WO2013174036A1

WO2013174036A1 - Transmission method and device

Info

Publication number: WO2013174036A1
Application number: PCT/CN2012/076404
Authority: WO
Inventors: 姜怡; 王瑜; 权威; 张戬; 陈玉华; 宋巍巍
Original assignee: 华为技术有限公司
Priority date: 2012-05-21
Filing date: 2012-06-01
Publication date: 2013-11-28
Also published as: CN103428484B; CN103428484A

Abstract

Disclosed are a transmission method and device, which relate to the technical field of communication networks, and can provide a differentiated transmission service, giving full play to the advantages of scalable video coding. The solution provided by the embodiments of the present invention comprises: judging the type of RLC PDU of a coded data frame for an encapsulated video application; when the type of RLC PDU is a first type, adopting a first processing mode, and performing a first sending processing on the RLC PDU; and when the type of RLC PDU is a second type, adopting a second processing mode, and performing a second sending processing on the RLC PDU. The solution provided by the embodiments of the present invention is suitable to be adopted during the transmission of a video data frame.

Description

Transmission method and device

The present invention relates to the field of communication network technologies, and in particular, to a transmission method and apparatus. Background technique

Currently, when a video application is encoded using a scalable coding method, the video coded data includes base layer coded data frames and other enhancement layer coded data frames. The scalable coding method can form a basic layer with basic image quality, and one or more enhancement layers with additional information. There is a constraint relationship between the base layer and the enhancement layer, and then separately encoded and transmitted. The decoding end can decode the base layer encoded data frame separately, but the decoding of the enhancement layer encoded data frame requires the base layer data to be decoded together with the base layer encoded data frame to obtain the enhanced image effect. For a system using a scalable video coding method, during the transmission process, the video application server can determine the content to be transmitted by judging the network condition: if the network condition is good, the coded data frames of the base layer and the enhancement layer can be simultaneously transmitted; When the network condition is poor, only the base layer encoded data frame is transmitted.

In wireless transmission, the video coding frame of a video application is usually only mapped to one DRB (Data Radio Bearer) of the wireless network, and only one RLC (Radio Link Control) mode is determined. , corresponding to an RLC entity. An RLC AM (Acknowledged Mode) entity, including an RLC AM entity sender and a corresponding RLC AM entity receiver. Summary of the invention

Embodiments of the present invention provide a transmission method and apparatus, which can provide differentiated transmission services and fully utilize the advantages of scalable video coding.

Embodiments of the present invention use the following technical solutions:

A transmission method, including:

Determining a radio link control RLC protocol data unit PDU of the encapsulated video application encoded data frame Types of;

When the type of the RLC PDU is the first type, adopting a first processing manner, and performing a first sending process on the RLC PDU;

When the type of the RLC PDU is the second type, the second processing mode is performed, and the second processing manner is performed on the RLC PDU, where the second processing manner is different from the first processing manner.

A transmission method, including:

Receiving a radio link control of the encapsulated video application coded data frame RLC protocol data unit PDU RLC answer mode The first data packet sent by the AM entity sender;

According to the content included in the first data packet, a corresponding receiving processing mode is used.

A transmission device comprising:

a determining unit, configured to determine a radio link control RLC protocol data unit PDU type of the encapsulated video application encoded data frame;

a processor, configured to: when the type of the RLC PDU is the first type, use a first processing manner, and perform a first sending process on the RLC PDU; and when the type of the RLC PDU is a second type And adopting a second processing manner, and performing a second sending process on the RLC PDU, where the second processing manner is different from the first processing manner.

A transmission device comprising:

a receiver, configured to receive a radio link control of the encapsulated video application coded data frame, an RLC protocol data unit, an RLC response mode to which the PDU belongs, and a first data packet sent by the AM entity sender;

And a processor, configured to use a corresponding receiving processing manner according to the content included in the first data packet.

An embodiment of the present invention provides a method and apparatus for transmitting, by determining a type of a RLC protocol data unit PDU of a radio link that encapsulates a video application coded data frame, and performing different processing according to the type of the RLC PDU. The solution provided by the embodiment of the present invention can provide a differentiated transmission service and fully utilize the advantages of scalable video coding. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will be true. The drawings used in the examples or the description of the prior art are briefly introduced. It is obvious that the drawings in the following description are only some embodiments of the present invention, and are not creative to those skilled in the art. Other drawings can also be obtained from these drawings on the premise of labor.

1 is a flowchart of a transmission method according to Embodiment 1 of the present invention;

2 is a flowchart of another transmission method according to Embodiment 1 of the present invention;

3 is a block diagram of a transmission apparatus according to Embodiment 1 of the present invention;

4 is a block diagram of another transmission apparatus according to Embodiment 1 of the present invention;

5A is a flowchart of a transmission method according to Embodiment 2 of the present invention;

FIG. 5B is a schematic diagram of a transmission method according to Embodiment 1 of the present invention; FIG.

6A is a flowchart of another transmission method according to Embodiment 2 of the present invention;

6B is a schematic diagram of another transmission method according to Embodiment 2 of the present invention;

7 is a flowchart of another transmission method according to Embodiment 2 of the present invention;

8 is a block diagram of a transmission apparatus according to Embodiment 2 of the present invention;

9 is a block diagram of another transmission apparatus according to Embodiment 2 of the present invention;

FIG. 10 is a flowchart of another transmission method according to Embodiment 2 of the present invention. Detailed ways

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, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The technical solution of the present invention can be applied to various wireless networks, for example, a Global System for Mobile Communications (GSM) network, a General Packet Radio Service (GPRS) network, and a code division. Code Division Multiple Access (CDMA) network, Wideband Code Division Multiple Access (WCDMA) network, Time Divi-synchronous Code Division Multiple Access (TD-Division) SCDMA) Network or Long Term Evolution (LTE) network. The base station may be a GSM network, a GPRS network, or a base station (BTS) in a CDMA network, or may be a base station (NodeB) in a WCDMA network, or may be an evolved type in an LTE network. Base station (Evo lut i ona l Node B, referred to as eNB or eNodeB).

In the embodiment of the present invention, the RLC response mode AM entity sender to which the radio link control RLC protocol data unit PDU of the video application coded data frame belongs may be referred to as the network device to which the RLC AM entity sender belongs, for example, may be a base station. Or the user terminal; correspondingly, the RLC acknowledgment mode of the RLC PDU belongs to the RLC AM entity receiver corresponding to the sender of the AM entity, and may refer to the network device to which the receiver of the AM entity belongs, for example, may be a user terminal or a base station.

Example 1

The embodiment of the present invention provides a transmission method, where the execution entity of the method is an RLC AM entity sender (may be referred to as a "sender"). As shown in FIG. 1, the method includes the following steps:

Step 1 01: Determine a type of a radio link control RLC protocol data unit PDU of the encapsulated video application encoded data frame;

Optionally, when the type of the video application coded data frame encapsulated by the RLC PDU is a base layer video application coded data frame, or the type of the video application coded data frame encapsulated by the RLC PDU includes a base layer video application coded data frame and an enhancement. When the layer video application encodes the data frame, the type of the RLC PDU is determined to be the first type. When the type of the video application coded data frame encapsulated by the RLC PDU is the enhanced layer video application coded data frame, the type of the RLC PDU is determined to be the first type. Two types.

Further, in the embodiment of the present invention, the type and the priority may be a mapping relationship, and specifically, the first type may be mapped with a high priority, that is, when it is determined that the type of the RLC PDU is the first type, That is, the priority of the RLC PDU is determined to be a high priority. For example, when the type of the video application coded data frame is a base layer video application coded data frame, or the type of the video application coded data frame includes a base layer video application coded data frame and an enhancement layer video application coded data frame, the RLC PDU is determined. The priority of the RLC PDU is low priority. For example, when the type of the video application encoded data frame is an enhanced layer video application encoded data frame, the priority of the RLC PDU is determined to be prioritized. Step 102: When the type of the RLC PDU is the first type, adopt a first processing manner, and perform a first sending process on the RLC PDU.

Optionally, the method for performing this step includes:

Sending an RLC PDU packet to the RLC AM entity receiver to which the RLC PDU belongs; or applying the first automatic repeat request configuration parameter, and sending the RLC PDU packet to the receiver; or

Sending the type information of the RLC PDU and the RLC PDU data packet to the receiver, so that the receiver performs the corresponding operation according to the type information of the RLC PDU; or

Transmitting the RLC PDU data packet to the receiver, so that the receiver performs a corresponding operation according to the type of the RLC PDU determined by the RLC PDU data packet; or

Resending the RLC PDU packet to the recipient.

Step 103: When the type of the RLC PDU is the second type, adopt a second processing manner, and perform a second sending process on the RLC PDU, where the second processing manner is different from the first processing manner.

Optionally, the method for performing this step includes:

After sending the RLC PDU data packet to the RLC AM entity receiver to which the RLC PDU belongs, the first control packet is sent, so that the receiver does not feed back the new status report; or

Applying the second automatic retransmission request configuration parameter, and sending the RLC PDU data packet to the receiver; or

After transmitting the third control packet to the recipient, the RLC PDU packet is sent so that the recipient does not feed back a new status report.

