CN103067432A - Sending method of data, sending end and communication system - Google Patents
Sending method of data, sending end and communication system Download PDFInfo
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Abstract
The invention provides a sending method of data, a sending end and a communication system, and relates to the field of communication. The sending method of data, the sending end and the communication system aim to solve the problem that transmission efficiency of network data is low. The sending method of data is as follows. A current link bandwidth from the sending end to a receiving end in a first duration is obtained. According to the current link bandwidth, a rate of sending a data packet from the sending end to the receiving end in a next duration after the first duration is confirmed. The sending end sends the data packet to the receiving end in the next duration according to the rate. The sending method of data, the sending end and the communication system improve transmission efficiency of network data.
Description
Technical field
The present invention relates to the communications field, refer to especially a kind of sending method, transmitting terminal and communication system of data.
Background technology
Take wireless network as example, along with the arrival of 3G (The 3rd Generation, third generation digital communication) network and popularizing of intelligent terminal, the data volume of intelligent terminal online is the trend of rapid growth.Take the wireless data service of China Mobile as example, no matter be CMNET (China Mobile Net, the title of the access point of China Mobile's GPRS network) business, or CMWAP (Control Memory Wireless Application Protocol, China Mobile's WAP (wireless application protocol)) business all continues to rise.Wherein, CMNET data volume accounting increases day by day.When the larger cellphone subscriber of radix was converted into the mobile phone Internet user more, the pressure that the Wireless Data Transmission bandwidth will be born was with increasing.
Wireless link bandwidth between intelligent terminal and the wireless base station is the bottleneck of wireless Internet, the data transmission rate meeting aggravate congestion that source is too fast, cross slow data transmission rate and then can not take full advantage of bandwidth, both of these case all can affect user's business and use impression.
Along with the change of wireless propagation environment or the movement of user terminal, the Radio Link available bandwidth also can change in real time, when with constant rate sending data, easily causes the low problem of wireless Internet data transmission efficiency.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of sending method, transmitting terminal and communication system of data, can improve the data transmission efficiency of network.
For solving the problems of the technologies described above, embodiments of the invention provide technical scheme as follows:
On the one hand, provide a kind of sending method of data, comprising:
Obtain the interior transmitting terminal of the first duration to the current available link bandwidth of the direction of receiving terminal;
According to described current available link bandwidth, determine that the interior described transmitting terminal of next duration of described the first duration sends the speed of packet to described receiving terminal;
Described transmitting terminal sends packet to described receiving terminal according to described speed in described next duration.
Describedly obtain transmitting terminal in the first duration and comprise to the step of the current available link bandwidth of the direction of receiving terminal:
Obtain receiving terminal to the second link average bandwidth of the direction of transmitting terminal and transmitting terminal to the ratio between the first link average bandwidth of the direction of receiving terminal;
Calculate the second bit number of the affirmation packet that described transmitting terminal in the first bit number of the packet that described transmitting terminal in the first duration sends to described receiving terminal and described the first duration receives from described receiving terminal;
According to described ratio, described the first bit number, described the second bit number, calculate the interior transmitting terminal of described the first duration to the current available link bandwidth of the direction of receiving terminal.
Described the first duration sends the second duration between constantly that first o'clock of first packet is carved into the affirmation bag that receives last packet when being current transmission predetermined quantity packet;
Perhaps, described the first duration is to send the second duration between constantly that first o'clock of first packet is carved into the affirmation bag that receives last packet in current at least one transmission window.
Described according to described ratio, described the first bit number, described the second bit number, the transmitting terminal that calculates in described the first duration calculates according to following formula to the step of the current available link bandwidth of the direction of receiving terminal:
Described transmitting terminal is ustomer premises access equipment, and described receiving terminal is network side equipment; Perhaps
Described transmitting terminal is network side equipment, and described receiving terminal is ustomer premises access equipment.
