CN104243090B - A kind of transmission rate method of adjustment and equipment fed back based on wireless channel - Google Patents
A kind of transmission rate method of adjustment and equipment fed back based on wireless channel Download PDFInfo
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Abstract
The invention discloses a kind of transmission rate method of adjustment and equipment fed back based on wireless channel, this method includes：TCP connections agent entity obtains radio channel status information；TCP connection agent entitys adjust Retransmission timeout time parameter RTO according to radio channel status information, reduce the data transmission rate of this TCP connection agent entitys, and notify to reduce data transmission rate to the equipment that this TCP connections agent entity sends data.In the embodiment of the present invention, TCP connections agent entity can reasonably adjust transmission rate based on radio channel status information, the channel resource after the switching using modulating mode efficient in time, so as to avoid the waste of interface-free resources.Further, the blind search shake of the TCP congestion controls caused by wireless channel can be avoided unstable, it is to avoid the phenomenon such as Retransmission timeout and queue congestion, so as to improve wireless data service Consumer's Experience.
Description
Technical field
The present invention relates to communication technical field, adjusted more particularly, to a kind of based on the transmission rate that wireless channel feeds back
Adjusting method and equipment.
Background technology
TCP（Transmission Control Protocol, transmission control protocol）Numbered by data sectional, transmission,
Receive confirmations, Retransmission timeout, out of order restructuring, abandon duplicate packages, flow control etc. mechanism to application layer offer it is connection-oriented, can
The byte stream service leaned on, and use the reliability transmission confirmed with Retransmission timeout mechanism guarantee data.Further, when in network
During in the presence of excessive message, network can be caused to occur congestion, and TCP congestion control depends on congestion window（cwnd）, separately
The reception window of one opposite end notice（rwnd）For flow control.Wherein, the size of window value represents what can be sent,
But without receiving ACK（Certainly determine）Maximum data message segment, it is clear that window is bigger, then data transmission rate is faster,
But also more it is likely to result in network congestion.Therefore, TCP congestion avoidance algorithm seeks to be weighed between both, makes
Network throughput is obtained to maximize and do not produce congestion.
Current wireless channel Modulation and Coding Scheme is independently responsible for by base station equipment, TCP data communicating pair（Transport layer and net
Network layers）Change for physical layer channel pattern changes and ignorant with the actual data transfer handling capacity that may be brought.Wherein,
From the point of view of physical layer, when base station equipment switches transmission mode, significant changes occur for message transmission rate, and wireless network is supported
Modulation coding mode is more, and difference is bigger.From the point of view of transport layer, RTT（Round Trip Time, two-way two-way time）With biography
Defeated speed changes, and transmission behavior mismatch occurs with the characteristic of channel, and because TCP is dependent on ACK detection packet losses or time delay, transmission
Layer sends behavior adjustment and channel adjustment existence time is poor, so as to easily cause congestion and performance loss.
When being switched to high-rate mode from low rate, passed because TCP is connected to the conservative channel of souning out of congestion avoidance phase
The defeated upper limit and cause channel utilization low；When being switched to low rate mode from high-speed, because TCP linkup transmits window is adjusted
It is whole to cause congestion not in time, and along with the re-transmission of a large amount of lost data packets.
In summary, in the prior art, the false triggering of network congestion is on the one hand likely to result in, actual transmission rate occurs not
Necessary frequent shake；On the other hand send the one-side blindness of window to shrink, cause actual transmission rate to occur unnecessary
Oscillation on large scale, causes the significant wastage of originally rare interface-free resources.
The content of the invention
The embodiment of the present invention provides a kind of transmission rate method of adjustment and equipment fed back based on wireless channel, with rational
Transmission rate is adjusted, and the waste of interface-free resources can be avoided.
In order to achieve the above object, the embodiment of the present invention provides a kind of transmission rate adjustment side fed back based on wireless channel
Method, including：
Transmission control protocol TCP connection agent entity obtains radio channel status information；
The TCP connection agent entitys adjust Retransmission timeout time parameter RTO, drop according to the radio channel status information
The data transmission rate of low TCP connection agent entity, and notify to send the equipment reduction of data to this TCP connections agent entity
Data transmission rate.
The embodiment of the present invention provides a kind of transmission control protocol TCP connection agent entity, including：
Acquisition module, for obtaining radio channel status information；
Processing module, for adjusting Retransmission timeout time parameter RTO according to the radio channel status information, reduction is originally
The data transmission rate of TCP connection agent entitys, and notify to reduce data to the equipment that this TCP connections agent entity sends data
Transmission rate.
Compared with prior art, the embodiment of the present invention at least has advantages below：In the embodiment of the present invention, TCP connection generations
Reason entity can reasonably adjust transmission rate based on radio channel status information, and efficiently utilize modulating mode switching in time
Channel resource afterwards, so as to avoid the waste of interface-free resources.Further, caused by wireless channel can be avoided unstable
TCP congestion controls blind search shake, it is to avoid the phenomenon such as Retransmission timeout and queue congestion, so as to improve wireless data service
Consumer's Experience.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the accompanying drawing used required in being described below to embodiment
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the application scenarios schematic diagram of the embodiment of the present invention；
Fig. 2 is that a kind of transmission rate method of adjustment flow fed back based on wireless channel that the embodiment of the present invention one is provided is shown
It is intended to；
Fig. 3 is a kind of structural representation for TCP connections agent entity that the embodiment of the present invention two is provided.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described, shown
So, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of protection of the invention.
