CN104602256A - Message transmission method and system - Google Patents

Abstract

The invention discloses message transmission method and system. The method comprises the steps of encapsulating a GTPU head and a tunnel head for an uplink message through a relay base station device; sending the uplink message to a CPE (Central Processing Element); modifying the source IP address of the tunnel head into the public network IP address of the relay base station device through the CPE; sending the uplink message to DeNB; encapsulating corresponding IP+UDP+GTPU head for the uplink message through the DeNB; sending the uplink message to an SGW (Signal Gate Way); de-encapsulating the IP+UDP+GTPU head encapsulated in the uplink message through the SGW; sending the uplink message to a tunnel server through the relay base station device according to the target IP address of the tunnel head, encapsulated in the uplink message; de-encapsulating the tunnel head encapsulated in the uplink message by the relay base station device through the tunnel server; sending the uplink message to the SGW; sending the uplink message to a target device through the SGW according to the target IP address of the uplink message. According to the method and system, the difficulty at deployment for wired transmission can be solved through the wireless transmission environment, and therefore, the problem of limitation on communication in some regions is avoided, the system coverage range is expanded, and the cell throughput is increased.

Description

A kind of method and system of message transmissions

Technical field

The present invention relates to communication technical field, particularly relate to a kind of method and system of message transmissions.

Background technology

As shown in Figure 1, be the networking schematic diagram of LTE (Long Term Evolution, Long Term Evolution) system, be divided into wired side and wireless side.Wired side comprises service server, core net, three-tier switch, transmission PTN (Packet Transport Network, Packet Transport Network) etc., wireless side comprises L1/L2 (1/ layer 2, layer) protocol processes, radio frequency unit process, UE (User Equipment, subscriber equipment) reception etc.

In the network construction form of current LTE system, for rural area or remote mountain areas, wired transmission environment cannot be built for base station equipment, thus cause base station equipment to be connected to core net, making communicates expediently is hindered, remote districts or shade overlay area, or even blind area, all exist and cover rate variance problem.Further, in the scene that some optical fiber cannot arrive or wired passback construction is more difficult (as without the micro-covering scene in city of wired passback, the residential building dividing the indoor office environments of deployment, optical fiber cannot arrive family without room, remote suburb or rural area etc.), the covering of macro-cell signals is weak, disposes dumb.

Summary of the invention

The embodiment of the present invention provides a kind of method and system of message transmissions, and to carry out expanded areas of coverage by wireless transmission, increase system ovelay range, elevator system link performance, improves cell throughout.

The embodiment of the present invention provides a kind of method of message transmissions, said method comprising the steps of:

Relay base station equipment receives the uplink message from subscriber equipment, to uplink message encapsulation general packet radio service technology Tunneling Protocol-User face GTPU head and tunnel head, and uplink message is sent to ustomer premises access equipment CPE; The source IP address of described tunnel head is the private network IP address of relay base station equipment, and object IP address is the IP address of tunnel server, and destination interface is the specific listening port of tunnel server;

Described CPE receives the uplink message from relay base station equipment, the source IP address of tunnel head is revised as the public network IP address of described relay base station equipment, and uplink message is sent to donor base station DeNB;

Described DeNB receives the uplink message from CPE, encapsulates corresponding IP+ User Datagram Protoco (UDP) UDP+GTPU head, and uplink message is sent to gateway SGW to uplink message;

Described SGW receives the uplink message from DeNB, the IP+UDP+GTPU head that DeNB described in decapsulation encapsulates in uplink message, and the object IP address of the described tunnel head encapsulated in uplink message according to described relay base station equipment, uplink message is sent to described tunnel server;

Described tunnel server receives the uplink message from SGW, the tunnel head that relay base station equipment described in decapsulation encapsulates in uplink message, and uplink message is sent to described SGW;

Described SGW utilizes the object IP address of uplink message, uplink message is sent to object equipment.

Described method comprises further:

Described SGW receives the downlink message from described object equipment, encapsulates GTPU head corresponding to described relay base station equipment, and downlink message is sent to described tunnel server to downlink message;

Described tunnel server receives the downlink message from described SGW, to downlink message encapsulation tunnel head, and downlink message is sent to described SGW; Wherein, the source IP address of described tunnel head is the IP address of described tunnel server, and the object IP address of described tunnel head is the public network IP address of described relay base station equipment, and the source port of described tunnel head is the specific listening port of described tunnel server;

Described SGW receives the downlink message from described tunnel server, encapsulates IP+UDP+GTPU head corresponding to described DeNB, and downlink message is sent to described DeNB to downlink message;

Described DeNB receives the downlink message from described SGW, the IP+UDP+GTPU head that SGW described in decapsulation encapsulates in downlink message, and downlink message is sent to described CPE;

Described CPE receives the downlink message from described DeNB, the object IP address of tunnel head is revised as the private network IP address of described relay base station equipment, and downlink message is sent to described relay base station equipment;

Described relay base station equipment receives the downlink message from described CPE, the tunnel head that tunnel server described in decapsulation encapsulates in downlink message, and utilizes the object IP address of downlink message to forward.

Described method comprises further:

Described tunnel server configuration binary matched rule, the object IP address of described binary matched rule is the IP address of described tunnel server, and destination interface is the specific listening port of described tunnel server;

Described tunnel server is after receiving the uplink message carrying tunnel head, if the object IP address of described tunnel head is the IP address of described tunnel server, destination interface is the specific listening port of described tunnel server, then described tunnel server confirms that described uplink message matches described binary matched rule, and resolve the content of carrying in the content and described uplink message of carrying in described tunnel head, and utilize the content maintenance message repeating list item carried in the content and described uplink message of carrying in described tunnel head;

Wherein, in described message repeating list item, record the source port of described tunnel head, destination interface, source IP address, object IP address, and, the source IP address of described uplink message and object IP address.

Described tunnel server utilizes the content maintenance message repeating list item carried in the content and described uplink message of carrying in described tunnel head, comprising: described tunnel server judges whether to have recorded in message repeating list item source IP address and the object IP address of described uplink message; If not, then described tunnel server sets up message repeating list item, and in described message repeating list item, record the source port of described tunnel head, destination interface, source IP address, object IP address, and, the source IP address of described uplink message and object IP address; If so, then described tunnel server judges whether the source port that carries in described tunnel head and source IP address change; If changed, then described tunnel server utilizes source port and the source IP address of the tunnel head recorded in the source port and source IP address amendment message repeating list item carried in described tunnel head; If do not changed, then described tunnel server keeps message repeating list item constant.

