JP6805365B2 - Adaptive transmission method and equipment - Google Patents

Description

The embodiments of the present application relate to the field of data transmission technology, and particularly to adaptive transmission methods and devices.

The low-latency Internet transfer protocol based on the transfer control protocol (Transfer Control Protocol, TCP) and the user datagram protocol (User Datagram Protocol, UDP) (QUIC UDP Internet Connection, QUIC) is a reliable connection-oriented transport layer communication. It is a protocol. When transmitting data packets to ensure that no packet loss occurs, the transmitting end assigns a sequence number to each data packet and the receiving end responds to the data packet received without any problems. A response signal (Acknowledgement, ACK) is returned. For TCP-based services or QUIC-based services, the service rate is determined based on both the downlink data transmission rate and the uplink acknowledgment transmission rate.

In wireless networks, downlink transmission rates are usually relatively high, and uplink transmission is a bottleneck. Therefore, in existing solutions, the downlink throughput may be relatively low due to the limited uplink transmission rate.

In order to solve the problem of the prior art that the downlink throughput is low due to the low uplink transmission rate, embodiments of the present invention provide adaptive transmission methods and devices. The technical solution is as follows.

According to the first aspect, an adaptive transmission method is provided, which method may be applied to a terminal or a network side device.

The method comprises acquiring a first uplink transmission rate available to the terminal and a second uplink transmission rate required for the transmission of the service. If the first uplink transmission rate is less than the second uplink transmission rate, it indicates that the requirements cannot be met in the uplink. In this case, an adaptive transmission policy is determined and the data may be transmitted to the peer end according to the adaptive transmission policy. The adaptive transmission policy is used to instruct the terminal to reduce the size of the uplink affirmative response data packet transmitted within a unit period, so that the service uplink affirmative response data packet is the first uplink. When transmitted at a rate below the transmission rate, the service downlink data packet can be transmitted at a rate above the downlink transmission rate.

The adaptive transmission policy is determined when the first uplink transmission rate is smaller than the second uplink transmission rate, and the data is transmitted to the peer end by the adaptive transmission policy, so that the uplink transmission rate in the related technology is relatively high. The low downlink throughput problem has been resolved, and by reducing the size of the uplink affirmative response data packets, the time spent sending the uplink affirmative response data packets that need to be sent is resolved. Can be reduced. Thereby, normal uplink transmission is guaranteed when the first uplink transmission rate is relatively low, and downlink throughput is improved.

In the first possible implementation, the step of acquiring the first uplink transmission rate is the step of the terminal acquiring the uplink rate calculation parameter and the uplink rate calculation parameter when the method is applied to the terminal. It may include a step of determining a first uplink transmission rate based on it, or if the method is applied to a network side device, a step of receiving a first uplink transmission rate transmitted by a terminal. The first uplink transmission rate transmitted by the terminal is a rate calculated and transmitted by the terminal based on the uplink rate calculation parameters. The uplink rate calculation parameters are the terminal's past uplink transmission rate, the terminal's channel quality information, the terminal's service information, the terminal's Quality of Service (QoS) information, and the uplink transmitted by the network-side device. Includes at least one of the available transmission rates. The past uplink transmission rate is the uplink transmission rate previously supported by the terminal.

In the second possible implementation, the steps of acquiring the second uplink transmission rate are the step of acquiring the downlink transmission rate and the step of calculating the second uplink transmission rate based on the downlink transmission rate. May include.

The step of acquiring the downlink transmission rate may include the following implementation example. In the first implementation, if the method is applied to a terminal, the downlink transmission rate transmitted by the network-side device is received, or the downlink rate calculation parameter transmitted by the network-side device is received. The downlink transmission rate is calculated based on the downlink rate calculation parameters. In the second implementation, if the method is applied to network-side devices, the downlink transmission rate is calculated based on the downlink rate calculation parameters.

During the actual implementation, the service request of the terminal is further acquired and the second uplink transmission rate may be calculated based on the downlink transmission rate and the service request. The service request may include at least one of service type and service context information.

The stage of acquiring the service request of the terminal is the stage of acquiring the service request directly by the terminal when the method is applied to the terminal, or the stage of acquiring the service request transmitted by the terminal when the method is applied to the network side device. It may include a step of receiving by the side device.

In the third possible implementation, the step of determining the adaptive transmission policy may include at least one of the following three possible implementations.

In the first possible implementation, the target data packet format of the uplink acknowledgment data packet is determined. The size of the uplink acknowledgment data packet in the target data packet format is smaller than the size of the uplink acknowledgment data packet in the initial data packet format. The time when the target data packet format is determined is the first time point, and the initial data packet format is the data packet format used when the uplink acknowledgment data packet needs to be transmitted at the first time point. ..

In the second possible implementation, the opportunity to send the uplink acknowledgment data packet is determined. The transmission opportunity is to return the uplink acknowledgment data packet after receiving M downlink data packets, where M is an integer greater than N and the time when the transmission opportunity is determined is the second time. Yes, N is the number of downlink data packets received if the uplink acknowledgment data packets need to be transmitted at a second point in time.

In a third possible implementation, if the network-side device does not enable a forward error correction (FEC) mechanism for downlink data transmission, a first instructional information is generated or downlink. The first size of the FEC group for data transmission is calculated. The first instruction information is used to instruct the FEC mechanism for downlink data transmission to be enabled, and when the network side device enables FEC for downlink data transmission, the FEC group for downlink data transmission A second size is calculated. The second size is smaller than the original size of the FEC group, and the original size is the size of the FEC group used in the FEC mechanism for downlink data transmission enabled by the network side device.

By determining the target data packet format, the size of the encapsulated uplink affirmative response data packet becomes smaller than the size of the encapsulated data packet in the initial data packet format. Therefore, the amount of data that needs to be uploaded by the terminal is reduced, and it is still guaranteed that the uplink and downlink rates will match if the first uplink transmission rate is less than the second uplink transmission rate. Can be done. This guarantees downlink transmission throughput.

By determining the transmission opportunity, after the M downlink data packets are received, the uplink acknowledgment data packets are transmitted to the network side device. Therefore, the number of uplink acknowledgment data packets that need to be transmitted is reduced. In other words, the uplink rate and the downlink rate are guaranteed to match, which guarantees the downlink transmission throughput.

If the network-side device does not enable the FEC mechanism for downlink data transmission, a first instruction information is generated or a first size is calculated. Thereby, by guaranteeing the accuracy of the downlink data packets received by the terminal, the number of uplink acknowledgment data packets that need to be uploaded is reduced, and the downlink transmission throughput is guaranteed. Similarly, if the network-side device has enabled the FEC mechanism for downlink data transmission, a second size of FEC group for downlink data transmission is calculated. Thereby, by guaranteeing the accuracy of the downlink data packets received by the terminal, the number of uplink acknowledgment data packets that need to be uploaded is reduced, and the downlink transmission throughput is guaranteed.

In the method described above, the step of determining the target data packet format of the uplink affirmative response data packet is the step of calculating the difference between the second uplink transmission rate and the first uplink transmission rate. It may include a step of acquiring the corresponding target data packet format, in which the larger the uplink affirmative response data packet in the target data packet format, the smaller the difference.

The step of determining the transmission opportunity of the uplink affirmative response data packet is the step of calculating the difference between the second uplink transmission rate and the first uplink transmission rate, and the step of obtaining the value of M corresponding to the difference. It may include a step of acquiring, in which the difference becomes larger as the value of M is larger.

The step of calculating the second size of the FEC group for downlink data transmission is the step of calculating the difference between the second uplink transmission rate and the first uplink transmission rate, and the step corresponding to the difference. It may include a step of acquiring the size 2, in which the larger the value of the second size is, the smaller the difference corresponding to the second size is.

