CN1297174C - Method for user terminal communication through Package Domain of Public Land Mobile Telecommunication Network - Google Patents
Method for user terminal communication through Package Domain of Public Land Mobile Telecommunication Network Download PDFInfo
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Abstract
The present invention discloses a method for user terminal communication through the Group Domain of the Public Land Mobile Telecommunication Network, which at least comprises the following steps: A) a calling user terminal sends out an activation request message of creating context for the GGSN, and called APN numbers are carried by the request message; B) the configuration information of the APN Domain Name and the activation configuration information of the network side are searched in the GGSN; C) the GGSN creates the context of the calling user terminal, and sends out a network side activation process for the called user terminal synchronously to wait for the called user terminal to send out a context creating request message which responds to the network side activation; D) after the context creating request message which responds to the network side activation, which is sent out by the called user terminal, is received by the GGSN, the context of the called user terminal is created; E) the calling user terminal and the called user terminal respectively send out Domain Name Service requests for a server which stores the coincidence relation of MSISDN and APN numbers and IP addresses to carry out Domain Name resolution, and then, numbers respectively return to the IP address of the opposite terminal to create the communication link. The present invention creates the communication link among users (UE) in an IP access mode.
Description
Technical field
The present invention relates to wireless communication field, specifically, relate to and pass through public land mobile communication network packet domain method for communicating in Wideband Code Division Multiple Access (WCDMA) (WCDMA) or GPRS (GPRS) network between the user terminal (UE).
Background technology
WCDMA or gprs system network are made of wireless access network and core net, core net is divided into circuit domain and two subsystems of packet domain, circuit domain comprises mobile switching centre (MSC), attaching position register equipment such as (HLR), for user terminal provides basic telecommunications business based on circuit link, supplementary service, bearer service, IN service etc., its feature is a reliability height, most of professional real-time, but speed is low, the expense height; Packet domain comprises Serving GPRS Support Node (SGSN), Gateway GPRS Support Node (GGSN), name server equipment such as (DNS), for user terminal provides IP-based packet bearer business, as web page browsing, game on line, screen program request etc., its feature be reliability not high, do not require real-time service quality (QOS), but the speed height, expense is low.
Referring to shown in Figure 1, Fig. 1 is for supporting user terminal communication networking schematic diagram.Among the figure, Access Network comprises base station (NodeB), radio network controller (RNC), and core net comprises MSC, GGSN, SGSN, DNS, and the external packet data net comprises that Web content provides end (ICP), professional control that end (SCP), aaa server are provided.
Heavy line represents that two UE connect the formed communication link in back by circuit domain call among the figure.When a UE calls out another one UE, the calling party passes to MSC to call information through wireless access network, MSC is according to the positional information of called UE registration, call out called UE, between two UE, set up communication link then, can carry out speech business end to end or other bearer service based on circuit.
The bearing link that uses when fine line is represented UE visit external packet data network among the figure.When UE initiatively initiates to visit the external packet data net, activate message and be delivered to SGSN equipment through wireless access network, SGSN is APN (APN according to the external network sign of UE visit, Access PointName), by the GGSN address that dns resolution obtains inserting, SGSN passes to GGSN activating message again, and the GGSN termination activates message, set up a bearing link from UE to GGSN, UE just can use this bearing link access external data network then.GGSN can directly visit external network as the gateway device that inserts extenal grouped network, does not need to set up the link between GGSN and external server.
In WCDMA that defers to 3GPP R99 and R4 release protocol or gprs system network, UE mainly is a visit external packet data network by the PLMN packet domain, and can not call out another one UE by packet domain, calling between two UE can only be undertaken by circuit domain, need monopolize the circuit resource of Radio Resource and core net; Bearing link by circuit domain is set up is subjected to speed limit, and bearer service is limited, and functional expenses such as the voice that undertaken by circuit domain, video telephone are very high.
In present WCDMA or gprs system network, because communication UE both sides have the static ip address that belongs to same APN, and communicating pair is all known this static ip address of the other side, therefore during the intercommunication of two UE, need initiatively to activate, can not call out mutually, and activate context at same APN simultaneously, use the outer Special Equipment of GGSN equipment that IP datagram is carried out routing forwarding, to realize the mutual visit between two UE.This method is used inconvenient, and restriction is a lot, can't carry out actual large-scale application, more is used for demonstration or test.
Along with the 3GPP agreement to the evolution of R5 version, the packet domain of core net and circuit domain will develop into the packet network of an all-IP, need also can to realize mutual calling between two UE by the all-IP net.But this method need be made big change to present equipment of the core network, and needs to increase miscellaneous equipment, full-fledged still needing the time.