On the other hand, provide a kind of transmitting terminal of data, it is characterized in that, comprising:
Acquisition module is used for obtaining the interior transmitting terminal of the first duration to the current available link bandwidth of the direction of receiving terminal;
Determination module is used for according to described current available link bandwidth, determines that the interior described transmitting terminal of next duration of described the first duration sends the speed of packet to described receiving terminal;
Sending module is used for sending packet to described receiving terminal according to described speed in described next duration.
Described acquisition module comprises:
Obtain submodule, be used for obtaining receiving terminal to the second link average bandwidth of the direction of transmitting terminal and transmitting terminal to the ratio between the first link average bandwidth of the direction of receiving terminal;
The first calculating sub module be used for to be calculated the second bit number of the affirmation packet that described transmitting terminal in the first bit number of the packet that described transmitting terminal in the first duration sends to described receiving terminal and described the first duration receives from described receiving terminal;
The second calculating sub module is used for according to described ratio, described the first bit number, described the second bit number, calculates the interior transmitting terminal of described the first duration to the current available link bandwidth of the direction of receiving terminal.
Described the second calculating sub module is calculated according to following formula:
Described the first duration sends the second duration between constantly that first o'clock of first packet is carved into the affirmation bag that receives last packet when being current transmission predetermined quantity packet;
Perhaps, described the first duration is to send the second duration between constantly that first o'clock of first packet is carved into the affirmation bag that receives last packet in current at least one transmission window.
On the other hand, provide a kind of communication system of data, comprising: transmitting terminal and receiving terminal;
Described transmitting terminal is used for, and obtains the interior transmitting terminal of the first duration to the current available link bandwidth of the direction of receiving terminal; According to described current available link bandwidth, determine that the interior described transmitting terminal of next duration of described the first duration sends the speed of packet to described receiving terminal; In described next duration, send packet to described receiving terminal according to described speed.
Described transmitting terminal is ustomer premises access equipment, and described receiving terminal is network side equipment; Perhaps
Described transmitting terminal is network side equipment, and described receiving terminal is ustomer premises access equipment.
Described transmitting terminal obtains transmitting terminal in the first duration and is specially to the current available link bandwidth of the direction of receiving terminal: obtain receiving terminal to the second link average bandwidth of the direction of transmitting terminal and transmitting terminal to the ratio between the first link average bandwidth of the direction of receiving terminal; Calculate the second bit number of the affirmation packet that described transmitting terminal in the first bit number of the packet that described transmitting terminal in the first duration sends to described receiving terminal and described the first duration receives from described receiving terminal; According to described ratio, described the first bit number, described the second bit number, calculate the interior transmitting terminal of described the first duration to the current available link bandwidth of the direction of receiving terminal.
Described transmitting terminal is according to described ratio, described the first bit number, described the second bit number, and the transmitting terminal that calculates in described the first duration calculates according to following formula to the current available link bandwidth of the direction of receiving terminal:
Embodiments of the invention have following beneficial effect:
In the such scheme, according to the current available link bandwidth of transmitting terminal in the first duration to the direction of receiving terminal, determine that the interior described transmitting terminal of next duration of described the first duration sends the speed of packet to described receiving terminal; Described transmitting terminal sends packet to described receiving terminal according to described speed in described next duration, therefore, the transmission rate that transmitting terminal can be complementary with the current available bandwidth with link sends data, has improved the data transmission efficiency of network.
Description of drawings
Fig. 1 is the schematic flow sheet of an embodiment of the sending method of data of the present invention;
Fig. 2 is the specific implementation schematic flow sheet of step 11 in the sending method of data shown in Figure 1;
Fig. 3 is the structural representation of an embodiment of the transmitting apparatus of data of the present invention;
Fig. 4 is the structural representation of an embodiment of the communication system of data of the present invention;
Fig. 5 is the structural representation of wireless internet network of application scenarios of the communication system of data of the present invention;
Fig. 6 is the schematic flow sheet of application scenarios of the sending method of data of the present invention.
Embodiment
For technical problem, technical scheme and advantage that embodiments of the invention will be solved is clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Understand the present invention for more convenient, below simply introduce technology related to the present invention.
