CN105392174B - Wirelessly from the data path selection method of trunk network in a kind of LTE system - Google Patents
Wirelessly from the data path selection method of trunk network in a kind of LTE system Download PDFInfo
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- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
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Abstract
The present invention relates to, wirelessly from the data path selection method of trunk network, wirelessly from junction network framework, realize that the terminating stage data path between core network and the link terminal that is connected selects for wirelessly from junction network, being primarily based in a kind of LTE system；Then, based on for the link terminal exclusive TFT designed by trunking with the exclusive mark of relaying, realize that the bearer data path between equipment of the core network and the link terminal that is connected selects, it is achieved in wirelessly from the selection of the data path of trunk network, and wherein realize that trunking is directed to the identification of business datum by the exclusive TFT of designed link terminal, equipment of the core network can be made to efficiently accomplish terminating stage and carrying grade data path selection, the deficiencies in the prior art are overcome, the efficiency of transmission of data communication is substantially increased.
Description
Technical field
The present invention relates to, wirelessly from the data path selection method of trunk network, belong to wireless communication skill in a kind of LTE system
Art field.
Background technique
As the development and a variety of high-speed wideband mobile wireless of the communication technology and network architecture flattening access skill
Art continues to bring out, in order to guarantee 3GPP(3rd Generation partnership project, third generation mobile partner
With plan) competitiveness and consider that the wireless communication system of evolution can be provided with lower cost and shorter transmission delay
Higher transmission rate, while mobility and 3GPP access system and non-3 gpp between 3GPP inter Access System being supported to connect
Enter the mobility between system, improves 3GPP system ability and performance, reduce cost.Mobile communications network proposes LTE/SAE
Under (Long Term Evolution, long term evolution/System Architecture Evolution, System Architecture Evolution)
The generation communication technology and framework theory.Evolution of the SAE as GPRS core network has simplified architecture, the spy of full IPization network
Point, to the 3GPP RAN(Radio Access Network of higher throughput and more low latency, Radio Access Network) and
Non-3 GPP system access provides support.
Wireless wideband access network based on LTE is usually made of terminal, base station, core net and four part of business network.
During actual deployment, terminal accesses LTE base station equipment by radio open and equipment of the core network, core net pass through wired again
Transmission is linked into backbone network, and is ultimately connected in business network.But under some special environment, such as remote emergency
Under the scene of the wire transmission difficulty such as communication scenes or remote mountain areas, base station and equipment of the core network are can not to pass through wire transmission
It is connected in backbone network.Usually in this case, using wirelessly from junction network solution base station and equipment of the core network company
It is connected to the transmission problem of backbone network.Wirelessly refer to the wireless broadband terminal equipment bound using two as wireless from junction network
Trunking is respectively connected in different base station and core net, realizes that the transmission to two base stations and equipment of the core network extends, and
It is final to solve the transmission of base station equipment to backbone network, typically wirelessly from junction network as shown in Figure 1, due to being set as relaying
Standby link terminal transmittability is limited, so there are multiple trunkings usually from junction network wirelessly to meet network height
The transmission demand of bandwidth, i.e., same base station and equipment of the core network need while connecting multiple trunkings.This requires relayings to set
The standby data path that is formed by can have quickly configurable change programme, and base station and equipment of the core network can be according to practical need
It to be formed by data path and be reasonably selected in multiple trunkings.Simultaneously as wirelessly being transmitted from junction network
Business datum have diversity, in order to avoid a large amount of general service occupy radio channel resource, to guarantee key business
With the service quality of urgency traffic, need to be capable of forming different logical data paths in same trunking, it is preferential to provide
Grade control and service quality (QoS) control.
Data path selection in standard LTE system is related to the processing there are two aspect:
(1) terminating stage data path selects
When downlink data reaches core net in LTE system, core net needs to complete to be directed toward according to the information carried in data
The downlink data access of counterpart terminal selects.In the data path selection of terminating stage, core net, which uses, is based on target ip address
Matched mode judges target ip address and whether IP address of terminal is identical determines corresponding to final choice data path
Terminal.
