CN104754760B - A kind of Packet Service method for reconstructing and terminal - Google Patents
A kind of Packet Service method for reconstructing and terminal Download PDFInfo
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- CN104754760B CN104754760B CN201310738090.XA CN201310738090A CN104754760B CN 104754760 B CN104754760 B CN 104754760B CN 201310738090 A CN201310738090 A CN 201310738090A CN 104754760 B CN104754760 B CN 104754760B
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- tcp connection
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- effective
- rab
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/18—Management of setup rejection or failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/161—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/163—In-band adaptation of TCP data exchange; In-band control procedures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/06—Transport layer protocols, e.g. TCP [Transport Control Protocol] over wireless
Abstract
The embodiment of the invention discloses a kind of Packet Service method for reconstructing and terminals, for accelerating the rate of RAB reconstruction.The method comprise the steps that terminal record there is currently each TCP connection, after RAB is disconnected, terminal judge there is currently each TCP connection in the presence or absence of effective TCP connection, effective TCP connection if it exists, then terminal triggering RAB reconstruction process.So that terminal does not need the reconstruction for waiting retransmission timer to trigger RAB again after RAB is disconnected extremely, the rate of RAB reconstruction is accelerated, reduces transmission and restores the time needed.
Description
Technical field
The present embodiments relate to data communication field more particularly to a kind of Packet Service method for reconstructing and terminals.
Background technique
In LTE/UMTS/GPRS wireless communication system, terminal can pass through EPS bearing activation process after normal boot-strap
Or PDP bearing activation process carries to activate, and the grouping necessary IP address of field communication is obtained by the process, terminal exists
After obtaining IP address, so that it may which accessing group data network carries out relevant Packet Service.After terminal obtains IP address, the IP
Address always exists and effectively, initiates load bearing deactivation process except nonterminal and deletes the carrying.In terminal baseband side, it is grouped industry
The transmission of business transmission data is carried out on radio access bearer (RAB, RadioAccess Bearer), and RAB is not always
Existing, when RAB is not present, although terminal possesses effective IP address, but cannot normal transmitting and receiving packet data.
When terminal is when needing to send packet data or network has data to need to send packet data to terminal, meeting
Start RAB reconstruction process, after RAB is rebuild successfully, data can normally be had sent.The Fast retransmission and recovery plan of TCP/IP
Slightly (FRR, Fast Retransmit and Recovery) is a kind of congestion avoidance algorithm, it can the data lost of fast quick-recovery
Packet: if delivery section receives three duplicate acknowledgments, the data segment that it can assume that confirmation part is pointed out is lost, and retransmits this immediately
The data segment lost a bit.
Due to the particularity of wireless communication system, in some scenarios (for example wireless signal is poor that Radio Link is caused to lose
Lose, terminal or the interim exception of network etc.), it will lead to RAB and discharged extremely, cause the packet loss of packet data.Under the scene,
Data transmission for transmission control protocol (TCP, Transmission Control Protocol) type, since RAB is disconnected
Afterwards, terminal can not receive any data, will not send any TCP acknowledgment packet, so after data-bag lost, TCP/IP
Fast retransmission and recovery policy in agreement can not work, and RAB can not be rebuild in time, only come by the retransmission timer of TCP
It triggers RAB to rebuild, influences the experience of user.
Summary of the invention
The embodiment of the invention provides a kind of Packet Service method for reconstructing and terminals, for accelerating RAB under abnormality
The rate of reconstruction.
A kind of Packet Service method for reconstructing, comprising:
Terminal record there is currently each transmission control protocol TCP connection；
When radio access bearer RAB is disconnected, terminal judgement it is described there is currently each TCP connection in whether there is
Effective TCP connection；
Effective TCP connection if it exists, then the terminal triggers RAB reconstruction process.
A kind of terminal, comprising:
Linkage record module, for record there is currently each transmission control protocol TCP connection；
Judgment module, for when radio access bearer RAB is disconnected, judging described the working as of the linkage record module record
It whether there is effective TCP connection in preceding existing each TCP connection；
Module is rebuild, for determining to trigger RAB reconstruction process there are when effective TCP connection when the judgment module.
As can be seen from the above technical solutions, the embodiment of the present invention have the advantage that terminal record there is currently it is each
TCP connection, when RAB disconnect after, terminal judge there is currently each TCP connection in whether there is effective TCP connection, if it exists
Effective TCP connection, then terminal triggers RAB reconstruction process, in this way, when RAB is disconnected extremely, effective TCP connection if it exists,
The reconstruction that terminal no longer needs to wait retransmission timer to trigger RAB, but the reconstruction process of triggering RAB can be actively gone, in this way
It saves RAB under abnormality and rebuilds the time for needing to wait, accelerate the rate of RAB reconstruction, enable TCP data faster
It transfers out, improves the Experience Degree of user.
