CN105392174A - Data path selecting method for wireless self-relay network in long term evolution (LTE) system - Google Patents
Data path selecting method for wireless self-relay network in long term evolution (LTE) system Download PDFInfo
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- CN105392174A CN105392174A CN201510678035.5A CN201510678035A CN105392174A CN 105392174 A CN105392174 A CN 105392174A CN 201510678035 A CN201510678035 A CN 201510678035A CN 105392174 A CN105392174 A CN 105392174A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- 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
Abstract
The invention relates to a data path selecting method for a wireless self-relay network in a long term evolution (LTE) system, wherein the data path selecting method aims at the wireless self-relay network. The data path selecting method comprises the steps of realizing terminal-grade data path selection between a core network and a connected relay terminal based on a wireless self-relay network architecture; and then realizing data bearing path selection between core network equipment and the connected relay terminal based on a relay terminal specialized thin film transistor (TFT) which is designed for aiming at the relay equipment and has a relay specialized identification, thereby realizing data path selection of the wireless self-relay network. Furthermore service data identification of the relay equipment is realized through the designed relay terminal specialized TFT. The core network equipment can effectively finish selection between terminal-grade data path and bearing-grade data path, thereby overcoming defects in prior art and greatly improving transmission efficiency in data communication.
Description
Technical field
The present invention relates to
oneplant the wireless data path system of selection from trunk network in LTE system, belong to wireless communication technology field.
Background technology
Along with the communication technology and the development of network architecture flattening and continuing to bring out of multiple high-speed wideband mobile wireless access technology, in order to ensure 3GPP(3rdGenerationpartnershipproject, third generation mobile Partnership Program) competitiveness and consider that the wireless communication system of evolution can with lower cost and shorter transmission delay, higher transmission rate is provided, support the mobility between 3GPP inter Access System and the mobility between 3GPP connecting system and non-3 GPP access system simultaneously, improve 3GPP system capability and performance, reduce costs.Mobile communications network proposes LTE/SAE(LongTermEvolution, Long Term Evolution/SystemArchitectureEvolution, System Architecture Evolution) next generation communication technology and framework theory.SAE, as the evolution of GPRS core network, has simplification framework, the feature of all-IP network, to the 3GPPRAN(RadioAccessNetwork of higher throughput and more low latency, Radio Access Network) and non-3 GPP system access provide support.
Wireless wideband access network based on LTE is made up of terminal, base station, core net and business network four part usually.In actual deployment process, terminal is by radio open access LTE base station equipment and equipment of the core network, and core net is linked into backbone network by wire transmission again, and is finally connected in business network.Such as, but under the environment that some is special, under the scene of the wire transmission difficulty such as remote emergency communication scenes or remote mountain areas, base station and equipment of the core network cannot be connected in backbone network by wire transmission.Usually in this case, the wireless transmission problem being connected to backbone network from junction network solution base station and equipment of the core network is used.Wirelessly refer to that from junction network the wireless broadband terminal equipment utilizing two to bind accesses in different base stations and core net as wireless relay apparatus respectively, realize extending the transmission of two base stations and equipment of the core network, and final solution base station equipment is to the transmission of backbone network, typically wireless from junction network as shown in Figure 1, because the link terminal transmittability as trunking is limited, in junction network, multiple trunking is usually there is to meet the transmission demand of network high bandwidth so wireless, namely same base station and equipment of the core network need to connect multiple trunking simultaneously.This data path just requiring trunking to be formed can possess quick configurable change programme, carries out choose reasonable in the data path that base station and equipment of the core network can be formed at multiple trunking according to actual needs.Simultaneously, because the wireless business datum transmitted in junction network possesses diversity, in order to avoid a large amount of general servicies takies radio channel resource, thus ensure the service quality of key business and urgency traffic, need can form different logical data paths in same trunking, provide two priority classes and service quality (QoS) to control.
Data path in standard LTE system selects the process included in two:
(1) terminating stage data path is selected
When in LTE system, downlink data reaches core net, core net needs to complete according to the information of carrying in data the downlink data path pointing to counterpart terminal and selects.In the data path of terminating stage is selected, core net uses the mode of based target IP matching addresses, namely judges the whether identical terminal deciding finally to select corresponding to data path of target ip address and IP address of terminal.
