CN103428484A - Transmission method and device - Google Patents

Abstract

The invention discloses a transmission method and device, relates to the technical field of communication networks, can provide differentiated transmission services, and give full play to the advantages of scalable video coding. The solution provided by the embodiment of the present invention includes: judging the type of the RLC PDU encapsulating the video application coded data frame; when the type of the RLC PDU is the first type, adopting the first processing method, and performing the first Sending processing: when the type of the RLC PDU is the second type, adopt a second processing manner, and perform a second sending processing on the RLC PDU. The solutions provided by the embodiments of the present invention are suitable for the transmission of video data frames.

Description

A transmission method and device

technical field

The present invention relates to the technical field of communication networks, in particular to a transmission method and device.

Background technique

Currently, when a scalable coding method is used to code a video application, video coded data includes coded data frames of the base layer and coded data frames of other enhancement layers. The scalable coding method can form a base 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 encode and transmit them respectively. After receiving the encoded data frame of the base layer, the decoder can decode it independently, but the decoding of the encoded data frame of the enhancement layer needs to use the data of the base layer, which can be decoded together with the encoded data frame of the base layer to obtain the enhanced image effect. For systems using scalable video coding methods, during the transmission process, the video application server can determine the content to be sent by judging the network conditions: for example, when the network conditions are good, the encoded data frames of the basic layer and the enhancement layer can be transmitted at the same time; When the network condition is poor, only base layer coded data frames are transmitted.

Because in wireless transmission, the video coding frame of a video application is usually only mapped to one DRB (Data Radio Bearer, data radio bearer) of the wireless network, and a RLC (RadioLink Control, radio link control) mode is uniquely determined, Corresponds to an RLC entity. An RLC AM (Acknowledged Mode) entity includes an RLC AM entity sender and a corresponding RLC AM entity receiver.

Contents of the invention

Embodiments of the present invention provide a transmission method and device, which can provide differentiated transmission services and give full play to the advantages of scalable video coding.

Embodiments of the invention adopt the following technical solutions:

A method of transmission comprising:

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

When the type of the RLC PDU is the first type, adopt the first processing mode, and carry out the first sending processing to the RLC PDU;

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

A method of transmission comprising:

Receive the RLC PDU data packet sent by the sender of the RLC response mode AM entity of the radio link control RLC protocol data unit PDU that encapsulates the video application coded data frame;

Determine the type of the RLC PDU;

When the type of the RLC PDU is the first type, adopt the first receiving and processing method;

When the type of the RLC PDU is the second type, a second receiving and processing method is adopted, wherein the second receiving and processing method is different from the first receiving and processing method.

A transmission device comprising:

A judging unit, configured to judge the type of the radio link control RLC protocol data unit PDU encapsulating the video application coded data frame;

A processor, configured to adopt the first processing mode when the type of the RLC PDU is the first type, and perform the first sending processing 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 processing on the RLC PDU, wherein the second processing manner is different from the first processing manner.

A transmission device comprising:

The receiver is used to receive the RLC PDU data packet sent by the sender of the RLC response mode AM entity to which the radio link control RLC protocol data unit PDU of the video application coded data frame belongs;

A processor, configured to determine the type of the RLC PDU; and when the type of the RLC PDU is the first type, adopt the first receiving processing method; and when the type of the RLC PDU is the second type, adopt the first Two receiving and processing methods, wherein the second receiving and processing method is different from the first receiving and processing method.

The embodiment of the present invention provides a transmission method and device, which controls the type of RLC protocol data unit PDU by judging the wireless link encapsulating the video application coded data frame; and performs different processing according to the type of the RLC PDU. The solutions provided by the embodiments of the present invention can provide differentiated transmission services and give full play to the advantages of scalable video coding.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings on the premise of not paying creative efforts.

FIG. 1 is a flowchart of a transmission method provided by Embodiment 1 of the present invention;

FIG. 2 is a flow chart of another transmission method provided by Embodiment 1 of the present invention;

FIG. 3 is a block diagram of a transmission device provided in Embodiment 1 of the present invention;

FIG. 4 is a block diagram of another transmission device provided in Embodiment 1 of the present invention;

FIG. 5A is a flowchart of a transmission method provided by Embodiment 2 of the present invention;

FIG. 5B is a schematic diagram of a transmission method provided by Embodiment 2 of the present invention;

FIG. 6A is a flowchart of another transmission method provided by Embodiment 2 of the present invention;

FIG. 6B is a schematic diagram of another transmission method provided by Embodiment 2 of the present invention;

FIG. 7 is a flowchart of another transmission method provided by Embodiment 2 of the present invention;

FIG. 8 is a block diagram of a transmission device provided in Embodiment 2 of the present invention;

FIG. 9 is a block diagram of another transmission device provided by Embodiment 2 of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The technical scheme of the present invention can be applied to various wireless networks, such as: Global System for Mobile Communications (Global System for Mobile Communications, referred to as GSM) network, General Packet Radio Service (General Packet Radio Service, referred to as GPRS) network, Code Division Multiple Code Division Multiple Access (CDMA for short) network, Wideband Code Division Multiple Access (WCDMA for short) network, Time Division-Synchronous Code Division Multiple Access (TD-SCDMA for short) network or long-term Evolution (Long Term Evolution, LTE for short) network, etc.

The base station can be a base station (Base Transceiver Station, referred to as BTS) in a GSM network, a GPRS network or a CDMA network, or a base station (NodeB) in a WCDMA network, or an evolutionary base station (Evolutional Node B) in an LTE network. referred to as eNB or eNodeB).

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

Example 1

The embodiment of the present invention provides a kind of transmission method, and the executor of this method is RLC AM entity sender (can be referred to as " sender "), as shown in Figure 1, this method comprises the following steps:

Step 101, judging the type of the radio link control RLC protocol data unit PDU that encapsulates the video application coded data frame;

Optionally, 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 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 enhanced When the video application coded data frame of the layer video is used, the type of the RLC PDU is judged to be the 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, the type of the RLC PDU is judged to be the first type. Two types.

Further, in the embodiment of the present invention, the type and the priority can be in a one-to-one mapping relationship. Specifically, the first type can be mapped to the high priority one by one, that is, when it is determined that the type of the RLC PDU is the first type, it can also be That is, it is judged that the priority of the RLC PDU is high priority. For example, when the type of the video application coded data frame is the base layer video application coded data frame, or 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, then determine the RLC PDU The priority is high priority; the second type can be mapped with the low priority one by one, that is, when the type of the RLC PDU is judged to be the second type, it is judged that 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, it is judged that the priority of the RLC PDU is low priority.

Step 102, when the type of the RLC PDU is the first type, adopt the first processing mode, and carry out the first sending processing to the RLC PDU;

Optionally, the execution method of this step includes:

Send the RLC PDU packet to the receiver of the RLC AM entity to which the RLC PDU belongs; or,

apply the first automatic repeat request configuration parameter, and send the RLC PDU packet to the receiver; or,

Send the RLC PDU type information and RLC PDU data packet to the receiver, so that the receiver can perform corresponding operations according to the RLC PDU type information.

