CN1897595B

CN1897595B - Method for processing dynamic IP address by wireless access technology

Info

Publication number: CN1897595B
Application number: CN2005100856130A
Authority: CN
Inventors: 吴建军
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2005-07-11
Filing date: 2005-07-11
Publication date: 2011-12-21
Anticipated expiration: 2025-07-11
Also published as: CN1897595A

Abstract

The key ideal of the invention comprises: when the client machine need to be rehired or to release its allocated dynamical IP address, through the air interface management message between the client machine and the wireless access network, the result of DHCP procedure is reported to the wireless access network; according to the result of DHCP procedure the wireless access network makes relevant process for the dynamical IP address. By the invention, even though the DHCP server is an entity in the external network, the relevant resources in the access network can be released.

Description

The method of in the wireless access technology dynamic IP addressing being handled

Technical field

The present invention relates to the communications field, relate in particular to the method for in a kind of wireless access technology dynamic IP addressing being handled.

Background technology

Along with the extensive use of the flourish and wireless network of internet service, need to support more IP mobile subscriber service.For example, thus how access network equipment supports how mobile subscriber's IP application IP addresses process, access network equipment know how IP address, the access network equipment of distributing to the mobile subscriber know that IP application IP addresses/re-rent success or not decision applying for/re-renting the action that Access Network can be taked after the failure.

DHCP (Dynamic Host ControlProtocol below in conjunction with as shown in Figure 1 WiMAX; Dynamic Host Control Protocol) structure system is the technical scheme of the example explanation prior art one relevant with the present invention.

As shown in Figure 1, in the DHCP of WiMAX structure system, comprising: MSS (DHCP client computer), BS (Base Station; The base station), ASN-GW (Access Service NetworkGateWay; Access service network gateway) and Dynamic Host Configuration Protocol server.

Wherein, described MSS is a mobile subscriber equipment, is the equal of dhcp client, mainly is that usefulness is re-rented in the application of initiation dynamic IP addressing, IP address in the DHCP network architecture.

Described BS is used to provide the L2 of BS and MSS to be connected, functions such as the compression of RRM, measurement and the power control and the data of eating dishes without rice or wine and encryption.

Described ASN-GW is used to provide the data path of MSS and external network, supports on network level that user's business is propagated, for MSS provides the Relay function of L3 information, as functions such as dhcp relay feature and RRMs.

Described Dynamic Host Configuration Protocol server is the opposite end network equipment of MSS, mainly finishes the dynamic IP addressing application, usefulness is re-rented in the IP address, and dynamic IP addressing is distributed and the IP application IP addresses/function such as re-rent/reclaim.

Still link level equipment and the Dynamic Host Configuration Protocol server that provides by wireless access network in conjunction with Fig. 1 explanation below, and based on the DHCP agreement is embodied as the distribution that the mobile subscriber finishes dynamic IP addressing, the process of renting, re-renting and discharge.

Step 1, described MSS proposes the application request of IP address by DHCP Discover broadcasting.

If client computer has a nonvolatil address of renting, it can directly ask the described address of renting.

In a single day step 2, described Dynamic Host Configuration Protocol server receive described IP request, then take out an IP address and return a DHCP Offer message with the IP available address from address pool.

Step 3, described client computer are received a plurality of Dynamic Host Configuration Protocol server IP address allocated, the described address of renting of then selecting one of them or its to ask.

Step 4, the DHCP Request message of described client computer broadcasting or clean culture identification server (Dynamic Host Configuration Protocol server of the selected IP of described client computer address correspondence) is also waited for.

Step 5, each server is checked message, if find it is not its sign, then can dropping packets.After having been received message by the server that identified, it will beam back a DHCP Ack message, if the IP address of being asked has been assigned with and has that is to say to rent and end, then can beam back DHCP Nak message.

Step 6, if described client computer is received DHCP Ack message, then it can begin to rent the IP address.If it receives DHCP Nak, then it can restart whole process.If IP has problem, client computer can send a DHCP Decline message to server and restart.

Renting of any one IP address all has one period rental period, and this is rented and must end after this, and promptly the IP address is regained by Dynamic Host Configuration Protocol server.But before the incident of renting finished, client computer can apply for re-renting, thereby Dynamic Host Configuration Protocol server continues to allow this client computer rent this IP address a period of time.Certainly also can refuse for a certain reason to re-rent.These processes are mainly directly finished with communicating by letter of server point-to-point by client computer.The process of re-renting is with top step 4, step 5 and step 6.

If described client computer need initiatively discharge the IP address, client computer clean culture DHCP Release message is given the Dynamic Host Configuration Protocol server of the selected IP of client computer address correspondence so, after described Dynamic Host Configuration Protocol server receives DHCP Release, just reclaims this IP address.

The technical scheme of the prior art two relevant with the present invention is to be embodied as the distribution that the mobile subscriber finishes dynamic IP addressing, the process of re-renting and discharging by relay agent.

Wherein being embodied as the mobile subscriber by relay agent, to finish the specific implementation process of distribution of dynamic IP addressing as follows:

Step 1, described MSS proposes the application request of distributing IP address by DHCP Discover broadcasting.

Step 2, the IP address that relay agent will be corresponding with the interface of receiving message is put in the giaddr territory of message, and monocular is broadcast to Dynamic Host Configuration Protocol server then.

Step 3, described Dynamic Host Configuration Protocol server is broadcasted to relay agent's echo reply by monocular.Reply and comprise the identical giaddr territory of asking with client computer.

Step 4, described relay agent broadcasts from the interface of the correspondence of IP address described in the giaddr territory and replys.

Step 5, described client computer obtain the IP address of being applied for according to replying of described relay agent broadcasting.

Wherein, finish re-renting of IP address by relay agent and when discharging, what adopt is mode of unicast, similar when its specific implementation process and above-mentioned realization distributing IP address, is not described in detail between client-server.

By the technical scheme of above-mentioned prior art one and prior art two as can be seen, there is following defective in it:

1, need make full use of the process that existing Internet Protocol is supported the distribution of dynamic IP addressing/re-rent/discharge at the characteristic of Access Network again.