Summary of the invention
The object of the present invention is to provide between a kind of UE and the UE method by the direct communication of PLMN packet domain, equipment of the core network made big change and do not increase on the basis of equipment need not, realization is set up communication link between UE with the IP access way.
The present invention realizes by following concrete scheme:
By public land mobile communication network packet domain method for communicating, this method comprises at least between a kind of user terminal:
A) call subscriber terminal initiates to create contextual activation request message to GGSN, this request message carries the called Access Point Name designation code that is made of first label and suffix label, wherein, described first label comprises the called mobile station international discriminating number at least, and described suffix label comprises the APN domain name at least;
B) after GGSN receives described activation request message, search the configuration information of APN domain name at GGSN, and activate configuration information according to the network side that the called mobile station international discriminating number is searched GGSN, obtain the international mobile subscriber identity and the IP address of called user terminal;
C) GGSN creates the call subscriber terminal context, simultaneously called user terminal is initiated network side activation, and first tag modification in the called Access Point Name designation code is become the travelling carriage international discriminating number of call subscriber terminal, generate caller Access Point Name designation code, wait for the establishment context request message of called user terminal initiation response to network side activating then;
D) after GGSN receives the establishment context request message of called user terminal one response to network side activating, create the called user terminal context, the context service quality of carrying out called user terminal is new technological process more, to having deposited the travelling carriage international discriminating number, the server of Access Point Name designation code and IP address corresponding relation is initiated registration travelling carriage international discriminating number, the Access Point Name designation code, the request message of IP address corresponding relation is registered the back at this server and is returned registration travelling carriage international discriminating number to GGSN, the Access Point Name designation code, the response message of IP address corresponding relation;
E) GGSN returns success to activate to call subscriber terminal and called user terminal respectively and replys, and the context that call subscriber terminal and called user terminal are set is interrelated context, then, call subscriber terminal and called user terminal send the domain name service request to the server of depositing travelling carriage international discriminating number, Access Point Name designation code and IP address corresponding relation respectively, this server carries out domain name mapping according to the Access Point Name designation code, return peer IP address respectively, set up communication link.
Wherein, described step B further comprises,
B01) GGSN analyzes described activation request message content, the suffix label of described called Access Point Name designation code as a new APN domain name, search at GGSN whether its configuration information is arranged, if have and meet the Access Point Name designation code of calling out between user terminal, execution in step B02 then, otherwise handle by the activation process that user terminal initiatively initiates to visit the external packet data net;
B02) Network Search side activating configuration information does not activate configuration information if find network side, then returns the activation identification message to the SGSN of call subscriber terminal side, and this SGSN reselects the GGSN that supports the called user terminal network side to activate and activates.
Described step C further comprises,
C01) GGSN initiates the authentication process of call subscriber terminal to aaa server, and caller activates failure if authentication is unsuccessful, if authentication success then initiate network side activation to called user terminal;
C02) if network side activates failure, GGSN returns to call subscriber terminal and activates the failure response message.
Described step D further comprises,
D01) GGSN checks whether the establishment context request message content of described called user terminal response to network side activating meets the following conditions:
A, whether be that the IP type context activates message;
Whether the suffix label of b, described called Access Point Name designation code is identical with the suffix label substance of described caller Access Point Name designation code;
Whether whether first label of c, described caller Access Point Name designation code is identical with the travelling carriage international discriminating number of call subscriber terminal, have the context that is activating to exist when GGSN searches according to this travelling carriage international discriminating number;
Whether the suffix label of d, described called Access Point Name designation code searches configuration information as the new access point title-domain-name at GGSN, the Access Point Name designation code whether GGSN is configured to this new access point title-domain-name to call out between user terminal, and whether identical with the suffix label of described caller Access Point Name designation code;
If the full up foot of above-mentioned condition then carries out more new technological process of QOS, and makes called user terminal context and the employed service quality gap minimum of call subscriber terminal context, otherwise the network side of the extenal grouped network that conducts interviews activates;
D02) GGSN deletes the caller of foundation and the context of called user terminal to the authentication process of aaa server initiation called user terminal if authentication is unsuccessful;
D03) according to the attribute that inserts the name designation code, the charging that GGSN initiates between user terminal to aaa server begins request;
D04) unsuccessful if any one user terminal in call subscriber terminal and the called user terminal charges, then delete the context of this two users' terminal, otherwise returning charging to GGSN, aaa server begins to reply;
Described step e further comprises, activate successfully after, the LUT storage is to the corresponding relation of the travelling carriage international discriminating number of end user terminal, IP address, Access Point Name designation code; If call subscriber terminal or called user terminal activate failure, GGSN returns the failure response message, and initiatively deletes the context to end user terminal; If the context of this two users' terminal is then deleted in any one user terminal registering IP address failure in call subscriber terminal and the called user terminal; If the domain name service analysis request of any one user terminal failure in call subscriber terminal and the called user terminal, the context of this two users' terminal of deexcitation then, the corresponding relation of the travelling carriage international discriminating number that deletion server and LUT are stored, IP address, Access Point Name designation code to end user terminal.
