CN107659966A - Data transmission method, the network equipment, user terminal, gateway device - Google Patents
Data transmission method, the network equipment, user terminal, gateway device Download PDFInfo
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- CN107659966A CN107659966A CN201610597396.1A CN201610597396A CN107659966A CN 107659966 A CN107659966 A CN 107659966A CN 201610597396 A CN201610597396 A CN 201610597396A CN 107659966 A CN107659966 A CN 107659966A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
Abstract
The invention provides a kind of data transmission method, the network equipment, user terminal, gateway device.In this method, gateway device is with the addition of in communication network, the gateway device coordinates with UE, Transmission Control Protocol can be terminated on gateway device, that is TCP is established, disconnected and the control message of TCP links all without taking air-link resources again, only transmission includes the simplification packet of a small amount of control information in air-link resources, so as to improve the service efficiency of Radio Link.TCP connections simultaneously are gone directly sector terminal from main website, reduce because wireless link delay causes the possibility of re-transmission, even if occurring to retransmit under the only cable environment between service adaptation gateway and main website, wireless network is not interfered with, so as to improve the transmission performance of wireless network yet.
Description
Technical field
The invention belongs to communication technical field, more particularly to a kind of data transmission method, network are set
Standby, user terminal, gateway device.
Background technology
Wireless Broadband Communication Systems are a kind of comprehensive solutions of smart grid-oriented communication network,
Main business demand is as follows：Power information collection, distribution automation and load pipe with electricity consumption side
Reason, emergency first-aid repair, maintenance and mobile asset visualized management, intelligent power service and electric power
Other business of Internet of Things.The Wireless Broadband Communication Systems network architecture mainly includes：User equipment
(User Equipment, UE), base station (Evolved NodeB, eNodeB), core net
(Evolved Packet Core, EPC).ENodeB carries out signaling by air interface and UE
With the interaction of user face data, its function of performing includes receiving the signaling from UE and upper line number
According to, and signaling response and downlink data are sent to UE.EPC is externally rendered as three interfaces,
S1-MME interface is the signaling interface between EPC and eNodeB, and S1-U interface is EPC
Interface in the user plane between eNodeB, SGI interfaces are EPC and Packet Data Network (Packet
Data Network, PDN, are referred to as main website) between interface.By the said equipment structure
Into Wireless Broadband Communication Systems network, so as to transmit number between user equipment and main website
According to.
It is understood that need to establish before transmitting the data between user equipment and main website
ICP/IP protocol.Transmission Control Protocol is the most common transmission control protocols of Internet, and it can be
User provides reliable communication connection, and suitable for transmission bulk data.In the prior art,
Complete TCP is transmitted before ICP/IP protocol is established, it is necessary between user equipment and main website
Message after message, or compression-tcp protocol header.
The message for the maintenance link for largely needing to transmit is included in Transmission Control Protocol.Although in base station
The message of these maintenance links can play very well under cable environment between-core net-main website
Effect, but under the wireless environment of user terminal-base station, interface-free resources are more nervous,
The message of these maintenance links does not include business information in itself, but occupies eating dishes without rice or wine for preciousness
Resource, influence power system capacity.And the bandwidth under wireless environment is relatively low, time delay is larger, TCP
The data validation and retransmission mechanism of agreement undoubtedly can all aggravate the congestion of Radio Link, further lead
There is capacity reduction in cause system.Directly establishing TCP connections also results in wireless communication system simultaneously
Internal IP is exposed to user, is unfavorable for the flexibility of networking.
The content of the invention
The invention provides a kind of wireless link signals transmission method, service adaptation gateway, base band
Communicator, to overcome in the prior art when establishing TCP connections, terminal-base station without
Included in the Transmission Control Protocol message transmitted under thread environment largely without the maintenance link of business information
Message, take wireless environment interface-free resources the defects of.
In a first aspect, the invention provides a kind of data transmission method, including：
First network equipment is in the TCP companies for detecting that the first communication equipment for being linked into itself is initiated
When connecing foundation request or being connected notification message with the TCP of the first communication equipment for indicating to establish, build
It is vertical to be connected with the TCP of the first communication equipment；And initiate TCP connections foundation in the first communication equipment and ask
When asking, the second network for asking the second asked communication equipment to be accessed is established to the TCP connections
Equipment sends TCP connection notification messages；It is used to indicate the second net in the TCP connections notification message
Network equipment is established TCP with the second communication equipment and is connected；
First network equipment is receiving business number of first communication equipment by TCP linkup transmits
During according to bag, the simplification packet of control information is included according to business data packet construction, and will
The simplified packet is sent to second network equipment；Receiving the transmission of second network equipment
, will by the TCP connections between first network equipment and the first communication equipment when simplifying packet
The simplified packet is reduced to business data packet and is sent to the first communication equipment；
Wherein, the first network equipment is UE, and second network equipment is gateway device；
Or the first network equipment is gateway device, second network equipment is UE.