Access Network is different from general internet, and access network equipment can not be controlled the mobile subscriber according to the service scenario of client computer and registration scenarios and select the customization server IP address allocated as early as possible.When the user inserts different business networks by access network equipment, because the Dynamic Host Configuration Protocol server in the different business network may be different, and described Dynamic Host Configuration Protocol server institute can an IP address allocated pond also may be different, so access network equipment can not be controlled the mobile subscriber according to the service scenario of client computer and registration scenarios and selects the customization server IP address allocated.At this moment, need in the business network that subscription authentication or the clear and definite user of authorization of service will insert, determine to select for use which Dynamic Host Configuration Protocol server.Therefore, prior art need make full use of the process that existing Internet Protocol is supported the distribution of dynamic IP addressing/re-rent/discharge at the characteristic of Access Network again.

2, when Dynamic Host Configuration Protocol server is the entity of outer net, access network equipment can not in time obtain the state of the IP address assignment of client computer/re-rent/discharge, thereby can not in time discharge the respective resources in the access network equipment, causes the waste of access network resource.And access network equipment can not in time end the user service of access network equipment, causes the user to use the error statistics of access network resource.

The technical scheme of prior art three related to the present invention is: by the DHCP client computer (acting on behalf of MSS) oneself of network side, perhaps (for example: signaling) the DHCP client computer (acting on behalf of MSS) of informing network side is initiated dhcp process by other forms by MSS, with the application of the IP address of finishing client computer (MSS), re-rent, dhcp process such as release, all processes are fully transparent for client computer (MSS), only need be with the result of IP application IP addresses, the process re-renting, discharge by other form (for example: signaling) notice MSS.

By the technical scheme of above-mentioned prior art two as can be seen, there is following defective in it:

The dhcp process of prior art three is almost completely transparent for MSS (DHCP client computer), can't allow MSS and Dynamic Host Configuration Protocol server directly communicate, it need rely on MSS and earlier set up signaling with the control network element (MSS agency) of network side and be connected, therefore the process of just can finish the signaling transmission, analyzing, explain and handle needs to increase network signal.

Summary of the invention

In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide the method for in a kind of wireless access technology dynamic IP addressing being handled, by the present invention, solved and to have made full use of the problem that existing Internet Protocol is supported the process of the distribution of dynamic IP addressing/re-rent/discharge in the prior art at the characteristic of Access Network again; Solved in the prior art when Dynamic Host Configuration Protocol server is outer network entity, can not in time discharge the respective resources in the access network equipment, cause the problem of the waste of access network resource, and the user's service that can not in time end access network equipment, cause the user to use the problem of the error statistics of access network resource; By the present invention, solved and to allow MSS and Dynamic Host Configuration Protocol server directly communicate in the prior art, and caused needs to increase the problem of network signal.

The objective of the invention is to be achieved through the following technical solutions:

The method of in a kind of wireless access technology provided by the invention dynamic IP addressing being handled comprises:

A, when client computer need be re-rented or discharge the dynamic IP addressing of being distributed, described client computer is by the chain of command message of eating dishes without rice or wine of itself and described wireless access network, and the result of Dynamic Host Control Protocol dhcp process is reported to described wireless access network;

B, described wireless access network handle the dynamic IP addressing of being distributed accordingly according to the result of described dhcp process;

Wherein, the dynamic IP addressing of being distributed being carried out respective handling comprises:

Described wireless access network is according to the result of described dhcp process, the resource relevant with the dynamic IP addressing of being distributed distributed, discharged and/or charge stop.

Wherein, described steps A specifically comprises:

A1, when client computer need be re-rented or discharge the dynamic IP addressing of being distributed, described client computer is by the chain of command message of eating dishes without rice or wine of itself and described wireless access network, and the result of dhcp process is reported to base station in the described wireless access network;

A2, described base station be by the interface between the ASN-GW gateway of described base station and described wireless access network, by the signaling of Access Network internal interface or the message result with described dhcp process, sends the ASN-GW gateway of described wireless access network to.

Wherein, described steps A 1 specifically comprises:

A11, when client computer need be re-rented the dynamic IP addressing of being distributed, described client computer proposes to re-rent request by unicast messages;

The network element of A12, described wireless access network passes through Dynamic Host Configuration Protocol server with the described request message of re-renting;

A13, described Dynamic Host Configuration Protocol server make and allow to re-rent response or stop to re-rent response according to the described request message of re-renting, and by unicast messages described response message are passed through the corresponding client machine by the network element of wireless access network;

A14, described client computer are handled the apply for dynamic IP addressing of re-renting according to described response message, allow the response message that continues to rent if it receives, and then continue to rent the dynamic IP addressing of being distributed; If described client computer receives the described response message that continues to rent of stopping, then, report to the base station in the described wireless access network with the result of this dhcp process the administrative messag of eating dishes without rice or wine by the base station of itself and described wireless access network;

Or,

A15, when client computer needs initiatively to discharge the dynamic IP addressing of being distributed, described client computer proposes the release request by unicast messages, and by the network element of described wireless access network described release request message is passed through Dynamic Host Configuration Protocol server;

A16, described client computer be by the administrative messag of eating dishes without rice or wine between itself and described wireless access network, and the result of dhcp process is reported to base station in the described wireless access network.

Wherein, described steps A 12 specifically comprises:

The described request message of re-renting is broadcasted in the base station of A121, described wireless access network, passes through the ASN-GW gateway of described wireless access network by unicast messages;

A122, described ASN-GW gateway pass through each Dynamic Host Configuration Protocol server by unicast messages with the described request of re-renting;

Or,

The bearer path of this client computer is set up in the base station of A123, described wireless access network between base station and ASN-GW gateway, by described bearer path list to singly re-renting the ASN-GW gateway that request message is passed to described wireless access network with described;

A124, described ASN-GW gateway pass through each Dynamic Host Configuration Protocol server by broadcast with the described request message of re-renting;

Or,

The base station of A125, described wireless access network passes through each Dynamic Host Configuration Protocol server with the described request message of re-renting;

Wherein, described steps A 13 specifically comprises:

A131, described Dynamic Host Configuration Protocol server make and allow to re-rent response or stop to re-rent response according to the described request message of re-renting, and by unicast messages described response message are passed through corresponding base station by the ASN-GW gateway of wireless access network;

A132, described base station by and client computer between air interface described unicast response message is passed through the corresponding client machine;

