CN1188993C

CN1188993C - Method of configuring interface between serving GPRS support node and base station system

Info

Publication number: CN1188993C
Application number: CN 00817279
Authority: CN
Inventors: T·尼尔松; L·威廉松
Original assignee: Telefonaktiebolaget LM Ericsson AB
Current assignee: Telefonaktiebolaget LM Ericsson AB
Priority date: 1999-12-16
Filing date: 2000-10-31
Publication date: 2005-02-09
Anticipated expiration: 2020-10-31
Also published as: SE515477C2; CN1411646A; AU1425901A; AR026973A1; SE9904655L; SE9904655D0; EP1243103A1; WO2001045333A1

Abstract

The present invention is related to a method of configuring an interface between a serving GPRS support node and a base station system. Allocation (401) of a new network service entity identifier is requested. In response to said request, a new network service entity identifier is automatically allocated (402) according to a predefined rule ensuring that the new network service entity identifier is unique within the serving GPRS support node. Data structures in the serving GPRS support node and the base station system are automatically initiated (403) by registering the allocated new network service entity identifier in said data structures.

Description

The method of the interface between configuration service GPRS Support Node and the base station system

The invention technical field

The present invention relates to the communication network of supporting general grouped wireless communication service (GPRS).More in particular, the present invention relates to the mode of the interface between configuration service GPRS Support Node (SGSN) and the base station system (BSS).

Description of Related Art

GPRS (GPRS) is the standard of the grouped data in the relevant gsm system of ETSI (ETSI).GPRS is also accepted by Telecommunications Industries Association (TIA), as the packet data standard of TDMA/136 system.Functional by being public land mobile network (PLMN) interpolation GPRS, operator can allow its user with the resource effective and efficient manner, is linked into the external network of internet protocol-based (IP).

Comprise the base station system (BSS) that is connected to Serving GPRS Support Node (SGSN) by Gb Interface in the communication network of support GPRS.Present Gb Interface all is based on frame relay.Comprise BSS GPRS agreement (BSSGP) layer in the Gb Interface, wherein base station system is connected (BVC) with reciprocity functional entity in the Serving GPRS Support Node through so-called BSSGP is virtual and communicates.The virtual connection of each BSSGP is all identified by the combination of BSSGP virtual connection identifier (BVCI) and Network entity identifier (NSEI).Being configured in of Gb Interface will utilize artificial process to implement to a great extent.

Summary of the invention

The present invention addresses the problem: be the interface between Serving GPRS Support Node and the base station system, particularly utilize the interface based on IP communication that effective configuration mode more is provided.

This problem can obtain solution basically by the following method, wherein distributes automatically in the data structure in Serving GPRS Support Node and base station system, and registers a new Network entity identifier automatically.

More in particular, can solve problem in the following way.In response to the request that distributes new Network entity identifier, can distribute new Network entity identifier automatically according to guaranteeing new Network entity identifier unique pre-defined rule in Serving GPRS Support Node.By in the data structure of Serving GPRS Support Node and base station system, registering the new Network entity identifier that is distributed, can begin this data structure automatically.

Overall purpose of the present invention is to provide effective and efficient manner more, and the interface between configure Serving GPRS Support Node and the base station system particularly uses the such interface based on IP communication.

The present invention more particularly purpose is to provide the mode of the interface between configurating base station system and the Serving GPRS Support Node, wherein distributes automatically in base station system and Serving GPRS Support Node and registers new Network entity identifier.

Another object of the present invention is to provide the mode of the interface between configurating base station system and the Serving GPRS Support Node, wherein not only in the data structure of base station system and Serving GPRS Support Node, distribute automatically and register new Network entity identifier, also need to detect automatically new Network entity identifier.

The overall benefit that the present invention provides is effective and efficient manner more can be provided, and the interface between configuration service GPRS Support Node and the base station system particularly uses the such interface based on IP communication.

The special benefit that the present invention provides is to alleviate the manual operation of following various tasks and safeguards load, comprising distributing new Network entity identifier, and guarantee that this identifier is unique in Serving GPRS Support Node, and in base station system and Serving GPRS Support Node, register new Network entity identifier.