Alternatively,
First network equipment disconnects in the first communication device requests to be connected with the TCP of the second communication equipment
When connecing, disconnection is connected with the TCP of the first communication equipment；And sent to second network equipment for referring to
Show that disconnection disconnects message with the TCP of the second communication equipment TCP being connected；
First network equipment disconnects and first in the instruction that is used for for receiving the transmission of second network equipment
When the TCP of the TCP connections of communication equipment disconnects message, disconnect and the first communication equipment
TCP connections.
Alternatively, first network equipment the first communication equipment initiate TCP connections establish ask when,
Second network equipment for asking the second asked communication equipment to be accessed is established to the TCP connections
TCP connection notification messages are sent, including：
First network equipment initiates TCP connections and established to ask and receive the in the first communication equipment
During the TCP traffic packet that one communication equipment is sent, establish what is asked to the TCP connections
Second network equipment that second communication equipment is accessed sends TCP connection notification messages.
Second aspect, present invention also offers a kind of data transmission method, including：
User terminal detect need to establish itself send TCP with the second communication equipment and be connected when,
The gateway device accessed to the second communication equipment sends TCP connection notification messages；The TCP
It is used to indicate that the gateway device is established TCP with the second communication equipment and is connected in connection notification message；
When needing to send data to the second communication equipment, the simplification data of business datum will be carried
The gateway device is sent in bag, so that the gateway device leads to the business datum received
Itself TCP linkup transmit between the second communication equipment is crossed to the second communication equipment；And receive institute
The simplification packet of gateway device transmission is stated, obtains business datum therein.
Alternatively, including：
User terminal is when needing disconnection to be connected with the second communication equipment transmission TCP, to the gateway
Equipment sends TCP connections and disconnects message；The TCP connections disconnect to be used to indicate the net in message
Equipment disconnection is closed to be connected with the TCP that the second communication equipment is established.
The third aspect, the invention provides a kind of data transmission method, including：
Gateway device is established and the when receiving the TCP connection notification messages of user terminal transmission
The TCP connections of two communication equipments；The TCP connections notification message is used to indicate the gateway device
TCP is established with the second communication equipment to be connected；
Gateway device is when receiving the business data packet of the second communication equipment transmission, by the letter
Change packet and be sent to user terminal；When receiving the simplification packet of user terminal transmission,
The business datum simplified in packet is passed through into the TCP between gateway device and the second communication equipment
Linkup transmit is to the second communication equipment.
Fourth aspect, the invention provides a kind of network equipment, including：
First connection unit, for detecting what the first communication equipment for being linked into itself was initiated
TCP connections are established request or disappeared for indicating that foundation is connected notice with the TCP of the first communication equipment
During breath, foundation is connected with the TCP of the first communication equipment；And initiate TCP in the first communication equipment
When request is established in connection, established to the TCP connections and ask the second asked communication equipment to be accessed
Opposite end the network equipment send TCP connection notification messages；Used in the TCP connections notification message
TCP is established in instruction peer network device with the second communication equipment to be connected；
First processing units, receiving business number of first communication equipment by TCP linkup transmits
During according to bag, the simplification packet of control information is included according to business data packet construction, and will
The simplified packet is sent to second network equipment；Receiving the transmission of second network equipment
, will by the TCP connections between first network equipment and the first communication equipment when simplifying packet
The simplified packet is reduced to business data packet and is sent to the first communication equipment；
Wherein, the network equipment is UE, and the network equipment of the opposite end is gateway device；Or
Person, the network equipment are gateway device, and the network equipment of the opposite end is UE.
5th aspect, present invention also offers a kind of user terminal, including：
Second connection unit, for detecting that need to establish itself sends with the second communication equipment
During TCP connections, disappear to the gateway device transmission TCP connections notice that the second communication equipment is accessed
Breath；It is used to indicate that the gateway device is built with the second communication equipment in the TCP connections notification message
Vertical TCP connections；
Second processing unit, for when needing to send data to the second communication equipment, will carry
The gateway device is sent in the simplification packet of business datum, so that the gateway device will
The business datum received passes through itself TCP linkup transmit between the second communication equipment to
Two communication equipments；And the simplification packet that the gateway device is sent is received, obtain industry therein
Business data.
6th aspect, present invention also offers a kind of gateway device, including：
3rd connection unit, for receiving the TCP connection notification messages of user terminal transmission
When, establish the TCP established with the second communication equipment and be connected；The TCP connections notification message is used for
Indicate that the gateway device is established TCP with the second communication equipment and is connected；
3rd processing unit, for receive the second communication equipment transmission business data packet when,
The simplified packet is sent to user terminal；Receiving the simplification number of user terminal transmission
During according to bag, by the business datum simplified in packet by gateway device and the second communication equipment it
Between TCP linkup transmits to the second communication equipment.