Or,

A133, described Dynamic Host Configuration Protocol server make and allow to re-rent response or stop to re-rent response according to the described request message of re-renting, and described response message are sent to the ASN-GW gateway of wireless access network by unicast messages;

The ASN-GW gateway of A134, described wireless access network is set up the bearer path of this client computer between ASN-GW gateway and base station, described response message is passed on list ground the base station of described wireless access network by described bearer path list;

A135, described base station by and client computer between air interface described unicast response message is passed through the corresponding client machine;

Or,

A136, described Dynamic Host Configuration Protocol server make and allow to re-rent response or stop to re-rent response according to the described request message of re-renting, after this clean culture corresponding message is received in the base station of wireless access network correspondence, described unicast response message is passed through the corresponding client machine by the air interface between itself and the client computer;

Wherein, described steps A 15 specifically comprises:

A151, when client computer needs initiatively to discharge the dynamic IP addressing of being distributed, described client computer proposes the release request by unicast messages, and the base station that sends described wireless access network to passes through corresponding ASN-GW gateway;

A152, described ASN-GW gateway pass through Dynamic Host Configuration Protocol server by unicast messages with described response message;

Or,

A153, when client computer needs initiatively to discharge the dynamic IP addressing of being distributed, described client computer proposes the release request by unicast messages, and sends the base station of described wireless access network to;

A154, described base station set up the bearer path of this client computer between itself and ASN-GW gateway, by described bearer path list to singlely described response message being passed to the ASN-GW gateway of described wireless access network;

A155, described ASN-GW gateway pass through Dynamic Host Configuration Protocol server by unicast messages with described response message;

Or,

A156, when client computer needs initiatively to discharge the dynamic IP addressing of being distributed, described client computer proposes the release request by unicast messages, and passes through Dynamic Host Configuration Protocol server by the base station of described wireless access network by unicast messages.

Wherein, before described steps A, described method also comprises:

C1, when client computer files an application to distribute the request of dynamic IP addressing by broadcasting, the network element transparent transmission described request by wireless access network is given described Dynamic Host Configuration Protocol server, is embodied as the distribution that client computer is carried out dynamic IP addressing;

Or,

C2, when client computer files an application to distribute the request of dynamic IP addressing by broadcasting, ASN-GW gateway interception by wireless access network, analyze and transmit dhcp broadcast message between described client computer and described Dynamic Host Configuration Protocol server, be embodied as the distribution that client computer is carried out dynamic IP addressing according to analysis result.

Wherein, described step C1 specifically comprises:

C11, when client computer files an application to distribute the request of dynamic IP addressing by broadcasting, the network element by described wireless access network passes through each Dynamic Host Configuration Protocol server with described IP request;

C12, when each Dynamic Host Configuration Protocol server after request is handled according to described IP, the network element by described wireless access network will be with the message transmission of IP available address to described client computer;

C13, described client computer select an IP address according to described message with the IP available address, and include the DHCP request message of selected IP address by transmission, to obtain the response of corresponding Dynamic Host Configuration Protocol server, realize the distribution of dynamic IP addressing.

Wherein, described step C11 specifically comprises:

C111, when client computer files an application to distribute the request of dynamic IP addressing by broadcasting, described IP request is broadcasted in the base station by described wireless access network, passes through the ASN-GW gateway of described wireless access network by broadcast;

C112, described ASN-GW gateway pass through each Dynamic Host Configuration Protocol server by broadcast with described IP request;

Or,

C113, when client computer files an application to distribute the request of dynamic IP addressing by broadcasting, between base station and ASN-GW gateway, set up the bearer path of this client computer, DHCP Ack broadcast is passed on list ground the ASN-GW gateway of described wireless access network by described bearer path list;

C114, described ASN-GW gateway pass through each Dynamic Host Configuration Protocol server by broadcast with described IP request;

Or,

C115, when client computer files an application to distribute the request of dynamic IP addressing by broadcasting, the base station by described wireless access network passes through each Dynamic Host Configuration Protocol server with described IP request.

Wherein, described step C12 specifically comprises:

C121, after described Dynamic Host Configuration Protocol server receives described IP request, then from address pool, take out an IP address;

C122, return a message with the IP available address, broadcast by the ASN-GW gateway of described wireless access network then, pass through the base station by broadcast according to described IP address;

C123, described base station by and client computer between air interface described broadcasting packet is passed through described client computer;

Or,

C124, after described Dynamic Host Configuration Protocol server receives described IP request, then from address pool, take out an IP address;

C125, return a message with the IP available address according to described IP address, then by between ASN-GW gateway and base station, setting up the bearer path of this client computer, by described bearer path list to singlely giving the base station with described message transmission;

C126, described base station by and client computer between air interface give described client computer with described message transmission;

Or,

C127, after described Dynamic Host Configuration Protocol server receives described IP request, then from address pool, take out an IP address;

C128, return a message with the IP available address according to described IP address, base station and the air interface between the client computer by described wireless access network passes through described client computer then.

Wherein, described step C13 specifically comprises:

C131, described client computer select the IP address according to the message of the IP available address of a plurality of Dynamic Host Configuration Protocol server that receive, and the DHCP request message that will include selected IP address broadcasts, and prison is received message or signaling then;

The network element of C132, wireless access network passes through each Dynamic Host Configuration Protocol server with the DHCP request message of described broadcasting;

C133, each Dynamic Host Configuration Protocol server are checked described DHCP request message, if find that the sign of described message is inconsistent with the sign of oneself, then abandon described message; Otherwise, judge that according to described message whether the IP address of being asked has been assigned with, if be assigned with, then beams back the IP address assignment failed message, and by the network element of described wireless access network described IP address assignment failed message is passed through described client computer; If also be not assigned with, then beam back the IP address assignment success message, and described IP address assignment success message is passed through described client computer by the network element of described wireless access network;

When if the described client computer prison of C134 is received the IP address assignment success message, then begin to rent described IP address, and send IP address assignment messages to described base station by the chain of command message of eating dishes without rice or wine between the base station in described client computer and the described wireless access network, by signaling or the message of described base station, described IP address assignment messages is sent to the ASN-GW gateway of described wireless access network by the Access Network internal interface;

If receiving, described client computer prison then re-executes step C1 by the IP address assignment failed message; There is problem the address if described client computer is found described IP, then sends DHCP refuse information message to described Dynamic Host Configuration Protocol server, re-executes step C1 then.