Described tunnel server receives the downlink message from described SGW, to the process of downlink message encapsulation tunnel head, specifically comprise: described tunnel server receives the downlink message from described SGW, utilize source IP address and the object IP address of the uplink message recorded in message repeating list item described in the source IP address of described downlink message and object IP address lookup, to obtain the source port of the tunnel head recorded in described message repeating list item, destination interface, source IP address, object IP address;

Described tunnel server utilizes the source port of the tunnel head recorded in described message repeating list item, destination interface, source IP address, object IP address is to described downlink message encapsulation tunnel head, be the destination interface of the tunnel head recorded in described message repeating list item to make the source port of the tunnel head encapsulated in described downlink message, the destination interface of the tunnel head encapsulated in described downlink message is the source port of the tunnel head recorded in described message repeating list item, the source IP address of the tunnel head encapsulated in described downlink message is the object IP address of the tunnel head recorded in described message repeating list item, the object IP address of the tunnel head encapsulated in described downlink message is the source IP address of the tunnel head recorded in described message repeating list item.

The embodiment of the present invention provides a kind of system of message transmissions, and described system specifically comprises:

Relay base station equipment, for receiving the uplink message from subscriber equipment, to uplink message encapsulation general packet radio service technology Tunneling Protocol-User face GTPU head and tunnel head, and sends to ustomer premises access equipment CPE by uplink message; The source IP address of described tunnel head is the private network IP address of relay base station equipment, and object IP address is the IP address of tunnel server, and destination interface is the specific listening port of tunnel server;

CPE, for receiving the uplink message from relay base station equipment, being revised as the public network IP address of described relay base station equipment, and uplink message is sent to donor base station DeNB by the source IP address of tunnel head;

DeNB, for receiving the uplink message from CPE, encapsulating corresponding IP+ User Datagram Protoco (UDP) UDP+GTPU head to uplink message, and uplink message is sent to gateway SGW;

SGW, for receiving the uplink message from DeNB, the IP+UDP+GTPU head that DeNB described in decapsulation encapsulates in uplink message, and the object IP address of the described tunnel head encapsulated in uplink message according to described relay base station equipment, be sent to described tunnel server by uplink message;

Tunnel server, for receiving the uplink message from SGW, the tunnel head that relay base station equipment described in decapsulation encapsulates in uplink message, and uplink message is sent to described SGW;

SGW, also for utilizing the object IP address of uplink message, sends to object equipment by uplink message.

Described SGW, also for receiving the downlink message from described object equipment, encapsulating GTPU head corresponding to described relay base station equipment to downlink message, and downlink message is sent to described tunnel server;

Described tunnel server, also for receiving the downlink message from described SGW, to downlink message encapsulation tunnel head, and sends to described SGW by downlink message; Wherein, the source IP address of described tunnel head is the IP address of described tunnel server, and the object IP address of described tunnel head is the public network IP address of described relay base station equipment, and the source port of described tunnel head is the specific listening port of described tunnel server;

Described SGW, also for receiving the downlink message from described tunnel server, encapsulating IP+UDP+GTPU head corresponding to described DeNB to downlink message, and downlink message is sent to described DeNB;

Described DeNB, also for receiving the downlink message from described SGW, the IP+UDP+GTPU head that SGW described in decapsulation encapsulates in downlink message, and downlink message is sent to described CPE;

Described CPE, also for receiving the downlink message from DeNB, being revised as the private network IP address of described relay base station equipment, and downlink message is sent to relay base station equipment by the object IP address of tunnel head;

Described relay base station equipment, also for receiving the downlink message from CPE, the tunnel head that tunnel server described in decapsulation encapsulates in downlink message, and utilize the object IP address of downlink message to forward.

Described tunnel server, specifically for configuration binary matched rule, the object IP address of described binary matched rule is the IP address of described tunnel server, and destination interface is the specific listening port of described tunnel server; After receiving the uplink message carrying tunnel head, if the object IP address of described tunnel head is the IP address of described tunnel server, destination interface is the specific listening port of described tunnel server, then confirm that described uplink message matches described binary matched rule, and resolve the content of carrying in the content and described uplink message of carrying in described tunnel head, and utilize the content maintenance message repeating list item carried in the content and described uplink message of carrying in described tunnel head;

Wherein, in described message repeating list item, record the source port of described tunnel head, destination interface, source IP address, object IP address, and, the source IP address of described uplink message and object IP address.

Described tunnel server, specifically in the process utilizing the content maintenance message repeating list item carried in the content and described uplink message of carrying in described tunnel head, judge the source IP address and the object IP address that whether have recorded described uplink message in message repeating list item; If not, then set up message repeating list item, and in described message repeating list item, record the source port of described tunnel head, destination interface, source IP address, object IP address, and, the source IP address of described uplink message and object IP address; If so, then judge whether the source port that carries in described tunnel head and source IP address change; If changed, then utilize source port and the source IP address of the tunnel head recorded in the source port and source IP address amendment message repeating list item carried in described tunnel head; If do not changed, then keep message repeating list item constant.

Described tunnel server, specifically for receiving the downlink message from described SGW, in process to downlink message encapsulation tunnel head, receive the downlink message from described SGW, utilize source IP address and the object IP address of the uplink message recorded in message repeating list item described in the source IP address of described downlink message and object IP address lookup, to obtain the source port of the tunnel head recorded in described message repeating list item, destination interface, source IP address, object IP address, utilize the source port of the tunnel head recorded in described message repeating list item, destination interface, source IP address, object IP address is to described downlink message encapsulation tunnel head, be the destination interface of the tunnel head recorded in described message repeating list item to make the source port of the tunnel head encapsulated in described downlink message, the destination interface of the tunnel head encapsulated in described downlink message is the source port of the tunnel head recorded in described message repeating list item, the source IP address of the tunnel head encapsulated in described downlink message is the object IP address of the tunnel head recorded in described message repeating list item, the object IP address of the tunnel head encapsulated in described downlink message is the source IP address of the tunnel head recorded in described message repeating list item.

Compared with prior art, the embodiment of the present invention at least has the following advantages: in the embodiment of the present invention, adopt CPE (Customer Premise Equipment, ustomer premises access equipment) and DeNB (Donor EvolvedNode B, donor base station) model set up the connection of relay base station equipment and core network element, thus the deployment difficulty of wire transmission is solved by wireless transmission environments, avoid the communication limitation problem of certain areas, make some Special section (as the micro-covering scene in city without wired passback, the indoor office environments of deployment is divided without room, optical fiber cannot arrive the residential building at family, remote suburb or rural area etc.) expanded areas of coverage can be carried out by wireless transmission, increase system ovelay range, elevator system link performance, improve cell throughout.

Accompanying drawing explanation

In order to the technical scheme of the embodiment of the present invention is clearly described, below the accompanying drawing used required in describing the embodiment of the present invention is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings of the embodiment of the present invention.

