IP Library › Granted Patent US 9,912,463
Granted Patent B2
US 9,912,463 · App. 14/569,708 · Granted Mar 6, 2018

Full duplex transmission setup and release mechanism

Inventors: Anming Jiang (Shenzhen, CN); Bo Sun (Shenzhen, CN); Nan Li (Shenzhen, CN); Yonggang Fang (San Diego, CA)
Assignee: ZTE Corporation
H04L5/143H04L5/16H04L27/0006H04L5/0007H04L5/1492
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Quick Facts
Patent No.
US 9,912,463
App. No.
14/569,708
Granted
Mar 6, 2018
Kind
B2
Abstract

In a wireless network, full duplex communication is established using a half-duplex mechanism. During a full duplex communication opportunity, a first quantum of data is transmitted from a first station to a second station and a second quantum of data is received by the first station from the second station. The full duplex transmission opportunity is implicitly or explicitly established and ended using a transmission mechanism understood by half duplex wireless stations.

Claims (55)

1. A method of facilitating full duplex communication over a shared wireless communication medium, comprising:

backing off from the shared wireless communication medium for a time period equivalent to a contention window;

entering, by transmitting a full-duplex transmission request that includes an indication of full-duplex communication capability and an estimated full-duplex transmission duration in the transmission period, a contention period obtained by a division of a medium occupancy time of the shared wireless communication medium into the contention period and a transmission period, wherein the division is compatible with a half-duplex transmission mechanism and the indication of full-duplex communication capability is ignored by half-duplex communication nodes for backward compatibility;

receiving a full-duplex transmission response that includes a full-duplex transmission period determined based on the estimated full-duplex transmission duration;

establishing a full-duplex communication opportunity within the full-duplex transmission period for data transmission and reception; and

transmitting, during the full duplex communication opportunity, a first quantum of data; and

receiving, during the full duplex communication opportunity, a second quantum of data.

2. The method of claim 1 , further comprising:

terminating, after completion of the data transmission and reception, the full duplex communication opportunity.

3. The method of claim 1 , wherein the establishing comprises:

transmitting the first quantum of data along with an indication of full-duplex operation.

4. The method of claim 3 , further including:

transmitting an acknowledgement message in response to the receiving the second quantum of data.

5. The method of claim 1 , wherein the estimated full-duplex transmission duration is determined based on the first quantum of data and the second quantum of data.

6. A method of facilitating full duplex communication over a shared wireless communication medium, comprising:

receiving, during a contention period obtained by a division of a medium occupancy time of the shared wireless communication medium into the contention period and a transmission period, a full-duplex transmission request that includes an indication of full-duplex communication capability and an estimated full-duplex transmission duration in the transmission period, wherein the division is compatible with a half-duplex communication mechanism and the indication of full-duplex communication capability is ignored by half-duplex communication nodes for backward compatibility;

transmitting a full-duplex transmission response that includes a full-duplex transmission period determined based on the estimated full-duplex transmission duration;

establishing a full-duplex communication opportunity within the transmission period for data transmission and reception;

receiving, during the full duplex communication opportunity, a first quantum of data; and

transmitting, during the full duplex communication opportunity, a second quantum of data.

7. The method of claim 6 , further comprising:

terminating, after completion of the data transmission and reception, the full duplex communication opportunity.

8. The method of claim 6 , wherein the establishing comprises:

transmitting the second quantum of data along with an indication of full-duplex operation.

9. The method of claim 8 , further including:

transmitting an acknowledgement message in response to the receiving the first quantum of data; and

receiving a third quantum of data, wherein the third quantum of data is received at least partially concurrently with the transmission of the acknowledgement message.

10. A wireless communication apparatus, comprising a memory and a processor, wherein the memory stores code and the processor reads the code from the memory and implements a method of full duplex communication by:

backing off from the shared wireless communication medium for a time period equivalent to a contention window;

entering, by transmitting a full-duplex transmission request that includes an indication of full-duplex communication capability, a contention period obtained by a division of a medium occupancy time of the shared wireless communication medium into the contention period and a transmission period, wherein the division is compatible with a half-duplex transmission mechanism and the indication of full-duplex communication capability is ignored by half-duplex communication nodes for backward compatibility;

receiving a full-duplex transmission response that includes a full-duplex transmission period determined based on the estimated full-duplex transmission duration;

establishing a full-duplex communication opportunity within the full-duplex transmission period for data transmission and reception; and

transmitting, during the full duplex communication opportunity, a first quantum of data; and

receiving, during the full duplex communication opportunity, a second quantum of data.

11. A computer program product comprising a non-transitory computer readable storage medium on which computer-executable instructions are stored, the instructions comprising:

instructions for receiving, during a contention period obtained by a division of a medium occupancy time of the shared wireless communication medium into the contention period and a transmission period, a full-duplex transmission request that includes an indication of full-duplex communication capability and an estimated full-duplex transmission duration in the transmission period, wherein the division is compatible with a half-duplex communication mechanism and the indication of full-duplex communication capability is ignored by half-duplex communication nodes for backward compatibility;

instructions for transmitting a full-duplex transmission response that includes a full-duplex transmission period determined based on the estimated full-duplex transmission duration;

instructions for establishing a full-duplex communication opportunity within the transmission period for data transmission and reception;

instructions for receiving, during the full duplex communication opportunity, a first quantum of data; and

instructions for transmitting, during the full duplex communication opportunity, a second quantum of data.

12. The computer program product of claim 11 , wherein the instructions further include:

instructions for estimating a duration of the full-duplex communication opportunity; and

instructions for transmitting a message indicative of the duration.

13. The method of claim 1 , wherein the full-duplex transmission request is a full-duplex transmission opportunity (FDOP) request frame to request occupation of the shared wireless communication medium.

14. The method of claim 13 , wherein the FDOP request frame is a request to send (RTS) frame.

15. The method of claim 13 , wherein the FDOP request frame is an Aggregated MAC Protocol Data Unit (A-MPDU) frame.

16. The method of claim 1 , wherein the full-duplex transmission response is an FDOP response frame.

17. The method of 16 , wherein the FDOP response frame is a clear to send (CTS) frame.

18. The method of 16 , wherein the FDOP response frame is an acknowledgement (ACK) frame.

19. The method of claim 1 , wherein the full-duplex transmission request is a full-duplex transmission opportunity (FDOP) request frame to request occupation of the shared wireless communication medium.

20. The method of claim 19 , wherein the FDOP request frame is a request to send (RTS) frame.

21. The method of claim 19 , wherein the FDOP request frame is an Aggregated MAC Protocol Data Unit (A-MPDU) frame.

22. The method of claim 6 , wherein the full-duplex transmission response is an FDOP response frame.

23. The method of 22 , wherein the FDOP response frame is a clear to send (CTS) frame.

24. The method of 22 , wherein the FDOP response frame is an acknowledgement (ACK) frame.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 12, 2015
From: JIANG, ANMING; SUN, BO; LI, NAN; FANG, YONGGANG
To: ZTE CORPORATION
Reel/Frame 035903/0359 →
Priority Claims (1)
WO PCT/CN2013/089412 · Dec 13, 2013 · international
Continuity (1)
Related Publication 20150172038A1 · Jun 18, 2015