CN107645790A - A kind of transmission control protocol TCP link method for building up and base station - Google Patents
A kind of transmission control protocol TCP link method for building up and base station Download PDFInfo
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- CN107645790A CN107645790A CN201610576995.5A CN201610576995A CN107645790A CN 107645790 A CN107645790 A CN 107645790A CN 201610576995 A CN201610576995 A CN 201610576995A CN 107645790 A CN107645790 A CN 107645790A
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Abstract
The present invention, which discloses a kind of transmission control protocol TCP link method for building up and base station, method, to be included：The TCP three-way handshake process of simulation is completed with main website after the first time handshake information SYN that main website is sent to UE is received in base station；Base station sends SYN after SYN is received, to UE, so that UE sends second handshake message SYN/ACK to main website；Base station receive UE transmission SYN/ACK after, and with main website complete simulation TCP three-way handshake process after, with UE complete simulation third time shake hands, so as to realize that the TCP of main website and UE links foundation.The TCP link setups request that main website initiates in the present invention directly feeds back to main website by base station processing, then main website and the TCP three-way handshake of base station simulation are completed, cable environment between main website and base station can avoid due to air-interface scheduling not in time caused TCP link setups time-out the problem of, real link establishment have abundance time completed by eating dishes without rice or wine.
Description
Technical field
The present invention relates to communication technical field, and in particular to a kind of transmission control protocol TCP chain
Connect method for building up and base station.
Background technology
230MHz frequency ranges are mainly used in data radio station and undertake long-range data acquisition work at present
Make, some simple communications applications be only used for because the speed of 230MHz frequency ranges offer is very low,
Intelligent grid and the growing business demand of Sensor Network can not be met.Therefore it is required that find one
Kind new broadband communications technologies, meet distribution automation, load management, power information collection,
Smart power grid user service, emergency first-aid repair, the business in six big field of special area video monitoring
Demand.
Based on time-division Long Term Evolution (Time Division-Long Term Evolution,
TD-LTE) the 230MHz frequency range private network wireless communication systems of technology provide for the demand
Preferable solution, constitute low-power consumption of new generation, high spectrum utilization, high reliability
Flexible multi-business communication system.230MHz frequency range private networks wireless communication system can be maximum
Meet to degree the business need of power load monitoring system, at the same it is of future generation for national grid
The network planning provides solid technological accumulation and Applied D emonstration.
For above-mentioned business demand, private network wireless communication system network side eNodeB (Evolved
NodeB, evolution base station) use semi-persistent scheduling mode (SPS, semi-persistent
scheduling).Semi-persistent scheduling refers to：Allocation of packets of the evolution base station to specific transactions
Fixed running time-frequency resource, the packet of the specific transactions pass in the running time-frequency resource position of the fixation
It is defeated, it is not required to extra Physical Downlink Control Channel (PDCCH, Physical Downlink
Control Channel) schedule information.By a transmission cycle being semi-statically configured, one
After secondary scheduling, user terminal UE (User Equipment) i.e. according to configuration cycle and
The resource of initial schedule carries out sending and receiving for data.According to 230MHz frequency ranges private network without
Line communication system frame structure and timing Design, downlink data transmission use HARQ (Hybrid
Automatic Repeat Request, hybrid automatic repeat-request) technology, it is poor that data are carried out
Mistake control, new biography, the data accurate actual effect retransmitted are sent to user terminal UE.
In summary, for ensureing to call the business demand for surveying success rate together in field application, super
When the time reach before ensure that the success of TCP link setups and data transfer are normal, according to LTE230MHz
The scheduling flow of multiband wireless communications system, main website need to take interface-free resources with terminal link setup,
Interface-free resources are limited, in the case of bad channel quality, find it is a kind of improve TCP link setups into
The method of power seems particularly critical.
At present, the TCP link setup flows called together during surveying of LTE230 systems are mainly reflected in
Three-way handshake of the main website with user equipment (UE) by realization of eating dishes without rice or wine, as shown in figure 1, including
Step S01~S08：
S01：Main website sends first time handshake information SYN to UE；
S02：Base station eNodeB receives the SYN of main website transmission, and SYN is forwarded to
UE；
S03：After UE receives the SYN of eNodeB transmissions, second handshake message is generated
SYN/ACK；
S04：UE sends second handshake message SYN/ACK to main website；
S05：ENodeB receives the SYN/ACK of UE transmissions, and SYN/ACK is turned
It is dealt into main website；
S06：After main website receives the SYN/ACK of eNodeB transmissions, generation third time is held
Hand message ACK；
S07：Main website sends third time handshake information ACK to UE；
S08：ENodeB receives the ACK of main website transmission, and ACK is forwarded into UE,
Three-way handshake is completed, main website establishes TCP with UE and linked.