(2) carry DBMS path to select
When in LTE system, up incoming terminal or downlink data reach core net, terminal and core net need to use based on TFT(TrafficFlowTemplate, traffic flow template) mode complete and select at the data path of carrying level.Namely terminal and core net are mated with the match parameter in TFT by the information such as IP address, port, data flow in data, and the bearer data path corresponding to final selection.
During the terminating stage data path provided in LTE standard is selected, be characterized in that the target ip address of downlink data is ordinary terminal, the data path that equipment of the core network has carried out terminating stage by " terminal and IP address correspondence table " that this target ip address is searched on it is selected.But wireless in junction network, when downlink data needs to carry out relay forwarding by trunking, downlink data target ip address now is still ordinary terminal, but because ordinary terminal does not adhere in current core net equipment, so core net cannot find this ordinary terminal at " terminal and IP address correspondence table " and can select to abandon data, therefore need newly-increased scheme to complete and data retransmission is selected to the terminating stage data path of trunking.
In conventional wireless in junction network, carrying DBMS path cannot be provided to select, and during the carrying DBMS path provided in LTE standard is selected, be characterized in that terminal needs to produce the data path selection that the TFT belonging to terminal self has carried out carrying level, and after terminal access core net, the TFT of terminal self notified core net.But wireless in junction network, because the data transmitted in trunking are not the data that trunking itself sends, the link terminal that trunking comprises cannot obtain the wireless configuration information from junction network to produce the exclusive TFT of corresponding relaying, link terminal application layer can be caused cannot to distinguish which data need to forward, which data needs to retain or abandon.Cannot produce due to link terminal simultaneously and transmit TFT, causing core net cannot carry out downlink bearing DBMS path and select.Further, the IP layer protocol stack acquiescence as trunking terminal can abandon for the data of non-IP own, causes forwarding data to be lost.
In addition, in standard LTE network, only carry out carrying DBMS path to telecommunication service server select, non-telecom business all adopts default bearing to transmit, and does not carry out QoS control.But wireless in junction network, limited in one's ability due to trunking bearer service, take radio channel resource in order to avoid a large amount of general servicies and ensure the service quality of key business and urgency traffic, need to carry out carrying DBMS path to a large number of services server to select, now standard LTE only supports that 16 IP parameter matching items are not enough to support, and needs expansion TFT wireless from junction network carrying DBMS path selective power to increase.
Summary of the invention
For above-mentioned technical problem, technical problem to be solved by this invention is to provide the wireless data path system of selection from trunk network in a kind of LTE system, for wireless from junction network, equipment of the core network can be made effectively to complete terminating stage and the selection of carrying DBMS path, overcome the deficiencies in the prior art, substantially increase the efficiency of transmission of data communication.
The present invention is in order to solve the problems of the technologies described above by the following technical solutions: the present invention devises the wireless data path system of selection from trunk network in a kind of LTE system, first based on wireless from junction network framework, realize core network and select with the terminating stage data path be connected between link terminal; Then, based on the exclusive TFT of link terminal designed by trunking with the exclusive mark of relaying, realize equipment of the core network to select with the bearer data path be connected between link terminal, realize the selection of the wireless data path from trunk network thus, and wherein by the exclusive TFT(TrafficFlowTemplate of designed link terminal, traffic flow template) realize the identification of trunking for business datum.
As a preferred technical solution of the present invention: first in LTE system wireless from junction network perform following steps carry out initialization:
Each equipment of the core network of step a01. respectively according to wireless from junction network framework, obtain its link terminal data path option table corresponding;
The link terminal data path option table of each equipment of the core network of step a02. respectively corresponding to it, respectively generate with its connect the corresponding exclusive TFT of each link terminal of each link terminal; Then, respectively for each equipment of the core network, equipment of the core network according to respectively with its connect the corresponding exclusive TFT of each link terminal of each link terminal, set up each bar bearer data path of corresponding link terminal respectively;
Then based on above-mentioned initialization, described data path system of selection comprises the steps:
Step b01. equipment of the core network receives business data packet, and this business data packet is first mated with link terminal data path option table corresponding to this equipment of the core network, obtains the transmission link terminal of this business data packet; Then, this business data packet is mated with the exclusive TFT of link terminal sending each bar bearer data path corresponding to link terminal by equipment of the core network, obtains the first bearer data path that this business data packet correspondence sends link terminal, and enters step b02;
Step b02. is using another link terminal of being connected with this transmission link terminal reception link terminal as this business data packet, equipment of the core network is by first bearer data path of this business data packet through this business data packet, be sent to the transmission link terminal of this business data packet, after this transmission link terminal receives this business data packet, this business data packet is directly transmitted to reception link terminal, and enters step b03;
Step b03. receives link terminal and receives this business data packet, and the exclusive TFT of link terminal of each bar bearer data path corresponding to this business data packet and this reception link terminal is mated, obtain the second bearer data path of this business data packet, then, receive link terminal by second bearer data path of this business data packet through this business data packet, be sent to the equipment of the core network of down hop, realize the selection of data path for this business data packet.