Embodiment one
For problems of the prior art, the embodiment of the present invention one provides a kind of transmission fed back based on wireless channel
Rate adjusting method, using Fig. 1 as the application scenarios schematic diagram of the embodiment of the present invention, this method can apply to include terminal device
（Such as mobile terminal）, base station equipment, TCP connections agent entity, gateway device（Such as it is grouped domain gateway）In the network of server.
Wherein, the TCP connection agent entitys can be integrated on current base station equipment or gateway device, connected in Fig. 1 with TCP
Agent entity is illustrated exemplified by being integrated on gateway device.In addition, correspondence access server in need on the terminal device
Browser, the server is corresponding services sites, and to that should have WEB（Internet）.
Under above-mentioned application scenarios, as shown in Fig. 2 this method may comprise steps of：
Step 201, TCP connections agent entity obtains radio channel status information.
In the embodiment of the present invention, TCP connections agent entity obtain radio channel status information, be specifically including but not limited to as
Under type：TCP connections agent entity receives the radio channel status information that base station equipment is reported.Wherein, base station equipment is reported
Radio channel status information is specifically as follows interface-free resources scheduling result and modulating-coding pattern；Or, base station equipment is reported
Radio channel status information be specifically as follows based on interface-free resources scheduling result and modulating-coding pattern determination data pass
Defeated bit rate；Or, the radio channel status information that base station equipment is reported is specifically as follows small area jam configured information；Or,
The radio channel status information that base station equipment is reported is specifically as follows channel bearing information.
Wherein, the data transfer bit rate is normalization channel speed；The small area jam configured information includes but is not limited to
Congestion whether, the information such as congestion level；The channel bearing information include but is not limited to radio bearer whether activate, symbols speed
The information such as rate, modulating-coding pattern or exponent number, normalization channel speed.
Step 202, TCP connections agent entity is according to radio channel status information（Interface-free resources scheduling result and modulation are compiled
Pattern；Or data transfer bit rate；Or small area jam configured information；Or channel bearing information）Adjust Retransmission timeout time ginseng
Number RTO（Retransmission Time Out, such as Retransmission timeout time, increase RT（Retransmission Timer, are retransmitted
Timer）RTO）, reduce the data transmission rate of this TCP connection agent entitys（TCP connection agent entitys are such as reduced to base station
Equipment sends the data transmission rate of data）, and notify to send the equipment reduction data hair of data to this TCP connections agent entity
Transmission rate（Server is such as notified to reduce the data transmission rate for sending data to TCP connections agent entity）.
In the embodiment of the present invention, TCP connection agent entitys adjust Retransmission timeout time ginseng according to radio channel status information
Number RTO, reduces the data transmission rate of this TCP connection agent entitys, and notifies to send data to this TCP connections agent entity
Equipment reduces the process of data transmission rate, is specifically including but not limited to following manner：TCP connection agent entitys are according to wireless
Channel condition information determines that valid data transmission bit rate of eating dishes without rice or wine changes（Such as：Significant changes）When, TCP connections agency is real
Body needs to increase RT（The RT is to have issued/the RT of downlink data to be issued）RTO, to reduce Retransmission timeout probability；In addition, should
TCP connection agent entitys also need to reduce the data transmission rate of this TCP connection agent entitys, to avoid causing base station equipment
Down queue congestion；In addition, the TCP connection agent entitys also need to notify to send setting for data to this TCP connections agent entity
It is standby（Server）Data transmission rate is reduced, to avoid due to the data of link between server that locally buffered congestion is caused
Retransmit and window search.
In the specific implementation of the embodiment of the present invention, when radio channel status information be interface-free resources scheduling result with
And during modulating-coding pattern, TCP connections agent entity can be first true based on interface-free resources scheduling result and modulating-coding pattern
Whether fixed number is become based on the data transfer bit rate valid data transmission bit rate that determines to eat dishes without rice or wine according to transmission bit rate afterwards
Change；When radio channel status information is the data transfer bit based on interface-free resources scheduling result and the determination of modulating-coding pattern
During rate, TCP connection agent entitys can be directly based upon data transfer bit rate determine eat dishes without rice or wine valid data transmission bit rate whether
Change.
In a kind of preferred embodiment of the embodiment of the present invention, TCP connection agent entitys are according to radio channel status information
It is determined that valid data transmission bit rate of eating dishes without rice or wine changes, following manner is specifically including but not limited to：TCP connection agent entity roots
The radio channel status information received according to the last time determines corresponding data transfer bit rate more than preset first threshold value, and according to
When this radio channel status information received determines that corresponding data transfer bit rate is less than default Second Threshold, it is determined that eating dishes without rice or wine
Valid data transmission bit rate changes（Such as：Significant changes）, and now data transfer bit rate is switched to from High Data Rate
Low data rate.