Wherein, eNodeB only plays the part of the role of data forwarding wherein.Main website is in one's hands with terminal
All message feedbacks required for during hand are required to transmit by eating dishes without rice or wine, and actually should
Eated dishes without rice or wine in situations such as resource-constrained, channel quality is poor and terminal quantity is huge may
The time-out of TCP link setups can be caused, the success rate for reducing TCP link setups of high degree, led
Cause the follow-up business demand called survey data failure together, scene can not be met.
The content of the invention
In view of the above problems, the present invention, which proposes, overcomes above mentioned problem or solves at least in part
Certainly a kind of transmission control protocol TCP link method for building up of above mentioned problem and base station.
In a first aspect, the present invention proposes a kind of transmission control protocol TCP link method for building up,
Including：
Base station is in the first time handshake information SYN for receiving main website and being sent to user equipment (UE)
Afterwards, the TCP three-way handshake process of simulation is completed with the main website；
The base station sends the SYN after the SYN is received, to the UE, with
The UE is set to send second handshake message SYN/ACK to the main website；
The base station after the SYN/ACK that the UE is sent is received, and with it is described
After main website completes the TCP three-way handshake process of simulation, the 3rd of simulation is completed with the UE
It is secondary to shake hands, so as to realize that the TCP of the main website and the UE links foundation.
Wherein, the base station is held receiving the first time that main website sends to user equipment (UE)
After hand message SYN, the TCP three-way handshake process of simulation is completed with the main website, including：
The base station is in the first time handshake information for receiving main website and being sent to user equipment (UE)
After SYN, based on the SYN, the second handshake message SYN/ACK of simulation is generated；
The SYN/ACK of simulation is sent to the main website by the base station, so that the master
Stand and send third time handshake information ACK to the base station；
The base station receives the ACK, so as to complete the TCP three-way handshake process of simulation.
Wherein, after the base station receives the ACK, in addition to：
Abandon the ACK；
Correspondingly, after the TCP three-way handshake process for completing simulation, in addition to：
Cache the TCP data bag that the main website issues.
Wherein, the base station is after the SYN/ACK that the UE is sent is received, and
After the TCP three-way handshake process for completing simulation with the main website, complete to simulate with the UE
Third time shake hands, including：
The base station after the SYN/ACK that the UE is sent is received, and with the master
After the TCP three-way handshake process for completing simulation of standing, based on the SYN/ACK, generation simulation
Third time handshake information ACK；
The ACK of simulation is sent to the UE by the base station, is realized and is completed with the UE
The third time of simulation is shaken hands.
Wherein, after the third time handshake information ACK of the generation simulation, in addition to：
Abandon the SYN/ACK.
Second aspect, the present invention also propose a kind of base station, including：
First analogue unit, in receive that main website sends to user equipment (UE) first
After secondary handshake information SYN, the TCP three-way handshake process of simulation is completed with the main website；
Transmitting element, after the SYN is received, the SYN is sent to the UE,
So that the UE sends second handshake message SYN/ACK to the main website；
Second analogue unit, for after the SYN/ACK that the UE is sent is received,
And after first analogue unit completes the TCP three-way handshake process of simulation with the main website,
The third time that simulation is completed with the UE is shaken hands, so as to realize the main website and the UE's
TCP links are established.
Wherein, first analogue unit, is specifically used for：Set receiving main website to user
After the first time handshake information SYN that standby UE is sent, based on the SYN, simulation is generated
Second handshake message SYN/ACK；The SYN/ACK of simulation is sent to the master
Stand, so that the main website sends third time handshake information ACK to the base station；Described in reception
ACK, so as to complete the TCP three-way handshake process of simulation.
Wherein, the base station also includes：
First buffer unit, for after first analogue unit receives the ACK, abandoning
The ACK；And complete the TCP three-way handshake process of simulation in first analogue unit
Afterwards, the TCP data bag that the main website issues is cached.
Wherein, second analogue unit, is specifically used for：Sent receiving the UE
The SYN/ACK after, and first analogue unit and the main website complete simulation
After TCP three-way handshake process, based on the SYN/ACK, the third time for generating simulation is shaken hands
Message ACK；The ACK of simulation is sent to the UE, realized complete with the UE
Third time into simulation is shaken hands.
Wherein, the base station also includes：
Discarding unit, for the third time handshake information in second analogue unit generation simulation
After ACK, the SYN/ACK is abandoned.