Wherein, described step C132 specifically comprises:

Described DHCP request message is broadcasted in the base station of C1321, wireless access network, passes through the ASN-GW gateway of described wireless access network by broadcast;

C1322, described ASN-GW gateway pass through each Dynamic Host Configuration Protocol server by broadcast with described DHCP request message;

Or,

The bearer path of this client computer is set up in the base station of C1323, wireless access network between base station and ASN-GW gateway, list ground is passed through described DHCP request message the ASN-GW gateway of described wireless access network by described bearer path list;

C1324, described ASN-GW gateway pass through each Dynamic Host Configuration Protocol server by broadcast with described DHCP request message;

Or,

Described DHCP request message is broadcasted in the base station of C1325, wireless access network, passes through each Dynamic Host Configuration Protocol server by broadcast;

Wherein, the network element by described wireless access network specifically comprises the process that described IP address assignment failed message passes through described client computer described in the step C133:

The ASN-GW gateway of C1331, wireless access network is broadcasted the IP address assignment failed message of described this client computer, passes through the base station of described wireless access network by broadcast;

C1332, described base station by and client computer between air interface give described client computer with the broadcast message transmission of described IP address assignment failure;

Or,

The ASN-GW gateway of C1333, wireless access network is set up the bearer path of this client computer between ASN-GW gateway and base station, list ground is passed through described IP address assignment failed message the base station of described wireless access network by described bearer path list;

C1334, described base station by and client computer between air interface described IP address assignment failed message is passed through described client computer;

Or,

The base station of C1335, wireless access network receives the broadcast of described IP address assignment failure, by and client computer between air interface give described client computer with the broadcast message transmission of described IP address assignment failure;

Wherein, the network element by described wireless access network specifically comprises the process that described IP address assignment success message passes through described client computer described in the step C133:

The ASN-GW gateway of C1336, wireless access network is broadcasted described IP address assignment success message, passes through the base station of described wireless access network by broadcast;

C1337, described base station by and client computer between air interface give described client computer with the broadcast message transmission of described IP address assignment success;

Or,

The ASN-GW gateway of C1338, wireless access network is set up the bearer path of this client computer between ASN-GW gateway and base station, list ground is passed through described IP address assignment success message the base station of described wireless access network by described bearer path list;

C1339, described base station by and client computer between air interface give described client computer with the broadcast message transmission of described IP address assignment success;

Or,

The base station of C1340, wireless access network receives the broadcast of described IP address assignment success, by and client computer between air interface give described client computer with the broadcast message transmission of described IP address assignment success.

Wherein, described step C2 specifically comprises:

C21, when client computer files an application to distribute the request of dynamic IP addressing by broadcasting, the ASN-GW gateway of described wireless access network is tackled described IP request, through the information after the described interception is analyzed, sends to each Dynamic Host Configuration Protocol server then;

C22, from address pool, take out an IP address according to described IP request when each Dynamic Host Configuration Protocol server, and return a message with the IP available address according to described IP address;

The described message of the ASN-GW gateway of C23, described wireless access network interception with the IP available address, by analysis after, send to described client computer;

C24, described client computer select an IP address according to described message with the IP available address, and include the DHCP request message of selected IP address by transmission, to obtain the response of corresponding Dynamic Host Configuration Protocol server, realize the distribution of dynamic IP addressing.

Wherein, described step C21 specifically comprises:

The ASN-GW gateway that the base station of described wireless access network passes through described broadcast the corresponding wireless access network in this base station by the tunnel set up between base station and the ASN-GW or Data-carrying;

The described message of described ASN-GW gateway interception with the IP available address, by analysis after, send to described Dynamic Host Configuration Protocol server;

Wherein, described step C23 specifically comprises:

The described message of described ASN-GW gateway interception with the IP available address, by analysis after, by the tunnel or the Data-carrying of setting up between base station and the ASN-GW described broadcast is passed through this base station;

Described base station by and client computer between air interface described broadcasting packet message with the IP available address is passed through described client computer;

Wherein, described step C24 specifically comprises:

C241, described client computer select the IP address according to the message of the IP available address of a plurality of Dynamic Host Configuration Protocol server that receive, and the DHCP request message that will include selected IP address broadcasts, and prison is received message or signaling then;

The ASN-GW gateway of C242, described wireless access network is tackled the DHCP request message of described broadcasting, sends each Dynamic Host Configuration Protocol server to after by analysis;

C243, each Dynamic Host Configuration Protocol server are checked described DHCP request message, if the sign of the sign of the described message of discovery and book server is inconsistent, then abandon described message; Otherwise, judge according to described message whether the IP address of being asked has been assigned with, if be assigned with, then beam back the response message of IP address assignment failure by broadcasting; If also be not assigned with, then beam back IP address assignment success response message by broadcasting;

The ASN-GW gateway of C244, described wireless access network is tackled the response message that described Dynamic Host Configuration Protocol server returns, and it is analyzed, then based on the distribution of analysis result realization to the client computer dynamic IP addressing.

Wherein, described step C242 specifically comprises:

The ASN-GW gateway that the base station of C2421, wireless access network sends to described DHCP request message the corresponding wireless access network in this base station by the tunnel set up between base station and the ASN-GW or Data-carrying;

The ASN-GW gateway of C2422, described wireless access network is tackled the DHCP request message of described broadcasting, by analysis after, send described message to each Dynamic Host Configuration Protocol server;

Wherein, described step C244 specifically comprises:

The ASN-GW gateway of described wireless access network is tackled the response message that described Dynamic Host Configuration Protocol server returns, and it is analyzed, if analysis result is the response message of IP address assignment success, then described ASN-GW passes through this base station by the tunnel set up between base station and the ASN-GW or Data-carrying with the broadcast of described IP address assignment success, described then base station by and client computer between air interface the broadcast of described IP address assignment success is passed through described client computer, and the IP address and the sign of client computer are carried out related, the IP carrying of setting up described client computer simultaneously;

If analysis result is the response message of IP address assignment failure, then described ASN-GW passes through this base station by the tunnel set up between base station and the ASN-GW or Data-carrying with the broadcast of described IP address assignment failure, described then base station by and client computer between air interface the broadcast of described IP address assignment failure is passed through described client computer.