As a preferred technical solution of the present invention: described step a01 specifically comprises following content: respectively for each equipment of the core network, obtain each link terminal be connected with equipment of the core network, and the IP network section of each service server in backbone network corresponding with each link terminal respectively, form the link terminal data path option table corresponding to this equipment of the core network, wherein, each row data in link terminal data path option table comprise the unique identification of a link terminal respectively, the IP network section of service server in backbone network corresponding with this link terminal, data transfer direction, and the IP network section of service server forms the relaying network segment that the corresponding link terminal of this service server divides place in each row data.
As a preferred technical solution of the present invention: described step a02 specifically comprises the steps:
Step a02-1. is respectively for each equipment of the core network, equipment of the core network is according to the link terminal data path option table of its correspondence, respectively for each link terminal be connected with this equipment of the core network, generate and correspond to each TFT that link terminal respectively carries DBMS path, and add the exclusive mark of relaying in IP filter in this TFT, form link terminal exclusive TFT, make this equipment of the core network obtain respectively with its connect the corresponding exclusive TFT of each link terminal of each link terminal;
Step a02-2. is respectively for each equipment of the core network, equipment of the core network is according to the link terminal data path option table of its correspondence, respectively for each link terminal be connected with this equipment of the core network, for the exclusive TFT of each link terminal corresponding to link terminal, in IP filter context respectively in the exclusive TFT of each link terminal in IP filter, the IP address information arranging the relaying network segment is far-end IP address, upgrade respectively with this equipment of the core network connect the corresponding exclusive TFT of each link terminal of each link terminal;
Step a02-3. is respectively for each equipment of the core network, equipment of the core network according to respectively with its connect the corresponding exclusive TFT of each link terminal of each link terminal, dedicated bearing process of establishing is initiated respectively to its each link terminal connected, for this each link terminal, set up each bar bearer data path of corresponding link terminal respectively, wherein, the exclusive TFT of link terminal and bearer data path one_to_one corresponding each other; Meanwhile, equipment of the core network by its connect each link terminal corresponding respectively the exclusive TFT of each link terminal be sent in corresponding link terminal.
As a preferred technical solution of the present invention: described step b01 specifically comprises the steps:
Step b01-1. equipment of the core network receives business data packet, and judge source IP address, the target ip address in this business data packet respectively, whether match with the relaying network segment in link terminal data path option table corresponding to this equipment of the core network, wherein, when source IP address mates, equipment of the core network selects the link terminal of institute's matched data transmission direction corresponding to downlink transmission direction in link terminal data path option table, as the transmission link terminal of this business data packet, and enter step b01-3; When target ip address mates, equipment of the core network selects the link terminal of institute's matched data transmission direction corresponding to uplink direction in link terminal data path option table, as the transmission link terminal of this business data packet, and enters step b01-3; When source IP address, target ip address all do not mate, then enter step b01-2;
This business data packet, according to the target ip address in this business data packet, is sent to corresponding ordinary terminal or backbone network by step b01-2. equipment of the core network, and data path system of selection terminates;
Step b01-3. equipment of the core network obtains the IP address of corresponding service server in backbone network in this business data packet, and and this business data packet transmission link terminal corresponding to each bar bearer data path the exclusive TFT of link terminal in IP filter, mate respectively, obtain the bearer data path corresponding to the match is successful, as the first bearer data path of this business data packet, enter step b02.
As a preferred technical solution of the present invention: described step b03 specifically comprises the steps:
After step b03-1. reception link terminal receives this business data packet, obtain the IP address of corresponding service server in backbone network in this business data packet, and and this reception link terminal corresponding to each bar bearer data path the exclusive TFT of link terminal in IP filter, mate respectively, obtain the bearer data path corresponding to the match is successful, as the second bearer data path of this business data packet, enter step b03-2;
This reception link terminal of step b03-2., by second bearer data path of this business data packet through this business data packet, is sent to the equipment of the core network of down hop, realizes the selection of data path for this business data packet.