The first control packet includes: an MR (Mov ing Receiving Window) control PDU, the MR control PDU is used to indicate that the receiver updates according to the value indicated in the MRW control PDU, and does not feed back a new status report. . The third control packet includes: a priority indication control PDU, carrying type information of all RLC PDUs corresponding to the non-acknowledgment-sequence number NACK_SN, or carrying type information of the second type RLC PDU in the RLC PDU corresponding to all NACK_SNs and The ACK_SN in the status report or the type information of the type of the RLC PDU corresponding to all the NACK_SNs and the type of the RLC PDU of the first type and the ACK_SN in the status report.

It should be noted that step 102 and step 103 are performed selectively, that is, according to the specific judgment result of step 101, step 102 is performed or step 103 is performed.

The embodiment of the present invention provides a method for transmitting, determining the type of the RLC PDU of the coded data frame of the encapsulated video application; when the type of the RLC PDU is of the first type, using the first processing mode, and performing the first sending of the RLC PDU When the type of the RLC PDU is the second type, the second processing mode is adopted, and the second processing is performed on the RLC PDU, where the second processing manner is different from the first processing manner. The solution provided by the embodiment of the present invention can provide differentiated transmission services according to different types of RLC PDUs, and fully utilize the advantages of the scalable coding method.

An embodiment of the present invention provides another method for transmitting. The method is implemented by an RLC AM entity receiver (referred to as a "receiver"). As shown in FIG. 2, the method includes:

Step 201: Receive a radio link control that encapsulates a video application coded data frame, and an RLC response mode to which the RLC protocol data unit PDU belongs. The first data packet sent by the AM entity sender.

Step 202: Adopt a corresponding receiving processing manner according to the content included in the first data packet. Sending, to the sender, a first status of the RLC PDU when the first data packet includes an RLC PDU data packet carrying a polling indication; or

When the first data packet includes the first control packet, receiving a first update of the state variable VR(R) value according to the received indication in the first control packet to not feed back a new status report; or, when The first data packet includes type information of the RLC PDU, and when the RLC PDU is of the first type, the second status report of the RLC PDU is sent to the sender; or

When the first data packet includes type information of the RLC PDU, and the RLC PDU is of the second type, performing a second update of the received state variable VR (R) value to not feed back a new status report; or Determining, when the first data packet includes an RLC PDU data packet, a type of the RLC PDU, and when the RLC PDU is of a first type, sending a second status report of the RLC PDU to the sender, where When the RLC PDU is of the second type, performing a second update of the received state variable VR(R) value to not feed back the new status report; or

And performing a third update of the VR ( R ) value when the first data packet includes the retransmitted RLC PDU data packet, and the sequence number of the RLC PDU is the updated VR ( R ); or

When the third packet is included in the first packet, a fourth update of the VR(R) value is performed to not feed back a new status report.

Further, the determining the type of the RLC PDU includes: determining, by parsing the RLC PDU, a type of the RLC PDU, where a type of a video application coded data frame encapsulated by the RLC PDU is a base layer video Applying a coded data frame, or when the type of the video application coded data frame encapsulated by the RLC PDU includes the base layer video application coded data frame and the enhancement layer video application coded data frame, determining that the type of the RLC PDU is a first type; and when the type of the video application coded data frame encapsulated by the RLC PDU is an enhanced layer video application coded data frame, determining that the type of the RLC PDU is a second type;

Or determining the type of the RLC PDU according to the type information of the RLC PDU sent by the sender.

Further, in the embodiment of the present invention, the type and the priority may be a mapping relationship, and specifically, the first type may be mapped with a high priority, that is, when it is determined that the type of the RLC PDU is the first type, That is, the priority of the RLC PDU is determined to be a high priority. For example, when the type of the video application coded data frame is a base layer video application coded data frame, or the type of the video application coded data frame includes a base layer video application coded data frame and an enhancement layer video application coded data frame, the RLC PDU is determined. The priority of the RLC PDU is low priority. For example, when the type of the video application coded data frame is an enhancement layer video application coded data frame, the priority of the RLC PDU is judged to be prioritized.

An embodiment of the present invention provides a method for transmitting, by receiving a coded data frame of a packaged video application. The RLC PDU data packet sent by the sender of the RLC acknowledgment mode AM entity to which the RLC protocol data unit PDU belongs; parsing the RLC PDU data packet, determining the type of the RLC PDU; when the type of the RLC PDU is the first type, The first receiving processing mode is used when the type of the RLC PDU is the second type, where the second receiving processing mode is different from the first receiving processing mode. The solution provided by the embodiment of the present invention can provide a differentiated transmission service and fully utilize the advantages of scalable video coding.

The embodiment of the present invention provides a transmission device, which may be an RLC AM entity sender (may be referred to as a "sender," for short). As shown in FIG. 3, the device includes: a determining unit 301, a processor 302, and a determining unit 301. a type of a radio link control RLC protocol data unit PDU for determining a coded data frame of the encapsulated video application;

Optionally, the first determining module in the determining unit 301 is configured to: when the type of the video application encoded data frame encapsulated by the RLC PDU is a base layer video application encoded data frame, or when the RLC PDU encapsulates the video application encoded data frame When the type includes the base layer video application coded data frame and the enhanced layer video application coded data frame, the type of the RLC PDU is determined to be the first type. Further, in the embodiment of the present invention, the type and the priority may be a one-to-one mapping relationship. Specifically, the first type may be mapped to a high priority, that is, when it is determined that the type of the RLC PDU is the first type, that is, the priority of the RLC PDU is determined to be a high priority. For example, when the type of the video application coded data frame is a base layer video application coded data frame, or the type of the video application coded data frame includes a base layer video application coded data frame and an enhancement layer video application coded data frame, the RLC PDU is determined. Priority is high priority;

The second determining module in the determining unit 301 is configured to determine that the type of the RLC PDU is the second type when the type of the video application encoded data frame encapsulated by the RLC PDU is an enhanced layer video application encoded data frame. Further, the second type may be mapped to the low priority one by one, that is, when it is determined that the type of the RLC PDU is the second type, that is, the priority of the RLC PDU is determined to be the priority. For example, when the type of the video application coded data frame is an enhancement layer video application coded data frame, the priority of the RLC PDU is judged to be a low priority.

The processor 302 is configured to: when the type of the RLC PDU is the first type, use the first processing manner, And performing a first sending process on the RLC PDU; and when the type of the RLC PDU is the second type, adopting a second processing manner, and performing a second sending process on the RLC PDU, where the second processing manner is different from the first processing manner .

Further, the first processing module in the processor 302 is configured to: when the type of the RLC PDU is the first type, send the RLC PDU data packet to the RLC AM entity receiver to which the RLC PDU belongs; or, the processor 302 The second processing module is configured to: when the type of the RLC PDU is the first type, apply the first automatic retransmission request configuration parameter, and send the RLC PDU data packet to the receiver; or the third processing module in the processor 302, When the type of the RLC PDU is the first type, the type information of the RLC PDU and the RLC PDU data packet are sent to the receiver, so that the receiver performs the corresponding operation according to the type information of the RLC PDU; or

a third processing module in the processor 302, configured to send the RLC PDU data packet to the receiver, so that the receiver performs the corresponding operation according to the type of the RLC PDU determined by the RLC PDU data packet. ;

Further, the fourth processing module in the processor 302 is configured to: after the RLC PDU data packet is sent to the RLC AM entity receiver to which the RLC PDU belongs, send the first control packet, so that the type of the RLC PDU is the second type, so that Cause the recipient not to feed back a new status report; or,

a fifth processing module in the processor 302, configured to: when the type of the RLC PDU is the second type, apply a second automatic retransmission request configuration parameter, and send the RLC PDU data packet to the receiver; or, in the processor 302 a sixth processing module, configured to: when the type of the RLC PDU is the second type, send the type information of the RLC PDU and the RLC PDU data packet to the receiver, so that the receiver performs the corresponding operation according to the type information of the RLC PDU; or

a sixth processing module in the processor 302, configured to send the RLC PDU data packet to the receiver, so that the receiver performs a corresponding operation according to a type of the RLC PDU determined by the RLC PDU data packet; or ,

a seventh processing module in the processor 302, configured to resend the RLC PDU data packet to the receiver when the type of the RLC PDU is the first type; or

An eighth processing module in the processor 302, configured to: when the type of the RLC PDU is a second type And sending, after sending the third control packet to the receiver, the RLC PDU data packet, so that the receiver does not feed back a new status report.

It should be noted that the sender in the embodiment of the present invention may be a base station (such as an evolved base station) or a user terminal. In addition, this embodiment may further provide another embodiment, that is, including a processor, which may implement the functions of the determining unit 301 and the processor 302 in the embodiment, that is, the processor performs the judgment of the RLC PDU. The functionality of the type and the ability to differentiate according to the different types of RLC PDUs.

The embodiment of the present invention provides a transmission apparatus, where the determining unit determines the type of the RLC PDU that encapsulates the encoded data frame of the video application, and the processor is configured to adopt the first processing mode when the type of the RLC PDU is the first type, and The RLC PDU performs the first sending process; and when the RLC PDU type is the second type, the second processing mode is used, and the RLC PDU is subjected to the second sending process, where the second processing mode is different from the first processing mode. The solution provided by the embodiment of the present invention can provide differentiated transmission services and fully utilize the advantages of scalable video coding.