Wherein, the preset first threshold value and default Second Threshold can carry out any setting according to practical experience value,
And the preset first threshold value needs to be more than the default Second Threshold.
In the specific implementation of the embodiment of the present invention, when radio channel status information is small area jam configured information
When, TCP connections agent entity can be based on small area jam configured information（As congestion whether, congestion level）And configurable turn
Change rule list（It can be configured according to practical experience value, the data transmission ratio for identifying different districts congested instruction information
Special rate situation）It is determined that whether valid data transmission bit rate of eating dishes without rice or wine changes；When radio channel status information is channel bearing
During information, TCP connections agent entity can first be based on channel bearing information（Such as symbols speed, modulating-coding pattern or rank
Number）Data transfer bit rate is determined, determines whether valid data transmission bit rate of eating dishes without rice or wine is sent out based on data transfer bit rate afterwards
Changing；Or, when radio channel status information is channel bearing information, TCP connection agent entitys can be directly based upon letter
Road carrying information（Whether such as radio bearer activates, equivalent to switch）It is determined that whether valid data transmission bit rate of eating dishes without rice or wine becomes
Change.
Current foundation RTT averages and variance survey calculation RTO, including its initial setting up, dynamic algorithm, bound threshold value
Deng；Setting for RT is provided as follows with using：TCP data transmitting terminal each sends datagram according to currently calculating
RTO sets RT；RT is closed if all transmission data are identified；Otherwise new data confirmation is received, RT is reseted according to RTO；
It was found that after RT time-out, re-transmission is unidentified most to send message already, and sets RTO to double, and the process is repeated, until message weight
Pass successfully.
In order to avoid in TCP downlink data Retransmission timeouts, the embodiment of the present invention in radio channel state handoff procedure, TCP
Connection agent entity obtains the radio channel status information that base station equipment is reported（It is sealed by tunnel protocol GTP-U or IP agreement
Dress）, and utilize radio channel status information（It is the corresponding radio channel status information of TCP data stream that base station equipment is monitored）
Reset RTO.Specifically, TCP connection agent entitys determine valid data transmission rate hair of eating dishes without rice or wine using radio channel status information
Raw significant changes（Particularly low data rate is switched to from High Data Rate）When, as needed adjustment sent but it is still unacknowledged under
The RT of row TCP data message RTO, and follow-up RTT dynamic calculations implementation Process is intervened.
In the embodiment of the present invention, TCP connections agent entity increase RT RTO process（I.e. the adjustment Retransmission timeout time joins
Number RTO process）, it is specifically including but not limited to following manner：
Step 1, TCP connection agent entitys are receiving radio channel status information（The modulating-coding reported such as base station equipment
The handover information of pattern）When, record the first RTO at current time（The parameter RTO of i.e. current RTT estimations）And current time
Send but still unacknowledged descending TCP data sequence number x.
If step 2, now RT have been started up, TCP connection agent entitys reset the 2nd RTO and are：First RTO*
（Max { 1, m/m1}）；Wherein, m/m1For channel valid bit speed（That is normalization data rate）The ratio between；Further, channel is worked as
When coding exponent number changes, m/m1=log2（s/s1）, and s/s1For the exponent number under different modulating coding mode per symbols
The ratio between.
Step 3, TCP connections agent entity are determined after radio channel status information is received, and are receiving covering x's
Before ACK, Retransmission timeout time parameter RTO is adjusted（3rd RTO）For the 2nd RTO.
Step 4, TCP connection agent entitys are after covering x ACK is received, with the RTO after increase（3rd RTO）To be first
Initial value, recovers RTT dynamic evaluation calculating process.
The thought of current TCP congestion controls is that continuous adjustment sends window size, and is combined with transmitting end to end instead
Feedback（Packet loss, time delay etc.）Current network path status is soundd out and matched repeatedly to information, and it adjusts the cycle using RTT as granularity, in real time
Property is inadequate.The error that the detection presence of one side congestion can not overcome, the medium of wireless channel determines that its link is highly prone to
, there is interim packet loss and delay variation in interference, therefore, it is difficult to the accuracy that guaranteed rate adjusts opportunity, causes efficiency to decline.Separately
On the one hand, there is blindness in rate-matched, due to lacking the priori to the transmission performance after state change, TCP hairs
Sending end can only rule of thumb be transmitted speed adjust, ensure to release congestion as early as possible as cost to sacrifice efficiency of transmission.
In order to solve the above problems, scene is accessed by Cellular Networks packet domain for terminal device, towards wireless channel shape
In state handoff scenario, the embodiment of the present invention, by the way that in packet domain gateway deployment TCP connection agent entitys, channel shape can be shortened
State is fed back and response delay end to end when switching（Shorten RTT）, improve the promptness of data transfer adjustment reaction；Further
, TCP connections agent entity obtains the radio channel status information that base station equipment is reported（It passes through tunnel protocol GTP-U or IP
Protocol encapsulation）, and utilize radio channel status information（It is the corresponding wireless channel shape of TCP data stream that base station equipment is monitored
State information）The data transmission rate of this TCP connection agent entitys is reduced, and notifies to send data to this TCP connections agent entity
Equipment reduction data transmission rate, so as to avoid congestion, improve efficiency.