Detailed description of the invention
Fig. 1 is one flow diagram of Packet Service method for reconstructing in the embodiment of the present invention；
Fig. 2 is another flow diagram of Packet Service method for reconstructing in the embodiment of the present invention；
Fig. 3 is another flow diagram of Packet Service method for reconstructing in the embodiment of the present invention；
Fig. 4 is one structural schematic diagram of terminal in the embodiment of the present invention；
Fig. 5 is another structural schematic diagram of terminal in the embodiment of the present invention；
Fig. 6 is another structural schematic diagram of terminal in the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those skilled in the art's every other implementation obtained without making creative work
Example, shall fall within the protection scope of the present invention.
Referring to Fig. 1, Packet Service method for reconstructing one embodiment includes: in the embodiment of the present invention
101, terminal record there is currently each TCP connection；
When terminal and network side need to carry out data transmission, TCP connection can be established with network side, in packet data transmission
In the process, terminal record there is currently each TCP connection.
102, terminal judge there is currently each TCP connection in the presence or absence of effective TCP connection；
When RAB is disconnected, terminal judges in current existing each TCP connection with the presence or absence of effective TCP connection.
103, effective TCP connection if it exists, then terminal triggers RAB reconstruction process.
If terminal judges in current existing each TCP connection that terminal triggers RAB weight there are effective TCP connection
Build process.
In the embodiment of the present invention, terminal record there is currently each TCP connection, when RAB disconnect after, terminal judgement currently deposit
Each TCP connection in whether there is effective TCP connection, effective TCP connection if it exists, then terminal triggering RAB was rebuild
Journey, in this way, effective TCP connection, terminal no longer need to wait retransmission timer to trigger if it exists when RAB is disconnected extremely
The reconstruction of RAB, but the reconstruction process of triggering RAB can be actively gone, RAB under abnormality is saved in this way rebuilds what needs waited
Time accelerates the rate of RAB reconstruction, TCP data is transferred out faster, improves the Experience Degree of user.
In above example, terminal judge there is currently each TCP connection in the presence or absence of effective TCP connection, in reality
In the application of border, terminal can judge whether the TCP connection is effective according to the mode field in TCP data packet, when RAB is reconstructed into
After function, terminal can also to there is currently each TCP connection in effective TCP connection and invalid TCP connection locate respectively
Reason, is below specifically described the Packet Service method for reconstructing in the embodiment of the present invention, referring to Fig. 2, the embodiment of the present invention
Middle another embodiment of Packet Service method for reconstructing includes:
201, terminal record there is currently each TCP connection；
When terminal and network side need to carry out data transmission, TCP connection can be established with network side, in packet data transmission
In the process, terminal record there is currently each TCP connection.
Terminal record there is currently each TCP connection mode there are many kinds of, terminal can pass through record one TCP connection
Source port and destination port record a TCP connection jointly, TCP can also be recorded by remaining mode and is connected
It connects, is not construed as limiting herein.Terminal can also pass through the source port and destination in the packet header of TCP data packet in analysis TCP connection
Mouthful, to judge whether TCP connection belonging to the TCP has been recorded.
It should be noted that terminal record there is currently each TCP connection when, can recorde there is currently all TCP
Connection, can also randomly select according to a certain percentage there is currently each TCP connection, be not construed as limiting herein.
202, terminal parsing there is currently each TCP connection on mode field in TCP data packet；
Terminal record there is currently each TCP connection after, parse there is currently each TCP connection in TCP data packet
Mode field obtains the parameter of mode field in TCP data packet in each TCP connection；
In the available mode field of terminal in TCP header field the parameter of the position FIN and the position SYNC parameter, the FIN
Whether the parameter of position is invalid state for TCP connection belonging to TCP data packet where indicating it, the parameter of the position SYNC
It whether is effective status for TCP connection belonging to TCP data packet where indicating it.
203, terminal is according to mode field, determine there is currently each TCP connection whether be in effective status, recorded
As a result；
After terminal parses the mode field in each TCP connection in TCP data packet, according to the mode field, determine current
Whether existing each TCP connection is in effective status, obtains record result；
Terminal can search the parameter of the parameter of the position FIN and the position SYNC in TCP header field in each mode field, if
The parameter of the position FIN is 1 in TCP header field, then the TCP connection where recording TCP data packet belonging to the TCP header field is nothing
Effect state, if the parameter of the position SYNC is 1 in TCP header field, where recording TCP data packet belonging to the TCP header field
TCP connection is effective status.
It should be noted that step 202 and step 203 can execute after RAB disconnection, it can also be disconnected in RAB
Preceding execution, is not construed as limiting herein.
