CN100428843C - Broad band mobile cut-in net system and its method - Google Patents
Broad band mobile cut-in net system and its method Download PDFInfo
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- CN100428843C CN100428843C CNB2004101010187A CN200410101018A CN100428843C CN 100428843 C CN100428843 C CN 100428843C CN B2004101010187 A CNB2004101010187 A CN B2004101010187A CN 200410101018 A CN200410101018 A CN 200410101018A CN 100428843 C CN100428843 C CN 100428843C
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Abstract
The present invention relates to broadband wireless access technology and discloses a broadband mobile access network system and a method thereof, so that the system frame of the broadband mobile access network can satisfy the requirements of the expansion of the network size and the performance improvement, can conveniently integrate with other networks, and does not depend on specific wireless air interface types. The present invention uses the existing network resources to establish a broadband mobile access bearer network, and on the basis, a BMNC and a BMAG are arranged according to the principle that a bearing surface and a control surface are separated, and a plurality of APs are controlled to form a network, wherein the BMNC is the core of the control surface and is used for network control, and the BMAG is the core of the bearing surface and is used for routing data flow. In addition, the present invention also comprises an AS used for identifying the user access identity and an NMS used for network management. The present invention also realizes the networking connection among the entities and among the levels through VLANs or IP connection, and then realizes level isolation, user isolation or service isolation.
Description
Technical field
The present invention relates to wireless access wide band technology, particularly broad band mobile cut-in net system and method thereof.
Background technology
Along with the communication technology develops to individualized, mobile, broadband direction gradually, mobile technology, wireless technology, broadband technology and multimedia communication technology gradually become the research hot spot technology.Except merging for the construction of core net, Access Network will be one of bottleneck of limiting network performance boost.Therefore wireless access wide band technology is one of key technology of next-generation communication network development.Access technology by wired, wireless or fixing, move can be divided into multiple.
Wireless access is meant the access technology that partly or entirely adopts wireless means from the switching node to the user terminal.Wireless access system has advantages such as the networking expense is low, dilatation can be decided as required, operating cost is low, so can be used as replenishing of wired network in developed regions, can in time substitute out of order wired system rapidly or the short-term occasional service is provided; In development or the outlying district can be widely used for replacing the wire user loop, save time and invest.Wireless access technology is divided into mobile the access and the fixing two big classes that insert.
Mobile broadband wireless inserts present stage and mainly is meant the 3G (Third Generation) Moblie technology, and this technology can realize the broadband access under the mobile status, but in following access speed difference that can provide of different translational speeds.Mobile access can be divided into again and inserting at a high speed and low speed inserts two classes, and high-speed mobile inserts general available cellular system, satellite mobile communication system, group system and waits and realize; And the low speed connecting system can be realized with PCS Personal Communications System.
Fixedly access is meant and adopts wireless access from the switching node to the fixing user terminal, it is actually public switched telephone network (Public Switched Telephone Network, be called for short " PSTN ")/the wireless extension of integrated services digital network (Integrated Services Digital Network is called for short " ISDN ").Main fixed wireless access has three classes, the multichannel multiple spot distribution service that has promptly come into operation (Multi-channel Multi-point Distribution Service, be called for short " MMDS ") and fixed satellite insert and just risen and just become the emerging broadband access technology Local Multipoint Distribution System (Local Multi-point Distribution Service, abbreviation " LMSD ") of focus.
Broadband wireless technical development at present is rapid, various broadband wireless technology occurred, to satisfy the application need of WLAN (wireless local area network), wireless MAN, Wireless Personal Network etc.The broadband wireless technology has presented a kind of diversified development trend.From the whole world, with international electronics and (the InstituteElectrical and Electronics Engineers of The Institution of Electrical Engineers, abbreviation " IEEE ") 802.11 series standards are Wireless Fidelity (the Wireless Fidelity on basis, abbreviation " Wi-Fi ") clone has become the WLAN (wireless local area network) main flow of (Wireless Local Area Network is called for short " WLAN ").Also obtain the extensive support and the participation of industry in addition based on the Wi-MAX of IEEE802.16 series standard, might develop into the standard of the fixing and wireless mobile access of industry metropolitan area broadband wireless.Operator is also carrying out in a deep going way based on the operation of these broadband wireless technology test, for example: the WLAN focus insert operation, blue tooth voice and WLAN voice, metropolitan area cover, with the fusion of cellular mobile network etc.