In the embodiment of the present invention, TCP connection agent entitys reduce the data transmission rate of this TCP connection agent entitys, and
Notify the equipment that data are sent to this TCP connections agent entity（Such as server）Reduce the process of data transmission rate, specific bag
Include but be not limited to following manner：
Mode one, the down buffer storage and rate-matched for reusing window mode；Comprise the following steps under the manner：
Step 1, TCP connection agent entitys are receiving radio channel status information（The modulating-coding reported such as base station equipment
The handover information of pattern）When, the terminal device at record current time connects downlink congestion window value cwnd and current time
Terminal device receive window value rwnd.
Step 2, TCP connection agent entitys reset transmission window swnd：min{cwnd1, rwnd }.
Wherein, cwnd1=max { iwnd, cwnd*（m/m1）, the iwnd is the initial transmission window of this TCP connection agent entitys
Mouthful；In addition, m/m1For channel valid bit speed（That is normalization data rate）The ratio between；Further, when channel coding exponent number is sent out
During changing, m/m1=log2（s/s1）, and s/s1For the ratio between exponent number under different modulating coding mode per symbols.
, can also be by carrying out overtime extension only when channel transmission rate declines, and in channel in the embodiment of the present invention
When transmission rate rises because of modulating mode switching, TCP itself the conservative growth of detection mechanism is still relied on, such as：cwnd1
=cwnd*（Min 1,（m/m1）}）.
The equipment of step 3, TCP connections agent entity caching from data are sent to this TCP connections agent entity（Service
Device）Downlink data, window value will be received in uplink ACK and be revised as rwnd ', and notified to this TCP connections agent entity hair
Sending the equipment of data reduces data transmission rate, is sent from the equipment adjustment data for sending data to TCP connections agent entity
Speed is：min{Cbuff, rwnd ' *（m/m1）}；Wherein, CbuffFor the single connection data buffer storage upper limit threshold of TCP connection agent entitys
Value.
Mode two, the down buffer storage and rate-matched for being superimposed window mode；Comprise the following steps under the manner：
Step 1, TCP connection agent entitys are receiving radio channel status information（The modulating-coding reported such as base station equipment
The handover information of pattern）When, the terminal device at record current time connects downlink congestion window value cwnd and current time
Terminal device receive window value rwnd.
Step 2, TCP connection agent entitys reset bandwidth window wwnd ' and are：wwnd*（m/m1）, and reset hair
The window swnd is sent to be：Min cwnd, rwnd, wwnd ' }.
Wherein, wwnd is channel window parameter；Specifically, by changing TCP connection agent entitys side TCP protocol stack congestion
Control logic, increases a channel window parameter wwnd, the window size for reflecting bottleneck link in real time；In stable state
Under, wwnd numerical value=swnd window sizes.
Wherein, m/m1For channel valid bit speed（That is normalization data rate）The ratio between；Further, when channel coding rank
When number changes, m/m1=log2（s/s1）, and s/s1For the ratio between exponent number under different modulating coding mode per symbols.
The equipment of step 3, TCP connections agent entity caching from data are sent to this TCP connections agent entity（Service
Device）Downlink data, window value will be received in uplink ACK and be revised as rwnd ', and notified to this TCP connections agent entity hair
Sending the equipment of data reduces data transmission rate, is sent from the equipment adjustment data for sending data to TCP connections agent entity
Speed is：min{Cbuff, rwnd ' *（swnd/swnd’）}；Wherein, CbuffFor the single connection data buffer storage of TCP connection agent entitys
Upper limit threshold, swnd attaches most importance to newly-installed transmission window, and swnd ' is the transmission window before resetting.
In summary, in the embodiment of the present invention, TCP connections agent entity can be rational based on radio channel status information
The channel resource after transmission rate, and the switching using modulating mode efficient in time is adjusted, so as to avoid interface-free resources
Waste.Further, the blind search shake of the TCP congestion controls caused by wireless channel can be avoided unstable, it is to avoid super
Shi Chongchuan（Such as avoid the data cached bag of base station equipment and time-out weight of the follow-up data bag after channel status switching will be issued
Pass）With the phenomenon such as queue congestion, so as to improve wireless data service Consumer's Experience.Further, by packet domain gateway portion
TCP connection agent entitys are affixed one's name to, when can shorten channel status switching, are fed back end to end and response delay（That is, RTT is shortened）,
Improve the promptness of data transfer adjustment reaction.