In a kind of LTE system of the present invention, the wireless data path system of selection from trunk network adopts above technical scheme compared with prior art, there is following technique effect: the wireless data path system of selection from trunk network in the LTE system of the present invention's design, for wireless from junction network, by " the link terminal data path option table " of extended core net device interior, under the prerequisite not increasing equipment of the core network treating capacity, the terminating stage data path realized between equipment of the core network and trunking that can be simple and quick is selected, simultaneously, by the exclusive TFT of designed link terminal, effectively increase wireless terminal and the required IP parameter matching item safeguarded of equipment of the core network, ensure that the selective power of equipment of the core network data path, wherein, the link terminal exclusive TFT of equipment of the core network by producing voluntarily, and IP filter (PacketFilter) wherein completes the selection of carrying DBMS path, and effectively utilize the dedicated bearing in standard LTE between ordinary terminal and equipment of the core network to set up/amendment/delete procedure, by equipment of the core network to complete it connect the dynamic-configuration of the exclusive TFT of link terminal of trunking, make link terminal can complete the selection of the carrying DBMS path of upstream data, and can when data path changes, the wireless data path in junction network of renewal that can be simple and quick.
Accompanying drawing explanation
Fig. 1 is the configuration diagram of existing typical radio from junction network;
Fig. 2 is the schematic flow sheet of the wireless data path system of selection from trunk network in LTE system designed by the present invention.
Embodiment
Be described in further detail for the specific embodiment of the present invention below in conjunction with Figure of description.
In LTE system designed by the present invention, the wireless data path system of selection from trunk network is in the middle of actual application, first based on wireless from junction network framework, realize core network and select with the terminating stage data path be connected between link terminal; Then, based on the exclusive TFT of link terminal designed by trunking with the exclusive mark of relaying, realize equipment of the core network to select with the bearer data path be connected between link terminal, realize the selection of the wireless data path from trunk network thus, and wherein by the exclusive TFT(TrafficFlowTemplate of designed link terminal, traffic flow template) realize the identification of trunking for business datum, based on above-mentioned project organization, as shown in Figure 2, in practical application, the concrete following steps that adopt perform.
First in LTE system wireless from junction network perform following steps carry out initialization:
Each equipment of the core network of step a01. respectively according to wireless from junction network framework, obtain its link terminal data path option table corresponding; Specifically comprise following content: respectively for each equipment of the core network, obtain each link terminal of being connected with equipment of the core network and the IP network section of each service server in corresponding backbone network with each link terminal respectively, form the link terminal data path option table corresponding to this equipment of the core network, wherein, each row data in link terminal data path option table comprise IP network section, the data transfer direction of service server in the unique identification of a link terminal, backbone network corresponding with this link terminal respectively; And in each row data, the IP network section of service server forms the relaying network segment that the corresponding link terminal of this service server divides place, and wherein, link terminal data path option table is 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, this network segment, without the need to mating with the network segment of IP route, only needs to carry out dividing according to different link terminal path, i.e. the relaying network segment of corresponding link terminal division; The direction of data transfer direction instruction present data transmission, comprise uplink and downlink, wherein up finger ordinary terminal mails to backbone network, and descending finger backbone network mails 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, the link terminal data path option table of each equipment of the core network respectively corresponding to it, respectively generate with its connect the corresponding exclusive TFT of each link terminal of each link terminal; Then, respectively for each equipment of the core network, equipment of the core network according to respectively with its connect the corresponding exclusive TFT of each link terminal of each link terminal, set up each bar bearer data path of corresponding link terminal respectively; Wherein, specifically comprise the steps:
Step a02-1. is respectively for each equipment of the core network, equipment of the core network is according to the link terminal data path option table of its correspondence, respectively for each link terminal be connected with this equipment of the core network, generate and correspond to each TFT that link terminal respectively carries DBMS path, and the exclusive mark of IP filter (PacketFilter) middle interpolation relaying in this TFT, form link terminal exclusive TFT, make this equipment of the core network obtain respectively with its connect the corresponding exclusive TFT of each link terminal of each link terminal.