In the above-mentioned steps, the form of described Access Point Name designation code is the travelling carriage international discriminating number. the APN domain name.The described server of depositing travelling carriage international discriminating number, Access Point Name designation code and IP address corresponding relation can be shared with aaa server.Described network side activates configuration information and comprises travelling carriage international discriminating number, international mobile subscriber identity and static ip address at least, perhaps comprises travelling carriage international discriminating number, international mobile subscriber identity and dynamic IP addressing network side activation marker at least.The configuration information of described APN domain name comprises that at least the packet data protocol type that configuration GGSN does not carry out APN number verification and carrying is the IP type.When using dynamic IP addressing, described suffix label further comprises caller travelling carriage international discriminating number and called mobile station international discriminating number.
The present invention by GGSN according to activating the entrained APN number of request message, carry out domain name mapping by the server of depositing MSISDN, APN number and IP address corresponding relation and obtain caller and called IP address, and by being made up again after the original activation of GGSN equipment change system, QOS renewal, the context deletion, realized adopting IP-based transmitted in packets mode to set up communication link, can effectively utilize Internet resources and reduce cost by packet domain communication between UE by packet domain.UE that sets up by packet domain and UE be communication link end to end, and speed can reach 384kbps, can carry at present any applied business based on the IP grouping.
The user terminal quantity that the present invention supported is big, needn't take a lot of internal memories of GGSN, can be used for carrying out large-scale business.
Description of drawings
Fig. 1 is for supporting user terminal communication networking schematic diagram;
Fig. 2 is the flow process of call setup between UE;
Fig. 3 is a network side activation schematic diagram;
QOS upgrades flow chart between the UE that Fig. 4 initiatively initiates for non-GGSN;
QOS upgrades flow chart between the UE that Fig. 5 initiatively initiates for GGSN;
The deletion flow chart that Fig. 6 initiatively initiates for non-GGSN;
The deletion flow chart that Fig. 7 initiatively initiates for GGSN.
Embodiment
For make purpose of the present invention, technical scheme, and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Referring to shown in Figure 1, dotted portion represents that UE and UE set up communication path by packet domain among the figure.UE by carrying out the APN domain name mapping, obtains the address of opposite end UE according to travelling carriage international discriminating number (MSISDN) and APN number, utilizes the APN number to transmit caller and called number, sets up IP-based communication link between two user terminal UE.Wherein, the APN number comprises first label, suffix label, and first label is a Mobile Subscriber International ISDN Number, and this number is meant that call subscriber terminal dials the number that cries for calling out mobile subscriber terminal, and the suffix label is an APN domain name asterisk wildcard.Between UE and UE can be user terminal in the same PLMN calling with communicate by letter, also can be calling with user terminal between two PLMN nets of roaming function and communicate by letter.
For realizing the object of the invention, need the equipment of setting up communication link is configured.
GGSN is set supports following function:
(1) when handling context activation message, if UE calls out the activation message of UE, then initiate network side activation to called UE, between two UE, set up IP-based communication link;
(2) when handling context Qos updating message,, then initiate network side context Qos renewal process, and make two the employed Qos gap of context minimums another one UE if the context Qos message of upgrading is to be used for communicating by letter between two UE;
(3) when handling context deletion message,, then initiate deletion simultaneously to another user terminal context message if the context message of deletion is used for communicating by letter between two UE;
(4) network enabled side activating function can be that the network side of static address or dynamic address activates, and UE is provided with the function of display of calling APN number when prompting network side active information;
(5) the service authority management function is set: by Radius authentication functions when GGSN supports that user terminal is called out, to realize to using this professional authority to manage.By support at GGSN that user terminal is called out, Radius billing function during deexcitation, to realize to using this professional user terminal to collect the charges.
(6) transmission reports and removes the message of MSISDN, IP address, APN corresponding relation to the server of depositing MSISDN, APN number and IP address corresponding relation.
(7) GGSN needs configuration of APN number information: GGSN that the suffix label of the APN number of user terminal calling is configured as a new APN domain name, for example, when calling out, use user terminal the APN number to be: 13641091737.wcdma.com, in GGSN configuration of APN domain name be: wcdma.com, its some attributes must be configured to: packet data protocol (PDP) type=IP type of preference pattern=1 (expression GGSN does not carry out the APN number verification), carrying.