A kind of method that reports the dhcp process result comprises:

When client computer need be re-rented or discharge the dynamic IP addressing of being distributed, described client computer is by the chain of command message of eating dishes without rice or wine of itself and described wireless access network, the result of Dynamic Host Control Protocol dhcp process is reported to described wireless access network, so that described wireless access network is according to the result of described dhcp process, the resource relevant with the dynamic IP addressing of being distributed distributed, discharge and/or charge stops.

This method specifically comprises:

When client computer need be re-rented the dynamic IP addressing of being distributed, described client computer proposed the request of re-renting by unicast messages; Client computer is re-rented response or is stopped to re-rent response message according to allowing of receiving the apply for dynamic IP addressing of re-renting is handled, and allows the response message that continues to rent if it receives, and then continues to rent the dynamic IP addressing of being distributed; If described client computer receives the described response message that continues to rent of stopping, then, report to the base station in the described wireless access network with the result of this dhcp process the administrative messag of eating dishes without rice or wine by the base station of itself and described wireless access network;

Or,

When client computer needed initiatively to discharge the dynamic IP addressing of being distributed, described client computer proposed the release request by unicast messages, and by the network element of described wireless access network described release request message was passed through Dynamic Host Configuration Protocol server; Client computer is by the administrative messag of eating dishes without rice or wine between itself and described wireless access network, and the result of dhcp process is reported to base station in the described wireless access network.

As seen from the above technical solution provided by the invention, when client computer need be re-rented or discharge the dynamic IP addressing of being distributed, client computer of the present invention is by the administrative messag of eating dishes without rice or wine between itself and described wireless access network, and the result of dhcp process is reported to described wireless access network; Described wireless access network is according to the result of described dhcp process, the dynamic IP addressing of being distributed is handled accordingly, therefore, by the present invention, can be only just can support the problem of the process of the distribution of dynamic IP addressing/re-rent/discharge at the characteristic of Access Network; By the present invention, even when Dynamic Host Configuration Protocol server is outer network entity, also can in time discharge the respective resources in the access network equipment, avoided the waste of access network resource, and can in time end the user service of access network equipment, avoided the user to use the error statistics of access network resource; By the present invention, can allow MSS and Dynamic Host Configuration Protocol server directly communicate, and need not to increase network signal.

Description of drawings

Fig. 1 is the DHCP structure system figure in the WiMAX system in the prior art;

The flow chart that Fig. 2 is embodied as MSS distributing IP address for network element transparent transmission MSS and the broadcast between Dynamic Host Configuration Protocol server by wireless access network among the present invention;

Fig. 3 initiatively discharges the flow chart of IP address for MSS described in the present invention;

Fig. 4 tackles, analyzes the broadcast between MSS and Dynamic Host Configuration Protocol server for the network element by wireless access network among the present invention, and takes corresponding processing according to analysis result, is embodied as the flow chart of MSS distributing IP address.

Embodiment

The method of in a kind of wireless access technology of the present invention dynamic IP addressing being handled, its core is: when client computer need be re-rented or discharge the dynamic IP addressing of being distributed, described client computer is by the administrative messag of eating dishes without rice or wine between itself and described wireless access network, and the result of Dynamic Host Control Protocol dhcp process is reported to described wireless access network; Described wireless access network is handled the dynamic IP addressing of being distributed accordingly according to the result of described dhcp process.

Below in conjunction with Fig. 2 and Fig. 3 first embodiment provided by the invention is described.

As shown in Figure 2, be the process that network element transparent transmission MSS and the broadcast between Dynamic Host Configuration Protocol server by wireless access network are embodied as MSS distributing IP address, it comprises:

Step 11, MSS (client computer) will file an application to distribute the DHCP Discover broadcast of dynamic IP addressing request to send to the BS of wireless access network according to the form of the data flow of eating dishes without rice or wine.

The BS of step 12, described wireless access network passes through described request the ASN-GW gateway of this BS correspondence by the broadcast of DHCP Discover.

In step 12, comprise two kinds of situations, one is: described BS sets up bearer path between BS and ASN-GW gateway, described DHCP Discover request message broadcast is passed on list ground the ASN-GW gateway of described wireless access network by described bearer path list; It two is: described BS broadcasts described DHCP Discover request message, passes through the ASN-GW gateway of described wireless access network by broadcast.

Step 13, described ASN-GW gateway are given each Dynamic Host Configuration Protocol server by the broadcast of DHCP Discover with described IP request forwarding/route.

Step 14, after described Dynamic Host Configuration Protocol server receives described IP request, then from address pool, take out an IP address; Return a DHCP Offer message according to described IP address, by broadcast described DHCP Offer message is sent then with the IP available address.

The ASN-GW gateway of step 15, described wireless access network carries out transparent transmission with described DHCP Offer broadcast.

Comprise two kinds of situations in step 15, one is: described ASN-GW sets up bearer path between BS and ASN-GW gateway, described DHCP Offer broadcast is passed on list ground the BS of described wireless access network by described bearer path list; It two is: described ASN-GW broadcasts described DHCP Offer message, passes through the BS of described wireless access network by broadcast.

The DHCP Offer message of described this MSS that step 16, described BS will receive passes through described MSS according to the form of the data flow of eating dishes without rice or wine.

Step 17, described MSS select suitable IP address according to the DHCP Offer message of the IP available address of a plurality of Dynamic Host Configuration Protocol server that receive, and sending to the BS of described wireless access network according to the DHCP Request request broadcast message that the form of the data flow of eating dishes without rice or wine will include selected IP address, prison is received message or signaling then;

Step 18, described BS pass through described DHCP Request request message the ASN-GW gateway of corresponding wireless access network.

In step 18, comprise two kinds of situations, one is: described BS sets up bearer path between BS and ASN-GW gateway, described DHCP Request request message broadcast is passed on list ground the ASN-GW gateway of described wireless access network by described bearer path list; It two is: described BS broadcasts described DHCPRequest request message, passes through the ASN-GW gateway of described wireless access network by broadcast.