Wherein, the TFT structure of 3GPP agreement defined and IP filter (PacketFilter) structure are respectively as shown in following table 2 and table 3, and the 7th that wherein in IP filter (PacketFilter) structure, first character saves is spare bits.By being defined as the exclusive mark of relaying by the 7th of the first byte the, equipment of the core network and the presently used TFT of link terminal can be indicated fast to be the exclusive TFT of link terminal, now equipment of the core network and link terminal no longer verify the Packetfilteridentifier in Numberofpacketfilters and PacketFilter in the exclusive TFT of link terminal, and whether link terminal also no longer pays close attention to the exclusive TFT of this link terminal is TFT belonging to terminal.The exclusive TFT structure of amended link terminal is as shown in table 4 below, and wherein, Repeater is the exclusive mark of relaying.
Table 2
Table 3
Table 4
Step a02-2. is respectively for each equipment of the core network, equipment of the core network is according to the link terminal data path option table of its correspondence, respectively for each link terminal be connected with this equipment of the core network, for the exclusive TFT of each link terminal corresponding to link terminal, in IP filter (PacketFilter) context that IP filter (PacketFilter) is inner in the exclusive TFT of each link terminal respectively, the IP address information arranging the relaying network segment is far-end IP address, upgrade respectively with this equipment of the core network connect the corresponding exclusive TFT of each link terminal of each link terminal.
Step a02-3. is respectively for each equipment of the core network, equipment of the core network according to respectively with its connect the corresponding exclusive TFT of each link terminal of each link terminal, dedicated bearing process of establishing is initiated respectively to its each link terminal connected, for this each link terminal, set up each bar bearer data path of corresponding link terminal respectively, wherein, the exclusive TFT of link terminal and bearer data path one_to_one corresponding each other; Simultaneously, equipment of the core network by its connect each link terminal corresponding respectively the exclusive TFT of each link terminal be sent in corresponding link terminal, corresponding link terminal is preserved for the exclusive TFT of received link terminal, indicate its application layer no longer to carry out object IP address detected to the business datum corresponding to the exclusive TFT of this link terminal simultaneously, but directly forward.
For above-mentioned initialization operation, if " link terminal data path option table " change of equipment of the core network, then dedicated bearing process of establishing/dedicated bearing renewal process/dedicated bearing delete procedure that equipment of the core network can be initiated by network in standard LTE complete relay data path between corresponding link terminal and equipment of the core network newly-built/amendment/deletion action.
Wireless complete the foundation of above-mentioned initial configuration and bearer data path from junction network after, when ordinary terminal or service server need by wireless from junction network transmit data time, equipment of the core network and trunking process as follows:
Step b01. equipment of the core network receives business data packet, and this business data packet is first mated with link terminal data path option table corresponding to this equipment of the core network, obtains the transmission link terminal of this business data packet; Then, this business data packet is mated with the exclusive TFT of link terminal sending each bar bearer data path corresponding to link terminal by equipment of the core network, obtain the first bearer data path that this business data packet correspondence sends link terminal, specifically comprise the steps:
Step b01-1. equipment of the core network receives business data packet, and judge source IP address, the target ip address in this business data packet respectively, whether match with the relaying network segment in link terminal data path option table corresponding to this equipment of the core network, wherein, when source IP address mates, equipment of the core network selects the link terminal of institute's matched data transmission direction corresponding to downlink transmission direction in link terminal data path option table, as the transmission link terminal of this business data packet, and enter step b01-3; When target ip address mates, equipment of the core network selects the link terminal of institute's matched data transmission direction corresponding to uplink direction in link terminal data path option table, as the transmission link terminal of this business data packet, and enters step b01-3; When source IP address, target ip address all do not mate, then enter step b01-2.
This business data packet, according to the target ip address in this business data packet, is sent to corresponding ordinary terminal or backbone network by step b01-2. equipment of the core network, and data path system of selection terminates.
Step b01-3. equipment of the core network obtains the IP address of corresponding service server in backbone network in this business data packet, and and this business data packet transmission link terminal corresponding to each bar bearer data path the exclusive TFT of link terminal in IP filter (PacketFilter), mate respectively, obtain the bearer data path corresponding to the match is successful, as the first bearer data path of this business data packet, enter step b02.