In a fourth possible implementation, if the method described above is applied to a terminal, the step of transmitting data to the peer end according to the adaptive transmission policy is that the adaptive transmission policy has a target data packet format for uplink affirmative response data packets. If the stage of sending the uplink affirmative response data packet to the network side device based on the target data packet format, the adaptive transmission policy has the opportunity to send the uplink affirmative response data packet, then the network based on the transmission opportunity. The stage of transmitting the uplink affirmative response data packet to the side device, the stage of transmitting the first instruction information to the network side device when the adaptive transmission policy has the first instruction information, and the first instruction information After receiving, the network side device enables the forward error correction FEC mechanism for downlink data transmission, and the first instruction information is used to instruct to enable the FEC mechanism for downlink data transmission, transmit. If the adaptive transmission policy has a first size, it is the stage of transmitting the first size to the network side device, and after receiving the first size, the network side device is for downlink data transmission. The transmission stage, which enables the FEC mechanism and sends a downlink data packet to the terminal based on the first size, the first size being the size of the pre-generated FEC group for the downlink data transmission. Alternatively, if the adaptive transmission policy has a second size, it is in the stage of transmitting the second size to the network side device, and after receiving the second size, the network side device is based on the second size. The second size includes a transmission step, which is the size of a pre-generated FEC group for downlink data transmission.

When the method is applied to network-side devices, the stage of transmitting data to the peer end according to the adaptive transmission policy is that the adaptive transmission policy is the target data packet format of the uplink affirmative response data packet and / or the uplink affirmative response data packet. The stage of transmitting the target data packet format and / or the transmission opportunity to the terminal and receiving the uplink affirmative response data packet transmitted by the terminal based on the target data packet format and / or the transmission opportunity. If the adaptive transmission policy has a first instruction information, it is a step to enable the FEC mechanism for downlink data transmission, and the first instruction information instructs to enable the FEC mechanism for downlink data transmission. If the enable step, adaptive transmission policy used to enable the FEC mechanism for downlink data transmission is enabled and the downlink data packet is sent to the terminal based on the first size. In the stage of transmission, the first size is the size of the pre-generated FEC group for downlink data transmission, based on the second size if the stage, or adaptive transmission policy has a second size. The second size is the size of the pre-generated FEC group for the downlink data transmission, which is the stage of transmitting the downlink data packet to the terminal.

According to the second aspect, an adaptive transmission device is provided. Adaptive transmission equipment includes a processor and a transmitter connected to the processor. The processor is configured to execute an instruction, and the processor implements the adaptive transmission method of the first aspect by executing the instruction.

According to a third aspect, an adaptive transmission device is provided. The adaptive transmission device comprises at least one unit, the at least one unit being configured to implement the adaptive transmission method provided in the first aspect.

It is the schematic of the mounting environment which concerns on embodiment of this invention.

It is a flowchart of the adaptive transmission method which concerns on embodiment of this invention.

It is the schematic of the possible structure of the uplink acknowledgment data packet in TCP which concerns on embodiment of this invention.

It is a flowchart of the adaptive transmission method which concerns on embodiment of this invention.

It is a schematic structural drawing of the adaptive transmission apparatus which concerns on embodiment of this invention.

It is a schematic structural drawing of the adaptive transmission apparatus which concerns on embodiment of this invention.

The "first", "second", etc. referred to herein do not indicate any order, number, or importance and are only used to distinguish the various components. Similarly, "yes", "one", etc. are not intended to indicate a limited number, but are intended to indicate at least one. “Connections”, “links” and the like are not limited to physical or mechanical connections, but may include electrical connections regardless of direct or indirect links.

A "module" referred to herein is typically a program or instruction stored in memory that can implement some functionality. The "unit" referred to herein is usually a functional structure that is logically divided. A "unit" can be implemented solely by hardware or by a combination of software and hardware.

As used herein, "plurality" means two or more. “And / or” describes the relationship between related objects and indicates that three relationships can exist. For example, A and / or B may represent the following three situations: only A exists, both A and B exist, only B exists. The symbol "/" generally indicates the relationship of "or" between related objects.

FIG. 1 is a schematic view of a mounting environment involved in the adaptive transmission method according to the embodiment of the present invention. As shown in FIG. 1, the mounting environment may include a terminal 110 and a network side device 120.

The terminal 110 is a mobile terminal, such as a mobile phone (or referred to as a "cellular" phone) or a computer having a mobile terminal, such as a portable, pocket-sized, handheld, computer-embedded, or in-vehicle mobile device. You can. It is not limited to this. In another example, the terminal 110 is a subscriber unit (Subscriber Unit), a subscriber station (Subscriber Station), a mobile station (Mobile Station, MS), a mobile console (Mobile), a remote station (Remote Station, RS), access. point (access point, AP), remote terminal (remote terminal), access terminal (access terminal, AT), user terminal (user terminal, UT), user agent (user agent, UA), the terminal (user device), a subscriber It may be a premises device (Customer Premiers Equipment, CPE) or a user device (User Equipment, UE). Optionally, the terminal 110 may be a relay. This embodiment does not limit this.

During the actual implementation, the terminal 110 may establish a wireless connection to the network side device 120 using the wireless air interface and transmit uplink data to the network side device 120 through the wireless connection. The wireless air interface may be a wireless air interface at any frequency based on the 4G and 5G standards. For example, the wireless air interface is a new radio (NR) air interface. Alternatively, the wireless air interface may be a 5G-based wireless air interface based on the next-generation mobile communication network technology standard. Optionally, the wireless air interface may be a Wireless Fidelity (WiFi) air interface.

In addition, for edge users at the cell edge, the network coverage at the cell edge is relatively poor, so the edge user's uplink transmission rate usually cannot meet the downlink transmission requirements. Therefore, the terminal 110 described in the following embodiments may be an edge user at the cell edge. This embodiment does not limit this.

The network-side device 120 may be a radio access network (RAN) device, a core network device, a service server, or any relay device in the service data transmission process. The relay device may be a UE. It is not limited to this. In addition, during the actual implementation, the network-side device 120 may be further subdivided into two logical functional entities, the control plane and the user plane, and the functionality of the network-side device described in the following embodiments is control. It may be implemented by a plane or by a user plane. It is not limited to this.

The data packet exchanged between the terminal 110 and the network side device 120 may be a data packet encapsulated based on the TCP or QUIC protocol. Alternatively, optionally, the data packet exchanged between the terminal 110 and the network-side device 120 may be a data packet encapsulated based on the protocol of another transport layer or application layer. It is a feedback-based protocol. This embodiment does not limit this.

The adaptive transmission method provided in the following embodiments may be applied to the terminal 110 shown in FIG. 1 or to the network side device 120 shown in FIG. These embodiments do not limit this. In the following embodiments, the uplink means the route from the terminal to the network side device, and the downlink means the route from the network side device to the terminal. It is not limited to this. In addition, in the following embodiments, the terminal 110 functions as a receiving end of the downlink data packet and has a function of transmitting uplink feedback information of the downlink data packet.

FIG. 2 is a method flowchart of an adaptive transmission method according to an embodiment of the present invention. This embodiment will be described with reference to an example in which the adaptive transmission method is applied to the terminal 110 shown in FIG. As shown in FIG. 2, the adaptive transmission method includes the following steps.

Stage 201. The uplink rate calculation parameter is acquired, and the first uplink transmission rate is determined based on the uplink rate calculation parameter.

The uplink rate calculation parameters are the terminal's past uplink transmission rate, the terminal's channel quality information, the terminal's service information, the terminal's Quality of Service (QoS) information, and the uplink transmitted by the network-side device. Includes at least one of the available transmission rates. The past uplink transmission rate is the uplink transmission rate previously supported by the terminal. For example, past uplink transmission rates are calculated by the terminal based on past time periods.

The first uplink transmission rate is the uplink transmission rate available to the terminal.

For example, the uplink rate calculation parameter includes the past uplink transmission rate. The terminal calculates the first uplink transmission rate based on the past uplink transmission rate. For example, the terminal may directly use the past uplink transmission rate as the first uplink transmission rate.