GGSN needs the information of configure user terminal network side activating, each user terminal with network side mobilizing function has following deploy content: MSISDN, international mobile subscriber identifier (IMSI) and the static ip address network side user terminal IP address when activating, perhaps MSISDN, IMSI and dynamic IP addressing network side activation marker at least.All use the user terminal of express traffic, and their network side active information all will be configured on the GGSN according to number section of user terminal, the ownership region at user terminal place or the modes such as equally loaded of GGSN.
UE is set supports following function:
(1) UE supports based on the end-to-end application software of IP grouping, can edit, storage, browsing multimedia message.
(2) UE supports the configuration and the deexcitation function of APN number.
When (3) context activation is successful, the MSISDN of local UE storage opposite end UE and the corresponding relation of IP address; During the context deexcitation, local UE removes the MSISDN of opposite end UE and the corresponding relation of IP address.
(4) between UE, carry out on the path by the packet domain direct communication professional the time, be provided with and have the process that domain name mapping obtains peer IP address.
(5) easy to use for user terminal, UE can make amendment on application software, makes user terminal as long as import called number, and the complete form of APN number is generated automatically by the application software of UE.
(6) better, UE also can be set and support to activate simultaneously two APN numbers.
Because after GGSN gave UE1, UE2 distributing IP address, standard signaling messages was not notified local UE IP address about opposite end UE.And at present when operator will provide business such as pushing away (PUSH), multimedia service service (MMS) to user terminal, all need GGSN that the corresponding relation of MSISDN and IP address is provided to the external packet data network, for example, the radius protocol interface of GGSN by standard corresponding relation from IP address to the SCP or the aaa server of intelligence that report MSISDN and.So need to be provided with and deposit MSISDN, the server of APN number and IP address corresponding relation, this server is the external packet data network server with DNS function, and need carry out following setting: in setting up based on the communication path between two UE of packet domain, the MSISDN of opposite end UE will be deposited, the APN number and and the server of IP address corresponding relation with use PUSH, deposit MSISDN during MMS, the server of IP address corresponding relation is shared, set up one separately with the APN number and comprise MSISDN, the mapping table of APN number and IP address list item, this server also will realize handling the function of the domain name mapping request data package that UE sends simultaneously, returns the IP address of relevant opposite end UE for the UE of call request.
Because certain user terminal may be called out by a plurality of user terminals simultaneously, when using dynamic IP addressing, same called MSISDN has different IP addresses at different APN, so when UE sent the domain name mapping request data package, domain name need be set will be with going up caller, called number.Calling number for example. called number .wcdma.com, take out called number, calling number .wcdma.com during server parses, come the IP address of unique definite opposite end UE according to called number, calling number .wcdma.com.
Certainly it is shared that this server can be not be deposited the server of MSISDN, IP address corresponding relation during with above-mentioned application PUSH, the MMS that mentions yet, can be other equipment, as long as this equipment has the packet of the MSISDN that receives GGSN and report, IP address, APN corresponding relation, and have handle the DNS request data package ability just.
GGSN and deposit the message that reports and remove MSISDN, IP address, APN corresponding relation between the server of MSIADN, APN number and IP address corresponding relation can be with reporting request beginning (Accounting-Request START) message and reporting request to stop (Accounting-Request STOP) message in the radius protocol of standard, also can use self-defining internal interface, this can be when specific implementation and decides.
After local UE and opposite end UE activate success, the server of depositing MSIADN, APN number and IP address corresponding relation from trend sends the DNS request, just the same by the domain name online with UE, the process that a domain name mapping is arranged, obtain the IP address of opposite end UE as local UE after, there are UE this locality in this IP address and corresponding opposite end MSISDN, so that follow-up transmission data are used.
During the context of deexcitation simultaneously, the corresponding relation of the MSISDN that in the server and UE this locality has, IP address, APN all will be deleted.
DNS is set supports following function: all use the APN number relevant with called number when calling out another one UE owing to each UE, as 13641091737.wcdma.com, so a large amount of APN numbers exists in the system.These APN numbers all are that user terminal is free, and except that first label, the suffix label all is identical, thereby DNS need use the method for asterisk wildcard that they are carried out address resolution, can be configured to following form at DNS: * .wcdma.com ... the GGSN address.That is, configuration DNS supports the domain name mapping of wildcarding, so that can resolve large batch of APN number with asterisk wildcard feature;
In addition, also need dispose the APN number selection mode that SGSN, HLR support " user terminal selecting APN number is not verified "; HLR should allow the APN CAMEL-Subscription-Information of asterisk wildcard form, and promptly user terminal can be selected any APN and do not inserted by the SGSN refusal.