Step 103, when the type of the RLC PDU is the second type, adopt the second processing method, and perform the second sending processing on the RLC PDU, wherein the second processing method is different from the first processing method.

Optionally, the execution method of this step 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 the status report of the second type RLC PDU; or,

apply the second automatic repeat request configuration parameter, and send the RLC PDU packet to the receiver; or,

Send the RLC PDU type information and RLC PDU data packet to the receiver, so that the receiver can perform corresponding operations according to the RLC PDU type information.

Wherein, the first control packet includes: MRW (Moving Receiving Window, mobile receiving window) control PDU, and the MRW control PDU is used to instruct the receiver to update according to the value indicated in the MRW control PDU, so as not to feed back the status of the second type RLC PDU Report.

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

The embodiment of the present invention provides a transmission method, which judges the type of the RLC PDU encapsulating the video application coded data frame; when the type of the RLC PDU is the first type, adopts the first processing mode, and performs the first sending processing on the RLC PDU; When the type of the RLC PDU is the second type, the second processing method is adopted, and the RLC PDU is subjected to the second sending processing, wherein the second processing method is different from the first processing method. The solutions provided by the embodiments of the present invention can provide differentiated transmission services according to different types of RLC PDUs, and give full play to the advantages of the scalable coding method.

The embodiment of the present invention provides another kind of transmission method, and the executor of this method is RLC AM entity receiver (can be referred to as " receiver "), as shown in Figure 2, this method comprises:

Step 201, receiving the RLC PDU packet sent by the sender of the RLC response mode AM entity to which the radio link control RLC protocol data unit PDU of the video application coded data frame belongs;

Step 202, determine the type of RLC PDU;

Specifically, the type of the RLC PDU is determined by parsing the RLC PDU, wherein, 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 when 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, then determine that the type of RLC PDU is the first type; when the type of the video application coded data frame encapsulated by the RLC PDU is the enhancement layer video application coded When a data frame is received, the type of the RLC PDU is determined to be the second type; or, the type of the RLC PDU is determined 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 can be in a one-to-one mapping relationship. Specifically, the first type can be mapped to the high priority one by one, that is, when it is determined that the type of the RLC PDU is the first type, it can also be That is, it is judged that the priority of the RLC PDU is high priority. For example, when the type of the video application coded data frame is the base layer video application coded data frame, or 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, then determine the RLC PDU The priority is high priority; the second type can be mapped with the low priority one by one, that is, when the type of the RLC PDU is judged to be the second type, it is judged that 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, it is judged that the priority of the RLC PDU is low priority.

Step 203, when the type of the RLC PDU is the first type, adopt the first reception processing method;

Specifically, when the type of the RLC PDU is the first type, send the first status report of the RLC PDU to the sender; or,

When the type of RLC PDU is the first type, apply the first automatic repeat request configuration parameter; or,

When the type of the RLC PDU is the first type, the type information of the RLC PDU sent by the sender is received, and the second status report of the RLC PDU is sent to the sender.

Step 204, when the type of the RLC PDU is the second type, adopt a second receiving and processing method, wherein the second receiving and processing method is different from the first receiving and processing method.

Specifically, when the type of the RLC PDU is the second type, the first control packet sent by the sender is received, and the first update of the received state variable VR(R) value is performed according to the indication in the received first control packet to do not feed back status reports for Type 2 RLC PDUs; or,

When the type of the RLC PDU is the second type, after determining the type of the RLC PDU according to the type information of the RLC PDU sent by the sender, the second update of the value of the receiving state variable VR(R) is performed so as not to feed back the second type RLC PDU status report.

It should be noted that step 203 and step 204 are executed selectively, that is, step 203 or step 204 is executed according to the specific judgment result of step 202 .

The embodiment of the present invention provides a method of transmission, by receiving the RLC PDU data packet sent by the sender of the RLC response mode AM entity to which the RLC protocol data unit PDU belongs to by receiving the radio link encapsulating the video application coded data frame; parsing the RLC PDU data packet , determine the type of RLC PDU; when the type of RLC PDU is the first type, adopt the first receiving processing method; when the type of RLC PDU is the second type, adopt the second receiving processing method, wherein, the second receiving processing method It is different from the first reception processing method. The solutions provided by the embodiments of the present invention can provide differentiated transmission services and give full play to the advantages of scalable video coding.

Embodiments of the present invention provide a transmission device, which can be an RLC AM entity sender ("sender" for short), as shown in Figure 3, the device includes: a judging unit 301, a processor 302;

A judging unit 301, configured to judge the type of the radio link control RLC protocol data unit PDU encapsulating the video application coded data frame;

Optionally, the first judging module in the judging unit 301 is used for when the type of the video application coded data frame encapsulated by the RLC PDU is a basic layer video application coded data frame, or when 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, then it is judged that the type of the RLC PDU is the first type; further, the type and priority in the embodiment of the present invention can be a one-to-one mapping relationship Specifically, the first type can be mapped with the high priority one by one, that is, when it is judged that the type of the RLC PDU is the first type, that is, it is judged that the priority of the RLC PDU is the high priority. For example, when the type of the video application coded data frame is the base layer video application coded data frame, or 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, then determine the RLC PDU priority is high priority;

The second judging module in the judging unit 301 is used for judging that the type of the RLC PDU is the second type when the type of the video application coded data frame encapsulated by the RLC PDU is an enhancement layer video application coded data frame. Further, the second type can be mapped with the low priority one by one, that is, when it is judged that the type of the RLC PDU is the second type, that is, it is judged that the priority of the RLC PDU is the low priority. For example, when the type of the video application coded data frame is an enhancement layer video application coded data frame, it is judged that the priority of the RLC PDU is low priority.

The processor 302 is configured to adopt the first processing method when the type of the RLC PDU is the first type, and perform the first sending processing on the RLC PDU; and when the type of the RLC PDU is the second type, adopt the second processing method , and perform a second sending process on the RLC PDU, wherein the second processing method is different from the first processing method.

Further, the first processing module in the processor 302 is configured to send the RLC PDU packet to the receiver of the RLC AM entity to which the RLC PDU belongs when the type of the RLC PDU is the first type; or,

The second processing module in the processor 302 is used to apply the first automatic repeat request configuration parameter when the type of the RLC PDU is the first type, and send the RLC PDU data packet to the receiver; or,

The third processing module in the processor 302 is used to send the type information of the RLC PDU and the RLC PDU data packet to the receiver when the type of the RLC PDU is the first type, so that the receiver performs corresponding processing according to the type information of the RLC PDU operation.