Embodiment two
Based on the inventive concept same with the above method, a kind of transmission control protocol is additionally provided in the embodiment of the present invention
TCP connection agent entitys, as shown in figure 3, the TCP connection agent entitys include：
Acquisition module 11, for obtaining radio channel status information；
Processing module 12, for adjusting Retransmission timeout time parameter RTO according to the radio channel status information, reduction is originally
The data transmission rate of TCP connection agent entitys, and notify to reduce data to the equipment that this TCP connections agent entity sends data
Transmission rate.
In the embodiment of the present invention, the radio channel status information is specially interface-free resources scheduling result and modulating-coding
Pattern；Or, the radio channel status information is specially to be determined based on interface-free resources scheduling result and modulating-coding pattern
Data transfer bit rate；Or, the radio channel status information is specially small area jam configured information；Or, the nothing
Line channel condition information is specially channel bearing information；
The acquisition module 11, specifically for receiving the radio channel status information that base station equipment is reported.
In the embodiment of the present invention, the radio channel status information is specially interface-free resources scheduling result and modulating-coding
Pattern；Or, the radio channel status information is specially to be determined based on interface-free resources scheduling result and modulating-coding pattern
Data transfer bit rate；Or, the radio channel status information is specially small area jam configured information；Or, the nothing
Line channel condition information is specially channel bearing information；
The processing module 12, specifically for determining valid data transmission of eating dishes without rice or wine according to the radio channel status information
When bit rate changes, Retransmission timeout time parameter RTO is adjusted, the data transmission rate of this TCP connection agent entitys is reduced,
Notify to reduce data transmission rate to the equipment that this TCP connections agent entity sends data.
The processing module 12, the radio channel status information for being further used for being received according to the last time determines corresponding number
It is more than preset first threshold value according to transmission bit rate, and the radio channel status information received according to this determines that corresponding data are passed
When defeated bit rate is less than default Second Threshold, it is determined that valid data transmission bit rate of eating dishes without rice or wine changes；Wherein, described default the
One threshold value is more than the default Second Threshold.
The processing module 12, specifically for when receiving the radio channel status information, the of record current time
The transmission at one RTO and current time but still unacknowledged descending TCP data sequence number x；
Resetting the 2nd RTO is：First RTO*（Max { 1, m/m1}）；Wherein, the m/m1For channel effective ratio
The ratio between special speed；
It is determined that after the radio channel status information is received, and receive cover the x positive acknowledgment ACK it
Before, adjustment Retransmission timeout time parameter RTO is the 2nd RTO.
The processing module 12, specifically for when receiving the radio channel status information, recording the end at current time
End equipment connects downlink congestion window value cwnd and terminal device receives window value rwnd；
Resetting transmission window swnd is：min{cwnd1, rwnd }；Wherein, cwnd1=max { iwnd, cwnd*（m/
m1）, the iwnd is the initial transmission window of this TCP connection agent entitys, the m/m1For the ratio between channel valid bit speed；
The downlink data from the equipment that data are sent to this TCP connections agent entity is cached, window will be received in uplink ACK
Mouth numerical value is revised as rwnd ', and notifies to reduce data transmission rate to the equipment that this TCP connections agent entity sends data, by
The equipment for sending data to TCP connections agent entity adjusts data transmission rate and is：min{Cbuff, rwnd ' *（m/m1）}；Its
In, the CbuffFor the single connection data buffer storage upper limit threshold of this TCP connection agent entitys.
The processing module 12, specifically for when receiving the radio channel status information, recording the end at current time
End equipment connects downlink congestion window value cwnd and terminal device receives window value rwnd；
Resetting bandwidth window wwnd ' is：wwnd*（m/m1）, and reset transmission window swnd be：min
Cwnd, rwnd, wwnd ' }；Wherein, the wwnd is channel window parameter, the m/m1For the ratio between channel valid bit speed；
The downlink data from the equipment that data are sent to this TCP connections agent entity is cached, window will be received in uplink ACK
Mouth numerical value is revised as rwnd ', and notifies to reduce data transmission rate to the equipment that this TCP connections agent entity sends data, by
The equipment for sending data to TCP connections agent entity adjusts data transmission rate and is：min{Cbuff, rwnd ' *（swnd/
swnd’）}；Wherein, the CbuffFor the single connection data buffer storage upper limit threshold of this TCP connection agent entitys, the swnd attaches most importance to
Newly-installed transmission window, the swnd ' is the transmission window before resetting.
Wherein, the modules of apparatus of the present invention can be integrated in one, and can also be deployed separately.Above-mentioned module can be closed
And be a module, multiple submodule can also be further split into.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention can be by
Software adds the mode of required general hardware platform to realize, naturally it is also possible to which by hardware, but in many cases, the former is more
Good embodiment.Understood based on such, what technical scheme substantially contributed to prior art in other words
Part can be embodied in the form of software product, and the computer software product is stored in a storage medium, if including
Dry instruction is to cause a computer equipment（Can be personal computer, server, or network equipment etc.）Perform this hair
Method described in each bright embodiment.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module or stream in accompanying drawing
Journey is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in embodiment can be divided according to embodiment description
It is distributed in the device of embodiment, respective change can also be carried out and be disposed other than in one or more devices of the present embodiment.On
The module for stating embodiment can be merged into a module, can also be further split into multiple submodule.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
Disclosed above is only several specific embodiments of the present invention, and still, the present invention is not limited to this, any ability
What the technical staff in domain can think change should all fall into protection scope of the present invention.
