WO2012174803A1

WO2012174803A1 - Method, apparatus and system for sending rlc layer status report

Info

Publication number: WO2012174803A1
Application number: PCT/CN2011/080051
Authority: WO
Inventors: 杨新尧; 任泰云
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-06-21
Filing date: 2011-09-22
Publication date: 2012-12-27
Also published as: CN102843774A; CN102843774B

Abstract

Disclosed are a method, apparatus and system for sending an RLC layer status report. The method comprises: composing a status report, and setting the status as to-be-sent status; receiving a bottom layer scheduling notification and obtaining a scheduling bandwidth; judging whether the length of the status report is greater than the scheduling bandwidth, if yes, splitting the status report, and scheduling and outputting the split status report multiple times; and setting the status report as sending completed status. The apparatus comprises: a status report composing module, a resource obtaining module, a scheduling output module, and a status setting module. The method, apparatus and system of the present invention improve the timeliness of a data receiving side in sending the status report when the scheduling bandwidth is insufficient, thereby improving the timeliness of a data sending side in sending data and the timeliness of the data receiving side in delivering data to upper layers.

Description

Method, device and system for transmitting RLC layer status report

The present invention relates to a status report sending technique, and in particular, to a method, an apparatus and a system for transmitting an RLC layer status report. Background technique

In the AM (Confirmation Mode) mode of Radio Link Control (LTE) of Long Term Evolution (LTE), in order to ensure the reliability of transmission, the receiving side sends a status report to the transmitting side, and the transmitting side According to the result reported by the status report, the datagram that has received the confirmation is released, and the datagram that has not received the confirmation is retransmitted.

However, in the implementation of the status report transmission, when the scheduling bandwidth is small, which is smaller than the length of the status report, the current common processing method is: according to the size of the scheduling bandwidth, the split status report is two, and the first status report is sent. Go out, and the second discards, and sets the status of the status report to the sent status. Since the status of the status report is the sent completion status, when the next scheduled bandwidth arrives, the status report will not be sent again, and only the transmitting side can be triggered again.

Disadvantages of this method: Because the status report reported by the receiving side is not timely, the cached data report on the sending side cannot be released in time, occupying memory space, and more seriously, when the sending window is full, the upper layer delivery is not received. Data, stop data transfer. Similarly, since the receiving side status report is not sent in time, the retransmitted datagram is not retransmitted in time, which affects the receiving data of the receiving side and is delivered to the upper layer. Summary of the invention

The invention provides a method, a device and a system for sending an RLC layer status report, which are used to solve the problem that the data transmission side sends data interruption and the data receiving side brought by the transmission status report in the prior art. The problem of receiving data cannot be delivered to the upper layer in time.

In order to solve the above problems, the present invention adopts the following technical solutions:

In one aspect, the present invention provides a method for sending an RLC layer status report, including:

Constructing a status report, and setting the status report to be sent to be sent;

Receiving an underlying scheduling notification to obtain a scheduling bandwidth;

Determining whether the length of the status report is greater than the scheduling bandwidth, and if yes, splitting the status report and scheduling the output multiple times;

The status report is set to the transmission completion status.

In the method, the splitting the status report after splitting the status report comprises:

Step 21: The state report is split into two parts, and the split two-part status report satisfies a part of the scheduled output of the scheduling bandwidth;

Step 22: Receive an underlying scheduling notification again, and obtain a scheduling bandwidth.

Step 23: Determine whether the length of the status report of the remaining part is greater than the scheduling bandwidth acquired again, and if yes, perform step 24; otherwise, directly report the status of the remaining part to be scheduled and output;

Step 24: Split the state 4艮 of the remaining part into two parts, and output the part of the split two-part status report that meets the scheduling bandwidth, and perform step 22.

The method further includes:

When it is determined that the length of the status report is less than or equal to the scheduling bandwidth, the status report is directly scheduled to be output.

In another aspect, the present invention provides an apparatus for sending an RLC layer status report, including: a status report construction module, configured to construct a status report, and set the status report to be sent to be sent; and a resource acquisition module, configured to receive the bottom layer Scheduling notifications to obtain scheduling bandwidth;

a scheduling output module, configured to determine whether the length of the status report is greater than the scheduling bandwidth, and if yes, splitting the status report into multiple scheduling outputs;

a state setting module, configured to complete scheduling and outputting the status report in the scheduling output module After the exit, the status report is set to the transmission completion status.