Step 19, described ASN-GW gateway pass through each Dynamic Host Configuration Protocol server by broadcast with described DHCP Request request message.

Step 20, each Dynamic Host Configuration Protocol server are checked described DHCP Request request message.

If find that the sign of described message is inconsistent with the sign of oneself, then abandon described message;

If find that the sign of described message is consistent with the sign of oneself, then judge according to described message whether the IP address of being asked is assigned with.

If be assigned with, then beam back the IP address assignment failed message, and described IP address assignment failed message is passed through described client computer by the network element of described wireless access network;

If also be not assigned with, then beam back DHCP Ack (IP address assignment success) message, and described DHCP Ack message is sent by broadcast.

Step 21, described ASN-GW gateway pass through described DHCP Ack message the BS of described wireless access network.

Comprise two kinds of situations in step 21, one is: described ASN-GW gateway is set up bearer path between ASN-GW and BS, described DHCP Ack broadcast is passed on list ground the BS of described wireless access network by described bearer path list; It two is: described ASN-GW gateway is broadcasted described DHCP Ack message, passes through the BS of described wireless access network by broadcast.

The described DHCP Ack message packet that step 22, described BS will receive according to the data stream format of eating dishes without rice or wine, passes through corresponding MSS.

When if the described MSS of step 23 prison is received described DHCP Ack message, then begin to rent described IP address, and send IPAddress Allocated (IP distributes the address) message to described BS by the chain of command message of eating dishes without rice or wine between BS in MSS and the described wireless access network, last execution in step 24, promptly described BS sends described IP Address Allocated message to described ASN-GW gateway by the signaling or the message of Access Network internal interface.

After described ASN-GW gateway receives described IP Address Allocated message,, the dynamic IP addressing of being distributed is carried out resource management and/or charging according to the result of described dhcp process.

If receiving, described MSS prison then re-executes above-mentioned steps by the IP address assignment failed message; There is problem the address if described client computer is found described IP, then sends DHCP Decline (DHCP refuse information) message and gives described Dynamic Host Configuration Protocol server, re-executes above-mentioned steps then.

When being the lease expiration of MSS IP address allocated, this IP address just must be regained by Dynamic Host Configuration Protocol server when above-mentioned.But before the incident of renting finished, MSS can apply for re-renting, thereby Dynamic Host Configuration Protocol server continues to allow this client computer rent this IP address a period of time.Certainly also can refuse for a certain reason to re-rent.These processes are mainly directly finished with communicating by letter of Dynamic Host Configuration Protocol server point-to-point by MSS.

Below to realizing that the process that MSS re-rents the IP address is described in detail.

The unicast messages that step 101, MSS will be re-rented the IP Address requests according to the form of the data flow of eating dishes without rice or wine sends to the BS of wireless access network.

The described unitcast request message of the network element of step 102, described wireless access network (BS and ASN-GW gateway) transparent transmission.

Comprise two kinds of situations.

One is: the described request message of re-renting is broadcasted in the base station of described wireless access network, passes through the ASN-GW gateway of described wireless access network by unicast messages; Described ASN-GW gateway passes through each Dynamic Host Configuration Protocol server by unicast messages with the described request of re-renting;

It two is: bearer path is set up in the base station of described wireless access network between BS and ASN-GW gateway, by described bearer path list to singly re-renting the ASN-GW gateway that request message is passed to described wireless access network with described; Described ASN-GW gateway passes through each Dynamic Host Configuration Protocol server by broadcast with the described request message of re-renting.

Step 103, Dynamic Host Configuration Protocol server receive described request, make according to described request and to allow the response message re-renting or refuse to re-rent, and sending described response message to the corresponding client machine according to the mode of unicast messages, the network element of wireless access network (ASN-GW gateway and BS) is with the described message of transparent transmission therebetween.

The process of wherein passing through network element (ASN-GW gateway and BS) the described message of transparent transmission of wireless access network comprises two kinds of situations:

One is: described Dynamic Host Configuration Protocol server is made and is allowed to re-rent response or stop to re-rent response according to the described request message of re-renting, and by unicast messages described response message is passed through corresponding base station by the ASN-GW gateway of wireless access network; The described DHCP Ack unicast messages message that described base station will receive according to the data stream format of eating dishes without rice or wine, passes through corresponding MSS;

It two is: described Dynamic Host Configuration Protocol server is made and is allowed to re-rent response or stop to re-rent response according to the described request message of re-renting, and described response message is sent to the ASN-GW gateway of wireless access network by unicast messages; The ASN-GW gateway of described wireless access network is set up bearer path between ASN-GW gateway and base station, described response message is passed on list ground the base station of described wireless access network by described bearer path list.The described DHCP Ack unicast messages message that described base station will receive according to the data stream format of eating dishes without rice or wine, passes through corresponding MSS.

Step 104, described client computer are handled the apply for dynamic IP addressing of re-renting according to described response message, allow the response message re-rented if it receives, and then continue to rent the dynamic IP addressing of being distributed;

If described client computer receives the described response message that stops to re-rent,, the result of this dhcp process is reported to base station in the described wireless access network then by the chain of command message of eating dishes without rice or wine between BS in itself and the described wireless access network; Signaling or message by the Access Network internal interface reports to corresponding ASN-GW gateway by BS then.

Step 105, described ASN-GW gateway stop to re-rent the result according to described dhcp process, and the dynamic IP addressing of being distributed is carried out resource allocation, discharges and/or stop operations such as charging.

If described MSS need initiatively discharge the IP address, so described MSS clean culture DHCP Release (DHCP release) message is given the Dynamic Host Configuration Protocol server of the selected IP of client computer address correspondence, after described Dynamic Host Configuration Protocol server receives DHCP Release, just reclaim this IP address.Its implementation procedure comprises as shown in Figure 3:

Step 31, described MSS propose DHCP Release (DHCP release) request, clean culture DHCP Release message are sent to the BS of described wireless access network according to the form of the data flow of eating dishes without rice or wine.

Step 32, described BS pass through corresponding ASN-GW gateway by unicast messages with described DHCP Release request message.

Comprise two kinds of situations.