(2) carrying grade data path selection
When uplink incoming terminal or downlink data reach core net in LTE system, terminal and core net are needed using base
In TFT(Traffic Flow Template, traffic flow template) mode complete carrying grade data path selection.I.e. eventually
End and core net are matched by information such as IP address, port, data flows in data with the match parameter in TFT, and
Bearer data path corresponding to final choice.
For in the selection of terminating stage data path provided in LTE standard, its main feature is that the Target IP of downlink data
Location is ordinary terminal, and equipment of the core network searches " terminal and IP address correspond to table " thereon by the target ip address to complete end
Hold the data path selection of grade.But wirelessly from junction network, when downlink data needs to be relayed by trunking
When forwarding, downlink data target ip address at this time remains as ordinary terminal, but since ordinary terminal is not in current core net
Adhere in equipment, so core net can not find the ordinary terminal " terminal and IP address correspond to table " and can select to abandon number
According to, it is therefore desirable to newly-increased scheme is completed to forward the data to the terminating stage data path selection of trunking.
In conventional wireless from junction network, carrying grade data path selection can not be provided, and in LTE standard
In provided carrying grade data path selection, its main feature is that terminal needs generation to belong to the TFT of terminal itself to complete to carry
The data path selection of grade, and the TFT of terminal itself is notified into core net after terminal access core net.But wireless in
After in network, since the data transmitted in trunking are not the data that trunking itself is issued, trunking is wrapped
The link terminal contained, which can not obtain wirelessly to generate from the configuration information of junction network, accordingly relays exclusive TFT, will lead to relaying
Which data terminal applies layer, which cannot be distinguished, needs to forward, which data needs to retain or abandon.Simultaneously because link terminal without
Method generates and transmits TFT, causes core net that can not carry out the selection of downlink bearing grade data path.Further, as trunking
The IP layer protocol stack default of terminal can abandon the data of non-IP itself, cause to forward loss of data.
In addition, only carrying out carrying grade data path selection, non-telecom industry to telecommunication service server in standard LTE network
Business is all made of default bearing and is transmitted, and controls without QoS.But it wirelessly from junction network, is being set due to relaying
The ability of standby bearer service is limited, in order to avoid a large amount of general service occupies radio channel resource and guarantees key business and tight
The service quality of anxious business needs to carry out a large number of services server to carry the selection of grade data path, and standard LTE is only supported at this time
16 IP parameter occurrences are not enough to support, and need to extend TFT to increase and wirelessly carry grade data path from junction network
Selective power.
Summary of the invention
In view of the above technical problems, technical problem to be solved by the invention is to provide wireless in a kind of LTE system
After the data path selection method of net, for wirelessly from junction network, equipment of the core network capable of being made to efficiently accomplish terminating stage and hold
The selection of grade data path is carried, the deficiencies in the prior art is overcome, substantially increases the efficiency of transmission of data communication.
In order to solve the above-mentioned technical problem the present invention uses following technical scheme: the present invention devises in a kind of LTE system
Wirelessly from the data path selection method of trunk network, be primarily based on wirelessly from junction network framework, realize core network be connected
Terminating stage data path selection between link terminal；Then, based on designed with the exclusive mark of relaying for trunking
The exclusive TFT of link terminal, realize that the bearer data path between equipment of the core network and the link terminal that is connected selects, be achieved in
Wirelessly from the selection of the data path of trunk network, and wherein pass through the exclusive TFT(Traffic Flow of designed link terminal
Template, traffic flow template) realize that trunking is directed to the identification of business datum.