Broadband service is an inevitable development trend from wired to wireless, from being fixed to mobile.The wired connecting system of broadband fixed comprises digital subscriber line (Data Subscriber Line is called for short " xDSL "), optical cable (CABLE), local area network (LAN) access means such as (Local Area Network are called for short " LAN ").The broadband fixed wireless connecting system then adopts wireless means to replace wired means such as xDSL, and the terminal equipment of access is still fixed.The broadband is moved connecting system and is then allowed terminal equipment to pass through wireless access when mobile, and also natural certainly support terminal is with fixed station mode connecting system, such as WLAN, bluetooth etc.
Fixedly access technology is comparatively ripe, and general broadband fixed Access Network (comprising wired or wireless access system) architecture is shown in Fig. 1 (a).BAS Broadband Access Server (Broadband AccessServer wherein, be called for short " BAS ") be equivalent to Access Layer service convergence equipment at the user data face, the management chain of command then with rear end relevant authentication, authorization and accounting (Authentication Authorization andAccounting Server, be called for short " AAA Server ") the server cooperation, finish fixed terminal user's access control management, comprise access identity authentication, safety, charging etc.
Move connecting system for the broadband, also do not have the architecture of a maturation at present.Compare with fixing the access, the problem that the needs solution of access is moved in the broadband mainly is the mobile management and the RRM of portable terminal.Mobile management refers to that mainly the user can seamlessly switch to the area of coverage of another adjacent AP and can keep professional not interrupting and continuity from an access point (Access Point is called for short " the AP ") area of coverage; The scheduling that RRM relates to wireless continuous covering beehive net parameter configuration and Radio Resource distributes, and for example can accomplish load sharing in the zone of the overlapping covering of a plurality of wireless channels.In addition, what also need to consider is to move to insert after coverage increases, and the solution of network size when the quantity of AP reaches certain scale, must adopt network mode to carry out networking, could realize efficiently, the mobile access of high speed.After networking, further to solve be exactly and existing network between integration program, if and provide based on the Internet protocol service of (Internet Protocol is called for short " IP ") for portable terminal (Mobile Terminal is called for short " MT ") by existing network.
At present more existing standards begin to attempt to solve RRM problem and the mobility problem that runs in the WLAN networking.Mainly contain two kinds of solutions, based on the communication mechanism between AP and centralized control and management framework.
According to IEEE 802.11f draft, defined the protocol frame of communicating by letter between an AP, i.e. communication protocol (Inter Access Point Protocol is called for short " IAPP ") between AP.Based on this agreement, can solve the seamless switching problem that MT strides AP.This method has defined interactive communication process between the AP that relates to when a MT is associated with AP or re-associates to AP, simultaneously in order to guarantee the secure communication between the AP, on infrastructure, increased a far-end access dial user service (RemoteAccess Dial-In user Service at the IAPP service, be called for short " RADIUS ") server, AP at first will pass through the Radius agreement after powering on, be registered to the Radius server.An AP can be according to WLAN basic service set identification (Base Service Set Identity, be called for short " BSSID ") find the IP address of corresponding AP from the Radius server, just can communicate based on the IP layer then, the communication encryption material also obtains from the Radius server.For supporting these functions IEEE 802.11f that the Radius agreement has been done many expansions.Fig. 1 (b) shows based on the broadband of IAPP and moves access system structure.
What this scheme was the most basic a bit is that mobile subscriber's access control correlation function is all realized on AP, when network reaches certain scale, for effective configuration of a large amount of AP with safeguard serious limiting network performance and development.Therefore, centralized control that proposes afterwards and management framework are wished exactly by with in-migration head it off on the function of AP top.