The embodiment of the present invention provides a transmission device, which may be an RLC AM entity receiver (referred to as a "receiver"). As shown in FIG. 4, the device includes: a receiver 401, a processor 402;

a receiver 401, configured to receive a radio link control of the encapsulated video application coded data frame, an RLC protocol data unit, an RLC response mode to which the PDU belongs, and a first data packet sent by the AM entity sender;

The processor 402 is configured to use a corresponding receiving processing manner according to the content included in the first data packet.

Further, the first processing module in the processor 402 is configured to send, when the first data packet includes an RLC PDU data packet carrying a polling indication, to send, by the sender, a first status report of the RLC PDU. Or,

a second processing module in the processor 402, configured to: when the first data packet includes the first control packet, perform a first receiving state variable VR(R) according to the received indication in the first control packet Update to not report a new status report; or,

a third processing module in the processor 402, configured to: when the first data packet includes type information of an RLC PDU, and the RLC PDU is of a first type, send the RLC PDU to the sender Second status report; or,

a fourth processing module in the processor 402, configured to: when the first data packet includes type information of the RLC PDU, and the RLC PDU is of the second type, perform a second value of the received state variable VR (R) Update to not report a new status report; or,

a determining module in the processor 402, configured to determine a type of the RLC PDU when the first data packet includes an RLC PDU data packet, and a fifth processing module in the processor 402, configured to: when the RLC PDU is the first In a type, the second state 4 of the RLC PDU is sent to the sender; the sixth processing module in the processor 402 is configured to receive the state variable VR when the RLC PDU is of the second type. a second update of the (R) value to report back to the new status; or

The seventh processing module in the processor 402 is configured to: when the first data packet includes the retransmitted RLC PDU data packet, and the sequence number of the RLC PDU is the updated VR (R), perform VR (R) The third update of the value; or,

The eighth processing module of the processor 402 is configured to perform a fourth update of the VR (R) value to not feed back the new status report when the third data packet is included in the first data packet.

Further, the determining module is specifically configured to: determine, by parsing the RLC PDU, a type of the RLC PDU, where, when the type of the video application encoded data frame encapsulated by the RLC PDU is a base layer video application encoded data frame, Or determining, when the type of the video application coded data frame encapsulated by the RLC PDU includes the base layer video application coded data frame and the enhancement layer video application coded data frame, determining that the type of the RLC PDU is a first type; When the type of the video application coded data frame encapsulated by the RLC PDU is an enhanced layer video application coded data frame, determining that the type of the RLC PDU is a second type;

Or determining the type of the RLC PDU according to the type information of the RLC PDU sent by the sender;

Further, in the embodiment of the present invention, the type and the priority may be a mapping relationship, and specifically, the first type may be mapped with a high priority, that is, when it is determined that the type of the RLC PDU is the first type, That is, the priority of the RLC PDU is determined to be a high priority. For example, when the type of the video application coded data frame is a base layer video application coded data frame, or the video application encodes a data frame class When the type includes the base layer video application coded data frame and the enhancement layer video application coded data frame, it is judged

The priority of the RLC PDU is high priority;

The second type can be mapped to the priority of the RLC PDU, that is, when the type of the RLC PDU is determined to be the second type, that is, the priority of the RLC PDU is determined to be a low priority. For example, when the type of the video application coded data frame is an enhanced layer video application coded data frame, the priority of the RLC PDU is judged to be a low priority.

It should be noted that the receiver in the embodiment of the present invention may be a user terminal or a base station. Embodiments of the present invention provide a transmission apparatus, which can provide differentiated transmission services and fully utilize the advantages of scalable video coding.

Example 2

As shown in FIG. 5A, the method includes the following steps: Step 501: A video application sender encodes data of a video application to obtain a video application coded data frame.

The video application sender can be a video application server or a user terminal. The video application may encode the data of the video application in a scalable coding manner, and the encoded video application coded data frame may include a base layer video application coded data frame and/or an enhancement layer video application coded data frame.

Further, the video application sender sends the video application encoded data frame to the sender.

Step 502: The sender determines the type of the radio link control RLC protocol data unit PDU of the encapsulated video application coded data frame.

The sender in this step may be a base station or a user terminal. Specifically, when the video application sender is a video application server, the sender in this step is a base station, and the video application server sends the encoded video application coded data frame to the base station, and then the base station determines the encapsulated video application coded data frame. The radio link controls the type of RLC protocol data unit PDU. When the sender of the video application is the user terminal, the sender in this step is the user terminal. According to the protocol, the user terminal sends the video application coded data frame of the application layer to the wireless transmission layer.

The sender can judge according to the type of the encoded data frame of the video application. Among them, video application editing The code data frame type includes a base layer coded data frame and an enhancement layer coded data frame. The sender can pass

DPI (Deep Packet Interpretation), which determines the frame type of the video application coded data. When the type of the video application coded data frame encapsulated by the RLC PDU is the base layer video application coded data frame, or is encapsulated by the RLC PDU. When the type of the video application coded data frame includes the base layer video application coded data frame and the enhancement layer video application coded data frame, the type of the RLC PDU is determined to be the first type; and the type of the video application coded data frame encapsulated by the RLC PDU When the encoded data frame is applied for the enhancement layer video, it is determined that the type of the RLC PDU is the second type.

Further, in the embodiment of the present invention, the type and the priority may be a mapping relationship, and specifically, the first type may be mapped with a high priority, that is, when it is determined that the type of the RLC PDU is the first type, That is, the priority of the RLC PDU is determined to be a high priority. For example, when the type of the video application coded data frame is a base layer video application coded data frame, or the type of the video application coded data frame includes a base layer video application coded data frame and an enhancement layer video application coded data frame, the RLC PDU is determined. Priority is high priority;

The second type can be mapped to the priority of the 4th, that is, when the type of the RLC PDU is determined to be the second type, the priority of the RLC PDU is determined to be a low priority. For example, when the type of the video application coded data frame is an enhanced layer video application coded data frame, the priority of the RLC PDU is judged to be a low priority.

It should be noted that DP I is only a means for detecting the type of video data frame, and the embodiment of the present invention is not limited to the method. Other methods capable of judging the type of detected video data frame are also within the scope of the present invention.

Step 503: When the type of the RLC PDU is the first type, the RLC acknowledgment mode of the RLC PDU to which the RLC PDU belongs is sent by the receiver of the RLC PDU.

It should be noted that when the sender is a base station, the receiver is a user terminal; when the sender is a user terminal, the receiver is a base station.

Step 504: When the type of the RLC PDU is the second type, after receiving the RLC PDU data packet, the RLC AM entity receiving party that sends the RLC PDU sends the first control packet, so that the receiver does not feed back the new status report. It should be noted that step 503 and step 504 are optional steps, that is, according to the type of the RLC PDU determined in step 502, it is determined to perform step 503 or perform step 504.

Optionally, after the second type of RLC PDU is sent, the sending of the first control packet may be controlled by using a timer, that is, after sending the second type of RLC PDU, the sender starts a timer. After the timer expires, the first control packet is sent to the corresponding receiver. The duration of the timer may be configured by the base station through RRC (Radio Resource Control) signaling or MAC (Media Access Control) CE (Control Element), or may be mandatory for the protocol. value.

It should be noted that different video coding frames have different requirements on QoS (Quality of Service). For example, the basic layer data frame requires high reliability, so it is desirable to retransmit more times, but the enhancement layer data frame does not need to be so. High reliability, if the channel conditions are not good, retransmission multiple times can guarantee the transmission success, but from the perspective of reception, the enhancement of video quality is limited, and the air interface resources are wasted to some extent. Therefore, when the system is heavily loaded, the solution provided by the embodiment of the present invention, that is, when the RLC PDU is of the second type, after the RLC PDU is sent, the first control packet may be sent to the receiver to control the receiving of the receiver. Window operation. Specifically, the first control packet may include an MRW control PDU, and the MRW control PDU is used to indicate that the receiver updates according to the value indicated by the MRW control PDU, and does not feed back the new status report.

Step 505: The receiver receives the first data packet sent by the sender.

The first data packet may include an RLC PDU data packet, and may also include a first control packet sent by the sender.

Step 506: Adopt a corresponding receiving processing manner according to the content included in the first data packet. When the RLC PDU packet is included in the first packet, the RLC PDU reception process is performed accordingly, and the reception window parameters are updated accordingly. Further, if the received RLC PDU carries a polling indicator poll, the sending of the status report is triggered, where the polling indicator poll is a field in the PDU, which is used to indicate that the receiver actively triggers the status report.

Optionally, when the first data packet includes the first control packet, the receiver receives the first control packet sent by the sender, and receives the state variable VR (R) according to the received indication in the first control packet. The first update to not report a new status report;

Update VR (Dish) to the sum of the new VR(R) and receive window size. Among them, VR (MR) indicates the upper edge of the receiving window, and VR (R) indicates the lower edge of the receiving window. These two variables together represent the receiving window.

It should be noted that the subsequent corresponding operations are performed after the VR ( R ) value is updated. Specifically, all AMD PDUs and AMD PDU segments except the receiving window are assembled, and the AMD PDU segments within the successfully received SN (ser i es number) = VR (R) are assembled in sequence, that is, RLC AM The receiver entity will block any byte portion of one or more AMD PDUs outside the receiving window and VR (R) corresponding to the sequential byte s egment in the AMD PDU, remove the RLC header, and assemble into one or more RLC SDUs. Submitted to the upper layer; otherwise, if one or more of the above byte segments cannot be assembled into one or more complete RLC SDUs, then the bytes segmen t are discarded. The assembled RLC SDU is then submitted to the upper level.

