CN103534973B - A kind of methods, devices and systems reducing transmission control layer confirmation message - Google Patents

Abstract

The embodiment of the present invention discloses a method, device and system for reducing transmission control layer acknowledgment messages, which relate to the communication field and solve the problem that in wireless communication, the acknowledgment messages sent by the receiving end occupy a large amount of air interface resources and cause problems for other communication data. The problem of interference. The solution provided by the present invention is: receiving the data message sent by the sending end and the sending end checksum; the sending end checksum is generated by the sending end according to the data message; according to the received data message The text generates the checksum of the receiving end; when it is judged that the checksum of the sending end is the same as the checksum of the receiving end, the data message is passed to the transmission control layer of the receiving end; the data received is returned to the sending end Acknowledgment: discarding the transmission control layer confirmation message when receiving the transmission control layer confirmation message sent by the transmission control layer of the receiving end. The present invention is mainly applied in network communication systems.

Description

A method, device and system for reducing transmission control layer confirmation messages

technical field

The invention relates to the field of communications, in particular to a method, device and system for reducing transmission control layer confirmation messages.

Background technique

In the process of wireless data transmission, the network side and the user side generally follow the five-layer model of data transmission, namely, application layer, transmission control (Transfer Control Protocol, TCP) layer, network layer, radio link control (Radio link control, RLC) layer and physical (Physical, PHY) layer. When the network side sends data to the user side, the data starts from the application layer on the network side, passes through the transmission control layer, network layer, radio link control layer and physical layer on the network side, and then reaches the physical layer on the user side via the transmission link , and go through the radio link control layer and network layer on the user side, and finally reach the application layer on the user side. vice versa.

In order to avoid data loss or data errors during the transmission process, a data confirmation mechanism is introduced in the above data transmission process. After the sender sends data once, it will only send the second data after receiving the confirmation information fed back by the receiver. secondary data.

Generally, the data to be sent undergoes two detections. After the current terminal receives data from other terminals, the physical layer first detects the received data through a checksum. The so-called checksum is a value converted from the received data according to the checksum algorithm, which is used to detect whether the data is lost or damaged during the sending process. When the verification is correct, the physical layer of the current terminal sends the detection result to the radio link control layer, and the radio link control layer sends the data to the upper transmission control layer, and the transmission control layer performs a second detection on the data.

For example, after the wireless link control layer on the network side receives the data ABC sent by the upper layer, it sends the data to the physical layer on the network side, and the physical layer on the network side performs a check operation on the data ABC to obtain a checksum on the network side, and then , and send the data ABC and the network-side checksum to the user-side physical layer. The user-side physical layer performs a check operation on the data ABC to obtain the user-side checksum, then compares the network-side checksum with the user-side checksum, and sends the data ABC and the comparison result to the upper layer to reach the user-side transmission control layer. The user-side transmission control layer detects the data according to the calculation method of this layer, generates ACK (Acknowledgment, confirmation information) according to the detection result, and sends the ACK back to the network side, and the network-side transmission control layer decides to send the data according to the received ACK. Next data or resend last data.

In the process of realizing the above scheme, there are at least the following technical problems:

The transmission control layer of the data receiver needs to reply a large number of ACKs, occupying a large number of air interface resources, and a large number of ACKs interfere with other communication data.

Contents of the invention

Embodiments of the present invention provide a method, device, and system for reducing transmission control layer acknowledgment messages, solving the problem that during data transmission, the receiver transmission control layer must send acknowledgment messages for each received data, occupying a large amount of space. Interface resources, technical issues that interfere with other communication data.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In the first aspect, a method for reducing transmission control layer confirmation messages is provided, including:

receiving the data message sent by the sender and the checksum of the sender; the checksum of the sender is generated by the sender according to the data message;

Generate a checksum at the receiving end according to the received data message;

When it is judged that the checksum of the sending end is the same as the checksum of the receiving end, the data message is delivered to the transmission control layer of the receiving end; wherein, after receiving the data message, the transmission control layer of the receiving end , send a transmission control layer confirmation message; and, when it is judged that the checksum of the sending end is the same as the checksum of the receiving end, send a data reception confirmation to the sending end, so that the sending end can receive the After the data is received and confirmed, construct the transmission control layer confirmation message of the sending end and send the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end;

When the transmission control layer confirmation message sent by the transmission control layer of the receiving end is received, the transmission control layer confirmation message is discarded, thereby reducing the number of transmission control layer confirmation messages.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the method further includes:

When it is judged that the checksum of the sending end is different from the checksum of the receiving end, the data packet is discarded.

With reference to the first aspect, in a second possible implementation of the first aspect, when the receiving end is a user terminal and the sending end is a network side, receiving the data message sent by the sending end and the sending end calibration Before checking and, described method also comprises:

The user terminal sends reduced transmission control layer acknowledgment message capability information to the network side, so that the network side determines that the user terminal has the ability to reduce the transmission control layer according to the reduced transmission control layer acknowledgment message capability information. Ability to acknowledge packets.

With reference to the second possible implementation of the first aspect, in the third possible implementation of the first aspect, before sending the reduced transmission control layer confirmation message capability information to the network side, the method further includes :

The user terminal receives the reduced transmission control layer confirmation message capability query message sent by the network side.

With reference to the second possible implementation manner or the third possible implementation manner of the first aspect, in a fourth possible implementation manner, after sending the reduced transmission control layer confirmation message capability information to the network side, the The method also includes:

receiving the start message of reducing transmission control layer acknowledgment messages sent by the network side, so as to enable the function of reducing transmission control layer acknowledgment messages.

In the second aspect, a method for reducing transmission control layer confirmation messages is provided, including:

Receive the data message sent by the transmission control layer of the sending end;

generating a sending end checksum according to the data message sent by the transmission control layer of the sending end;

Send the data message and the checksum of the sending end to the receiving end, so that the receiving end generates a checksum of the receiving end according to the received data message, and when judging the checksum of the sending end When the checksum of the receiving end is the same, sending a data reception confirmation to the sending end;

receiving the data reception confirmation returned by the receiving end; the data receiving confirmation is returned to the sending end by the receiving end when the checksum of the sending end is the same as the checksum of the receiving end;

After receiving the data reception confirmation, constructing a transmission control layer confirmation message at the sending end;

passing the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end.

With reference to the second aspect, in the first possible implementation manner of the second aspect, the method further includes: after transmitting the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end, the sending The transmission control layer at the end continues to send other data packets in sequence.

With reference to the second aspect, in a second possible implementation of the second aspect, after sending the data message and the sender checksum to the receiver, the method further includes:

When the data reception acknowledgment is not received within the preset waiting time, the transmission control layer at the sending end resends the data message.

With reference to the second aspect, in a third possible implementation of the second aspect, after receiving the data message sent by the transmission control layer of the sending end, further include:

When the data message sent by the transmission control layer of the sending end is leaked, the data message missing feedback information is constructed; the data message missing feedback information includes the information of the missing data message;

Sending the missing data message feedback information to the transmission control layer of the sending end, so that the transmission control layer of the sending end sends the missing data message according to the missing data message feedback information.

With reference to the second aspect, in a fourth possible implementation of the second aspect, when the receiving end is a user terminal and the sending end is a network side, before receiving the data message sent by the transmission control layer of the sending end , the method also includes:

The network side receives the reduced transmission control layer acknowledgment message capability information sent by the user terminal, so that the network side determines that the user terminal has the ability to reduce the transmission control layer according to the reduced transmission control layer acknowledgment message capability information. The ability of the layer to confirm the message.

With reference to the fourth possible implementation of the second aspect, in the fifth possible implementation of the second aspect, before receiving the reduced transmission control layer confirmation packet capability information sent by the user terminal, the method further include:

Sending a reduced transmission control layer confirmation message capability query message to the user terminal.

With reference to the fourth possible implementation manner or the fifth possible implementation manner of the second aspect, in the sixth possible implementation manner of the second aspect, after receiving the transmission reduction control layer confirmation message sent by the user terminal After the capability information, the method further includes:

Sending the start message of reducing transmission control layer acknowledgment messages to the user terminal, so that the user terminal enables the function of reducing transmission control layer acknowledgment messages.