Centralized control and management framework typical scenario are exactly that part producer has proposed a kind of Lightweight AP architecture, be about to AP and go up medium access control (Media Access Control, abbreviation " MAC ") the layer segment function focuses on the switch of upper level, it is the Wi-Fi switch, or router, it is couple in router (Access Router is called for short " the AR ") realization of getting on.The Internet engineering duty group (INTERNETENGINEERING TASK FORCE, the control and management agreement (the Control and Provisioning of Wireless Access Point of WAP (wireless access point) abbreviation " IETF "), abbreviation " CAPWAP ") working group has done summary to the WLAN centralized architecture, be summed up as three class frameworks: far-end (RemoteMAC), separate (SPLIT MAC), local (Local MAC), three kinds of MAC handle structure, and the Wi-Fi switch of upper level or couple in router be referred to as access controller (AccessController is called for short " AC ").Remote MAC is that the MAC function of AP all moves on to upward realization of AC, and SPLIT MAC promptly refers to move on to insensitive part MAC function of time AC and goes up realization, and Local MAC is the MAC layer function or terminates in AP, but controlled by the management of AC.Lightweight AP is equivalent to SPLIT MAC framework, and relevant producer discloses a Lightweight AP agreement (Light-Weight AP Protocol is called for short " LWAPP ") to IETF.Fig. 1 (c) shows based on the broadband of LWAPP and moves access system structure.
The connecting system framework is moved in this broadband based on LWAPP; maximum benefit is to come management and control that AP is concentrated by AC; also bear the operation layer aggregation feature simultaneously; thereby move on to AC on the separating part function; make the network architecture be easy to management and expansion more; alleviated the crisis of Access Network networking difficulty to a certain extent, but on long-range, provide all also existing problems for network development and the network integration and IP operation.
The main deficiency of several solutions of target is, the group-network construction that the Access Network neither one is complete has seriously limited the network size expansion, merges with multiple network, the raising of access performance and providing of IP operation.In addition, existing scheme all is the specified scheme at WLAN, and this makes in the practical application operator must be subjected to concrete wireless technology and limits.Simultaneously, such scheme does not relate to and how to make up bearer network, how the bearer network resource is controlled, this all is necessary for the real system networking, if support one professional end to end except controlling to the resource of wave point, just require the network infrastructure side to provide the bearing capacity support according to business demand, and higher level service quality (Quality of Service, be called for short " QoS ") guarantee, user management etc.
In actual applications, there is following problem in such scheme: the Access Network scale enlarges, performance improves and the network integration all is restricted, and has dependence for wave point.
Cause the main cause of this situation to be, move the function complexity that AP need realize in the access system structure based on the broadband of IAPP agreement, network configuration is simple, can only realize communicating by letter between small-scale AP, and the limiting network scale enlarges; Move the communication of adopting a plurality of AP of AC centralized control in the access system structure based on the broadband of LWAPP, realize moving on among the AC on management function, the key-course, alleviated the pressure of subnetwork scale expansion, but because net structure, hierarchical structure are simple, can't realize comprehensive networking, have a strong impact on the lifting of network performance and the fusion between the network, simultaneously because the realization of the function of AC is also relevant with concrete air protocol, so the Access Network system has dependence for wave point.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of broad band mobile cut-in net system and method thereof, the architectural framework that makes the broadband move Access Network can satisfy the demand of network size expansion and performance boost, can be easily and the fusion of other networks, do not rely on concrete wireless air interface type.
For achieving the above object, the invention provides a kind of broad band mobile cut-in net system, comprise a plurality of portable terminals and mobile access point, described mobile access point is communicated by letter by air wireless interface with the described portable terminal in the institute coverage cell, described portable terminal is inserted described system, and described system also comprises:
The broadband Mobile Access Gateway is used to converge user traffic flow, safeguards that the Internet protocol of described portable terminal connects;
Broadband mobile access network controller is used to realize radio resource management function, user mobility management function, user access control function;
The broadband access bearer network is used to carry between the described mobile access point, the communication link between described broadband Mobile Access Gateway and the described mobile access point, between described broadband mobile access network controller and the institute's mobile access point.
Wherein, described system also comprises:
Certificate server is used for by the mobile access network controller process user access authentication request of described broadband, issues the customer service control strategy.
Described system also comprises:
Network management server is used to provide man-machine interface, by described broadband mobile access network controller to described broad band mobile cut-in net system equipment control and maintenance.
In described broadband access bearer network, chain of command separates networking with loading end.
Described chain of command between described mobile access point and the described broadband mobile access network controller carries out networking based on VLAN.