The scheduling output module specifically includes:

a splitting module, configured to split the status report into two parts, and report the split two-part status report to a part of the scheduled output that meets the scheduling bandwidth;

a resource acquisition sub-module, configured to receive an underlying scheduling notification again, to obtain a scheduling bandwidth, and a scheduling output sub-module, configured to determine whether a length of the remaining partial status report is greater than a re-acquired scheduling bandwidth, and if so, triggering the split-molecular module to Part of the status report is split processing; otherwise, the status report of the remaining part is directly scheduled to be output.

The scheduling output module is further configured to: when the length of the status report is determined to be less than the scheduling bandwidth, the status report is directly scheduled to be output.

In still another aspect, the present invention provides a system for transmitting RLC layer status report, including: a data receiving device and a data transmitting device;

The data receiving apparatus is configured to construct a status report, and set the status report to be in a to-be-sent state; receive an underlay scheduling notification, obtain a scheduling bandwidth, and determine whether the length of the status report is greater than the scheduling bandwidth, and if yes, After the status report is split, the output is scheduled to be output multiple times; and after the status report is scheduled to be output, the status report is set to be a transmission completion status;

The data sending device is configured to receive a status report that is scheduled and output by the data receiving device, and implement release of the cached data report based on the status report.

The data receiving device splits the status report into multiple scheduling outputs, including: Step 81: Split the status report into two parts, and the split two-part status report meets the scheduling bandwidth. Partial scheduling output;

Step 82: Receive an underlying scheduling notification again, and obtain a scheduling bandwidth.

Step 83: Determine whether the length of the status report of the remaining part is greater than the scheduling bandwidth acquired again, and if yes, perform step 84; otherwise, directly output the status report of the remaining part;

Step 84: Split the state 4艮 of the remaining part into two parts, and split the two parts The partial report output of the status report that satisfies the scheduling bandwidth is performed, and step 82 is performed.

The data receiving apparatus is further configured to: when it is determined that the length of the status report is less than the scheduling bandwidth, directly output the status report.

The data transmitting device is further configured to trigger the data receiving device to report the status report. The data receiving device is further configured to construct a status report after receiving the triggering action of the data sending device.

Compared with the prior art, the beneficial effects of the present invention are as follows:

The method, the device and the system of the invention improve the timeliness of the status report sent by the data receiving side in the case of insufficient scheduling bandwidth, and thereby improve the timeliness of data transmission by the data transmitting side and the upper layer of the data receiving side. Timeliness of delivery of data. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set forth in the drawings Other drawings may also be obtained from these drawings without the inventive labor.

1 is a flowchart of a method for sending an RLC layer status report according to the present invention;

FIG. 3 is a flowchart of a method for sending an RLC layer status report according to Embodiment 1 of the present invention; FIG. 3 is a flowchart of a method for sending an RLC layer status report according to Embodiment 2 of the present invention; The structure diagram of the device sent by the status report. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, those of ordinary skill in the art are not All other embodiments obtained under the premise of creative work are within the scope of the invention.

The invention provides a method, a device and a system for transmitting an RLC layer status report, which overcomes the problem that when the scheduling bandwidth is insufficient in the prior art, the data receiving side sends a status report not timely, and the data sending side data transmission pauses, the data is generated. The shortcoming of the receiving side to the upper layer is not timely.

As shown in FIG. 1 , the method for sending an RLC layer status report provided by the present invention includes: Step S101: construct a status report, and set the status report to be sent to be sent;

Step S102: Receive an underlay scheduling notification, and acquire a scheduling bandwidth.

In step S103, it is determined whether the length of the status report is greater than the scheduling bandwidth. If yes, the status report is split and divided and outputted multiple times. In the present invention, at least one status report after the split is guaranteed to be less than or equal to the scheduling. Bandwidth, the method of splitting is not limited in the present invention.

The step S103 is specifically:

Step 1031: The state report is split into two parts, and the split two-part status report is partially scheduled output that satisfies the scheduling bandwidth.

Step 1032: Receive an underlying scheduling notification again, and obtain a scheduling bandwidth.

Step 1033: Determine whether the length of the status report of the remaining part is greater than the scheduling bandwidth acquired again. If yes, go to step 1034; otherwise, directly report the status of the remaining part to the output; Step 1034, the status of the remaining part is 4 The split is divided into two parts, and the split two-part status report is partially scheduled output that satisfies the scheduling bandwidth, and step 1032 is performed.