(1) relation of bandwidth control and avoid congestion: the basic goal of congestion control is to guarantee fairness and the stability of network traffics, and the direct effect of congestion control is reflected on the effective transmission speed of data; Otherwise, also can reduce congested to the good control of message transmission rate as far as possible.
(2) ACK confirms bag: take Transmission Control Protocol as example, be the affirmation sign in the tcp data bag stem, the TCP message that has received is confirmed.In ICP/IP protocol, if the recipient successfully receives data, reply to ack signal of transmit leg by the recipient so.Usually ack signal has own set form, length scale, and its form depends on the procotol of taking, and in the different agreements, ack signal is different.When transmit leg receives ack signal, just can send next data.If transmit leg is not received ack signal, transmit leg may be retransmitted current packet so, also may stop to transmit data.Concrete condition depends on the procotol that adopts.
Below introduce specific embodiments of the invention.
As shown in Figure 1, the embodiment for the sending method of a kind of data of the present invention comprises:
In above-described embodiment, transmitting terminal sends data with the transmission rate that the current available bandwidth with link is complementary, and has improved the data transmission efficiency of network, allows user's perception, the stability of network and the utilance of bandwidth reach a preferably balance.
For example, take the first duration be when send in the previous transmission window first packet first the time be carved into the second duration between constantly of the affirmation bag that receives last packet as example, in current transmission window, send four packets, when the numeric ratio that gets access to current available link bandwidth is larger, then send eight packets at next transmission window; Perhaps, in current transmission window, send four packets, when the numeric ratio that gets access to current available link bandwidth hour, then send two packets at next transmission window.
Wherein, as shown in Figure 2, step 11 comprises:
In above-described embodiment, described transmitting terminal is ustomer premises access equipment, and described receiving terminal is network side equipment; Perhaps described transmitting terminal is network side equipment, and described receiving terminal is ustomer premises access equipment.But described method can be applied to be not limited to Transmission Control Protocol, also can be applied to have send confirm to wrap other regular agreements.
As shown in Figure 3, the transmitting terminal for data of the present invention comprises:
Sending module 33 is used for sending packet to described receiving terminal according to described speed in described next duration.
Described determination module 31 comprises:
Obtain submodule, be used for obtaining receiving terminal to the second link average bandwidth of the direction of transmitting terminal and transmitting terminal to the ratio between the first link average bandwidth of the direction of receiving terminal;
The first calculating sub module be used for to be calculated the second bit number of the affirmation packet that described transmitting terminal in the first bit number of the packet that described transmitting terminal in the first duration sends to described receiving terminal and described the first duration receives from described receiving terminal;
The second calculating sub module is used for according to described ratio, described the first bit number, described the second bit number, calculates the interior transmitting terminal of described the first duration to the current available link bandwidth of the direction of receiving terminal.
Described the second calculating sub module is calculated according to following formula:
Described the first duration sends the second duration between constantly that first o'clock of first packet is carved into the affirmation bag that receives last packet when being current transmission predetermined quantity packet;
Perhaps, described the first duration is to send the second duration between constantly that first o'clock of first packet is carved into the affirmation bag that receives last packet in current at least one transmission window.
Wherein, described transmitting terminal is ustomer premises access equipment, and described receiving terminal is network side equipment; Perhaps described transmitting terminal is network side equipment, and described receiving terminal is ustomer premises access equipment.
As shown in Figure 4, the communication system for a kind of data shown in the present comprises: transmitting terminal 41 and receiving terminal 42;
Described transmitting terminal 41 is used for, and obtains the interior transmitting terminal of the first duration to the current available link bandwidth of the direction of receiving terminal 42; According to described current available link bandwidth, determine that the interior described transmitting terminal 41 of next duration of described the first duration sends the speed of packets to described receiving terminal 42; Described transmitting terminal 41 sends packet to described receiving terminal 42 according to described speed in described next duration.
Described transmitting terminal 41 is ustomer premises access equipment, and described receiving terminal 42 is network side equipment; Perhaps
Described transmitting terminal 41 is network side equipment, and described receiving terminal 42 is ustomer premises access equipment.