Described chain of command between described mobile access point and the described broadband mobile access network controller carries out networking by described broadband Mobile Access Gateway based on Internet protocol.
Described chain of command between different described mobile access points and the described broadband mobile access network controller is separated from each other networking.
Described chain of command between described broadband Mobile Access Gateway and the described broadband mobile access network controller carries out networking based on described VLAN.
Described chain of command between described broadband Mobile Access Gateway and the described broadband mobile access network controller carries out networking based on Internet protocol.
Described chain of command between different described broadband Mobile Access Gateways and the described broadband mobile access network controller is separated from each other networking.
Described loading end between described mobile access point and the described broadband Mobile Access Gateway carries out networking based on described VLAN.
Described loading end between different described mobile access points and the described broadband Mobile Access Gateway is separated from each other networking.
The described loading end that belongs to different described portable terminal is separated from each other networking.
The different described loading end that belongs to identical described portable terminal is separated from each other networking.
Described air wireless interface meets international institute of electrical and electronic engineers 802.11 standards, international institute of electrical and electronic engineers 802.15 standards or international institute of electrical and electronic engineers 802.16 standards.
Described mobile access point is supported two above less radio-frequency passages simultaneously, supports two or more air wireless interface, covers two above sub-districts, overlapping coverage cell.
Described broad band mobile cut-in net system is supported mobile IP, described portable terminal is initiated the mobile IP request, described broad band bearing network is realized the field network function, described broadband Mobile Access Gateway is realized foreign agent functionality, route to the ownership place local agent, described certificate server obtains user profile from ownership place authentication, mandate and record keeping server.
Described broad band mobile cut-in net system and mobile network circuit domain merge, described portable terminal is established to the voice-over ip business of multimedia gateway by described broadband Mobile Access Gateway, described broadband mobile access network controller is set up side carrying, described certificate server and attaching position register sharing users information according to the carrying request of setting up of mobile swap server.
Described broad band mobile cut-in net system and mobile network packet domain merge, and described broadband Mobile Access Gateway obtains packet switch domain service, described certificate server and described attaching position register sharing users information from packet data service network pass equipment.
Described broad band mobile cut-in net system and next generation network merge, described portable terminal is established to the voice-over ip business of media gateway by described broadband Mobile Access Gateway, and described broadband mobile access network controller is set up the side carrying according to the carrying request of setting up of soft switch.
Described broadband access bearer network is built on the basis of broadband fixed Access Network.
The present invention also provides a kind of broadband to move the Access Network method, is used for the described broad band mobile cut-in net system of claim 1, comprises following steps,
A mobile access point access band mobile cut-in net system;
B broadband mobile access network controller is related with described mobile access point foundation, and described broadband mobile access network controller is set up related with the broadband Mobile Access Gateway;
C provides broadband to move access service according to the association of described foundation to portable terminal by described mobile access point.
Wherein, described steps A comprises following substep,
Set up the physical connection of described mobile access point and system;
Setting up described mobile access point is connected with loading end with the chain of command of system other entities.
Described step B comprises following substep,
Set up related between described broadband mobile access network controller and the described broadband Mobile Access Gateway by static configuration;
Set up related between described broadband mobile access network controller and the described mobile access point by static configuration or dynamic-configuration.
Described step C comprises following substep,
Described portable terminal is communicated by letter with described mobile access point by air wireless interface;
Described mobile access point receives the Internet protocol traffic data by described broadband access bearer network;
Described broadband Mobile Access Gateway is finished the Internet protocol traffic route under the control of described broadband mobile access network controller.
Communicate by letter by air wireless interface between described portable terminal and the described mobile access point, communicate by letter by VLAN between described mobile access point and the described broadband Mobile Access Gateway, by the bridge joint effect of described mobile access point, set up the network layer Internet protocol between described portable terminal and the described broadband Mobile Access Gateway and be connected;
By the integrated control ﹠ management protocol communication, described integrated control ﹠ management agreement is carried by the VLAN passage between described mobile access point and the described broadband mobile access network controller;
Communicate by letter by gateway control protocol between described broadband Mobile Access Gateway and the described broadband mobile access network, described gateway control protocol is carried by the VLAN passage.