As a preferred technical solution of the present invention: first to wireless as follows from junction network execution in LTE system
Step is initialized:
The each equipment of the core network of step a01. is whole according to the relaying for corresponding to it wirelessly from junction network framework, is obtained respectively
End data access selects table；
The link terminal data path according to corresponding to it selects table to each equipment of the core network of step a02. respectively, respectively
Generate each link terminal exclusive TFT corresponding with each link terminal of its company；Then, it is set respectively for each core net
Standby, equipment of the core network is established respectively according to each exclusive TFT of link terminal corresponding with each link terminal of its company respectively
Each bearer data path of corresponding link terminal；
It is then based on above-mentioned initialization, the data path selection method includes the following steps:
Step b01. equipment of the core network receive business data packet, and by the business data packet first with the equipment of the core network
Corresponding link terminal data path selection table is matched, and the transmission link terminal of the business data packet is obtained；Then, core
Net equipment carries out the exclusive TFT of link terminal of each bearer data path corresponding to the business data packet and transmission link terminal
Matching obtains corresponding the first bearer data path for sending link terminal of the business data packet, and enters step b02；
Another link terminal connecing as the business data packet that step b02. will be connected with the transmission link terminal
Link terminal is received, first bearer data path of the equipment of the core network by the business data packet Jing Guo the business data packet is sent to
The transmission link terminal of the business data packet, after which receives the business data packet, by the business data packet
It is directly forwarded to receive link terminal, and enters step b03；
Step b03. receives link terminal and receives the business data packet, and the business data packet and the reception are relayed eventually
It holds the exclusive TFT of link terminal of corresponding each bearer data path to be matched, obtains the second carrying of the business data packet
Then data path receives second bearer data path of the link terminal by the business data packet Jing Guo the business data packet, hair
It send to the equipment of the core network of next-hop, the selection of data path is realized for the business data packet.
As a preferred technical solution of the present invention: the step a01 specifically includes following content: respectively for each
Equipment of the core network obtains each link terminal being connected with equipment of the core network and the respectively corresponding bone with each link terminal
The IP network section of each service server in dry net constitutes the link terminal data path selection table for corresponding to the equipment of the core network,
Wherein, each row data in link terminal data path selection table respectively include in the unique identification and this of a link terminal
After the IP network section of service server, data transfer direction in the corresponding backbone network of terminal；And service server in each row data
IP network section constitute the service server correspond to link terminal divide where relaying network segment.
As a preferred technical solution of the present invention: the step a02 specifically comprises the following steps:
Step a02-1. is directed to each equipment of the core network respectively, and equipment of the core network is according to its corresponding link terminal data
Access selects table, respectively for each link terminal being connected with the equipment of the core network, generates and respectively carries corresponding to link terminal
Each TFT of grade data path, and addition relays exclusive mark in the IP filter in the TFT, and it is exclusive to constitute link terminal
TFT, so that the equipment of the core network obtains each link terminal exclusive TFT corresponding with each link terminal of its company respectively；
Step a02-2. is directed to each equipment of the core network respectively, and equipment of the core network is according to its corresponding link terminal data
Access selects table, respectively for each link terminal being connected with the equipment of the core network, for corresponding to each of link terminal
The exclusive TFT of link terminal, respectively in the IP filter context in the exclusive TFT of each link terminal in IP filter, setting
The IP address information for relaying network segment is far-end IP address, is updated corresponding with equipment of the core network institute's each link terminal of company respectively
The exclusive TFT of each link terminal；
Step a02-3. is directed to each equipment of the core network respectively, equipment of the core network according to respectively with each relaying of its company
The corresponding each exclusive TFT of link terminal of terminal initiates dedicated bearing to its connected each link terminal respectively and established
Journey establishes each bearer data path of corresponding link terminal, wherein link terminal is special for each link terminal respectively
Belong to TFT to correspond each other with bearer data path；Meanwhile equipment of the core network is corresponding by each link terminal of its company
Each exclusive TFT of link terminal is sent in corresponding link terminal.
As a preferred technical solution of the present invention: the step b01 specifically comprises the following steps:
Step b01-1. equipment of the core network receives business data packet, and with judging the source IP in the business data packet respectively
Location, target ip address, if with the relaying network segment phase in the selection table of link terminal data path corresponding to the equipment of the core network
Match, wherein when source IP address matching, equipment of the core network selects institute's matched data transmission in link terminal data path selection table
Direction is link terminal corresponding to downlink transmission direction, as the transmission link terminal of the business data packet, and is entered step
b01-3；When target ip address matching, equipment of the core network selects institute's matched data transmission in link terminal data path selection table
Direction is link terminal corresponding to uplink direction, as the transmission link terminal of the business data packet, and is entered step
b01-3；When source IP address, target ip address mismatch, then b01-2 is entered step；
Step b01-2. equipment of the core network sends out the business data packet according to the target ip address in the business data packet
Sending to corresponding ordinary terminal or backbone network, data path selection method terminates；
Step b01-3. equipment of the core network is with obtaining the IP for corresponding to service server in the business data packet in backbone network
Location, and in the exclusive TFT of link terminal of each bearer data path corresponding to the transmission link terminal with the business data packet
IP filter is matched respectively, bearer data path corresponding to acquisition successful match, and first as the business data packet
Bearer data path enters step b02.