In a third aspect, a receiving end is provided, including:

The receiving unit is used to receive the data message sent by the sending end and the checksum of the sending end; the checksum of the sending end is generated by the sending end according to the data message;

a checksum generating unit, configured to generate a receiving end checksum according to the data message received by the receiving unit;

The receiving end transfer unit is used to transfer the data message to the transmission control layer of the receiving end when judging that the sending end checksum is the same as the receiving end checksum generated by the checksum generating unit; wherein, After receiving the data message, the transmission control layer at the receiving end sends a transmission control layer confirmation message;

A data confirmation sending unit, configured to return a data reception acknowledgment to the sending end when it is judged that the sending end checksum is the same as the receiving end checksum generated by the checksum generating unit; so that the sending end After receiving the data reception confirmation, constructing a transmission control layer confirmation message of the sending end and sending the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end;

A confirmation message discarding unit, configured to discard the transmission control layer confirmation message when receiving the transmission control layer confirmation message sent by the transmission control layer of the receiving end, thereby reducing the transmission control layer confirmation message quantity.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the receiving end further includes:

A data message discarding unit, configured to discard the data message when it is judged that the checksum of the sending end is different from the checksum of the receiving end generated by the checksum generating unit.

With reference to the third aspect, in a second possible implementation manner of the third aspect, when the receiving end is a user terminal and the sending end is a network side, the receiving end further includes:

A capability information sending unit, configured to send the reduced transmission control layer confirmation message capability information to the network side before the receiving unit receives the data message sent by the sender and the checksum of the sender, so that the network side according to The reducing transmission control layer confirmation message capability information determines that the user terminal has the capability of reducing the transmission control confirmation message.

With reference to the second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the receiving unit is further configured to send the reduction transmission to the network side by the capability information sending unit Before the control layer confirms the message capability information, it receives the reduced transmission control layer confirmation message capability query message sent by the network side.

With reference to the second or third possible implementation of the third aspect, in a fourth possible implementation of the third aspect, the receiving unit is further configured to, when the capability information sending unit sends the network After sending the reduced transmission control layer confirmation message capability information, the side receives the reduced transmission control layer confirmation message start message sent by the network side, so as to enable the function of reducing the transmission control layer confirmation message.

In a fourth aspect, a sending end is provided, including:

A data message receiving unit, configured to receive a data message sent by the transmission control layer of the sending end;

A checksum generation unit, configured to generate a sender checksum according to the data message sent by the transmission control layer received by the data message receiving unit;

a sending unit, configured to send the data message and the checksum of the sending end to the receiving end, so that the receiving end generates a receiving end checksum according to the received data message, and when judging the When the checksum of the sending end is the same as the checksum of the receiving end, sending a data reception confirmation to the sending end;

A data confirmation receiving unit, configured to receive a data reception confirmation returned by the receiving end; the data receiving confirmation is returned to the sending end by the receiving end when the checksum of the sending end is the same as the checksum of the receiving end ;

A confirmation message construction unit, configured to construct a transmission control layer confirmation message at the sending end after the data confirmation unit receives the data reception confirmation;

An acknowledgment message delivery unit, configured to deliver the acknowledgment message of the transmission control layer of the sending end constructed by the acknowledgment message construction unit to the transmission control layer of the sending end.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the sending unit is further configured to, at the confirmation message delivery unit, deliver the sending end transmission control layer confirmation message to the After the transmission control layer of the sending end, continue to send other data packets in sequence.

With reference to the fourth aspect, in a second possible implementation manner of the fourth aspect, the transmission control layer at the sending end is further configured to resend the received data when the data reception confirmation is not received within a preset waiting time. the data message.

With reference to the fourth aspect, in a third possible implementation of the fourth aspect, the confirmation message construction unit is also used for:

When the data message sent by the transmission control layer of the sending end is leaked, the data message missing feedback information is constructed; the data message missing feedback information includes the information of the missing data message;

Sending the missing data message feedback information to the transmission control layer of the sending end, so that the transmission control layer of the sending end sends the missing data message according to the missing data message feedback information.

With reference to the fourth aspect, in a fourth possible implementation manner of the fourth aspect, when the receiving end is a user terminal and the sending end is a network side, the sending end further includes:

The capability information receiving unit is configured to receive the capability information of the reduced transmission control layer confirmation message sent by the user terminal, so that the network side can determine that the user terminal has the capability of the reduced transmission control layer confirmation message according to the capability information of the reduced transmission control layer confirmation message. Describes the ability of the transport control layer to acknowledge messages.

With reference to the fourth possible implementation manner of the fourth aspect, in a fifth possible implementation manner of the fourth aspect, the sending unit is further configured to receive, at the capability information receiving unit, the reduction information sent by the user terminal. Before the transmission control layer confirms the message capability information, it sends a reduced transmission control layer confirmation message capability query message to the user terminal.

With reference to the fourth possible implementation manner or the fifth possible implementation manner of the fourth aspect, in a sixth possible implementation manner of the fourth aspect, the sending unit is further configured to, in the capability information receiving unit After receiving the reduced transmission control layer confirmation message capability information sent by the user terminal, sending a reduced transmission control layer confirmation message start message to the user terminal, so that the user terminal enables the function of reducing the transmission control layer confirmation message.

In the fifth aspect, a receiving end is provided, including:

The receiver is configured to receive the data message sent by the sending end and the checksum of the sending end; the checksum of the sending end is generated by the sending end according to the data message;

A processor, configured to generate a receiving end checksum according to the received data message, and when the sending end checksum is the same as the receiving end checksum, transfer the data message to the receiving end's checksum Transmission control layer; wherein, after receiving the data message, the transmission control layer of the receiving end sends a transmission control layer confirmation message; the processor is also used for receiving the transmission control layer sent by the transmission control layer of the receiving end When confirming the message, the transmission control layer confirmation message is discarded, thereby reducing the number of transmission control layer confirmation messages;

a sender, configured to return a data reception confirmation to the sending terminal when the checksum of the sending terminal is the same as the checksum of the receiving terminal; so that the transmitting terminal constructs a sending terminal after receiving the data receiving confirmation; The transmission control layer of the sending end confirms the message and sends the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the processor is further configured to convert the data to The packet is discarded.

With reference to the fifth aspect, in a second possible implementation manner of the fifth aspect, when the receiving end is a user terminal and the sending end is a network side, the transmitter is further configured to:

Before the receiver receives the data message sent by the sender and the checksum of the sender, send the reduced transmission control layer confirmation message capability information to the network side, so that the network side can confirm according to the reduced transmission control layer Message capability information, determining that the user terminal has the capability of reducing the transmission control into a confirmation message.

With reference to the second possible implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect, the receiver is further configured to, when the sender sends the transmission control layer Before confirming the message capability information, receiving the reduced transmission control layer confirmation message capability query message sent by the network side.

With reference to the second possible implementation manner or the third possible implementation manner of the fifth aspect, in a fourth possible implementation manner of the fifth aspect, when the sender transmits the reduced transmission control layer to the network side After confirming the message capability information, receiving the start message of reducing the transmission control layer confirmation message sent by the network side, so as to start the function of reducing the transmission control layer confirmation message.

In a sixth aspect, a sending end is provided, including:

A processor, configured to receive a data message sent by the transmission control layer of the sending end; generate a sending end checksum according to the data message sent by the transmission control layer of the sending end;

a transmitter, configured to send the data message and the checksum of the sending end to the receiving end, so that the receiving end generates a receiving end checksum according to the received data message, and when judging the When the checksum of the sending end is the same as the checksum of the receiving end, sending a data reception confirmation to the sending end;

a receiver, configured to receive a data reception confirmation returned by the receiving end;

The processor is further configured to construct a transmission control layer confirmation message of the sending end after the receiver receives the data reception confirmation; and pass the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end layer.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the sender is further configured to, at the processor, pass the transmission control layer confirmation message of the sending end to the transmission of the sending end After the control layer, continue to send other data packets in sequence.

With reference to the sixth aspect, in a second possible implementation manner of the sixth aspect, the transmitter is further configured to resend the data when the data reception confirmation is not received within a preset waiting time message.

With reference to the sixth aspect, in a third possible implementation manner of the sixth aspect, the processor is further configured to:

When the data message sent by the transmission control layer of the sending end is leaked, the data message missing feedback information is constructed; the data message missing feedback information includes the information of the missing data message;

Sending the missing data message feedback information to the transmission control layer of the sending end, so that the transmission control layer of the sending end sends the missing data message according to the missing data message feedback information.

