CN102821170A - Address allocation method and host base station - Google Patents

Abstract

The invention discloses an address allocation method and a host base station. The method comprises the following steps that a target host base station (DeNB) of an MRN (mobile relay node) receives first IP (Internet protocol) address allocation auxiliary information sent by the source DeNB of the MRN, and the IP address is allocated for the MRN according to the first IP address allocation auxiliary information. The address allocation method and the host base station have the advantages that the address allocation problem for MRN in the switching process is solved under the re-positioning condition of a PGW(Payment Gateway) serving the MRN in the MRN switching process, and further, the service continuity of a terminal is ensured.

Description

A kind of address distribution method and host base station

Technical field

The present invention relates to wireless communication technology field, relate in particular to a kind of address distribution method and host base station.

Background technology

In wireless relay (Wireless Relay) technology in the LTE-Advanced standard that the 3GPP normal structure is released; Via node (Relay Node; Be called for short RN) UE that inserts its sub-district is provided and similar function of common eNB and service; Insert an eNB (being called for short DeNB, the host base station) who serves it through wave point with the mode that is similar to common UE again.Along with high-speed railway is built on a large scale and put into operation, the demand of communication constantly increases ON TRAINS.But because influence such as the train of high-speed mobile receives that Doppler frequency shift, sub-district are frequently switched and high ferro compartment penetration loss is big, the covering of existing network base station is difficult to satisfy the communication quality demand of high ferro.Therefore industry proposes at high ferro deploy via node, and this via node is commonly referred to mobile via node (MRN).As shown in Figure 1; Through moving relaying technique, can be so that the user in the high ferro train (UE1 and UE2) communicate with static relatively MRN, and MRN can switch between different DeNB in along with the high ferro moving process; Thereby switch when having avoided in the high ferro compartment a large number of users; Guarantee the communication quality between UE and the MRN, has been connected with backbone between the DeNB through Enhanced MR N in addition, can solve a series of problems of high ferro existence preferably.

Adopt framework shown in Fig. 1 (promptly with the identical framework of standardized R10fix relay if move relaying technique; Be commonly referred to framework 2); Then as shown in Figure 2, the initial DeNB (initial DeNB) when the SGW/PGW/relay GW of MRN (can be referred to as GW) will be arranged in it always and adhere to is when the MRN on the high ferro moves to when initial DeNB is far away; Behind the PGW of the data arrives MRN of UE; To transmit the DeNB that route could arrive service MRN via a plurality of DeNB, promptly have the oversize problem of routed path, and then cause the delay of UE data to increase.Therefore, can consider the routing optimality scheme, when MRN moves to when initial DeNB is far away, the GW of MRN is replaced by the built-in gateway of DeNB of service MRN.As shown in Figure 3, before MRN switched, its GW was positioned on the DeNB1; And MRN is by the base station functions service of DeNB3, and the data of UE at first arrive the GW function of DeNB1, routes to the base station functions of DeNB3 again through DeNB2; MRN can be relocated to the built-in GW of DeNB4 with its GW in handoff procedure; Reach DeNB4 thereby make the data of UE can be directly to, shorten path, reduce data delay.And do not support still in the existing standard flow process that the reorientation of PGW in the handoff procedure, one of them key issue are the address allocation problems that MRN under the reorientation situation takes place for the PGW of MRN.

Summary of the invention

The technical problem that the present invention will solve provides a kind of address distribution method and host base station, can be implemented under the situation of P-GW reorientation in the MRN handoff procedure, for MRN distributes the address, and then guarantees the business continuance at terminal.

For solving the problems of the technologies described above, a kind of address distribution method of the present invention comprises:

The target host base station (DeNB) of moving via node receives the first IP address assignment supplementary of the source DeNB transmission of moving via node, according to the said first IP address assignment supplementary, is said mobile via node distributing IP address.

Further, the said first IP address assignment supplementary comprises: packet data network (PDN) address style, double address bearing identification, address distribution wish and signatory PDN address.

Further, the first IP address assignment supplementary that target DeNB reception sources DeNB sends is said mobile via node distributing IP address, comprising:

The X2 interface handoff request message that said target DeNB reception sources DeNB sends is carried the said first IP address assignment supplementary in the said X2 interface handoff request message;

Said target DeNB is after receiving X2 interface handoff request message, and the built-in packet data gateway (P-GW) of target DeNB is said mobile via node distributing IP address.

Further, the first IP address assignment supplementary that target DeNB reception sources DeNB sends is said mobile via node distributing IP address, comprising:

The X2 interface handoff request message that said target DeNB reception sources DeNB sends is carried the said first IP address assignment supplementary in the said X2 interface handoff request message;

The built-in gateway (S-GW) of said target DeNB receives the S11 interface and creates conversation request message, sends the S5 interface to the built-in P-GW of target DeNB and creates conversation request message;

The built-in P-GW of said target DeNB according to the said first IP address assignment supplementary, is said mobile via node distributing IP address receiving after the S5 interface creates conversation request message.

Further, a kind of address distribution method comprises:

The target DeNB that moves via node receives the second IP address assignment supplementary from the source DeNB that moves via node; Receive the 3rd IP address assignment supplementary from the Mobility Management Entity (MME) that moves via node; According to said second IP address assignment supplementary and the 3rd IP address assignment supplementary, be said mobile via node distributing IP address.

Further, the said second IP address assignment supplementary comprises: the address distribution wish;

Said the 3rd IP address assignment supplementary comprises: PDN address style, double address bearing identification and signatory PDN address.

Further, DeNB receives the second IP address assignment supplementary to target DeNB from the source, receives the 3rd IP address assignment supplementary from MME, is said mobile via node distributing IP address, comprising:

The X2 interface handoff request message that said target DeNB reception sources DeNB sends is carried the said second IP address assignment supplementary in the said X2 interface handoff request message;

The built-in S-GW of said target DeNB receives the S11 interface of the MME transmission of moving via node and creates conversation request message; Said S11 interface is created in the conversation request message and is carried said the 3rd IP address assignment supplementary, carries said the 3rd IP address assignment supplementary through S5 interface establishment conversation request message and sends to the built-in P-GW of target DeNB;

The built-in P-GW of said target DeNB according to said second IP address assignment supplementary and the 3rd IP address assignment supplementary, is said mobile via node distributing IP address receiving after the S5 interface creates conversation request message.

Further, a kind of address distribution method comprises:

The target DeNB that moves via node receives the first IP address assignment supplementary of the source DeNB of mobile via node to said MME transmission from the MME that moves via node; According to the said first IP address assignment supplementary, be said mobile via node distributing IP address.

Further, the said first IP address assignment supplementary comprises: PDN address style, double address bearing identification, address distribution wish and signatory PDN address.