With reference now to example embodiment,, and with reference to the accompanying drawings, the present invention is described in further detail.

The accompanying drawing summary

Fig. 1 is the synoptic diagram that the PLMN configuration of GPRS is supported in explanation;

Fig. 2 is the block diagram of the Gb Interface between present SGSN of explanation and the BSS;

Fig. 3 is the block diagram of the Gb Interface of the process modification of explanation between SGSN that supports IP and BSS;

Fig. 4 is the flow chart of explanation according to basic skills of the present invention;

Fig. 5 is the synoptic diagram that adopts demonstration cellular network of the present invention;

Fig. 6 is the signaling diagram of explanation grouped data cell configuration;

Fig. 7 is the block diagram of the management area data record in the explanation wireless network server;

Fig. 8 illustrates the block diagram of the cell configuration data record in the wireless base station;

Fig. 9 is the block diagram of the NSEI data record in the explanation gateway;

Figure 10 is the block diagram of the SGSN NSEI data record among the explanation SGSN.

The detailed description of embodiment

GPRS (GPRS) is the standard of the grouped data in the relevant gsm system of ETSI (ETSI).GPRS is also accepted by Telecommunications Industries Association (TIA), as the packet data standard of TDMA/136 system.Functional by being public land mobile network (PLMN) interpolation GPRS, operator can allow its user with the resource effective and efficient manner, is linked into the network of outside internet protocol-based (IP).

Controlled by the ability and the carrier-in-interference of portable terminal, GPRS can provide the air interface transfer rate up to 115kbit/s.When introducing so-called EDGE technology (being the enhancing data rate of GSM and TDMA/136 evolution), even can also provide higher transfer rate.And GPRS allows several users to share identical air interface resource, and makes that operator can be according to the transmitting data stream amount, rather than the user is collected the expense of wireless service according to the connect hours.

The public land mobile network (PLMN) of supporting GPRS has been described, i.e. the configuration of cellular network among Fig. 1.Compare with traditional GSM network, GPRS introduces two new nodes that are used to handle Packet Service, i.e. Serving GPRS Support Node (SGSN) and Gateway GPRS Support Node (GGSN).These nodes all with attaching position register (HLR), mobile switching center (MSC/VLR) and base station system (BSS) interworking.

GGSN as the packet data network interconnection point is connected to SGSN through the IP backbone.User data (for example data from the GPRS terminal to the Internet) is packed, sends through IP is key.

Conversely, SGSN is connected to BSS again, and is in hierarchical level other places identical in the network with MSC/VLR.It follows the tracks of GPRS user's position, carries out safety function, and handles access control, and promptly to a great extent, it carries out MSC/VLR for Packet data service is the performed function of circuit-switched service.

Interconnection BSS and SGSN have been described among Fig. 2, have allowed the so-called Gb Interface of exchange signalling information and user data.

From Fig. 2 top, logic link control (LLC) protocol layer 201 provides reliable logical links between the travelling carriage of SGSN and work in SGSN provides the zone (being SGSN area) of service.LLC agreement 201 ends at travelling carriage and SGSN, and therefore it is transparent concerning BSS.

The major function of BSS GPRS agreement (BSSGP) layer 202 is provided at exactly and sends desired wireless relevant QoS of user data and routing iinformation between BSS and the SGSN.In BSS, it is as the interface between logic link layer control (LLC) protocol Data Unit (being the LLC frame) and Radio Link control/medium access control (RLC/MAC) piece.In SGSN, it can constitute the interface between RLC/MAC derivation information and the LLC frame.In GSM 08.18 standard, can find other details of BSSGP layer 202.

Network (NS) protocol layer 203 is realized the link layer of osi model.The NS layer is based on frame relay (FR), and provides Network for BSS GPRS agreement (BSSGP) layer.It allows to transmit BSSGP protocol Data Unit (PDU) in an orderly manner with non-reliable fashion, and promptly under unusual environment, PDU may lose, and can not keep the correct order of PDU.In GSM 08.16 standard, can find other details of Network layer 203.