With reference to the sixth aspect, in a fourth possible implementation manner of the sixth aspect, when the receiving end is a user terminal and the sending end is a network side, the receiver is further configured to:

receiving the reduced transmission control layer confirmation message capability information sent by the user terminal, so that the network side determines that the user terminal has the ability to reduce the transmission control layer confirmation message according to the reduced transmission control layer confirmation message capability information Ability.

With reference to the fourth possible implementation manner of the sixth aspect, in a fifth possible implementation manner of the sixth aspect, the transmitter is further configured to receive, at the receiver, the reduced transmission control sent by the user terminal Before the layer confirms the message capability information, it sends a reduced transmission control layer confirmation message capability query message to the user terminal.

With reference to the fourth possible implementation manner or the fifth possible implementation manner of the sixth aspect, in a sixth possible implementation manner of the sixth aspect, the transmitter is further configured to, when the receiver receives the After the capability information of the reduced transmission control layer confirmation message sent by the user terminal, send a reduced transmission control layer confirmation message start message to the user terminal, so that the user terminal starts the function of reducing the transmission control layer confirmation message.

In the seventh aspect, a system for reducing transmission control layer confirmation messages is provided, including: a sending end, a receiving end, and an air interface; wherein:

The sending end includes any sending end described in the fifth aspect;

The receiving end includes any receiving end described in the sixth aspect;

The air interface is used to connect the sending end and the receiving end; the air interface is an interface provided for wireless connection between the sending end and the receiving end.

Embodiments of the present invention provide a method, device and system for reducing transmission control layer confirmation messages. On the one hand, the receiving end receives the data message sent by the sending end and the checksum of the sending end; according to the received data message The text generates the checksum of the receiving end; when it is judged that the checksum of the sending end is the same as the checksum of the receiving end, the data message is passed to the transmission control layer of the receiving end; the data received is returned to the sending end Acknowledgment: discarding the transmission control layer confirmation message when receiving the transmission control layer confirmation message sent by the transmission control layer of the receiving end. On the other hand, the sending end receives the data message sent by the transmission control layer of the sending end; generates the sending end checksum according to the data message sent by the transmission control layer of the sending end; The end checksum is sent to the receiving end; the data receiving confirmation returned by the receiving end is received; the transmission control layer confirmation message of the sending end is constructed; the transmission control layer confirmation message of the sending end is passed to the transmission control layer of the sending end . Through the above solution, the number of confirmation messages transmitted from the receiving end to the sending end can be reduced, and the problem that the confirmation messages sent by the receiving end occupy a large amount of air interface resources and cause interference to other communication data can be solved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or 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 without any creative effort.

FIG. 1 is a schematic diagram of sending data from a sending end to a receiving end in the prior art;

FIG. 2 is a block flow diagram of a receiving end of a method for reducing transmission control layer confirmation messages in Embodiment 1 of the present invention;

FIG. 3 is a flowchart of a sending end of a method for reducing transmission control layer confirmation messages in Embodiment 1 of the present invention;

FIG. 4 is a block flow diagram of another method for reducing transmission control layer confirmation messages in Embodiment 2 of the present invention;

FIG. 5 is a schematic diagram of another method for reducing transmission control layer confirmation messages in Embodiment 2 of the present invention;

FIG. 6 is a block flow diagram of the sending end of another method for reducing transmission control layer acknowledgment messages in Embodiment 2 of the present invention;

FIG. 7 is a block diagram of a receiving end in Embodiment 3 of the present invention;

FIG. 8a is a block diagram of another receiving end in Embodiment 3 of the present invention;

FIG. 8b is a block diagram of another receiving end in Embodiment 3 of the present invention;

FIG. 9a is a block diagram of a sending end in Embodiment 3 of the present invention;

FIG. 9b is a block diagram of another sending end in Embodiment 3 of the present invention;

FIG. 10 is a block diagram of a receiving end in Embodiment 4 of the present invention;

FIG. 11 is a block diagram of a sending end in Embodiment 4 of the present invention;

FIG. 12 is a schematic diagram of a system for reducing transmission control layer confirmation messages in Embodiment 4 of the present invention;

Fig. 13 is a schematic diagram of determining whether the user terminal has the ability to reduce transmission control layer acknowledgment messages in Embodiment 2 of the present invention.

detailed description

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 making creative efforts belong to the protection scope of the present invention.

In the current network communication, the process of transmitting the data message from the sending end to the receiving end can refer to Figure 1, in which, the transmission control layer of the sending end A sends the data message to be transmitted to the wireless link control layer of A, and the wireless link control layer of A The link control layer sends the data message to the physical layer of A, and after the physical layer of A generates a checksum based on the data message, it sends the data message and the corresponding checksum to the remote receiving end B . The physical layer of B also generates a checksum according to the received data message, and then the radio link control layer above the physical layer of B judges whether the two checksums of the sending end and the receiving end are consistent. When the checksums are consistent, the wireless link control layer of B will continue to pass the data message to the transmission control layer of B, and the transmission control layer of B will generate a confirmation message after receiving the data message, and the confirmation message will be layer by layer Passed to the physical layer of B, and then returned to A. The physical layer of A uploads the received confirmation message sent back by B layer by layer until it is passed to the transmission control layer of A, and the transmission control layer of A decides to send the next data message or repeat Upload a datagram. It can be seen from the above description that each time A sends a data message from the transmission control layer, the subsequent steps cannot be performed until the transmission control layer of B returns a confirmation message. A large number of confirmation messages do not carry valid data and will occupy a huge amount of air interface resources.

Example 1:

An embodiment of the present invention provides a method for reducing transmission control layer confirmation messages. On the one hand, on the receiving end side, as shown in FIG. 2 , the method provided by this embodiment includes the following steps:

101. Receive the data message sent by the sender and the checksum of the sender; the checksum of the sender is generated by the sender according to the data message.

The data received by the receiving end consists of two parts, one part is the data message, and the other part is the checksum generated according to the message. The so-called checksum is a value obtained by calculating the data message according to a predetermined check algorithm. Obviously, as long as there is no error or loss during the transmission of the data message, the data message before and after the transmission is calculated according to the same algorithm, and the value calculated before the transmission should be the same as the value calculated after the transmission.

102. Generate a receiving end checksum according to the received data packet.

103. When it is judged that the checksum of the sending end is the same as the checksum of the receiving end, deliver the data message to the transmission control layer of the receiving end.

Wherein, after receiving the data message, the transmission control layer at the receiving end generates a transmission control layer confirmation message and sends it to the lower layer.

When the checksum at the sending end described in step 103 is the same as the checksum at the receiving end, it can be determined that there is no error or loss during the transmission of the data message.

104. Return a data reception confirmation to the sender; so that after receiving the data reception confirmation, the sender constructs a transmission control layer confirmation message of the sender and sends the transmission control layer confirmation message of the sender to the transmission control layer of the sender.

The returning data receipt confirmation in step 104 is an operation performed after checking the data message according to the checksum and confirming that the data message is correct.

105. When receiving the transmission control layer confirmation message sent by the transmission control layer of the receiving end, discard the transmission control layer confirmation message.

In the existing application scenario, after the transmission control layer of the receiving end receives the data message from the sending end, it will generate and send a transmission control layer confirmation message to the lower layer, so as to pass the transmission control layer data confirmation back to the sending end, and the sending end receives After the transmission control layer confirms the message, it starts to send subsequent data. In the embodiment of the present invention, after step 104 returns the data reception confirmation to the sending end, it will cause the sending end to send a sending end transmission control layer confirmation message to the transmission control layer of the sending end itself, and the transmission control layer confirmation message format of the sending end is The content is consistent with the transmission control layer confirmation message generated by the transmission control layer of the receiving end. After receiving the transmission control layer confirmation message of the sending end, the transmission control layer of the sending end will execute subsequent data sending actions. In step 105, at the receiving end, the transmission control layer confirmation message sent by the transmission control layer of the receiving end is discarded, and will not be sent back to the sending end.

Through the cooperation of steps 104 and 105, on the one hand, the transmission control layer confirmation message of the receiving end will not be sent to the sending end, and on the other hand, a transmission control layer confirmation message of the sending end can be provided for the transmission control layer of the sending end (the sending end The function of the transmission control layer confirmation message is equivalent to the transmission control layer confirmation message), so that the transmission control layer at the sending end continues to send data.

On the other hand, as shown in FIG. 3, on the side of the sending end, the method provided in this embodiment includes the following steps:

201. Receive a data packet sent by the transmission control layer of the sending end.

After the connection between the sending end and the receiving end is established, the transmission control layer of the sending end processes the data to be sent to generate a data message, and transmits it to the wireless link control layer of the sending end.