Described step C also comprises following substep,
Described portable terminal inserts described mobile access point, passes through authenticating user identification;
Described broadband mobile access network controller by described integrated control ﹠ management agreement to described mobile access point issuing service parameter;
Described portable terminal is initiated the internet protocol address request for allocation, is forwarded to described broadband Mobile Access Gateway by described mobile access point;
Described broadband mobile access network controller issues carrying by described gateway control protocol to described broadband Mobile Access Gateway and sets up parameter;
Described broadband Mobile Access Gateway is set up the internet protocol address that parameter is distributed described portable terminal according to described carrying.
Described step C also comprises following substep:
When described portable terminal when the different radio interchannel switches, switch relevant frame by unified all media access control layers of handling of described broadband mobile access network controller.
Described step C also comprises following substep,
When described portable terminal when the different radio interchannel switches, described mobile access point reports described broadband mobile access network controller, is judged whether to switch by described broadband mobile access network controller, and gives the Access Control Policy information of returning.
By relatively finding, the main distinction of technical scheme of the present invention and prior art is, the present invention utilizes conventional network resources to set up the broadband and moves access loading network, the principle that is separated according to loading end and chain of command is provided with BMNC, BMAG on this basis, with a plurality of AP control networkings, wherein BMNC is that to be used for network control, BMAG be that the core of loading end is used for the data flow route for the core of chain of command.Comprise the AS that is used for the authentication of user's access identity, the NMS that is used for network management in addition, realize broad band mobile cut-in net system by each entity collaborative work, connecting the networking that realizes on each inter-entity, each aspect by VLAN or IP connects, and then the isolation of realization aspect, user isolation or professional the isolation, divide the networking of realization wireless coverage by the sub-district, move the operation that the Access Network method realizes broad band mobile cut-in net system by the broadband, by the renewal that agreement is supported is gone up in each entity function expansion and MT, Access Network and other network integrations are moved in the realization broadband.Support to concrete air interface protocol is encapsulated among the AP, and an AP can support multiple air interface protocol.
Difference on this technical scheme, brought comparatively significantly beneficial effect, promptly because realized the framework that loading end and chain of command are separated, and present main flow backbone network, all adopted similar framework as NGN and mobile network etc., so can be fused to easily in these main flow backbone networks, make full use of their transfer resource.
In addition, the present invention sets up the broadband and moves the access loading network system on the conventional network resources basis, realized providing the function of IP operation for MT, enlarged mobile Access Network scale, improved the Access Network performance, reduced operation cost, for bandwidth operator provides one to make up system configuration and the method that Access Network is moved in unified broadband fixed Access Network and broadband; The networking of Access Network to entity and aspect moved in the broadband, realizes the isolation of control and data plane, improves network robustness, and the realization customer service is isolated, and realizes the QoS guarantee, made things convenient for the business development of operator, improved the flexibility that network upgrades; The networking of Access Network wireless coverage is moved in the broadband, has realized the seamless switching of the different radio interchannel of MT in service area; Simple extension by each entity function realizes the fusion that Access Network and other networks are moved in the broadband, strengthened the opening that Access Network is moved in the broadband, very big enriched the broadband and moves access service.
Because the support to concrete air interface protocol is encapsulated among the AP, AP can support a kind of or support multiple air interface protocol simultaneously, and AP interface of other entity in the system is constant, so, AP that can be by selecting different model for use is to realize the support to different air interface protocols, and the realization of whole system does not rely on concrete air interface protocol.