Can utilize for example E1 or T1 transmission line, implement physical layer 204.

In the PLMN that supports GPRS, utilize IP network to interconnect between SGSN and the GGSN node, and SGSN is to utilize frame-relay network to be connected with the BSS node at present.Therefore Virtual network operator needs to make up, operates and safeguard IP network and frame-relay network.Preferably Virtual network operator only need be implemented IP network, and helps adding in Gb Interface the IP support like this.

Be when adding the IP support in the Gb Interface, in order to reduce influence to greatest extent to existing capability, and allow can to coexist based on IP with based on the Gb Interface of frame relay, therefore wish to revise the BSSGP protocol layer as few as possible, and preferably the BSSGP protocol layer is not made amendment.

In the BSSGP protocol layer, the notion of a key is exactly the virtual connection of so-called BSSGP (BVC) that communication path is provided between the BSSGP functional entity.Each BVC is used to transmitting BSSGP PDU between equity point-to-point (PTP) functional entity, between reciprocity point-to-multipoint (PTM) functional entity and between the reciprocity signaling capability entity.

The PTP functional entity is responsible for the PTP user data transmission.In each sub-district, there is a PTP functional entity.

The PTM functional entity is responsible for the PTM user data transmission.Only there is a PTM functional entity in each Network entity, and in each BSS, has one or more Network entities.

The signaling capability entity is responsible for for example other function of paging.Only there is a signaling entity in each Network entity, and in each BSS, has one or more Network entities.

Each BVC can be discerned by BSSGP virtual connection identifier (BVCI), and BVCI has the meaning end to end of crossing over Gb Interface.In the Network protocol layer, each BVCI also is unique in two peer-to-peer network Business Entities (NSE).Each Network entity can be identified by Network entity identifier (NSEI).NSEI identifies interior virtual a connection of BSSGP of SGSN jointly uniquely with BVCI.BVCI value 0 is illustrated in provides the BVC BSSGP of communication virtual connection between the reciprocity signaling capability entity, BVCI value 1 is illustrated in provides the BSSGP of communication virtual connection between the reciprocity PTM functional entity, BVCI then is illustrated in greater than 1 value the BSSGP of communication is provided between the reciprocity PTP functional entity virtual connection.

When adding the IP support, in order to minimize influence, need keep the notion of BVC to the BSSGP protocol layer, and because the unique identification of BVC requires the combination of BVCI and NSEI, so Gb Interface must continue to support the use of BVCI and NSEI.

Support IP has been described among Fig. 3, has kept the example embodiment of passing through the Gb Interface of revising of BVC notion simultaneously.

LLC protocol layer 201 and BSSGP protocol layer 202 are identical with corresponding protocol layer among Fig. 2.

A New Deal layer, i.e. Network on the IP (NSOIP) 303 has replaced original NS protocol layer 202.NSOIP protocol layer 303 is suitable for BSSGP protocol layer 202 the identical business that is substantially similar to original NS protocol layer 203 is provided, but is to provide on the basis of business in the IP-based communication service of bottom, and no longer based on frame relay.Like this, NSOIP protocol layer 303 can be taken as NS protocol layer simulator.NSOIP protocol layer 303 is realized one group of corresponding PDU of each PDU that is realized with original NS protocol layer 203, but the PDU that NSOIP protocol layer 303 is realized comprises an additional NSEI information element.Compare with original NS protocol layer 203, another difference is NSOIP protocol layer 303 realization ordering mechanisms, to guarantee receiving the NSOIP PDU that exchanges with the order identical with transmission in two peer-entities.Perhaps, the NSOIP agreement can be moved on transmission control protocol (TCP), and owing to TCP guarantees to receive data according to the order identical with transmission, so the NSOIP agreement then no longer needs to realize ordering mechanism.