Further, target DeNB receives the first IP address assignment supplementary from the MME that moves via node, is said mobile via node distributing IP address, comprising:

Said target DeNB receives the S1 interface handoff request message that MME sends; Carry the said first IP address assignment supplementary in the said S1 interface handoff request message, the said first IP address assignment supplementary requires message to send to said MME by source DeNB through the switching of S1 interface;

Said target DeNB is after receiving the S1 interface handoff request message of MME, and the built-in P-GW of target DeNB is said mobile via node distributing IP address.

Further, target DeNB receives the first IP address assignment supplementary from the MME that moves via node, is said mobile via node distributing IP address, comprising:

Said target DeNB creates the said first IP address assignment supplementary of reception the conversation request message from S1 interface handoff request message or S11 interface that MME sends, and the said first IP address assignment supplementary requires message to send to said MME by source DeNB through the switching of S1 interface;

The built-in S-GW of said target DeNB receives said S11 interface and creates conversation request message; Send the S5 interface to the built-in P-GW of target DeNB and create conversation request message; Create when carrying the said first IP address assignment supplementary in the conversation request message at said S11 interface, the said first IP address assignment supplementary is carried in the said S5 interface establishment conversation request message;

The built-in P-GW of said target DeNB according to the said first IP address assignment supplementary, is said mobile via node distributing IP address receiving after the S5 interface creates conversation request message.

Further, a kind of address distribution method comprises:

The target DeNB that moves via node receives the second IP address assignment supplementary that the source DeNB that moves via node sends to said MME from the MME that moves via node; And receive the 3rd IP address assignment supplementary that this MME sends from said MME; According to said second IP address assignment supplementary and the 3rd IP address assignment supplementary, be said mobile via node distributing IP address.

Further, the said second IP address assignment supplementary comprises: the address distribution wish;

Said the 3rd IP address assignment supplementary comprises: PDN address style, double address bearing identification and signatory PDN address.

Further, target DeNB receives the second IP address assignment supplementary and the 3rd IP address assignment supplementary from the MME that moves via node, is said mobile via node distributing IP address, comprising:

Said target DeNB receives the S1 interface handoff request message that MME sends, and carries said second IP address assignment supplementary and the 3rd IP address assignment supplementary in the said S1 interface handoff request message; The said second IP address assignment supplementary requires message to send to said MME by source DeNB through the switching of S1 interface;

Said target DeNB is after receiving the S1 interface handoff request message of MME, and the built-in P-GW of target DeNB is said mobile via node distributing IP address.

Further, target DeNB receives the second IP address assignment supplementary and the 3rd IP address assignment supplementary from the MME that moves via node, is said mobile via node distributing IP address, comprising:

Said target DeNB creates said second IP address assignment supplementary of reception and the 3rd IP address assignment supplementary the conversation request message from S1 interface handoff request message and/or S11 interface that MME sends, and the said second IP address assignment supplementary sends to said MME by source DeNB through S1 interface handoff request message;

The built-in S-GW of said target DeNB receives said S11 interface and creates conversation request message; Send the S5 interface to the built-in P-GW of target DeNB and create conversation request message; When in S11 interface establishment conversation request message, carrying the second IP address assignment supplementary and/or the 3rd IP address assignment supplementary, the second IP address assignment supplementary and/or the 3rd IP address assignment supplementary are carried in the said S5 interface establishment conversation request message;

The built-in P-GW of said target DeNB according to said second IP address assignment supplementary and the 3rd IP address assignment supplementary, is said mobile via node distributing IP address receiving after the S5 interface creates conversation request message.

Further, a kind of host base station comprises: base station and packet data gateway, wherein:

Said base station is used to receive the first IP address assignment supplementary that the source DeNB that moves via node sends;

Said packet data gateway is used for the first IP address assignment supplementary according to the reception of said base station, is said mobile via node distributing IP address.

Further, a kind of host base station comprises: base station, gateway and packet data gateway, wherein:

Said base station is used for receiving the second IP address assignment supplementary from the source DeNB that moves via node;

Said gateway is used for receiving the 3rd IP address assignment supplementary from the MME that moves via node;

Said packet data gateway is used for being said mobile via node distributing IP address according to second IP address assignment supplementary of said base station reception and the 3rd IP address assignment supplementary of said gateway reception.

Further, a kind of host base station comprises: base station and packet data gateway, wherein:

Said base station is used for receiving the first IP address assignment supplementary of the source DeNB of mobile via node to said MME transmission from the MME that moves via node;

Said packet data gateway is used for the first IP address assignment supplementary according to the reception of said base station, is said mobile via node distributing IP address.

Further, a kind of host base station comprises: gateway and packet data gateway, wherein:

Said gateway is used for receiving the first IP address assignment supplementary of the source DeNB of mobile via node to said MME transmission from the MME that moves via node;

Said packet data gateway is used for the first IP address assignment supplementary according to said gateway reception, is said mobile via node distributing IP address.

Further, a kind of host base station comprises: base station and packet data gateway, wherein:

Said base station is used for receiving the second IP address assignment supplementary of the source DeNB of mobile via node to said MME transmission from the MME that moves via node, and receives the 3rd IP address assignment supplementary that this MME sends from said MME;

Said packet data gateway is used for the second IP address assignment supplementary and the 3rd IP address assignment supplementary according to the reception of said base station, is said mobile via node distributing IP address.

Further, a kind of host base station comprises: gateway and packet data gateway, wherein:

Said gateway is used for receiving the second IP address assignment supplementary of the source DeNB of mobile via node to said MME transmission from the MME that moves via node, and receives the 3rd IP address assignment supplementary that this MME sends from said MME;

Said packet data gateway is used for the second IP address assignment supplementary and the 3rd IP address assignment supplementary according to said gateway reception, is said mobile via node distributing IP address.

Further, a kind of host base station comprises: base station, gateway and packet data gateway, wherein:

Said base station is used for receiving the second IP address assignment supplementary of the source DeNB of mobile via node to said MME transmission from the MME that moves via node;

Said gateway is used for receiving the 3rd IP address assignment supplementary that this MME sends from said MME;

Said packet data gateway is used for being said mobile via node distributing IP address according to second IP address assignment supplementary of said base station reception and the 3rd IP address assignment supplementary of said gateway reception.

In sum, the present invention can take place under the situation of reorientation at the PGW of service MRN in the MRN handoff procedure, the problem of distributing the address for MRN in the solution handoff procedure, and then the business continuance at assurance terminal.

Description of drawings

Fig. 1 moves the relay system configuration diagram under the high ferro scene;

Fig. 2 is that 2 times MRN of mobile relay framework switch sketch map;

Fig. 3 is that the MRN behind 2 times routing optimalities of mobile relay framework switches sketch map;

Fig. 4 is the schematic flow sheet of method embodiment one of the present invention;

Fig. 5 is the schematic flow sheet of method embodiment two of the present invention;

Fig. 6 is the schematic flow sheet of method embodiment three of the present invention;

Fig. 7 is the schematic flow sheet of method embodiment four of the present invention;

Fig. 8 is the Organization Chart of host of the present invention base station.