202. Generate a sender checksum according to the data packet sent by the transmission control layer of the sender.

After receiving the data message, the wireless link control layer of the sending end sends it to the physical layer of the sending end. The physical layer of the sending end performs check calculation on the received data according to a predetermined check algorithm, and obtains the checksum of the sending end.

203. Send the data packet and the checksum of the sending end to the receiving end.

The physical layer of the sending end sends the data packet and the checksum of the sending end to the physical layer of the receiving end through the air interface.

204. Receive a data reception confirmation returned by the receiving end.

The data reception confirmation is returned by the receiving end to the sending end when the checksum of the sending end is the same as that of the receiving end.

After the physical layer of the receiving end receives the data message and the checksum of the sending end, it first performs check calculation on the data message to obtain the checksum of the receiving end, and then compares the checksum of the sending end with the checksum of the receiving end. Compare, and send the result information of the data packet and the checksum of the sending end to the checksum of the receiving end to the radio link control layer of the receiving end. After receiving the information that the checksum of the sending end is the same as the checksum of the receiving end, the radio link control layer of the receiving end sends a data reception confirmation to the radio link control layer of the sending end. The data reception confirmation passes through the physical layer of the receiving end and the physical layer of the sending end in turn, and finally reaches the radio link control layer of the sending end.

205. Construct a transmission control layer confirmation message at the sending end.

After receiving the data reception confirmation, the radio link control layer at the sending end constructs a transmission control layer confirmation message at the sending end.

In the transmission control protocol, the transmission control layer at the sending end needs to receive the transmission control layer confirmation message sent by the transmission control layer at the receiving end before sending new data. Since the transmission control layer confirmation message sent by the transmission control layer of the receiving end has been discarded in the aforementioned step 105, the sending end will not receive the transmission control layer confirmation message sent by the transmission control layer of the receiving end. In this case, in order to make the transmission control layer of the sender send new data, it is necessary for the sender to construct a transmission control layer confirmation message—that is, the transmission control layer confirmation message of the sender. The format and content of the transmission control layer confirmation message at the sending end are consistent with the format and content of the transmission control layer confirmation message sent by the transmission control layer at the receiving end.

206. Deliver the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end.

The transmission control layer at the sending end continues to send other data messages in sequence after receiving the confirmation message from the transmission control layer at the sending end.

The application scenario in the embodiment of the present invention may be that the network side acts as the sending end to send data packets to the user terminal, and the user terminal acts as the receiving end; or the user terminal acts as the sending end to send data packets to the network side, and the network side acts as the receiving end end.

Embodiments of the present invention provide a method for reducing transmission control layer confirmation messages. On the one hand, the receiving end receives the data message sent by the sending end and the checksum of the sending end; generates the receiving end checksum according to the received data message and; when it is judged that the checksum of the sending end is the same as that of the receiving end, pass the data message to the transmission control layer of the receiving end, and return the data reception confirmation to the sending end; when receiving the transmission control layer sent by the receiving end When the control layer confirms the message, it discards the transmission control layer confirmation message. On the other hand, the sender receives the data message sent by the transmission control layer of the sender; generates the checksum of the sender according to the data message sent by the transmission control layer of the sender; sends the data message and the checksum of the sender to the receiver end; receive the data reception confirmation returned by the receiving end; construct the transmission control layer confirmation message of the sending end; pass the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end. Through the above solution, the problem that the confirmation message sent by the receiving end occupies a large amount of air interface resources and interferes with other communication data is solved.

Example 2

An embodiment of the present invention provides a method for reducing transmission control layer confirmation messages. On the one hand, as shown in FIG. 4, the method provided by this embodiment includes the following steps:

301. The radio link control layer of the sending end receives the data packet sent by the transmission control layer of the sending end.

302. The radio link control layer at the sending end transmits the data packet to the physical layer at the sending end.

303. The physical layer of the sending end generates a checksum of the sending end according to the data packet sent by the transmission control layer of the sending end.

304. Send the data packet and the checksum of the sending end to the receiving end.

305. The physical layer of the receiving end generates the receiving end checksum according to the received data message, and judges whether the sending end checksum is the same as the receiving end checksum, and then compares the data message and the sending end checksum with the receiving end The information of whether the checksums are the same is transmitted to the radio link control layer of the receiving end.

Execute 306 and 310 respectively according to different judgment results.

306. After the radio link control layer at the receiving end receives the data packet and the information that the sending end checksum sent by the physical layer at the receiving end is the same as the receiving end checksum, transfer the data packet to the transmission control layer at the receiving end.

When the checksum of the sending end is the same as that of the receiving end, it indicates that no error or partial loss occurs during the transmission of the data message from the sending end to the receiving end.

307. The radio link control layer at the receiving end returns a data reception confirmation to the radio link control layer at the sending end.

When the wireless link control layer of the receiving end receives the data packet and the sending end checksum sent by the physical layer of the receiving end is the same as the receiving end checksum, in addition to passing the data packet to the transmission control layer of the receiving end, A data reception confirmation is also returned, and the data reception confirmation is finally delivered to the radio link control layer of the sending end.

It should be noted that, in an actual scenario, the order of step 306 and step 307 may be reversed.

In addition, after step 307, the transmission control layer of the receiving end will send a transmission control layer confirmation message to the wireless link control layer of the receiving end after receiving the data message. In the prior art, the transmission control layer confirmation message Will be returned to the transport control layer of the sender. However, in the embodiment of the present invention, the radio link control layer at the receiving end will discard the transmission control layer confirmation message.

308. After receiving the data reception confirmation, the radio link control layer at the sending end constructs a transmission control layer confirmation message at the sending end.

309. The radio link control layer of the sending end sends the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end.

After the transmission control layer at the sending end receives the confirmation message from the transmission control layer at the sending end, it will continue to execute data transmission. The format and content of the transmission control layer confirmation message at the sending end are consistent with the transmission control layer confirmation message generated by the transmission control layer at the receiving end. The control layer confirms the message. Since the transmission control layer acknowledgment message is discarded by the radio link control layer of the receiving end, the radio link control layer of the sending end in step 309 constructs a sending end transmission control layer confirmation message and sends it to the transmission control layer of the sending end, so that the transmission control layer of the sending end The transport control layer continues to perform data transmission.

310. When the radio link control layer of the receiving end receives the information that the checksum of the sending end is different from the checksum of the receiving end sent by the physical layer of the receiving end, discard the data packet.

When the checksum of the sending end is different from the checksum of the receiving end, it indicates that an error or part of the data packet is lost during transmission. When the wireless link layer of the receiver receives the data message, the checksum of the receiver and the checksum of the sender are not the same, the data message is discarded, and the data reception confirmation is not returned to the sender.

311. When the data reception confirmation is not received within the preset waiting time, the transmission control layer at the sending end resends the data message.

When the wireless link layer of the receiver receives the data message, the checksum of the receiver and the checksum of the sender are not the same, the data message is discarded, and the data reception confirmation is not returned to the sender. If the sender cannot receive the data receipt confirmation, it will not construct the transmission control layer confirmation message of the sender. The transmission control layer of the sender will not send new data because it has not received the confirmation message of the transmission control layer of the sender. It is stipulated in the transmission control protocol that if the transmission control layer fails to receive the confirmation message of the transmission control layer after a certain period of time, it will consider the sent data message as lost and resend the data message.

The above steps 301 to 311 will be described in detail below with reference to FIG. 5 as a schematic diagram. The network side is used as the sending end, and the user terminal is used as the receiving end. Execute according to the above steps: 301, the radio link control layer on the network side receives the data message sent by the transmission control layer on the network side; 302, the radio link control layer on the network side transmits the data message to the physical layer on the network side; 303, the physical layer on the network side generates a network side checksum according to the data message sent by the transmission control layer on the network side; 304, sends the data message and the network side checksum to the user terminal; 305, the physical layer of the user terminal Generate the user terminal checksum according to the received data message, and judge whether the network side checksum is the same as the user terminal checksum, and then check whether the data message and the sending end checksum are the same as the receiving end checksum The information is transmitted to the radio link control layer of the receiving end; respectively execute 306 and 310 according to the judgment results; 306, when the radio link control layer of the user terminal receives the data message and the checksum of the sending end sent by the physical layer of the user terminal After checking the same information as the receiving end, transfer the data message to the transmission control layer of the user terminal; 307, the radio link control layer of the user terminal returns a data reception confirmation to the radio link control layer of the network side; 308, After receiving the data reception confirmation, the wireless link control layer on the network side constructs a network-side transmission control layer confirmation message; 309, the network-side wireless link control layer sends the network-side transmission control layer confirmation message to the network-side transmission control layer Control layer; 310, when the radio link control layer of the user terminal receives information that the user terminal checksum sent by the physical layer of the user terminal is different from the network side checksum, discard the data message; 311, when in When the data reception confirmation is not received within the preset waiting time, the transmission control layer on the network side resends the data message.