Application scenarios of the present invention is below described.Application scenarios of the present invention is as follows:
(1) applicable network scenarios: the mobile internet that is applicable to all standard systems, GSM (Global System of Mobile communication for example, global system for mobile communications), CDMA (Code Division Multiple Access, code division multiple access) 1X, TC-SCDMA, WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)), CDMA2000 etc.The present invention can improve the data transmission efficiency of the Radio Link of optimised network.
(2) applicable radio transmission scene: the radio transmission scene that can be used for the city, the wireless signal in city is subjected to the impact of geographical and floor circumstance complication degree larger, mainly due to the building signal reflex, cause multipath effect, perhaps the scene signals interference source is more, the big rise and fall of transmission of wireless signals quality.The present invention can be dynamically according to the changing condition of Radio Link, real-time estimation goes out reliable Radio Link available bandwidth, and TCP (the Transmission Control Protocol of adjustment wireless Internet, transmission control protocol) transmission policy of agreement such as, so that transmitting terminal is complementary to the Packet Generation quantity of receiving terminal and the real-time bandwidth of frequency and Radio Link, thereby promote the data transmission efficiency of Radio Link.
(3) be applicable to cable network.
(4) be applicable to Transmission Control Protocol etc. and have the optimization improvement that sends the agreement of confirming machine contracting system.
The invention provides a kind of sending method, device and system of data.Take based on the tcp protocol optimization technology of wireless network as example, in this application scenarios, by the available bandwidth of dynamic estimation Radio Link, and dynamically adjust transmitting terminal sends transmission rate from packet to receiving terminal, it is congested to alleviate TCP, improves the data transmission efficiency of wireless network.Bandwidth control is by the Transmission Control Protocol after improving, and allows the data source pre-estimate the available transmission bandwidth of mobile Internet, thereby sends packet with suitable speed to receiving terminal.Estimate by the real-time available bandwidth to the mobile Internet downlink or uplink, dynamically adjust the speed that transmitting terminal sends packet thereby arrive, with the purpose of matching network real-time bandwidth.The evaluation method of the real-time available bandwidth of Radio Link is proposed among the present invention, and provided wireless network tcp protocol optimization workflow based on this estimation result, by uplink downlink bandwidth ratio dynamic calculation available bandwidth, adopt the circulation aero mode, to existing network upstream and downstream bandwidth real-time statistics, and calculating available bandwidth, thereby control TCP throughput.By Dynamic Acquisition up-downgoing wireless link bandwidth, calculate dynamically current wireless network availability bandwidth value, adjust the data transmission rate to receiving terminal, change under the complicated scene for wireless network, the real-time dynamic monitoring available bandwidth, can effectively along with wireless channel conditions sends packet with suitable speed to receiving terminal, realize improving the purpose of wireless network data efficiency of transmission.Algorithm of the present invention is comparatively easy according to obtaining, and obtains the downlink or uplink link bandwidth at wireless network network element, core network element or user terminal, and obtain manner is simple, can calculate dynamic, easy, reliably the current wireless available bandwidth value.
Fig. 5 is the structural representation of wireless internet network.Fig. 6 is that the optimization of application scenarios of the present invention is based on the flow chart of the Transmission Control Protocol of wireless network.Described method comprises:
Step 1 is obtained the ratio k of the uplink downlink average bandwidth of wireless network, and namely above-mentioned receiving terminal is to the second link average bandwidth of the direction of transmitting terminal and transmitting terminal to the ratio between the first link average bandwidth of the direction of receiving terminal.Wherein, the ratio k of the uplink downlink average bandwidth of wireless network is set by the network management personnel.The k value of the wireless network of different systems is different, can obtain from the daily radio network optimization test of mobile operator.The present invention can make Radio Link real-time bandwidth result of calculation more reliable, thereby can carry out more stable adjustment to the follow-up sending strategy of tcp data bag according to more constant up and down link bandwidth ratio k.
Step 2, the bit number of current link accelerating module (being equivalent to above-mentioned acquisition module) sending and receiving packet in the calculating RTT (round-trip delay).