As a preferred technical solution of the present invention: the step b03 specifically comprises the following steps:
After step b03-1. reception link terminal receives the business data packet, backbone in the business data packet is obtained
The IP address of service server, and the link terminal with each bearer data path corresponding to the reception link terminal are corresponded in net
IP filter in exclusive TFT, is matched respectively, bearer data path corresponding to successful match is obtained, as the business
Second bearer data path of data packet, enters step b03-2；
Second carrying data of the step b03-2. reception link terminal by the business data packet Jing Guo the business data packet
Access is sent to the equipment of the core network of next-hop, and the selection of data path is realized for the business data packet.
Above technical scheme wirelessly is used from the data path selection method of trunk network in a kind of LTE system of the present invention
Compared with prior art, it has following technical effect that in the LTE system of the invention designed and is wirelessly selected from the data path of trunk network
Selection method, for wirelessly from junction network, by " link terminal data path selects table " inside extended core net equipment,
End under the premise of not increasing equipment of the core network treating capacity, between realization equipment of the core network that can be simple and quick and trunking
The selection of grade data path is held, meanwhile, by the designed exclusive TFT of link terminal, effectively increase wireless terminal and core net
The IP parameter occurrence safeguarded required for equipment, ensure that the selective power of equipment of the core network data path, wherein core net is set
The standby exclusive TFT of link terminal and IP filter therein (Packet Filter) by voluntarily generating completes carrying series
According to the selection of access, and efficiently use dedicated bearing foundation/modification in standard LTE between ordinary terminal and equipment of the core network/
Deletion process completes the dynamic configuration of TFT exclusive to the link terminal of its connected trunking by equipment of the core network, so that in
The selection of the carrying grade data path of upstream data can be completed after terminal, and can be when data path changes, it can
Simple and quick updates wirelessly from the data path in junction network.
Detailed description of the invention
Fig. 1 is configuration diagram of the existing typical radio from junction network；
Fig. 2 is in LTE system designed by the present invention wirelessly from the flow diagram of the data path selection method of trunk network.
Specific embodiment
Specific embodiments of the present invention will be described in further detail for needle with reference to the accompanying drawings of the specification.
Wirelessly work as from the data path selection method of trunk network in actual application in LTE system designed by the present invention
In, it is primarily based on wirelessly from junction network framework, realizes the terminating stage data path between core network and the link terminal that is connected
Selection；Then, based on for having the exclusive TFT of link terminal for relaying exclusive mark designed by trunking, core net is realized
Bearer data path selection between equipment and the link terminal that is connected, is achieved in wirelessly from the choosing of the data path of trunk network
Select, and wherein by the exclusive TFT(Traffic Flow Template of designed link terminal, traffic flow template) it realizes
It is directed to the identification of business datum after equipment, is based on above-mentioned design structure, as shown in Fig. 2, in practical application, it is specific using following step
Suddenly it is executed.