Step b02. is using another link terminal of being connected with this transmission link terminal reception link terminal as this business data packet, equipment of the core network is by first bearer data path of this business data packet through this business data packet, be sent to the transmission link terminal of this business data packet, after this transmission link terminal receives this business data packet, judge that this business datum is as forwarding data by the exclusive TFT of corresponding link terminal, then do not re-use IP layer protocol stack and detect Target IP, this business data packet is directly transmitted to reception link terminal, and enters step b03;
Step b03. receives link terminal and receives this business data packet, and the exclusive TFT of link terminal of each bar bearer data path corresponding to this business data packet and this reception link terminal is mated, obtain the second bearer data path of this business data packet, then, receive link terminal by second bearer data path of this business data packet through this business data packet, be sent to the equipment of the core network of down hop, realize the selection of data path for this business data packet, specifically comprise the steps:
After step b03-1. reception link terminal receives this business data packet, obtain the IP address of corresponding service server in backbone network in this business data packet, and and this reception link terminal corresponding to each bar bearer data path the exclusive TFT of link terminal in IP filter (PacketFilter), mate respectively, obtain the bearer data path corresponding to the match is successful, as the second bearer data path of this business data packet, enter step b03-2;
This reception link terminal of step b03-2., by second bearer data path of this business data packet through this business data packet, is sent to the equipment of the core network of down hop, realizes the selection of data path for this business data packet.
The wireless data path system of selection from trunk network in the LTE system of technique scheme design, for wireless from junction network, by " the link terminal data path option table " of extended core net device interior, under the prerequisite not increasing equipment of the core network treating capacity, the terminating stage data path realized between equipment of the core network and trunking that can be simple and quick is selected, simultaneously, by the exclusive TFT of designed link terminal, effectively increase wireless terminal and the required IP parameter matching item safeguarded of equipment of the core network, ensure that the selective power of equipment of the core network data path, wherein, the link terminal exclusive TFT of equipment of the core network by producing voluntarily, and IP filter (PacketFilter) (PacketFilter) wherein completes the selection of carrying DBMS path, and effectively utilize the dedicated bearing in standard LTE between ordinary terminal and equipment of the core network to set up/amendment/delete procedure, by equipment of the core network to complete it connect the dynamic-configuration of the exclusive TFT of link terminal of trunking, make link terminal can complete the selection of the carrying DBMS path of upstream data, and can when data path changes, the wireless data path in junction network of renewal that can be simple and quick.
Be explained in detail for embodiments of the present invention in conjunction with Figure of description above, but the present invention is not limited to above-mentioned execution mode, in the ken that those of ordinary skill in the art possess, can also make a variety of changes under the prerequisite not departing from present inventive concept.
Claims (6)
1. a wireless data path system of selection from trunk network in LTE system, is characterized in that, first based on wireless from junction network framework, realize core network and select with the terminating stage data path be connected between link terminal; Then, based on the exclusive TFT of link terminal designed by trunking with the exclusive mark of relaying, realize equipment of the core network to select with the bearer data path be connected between link terminal, realize the selection of the wireless data path from trunk network thus, and wherein realize the identification of trunking for business datum by the exclusive TFT of designed link terminal.
2. the wireless data path system of selection from trunk network in a kind of LTE system according to claim 1, is characterized in that, first performs following steps to wireless in LTE system from junction network and carries out initialization:
Each equipment of the core network of step a01. respectively according to wireless from junction network framework, obtain its link terminal data path option table corresponding;
The link terminal data path option table of each equipment of the core network of step a02. respectively corresponding to it, respectively generate with its connect the corresponding exclusive TFT of each link terminal of each link terminal; Then, respectively for each equipment of the core network, equipment of the core network according to respectively with its connect the corresponding exclusive TFT of each link terminal of each link terminal, set up each bar bearer data path of corresponding link terminal respectively;
Then based on above-mentioned initialization, described data path system of selection comprises the steps:
Step b01. equipment of the core network receives business data packet, and this business data packet is first mated with link terminal data path option table corresponding to this equipment of the core network, obtains the transmission link terminal of this business data packet; Then, this business data packet is mated with the exclusive TFT of link terminal sending each bar bearer data path corresponding to link terminal by equipment of the core network, obtains the first bearer data path that this business data packet correspondence sends link terminal, and enters step b02;
Step b02. is using another link terminal of being connected with this transmission link terminal reception link terminal as this business data packet, equipment of the core network is by first bearer data path of this business data packet through this business data packet, be sent to the transmission link terminal of this business data packet, after this transmission link terminal receives this business data packet, this business data packet is directly transmitted to reception link terminal, and enters step b03;
Step b03. receives link terminal and receives this business data packet, and the exclusive TFT of link terminal of each bar bearer data path corresponding to this business data packet and this reception link terminal is mated, obtain the second bearer data path of this business data packet, then, receive link terminal by second bearer data path of this business data packet through this business data packet, be sent to the equipment of the core network of down hop, realize the selection of data path for this business data packet.