Fig. 1 is the networking schematic diagram of the LTE system proposed in prior art;

Fig. 2 is the networking schematic diagram of class Relay (relaying) scheme proposed in the embodiment of the present invention;

Fig. 3 is the method flow schematic diagram of a kind of message transmissions that the embodiment of the present invention one provides;

Fig. 4 is the handling principle figure of the uplink message of the class Relay pattern proposed in the embodiment of the present invention;

Fig. 5 is the flow chart that the tunnel server proposed in the embodiment of the present invention processes uplink message;

Fig. 6 is the up handling process schematic diagram of the NPHost module proposed in the embodiment of the present invention;

Fig. 7 is the schematic diagram of the downlink processing data of the class Relay pattern proposed in the embodiment of the present invention;

Fig. 8 is the downlink data handling process schematic diagram of the tunnel server proposed in the embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

For problems of the prior art; in order to promote the covering performance of regional area; directly can be amplified power by repeater; while wireless signal is amplified; noise is also exaggerated; powerful repeater can bring higher up IOT (average interference lifting) Upgrade Problem usually, affects wireless network performance.In view of repeater Problems existing, class Relay (relaying) scheme is proposed in the embodiment of the present invention, dispose difficulty to solve wire transmission, cause communicating in mountain area limitation problem, rural area or special screne can use class Relay scheme to provide and cover extension, degree of depth covering etc.As shown in Figure 2, be the networking schematic diagram of class Relay scheme.In class Relay scheme, DeNB needs to realize SGW (ServiceGateway, gateway)/PGW (PDN Gateway, packet data network gateway) and Relay gateway function, MME (Mobility ManagementEntity, the Mobility Management Entity) function of Relay UE (the UE logic function of via node) can be disposed at DeNB or core-network side.

In the embodiment of the present invention, relay base station equipment (RN-eNB) is when being connected to PTN network by cable network, and the middle form of the DeNB of CPE wireless connections LTE system that adopts is connected in PTN network indirectly.The multiple relay base station equipment of CPE upper support mounting, and the relay base station equipment that wired connection is all, form a Small-scale LAN.The network elements such as relay base station equipment and core net mutual, then utilize the NAT of CPE (Network Address Translation, network address translation) function to communicate with outside wide area network.Use the tunneling technique of IP agreement to provide in class Relay scheme and tunnel encapsulation is carried out to polytype message such as user face, chain of command, Operation and Maintenance of relaying base station equipment, and auxiliary section administration tunnel server (RN-server) in a network, complete the tunnel transmission between relay base station equipment and tunnel server, and then complete the transmitting procedure of message.Wherein, uplink message needs to carry out tunnel encapsulation at relay base station equipment, and be sent to tunnel server, tunnel server carries out decapsulation.Downlink message needs to carry out tunnel encapsulation at tunnel server, and be sent to relay base station equipment, relay base station equipment carries out decapsulation.The wide covering realizing relay base station equipment is coordinated eventually through relay base station equipment and tunneling technique.

In the embodiment of the present invention, uplink message specifically includes but not limited to uplink business data message or uplink signaling data message or upstream operation maintenance packet; Downlink message specifically includes but not limited to downlink service data message or downlink signaling data message or downstream operation maintenance packet.

Embodiment one

The embodiment of the present invention one provides a kind of method of message transmissions, and under the method can be applied to the networking scene of class Relay scheme, as shown in Figure 3, the method for this message transmissions specifically comprises the following steps:

Step 301, relay base station equipment receives the uplink message from subscriber equipment, to uplink message encapsulation GTPU head and tunnel head, and uplink message is sent to CPE.

Wherein, the source IP address of this tunnel head is the private network IP address of relay base station equipment, and object IP address is the IP address of tunnel server, and destination interface is the specific listening port of tunnel server.Further, the source port of this tunnel head can be arbitrary port, as the port numbers that source port can be assigned to according to application such as signaling/business/OM for relay base station equipment from the port pool of each application of advance planning.

Step 302, CPE receives the uplink message from relay base station equipment, the source IP address of tunnel head is revised as the public network IP address of relay base station equipment, and uplink message is sent to DeNB.

Step 303, DeNB receives the uplink message from CPE, to the IP+UDP+GTPU head of uplink message encapsulation corresponding (namely DeNB is corresponding), and uplink message is sent to SGW.

Step 304, SGW receives the uplink message from DeNB, the IP+UDP+GTPU head that this DeNB of decapsulation encapsulates in uplink message, and the object IP address of the tunnel head encapsulated in uplink message according to relay base station equipment, be sent to tunnel server by uplink message.

Step 305, tunnel server receives the uplink message from SGW, the tunnel head that decapsulation relay base station equipment encapsulates in uplink message, and uplink message is sent to SGW.

Step 306, SGW utilizes the object IP address of uplink message that uplink message is sent to object equipment.

Said process is the handling process for uplink message, and for downlink message, its handling process comprises:

SGW receives the downlink message from object equipment, the GTPU head corresponding to downlink message encapsulation relay base station equipment, and downlink message is sent to tunnel server.Afterwards, tunnel server receives the downlink message from SGW, to downlink message encapsulation tunnel head, and downlink message is sent to SGW; Wherein, the source IP address of tunnel head is the IP address of tunnel server, and the object IP address of tunnel head is the public network IP address of relay base station equipment, and the source port of tunnel head is the specific listening port of tunnel server; In addition, the destination interface of this tunnel head can be arbitrary port, as the port numbers that destination interface can be assigned to according to application such as signaling/business/OM for relay base station equipment from the port pool of each application of advance planning.Afterwards, SGW receives the downlink message from tunnel server, the IP+UDP+GTPU head corresponding to downlink message encapsulation DeNB, and downlink message is sent to DeNB.Afterwards, DeNB receives the downlink message from SGW, the IP+UDP+GTPU head that decapsulation SGW encapsulates in downlink message, and downlink message is sent to CPE.Afterwards, CPE receives the downlink message from DeNB, the object IP address of tunnel head is revised as the private network IP address of relay base station equipment, and downlink message is sent to relay base station equipment.Afterwards, relay base station equipment receives the downlink message from CPE, the tunnel head that decapsulation tunnel server encapsulates in downlink message, and utilizes the object IP address of downlink message to forward.

In the embodiment of the present invention, for the uplink message carrying tunnel head that relay base station equipment sends, the source IP address of this tunnel head is the private network IP address of relay base station equipment, the source port of this tunnel head can be arbitrary port, as the port numbers that source port can be assigned to according to application such as signaling/business/OM for relay base station equipment from the port pool of each application of advance planning.On this basis, CPE can carry out NAT conversion to the source IP address of the tunnel head of the uplink message received and source port, therefore, what tunnel server received carries in the uplink message of tunnel head, the source IP address of this tunnel head is the public network IP address after the conversion that relay base station equipment is corresponding, and the source port of this tunnel head is the conversion rear port that relay base station equipment is corresponding.