For example, the uplink rate calculation parameters include the terminal's past uplink transmission rate and channel quality information. The terminal performs a weighted calculation on the terminal's past uplink transmission rate and channel quality information to obtain the first uplink transmission rate.

Optionally, the uplink rate calculation parameter may further include a guaranteed bit rate transmitted by the network side device. In this case, this step may include determining the received guaranteed bit rate as the first uplink transmission rate.

Stage 202. Get the downlink transmission rate.

The terminal may acquire the downlink transmission rate in the following three possible implementations.

In the first possible implementation, the terminal receives the downlink transmission rate transmitted by the network side device. The downlink transmission rate transmitted by the network-side device is a rate calculated and transmitted by the network-side device based on the downlink rate calculation parameter. The downlink rate calculation parameter includes at least one of the target information, the guaranteed rate of the downlink service, and the bit rate information of the downlink service. The target information includes the downlink service data amount and the downlink service transmission period.

When the network-side device calculates the downlink transmission rate based on the downlink rate calculation parameter, if the downlink rate calculation parameter contains the target information, the downlink transmission rate transmits the downlink service data amount. Equal to the period divided, if the downlink rate calculation parameter includes the guaranteed rate of the downlink service, the downlink transmission rate is equal to the guaranteed rate of the downlink service, or the downlink rate calculation parameter is down. When including the link service bit rate information, the downlink transmission rate is equal to the downlink service bit rate multiplied by k, where k is a constant, usually 1.2 or 1.3, which is limited. Including things that are not done.

The downlink transmission rate may be a rate that is periodically acquired and transmitted to the terminal before the network-side device transmits the downlink data packet, or is acquired in the process of the network-side device transmitting the downlink data packet. It should be noted that it may be the rate at which it is sent to the terminal. It is not limited to this.

In the second possible implementation, the terminal receives the downlink rate calculation parameter transmitted by the network side device and calculates the downlink transmission rate based on the downlink rate calculation parameter. The downlink rate calculation parameters are described in the first possible implementation. Details will not be described again here. The calculation method in which the terminal calculates the downlink transmission rate based on the downlink rate calculation parameter is the same as the calculation method in which the network-side device calculates the downlink transmission rate based on the downlink rate calculation parameter. Details will not be described again here.

In a third possible implementation, the terminal calculates the downlink transmission rate based on the downlink data reception status.

Optionally, the terminal acquires the size of the received downlink data packet and the period used to receive the downlink data packet, and calculates and calculates the ratio of the acquired size to the acquired period. The ratio may be used as the downlink transmission rate.

It should be noted that only the example in which the terminal acquires the downlink transmission rate in the above acquisition method is used above. Optionally, the terminal may acquire the downlink transmission rate by another acquisition method. It is not limited to this.

Stage 203. The second uplink transmission rate is calculated based on the downlink transmission rate.

The second uplink transmission rate is calculated based on the downlink transmission rate and the relationship between the downlink transmission rate and the uplink transmission rate. The relationship between the downlink transmission rate and the uplink transmission rate is between the size of the downlink data packet, the size of the uplink affirmative response data packet, the number of uplink affirmative response data packets and the number of downlink data packets. Can be obtained through transformations based on the correspondence of.

TCP is used as an example. When two downlink data packets correspond to one uplink affirmative response data packet, the maximum size of the downlink data packet is 1500 bytes, and when the size of the uplink affirmative response data packet is 40 bytes, the uplink data The difference between the amount and the amount of downlink data is (1500 × 2) / 40 = 75 times. When the difference between the amount of uplink data and the amount of downlink data is converted into a rate difference, the downlink transmission rate is 75 times higher than the uplink transmission rate. In other words, the second uplink transmission rate is equal to the downlink transmission rate divided by 75.

Optionally, the terminal may further acquire the terminal's service request and calculate the downlink transmission rate and the second uplink transmission rate based on the service request. The service request may include at least one of service type and service context information.

If the downlink service is a hybrid service, it is inaccurate to obtain a second uplink transmission rate based on the relationship between the downlink transmission rate and the uplink transmission rate. In this case, the downlink transmission rates of the various services need to be further distinguished. Therefore, the second uplink transmission rate needs to be acquired based on the service type and the downlink transmission rate of the service of the service type. Specifically, when calculating a particular downlink transmission rate, the terminal collects statistics individually for downlink data packets of various service types, obtains the downlink transmission rate of the service, and is the second of the services. Get the uplink transmission rate.

During the actual implementation, stages 201 through 203 are the transport layer, network layer, physical layer, media access control (MAC) layer, radio link control (Radio Link Control, RLC) protocol layer, or packet. It may be executed by any entity in the Data Convergence Protocol (PDCP) layer.

It should be further noted that steps 201 through 203 may be performed on a regular basis. It is not limited to this.

Stage 204. If the first uplink transmission rate is less than the second uplink transmission rate, an adaptive transmission policy is determined.

After calculating the first uplink transmission rate and the second uplink transmission rate, the terminal may detect whether the first uplink transmission rate is smaller than the second uplink transmission rate, and the first uplink transmission rate may be detected. If the link transmission rate is less than the second uplink transmission rate, the terminal determines the adaptive transmission policy.

The adaptive transmission policy is used to instruct the terminal to reduce the size of the uplink affirmative response data packet transmitted within a unit period, so that the service uplink affirmative response data packet is the first uplink. When transmitted at a rate below the transmission rate, the service downlink data packet can be transmitted at a rate above the downlink transmission rate. Optionally, the total size of the uplink acknowledgment data packets sent by the terminal within a unit period according to the instructions of the adaptive transmission policy is the uplink acknowledgment transmitted by the terminal within a unit period according to the instructions of the past transmission policy. Less than the total size of the response data packets. The transmission policy of the past is the transmission policy used before the adaptive transmission policy is determined. The unit period may be a preset period, for example 1 second or 30 seconds. A reduction in the total size of uplink acknowledgment data packets transmitted within a unit period is a reduction in the size of one acknowledgment data packet that needs to be transmitted, or an acknowledgment data that needs to be transmitted. It may be a reduction in the number of packets, or both.

During the actual implementation, the terminal may determine the adaptive transmission policy in at least one of the following possible implementations:

In the first possible implementation, the target data packet format of the uplink acknowledgment data packet is determined.

If the first uplink transmission rate is less than the second uplink transmission rate, the terminal acknowledges a relatively small uplink to match the uplink rate with the downlink rate and reduce the impact on downlink throughput. Data packets may be constructed and transmitted. Optionally, the terminal may determine the target data packet format for the uplink acknowledgment data packet. The size of the uplink acknowledgment data packet in the target data packet format is smaller than the size of the uplink acknowledgment data packet in the initial data packet format. The time when the target data packet format is determined is the first time point, and the initial data packet format is the data packet format used when the uplink acknowledgment data packet needs to be transmitted at the first time point. .. Optionally, the initial data packet format is the data packet format of the uplink affirmative response data packets transmitted so far, in other words, the data packets of the uplink affirmative response data packets used before the adaptive transmission policy was used. The format. The initial data packet format is the format specified in the system.

The target data packet format includes the indication information used to indicate the maximum sequence number of the correctly received downlink data packet, or includes the indication information and the time stamp information received. The indication information may be the maximum sequence number of the downlink data packets received continuously or the sequence number of the next downlink data packet to be received. During the actual implementation, if the target data packet format does not include a Selective Acknowledgment (SACK), the indication information is the sequence of the next downlink data packet of the continuously received downlink data packets. If it is a number and the target data packet format includes SACK, the indication information is the sequence number of the next downlink data packet of the downlink data packet confirmed by SACK.