Description of drawings
Fig. 1 (a) is existing broadband access system structural representation;
Fig. 1 (b) is based on the broadband of IAPP and moves the connecting system structural representation;
Fig. 1 (c) is based on the broadband of LWAPP and moves the connecting system structural representation;
Fig. 2 is a broad band mobile cut-in net system architectural schematic according to an embodiment of the invention;
Fig. 3 (a) is the networking schematic diagram between AP and the BMNC in the chain of command business that the broadband is moved Access Network based on VLAN according to an embodiment of the invention;
Fig. 3 (b) is the networking schematic diagram between AP and the BMNC in the chain of command business that the broadband is moved Access Network based on IP according to an embodiment of the invention;
Fig. 3 (c) is the networking schematic diagram between BMNC and the BMAG in the chain of command business that the broadband is moved Access Network based on VLAN according to an embodiment of the invention;
Fig. 3 (d) is the networking schematic diagram between BMNC and the BMAG in the chain of command business that the broadband is moved Access Network based on IP according to an embodiment of the invention;
Fig. 4 (a) is a networking schematic diagram between the different AP in the data surface business that the broadband is moved Access Network based on VLAN according to an embodiment of the invention;
Fig. 4 (b) is a networking schematic diagram between the different MT in the data surface business that the broadband is moved Access Network based on VLAN according to an embodiment of the invention;
Fig. 4 (c) is a networking schematic diagram between same MT in the data surface business that the broadband is moved Access Network based on VLAN according to an embodiment of the invention dissimilar;
Fig. 5 is the wireless coverage networking schematic diagram that Access Network is moved in broadband according to an embodiment of the invention;
Fig. 6 (a) is that Access Network provides mobile IP service for MT fusion schematic diagram is moved in broadband according to an embodiment of the invention;
Fig. 6 (b) is that Access Network is moved in broadband according to an embodiment of the invention and the mobile network circuit domain merges schematic diagram;
Fig. 6 (c) is that Access Network is moved in broadband according to an embodiment of the invention and the mobile network packet domain merges schematic diagram;
Fig. 6 (d) is that Access Network is moved in broadband according to an embodiment of the invention and NGN merges schematic diagram;
Fig. 7 is that the interface schematic diagram between each entity of Access Network is moved in broadband according to an embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
The present invention moves the hierarchical system of Access Network by setting up complete broadband, comprise entities such as gateway, controller, mobile access point, certificate server and network management system, coordination is finished jointly mutually provides IP operation to inserting portable terminal, the mode that adopts loading end and chain of command to be separated simultaneously, be convenient to merge with existing network such as NGN, mobile access point can be supported multiple air interface, and whole broadband is moved Access Network and do not relied on concrete air interface type.In addition, utilize existing various wired or wireless network carrying broadband access network, under controller BMNC control, each access point AP is with the data service aggregated gateway BMAP that arrives, route implementing IP operation by BMAP provides, and realizes QoS by BMNC control, and AS then assists BMNC to finish authenticating user identification and subscriber information management, NMC then is used to provide the network operation man-machine interface, expands the fusion that can also finish with external network by the function to BMNC and BMAP simultaneously.
Fig. 2 shows broadband according to an embodiment of the invention and moves the connecting system architecture.This system comprises portable terminal MT, mobile access point AP, broadband Mobile Access Gateway (BroadbandMobile Access Gateway, abbreviation " BMAG "), broadband mobile network controller (BroadbandMobile Network Controller, abbreviation " BMNC "), broadband access bearer network, access authentication server (Authentication Service, be called for short " AS ") and network management system (Network ManagementSystem is called for short " NMS ").
Wherein, MT is meant the subscriber terminal equipment of supporting this broadband to move the wave point access network that connecting system provides.In a preferred embodiment of the present invention, may and deposit in the consolidated network and support multiple wireless air interface mixed networking, MT can only support a kind of wave point or support multiple wave point simultaneously.
AP is the access server that wireless signal is provided to MT, is made up of at least one cover wireless radio transceiver and relevant antenna-feedback system, and wireless signal covers a specific zone, can pass through this AP accessing to wide band network at this regional portable terminal MT.In a preferred embodiment of the present invention, the wireless air interface that AP supported is unrestricted, all is that access technology is moved in optional broadband such as IEEE 802.11 series, IEEE 802.15 series, IEEE802.16 series etc.AP is controlled by BMNC and finishes the MT access control.In actual applications, AP can support simultaneously a plurality of less radio-frequency channels, simultaneously support multiple air interface standard, cover a plurality of zones or certain zone of overlapping covering simultaneously.
BMAG is a broadband mobile subscriber business convergence device, is used to safeguard that MT connects to the IP between the BMAG.Under the control of BMNC, BMAG carries out relevant IP layer and above business game of IP layer such as behaviors such as route, safety, and according to business or user's qos requirement, provides AP to guarantee to the carrying QoS between the BMAG.Under the control of BMNC, BMAG can support MT to switch between different radio channel or sub-district and keep IP to connect and the related service continuity.Such as, when carrying out the sub-district switching, it is all effective on two AP that BMNC detects the MT signal, and at this moment BMNC organizes two AP to hold consultation by BMAG, formulates switching flow and data transaction relation, carries out seamless switching.