Data transmission method provided by the invention establishes mode compared to existing TCP, in communication network
Gateway device is with the addition of in network, the gateway device coordinates with UE, and Transmission Control Protocol can be caused by end
Knot is on gateway device, that is to say, that the control message of TCP foundation, disconnection and TCP links is not
Air-link resources can be taken again, are only transmitted in air-link resources and are removed segment message header
The simplification packet obtained afterwards, so as to improve the service efficiency of Radio Link, particularly with small
The transmission advantage of data is especially apparent.TCP connections simultaneously are gone directly sector terminal from main website,
Reduce because wireless link delay causes the possibility of re-transmission, be also only to exist even if occurring to retransmit
Under cable environment between service adaptation gateway and main website, wireless network is not interfered with, so as to carry
The transmission performance of high wireless network.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below
The required accompanying drawing used is briefly described in being described to embodiment, it should be apparent that, under
Accompanying drawing in the description of face is only some examples of the present invention, for those of ordinary skill in the art
For, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is that network provided by the invention opens up benefit structural representation；
Fig. 2 is that another network provided by the invention opens up benefit structural representation；
Fig. 3 is a kind of UE provided by the invention flow chart；
Fig. 4 is transmission of radio links data frame format schematic diagram provided by the invention；
Fig. 5 is a kind of flow chart of gateway device provided by the invention；
Fig. 6 is the transmission of radio links data frame format schematic diagram after encapsulation provided by the invention；
Fig. 7 is another UE provided by the invention flow chart；
Fig. 8 is TCP connection building process figure provided by the invention；
Fig. 9 is TCP connections disconnection process figure provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical side in the embodiment of the present invention
Case is clearly and completely described, it is clear that described embodiment is only the present invention one
Divide embodiment, rather than whole embodiments.It is general based on the embodiment in the present invention, this area
The every other embodiment that logical technology people is obtained under the premise of creative work is not made, all
Belong to the scope of protection of the invention.
The embodiments of the invention provide a kind of data transmission method, can apply to as shown in Figure 1
In communication network, including sector terminal, UE, base station eNodeB, core net EPC, gateway are set
Standby SAG and main website.Wherein, sector terminal here is the intelligent terminal being generally understood that, example
Such as mobile phone other-end equipment；Here UE be sector terminal in baseband communication device, example
3G, 4G protocol chip in such as sector terminal；Here gateway device SAG is main website service
The gateway device of device access.Here UE is connected with base station by wireless communication, here
Wire communication connection is carried out by optical fiber between base station, core net, gateway device and main website.
In addition, the interface between gateway device SAG and EPC in Fig. 1 is SAI (Service Agent
Interface), the interface of system external main website is SGI mouths.Gateway device can be led to flexible deployment
In communication network, can individually it be deployed on a server, the SAI mouth phases of a network interface card and EPC
Even, another network interface card is connected to main website as SGI mouths by interchanger；Can also as shown in Fig. 2
It is deployed on EPC server, is connected by EPC SGI mouths with main website, passed through with EPC
Socket communicates.
Data transmission method provided in an embodiment of the present invention is established compared to existing ICP/IP protocol
With link maintenance transmission method, by between core net and main website add gateway device and with row
UE in industry terminal cooperates, so as to which Transmission Control Protocol is terminated in into UE and gateway device
On, that is to say, that the control message of TCP foundation, disconnection and TCP links is wireless all without taking again
The class of 1 byte is also only added in link circuit resource, normal business transmission on the basis of business datum
Type information, so as to improve the service efficiency of Radio Link, particularly with the transmission advantage of small data
It is especially apparent.
Method provided in an embodiment of the present invention can apply in plurality of application scenes.It is for example, right
For sector terminal and UE, the protocol stack for storing Transmission Control Protocol is likely located at industry end
Side, or positioned at UE sides.Below in conjunction with the accompanying drawings, respectively to method provided by the invention this two
Data communication flow journey in kind application scenarios is described in detail.
(1) protocol stack for being used to store Transmission Control Protocol is located at sector terminal side
For gateway device side, in Transmission Control Protocol foundation and data transfer, it is performed
The step of as shown in figure 3, including：
S1, after UE successfully adheres to, gateway device can receive the UE sent by core net EPC
State instruction, the notification gateway equipment UE have adhered to；That is notification gateway equipment UE
It has been connected in the communication network of gateway device connection；
S2, gateway device parsing UE state indication messages, are defined as UE attachment instructions, so as to really
Determine UE whether normal work；
The UE of S3, gateway device in state instruction IMSI, should to subscription data library inquiry
The information such as UE IP address, the agreement of support, so as to confirm ability, species etc. corresponding to the UE
Deng, such as number corresponding to the UE is what type of number, or the UE whether support 3G or
4G networks etc..It is understood that above three step is for so that gateway device is true
Recognize UE information and state；
S4, protocol type corresponding to UE is judged, if protocol type corresponding to UE requires that main website makees
For TCP client and sector terminal as service end when, then gateway device start TCP service
Device, monitor the designated port being connected with main website；
S5, when main website triggering establish TCP connections when, gateway device is built as server and main website
Vertical connection；That is, at this moment gateway device can substitute sector terminal as service end with making
TCP connections are established for the main website of client；
S6, establish after TCP is connected with main website, gateway device etc. is to be received to be sent out from main website
The business datum sent；
S7, the simplification packet for constructing TCP traffic data, and carry upper business datum and be sent to
UE gateway devices；
Wherein, packet is simplified here to remove at least a portion TCP in TCP traffic packet
Message header obtains, its specific data frame format as shown in figure 4, each field it is specific
Implication is as follows：
(a) field 1---PktType：Type of data packet, pass through service adaptation gateway for distinguishing
The packet of processing, concrete meaning are as follows：
0x4 --- undressed IP data；
0xE --- service adaptation gateway data；
0xD --- configuration data (reserved).