One is: this message of base station transparent transmission of described wireless access network is given corresponding ASN-GW gateway; Described ASN-GW gateway passes through Dynamic Host Configuration Protocol server by unicast messages with described response message;

Or,

It two is: bearer path is set up in described base station between itself and ASN-GW gateway, by described bearer path list to singlely described response message being passed to the ASN-GW gateway of described wireless access network; Described ASN-GW gateway passes through Dynamic Host Configuration Protocol server by unicast messages with described response message.

Step 33, described ASN-GW gateway are given Dynamic Host Configuration Protocol server by unicast messages with described DHCP Release request forwarding/route.

In the time of described MSS execution in step 31, execution in step 34, promptly IP Address Release (release of IP address) message is sent to described BS by the chain of command message of eating dishes without rice or wine between MSS and described BS, execution in step 35 then, promptly signaling or the message by the Access Network internal interface sends to corresponding ASN-GE network element with IP AddressRelease message, notifies described ASN-GE network element that the dynamic IP addressing of being distributed is carried out resource allocation, discharges and/or stop operations such as charging.

Second embodiment provided by the invention, different with first embodiment is, in described second embodiment, by wireless access network during with the dhcp broadcast message transparent transmission between described MSS and Dynamic Host Configuration Protocol server, only pass through the BS transparent transmission, and not by ASN-GW gateway transparent transmission.The specific implementation step comprises:

Step 111, MSS (client computer) will file an application to distribute the DHCP Discover broadcast of dynamic IP addressing request to send to the BS of wireless access network according to the form of the data flow of eating dishes without rice or wine.

The BS of step 112, described wireless access network passes through each Dynamic Host Configuration Protocol server with described IP request DHCP Discover broadcast.

Step 113, after described Dynamic Host Configuration Protocol server receives described IP request, then from address pool, take out an IP address; Return a DHCP Offer message according to described IP address, then by the described DHCP Offer of broadcast loopback message with the IP available address.

Step 114, described BS will receive the DHCPOffer message of described this MSS that sends from Dynamic Host Configuration Protocol server, pass through MSS according to the form of the data flow of eating dishes without rice or wine.

Step 115, described MSS select suitable IP address according to the DHCP Offer message of the IP available address of a plurality of Dynamic Host Configuration Protocol server that receive, and sending to the BS of described wireless access network according to the DHCP Request request broadcast message that the form of the data flow of eating dishes without rice or wine will include selected IP address, prison is received message or signaling then.

Step 116, described BS pass through each Dynamic Host Configuration Protocol server by broadcast with described DHCP Request request message.

Step 117, each Dynamic Host Configuration Protocol server are checked described DHCP Request request message.

If be assigned with, then beam back DHCP Nak (IP address assignment failure) message, and described IP address assignment failed message is passed through described client computer by the network element of described wireless access network;

If also be not assigned with, then beam back DHCP Ack (IP address assignment success) message, and described DHCP Ack message is sent by broadcast, execution in step 118 then.

The described DHCP Ack message from described Dynamic Host Configuration Protocol server transmission that step 118, described BS will receive according to the data stream format of eating dishes without rice or wine, passes through MSS.

When if the described MSS of step 119 prison is received described DHCP Ack message, then begin to rent described IP address, and send IPAddress Allocated (IP distributes the address) message to described BS by the chain of command message of eating dishes without rice or wine between BS in MSS and the described wireless access network, last execution in step 120, promptly described BS sends described IP AddressAllocated message to described ASN-GW gateway by the signaling or the message of Access Network internal interface.

After described ASN-GW gateway receives described IP Address Allocated message,, the dynamic IP addressing of being distributed is carried out the management and/or the charging of resource according to the result of described dhcp process.

If receiving, described MSS prison then re-executes above-mentioned steps by the IP address assignment failed message; There is problem the address if described client computer is found described IP, then sends DHCP Decline message to described Dynamic Host Configuration Protocol server, re-executes above-mentioned steps then.

The unicast messages that step 201, MSS will be re-rented the IP Address requests according to the form of the data flow of eating dishes without rice or wine sends to the BS of wireless access network.

The described unitcast request message of the BS transparent transmission of step 202, described wireless access network.

Step 203, Dynamic Host Configuration Protocol server receive described request message, make according to described request message then and allow the response message re-renting or refuse to re-rent, and described response message is sent to the BS of corresponding wireless access network according to the mode of unicast messages, the described DHCP Ack unicast messages message that described base station will receive, according to the data stream format of eating dishes without rice or wine, pass through corresponding MSS.

Step 204, described client computer are handled the apply for dynamic IP addressing of re-renting according to described response message, allow the response message re-rented if it receives, and then continue to rent the dynamic IP addressing of being distributed;

Step 205, described ASN-GW gateway stop to re-rent the result according to described dhcp process, and the dynamic IP addressing of being distributed is carried out resource allocation, discharges and/or stop operations such as charging.

If described MSS need initiatively discharge the IP address, so described MSS clean culture DHCP Release (DHCP release) message is given the Dynamic Host Configuration Protocol server of the selected IP of client computer address correspondence, after described Dynamic Host Configuration Protocol server receives DHCP Release, just reclaim this IP address.Its implementation procedure comprises:

Step 231, described MSS propose DHCP Release (DHCP release) request, clean culture DHCP Release message are sent to the BS of described wireless access network according to the form of the data flow of eating dishes without rice or wine.

Step 232, described BS pass through Dynamic Host Configuration Protocol server by unicast messages with described DHCP Request request message.

In the time of described MSS execution in step 231, execution in step 233, promptly IP Address Release (release of IP address) message is sent to described BS by the chain of command message of eating dishes without rice or wine between MSS and described BS, execution in step 234 then, promptly signaling or the message by the Access Network internal interface sends to corresponding ASN-GW gateway with IP AddressRelease message, notifies described ASN-GE network element that the dynamic IP addressing of being distributed is carried out resource allocation, discharges and/or stop operations such as charging.

Below in conjunction with Fig. 4 and Fig. 3 the 3rd embodiment provided by the invention is described.

As shown in Figure 4, be by the broadcast between network element interception, analysis MSS and the Dynamic Host Configuration Protocol server of wireless access network, and take corresponding processing that be embodied as the process of MSS distributing IP address, it comprises according to analysis result:

Step 51, MSS (client computer) will file an application to distribute the DHCP Discover broadcast of dynamic IP addressing request to send to the BS of wireless access network according to the form of the data flow of eating dishes without rice or wine.