It should be noted that the radio link control layer at the receiving end judges the correctness of the data through the checksum, and then returns a data reception confirmation. The same checksum indicates that the process of the data message from the wireless link control layer at the sending end, through the physical layer at the sending end, the air interface, and the wireless link control layer at the receiving end is correct. However, it cannot detect whether the data transmission is lost in the process from the transmission control layer of the sending end to the radio link control layer of the sending end. Therefore, it is necessary to detect whether the received data is complete in the radio link control layer of the transmitting end. Further, as shown in FIG. 6, in combination with another aspect of the embodiment of the present invention, the method provided in this embodiment further includes the following steps:

401. The radio link control layer of the sending end receives the data packet sent by the transmission control layer of the sending end.

402. When the data packet sent by the transmission control layer of the sender is missing, construct missing data packet feedback information; the missing data packet feedback information includes information about the missing data packet.

403. Send the missing data message feedback information to the transmission control layer at the sending end, so that the transmission control layer at the sending end sends the missing data message according to the missing data message feedback information.

For example, the feedback process of the missing feedback information of the above 401 to 403 data packets is as follows:

The transmission control layer at the sending end divides the data ABCDEF into three packets of AB, CD, and EF for transmission, and adds sequence numbers 1, 2, and 3 to these three packets respectively. That is, the data in package No. 1 is AB, the data in package No. 2 is CD, and the data in package No. 3 is EF. When packet 2 is lost during transmission from the transmission control layer at the sender to the RLC layer at the sender, the RLC layer at the sender will only receive packets No. 1 and No. 3. The specific process is that after receiving packets No. 1 and No. 3, they are passed to the physical layer of the sender, and the physical layer of the sender generates a checksum of the sender, and sends packets No. 1 and No. 3 and the checksum of the sender to the receiver. end. After receiving the data message at the physical layer of the receiving end, the receiving end checksum is generated. After judgment, the sending end checksum is considered to be the same as the receiving end checksum, and then the data message and the sending end checksum are compared with the receiving end checksum. The same information is sent to the wireless link control layer of the receiving end; the wireless link control layer of the receiving end sends back the data reception confirmation after receiving the data message and the checksum of the sending end and the same information as the checksum of the receiving end. After receiving the data reception confirmation, the radio link control layer at the receiving end starts to construct a transmission control layer confirmation message at the sending end. Since the sequence numbers of the No. 1 packet and the No. 3 packet are not continuous, the transmission control layer confirmation message of the sending end constructed by the radio link control layer of the sending end includes information about the loss of the No. 2 packet. The wireless link control layer of the sending end sends the confirmation message of the transmission control layer of the sending end containing the information about the loss of the No. 2 packet to the transmission control layer of the sending end as the feedback information of missing data packets, and the transmission control layer of the sending end receives the transmission control layer of the sending end. After the control layer confirms the message, it resends the No. 2 packet.

There are two formats of transmission control layer acknowledgment message, that is, common acknowledgment message ACK (Acknowledgment) and selection acknowledgment message SACK (Selection Acknowledgment). To illustrate the difference between the two, the data sent by the transmission control layer at the sending end is ABCDEF, and the data CD is lost during transmission. If the transmission control layer confirmation message received by the transmission control layer at the sending end is ACK, the transmission control layer at the sending end retransmits the data CDEF, that is, resends the lost data and all data packets after the lost data; if the transmission control layer at the sending end receives If the received transmission control layer confirmation message is SACK, the data retransmitted by the transmission control layer at the sending end is CD, that is, only the lost data is sent. In the embodiment of the present invention, in order to better support SACK, it is necessary to notify each other whether each end has the ability to support the SACK function when the connection is established between the sending end and the receiving end, and if so, enable this function, and then execute the various steps.

Optionally, before the method shown in FIG. 4 is executed, first determine whether the user terminal has the ability to reduce transmission control into confirmation messages, and when the user terminal has the ability to reduce transmission control into confirmation messages, enable the user terminal to enable the ability. Specifically, when the receiving end is a user terminal and the sending end is a network side, the user terminal needs to have the ability to discard the transmission control layer confirmation message generated by its own radio link control layer. The following will be described in conjunction with FIG. 13 .

1301. The user terminal receives a reduced transmission control layer confirmation packet capability query message sent by the network side.

1302. The user terminal sends reduced transmission control layer confirmation packet capability information to the network side.

After receiving the reduced transmission control layer acknowledgment message capability information, the network side can determine whether the user terminal has the ability to discard the transmission control layer acknowledgment message generated by its own radio link control layer. In a specific application, the capability information of the reduced transmission control layer confirmation message can define a field or a bit, and the value of the field or bit is different to indicate whether the user terminal has the transmission control layer generated by the radio link control layer that discards itself. Ability to acknowledge packets.

Step 1301 is an optional step. When there is step 1301, the network side initiates a capability query for the user terminal; when there is no step 1301 but only step 1302, the user terminal actively reports capability information to the network side.

In addition, optionally, after step 1302, there is also step 1303.

1303. The user terminal receives the reduced transmission control layer confirmation packet start message sent by the network side.

After receiving the start message of reducing the transmission control layer acknowledgment message, the user terminal starts the function of reducing the transmission control layer acknowledgment message.

Step 1303 is optional. In addition to receiving commands from the network side, the user terminal can also enable the function of reducing transmission control layer confirmation messages by itself.

Embodiments of the present invention provide a method for reducing transmission control layer confirmation messages. On the one hand, the receiving end receives the data message sent by the sending end and the checksum of the sending end; generates the receiving end checksum according to the received data message and; when it is judged that the checksum of the sending end is the same as the checksum of the receiving end, the data message is passed to the transmission control layer of the receiving end; When the transmission control layer confirmation message is sent by the transmission control layer at the receiving end, the transmission control layer confirmation message is discarded. On the other hand, receive the data message sent by the transmission control layer of the sending end; generate the sending end checksum according to the data message sent by the transmission control layer of the sending end; send the data message and the sending end checksum to the receiving end; When the data reception confirmation is not received within the preset waiting time, the transmission control layer at the sending end resends the data message; when the data message sent by the transmission control layer at the sending end is leaked, construct the missing feedback information of the data message. Through the above solution, the problem that the confirmation message sent by the receiving end occupies a large amount of air interface resources and interferes with other communication data is solved.

Example 3

An embodiment of the present invention provides a receiving end and a sending end. On the one hand, as shown in FIG. 7, the receiving end provided in this embodiment includes:

The receiving unit 61 is configured to receive the data packet and the checksum of the sender sent by the sender; the checksum of the sender is generated by the sender according to the data packet.

The checksum generating unit 62 is configured to generate a receiving end checksum according to the data packet received by the receiving unit 61 .

The receiving end transfer unit 63 is configured to transfer the data message to the transmission control layer of the receiving end when judging that the sending end checksum is the same as the receiving end checksum generated by the checksum generating unit 62 . Wherein, after receiving the data message, the transmission control layer at the receiving end sends a transmission control layer confirmation message.

The data confirmation sending unit 64 is used to return the data reception confirmation to the sending end; after the sending end receives the data receiving confirmation, constructs the sending end transmission control layer confirmation message and sends the sending end transmission control layer confirmation message to the sending end transport control layer.

The confirmation packet discarding unit 65 is configured to discard the transmission control layer confirmation packet when receiving the transmission control layer confirmation packet sent by the transmission control layer of the receiving end.

Further, in combination with an aspect of this embodiment, as shown in FIG. 8a, the receiving end further includes:

The data message discarding unit 66 is configured to discard the data message when it is judged that the checksum of the sending end is different from the checksum of the receiving end generated by the checksum generating unit 62 .