Step S104: Set the status report to a transmission completion status.

Two specific embodiments of the present invention will be described below with reference to Figs. 2 to 3, and the technical details of the present invention will be further given in conjunction with the description of the embodiments.

Embodiment 1

As shown in FIG. 2, this embodiment provides a method for sending an RLC layer status report, where the current scheduling bandwidth is smaller than the status report length, and the next scheduled bandwidth length is greater than the status report length. Line description, including:

Step S201: The data receiving side receives the notification of the trigger report status report on the data sending side, assembles the status report, and sets the status report sending status to the pending status.

In this embodiment, the assembled state report length is 30 bytes.

Step S202: The data receiving side obtains a scheduling notification, indicating that the current scheduling bandwidth length is 20 bytes.

Step S203: The data receiving side determines that the length of the status report is greater than the length of the current scheduling bandwidth, and the split status report is two; wherein, the first status report is 20 bytes, and the second status report is 10 bytes.

Step S204: The data receiving side uses the current scheduling bandwidth to schedule the first status report to be output to the data sending side.

Step S205: The data receiving side obtains the scheduling notification again, indicating that the bandwidth of the current scheduling bandwidth is 15 bytes.

Step S206: The data receiving side determines that the length of the status report is less than the length of the current scheduling bandwidth, directly sends the second status report, and sets the status report sending status to the sent completion status.

Embodiment 2

As shown in FIG. 3, this embodiment provides a method for sending an RLC layer status report. The method uses the current scheduling bandwidth to be smaller than the status report length, and the next scheduled bandwidth length is still smaller than the status report length. The status report length is described as an example. The details include:

Step S301: The data receiving side receives the notification of the triggering report status report on the data sending side, assembles the status report, and sets the status report sending status to the pending status.

In this embodiment, the assembled state report length is 30 bytes.

Step S302: The data receiving side obtains a scheduling notification, indicating that the current scheduling bandwidth length is 20 bytes.

Step S303: The data receiving side determines that the length of the status report is greater than the length of the current scheduling bandwidth. The split status is reported as two; where the first status is reported as 20 bytes and the second status is reported as 10 bytes.

Step S304: The data receiving side uses the current scheduling bandwidth to schedule the first status report to be output to the data sending side.

Step S305: The data receiving side obtains a scheduling notification again, indicating that the bandwidth of the current scheduling bandwidth is 5 bytes.

Step S306: The data receiving side determines that the length of the status report is greater than the length of the current scheduling bandwidth, and splits the status report into two, wherein the first one is 5 bytes, and the second is 5 bytes.

Step S307: The data receiving side schedules and outputs the first status report (5 bytes) to the data sending side by using the current scheduling bandwidth.

Step S308: The data receiving side obtains a scheduling notification again, indicating that the bandwidth of the current scheduling bandwidth is 8 bytes.

Step S309: The data receiving side determines that the length of the status report is less than the length of the current scheduling bandwidth, directly sends a second status report (5 bytes), and sets the status report transmission status to be sent.

The method of the invention improves the timeliness of sending the status report by the data receiving side in the case that the scheduling bandwidth is insufficient, and thereby improves the timeliness of the data sent by the data transmitting side and the timely delivery of the data to the upper layer of the data receiving side. Sex.

As shown in FIG. 4, the present invention further provides an apparatus for sending an RLC layer status report, including: a status report construction module 410, configured to construct a status report, and set the status report to be sent to be sent;

The resource obtaining module 420 is configured to receive an underlying scheduling notification, and acquire a scheduling bandwidth.

The scheduling output module 430 is configured to determine whether the length of the status report is greater than the scheduling bandwidth, and if yes, split the status report into multiple scheduling outputs;

The state setting module 440 is configured to set the status report to a transmission completion status after the scheduling output module completes scheduling output of the status report. The scheduling output module 430 specifically includes:

The splitting module 431 is configured to split the status report into two parts, and divide the split two parts of the status report into a partial scheduling output that satisfies the scheduling bandwidth;

The resource acquisition sub-module 432 is configured to receive the underlying scheduling notification again to obtain the scheduling bandwidth, and the scheduling output sub-module 433 is configured to determine whether the length of the remaining partial status report is greater than the re-acquired scheduling bandwidth, and if so, triggering the split-molecular module 431 splits the status report of the remaining part; otherwise, directly reports the status of the remaining part to be scheduled for output.