In the embodiment of the present invention, tunnel server can configure binary matched rule, the object IP address of this binary matched rule is the IP address of tunnel server, and destination interface is the specific listening port of tunnel server.Based on this, tunnel server is after receiving the uplink message carrying tunnel head, if the object IP address of tunnel head is the IP address of tunnel server, destination interface is the specific listening port of tunnel server, then tunnel server confirms that uplink message matches binary matched rule, and resolve the content of carrying in the content and uplink message of carrying in tunnel head, utilize the content maintenance message repeating list item carried in the content and uplink message of carrying in tunnel head; The source port of tunnel head, destination interface, source IP address, object IP address is recorded in this message repeating list item, and, the source IP address of uplink message and object IP address.

In the embodiment of the present invention, tunnel server utilizes the process of the content maintenance message repeating list item carried in the content and uplink message of carrying in tunnel head, specifically includes but not limited to as under type: tunnel server judges whether to have recorded in message repeating list item source IP address and the object IP address of uplink message.If not, then tunnel server can set up message repeating list item, and in this message repeating list item, record the source port of tunnel head, destination interface, source IP address, object IP address, and, the source IP address of uplink message and object IP address.If so, then tunnel server judges whether the source port that carries in tunnel head and source IP address change; If changed, then tunnel server can utilize source port and the source IP address of the tunnel head recorded in the source port and source IP address amendment message repeating list item carried in tunnel head; If do not changed, then tunnel server can keep message repeating list item constant.

In the embodiment of the present invention, tunnel server receives the downlink message from SGW, to the process of downlink message encapsulation tunnel head, specifically include but not limited to as under type: tunnel server receives the downlink message from SGW, utilize source IP address and the object IP address of the uplink message recorded in the source IP address of this downlink message and object IP address lookup message repeating list item, to obtain the source port of the tunnel head recorded in this message repeating list item, destination interface, source IP address, object IP address.Tunnel server utilizes the source port of the tunnel head recorded in this message repeating list item, destination interface, source IP address, object IP address is to this downlink message encapsulation tunnel head, be the destination interface of the tunnel head recorded in this message repeating list item to make the source port of the tunnel head encapsulated in this downlink message, the destination interface of the tunnel head encapsulated in this downlink message is the source port of the tunnel head recorded in this message repeating list item, the source IP address of the tunnel head encapsulated in this downlink message is the object IP address of the tunnel head recorded in this message repeating list item, the object IP address of the tunnel head encapsulated in this downlink message is the source IP address of the tunnel head recorded in this message repeating list item.

Compared with prior art, the embodiment of the present invention at least has the following advantages: in the embodiment of the present invention, the model of CPE and DeNB is adopted to set up the connection of relay base station equipment and core network element, thus the deployment difficulty of wire transmission is solved by wireless transmission environments, avoid the communication limitation problem of certain areas, make some Special section (as the micro-covering scene in city without wired passback, the indoor office environments of deployment is divided without room, optical fiber cannot arrive the residential building at family, remote suburb or rural area etc.) expanded areas of coverage can be carried out by wireless transmission, increase system ovelay range, elevator system link performance, improve cell throughout.

Below in conjunction with concrete application scenarios, above-described embodiment one is described in detail.

The prerequisite of the embodiment of the present invention is: can be applied to cable environment and dispose difficulty, need the area substituting transmission by wireless environment.Tunnel server needs configuration service IP address and Operation and Maintenance IP address.All application of relay base station equipment (RN-eNB) all need first to communicate with outside (OMC/SGW/MME), could set up the bi-directional transmission link corresponding to the application of every bar.DeNB can normally work, and tunnel server is disposed, and tunnel server can reach to the route of OMC/SGW/MME.

In the embodiment of the present invention, as shown in Figure 2, relay base station equipment can pass through RN-UE (CPE) and be connected to DeNB class Relay modal sets net topology, and DeNB is connected in PTN network.Relay base station equipment connection forms local area network (LAN) to LAN (local area network (LAN)) side of CPE, uses LAN IP, as: 192.168.0.* network segment address, gateway is 192.168.0.1, and wherein this IP address, LAN side can need configuration according to user.

In the embodiment of the present invention, need to carry out following data configuration: (1) relay base station equipment, the IP address of configured tunneling technique server, the IP address of LAN mouth and gateway in listening port and local area network (LAN), on relay base station equipment, allocating default route is its gateway RN-UE (CPE).(2) tunnel server (RN-server), the outside ip address of each relay base station equipment can be configured on tunnel server as the service IP address of tunnel server, tunnel server also configures an Operation and Maintenance IP address, tunnel server configuration is routed to connected gateway CE (three-tier switch).(3) router that tunnel server connects needs to configure some routes: support that message can arrive OMC (Operation and Maintenance Center, operation maintenance center)/SGW/MME, or allow message can go to RN-UE (CPE) through PGW.

Based on above-mentioned analysis, as shown in Figure 4, be the handling principle figure of the uplink message of class Relay pattern.All uplink messages mutual with external network (as signaling/business/OM (Operation and Maintenance) etc.) are encapsulated a tunnel head by relay base station equipment, this tunnel head adopts the protocol encapsulation form of IP/UDP (User Datagram Packet, user data package).In IP head, object IP address is the IP address of tunnel server, and source IP address is the LAN IP address in the local area network (LAN) of relay base station equipment.In UDP head, destination slogan is the specific listening port of tunnel server, and source port number is that relay base station equipment is according to the application such as signaling/business/OM assignment of port numbers from the port pool of each application of advance planning.

The uplink message carrying tunnel head is sent to DeNB by CPE by relay base station equipment.In the process, the source IP address of tunnel head can be revised as WAN (wide area network) the IP address of relay base station equipment by the nat feature of CPE by the LAN IP address of relay base station equipment.Further, uplink message is added GTP (GPRS Tunneling Protocol as business packet by DeNB, GPRS Tunnel Protocol) hair delivers to SGW, SGW is after taking off GTP head, find that the object IP address of tunnel head is the IP address of tunnel server, uplink message is sent to tunnel server.Further, tunnel head cuts out by tunnel server, is reduced to the uplink message that original relay base station equipment needs to send, according to the object IP address of original uplink message, uplink message is sent to the network elements such as OMC/MME/SGW.