In addition, when the receiving end is the user terminal and the sending end is the network side, the network side needs to determine in advance whether the user terminal has the ability to reduce transmission control layer confirmation messages. As shown in Figure 8b, the receiving end also includes:

The capability information sending unit 67 is used to send the reduced transmission control layer confirmation message capability information to the network side before the receiving unit 61 receives the data message sent by the sending end and the sending end checksum, so that the network side can reduce the transmission control layer according to the reduced transmission control layer Acknowledgment message capability information, to determine that the user terminal has the ability to reduce transmission control into a confirmation message.

Further, the receiving unit 61 is also configured to receive a reduced transmission control layer confirmation message capability query message sent by the network side before the capability information sending unit 67 sends the reduced transmission control layer confirmation message capability information to the network side.

Further, the receiving unit 61 is also configured to, after the capability information sending unit 67 sends the reduced transmission control layer confirmation message capability information to the network side, receive the reduced transmission control layer confirmation message start message sent by the network side, so as to start the reduced transmission The function of the control layer to confirm the message.

The receiving unit 61 and the checksum generating unit 62 in the device described in Fig. 7 and Fig. 8a work at the physical layer of the receiving end; the receiving end transfer unit 63, the data confirmation sending unit 64, the confirmation message discarding unit 65, and the data message The discarding unit 66 works at the radio link control layer of the receiving end.

On the other hand, as shown in Figure 9a, the sending end provided by this embodiment includes:

The data message receiving unit 71 is configured to receive the data message sent by the transmission control layer of the sending end.

The checksum generation unit 72 is configured to generate a sender checksum according to the data message sent by the transmission control layer received by the data message receiving unit 71 .

The sending unit 73 is used to send the data message and the checksum of the sending end to the receiving end, so that the receiving end generates the checksum of the receiving end according to the received data message, and when it is judged that the checksum of the sending end is the same as the checking sum of the receiving end When the checksum is the same, send a data reception confirmation to the sender.

The data confirmation receiving unit 74 is configured to receive the data reception confirmation returned by the receiving end; the data reception confirmation is returned by the receiving end to the sending end when the checksum of the sending end is the same as the checksum of the receiving end.

A confirmation message construction unit 75, configured to construct a transmission control layer confirmation message at the sending end;

The acknowledgment message delivery unit 76 is configured to deliver the acknowledgment message of the transmission control layer of the sending end constructed by the acknowledgment message construction unit 75 to the transmission control layer of the sending end.

The sending unit 73 is further configured to continue to send other data messages in sequence after the confirmation message delivery unit 76 delivers the confirmation message of the transmission control layer of the sending end to the transmission control layer of the sending end.

Further, the confirmation message construction unit 75 is also used for: when the data message sent by the transmission control layer of the sending end is leaked, constructing the missing feedback information of the data message; the missing data message is included in the data message missing feedback information text information.

The confirmation message transfer unit 76 is also configured to send the missing data message feedback information to the transmission control layer of the sending end, so that the transmission control layer of the sending end sends the missing data message according to the missing data message feedback information.

In addition, when the receiving end is the user terminal and the sending end is the network side, the network side needs to determine in advance whether the user terminal has the ability to reduce transmission control layer confirmation messages. As shown in Figure 9b, the sending end also includes:

The capability information receiving unit 77 is configured to receive the reduced transmission control layer confirmation message capability information sent by the user terminal, so that the network side can determine that the user terminal has the reduced transmission control layer confirmation message capability information according to the reduced transmission control layer confirmation message capability information. ability.

Further, the sending unit 73 is also configured to send a reduced transmission control layer confirmation message capability query message to the user terminal before the capability information receiving unit 77 receives the reduced transmission control layer confirmation message capability information sent by the user terminal.

Further, the sending unit 73 is also configured to, after the capability information receiving unit 77 receives the reduced transmission control layer confirmation message capability information sent by the user terminal, send a reduced transmission control layer confirmation message start message to the user terminal, so that the user terminal starts Reduce the function of transmitting control layer confirmation messages.

In the sending end described in Fig. 9a, the data message receiving unit 71, the confirmation message construction unit 75, and the confirmation message transfer unit 76 work at the wireless link control layer of the sending end; the checksum generation unit 72, the sending unit 73 , the data confirmation receiving unit 74 works on the physical layer of the sending end.

Embodiments of the present invention provide a sending end and a receiving end. On the one hand, the receiving end receives the data message sent by the sending end and the sending end checksum; generates the receiving end checksum according to the received data message; when judging When the checksum of the sending end is the same as that of the receiving end, the data message is passed to the transmission control layer of the receiving end; the data reception confirmation is returned to the sending end; when the transmission control layer confirmation message sent by the transmission control layer of the receiving end is received , the transmission control layer confirmation message is discarded. On the other hand, the sender receives the data message sent by the transmission control layer of the sender; generates the checksum of the sender according to the data message sent by the transmission control layer of the sender; sends the data message and the checksum of the sender to the receiver Receive the data reception confirmation returned by the receiving end; construct the transmission control layer confirmation message of the sending end; pass the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end. Through the above solution, the problem that the confirmation message sent by the receiving end occupies a large amount of air interface resources and interferes with other communication data is solved.

Example 4

An embodiment of the present invention provides a receiving end and a sending end. On the one hand, as shown in FIG. 10, the receiving end provided in this embodiment includes:

The receiver 81 is configured to receive the data message sent by the sender and the checksum of the sender; the checksum of the sender is generated by the sender according to the data message.

The processor 82 is configured to generate a receiving end checksum according to the received data message, and when the sending end checksum is the same as the receiving end checksum, transfer the data message to the transmission control layer of the receiving end; wherein, receiving After the transmission control layer at the receiving end receives the data message, it sends a transmission control layer confirmation message; the processor 82 is also used to send the transmission control layer confirmation message at the receiving end when receiving the transmission control layer confirmation message sent by the transmission control layer at the receiving end. The message is discarded, thereby reducing the number of confirmation messages in the transmission control layer.

Transmitter 83 is used to return the data reception confirmation to the transmission terminal when the transmission terminal checksum is the same as the reception terminal checksum; so that after the transmission terminal receives the data reception confirmation, it constructs the transmission control layer confirmation message of the transmission terminal and Send the transmission control layer acknowledgment message of the sending end to the transmission control layer of the sending end.

Further, the processor 82 is further configured to discard the data packet when the checksum of the sending end is different from the checksum of the receiving end.

In addition, when the receiving end is a user terminal and the sending end is a network side, the transmitter 83 in the receiving end is also used for:

Before the receiver 81 receives the data message sent by the sender and the checksum of the sender, it sends the reduced transmission control layer confirmation message capability information to the network side, so that the network side determines according to the reduced transmission control layer confirmation message capability information The user terminal has the ability to reduce transmission control into confirmation messages.

The receiver 81 is also configured to, before the sender 83 sends the reduced transmission control layer confirmation message capability information to the network side, receive the reduced transmission control layer confirmation message capability query message sent by the network side.

The receiver 81 is also used to, after the transmitter 83 sends the reduced transmission control layer confirmation message capability information to the network side, receive the reduced transmission control layer confirmation message start message sent by the network side, so as to start the reduced transmission control layer confirmation message function.

On the other hand, as shown in Figure 11, the sending end provided by this embodiment includes:

The processor 91 is configured to receive a data message sent by the transmission control layer of the sender; and generate a checksum of the sender according to the data message sent by the transmission control layer of the sender.

The transmitter 92 is used to send the data message and the checksum of the sending end to the receiving end, so that the receiving end generates the checksum of the receiving end according to the received data message, and when it is judged that the checksum of the sending end is the same as the checking sum of the receiving end When the checksum is the same, send a data reception confirmation to the sender.

The receiver 93 is configured to receive the data reception confirmation returned by the receiving end.

Further, the processor 91 is further configured to construct a transmission control layer acknowledgment message of the sender, and deliver the acknowledgment message of the transmission control layer of the sender to the transmission control layer of the sender.

Further, the sender 92 is also configured to continue to send other data packets in sequence after the processor 91 passes the confirmation message of the transmission control layer of the sending end to the transmission control layer of the sending end.

Further, the transmitter 92 is also configured to resend the data packet when no data reception confirmation is received within the preset waiting time.

Further, the processor 91 is also configured to construct missing data message feedback information when the data message sent by the transmission control layer of the sending end is leaked; the data message missing feedback information includes the missing data message information. And sending the missing data message feedback information to the transmission control layer of the sending end, so that the transmission control layer of the sending end sends the missing data message according to the missing data message feedback information.