Be under the NSOIP protocol layer 303 protocol layer 304-306 all with generally acknowledge that known IETF structure is consistent.Datagram protocol (UDP) is used to transmission protocol layer 304, and the Internet (IP) agreement is used to internet layer 305, and physical layer 306 can be based on for example ATM or SDH/SONET.

A problem of existing Gb Interface based on frame relay is exactly: need to adopt management devices to carry out the configuration of the virtual connection of Network, promptly require artificial intervention.Particularly, the operation and maintenance personnel must manually determine when to be needed to distribute new NSEI value, and utilizes artificial process, also must guarantee the uniqueness of new NSEI value in SGSN.This is a very loaded down with trivial details process, if the particularly different operation and maintenances of organizing responsible respectively SGSN and base station system is then all the more so.

The present invention addresses the problem: provides and disposes Gb Interface more flexibly, and the method for particularly utilizing the Gb Interface of communicating by letter based on IP.

Fig. 4 explanation is according to the present invention, in the communication network of supporting GPRS, and the basic skills of the interface between configuration service GPRS Support Node and the base station system.

In step 401, request distributes new Network entity identifier.

In response to this request, according to guaranteeing new Network entity identifier unique pre-defined rule in Serving GPRS Support Node, distribute new Network entity identifier automatically in step 402.

In step 403,, begin this data structure automatically by in the data structure of Serving GPRS Support Node and base station system, registering the new Network entity identifier that is distributed.

New, SGSN unique N SEI value that basic skills according to the present invention is provided for distributing, and make the automated procedure of in SGSN and base station system, learning this new NSEI value.

In response to clearly request, and start the step of asking new Network identifier allocation from the new Network entity identifier of operation and maintenance personnel's distribution.Configuration new grouped data sub-district in the base station system that coexists and detecting automatically when needing to distribute new Network identifier starts the step that request distributes new NSEI automatically yet in a preferred embodiment of the invention.

The example embodiment of the cellular network 501 that adopts support GPRS of the present invention has been described among Fig. 5.Comprise SGSN node 502, IP network 503 and base station system 504 in the cellular network 501.

Comprise gateway (GW) 505 in the base station system 504, search server 506, wireless network server (RNS) 507,508 and three wireless base stations of subnet manager (SNM) (RBS) 509-511.All node 505-511 in SGSN node 502 and the base station system 504 are connected to IP network 503, and promptly the communication between the different nodes all is based on IP's among Fig. 4.

Subnet manager 508 is operation and maintenance nodes, make cellular network operator can the management of base station system all devices in 504.

Wireless network server 507 is handled the service control function in the base station systems 504, and for example the distribution of the resource of (flush) is cleaned in the distribution of paging and being used for.In the data in being stored in wireless network server 507, there is the data structure be used to preserve the relevant data in the management area that defined with base station system 504.

The management area is exactly one group of sub-district, and wherein all sub-districts are all relevant with an identical NSEI, promptly utilizes identical NSEI value to discern the BVC that is correlated with in the sub-district in the management area.To can determine just how the sub-district is consisted of the management area up to Virtual network operator.A management area can be for example corresponding to one or more bands of position or Routing Area.If add additional wireless network server in base station system 504, then for suitable Load distribution is provided in the different networks server, the management area that each wireless network server can be defined to one or several definition provides service.Virtual network operator also can go to decision definition management area according to following scheme: make that promptly each management area all is the suitable area of responsibility that is assigned to the Virtual network operator operation and keeps certain unit in the tissue.

Illustrated among Fig. 7 in the wireless network server 507 and to have used, be used to preserve the exemplary data structure of management area related data.Comprise in the management area record 701 that one is used for the identification field 702 of storage administration area identification, the NSEI territory 703 that is used for the relevant NSEI value in storage and management zone and the BVCI value list 704 that is used to be stored as the defined BVCI value in management area.

Among the wireless base station 509-511 each can both provide service for one or more sub-districts.Comprise in each wireless base station being used for to providing the travelling carriage operated in the sub-district of service to send wireless signal in the wireless base station, and therefrom receive the transceiver of wireless signal.Comprise in the performed function of wireless base station 509-511 that RLC/MAC handles and chnnel coding.