For example, one RLC SDU is divided into two RLC AMD PDUs for transmission. One of the two AMD PDUs is correctly received, but the other part of the byte segment is successfully received, and the other part of the segment is not received. Successfully received, then there is no way for the RLC SDU that is not fully received to be correctly restored on the receiving entity, and the correctly received part is also discarded.

For example, in the schematic diagram of the transmission method shown in FIG. 5B, the video application sender is a video application server, the sender is a base station, and the receiver is a user terminal as an example for description. Specifically, the video application server encodes the data of the video application, obtains a video application encoded data frame, and sends the video application encoded data frame to the base station; the base station receives the video application encoded data frame sent by the video application server, and then determines the encapsulated video application code. The type of RLC PDU for the data frame. When the type of the RLC PDU is the first type, the RLC PDU data packet is sent to the user terminal; when the type of the RLC PDU is the second type, the RLC PDU data packet and the first control packet are sent to the user terminal; the user terminal receives the RLC. After the PDU data packet and the first control packet, the VR(R) value is updated according to the indication in the first control packet.

An embodiment of the present invention provides a method for transmitting, by determining a type of RLC PDU of an encapsulated video application encoded data frame: performing different operations according to different types of RLC PDUs, so that the advantages of the scalable coding method are fully utilized. The embodiment of the present invention provides another transmission method. As shown in FIG. 6A, the method includes: Step 601: A video application sender encodes data of a video application to obtain a video application encoded data frame.

The video application sender can be a video application server or a user terminal. Specifically, the data of the video application may be encoded in a scalable coding manner, and the encoded video data frame may include a base layer encoded data frame and/or an enhancement layer encoded data frame.

Step 602: The base station configures different ARQ (Audio Retical Request) parameters for the RLC AM entity corresponding to the DRB that carries the video application coded data frame, and uses the RRC connection reconfiguration process to set different ARQs. The parameter is sent to the user terminal;

The base station can configure different ARQ parameters for different types of RLC PDUs that encapsulate the data frame of the video application according to the transmission protocol. For example, the maximum number of retransmissions of different types of RLC PDUs may be configured to different values. Specifically, the maximum number of retransmissions configured for the first type (basic type) of RLC PDUs is the second type (enhanced). The RLC PDU is configured with a maximum number of retransmissions, that is, the basic RLC PDU is retransmitted multiple times to achieve better transmission quality. Alternatively, the parameter polling protocol data unit "po ll PDU" can be different according to the RLC PDU. The type is configured to a different value. Specifically, the polling protocol data unit value configured for the first type (basic type) RLC PDU is lower than the polling protocol data unit value configured for the second type (enhanced) RLC PDU. , that is, the basic type of RLC PDU can be sent as soon as possible; or the parameter polling byte "po ll Byte" can be configured to different values according to different types of RLC PDUs, specifically, the first type ( The basic type of RLC PDU configuration has a lower polling byte value than the polling byte value configured for the second type (enhanced) RLC PDU, ie, the basic type RLC PDU is desired. Status reports can be sent as soon as possible.

Step 603: The user terminal receives different ARQ parameters that are configured by the base station according to different types of RLC PDUs, and configures the ARQ parameters.

It should be noted that the order of execution between step 601 and step 602 and step 603 is not fixed, that is, step 601 may be performed first according to the method provided in this embodiment, and then step 602 and step 603 may be performed, or step 602 may be performed first. In step 603, step 601 is performed.

Step 604, in the video transmission process, the sender determines the encoded video application encoded data frame. Type of RLC PDU;

The sender in this step may be a base station or a user terminal. It should be noted that, in FIG. 6A, the sender is the base station, and the receiver is the user terminal as an example. Specifically, when the video application sender is a video application server, the sender in this step is a base station, and the video application server sends the encoded video application coded data frame to the base station, and then the base station determines the encapsulated video application coded data frame. The radio link controls the type of RLC protocol data unit PDU. When the sender of the video application is the user terminal, the sender in this step is the user terminal, and the video application coded data frame of the application layer is sent to the wireless transmission layer according to the protocol, so that the user terminal breaks the video application coded data frame. The radio link controls the type of RLC protocol data unit PDU.

The video application coded data frame type includes a base layer coded data frame and an enhancement layer coded data frame. The sender can determine the video application encoded data frame type through DP I. Specifically, when the type of the video application coded data frame encapsulated by the RLC PDU is a base layer video application coded data frame, or the type of the video application coded data frame encapsulated by the RLC PDU includes a base layer video application coded data frame and an enhancement layer. When the video application encodes the data frame, it determines that the type of the RLC PDU is the first type; the first type of RLC PDU may also be referred to as a basic RLC PDU, or a high priority RLC PDU; when the RLC PDU encapsulates the video application code When the type of the data frame is an enhanced layer video application coded data frame, the type of the RLC PDU is determined to be the second type; the second type of RLC PDU may also be referred to as an enhanced RLC PDU, or a low priority RLC PDU.

The second type can be mapped to the low priority one by one, that is, when it is determined that the type of the RLC PDU is the second type, that is, the priority of the RLC PDU is determined to be a low priority. For example, when the type of the video application coded data frame is an enhanced layer video application coded data frame, the priority of the RLC PDU is determined as Low priority.

Step 605: When the type of the RLC PDU is the first type, apply the first automatic retransmission request configuration parameter, and send the RLC PDU data packet to the receiver.

It should be noted that the receiver may be a user terminal or a base station. When the sender is a base station, the receiver is a user terminal; when the sender is a user terminal, the receiver is a base station.

Optionally, when the first automatic retransmission request configuration parameter is the maximum number of retransmissions, when the sender decides to retransmit an RLC PDU or an RLC PDU segment, the number of retransmissions of the RLC PDU is accumulated. When the accumulated number of retransmissions reaches the maximum retransmission threshold of the type of the RLC PDU, the RLC PDU is executed to reach the maximum number of retransmissions. Specifically, if the first type of RLC PDU reaches the maximum number of retransmissions, it reports to the RRC layer (Radio Resource Control) to trigger the RRC connection reestablishment process.

Optionally, if a polling protocol data unit value is configured for the first type of RLC PDU, the sender adds a first type of RLC PDU each time, and the first type of the cumulative protocol technical unit value increases by one. When the first type of cumulative protocol technology unit value is greater than or equal to the configured polling protocol data unit value, a polling indication is sent to the recipient. The polling indicator po l l is a field in the PDU, which is used to indicate that the receiver actively triggers the status report.

Optionally, if a polling byte value is configured for the first type of RLC PDU, and the sender transmits a new type of RLC PDU for each new one, the accumulated byte value of the first type increases the sent RLC PDU byte. Size, when the accumulated byte value of the first type is greater than or equal to the configured polling byte value, a polling indication is sent to the recipient.

Step 606: When the type of the RLC PDU is the second type, apply a second automatic retransmission request configuration parameter, and send the RLC PDU data packet to the receiver.

It should be noted that step 605 and step 606 are optional steps, that is, according to the type of the RLC PDU determined in step 604, it is determined to perform step 605 or perform step 606. Optionally, when the second automatic repeat request configuration parameter is the maximum number of retransmissions, when the sender decides to retransmit a certain RLC PDU or RLC PDU segment, the number of retransmissions of the RLC PDU is accumulated. When the accumulated number of retransmissions reaches the maximum retransmission threshold of the type of the RLC PDU, the operation of the RLC PDU to reach the maximum number of retransmissions is performed. Specifically, if the second type of RLC PDU reaches the maximum number of retransmissions, the first control packet is sent to the receiver, so that the receiver does not feed back the new status report. The first control packet includes: a mobile receiving window MRW Control PDU, the MRW Control PDU is used to instruct the receiving party to update according to the value indicated in the W Control PDU, and does not feed back a new status report.

Optionally, if a polling protocol data unit value is configured for the second type of RLC PDU, the sender increases the value of the first type of the cumulative protocol technology unit by 1 each time a new type of RLC PDU is newly transmitted by the sender. When the second type of cumulative protocol technology unit value is greater than or equal to the configured polling protocol data unit value, a polling indication is sent to the recipient. The polling indicator po l l is a field in the PDU, which is used to indicate that the receiver actively triggers the status report.

Optionally, if a polling byte value is configured for the second type of RLC PDU, the sender adds a second type of RLC PDU for each new transmission, and the second type of accumulated byte value increases the sent RLC PDU byte. Size, when the accumulated byte value of the second type is greater than or equal to the configured polling byte value, a polling indication is sent to the recipient.

Step 607: The receiver receives the first data packet sent by the sender.

Step 608: The receiving end uses the corresponding receiving processing manner according to the content included in the first data packet.

When the RLC PDU data packet can be included in the first data packet, the RLC PDU reception processing is performed accordingly, and the reception window parameters are updated accordingly. Optionally, when receiving the RLC PDU packet carrying the polling indication, sending a status report to the sender.

