KR20190125427A - Adaptive transmission method and apparatus - Google Patents

Abstract

Embodiments of the present invention provide an adaptive transmission method and apparatus and relate to the field of data transmission techniques. In this adaptive transmission method, obtaining a first uplink transmission rate and a second uplink transmission rate of a terminal, wherein the first uplink transmission rate is an available uplink transmission rate and the second uplink transmission rate is a service. Is the uplink transmission rate required to transmit; Determining an adaptive transmission policy if the first uplink transmission rate is less than the second uplink transmission rate—the adaptive transmission policy instructs the terminal to reduce the size of the uplink acknowledgment data packet transmitted in a unit time period. Wherein the first uplink transmission rate may meet a requirement of a downlink transmission rate; Sending data to the peer end according to the adaptive transmission policy. In this way, the problem of the prior art that the downlink throughput is relatively low because the uplink transmission rate is relatively low is solved, and the data can be transmitted adaptively according to the adaptive transmission policy, thus the downlink throughput is improved. .

Description

Adaptive transmission method and apparatus

Embodiments of the present application relate to the field of data transmission technology, and in particular, to an adaptive transmission method and apparatus.

The Quick UDP Internet Connection (QUIC) and the Transfer Control Protocol (TCP), which are based on the User Datagram Protocol (UDP), are reliable connection-oriented transport layer communication protocols. To ensure that no packet loss occurs, the sending end assigns a serial number to each data packet when sending the data packet, and the receiving end sends a corresponding acknowledgment (ACK) for the successfully received data packet. Returns. For a TCP based service or a QUIC based service, the service rate is determined based on both the downlink data transmission rate and the uplink acknowledgment transmission rate.

In general, in wireless networks, the downlink transmission rate is relatively high, and the uplink transmission is a bottleneck. Thus, in existing solutions, the downlink throughput can be relatively low because the uplink transmission rate is limited.

In order to solve the problems of the prior art where the downlink throughput is low because the uplink transmission rate is low, embodiments of the present invention provide an adaptive transmission method and apparatus. These technical solutions are as follows:

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

A first uplink transmission rate available to the terminal and a second uplink transmission rate required for transmitting the service are obtained. If the first uplink transmission rate is less than the second uplink transmission rate, this indicates that the requirement cannot be met in the uplink. In this case, an adaptive transmission policy can be determined, and data is transmitted to the peer end according to this adaptive transmission policy. The adaptive transmission policy is used to instruct the terminal to reduce the size of the uplink acknowledgment data packet transmitted in a unit time period so that the uplink acknowledgment data packet of the service is transmitted at a rate that is less than or equal to the first uplink transmission rate. When the downlink data packet of the service can be transmitted at a rate that is above the downlink transmission rate.

The adaptive transmission policy is determined when the first uplink transmission rate is less than the second uplink transmission rate, and data is transmitted to the peer end according to the adaptive transmission policy so that the downlink because the uplink transmission rate is relatively low in the related art. The problem of relatively low throughput is solved, and the time used to transmit the uplink acknowledgment data packet that needs to be transmitted can be reduced by reducing the size of the uplink acknowledgment data packet, whereby the first It ensures normal uplink transmission when the uplink transmission rate is relatively low and improves downlink throughput.

In a first possible implementation, obtaining the first uplink transmission rate comprises:

If the method is applied to a terminal, obtaining, by the terminal, an uplink rate calculation parameter, and determining a first uplink transmission rate based on the uplink rate calculation parameter; Or if the method is applied to a network-side device, receiving the first uplink transmission rate transmitted by the 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 parameter. The uplink rate calculation parameter may include a historical uplink transmission rate of the terminal transmitted by the network side device, channel quality information of the terminal, service information of the terminal, quality of service (QoS) information of the terminal, and uplink available. At least one of the transmission rates. The historical uplink transmission rate is an uplink transmission rate that is historically supported by the terminal.

In a second possible implementation, obtaining the second uplink transmission rate comprises:

Obtaining a downlink transmission rate, and calculating a second uplink transmission rate based on the downlink transmission rate.

Obtaining the downlink transmission rate may include the following implementations: In a first implementation, if this method is applied to a terminal, the downlink transmission rate transmitted by the network side device is received; Or a downlink rate calculation parameter sent by the network side device is received, and the downlink transmission rate is calculated based on the downlink rate calculation parameter. In a second implementation, if this method is applied to a network side device, the downlink transmission rate is calculated based on the downlink rate calculation parameter.

During actual implementation, the service requirements of the terminal can be further obtained, and the second uplink transmission rate is calculated based on the downlink transmission rate and the service requirements. This service requirement may include at least one of a service type and service context information.

Acquiring the service requirements of the terminal, if the method is applied to the terminal, directly obtaining the service requirements by the terminal; Or if the method is applied to a network side device, receiving, by the network side device, a service requirement transmitted by the terminal.

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

In a 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 moment at which the target data packet format is determined is the first moment and the initial data packet format is the data packet format used if the uplink acknowledgment data packet needs to be transmitted at the first moment.

In a second possible implementation, an opportunity for transmission of an uplink acknowledgment data packet is determined. This transmission opportunity is to return an uplink acknowledgment data packet after M downlink data packets have been received, M is an integer greater than N, the moment at which the transmission opportunity is determined is the second moment, and N is the uplink acknowledgment. The quantity of downlink data packets received if a response data packet needs to be sent at a second instant.

In a third possible implementation, when the network side device does not enable the Forward Error Correction (FEC) mechanism for downlink data transmission, the first instruction information is generated, or the FEC for downlink data transmission. A first size of the group is calculated, the first instruction information being used to instruct to enable the FEC mechanism for downlink data transmission; When the network side device enables the FEC for downlink data transmission, 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 the network side. The size of the FEC group used in the FEC mechanism for downlink data transmission enabled by the device.

The target data packet format is determined such that the size of the encapsulated uplink acknowledgment data packet is smaller than the size of the data packet encapsulated in the initial data packet format. Thus, the amount of data that needs to be uploaded by the terminal is reduced, and it can still be ensured that the uplink and downlink rates match when the first uplink transmission rate is less than the second uplink transmission rate, thereby Ensure downlink transmission throughput.

The transmission opportunity is determined so that the uplink acknowledgment data packet is sent to the network side device after the M downlink data packets are received. Thus, the quantity of uplink acknowledgment data packets that need to be transmitted is reduced, that is to say that the uplink and downlink rates are matched, thereby ensuring downlink transmission throughput.

When the network side device does not enable the FEC mechanism for downlink data transmission, the first instruction information is generated, or the first size is calculated, and thereby the accuracy of the downlink data packet received by the terminal. By guaranteeing, it reduces the quantity of uplink acknowledgment data packets that need to be uploaded and guarantees downlink transmission throughput. Similarly, when the network side device has enabled the FEC mechanism for downlink data transmission, the second size of the FEC group for the downlink data transmission is calculated and thereby the downlink data packet received by the terminal. By ensuring accuracy, the number of uplink acknowledgment data packets that need to be uploaded is reduced, and downlink transmission throughput is guaranteed.