In addition, when the receiving end is the user terminal and the sending end is the network side, the receiver 93 is also used to: receive the reduced transmission control layer confirmation message capability information sent by the user terminal, so that the network side can confirm the message according to the reduced transmission control layer Capability information, to determine that the user terminal has the capability of reducing transmission control layer confirmation messages.

Further, the transmitter 92 is also configured to send a reduced transmission control layer confirmation message capability query message to the user terminal before the receiver 93 receives the reduced transmission control layer confirmation message capability information sent by the user terminal.

The transmitter 92 is also configured to, after the receiver 93 receives the reduced transmission control layer acknowledgment message capability information sent by the user terminal, send a reduced transmission control layer acknowledgment message start message to the user terminal, so that the user terminal enables the reduced transmission control layer acknowledgment function of the message.

Embodiments of the present invention provide a receiving end and a sending end. On the one hand, the receiving end receives the data message sent by the sending end and the sending end checksum; generates the receiving end checksum according to the received data message; when judging When the checksum of the sending end is the same as that of the receiving end, the data message is passed to the transmission control layer of the receiving end; the data reception confirmation is returned to the sending end; when the transmission control layer confirmation message sent by the transmission control layer of the receiving end is received , the transmission control layer confirmation message is discarded. On the other hand, the sender receives the data message sent by the transmission control layer of the sender; generates the checksum of the sender according to the data message sent by the transmission control layer of the sender; sends the data message and the checksum of the sender to the receiver ; Receive the data reception confirmation returned by the receiving end; construct the transmission control layer confirmation message of the sending end; pass the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end. Through the above solution, the problem that the confirmation message sent by the receiving end occupies a large amount of air interface resources and interferes with other communication data is solved.

Further, the embodiment of the present invention provides a system for reducing transmission control layer confirmation messages. As shown in Figure 12, the system includes: a sending end 1001, a receiving end 1002 and an air interface 1003; wherein:

The sending end 1001 is the sending end shown in FIG. 11 in Embodiment 4 of the present invention.

The receiving end 1002 is the receiving end shown in FIG. 10 in Embodiment 4 of the present invention.

The air interface is used to connect the sender and receiver.

Embodiments of the present invention provide a system for reducing transmission control layer confirmation messages. On the one hand, the receiving end receives the data message sent by the sending end and the checksum of the sending end; generates the receiving end checksum according to the received data message and; when it is judged that the checksum of the sending end is the same as that of the receiving end, the data message is delivered to the transmission control layer of the receiving end; the data reception confirmation is returned to the sending end; when the transmission control layer of the receiving end is received When the transmission control layer confirms the message, the transmission control layer confirmation message is discarded. On the other hand, the sender receives the data message sent by the transmission control layer of the sender; generates the checksum of the sender according to the data message sent by the transmission control layer of the sender; sends the data message and the checksum of the sender to the receiver Receive the data reception confirmation returned by the receiving end; construct the transmission control layer confirmation message of the sending end; pass the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end. The sender and receiver are connected through the air interface. Through the above solution, the problem that the confirmation message sent by the receiving end occupies a large amount of air interface resources and interferes with other communication data is solved.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus necessary general-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. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (37)