First in LTE system it is wireless from junction network execute following steps initialize:
The each equipment of the core network of step a01. is whole according to the relaying for corresponding to it wirelessly from junction network framework, is obtained respectively
End data access selects table；Specifically include following content: respectively for each equipment of the core network, acquisition is connected with equipment of the core network
Each link terminal and respectively in backbone network corresponding with each link terminal each service server IP network section, structure
Table is selected at the link terminal data path for corresponding to the equipment of the core network, wherein link terminal data path selects in table
Each row data respectively include the unique identification of a link terminal, service server in backbone network corresponding with the link terminal
IP network section, data transfer direction；And the IP network section of service server constitutes the corresponding relaying of the service server in each row data
Terminal divides the relaying network segment at place, wherein link terminal data path selects table as shown in table 1 below:
| IP address | Subnet mask | Data transfer direction | Link terminal IMSI |
Table 1
Wherein, IP address and subnet mask composition service server place IP network section, which is not necessarily to and the net of IP routing
Section matching, it is only necessary to be divided according to different link terminal accesses, that is, correspond to the relaying network segment of link terminal division；Number
According to the direction of transmission direction instruction present data transmission, including uplink and downlink, wherein uplink refers to that ordinary terminal is sent to backbone network,
Downlink refers to that backbone network is sent to ordinary terminal；Link terminal IMSI is the unique identification of link terminal.
Step a02. is after the link terminal in trunking is attached to corresponding equipment of the core network, each equipment of the core network
The link terminal data path according to corresponding to it selects table respectively, generates respectively corresponding with each link terminal of its company
Each exclusive TFT of link terminal；Then, it is directed to each equipment of the core network respectively, equipment of the core network is according to each with its company respectively
The corresponding each exclusive TFT of link terminal of a link terminal establishes each bearer data path of corresponding link terminal respectively；
Wherein, specifically comprise the following steps:
Step a02-1. is directed to each equipment of the core network respectively, and equipment of the core network is according to its corresponding link terminal data
Access selects table, respectively for each link terminal being connected with the equipment of the core network, generates and respectively carries corresponding to link terminal
Each TFT of grade data path, and addition relays exclusive mark, structure in the IP filter (Packet Filter) in the TFT
At the exclusive TFT of link terminal so that the equipment of the core network obtain respectively it is corresponding with each link terminal of its company it is each in
After the exclusive TFT of terminal.
Wherein, the TFT structure of 3GPP agreement defined and IP filter (Packet Filter) structure are respectively such as the following table 2
With shown in table 3, wherein in IP filter (Packet Filter) structure the 7th of first character section be spare bits.By by
The 7th of one byte is defined as relaying exclusive mark, can quickly indicate that equipment of the core network and link terminal are currently used
TFT is the exclusive TFT of link terminal, at this time the Number in equipment of the core network and link terminal TFT no longer exclusive to link terminal
Packet filter identifier in of packet filters and Packet Filter is verified, and relaying is eventually
Also no longer pay close attention to whether the exclusive TFT of the link terminal is the affiliated TFT of terminal in end.The modified exclusive TFT structure of link terminal is such as
Shown in the following table 4, wherein Repeater is to relay exclusive mark.
Table 2
Table 3
Table 4
Step a02-2. is directed to each equipment of the core network respectively, and equipment of the core network is according to its corresponding link terminal data
Access selects table, respectively for each link terminal being connected with the equipment of the core network, for corresponding to each of link terminal
The exclusive TFT of link terminal, the respectively inner packet filtering of IP filter (Packet Filter) in the exclusive TFT of each link terminal
In device (Packet Filter) context, setting relaying network segment IP address information be far-end IP address, update respectively with the core
The corresponding each exclusive TFT of link terminal of each link terminal of heart net equipment company of institute.
Step a02-3. is directed to each equipment of the core network respectively, equipment of the core network according to respectively with each relaying of its company
The corresponding each exclusive TFT of link terminal of terminal initiates dedicated bearing to its connected each link terminal respectively and established
Journey establishes each bearer data path of corresponding link terminal, wherein link terminal is special for each link terminal respectively
Belong to TFT to correspond each other with bearer data path；Meanwhile equipment of the core network is corresponding by each link terminal of its company
Each exclusive TFT of link terminal is sent in corresponding link terminal, and corresponding link terminal is special for received link terminal
Belong to TFT to be saved, while indicating that business datum corresponding to its application layer TFT no longer exclusive to the link terminal carries out purpose
IP address detection, but be directly forwarded.