Embodiment

This execution mode proposes the address distribution method in a kind of handoff procedure, and this method comprises:

Source DeNB sends the first IP address assignment supplementary and gives target DeNB;

The first IP address assignment supplementary that target DeNB reception sources DeNB sends is according to the first IP address assignment supplementary, for moving via node distributing IP address.

The first IP address assignment supplementary comprises: PDN address style, double address bearing identification, address distribution wish and signatory PDN address.

Target DeNB comprises according to the first IP address assignment supplementary distributing IP address:

The packet data gateway for moving the via node service among the target DeNB is mobile via node distributing IP address according to the first IP address assignment supplementary.

Target DeNB comprises according to the first IP address assignment supplementary distributing IP address:

Target DeNB in switching set-up procedure or session set up distributing IP address in the process.

The first IP address assignment supplementary that target DeNB reception sources DeNB sends for moving via node distributing IP address, comprising:

The X2 interface handoff request message that target DeNB reception sources DeNB sends is carried the first IP address assignment supplementary in the X2 interface handoff request message;

Target DeNB is after receiving X2 interface handoff request message, and the built-in P-GW of target DeNB is mobile via node distributing IP address.Perhaps,

The first IP address assignment supplementary that target DeNB reception sources DeNB sends for moving via node distributing IP address, comprising:

The X2 interface handoff request message that target DeNB reception sources DeNB sends is carried the first IP address assignment supplementary in the X2 interface handoff request message;

The built-in S-GW of target DeNB receives the S11 interface and creates conversation request message, sends the S5 interface to the built-in P-GW of target DeNB and creates conversation request message;

The built-in P-GW of target DeNB according to the first IP address assignment supplementary, is to move via node distributing IP address receiving after the S5 interface creates conversation request message.

Address distribution method in the another kind of handoff procedure of this execution mode, this method comprises:

Source DeNB sends the second IP address assignment supplementary and gives target DeNB;

MME sends the 3rd IP address assignment supplementary and gives target DeNB;

DeNB receives the second IP address assignment supplementary to target DeNB from the source, receives the 3rd IP address assignment supplementary from MME, according to the second IP address assignment supplementary and the 3rd IP address assignment supplementary distributing IP address.

Source DeNB sends the second IP address assignment supplementary and gives target DeNB, comprising:

Source DeNB sends the second IP address assignment supplementary through X2 interface message and gives target DeNB; X2 interface message is X2 interface handoff request message.

The second IP address assignment supplementary comprises: the address distribution wish; The indication of address distribution wish is moved via node and whether is obtained the IP address through the DHCP mode.

The 3rd IP address assignment supplementary comprises: PDN address style, double address bearing identification and signatory PDN address.

MME sends the 3rd IP address assignment supplementary through the S11 interface message and gives the built-in gateway of target DeNB, and the built-in gateway of target DeNB is crossed the S5 interface message and sent the built-in packet data gateway of target DeNB that the 3rd IP address assignment supplementary switches for mobile via node.The S5 interface message is the device interior signaling.The S11 interface message is created conversation request message for the S11 interface; The S5 interface message is created conversation request message for the S5 interface.

The built-in packet data gateway of target DeNB according to the second IP address assignment supplementary and the 3rd IP address assignment supplementary, is to move via node distributing IP address receiving after the S5 interface creates conversation request message.

Address distribution method in the another kind of handoff procedure of this execution mode, this method comprises:

The source DeNB that moves via node sends the first IP address assignment supplementary to the Mobility Management Entity that moves via node;

The MME that moves via node sends to the first IP address assignment supplementary and moves the target DeNB that via node will switch to;

Target DeNB receives the first IP address assignment supplementary of the source DeNB of mobile via node to the MME transmission from MME, according to the first IP address assignment supplementary, be to move via node distributing IP address.

MME remains unchanged in the via node handoff procedure if move, and is then sent by source MME; MME changes in the via node handoff procedure if move, and after then source MME receives the S1 interface message, sends the S10 interface message and gives target MME.The S10 interface message is the forwarding RELOCATION REQUEST message, and comprises the first IP address assignment supplementary in the S10 interface message.

Target DeNB receives the first IP address assignment supplementary from the MME that moves via node, for moving via node distributing IP address, comprising:

Target DeNB receives the S1 interface handoff request message that MME sends, and carries the first IP address assignment supplementary in the S1 interface handoff request message, and the first IP address assignment supplementary requires message to send to MME by source DeNB through the switching of S1 interface;

Target DeNB is after receiving the S1 interface handoff request message of MME, and the built-in P-GW of target DeNB is mobile via node distributing IP address.Perhaps,

Target DeNB receives the first IP address assignment supplementary from the MME that moves via node, for moving via node distributing IP address, comprising:

Target DeNB creates the reception first IP address assignment supplementary the conversation request message from S1 interface handoff request message or S11 interface that MME sends, and the first IP address assignment supplementary requires message to send to MME by source DeNB through the switching of S1 interface;

The built-in S-GW of target DeNB receives the S11 interface and creates conversation request message; Send the S5 interface to the built-in P-GW of target DeNB and create conversation request message; When in S11 interface establishment conversation request message, carrying the first IP address assignment supplementary, the first IP address assignment supplementary is carried at the S5 interface creates in the conversation request message;

The built-in P-GW of target DeNB according to the first IP address assignment supplementary, is to move via node distributing IP address receiving after the S5 interface creates conversation request message

Address distribution method in the another kind of handoff procedure of this execution mode, this method comprises:

The source DeNB that moves via node sends the second IP address assignment supplementary to the Mobility Management Entity that moves via node;

The MME that moves via node sends to the second IP address assignment supplementary and moves the target DeNB that via node will switch to, and the 3rd IP address assignment supplementary is sent to target DeNB;

Target DeNB receives the second IP address assignment supplementary that the source DeNB that moves via node sends to MME from MME; And receive the 3rd IP address assignment supplementary that this MME sends from MME; According to the second IP address assignment supplementary and the 3rd IP address assignment supplementary, for moving via node distributing IP address.

MME remains unchanged in the via node handoff procedure if move, and is then sent by source MME; MME changes in the via node handoff procedure if move, and after then source MME receives the S1 interface message, sends the S10 interface message and gives target MME.The S10 interface message is the forwarding RELOCATION REQUEST message, and comprises the first IP address assignment supplementary in the S10 interface message.