Further, the fourth processing module in the processor 302 is used to send the first control packet after sending the RLC PDU data packet to the RLC AM entity receiver to which the RLC PDU belongs when the type of the RLC PDU is the second type, so that Make the receiver not feed back the status report of the second type RLC PDU; or,

The fifth processing module in the processor 302 is used to apply the second automatic repeat request configuration parameter when the type of the RLC PDU is the second type, and send the RLC PDU data packet to the receiver; or,

The sixth processing module in the processor 302 is used to send the type information of the RLC PDU and the RLC PDU data packet to the receiver when the type of the RLC PDU is the second type, so that the receiver performs corresponding processing according to the type information of the RLC PDU operation.

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 can also provide another implementation manner, which includes a processor, which can implement the functions of the judging unit 301 and the processor 302 in this embodiment, that is, the processor executes the judgment of the RLC PDU. The function of the type and the function of differentiated processing according to the different types of RLC PDU.

An embodiment of the present invention provides a transmission device, which judges the type of the RLC PDU encapsulating the video application coded data frame through the judging unit; the processor is used to adopt the first processing method when the type of the RLC PDU is the first type, and The RLC PDU performs the first sending processing; and when the type of the RLC PDU is the second type, adopts the second processing method, and performs the second sending processing on the RLC PDU, wherein the second processing method is different from the first processing method. The solutions provided by the embodiments of the present invention can provide differentiated transmission services and give full play to the advantages of scalable video coding.

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

The receiver 401 is configured to receive the RLC PDU packet sent by the sender of the RLC response mode AM entity to which the radio link control RLC protocol data unit PDU of the video application coded data frame is encapsulated;

Processor 402, used to determine the type of RLC PDU, and when the type of RLC PDU is the first type, adopt the first receiving processing mode; and when the type of RLC PDU is the second type, adopt the second receiving processing mode, Wherein, the second reception processing manner is different from the first reception processing manner.

Further, the processor 402 is specifically configured to determine the type of the RLC PDU by parsing the RLC PDU, wherein, 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 type of the video application coded data frame encapsulated by the RLC PDU is When the type of the encapsulated video application coded data frame includes a base layer video application coded data frame and an enhancement layer video application coded data frame, then determine that the type of the RLC PDU is the first type; and when the video application coded data frame encapsulated by the RLC PDU When the type is an enhancement layer video application coded data frame, then determine 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.

Further, in the embodiment of the present invention, the type and the priority can be in a one-to-one mapping relationship. Specifically, the first type can be mapped to the high priority one by one, that is, when it is determined that the type of the RLC PDU is the first type, it can also be That is, it is judged that the priority of the RLC PDU is high priority. For example, when the type of the video application coded data frame is the base layer video application coded data frame, or 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, then determine the RLC PDU priority is high priority;

The second type can be mapped with the low priority one by one, that is, when it is judged that the type of the RLC PDU is the second type, that is, it is judged that the priority of the RLC PDU is the low priority. For example, when the type of the video application coded data frame is an enhancement layer video application coded data frame, it is judged that the priority of the RLC PDU is low priority.

Further, the first processing module in the processor 402 is used to send the first status report of the RLC PDU to the sender when the type of the RLC PDU is the first type; or, the second processing module is used to send the first status report of the RLC PDU to the sender; When the type of the RLC PDU is the first type, the first automatic repeat request configuration parameter is applied; or, the third processing module is used to receive the type information of the RLC PDU sent by the sender when the type of the RLC PDU is the first type, and Send a second status report of the RLC PDU to the sender;

The fourth processing module is used to receive the first control packet sent by the sender when the type of the RLC PDU is the second type, and receive the value of the state variable VR (R) according to the indication in the received first control packet The first update is to not feed back the status report of the second type RLC PDU; or, the fifth processing module is used to determine the RLC PDU according to the type information of the RLC PDU sent by the sender when the type of the RLC PDU is the second type After receiving the type of the RLC PDU, the second update of the value of the receiving state variable VR (R) is performed to not feed back the status report of the second type RLC PDU.

It should be noted that the receiver in the embodiment of the present invention may be a user terminal or a base station.

An embodiment of the present invention provides a transmission device that can provide differentiated transmission services and fully utilize the advantages of scalable video coding.

Example 2

A transmission method provided by an embodiment of the present invention, as shown in FIG. 5A, the method includes the following steps:

Step 501, the video application sender encodes the data of the video application to obtain a video application coded data frame;

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

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

Step 502, the sender judges the type of the radio link control RLC protocol data unit PDU that encapsulates the video application coded data frame;

The sender in this step can be a base station or a user terminal. Specifically, when the video application sender is the video application server, the sender in this step is the base station, and the video application server sends the encoded video application encoded data frame to the base station, and then the base station determines the encapsulation of the video application encoded data frame Type of radio link control 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 according to the protocol, the user terminal sends the video application coded data frame of the application layer to the transport layer.

The sender can judge according to the frame type of video application coded data. Wherein, the video application coded data frame type includes a base layer coded data frame and an enhancement layer coded data frame. The sender can use DPI (Deep Packet Interpretation) to determine the type of video application coded data frame. When the type of video application coded data frame encapsulated by the RLC PDU is the basic layer video application coded data frame, or when When the type of the encapsulated video application coded data frame includes a base layer video application coded data frame and an enhancement layer video application coded data frame, it is judged that the type of the RLC PDU is the first type; when the video application coded data frame encapsulated by the RLC PDU When the type of the RLC PDU is an enhanced layer video application coded 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 can be in a one-to-one mapping relationship. Specifically, the first type can be mapped to the high priority one by one, that is, when it is determined that the type of the RLC PDU is the first type, it can also be That is, it is judged that the priority of the RLC PDU is high priority. For example, when the type of the video application coded data frame is the base layer video application coded data frame, or 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, then determine the RLC PDU priority is high priority;

The second type can be mapped with the low priority one by one, that is, when it is judged that the type of the RLC PDU is the second type, that is, it is judged that the priority of the RLC PDU is the low priority. For example, when the type of the video application coded data frame is an enhancement layer video application coded data frame, it is judged that the priority of the RLC PDU is low priority.

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

Step 503, when the type of the RLC PDU is the first type, the sender sends the RLC PDU packet to the RLC response mode AM entity receiver to which the RLC PDU belongs;

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 sending the RLC PDU data packet to the RLCAM entity receiver to which the RLC PDU belongs, the sender sends the first control packet, so that the receiver does not feed back the status of the second type RLC PDU Report;

It should be noted that step 503 and step 504 are optional steps, that is, according to the type of RLC PDU judged in step 502, it is determined to execute step 503 or step 504.

Optionally, after sending the second type RLC PDU, the sending of the first control packet may be controlled by a timer, that is, after sending the second type RLC PDU, the sender starts a timer. When the timer expires, the first control packet is sent to the corresponding receiver. The duration of the timer can be configured by the base station through RRC (Radio Resource Control, radio resource control) signaling or MAC (Media Access Control, media access control) CE (Control Element, control element), or it can be a value mandated by the protocol .