Optionally, when the first control packet is included in the first data packet, receiving the first control packet sent by the sender, and receiving the state variable VR (R) value according to the indication in the first control packet. An update to not feedback the new status report, the specific update VR (MR) for the new VR (R) and receive window The sum of the sizes. Where VR (MR) represents the upper edge of the receive window and VR (R) represents the lower edge of the receive window, these two variables collectively represent the receive window.

It should be noted that the subsequent corresponding operations are performed after the VR (R) value is updated. Specifically, all AMD PDUs and AMD PDU segments except the receiving window are assembled, and the AMD PDU segments within the successfully received SN (series number) = VR (R) are assembled in sequence, that is, the RLC AM receiver The entity will fall in any byte part segment of one or more AMD PDUs outside the receiving window and the sequential byte segment in the VR (R) corresponding AMD PDU, remove the RLC header, and assemble into one or more RLC SDUs and submit them to the upper layer. Otherwise, if one or more of the above-mentioned byte segments cannot be assembled into one or more complete RLC SDUs, these byte segments are discarded. The assembled RLC SDU is then submitted to the upper level.

For example, in the schematic diagram of the transmission method shown in FIG. 6B, the video application sender is the user terminal, the sender is the user terminal, and the receiver is the base station as an example for description. Specifically, (1) the base station first configures different automatic retransmission request configuration parameters, and sends the configured different automatic retransmission request configuration parameters to the user terminal; after receiving the user terminal, the application configures different automatic retransmission request configurations. parameter. (2) the user terminal application layer encodes the data of the video application, obtains the video application encoded data frame, and sends the video application encoded data frame to the user terminal wireless transmission layer; (3) the user terminal determines the RLC of the encapsulated video application encoded data frame. The type of PDU. (4) When the type of the RLC PDU is the first type, applying the first automatic retransmission request configuration parameter, and sending the RLC PDU data packet to the base station; (5) when the type of the RLC PDU is the second type, applying the second Automatically retransmit the request configuration parameter, and send the RLC PDU data packet to the base station; (6) after receiving the RLC PDU data packet, the base station sends a status report according to the polling indication; or, receives the first control packet sent by the sender, and according to The received indication in the first control packet updates the receive state variable VR(R) value.

An embodiment of the present invention provides a method for transmitting, by determining a coded data frame of a packaged video application. The type of RLC PDU, applying different automatic retransmission request parameters according to the type of judgment. The solution provided by the embodiment of the present invention can provide the differentiated transmission service for different types of RLC PDUs, and fully utilize the advantages of scalable video coding.

An embodiment of the present invention provides another transmission method. As shown in FIG. 7, the method includes: Step 701: A video application sender encodes data of a video application to obtain a video application coded data frame.

Step 702: The base station configures different ARQ parameters for the RLC AM entity corresponding to the DRB that carries the coded data frame of the video application, and sends different ARQ parameters to the user terminal through the RRC connection reconfiguration process.

The base station can configure different ARQ parameters for different priorities of the RLC PDUs of the encapsulated video application coded data frame according to the transmission protocol. For example, you can configure only high-priority RLC PDUs to be advertised; you can configure different timers for different priority RLC PDU timers t_Reorder ing.

Step 703: The user terminal receives different ARQ parameters configured by the base station according to different RLC PDU priorities, and configures the ARQ parameters.

It should be noted that the order of execution between step 701 and step 702 and step 703 is not fixed, that is, step 701 may be performed first according to the method provided in this embodiment, and then step 702 and step 703 may be performed, or step 702 may be performed first. In step 703, step 701 is performed again.

Step 704: In the video transmission process, the sender determines the type of the RLC PDU that encapsulates the video application encoded data frame.

The video application coded data frame type includes a base layer coded data frame and an enhancement layer coded data frame. The sender can judge the video application encoded data frame type through DPI. Specifically, when the type of the video application coded data frame encapsulated by the RLC PDU is a base layer video application coded data frame, or the type of the video application coded data frame encapsulated by the RLC PDU includes a base layer video application code number When the frame and the enhancement layer video application encode the data frame, the type of the RLC PDU is determined to be the first type; the first type of RLC PDU may also be referred to as a basic RLC PDU, or a high priority RLC PDU; when the RLC PDU is When the type of the encapsulated video application coded data frame is an enhanced layer video application coded data frame, the type of the RLC PDU is determined to be the second type; the second type of RLC PDU may also be referred to as an enhanced RLC PDU, or a low priority RLC PDU.

It should be noted that step 704 is an optional step aggregation. Step 704 is performed only when the receiver determines the type of the RLC PDU packet by using the type information sent by the sender in step 706.

Step 705: The sender sends the type information of the RLC PDU and the RLC PDU data packet to the receiver, or the sender sends the RLC PDU data packet to the receiver.

Optionally, the sender sends the type information of the determined RLC PDU data packet to the receiver, so that the receiver performs the corresponding operation according to the type information of the RLC PDU. Specifically, by carrying the type information in the RLC PDU, the corresponding field carrying the type information is added in the header of the RLC PDU. And sent to the recipient. The type information may be type information of the current RLC PDU itself; or may be the type of the first N transmitted RLC PDUs, where N is an integer greater than or equal to 1. It should be noted that, in the embodiment of the present invention, the operations of adding or subtracting the sequence number SN of the RLC PDU are both addition and subtraction of the size of the transmission or reception window. For example, if the sending or receiving window size is 512, the SN of the current RLC PDU is 1 and N is 2, then the current RLC PDU carries the type of the RLC PDU whose SN is 51 1.

Optionally, the RLC control PDU is preset, and the sender sends the RLC control PDU to the receiver, where the RLC control PDU is used to carry the type of the current RLC PDU or the type information of the sent RLC PDU. Optionally, when the sender sends the RLC control PDU to the receiver, the RLC control PDU may be sent to the receiver in a control packet, for example, the second control packet is sent to the receiver, where the second control packet is sent. The preset RLC control PDU is used, and the RLC control PDU is used to carry the type of the current RLC PDU or the type of the RLC PDU that has been sent.

It should be noted that, only in step 610, when the receiver determines the RLC PDU packet type by using the type information sent by the sender, the sender needs to send the type information of the determined RLC PDU packet to the receiver.

Step 706: The receiver receives the RLC PDU data packet sent by the sender, and determines the type of the RLC PDU.

Specifically, the type of the RLC PDU is determined by parsing the RLC PDU, where the type of the video application coded data frame encapsulated by the RLC PDU is a base layer video application coded data frame, or the video application coded data frame encapsulated by the RLC PDU When the type includes the base layer video application coded data frame and the enhancement layer video application coded data frame, the type of the RLC PDU is determined to be the first type; when the type of the video application coded data frame encapsulated by the RLC PDU is the enhancement layer video application code In the case of a data frame, it is determined that the type of the RLC PDU is the second type;

Further, in the embodiment of the present invention, the type and the priority may be a mapping relationship, and specifically, the first type may be mapped with a high priority, that is, when it is determined that the type of the RLC PDU is the first type, That is, the priority of the RLC PDU is determined to be a high priority. The second type can be mapped with a priority, that is, when it is determined that the type of the RLC PDU is the second type, that is, the priority of the RLC PDU is determined to be a low priority. The specific judgment manner may refer to step 704 specifically; Or determining the type of the RLC PDU according to the type information of the RLC PDU sent by the sender. Step 707: When the type of the RLC PDU is the first type, the receiver applies a third automatic retransmission request configuration parameter.

The third automatic retransmission request configuration parameter is a parameter configured when performing step 702 and step 703. Specifically, when the RLC PDU is the first type of RLC PDU, the second status report is triggered, for the first type of RLC PDU. Send a second status report.

Step 708: When the type of the RLC PDU is the second type, the receiver applies a fourth automatic retransmission request configuration parameter.

The fourth automatic repeat request configuration parameter is a parameter configured when executed in steps 702 and 703. Specifically, a second update of the received state variable VR(R) value is performed to not feed back the new status report.

Specifically, receiving the second control packet, moving the receiving window according to the type information carried by the preset RLC control PDU in the second control packet, and updating the VR (R) value to the SN of the first RLC PDU, where the first RLC PDU The first SN (ser i es number , serial number) is larger than the SN of the current RLC PDU, and there is no RLC PDU that is completely received.

It should be noted that the subsequent corresponding operations are performed after the VR ( R ) value is updated. Specifically, all AMD PDUs and AMD PDU segments except the receiving window are assembled, and the successfully received AMD PDU segments in the SN (ser es n ber, serial number) = VR (R) are assembled in order, that is, The RLC AM receiver entity will block any byte portion of one or more AMD PDUs outside the receiving window and VR (R) corresponding to the sequential byte s egment in the AMD PDU, remove the RLC header, and assemble into one or more The RLC SDU is delivered to the upper layer; otherwise, if the one or more byte segments cannot be assembled into one or more complete RLC SDUs, the bytes segmen t are discarded. The assembled RLC SDU is then submitted to the upper level.

An embodiment of the present invention provides a method for transmitting, by determining a coded data frame of a packaged video application. The type of RLC PDU performs different processing according to different types of determining RLC PDUs, so that the advantages of the scalable coding method are fully utilized.

An embodiment of the present invention provides another transmission method. As shown in FIG. 10, the method includes: Step 1001: A video application sender encodes data of a video application to obtain a video application coded data frame.

Step 1002: The sender sends the RLC PDU data packet encapsulated with the video application coded data frame to the receiver.