For above-mentioned initialization operation, if " link terminal data path selects table " of equipment of the core network changes,
Then equipment of the core network can by standard LTE network initiate dedicated bearing establishment process/dedicated bearing renewal process/it is proprietary
Deleting load-bearing process completes newly-built/modification/delete operation that data path is relayed between corresponding link terminal and equipment of the core network.
Wirelessly from after the foundation that junction network completes above-mentioned initial configuration and bearer data path, when ordinary terminal or
When service server is needed by wirelessly transmitting data from junction network, equipment of the core network and trunking carry out as follows
Processing:
Step b01. equipment of the core network receive business data packet, and by the business data packet first with the equipment of the core network
Corresponding link terminal data path selection table is matched, and the transmission link terminal of the business data packet is obtained；Then, core
Net equipment carries out the exclusive TFT of link terminal of each bearer data path corresponding to the business data packet and transmission link terminal
Matching obtains corresponding the first bearer data path for sending link terminal of the business data packet, specifically comprises the following steps:
Step b01-1. equipment of the core network receives business data packet, and with judging the source IP in the business data packet respectively
Location, target ip address, if with the relaying network segment phase in the selection table of link terminal data path corresponding to the equipment of the core network
Match, wherein when source IP address matching, equipment of the core network selects institute's matched data transmission in link terminal data path selection table
Direction is link terminal corresponding to downlink transmission direction, as the transmission link terminal of the business data packet, and is entered step
b01-3；When target ip address matching, equipment of the core network selects institute's matched data transmission in link terminal data path selection table
Direction is link terminal corresponding to uplink direction, as the transmission link terminal of the business data packet, and is entered step
b01-3；When source IP address, target ip address mismatch, then b01-2 is entered step.
Step b01-2. equipment of the core network sends out the business data packet according to the target ip address in the business data packet
Sending to corresponding ordinary terminal or backbone network, data path selection method terminates.
Step b01-3. equipment of the core network is with obtaining the IP for corresponding to service server in the business data packet in backbone network
Location, and in the exclusive TFT of link terminal of each bearer data path corresponding to the transmission link terminal with the business data packet
IP filter (Packet Filter), is matched respectively, bearer data path corresponding to successful match is obtained, as this
First bearer data path of business data packet, enters step b02.
Another link terminal connecing as the business data packet that step b02. will be connected with the transmission link terminal
Link terminal is received, first bearer data path of the equipment of the core network by the business data packet Jing Guo the business data packet is sent to
The transmission link terminal of the business data packet, after which receives the business data packet, eventually by corresponding relaying
It holds exclusive TFT to determine the business datum to forward data, then IP layer protocol stack detection Target IP is not used, by the business datum
Packet is directly forwarded to receive link terminal, and enters step b03；
Step b03. receives link terminal and receives the business data packet, and the business data packet and the reception are relayed eventually
It holds the exclusive TFT of link terminal of corresponding each bearer data path to be matched, obtains the second carrying of the business data packet
Then data path receives second bearer data path of the link terminal by the business data packet Jing Guo the business data packet, hair
It send to the equipment of the core network of next-hop, the selection of data path is realized for the business data packet, is specifically comprised the following steps:
After step b03-1. reception link terminal receives the business data packet, backbone in the business data packet is obtained
The IP address of service server, and the link terminal with each bearer data path corresponding to the reception link terminal are corresponded in net
IP filter (Packet Filter) in exclusive TFT, is matched respectively, obtains carrying data corresponding to successful match
Access enters step b03-2 as the second bearer data path of the business data packet；
Second carrying data of the step b03-2. reception link terminal by the business data packet Jing Guo the business data packet
Access is sent to the equipment of the core network of next-hop, and the selection of data path is realized for the business data packet.