In the data in being stored in each wireless base station 509-511, exist to comprise the data structure that the relevant configuration data in each sub-district of service is provided with the wireless base station.The exemplary data structure of using among the wireless base station 509-511, be used to store cell configuration data has been described among Fig. 8.Comprise NSEI territory 802, BVCI territory 803, cell ID territory 804, location area territory 805, Tracking Area Identifier territory 806 in the cell configuration data record 801.NSEI territory 802 and the BVCI territory 803 identifications BVC relevant with this sub-district.

Between base station system 504 and the SGSN node 502 all are communicated by letter and all will be passed through gateway 505.Signal format conversion between the signal format that signaling is used in gateway 505 responsible execution signal formats that interior signaling uses in base station system 504 and the Gb Interface between base station system 504 and SGSN node 502.For the signal (being message) that sends to base station system 504 from SGSN node 502, gateway 505 is on the basis that embeds from BVCI in the signal of SGSN node 502 and NSEI value, implement the signal distributions function, the information in the signal is distributed in the base station among wireless network server 507 or the wireless base station 509-511.In the data of gateway 505 stored, exist data structure to be used to preserve data with the signal correction that receives from SGSN node 502 of should how distributing.A kind of example of possible signal distributions data structure has been described among Fig. 9.Comprise the tabulation 903 of NSEI territory 902 and the definition BVCI value and the IP address of being correlated with in the NSEI record 901, wherein all the IP address with one of wireless network server 507 or wireless base station 509-511 is relevant for the BVCI value of each definition.Like this, NSEI record 901 just can control gateway 505 distribute the information that receives from SGSN node 502 to which node.

Search the various locating functions of realizing being similar to IETF name server (DNS) in the server 506.For example, it provides the Hostname of different nodes in the base station system 504 and is assigned to translation between these IP addresses of nodes.

Should be noted that, only provide those among Fig. 5 and be considered to explain element essential to the invention, and therefore adopt and comprise the node type that provides in Fig. 5 of greater number in the cellular radio communication network of the present invention, and the node of other type, for example Gateway GPRS Support Node, attaching position register or the like.

Fig. 6 provides its signaling sequence in the example scenario of explanation according to first embodiment of the inventive method.

The moment of this scene first grouped data sub-district the new management zone in should disposing SGSN node 502 coverages begins.Noticed that before scene begins different nodes has been configured to handle basic IP communication all according to the standard procedure of configuration of IP network host.

The operation and maintenance personnel are by providing desired configuration parameter to subnet manager 508, and order subnet manager 508 goes to realize configuration, and start the configuration of grouped data sub-district.Subnet manager 508 sends configuration packet data cell signal S601 to wireless network server 507.Comprise in this signal the new management zone sign (for example text-string in " Sweden-western part "), cell ID, location area, Tracking Area Identifier, will be relevant with the first grouped data sub-district in the new management zone the BVCI value and should be the wireless base station (for example first wireless base station 509) of sub-district service and the sign of wireless base station antenna sector.

Wireless network server 507 receives configuration packet data cell signal S601, and defines the management area before whether checking.It is new region that wireless network server 507 can recognize the management area, and begins a management area record (see figure 7) that is used to preserve the management area related data.Wireless network server 507 also recognizes automatically and need be the new NSEI value of new management region allocation, and sends the BVC signal S602 that resets to gateway 505.Resetting comprises among the BVC signal S602 and is set to 0 BVCI territory, and the NSEI territory that is set to null value.The NSEI null value is a retention, will never designatedly be used as the NSEI value.For example, it can be provided as numerical value 65535.The NSEI null value is the expression that request distributes a new NSEI value.