Target DeNB receives the second IP address assignment supplementary and the 3rd IP address assignment supplementary from the MME that moves via node, for moving via node distributing IP address, comprising:

Target DeNB receives the S1 interface handoff request message that MME sends, and carries the second IP address assignment supplementary and the 3rd IP address assignment supplementary in the S1 interface handoff request message; The second IP address assignment supplementary requires message to send to MME by source DeNB through the switching of S1 interface;

Target DeNB is after receiving the S1 interface handoff request message of MME, and the built-in P-GW of target DeNB is mobile via node distributing IP address.Perhaps,

Target DeNB receives the second IP address assignment supplementary and the 3rd IP address assignment supplementary from the MME that moves via node, for moving via node distributing IP address, comprising:

Target DeNB creates reception second IP address assignment supplementary and the 3rd IP address assignment supplementary the conversation request message from S1 interface handoff request message and/or S11 interface that MME sends, and the second IP address assignment supplementary sends to MME by source DeNB through S1 interface handoff request message;

The built-in S-GW of target DeNB receives the S11 interface and creates conversation request message; Send the S5 interface to the built-in P-GW of target DeNB and create conversation request message; When in S11 interface establishment conversation request message, carrying the second IP address assignment supplementary and/or the 3rd IP address assignment supplementary, the second IP address assignment supplementary and/or the 3rd IP address assignment supplementary are carried in the S5 interface establishment conversation request message;

The built-in P-GW of target DeNB according to the second IP address assignment supplementary and the 3rd IP address assignment supplementary, is to move via node distributing IP address receiving after the S5 interface creates conversation request message.

For making the object of the invention, technical scheme and advantage clearer, hereinafter will combine accompanying drawing that embodiments of the invention are elaborated.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.

Embodiment one:

What present embodiment was described is that source DeNB sends to target DeNB through X2 interface message with the first IP address assignment supplementary, the method for target DeNB distributing IP address in switching set-up procedure.Fig. 4 has described the flow process of this embodiment.The source S-GW of MRN and source P-GW possibly be built among the DeNB of source in this embodiment, also possibly not be arranged in source DeNB, but are built among the initial DeNB (initial DeNB).

Step 401:MRN detects the signal of target DeNB sub-district in measuring process; And trigger the measurement and report incident and send measurement report and give source DeNB, after source DeNB need to confirm MRN switched to target DeNB, judge and target DeNB between have X2 interface; And switch back MRN and need not change MME; Then source DeNB is that MRN initiates the X2 switching, and source DeNB sends X2 interface handoff request (handover request) message to target DeNB, comprises the first IP address assignment supplementary in this handover request message; The first IP address assignment supplementary comprises: PDN address style (PDN type); Double address bearing identification (Dual Address Bearer Flag), address distribution wish (Address Allocation Preference), signatory PDN address (subscribed PDN address);

Wherein, PDN type; Dual Address Bearer Flag and subscribed PDN address are that the PGW of last MRN is that MME sends to PGW built-in among the DeNB of source in the process of MRN distributing IP address, Address Allocation Preference be MRN when adhering to PCO (the protocol configuration options) cell through MRN and PGW transparent transmission send to PGW built-in among the DeNB of source.In addition, also carry the contextual information of MRN and UE in the handoff request message.

After step 402: target DeNB received handover request message, its built-in PGW was MRN distributing IP address according to the first IP address assignment supplementary;

The built-in PGW of target DeNB is chosen as the type of MRN IP address allocated according to the PDN type, Dual Address Bearer Flag and the carrier policy that receive, then according to the address style distributing IP address of selecting.If comprise subscribed PDN address in the IP address assignment supplementary that receives, then PGW gives MRN with this address assignment; If Address Allocation Preference indication MRN obtains the IP address through the DHCP mode in the IP address assignment supplementary, then PGW is made as particular value 0.0.0.0 with the IP address PDN Address value of MRN.

Step 403: target DeNB creates after the MRN bearing resource relevant with UE context and reservation, sends the X2 interface switching request acknowledgement message and gives source DeNB, wherein is included as the MRN IP address allocated;

The address of MRN can be carried in the transparent transmission container (Target eNB To Source eNB Transparent Container) of source base station at target BS.

Step 404: source DeNB sends idle message RRC and connects reconfiguration message to MRN; This RRC connects and carries target DeNB in reconfiguration message and send to the switching command message (being included among " the Target eNB To Source eNB Transparent Container " in the X2 interface switching request acknowledgement message) of the transparent transmission of MRN through source DeNB, and source DeNB can connect reconfiguration message through this RRC the IP address of MRN is sent to MRN;

In addition, source DeNB can also send to MRN with the IP address of MRN through the S1/X2 interface message.

Step 405: in the handover execution stage; MRN from the source DeNB attachment removal and with target DeNB synchronously and set up RRC and be connected; After the RRC that target DeNB reception MRN sends reshuffles and accomplishes message; To the MME of MRN transmit path transfer request (path switch request) message, to upgrade S1 user plane and the chain of command path of MRN;

Comprise the IP address of the MRN that the built-in PGW of target DeNB distributes in the transfer request message of path, also comprise the SGW and the address of PGW (the target SGW/PGW of MRN) that are built in target DeNB, reorientate SGW and the PGW of MRN to assist MME.

The MME storage of step 406:MRN and the IP address of renewal MRN; And the address of the target SGW/PGW that sends according to target DeNB is the address that is built in SGW and the PGW of target DeNB with SGW and the PGW reorientation of MRN; The SGW of the MME of MRN in target DeNB send to create conversation request, the EPS beared information of the MRN that creates comprising need and the address of target P GW (being built in PGW among the target DeNB);

Step 407: target SGW creates the context of MRN, and sends the S5 interface to target P GW and create conversation request message;

Step 408: target P GW replys establishment conversational response message to target SGW after creating the context and EPS carrying of MRN;

Signaling in step 407 and the step 408 is the internal interface message of target DeNB.

Step 409: target SGW replys to the MME of MRN and creates conversational response message, accomplishes with context and the EPS carrying foundation of confirming MRN;

The MME of step 410:MRN is to target DeNB reverse-path transfer request acknowledge message.

MRN or target DeNB initiate the switching related procedure of MRN institute service UE then, like the path transfer request process of UE, are transferred to target DeNB place with S1 chain of command and user plane downlink path with UE.

Above-mentioned is target DeNB method for mobile via node distributing IP address in switching set-up procedure; In addition; Target DeNB receives the first IP address assignment supplementary in step 401 after; Also can receive the S11 interface at the built-in S-GW of target DeNB and create conversation request message not immediately for moving via node distributing IP address, and after the built-in P-GW transmission S5 interface of target DeNB is created conversation request message; Receiving after the S5 interface creates conversation request message, is to move via node distributing IP address by the built-in P-GW of target DeNB.

Embodiment two:

Present embodiment is described be target DeNB through X2 interface message with the S11 interface message DeNB and the MME acquisition IP address assignment supplementary from the source respectively, the method for target DeNB distributing IP address in the conversation establishing process.Fig. 5 has described the flow process of this embodiment.The source SGW of MRN and source PGW possibly be built among the DeNB of source in this embodiment, also possibly not be arranged in source DeNB, but are built among the initial DeNB (initial DeNB).