Optionally, FIG. 3 shows a common format for uplink acknowledgment data packets in TCP. For TCP, the target data packet format is either a TCP header or a TCP header + timestamp (optional). Referring to FIG. 3, the 32-bit acknowledgment sequence number in the TCP header is the maximum sequence number of the continuously received downlink data packets. Optionally, some domains in the TCP header of the target data packet format may be omitted in order to further reduce the size of the uplink acknowledgment data packet in the target data packet format. For example, the 32-bit sequence number domain shown in FIG. 3 may be omitted in the TCP header. In TCP, the optional time stamp and some received data packet information (TCP SACK or TCP Duplicate-Selective Acknowledgment, D-SACK) will be sent to the receiver and during the establishment of the TCP connection. This is a function agreed upon by the sender. Therefore, if it is determined that the feature is supported, the timestamp information will always be carried, and if the data packets are received discontinuously, some of the received data packet information in the option will be carried. Therefore, the uplink acknowledgment data packet in the target data packet format is smaller than the uplink acknowledgment data packet in the initial data packet format. For example, if the initial data packet format is TCP header + time stamp, the target data packet format may be TCP header. In another example, if the initial data packet format is TCP D-SACK, the target data packet format may be TCP header or TCP header + time stamp.

In addition, the uplink acknowledgment data packet may further include a data portion, which usually contains a relatively large amount of content. Therefore, in this embodiment, in order to reduce the size of the uplink affirmative response data packet in the target data packet format, the target data packet format does not have to include the data portion, and the data portion and the uplink affirmative response data packet are separate. Will be sent to. It is not limited to this.

Optionally, in QUIC, the data packet format is Largest ACKed (QUIC ACK contains only one domain), N ACK blocks (N ≧ 1), Largest ACKed + time stamp, Largest ACKed + Time series largest ACKed block, or It may include ACKed + time stamp + Time series packet ACKed block. During the actual implementation, the data packet format may further include another field, eg, a type field. This embodiment does not limit this. In general, the acknowledgment packet format in QUIC is not completely determined. With subsequent evolution, the domain name in the data packet format described above may change. Only one example is used here, and the function of each domain is used as a limitation.

During the actual implementation, this step is to calculate the difference between the second uplink transmission rate and the first uplink transmission rate, and to obtain the target data packet format corresponding to the difference. May include. The larger the determined acknowledgment data packet in the target data packet format, the smaller the difference. Optionally, the terminal may determine the target data packet format corresponding to the difference based on the correspondence between the difference and the target data packet format. The correspondence may be a correspondence between the difference range and the data packet format. For example, the initial data packet format is TCP SACK. Table 1 shows the possible correspondences. In another example, the initial data packet format is TCP D-SACK. Table 2 shows the possible correspondences.

For example, this method is applied to TCP and the initial data packet format is TCP SACK. Based on Table 1, assuming that the calculated difference is 10, the terminal can determine the TCP header + time stamp as the target data packet format, or assuming that the calculated difference is 50, the terminal is TCP. The header can be determined as the target data packet format.

In the second possible implementation, the opportunity to send the uplink acknowledgment data packet is determined. The transmission opportunity is to return the uplink acknowledgment data packet after receiving M downlink data packets, where M is an integer greater than N and the time when the transmission opportunity is determined is the second time. Yes, N is the number of downlink data packets received if the uplink acknowledgment data packets need to be transmitted at a second point in time.

For example, when determining a transmission opportunity, after receiving three downlink data packets, the terminal transmits one uplink acknowledgment data packet to the network side device. In this case, N may be 3 and M determined by the terminal may be 4 or 5. It is not limited to this.

The terminal may acquire a preset M. Of course, during the actual implementation, this step is further the step of calculating the difference between the second uplink transmission rate and the first uplink transmission rate, and the step of acquiring the value of M corresponding to the difference. The larger the value of M, the larger the difference, which may include the acquisition stage. Optionally, the terminal may query the value of M corresponding to the calculated difference based on the correspondence between the difference range and the value of M. It is not limited to this.

The larger the value of M, the larger the number of downlink data packets received before the uplink acknowledgment data packets are returned. Therefore, in order to solve the problem that the system performance deteriorates because the network side device does not receive the uplink acknowledgment data packet after transmitting a large number of downlink data packets, the value of M is higher than the preset value. Small, preset values may be empirical values. This embodiment does not limit this.

It should be noted that after each downlink data packet is correctly received, the transmission opportunity may instead return the uplink acknowledgment data packet within the target duration. The target duration is smaller than the preset period, which is the interval period during which the uplink acknowledgment data packets are returned after each downlink data packet has been correctly received so far. For example, the preset period is 20 ms. In order to guarantee the reply rate of the uplink acknowledgment data packet, the terminal may return the uplink acknowledgment data packet to the network side device within 5 ms after receiving the downlink data packet.

In a third possible implementation, if the network-side device does not enable a forward error correction (FEC) mechanism for downlink data transmission, a first instructional information is generated or downlink. The first size of the FEC group for data transmission is calculated. The first instruction information is used to instruct the FEC mechanism for downlink data transmission to be enabled, and if the network-side device enables the FEC mechanism for downlink data transmission, the FEC group for downlink data transmission. The second size of is calculated. The second size is smaller than the original size of the FEC group. The original size is the size of the FEC group used in the FEC mechanism for downlink data transmission enabled by the network side device.

In a third possible implementation, the terminal may further detect if the network-side device has enabled the FEC mechanism for downlink data transmission. After the FEC mechanism for downlink data transmission is enabled, the accuracy of receiving downlink data packets by terminals improves. In other words, the number or size of uplink acknowledgment data packets that need to be sent is reduced. Therefore, if the network-side device does not enable the FEC mechanism for downlink data transmission, an uplink acknowledgment data packet will be transmitted if the first uplink transmission rate is less than the second uplink transmission rate. The terminal may generate a first instruction information to ensure that the first instruction information is used to instruct the network side device to enable the FEC mechanism for downlink data transmission. Optionally, the terminal may calculate the first size of the FEC group. This embodiment does not limit this. However, if the detection result of the terminal is that the network side device enables the FEC mechanism for downlink data transmission, the smaller the FEC group, the higher the redundancy, and the terminal has a problem with the downlink data packet. The terminal may calculate a second size of the FEC group for downlink data transmission to ensure transmission of the uplink acknowledgment data packet, as it is more likely to be received without. It should be noted that the FEC mechanism exists only at the server or transport layer. Therefore, the network-side device may be a service server or a device having a transport layer function.

Optionally, the terminal may calculate the first size based on the existing calculation method of the FEC group. It is not limited to this. The stage of calculating the second size by the terminal is the stage of calculating the difference between the second uplink transmission rate and the first uplink transmission rate, and the second size corresponding to the difference is acquired. It may include a step of acquisition, in which the larger the value of the second size, the smaller the difference corresponding to the second size.

Only one example in which the terminal determines the adaptive transmission policy in at least one of the three implementations described above is used above. Optionally, the terminal may determine the adaptive transmission policy in another way. This embodiment does not limit this.

Optionally, if the first uplink transmission rate is not less than the second uplink transmission rate, the terminal may perform the transmission according to the existing transmission policy. In this embodiment, the details will not be described again.

Stage 205. Data is transmitted to the peer end according to the adaptive transmission policy.

Since the adaptive transmission policy may include multiple implementations, this stage may include correspondingly possible implementations:

If the adaptive transmission policy includes the target data packet format of the uplink acknowledgment data packet, the uplink acknowledgment data packet is sent to the network side device based on the target data packet format.

If the uplink acknowledgment data packet needs to be sent after it is determined that the target data packet format has been acquired, the terminal sends the uplink acknowledgment data packet in the target data packet format to the network side device. Good. For example, in a TCP-based communication system, if the acquired target data packet format is determined to be a TCP header, the terminal sends an uplink affirmative response data packet, including only the TCP header. Data packets may be sent.

If the adaptive transmission policy includes a transmission opportunity for the uplink acknowledgment data packet, the uplink acknowledgment data packet is transmitted to the network-side device based on the transmission opportunity.