Based on said process, the uplink message of relay base station equipment can be ensured, after passing through CPE, be sent in SGW in the service message mode of CPE, SGW is according to the IP information in tunnel head, can be correct forward the packet to tunnel server, this message, again according to tunnel information, is correctly transmitted to corresponding network element and processes by tunnel server.Concrete, from the uplink message that UE sends, now also do not add tunnel head.Uplink message is after relay base station equipment, except adding GTPU (GPRS TunnelingProtocol User Plane, GPRS Tunnel Protocol user face) outside head, also need additionally to add tunnel head, the source IP address of this tunnel head is the IP address of this relay base station equipment LAN side under CPE, object IP address is the IP address of tunnel server, and source port number is arbitrary end slogan, and destination slogan is the port numbers that tunnel server distributes to this relay base station equipment.Uplink message is by after CPE, and the source IP address of tunnel head and source port number can change, and the source IP address of its tunnel head changes to the WAN mouth IP address of CPE, and source port number also changes, and its corresponding relation can be recorded in the NAT table of CPE.Object IP address and destination slogan constant, be still IP address and the port numbers of tunnel server.After DeNB, increase IP head, UDP head and GTPU head that DeNB adds in uplink message.Uplink message is after being sent to SGW, and take off the IP head of DeNB encapsulation, UDP head and GTPU head, now IP and the UDP head of this uplink message is tunnel head, according to the object IP address in tunnel head, is sent in tunnel server by uplink message.Tunnel server, if first time receives the uplink message carrying tunnel head, can set up path according to information in this tunnel head.Subsequent packet, when being sent to tunnel server, first being taken off tunnel head, is then sent out, and uplink message is normal uplink message, then returns to SGW.After SGW, eliminate IP, UDP and GTPU head of relay base station equipment, be sent to service server.

Tunnel server adopts NP (Network Processor, network processing unit) processor processes tunnel, the handling principle of NP processor is coupling filtration and increase, deletes message protocol head, function such as amendment protocol header fields etc., its agreement supported has two layers, three layers of network protocol stack, four layer protocols etc.

Tunnel server is supported the configuration of two class IP addresses: a class is support the tunnel transmission technique of relay base station equipment, can the service IP address of all relay base station equipment be configured on tunnel server, thus regard tunnel server as relay base station equipment, then ensure that class Relay framework is without the need to modifying to the configuration of the route such as core net, OMC, PTN-CE, each network element every will carry out communicating with relay base station equipment, all to first be dealt into encapsulation tunnel on tunnel server, then transmit.Another kind of IP address is the Operation and Maintenance IP address of tunnel server itself, be used for remote maintenance control tunnel server.

Tunnel server receives two class message flows, a class is the message carrying tunnel head of the relay base station equipment from core net SGW, and another kind of is the message of the Operation and Maintenance of far-end PC.As shown in Figure 5, be flow chart that tunnel server processes uplink message (namely from the message carrying tunnel head of the relay base station equipment of core net SGW).Support that the tunnel transmission technique handling process of relay base station equipment comprises:

A, configure on tunnel server binary coupling (object IP address, destination interface) rule, the object IP address of this binary matched rule is the IP address of tunnel server, destination interface is the specific listening port that all relay base station equipment is all known, the specific listening port that namely tunnel server is corresponding.

B, the NP processor of tunnel server receives the uplink message carrying tunnel head of the relay base station equipment from core net SGW first, after this tunnel head matches binary matched rule, uplink message is sent to PPC (PowerPC, i.e. a kind of central processing unit of reduced instruction set computer framework) NPHost (network processing unit main frame) module on processor carries out packet parsing, and extract relevant information, and according to the source IP address of tunnel head, object IP address, source port, destination interface, two-way quaternary transmission flow (stream) is set up in the source IP address of the original uplink message of the relay base station equipment in tunnel head and object IP address.Wherein, transmission flow is the transmission channel of certain type application specific on NP processor, meets this quaternary transmission rule, then carries out the process of specifying, as added, deleting, revise the first-class operation of agreement.

The NP processor of c, tunnel server receives the uplink message carrying tunnel head from the relay base station equipment of core net SGW, if fragment packets, the NP processor of tunnel server first carries out IP fragmentation and reassembly.The NP processor of tunnel server preferentially carries out the quaternary coupling of the source IP address of tunnel head, object IP address, source port, destination interface.Wherein, source IP address is the WAN mouth IP address of CPE outside; Object IP address is the IP address of tunnel server, is also the external business IP address of relay base station equipment simultaneously; Source port is the source port that relay base station equipment distributes according to each type of service; Destination interface is the specific listening port of tunnel server.If the match is successful, forward d to; If it fails to match, forward f to.

The NP processor of d, tunnel server carries out the stripping of UDP/IP tunnel head, and remaining part is the initial IP message that relay base station equipment sends, namely original uplink message.Forward e to afterwards.

The object IP address lookup route of the original uplink message that the NP processor of e, tunnel server sends according to relay base station equipment, is sent to gateway CE or special network element by original uplink message.

The NP processor of f, tunnel server proceeds the object IP address of tunnel head, the binary coupling of destination interface to uplink message, if match, forwards NPHost module to, sets up two-way quaternary transmission flow.

As shown in Figure 6, for the schematic flow sheet of the upper row relax of NPHost module, this flow process can comprise: a, NPHost module receives the uplink message carrying tunnel head, the source IP address of the original uplink message that extraction tunnel header and relay base station equipment send and object IP address.B, NPHost module compares with the source IP address preserved before and object IP address the source IP address of original uplink message and object IP address.C, NPHost module judges whether to need to set up quaternary transmission flow, if need to set up quaternary transmission flow, forwards d to; If do not need to set up quaternary transmission flow, forward f to.D, NPHost module uses source IP address and the object IP address of tunnel header and original uplink message, configuration rule information, sets up two-way quaternary transmission flow, forwards e to.E, NPHost module preserves source IP address and the object IP address of tunnel header and original uplink message.Whether source IP address and the source port of f, NPHost module check tunnel head change.Wherein, due to the nat feature of CPE, have the source IP address of amendment tunnel head and the possibility of source port, therefore, if the source IP address of tunnel head and/or source port change, forward g to; If source IP address and the source port of tunnel head do not change, forward h to.The regularization term of quaternary transmission flow on g, NPHost module amendment NP processor, and preserve fresh information, i.e. source IP address after the change of tunnel head and/or source port.H, NPHost module abandons channel message.

As shown in Figure 7, for the schematic diagram of the downlink processing data of class Relay pattern, in the downstream direction, owing to tunnel server being configured with the IP address of relay base station equipment, the downlink message (IP bag) sent by MME/SGW/OMC, by CE, can directly be sent on tunnel server, behind the tunnel server coupling source IP address of downlink message and object IP address, add tunnel server to the tunnel head of CPE, be sent on PGW by CE; Be sent to tunnel head SGW adding GTP by PGW, this business packet is sent to DeNB by SGW, cuts out GTP hair deliver to CPE by DeNB; The WAN mouth IP address transition of relay base station equipment is LAN mouth IP address by the NAT translation function of CPE, according to the payload IP message of the inside carrying carries out different Business Processing after cutting out tunnel head by relay base station equipment.