Step 501:MRN detects the signal of target DeNB sub-district in measuring process; And trigger the measurement and report incident and send measurement report to source DeNB; Source DeNB have X2 interface between judgement and the target DeNB, and MRN need not change MME after switching after confirming need MRN be switched to target DeNB; Then source DeNB is that MRN initiates the X2 switching; Source DeNB sends X2 interface handoff request (handover request) message to target DeNB, comprises the second IP address assignment supplementary in this handover request message, and the second IP address assignment supplementary comprises the address distribution wish;

In addition, also carry the contextual information of MRN and UE in the handoff request message.

Step 502: target DeNB creates after the MRN bearing resource relevant with UE context and reservation, sends the X2 interface switching request acknowledgement message and gives source DeNB;

Step 503: source DeNB sends idle message RRC and connects reconfiguration message to MRN, carries target DeNB sends to the transparent transmission of MRN through source DeNB switching command message in this RRC connection reconfiguration message;

Step 504: in the handover execution stage; MRN from the source DeNB attachment removal and with target DeNB synchronously and set up RRC and be connected; After the RRC that target DeNB reception MRN sends reshuffles and accomplishes message; To the MME of MRN transmit path transfer request (path switch request) message, to upgrade S1 user plane and the chain of command path of MRN;

Comprise the SGW that is built in target DeNB and the address of PGW (the target SGW/PGW of MRN) in the transfer request message of path, reorientate SGW and the PGW of MRN with auxiliary MME.

The address of the target SGW/PGW that the MME of step 505:MRN sends according to target DeNB is the address that is built in SGW and the PGW of target DeNB with SGW and the PGW reorientation of MRN; The SGW of the MME of MRN in target DeNB sends and creates conversation request; The EPS beared information of the MRN that sets up comprising needs, the address of target P GW (among the target DeNB built-in PGW) and the 3rd IP address assignment supplementary; The 3rd IP address assignment supplementary comprises: PDN address style (PDN type); Double address bearing identification (Dual Address Bearer Flag), signatory PDN address (subscribed PDN address);

Step 506: target SGW creates the context of MRN, and sends the S5 interface to target P GW and create conversation request message, comprises the 3rd IP address assignment supplementary in this message;

Step 507: target P GW is MRN distributing IP address according to the second IP address assignment supplementary and the 3rd IP address assignment supplementary;

Target P GW is chosen as the type of MRN IP address allocated according to the PDN type, Dual Address Bearer Flag and the carrier policy that receive, then according to the address style distributing IP address of selecting.If comprise subscribed PDN address in the IP address assignment supplementary that receives, then MRN PGW gives MRN with this address assignment; If Address Allocation Preference indication MRN obtains the IP address through the DHCP mode in the IP address assignment supplementary, then MRN PGW is made as particular value 0.0.0.0 with the IP address PDN Address value of MRN.

Step 508: target P GW replys establishment conversational response message to target SGW after creating the context and EPS carrying of MRN:

Signaling is the internal interface message of target DeNB in step 506 and the step 508.

Step 509: target SGW replys to the MME of MRN and creates conversational response message, accomplishes with context and the EPS carrying foundation of confirming MRN, comprises in this message that target P GW is the MRN IP address allocated;

The MME storage of step 5l0:MRN and the IP address of renewal MRN, and to target DeNB reverse-path transfer request acknowledge message, comprising target P GW in this message is the MRN IP address allocated;

Step 511: target DeNB sends to MRN with target P GW for the MRN IP address allocated, can pass through RRC message or S1/X2 message.

MRN or target DeNB initiate the switching related procedure of MRN institute service UE then, like the path transfer request process of UE, are transferred to target DeNB place with S1 chain of command and user plane downlink path with UE.

Embodiment three:

What present embodiment was described is the method for distributing IP address in the switching set-up procedure of target DeNB in S1 switches.Fig. 6 has described the said flow process of this embodiment.The source SGW of MRN and source PGW possibly be built among the DeNB of source in this embodiment, also possibly not be arranged in source DeNB, but are built among the initial DeNB (initial DeNB).

Step 601:MRN detects the signal of target DeNB sub-district in measuring process; And trigger the measurement and report incident and send measurement report to source DeNB; After source DeNB confirms need MRN be switched to target DeNB; There is not X2 interface between judgement and the target DeNB; Perhaps switch back MRN and need change MME, then source DeNB is that MRN initiates the S1 switching, and source DeNB sends the S1 interface and switches the source MME that requires (handover required) message to give MRN; Comprise the first IP address assignment supplementary in this handover required message, specifically comprise address distribution wish (Address Allocation Preference), PDN address style (PDN type), double address bearing identification (Dual Address Bearer Flag) and signatory PDN address (subscribed PDN address);

Wherein, PDN type; Dual Address Bearer Flag and subscribed PDN address are that the PGW of last MRN is that MME sends to PGW built-in among the DeNB of source in the process of MRN distributing IP address, Address Allocation Preference be MRN when adhering to PCO (the protocol configuration options) cell through MRN and PGW transparent transmission send to PGW built-in among the DeNB of source.The first IP address assignment supplementary can be carried in the transparent transmission container of target BS at source base station.

Step 602: source MME judges whether to select a new MME according to Base Station Identification or the target TAI of the target DeNB in the handoff request message that receives; If desired, then according to these two parameter select target MME, and to its transmission forwarding RELOCATION REQUEST message; Wherein carry source base station to target BS transparent transmission container; Target BS sign, target location district sign, information such as the contextual information of MRN comprise the first IP address assignment supplementary in this forwarding RELOCATION REQUEST message;

If need not select new MME, then step 602 and step 610 are skipped.

The target MME of step 603:MRN sends S1 interface handoff request message and gives target DeNB, wherein comprises the first IP address assignment supplementary;

Step 604: target P GW built-in among the target DeNB is MRN distributing IP address according to the first IP address assignment supplementary;

Target P GW is according to the PDN type that receives, and Dual Address Bearer Flag and carrier policy are chosen as the type of MRN IP address allocated, then according to the address style distributing IP address of selecting.If comprise subscribed PDN address in the IP address assignment supplementary that receives, then MRN PGW gives MRN with this address assignment; If Address Allocation Preference indication MRN obtains the IP address through the DHCP mode in the IP address assignment supplementary, then MRN PGW is made as particular value 0.0.0.0 with the IP address PDN Address value of MRN.

Step 605: target DeNB is that MRN and UE create context also for after the carrying reserved resource of MRN; Target MME to MRN sends switching request acknowledgement message; Comprise in this message that target P GW is the MRN IP address allocated; Can in source base station transparent transmission container, carry at target BS, can also comprise in this message that target DeNB goes up the IP address of target SGW and target P GW, reorientates SGW and the PGW of MRN with auxiliary mark MME;

The target MME storage of step 606:MRN and the IP address of renewal MRN; And the address of the target SGW/PGW that sends according to target DeNB is the address that is built in SGW and the PGW of target DeNB with SGW and the PGW reorientation of MRN; The MME of MRN SGW in target DeNB send to create conversation request, the EPS beared information of the MRN that creates comprising need and the address of target P GW (being built in PGW among the target DeNB);

Step 607: target SGW creates the context of MRN, and sends the establishment conversation request message to target P GW;

Step 608: target P GW replys establishment conversational response message to target SGW after creating the context and EPS carrying of MRN;

Signaling is internal interface message among the target DeNB in step 607 and the step 608.