Wirelessly from the data path selection method of trunk network in the LTE system of above-mentioned technical proposal design, for it is wireless from
Junction network is not increasing equipment of the core network by " link terminal data path selects table " inside extended core net equipment
Under the premise for the treatment of capacity, the terminating stage data path realized between equipment of the core network and trunking that can be simple and quick is selected
It selects, meanwhile, by the designed exclusive TFT of link terminal, effectively increase maintenance required for wireless terminal and equipment of the core network
IP parameter occurrence, ensure that the selective power of equipment of the core network data path, wherein equipment of the core network is by voluntarily generating
The exclusive TFT of link terminal and IP filter therein (Packet Filter) (Packet Filter) complete carrying grade
The selection of data path, and efficiently use the dedicated bearing in standard LTE between ordinary terminal and equipment of the core network and establish/repair
Change/deletion process, the dynamic configuration of TFT exclusive to the link terminal of its connected trunking is completed by equipment of the core network, is made
Link terminal can complete upstream data carrying grade data path selection, and can when data path changes,
Update that can be simple and quick is wirelessly from the data path in junction network.
Above in conjunction with Figure of description needle, the embodiments of the present invention are described in detail, but the present invention is not limited to
Above embodiment can also not depart from present inventive concept within the knowledge of a person skilled in the art
Under the premise of make a variety of changes.
Claims (6)
1. wirelessly from the data path selection method of trunk network in a kind of LTE system, which is characterized in that be primarily based on wireless in
After the network architecture, realize that the terminating stage data path between core network and the link terminal that is connected selects；Then, in based on being directed to
There is designed by the equipment the exclusive TFT of link terminal for relaying exclusive mark, realize equipment of the core network be connected link terminal it
Between bearer data path selection, be achieved in wirelessly from the selection of the data path of trunk network, and wherein by designed
The exclusive TFT of link terminal realizes that trunking is directed to the identification of business datum；Wherein, TFT, that is, Traffic Flow
Template indicates traffic flow template.
2. feature exists according to claim 1 wirelessly from the data path selection method of trunk network in a kind of LTE system
In, first in LTE system it is wireless from junction network execute following steps initialize:
The each equipment of the core network of step a01. is respectively according to wirelessly from junction network framework, acquisition corresponds to its link terminal data
Access selects table；
Link terminal data path according to corresponding to it selects table to each equipment of the core network of step a02. respectively, generate respectively with
The corresponding each exclusive TFT of link terminal of each link terminal of its company；Then, it is directed to each equipment of the core network, core respectively
Heart net equipment is established respectively and is corresponded to according to each link terminal exclusive TFT corresponding with each link terminal of its company respectively
Each bearer data path of link terminal；
It is then based on above-mentioned initialization, the data path selection method includes the following steps:
Step b01. equipment of the core network receives business data packet, and by the business data packet first and corresponding to the equipment of the core network
Link terminal data path selection table is matched, and the transmission link terminal of the business data packet is obtained；Then, equipment of the core network
The business data packet is matched with the exclusive TFT of link terminal for sending each bearer data path corresponding to link terminal,
Corresponding the first bearer data path for sending link terminal of the business data packet is obtained, and enters step b02；
Step b02. is using another link terminal being connected with the transmission link terminal as in the reception of the business data packet
After terminal, first bearer data path of the equipment of the core network by the business data packet Jing Guo the business data packet is sent to the industry
The transmission link terminal for data packet of being engaged in, it is after which receives the business data packet, the business data packet is direct
It is transmitted to reception link terminal, and enters step b03；
Step b03. receives link terminal and receives the business data packet, and the business data packet and the reception link terminal institute is right
The exclusive TFT of the link terminal of each bearer data path is answered to be matched, the second carrying data for obtaining the business data packet are logical
Then road receives second bearer data path of the link terminal by the business data packet Jing Guo the business data packet, is sent to down
One equipment of the core network jumped, the selection of data path is realized for the business data packet.
3. feature exists according to claim 2 wirelessly from the data path selection method of trunk network in a kind of LTE system
In the step a01 specifically includes following content: it is directed to each equipment of the core network respectively, what acquisition was connected with equipment of the core network
The IP network section of each service server in each link terminal and respectively backbone network corresponding with each link terminal is constituted
Link terminal data path corresponding to the equipment of the core network selects table, wherein link terminal data path selects each in table
Row data respectively include the unique identification of a link terminal, in backbone network corresponding with the link terminal service server IP
Network segment, data transfer direction；And the IP network section of service server constitutes the corresponding relaying of the service server eventually in each row data
End divides the relaying network segment at place.