RTT can for accelerating module in a TCP transmission window, send first packet to receive last ACK confirm bag between duration, RTT is variable, namely the first above-mentioned duration.
Step 3 is calculated the current real-time available bandwidth of Radio Link (the real-time available bandwidth of mobile Internet), namely above-mentioned transmitting terminal in direction first duration of receiving terminal current available link bandwidth.Computing formula is as follows:
Parameter in the computing formula is obtained by step 1,2, can according to the variation of wireless channel conditions, upgrade dynamically result of calculation.
Step 4 according to real-time bandwidth result of calculation (the real-time available bandwidth of Radio Link), is adjusted the Transmission Control Protocol strategy, that is to say, changes transmitting terminal to quantity and/or the frequency of receiving terminal transmission packet, with the coupling wireless bandwidth.
Said process is cyclic process, constantly carries out real-time dynamic algorithm and estimates.
The derivation of above-mentioned formula is below described.
In the above-mentioned steps 3, no matter how dynamic change of Radio Link, the ratio k of the uplink downlink average bandwidth of same wireless network is all more constant.Therefore, when evaluating wireless link upstream and downstream bandwidth, when introducing the k value, result of calculation is comparatively reliable.
The method can be used for up link and down link.Accordingly, the Radio Link real-time bandwidth can be the up real-time bandwidth of Radio Link or down link real-time bandwidth.According to following formula (1)～formula (4) combined calculation, obtain the computing formula (5) of the real-time available bandwidth of up-downgoing (above-mentioned current available link bandwidth) of Radio Link.
... formula (1)
... formula (2)
When calculating the radio downlink real-time bandwidth,
When calculating the radio up-line real-time bandwidth,
... formula (3)
t
1+t
2＝RTT
... formula (4)
... formula (5)
Algorithm parameter is explained as follows:
K: if the real-time descending available bandwidth of calculating Radio Link, then k=wireless network up link average bandwidth/average downlink bandwidth, at this moment 0＜k＜1; If the real-time up available bandwidth of calculating Radio Link, then k=wireless network average downlink bandwidth/up link average bandwidth, at this moment k＞1.
RTT: can send first packet to interval two-way time that receives last ACK affirmation bag in a TCP transmission window for accelerating module, RTT is variable.
In the above-mentioned application scenarios, accelerating module can be arranged on wireless network network element, core network element or user terminal place, and particular location is decided according to the scope of required optimization acceleration.
If accelerating module (being similar to the template of obtaining in above-described embodiment) is arranged on wireless network network element place, then can carry out to the base station range that this wireless network network element is administered the tcp protocol optimization of wireless network down link; If accelerating module is arranged on the core network element place, the tcp protocol optimization that the wireless network network element that then can administer this core network element and jurisdiction base station range thereof carry out the wireless network down link.That is to say, for down wireless link, by being arranged on the accelerating module at wireless network network element place, estimate the real-time available bandwidth of mobile Internet (metropolitan area mobile Internet), also can carry out by the accelerating module that is arranged on the core network element place estimation of available bandwidth of the larger wide area of coverage, thereby dynamically adjust the Transmission Control Protocol strategy, and send downlink data packet with suitable speed to receiving terminal (user's side).
If accelerating module is arranged on the user terminal place, then can carry out to user terminal the tcp protocol optimization of wireless network up link.That is to say, for the up-link wireless link, go out the available bandwidth of real-time mobile Internet by the accelerating module dynamic estimation that is arranged on the user terminal place, thereby send the upstream data bag with suitable speed to receiving terminal (network side).
Take TCP as example, existing tcp protocol optimization major part is for cable network, but Wireless Mobile Internet and conventional internet have following difference: (1) based on characteristics such as the startup of the standard Transmission Control Protocol of conventional internet, retransmission mechanism, lower in bandwidth, easily interrupt and the wireless network shaken in will cause the utilance of bandwidth lower.(2) the relative conventional internet BER of Wireless Mobile Internet (bit error rate (BER)) is high, bandwidth is low, be limited by rare frequency resource.(3) wireless transmission be subjected to cover and network quality affects unstable, be prone to network timeout and may occur and use interruption, user's experience effect is poor.Therefore, when the present invention is applied to wireless network, having solved traditional TCP etc. has and sends the host-host protocol of confirming machine contracting system and use the problem of bringing at the Wireless Mobile Internet of complexity, can effectively guarantee fairness and the stability of network traffics, bring higher user awareness to the user, improved the data transmission efficiency of wireless network.