204, terminal search record as a result, judge there is currently each TCP connection in whether there is TCP connection to be in effective shape
State；
When RAB disconnect after, terminal search record as a result, determine there is currently each TCP connection whether there is TCP connection to be in
Effective status.
In a practical situation, RAB disconnect the reason of can there are many kinds of, can be Radio Link Failure, be also possible to end
The local exception at end, can also be that network discharges RAB, is not construed as limiting herein.
If thering is TCP connection to be in effective status in record result, 205 are thened follow the steps；
If there is no TCP connection to be in effective status in record result, 206 are thened follow the steps.
205, terminal is determined there are effective TCP connection, executes step 207；
If there is TCP connection to be in effective status in record result, terminal is determined there are effective TCP connection, executes step
Rapid 207.
206, other treatment processes are executed；
If not having TCP connection to be in effective status in record result, terminal executes other treatment processes.
Whether terminal can detecte in terminal has the data of caching to need to send, if there is the data of caching to need to send,
Terminal can directly trigger RAB reconstruction process, if the data not cached need to send, terminal can suspend reconstruction process, eventually
End can also wait retransmission timer to rebuild to trigger RAB, be not construed as limiting herein without data cached detection.
207, terminal triggers RAB reconstruction process；
When terminal determines that terminal triggers RAB reconstruction process, request resume data transmission there are when effective TCP connection.
208, terminal retransmits the data packet cached in effective TCP connection；
After RAB is rebuild successfully, terminal retransmits the data packet cached in effective TCP connection, it is ensured that up direction
Upper no data packet discarding, which includes TCP data packet and IP data packet.
It is understood that if after RAB rebuilds successfully, there is currently each TCP connection in do not have in effective TCP connection
The data packet of caching, terminal can not also execute the step of retransmitting the data packet cached in effective TCP connection, not limit herein
It is fixed.
209, terminal deletion there is currently each TCP connection in cache in invalid TCP connection and invalid TCP connection
Data packet.
After RAB is rebuild successfully, terminal deletion there is currently each TCP connection in invalid TCP connection and invalid TCP
The data packet cached in connection.
It should be noted that in practical applications, after RAB is rebuild successfully, if the storage resource and process resource of terminal are filled
Foot, terminal can not also delete there is currently each TCP connection in cache in invalid TCP connection and invalid TCP connection
Data packet is not construed as limiting herein.
In the embodiment of the present invention, terminal first parses the mode field of TCP data packet in TCP connection, according in mode field
Parameter judge whether the TCP connection is in effective status, determine whether to be rebuild in RAB there are effective TCP connection
Success after, terminal can also retransmit the data packet cached in effective TCP connection, can also delete there is currently each TCP company
The data packet cached in invalid TCP connection and invalid TCP connection is connect, has on the one hand refined judged whether there is in this way
The process of the TCP connection of effect, so that more accurate to the judgement with the presence or absence of effective TCP connection, processing speed is more accelerated
Speed, on the other hand, delete there is currently each TCP connection in the data that cache in invalid TCP connection and invalid TCP connection
Packet can also save the resource in terminal, reinforce terminal to avoid these invalid data are sent to the occupancy of existing transmission link
Handle the ability of other tasks.
In practical applications, terminal can also save newest uplink TCP acknowledgment packet before RAB disconnection, disconnected in RAB
After opening and being reconstructed into function, the TCP acknowledgment packet is retransmitted, the Packet Service method for reconstructing in the embodiment of the present invention is carried out below detailed
Illustrate, referring to Fig. 3, another embodiment of Packet Service method for reconstructing includes: in the embodiment of the present invention
301, terminal record there is currently each TCP connection；
When terminal and network side need to carry out data transmission, TCP connection can be established with network side, in packet data transmission
In the process, terminal record there is currently each TCP connection.
Terminal record there is currently each TCP connection mode there are many kinds of, terminal can pass through record one TCP connection
Source port and destination port record a TCP connection jointly, TCP can also be recorded by remaining mode and is connected
It connects, is not construed as limiting herein.Terminal can also pass through the source port and destination in the packet header of TCP data packet in analysis TCP connection
Mouthful, to judge whether TCP connection belonging to the TCP has been recorded.
It should be noted that terminal record there is currently each TCP connection when, can recorde there is currently all TCP
Connection, can also randomly select according to a certain percentage there is currently each TCP connection, be not construed as limiting herein.