In the embodiment of the present invention, as shown in Figure 8, be the downlink data handling process schematic diagram of tunnel server, this flow process specifically can comprise: the IP that a, NP processor receives from MME/SGW/OMC wraps, carry out the binary coupling of source IP address and object IP address, if the match is successful, then forward b to; If it fails to match, then forward f to; Wherein, when up NPHost module sets up two-way quaternary transmission flow, add source IP address and the object IP address of the descending original message needing the relay base station equipment of coupling to send.B, NP processor adds the tunnel head of tunnel server to the IP/UDP of CPE; Wherein, the information of this tunnel head is up NPHost module when setting up two-way quaternary transmission flow, the source IP address of original message sent with relay base station equipment of acquisition and the tunnel header of object IP addresses match.C, NP processor judges that message length, whether more than MTU (Maximum TransformUnit, MTU), if exceeded, carries out burst after interpolation tunnel head.D, NP processor finds gateway according to route, and in message, add MAC (Media Access Control, network interface hardware address) head.Message after e, NP process is sent to gateway CE by PHY (physics) mouth.F, dropping packets.

Based on said process, in the downstream direction, other network element (as MME/SGW/OMC etc.) sends to the message of relay base station equipment, first tunnel server is sent to, tunnel server is by inquiry source IP address and object IP address, be sent to PGW after adding corresponding tunnel head to message, and then arrive SGW.Afterwards, SGW, according to tunnel information, passes through DeNB and CPE after IP, UDP and GTPU head of correct interpolation CPE business datum, on final arrival relay base station equipment.By the design of tunnel head, tunnel server can pass through the up message of relay base station equipment, by the mode of self study, creates the message path between relay base station equipment and different network elements, to realize the fine-grained management of data flow.

Such as; from the downlink message (downlink service data message) that service server sends; now also do not add tunnel head and GTPU head; downlink message is after SGW; add the GTPU head of corresponding relay base station equipment; GTPU of this GTPU head and normal Base Station equipment as broad as long, still do not add tunnel head.After downlink message is sent to tunnel server, tunnel server is according to the tunnel header of uplink message through out-of-date record, tunnel head is inserted to downlink message, the source IP address of this tunnel head is the IP address of tunnel server, object IP address is the WAN mouth IP address of CPE, source port number is the port numbers of tunnel server, and destination slogan is the port numbers of uplink message through the CPE of out-of-date record.Downlink message is returned to PGW, then delivers to SGW, and SGW according to the IP address of CPE, then increases GTPU head corresponding to DeNB to downlink message.Downlink message is sent to DeNB, and DeNB can take off IP, UDP and GTPU head of its correspondence, and this downlink message is sent to CPE.CPE receives downlink message, can according to the NAT forwarding-table item of uplink message through out-of-date record, find IP address and the port numbers of corresponding relay base station equipment, amendment tunnel head, it is the IP address, LAN side that relay base station equipment obtains under CPE by object IP address change, destination slogan is the port numbers of relay base station equipment, and this downlink message is forwarded to relay base station equipment.After relay base station equipment receives downlink message, first remove tunnel head, remaining message is the downlink message that service server sends, and the method process that relay base station equipment processes according to normal base station, namely removing GTPU head, issuing UE by eating dishes without rice or wine.So far, the process of downlink message completes.

In the embodiment of the present invention, a tunnel server can also support the transmission of multiple relay base station equipment, is configured on tunnel server by the outside ip address of each relay base station equipment, and tunnel server can distinguish the transmission link of different relay base station equipment.In the case, the maximum bandwidth that the transmission total bandwidth of all relay base station equipment is no more than this tunnel server and can supports is needed to ensure.

In the embodiment of the present invention, in class Relay networking plan, use CPE as the bridge connecting relay base station equipment and DeNB, a CPE can mount multiple relay base station equipment, the relay base station equipment of all mountings forms a Small-scale LAN, and utilizes the nat feature of CPE to communicate with ext nal network element.Further, the nat feature of CPE has the behavior of source IP address and the source port changing communication connection (namely revising source IP address and source port that relay base station equipment sends message).For such behavior, tunnel server achieves upstream self-teaching characteristic, can perception upstream tunnel information change, and make corresponding process flow modifications, perfection solves the problem of the tunneling data source port dynamic change that the nat feature due to CPE is introduced, ensure that Business Stream does not interrupt, can constantly change caused abnormal conditions due to the CPE service IP address that causes of quality instability of eating dishes without rice or wine by correct methods.Further, if the IP address of each relay base station equipment is all configured on tunnel server, so for each network element MME SGW OMC, be exactly the communication with tunnel server with the communication of relay base station equipment, without the need to revising network configuration and the routing relation of these network elements, accomplish network element completely without impact.

Embodiment two

Based on the inventive concept same with said method, a kind of system of message transmissions is additionally provided in the embodiment of the present invention, described system specifically comprises: relay base station equipment, for receiving the uplink message from subscriber equipment, to uplink message encapsulation GTPU head and tunnel head, and uplink message is sent to CPE; The source IP address of described tunnel head is the private network IP address of relay base station equipment, and object IP address is the IP address of tunnel server, and destination interface is the specific listening port of tunnel server; CPE, for receiving the uplink message from relay base station equipment, being revised as the public network IP address of described relay base station equipment, and uplink message is sent to donor base station DeNB by the source IP address of tunnel head; DeNB, for receiving the uplink message from CPE, encapsulating corresponding IP+ User Datagram Protoco (UDP) UDP+GTPU head to uplink message, and uplink message is sent to gateway SGW; SGW, for receiving the uplink message from DeNB, the IP+UDP+GTPU head that DeNB described in decapsulation encapsulates in uplink message, and the object IP address of the described tunnel head encapsulated in uplink message according to described relay base station equipment, be sent to described tunnel server by uplink message; Tunnel server, for receiving the uplink message from SGW, the tunnel head that relay base station equipment described in decapsulation encapsulates in uplink message, and uplink message is sent to described SGW; SGW, also for utilizing the object IP address of uplink message, sends to object equipment by uplink message.

In the embodiment of the present invention, described SGW, also for receiving the downlink message from described object equipment, encapsulating GTPU head corresponding to described relay base station equipment to downlink message, and downlink message is sent to described tunnel server; Described tunnel server, also for receiving the downlink message from described SGW, to downlink message encapsulation tunnel head, and sends to described SGW by downlink message; Wherein, the source IP address of described tunnel head is the IP address of described tunnel server, and the object IP address of described tunnel head is the public network IP address of described relay base station equipment, and the source port of described tunnel head is the specific listening port of described tunnel server; Described SGW, also for receiving the downlink message from described tunnel server, encapsulating IP+UDP+GTPU head corresponding to described DeNB to downlink message, and downlink message is sent to described DeNB; Described DeNB, also for receiving the downlink message from described SGW, the IP+UDP+GTPU head that SGW described in decapsulation encapsulates in downlink message, and downlink message is sent to described CPE; Described CPE, also for receiving the downlink message from DeNB, being revised as the private network IP address of described relay base station equipment, and downlink message is sent to relay base station equipment by the object IP address of tunnel head; Described relay base station equipment, also for receiving the downlink message from CPE, the tunnel head that tunnel server described in decapsulation encapsulates in downlink message, and utilize the object IP address of downlink message to forward.

