Data transmission method, sender device, and receiver device

• US 10,212,734 B2
• Filed: 09/07/2016
• Issued: 02/19/2019
• Est. Priority Date: 03/10/2014
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Ni, Rui, Luo, Yi
• Primary Examiner(s): Jain, Raj
• Assistant Examiner(s): Lee, Andrew C
• Application Number:
  US15/258,986
• Publication Number:
  US 20160381703A1
• Time in Patent Office: 895 Days
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 27/2607 Cyclic extensions
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/02 Hybrid access
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 74/0816 with collision avoidance
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

Embodiments of the present invention provide a data transmission method, a sender device, and a receiver device. The method includes: sending, by a sender device, to-be-transmitted data to a receiver device according to a transmission policy; and receiving, by the sender device, feedback information sent by the receiver device. In this process, for to-be-transmitted data after a guard interval in a last radio frame of any scheduling window, the sender device sends the to-be-transmitted data according to the transmission policy, so that no timeout occurs when the sender device is waiting for the feedback information, thereby achieving an objective of improving data transmission efficiency.

Claims

1. A data transmission method, comprising:

sending, by a sender device, to-be-transmitted data to a receiver device according to a transmission policy, wherein the to-be-transmitted data is data carried by a subframe, the subframe being after a guard interval of a last radio frame in a first scheduling window; and

receiving, by the sender device, feedback information sent by the receiver device, wherein the transmission policy is buffering the to-be-transmitted data and sending the to-be-transmitted data in a non-last radio frame of a second scheduling window, wherein the second scheduling window is any scheduling window after the first scheduling window; and

, wherein sending, by the sender device, the to-be-transmitted data to the receiver device according to a transmission policy comprises;

sending, by the sender device, the to-be-transmitted data in the non-last radio frame in the second scheduling window according to the transmission policy; and

receiving, by the sender device, the feedback information sent by the receiver device comprises;

receiving, by the sender device, the feedback information sent by the receiver device in the non-last radio frame in the second scheduling window.

2. The data transmission method according to claim 1, wherein the to-be-transmitted data is sent by the sender device over a common channel, and the feedback information is received by the sender device over the common channel, wherein the common channel is a channel over which the sender device and the receiver device transmit data.

3. The data transmission method according to claim 1, wherein the to-be-transmitted data is sent by the sender device over a common channel and the feedback information is received by the sender device over a dedicated channel, wherein the common channel is a channel over which the sender device and the receiver device transmit data, and the dedicated channel is a channel over which the sender device and the receiver device transmit feedback information.

4. The data transmission method according to claim 1, wherein:

the transmission policy is setting a feedback time length of feedback information of the to-be-transmitted data to be greater than a time length of a contention window between the first scheduling window and a third scheduling window, wherein the third scheduling window is the first scheduling window after the first scheduling window; and

, wherein sending, by the sender device, the to-be-transmitted data to the receiver device according to a transmission policy comprises;

sending, by the sender device, the to-be-transmitted data in the last radio frame in the first scheduling window according to the to-be-transmitted policy; and

receiving, by the sender device, the feedback information sent by the receiver device comprises;

receiving, by the sender device, the feedback information sent by the receiver device in a radio frame in the third scheduling window.

5. A data transmission method, comprising:

receiving, by a receiver device, to-be-transmitted data sent by a sender device according to a transmission policy, wherein the to-be-transmitted data is data carried by a subframe, the subframe being after a guard interval of a last radio frame in a first scheduling window; and

sending, by the receiver device, feedback information to the sender device, wherein the transmission policy is buffering the to-be-transmitted data and sending the to-be-transmitted data in a non-last radio frame of a second scheduling window, wherein the second scheduling window is any scheduling window after the first scheduling window; and

, wherein receiving, by the receiver device, the to-be-transmitted data sent by a sender device according to a transmission policy comprises;

receiving, by the receiver device, the to-be-transmitted data sent by the sender device in the non-last radio frame in the second scheduling window according to the transmission policy; and

sending, by the receiver device, the feedback information to the sender device comprises;

sending, by the receiver device, the feedback information to the sender device in the non-last radio frame in the second scheduling window.

6. The data transmission method according to claim 5, wherein the to-be-transmitted data is sent by the sender device over a common channel and the feedback information is received by the sender device over the common channel, wherein the common channel is a channel over which the sender device and the receiver device transmit data.

7. The data transmission method according to claim 5, wherein the to-be-transmitted data is received by the receiver device over a common channel and the feedback information is sent by the receiver device over a dedicated channel, wherein the common channel is a channel over which the sender device and the receiver device transmit data, and the dedicated channel is a channel over which the sender device and the receiver device transmit feedback information.