The present invention is by the real-time available bandwidth of accelerating module dynamic estimation wireless network, and real-time according to the residing wireless environment variation of user and corresponding adjustment Transmission Control Protocol strategy, change transmitting terminal to Packet Generation quantity and the frequency of receiving terminal, make it to be complementary with the real-time bandwidth of Radio Link, thereby promote wireless network bandwidth utilance and stable, lifting user awareness.And, by the good control to message transmission rate, can reduce congestedly as far as possible, guarantee balance and the best applications of network traffics.Algorithmic formula of the present invention is according to the bandwidth ratio k of uplink downlink, and algorithm parameter obtains easier, and is low to the performance requirement of accelerating module, practices to have practicality and application prospect.
One of ordinary skill in the art will appreciate that, realize that all or part of step in above-described embodiment method is to come the relevant hardware of instruction to finish by program, described program can be stored in the computer read/write memory medium, this program is when carrying out, comprise the step such as above-mentioned embodiment of the method, described storage medium, as: magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or at random store-memory body (Random Access Memory, RAM) etc.
The above is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (13)
1. the sending method of data is characterized in that, comprising:
Obtain the interior transmitting terminal of the first duration to the current available link bandwidth of the direction of receiving terminal;
According to described current available link bandwidth, determine that the interior described transmitting terminal of next duration of described the first duration sends the speed of packet to described receiving terminal;
Described transmitting terminal sends packet to described receiving terminal according to described speed in described next duration.
2. the sending method of data according to claim 1 is characterized in that, describedly obtains transmitting terminal in the first duration and comprises to the step of the current available link bandwidth of the direction of receiving terminal:
Obtain receiving terminal to the second link average bandwidth of the direction of transmitting terminal and transmitting terminal to the ratio between the first link average bandwidth of the direction of receiving terminal;
Calculate the second bit number of the affirmation packet that described transmitting terminal in the first bit number of the packet that described transmitting terminal in the first duration sends to described receiving terminal and described the first duration receives from described receiving terminal;
According to described ratio, described the first bit number, described the second bit number, calculate the interior transmitting terminal of described the first duration to the current available link bandwidth of the direction of receiving terminal.
3. the sending method of data according to claim 2 is characterized in that,
Described the first duration sends the second duration between constantly that first o'clock of first packet is carved into the affirmation bag that receives last packet when being current transmission predetermined quantity packet;
Perhaps, described the first duration is to send the second duration between constantly that first o'clock of first packet is carved into the affirmation bag that receives last packet in current at least one transmission window.
4. the sending method of data according to claim 2, it is characterized in that, described according to described ratio, described the first bit number, described the second bit number, the transmitting terminal that calculates in described the first duration calculates according to following formula to the step of the current available link bandwidth of the direction of receiving terminal:
5. the sending method of data according to claim 1 is characterized in that,
Described transmitting terminal is ustomer premises access equipment, and described receiving terminal is network side equipment; Perhaps
Described transmitting terminal is network side equipment, and described receiving terminal is ustomer premises access equipment.
6. the transmitting terminal of data is characterized in that, comprising:
Acquisition module is used for obtaining the interior transmitting terminal of the first duration to the current available link bandwidth of the direction of receiving terminal;
Determination module is used for according to described current available link bandwidth, determines that the interior described transmitting terminal of next duration of described the first duration sends the speed of packet to described receiving terminal;
Sending module is used for sending packet to described receiving terminal according to described speed in described next duration.
