein the instructions to coordinate schedules with an other BTS comprise instructions to receive a schedule from the other BTS.

21. The network component of claim 12, wherein the programming further includes instructions to allocate dedicated resources to wireless devices on an edge of the coverage area for the BTS.

22. The network component of claim 12, wherein the BTS is configured to operate in full duplex mode.

23. A method for scheduling transmissions for a plurality of wireless devices in a multi-user full duplex transmission wireless system, the method comprising:

determining, by a base transceiver station (BTS), neighbor wireless devices for a first wireless device wirelessly coupled to the BTS;

scheduling, by the BTS, transmission from the first wireless device to the BTS on a channel when none of the neighbor wireless devices to the first wireless device are scheduled to receive data from the BTS on the channel; and

scheduling, by the BTS, data transmission to the first wireless device from the BTS on the channel when none of the neighbor wireless devices are scheduled to transmit to the BTS on the channel.

24. The method of claim 23, wherein the transmission from the first wireless device to the BTS comprises channel sounding.

25. The method of claim 23, wherein the transmission from the first wireless device to the BTS comprises control signaling.

26. The method of claim 23, wherein at least one of the neighbor devices is in a different coverage area from the first wireless device.

27. The method of claim 23, wherein the first wireless device is located at an edge of a coverage area for the BTS and wherein the transmission comprises channel sounding to the BTS and to a different BTS.

28. The method of claim 23, further comprising sending a transmission schedule for the first wireless device to another BTS.