It should be noted that different video encoding frames have different requirements for QoS (Quality of Service). For example, the basic layer data frame requires high reliability, so it is hoped that the number of retransmissions will be more, but the enhancement layer data frame does not need to be so high. High reliability, if the channel condition is not good, although multiple retransmissions can ensure successful transmission, but from the perspective of reception, the enhancement of video quality is limited, and air interface resources are wasted to a certain extent. Therefore, when the system load is heavy, the solution provided by the embodiment of the present invention is adopted, that is, when the RLC PDU is the second type, after the RLC PDU is sent, the first control packet can be sent to the receiver, so as to control the receiving window of the receiver operate. Specifically, the first control packet may include an MRW control PDU, and the MRW control PDU is used to instruct the receiver to update according to the value indicated by the MRW control PDU, so as not to feed back the status report of the second type RLC PDU.

Step 505, the receiver receives the RLC PDU packet sent by the sender, and determines the type of the RLC PDU;

Further, the method for determining the type of the RLC PDU includes: 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 type of the video application coded data frame encapsulated by the RLC PDU includes a basic When layer video applies encoded data frames and enhancement layer video applies encoded data frames, then determine that the type of RLC PDU is the first type;

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.

Further, in the embodiment of the present invention, the type and the priority can be in a one-to-one mapping relationship. Specifically, the first type can be mapped to the high priority one by one, that is, when it is determined that the type of the RLC PDU is the first type, it can also be That is, it is judged that the priority of the RLC PDU is high priority. The second type can be mapped with the low priority one by one, that is, when it is judged that the type of the RLC PDU is the second type, that is, it is judged that the priority of the RLC PDU is the low priority. For a specific judgment method, reference may be made to step 502 .

Step 506, when the type of the RLC PDU is the first type, the receiving direction sender sends the first status report of the RLC PDU;

The first status report is used to feed back to the sender that the receiver has successfully received the RLC PDU packet. Further, after sending the first status report, follow-up corresponding operations need to be performed. Specifically, assemble all AMD PDUs and AMD PDU segments outside the receiving window, and assemble the successfully received SN (series number, serial number) in sequence )=AMD PDU segment in VR(R), that is, the RLC AM receiver entity will fall into any byte segment in one or more AMD PDUs outside the receiving window and VR(R) corresponds to the sequence word in the AMD PDU segment, remove the RLC header, assemble into one or more RLC SDUs and submit to the upper layer; otherwise, if the above one or more byte segments cannot be assembled into one or more complete RLC SDUs, discard these byte segments. Then submit the assembled RLC SDU to the upper layer.

For example, an RLC SDU is divided into two RLC AMD PDUs for transmission, one of the two AMD PDUs is received correctly, but only part of the byte segment of the other one is successfully received, and the other part of the byte segment is not received If it is successfully received, then the RLC SDU that has not been fully received cannot be correctly restored in the receiving entity, and the correctly received part will also be discarded.

Step 507, when the type of the RLC PDU is the second type, the receiver receives the first control packet sent by the sender, and performs the first update of the value of the receiving state variable VR(R) according to the indication in the received first control packet To report the status of the second type RLC PDU without feedback;

It should be noted that step 506 and step 507 are optional steps, that is, corresponding receiving processing is performed according to the type of the determined RLC PDU and the data packet sent by the sender.

Update VR(MR) to be the sum of the new VR(R) and the receive window size. Among them, VR(MR) represents the upper edge of the receiving window, and VR(R) represents the lower edge of the receiving window, and these two variables jointly represent the receiving window.

It should be noted that subsequent corresponding operations are performed after the VR(R) value is updated. For specific operations, refer to step 506, which will not be described in detail here.

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

The embodiment of the present invention provides a transmission method, by judging the type of the RLC PDU encapsulating the video application coded data frame: performing different operations according to different types of the RLC PDU, so that the advantages of the scalable coding method can be fully utilized.

The embodiment of the present invention provides another transmission method, as shown in FIG. 6A, the method includes:

Step 601, the video application sender encodes the data of the video application, and obtains a video application coded data frame;

The video application sender may be a video application server or a user terminal. Specifically, the video application data may be encoded in a scalable encoding manner, and the encoded video data frames may include base layer encoded data frames and/or enhancement layer encoded data frames.

Step 602, the base station configures different ARQ (Automatic Repeat request, automatic repeat request) parameters for the RLC AM entity corresponding to the DRB carrying the video application coded data frame, and sends the different ARQ parameters to the user through the RRC connection reconfiguration process terminal;

The base station can configure different ARQ parameters for different types of RLC PDUs encapsulating video application coded data frames according to the transmission protocol. For example, the maximum number of retransmissions of different types of RLC PDUs can be configured as different values. Specifically, the maximum number of retransmissions configured for the first type (basic type) of RLC PDUs is higher than that of the second type (enhanced type) The maximum number of retransmissions configured by the RLC PDU is high, that is, the basic type of RLC PDU is expected to be retransmitted multiple times to achieve better transmission quality; or, the parameter polling protocol data unit "poll PDU" can be configured according to the different types of RLC PDUs Configured as different values, specifically, the value of the polling protocol data unit configured for the RLC PDU of the first type (basic type) is lower than the value of the polling protocol data unit configured for the RLC PDU of the second type (enhanced type), That is, it is hoped that the basic type of RLC PDU can send a status report as soon as possible; or, the parameter polling bit "poll Byte" can be configured to different values according to different types of RLC PDUs, specifically, the first type (basic type) of RLC The polling bit value configured for the PDU is lower than the polling bit value configured for the second type (enhanced) RLC PDU, that is, it is hoped that the basic type RLC PDU can send a status report as soon as possible.

Step 603, the user terminal receives different ARQ parameters configured according to different types of RLC PDUs sent by the base station, 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 executed first, and then step 602 and step 603 may be executed according to the method provided in this embodiment, or step 602 and step 603 may be executed first. In step 603, step 601 is executed again.

Step 604, during the video transmission process, the sender judges the type of the RLC PDU encapsulating the video application coded data frame;

The sender in this step can be a base station or a user terminal. It should be noted that, in FIG. 6A , the base station is used as the sender and the user terminal is used as the receiver as an example for description. Specifically, when the video application sender is the video application server, the sender in this step is the base station, and the video application server sends the encoded video application encoded data frame to the base station, and then the base station determines the encapsulation of the video application encoded data frame Type of radio link control RLC protocol data unit PDU. When the video application sender is the user terminal, the sender in this step is the user terminal, and according to the protocol, the video application coded data frame of the application layer is sent to the transport layer, so that the user terminal can unpack the video application coded data frame Type of radio link control RLC protocol data unit PDU.