Step 609: target SGW replys to the MME of MRN and creates conversational response message, accomplishes with context and the EPS carrying foundation of confirming MRN;

The target MME of step 610:MRN sends to source MME and transmits relocation response message, comprises in this message that target P GW is the MRN IP address allocated;

The source MME of step 611:MRN sends switching command message to source DeNB, comprises in this message that target P GW is the MRN IP address allocated;

Step 612: target DeNB sends the RRC reconfiguration message and gives MRN, and can carry target P GW in this message is the MRN IP address allocated.

Target DeNB can also send to MRN with target P GW for the MRN IP address allocated through S1/X2 message.

MRN or target DeNB initiate the switching related procedure of MRN institute service UE then, like the path transfer request process of UE, are transferred to target DeNB place with S1 chain of command and user plane downlink path with UE.

Above-mentioned is that target DeNB is after receiving the S1 interface handoff request message of MME; For moving the method for via node distributing IP address; In addition, target DeNB receives the first IP address assignment supplementary in step 603 after, also can be not immediately for moving via node distributing IP address; Receive the S11 interface at the built-in S-GW of target DeNB and create conversation request message; And after the built-in P-GW of target DeNB sends the S5 interface and creates conversation request message, receiving after the S5 interface creates conversation request message, be to move via node distributing IP address by the built-in P-GW of target DeNB;

Perhaps; MME creates conversation request message through the S11 interface in the step 606 the first IP address assignment supplementary is sent to the built-in S-GW of target DeNB; S-GW is after receiving S11 interface establishment conversation request message; After the built-in P-GW of target DeNB sends the S5 interface and creates conversation request message, receiving after the S5 interface creates conversation request message, be to move via node distributing IP address by the built-in P-GW of target DeNB.

Embodiment four:

What present embodiment was described is the method for distributing IP address in the establishment conversation procedure of target DeNB in S1 switches.Fig. 7 has described the said flow process of this embodiment.The source SGW of MRN and source PGW possibly be built among the DeNB of source in this embodiment, also possibly not be arranged in source DeNB, but are built among the initial DeNB (initial DeNB).

Step 701:MRN detects the signal of target DeNB sub-district in measuring process; And trigger the measurement and report incident and send measurement report to source DeNB; There is not X2 interface in source DeNB between judgement and the target DeNB after confirming need MRN be switched to target DeNB, perhaps switches back MRN and need change MME; Then source DeNB is that MRN initiates the S1 switching; Source DeNB sends the S1 interface and switches the source MME that requires (handover required) message to give MRN, comprises the second IP address assignment supplementary in this handover required message, specifically comprises address distribution wish (Address Allocation Preference);

Address Allocation Preference be MRN when adhering to PCO (the protocol configuration options) cell through MRN and PGW transparent transmission send to MRN PGW built-in among the DeNB of source.The second IP address assignment supplementary can be carried in the transparent transmission container of target BS at source base station.

Step 702: source MME judges whether to select a new MME according to Base Station Identification or the target TAI of the target DeNB in the handoff request message that receives; If desired then according to these two parameter select target MME; And to its transmission forwarding RELOCATION REQUEST message, wherein carry source base station, target BS sign, target location district sign to target BS transparent transmission container; Information such as the contextual information of MRN comprise the second IP address assignment supplementary in this forwarding RELOCATION REQUEST message;

If need not select new MME, then step 702 and step 710 are skipped.

The target MME of step 703:MRN sends S1 interface handoff request message and gives target DeNB; Wherein comprise the second IP address assignment supplementary; Target MME also in handoff request message with the PDN address style, double address bearing identification and signatory PDN address (being called the 3rd IP address assignment supplementary) send to target DeNB;

Step 704: target DeNB is that MRN and UE create context also for after the carrying reserved resource of MRN; Target MME to MRN sends switching request acknowledgement message; Can also comprise in this message that target DeNB goes up the IP address of target SGW and target P GW, reorientates SGW and the PGW of MRN with auxiliary mark MME;

The address of the target SGW/PGW that the target MME of step 705:MRN sends according to target DeNB is the address that is built in SGW and the PGW of target DeNB with SGW and the PGW reorientation of MRN; The MME of MRN SGW in target DeNB sends and creates conversation request; The EPS beared information of the MRN that creates comprising need and the address of target P GW (being built in PGW among the target DeNB); If do not comprise the second and/or the 3rd IP address assignment supplementary in step 703 message, then target MME carries the second and/or the 3rd IP address assignment supplementary in creating conversation request message;

Step 706: target SGW creates the context of MRN, and sends the establishment conversation request message to target P GW, can comprise in this message and create the second IP address assignment supplementary and/or the 3rd IP address assignment supplementary of carrying in the conversation request message;

Step 707: target P GW built-in among the target DeNB is MRN distributing IP address according to the second IP address assignment supplementary and the 3rd IP address assignment supplementary;

MRN PGW is according to the PDN type that receives, and Dual Address Bearer Flag and carrier policy are chosen as the type of MRN IP address allocated, then according to the address style distributing IP address of selecting.If comprise subscribed PDN address in the IP address assignment supplementary that receives, then MRN PGW gives MRN with this address assignment; If Address Allocation Preference indication MRN obtains the IP address through the DHCP mode in the IP address assignment supplementary, then MRN PGW is made as particular value 0.0.0.0 with the IP address PDN Address value of MRN.

Step 708: target P GW replys establishment conversational response message to target SGW after creating the context and EPS carrying of MRN, and comprising target P GW in this message is the MRN IP address allocated;

Signaling is internal interface message among the target DeNB in step 706 and the step 708.

Step 709: target SGW replys to the MME of MRN and creates conversational response message, accomplishes with context and the EPS carrying foundation of confirming MRN, and comprising target P GW in this message is the MRN IP address allocated;

The target MME storage of step 710:MRN and the IP address of renewal MRN, and, comprise in this message that target P GW is the MRN IP address allocated to source MME transmission forwarding relocation response message;

The source MME of step 711:MRN sends switching command message to source DeNB, comprises in this message that target P GW is the MRN IP address allocated;

Step 712: target DeNB sends the RRC reconfiguration message and gives MRN, and can carry target P GW in this message is the MRN IP address allocated.

Target DeNB can also send to MRN with target P GW for the MRN IP address allocated through S1/X2 message.

MRN or target DeNB initiate the switching related procedure of MRN institute service UE then, like the path transfer request process of UE, are transferred to target DeNB place with S1 chain of command and user plane downlink path with UE.