Activating at same GGSN with two UE below is example, describes the flow process of calling out and set up communication path between UE from system flow.The flow process that does not wherein relate to is same as the prior art and defer to 3GPP agreement regulation, relate to GGSN, UE in the process of call setup, deposit MSIADN, the required support function of equipment such as server of APN number and IP address corresponding relation as previously mentioned, described function is the equipment prior function.
Referring to shown in Figure 2, Fig. 2 is the flow process of call setup between UE, and its process is as follows:
Step 201, UE1 initiates to create context request: UE1 to GGSN and activates the IP type context, and the request message of initiation carries the APN number of user terminal selecting, and the APN number format is as follows:
Called MS ISDN.APN domain name (1)
13641091737.wcdma.com for example, wherein first label 13641091737 is called user terminal (MSISDN) numbers, suffix label wcdma.com is the APN domain name, is the APN domain name used when packet domain is called out another UE passed through of operator's regulation;
Step 202, after GGSN receives UE1 activation request message, analyze message content, if the IP type context activates message, and carrying the APN number in the message is as (1) described form, then first label of APN number is designated as called UE 2 numbers (MSISDN), the suffix label as a new APN domain name, search the configuration information whether this APN domain name is arranged at GGSN, for example search whether wcdma.com is arranged.If there is and meets the APN domain name of UE1 calling UE2, think that then this activation is the activation request that UE1 calls out UE2; Otherwise handle according to normal activation process;
Step 203, the network side that GGSN looks into GGSN according to the called Mobile Subscriber International ISDN Number that step 202 write down activates configuration information, because each user terminal with network side mobilizing function has following deploy content: MSISDN, IMSI and the activation of static ip address network side at least, perhaps MSISDN, IMSI and dynamic IP addressing network side activate; Therefore if search successfully, GGSN can obtain IMSI and the IP address of called user terminal UE2, registering, and need guarantee that GGSN does not have caller and called user terminal parameter same context to exist to the server of depositing MSIADN, APN number and IP address corresponding relation; If search failure, illustrate that this GGSN does not support the network side of called user terminal to activate, and returns the activation failed message to the SGSN1 of UE1.According to agreement, the SGSN1 of UE1 can reselect the GGSN that supports called user terminal UE2 network side to activate and activate, if system supports the dynamic address network side to activate, then this programme is set up equally;
Step 204, at the context of GGSN establishment UE1, Resources allocation, and the authentication process of initiation UE1, UE1 activates failure if authentication is unsuccessful, and UE1 can not use the business that leads directly between user terminal;
Step 205, if authentication success, initiate network side activation to called UE 2: regenerate the APN number, form such as (1) description, but first tag modification is become the Mobile Subscriber International ISDN Number that activates the call subscriber terminal UE1 that extracts the message from UE1, the suffix label substance that uses when the suffix label substance activates with UE1 is the same, and as 13688856789.wcdma.com, wherein 13688856789 is call subscriber terminal numbers;
If network side activates failure, call failure returns activation failure response message to UE1; Otherwise wait for that UE2 initiates the establishment context request of response to network side activating;
Step 206, UE2 initiates to create context request to GGSN; GGSN analyzes message content after receiving the response activation request message of UE2, checks whether meet the following conditions:
A, whether be that the IP type context activates message;
Whether carry the APN number in b, the message as (1) described form, and whether identical with the suffix label substance of UE1 use;
Whether whether first label of c, APN number is identical with calling UE 1 number MSISDN, have the context that is activating to exist when GGSN searches according to this MSISDN;
D, APN number suffix label search configuration information as new APN domain name at GGSN, and whether GGSN is configured to the APN number that UE1 calls out UE2 to this new APN domain name, and the suffix label of the APN number that whether uses with UE1 is identical;
If the full up foot of above condition is then thought the activation message that UE2 response UE1 calls out, otherwise the activation of the network side of the extenal grouped network that conducts interviews if no network side activates, is then deleted the context that call subscriber terminal is set up;
Step 207, GGSN is that UE2 creates context and Resources allocation, needs special the processing when context Qos of called user terminal UE2 is consulted, the negotiation value that makes it as far as possible and the contextual Qos negotiation of UE1 value difference apart from minimum, if the negotiation value can't satisfy, then carry out more new technological process of QOS;
Step 208 if UE2 need arrive AAA SERVER authentication, is then initiated authorizing procedure.If UE1 or UE2 failed authentication, GGSN are initiated the context of two UE of deletion foundation;