Gateway 505 receives the BVC signal S602 that resets, and according to the NSEI null value in NSEI territory, the request of can recognizing distributes new NSEI value.Gateway 505 is unknown so far new NSEI record (see figure 9) of new NSEI value beginning, and in new NSEI record, imports the BVCI value 0 relevant with the IP address of wireless network server node 507.Gateway 505 sends BSSGP BVC reset signal S603 to SGSN node 502.Comprise BVC replacement PDU among the BSSGP BVC reset signal S603, comprising the BVCI information element that is set to 0.BVC replacement PDU is encapsulated among the interior NSOIP-UNITDATA PDU of BSSGP BVC reset signal S603.Except additional NSEI information word prime field, the form of NSOIP-UNITDATA PDU is substantially similar to the form of the NS-UNITDATA PDU of regulation among the GSM 08.16.NSEI information word prime field is set to the NSEI null value.

SGSN node 502 receives BSSGP BVC reset signal S603, and according to the NSEI null value of the NSEI information word prime field in the NSOIP-UNITDATA PDU part of signal, recognizing this signal is the request that distributes new NSEI value.SGSN node 502 recognizes the request that this signal is still carried out the BVC reset process of signaling BVC (being that BVCI gets 0) simultaneously also according to BVCI information word prime field.

SGSN node 502 distributes new NSEI value automatically according to guaranteeing new NSEI unique pre-defined rule in SGSN node 502.SGSN node 502 can for example be selected new NSEI value by following plain mode, and promptly the NSEI value list to current use scans, and distributes first available NSEI value.Those skilled in the art will recognize that and to use any Else Rule that distributes unique NSEI.After distributing new NSEI value, SGSN node 502 generates the data structure that is used to preserve the configuration data relevant with new NSEI value automatically, and the IP address of registering new NSEI value and gateway 505 in data structure.

Figure 10 has illustrated the data structure instance that is used to preserve NSEI value related data.Comprise NSEI territory 1002 in the SGSN NSEI data record 1001, and to each value is 2 or greater than the BVCI (i.e. the definition BVC relevant with the sub-district) of 2 definition, also comprises BVCI territory 1003, cell ID territory 1004, territory, the band of position 1005, Routing Area territory 1006 and IMSI list pointer territory 1007.The IMSI list of numbers 1008 of the current travelling carriage of operating of expression is pointed in IMSI list pointer territory 1007 in the BVCI related cell.

Be new NSEI value beginning SGSN NSEI data record 1001, promptly generating SGSN NSEI data record 1001 and NSEI territory 1002 is set to after the selected new NSEI value that SGSN node 502 is to gateway 505 transmission BSSGP BVC replacement answer signal S604.Comprise BVC replacement response PDU among the BSSGP BVC replacement answer signal S604, comprising the BVCI information word prime field that is set to 0.BVC replacement response PDU is encapsulated among the NSOIP-UNITDATA PDU among the BSSGP BVC replacement answer signal S604.The NSEI information word prime field of NSOIP-UNITDATA PDU is set to the new NSEI value that SGSN node 502 is distributed.

Gateway 505 receives BSSGP BVC replacement answer signal S604, and inserts new NSEI value in the new NSEI record that formerly generates.Then, gateway 505 and 502 execution of SGSN node are similar to the NS replacement of regulation among the GSM 08.16 and the NSOIP replacement and the releasing process of releasing process.The term of execution of the NSOIP reset process, gateway 505 sends NSOIP reset signal S605 to SGSN node 502, and receive NSOIP replacement answer signal S606 from SGSN node 502, and the term of execution of the NSOIP releasing process, SGSN node 502 sends NSOIP unlocking signal S607 to gateway 505, and receives NSOIP release answer signal S608.Because the NSOIP agreement is not distinguished different virtual connections, therefore all comprise a NSEI information element in the NSOIPPDU that in NSOIP replacement and releasing process, relates to, but do not comprise virtual connection identifier.Carry out that NSOIP resets and releasing process after, just can learn new NSEI value, and in base station system 504 and SGSN node 502, be registered to release.

Then, gateway 505 sends registration signal S609 to searching server 506, and request is searched the new NSEI value of server 506 registrations for relevant with the IP address of gateway 505.The IP address that comprises new NSEI value and gateway 505 among the registration signal S609.Search server 506 then and correspondingly carry out registration.