Further, the scheduling output module 430 is further configured to: when it is determined that the length of the status report is less than or equal to the scheduling bandwidth, directly output the status report.

The device of the invention improves the timeliness of sending the status report by the data receiving side in the case that the scheduling bandwidth is insufficient, thereby improving the timeliness of data transmission by the data transmitting side and the timeliness of data delivery to the upper layer by the data receiving side. .

The present invention also provides a system for transmitting RLC layer status report, comprising: a data receiving device and a data transmitting device;

a data receiving device, configured to construct a status report, and set the status report to be in a to-be-sent state; receive an underlying scheduling notification, obtain a scheduling bandwidth; and determine whether the length of the status report is greater than the scheduling bandwidth, and if so, After the status report is split, the output is scheduled to be output multiple times; and after the status report is scheduled to be output, the status report is set to the transmission completion status;

And a data sending device, configured to receive a status report that is scheduled to be output by the data receiving device, and implement release of the buffered data report based on the status report.

The data receiving device splits the status report into multiple scheduled outputs, including:

(1) splitting the status report into two parts, and reporting the partial scheduling output of the split two-part status message that satisfies the scheduling bandwidth;

(2) receiving the underlying scheduling notification again, and acquiring the scheduling bandwidth;

(3) determining whether the length of the status report of the remaining part is greater than the scheduling bandwidth acquired again. If yes, step (4) is performed; otherwise, the status of the remaining part is directly reported to be output;

(4), splitting the status report of the remaining part into two parts, and reporting the partial scheduling output of the split two-part status report that satisfies the scheduling bandwidth, and performing step (2).

Further, the data receiving apparatus is further configured to directly output the status report when it is determined that the length of the status report is less than the scheduling bandwidth.

Further, the data sending device is further configured to trigger the data receiving device to report a status report;

The data receiving device is further configured to construct a status report after receiving the triggering action of the data transmitting device.

The system of the invention improves the timeliness of the data receiving device transmitting the status report in the case that the scheduling bandwidth is insufficient, thereby improving the timeliness of the data transmitting device transmitting data and the timeliness of the data receiving device delivering the data to the upper layer. .

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

Claim

A radio link control method for transmitting an RLC layer status report, the method comprising:

When it is determined that the length of the status report is greater than the scheduling bandwidth, the status report is split and then scheduled to be output multiple times;

The status report is set to the transmission completion status.

2. The method according to claim 1, wherein the splitting the status report after splitting the plurality of scheduling outputs comprises:

The method according to claim 1 or 2, wherein the method further comprises: when it is determined that the length of the status report is less than or equal to the scheduling bandwidth, directly outputting the status report.

A device for transmitting a status report of a RLC layer by using a radio link, comprising: a status report constructing module, configured to construct a status report, and set the status report to be sent to be sent; Receiving an underlying scheduling notification to obtain a scheduling bandwidth;

a scheduling output module, configured to determine whether the length of the status report is greater than the scheduling bandwidth, and if yes, splitting the status report into multiple scheduling outputs; a status setting module, configured to set the status report to a transmission completion status after the scheduling output module completes scheduling output of the status report.

The device according to claim 4, wherein the scheduling output module specifically includes:

The apparatus according to claim 4 or 5, wherein the scheduling output module is further configured to directly schedule the status report when it is determined that the length of the status report is less than or equal to the scheduling bandwidth. Output.

A radio link control RLC layer status report transmission system, comprising: a data receiving device and a data transmitting device;

8. The system according to claim 7, wherein the data receiving device splits the status report into a plurality of scheduled outputs, including:

Step 81: Split the status report into two parts, and report the partial scheduling output of the split two-part status report that satisfies the scheduling bandwidth. Step 82: Receive an underlying scheduling notification again, and obtain a scheduling bandwidth.

Step 84: Split the state 4艮 of the remaining part into two parts, and output the part of the split two-part status report that meets the scheduling bandwidth, and perform step 82.

9. A system according to claim 7 or claim 8 wherein:

The data receiving apparatus is further configured to: when it is determined that the length of the status report is less than or equal to the scheduling bandwidth, directly output the status report.

10. The system of claim 7 wherein:

The data transmitting device is further configured to trigger the data receiving device to report the status report; the data receiving device is further configured to construct a status report after receiving the triggering action of the data sending device.