In the foregoing method, determining the target data packet format of the uplink acknowledgment data packet comprises: calculating a difference between the second uplink transmission rate and the first uplink transmission rate; Obtaining a target data packet format corresponding to the difference, wherein a larger uplink acknowledgment data packet of the target data packet format results in a smaller difference.

Determining a transmission opportunity of an uplink acknowledgment data packet includes calculating a difference between a second uplink transmission rate and a first uplink transmission rate; And obtaining a value of M corresponding to the difference, where a larger value of M results in a larger difference.

Computing the second size of the FEC group for downlink data transmission includes: calculating a difference between the second uplink transmission rate and the first uplink transmission rate; And obtaining a second size corresponding to the difference, wherein a larger value of the second size results in a smaller difference corresponding to the second size.

In a fourth possible implementation, if the above method is applied to the terminal, transmitting data to the peer end according to the adaptive transmission policy,

If the adaptive transmission policy includes a target data packet format of the uplink acknowledgment data packet, sending the uplink acknowledgment data packet to the network side device based on the target data packet format;

If the adaptive transmission policy includes a transmission opportunity of the uplink acknowledgment data packet, sending the uplink acknowledgment data packet to the network side device based on the transmission opportunity;

If the adaptive transmission policy includes the first command information, transmitting the first command information to the network-side device—after receiving the first command information, the network-side device forwards error correction for downlink data transmission. ) Enable the mechanism, and the first instruction information is used to instruct to enable the FEC mechanism for downlink data transmission;

If the adaptive transmission policy includes the first size, sending the first size to the network-side device—after receiving the first size, the network-side device enables the FEC mechanism for downlink data transmission, Transmit a downlink data packet to the terminal based on one size, wherein the first size is a size of a pre-generated FEC group for downlink data transmission; or

If the adaptive transmission policy includes the second size, sending the second size to the network-side device—after receiving the second size, the network-side device sends the downlink data packet to the terminal based on the second size. And the second size is the size of a pre-generated FEC group for downlink data transmission.

If this method is applied to the network side device, the step of transmitting data to the peer end according to the adaptive transmission policy,

If the adaptive transmission policy includes the target data packet format of the uplink acknowledgment data packet and / or the transmission opportunity of the uplink acknowledgment data packet, transmitting the target data packet format and / or transmission opportunity to the terminal, and the target Receiving an uplink acknowledgment data packet sent by the terminal based on the data packet format and / or transmission opportunity;

If the adaptive transmission policy includes first instruction information, enabling the FEC mechanism for downlink data transmission, the first instruction information being used to instruct to enable the FEC mechanism for downlink data transmission;

If the adaptive transmission policy includes the first size, enabling the FEC mechanism for downlink data transmission, and transmitting the downlink data packet to the terminal based on the first size, the first size being the downlink The size of a pre-generated FEC group for data transmission; or

If the adaptive transmission policy includes a second size, sending 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 downlink data transmission; do.

According to a second aspect, an adaptive transmission apparatus is provided. Such an adaptive transmission device includes a processor and a transmitter connected to the processor. Such a processor is configured to execute instructions, and the processor implements the adaptive transmission method in the first aspect by executing such instructions.

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

1 is a schematic diagram of an implementation environment in accordance with embodiments of the present invention.
2 is a flowchart of an adaptive transmission method according to an embodiment of the present invention.
3 is a schematic diagram of a possible structure of an uplink acknowledgment data packet in TCP according to an embodiment of the present invention.
4 is a flowchart of an adaptive transmission method according to an embodiment of the present invention.
5 is a schematic structural diagram of an adaptive transmission apparatus according to an embodiment of the present invention.
6 is a schematic structural diagram of an adaptive transmission apparatus according to an embodiment of the present invention.

As used herein, "first", "second", and the like do not indicate any sequence, quantity, or importance, but are merely used to distinguish between different components. Similarly, singular expressions ("a / an", "one", etc.) are not intended to indicate a quantity restriction, but rather at least one. "Connection", "link" and the like are not limited to physical or mechanical connections, and may include electrical connections regardless of direct or indirect links.

As used herein, a "module" is a program or instruction that is generally stored in memory and capable of implementing some functions. As used herein, a “unit” is a functional structure that is generally divided based on logic. Such a "unit" may be implemented only by hardware, or may be implemented by a combination of software and hardware.

As used herein, "a plurality of" means two or more than two. The term “and / or” describes an association between associated objects and expresses that three relationships may exist. For example, A and / or B can express three cases: only A exists, both A and B exist, and only B exists. The letter "/" generally indicates an "or" relationship between the associated objects.

1 is a schematic diagram of an implementation environment involved in an adaptive transmission method according to embodiments of the present invention. As shown in FIG. 1, such an implementation environment may include a terminal 110 and a network side device 120.

Terminal 110 may be a mobile terminal, eg, a mobile telephone (or referred to as a "cellular" telephone) or a computer with a mobile terminal, eg, portable, pocket sized, handheld, computer embedded, or It may be an in-vehicle mobile device. There is no restriction on this. For another example, the terminal 110 may include a subscriber unit, a subscriber station, a mobile station (MS), a mobile console (mobile), a remote station (RS), and an access point ( Access Point, AP, Remote Terminal, Access Terminal, AT, User Terminal, UT, User Agent, UA, User Device, Customer Premise Equipment Customer Premises Equipment (CPE), or user equipment (User Equipment, UE). Optionally, the terminal 110 may also be a relay. This embodiment imposes no limitation on this.

During actual implementation, terminal 110 may establish a wireless connection to network side device 120 using a wireless air interface and transmit uplink data to network side device 120 via this wireless connection. The wireless air interface may be a wireless air interface at any frequency based on 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 next generation mobile communication network technical standards. Optionally, the wireless air interface may be a Wireless Fidelity (Wifi) air interface.

In addition, for the edge user at the cell edge, the uplink transmission rate of the edge user generally cannot meet the downlink transmission requirements because the network coverage at the cell edge is relatively poor. Therefore, the terminal 110 described in the following embodiments may be an edge user at the cell edge. This embodiment imposes no limitation on 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. There is no restriction on this. In addition, during actual implementation, the network side device 120 may be further divided into two logical functional entities: the control plane and the user plane, and the functions of the network side device described in the following embodiments are such control planes. It may be implemented by or may be implemented by such a user plane. There is no restriction on 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. Optionally, the data packet exchanged between the terminal 110 and the network side device 120 may alternatively be a data packet encapsulated based on another transport layer or application layer protocol, which protocol is a feedback based protocol. This embodiment imposes no limitation on this.