302, terminal parsing there is currently each TCP connection on mode field in TCP data packet；
Terminal record there is currently each TCP connection after, parse there is currently each TCP connection in TCP data packet
Mode field obtains the parameter of mode field in TCP data packet in each TCP connection；
In the available mode field of terminal in TCP header field the parameter of the position FIN and the position SYNC parameter, the FIN
Whether the parameter of position is invalid state for TCP connection belonging to TCP data packet where indicating it, the parameter of the position SYNC
It whether is effective status for TCP connection belonging to TCP data packet where indicating it.
303, terminal is according to mode field, determine there is currently each TCP connection whether be in effective status, recorded
As a result；
After terminal parses the mode field in each TCP connection in TCP data packet, according to the mode field, determine current
Whether existing each TCP connection is in effective status, obtains record result；
Terminal can search the parameter of the parameter of the position FIN and the position SYNC in TCP header field in each mode field, if
The parameter of the position FIN is 1 in TCP header field, then the TCP connection where recording TCP data packet belonging to the TCP header field is nothing
Effect state, if the parameter of the position SYNC is 1 in TCP header field, where recording TCP data packet belonging to the TCP header field
TCP connection is effective status.
It should be noted that step 202 and step 203 can execute after RAB disconnection, it can also be disconnected in RAB
Preceding execution, is not construed as limiting herein.
304, terminal saves newest uplink TCP acknowledgment packet；
Terminal obtain indicating there is currently each TCP connection whether be in the record result of effective status after, save newest
Uplink TCP acknowledgment packet, the TCP acknowledgment be there is currently each TCP connection in newest uplink in each effective TCP connection
TCP acknowledgment packet.
305, terminal search record as a result, judge there is currently each TCP connection in whether there is TCP connection to be in effective shape
State；
When RAB disconnect after, terminal search record as a result, determine there is currently each TCP connection whether there is TCP connection to be in
Effective status.
In a practical situation, RAB disconnect the reason of can there are many kinds of, can be Radio Link Failure, be also possible to end
The local exception at end, can also be that network discharges RAB, is not construed as limiting herein.
If thering is TCP connection to be in effective status in record result, 306 are thened follow the steps；
If there is no TCP connection to be in effective status in record result, 307 are thened follow the steps.
306, terminal is determined there are effective TCP connection, executes step 308；
If there is TCP connection to be in effective status in record result, terminal is determined there are effective TCP connection, executes step
Rapid 308.
307, other treatment processes are executed；
If not having TCP connection to be in effective status in record result, terminal executes other treatment processes.
Whether terminal can detecte in terminal has the data of caching to need to send, if there is the data of caching to need to send,
Terminal can directly trigger RAB reconstruction process, if the data not cached need to send, terminal can suspend reconstruction process, eventually
End can also wait retransmission timer to rebuild to trigger RAB, be not construed as limiting herein without data cached detection.
308, terminal triggers RAB reconstruction process；
When terminal determines that terminal triggers RAB reconstruction process, request resume data transmission there are when effective TCP connection.
309, terminal retransmits the data packet cached in effective TCP connection；
After RAB is rebuild successfully, terminal retransmits the data packet cached in effective TCP connection, which includes TCP number
According to packet and IP data packet.
It is understood that if after RAB rebuilds successfully, there is currently each TCP connection in do not have in effective TCP connection
The data packet of caching, terminal can not also execute the step of retransmitting the data packet cached in effective TCP connection, not limit herein
It is fixed.
310, terminal deletion there is currently each TCP connection in cache in invalid TCP connection and invalid TCP connection
Data packet.
After RAB is rebuild successfully, terminal deletion there is currently each TCP connection in invalid TCP connection and invalid TCP
The data packet cached in connection.
It should be noted that in practical applications, after RAB is rebuild successfully, if the storage resource and process resource of terminal are filled
Foot, terminal can not also delete there is currently each TCP connection in cache in invalid TCP connection and invalid TCP connection
Data packet is not construed as limiting herein.
311, terminal profile uplink TCP control packet is surrounded by the permission of prioritised transmission compared to TCP data；
Terminal profile uplink TCP control packet is surrounded by the permission of prioritised transmission compared to TCP data, includes in TCP control packet
Uplink TCP acknowledgment packet.
It should be noted that in practical applications, setting uplink TCP control packet is surrounded by prioritised transmission compared to TCP data
Permission can according to need to carry out, and can also be not construed as limiting herein without setting.
It is understood that setting uplink TCP control packet can be with compared to the opportunity for the permission that TCP data is surrounded by prioritised transmission
It arranges, can be carried out between any two steps according to actual needs, can also be not construed as limiting herein pre-set.
312, terminal retransmits newest uplink TCP acknowledgment packet.
After RAB is rebuild successfully, terminal can be retransmitted newest in the previously stored each effective TCP connection of RAB disconnection
TCP acknowledgment packet.