7. the transmitting terminal of data according to claim 6 is characterized in that, described acquisition module comprises:
Obtain submodule, be used for obtaining receiving terminal to the second link average bandwidth of the direction of transmitting terminal and transmitting terminal to the ratio between the first link average bandwidth of the direction of receiving terminal;
The first calculating sub module be used for to be calculated the second bit number of the affirmation packet that described transmitting terminal in the first bit number of the packet that described transmitting terminal in the first duration sends to described receiving terminal and described the first duration receives from described receiving terminal;
The second calculating sub module is used for according to described ratio, described the first bit number, described the second bit number, calculates the interior transmitting terminal of described the first duration to the current available link bandwidth of the direction of receiving terminal.
8. the transmitting terminal of data according to claim 7 is characterized in that, described the second calculating sub module is calculated according to following formula:
9. the transmitting terminal of data according to claim 7 is characterized in that,
Described the first duration sends the second duration between constantly that first o'clock of first packet is carved into the affirmation bag that receives last packet when being current transmission predetermined quantity packet;
Perhaps, described the first duration is to send the second duration between constantly that first o'clock of first packet is carved into the affirmation bag that receives last packet in current at least one transmission window.
10. the communication system of data is characterized in that, comprising: transmitting terminal and receiving terminal;
Described transmitting terminal is used for, and obtains the interior transmitting terminal of the first duration to the current available link bandwidth of the direction of receiving terminal; According to described current available link bandwidth, determine that the interior described transmitting terminal of next duration of described the first duration sends the speed of packet to described receiving terminal; In described next duration, send packet to described receiving terminal according to described speed.
11. the communication system of data according to claim 10 is characterized in that,
Described transmitting terminal is ustomer premises access equipment, and described receiving terminal is network side equipment; Perhaps
Described transmitting terminal is network side equipment, and described receiving terminal is ustomer premises access equipment.
12. the communication system of data according to claim 10 is characterized in that, described transmitting terminal obtains transmitting terminal in the first duration and is specially to the current available link bandwidth of the direction of receiving terminal:
Obtain receiving terminal to the second link average bandwidth of the direction of transmitting terminal and transmitting terminal to the ratio between the first link average bandwidth of the direction of receiving terminal; Calculate the second bit number of the affirmation packet that described transmitting terminal in the first bit number of the packet that described transmitting terminal in the first duration sends to described receiving terminal and described the first duration receives from described receiving terminal; According to described ratio, described the first bit number, described the second bit number, calculate the interior transmitting terminal of described the first duration to the current available link bandwidth of the direction of receiving terminal.
13. the communication system of data according to claim 12, it is characterized in that, described transmitting terminal is according to described ratio, described the first bit number, described the second bit number, and the transmitting terminal that calculates in described the first duration is according to following formula calculating to the current available link bandwidth of the direction of receiving terminal:
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| CN104811998A (en) * | 2014-01-27 | 2015-07-29 | 华为技术有限公司 | Method for controlling adjustment of transmission control protocol (TCP) window and wireless access point |
| CN104811998B (en) * | 2014-01-27 | 2018-08-21 | 华为技术有限公司 | A kind of method and wireless access point of the adjustment of controlling transmission control protocol window |
| CN106416358A (en) * | 2014-10-13 | 2017-02-15 | 华为技术有限公司 | Method, apparatus, and terminal for controlling transmission frequency of broadcast data packet |
| CN106416358B (en) * | 2014-10-13 | 2019-10-22 | 华为技术有限公司 | Control the method, apparatus and terminal of the transmission frequency of broadcast data packet |
| CN109951398A (en) * | 2019-03-22 | 2019-06-28 | 腾讯科技（深圳）有限公司 | Data transmission method for uplink, device and computer equipment |
| CN109951398B (en) * | 2019-03-22 | 2021-09-17 | 腾讯科技（深圳）有限公司 | Data sending method and device and computer equipment |
| CN115913462A (en) * | 2022-11-09 | 2023-04-04 | 中国人民解放军32039部队 | Network data sending method and data sending module based on pre-planning |
| CN115913462B (en) * | 2022-11-09 | 2023-08-08 | 中国人民解放军32039部队 | Network data transmission method and data transmission module based on advance planning |
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