Gateway 505 also sends replacement BVC answer signal S610 to wireless network server 507.Comprise BVCI territory that is set to 0 and the NSEI territory that is set to new NSEI value in this signal.Wireless network server 507 is being that the new NSEI value of registration in the (see figure 7) is write down in the management area that preservation new management Regional data is prepared originally.

Wireless network server 507 sends allocating cell signal S611 to first wireless base station 509 then.Comprise wireless base station antenna sector mark, cell ID, the band of position, Tracking Area Identifier and the wireless network server 507 BVCI value from the configuration packet data cell signal S601 that subnet manager 508 receives in the past among the allocating cell signal S611.Also comprise among the allocating cell signal S611 with this sub-district under the relevant new NSEI value in new management zone.

First wireless base station 509 receives allocating cell signal S611, and begin new cell configuration data record (see figure 8), the configuration data that wherein possesses the new grouped data of definition sub-district, i.e. cell ID, location area, Tracking Area Identifier, BVCI value and NSEI value.First base station 509 sends search request signal S612 to searching server 506 then, request and the new relevant IP address of NSEI value.Search server 506 and return to first wireless base station 509 and search response signal S613, comprising the IP address of gateway 505.BVC reset process 509 is continued to start by send replacement BVC signal S602 to gateway 505 in first base station 509.Comprise the cell configuration data that is stored in the new sub-district in the new cell configuration data record among the replacement BVC signal S602, i.e. NSEI value, BVCI value, cell ID, location area and Tracking Area Identifier.

Gateway 505 receives replacement BVC signal S602, and removes to upgrade the NSEI record that is identified by NSEI value in this signal with the relevant IP address of the BVCI value that comprises and first base station 509.Gateway 505 sends BSSGP BVC reset signal S603 to SGSN node 502.Comprise BVC replacement PDU among the BSSGP BVC reset signal S603, comprising the cell configuration data of new sub-district.BVC replacement PDU is encapsulated among the NSOIP-UNITDATA PDU, comprising the NSEI information word prime field according to the NSEI value setting of new sub-district.

SGSN node 502 receives BSSGP BVC reset signal S603, and according to the NSEI value that receives, recognizes the SGSN NSEI data record (see figure 10) relevant with the NSEI value.SGSN node 502 is used in the cell configuration data of the new sub-district that receives in the BSSGP BVC reset signal, goes to upgrade SGSN NSEI data record, and returns BSSGP BVC replacement answer signal S604 to gateway 505.

Gateway 505 receives BSSGP BVC replacement answer signal S604.Gateway is according to the NSEI of received signal S604 and BVCI information field and be stored in relevant NSEI record in the gateway 505, discerns the IP address of first base station 509, and sends replacement BVC answer signal S610 to first base station 509.

First base station 509 receives replacement BVC answer signal S610, and comprises the NSEI that the sub-district is relevant and the allocating cell response signal S614 of BVCI value by transmission, notifies wireless network server 509 new sub-districts to be configured.

Wireless network server 507 receives allocating cell response signal S614, and recognizes new sub-district and be configured.Wireless network server 507 sends configuration packet data sub-district response signal S615 to subnet manager 508 then.Signal S615 comprises the sign in new management zone and the BVCI relevant with new sub-district.

Subnet manager 508 receives configuration packet data sub-district response signal S615, and the new sub-district that recognizes in the new management zone is correctly disposed.The indication that subnet manager 508 can provide new sub-district correctly to be disposed for the operation and maintenance personnel.

Except above-mentioned the present invention demonstrates first embodiment, also exist some kinds of methods that first embodiment is redesigned, revises and replaces, and obtain other embodiments of the invention.