3. the wireless data path system of selection from trunk network in a kind of LTE system according to claim 2, it is characterized in that, described step a01 specifically comprises following content: respectively for each equipment of the core network, obtain each link terminal be connected with equipment of the core network, and the IP network section of each service server in backbone network corresponding with each link terminal respectively, form the link terminal data path option table corresponding to this equipment of the core network, wherein, each row data in link terminal data path option table comprise the unique identification of a link terminal respectively, the IP network section of service server in backbone network corresponding with this link terminal, data transfer direction, and the IP network section of service server forms the relaying network segment that the corresponding link terminal of this service server divides place in each row data.
4. the wireless data path system of selection from trunk network in a kind of LTE system according to claim 3, it is characterized in that, described step a02 specifically comprises the steps:
Step a02-1. is respectively for each equipment of the core network, equipment of the core network is according to the link terminal data path option table of its correspondence, respectively for each link terminal be connected with this equipment of the core network, generate and correspond to each TFT that link terminal respectively carries DBMS path, and add the exclusive mark of relaying in IP filter in this TFT, form link terminal exclusive TFT, make this equipment of the core network obtain respectively with its connect the corresponding exclusive TFT of each link terminal of each link terminal;
Step a02-2. is respectively for each equipment of the core network, equipment of the core network is according to the link terminal data path option table of its correspondence, respectively for each link terminal be connected with this equipment of the core network, for the exclusive TFT of each link terminal corresponding to link terminal, in IP filter context respectively in the exclusive TFT of each link terminal in IP filter, the IP address information arranging the relaying network segment is far-end IP address, upgrade respectively with this equipment of the core network connect the corresponding exclusive TFT of each link terminal of each link terminal;
Step a02-3. is respectively for each equipment of the core network, equipment of the core network according to respectively with its connect the corresponding exclusive TFT of each link terminal of each link terminal, dedicated bearing process of establishing is initiated respectively to its each link terminal connected, for this each link terminal, set up each bar bearer data path of corresponding link terminal respectively, wherein, the exclusive TFT of link terminal and bearer data path one_to_one corresponding each other; Meanwhile, equipment of the core network by its connect each link terminal corresponding respectively the exclusive TFT of each link terminal be sent in corresponding link terminal.
5. the wireless data path system of selection from trunk network in a kind of LTE system according to claim 4, it is characterized in that, described step b01 specifically comprises the steps:
Step b01-1. equipment of the core network receives business data packet, and judge source IP address, the target ip address in this business data packet respectively, whether match with the relaying network segment in link terminal data path option table corresponding to this equipment of the core network, wherein, when source IP address mates, equipment of the core network selects the link terminal of institute's matched data transmission direction corresponding to downlink transmission direction in link terminal data path option table, as the transmission link terminal of this business data packet, and enter step b01-3; When target ip address mates, equipment of the core network selects the link terminal of institute's matched data transmission direction corresponding to uplink direction in link terminal data path option table, as the transmission link terminal of this business data packet, and enters step b01-3; When source IP address, target ip address all do not mate, then enter step b01-2;
This business data packet, according to the target ip address in this business data packet, is sent to corresponding ordinary terminal or backbone network by step b01-2. equipment of the core network, and data path system of selection terminates;
Step b01-3. equipment of the core network obtains the IP address of corresponding service server in backbone network in this business data packet, and and this business data packet transmission link terminal corresponding to each bar bearer data path the exclusive TFT of link terminal in IP filter, mate respectively, obtain the bearer data path corresponding to the match is successful, as the first bearer data path of this business data packet, enter step b02.
6. the wireless data path system of selection from trunk network in a kind of LTE system according to claim 5, it is characterized in that, described step b03 specifically comprises the steps:
After step b03-1. reception link terminal receives this business data packet, obtain the IP address of corresponding service server in backbone network in this business data packet, and and this reception link terminal corresponding to each bar bearer data path the exclusive TFT of link terminal in IP filter, mate respectively, obtain the bearer data path corresponding to the match is successful, as the second bearer data path of this business data packet, enter step b03-2;
This reception link terminal of step b03-2., by second bearer data path of this business data packet through this business data packet, is sent to the equipment of the core network of down hop, realizes the selection of data path for this business data packet.
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