Wherein, 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 type of video application coded data frame through DPI. Specifically, 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 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 When applying coded data frames, it is judged that the type of RLC PDU is the first type; the first type of RLC PDU can also be called a basic type RLC PDU, or a high priority RLC PDU;

When the type of the video application coded data frame encapsulated by the RLC PDU is an enhanced layer video application coded data frame, it is judged that the type of the RLC PDU is the second type; the second type of RLC PDU can also be called an enhanced RLC PDU, Or low priority RLC PDU.

Further, in the embodiment of the present invention, the type and the priority can be in a one-to-one mapping relationship. Specifically, the first type can be mapped to the high priority one by one, that is, when it is determined that the type of the RLC PDU is the first type, it can also be That is, it is judged that the priority of the RLC PDU is high priority. For example, when the type of the video application coded data frame is the base layer video application coded data frame, or 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, then determine the RLC PDU priority is high priority;

The second type can be mapped with the low priority one by one, that is, when it is judged that the type of the RLC PDU is the second type, that is, it is judged that the priority of the RLC PDU is the low priority. For example, when the type of the video application coded data frame is an enhancement layer video application coded data frame, it is judged that the priority of the RLC PDU is low priority.

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

Step 605, when the type of the RLC PDU is the first type, apply the first automatic repeat 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 configuration parameter of the first automatic repeat request 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 number of retransmissions threshold of the type of RLC PDU, perform the operation that the RLC PDU reaches the maximum number of retransmissions. Specifically, if the first type of RLC PDU reaches the maximum number of retransmissions, it will report to the RRC layer (Radio Resource Control, radio resource control), triggering the RRC connection reestablishment process.

Optionally, if the polling protocol data unit value is configured for the RLC PDU of the first type, each time the sender transmits a new RLC PDU of the first type, the cumulative protocol technology unit value of the first type is increased by 1, when When the cumulative PTU value of the first type is greater than or equal to the configured polling PDU value, a polling indication is sent to the receiver. Poll indication poll is a field in the PDU, which is used to instruct the receiver to actively trigger the status report.

Optionally, if the polling bit value is configured for the RLC PDU of the first type, each time the sender transmits a new RLC PDU of the first type, the cumulative bit value of the first type is increased by 1, and when the cumulative bit value of the first type When the bit value is greater than or equal to the configured polling bit value, a polling indication is sent to the receiver.

Step 606, when the type of the RLC PDU is the second type, apply the second automatic repeat request configuration parameter, and send the RLC PDU packet to the receiver;

It should be noted that step 605 and step 606 are optional steps, that is, according to the type of RLC PDU judged in step 604, it is determined to execute step 605 or 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 number of retransmissions threshold of the type of RLC PDU, perform the operation that the RLC PDU reaches the maximum number of retransmissions. Specifically, if the RLC PDU of the second type reaches the maximum number of retransmissions, the first control packet is sent to the receiver, so that the receiver does not feed back the status report of the RLC PDU of the second type. The first control packet includes: the mobile receiving window MRW control PDU, and the MRW control PDU is used to instruct the receiver to update according to the value indicated in the MRW control PDU, so as not to feed back the status report of the second type RLC PDU.

Optionally, if the polling protocol data unit value is configured for the RLC PDU of the second type, each time the sender transmits a new RLC PDU of the second type, the cumulative protocol technology unit value of the first type is increased by 1, when When the accumulated PTU value of the second type is greater than or equal to the configured polling PDU value, a polling indication is sent to the receiver. Poll indication poll is a field in the PDU, which is used to instruct the receiver to actively trigger the status report.

Optionally, if the polling bit value is configured for the RLC PDU of the second type, when the sender transmits a new RLC PDU of the second type, the cumulative bit value of the second type increases by 1, when the cumulative bit value of the second type When the bit value is greater than or equal to the configured polling bit value, a polling indication is sent to the receiver.

Step 607, the receiver receives the RLC PDU packet sent by the sender, analyzes the RLC PDU packet, and determines the type of the RLC PDU;

Specifically, 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 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 When the video application encodes data frames, it is determined that the type of the RLC PDU is the first type;

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.

Further, in the embodiment of the present invention, the type and the priority can be in a one-to-one mapping relationship. Specifically, the first type can be mapped to the high priority one by one, that is, when it is determined that the type of the RLC PDU is the first type, it can also be That is, it is judged that the priority of the RLC PDU is high priority. The second type can be mapped with the low priority one by one, that is, when it is judged that the type of the RLC PDU is the second type, that is, it is judged that the priority of the RLC PDU is the low priority. For a specific judging manner, reference may be made to step 604 .

Step 608, when the type of the RLC PDU is the first type, the receiver applies the first automatic repeat request configuration parameter;

Optionally, when receiving the first type RLC PDU carrying the polling indication, actively send a status report to the corresponding sender according to the type of the RLC PDU.

Step 609, when the type of the RLC PDU is the second type, the receiver applies the second automatic repeat request configuration parameter.

When receiving the first control packet sent by the sender, carry out the first update of the value of the receiving state variable VR (R) according to the indication in the first control packet to not feed back the status report of the second type RLC PDU, specifically update VR (MR) is the sum of the new VR(R) and the receive window size. Among them, VR(MR) represents the upper edge of the receiving window, and VR(R) represents the lower edge of the receiving window, and these two variables jointly represent the receiving window.

Optionally, when receiving the second type RLC PDU carrying the polling indication, actively send a corresponding status report to the corresponding sender according to the type of the RLC PDU.

It should be noted that step 608 and step 609 in this embodiment are optional steps, that is, corresponding receiving processing is performed according to the type of the determined RLC PDU, that is, step 608 or step 609 is executed.

For example, in the schematic diagram of the transmission method shown in FIG. 6B , the video application sender is the video application server, the sender is the base station, and the receiver is the user terminal as an example for description. Specifically, (1) the base station first configures different automatic repeat request configuration parameters, and sends the configured different automatic repeat request configuration parameters to the user terminal; after receiving the user terminal, configures different automatic repeat request configuration parameters . (2) The video application server encodes the video application data, obtains the video application coded data frame, and sends the video application coded data frame to the base station; (3) The base station receives the video application coded data frame sent by the video application server, and then determines the encapsulation The type of RLC PDU for video application coded data frames. (4) When the type of RLC PDU is the first type, apply the first automatic repeat request configuration parameter, and send the RLC PDU packet to the user terminal; (5) when the type of RLC PDU is the second type, apply the second Automatically retransmit request configuration parameters, and send RLC PDU data packets to the user terminal; (6) After receiving the RLC PDU data packets, the user terminal determines the type of RLC PDU. (7) When the type of RLC PDU is the first type, apply the first automatic repeat request configuration parameter; (8) When the type of RLC PDU is the second type, receive the first control packet sent by the sender, and according to The indication in the received first control packet updates the value of the received state variable VR(R).

The embodiment of the present invention provides a transmission method, by judging the type of the RLC PDU encapsulating the video application coded data frame, and applying different automatic retransmission request parameters according to the judging priority. The solutions provided by the embodiments of the present invention can provide differentiated transmission services for different types of RLC PDUs, and give full play to the advantages of scalable video coding.