Claims (14)
1. a kind of transmission rate method of adjustment fed back based on wireless channel, it is characterised in that including：
Transmission control protocol TCP connection agent entity obtains radio channel status information；
The TCP connection agent entitys adjust Retransmission timeout time parameter RTO according to the radio channel status information, and reduction is originally
The data transmission rate of TCP connection agent entitys, and notify to reduce data to the equipment that this TCP connections agent entity sends data
Transmission rate；
Wherein, the process of the TCP connections agent entity adjustment Retransmission timeout time parameter RTO is specifically included：
The TCP connection agent entitys when receiving the radio channel status information, record current time the first RTO and
The transmission at current time but still unacknowledged descending TCP data sequence number x；
The TCP connections agent entity is determined after the radio channel status information is received, and is receiving the covering x's
Before positive acknowledgment ACK, adjustment Retransmission timeout time parameter RTO is the 2nd RTO.
2. the method as described in claim 1, it is characterised in that the radio channel status information is specially interface-free resources scheduling
And modulating-coding pattern as a result；Or, the radio channel status information be specially based on interface-free resources scheduling result and
The data transfer bit rate that modulating-coding pattern is determined；Or, the radio channel status information is specially that small area jam is indicated
Information；Or, the radio channel status information is specially channel bearing information；
The transmission control protocol TCP connection agent entity obtains radio channel status information, specifically includes：
The TCP connections agent entity receives the radio channel status information that base station equipment is reported.
3. the method as described in claim 1, it is characterised in that the radio channel status information is specially interface-free resources scheduling
And modulating-coding pattern as a result；Or, the radio channel status information be specially based on interface-free resources scheduling result and
The data transfer bit rate that modulating-coding pattern is determined；Or, the radio channel status information is specially that small area jam is indicated
Information；Or, the radio channel status information is specially channel bearing information；
The TCP connection agent entitys adjust Retransmission timeout time parameter RTO according to the radio channel status information, and reduction is originally
The data transmission rate of TCP connection agent entitys, and notify to reduce data to the equipment that this TCP connections agent entity sends data
Transmission rate, is specifically included：
The TCP connection agent entitys are determining valid data transmission bit rate hair of eating dishes without rice or wine according to the radio channel status information
During changing, adjust Retransmission timeout time parameter RTO, reduce the data transmission rate of this TCP connection agent entitys, and notify to
This TCP connections agent entity sends the equipment reduction data transmission rate of data.
4. method as claimed in claim 3, it is characterised in that the TCP connection agent entitys are according to the wireless channel shape
State information determines that valid data transmission bit rate of eating dishes without rice or wine changes, and specifically includes：
The radio channel status information that the TCP connection agent entitys are received according to the last time determines corresponding data transfer bit
Rate is more than preset first threshold value, and the radio channel status information received according to this determines that corresponding data transfer bit rate is small
When default Second Threshold, it is determined that valid data transmission bit rate of eating dishes without rice or wine changes；Wherein, the preset first threshold value is more than
The default Second Threshold.
5. the method as described in claim 1 or 3, it is characterised in that the TCP connections agent entity adjusts the Retransmission timeout time
Parameter RTO process, the TCP connections agent entity resets the 2nd RTO and is：
First RTO* (the max { 1, m/m1})；Wherein, the m/m1For the ratio between channel valid bit speed.
6. the method as described in claim 1 or 3, it is characterised in that the TCP connections agent entity reduces this TCP connection generations
The data transmission rate of entity is managed, and notifies to reduce data transmission rate to the equipment that this TCP connections agent entity sends data
Process, further comprise：
The TCP connection agent entitys are when receiving the radio channel status information, and the terminal device at record current time connects
Meet downlink congestion window value cwnd and terminal device receives window value rwnd；
The TCP connections agent entity resets transmission window swnd：min{cwnd1, rwnd }；
Wherein, cwnd1=max { iwnd, cwnd* (m/m1), the iwnd is the initial transmission window of this TCP connection agent entitys
Mouthful, the m/m1For the ratio between channel valid bit speed；
The downlink data of the TCP connections agent entity caching from the equipment that data are sent to this TCP connections agent entity, will
Window value is received in uplink ACK and is revised as rwnd ', and notifies to send the equipment reduction of data to this TCP connections agent entity
Data transmission rate, be from the equipment adjustment data transmission rate for sending data to TCP connections agent entity：min{Cbuff,
rwnd’*(m/m1)}；Wherein, the CbuffFor the single connection data buffer storage upper limit threshold of the TCP connections agent entity.