Compared to prior art, transmission control protocol TCP proposed by the present invention links foundation side
Method and base station, main website and UE TCP link setup flows are changed, base station plays wherein
Important role.The TCP link setups request that main website initiates directly feeds back to master by base station processing
Stand, then complete main website and the TCP three-way handshake of base station simulation, having between main website and base station
Thread environment can avoid due to air-interface scheduling not in time caused TCP link setups time-out the problem of,
The time that real link establishment has abundance is completed by eating dishes without rice or wine, while the master of node B cache
The data that station issues ensure in RLC (Radio Link Control, wireless spread-spectrum technology) layer
In the case of transmission, ensure that data are not lost completely.
Brief description of the drawings
Fig. 1 is that main website and user equipment (UE) are established the flow that TCP is linked and shown in the prior art
It is intended to；
Fig. 2 is that a kind of TCP that first embodiment of the invention provides links method for building up flow
Figure；
Fig. 3 is that a kind of main website that second embodiment of the invention provides links with UE progress TCP
The flow chart of foundation；
Fig. 4 is a kind of architecture of base station schematic diagram that third embodiment of the invention provides.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below will
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear
Describing to Chu, it is clear that described embodiment is part of the embodiment of the present invention, rather than
Whole embodiments.
As shown in Fig. 2 the present embodiment discloses a kind of transmission control protocol TCP link foundation side
Method, it may include following steps 201~203：
201st, base station is in the first time handshake information for receiving main website and being sent to user equipment (UE)
After SYN, the TCP three-way handshake process of simulation is completed with the main website；
202nd, the base station sends the SYN after the SYN is received to the UE,
So that the UE sends second handshake message SYN/ACK to the main website；
203rd, the base station is after the SYN/ACK that the UE is sent is received, and
After the TCP three-way handshake process for completing simulation with the main website, complete to simulate with the UE
Third time shake hands, so as to realize that the TCP of the main website and the UE links foundation.
Compared to prior art, transmission control protocol TCP disclosed in the present embodiment links method for building up,
Main website and UE TCP link setup flows are changed, base station plays important role wherein.
The TCP link setups request that main website initiates directly feeds back to main website by base station processing, then completes
Main website and the TCP three-way handshake of base station simulation, the cable environment between main website and base station ensure to build
Chain is not overtime, the problem of being not in TCP link setup time-out, avoids because air-interface scheduling is too late
When the problem of causing TCP link setup time-out, the time that real link establishment has abundance passes through sky
Mouth goes to complete, while the data that the main website of node B cache issues are in RLC (Radio Link
Control, wireless spread-spectrum technology) layer ensure transmission in the case of, ensure data do not lose completely
Lose.
In a specific example, " base station is receiving main website to user to the step 201
After the first time handshake information SYN that equipment UE is sent, simulation is completed with the main website
TCP three-way handshake process ", specifically include the following steps 2011~2013 not shown in Fig. 2：
2011st, the base station is shaken hands receiving the first time that main website sends to user equipment (UE)
After message SYN, based on the SYN, the second handshake message SYN/ACK of simulation is generated；
2012nd, the SYN/ACK of simulation is sent to the main website by the base station, so that
The main website sends third time handshake information ACK to the base station；
2013rd, the base station receives the ACK, so as to complete the TCP three-way handshake of simulation
Journey.
In a specific example, in the step 2013 " after base station receives the ACK ",
It may also include：Abandon the ACK.
Correspondingly, in the step 2013 after " the TCP three-way handshake process for completing simulation ",
It may also include：The TCP data that caching main website issues.
In a specific example, " base station is receiving the UE hairs to the step 203
After the SYN/ACK sent, and with the main website complete simulation TCP three-way handshake
Cheng Hou, the third time that simulation is completed with the UE are shaken hands ", it specifically may include not show in Fig. 2
The step 2031 gone out and 2032：
2031st, the base station is after the SYN/ACK that the UE is sent is received, and with
It is raw based on the SYN/ACK after the main website completes the TCP three-way handshake process of simulation
Into the third time handshake information ACK of simulation；
2032nd, the ACK of simulation is sent to the UE by the base station, realize with it is described
The third time that UE completes simulation is shaken hands.
In a specific example, " third time of generation simulation is shaken hands in the step 2031
After message ACK ", it may also include：Abandon the SYN/ACK.
Based on above-described embodiment, a specific example is provided, as shown in figure 3, a kind of main website
TCP, which is carried out, with UE links the following S001~S011 of process established：
S001：Main website initiates link setup request SYN (shaking hands for the first time).
S002：ENodeB is received and is sent to end by eating dishes without rice or wine by SYN is intact after SYN
End.