The sender in this step may be a base station or a user terminal. Specifically, when the video application sender is a video application server, the sender in this step is a base station, and the video application server sends the encoded video application encoded data frame to the base station, and then the base station encapsulates the video application encoded data frame. The RLC PDU data packet is sent to the user terminal. When the sender of the video application is the user terminal, the sender in this step is the user terminal. According to the protocol, the user terminal sends the video application coded data frame of the application layer to the wireless transmission layer.

Step 1 003: When the status report is triggered, the receiving direction sends a status report to the sender. Specifically, the condition that the status report is triggered is: if the receiver receives the RLC PDU with the polling indication po ll, the receiving direction is sent to the sender. Send status report; If the reordering timer expires, the receiver sends a status report to the sender.

Step 1 004, the sender receives the status report, and determines the type of the RLC PDU corresponding to all NACKs (Not Acknowledgement)-SNs;

Specifically, the RLC PDU corresponding to the ACK-S indicates that the S of the RLC PDU is AC_SN _D. In addition, the status report may carry one or more NACK_SNs, so the RLC PDU corresponding to the NACK-SN may be one or more .

Specifically, the sender can determine the bearer video application according to the type of the video application encoded data frame. The type of RLC PDU for the code data frame. The video application coded data frame type includes a base layer coded data frame and an enhancement layer coded data frame. The sender may determine the video application coded data frame type by using the DP I, when the type of the video application coded data frame encapsulated by the RLC PDU is a base layer video application coded data frame, or when the RLC PDU encapsulates the video application coded data frame. When the type includes the base layer video application coded data frame and the enhancement layer video application coded data frame, the type of the RLC PDU is determined to be the first type; and the type of the video application coded data frame encapsulated by the RLC PDU is the enhanced layer video application coded data. In the case of a frame, it is determined that the type of the RLC PDU is the second type.

Step 1 005: When the type of the RLC PDU is the first type, the first type of RLC PDU is retransmitted; when the type of the RLC PDU is the second type, the third control packet is sent;

Specifically, for a status report, when there is a second type of RLC PDU in the RLC PDU corresponding to the NACK_SN, a third control packet is sent; the third control packet may be: a priority indication control PDU, carrying all NACKs Type information of the RLC PDU corresponding to the SN, or carrying the type information of the second type RLC PDU in the RLC PDU corresponding to all the NACK_SNs, and the ACK (Acknowledgement)-SN in the status report, or carrying all NACK-SN correspondences RLC PDU The type is the type information of the first type RLC PDU and the ACK_SN in the status report.

The third control packet has a higher transmission priority than all RLC PDU packets.

Step 1006: The receiver receives the first data packet sent by the sender.

The first data packet may include a retransmitted RLC PDU data packet, or the first data packet includes a third control packet.

Step 1007: The receiver uses the corresponding receiving processing mode according to the content included in the first data packet.

Optionally, when the first data packet includes the retransmitted RLC PDU data packet, the receiver receives the first type RLC PDU retransmitted by the sender, and the SN of the first type RLC PDU is the updated VR (R ), a third update to VR(R) that does not trigger the transmission of a new status report during the update of VR(R).

Specifically, if the SN of the first type of RLC PDU is greater than the ACK_SN, the VR (R) is updated to the first SN is greater than the SN of the first type of RLC PDU, and the RLC PDU is not completely received;

Otherwise, if there is a first type of RLC PDU that is not correctly received between the SN and the ACK_SN of the first type of RLC PDU, the VR (R) is updated to the first SN is greater than the SN of the first type of RLC PDU, and is not completed. The first type of RLC PDU received; otherwise, if the first type of RLC PDU is completely correctly received between the SN and the ACK_SN of the first type of RLC PDU, the update VR(R) to the first SN is greater than ACK_SN, And there is no RLC PDU that is completely received.

Optionally, when the third control packet is included in the first data packet, the fourth update of the received state variable VR ( R ) value is performed to not trigger the sending of the new status report.

Specifically, the receiver receives the third control packet, moves the receiving window according to the type information carried in the third control packet, and updates the VR(R) value to the SN of the first RLC PDU, where if all the NACK_SN correspond to the RLC PDU The type is all the second type RLC PDU, then the first RLC PDU is the first SN is larger than the ACK_SN, and the RLC PDU is not completely received; otherwise, the first RLC PDU is the first one of the RLC PDUs corresponding to all the NACK_SN The first type of RLC PDU that is completely received.

It should be noted that subsequent operations are performed after the VR ( R ) value is updated. Specifically, all AMD PDUs and AMD PDU segments except the receiving window are assembled, and the successfully received SNs are assembled in order. (ser i es number , sequence number) = AMD PDU segment within VR ( R ), ie any byte portion of one or more AMD PDUs that the RLC AM receiver entity will fall outside the receive window and VR (R Corresponding to the sequential byte s egment in the AMD PDU, the RLC header is removed, assembled into one or more RLC SDUs and submitted to the upper layer; otherwise, if one or more of the above segment segments cannot be assembled into one or more complete RLCs SDU, these bytes segmen t are discarded. The assembled RLC SDU is then submitted to the upper level.

It should be noted that, when the transmission layer protocol of the video transmission uses TCP (Transmission Control Protocol), the encoded data frame is applied to the enhancement layer video, and if it is discarded due to the application of the above embodiment, the receiver A packet of a video application encoded data frame can be reconstructed and submitted to the TCP layer to avoid unnecessary TCP layer retransmission.

The embodiment of the present invention provides a transmission device, which may be a RLC AM entity sender (may be referred to as a "sender"), and the sender may be a base station (such as an evolved base station) or a user terminal, as shown in FIG. The device includes: a determining unit 801, a processor 802, and a processor 802, which includes one or a combination of the following modules: a first processing module 8021, a second processing module 8022, a third processing module 8023, a fourth processing module 8024, and a fifth processing. Module 8025, sixth processing module 8026, seventh processing module 8027, eighth processing module 8028;

The determining unit 801 is configured to determine, by determining, a type of a radio link control RLC protocol data unit PDU of the encapsulated video application encoded data frame;

Further, the determining unit 801 is specifically configured to: when the type of the video application encoded data frame encapsulated by the RLC PDU is a base layer video application encoded data frame, or when the type of the video application encoded data frame encapsulated by the RLC PDU includes a base layer video application When the encoded data frame and the enhancement layer video application coded data frame, the type of the RLC PDU is determined to be the first type; and when the type of the video application coded data frame encapsulated by the RLC PDU is the enhanced layer video application coded data frame, RLC PDU The type is the second type.

The processor 802 is configured to: when the type of the RLC PDU is the first type, adopt a first processing manner, and perform a first sending process on the RLC PDU; and when the type of the RLC PDU is the second type, adopt a second processing manner And performing a second sending process on the RLC PDU, where the second processing mode is different from the first processing mode.

Further, the first processing module 8021 in the processor 802 is configured to: when the type of the RLC PDU is the first type, send the RLC PDU data packet to the RLC AM entity receiver to which the RLC PDU belongs; or

The second processing module 8022 of the processor 802 is configured to: when the type of the RLC PDU is the first type, apply the first automatic retransmission request configuration parameter, and send the RLC PDU data packet to the receiver; or

The third processing module 8023 in the processor 802 is configured to: when the type of the RLC PDU is the first type, send the type information of the RLC PDU and the RLC PDU data packet to the receiver, so that the receiver performs the type information according to the RLC PDU. Corresponding operation; or the third processing module 8023 in the processor 802 is configured to send the RLC PDU data packet to the receiver, so that the receiver performs a corresponding operation according to the type of the RLC PDU determined by the RLC PDU data packet;

The fourth processing module 8024 in the processor 802 is configured to: after the RLC PDU data packet is sent to the RLC AM entity receiver to which the RLC PDU belongs, send the first control packet, so as to receive the RLC PDU, when the type of the RLC PDU is the second type. The party does not feedback the new status report; or,

The fifth processing module 8025 in the processor 802 is configured to: when the type of the RLC PDU is the second type, apply the second automatic retransmission request configuration parameter, and send the RLC PDU data packet to the receiver; or

The sixth processing module 8026 in the processor 802 is configured to: when the type of the RLC PDU is the second type, send the type information of the RLC PDU and the RLC PDU data packet to the receiver, so that the receiver performs the type information according to the RLC PDU. Corresponding operation; or the sixth processing module 8026 in the processor 802 is configured to send the RLC PDU data packet to the receiver, so that the receiver performs the corresponding operation according to the type of the RLC PDU determined by the RLC PDU data packet. The seventh processing module 8027 in the processor 802 is configured to resend the RLC PDU data packet to the receiver when the type of the RLC PDU is the first type; or

The eighth processing module 8028 in the processor 802 is configured to: after the third control packet is sent to the receiver, send the RLC PDU data packet, so that the receiver does not feed back the new status report, when the type of the RLC PDU is the second type. .

Further, when the automatic retransmission request configuration parameter is the maximum number of retransmissions, the second processing module 8022 is configured to: when the first type of RLC PDU cumulative retransmission times reaches the configured maximum retransmission threshold, the RRC is controlled to the radio resource. The layer reports and triggers RRC reconstruction;

The fifth processing module 8035 is specifically configured to: when the cumulative number of retransmissions of the second type of RLC PDU reaches the configured maximum retransmission threshold, send the first control packet to the receiver, so that the receiver does not feed back the new status report.