7. the method as described in claim 1 or 3, it is characterised in that the TCP connections agent entity reduces this TCP connection generations
The data transmission rate of entity is managed, and notifies to reduce data transmission rate to the equipment that this TCP connections agent entity sends data
Process, further comprise：
The TCP connection agent entitys are when receiving the radio channel status information, and the terminal device at record current time connects
Meet downlink congestion window value cwnd and terminal device receives window value rwnd；
The TCP connections agent entity resets bandwidth window wwnd '：wwnd*(m/m1), and reset transmission window
Swnd is：Min cwnd, rwnd, wwnd ' }；
Wherein, the wwnd is channel window parameter, the m/m1For the ratio between channel valid bit speed；
The downlink data of the TCP connections agent entity caching from the equipment that data are sent to this TCP connections agent entity, will
Window value is received in uplink ACK and is revised as rwnd ', and notifies to send the equipment reduction of data to this TCP connections agent entity
Data transmission rate, be from the equipment adjustment data transmission rate for sending data to TCP connections agent entity：min{Cbuff,
rwnd’*(swnd/swnd’)}；Wherein, the CbuffFor the single connection data buffer storage upper limit threshold of the TCP connections agent entity
Value, the swnd attaches most importance to newly-installed transmission window, and the swnd ' is the transmission window before resetting.
8. a kind of transmission control protocol TCP connects agent entity, it is characterised in that including：
Acquisition module, for obtaining radio channel status information；
Processing module, for adjusting Retransmission timeout time parameter RTO according to the radio channel status information, reduces this TCP companies
The data transmission rate of agent entity is connect, and notifies to send to the equipment reduction data that this TCP connections agent entity sends data
Speed；
Wherein, during the TCP connections agent entity adjustment Retransmission timeout time parameter RTO, the processing module is specific
The first RTO and the transmission at current time for when receiving the radio channel status information, recording current time
But still unacknowledged descending TCP data sequence number x；
It is determined that after the radio channel status information is received, and before the positive acknowledgment ACK for covering the x is received, adjust
Whole Retransmission timeout time parameter RTO is the 2nd RTO.
9. TCP connections agent entity as claimed in claim 8, it is characterised in that
The radio channel status information is specially interface-free resources scheduling result and modulating-coding pattern；Or, it is described wireless
Channel condition information is specially the data transfer bit rate determined based on interface-free resources scheduling result and modulating-coding pattern；Or
Person, the radio channel status information is specially small area jam configured information；Or, the radio channel status information is specially
Channel bearing information；
The acquisition module, specifically for receiving the radio channel status information that base station equipment is reported.
10. TCP connections agent entity as claimed in claim 8, it is characterised in that
The radio channel status information is specially interface-free resources scheduling result and modulating-coding pattern；Or, it is described wireless
Channel condition information is specially the data transfer bit rate determined based on interface-free resources scheduling result and modulating-coding pattern；Or
Person, the radio channel status information is specially small area jam configured information；Or, the radio channel status information is specially
Channel bearing information；
The processing module, specifically for determining valid data transmission bit rate of eating dishes without rice or wine according to the radio channel status information
When changing, adjust Retransmission timeout time parameter RTO, reduce the data transmission rate of this TCP connection agent entitys, notify to
This TCP connections agent entity sends the equipment reduction data transmission rate of data.
11. TCP connections agent entity as claimed in claim 10, it is characterised in that
The processing module, is further used for determining corresponding data transfer according to the radio channel status information that the last time receives
Bit rate is more than preset first threshold value, and the radio channel status information received according to this determines corresponding data transfer bit
When rate is less than default Second Threshold, it is determined that valid data transmission bit rate of eating dishes without rice or wine changes；Wherein, the preset first threshold value
More than the default Second Threshold.
12. the TCP connection agent entitys as described in claim 8 or 10, it is characterised in that
Resetting the 2nd RTO is：First RTO* (the max { 1, m/m1})；Wherein, the m/m1For channel valid bit speed
The ratio between rate.
13. the TCP connection agent entitys as described in claim 8 or 10, it is characterised in that
The processing module, specifically for when receiving the radio channel status information, recording the terminal device at current time
Connect downlink congestion window value cwnd and terminal device receives window value rwnd；
Resetting transmission window swnd is：min{cwnd1, rwnd }；Wherein, cwnd1=max { iwnd, cwnd* (m/m1),
The iwnd is the initial transmission window of this TCP connection agent entitys, the m/m1For the ratio between channel valid bit speed；
The downlink data from the equipment that data are sent to this TCP connections agent entity is cached, window number will be received in uplink ACK
Value is revised as rwnd ', and notifies to reduce data transmission rate to the equipment that this TCP connections agent entity sends data, from this to
The equipment of TCP connections agent entity transmission data adjusts data transmission rate and is：min{Cbuff, rwnd ' * (m/m1)}；Wherein, institute
State CbuffFor the single connection data buffer storage upper limit threshold of this TCP connection agent entitys.