(b) field 2---DataType：Traffic data type, for distinguishing pack arrangement below,
It is specific as follows：
0x1 --- TCP establishes notice, carries IP address, port and business datum (wherein industry
Terminal carries main website IP address and port numbers when doing client, main website carries main website IP when doing client
Address and terminal prot, herein because main website does client, therefore this field carries main website IP
Address and terminal prot)；
0x2 --- TCP disconnects notice, does not carry business datum；
0x3 --- business datum；
0x4 --- 376.3 stipulations multilink datas, the Socket ID of a byte are carried, are stipulations
Specified in link No.；
(c) field 3,8,9---Data body：Represent industry conventions data；
(d) field 4---IP, field 6---port：IP address and port are represented, in DataType
To carry specific IP address and port during 0x1, herein because main website does client, therefore this
One field carries main website IP address and terminal prot；
(e) field 5,7---Socket ID：It is used to carry link No. during specific stipulations；It can manage
Solution, because business datum can also can also pass through a plurality of chain by a link propagation
Road is propagated, therefore Socket ID here can be the link No. of a link, or multilink
Multiple link No.s.
After simplified packet is built, gateway device will simplify packet and carry from main website hair
The business datum sent, core net is together sent to, then corresponding base station is sent to by core net,
Based on the Radio Link between base station and UE by simplify packet be sent to UE so that UE according to
Simplify the control information in packet, substitute main website and establish TCP as client and sector terminal
Connection.
S8, start transmitting and receiving service data after the completion of establishing；
Thus complete when sector terminal is service end, main website is client, main website is whole with industry
The process of TCP connections is established at end.
S9, when judging that protocol type corresponding to UE requires client of the sector terminal as TCP,
And main website as service end when, then the gateway device carrying business number to be received from UE such as always
According to TCP establish message；
S9, receive from UE establish message after, gateway device substitute sector terminal conduct
Client, it is connected with establishing TCP as the main website of service end.Simultaneously by the business number from UE
According to being cached, wait to be sent；
In addition, when gateway device is connected with main website, the IP address of gateway device performance can be with
Sector terminal or UE IP address are inconsistent, and it shows as various ways, such as：Each industry
The corresponding IP of terminal device situation, gateway device can simulate multiple IP address and sector terminal
Equipment corresponds；In another example only an IP can also be used in the case of IP address anxiety
Address and the business datum of the multiple sector terminals of master station transmission.
S10, TCP send the business datum of caching immediately after being successfully established；
Data transmission method provided by the invention establishes mode compared to existing TCP, in communication network
Gateway device is with the addition of in network, the gateway device coordinates with UE, and Transmission Control Protocol can be caused by end
Knot is on gateway device, that is to say, that the control message of TCP foundation, disconnection and TCP links is not
Air-link resources can be taken again, are only transmitted in air-link resources and are removed segment message header
The simplification packet obtained afterwards, so as to improve the service efficiency of Radio Link, particularly with small
The transmission advantage of data is especially apparent.TCP connections simultaneously are gone directly sector terminal from main website,
Reduce because wireless link delay causes the possibility of re-transmission, be also only to exist even if occurring to retransmit
Under cable environment between service adaptation gateway and main website, wireless network is not interfered with, so as to carry
The transmission performance of high wireless network.
For UE sides, in Transmission Control Protocol foundation and data transfer, its step performed
It is rapid as shown in figure 5, including：
The protocol type of UE operations is read when S1, UE start from configuration file；Specifically include row
Industry terminal is as client, main website as service end, or sector terminal is as service end or main website
As client；
S2, when the protocol type for judging UE is terminal operating under client mode, UE waits row
Industry terminal triggering TCP is established；
S3, detect sector terminal triggering establish TCP connections when, UE substitute main website as take
It is engaged in end, receiving and establishing connection request, and and sector terminal as the TCP of the sector terminal of client
Establish TCP connections；
S4, the business datum sent by TCP connections from sector terminal；
S5, the simplification packet for constructing TCP traffic data, and net is sent to by core net EPC
Close equipment；Here the data frame format of the simplification packet constructed has been carried out in detail above
Thin description, will not be repeated here.The simplification packet constructed is sent to by UE via base station
Core net EPC.The IP address that core net EPC adds UE on the simplification packet is packaged into Fig. 6
Shown data are sent to gateway device, and (IP that the field 1 in Fig. 6 is UE, field 2 are to simplify data
Bag) so that gateway device can differentiated service data which sector terminal come from.Gateway is set
It is standby after the addition UE simplification packet of IP address is received, by the business datum in packet
Caching, and the control information in packet substitutes sector terminal as client, to conduct
The main website of service end initiates TCP connection requests, to establish TCP connections.