The embodiment of the present invention provides another transmission method, as shown in FIG. 7, the method includes:

Step 701, the video application sender encodes the data of the video application, and obtains a video application coded data frame;

The video application sender may be a video application server or a user terminal. Specifically, the video application data may be encoded in a scalable encoding manner, and the encoded video data frames may include base layer encoded data frames and/or enhancement layer encoded data frames.

Step 702, the base station configures different ARQ parameters for the RLC AM entity corresponding to the DRB carrying the video application coded data frame, and sends the 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 RLC PDUs encapsulating video application coded data frames according to the transmission protocol. For example, it can be configured that only high-priority RLC PDUs need to report status; different durations can be configured for the timer t_Reordering of RLC PDUs of different priorities.

Step 703, the user terminal receives different ARQ parameters configured according to different RLC PDU priorities sent by the base station, and configures these 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 can be executed first according to the method provided in this embodiment, and then step 702 and step 703 can be executed, or step 702 and step 703 can also be executed first. In step 703, step 701 is executed again.

Step 704, during the video transmission process, the sender judges the type of the RLCPDU encapsulating the video application coded data frame;

Wherein, 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 type of video application coded data frame through DPI. Specifically, 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 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 When applying coded data frames, it is judged that the type of RLC PDU is the first type; the first type of RLC PDU can also be called a basic type RLC PDU, or a high priority RLC PDU;

When the type of the video application coded data frame encapsulated by the RLC PDU is an enhanced layer video application coded data frame, it is judged that the type of the RLC PDU is the second type; the second type of RLC PDU can also be called an enhanced RLC PDU, Or low priority RLC PDU.

Further, in the embodiment of the present invention, the type and the priority can be in a one-to-one mapping relationship. Specifically, the first type can be mapped to the high priority one by one, that is, when it is determined that the type of the RLC PDU is the first type, it can also be That is, it is judged that the priority of the RLC PDU is high priority. For example, when the type of the video application coded data frame is the base layer video application coded data frame, or 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, then determine the RLC PDU priority is high priority;

The second type can be mapped with the low priority one by one, that is, when it is judged that the type of the RLC PDU is the second type, that is, it is judged that the priority of the RLC PDU is the low priority. For example, when the type of the video application coded data frame is an enhancement layer video application coded data frame, it is judged that the priority of the RLC PDU is low priority.

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

Step 705, when the type of the RLC PDU is the first type, the sender sends the type information of the judged RLC PDU and the RLC PDU packet to the receiver, so that the receiver performs a corresponding operation according to the type information of the RLC PDU;

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, by carrying the type information in the RLC PDU, that is, by adding a corresponding field carrying the type information in the header of the RLC PDU and sending it to the receiver. The type information can be the type information of the current RLC PDU itself; it can also be the type of the first N sent RLC PDUs, where N is an integer greater than or equal to 1. It should be noted that, the operations involving addition and subtraction of the sequence number SN of the RLC PDU in the embodiments of the present invention are addition and subtraction of the sending or receiving window size. 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 RLC PDU whose SN is 511.

Optionally, the RLC control PDU is preset, the sender sends the RLC control PDU to the receiver, and the RLC control PDU is used to carry the type information 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 placed in a control packet and sent to the receiver, for example, a second control packet is sent to the receiver, wherein the second control packet Including the preset RLC control PDU, the RLC control PDU is used to carry the type of the current RLC PDU or the type of the sent RLC PDU.

Step 706, when the type of the RLC PDU is the second type, the sender sends the type information of the judged RLC PDU and the RLC PDU packet to the receiver, so that the receiver performs a corresponding operation according to the type information of the RLC PDU;

It should be noted that step 705 and step 706 are optional steps, that is, according to the type of the determined RLC PDU, continue to execute step 705 or execute step 706.

The specific execution method of this step is the same as step 705, the difference is the type of RLC PDU, specifically can refer to step 705.

Step 707, the receiver receives the RLC PDU 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, wherein, 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 when 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, then determine that the type of RLC PDU is the first type; when the type of the video application coded data frame encapsulated by the RLC PDU is the enhancement layer video application coded During the data frame, then determine that the type of RLC PDU is the second type;

Further, in the embodiment of the present invention, the type and the priority can be in a one-to-one mapping relationship. Specifically, the first type can be mapped to the high priority one by one, that is, when it is determined that the type of the RLC PDU is the first type, it can also be That is, it is judged that the priority of the RLC PDU is high priority. The second type can be mapped with the low priority one by one, that is, when it is judged that the type of the RLC PDU is the second type, that is, it is judged that the priority of the RLC PDU is the low priority. For the specific judgment method, please refer to step 704;

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

Step 708, when the type of the RLC PDU is the first type, send the first status report of the RLC PDU to the sender;

Optionally, when the RLC PDU is the first type of RLC PDU, the first status report is sent to the first type of RLC PDU.

Step 709, when the type of the RLC PDU is the second type, after determining the type of the RLC PDU according to the type information of the RLC PDU sent by the sender, perform the second update of the value of the receiving state variable VR (R) so as not to feed back the second Status report of type RLC PDU.

Specifically, receive the second control packet, move the receiving window according to the type information carried by the preset RLC control PDU in the second control packet, and update the VR(R) value to the VR(R) value of the first RLC PDU, wherein, The first RLC PDU is the first RLC PDU in the received RLC PDU whose SN (series number, serial number) is greater than the SN of the current RLC PDU and has not been completely received.

It should be noted that step 708 and step 709 are optional steps, that is, corresponding receiving processing is performed according to the type of the determined RLC PDU.

The embodiment of the present invention provides a transmission method, by judging the type of the RLC PDU encapsulating the video application coding data frame, and performing different processing according to the different types of the judging RLC PDU, so that the advantages of the scalable coding method can be fully utilized.

It should be noted that, when the transport layer protocol of the above-mentioned video transmission uses TCP (TransmissionControl Protocol, transmission control protocol), for the enhanced layer video application coded data frame, if it is discarded due to the application of the above-mentioned embodiment, the receiver can Reconstruct a data packet of a video application coded data frame and submit it to the TCP layer, thereby avoiding unnecessary TCP layer retransmission.

An embodiment of the present invention provides a transmission device. The device may be an RLC AM entity sender ("sender" for short), and the sender may be a base station (such as an evolved base station) or a user terminal, as shown in FIG. 8 , the The device includes: a judging unit 801, a processor 802, and the processor 802 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 Module 8025, the sixth processing module 8026;

A judging unit 801, configured to judge the type of the radio link control RLC protocol data unit PDU encapsulating the video application coded data frame;

Further, the judging unit 801 is specifically configured to: 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 type of the video application coded data frame encapsulated by the RLC PDU includes a base layer video application When the coded data frame and the enhanced layer video application coded data frame, then judge that the type of RLC PDU is the first type; The type of RLC PDU is the second type.