Optionally, if the transmission opportunity returns an uplink acknowledgment data packet after M downlink data packets have been received, the terminal will M during data transmission between the terminal and the network-side device. An uplink acknowledgment data packet may be returned after receiving the downlink data packets. It is not limited to this. If the transmission opportunity returns an uplink affirmative response data packet within the target duration after the downlink data packet is received, the terminal receives an uplink affirmative response within the target duration after the downlink data packet is received. The data packet may be returned to the network side device.

If the adaptive transmission policy includes a first instruction information, the first instruction information is transmitted to the network side device, and after receiving the first instruction information, the network side device has a forward error correction FEC mechanism for downlink data transmission. To enable. The first instruction information is used to instruct the FEC mechanism for downlink data transmission to be valid.

In the case of TCP, the terminal may use the TCP option to send the first instruction information to the network side device. It is not limited to this. In the case of QUIC, the terminal may transmit the first instruction information to the network side device using QUIIC QINDOW_UPDATE. Only one example in which the terminal transmits the first instruction information to the network side device using the above two types of information is used above. Optionally, during the actual implementation, for each transmission system, the terminal may send the first instruction information to the network side device in a different way. The actual implementation is not limited to this embodiment.

If the adaptive transmission policy includes a first size, the first size is transmitted to the network side device, and after receiving the first size, the network side device enables the FEC mechanism for downlink data transmission and the first Sends a downlink data packet to the terminal based on the size of. The first size is the size of the FEC group generated by the terminal and used for downlink data transmission.

This implementation is similar to the above implementation. Details will not be described again here.

If the adaptive transmission policy includes a second size, the second size is sent to the network side device, and after receiving the second size, the network side device terminals the downlink data packet based on the second size. Send to. The second size is the size of the FEC group generated by the terminal and used for downlink data transmission.

During the actual implementation, steps 204 and 205 may be implemented by the transport layer or physical layer at the terminal. This embodiment does not limit this.

In conclusion, according to the adaptive transmission method provided in this embodiment, the adaptive transmission policy is determined when the first uplink transmission rate is less than the second uplink transmission rate, and the data is sent to the peer end by the adaptive transmission policy. By being transmitted, the problem of relatively low downlink throughput due to the relatively low uplink transmission rate in related technologies is solved, and it is necessary to transmit by reducing the size of the uplink affirmative response data packet. The time used to send an uplink affirmative response data packet can be reduced. Thereby, normal uplink transmission is guaranteed when the first uplink transmission rate is relatively low, and downlink throughput is improved.

FIG. 4 is a method flowchart of an adaptive transmission method according to another embodiment of the present invention. This embodiment will be described with reference to an example in which the adaptive transmission method is applied to the network-side device 120 in FIG. As shown in FIG. 4, the adaptive transmission method includes the following steps.

Stage 401. Receives the first uplink transmission rate transmitted by the terminal.

The first uplink transmission rate is a rate calculated and transmitted by the terminal based on the uplink rate calculation parameter. The calculation method in which the terminal calculates the first uplink transmission rate is the same as the calculation method in step 201 in the above-described embodiment. Details will not be described again here.

Stage 402. Get downlink transmission rate

The step of acquiring the downlink transmission rate by the network-side device may include a step of acquiring the downlink rate calculation parameter and a step of calculating the downlink transmission rate based on the downlink rate calculation parameter. The specific calculation method is the same as the calculation method of step 202 in the above-described embodiment. Details will not be described again here.

Stage 403. The second uplink transmission rate is calculated based on the downlink transmission rate.

This step is similar to step 203 in the above-described embodiment. Details will not be described again here.

During the actual implementation, the network-side device may further receive the service request transmitted by the terminal and then calculate the downlink transmission rate and the second uplink transmission rate based on the service request. The service request may include at least one of service type and service context information. In addition, the calculation method in which the network-side device calculates the second uplink transmission rate based on the downlink transmission rate and the service request is the calculation method in which the terminal calculates the second uplink transmission rate in step 203. The same is true. Details will not be described again here.

In addition, only examples of network-side devices using steps 402 and 403 to obtain a second uplink transmission rate are used in this embodiment. Optionally, the network-side device may acquire the second uplink transmission rate by receiving the second uplink transmission rate transmitted by the terminal. The second uplink transmission rate is a rate acquired and transmitted by the terminal. The acquisition method in which the terminal acquires the second uplink transmission rate is the same as the acquisition method in stages 202 and 203 in the above-described embodiment. Details will not be described again here.

Steps 401 through 403 may be performed by any entity in the transport layer, network layer, physical layer, MAC layer, RLC layer, or PDCP layer.

Step 404. If the first uplink transmission rate is less than the second uplink transmission rate, an adaptive transmission policy is determined.

This step is similar to step 204 in the above embodiment. Details will not be described again here.

Optionally, if the first uplink transmission rate is not less than the second uplink transmission rate, the network-side device may perform the transmission according to the existing transmission policy. In this embodiment, the details will not be described again.

Stage 405. Data is transmitted to the peer end according to the adaptive transmission policy.

Correspondingly, this step may include the following possible implementations, as the adaptive transmission policy may include multiple implementations.

If the adaptive transmission policy includes the target data packet format of the uplink affirmative response data packet and / or the transmission opportunity of the uplink affirmative response data packet, the target data packet format and / or the transmission opportunity is transmitted to the terminal and the target data packet format. And / or the uplink affirmative response data packet transmitted by the terminal based on the transmission opportunity is received.

Optionally, if the terminal receives the target data packet format and the terminal needs to send an uplink acknowledgment data packet, the terminal sends the uplink acknowledgment data packet in the target data packet format to the network side device. May be sent to. For example, if the target data packet format is TCP ACK, the terminal may send the uplink acknowledgment data packet in TCP ACK format to the network side device when the uplink acknowledgment data packet needs to be transmitted. .. When the terminal receives the transmission opportunity, the terminal may transmit an uplink acknowledgment data packet to the network-side device when the transmission opportunity arrives. For example, when four downlink data packets are received, if the transmission opportunity returns an uplink affirmative response data packet to the network side device, the terminal will be up every time the terminal receives the four downlink data packets. The link affirmative response data packet may be returned to the network side device.

If the adaptive transmission policy includes the first instruction information, the FEC mechanism for downlink data transmission is enabled. The first instruction information is used to instruct the FEC mechanism for downlink data transmission to be valid.

If the adaptive transmission policy includes a first size, the FEC mechanism for downlink data transmission is enabled and the downlink data packet is sent to the terminal based on the first size. The first size is the size of the FEC group generated by the network side device and used for downlink data transmission.

If the adaptive transmission policy includes a second size, the downlink data packet is sent to the terminal based on the second size. The second size is the size of the FEC group generated by the network-side device and used for downlink data transmission.

Steps 404 and 405 may be implemented by the transport layer or physical layer in the network side device. This embodiment does not limit this.

In conclusion, according to the adaptive transmission method provided in this embodiment, the adaptive transmission policy is determined when the first uplink transmission rate is less than the second uplink transmission rate, and the data is sent to the peer end by the adaptive transmission policy. By being transmitted, the problem of relatively low downlink throughput due to the relatively low uplink transmission rate in related technologies is solved, and it is necessary to transmit by reducing the size of the uplink affirmative response data packet. The time used to send an uplink affirmative response data packet can be reduced. Thereby, normal uplink transmission is guaranteed when the first uplink transmission rate is relatively low, and downlink throughput is improved.

Only one example in which the above method is applied to a scenario in which a network-side device sends a downlink data packet to a terminal and the terminal feeds back an uplink acknowledgment data packet is used to illustrate the above embodiment. .. This method may be applied to a scenario in which a terminal sends an uplink data packet to a network-side device and the network-side device feeds back a downlink acknowledgment data packet during actual implementation. In this case, the method may include the following steps:

1. 1. Acquires the first downlink transmission rate and the second downlink transmission rate of the network side device. The first downlink transmission rate is the available downlink transmission rate and the second downlink transmission rate is required to support the uplink transmission rate at which the service uplink data packets are transmitted. Downlink transmission rate.