8. The data transmission method according to claim 5, wherein:

the transmission policy is setting a feedback time length of feedback information of the to-be-transmitted data to be greater than a time length of a contention window between the first scheduling window and a third scheduling window, wherein the third scheduling window is the first scheduling window after the first scheduling window; and

, wherein receiving, by the receiver device, the to-be-transmitted data sent by the sender device according to a transmission policy comprises;

receiving, by the receiver device, the to-be-transmitted data sent by the sender device in the last radio frame in the first scheduling window according to the transmission policy; and

sending, by the receiver device, the feedback information to the sender device comprises;

sending, by the receiver device, the feedback information to the sender device in a radio frame in the third scheduling window.

9. A sender device, comprising

a processor configured to execute executable instructions, which when executed by the processor, and cause the processor to:

send to-be-transmitted data to a receiver device according to a transmission policy, wherein the to-be-transmitted data is data carried by a subframe, the subframe being after a guard interval of a last radio frame in a first scheduling window; and

receive feedback information sent by the receiver device, wherein when the transmission policy is buffering the to-be-transmitted data and sending the to-be-transmitted data in a non-last radio frame of a second scheduling window, and the second scheduling window is any scheduling window after the first scheduling window, the sending module is configured to send the to-be-transmitted data in the non-last radio frame in the second scheduling window according to the transmission policy; and

, wherein the receiving module is configured to receive the feedback information sent by the receiver device in the non-last radio frame in the second scheduling window.

10. The sender device according to claim 9, wherein the processor is further caused to:

send, over a common channel, the to-be-transmitted data to the receiver device according to the transmission policy, wherein the common channel is a channel over which the sender device and the receiver device transmit data; and

receive, over the common channel, the feedback information sent by the receiver device.

11. The sender device according to claim 9, wherein the processor is further caused to:

send, over a common channel, the to-be-transmitted data to the receiver device according to the transmission policy, wherein the common channel is a channel over which the sender device and the receiver device transmit data; and

receive, over a dedicated channel, the feedback information sent by the receiver device, wherein the dedicated channel is a channel over which the sender device and the receiver device transmit feedback information.

12. The sender device according to claim 9, wherein the processor is further caused to:

when the transmission policy is setting a feedback time length of feedback information of the to-be-transmitted data to be greater than a time length of a contention window between the first scheduling window and a third scheduling window, and the third scheduling window is the first scheduling window after the first scheduling window, send the to-be-transmitted data in the last radio frame in the first scheduling window according to the to-be-transmitted policy; and

receive the feedback information sent by the receiver device in a radio frame in the third scheduling window.

13. A receiver device, comprising:

a processor configured to execute executable instructions, which when executed by the processor, and cause the processor to;

receive to-be-transmitted data sent by a sender device according to a transmission policy, wherein the to-be-transmitted data is data carried by a subframe, the subframe being after a guard interval of a last radio frame in a first scheduling window;

send feedback information to the sender device, and wherein cause the processor further to;

when the transmission policy is buffering the to-be-transmitted data and sending the to-be-transmitted data in a non-last radio frame of a second scheduling window, and the second scheduling window is any scheduling window after the first scheduling window, the receiving module is configured to receive the to-be-transmitted data sent by the sender device in the non-last radio frame in the second scheduling window according to the transmission policy; and

the sending module is configured to send the feedback information to the sender device in the non-last radio frame in the second scheduling window.

14. The receiver device according to claim 13, wherein the processor is further caused to:

receive, over a common channel, the to-be-transmitted data sent by the sender device according to the transmission policy, wherein the common channel is a channel over which the sender device and the receiver device transmit data; and

send, over the common channel, the feedback information to the sender device.

15. The receiver device according to claim 13, wherein the processor is further caused to:

receive, over a common channel, the to-be-transmitted data sent by the sender device according to the transmission policy, wherein the common channel is a channel over which the sender device and the receiver device transmit data; and

send the feedback information to the sender device over a dedicated channel, wherein the dedicated channel is a channel over which the sender device and the receiver device transmit feedback information.

16. The receiver device according to claim 13, wherein the processor is further caused to:

when the transmission policy is setting a feedback time length of feedback information of the to-be-transmitted data to be greater than a time length of a contention window between the first scheduling window and a third scheduling window, and the third scheduling window is the first scheduling window after the first scheduling window, receive the to-be-transmitted data sent by the sender device in the last radio frame in the first scheduling window according to the transmission policy; and

send the feedback information to the sender device in a radio frame in the third scheduling window.