S6, continue the transmitting and receiving service data on existing passage.
Thus complete when sector terminal is service end, main website is client, main website is whole with industry
The process of TCP connections is established at end.
S7, when terminal operating is under service end pattern, UE only needs to wait for taking for gateway device transmission
Message is established in TCP connections with business datum,
S8, receive gateway device transmission TCP connections establish message after, UE first cache
The business datum received, main website is then substituted as client, triggering and as service end
Sector terminal establishes TCP connections；
S9, the data of caching are sent to by sector terminal by TCP links；
S10, the transmitting and receiving service data on existing passage is continued.
In data transmission method provided by the invention, UE is engaged with the gateway device added, can
To cause Transmission Control Protocol to be terminated on gateway device, removal portion is only transmitted in air-link resources
Divide after message header obtained simplification packet, so as to improve the service efficiency of Radio Link.
The execution it is understood that gateway device and UE in the above method can also cooperate
The operation that TCP connections disconnect.
By taking gateway device as an example, when main website request disconnects and is connected with the TCP of sector terminal, then net
Pass equipment disconnects first to be connected with the TCP of main website；And sent to UE for indicating disconnection and industry
The TCP of the TCP connections of terminal disconnects message.Disconnected and main website in industry terminal request
During TCP connections, if gateway device receives the TCP for being used to indicate disconnection and main website of UE transmissions
The TCP of connection disconnects message, then disconnects and being connected with the TCP of main website.
UE is similar with the operation that gateway device performs when carrying out TCP disconnections, differs only in：
When industry terminal request disconnects and is connected with the TCP of main website, UE disconnects the TCP with sector terminal
Connection, and sent to gateway device and disconnect message；Disconnection and sector terminal are asked in main website
TCP connections when, disconnection message that the gateway device to be received such as UE is sent, so as to whole with industry
End disconnects TCP connections.
(2) protocol stack for being used to store Transmission Control Protocol is located at UE sides
When protocol stack is located at UE sides, UE can directly initiate TCP connection requests, with industry
Terminal transmits data also without establishing TCP connections by other approach or mode.
Specifically, for UE sides, its operation performed as shown in fig. 7, comprises：
The protocol type of UE operations is read when S1, UE start from configuration file；Specifically include row
Industry terminal is as client, main website as service end, or sector terminal is as service end or main website
As client；
S2, when the protocol type for judging UE is terminal operating under client mode, UE receives row
The business datum that industry terminal is sent；
S3, UE simplify data according to the rule structure of the simplification data packet frame form hereinbefore described
Bag, and carry business datum and be together sent to gateway device, so that gateway device is receiving letter
Replacement UE establishes TCP with main website and is connected when changing the control information in packet；
S4, the transmitting and receiving service data on existing passage is continued.
Via above-mentioned steps, UE completes the process established TCP with main website and be connected.
It is understandable to be, when UE is needing disconnection to be connected with main website transmission TCP, to gateway
Equipment sends TCP connections and disconnects message.The TCP connections disconnect described for indicating in message
Gateway device disconnects the TCP established with main website and is connected.
For gateway device side, in this case, the operation that it is performed is relatively simple.
Specifically, gateway device receive UE transmission TCP connection notification messages when, establish and
The TCP connections of main website；TCP connections notification message is used to indicate that gateway device establishes TCP with main website
Connection.
In addition, gateway device removes TCP when receiving the TCP traffic packet of main website transmission
At least a portion TCP message header is simplified packet in business data packet, will simplify data
Bag is sent to UE；When receiving the simplification packet of UE transmissions, added in packet is simplified
Corresponding TCP message header obtains TCP traffic packet, and the TCP traffic packet is passed through
It is sent to main website.
For under a kind of this application scenarios, UE directly can establish TCP with main website and be connected, and with
Gateway device is engaged, so that Transmission Control Protocol is terminated on gateway device, wireless
Only transmission removes the simplification packet obtained after segment message header on link circuit resource, so as to
Improve the service efficiency of Radio Link.
Below in conjunction with the accompanying drawings, data provided by the invention are described in detail with two specific examples to pass
The whole communication process of transmission method.