The first control packet may include: a mobile receiving window MRW Control PDU, the MRW Control PDU is used to instruct the receiving party to update according to the value indicated in the MRW Control PDU, and does not feed back the new status report.

Further, the third processing module 8023 or the sixth processing module 8036 is specifically configured to: add a field carrying a type message to a header of the RLC PDU and send the field to the receiver, and the type message is a type of the current RLC PDU or a sent RLC PDU. Type; or,

The RLC control PDU is preset, and the RLC control PDU is sent to the receiver, and the RLC control PDU is used to carry the type of the current RLC PDU or the type of the RLC PDU that has been sent.

It should be noted that, in this embodiment, the functions of the determining unit 801 and the processor 802 may be performed by one processor. In other words, the processor is configured to perform the function of determining the type of the RLC PDU and perform according to different types of the RLC PDU. The function of differentiation processing.

The embodiment of the present invention provides a transmission apparatus, where the determining unit determines the type of the RLC PDU, and the processor is configured to: when the type of the RLC PDU is the first type, adopt the first processing manner, and perform the first sending processing on the RLC PDU. And when the type of the RLC PDU is the second type, the second processing mode is used, and the second processing is performed on the RLC PDU, where the second processing manner is different from the first processing manner. The solution provided by the embodiment of the present invention performs different processing on different types of RLC PDUs. Make full use of the advantages of scalable coding methods.

The embodiment of the present invention provides a transmission apparatus, which may be an RLC AM entity receiver (may be referred to as a "receiver"), and the sender may be a user terminal or a base station (for example, "evolved base station"), as shown in FIG. The device includes: a receiver 901, a processor 902, where the processor 902 includes one or a combination of the following modules: a first processing module 9021, a second processing module 9022, a third processing module 9023, and a fourth processing module 9024. Judging module 9025, fifth processing module 9026, sixth processing module 9027, seventh processing module 9028, eighth processing module 9029;

a receiver 901, configured to receive a radio link control for encapsulating a video application coded data frame, an RLC response mode to which the data unit PDU belongs, and a first data packet sent by the sender of the AM entity;

The processor 902 is configured to adopt a corresponding receiving processing manner according to the content included in the first data packet.

Further, the first processing module 9021 in the processor 902 is configured to send a first status report of the RLC PDU to the sender when the first data packet includes the RLC PDU data packet carrying the polling indication; or

The second processing module 9022 in the processor 902 is configured to: when the first data packet includes the first control packet, perform a first update of the received state variable VR (R) value according to the received indication in the first control packet Not to report a new status report; or,

The third processing module 9023 of the processor 902 is configured to: when the first data packet includes type information of the RLC PDU, and the RLC PDU is of the first type, send a second status report of the RLC PDU to the sender; or

The fourth processing module 9024 in the processor 902 is configured to: when the first data packet includes type information of the RLC PDU, and the RLC PDU is of the second type, perform a second update of the received state variable VR (R) value to Feedback new status reports; or,

The determining module 9025 in the processor 902 is configured to determine the type of the RLC PDU when the first data packet includes the RLC PDU data packet, and the fifth processing module 9026 in the processor 902 is configured to use the RLC PDU as the first type. Sending a second status report of the RLC PDU to the sender; the sixth processing module 9027 in the processor 902 is configured to receive the state variable VR (R) when the RLC PDU is of the second type. The second update of the value to not report a new status report;

Further, the determining module 9025 is specifically configured to: determine, by parsing the RLC PDU, a type of the RLC PDU, where the type of the video application coded data frame encapsulated by the RLC PDU is a base layer video application coded data frame, or when the RLC PDU is used When the type of the encapsulated video application coded data frame includes the base layer video application coded data frame and the enhancement layer video application coded data frame, the type of the RLC PDU is determined to be the first type; and the video application coded data frame encapsulated by the RLC PDU When the type of the encoded data frame is an enhancement layer video application, the type of the RLC PDU is determined to be the second type;

Or, according to the type information of the RLC PDU sent by the sender, determine the type of the RLC PDU. Further, the seventh processing module 9028 in the processor 902 is configured to perform VR when the first data packet includes the retransmitted RLC PDU data packet, and the sequence number of the RLC PDU is the updated VR (R). a third update of the value of R); or,

The eighth processing module 9029 in the processor 902 is configured to perform a fourth update of the VR (R) value when the third control packet is included in the first data packet to not feed back the new status report.

Further, the first update of the receive state variable VR (R) value may be the update VR (MR) to the sum of the new VR (R) and the receive window size. Where VR (MR) represents the upper edge of the receiving window, and VR (R) represents the lower edge of the receiving window, these two variables collectively represent the receiving window;

The second update of the received state variable VR(R) value may be a value of updating the VR(R) value to the VR) of the first RLC PDU, where the first RLC PDU is the first SN (series number) is greater than the current The SN of the RLC PDU, and the RLC PDU that is not completely received;

The third update of the received state variable VR (R) value may be that if the SN of the first type RLC PDU is greater than the ACK_SN, the VR (R) is updated to the SN of the first type RL greater than the first type RLC PDU, and is not completely received. RLC PDU; otherwise, if there is a first type RLC PDU that is not correctly received between the SN and the ACK_SN of the first type RLC PDU, the VR (R) is updated to the SN that is greater than the first type RLC PDU, and The first type of RLC PDU is not completely received; otherwise, if the first type of RLC PDU is completely correctly received between the SN and ACK_SN of the first type of RLC PDU, the update VR (R) to the first SN is greater than ACK – SN, and not fully received RLC PDU; the fourth update of the receive state variable VR(R) value may be to update the VR(R) value to the first RLC PDU SN, wherein if all types of RLC PDUs corresponding to the NACK_SN are second type RLC PDUs, the first RLC PDU is the first RSN PDU whose SN is greater than ACK_SN and is not completely received; otherwise, An RLC PDU is a first type of RLC PDU that is not completely received by the first of the RLC PDUs corresponding to all NACK_SNs.

An embodiment of the present invention provides a medium transmission apparatus, which receives, by a receiver, an RLC PDU data packet sent by a sender, and a processor, configured to determine a type of the RLC PDU, and when the type of the RLC PDU is the first type, adopting the first receiving When the type of the RLC PDU is the second type, and the second receiving processing mode is adopted, the second receiving processing mode is different from the first receiving processing mode. The apparatus provided by the present invention can provide differentiated transmission services and take full advantage of the scalable coding method.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. . Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer. A hard disk or optical disk or the like includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

claims

1. A transmission method, characterized by including:

Determine the type of wireless link control RLC protocol data unit PDU that encapsulates the video application encoding data frame;

When the type of the RLC PDU is the first type, the first processing method is adopted, and the first sending process is performed on the RLC PDU;

When the type of the RLC PDU is the second type, the second processing method is adopted, and the second sending process is performed on the RLC PDU, wherein the second processing method is different from the first processing method.

2. The method according to claim 1, wherein the determining the type of the wireless link control RLC protocol data unit PDU of the encapsulated video application coding data frame includes:

When the type of the video application encoding data frame encapsulated by the RLC PDU is a base layer video application encoding data frame, or when the type of the video application encoding data frame encapsulated by the RLC PDU includes a base layer video application encoding data frame and an enhancement When the layer video application encodes the data frame, it is determined that the type of the RLC PDU is the first type;

When the type of the video application coding data frame encapsulated by the RLC PDU is an enhancement layer video application coding data frame, it is determined that the type of the RLC PDU is the second type.

3. The method according to claim 2, characterized in that adopting the first processing method and performing the first sending processing on the RLC PDU includes:

Send the RLC PDU data packet to the RLC AM entity receiver to which the RLC PDU belongs; or, apply the first automatic retransmission request configuration parameters, and send the RLC PDU data packet to the receiving party; or,

Combine the type information of the RLC PDU and the RLC PDU data packet so that the receiver can perform corresponding operations based on the type information of the RLC PDU; or,

Send the RLC PDU data packet to the receiver, so that the receiver performs corresponding operations based on the type of RLC PDU determined by the RLC PDU data packet;

and / or,

Using the second processing method and performing the second sending processing on the RLC PDU includes: After sending the RLC PDU data packet to the RLC AM entity receiver to which the RLC PDU belongs, send the first control packet so that the receiver does not feed back a new status report; or,

Apply the second automatic retransmission request configuration parameter and send the RLC PDU data packet to the receiver; or,

The RLC PDU data packet is sent to the receiver, so that the receiver performs corresponding operations based on the type of RLC PDU determined by the RLC PDU data packet.

4. The method according to claim 2, characterized in that adopting the first processing method and performing the first sending processing on the RLC PDU includes:

Resend the RLC PDU data packet to the receiver;

and / or,

Using the second processing method and performing the second sending process on the RLC PDU includes: after sending the third control packet to the receiver, sending the RLC PDU data packet so that the receiver does not feedback New status report.

5. The method according to claim 3, characterized in that,

When the automatic retransmission request configuration parameters include the maximum number of retransmissions, the application of the first automatic retransmission request configuration parameters includes: when the cumulative number of retransmissions of the first type RLC PDU reaches the configured maximum number of retransmissions threshold, Radio Resource Control RRC layer reports and triggers RRC re-establishment;

The application of the second automatic retransmission request configuration parameters includes: when the cumulative number of retransmissions of the second type RLC PDU reaches the configured maximum retransmission threshold, sending the first control packet to the receiver so that the The receiver does not respond with new status reports.