The adaptive transmission method provided in the following embodiments may be applied to the terminal 110 shown in FIG. 1 or may be applied to the network side device 120 shown in FIG. These embodiments impose no limitation on this. In the following embodiments, the uplink is from the terminal to the network side device and the downlink is from the network side device to the terminal. There is no restriction on this. In addition, in the following embodiments, the terminal 110 serves as a receiving end of the downlink data packet, and has the ability to transmit uplink feedback information for the downlink data packet.

2 is a method flow diagram of an adaptive transmission method according to an embodiment of the present invention. This embodiment is described using 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.

Step 201. Acquire an uplink rate calculation parameter and determine a first uplink transmission rate based on this uplink rate calculation parameter.

The uplink rate calculation parameter is available for the historical uplink transmission rate of the terminal, the channel quality information of the terminal, the service information of the terminal, the quality of service (QoS) information of the terminal, and the uplink transmitted by the network side device. At least one of the transmission rates. The historical uplink transmission rate is the uplink transmission rate previously supported by the terminal. For example, the history uplink transmission rate is calculated by the terminal based on the history time period.

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

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

For example, the uplink rate calculation parameter includes historical uplink transmission rate and channel quality information of the terminal. The terminal performs weighting calculation on the historical uplink transmission rate and channel quality information of the terminal and obtains a first uplink transmission rate.

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

Step 202. Obtain a downlink transmission rate.

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

In a 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 the 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 target information, guaranteed rate of downlink service, and bit rate information of downlink service. The target information includes downlink service data volume and downlink service transmission duration.

The network side device calculating the downlink transmission rate based on the downlink rate calculation parameter,

If the downlink rate calculation parameter includes target information, the downlink transmission rate is equal to the downlink service data volume divided by the downlink service transmission duration;

If the downlink rate calculation parameter includes a guaranteed rate of downlink service, the downlink transmission rate is equal to the guaranteed rate of downlink service; or

If the downlink rate calculation parameter includes bit rate information of the downlink service, then the downlink transmission rate is equal to the bit rate of the downlink service multiplied by k-k is a constant, generally 1.2 or 1.3, which is Not limited to.

The downlink transmission rate may be a rate obtained periodically and transmitted to the terminal before the network side device transmits the downlink data packet, or the network side device is obtained in the process of transmitting the downlink data packet and transmitted to the terminal. It should be noted that it may be a rate. There is no restriction on this.

In a second possible implementation, the terminal receives the downlink rate calculation parameter sent by the network side device and calculates the downlink transmission rate based on this downlink rate calculation parameter. The downlink rate calculation parameter is described in the first possible implementation. Details are not described herein again. The calculation scheme in which the terminal calculates the downlink transmission rate based on the downlink rate calculation parameter is similar to the calculation scheme in which the network side device calculates the downlink transmission rate based on the downlink rate calculation parameter. Details are not described herein again.

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

Optionally, the terminal obtains the size of the received downlink data packet and the duration used to receive such downlink data packet, calculates the ratio of the obtained size to the obtained duration, and downlinks the calculated ratio. Can be used as the transmission rate.

It should be noted that only the example in which the terminal acquires the downlink transmission rate with the aforementioned acquisition schemes is used above. Optionally, the terminal may acquire the downlink transmission rate in another acquisition manner. There is no restriction on this.

Step 203. Calculate the second uplink transmission rate 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 depends on the size of the downlink data packet, the size of the uplink acknowledgment data packet, and the correspondence between the quantity of uplink acknowledgment data packets and the quantity of downlink data packets. Based on the conversion.

TCP is used as an example. When the two downlink data packets correspond to one uplink acknowledgment data packet, if the maximum size of the downlink data packets is 1500 bytes and the size of the uplink acknowledgment data packet is 40 bytes, the uplink and downlink data volume The difference between them is (1500 * 2) / 40 = 75 times. If the difference between the uplink and downlink data volumes is converted to a rate difference, the downlink transmission rate is 75 times greater 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 obtain a service requirement of the terminal and calculate a second uplink transmission rate based on the downlink transmission rate and the service requirement. This service requirement may include at least one of a service type and service context information.

When the downlink service is a hybrid service, it is incorrect to obtain a second uplink transmission rate based on the relationship between the downlink transmission rate and the uplink transmission rate. In this case, downlink transmission rates of different services need to be further distinguished. Thus, the second uplink transmission rate needs to be obtained based on the service type and the downlink transmission rate of the service of the service type. Specifically, when calculating the specific downlink transmission rate, the terminal individually collects statistics regarding downlink data packets of different service types, obtains the downlink transmission rate of the service, and thereby obtains a second uplink transmission rate of the service. Acquire.

During actual implementation, steps 201 to 203 may be performed by transport layer, network layer, physical layer, media access control (MAC) layer, radio link control (RLC) protocol layer, or packet data convergence protocol ( Packet Data Convergence Protocol (PDCP) layer may be performed by any entity.

It should further be noted that steps 201 to 203 can be performed periodically. There is no restriction on this.

Step 204. Determine an adaptive transmission policy if the first uplink transmission rate is less than the second uplink transmission rate.

After calculating the first uplink transmission rate and the second uplink transmission rate, the terminal may detect whether the first uplink transmission rate is less than the second uplink transmission rate, and the terminal may determine that the first uplink transmission rate is equal to the first uplink transmission rate. If less than 2 uplink transmission rate, the adaptive transmission policy is determined.

The adaptive transmission policy is used to instruct the terminal to reduce the size of the uplink acknowledgment data packet transmitted in a unit time period so that the uplink acknowledgment data packet of the service is transmitted at a rate that is less than or equal to the first uplink transmission rate. When the downlink data packet of the service can be transmitted at a rate that is above the downlink transmission rate. Optionally, the total size of the uplink acknowledgment data packets transmitted by the terminal in the unit time period according to the command of the adaptive transmission policy is the uplink acknowledgment transmitted by the terminal in the unit time period according to the command of the history transmission policy. Smaller than the total size of the data packets. The historical transmission policy is a transmission policy used before the adaptive transmission policy is determined. The unit time period may be a preset time period, for example, 1 second or 30 seconds. The reduction in the total size of uplink acknowledgment data packets transmitted in a unit time period is the reduction in the size of a single uplink acknowledgment data packet that needs to be transmitted, or the quantity of uplink acknowledgment data packets that need to be transmitted. Reduction, or both.

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

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

When the first uplink transmission rate is less than the second uplink transmission rate, the terminal configures a relatively small uplink acknowledgment data packet to match the uplink rate with the downlink rate and reduce the impact on downlink throughput. Can transmit Optionally, the terminal may determine the target data packet format of 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 moment at which the target data packet format is determined is the first moment and the initial data packet format is the data packet format used if the uplink acknowledgment data packet needs to be transmitted at the first moment. Optionally, the initial data packet format is that of the historically transmitted uplink acknowledgment data packet, that is to say of the uplink acknowledgment data packet and that is used before the adaptive transmission policy is used. The initial data packet format is the format specified by the system.