S003：ENodeB simulates SYN/ACK according to SYN is received；
S004：The SYN/ACK of simulation is sent to main website by eNodeB；
S005：Main website side generates corresponding A CK (third time handshake information) after receiving SYN/ACK；
S006：Main website sends third time handshake information；
S007：The ACK handshake informations that eNodeB sends over main website abandon.
S008：UE is received corresponding to the SYN handshake informations generation that eNodeB is sent
SYN/ACK (second handshake message).
S009：SYN/ACK is sent to eNodeB by UE.
S010：ENodeB ACK according to corresponding to being simulated SYN/ACK, while abandon and be somebody's turn to do
SYN/ACK。
S011：The ACK of simulation is sent to UE by eNodeB.
In the present embodiment, main website and terminal are changed on the basis of existing model is not changed
TCP link setup flows so that the time that link establishment has abundance is completed by eating dishes without rice or wine.Main website is sent out
Rise TCP link setups request main website is directly fed back to by eNodeB processing, then complete main website and
The TCP three-way handshake of eNodeB simulations, is avoided because air-interface scheduling causes TCP link setups not in time
Time-out.
As shown in figure 4, the present embodiment discloses a kind of base station, it may include with lower unit：First
Analogue unit 41, the analogue unit 43 of transmitting element 42 and second.Each unit is specifically
It is bright as follows：
First analogue unit 41, in receive that main website sends to user equipment (UE)
After handshake information SYN, the TCP three-way handshake process of simulation is completed with the main website；
Transmitting element 42, after the SYN is received, the SYN is sent to the UE,
So that the UE sends second handshake message SYN/ACK to the main website；
Second analogue unit 43, for receiving the SYN/ACK of the UE transmissions
Afterwards, and first analogue unit 41 completes the TCP three-way handshake of simulation with the main website
After process, with the UE complete simulation third time shake hands, so as to realize the main website with
The TCP links of the UE are established.
Base station disclosed in the present embodiment, the TCP link method for building up streams shown in Fig. 2 can be achieved
Journey, therefore, the effect and explanation of the base station in the present embodiment can be found in the method shown in Fig. 1
Embodiment, it will not be repeated here.
In a specific example, first analogue unit 41, it is specifically used for：Connecing
After receiving the first time handshake information SYN that main website is sent to user equipment (UE), based on described
SYN, generate the second handshake message SYN/ACK of simulation；By described in simulation
SYN/ACK is sent to the main website, is held so that the main website sends third time to the base station
Hand message ACK；The ACK is received, so as to complete the TCP three-way handshake process of simulation.
In a specific example, the base station is also included not shown in Fig. 4：First is slow
Memory cell 44：
First buffer unit 44, for after first analogue unit 41 receives the ACK,
Abandon the ACK；And complete the TCP three-way handshake of simulation in first analogue unit 41
After process, the TCP data bag that main website issues is cached.
In a specific example, second analogue unit 43, it is specifically used for：Connecing
After receiving the SYN/ACK that the UE is sent, and first analogue unit 41 with
After the main website completes the TCP three-way handshake process of simulation, based on the SYN/ACK,
Generate the third time handshake information ACK of simulation；The ACK of simulation is sent to described
UE, realize that the third time that simulation is completed with the UE is shaken hands.
In a specific example, the base station is also included not shown in Fig. 4：Abandon single
Member 45, for the third time handshake information ACK in second analogue unit 43 generation simulation
Afterwards, the SYN/ACK is abandoned.
In summary each embodiment understand, the embodiment of the present invention change call together survey during needed for
The mechanism of TCP link setups.The link setup request that main website side is initiated terminates in eNodeB sides, and main website side is not
The problem of link setup time-out again be present.Real link establishment is now led still through air interface transmission
Timeout issue is not present in side of standing, and eNodeB can ensure to transmit, it is ensured that the normal of link is built
It is vertical, improve due to calling the problem of dendrometry loses caused by link setup failure together, survey success rate is called in raising together.
It will be understood by those skilled in the art that each unit in embodiment can be combined into one
Individual unit, and multiple subelements can be divided into addition.Except such feature and/
Or at least some in process or unit are mutually exclusive parts, any combinations can be used
To all features disclosed in this specification and so disclosed any method or equipment
All processes or unit are combined.Unless expressly stated otherwise, disclosed in this specification
Each feature can be replaced by the alternative features for providing identical, equivalent or similar purpose.
It will be appreciated by those of skill in the art that although some embodiments described herein include
Included some features rather than further feature in other embodiments, but different embodiments
The combination of feature mean to be within the scope of the present invention and form different implementation
Example.