Further, terminal can be by the TCP acknowledgment packet retransmission three times, and the transmitting terminal to trigger the TCP connection is vertical
Start TCP Fast retransmission and recovery policy (FRR mechanism).
In the embodiment of the present invention, before RAB is disconnected, terminal saves newest uplink TCP acknowledgment packet, lays equal stress in RAB disconnection
After building, the newest uplink TCP acknowledgment packet of terminal repeating transmission is synchronous with transmitting terminal progress data, can guarantee what data were sent in this way
Integrality, and terminal can set the permission that uplink TCP control packet is surrounded by prioritised transmission compared to TCP data, such TCP acknowledgment
Packet can preferentially be sent to network, will effectively avoid network that can not send because TCP acknowledgment packet is not timely received so new
TCP packet the problem of, more further, terminal can be by the TCP acknowledgment packet retransmission three times, to trigger the hair of the TCP connection
Sending end starts FRR mechanism immediately, can more quickly restore packet data transmission in this way and data restore business.
For ease of understanding, have below with a concrete application scene to Packet Service method for reconstructing in the embodiment of the present invention
Body description:
If there are TCP connections (referred to as the first TCP connection) and an instant chat that one browses webpage on present terminal
The TCP connection (referred to as the second TCP connection) of tool；
Terminal is by recording source port and mesh in first TCP connection and the second TCP connection in the packet header of TCP data packet
Port record first TCP connection and the second TCP connection；
Terminal parses the mode field in the first TCP connection and the second TCP connection in TCP data packet；
The parameter that terminal obtains in the first TCP connection the position FIN in TCP header field in data packet is 1, and terminal determines first
TCP connection is in invalid state, and terminal obtains in the second TCP connection that the parameter of the position SYNC is in TCP header field in data packet
1, terminal determines that the second TCP connection is in effective status, and terminal obtains record the first TCP connection of result and is in invalid state, the
Two TCP connections are in effective status；
Terminal saves newest uplink TCP acknowledgment packet in the second TCP connection；
Work as Radio Link Failure, after RAB is disconnected extremely, terminal search record as a result, determine there is currently the first TCP company
It connects and in the second TCP connection, there is the second TCP connection to be in effective status；
There is the second TCP connection to be in effective status since terminal determines in record result, terminal determines that there are effective TCP
Connection；
Terminal triggers RAB reconstruction process, requests resume data transmission；
After RAB is rebuild successfully, terminal retransmits the data packet that caches in the second TCP connection, and delete the first TCP connection and
The data packet cached in first TCP connection；
Terminal profile upload control packet is surrounded by the permission of prioritised transmission compared to TCP data；
Terminal retransmits RAB three times and disconnects newest TCP acknowledgment packet in previously stored second TCP connection, so that transmitting terminal
Start FRR mechanism immediately.
The terminal in the embodiment of the present invention is described below, referring to Fig. 4, one of terminal in the embodiment of the present invention
Embodiment includes:
Linkage record module 401, for record there is currently each TCP connection；
Judgment module 402, for when RAB is disconnected, judge that the linkage record module 401 records it is described there is currently
Each TCP connection in whether there is effective TCP connection；
Module 403 is rebuild, for when the judgment module 402 judgement is there are when effective TCP connection, triggering RAB to be rebuild
Process.
In the embodiment of the present invention, linkage record module 401 record there is currently each TCP connection, when RAB disconnect after, sentence
Disconnected module 402 judge there is currently each TCP connection in whether there is effective TCP connection, effective TCP connection if it exists,
It then rebuilds module 403 and triggers RAB reconstruction process, in this way, effective TCP connection if it exists, terminal is not when RAB is disconnected extremely
The reconstruction for needing to wait retransmission timer to trigger RAB again, but the reconstruction process of triggering RAB can be actively gone, it saves in this way
RAB rebuilds the time for needing to wait under abnormality, accelerates the rate of RAB reconstruction, TCP data is transmitted out faster
It goes, improves the Experience Degree of user.
In above example, judgment module 402 judge there is currently each TCP connection in the presence or absence of effective TCP connect
It connects, in practical applications, judgment module 402 can judge whether the TCP connection has according to the mode field in TCP data packet
Effect, after RAB is rebuild successfully, terminal can also to there is currently each TCP connection in effectively TCP connection and invalid TCP
Connection is respectively processed, and the terminal in the embodiment of the present invention is specifically described below, referring to Fig. 5, the present invention is implemented
Another embodiment of terminal includes: in example
Linkage record module 501, for record there is currently each TCP connection；
Judgment module 502, for when RAB disconnect when, judge linkage record module 501 record there is currently each TCP
It whether there is effective TCP connection in connection；
Module 503 is rebuild, for determining to trigger RAB reconstruction process there are when effective TCP connection when judgment module 502；
In the present embodiment, the terminal further include:
Parsing module 504, for parse linkage record module 501 record there is currently each TCP connection on TCP data
Mode field in packet；
Effective logging modle 505, the mode field for being parsed according to parsing module 504, determine there is currently it is each
Whether TCP connection is in effective status, obtains record result；
Removing module 506, for deleting linkage record module 501 and recording after reconstruction module 503 rebuilds RAB successfully
There is currently each TCP connection in invalid TCP connection；
It should be noted that removing module 506 can choose whether to need according to the actual situation, can also not have in terminal
There is removing module 506, is not construed as limiting herein.