The target data packet format includes indication information used to indicate the maximum serial number of correctly received downlink data packets, or includes such indication information and received time stamp information. The indication information may be the maximum serial number of consecutively received downlink data packets, or the serial number of the next downlink data packet expected to be received. During actual implementation, if the target data packet format does not include a selective acknowledgment (SACK), the indication information is the serial number of the next downlink data packet of consecutively received downlink data packets, and the target data packet format is If the SACK is included, the indication information is the serial number of the next downlink data packet of the downlink data packet acknowledged by the SACK.

Optionally, FIG. 3 shows a common format of uplink acknowledgment data packets in TCP. For TCP, the target data packet format is a TCP header, or (optionally) a TCP header + timestamp. Referring to Figure 3, the 32-bit acknowledgment serial number in the TCP header is the maximum serial number of consecutively received downlink data packets. Optionally, to further reduce the size of the uplink acknowledgment data packet in the target data packet format, some domains may be omitted in the TCP header of the target data packet format. For example, the domain of the 32-bit serial number shown in FIG. 3 may be omitted in the TCP header. In TCP, the timestamp in the selection and some received data packet information (TCP SACK or TCP Duplicate-Selective Acknowledgement (D-SACK)) are features that are agreed upon by the receiver and transmitter during the establishment of a TCP connection. admit. Thus, once it is determined that these features are supported, the timestamp information is always carried and some received data packet information in the option is carried when the data packets are received discontinuously. Thus, 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 a TCP header + timestamp, the target data packet format may be a TCP header. For another example, if the initial data packet format is TCP D-SACK, the target data packet format may be a TCP header or a TCP header + timestamp.

In addition, the uplink acknowledgment data packet may further comprise a data portion, which data portion generally contains a relatively large amount of content. Thus, in this embodiment, to reduce the size of the uplink acknowledgment data packet of the target data packet format, the target data packet format may not include the data portion, and the data portion and the uplink acknowledgment data packet are separate. Is sent to. There is no restriction on this.

Optionally, in QUIC, the data packet format is: Largest ACKed (QUIC ACK contains only one domain), N ACK blocks (N ≥ 1), Largest ACKed + Timestamp, Largest ACKed + Maximum ACKed block after Time, or a time after the Largest ACKed + Timestamp + Max ACKed block. During actual implementation, the data packet format may further include other fields, eg, the type field. This embodiment imposes no limitation on this. Currently, the acknowledgment packet format in QUIC has not been fully determined. In a subsequent evolution, the domain name of the aforementioned data packet format can be changed. Only examples are used herein and the function of each domain is used as a limitation.

During actual implementation, this step may include calculating a difference between the second uplink transmission rate and the first uplink transmission rate, and obtaining a target data packet format corresponding to the difference. Larger determined uplink acknowledgment data packets of the target data packet format result in smaller differences. 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. This 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 applies to TCP and the initial data packet format is TCP SACK. Assuming that the calculated difference is 10, based on Table 1, the terminal may determine the TCP header + timestamp as the target data packet format; Alternatively, assuming that the calculated difference is 50, the terminal may determine the TCP header as the target data packet format.

In a second possible implementation, an opportunity for transmission of an uplink acknowledgment data packet is determined. This transmission opportunity is to return an uplink acknowledgment data packet after M downlink data packets have been received, M is an integer greater than N, the moment at which the transmission opportunity is determined is the second moment, and N is the uplink acknowledgment. The quantity of downlink data packets received if a response data packet needs to be sent at a second instant.

For example, when determining a transmission opportunity, the terminal transmits one uplink acknowledgment data packet to the network side device after receiving three downlink data packets. In this case, N is 3 and M determined by the terminal may be 4 or 5. There is no restriction on this.

The terminal may obtain a preset M. Of course, during actual implementation, this step may include calculating a difference between the second uplink transmission rate and the first uplink transmission rate; And obtaining a value of M corresponding to the difference, where a larger value of M results in a larger difference. 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. There is no restriction on this.

A larger value of M results in a larger quantity of downlink data packets received before the uplink acknowledgment data packet is returned. Therefore, in order to solve the problem that the system performance is degraded 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 less than the preset value, and in advance The set value may be an empirical value. This embodiment imposes no limitation on this.

It should be noted that the transmission opportunity may alternatively be to return an uplink acknowledgment data packet within the target duration after each downlink data packet is correctly received. The target duration is less than the preset duration, and the preset duration is the interval duration at which the uplink acknowledgment data packet is returned after each downlink data packet has been historically correctly received. For example, the preset duration is 20 ms. To ensure the return 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, when the network side device does not enable the Forward Error Correction (FEC) mechanism for downlink data transmission, the first instruction information is generated, or the FEC for downlink data transmission. A first size of the group is calculated, the first instruction information being used to instruct to enable the FEC mechanism for downlink data transmission; When the network side device has enabled the FEC mechanism for downlink data transmission, 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. 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 whether 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 the terminal is improved, that is, the quantity or size of uplink acknowledgment data packets that need to be transmitted is reduced. . Thus, if the network side device has not enabled the FEC mechanism for downlink data transmission, to ensure that the uplink acknowledgment data packet is sent when the first uplink transmission rate is less than the second uplink transmission rate, The terminal may generate first command information, which 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 imposes no limitation on this. However, if the detection result of the terminal is that the network side device has enabled the FEC mechanism for downlink data transmission, then the smaller FEC group has higher redundancy and higher probability of successfully receiving the downlink data packet by the terminal. In order to ensure the transmission of the uplink acknowledgment data packet, the terminal may calculate the second size of the FEC group for the downlink data transmission. It should be noted that the FEC mechanism only exists at the server or transport layer. Thus, the network side device may be a device having a service server or transport layer function.

Optionally, the terminal may calculate the first size based on an existing calculation method of the FEC group. There is no restriction on this. The step of calculating the second magnitude by the terminal includes: calculating a difference between the second uplink transmission rate and the first uplink transmission rate; And obtaining a second size corresponding to the difference, wherein a larger value of the second size results in a smaller difference corresponding to the second size.

Only examples in which the terminal determines the adaptive transmission policy in at least one of the three implementations described above are used above. Optionally, the terminal may determine the adaptive transmission policy in other ways. This embodiment imposes no limitation on this.

Optionally, when the first uplink transmission rate is not less than the second uplink transmission rate, the terminal may perform transmission according to an existing transmission policy. Details are not described again in this embodiment.

Step 205. Send data to the peer end according to the adaptive transmission policy.

Since the adaptive transmission policy may include a plurality of implementations, this step may correspondingly include the following 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.

After determining that the target data packet format is obtained, when the uplink acknowledgment data packet needs to be transmitted, the terminal may transmit the uplink acknowledgment data packet of the target data packet format to the network side device. For example, in a TCP-based communication system, if it is determined that the obtained target data packet format is a TCP header, the terminal may transmit an uplink acknowledgment data packet including only the TCP header when transmitting the uplink acknowledgment data packet. have.