Step 209, according to the attribute of APN number, GGSN begins request to the charging that AAA SERVER initiates two UE;
Step 210, GGSN initiates the message request of registration MSISDN, APN number and the IP address three's corresponding relation of two UE to the server of depositing MSIADN, APN number and IP address corresponding relation;
Step 211, AAA SERVER returns to charge to GGSN and begins to reply;
Step 212, the server of depositing MSIADN, APN number and IP address corresponding relation returns replying of registration MSISDN, APN number and IP address three's corresponding relation to GGSN;
Step 213, if UE1 and UE2 activate success, GGSN returns success the activation response message to UE1, UE2 respectively, and the context that two UE are set is interrelated context, to be used for two data forwarding between UE; If UE1 or UE2 activate failure, GGSN returns the failure response message, and initiatively triggers the context of deletion another one user terminal; If wherein any one charges and gets nowhere, then two contexts are all deleted; If wherein any one registering IP address is unsuccessful, then two contexts are all deleted;
Step 214, UE1 and UE2 are after activating successfully, send the DNS request to the server of depositing MSIADN, APN number and IP address corresponding relation, resolve the peer IP address function because this server also has according to the APN number, so this server returns the DNS request-reply.As long as there is a side not obtain the IP address of opposite end, i.e. dns resolution request is failed, and all wants the context of deexcitation two UE.
Step 215, communication path between UE1 and UE2 builds up, and next GGSN is responsible for transmitting data between two UE: the upstream data that UE1 sends is reported, after GGSN finds context, according to UE1 and the contextual incidence relation of UE2, send to UE2 as downlink data; To the upstream data newspaper that UE2 sends, GGSN sends to UE1 with same procedure.
Call out between above-mentioned UE and set up in the process of communication path, the described network side activation of step 205 is referring to shown in Figure 3, and detailed process is as follows:
Step 300, when GGSN receives PDP PDU, GGSN carries out the initialization of network side activation;
Step 301, when GGSN judge be between UE by the packet domain direct communication, and when finding the called IP address that the static ip address network side activates, send GPRS routing iinformation (SendRouteing Info for GPRS) message to HLR;
Step 302, HLR returns GPRS routing iinformation response message to GGSN, and this message has IMSI, SGSN address, user terminal place (SGSN Address), can not arrive reason (the Mobile Station Not Reachable Reason) parameter of MS;
Step 303, GGSN is again to the SGSN at the current place of called UE hairnet network side activating notice request, be protocol Data Unit (PDU) notice request (PDU Notification Request), this request has parameters such as IMSI, packet data protocol type (PDP Type), pdp address (Address), APN number;
Step 304 after SGSN receives network side activation notice request, is returned network side to GGSN and is activated the notice response message, and promptly the PDU notice is replied (PDU Notification Request);
Step 305, SGSN sends out PDP context activation request (Request PDP ContextActivation) to UE, and this request has parameters such as affairs identifier (TI:Transaction Identifier), PDP Type, PDP Address, APN number;
Step 306, UE and GGSN carry out pdp context activation.
If it is that the dynamic IP addressing network side activates that GGSN judges according to the dynamic IP addressing network side activation marker in the configuration information, then GGSN distributes dynamic IP addressing to user terminal, and remaining flow process is similar to the static ip address network side and activates.
Call out between UE and set up in the flow process of communication path, the described QOS of step 207 more between the UE that can right and wrong GGSN initiatively initiates of new technological process QOS upgrade, also can be that QOS upgrades between the UE that initiatively initiates of GGSN.
Referring to shown in Figure 4, QOS upgrades flow chart between the UE that Fig. 4 initiatively initiates for non-GGSN, and its detailed process is as follows:
Step 401, the SGSN1 of UE1 or UE1 side initiatively initiates the Qos update inquiry information to GGSN;
Step 402 after GGSN receives the Qos update request, is held consultation to the Qos of user terminal requests, according to the Qos after consulting UE2 is initiated the network side update inquiry information;
Step 403 after the SGSN2 of UE2 or UE2 side holds consultation to the Qos of network side request and handles, is returned Qos to GGSN and is upgraded and reply;
Step 404, GGSN returns initiatively QOS renewal to UE1 and replys, and this response message comprises following situation: reply if GGSN receives the renewal failure of UE2, then return Qos renewal failure to UE1 and reply, context remains unchanged; If GGSN receives the Qos renewal successful respond that UE2 returns, even the QoS that UE2 replys may be inconsistent with the Qos of UE1 request, also need not again UE1 to be initiated the network side renewal process, only UE1 and UE2 are carried out more other processes of new technological process, for example upgrade context and accounting server etc., GGSN returns Qos to UE1 and upgrades successful respond.