The processor 802 is configured to adopt the first processing method when the type of the RLC PDU is the first type, and perform the first sending processing on the RLC PDU; and when the type of the RLC PDU is the second type, adopt the second processing method , and perform a second sending process on the RLC PDU, wherein the second processing method is different from the first processing method.

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

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

The third processing module 8023 in the processor 802 is used to send the type information of the RLC PDU and the RLC PDU data packet to the receiver when the type of the RLC PDU is the first type, so that the receiver performs according to the type information of the RLC PDU corresponding operation;

The fourth processing module 8024 in the processor 802 is used to send the first control packet after sending the RLC PDU data packet to the RLC AM entity receiver to which the RLC PDU belongs when the type of the RLC PDU is the second type, so that the receiver The party does not feed back a status report for the second type RLC PDU; or,

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

The sixth processing module 8026 in the processor 802 is used to send the type information of the RLC PDU and the RLC PDU data packet to the receiver when the type of the RLC PDU is the second type, so that the receiver performs according to the type information of the RLC PDU corresponding operation.

Further, when the automatic repeat request configuration parameter is the maximum number of retransmissions, the second processing module 8022 is configured to send a request to the radio resource control RRC when the cumulative number of retransmissions of the first type RLC PDU reaches the configured maximum number of retransmissions threshold. layer reports and triggers RRC re-establishment;

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

Wherein, the first control packet may include: mobile receiving window MRW control PDU, and the MRW control PDU is used to instruct the receiver to update according to the value indicated in the MRW control PDU, so as not to feed back the status report of the second type RLC PDU.

Further, the third processing module 8023 or the sixth processing module 8036 is specifically used for:

Add a field carrying a type message in the header of the RLC PDU and send it to the receiver. The type message 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. The RLC control PDU is used to carry the type of the current RLC PDU or the type of the sent RLC PDU.

It should be noted that, in this embodiment, the functions of the judging unit 801 and the processor 802 can be completed by one processor. In other words, this processor is used to perform the function of judging the type of RLC PDU and perform the function according to the different types of RLC PDU. The function of differentiated processing.

The embodiment of the present invention provides a kind of transmission device, judges the type of RLC PDU by judging unit; Processor, is used for when the type of RLC PDU is the first type, adopts the first processing mode, and carries out the first transmission processing to RLC PDU ; and when the type of the RLC PDU is the second type, adopt the second processing method, and perform the second sending processing on the RLC PDU, wherein the second processing method is different from the first processing method. The solutions provided by the embodiments of the present invention make full use of the advantages of the scalable coding method through different processing of different types of RLC PDUs.

An embodiment of the present invention provides a transmission device. The device may be an RLC AM entity receiver (referred to as "receiver"), and the sender may be a user terminal or a base station (such as an "evolved base station"), as shown in FIG. 9 , The device includes: a receiver 901, a processor 902, wherein the processor 902 includes one or a combination of the following modules: a first processing module 9031, a second processing module 9032, a third processing module 9033, a fourth processing module 9034, The fifth processing module 9035;

The receiver 901 is configured to receive the RLC PDU packet sent by the sender of the RLC response mode AM entity to which the radio link control RLC protocol data unit PDU of the video application coded data frame belongs;

According to the RLC PDU data packet, the processor 902 is used to determine the type of the RLC PDU, and when the type of the RLC PDU is the first type, adopt the first receiving processing method; and when the type of the RLC PDU is the second type, adopt A second receiving and processing manner, wherein the second receiving and processing manner is different from the first receiving and processing manner.

Further, the processor 902 is specifically configured to: determine the type of the RLC PDU by parsing the RLC PDU, wherein, 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 type of the video application coded data frame encapsulated by the RLC PDU is When the type of the encapsulated video application coded data frame includes a base layer video application coded data frame and an enhancement layer video application coded data frame, then determine that the type of the RLC PDU is the first type; and when the video application coded data frame encapsulated by the RLC PDU When the type is an enhancement layer video application coded data frame, then determine 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.

Further, when the type of the RLC PDU is the first type, the first processing module 9021 in the processor 902 is configured to send the first status report of the RLC PDU to the sender when the type of the RLC PDU is the first type; Or, the second processing module 9022 in the processor 902 is configured to apply the first automatic repeat request configuration parameter when the type of the RLC PDU is the first type when the type of the RLC PDU is the first type; or, processing The third processing module 9023 in the device 902 is used to receive the type information of the RLC PDU sent by the sender when the type of the RLC PDU is the first type, and send it to the sender Second status report of RLC PDU;

The fourth processing module 9024 in the processor 902 is configured to receive the first control packet sent by the sender when the type of the RLC PDU is the second type, and receive the state variable according to the indication in the received first control packet The first update of the VR (R) value is to not feed back the status report of the second type RLC PDU; or, the fifth processing module 9025 in the processor 902 is used to send The type information of the RLC PDU sent by the party, after determining the type of the RLC PDU, carries out the second update of the value of the receiving state variable VR (R) so as not to feed back the status report of the second type RLC PDU.

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

The second update of the received state variable VR (R) value may be to update the VR (R) value to the VR (R) value of the first RLC PDU, wherein the first RLC PDU is the first SN ( series number (serial number) is greater than the SN of the current RLC PDU, and the RLC PDU has not been completely received.

The embodiment of the present invention provides a transmission device, which receives the RLC PDU data packet sent by the sender through the receiver, and the processor is used to determine the type of the RLC PDU, and when the type of the RLC PDU is the first type, the first receiving method is used. Processing method; when the type of RLC PDU is the second type, and adopt the second receiving processing method, wherein, the second receiving processing method is different from the first receiving processing method. This enables the device provided by the invention to provide differentiated transmission services and give full play to the advantages 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 realized by means of software plus necessary general-purpose hardware, and of course also by hardware, but in many cases the former is a better embodiment . Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, such as a floppy disk of a computer , a hard disk or an optical disk, etc., including several instructions for enabling a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments of the present invention.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (16)