Fig. 8 shows that the flow that TCP is established is specific, tool when sector terminal initiation TCP is established
Body includes：
S1, sector terminal initiate TCP Establishing process, and sector terminal is not sent out under some application scenarios
TCP Establishing process is played, but directly transmits business datum；
S2, sector terminal send business datum；
Data shown in S3, UE structural map 5, PktType 0xE, DataType are the wireless of 0x1
Link data, it is sent to EPC；
The IP address that S4, EPC add UE on the data is packaged into data shown in Fig. 6, is sent to
Gateway device；
S5, gateway device initiate to be connected with the TCP of main website；
S6, the business datum of TCP foundation carryings is sent to main website；
Fail if S7, gateway device connect foundation with the TCP of main website, data shown in structural map 4,
PktType is 0xE, and DataType is 0x2 TCP turn-off datas, is packaged into the hair of form shown in Fig. 6
Give EPC；
Data wireless links are sent to the UE specified by S8, core net EPC；
S9, TCP disconnection process, guarantee end side and main website side state one are initiated if necessary to UE
Cause.
A complete TCP connection, which is completed, by above-mentioned 9 steps establishes process.
Fig. 9 shows that the flow that TCP disconnects is specific when sector terminal initiates TCP disconnection requests,
Specifically include：
S1, sector terminal initiate TCP disconnection process；
Data shown in S2, UE structural map 5, PktType 0xE, DataType are the wireless of 0x2
Link data, it is sent to EPC；
The IP address that S3, EPC add UE on the data is packaged into data shown in Fig. 6, is sent to
Gateway device；
S4, gateway device initiate the TCP disconnection process with main website.
Sent out it is understood that main website initiates the flow that TCP is established or disconnected with above-mentioned sector terminal
It is similar to act the flow established or disconnected, will not be repeated here.
The embodiment of the present invention is in addition to providing above-mentioned data transmission method, corresponding to the first association
View stack is located at the application scenarios in sector terminal, and the embodiment of the present invention additionally provides a kind of network and set
It is standby, including：
First connection unit, for detecting what the first communication equipment for being linked into itself was initiated
TCP connections are established request or disappeared for indicating that foundation is connected notice with the TCP of the first communication equipment
During breath, foundation is connected with the TCP of the first communication equipment；And initiate TCP in the first communication equipment
When request is established in connection, established to the TCP connections and ask the second asked communication equipment to be accessed
Opposite end the network equipment send TCP connection notification messages；It is used to refer in TCP connection notification messages
Show that peer network device is established TCP with the second communication equipment and is connected；
First processing units, receiving business number of first communication equipment by TCP linkup transmits
During according to bag, the simplification packet of control information is included according to business data packet construction, and will simplify
Packet is sent to second network equipment；Receiving the simplification data of second network equipment transmission
Bao Shi, by the TCP connections between first network equipment and the first communication equipment, by the simplification number
Business data packet, which is reduced to, according to bag is sent to the first communication equipment；
Wherein, the network equipment here can be UE, and the network equipment of opposite end can set for gateway
It is standby；Or the network equipment can be gateway device, the network equipment of opposite end can be UE.When
So the network equipment here is also possible to be the equipment in addition to UE and gateway device, and the present invention is right
This is not especially limited.
The application scenarios being located at corresponding to second of protocol stack in UE, the embodiments of the invention provide
A kind of user terminal, including：
Second connection unit, for detecting that need to establish itself sends with the second communication equipment
During TCP connections, disappear to the gateway device transmission TCP connections notice that the second communication equipment is accessed
Breath；It is used to indicate that gateway device and the second communication equipment establish TCP in TCP connection notification messages
Connection；
Second processing unit, for when needing to send data to the second communication equipment, will carry
In the simplification packet of business datum gateway device is sent to, so that gateway device will receive
Business datum is communicated to second by itself TCP linkup transmit between the second communication equipment and set
It is standby；And the simplification packet of gateway device transmission is received, obtain business datum therein.
In addition, a kind of gateway device is additionally provided, including：
3rd connection unit, for receiving the TCP connection notification messages of user terminal transmission
When, establish the TCP established with the second communication equipment and be connected；TCP connections notification message is used to indicate
Gateway device is established TCP with the second communication equipment and is connected；
3rd processing unit, for receive the second communication equipment transmission business data packet when,
Packet will be simplified and be sent to user terminal；Receiving the simplification packet of user terminal transmission
When, the business datum simplified in packet is passed through between gateway device and the second communication equipment
TCP linkup transmits are to the second communication equipment.
The network equipment, user terminal or the gateway device introduced by the present embodiment are to hold
The device of data transmission method in the row embodiment of the present invention, so based in the embodiment of the present invention
The data transmission method introduced, those skilled in the art can understand the net of the present embodiment
Network equipment, user terminal or the embodiment of gateway device and its various change form,
So how to realize implementation of the present invention for the network equipment, user terminal or gateway device herein
Data transmission method in example is no longer discussed in detail.As long as those skilled in the art implement this
Device used by data transmission method in inventive embodiments, belongs to what the application to be protected
Scope.