14. the TCP connection agent entitys as described in claim 8 or 10, it is characterised in that
The processing module, specifically for when receiving the radio channel status information, recording the terminal device at current time
Connect downlink congestion window value cwnd and terminal device receives window value rwnd；
Resetting bandwidth window wwnd ' is：wwnd*(m/m1), and reset transmission window swnd be：Min cwnd,
Rwnd, wwnd ' }；Wherein, the wwnd is channel window parameter, the m/m1For the ratio between channel valid bit speed；
The downlink data from the equipment that data are sent to this TCP connections agent entity is cached, window number will be received in uplink ACK
Value is revised as rwnd ', and notifies to reduce data transmission rate to the equipment that this TCP connections agent entity sends data, from this to
The equipment of TCP connections agent entity transmission data adjusts data transmission rate and is：min{Cbuff, rwnd ' * (swnd/swnd ') }；
Wherein, the CbuffFor the single connection data buffer storage upper limit threshold of this TCP connection agent entitys, the swnd attaches most importance to newly-installed
Window is sent, the swnd ' is the transmission window before resetting.
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Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2530368B (en) * | 2015-06-03 | 2016-08-10 | Bridgeworks Ltd | Transmitting data |
| WO2017193274A1 (en) * | 2016-05-10 | 2017-11-16 | Qualcomm Incorporated | Radio-aware tcp congestion control optimization |
| CN106850169B (en) * | 2016-11-29 | 2019-11-29 | 上海华为技术有限公司 | A kind of method and communication equipment of scheduling of resource distribution |
| CN106713432B (en) * | 2016-12-13 | 2019-11-05 | 深信服科技股份有限公司 | Data cache method and network agent equipment |
| CN106993311B (en) * | 2017-05-19 | 2019-12-10 | 京信通信系统（中国）有限公司 | Base station data optimized transmission method and system |
| CN109560897B (en) * | 2017-09-25 | 2022-03-01 | 网宿科技股份有限公司 | TCP retransmission method and device |
| CN108668323B (en) * | 2018-05-08 | 2022-05-13 | Oppo广东移动通信有限公司 | Transmission rate adjustment method and related device |
| CN109040004A (en) * | 2018-05-25 | 2018-12-18 | 北京无线电测量研究所 | ICP/IP protocol implementation method, device and storage medium |
| CN108880763B (en) * | 2018-06-27 | 2022-02-22 | 努比亚技术有限公司 | Retransmission timeout time optimization method, device and computer-readable storage medium |
| CN110677221B (en) | 2018-07-02 | 2022-06-14 | 华为技术有限公司 | Retransmission control method, communication interface and electronic equipment |
| CN110120896B (en) * | 2019-04-15 | 2020-12-25 | 北京达佳互联信息技术有限公司 | Network delay control method and device, electronic equipment and storage medium |
| CN112311725B (en) * | 2019-07-26 | 2022-01-11 | 华为技术有限公司 | Data processing method and device and terminal |
| CN113596068B (en) * | 2020-04-30 | 2022-06-14 | 北京金山云网络技术有限公司 | Method, device and server for establishing TCP connection |
| CN113726671B (en) * | 2020-05-26 | 2023-06-30 | 华为技术有限公司 | Network congestion control method and related products |
| CN114173428B (en) * | 2021-10-21 | 2022-08-05 | 北京连山科技股份有限公司 | Method for improving data transmission speed of multilink equipment |
| CN114710425B (en) * | 2022-03-30 | 2024-03-26 | 蚂蚁区块链科技(上海)有限公司 | Block chain link point connection method, device, medium and equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635952A (en) * | 2008-07-21 | 2010-01-27 | 大唐移动通信设备有限公司 | Method and device for controlling congestion in mobile communication system |
| CN101662842A (en) * | 2009-10-09 | 2010-03-03 | 天津大学 | TCP parameter adjusting method applicable to wireless self-organized network |
| EP2439878A1 (en) * | 2009-06-10 | 2012-04-11 | ZTE Corporation | Method and system for network congestion management |
| CN102571552A (en) * | 2010-12-31 | 2012-07-11 | 中国移动通信集团公司 | Gateway congestion regulation and control method and system, gateway and network element |
| CN102860072A (en) * | 2010-04-23 | 2013-01-02 | 捷讯研究有限公司 | System and method for network congestion control |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2204017B1 (en) * | 2007-11-01 | 2012-05-16 | Telefonaktiebolaget L M Ericsson (publ) | Efficient flow control in an rnc |
-
2013
- 2013-06-19 CN CN201310244644.0A patent/CN104243090B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635952A (en) * | 2008-07-21 | 2010-01-27 | 大唐移动通信设备有限公司 | Method and device for controlling congestion in mobile communication system |
| EP2439878A1 (en) * | 2009-06-10 | 2012-04-11 | ZTE Corporation | Method and system for network congestion management |
| CN101662842A (en) * | 2009-10-09 | 2010-03-03 | 天津大学 | TCP parameter adjusting method applicable to wireless self-organized network |
| CN102860072A (en) * | 2010-04-23 | 2013-01-02 | 捷讯研究有限公司 | System and method for network congestion control |
| CN102571552A (en) * | 2010-12-31 | 2012-07-11 | 中国移动通信集团公司 | Gateway congestion regulation and control method and system, gateway and network element |
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|---|---|
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