1. A transmission method, characterized in that, comprising: Determine the type of the radio link control RLC protocol data unit PDU that encapsulates the video application coded data frame; When the type of the RLC PDU is the first type, adopt the first processing mode, and carry out the first sending processing to the RLC PDU; When the type of the RLC PDU is the second type, a second processing method is adopted, and a second sending processing 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 said judging the type of the radio link control RLC protocol data unit PDU encapsulating the video application coded data frame comprises: 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 type of the video application coded data frame encapsulated by the RLC PDU includes a base layer video application coded data frame and an enhanced When layer video is used to code the data frame, it is judged that the type of the RLC PDU is the first type; 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. 3. The method according to claim 2, wherein said adopting the first processing mode, and carrying out the first sending processing to the RLC PDU comprises: Send 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 data packet to the receiver; or, Send the type information of the RLC PDU and the RLC PDU packet to the receiver, so that the receiver performs a corresponding operation according to the type information of the RLC PDU; and / or, Said adopting the second processing mode, and carrying out the second sending processing on the RLC PDU includes: After sending the RLC PDU 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 the status report of the second type RLC PDU; or, Applying a second automatic repeat request configuration parameter, and sending the RLC PDU packet to the receiver; or, Send the type information of the RLC PDU and the RLC PDU data packet to the receiver, so that the receiver performs a corresponding operation according to the type information of the RLC PDU. 4. The method of claim 3, wherein, When the automatic repeat request configuration parameter includes the maximum number of retransmissions, the application of the first automatic repeat request configuration parameter includes: when the cumulative number of retransmissions of the first type RLC PDU reaches the configured maximum number of retransmissions threshold, send The radio resource control RRC layer reports and triggers RRC re-establishment; The application of the second automatic repeat request configuration parameters includes: when the accumulated retransmission times of the second type RLC PDU reaches the configured maximum retransmission times threshold, sending the first control packet to the receiver, so that the The receiver does not feed back status reports for Type 2 RLC PDUs. 5. The method according to claim 3, wherein, sending the type information of the RLC PDU and the RLC PDU packet to the receiver comprises: Add a field carrying type information in 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 RLC PDU that has been sent; or, Preset an RLC control PDU, and send 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 of the sent RLC PDU. 6. A transmission method, characterized in that, comprising: Receive the RLC PDU data packet sent by the sender of the RLC response mode AM entity of the radio link control RLC protocol data unit PDU that encapsulates the video application coded data frame; Determine the type of the RLC PDU; When the type of the RLC PDU is the first type, adopt the first receiving and processing method; When the type of the RLC PDU is the second type, a second receiving and processing method is adopted, wherein the second receiving and processing method is different from the first receiving and processing method. 7. The method according to claim 6, wherein the type determining the RLC PDU comprises: Determine the type of the RLC PDU by parsing the RLC PDU, wherein, 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 type of the video application coded data frame encapsulated by the RLC PDU is 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, it is determined that the type of the RLC PDU is the first type, when the video application encapsulated by the RLC PDU When the type of the encoded data frame is an enhancement layer video application encoded data frame, then determine 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. 8. The method according to claim 7, wherein said adopting the first receiving and processing method comprises: sending a first status report of the RLC PDU to the sender; or, applying the first automatic repeat request configuration parameter; or, Receive the type information of the RLC PDU sent by the sender, and send the second status report of the RLC PDU to the sender; and / or, Said adopting the second receiving processing method includes: Receiving the first control packet sent by the sender, and performing the first update of the value of the receiving state variable VR (R) according to the received first control packet to not feed back the status report of the second type RLC PDU; or , According to the type information of the RLC PDU sent by the sender, after determining the type of the RLC PDU, the second update of the value of the receiving state variable VR (R) is performed so as not to feed back the status report of the second type RLC PDU. 9. A transmission device, characterized in that it comprises: A judging unit, configured to judge the type of the radio link control RLC protocol data unit PDU encapsulating the video application coded data frame; A processor, configured to adopt the first processing mode when the type of the RLC PDU is the first type, and perform the first sending processing 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 processing on the RLC PDU, wherein the second processing manner is different from the first processing manner. 10. The device according to claim 9, wherein the judging unit is specifically used for: 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 type of the video application coded data frame encapsulated by the RLC PDU includes a base layer video application coded data frame and an enhanced When the layer video application coded data frame, then judge that the type of the RLC PI)U 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. 11. The device according to claim 10, wherein the processor comprises: The first processing module is used to send the RLC PDU packet to the receiver of the RLC AM entity to which the RLC PDU belongs when the type of the RLC PDU is the first type; or, the second processing module is used to send the RLC PDU data packet when the RLC PDU belongs to When the type of RLC PDU is the first type, the first automatic repeat request configuration parameter is applied, and the RLC PDU data packet is sent to the receiver; or, the third processing module is used when the type of the RLC PDU When it is the first type, the type information of the RLC PDU and the RLC PDU packet are sent to the receiver, so that the receiver performs a corresponding operation according to the type information of the RLC PDU; The fourth processing module is used to send the first control packet after sending the RLC PDU data packet to the receiver of the RLC AM entity to which the RLC PDU belongs when the type of the RLC PDU is the second type, so that the receiving The party does not feed back the status report of the second type RLC PDU; or, the fifth processing module is used to apply the second automatic repeat request configuration parameter when the type of the RLC PDU is the second type, and the RLC PDU data The packet is sent to the receiver; or, the sixth processing module is configured to send the type information of the RLC PDU and the RLC PDU data packet to the receiver when the type of the RLC PDU is the second type side, so that the receiver performs corresponding operations according to the type information of the RLC PDU. 12. The device according to claim 11, wherein when the automatic repeat 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 number of retransmissions 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 the configured maximum number of retransmissions, so that the receiver does not feedback Status reporting for Type 2 RLC PDUs. 13. The device according to claim 11, wherein the third processing module or the sixth processing module is specifically used for: Add a field carrying type information in 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 RLC PDU that has been sent; or, Preset an RLC control PDU, and send 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 of the sent RLC PDU. 14. A transmission device, characterized in that it comprises: The receiver is used to receive the RLC PDU data packet sent by the sender of the RLC response mode AM entity to which the radio link control RLC protocol data unit PDU of the video application coded data frame belongs; A processor, configured to determine the type of the RLC PDU, and when the type of the RLC PDU is the first type, adopt the first receiving processing method; and when the type of the RLC PDU is the second type, adopt the first Two receiving and processing methods, wherein the second receiving and processing method is different from the first receiving and processing method. 15. The device according to claim 14, wherein the processor is specifically configured to: Determine the type of the RLC PDU by parsing the RLC PDU, wherein, 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 type of the video application coded data frame encapsulated by the RLC PDU is 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, it is determined that the type of the RLC PDU is the first type, and when the video encapsulated by the RLC PDU When the type of the application coded data frame is an enhancement layer video application coded data frame, then 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. 16. The apparatus according to claim 15, wherein the processor comprises: The first processing module is used to send the first status report of the RLC PDU to the sender when the type of the RLC PDU is the first type; or, the second processing module is used to send the first status report of the RLC PDU to the sender; When the type of the RLC PDU is the first type, apply the first automatic repeat request configuration parameter; or, a third processing module, configured to receive the RLC sent by the sender when the type of the RLC PDU is the first type Type information of the PDU, and send the second status report of the RLC PDU to the sender; The fourth processing module is used to receive the first control packet sent by the sender when the type of the RLC PDU is the second type, and receive the state variable VR( R) The first update of the value is to not feed back the status report of the second type RLC PDU; or, the fifth processing module is used to determine the type of the RLC PDU according to the type information of the RLC PDU sent by the sender , performing a second update of the value of the receiving state variable VR (R) to not feed back the status report of the second type RLC PDU.

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