1. A method for reducing transmission control layer acknowledgment messages, characterized in that, comprising: receiving the data message sent by the sender and the checksum of the sender; the checksum of the sender is generated by the sender according to the data message; Generate a checksum at the receiving end according to the received data message; When it is judged that the checksum of the sending end is the same as the checksum of the receiving end, the data message is delivered to the transmission control layer of the receiving end; wherein, after receiving the data message, the transmission control layer of the receiving end , send a transmission control layer confirmation message; and, when it is judged that the checksum of the sending end is the same as the checksum of the receiving end, send a data reception confirmation to the sending end, so that the sending end can receive the After the data is received and confirmed, construct the transmission control layer confirmation message of the sending end and send the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end; When the transmission control layer confirmation message sent by the transmission control layer of the receiving end is received, the transmission control layer confirmation message is discarded. 2. The method according to claim 1, characterized in that the method further comprises: When it is judged that the checksum of the sending end is different from the checksum of the receiving end, the data packet is discarded. 3. The method according to claim 1, wherein when the receiving end is a user terminal and the sending end is a network side, before receiving the data message sent by the sending end and the checksum of the sending end, The method also includes: The user terminal sends reduced transmission control layer acknowledgment message capability information to the network side, so that the network side determines that the user terminal has the ability to reduce the transmission control layer according to the reduced transmission control layer acknowledgment message capability information. Ability to acknowledge packets. 4. The method according to claim 3, characterized in that, before sending the reduced transmission control layer confirmation message capability information to the network side, the method further comprises: The user terminal receives the reduced transmission control layer confirmation message capability query message sent by the network side. 5. The method according to claim 3 or 4, wherein, after sending the reduced transmission control layer confirmation message capability information to the network side, the method further comprises: receiving the start message of reducing transmission control layer acknowledgment messages sent by the network side, so as to enable the function of reducing transmission control layer acknowledgment messages. 6. A method for reducing transmission control layer acknowledgment messages, characterized in that, comprising: Receive the data message sent by the transmission control layer of the sending end; generating a sending end checksum according to the data message sent by the transmission control layer of the sending end; Send the data message and the checksum of the sending end to the receiving end, so that the receiving end generates a checksum of the receiving end according to the received data message, and when judging the checksum of the sending end When the checksum of the receiving end is the same, sending a data reception confirmation to the sending end; receiving the data reception acknowledgment returned by the receiving end; the data receiving acknowledgment is returned to the sending end by the receiving end when the checksum of the sending end is the same as the checksum of the receiving end; After receiving the data reception confirmation, constructing a transmission control layer confirmation message at the sending end; passing the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end. 7. The method according to claim 6, further comprising: after passing the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end, the transmission control layer of the sending end Continue to send other datagrams in sequence. 8. The method according to claim 6, characterized in that, after sending the data message and the sender checksum to the receiver, the method further comprises: When the data reception acknowledgment is not received within the preset waiting time, the transmission control layer at the sending end resends the data message. 9. The method according to claim 6, characterized in that, after receiving the data message sent by the transmission control layer of the sending end, further comprising: When the data message sent by the transmission control layer of the sending end is leaked, the data message missing feedback information is constructed; the data message missing feedback information includes the information of the missing data message; Sending the missing data message feedback information to the transmission control layer of the sending end, so that the transmission control layer of the sending end sends the missing data message according to the missing data message feedback information. 10. The method according to claim 6, wherein when the receiving end is a user terminal and the sending end is a network side, before receiving the data message sent by the transmission control layer of the sending end, the method Also includes: The network side receives the reduced transmission control layer acknowledgment message capability information sent by the user terminal, so that the network side determines that the user terminal has the ability to reduce the transmission control layer according to the reduced transmission control layer acknowledgment message capability information. The ability of the layer to confirm the message. 11. The method according to claim 10, wherein before receiving the reduced transmission control layer confirmation message capability information sent by the user terminal, the method further comprises: Sending a reduced transmission control layer confirmation message capability query message to the user terminal. 12. The method according to claim 10 or 11, wherein after receiving the reduced transmission control layer confirmation message capability information sent by the user terminal, the method further comprises: Sending the start message of reducing transmission control layer acknowledgment messages to the user terminal, so that the user terminal enables the function of reducing transmission control layer acknowledgment messages. 13. A receiving end, characterized in that, comprising: The receiving unit is used to receive the data message sent by the sending end and the checksum of the sending end; the checksum of the sending end is generated by the sending end according to the data message; a checksum generating unit, configured to generate a receiving end checksum according to the data message received by the receiving unit; The receiving end transfer unit is used to transfer the data message to the transmission control layer of the receiving end when judging that the sending end checksum is the same as the receiving end checksum generated by the checksum generating unit; wherein, After receiving the data message, the transmission control layer at the receiving end sends a transmission control layer confirmation message; A data confirmation sending unit, configured to return a data reception acknowledgment to the sending end when it is judged that the sending end checksum is the same as the receiving end checksum generated by the checksum generating unit; so that the sending end After receiving the data reception confirmation, constructing a transmission control layer confirmation message of the sending end and sending the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end; A confirmation message discarding unit, configured to discard the transmission control layer confirmation message when receiving the transmission control layer confirmation message sent by the transmission control layer of the receiving end. 14. The receiving end according to claim 13, characterized in that, the receiving end further comprises: A data message discarding unit, configured to discard the data message when it is judged that the checksum of the sending end is different from the checksum of the receiving end generated by the checksum generation unit. 15. The receiving end according to claim 13, wherein when the receiving end is a user terminal and the sending end is a network side, the receiving end further comprises: A capability information sending unit, configured to send the reduced transmission control layer confirmation message capability information to the network side before the receiving unit receives the data message sent by the sender and the checksum of the sender, so that the network side according to The reducing transmission control layer confirmation message capability information determines that the user terminal has the capability of reducing the transmission control confirmation message. 16. The receiving terminal according to claim 15, wherein the receiving unit is further configured to, before the capability information sending unit sends the reduced transmission control layer confirmation message capability information to the network side, receives the The reduced transmission control layer confirmation message capability query message sent by the network side is described above. 17. The receiving end according to claim 15 or 16, wherein the receiving unit is further configured to, after the capability information sending unit sends the reduced transmission control layer confirmation message capability information to the network side, receiving the start message of reducing transmission control layer acknowledgment messages sent by the network side, so as to enable the function of reducing transmission control layer acknowledgment messages. 18. A sending end, characterized in that, comprising: The data message receiving unit is used to receive the data message sent by the transmission control layer of the sending end; A checksum generation unit, configured to generate a sender checksum according to the data message sent by the transmission control layer received by the data message receiving unit; a sending unit, configured to send the data message and the checksum of the sending end to the receiving end, so that the receiving end generates a receiving end checksum according to the received data message, and when judging the When the checksum of the sending end is the same as the checksum of the receiving end, sending a data reception confirmation to the sending end; A data confirmation receiving unit, configured to receive a data reception confirmation returned by the receiving end; the data receiving confirmation is returned to the sending end by the receiving end when the checksum of the sending end is the same as the checksum of the receiving end ; A confirmation message construction unit, configured to construct a transmission control layer confirmation message at the sending end after the data confirmation unit receives the data reception confirmation; An acknowledgment message delivery unit, configured to deliver the acknowledgment message of the transmission control layer of the sending end constructed by the acknowledgment message construction unit to the transmission control layer of the sending end. 19. The sending end according to claim 18, wherein the sending unit is further configured to transfer the transmission control layer confirmation message of the sending end to the transmission of the sending end at the confirmation message delivery unit After the control layer, continue to send other data packets in sequence. 20. The sending end according to claim 18, wherein the transmission control layer of the sending end is further configured to resend the datagram when the data receipt confirmation is not received within the preset waiting time arts. 21. The sending end according to claim 18, wherein the confirmation message construction unit is further configured to construct a missing data message when the data message sent by the transmission control layer of the sending end is leaked Feedback information; the missing data message feedback information includes the information of the missing data message; The acknowledgment message transfer unit is further configured to send the missing data message feedback information to the transmission control layer of the sending end, so that the transmission control layer of the sending end sends the data message missing feedback information according to the Missed data packets. 22. The sending end according to claim 18, wherein when the receiving end is a user terminal and the sending end is a network side, the sending end further comprises: The capability information receiving unit is configured to receive the capability information of the reduced transmission control layer confirmation message sent by the user terminal, so that the network side can determine that the user terminal has the capability of the reduced transmission control layer confirmation message according to the capability information of the reduced transmission control layer confirmation message. Describes the ability of the transport control layer to acknowledge messages. 23. The sending end according to claim 22, wherein the sending unit is further configured to, before the capability information receiving unit receives the reduced transmission control layer confirmation message capability information sent by the user terminal, send The user terminal sends a reduced transmission control layer confirmation message capability query message. 24. The sending end according to claim 22 or 23, wherein the sending unit is further configured to, after the capability information receiving unit receives the reduced transmission control layer confirmation message capability information sent by the user terminal , sending a message to start reducing transmission control layer acknowledgment messages to the user terminal, so that the user terminal enables the function of reducing transmission control layer acknowledgment messages. 25. A receiving end, characterized in that it comprises: The receiver is configured to receive the data message sent by the sending end and the checksum of the sending end; the checksum of the sending end is generated by the sending end according to the data message; A processor, configured to generate a receiving end checksum according to the received data message, and when the sending end checksum is the same as the receiving end checksum, transfer the data message to the receiving end's checksum Transmission control layer; wherein, after receiving the data message, the transmission control layer of the receiving end sends a transmission control layer confirmation message; the processor is also used for receiving the transmission control layer sent by the transmission control layer of the receiving end When confirming the message, discarding the transmission control layer confirmation message; a sender, configured to return a data reception confirmation to the sending terminal when the checksum of the sending terminal is the same as the checksum of the receiving terminal; so that the transmitting terminal constructs a sending terminal after receiving the data receiving confirmation; The transmission control layer of the sending end confirms the message and sends the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end. 26. The receiving end according to claim 25, wherein the processor is further configured to discard the data message when the sending end checksum is different from the receiving end checksum . 27. The receiving end according to claim 25, wherein when the receiving end is a user terminal and the sending end is a network side, the transmitter is further used for: Before the receiver receives the data message sent by the sender and the checksum of the sender, send the reduced transmission control layer confirmation message capability information to the network side, so that the network side can confirm according to the reduced transmission control layer Message capability information, determining that the user terminal has the capability of reducing the transmission control into a confirmation message. 28. The receiver according to claim 27, wherein the receiver is further configured to, before the sender sends the reduced transmission control layer acknowledgment message capability information to the network side, receives the network The reduced transmission control layer confirmation message capability query message sent by the side. 29. The receiving end according to claim 27 or 28, wherein the receiver is further configured to, after the sender sends the reduced transmission control layer acknowledgment message capability information to the network side, receive the The start message of reducing the transmission control layer acknowledgment message sent by the network side is described above, so as to enable the function of reducing the transmission control layer acknowledgment message. 30. A sending end, characterized in that, comprising: A processor, configured to receive a data message sent by the transmission control layer of the sending end; generate a sending end checksum according to the data message sent by the transmission control layer of the sending end; a transmitter, configured to send the data message and the checksum of the sending end to the receiving end, so that the receiving end generates a receiving end checksum according to the received data message, and when judging the When the checksum of the sending end is the same as the checksum of the receiving end, sending a data reception confirmation to the sending end; a receiver, configured to receive a data reception confirmation returned by the receiving end; The processor is further configured to construct a transmission control layer confirmation message of the sending end after the receiver receives the data reception confirmation; and pass the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end layer. 31. The sender according to claim 30, wherein the sender is further configured to, after the processor passes the transmission control layer confirmation message of the sender to the transmission control layer of the sender , and continue to send other data packets in sequence. 32. The sending end according to claim 30, wherein the sender is further configured to resend the data packet when the data reception confirmation is not received within a preset waiting time. 33. The sending end according to claim 30, wherein the processor is also used for: When the data message sent by the transmission control layer of the sending end is leaked, the data message missing feedback information is constructed; the data message missing feedback information includes the information of the missing data message; Sending the missing data message feedback information to the transmission control layer of the sending end, so that the transmission control layer of the sending end sends the missing data message according to the missing data message feedback information. 34. The sending end according to claim 30, wherein when the receiving end is a user terminal and the sending end is a network side, the receiver is further used for: receiving the reduced transmission control layer confirmation message capability information sent by the user terminal, so that the network side determines that the user terminal has the ability to reduce the transmission control layer confirmation message according to the reduced transmission control layer confirmation message capability information Ability. 35. The transmitter according to claim 34, wherein the transmitter is further configured to, before the receiver receives the reduced transmission control layer confirmation message capability information sent by the user terminal, send the The user terminal sends a reduced transmission control layer confirmation message capability query message. 36. The transmitter according to claim 34 or 35, wherein the transmitter is further configured to, after the receiver receives the reduced transmission control layer confirmation message capability information sent by the user terminal, send The user terminal sends a start message for reducing transmission control layer confirmation messages, so that the user terminal enables the function of reducing transmission control layer confirmation messages. 37. A system for reducing transmission control layer acknowledgment messages, comprising: a sending end, a receiving end, and an air interface; wherein: The sending end comprises any sending end described in claims 18 to 24; The receiving end comprises any receiving end described in claims 13 to 15; The air interface is used to connect the sending end and the receiving end; the air interface is an interface provided for wireless connection between the sending end and the receiving end.