Described tunnel server, specifically for configuration binary matched rule, the object IP address of described binary matched rule is the IP address of described tunnel server, and destination interface is the specific listening port of described tunnel server; After receiving the uplink message carrying tunnel head, if the object IP address of described tunnel head is the IP address of described tunnel server, destination interface is the specific listening port of described tunnel server, then confirm that described uplink message matches described binary matched rule, and resolve the content of carrying in the content and described uplink message of carrying in described tunnel head, and utilize the content maintenance message repeating list item carried in the content and described uplink message of carrying in described tunnel head;

Wherein, in described message repeating list item, record the source port of described tunnel head, destination interface, source IP address, object IP address, and, the source IP address of described uplink message and object IP address.

Described tunnel server, specifically in the process utilizing the content maintenance message repeating list item carried in the content and described uplink message of carrying in described tunnel head, judge the source IP address and the object IP address that whether have recorded described uplink message in message repeating list item; If not, then set up message repeating list item, and in described message repeating list item, record the source port of described tunnel head, destination interface, source IP address, object IP address, and, the source IP address of described uplink message and object IP address; If so, then judge whether the source port that carries in described tunnel head and source IP address change; If changed, then utilize source port and the source IP address of the tunnel head recorded in the source port and source IP address amendment message repeating list item carried in described tunnel head; If do not changed, then keep message repeating list item constant.

Described tunnel server, specifically for receiving the downlink message from described SGW, in process to downlink message encapsulation tunnel head, receive the downlink message from described SGW, utilize source IP address and the object IP address of the uplink message recorded in message repeating list item described in the source IP address of described downlink message and object IP address lookup, to obtain the source port of the tunnel head recorded in described message repeating list item, destination interface, source IP address, object IP address, utilize the source port of the tunnel head recorded in described message repeating list item, destination interface, source IP address, object IP address is to described downlink message encapsulation tunnel head, be the destination interface of the tunnel head recorded in described message repeating list item to make the source port of the tunnel head encapsulated in described downlink message, the destination interface of the tunnel head encapsulated in described downlink message is the source port of the tunnel head recorded in described message repeating list item, the source IP address of the tunnel head encapsulated in described downlink message is the object IP address of the tunnel head recorded in described message repeating list item, the object IP address of the tunnel head encapsulated in described downlink message is the source IP address of the tunnel head recorded in described message repeating list item.

Wherein, the modules of apparatus of the present invention can be integrated in one, and also can be separated deployment.Above-mentioned module can merge into a module, also can split into multiple submodule further.

Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform method described in each embodiment of the present invention.It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.It will be appreciated by those skilled in the art that the module in the device in embodiment can carry out being distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.The module of above-described embodiment can merge into a module, also can split into multiple submodule further.The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.Be only several specific embodiment of the present invention above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.

Claims (10)

1. a method for message transmissions, is characterized in that, said method comprising the steps of:

Relay base station equipment receives the uplink message from subscriber equipment, to uplink message encapsulation general packet radio service technology Tunneling Protocol-User face GTPU head and tunnel head, and uplink message is sent to ustomer premises access equipment CPE; The source IP address of described tunnel head is the private network IP address of relay base station equipment, and object IP address is the IP address of tunnel server, and destination interface is the specific listening port of tunnel server;

Described CPE receives the uplink message from relay base station equipment, the source IP address of tunnel head is revised as the public network IP address of described relay base station equipment, and uplink message is sent to donor base station DeNB;

Described DeNB receives the uplink message from CPE, encapsulates corresponding IP+ User Datagram Protoco (UDP) UDP+GTPU head, and uplink message is sent to gateway SGW to uplink message;

Described SGW receives the uplink message from DeNB, the IP+UDP+GTPU head that DeNB described in decapsulation encapsulates in uplink message, and the object IP address of the described tunnel head encapsulated in uplink message according to described relay base station equipment, uplink message is sent to described tunnel server;

Described tunnel server receives the uplink message from SGW, the tunnel head that relay base station equipment described in decapsulation encapsulates in uplink message, and uplink message is sent to described SGW;

Described SGW utilizes the object IP address of uplink message, uplink message is sent to object equipment.

2. the method for claim 1, is characterized in that, described method comprises further:

Described SGW receives the downlink message from described object equipment, encapsulates GTPU head corresponding to described relay base station equipment, and downlink message is sent to described tunnel server to downlink message;

Described tunnel server receives the downlink message from described SGW, to downlink message encapsulation tunnel head, and downlink message is sent to described SGW; Wherein, the source IP address of described tunnel head is the IP address of described tunnel server, and the object IP address of described tunnel head is the public network IP address of described relay base station equipment, and the source port of described tunnel head is the specific listening port of described tunnel server;

Described SGW receives the downlink message from described tunnel server, encapsulates IP+UDP+GTPU head corresponding to described DeNB, and downlink message is sent to described DeNB to downlink message;

Described DeNB receives the downlink message from described SGW, the IP+UDP+GTPU head that SGW described in decapsulation encapsulates in downlink message, and downlink message is sent to described CPE;

Described CPE receives the downlink message from described DeNB, the object IP address of tunnel head is revised as the private network IP address of described relay base station equipment, and downlink message is sent to described relay base station equipment;

Described relay base station equipment receives the downlink message from described CPE, the tunnel head that tunnel server described in decapsulation encapsulates in downlink message, and utilizes the object IP address of downlink message to forward.

3. method as claimed in claim 2, it is characterized in that, described method comprises further:

Described tunnel server configuration binary matched rule, the object IP address of described binary matched rule is the IP address of described tunnel server, and destination interface is the specific listening port of described tunnel server;

Described tunnel server is after receiving the uplink message carrying tunnel head, if the object IP address of described tunnel head is the IP address of described tunnel server, destination interface is the specific listening port of described tunnel server, then described tunnel server confirms that described uplink message matches described binary matched rule, and resolve the content of carrying in the content and described uplink message of carrying in described tunnel head, and utilize the content maintenance message repeating list item carried in the content and described uplink message of carrying in described tunnel head;

Wherein, in described message repeating list item, record the source port of described tunnel head, destination interface, source IP address, object IP address, and, the source IP address of described uplink message and object IP address.