2. 2. If the first downlink transmission rate is less than the second downlink transmission rate, an adaptive transmission policy is determined. The service downlink affirmative response data packet is first by using an adaptive transmission policy to instruct network-side devices to reduce the size of the downlink affirmative response data packet sent within a unit period. When transmitted at a rate below the downlink transmission rate, the service uplink data packet may be transmitted at a rate above the uplink transmission rate.

3. 3. Data is transmitted to the peer end according to the adaptive transmission policy.

The implementation details of the steps are the same as the implementation details of the embodiments corresponding to FIGS. 2 and 3. In this embodiment, the details will not be described again.

FIG. 5 is a schematic structural diagram of an adaptive transmission device according to an embodiment of the present application. The adaptive transmission device may be the terminal 110 of the mobile communication system shown in FIG. 1 or the network side device 120 shown in FIG. The adaptive transmission device includes a processor 51, a receiver 52, a transmitter 53, a memory 54, and a bus 55.

The processor 51 includes one or more processing cores, which runs software programs and modules to execute various functional applications and process information.

The receiver 52 and the transmitter 53 may be implemented as communication components. The communication component may be a communication chip. The communication chip may include a receiving module, a transmission module, a modulation and demodulation module, etc., and is configured to modulate and / or demodulate the information using radio signals and receive or transmit the information.

The memory 54 is connected to the processor 51 by using the bus 55.

The memory 54 may mainly include a program storage area and a data storage area. The program storage area may store the operating system 541, the acquisition module 542, the decision module 543, the transmission module 544, and the application program 545 required by at least one other function. The data storage area may store data or the like formed based on the use of the signal receiving end. In addition, the memory 54 may be implemented by any type of volatile or non-volatile storage device, or a combination thereof.

The processor 51 is configured to perform the function of the acquisition module 542 for implementing the relevant acquisition steps in the embodiment of the method described above. Processor 51 is configured to perform the function of decision module 543 for implementing the relevant decision steps in the embodiments of the above method. Processor 51 is configured to perform the function of transmission module 544 to implement the relevant transmission steps in the embodiments of the above method.

In addition, the memory 54 includes a static random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a programmable read-only memory (PROM), and a read-only memory (ROM). , Magnetic memory, flash memory, magnetic disks, or optical disks, may be implemented by any type of volatile or non-volatile storage device, or a combination thereof.

FIG. 6 is a schematic structural diagram of an adaptive transmission device according to an embodiment of the present invention. As shown in FIG. 6, the adaptive transmission device may include an acquisition unit 610, a determination unit 620, and a transmission unit 630.

When the adaptive transmission device is applied to the terminal, the functions of the unit are as follows.

The acquisition unit 610 is configured to perform steps 201 through 203 in the above embodiments.

The decision unit 620 is configured to perform step 204 in the embodiment described above.

The transmission unit 630 is configured to perform step 205 in the embodiment described above.

When the adaptive transmission device is applied to the network side device, the function of the unit is as follows.

The acquisition unit 610 is configured to perform steps 401 through 403 in the embodiments described above.

The determination unit 620 is configured to perform step 404 in the embodiment described above.

The transmission unit 630 is configured to perform step 405 in the embodiment described above.

In conclusion, according to the adaptive transmission method provided in this embodiment, the adaptive transmission policy is determined when the first uplink transmission rate is less than the second uplink transmission rate, and the data is sent to the peer end by the adaptive transmission policy. By being transmitted, the problem of relatively low downlink throughput due to the relatively low uplink transmission rate in related technologies is solved, and it is necessary to transmit by reducing the size of the uplink affirmative response data packet. The time used to send an uplink affirmative response data packet can be reduced. Thereby, normal uplink transmission is guaranteed when the first uplink transmission rate is relatively low, and downlink throughput is improved.

One of ordinary skill in the art can implement each unit and each algorithm step in combination with electronic hardware or a combination of computer software and electronic hardware, in combination with the examples described in the embodiments disclosed herein. Will recognize. Whether a function is performed by hardware or software depends on the specific application and design constraints of the technical solution.

For ease and brevity of the description, one of ordinary skill in the art will clearly understand that for the detailed working processes of the above-mentioned devices and units, reference to the corresponding processes in embodiments of the above-mentioned methods. Details will not be described again here.

It should be understood that in the embodiments provided herein, the disclosed devices and methods may be implemented in other ways. For example, the embodiment of the device described is only an example. For example, the division of a unit can be nothing more than a division of logical functions, and in an actual implementation there can be other divisions. For example, multiple units or components may be combined, integrated into another system, or some features may be ignored or not performed.

Units described as separate parts may or may not be physically separated, and the parts labeled as units may or may not be physical units and may be located in one place. , Or it may be distributed to a plurality of network units. Some or all of these units may be selected based on actual requirements to achieve the purpose of the solution of the embodiment.

The above description is merely a specific implementation of the present application and is not intended to limit the scope of protection of the present application. Any modification or substitution readily understood by one of ordinary skill in the art within the technical scope disclosed herein shall be within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be covered by the scope of protection of the claims.

Claims (32)