6. The method according to claim 3, wherein said sending the type information of the RLC PDU and the RLC PDU data packet to the recipient includes:

Add a field carrying type information to the header of the RLC PDU and send it to the receiver, where the type information is the type of the current RLC PDU or the type of the sent RLC PDU; or, preset the RLC control PDU, and Send the RLC control PDU to the receiver, and the RLC control PDU The customized PDU is used to carry the type of the current RLC PDU or the type of the sent RLC PDU.

7. A transmission method, characterized by including:

Receive the first data packet sent by the AM entity sender of the RLC response mode to which the radio link control RLC protocol data unit PDU of the encapsulated video application coded data frame belongs;

According to the content included in the first data packet, a corresponding reception processing method is adopted.

8. The method according to claim 7, characterized in that, according to the content included in the first data packet, adopting the corresponding receiving and processing method includes:

When the first data packet includes an RLC PDU data packet carrying a polling indication, send the first status report of the RLC PDU to the sender; or,

When the first data packet includes a first control packet, a first update of the value of the received state variable VR (R) is performed according to the instruction in the received first control packet so as not to feed back a new status report.

9. The method according to claim 7, characterized in that, using the corresponding receiving processing method according to the content included in the first data packet includes:

When the first data packet includes type information of the RLC PDU and the RLC PDU is of the first type, send a second status report of the RLC PDU to the sender; or,

When the first data packet includes the type information of the RLC PDU and the RLC PDU is of the second type, perform a second update of the value of the reception state variable VR (R) so as not to feed back a new status report; or, when When the first data packet includes an RLC PDU data packet, determine the type of RLC PDU. When the RLC PDU is of the first type, send a second status report of the RLC PDU to the sender. When the RLC PDU is of the first type, When the RLC PDU is of the second type, a second update of the value of the receiving state variable VR (R) is performed so as not to feed back a new status report.

10. The method according to claim 9, wherein the determining the type of the RLC PDU includes:

By parsing the RLC PDU, the type of the RLC PDU is determined, wherein the type of the video application encoding data frame encapsulated by the RLC PDU is a base layer video application encoding data frame, or when the type of the video application encoding data frame encapsulated by the RLC PDU is When the type of the video application encoding data frame includes the base layer video application encoding data frame and the enhancement layer video application encoding data frame, it is determined that the type of the RLC PDU is the first type type; and when the type of the video application coded data frame encapsulated by the RLC PDU is an enhancement layer video application coded data frame, it is determined that the type of the RLC PDU is the second type;

Or, determine the type of the RLC PDU according to the type information of the RLC PDU sent by the sender.

11. The method according to claim 7, characterized in that: adopting the corresponding receiving and processing method according to the content included in the first data packet includes:

When the first data packet includes a retransmitted RLC PDU data packet, and the sequence number of the RLC PDU is the updated VR (R), perform a third update of the VR (R) value; or,

When the first data packet includes the third control packet, a fourth update of the VR (R) value is performed so as not to feed back a new status report.

12. A transmission device, characterized in that it includes:

A judgment unit, used to judge the type of the wireless link control RLC protocol data unit PDU that encapsulates the video application encoding data frame;

A processor, configured to adopt a first processing method when the type of the RLC PDU is the first type, and perform a first sending process on the RLC PDU; and when the type of the RLC PDU is the second type, A second processing method is adopted, and a second sending process is performed on the RLC PDU, where the second processing method is different from the first processing method.

13. The device according to claim 12, characterized in that the judgment unit is specifically configured to: when the type of the video application encoding data frame encapsulated in the RLC PDU is a base layer video application encoding data frame, or when When the type of the video application coded data frame encapsulated by the RLC PDU includes a base layer video application coded data frame and an enhancement layer video application coded data frame, it is determined that the type of the RLC PDU is the first type;

Or, when the type of the video application coded data frame encapsulated by the RLC PDU is an enhancement layer video application coded data frame, it is determined that the type of the RLC PDU is the second type.

14. The device according to claim 13, characterized in that the processor includes: a first processing module, configured to send a request to the RLC to which the RLC PDU belongs when the type of the RLC PDU is the first type. The AM entity receiver sends an RLC PDU data packet; or, the second processing module is used when When the type of the RLC PDU is the first type, apply the first automatic retransmission request configuration parameter, and send the RLC PDU data packet to the receiver; or, a third processing module, used when the RLC PDU When the type is the first type, send the type information of the RLC PDU and the RLC PDU data packet to the receiver, so that the receiver can perform corresponding operations according to the type information of the RLC PDU; or, The third processing module is used to send the RLC PDU data packet to the receiver, so that the receiver performs corresponding operations based on the type of RLC PDU determined by the RLC PDU data packet; the fourth processing module , used when the type of the RLC PDU is the second type, after sending the RLC PDU data packet to the RLC AM entity receiver to which the RLC PDU belongs, send the first control packet so that the receiver does not feedback new information. status report; or, a fifth processing module, configured to apply the second automatic retransmission request configuration parameter when the type of the RLC PDU is the second type, and send the RLC PDU data packet to the receiver; Alternatively, the sixth processing module is configured to, when the type of the RLC PDU is the second type, send the type information of the RLC PDU and the RLC PDU data packet to the receiver, so that the receiver can The type information of the RLC PDU performs corresponding operations; or, the sixth processing module is used to send the RLC PDU data packet to the receiver, so that the receiver can judge based on the RLC PDU data packet. Perform corresponding operations based on the type of RLC PDU.

15. The device according to claim 13, characterized in that the processor includes: a seventh processing module, configured to resend the RLC to the receiver when the type of the RLC PDU is the first type. PDU packet; or,

The eighth processing module is configured to, when the type of the RLC PDU is the second type, after sending the third control packet to the receiver, send the RLC PDU data packet so that the receiver does not feed back new status report.

16. The device according to claim 14, wherein when the automatic retransmission request configuration parameter includes a maximum number of retransmissions,

The second processing module is specifically configured to report to the radio resource control RRC layer and trigger RRC reconstruction when the cumulative number of retransmissions of the first type RLC PDU reaches the configured maximum retransmission threshold;

The fifth processing module is specifically configured to send the first control packet to the receiver when the cumulative number of retransmissions of the second type RLC PDU reaches a configured maximum retransmission threshold, so that the receiver No new status reports are returned.

17. The device according to claim 14, characterized in that the third processing module or the sixth processing module is specifically used for:

Add a field carrying type information to the header of the RLC PDU and send it to the receiver, where the type information is the type of the current RLC PDU or the type of the sent RLC PDU; or, preset the RLC control PDU, and The RLC control PDU is sent to the receiver, where the RLC control PDU is used to carry the type of the current RLC PDU or the type of the sent RLC PDU.

18. A transmission device, characterized in that it includes:

A receiver, configured to receive the first data packet sent by the RLC response mode AM entity sender of the wireless link control RLC protocol data unit to which the PDU belongs encapsulating the video application coded data frame;

A processor, configured to adopt a corresponding receiving processing method according to the content included in the first data packet.

19. The device according to claim 18, wherein the processor includes: a first processing module, configured to: when the first data packet includes an RLC PDU data packet carrying a polling indication, The sender sends the first status report of the RLC PDU; or,

The second processing module is configured to perform a first update of the value of the receiving state variable VR (R) according to the instruction in the received first control packet when the first data packet includes a first control packet so as not to feed back the new value. status report.

20. The device according to claim 18, wherein the processor includes: a third processing module, configured to: when the first data packet includes type information of RLC PDU, and the RLC PDU is the first When type one, send the second status report of the RLC PDU to the sender; or,

The fourth processing module is configured to perform a second update of the value of the received state variable VR (R) when the first data packet includes the type information of the RLC PDU and the RLC PDU is of the second type so as not to feed back the new value. status report; or,

The judgment module is used to judge the type of RLC PDU when the first data packet includes an RLC PDU data packet; the fifth processing module is used to send the RLC PDU to the sender when the RLC PDU is of the first type. Send a second status report of the RLC PDU; a sixth processing module, configured to perform a second update of the value of the received status variable VR (R) when the RLC PDU is of the second type so as not to feed back a new status report .

21. The device according to claim 20, wherein the judgment module is specifically configured to: determine the type of RLC PDU by parsing the RLC PDU, wherein when the video application coded data frame encapsulated by the RLC PDU The type is a base layer video application encoding data frame, or when the type of the video application encoding data frame encapsulated by the RLC PDU includes the base layer video application encoding data frame and the enhancement layer video application encoding data frame, then it is determined that the The type of the RLC PDU is the first type; and when the type of the video application encoding data frame encapsulated by the RLC PDU is the enhancement layer video application encoding data frame, it is determined that the type of the RLC PDU is the second type; or,

The type of RLC PDU is determined based on the type information of the RLC PDU sent by the sender.

22. The device according to claim 18, wherein the processor includes: a seventh processing module, configured to: when the first data packet includes a retransmitted RLC PDU data packet, and the sequence of the RLC PDU When the number is the updated VR (R), perform the third update of the VR (R) value; or, the eighth processing module is used to perform the VR (R) value when the first data packet includes the third control packet. ) value is updated to report no new status.