Provided herein algorithm and display not with any certain computer, virtual system or other
Equipment is inherently related.Various general-purpose systems can also be used together with teaching based on this.Root
According to above description, the structure required by constructing this kind of system is obvious.In addition, this
Invention is not also directed to any certain programmed language.It should be understood that various programming languages can be utilized
Realize the content of invention described herein, and the description done above to language-specific be for
Disclose the preferred forms of the present invention.
In the specification that this place provides, numerous specific details are set forth.However, it can manage
Solution, embodiments of the invention can be put into practice in the case of these no details.At some
In example, known method, structure and technology is not been shown in detail, so as not to fuzzy to this theory
The understanding of bright book.
Similarly, it will be appreciated that in order to simplify the disclosure and help to understand in each inventive aspect
One or more, above to the present invention exemplary embodiment description in, it is of the invention
Each feature is grouped together into single embodiment, figure or descriptions thereof sometimes.So
And the method for the disclosure should be construed to reflect following intention：I.e. claimed
Invention requires features more more than the feature being expressly recited in each claim.More precisely
Ground says, as the following claims reflect as, inventive aspect is less than above public
All features for the single embodiment opened.Therefore, it then follows claims of embodiment
Thus the embodiment is expressly incorporated in, wherein each claim is used as this hair in itself
Bright separate embodiments.
Those skilled in the art are appreciated that can be to the module in the equipment in embodiment
Carry out adaptively changing and being arranged on them the one or more different from the embodiment
In equipment.Module in embodiment or unit or component can be combined into a module or unit
Or component, and multiple submodule or subelement or sub-component can be divided into addition.Remove
, can be with outside at least some in such feature and/or process or unit exclude each other
Using any combinations to public in this specification (including adjoint claim, summary and accompanying drawing)
All features and all processes or unit of so disclosed any method or equipment opened are entered
Row combination.Unless expressly stated otherwise, this specification (including adjoint claim, summary
With accompanying drawing) disclosed in each feature can replacement identical, equivalent by offer or similar purpose
Feature replaces.
In addition, it will be appreciated by those of skill in the art that although some embodiments in this include
Included some features rather than further feature in other embodiments, but different embodiments
The combination of feature means to be within the scope of the present invention and forms different embodiments.Example
Such as, in the following claims, the one of any of embodiment claimed can
Mode uses in any combination.
The all parts embodiment of the present invention can be realized with hardware, either with one or more
The software module run on individual processor is realized, or is realized with combinations thereof.This area
It will be appreciated by the skilled person that microprocessor or digital signal processor can be used in practice
(DSP) some in gateway according to embodiments of the present invention, proxy server, system are realized
Or some or all functions of whole parts.The present invention is also implemented as being used to perform this
In described method some or all equipment or program of device (for example, calculating
Machine program and computer program product).Such program for realizing the present invention can be stored in calculating
On machine computer-readable recording medium, or there can be the form of one or more signal.Such signal
It can download and obtain from internet website, either be provided or with any on carrier signal
Other forms provide.
It should be noted that the present invention will be described rather than the present invention is carried out for above-described embodiment
Limitation, and those skilled in the art without departing from the scope of the appended claims may be used
Design alternative embodiment.In the claims, should not be by any reference between bracket
Symbol construction is into limitations on claims.Word "comprising", which does not exclude the presence of, is not listed in right
Element or step in it is required that.Word "a" or "an" before element is not excluded for
Multiple such elements be present.The present invention can be by means of including the hardware of some different elements
And realized by means of properly programmed computer.If listing the unit right of equipment for drying
In it is required that, several in these devices can be embodied by same hardware branch.
The use of word first, second, and third does not indicate that any order.Can be by these words
It is construed to title.
Claims (9)
- A kind of 1. data transmission method, it is characterised in that including：First network equipment is in the TCP companies for detecting that the first communication equipment for being linked into itself is initiated When connecing foundation request or being connected notification message with the TCP of the first communication equipment for indicating to establish, build It is vertical to be connected with the TCP of the first communication equipment；And initiate TCP connections foundation in the first communication equipment and ask When asking, the second network for asking the second asked communication equipment to be accessed is established to the TCP connections Equipment sends TCP connection notification messages；It is used to indicate the second net in the TCP connections notification message Network equipment is established TCP with the second communication equipment and is connected；First network equipment is receiving business number of first communication equipment by TCP linkup transmits During according to bag, the simplification packet of control information is included according to business data packet construction, and will The simplified packet is sent to second network equipment；Receiving the transmission of second network equipment , will by the TCP connections between first network equipment and the first communication equipment when simplifying packet The simplified packet is reduced to business data packet and is sent to the first communication equipment；Wherein, the first network equipment is UE, and second network equipment is gateway device； Or the first network equipment is gateway device, second network equipment is UE.
- 2. according to the method for claim 1, it is characterised in that also include：First network equipment disconnects in the first communication device requests to be connected with the TCP of the second communication equipment When connecing, disconnection is connected with the TCP of the first communication equipment；And sent to second network equipment for referring to Show that disconnection disconnects message with the TCP of the second communication equipment TCP being connected；First network equipment disconnects and first in the instruction that is used for for receiving the transmission of second network equipment When the TCP of the TCP connections of communication equipment disconnects message, disconnect and the first communication equipment TCP connections.