It will be understood by those skilled in the art that each unit in embodiment can be realized with hardware,
Either realized or with them with the software module run on one or more processor
Combination realize.It will be understood by those of skill in the art that micro- place can be used in practice
Device or digital signal processor (DSP) are managed to realize some according to embodiments of the present invention
Or some or all functions of whole parts.The present invention is also implemented as being used to perform
Method as described herein some or all equipment or program of device (for example,
Computer program and computer program product).
Although being described in conjunction with the accompanying embodiments of the present invention, those skilled in the art
Various modifications and variations can be made without departing from the spirit and scope of the present invention,
Such modifications and variations are each fallen within be defined by the appended claims within the scope of.
Claims (10)
1. a kind of transmission control protocol TCP links method for building up, it is characterised in that including：
Base station is in the first time handshake information SYN for receiving main website and being sent to user equipment (UE)
Afterwards, the TCP three-way handshake process of simulation is completed with the main website；
The base station sends the SYN after the SYN is received, to the UE, with
The UE is set to send second handshake message SYN/ACK to the main website；
The base station after the SYN/ACK that the UE is sent is received, and with it is described
After main website completes the TCP three-way handshake process of simulation, the 3rd of simulation is completed with the UE
It is secondary to shake hands, so as to realize that the TCP of the main website and the UE links foundation.
2. according to the method for claim 1, it is characterised in that the base station is receiving
After the first time handshake information SYN sent to main website to user equipment (UE), with the main website
The TCP three-way handshake process of simulation is completed, including：
The base station is in the first time handshake information for receiving main website and being sent to user equipment (UE)
After SYN, based on the SYN, the second handshake message SYN/ACK of simulation is generated；
The SYN/ACK of simulation is sent to the main website by the base station, so that the master
Stand and send third time handshake information ACK to the base station；
The base station receives the ACK, so as to complete the TCP three-way handshake process of simulation.
3. according to the method for claim 2, it is characterised in that described in the base station receives
After ACK, in addition to：
Abandon the ACK；
Correspondingly, after the TCP three-way handshake process for completing simulation, in addition to：
Cache the TCP data bag that the main website issues.
4. according to the method for claim 1, it is characterised in that the base station is receiving
To the UE send the SYN/ACK after, and with the main website complete simulation TCP
After three-way handshake process, the third time that simulation is completed with the UE is shaken hands, including：
The base station after the SYN/ACK that the UE is sent is received, and with the master
After the TCP three-way handshake process for completing simulation of standing, based on the SYN/ACK, generation simulation
Third time handshake information ACK；
The ACK of simulation is sent to the UE by the base station, is realized and is completed with the UE
The third time of simulation is shaken hands.
5. according to the method for claim 4, it is characterised in that the of the generation simulation
After three-way handshake message ACK, in addition to：
Abandon the SYN/ACK.
A kind of 6. base station, it is characterised in that including：
First analogue unit, in receive that main website sends to user equipment (UE) first
After secondary handshake information SYN, the TCP three-way handshake process of simulation is completed with the main website；
Transmitting element, after the SYN is received, the SYN is sent to the UE,
So that the UE sends second handshake message SYN/ACK to the main website；
Second analogue unit, for after the SYN/ACK that the UE is sent is received,
And after first analogue unit completes the TCP three-way handshake process of simulation with the main website,
The third time that simulation is completed with the UE is shaken hands, so as to realize the main website and the UE's
TCP links are established.
7. base station according to claim 6, it is characterised in that first simulation is single
Member, it is specifically used for：Shake hands and disappear receiving the first time that main website sends to user equipment (UE)
After ceasing SYN, based on the SYN, the second handshake message SYN/ACK of simulation is generated；
The SYN/ACK of simulation is sent to the main website, so that the main website is to the base
Stand and send third time handshake information ACK；The ACK is received, so as to complete the TCP of simulation
Three-way handshake process.
8. base station according to claim 7, it is characterised in that the base station also includes：
First buffer unit, for after first analogue unit receives the ACK, abandoning
The ACK；And complete the TCP three-way handshake process of simulation in first analogue unit
Afterwards, the TCP data bag that the main website issues is cached.
9. base station according to claim 6, it is characterised in that second simulation is single
Member, it is specifically used for：After the SYN/ACK that the UE is sent is received, and it is described
After first analogue unit completes the TCP three-way handshake process of simulation with the main website, based on institute
SYN/ACK is stated, generates the third time handshake information ACK of simulation；By the ACK of simulation
The UE is sent to, realizes that the third time that simulation is completed with the UE is shaken hands.
10. base station according to claim 9, it is characterised in that the base station also includes：
Discarding unit, for the third time handshake information in second analogue unit generation simulation
After ACK, the SYN/ACK is abandoned.
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