Above-mentioned is that target DeNB creates reception second IP address assignment supplementary and the 3rd IP address assignment supplementary the conversation request message from S1 interface handoff request message and/or S11 interface that MME sends; After the built-in S-GW of target DeNB receives S11 interface establishment conversation request message; Send the S5 interface to the built-in P-GW of target DeNB and create conversation request message; The built-in P-GW of target DeNB is the method that moves via node distributing IP address receiving after the S5 interface creates conversation request message.

In addition; MME can send to target DeNB with the second IP address assignment supplementary and the 3rd IP address assignment supplementary in S1 interface handoff request message; Target DeNB is after the S1 interface handoff request message that receives the MME transmission, and the built-in P-GW of target DeNB is said mobile via node distributing IP address.

Need to prove; Above-mentioned Fig. 6 and embodiment illustrated in fig. 7; The MME that is equally applicable to MRN constant scene in handoff procedure, if MME is constant, then message transmitted can be omitted between active MME of institute and the target MME; And the behavior of source MME and target MME all is the behavior of same MME, and source MME and target MME are called the MME that moves via node.

This execution mode also provides a kind of host the base station, comprising: base station (eNB) and packet data gateway, wherein:

The base station is used to receive the first IP address assignment supplementary that the source DeNB that moves via node sends;

Packet data gateway is used for the first IP address assignment supplementary according to the base station reception, is to move via node distributing IP address.

As shown in Figure 8, another kind of host base station comprises: base station, gateway and packet data gateway, wherein:

The base station is used for receiving the second IP address assignment supplementary from the source DeNB that moves via node;

Gateway is used for receiving the 3rd IP address assignment supplementary from the MME that moves via node;

Packet data gateway is used for according to second IP address assignment supplementary of base station reception and the 3rd IP address assignment supplementary of gateway reception, is to move via node distributing IP address.

Another kind of host base station comprises: base station and packet data gateway, wherein:

The base station is used for receiving the first IP address assignment supplementary of the source DeNB of mobile via node to the MME transmission from the MME that moves via node;

Packet data gateway is used for the first IP address assignment supplementary according to the base station reception, is to move via node distributing IP address.

Another kind of host base station comprises: gateway and packet data gateway, wherein:

Gateway is used for receiving the first IP address assignment supplementary of the source DeNB of mobile via node to the MME transmission from the MME that moves via node;

Packet data gateway is used for the first IP address assignment supplementary according to the gateway reception, is to move via node distributing IP address.

Another kind of host base station comprises: base station and packet data gateway, wherein:

The base station is used for receiving the second IP address assignment supplementary of the source DeNB of mobile via node to the MME transmission from the MME that moves via node, and receives the 3rd IP address assignment supplementary that this MME sends from MME;

Packet data gateway is used for the second IP address assignment supplementary and the 3rd IP address assignment supplementary according to the base station reception, is to move via node distributing IP address.

Another kind of host base station comprises: gateway and packet data gateway, wherein:

Gateway is used for receiving the second IP address assignment supplementary of the source DeNB of mobile via node to the MME transmission from the MME that moves via node, and receives the 3rd IP address assignment supplementary that this MME sends from MME;

Packet data gateway is used for the second IP address assignment supplementary and the 3rd IP address assignment supplementary according to the gateway reception, is to move via node distributing IP address.

Another kind of host base station comprises: base station, gateway and packet data gateway, wherein:

The base station is used for receiving the second IP address assignment supplementary of the source DeNB of mobile via node to the MME transmission from the MME that moves via node;

Gateway is used for receiving the 3rd IP address assignment supplementary that this MME sends from MME;

Packet data gateway is used for according to second IP address assignment supplementary of base station reception and the 3rd IP address assignment supplementary of gateway reception, is to move via node distributing IP address.

Obviously; It is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize that they can concentrate on the single calculation element with the general calculation device; Perhaps be distributed on the network that a plurality of calculation element forms; Alternatively, they can be realized with the executable program code of calculation element, carried out by calculation element thereby can they be stored in the storage device; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.

More than this is merely the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (22)

1. address distribution method comprises:

The target host base station (DeNB) of moving via node receives the first IP address assignment supplementary of the source DeNB transmission of moving via node, according to the said first IP address assignment supplementary, is said mobile via node distributing IP address.

2. the method for claim 1 is characterized in that, the said first IP address assignment supplementary comprises: packet data network (PDN) address style, double address bearing identification, address distribution wish and signatory PDN address.

3. method as claimed in claim 2 is characterized in that, the first IP address assignment supplementary that target DeNB reception sources DeNB sends is said mobile via node distributing IP address, comprising:

The X2 interface handoff request message that said target DeNB reception sources DeNB sends is carried the said first IP address assignment supplementary in the said X2 interface handoff request message;

Said target DeNB is after receiving X2 interface handoff request message, and the built-in packet data gateway (P-GW) of target DeNB is said mobile via node distributing IP address.

4. method as claimed in claim 2 is characterized in that, the first IP address assignment supplementary that target DeNB reception sources DeNB sends is said mobile via node distributing IP address, comprising:

The X2 interface handoff request message that said target DeNB reception sources DeNB sends is carried the said first IP address assignment supplementary in the said X2 interface handoff request message;

The built-in gateway (S-GW) of said target DeNB receives the S11 interface and creates conversation request message, sends the S5 interface to the built-in P-GW of target DeNB and creates conversation request message;

The built-in P-GW of said target DeNB according to the said first IP address assignment supplementary, is said mobile via node distributing IP address receiving after the S5 interface creates conversation request message.

5. address distribution method comprises:

The target DeNB that moves via node receives the second IP address assignment supplementary from the source DeNB that moves via node; Receive the 3rd IP address assignment supplementary from the Mobility Management Entity (MME) that moves via node; According to said second IP address assignment supplementary and the 3rd IP address assignment supplementary, be said mobile via node distributing IP address.

6. method as claimed in claim 5 is characterized in that:

The said second IP address assignment supplementary comprises: the address distribution wish;

Said the 3rd IP address assignment supplementary comprises: PDN address style, double address bearing identification and signatory PDN address.

7. method as claimed in claim 6 is characterized in that, DeNB receives the second IP address assignment supplementary to target DeNB from the source, receives the 3rd IP address assignment supplementary from MME, is said mobile via node distributing IP address, comprising:

The X2 interface handoff request message that said target DeNB reception sources DeNB sends is carried the said second IP address assignment supplementary in the said X2 interface handoff request message;

The built-in S-GW of said target DeNB receives the S11 interface of the MME transmission of moving via node and creates conversation request message; Said S11 interface is created in the conversation request message and is carried said the 3rd IP address assignment supplementary, carries said the 3rd IP address assignment supplementary through S5 interface establishment conversation request message and sends to the built-in P-GW of target DeNB;

The built-in P-GW of said target DeNB according to said second IP address assignment supplementary and the 3rd IP address assignment supplementary, is said mobile via node distributing IP address receiving after the S5 interface creates conversation request message.