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

Optionally, if the transmission opportunity returns an uplink acknowledgment data packet after the M downlink data packets have been received, the terminal may receive the M downlink data packets during data transmission between the terminal and the network side device. The uplink acknowledgment data packet may then be returned. There is no restriction on this. If the transmission opportunity returns the uplink acknowledgment data packet within the target duration after the downlink data packet is received, the terminal sends the uplink acknowledgment data packet to the network side device within the target duration after receiving the downlink data packet. Can return to

If the adaptive transmission policy includes the first command information, the first command information is sent to the network-side device, and after receiving the first command information, the network-side device sends a forward error correction (FEC) for downlink data transmission. Enable the mechanism. The first instruction information is used to instruct to enable the FEC mechanism for downlink data transmission.

In TCP, the terminal may send the first command information to the network side device using TCP options. There is no restriction on this. In QUIC, the terminal may transmit the first command information to the network side device using QUIC QINDOW_UPDATE. Only the example in which the terminal transmits the first command information to the network side device using the two types of information described above is used above. Optionally, during the actual implementation, for each transmission system, the terminal may send the first command information to the network side device in another manner. Actual implementation is not limited in this embodiment.

If the adaptive transmission policy includes the first size, the first size is sent 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 size. The downlink data packet is transmitted to the terminal based on the size. 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 previous one. Details are not described herein again.

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

During actual implementation, steps 204 and 205 may be implemented by a transport layer or a physical layer at the terminal. This embodiment imposes no limitation on 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 data is sent to the peer end according to the adaptive transmission policy. The problem that the downlink throughput is relatively low is transmitted because the uplink transmission rate is relatively low in the related art, and the time used to transmit the uplink acknowledgment data packet that needs to be transmitted is uplink acknowledgment data packet. It can be reduced by reducing the size of, thereby ensuring normal uplink transmission when the first uplink transmission rate is relatively low, and improving downlink throughput.

4 is a method flow diagram of an adaptive transmission method according to another embodiment of the present invention. This embodiment is described using an example where the adaptive transmission method is applied to the network side device 120 of FIG. As shown in FIG. 4, this adaptive transmission method includes the following steps.

Step 401. Receive a first uplink transmission rate sent by the terminal.

This first uplink transmission rate is the 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 similar to the calculation method in step 201 in the above-described embodiment. Details are not described herein again.

Step 402. Obtain a downlink transmission rate.

Obtaining the downlink transmission rate by the network side device may include obtaining a downlink rate calculation parameter, and calculating the downlink transmission rate based on this downlink rate calculation parameter. The specific calculation method is similar to the calculation method in step 202 in the above-described embodiment. Details are not described herein again.

Step 403. Calculate the second uplink transmission rate based on the downlink transmission rate.

This step is similar to step 203 in the above embodiment. Details are not described herein again.

During the actual implementation, the network-side device may further receive the service requirement transmitted by the terminal, and then calculate the second uplink transmission rate based on the downlink transmission rate and the service requirement. This service requirement may include at least one of a service type and service context information. Also, the calculation scheme in which the network side device calculates the second uplink transmission rate based on the downlink transmission rate and the service requirement is similar to the calculation scheme in which the terminal calculates the second uplink transmission rate in step 203. Details are not described herein again.

Also, only the example in which the network side device obtains the second uplink transmission rate using steps 402 and 403 is used in this embodiment. Optionally, the network-side device may obtain the second uplink transmission rate by receiving a second uplink transmission rate transmitted by the terminal. The second uplink transmission rate is the rate obtained and transmitted by the terminal. The acquisition scheme in which the terminal acquires the second uplink transmission rate is similar to the acquisition scheme in steps 202 and 203 in the above-described embodiment. Details are not described herein again.

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

Step 404. Determine the adaptive transmission policy if the first uplink transmission rate is less than the second uplink transmission rate.

This step is similar to step 204 in the above-described embodiment. Details are not described herein again.

Optionally, when the first uplink transmission rate is not less than the second uplink rate, the network side device may perform the transmission according to an existing transmission policy. Details are not described again in this embodiment.

Step 405. Send data to the peer end according to the adaptive transmission policy.

Since the adaptive transmission policy may include a plurality of implementations, this step may correspondingly include the following possible implementations.

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

Optionally, if the terminal receives the target data packet format, when the terminal needs to send an uplink acknowledgment data packet, the terminal may send an uplink acknowledgment data packet in the target data packet format to the network side device. For example, if the target data packet format is TCP ACK, when the uplink acknowledgment data packet needs to be transmitted, the terminal may send an uplink acknowledgment data packet in TCP ACK format to the network side device; If the terminal receives the transmission opportunity, the terminal may send an uplink acknowledgment data packet to the network side device when the transmission opportunity arrives. For example, if a transmission opportunity returns an uplink acknowledgment data packet to the network side device when four downlink data packets are received, the terminal confirms uplink acknowledgment every time the terminal receives four downlink data packets. The 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 to enable the FEC mechanism for downlink data transmission.

If the adaptive transmission policy includes the 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 created by the network side device and used for downlink data transmission.

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

Steps 404 and 405 may be implemented by a transport layer or a physical layer at the network side device. This embodiment imposes no limitation on 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 data is sent to the peer end according to the adaptive transmission policy. The problem that the downlink throughput is relatively low is transmitted because the uplink transmission rate is relatively low in the related art, and the time used to transmit the uplink acknowledgment data packet that needs to be transmitted is uplink acknowledgment data packet. It can be reduced by reducing the size of, thereby ensuring normal uplink transmission when the first uplink transmission rate is relatively low, and improving downlink throughput.

Only the example in which the above-described method is applied to the scenario in which the network-side device sends a downlink data packet to the terminal and the terminal feeds back an uplink acknowledgment data packet is used to describe the above-described embodiments. During actual implementation, this method may also be applied to a scenario where a terminal sends an uplink data packet to a network side device and the network side device feeds back a downlink acknowledgment data packet. In this case, this method may include the following steps:

1. Obtain a first downlink transmission rate and a second downlink transmission rate of the network-side device, where the first downlink transmission rate is an available downlink transmission rate and the second downlink transmission rate is an uplink data of the service. The downlink transmission rate required to support the uplink transmission rate at which the packet is transmitted.

2. Determine an adaptive transmission policy if the first downlink transmission rate is less than the second downlink transmission rate—the adaptive transmission policy determines to reduce the size of downlink acknowledgment data packets transmitted in a unit time period. Used to instruct the device, when the downlink acknowledgment data packet of the service is transmitted at a rate that is less than or equal to the first downlink transmission rate, the uplink data packet of the service may be transmitted at a rate that is above the uplink transmission rate;

3. Send data to peer end according to adaptive transmission policy.

Implementation details of these steps are similar to implementation details of the embodiments corresponding to FIGS. 2 and 3. Details are not described again in this embodiment.