If above-mentioned more new technological process is unsuccessful normally, delete two contexts; Such as the renewal process of other reason initiation such as Routing Area Update, load balancing, only upgrade the context of active user's terminal if GGSN receives SGSN, the another one user terminal is not initiated renewal process, identical with the normal process method.
Referring to shown in Figure 5, QOS upgrades flow chart between the UE that Fig. 5 initiatively initiates for GGSN.GGSN then upgrades two contextual Qos of UE simultaneously because certain reason needs to upgrade contextual Qos, unless the Qos that upgrades is consistent with certain contextual Qos.The process of upgrading is similar to the QOS renewal that non-GGSN initiatively initiates, and GGSN initiates network side QOS update request to UE1, UE2 respectively, and UE1, UE2 return the network side renewal to GGSN respectively and reply.
More than Shuo Ming function only is applicable to the WCDMA system, and gprs system is the Qos that initiates of network enabled side new technological process more not, press the normal process processing.
Call out between UE and set up in the flow process of communication path, the deletion flow process that the context of the described deletion of step 208 or step 213 UE can right and wrong GGSN be initiatively initiated also can be the deletion flow process that GGSN initiates.
Referring to shown in Figure 6, the deletion flow chart that Fig. 6 initiatively initiates for non-GGSN.Its detailed process is as follows: when equipment such as UE1 or SGSN1 are initiated the deletion context request, according to the 3GPP agreement, when GGSN receives the deletion message of UE1, deletion GGSN context distributed resource, return deletion successful respond message to UE1 then, if support AAA to charge, initiate Radius charging terminal procedure to aaa server again, initiate to nullify the process of MSISDN, APN number and IP address three's corresponding relation simultaneously to the server of depositing MSISDN, APN number and IP address corresponding relation; GGSN initiates the contextual process of network side deletion UE2 to UE2 simultaneously, UE2 return the deletion reply after, the UE2 context resource that the GGSN deletion distributes, initiate Radius charging terminal procedure again, and the process of initiate nullifying MSISDN, APN number and IP address three's corresponding relation to the server of depositing MSISDN, APN number and IP address corresponding relation, link circuit deleting is finished.
Referring to shown in Figure 7, the deletion flow chart that Fig. 7 initiatively initiates for GGSN.Its process is similar to the deletion flow process that non-GGSN initiatively initiates.Because when GGSN triggers UE context of deletion, need to trigger simultaneously the context of another UE2 of deletion, therefore GGSN initiates the deletion context request to UE1 and UE2 respectively simultaneously, after GGSN receives the deletion context acknowledge message of UE1, UE2, deletion institute context distributed resource, initiate Radius charging terminal procedure again, and the process of initiate nullifying MSISDN, APN number and IP address three's corresponding relation to the server of depositing MSISDN, APN number and IP address corresponding relation, link circuit deleting is finished.
First label of above-mentioned APN number not only is confined to comprise Mobile Subscriber International ISDN Number, can also be the out of Memory that can discern user terminal, and the suffix label also not only is confined to comprise the APN domain name, can also be the APN out of Memory.
Claims (10)
1, pass through public land mobile communication network packet domain method for communicating between a kind of user terminal, it is characterized in that this method comprises at least:
A) call subscriber terminal initiates to create contextual activation request message to GGSN, this request message carries the called Access Point Name designation code that is made of first label and suffix label, wherein, described first label comprises the called mobile station international discriminating number at least, and described suffix label comprises the APN domain name at least;
B) after GGSN receives described activation request message, search the configuration information of APN domain name at GGSN, and activate configuration information according to the network side that the called mobile station international discriminating number is searched GGSN, obtain the international mobile subscriber identity and the IP address of called user terminal;
C) GGSN creates the call subscriber terminal context, simultaneously called user terminal is initiated network side activation, and first tag modification in the called Access Point Name designation code is become the travelling carriage international discriminating number of call subscriber terminal, generate caller Access Point Name designation code, wait for the establishment context request message of called user terminal initiation response to network side activating then;
D) after GGSN receives the establishment context request message of called user terminal one response to network side activating, create the called user terminal context, the context service quality of carrying out called user terminal is new technological process more, to having deposited the travelling carriage international discriminating number, the server of Access Point Name designation code and IP address corresponding relation is initiated registration travelling carriage international discriminating number, the Access Point Name designation code, the request message of IP address corresponding relation is registered the back at this server and is returned registration travelling carriage international discriminating number to GGSN, the Access Point Name designation code, the response message of IP address corresponding relation;
E) GGSN returns success to activate to call subscriber terminal and called user terminal respectively and replys, and the context that call subscriber terminal and called user terminal are set is interrelated context, then, call subscriber terminal and called user terminal send the domain name service request to the server of depositing travelling carriage international discriminating number, Access Point Name designation code and IP address corresponding relation respectively, this server carries out domain name mapping according to the Access Point Name designation code, return peer IP address respectively, set up communication link.