- 3. according to the method for claim 1, it is characterised in that first network equipment is the When one communication equipment initiates TCP connections foundation request, establish what is asked to the TCP connections Second network equipment that second communication equipment is accessed sends TCP connection notification messages, including：First network equipment initiates TCP connections and established to ask and receive the in the first communication equipment During the TCP traffic packet that one communication equipment is sent, establish what is asked to the TCP connections Second network equipment that second communication equipment is accessed sends TCP connection notification messages.
- A kind of 4. data transmission method, it is characterised in that including：User terminal detect need to establish itself send TCP with the second communication equipment and be connected when, The gateway device accessed to the second communication equipment sends TCP connection notification messages；The TCP It is used to indicate that the gateway device is established TCP with the second communication equipment and is connected in connection notification message；When needing to send data to the second communication equipment, the simplification data of business datum will be carried The gateway device is sent in bag, so that the gateway device leads to the business datum received Itself TCP linkup transmit between the second communication equipment is crossed to the second communication equipment；And receive institute The simplification packet of gateway device transmission is stated, obtains business datum therein.
- 5. according to the method for claim 4, it is characterised in that also include：User terminal is when needing disconnection to be connected with the second communication equipment transmission TCP, to the gateway Equipment sends TCP connections and disconnects message；The TCP connections disconnect to be used to indicate the net in message Equipment disconnection is closed to be connected with the TCP that the second communication equipment is established.
- A kind of 6. data transmission method, it is characterised in that including：Gateway device is established and the when receiving the TCP connection notification messages of user terminal transmission The TCP connections of two communication equipments；The TCP connections notification message is used to indicate the gateway device TCP is established with the second communication equipment to be connected；Gateway device is when receiving the business data packet of the second communication equipment transmission, by the letter Change packet and be sent to user terminal；When receiving the simplification packet of user terminal transmission, The business datum simplified in packet is passed through into the TCP between gateway device and the second communication equipment Linkup transmit is to the second communication equipment.
- A kind of 7. network equipment, it is characterised in that including：First connection unit, for detecting what the first communication equipment for being linked into itself was initiated TCP connections are established request or disappeared for indicating that foundation is connected notice with the TCP of the first communication equipment During breath, foundation is connected with the TCP of the first communication equipment；And initiate TCP in the first communication equipment When request is established in connection, established to the TCP connections and ask the second asked communication equipment to be accessed Opposite end the network equipment send TCP connection notification messages；Used in the TCP connections notification message TCP is established in instruction peer network device with the second communication equipment to be connected；First processing units, receiving business number of first communication equipment by TCP linkup transmits During according to bag, the simplification packet of control information is included according to business data packet construction, and will The simplified packet is sent to second network equipment；Receiving the transmission of second network equipment , will by the TCP connections between first network equipment and the first communication equipment when simplifying packet The simplified packet is reduced to business data packet and is sent to the first communication equipment；Wherein, the network equipment is UE, and the network equipment of the opposite end is gateway device；Or Person, the network equipment are gateway device, and the network equipment of the opposite end is UE.
- A kind of 8. user terminal, it is characterised in that including：Second connection unit, for detecting that need to establish itself sends with the second communication equipment During TCP connections, disappear to the gateway device transmission TCP connections notice that the second communication equipment is accessed Breath；It is used to indicate that the gateway device is built with the second communication equipment in the TCP connections notification message Vertical TCP connections；Second processing unit, for when needing to send data to the second communication equipment, will carry The gateway device is sent in the simplification packet of business datum, so that the gateway device will The business datum received passes through itself TCP linkup transmit between the second communication equipment to Two communication equipments；And the simplification packet that the gateway device is sent is received, obtain industry therein Business data.
- A kind of 9. gateway device, it is characterised in that including：3rd connection unit, for receiving the TCP connection notification messages of user terminal transmission When, establish the TCP established with the second communication equipment and be connected；The TCP connections notification message is used for Indicate that the gateway device is established TCP with the second communication equipment and is connected；3rd processing unit, for receive the second communication equipment transmission business data packet when, The simplified packet is sent to user terminal；Receiving the simplification number of user terminal transmission During according to bag, by the business datum simplified in packet by gateway device and the second communication equipment it Between TCP linkup transmits to the second communication equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610597396.1A CN107659966A (en) | 2016-07-26 | 2016-07-26 | Data transmission method, the network equipment, user terminal, gateway device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610597396.1A CN107659966A (en) | 2016-07-26 | 2016-07-26 | Data transmission method, the network equipment, user terminal, gateway device |
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| CN107659966A true CN107659966A (en) | 2018-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610597396.1A Pending CN107659966A (en) | 2016-07-26 | 2016-07-26 | Data transmission method, the network equipment, user terminal, gateway device |
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Application publication date: 20180202 |