4. method as claimed in claim 3, it is characterized in that, described tunnel server utilizes the content maintenance message repeating list item carried in the content and described uplink message of carrying in described tunnel head, comprising:

Described tunnel server judges the source IP address and the object IP address that whether have recorded described uplink message in message repeating list item; If not, then described tunnel server sets up message repeating list item, and in described message repeating list item, record the source port of described tunnel head, destination interface, source IP address, object IP address, and, the source IP address of described uplink message and object IP address;

If so, then described tunnel server judges whether the source port that carries in described tunnel head and source IP address change; If changed, then described tunnel server utilizes source port and the source IP address of the tunnel head recorded in the source port and source IP address amendment message repeating list item carried in described tunnel head; If do not changed, then described tunnel server keeps message repeating list item constant.

5. method as claimed in claim 3, is characterized in that, described tunnel server receives the downlink message from described SGW, to the process of downlink message encapsulation tunnel head, specifically comprises:

Described tunnel server receives the downlink message from described SGW, utilize source IP address and the object IP address of the uplink message recorded in message repeating list item described in the source IP address of described downlink message and object IP address lookup, to obtain the source port of the tunnel head recorded in described message repeating list item, destination interface, source IP address, object IP address;

Described tunnel server utilizes the source port of the tunnel head recorded in described message repeating list item, destination interface, source IP address, object IP address is to described downlink message encapsulation tunnel head, be the destination interface of the tunnel head recorded in described message repeating list item to make the source port of the tunnel head encapsulated in described downlink message, the destination interface of the tunnel head encapsulated in described downlink message is the source port of the tunnel head recorded in described message repeating list item, the source IP address of the tunnel head encapsulated in described downlink message is the object IP address of the tunnel head recorded in described message repeating list item, the object IP address of the tunnel head encapsulated in described downlink message is the source IP address of the tunnel head recorded in described message repeating list item.

6. a system for message transmissions, is characterized in that, described system specifically comprises:

Relay base station equipment, for receiving the uplink message from subscriber equipment, to uplink message encapsulation general packet radio service technology Tunneling Protocol-User face GTPU head and tunnel head, and sends to ustomer premises access equipment CPE by uplink message; The source IP address of described tunnel head is the private network IP address of relay base station equipment, and object IP address is the IP address of tunnel server, and destination interface is the specific listening port of tunnel server;

CPE, for receiving the uplink message from relay base station equipment, being revised as the public network IP address of described relay base station equipment, and uplink message is sent to donor base station DeNB by the source IP address of tunnel head;

DeNB, for receiving the uplink message from CPE, encapsulating corresponding IP+ User Datagram Protoco (UDP) UDP+GTPU head to uplink message, and uplink message is sent to gateway SGW;

SGW, for receiving the uplink message from DeNB, the IP+UDP+GTPU head that DeNB described in decapsulation encapsulates in uplink message, and the object IP address of the described tunnel head encapsulated in uplink message according to described relay base station equipment, be sent to described tunnel server by uplink message;

Tunnel server, for receiving the uplink message from SGW, the tunnel head that relay base station equipment described in decapsulation encapsulates in uplink message, and uplink message is sent to described SGW;

SGW, also for utilizing the object IP address of uplink message, sends to object equipment by uplink message.

7. system as claimed in claim 6, is characterized in that,

Described SGW, also for receiving the downlink message from described object equipment, encapsulating GTPU head corresponding to described relay base station equipment to downlink message, and downlink message is sent to described tunnel server;

Described tunnel server, also for receiving the downlink message from described SGW, to downlink message encapsulation tunnel head, and sends to described SGW by downlink message; Wherein, the source IP address of described tunnel head is the IP address of described tunnel server, and the object IP address of described tunnel head is the public network IP address of described relay base station equipment, and the source port of described tunnel head is the specific listening port of described tunnel server;

Described SGW, also for receiving the downlink message from described tunnel server, encapsulating IP+UDP+GTPU head corresponding to described DeNB to downlink message, and downlink message is sent to described DeNB;

Described DeNB, also for receiving the downlink message from described SGW, the IP+UDP+GTPU head that SGW described in decapsulation encapsulates in downlink message, and downlink message is sent to described CPE;

Described CPE, also for receiving the downlink message from DeNB, being revised as the private network IP address of described relay base station equipment, and downlink message is sent to relay base station equipment by the object IP address of tunnel head;

Described relay base station equipment, also for receiving the downlink message from CPE, the tunnel head that tunnel server described in decapsulation encapsulates in downlink message, and utilize the object IP address of downlink message to forward.

8. system as claimed in claim 7, is characterized in that,

Described tunnel server, specifically for configuration binary matched rule, the object IP address of described binary matched rule is the IP address of described tunnel server, and destination interface is the specific listening port of described tunnel server; After receiving the uplink message carrying tunnel head, if the object IP address of described tunnel head is the IP address of described tunnel server, destination interface is the specific listening port of described tunnel server, then confirm that described uplink message matches described binary matched rule, and resolve the content of carrying in the content and described uplink message of carrying in described tunnel head, and utilize the content maintenance message repeating list item carried in the content and described uplink message of carrying in described tunnel head;

Wherein, in described message repeating list item, record the source port of described tunnel head, destination interface, source IP address, object IP address, and, the source IP address of described uplink message and object IP address.

9. system as claimed in claim 8, is characterized in that,

Described tunnel server, specifically in the process utilizing the content maintenance message repeating list item carried in the content and described uplink message of carrying in described tunnel head, judge the source IP address and the object IP address that whether have recorded described uplink message in message repeating list item; If not, then set up message repeating list item, and in described message repeating list item, record the source port of described tunnel head, destination interface, source IP address, object IP address, and, the source IP address of described uplink message and object IP address; If so, then judge whether the source port that carries in described tunnel head and source IP address change; If changed, then utilize source port and the source IP address of the tunnel head recorded in the source port and source IP address amendment message repeating list item carried in described tunnel head; If do not changed, then keep message repeating list item constant.

10. system as claimed in claim 8, is characterized in that,

Described tunnel server, specifically for receiving the downlink message from described SGW, in process to downlink message encapsulation tunnel head, receive the downlink message from described SGW, utilize source IP address and the object IP address of the uplink message recorded in message repeating list item described in the source IP address of described downlink message and object IP address lookup, to obtain the source port of the tunnel head recorded in described message repeating list item, destination interface, source IP address, object IP address, utilize the source port of the tunnel head recorded in described message repeating list item, destination interface, source IP address, object IP address is to described downlink message encapsulation tunnel head, be the destination interface of the tunnel head recorded in described message repeating list item to make the source port of the tunnel head encapsulated in described downlink message, the destination interface of the tunnel head encapsulated in described downlink message is the source port of the tunnel head recorded in described message repeating list item, the source IP address of the tunnel head encapsulated in described downlink message is the object IP address of the tunnel head recorded in described message repeating list item, the object IP address of the tunnel head encapsulated in described downlink message is the source IP address of the tunnel head recorded in described message repeating list item.