2, method according to claim 1 is characterized in that, described step B further comprises,
B01) GGSN analyzes described activation request message content, the suffix label of described called Access Point Name designation code as a new APN domain name, search at GGSN whether its configuration information is arranged, if have and meet the Access Point Name designation code of calling out between user terminal, execution in step B02 then, otherwise handle by the activation process that user terminal initiatively initiates to visit the external packet data net;
B02) Network Search side activating configuration information does not activate configuration information if find network side, then returns the activation identification message to the SGSN of call subscriber terminal side, and this SGSN reselects the GGSN that supports the called user terminal network side to activate and activates.
3, method according to claim 1 is characterized in that, described step C further comprises,
C01) GGSN initiates the authentication process of call subscriber terminal to aaa server, and caller activates failure if authentication is unsuccessful, if authentication success then initiate network side activation to called user terminal;
C02) if network side activates failure, GGSN returns to call subscriber terminal and activates the failure response message.
4, method according to claim 1 is characterized in that, described step D further comprises,
D01) GGSN checks whether the establishment context request message content of described called user terminal response to network side activating meets the following conditions:
A, whether be that the IP type context activates message;
Whether the suffix label of b, described called Access Point Name designation code is identical with the suffix label substance of described caller Access Point Name designation code;
Whether whether first label of c, described caller Access Point Name designation code is identical with the travelling carriage international discriminating number of call subscriber terminal, have the context that is activating to exist when GGSN searches according to this travelling carriage international discriminating number;
Whether the suffix label of d, described called Access Point Name designation code searches configuration information as the new access point title-domain-name at GGSN, the Access Point Name designation code whether GGSN is configured to this new access point title-domain-name to call out between user terminal, and whether identical with the suffix label of described caller Access Point Name designation code;
If the full up foot of above-mentioned condition then carries out more new technological process of QOS, and makes called user terminal context and the employed service quality gap minimum of call subscriber terminal context, otherwise the network side of the extenal grouped network that conducts interviews activates;
D02) GGSN deletes the caller of foundation and the context of called user terminal to the authentication process of aaa server initiation called user terminal if authentication is unsuccessful;
D03) according to the attribute that inserts the name designation code, the charging that GGSN initiates between user terminal to aaa server begins request;
D04) unsuccessful if any one user terminal in call subscriber terminal and the called user terminal charges, then delete the context of this two users' terminal, otherwise returning charging to GGSN, aaa server begins to reply.
5, method according to claim 1 is characterized in that, described step e further comprises, activate successfully after, the LUT storage is to the corresponding relation of the travelling carriage international discriminating number of end user terminal, IP address, Access Point Name designation code; If call subscriber terminal or called user terminal activate failure, GGSN returns the failure response message, and initiatively deletes the context to end user terminal; If the context of this two users' terminal is then deleted in any one user terminal registering IP address failure in call subscriber terminal and the called user terminal; If the domain name service analysis request of any one user terminal failure in call subscriber terminal and the called user terminal, the context of this two users' terminal of deexcitation then, the corresponding relation of the travelling carriage international discriminating number that deletion server and LUT are stored, IP address, Access Point Name designation code to end user terminal.
6, method according to claim 1 is characterized in that, the form of described Access Point Name designation code is the travelling carriage international discriminating number. the APN domain name.
7, method according to claim 1 is characterized in that, the described server of depositing travelling carriage international discriminating number, Access Point Name designation code and IP address corresponding relation can be shared with aaa server.
8, method according to claim 1 and 2, it is characterized in that, described network side activates configuration information and comprises travelling carriage international discriminating number, international mobile subscriber identity and static ip address at least, perhaps comprises travelling carriage international discriminating number, international mobile subscriber identity and dynamic IP addressing network side activation marker at least.
9, method according to claim 1 and 2 is characterized in that, the configuration information of described APN domain name comprises that at least the packet data protocol type that configuration GGSN does not carry out APN number verification and carrying is the IP type.
10, method according to claim 1 is characterized in that, when using dynamic IP addressing, described suffix label further comprises caller travelling carriage international discriminating number and called mobile station international discriminating number.
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