5 is a schematic structural diagram of an adaptive transmission apparatus according to an exemplary embodiment of the present application. Such an adaptive transmission apparatus may be the terminal 110 in the mobile communication system shown in FIG. 1, or may be the network side device 120 shown in FIG. 1. Such an 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, and the processor 51 executes software programs and modules to perform various functional applications and process information.

Receiver 52 and transmitter 53 may be implemented as communication components. Such communication component may be a communication chip. Such communication chips may include a receiving module, a transmitting module, a modulation and demodulation module, and the like, and are configured to modulate and / or demodulate information and to receive or transmit information using a wireless signal.

The memory 54 is connected to the processor 51 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 an operating system 541, an acquisition module 542, a determination module 543, a transmission module 544, an application program 545 required by at least one other function, and the like. The data storage area may store data generated based on the use of the signal receiver. In addition, memory 54 may be implemented by any type of volatile or non-volatile storage device or combination thereof.

The processor 51 is configured to perform the functions of the acquisition module 542 for implementing the relevant acquisition steps in the foregoing method embodiments. The processor 51 is configured to perform the functions of the decision module 543 for implementing the relevant decision steps in the foregoing method embodiments. The processor 51 is configured to perform the functions of the transmission module 544 for implementing the relevant transmission steps in the foregoing method embodiments.

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

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

When such an adaptive transmitting device is applied to a terminal, the functions of these units are as follows:

Acquisition unit 610 is configured to perform steps 201 to 203 in the above-described embodiment.

Determination unit 620 is configured to perform step 204 in the above-described embodiment.

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

When such an adaptive transmitting apparatus is applied to a network side device, the functions of these units are as follows:

Acquisition unit 610 is configured to perform steps 401 to 403 in the above-described embodiment.

Determination unit 620 is configured to perform step 404 in the above-described embodiment.

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

In conclusion, according to the adaptive transmission method provided in these embodiments, the adaptive transmission policy is determined when the first uplink transmission rate is less than the second uplink transmission rate, and the data is determined at the peer end according to the adaptive transmission policy. The problem of downlink throughput being relatively low since the uplink transmission rate is relatively low in the related art is solved, and the time used to transmit the uplink acknowledgment data packet that needs to be transmitted is uplink acknowledgment data. It can be reduced by reducing the size of the packet, thereby ensuring normal uplink transmission and improving downlink throughput when the first uplink transmission rate is relatively low.

Those skilled in the art will appreciate that units and algorithm steps may be implemented by electronic hardware or in combination with computer software and electronic hardware, in combination with the examples described in the embodiments disclosed herein. Can be recognized. Whether these functions are performed by hardware or software depends on the specific applications and design constraints of the technical solutions.

For ease and simplicity of explanation, for a detailed working process of the foregoing apparatus and units, it will be clearly understood by those skilled in the art that reference is made to the corresponding process in the foregoing method embodiments. . Details are not described herein again.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the described device embodiments are merely examples. For example, the unit division may be only logical function division and may be other division during actual implementation. For example, a plurality of units or components may be combined or integrated into another system, or some features may be ignored or not performed.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one location, or a plurality of network units Can be dispersed on the field. Some or all of the units may be selected based on actual requirements to achieve the objectives of the solutions of the embodiments.

The foregoing descriptions are merely specific implementations of the present application, but are not intended to limit the protection scope of the present application. Any variation or replacement readily figured out by a person skilled in the art within the technical scope disclosed in the present application shall fall within the protection scope of the present application. Accordingly, the protection scope of the present application will be subject to the protection scope of the claims.

Claims (30)