Retransmission module 507, for retransmitting and being cached in effective TCP connection after reconstruction module 503 rebuilds RAB successfully
Data packet, which includes TCP data packet and IP data packet；
The judgment module 502 specifically includes:
State judging unit 5021, for when RAB is disconnected, searching the determining record of effective logging modle 505 as a result, sentencing
It is disconnected there is currently each TCP connection in whether there is TCP connection to be in effective status；
Effective determination unit 5022, for determining that having TCP connection to be in record result has when state judging unit 5021
When effect state, determine that there are effective TCP connections；
Invalidation unit 5023, for determining do not have TCP connection to be in record result when state judging unit 5021
When effective status, other treatment processes are carried out.
In the embodiment of the present invention, parsing module 504 first parses the mode field of TCP data packet in TCP connection, effectively records
Module 505 judges whether the TCP connection is in effective status according to the parameter in mode field, thus state judging unit
5021 and effective determination unit 5022 determine whether there is effective TCP connection, rebuilding after module 503 rebuilds RAB successfully,
Retransmission module 507 can also retransmit the data packet cached in effective TCP connection, removing module 506 can delete there is currently
Each TCP connection in the data packet that caches in invalid TCP connection and invalid TCP connection, on the one hand refined judgement in this way
With the presence or absence of the process of effective TCP connection, so that, processing more accurate to the judgement with the presence or absence of effective TCP connection
Speed is quicker, on the other hand, delete there is currently each TCP connection in invalid TCP connection and invalid TCP connection
The data packet of caching can also save the money in terminal to avoid these invalid data are sent to the occupancy of existing transmission link
The ability of other tasks of terminal processes is reinforced in source.
In above example, terminal can also save newest uplink TCP acknowledgment packet before RAB disconnection, disconnected in RAB
After opening and being reconstructed into function, the TCP acknowledgment packet is retransmitted, the terminal in the embodiment of the present invention is described in detail below, is please referred to
Fig. 6, another embodiment of terminal includes: in the embodiment of the present invention
Linkage record module 601, for record there is currently each TCP connection；
Judgment module 602, for when RAB disconnect when, judge linkage record module 601 record there is currently each TCP
It whether there is effective TCP connection in connection；
Module 603 is rebuild, for determining to trigger RAB reconstruction process there are when effective TCP connection when judgment module 602；
The terminal further include:
Parsing module 604, for parse linkage record module 601 record there is currently each TCP connection on TCP data
Mode field in packet；
Effective logging modle 605, the mode field for being parsed according to parsing module 604, determine there is currently it is each
Whether TCP connection is in effective status, obtains record result；
Removing module 606, for deleting linkage record module 601 and recording after reconstruction module 603 rebuilds RAB successfully
There is currently each TCP connection in invalid TCP connection；
It should be noted that removing module 606 can choose whether to need according to the actual situation, can also not have in terminal
There is removing module 604, is not construed as limiting herein.
Retransmission module 607, for retransmitting and being cached in effective TCP connection after reconstruction module 603 rebuilds RAB successfully
Data packet, which includes TCP data packet and IP data packet；
The judgment module 602 specifically includes:
State judging unit 6021, for when RAB is disconnected, searching the determining record of effective logging modle 605 as a result, sentencing
It is disconnected there is currently each TCP connection in whether there is TCP connection to be in effective status；
Effective determination unit 6022, for determining that having TCP connection to be in record result has when state judging unit 6021
When effect state, determine that there are effective TCP connections；
Invalidation unit 6023, for determining do not have TCP connection to be in record result when state judging unit 5021
When effective status, other treatment processes are carried out；
In the present embodiment, the terminal further include:
Preserving module 608, for saving newest uplink TCP acknowledgment packet, which is connection note
Record that module 601 records there is currently each TCP connection in newest uplink TCP acknowledgment packet in each effective TCP connection；
Module 609 is retransmitted, for it is true to retransmit the newest uplink TCP that preserving module 608 saves after RAB is rebuild successfully
Recognize packet；
Authority setting module 610 compares the permission that TCP data is surrounded by prioritised transmission for setting uplink TCP control packet, should
It include the uplink TCP acknowledgment packet in uplink TCP control packet.