The ASN-GW that the BS network element of step 52, described wireless access network passes through described DHCP Discover broadcast the corresponding wireless access network of this BS by the tunnel set up between BS and the ASN-GW or Data-carrying.

Step 53, described ASN-GW gateway are tackled, are analyzed described request, obtain analysis result.

Step 54, described ASN-GW gateway ask pass through each Dynamic Host Configuration Protocol server by the broadcast of DHCP Discover with described IP according to analysis result.

Step 55, after described Dynamic Host Configuration Protocol server receives described IP request, then from address pool, take out an IP address; Return a DHCP Offer message according to described IP address, broadcast described DHCP Offer message then with the IP available address.

The ASN-GW gateway interception of step 56, described wireless access network, the DHCPOffer message of the described broadcasting of analysis obtain analysis result.

The BS that the ASN-GW gateway of step 57, described wireless access network passes through described DHCP Offer broadcast described wireless access network by the tunnel set up between BS and the ASN-GW or Data-carrying.

Step 58, described BS pass through MSS with described DHCP Offer message according to the form of the data flow of eating dishes without rice or wine.

Step 59, described MSS select the IP address according to the DHCP Offer message of the IP available address of a plurality of Dynamic Host Configuration Protocol server that receive, and sending to the BS of described wireless access network according to the DHCP Request request broadcast message that the form of the data flow of eating dishes without rice or wine will include selected IP address, prison is received message or signaling then.

The ASN-GW that the BS network element of step 60, described wireless access network passes through described DHCP Request broadcast the corresponding wireless access network of this BS by the tunnel set up between BS and the ASN-GW or Data-carrying.

The ASN-GW gateway interception of step 61, described wireless access network, the DHCPRequest request message of the described broadcasting of analysis obtain analysis result.

Step 62, described ASN-GW gateway send to Dynamic Host Configuration Protocol server by broadcast with described Request request message according to described analysis result.

Step 63, each Dynamic Host Configuration Protocol server are checked described DHCP Request request message.

If be assigned with, then beam back the IP address assignment failed message by broadcast;

If also be not assigned with, then beam back DHCP Ack (IP address assignment success) message by broadcast.

Step 64, the described dhcp response message of described ASN-GW gateway intercept analysis, and obtain corresponding analysis result.

After the message of the IP address assignment success of confirming to obtain MSS, then execution in step 65, i.e. the ASN-GW gateway of the described wireless access network BS that described DHCP Ack broadcast passed through described wireless access network by the tunnel set up between BS and the ASN-GW or Data-carrying.

Step 66, described BS send to corresponding MSS by the data stream format of eating dishes without rice or wine with described DHCP Ack message.

Simultaneously ASN-GW upgrades the context of MSS, and the IP carrying for this MSS with on the sign of MSS is related, is set up simultaneously in this IP address, for example sets up tunnel foundation on the Interface R3 or the like at the tunnel on the R6 interface of this MSS.

When what confirm to obtain is DHCP Nack message, i.e. IP address assignment failure so just directly is forwarded to MSS with this message through BS.

When described MSS need re-rent institute's IP address allocated, and initiatively initiate the IP address when discharging request, the associated description among processing procedure and first embodiment duplicates, and is not described in detail.

The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims

1. the method for in the wireless access technology dynamic IP addressing being handled is characterized in that, comprising:

A, when client computer need be re-rented or discharge the dynamic IP addressing of being distributed, described client computer is by the chain of command message of eating dishes without rice or wine of itself and wireless access network, and the result of Dynamic Host Control Protocol dhcp process is reported to described wireless access network;

2. method according to claim 1 is characterized in that, described steps A specifically comprises:

3. method according to claim 2 is characterized in that, described steps A 1 specifically comprises:

Or,

4. method according to claim 3 is characterized in that,

Described steps A 12 specifically comprises:

Or,

Described steps A 13 specifically comprises:

Or,

A136, described Dynamic Host Configuration Protocol server make and allow to re-rent response or stop to re-rent response according to the described request message of re-renting, after this unicast response message is received in the base station of wireless access network correspondence, described unicast response message is passed through the corresponding client machine by the air interface between itself and the client computer;

Described steps A 15 specifically comprises:

Or,

5. according to arbitrary described method in the claim 1 to 4, it is characterized in that before described steps A, described method also comprises:

Or,

6. method according to claim 5 is characterized in that, described step C1 specifically comprises:

7. method according to claim 6 is characterized in that, described step C11 specifically comprises:

Or,

8. method according to claim 6 is characterized in that, described step C12 specifically comprises:

C122, return a message with the IP available address, broadcast by the ASN-GW gateway of described wireless access network then, pass through the base station by broadcasting packet according to described IP address;

Or,

9. method according to claim 6 is characterized in that, described step C13 specifically comprises:

10. method according to claim 9 is characterized in that, described step C132 specifically comprises:

Or,

Described DHCP request message is broadcasted in the base station of C1325, wireless access network, passes through each Dynamic Host Configuration Protocol server by broadcast.

11. method according to claim 9 is characterized in that,

Network element by described wireless access network described in the step C133 specifically comprises the process that described IP address assignment failed message passes through described client computer:

Or,

Network element by described wireless access network described in the step C133 specifically comprises the process that described IP address assignment success message passes through described client computer:

Or,

12. method according to claim 5 is characterized in that, described step C2 specifically comprises:

13. method according to claim 12 is characterized in that,

Described step C21 specifically comprises:

Described step C23 specifically comprises:

Described step C24 specifically comprises:

14. method according to claim 13 is characterized in that,

Described step C242 specifically comprises:

Described step C244 specifically comprises:

15. a method that reports the dhcp process result is characterized in that, comprising:

When client computer need be re-rented or discharge the dynamic IP addressing of being distributed, described client computer is by the chain of command message of eating dishes without rice or wine of itself and wireless access network, the result of Dynamic Host Control Protocol dhcp process is reported to described wireless access network, so that described wireless access network is according to the result of described dhcp process, the resource relevant with the dynamic IP addressing of being distributed distributed, discharge and/or charge stops.

16. method according to claim 15 is characterized in that, this method specifically comprises:

Or,