As an adaptive transmission method, the method
Obtaining a first uplink transmission rate and a second uplink transmission rate of the terminal, wherein the first uplink transmission rate is an available uplink transmission rate and the second uplink transmission rate is a downlink data packet of a service; Is an uplink transmission rate required to support the transmitted downlink transmission rate;
Determining an adaptive transmission policy if the first uplink transmission rate is less than the second uplink transmission rate, wherein the adaptive transmission policy reduces the size of an uplink acknowledgment data packet transmitted in a unit time period. When used to instruct the terminal to transmit an uplink acknowledgment data packet of the service at a rate that is less than or equal to the first uplink transmission rate, the downlink data packet of the service is to be transmitted at a rate that is greater than or equal to the downlink transmission rate. Can-; And
Transmitting data to a peer end in accordance with the adaptive transmission policy. The method of claim 1, wherein determining the adaptive transmission policy comprises:
Determining a target data packet format of the uplink acknowledgment data packet, wherein the size of the uplink acknowledgment data packet of the target data packet format is smaller than the size of the uplink acknowledgment data packet of the initial data packet format; The instant at which the data packet format is determined is a first instant and the initial data packet format is a data packet format used if the uplink acknowledgment data packet needs to be transmitted at the first instant; And / or
Determining a transmission opportunity of the uplink acknowledgment data packet, wherein the transmission opportunity returns the uplink acknowledgment data packet after M downlink data packets have been received, where M is an integer greater than N and the transmission The moment at which the opportunity is determined is a second moment, and N is the quantity of downlink data packets received if the uplink acknowledgment data packet needs to be sent at the second moment; And / or
When the network-side device has not enabled a forward error correction (FEC) mechanism for downlink data transmission, generating first instruction information, or calculating a first size of an FEC group for the downlink data transmission; Step-said first instruction information is used to instruct to enable an FEC mechanism for said downlink data transmission; And when the network side device has enabled the FEC mechanism for the downlink data transmission, calculating a second size of the FEC group for the downlink data transmission, wherein the second size is the original size of the FEC group Smaller and the original size is the size of the FEC group used in the FEC mechanism for the downlink data transmission enabled by the network side device. The method of claim 2, wherein determining a target data packet format of the uplink acknowledgment data packet comprises:
Calculating a difference between the second uplink transmission rate and the first uplink transmission rate; And
Obtaining a target data packet format corresponding to the difference, wherein a larger uplink acknowledgment data packet of the target data packet format results in a smaller difference. 3. The method of claim 2, wherein determining the transmission opportunity of the uplink acknowledgment data packet comprises:
Calculating a difference between the second uplink transmission rate and the first uplink transmission rate; And
Obtaining a value of M corresponding to the difference, wherein a larger value of M results in a larger difference. The method of claim 2, wherein calculating a second size of the FEC group for downlink data transmission comprises:
Calculating a difference between the second uplink transmission rate and the first uplink transmission rate; And
Obtaining a second size corresponding to the difference, wherein a larger value of the second size results in a smaller difference corresponding to the second size. The method according to any one of claims 1 to 5, wherein the method is applied to a terminal, and the step of transmitting data to a peer end according to the adaptive transmission policy,
If the adaptive transmission policy includes a target data packet format of the uplink acknowledgment data packet, sending the uplink acknowledgment data packet to the network side device based on the target data packet format;
If the adaptive transmission policy includes a transmission opportunity of the uplink acknowledgment data packet, sending the uplink acknowledgment data packet to the network side device based on the transmission opportunity;
If the adaptive transmission policy includes the first command information, transmitting the first command information to the network side device, the first command information commanding to enable an FEC mechanism for the downlink data transmission. Used to-;
If the adaptive transmission policy includes the first size, sending the first size to the network-side device—after receiving the first size, the network-side device sends an FEC for the downlink data transmission. Enable a mechanism and send a downlink data packet to the terminal based on the first size, the first size being the size of a pre-generated FEC group for the downlink data transmission; or
If the adaptive transmission policy includes the second size, sending the second size to the network-side device—after receiving the second size, the network-side device is down based on the second size. Send a link data packet to the terminal, wherein the second size is the size of a pre-generated FEC group for the downlink data transmission. The method according to any one of claims 1 to 5, wherein the method is applied to the network side device, and the step of transmitting data to a peer end in accordance with the adaptive transmission policy comprises:
If the adaptive transmission policy includes a target data packet format of the uplink acknowledgment data packet and / or a transmission opportunity of the uplink acknowledgment data packet, the target data packet format and / or the transmission opportunity is transmitted to the terminal. Transmitting, and receiving an uplink acknowledgment data packet transmitted by the terminal based on the target data packet format and / or the transmission opportunity;
If the adaptive transmission policy includes the first instruction information, enabling the FEC mechanism for the downlink data transmission, wherein the first instruction information is instructed to enable the FEC mechanism for the downlink data transmission. Used to-;
If the adaptive transmission policy includes the first size, enabling an FEC mechanism for the downlink data transmission, and transmitting a downlink data packet to the terminal based on the first size; A first size is the size of a pre-generated FEC group for the downlink data transmission; or
If the adaptive transmission policy includes the second size, transmitting a downlink data packet to the terminal based on the second size, wherein the second size is a pre-generated FEC group for the downlink data transmission. The size of-how to include. The method of claim 1, wherein the obtaining of the first uplink transmission rate of the terminal comprises:
If the method is applied to the terminal, obtaining an uplink rate calculation parameter, and determining the first uplink transmission rate based on the uplink rate calculation parameter; or
If the method is applied to the network-side device, receiving a first uplink transmission rate transmitted by the terminal. The method of claim 1, wherein the obtaining of the second uplink transmission rate of the terminal comprises:
Obtaining the downlink transmission rate; And
Calculating the second uplink transmission rate based on the downlink transmission rate. 10. The method of claim 9, wherein the method is applied to a terminal and the step of obtaining the downlink transmission rate is
Receiving a downlink transmission rate transmitted by the network side device; or
Receiving a downlink rate calculation parameter sent by the network side device, and calculating the downlink transmission rate based on the downlink rate calculation parameter. An adaptive transmission device, comprising: a processor;
The processor is configured to obtain a first uplink transmission rate and a second uplink transmission rate of the terminal, wherein the first uplink transmission rate is an available uplink transmission rate and the second uplink transmission rate is a value of a service; The uplink transmission rate required to support the downlink transmission rate at which the downlink data packet 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 being an uplink acknowledgment data packet transmitted in a unit time period. Is used to instruct the terminal to reduce the size of the data link so that when the uplink acknowledgment data packet of the service is transmitted at a rate that is less than or equal to the first uplink transmission rate, the downlink data packet of the service is transmitted to the downlink transmission. May be transmitted at a rate that is above the rate; And
And the processor is further configured to transmit data to a peer end according to the adaptive transmission policy. The method of claim 11, wherein the processor is further configured to:
Determine a target data packet format of the uplink acknowledgment data packet, wherein the size of the uplink acknowledgment data packet of the target data packet format is less than the size of an uplink acknowledgment data packet of the initial data packet format; The instant at which the packet format is determined is a first instant and the initial data packet format is a data packet format used if the uplink acknowledgment data packet needs to be transmitted at the first instant; And / or
Determine a transmission opportunity of the uplink acknowledgment data packet, wherein the transmission opportunity returns the uplink acknowledgment data packet after M downlink data packets have been received, where M is an integer greater than N and the transmission opportunity Is a second instant, and N is the quantity of downlink data packets received if the uplink acknowledgment data packet needs to be transmitted at the second instant; And / or
When the network side device has not enabled a forward error correction (FEC) mechanism for downlink data transmission, to generate first instruction information, or to calculate a first size of an FEC group for the downlink data transmission; The first instruction information is used to instruct to enable an FEC mechanism for the downlink data transmission; And when the network side device has enabled the FEC mechanism for the downlink data transmission, to calculate a second size of the FEC group for the downlink data transmission, wherein the second size is larger than the original size of the FEC group. Small and the original size is the size of the FEC group used in the FEC mechanism for the downlink data transmission enabled by the network side device. The method of claim 12, wherein the processor is further configured to:
Calculate a difference between the second uplink transmission rate and the first uplink transmission rate; And
And to obtain a target data packet format corresponding to the difference, wherein a larger uplink acknowledgment data packet of the target data packet format results in a smaller difference. The method of claim 12, wherein the processor is further configured to:
Calculate a difference between the second uplink transmission rate and the first uplink transmission rate; And
An apparatus configured to obtain a value of M corresponding to the difference, wherein a larger value of M results in a larger difference. The method of claim 12, wherein the processor is further configured to:
Calculate a difference between the second uplink transmission rate and the first uplink transmission rate; And
And obtain a second size corresponding to the difference, wherein a larger value of the second size results in a smaller difference corresponding to the second size. The apparatus of claim 11, wherein the apparatus is applied to the terminal, and the processor is further configured to:
If the adaptive transmission policy includes a target data packet format of the uplink acknowledgment data packet, send the uplink acknowledgment data packet to the network side device based on the target data packet format;
If the adaptive transmission policy includes a transmission opportunity of the uplink acknowledgment data packet, send the uplink acknowledgment data packet to the network side device based on the transmission opportunity;
If the adaptive transmission policy includes the first command information, to transmit the first command information to the network-side device, the first command information instructing to enable an FEC mechanism for the downlink data transmission. Used-;
If the adaptive transmission policy includes the first size, to send the first size to the network-side device-after receiving the first size, the network-side device sends an FEC mechanism for the downlink data transmission. Enable, send a downlink data packet to the terminal based on the first size, wherein the first size is the size of a pre-generated FEC group for the downlink data transmission; or
If the adaptive transmission policy includes the second size, sending the second size to the network-side device-after receiving the second size, the network-side device downlink based on the second size Send a data packet to the terminal, wherein the second size is the size of a pre-generated FEC group for the downlink data transmission. The apparatus of claim 11, wherein the apparatus is applied to the network side device and wherein the processor is further configured to:
If the adaptive transmission policy includes a target data packet format of the uplink acknowledgment data packet and / or a transmission opportunity of the uplink acknowledgment data packet, the target data packet format and / or the transmission opportunity is transmitted to the terminal. To transmit and to receive an uplink acknowledgment data packet sent by the terminal based on the target data packet format and / or the transmission opportunity;
If the adaptive transmission policy includes the first instruction information, to enable an FEC mechanism for the downlink data transmission, the first instruction information instructs to enable the FEC mechanism for the downlink data transmission. Used-;
If the adaptive transmission policy includes the first size, to enable a FEC mechanism for the downlink data transmission, and to send 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; or
And if the adaptive transmission policy includes the second size, to transmit a downlink data packet to the terminal based on the second size, the second size being the pre-generated FEC group for the downlink data transmission. Size-The device being configured. The method according to any one of claims 11 to 17,
If the apparatus is applied to the terminal, the processor is further configured to obtain an uplink rate calculation parameter; And determine the first uplink transmission rate based on the uplink rate calculation parameter; or
If the apparatus is applied to the network side device, the apparatus further comprises a receiver, the receiver configured to receive a first uplink transmission rate transmitted by the terminal. The processor of claim 11, wherein the processor is further configured to:
To obtain the downlink transmission rate; And
And calculate the second uplink transmission rate based on the downlink transmission rate. 20. The apparatus of claim 19, wherein the device is applied to the terminal, the device further comprises a receiver,
Receive a downlink transmission rate sent by the network side device; or
Receive a downlink rate calculation parameter sent by the network side device and calculate the downlink transmission rate based on the downlink rate calculation parameter. An adaptive transmission device, the device comprising:
An acquiring unit, configured to obtain a first uplink transmission rate and a second uplink transmission rate of the terminal, wherein the first uplink transmission rate is an available uplink transmission rate and the second uplink transmission rate is a downlink of a service. The uplink transmission rate required to support the downlink transmission rate at which the link data packet is transmitted;
A determining 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 determining the size of an uplink acknowledgment data packet transmitted in a unit time period. A rate that is used to instruct the terminal to decrease so that downlink data packets of the service are above the downlink transmission rate when the uplink acknowledgment data packets of the service are transmitted at a rate that is below the first uplink transmission rate. May be sent to; And
And a sending unit, configured to transmit data to the peer end according to the adaptive transmission policy determined by the determining unit. The method of claim 21, wherein the determining unit is further
Determine a target data packet format of the uplink acknowledgment data packet, wherein the size of the uplink acknowledgment data packet of the target data packet format is less than the size of an uplink acknowledgment data packet of the initial data packet format; The instant at which the packet format is determined is a first instant and the initial data packet format is a data packet format used if the uplink acknowledgment data packet needs to be transmitted at the first instant; And / or
Determine a transmission opportunity of the uplink acknowledgment data packet, wherein the transmission opportunity returns the uplink acknowledgment data packet after M downlink data packets have been received, where M is an integer greater than N and the transmission opportunity Is a second instant, and N is the quantity of downlink data packets received if the uplink acknowledgment data packet needs to be transmitted at the second instant; And / or
When the network side device has not enabled a forward error correction (FEC) mechanism for downlink data transmission, to generate first instruction information, or to calculate a first size of the FEC group for downlink data transmission; First instruction information is used to instruct to enable the FEC mechanism for the downlink data transmission; And when the network side device has enabled the FEC mechanism for the downlink data transmission, to calculate a second size of the FEC group for the downlink data transmission, wherein the second size is larger than the original size of the FEC group. Small and the original size is the size of the FEC group used in the FEC mechanism for the downlink data transmission enabled by the network side device. The method of claim 22, wherein the determining unit is further
Calculate a difference between the second uplink transmission rate and the first uplink transmission rate; And
And to obtain a target data packet format corresponding to the difference, wherein a larger uplink acknowledgment data packet of the target data packet format results in a smaller difference. The method of claim 22, wherein the determining unit is further
Calculate a difference between the second uplink transmission rate and the first uplink transmission rate; And
An apparatus configured to obtain a value of M corresponding to the difference, wherein a larger value of M results in a larger difference. The method of claim 22, wherein the determining unit is further
Calculate a difference between the second uplink transmission rate and the first uplink transmission rate; And
And obtain a second size corresponding to the difference, wherein a larger value of the second size results in a smaller difference corresponding to the second size. 26. The apparatus of any of claims 21-25, wherein the apparatus is applied to the terminal and the transmitting unit is further
If the adaptive transmission policy includes a target data packet format of the uplink acknowledgment data packet, send the uplink acknowledgment data packet to the network side device based on the target data packet format;
If the adaptive transmission policy includes a transmission opportunity of the uplink acknowledgment data packet, send the uplink acknowledgment data packet to the network side device based on the transmission opportunity;
If the adaptive transmission policy includes the first command information, to transmit the first command information to the network-side device, the first command information instructing to enable an FEC mechanism for the downlink data transmission. Used-;
If the adaptive transmission policy includes the first size, to send the first size to the network-side device-after receiving the first size, the network-side device sends an FEC mechanism for the downlink data transmission. Enable, send a downlink data packet to the terminal based on the first size, wherein the first size is the size of a pre-generated FEC group for the downlink data transmission; or
If the adaptive transmission policy includes the second size, sending the second size to the network-side device-after receiving the second size, the network-side device downlink based on the second size Send a data packet to the terminal, wherein the second size is the size of a pre-generated FEC group for the downlink data transmission. 26. The apparatus of any of claims 21 to 25, wherein the apparatus is applied to the network side device, and wherein the transmitting unit further comprises:
If the adaptive transmission policy includes a target data packet format of the uplink acknowledgment data packet and / or a transmission opportunity of the uplink acknowledgment data packet, the target data packet format and / or the transmission opportunity is transmitted to the terminal. To transmit and to receive an uplink acknowledgment data packet sent by the terminal based on the target data packet format and / or the transmission opportunity;
If the adaptive transmission policy includes the first instruction information, to enable an FEC mechanism for the downlink data transmission, the first instruction information instructs to enable the FEC mechanism for the downlink data transmission. Used-;
If the adaptive transmission policy includes the first size, to enable a FEC mechanism for the downlink data transmission, and to send 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; or
And if the adaptive transmission policy includes the second size, to transmit a downlink data packet to the terminal based on the second size, the second size being the pre-generated FEC group for the downlink data transmission. Size-The device being configured. The apparatus of claim 21, wherein the acquiring unit is further
When the apparatus is applied to the terminal, to obtain an uplink rate calculation parameter and to determine the first uplink transmission rate based on the uplink rate calculation parameter; or
And if the apparatus is applied to the network-side device, receive the first uplink transmission rate transmitted by the terminal. The apparatus of claim 21, wherein the acquiring unit is further
To obtain the downlink transmission rate; And
And calculate the second uplink transmission rate based on the downlink transmission rate. The apparatus of claim 29, wherein the apparatus is applied to the terminal, and wherein the acquiring unit is further:
Receive a downlink transmission rate sent by the network side device; or
Receive a downlink rate calculation parameter sent by the network side device and calculate the downlink transmission rate based on the downlink rate calculation parameter.

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