It is understood that authority setting module 610 can choose whether to need according to the actual situation, it can also in the terminal
With no authority setting module 608, it is not construed as limiting herein.
In the embodiment of the present invention, before RAB is disconnected, preserving module 608 saves newest uplink TCP acknowledgment packet, disconnected in RAB
After opening and rebuilding, retransmitting module 609, to retransmit newest uplink TCP acknowledgment packet and transmitting terminal progress data synchronous, in this way can be with
Guarantee the integrality that data are sent, and authority setting module 610 can set uplink TCP control packet and be surrounded by compared to TCP data
The permission of prioritised transmission, such TCP acknowledgment packet can preferentially be sent to network, effectively will avoid network because without timely in this way
The problem of receiving TCP acknowledgment packet and can not sending new TCP packet, more further, retransmitting module 609 can be by the TCP acknowledgment
Three times, the transmitting terminal to trigger the TCP connection starts FRR mechanism to packet retransmission immediately, can more quickly restore in this way point
The transmission of group data and data restore business.
Above-described embodiment in order to facilitate understanding, the below friendship with above-mentioned terminal each unit in a concrete application scene
Mutual process is illustrated:
If there are TCP connections (referred to as the first TCP connection) and an instant chat that one browses webpage on present terminal
The TCP connection (referred to as the second TCP connection) of tool；
Linkage record module 601 is by recording in first TCP connection and the second TCP connection in the packet header of TCP data packet
Source port and destination port record first TCP connection and the second TCP connection；
Parsing module 604 parses the mode field in the first TCP connection and the second TCP connection in TCP data packet；
Effective logging modle 605 obtains in the first TCP connection that the parameter of the position FIN is 1 in TCP header field in data packet,
Effective logging modle 605 determines that the first TCP connection is in invalid state, and effective logging modle 605 obtains number in the second TCP connection
According to the parameter of the position SYNC is 1 in TCP header field in packet, terminal determines that the second TCP connection is in effective status, effectively record mould
Block 605 obtains record the first TCP connection of result and is in invalid state, and the second TCP connection is in effective status；
Preserving module 608 saves newest uplink TCP acknowledgment packet in the second TCP connection；
Work as Radio Link Failure, after RAB is disconnected extremely, state judging unit 6021 searches record as a result, judging current
In existing first TCP connection and the second TCP connection, there is the second TCP connection to be in effective status；
Judging to record in result due to state judging unit 6021 has the second TCP connection to be in effective status, effectively really
Order member 6022 determines that there are effective TCP connections；
It rebuilds module 603 and triggers RAB reconstruction process, request resume data transmission；
After RAB is rebuild successfully, retransmission module 607 retransmits the data packet cached in the second TCP connection, removing module 606
Delete the data packet cached in the first TCP connection and the first TCP connection；
Authority setting module 610 sets the permission that upload control packet is surrounded by prioritised transmission compared to TCP data；
It retransmits module 609 and retransmits newest TCP acknowledgment packet in previously stored second TCP connection of RAB disconnection three times, so that
Transmitting terminal starts FRR mechanism immediately.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention
Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, RandomAccess Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (12)
1. a kind of Packet Service method for reconstructing characterized by comprising
Terminal record there is currently each transmission control protocol TCP connection；
When radio access bearer RAB is disconnected, terminal judgement it is described there is currently each TCP connection in the presence or absence of effective
TCP connection；
Effective TCP connection if it exists, then the terminal triggers RAB reconstruction process.
2. the method according to claim 1, wherein the method also includes:
After RAB is rebuild successfully, described in the terminal deletion there is currently each TCP connection in invalid TCP connection and described
The data packet cached in invalid TCP connection.
3. according to the method described in claim 2, it is characterized in that, the method also includes:
After RAB is rebuild successfully, the terminal retransmits the data packet cached in the effective TCP connection, the data packet packet
Include TCP data packet and IP data packet.
4. the method according to claim 1, wherein
The method also includes:
Terminal parsing it is described there is currently each TCP connection on mode field in TCP data packet；
The terminal according to the mode field, determine it is described there is currently each TCP connection whether be in effective status, obtain
Record result；
Terminal judgement it is described there is currently each TCP connection in the presence or absence of effective TCP connection include:
The terminal search the record as a result, judgement it is described there is currently each TCP connection in whether there is TCP connection to be in have
Effect state；
If there is TCP connection to be in effective status in the record result, the terminal determines that there are effective TCP connections.