It is an adaptive transmission method
At the stage of acquiring the first uplink transmission rate and the second uplink transmission rate of the terminal, the first uplink transmission rate is an available uplink transmission rate, and the second uplink transmission rate is available. The transmission rate is the uplink transmission rate required to support the downlink transmission rate at which the service downlink data packets are transmitted, at the acquisition stage, and
When the first uplink transmission rate is smaller than the second uplink transmission rate, it is a step of determining an adaptive transmission policy, and the adaptive transmission policy is transmitted to the terminal to the terminal in a unit period. When the uplink affirmative response data packet of the service is transmitted at a rate equal to or lower than the first uplink transmission rate by being used to instruct to reduce the size of the affirmative response data packet, the service. The step of determining that the downlink data packet can be transmitted at a rate equal to or higher than the downlink transmission rate.
A method comprising the steps of transmitting data to a peer end according to the adaptive transmission policy. The steps to determine the adaptive transmission policy are:
At the stage of determining the target data packet format of the uplink affirmative response data packet, the size of the uplink affirmative response data packet in the target data packet format is the size of the uplink affirmative response data packet in the initial data packet format. Smaller, the time point at which the target data packet format is determined is the first time point, the initial data packet format is when the uplink affirmative response data packet needs to be transmitted at the first time point. The data packet format used, the step of determining and / or the step of determining the transmission opportunity of the uplink affirmative response data packet, the transmission opportunity after receiving M downlink data packets. , M is an integer greater than N, the time point at which the transmission opportunity is determined is the second time point, where N is the uplink affirmative response data packet. The number of downlink data packets received if they need to be transmitted at the second point in time, the step of determining, and / or
If the network-side device does not enable a forward error correction ( FEC ) mechanism for downlink data transmission, it either generates first instruction information or calculates the first size of the FEC group for said downlink data transmission. The first instruction information is used to instruct the FEC mechanism for the downlink data transmission to be enabled, and the network-side device uses the FEC mechanism for the downlink data transmission. When is enabled, the second size of the FEC group for the downlink data transmission is calculated, the second size is smaller than the original size of the FEC group, and the original size is on the network side. The method of claim 1, comprising a step of generating or calculating the size of the FEC group used in the FEC mechanism for said downlink data transmission enabled by the device. The method of determining the target data packet format of the uplink acknowledgment data packet
The step of calculating the difference between the second uplink transmission rate and the first uplink transmission rate, and
The second aspect of the present invention includes a step of acquiring the target data packet format corresponding to the difference, wherein the larger the uplink acknowledgment data packet in the target data packet format is, the smaller the difference is. The method described. The step of determining the transmission opportunity of the uplink acknowledgment data packet is
The step of calculating the difference between the second uplink transmission rate and the first uplink transmission rate, and
The method according to claim 2, wherein the step of acquiring the value of M corresponding to the difference, the step of acquiring the value, the larger the value of M, the larger the difference. The step of calculating the second size of the FEC group for the downlink data transmission is:
The step of calculating the difference between the second uplink transmission rate and the first uplink transmission rate, and
A claim including a step of acquiring the second size corresponding to the difference, in which the larger the value of the second size is, the smaller the difference corresponding to the second size is. Item 2. The method according to item 2. The method is applied to the terminal and the step of transmitting data to the peer end according to the adaptive transmission policy is
When the adaptive transmission policy has the target data packet format of the uplink acknowledgment data packet, the step of transmitting the uplink acknowledgment data packet to the network side device based on the target data packet format.
When the adaptive transmission policy has the transmission opportunity of the uplink acknowledgment data packet, the step of transmitting the uplink acknowledgment data packet to the network-side device based on the transmission opportunity.
When the adaptive transmission policy has the first instruction information, it is a step of transmitting the first instruction information to the network side device, and the first instruction information is the FEC for the downlink data transmission. The stage of transmission, used to instruct the mechanism to take effect
When the adaptive transmission policy has the first size, the network side device is downed after receiving the first size at the stage of transmitting the first size to the network side device. The FEC mechanism for link data transmission is enabled and downlink data packets are transmitted to the terminal based on the first size, the first size being a pre-generated FEC group for the downlink data transmission. The size of, the transmission step, or if the adaptive transmission policy has the second size, the second size is transmitted to the network side device, and the second size is received. Later, the network-side device transmits a downlink data packet to the terminal based on the second size, the second size being the size of a pre-generated FEC group for the downlink data transmission. there, comprise transmitting method according to any one of claims 2 to 5. The method is applied to the network side device, and the step of transmitting data to the peer end according to the adaptive transmission policy is
If the adaptive transmission policy has the target data packet format of the uplink affirmative response data packet and / or the transmission opportunity of the uplink affirmative response data packet, the target data packet format and / or said to the terminal. The step of transmitting a transmission opportunity and receiving the uplink affirmative response data packet transmitted by the terminal based on the target data packet format and / or the transmission opportunity.
When the adaptive transmission policy has the first instruction information, it is a step of enabling the FEC mechanism for the downlink data transmission, and the first instruction information is the FEC mechanism for the downlink data transmission. The stage of enabling, used to order to enable
When the adaptive transmission policy has the first size, it is a step of enabling the FEC mechanism for the downlink data transmission and transmitting a downlink data packet to the terminal based on the first size. The first size is the size of a pre-generated FEC group for the downlink data transmission, to the second size if the stage of transmission or the adaptive transmission policy has the second size. Based on the claim, a step of transmitting a downlink data packet to the terminal, wherein the second size is the size of a pre-generated FEC group for the downlink data transmission, including a transmitting step. The method according to any one of 2 to 5. The step of acquiring the first uplink transmission rate of the terminal is
When the method is applied to the terminal, it includes a step of acquiring an uplink rate calculation parameter and a step of determining the first uplink transmission rate based on the uplink rate calculation parameter, or said method. If it is applied to the network side device, including receiving the first uplink transmission rate transmitted by the terminal, the method according to any one of claims 1 to 7. The step of acquiring the second uplink transmission rate of the terminal is
The stage of acquiring the downlink transmission rate and
The method according to any one of claims 1 to 7, comprising the step of calculating the second uplink transmission rate based on the downlink transmission rate. The method is applied to the terminal, and the step of acquiring the downlink transmission rate is
Step receives the downlink transmission rate transmitted by the network-side device, or receives the downlink rate calculation parameters sent by the network side device, based on the downlink rate calculation parameters, the down-link transmission 9. The method of claim 9, comprising the step of calculating the rate. An adaptive transmission device equipped with a processor
The processor is configured to acquire a first uplink transmission rate and a second uplink transmission rate of the terminal, the first uplink transmission rate being an available uplink transmission rate. The second uplink transmission rate is the uplink transmission rate required to support the downlink transmission rate at which the downlink data packet of the service is transmitted.
The processor is further configured to determine an adaptive transmission policy when the first uplink transmission rate is less than the second uplink transmission rate, the adaptive transmission policy transmitting in a unit period. The uplink affirmative response data packet of the service is transmitted at a rate equal to or lower than the first uplink transmission rate by being used to instruct the terminal to reduce the size of the uplink affirmative response data packet. If so, the downlink data packet of the service can be transmitted at a rate greater than or equal to the downlink transmission rate.
The processor is further configured to transmit data to the peer end in accordance with the adaptive transmission policy. The processor further
It is configured to determine the target data packet format of the uplink affirmative response data packet, and the size of the uplink affirmative response data packet in the target data packet format is the uplink affirmative response data packet in the initial data packet format. The time point at which the target data packet format is determined, which is smaller than the size of, is the first time point, and the initial data packet format requires that the uplink affirmative response data packet be transmitted at the first time point. The data packet format used in the case and / or the processor is further configured to determine the transmission opportunity of the uplink affirmative response data packet, which transmission opportunity is M downlink data packets. Is to return the uplink affirmative response data packet after receiving, where M is an integer greater than N, the time at which the transmission opportunity is determined is the second time, and N is the uplink. The number of downlink data packets received if the affirmative data packets need to be transmitted at the second time point and / or
The processor is further used to instruct the network-side device to enable the forward error correction ( FEC ) mechanism for downlink data transmission if it has not enabled the forward error correction ( FEC ) mechanism for downlink data transmission. The network-side device is configured to generate first instruction information or to calculate a first size of FEC group for said downlink data transmission, enabling the FEC mechanism for said downlink data transmission. When set to, the FEC group is configured to calculate a second size for the downlink data transmission, the second size being smaller than the original size of the FEC group, and the original size being The device of claim 11, wherein is the size of the FEC group used in the FEC mechanism for the downlink data transmission enabled by the network side device. The processor further
Calculate the difference between the second uplink transmission rate and the first uplink transmission rate.
The apparatus according to claim 12, wherein the target data packet format corresponding to the difference is acquired, and the larger the uplink acknowledgment data packet in the target data packet format, the smaller the difference. The processor further
Calculate the difference between the second uplink transmission rate and the first uplink transmission rate.
The apparatus according to claim 12, wherein the device is configured to acquire a value of M corresponding to the difference, and the larger the value of M, the larger the difference. The processor further
Calculate the difference between the second uplink transmission rate and the first uplink transmission rate.
12. The difference according to claim 12, wherein the second size corresponding to the difference is acquired, and the larger the value of the second size, the smaller the difference corresponding to the second size. apparatus. The device is applied to the terminal, and the processor further