4. feature exists according to claim 3 wirelessly from the data path selection method of trunk network in a kind of LTE system
In the step a02 specifically comprises the following steps:
Step a02-1. is directed to each equipment of the core network respectively, and equipment of the core network is selected according to its corresponding link terminal data path
Table is selected, respectively for each link terminal being connected with the equipment of the core network, generates and respectively carries grade data corresponding to link terminal
Each TFT of access, and addition relays exclusive mark in the IP filter in the TFT, constitutes the exclusive TFT of link terminal, makes
It obtains the equipment of the core network and obtains each link terminal exclusive TFT corresponding with each link terminal of its company respectively；
Step a02-2. is directed to each equipment of the core network respectively, and equipment of the core network is selected according to its corresponding link terminal data path
Table is selected, it is whole for each relaying for corresponding to link terminal respectively for each link terminal being connected with the equipment of the core network
Exclusive TFT is held, respectively in the IP filter context in the exclusive TFT of each link terminal in IP filter, trunk network is set
The IP address information of section is far-end IP address, is updated corresponding each with equipment of the core network institute's each link terminal of company respectively
The exclusive TFT of link terminal；
Step a02-3. is directed to each equipment of the core network respectively, equipment of the core network according to respectively with each link terminal phase of its company
The corresponding exclusive TFT of each link terminal initiates dedicated bearing establishment process to its connected each link terminal respectively, for
Each link terminal establishes each bearer data path of corresponding link terminal respectively, wherein the exclusive TFT of link terminal with
Bearer data path corresponds each other；Meanwhile equipment of the core network by each link terminal of its company it is corresponding it is each in
It is sent in corresponding link terminal after the exclusive TFT of terminal.
5. feature exists according to claim 4 wirelessly from the data path selection method of trunk network in a kind of LTE system
In the step b01 specifically comprises the following steps:
Step b01-1. equipment of the core network receives business data packet, and judges source IP address, mesh in the business data packet respectively
Mark IP address, if match with the relaying network segment in link terminal data path selection table corresponding to the equipment of the core network,
In, when source IP address matching, equipment of the core network selects institute's matched data transmission direction in link terminal data path selection table
For link terminal corresponding to downlink transmission direction, as the transmission link terminal of the business data packet, and b01- is entered step
3；When target ip address matching, equipment of the core network selects institute's matched data transmission direction in link terminal data path selection table
For link terminal corresponding to uplink direction, as the transmission link terminal of the business data packet, and b01- is entered step
3；When source IP address, target ip address mismatch, then b01-2 is entered step；
The business data packet is sent to pair according to the target ip address in the business data packet by step b01-2. equipment of the core network
Ordinary terminal or backbone network are answered, data path selection method terminates；
Step b01-3. equipment of the core network obtains the IP address for corresponding to service server in the business data packet in backbone network, and and
Packet filtering in the exclusive TFT of link terminal for sending each bearer data path corresponding to link terminal of the business data packet
Device is matched respectively, obtains bearer data path corresponding to successful match, and first as the business data packet carries number
According to access, b02 is entered step.
6. feature exists according to claim 5 wirelessly from the data path selection method of trunk network in a kind of LTE system
In the step b03 specifically comprises the following steps:
After step b03-1. reception link terminal receives the business data packet, it is right in backbone network in the business data packet to obtain
The IP address of service server is answered, and exclusive with the link terminal of each bearer data path corresponding to the reception link terminal
IP filter in TFT, is matched respectively, bearer data path corresponding to successful match is obtained, as the business datum
Second bearer data path of packet, enters step b03-2；
Second bearer data path of the step b03-2. reception link terminal by the business data packet Jing Guo the business data packet,
It is sent to the equipment of the core network of next-hop, the selection of data path is realized for the business data packet.
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| CN102113370A (en) * | 2008-08-08 | 2011-06-29 | 高通股份有限公司 | Method and apparatus for packet differentiation in wireless communication system |
| CN101932102A (en) * | 2009-06-19 | 2010-12-29 | 华为技术有限公司 | Service bearing mapping method and communication equipment thereof |
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