5. method according to claim 1 to 4, which is characterized in that
It is described when radio access bearer RAB is disconnected, terminal judgement it is described there is currently each TCP connection in whether there is
Before the step of effective TCP connection further include:
The terminal saves newest uplink TCP acknowledgment packet, the newest uplink TCP acknowledgment packet be it is described there is currently it is each
Newest uplink TCP acknowledgment packet in each effective TCP connection in TCP connection；
The method also includes:
After RAB is rebuild successfully, the terminal retransmits the newest uplink TCP acknowledgment packet.
6. according to the method described in claim 5, it is characterized in that, the terminal retransmits the newest uplink TCP acknowledgment packet
Before further include:
The terminal profile uplink TCP control packet is surrounded by the permission of prioritised transmission, the uplink TCP control packet compared to TCP data
In include the uplink TCP acknowledgment packet.
7. a kind of terminal characterized by comprising
Linkage record module, for record there is currently each transmission control protocol TCP connection；
Judgment module, for when radio access bearer RAB is disconnected, judging described currently the depositing of the linkage record module record
Each TCP connection in whether there is effective TCP connection；
Module is rebuild, for determining to trigger RAB reconstruction process there are when effective TCP connection when the judgment module.
8. terminal according to claim 7, which is characterized in that the terminal further include:
Removing module, for after the reconstruction module rebuilds RAB successfully, deleting the current of the linkage record module record
Invalid TCP connection in existing each TCP connection.
9. terminal according to claim 8, which is characterized in that the terminal further include:
Retransmission module, for being cached in the re-transmission effective TCP connection after reconstruction module rebuilds RAB successfully
Data packet, the data packet include TCP data packet and IP data packet.
10. terminal according to claim 7, which is characterized in that
The terminal further include:
Parsing module, for parse linkage record module record there is currently each TCP connection in TCP data packet
Mode field；
Effective logging modle, the mode field for being parsed according to the parsing module, determine it is described there is currently each TCP
Whether connection is in effective status, obtains record result；
The judgment module specifically includes:
State judging unit, for when radio access bearer RAB is disconnected, searching the record knot that effective logging modle determines
Fruit, judgement it is described there is currently each TCP connection in whether there is TCP connection to be in effective status；
Effective determination unit, for when the state judging unit determine record result in there is TCP connection to be in effective status when,
Determine that there are effective TCP connections.
11. terminal according to any one of claims 7 to 10, which is characterized in that the terminal further include:
Preserving module, for saving newest uplink TCP acknowledgment packet, the newest uplink TCP acknowledgment packet is connection note
Record module record there is currently each TCP connection in newest uplink TCP acknowledgment packet in each effective TCP connection；
Module is retransmitted, the newest uplink TCP acknowledgment packet saved for after RAB is rebuild successfully, retransmitting the preserving module.
12. terminal according to claim 11, which is characterized in that the terminal further include:
Authority setting module compares the permission that TCP data is surrounded by prioritised transmission, the uplink for setting uplink TCP control packet
It include the uplink TCP acknowledgment packet in TCP control packet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310738090.XA CN104754760B (en) | 2013-12-27 | 2013-12-27 | A kind of Packet Service method for reconstructing and terminal |
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| CN201310738090.XA CN104754760B (en) | 2013-12-27 | 2013-12-27 | A kind of Packet Service method for reconstructing and terminal |
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| CN104754760B true CN104754760B (en) | 2019-05-14 |
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| CN108206812A (en) * | 2016-12-19 | 2018-06-26 | 展讯通信（上海）有限公司 | The method, device and mobile terminal of fast quick-recovery transmission control protocol connection |
| CN111479293B (en) * | 2020-04-16 | 2023-07-25 | 展讯通信（上海）有限公司 | Data processing method and device |
| CN115086397A (en) * | 2022-06-10 | 2022-09-20 | 中国银行股份有限公司 | TCP connection management method and system |
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| EP1408658A3 (en) * | 2002-08-13 | 2009-07-29 | Innovative Sonic Limited | Handling of an unrecoverable error on a dedicated channel of a radio link |
| CN1499760A (en) * | 2002-11-05 | 2004-05-26 | ��������ͨ�ż����о�����˾ | Method for supporting services in multimedia broadcast and multicast by carrying connection through signaling in Lu interface |
| CN100435596C (en) * | 2005-09-02 | 2008-11-19 | 大唐移动通信设备有限公司 | Method for rapid recovery of user's set communication |
| CN1968198A (en) * | 2006-06-16 | 2007-05-23 | 华为技术有限公司 | Wireless access loaded packet data service QoS management method. |
| CN101931898B (en) * | 2009-06-26 | 2014-03-05 | 华为技术有限公司 | Method, device and system for transmitting user plane data |
| CN102223658B (en) * | 2010-04-19 | 2016-06-29 | 中兴通讯股份有限公司 | A kind of method processing Radio Link Failure and via node |
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