When the adaptive transmission policy has the target data packet format of the uplink acknowledgment data packet, the uplink acknowledgment data packet is configured to be transmitted to the network side device based on the target data packet format. Is it done
The processor further causes the uplink acknowledgment data packet to be transmitted to the network-side device based on the transmission opportunity if the adaptive transmission policy has the opportunity to transmit the uplink acknowledgment data packet. Is it configured
The processor is further configured to transmit the first instruction information to the network-side device when the adaptive transmission policy has the first instruction information, the first instruction information being said. Used to order the FEC mechanism for downlink data transmission to be enabled, or
The processor is further configured to transmit the first size to the network side device if the adaptive transmission policy has the first size, and after receiving the first size, said The network-side device enables the FEC mechanism for the downlink data transmission and sends a downlink data packet to the terminal based on the first size, the first size being the downlink data transmission. Is the size of a pre-generated FEC group for, or the processor is further configured to transmit the second size to the network side device if the adaptive transmission policy has the second size. After receiving the second size, the network-side device transmits a downlink data packet to the terminal based on the second size, and the second size is the downlink data. The device according to any one of claims 12 to 15, which is the size of a pre-generated FEC group for transmission. The device is applied to the network side device, and the processor further
If the adaptive transmission policy has the target data packet format of the uplink affirmative response data packet and / or the transmission opportunity of the uplink affirmative response data packet, the target data packet format and / or said to the terminal. Is it configured to transmit a transmission opportunity and receive the uplink affirmative response data packet transmitted by the terminal based on the target data packet format and / or the transmission opportunity?
The processor is further configured to enable the FEC mechanism for the downlink data transmission if the adaptive transmission policy has the first instruction information, the first instruction information being down. Used to order the FEC mechanism for link data transmission to be enabled, or
The processor further enables the FEC mechanism for the downlink data transmission if the adaptive transmission policy has the first size and sends downlink data packets to the terminal based on the first size. The first size is the size of a pre-generated FEC group for said downlink data transmission, or the processor is further configured so that said adaptive transmission policy has said said second size. If present, it is configured to transmit a downlink data packet to the terminal based on the second size, the second size being the size of a pre-generated FEC group for the downlink data transmission. The apparatus according to any one of claims 12 to 15. When the device is applied to the terminal, the processor is further configured to acquire uplink rate calculation parameters and determine the first uplink transmission rate based on the uplink rate calculation parameters. It is, or if the device is applied to a network-side device, said apparatus further comprising a receiver, wherein the receiver is configured to receive the first uplink transmission rate transmitted by the terminal Has been
The apparatus according to any one of claims 11 to 17. The processor further
Obtain the downlink transmission rate and
The apparatus according to any one of claims 11 to 17, which is configured to calculate the second uplink transmission rate based on the downlink transmission rate. The device is applied to the terminal, the device further comprises a receiver, the receiver.
Receiving the downlink transmission rate transmitted by the network-side device, or the is configured to receive downlink rate calculation parameters sent by the network side device, based on the downlink rate calculation parameters The apparatus according to claim 19, wherein the downlink transmission rate is calculated. It is an adaptive transmission device
An acquisition unit configured to acquire the first uplink transmission rate and the second uplink transmission rate of the terminal, wherein the first uplink transmission rate is an available uplink transmission rate. The second uplink transmission rate is the uplink transmission rate required to support the downlink transmission rate at which the downlink data packet of the service is transmitted.
A determination unit configured to determine an adaptive transmission policy when the first uplink transmission rate is less than the second uplink transmission rate, the adaptive transmission policy transmitting in a unit period. The uplink affirmative response data packet of the service is transmitted at a rate equal to or lower than the first uplink transmission rate by being used to instruct the terminal to reduce the size of the uplink affirmative response data packet. If so, the downlink data packet of the service may be transmitted at a rate greater than or equal to the downlink transmission rate, with a determination unit.
A device comprising a transmission unit configured to transmit data to a peer end according to the adaptive transmission policy determined by the determination unit. The decision unit is further
It is configured to determine the target data packet format of the uplink affirmative response data packet, and the size of the uplink affirmative response data packet in the target data packet format is the uplink affirmative response data packet in the initial data packet format. The time point at which the target data packet format is determined, which is smaller than the size of, is the first time point, and the initial data packet format requires that the uplink affirmative response data packet be transmitted at the first time point. The data packet format used in the case and / or the determination unit is further configured to determine the transmission opportunity of the uplink affirmative response data packet, the transmission opportunity being M downlink data. After the packet is received, it returns the uplink affirmative response data packet, where M is an integer greater than N, the time at which the transmission opportunity is determined is the second time, and N is the up. The number of downlink data packets received if the link affirmative response data packets need to be transmitted at the second time point and / or
The decision unit is further used to instruct the network-side device to enable the forward error correction ( FEC ) mechanism for downlink data transmission if it has not enabled it. The first size of the FEC group for the downlink data transmission is calculated so that the network-side device generates the FEC mechanism for the downlink data transmission. When enabled, it is configured to calculate a second size of the FEC group for the downlink data transmission, the second size being smaller than the original size of the FEC group and the original size. 21. The apparatus of claim 21, wherein is the size of the FEC group used in the FEC mechanism for the downlink data transmission enabled by the network-side device, including a method of generation or calculation. The decision unit is further
Calculate the difference between the second uplink transmission rate and the first uplink transmission rate.
22. The apparatus of claim 22, wherein the target data packet format corresponding to the difference is acquired, and the larger the uplink acknowledgment data packet in the target data packet format, the smaller the difference. The decision unit is further
Calculate the difference between the second uplink transmission rate and the first uplink transmission rate.
The device according to claim 22, wherein the device is configured to acquire a value of M corresponding to the difference, and the larger the value of M, the larger the difference. The decision unit is further
Calculate the difference between the second uplink transmission rate and the first uplink transmission rate.
22. The second size is configured to acquire the second size, and the larger the value of the second size, the smaller the difference corresponding to the second size. apparatus. The device is applied to the terminal, and the transmission unit further
When the adaptive transmission policy has the target data packet format of the uplink acknowledgment data packet, the uplink acknowledgment data packet is configured to be transmitted to the network side device based on the target data packet format. Is it done
The transmission unit further causes the uplink acknowledgment data packet to be transmitted to the network-side device based on the transmission opportunity if the adaptive transmission policy has the opportunity to transmit the uplink acknowledgment data packet. Is configured in
The transmission unit is further configured to transmit the first command information to the network-side device when the adaptive transmission policy has the first command information, and the first command information is Is it used to order the FEC mechanism to be enabled for the downlink data transmission?
The transmission unit is further configured to transmit the first size to the network-side device if the adaptive transmission policy has the first size, and after receiving the first size, The network-side device enables the FEC mechanism for the downlink data transmission and transmits a downlink data packet to the terminal based on the first size, the first size being the downlink data. The size of the pre-generated FEC group for transmission, or the transmission unit may further transmit the second size to the network side device if the adaptive transmission policy has the second size. After receiving the second size, the network-side device sends a downlink data packet to the terminal based on the second size, and the second size is down. The device according to any one of claims 22 to 25, which is the size of a pre-generated FEC group for link data transmission. The device is applied to the network side device, and the transmission unit further
If the adaptive transmission policy has the target data packet format of the uplink affirmative response data packet and / or the transmission opportunity of the uplink affirmative response data packet, the target data packet format and / or said to the terminal. Is it configured to transmit a transmission opportunity and receive the uplink affirmative response data packet transmitted by the terminal based on the target data packet format and / or the transmission opportunity?
The transmission unit is further configured to enable the FEC mechanism for the downlink data transmission when the adaptive transmission policy has the first instruction information, the first instruction information being said. Is it used to instruct the FEC mechanism to be enabled for downlink data transmission?
The transmission unit further enables the FEC mechanism for the downlink data transmission if the adaptive transmission policy has the first size, and delivers downlink data packets to the terminal based on the first size. The first size is configured to transmit and is the size of a pre-generated FEC group for the downlink data transmission, or the transmission unit further has the adaptive transmission policy of said second. If it has a size, it is configured to transmit a downlink data packet to the terminal based on the second size, the second size being the size of a pre-generated FEC group for the downlink data transmission. The device according to any one of claims 22 to 25. The acquisition unit is further
When the device is applied to the terminal, it is configured to acquire the uplink rate calculation parameters and determine the first uplink transmission rate based on the uplink rate calculation parameters, or the device. If is applied to the network side device, the being configured to receive the first uplink transmission rate transmitted by the terminal, according to any one of claims 21 27. The acquisition unit is further
Obtain the downlink transmission rate and
The apparatus according to any one of claims 21 to 27, which is configured to calculate the second uplink transmission rate based on the downlink transmission rate. The device is applied to the terminal, and the acquisition unit further
Receiving the downlink transmission rate transmitted by the network-side device, or the is configured to receive downlink rate calculation parameters sent by the network side device, based on the downlink rate calculation parameters 29. The apparatus of claim 29, which is configured to calculate the downlink transmission rate. A computer-readable storage medium that is configured to store a program and, when the program is executed by a processor, performs the method according to any one of claims 1-10. A program used to execute the method according to any one of claims 1 to 10, when executed by a processor.