Replace utilizing and comprise that the BSSGPBVC reset signal S603 of BVC replacement PDU and NSOIP-UNITDATA PDU asks to distribute new NSEI value (promptly comprising the request for allocation of new NSEI value and the execution of BVC reset process), also can adopt independent signal to ask the distribution of new NSEI value and the execution of BVC reset process.The NSOIP agreement can comprise distribution NSEIPDU and distribute the NSEI response PDU like this.Gateway 505 can comprise that NSOIP distributes the NSOIP of NSEI PDU to distribute the NSEI request signal by transmission then, ask to distribute new NSEI, and SGSN node 502 can return the new NSEI value that is assigned with in NSOIP distribution NSEI answer signal, be included in the NSOIP that transmits the new NSEI value of being distributed in the NSEI information element in this signal and distribute the NSEI response PDU.Then, send BSSGPBVC reset signal S603 from gateway 505 to SGSN node 502, request is for the execution of the BVC reset process of the BVC that is identified by new NSEI value and BVCI value 0.Interior signaling in the base station system 504 between wireless network server 507 and the wireless network server 509 can keep with in company with Fig. 6 identical in preceding description, promptly, gateway 505 is in response to receiving replacement BVC signal S602 (comprising the NSEI null value), send NSOIP and distribute the NSEI answer signal, and after receiving NSOIP distribution NSEI answer signal, send BSSGP BVC reset signal.Perhaps, wireless network server 507 can send independent signal to gateway 505, is used to ask NSOIP to distribute the transmission of NSEI request signal and BSSGP BVC reset signal.

Can be by the Network entity identifier manager that is included in the Serving GPRS Support Node, perhaps independent Network entity identifier manager node is handled the distribution of new NSEI value.

Different schemes can be used to make that to send to the request signal (for example BSSGP BVC reset signal or NSOIP distribute the NSEI signal) of SGSN node 502 from base station system 504 relevant with the response signal that sends to new NSEI value base station system 504, that transport a distribution from SGSN node 502 (for example BSSGP BVC replacement answer signal or NSOIP distribution NSEI answer signal).A kind of optional method is exactly to limit the not request of the new NSEI value of any distribution of deactivation of wireless network server 507 simply, receive the affirmation that has distributed new NSEI value up to it for last request, promptly guarantee at any given time, can not have request more than a new NSEI value of uncompleted distribution.Another kind of optional method is exactly to distribute the signal of new NSEI and introduce transaction identifiers in the response signal accordingly in request.Transaction identifiers preferably is used in the base station system internal signal, and in the signal of exchange between base station system 504 and the service SGSN node 502.Gateway 505 can be carried out the mapping between the transaction identifiers that uses in the signal of exchange between base station system 504 internal affairs identifiers and base station system 504 and the SGSN node 502.

Certainly, the present invention can be applied to possessing in the cellular network of other base station system structure outside the demonstration structure of setting forth among Fig. 5.A kind of possible example of optional base station system structure just is based on traditional GSM BSS structure of the base station controller (BSC) of a plurality of wireless base stations of control.

Claims

1. the method for the interface between configuration service GPRS Support Node (502) and the base station system (504) in supporting the communication network (501) of GPRS comprises the steps: in this method

Request (401) distributes new Network entity identifier;

According to guaranteeing new Network entity identifier unique pre-defined rule in Serving GPRS Support Node (502), distribute (402) this new Network entity identifier automatically;

New Network entity identifier by registration in the data structure (1001,701,801,901) of Serving GPRS Support Node (502) and base station system (504) is distributed begins (403) this data structure automatically.

2. send signal (S603) according to the process of claim 1 wherein that this request step (401) comprises to Network entity identifier manager (502).

3. according to the method for claim 2, wherein Network entity identifier manager is comprised in the Serving GPRS Support Node (502).

4. according to the method for claim 3, wherein send this signal (S603) to Serving GPRS Support Node (502) from base station system (504).

5. according to method any among the claim 2-4, wherein comprise the Network entity identifier information element that is set to represent ask the value of distribution network Business Entity identifier in this signal (S603).

6. according to method any among the claim 1-4, comprise also in the method that wherein automatic detection distributes the step of the demand of new Network entity identifier, and after this detects, start this request step (401) automatically.

7. according to the method for claim 6, wherein carry out this detection step with the new grouped data of configuration sub-district in the base station system that coexists (504).