8. address distribution method comprises:

The target DeNB that moves via node receives the first IP address assignment supplementary of the source DeNB of mobile via node to said MME transmission from the MME that moves via node; According to the said first IP address assignment supplementary, be said mobile via node distributing IP address.

9. method as claimed in claim 8 is characterized in that:

The said first IP address assignment supplementary comprises: PDN address style, double address bearing identification, address distribution wish and signatory PDN address.

10. method as claimed in claim 9 is characterized in that, target DeNB receives the first IP address assignment supplementary from the MME that moves via node, is said mobile via node distributing IP address, comprising:

Said target DeNB receives the S1 interface handoff request message that MME sends; Carry the said first IP address assignment supplementary in the said S1 interface handoff request message, the said first IP address assignment supplementary requires message to send to said MME by source DeNB through the switching of S1 interface;

Said target DeNB is after receiving the S1 interface handoff request message of MME, and the built-in P-GW of target DeNB is said mobile via node distributing IP address.

11. method as claimed in claim 9 is characterized in that, target DeNB receives the first IP address assignment supplementary from the MME that moves via node, is said mobile via node distributing IP address, comprising:

Said target DeNB creates the said first IP address assignment supplementary of reception the conversation request message from S1 interface handoff request message or S11 interface that MME sends, and the said first IP address assignment supplementary requires message to send to said MME by source DeNB through the switching of S1 interface;

The built-in S-GW of said target DeNB receives said S11 interface and creates conversation request message; Send the S5 interface to the built-in P-GW of target DeNB and create conversation request message; Create when carrying the said first IP address assignment supplementary in the conversation request message at said S11 interface, the said first IP address assignment supplementary is carried in the said S5 interface establishment conversation request message;

The built-in P-GW of said target DeNB according to the said first IP address assignment supplementary, is said mobile via node distributing IP address receiving after the S5 interface creates conversation request message.

12. an address distribution method comprises:

The target DeNB that moves via node receives the second IP address assignment supplementary that the source DeNB that moves via node sends to said MME from the MME that moves via node; And receive the 3rd IP address assignment supplementary that this MME sends from said MME; According to said second IP address assignment supplementary and the 3rd IP address assignment supplementary, be said mobile via node distributing IP address.

13. method as claimed in claim 12 is characterized in that:

The said second IP address assignment supplementary comprises: the address distribution wish;

Said the 3rd IP address assignment supplementary comprises: PDN address style, double address bearing identification and signatory PDN address.

14. method as claimed in claim 13 is characterized in that, target DeNB receives the second IP address assignment supplementary and the 3rd IP address assignment supplementary from the MME that moves via node, is said mobile via node distributing IP address, comprising:

Said target DeNB receives the S1 interface handoff request message that MME sends, and carries said second IP address assignment supplementary and the 3rd IP address assignment supplementary in the said S1 interface handoff request message; The said second IP address assignment supplementary requires message to send to said MME by source DeNB through the switching of S1 interface;

Said target DeNB is after receiving the S1 interface handoff request message of MME, and the built-in P-GW of target DeNB is said mobile via node distributing IP address.

15. method as claimed in claim 13 is characterized in that, target DeNB receives the second IP address assignment supplementary and the 3rd IP address assignment supplementary from the MME that moves via node, is said mobile via node distributing IP address, comprising:

Said target DeNB creates said second IP address assignment supplementary of reception and the 3rd IP address assignment supplementary the conversation request message from S1 interface handoff request message and/or S11 interface that MME sends, and the said second IP address assignment supplementary sends to said MME by source DeNB through S1 interface handoff request message;

The built-in S-GW of said target DeNB receives said S11 interface and creates conversation request message; Send the S5 interface to the built-in P-GW of target DeNB and create conversation request message; When in S11 interface establishment conversation request message, carrying the second IP address assignment supplementary and/or the 3rd IP address assignment supplementary, the second IP address assignment supplementary and/or the 3rd IP address assignment supplementary are carried in the said S5 interface establishment conversation request message;

The built-in P-GW of said target DeNB according to said second IP address assignment supplementary and the 3rd IP address assignment supplementary, is said mobile via node distributing IP address receiving after the S5 interface creates conversation request message.

16. a host base station comprises: base station and packet data gateway, wherein:

Said base station is used to receive the first IP address assignment supplementary that the source DeNB that moves via node sends;

Said packet data gateway is used for the first IP address assignment supplementary according to the reception of said base station, is said mobile via node distributing IP address.

17. a host base station comprises: base station, gateway and packet data gateway, wherein:

Said base station is used for receiving the second IP address assignment supplementary from the source DeNB that moves via node;

Said gateway is used for receiving the 3rd IP address assignment supplementary from the MME that moves via node;

Said packet data gateway is used for being said mobile via node distributing IP address according to second IP address assignment supplementary of said base station reception and the 3rd IP address assignment supplementary of said gateway reception.

18. a host base station comprises: base station and packet data gateway, wherein:

Said base station is used for receiving the first IP address assignment supplementary of the source DeNB of mobile via node to said MME transmission from the MME that moves via node;

Said packet data gateway is used for the first IP address assignment supplementary according to the reception of said base station, is said mobile via node distributing IP address.

19. a host base station comprises: gateway and packet data gateway, wherein:

Said gateway is used for receiving the first IP address assignment supplementary of the source DeNB of mobile via node to said MME transmission from the MME that moves via node;

Said packet data gateway is used for the first IP address assignment supplementary according to said gateway reception, is said mobile via node distributing IP address.

20. a host base station comprises: base station and packet data gateway, wherein:

Said base station is used for receiving the second IP address assignment supplementary of the source DeNB of mobile via node to said MME transmission from the MME that moves via node, and receives the 3rd IP address assignment supplementary that this MME sends from said MME;

Said packet data gateway is used for the second IP address assignment supplementary and the 3rd IP address assignment supplementary according to the reception of said base station, is said mobile via node distributing IP address.

21. a host base station comprises: gateway and packet data gateway, wherein:

Said gateway is used for receiving the second IP address assignment supplementary of the source DeNB of mobile via node to said MME transmission from the MME that moves via node, and receives the 3rd IP address assignment supplementary that this MME sends from said MME;

Said packet data gateway is used for the second IP address assignment supplementary and the 3rd IP address assignment supplementary according to said gateway reception, is said mobile via node distributing IP address.

22. a host base station comprises: base station, gateway and packet data gateway, wherein:

Said base station is used for receiving the second IP address assignment supplementary of the source DeNB of mobile via node to said MME transmission from the MME that moves via node;

Said gateway is used for receiving the 3rd IP address assignment supplementary that this MME sends from said MME;

Said packet data gateway is used for being said mobile via node distributing IP address according to second IP address assignment supplementary of said base station reception and the 3rd IP address assignment supplementary of said gateway reception.

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