BMNC is the controller of whole access network, finishes the transmitting-receiving of chain of command signal, is mainly used in RRM, user mobility management, user access control.In a preferred embodiment of the present invention, the radio resource management function of BMNC comprises at the whole system overlay area and carries out radio-resource-configuration and monitoring etc.AP can download relevant radio-resource-configuration from BMNC after working on power.The user mobility management function of BMNC comprises for mobile MT and keeps IP to connect constant when the different radio interchannel switches and the above related service of IP layer do not interrupt, and guarantees the seamless switching of MT minizone.The user access control function of BMNC comprises control AP and finishes the MAC layer access control of eating dishes without rice or wine, and relevant IP connection and related service control are finished in control based on authenticating user identification.
The broadband access bearer network is used to carry above-mentioned the communication between the entity, promptly carries between AP, the business between AP and BMAG, the BMNC.According to practical situations certain requirement is proposed bearer network, in a preferred embodiment of the present invention, adopt the existing wired or wireless network carrying, reach resource reuse, cost-effective purpose, utilizable conventional network resources is such as wire access technology such as twisted-pair feeder access, power line access, coaxial cable access, optical fiber access or wireless point-to-point, wireless points being arranged to wireless access technologys such as multiple spot, wireless mesh networkings.When making up the broadband access bearer network, adopt existing resource, can reduce the cost of operator greatly.
AS is used for the access authentication request of process user and issues the customer service control strategy according to the customer service attribute as MT authenticating user identification server, and maintenance customer's information provides other entities loading.MT by the AS authentication could obtain the IP service.When carrying out, also need to cooperate the subscriber authentication server of other networks to communicate cooperation with other network integrations.
Network management system NMS is responsible for the broadband is moved the maintenance management of Access Network related network device and corresponding man-machine interface is provided.NMS will improve network operation efficient greatly, make things convenient for the network manager to carry out maintenance management.
In one embodiment of the invention, when above-mentioned each network entity carries out networking in the broadband access bearer network, the professional and chain of command service detach of data user's face, wherein the chain of command business is controlled by BMNC, BMNC controls each entity by chain of command, keeps the network operation; Data user's face business then is mainly between the AP, the data flow between AP and the BMAG, by AP, BMAG under BMNC control, converge, route.
In one embodiment of the invention, utilize the broadband to move access loading network each entity in the broad band mobile cut-in net system is carried out networking, the existing Internet resources that adopt, such as VLAN (VirtualLocal Area Network, be called for short " VLAN ") or IP network, only need the broadband to move the access loading network supported vlans.Move in the Access Network networking in the broadband, need the service bearer between design AP, BMNC, the BMAG to connect.AP can select different access way access networks.AP can directly be connected with BMAG or be connected with BMAG, BMNC by a broadband access bearer network.In order better business to be managed and to ensure, when considering that AP inserts networking, need to consider to isolate mutually between the different business, as the isolation of different AP, the isolation of different MT, the isolation between the last management of AP control aspect business and the MT user's bearer service etc.
Fig. 3 show according to part embodiment of the present invention based on VLAN or IP to the professional networking situation between AP, BMNC and the BMAG three in the chain of command business of broadband access network.
Fig. 3 (a) show according to an embodiment of the invention based on VLAN to the professional networking between AP and the BMNC in the chain of command business of broadband access network.As long as broadband access bearer network supported vlans, setting up VLAN between node AP and Node B MNC gets final product, consider requirements such as user isolation, professional isolation, in one embodiment of the invention, the networking in a VLAN with a plurality of AP and BMNC, in another embodiment of the present invention, then with each AP all with BMNC networking in VLAN independently, can realize the isolation between the AP business.
Fig. 3 (b) show according to an embodiment of the invention based on IP to the professional networking between AP and the BMNC in the chain of command business of broadband access network.Because IP transmits business, therefore need to carry out route by BMAG earlier, the IP data of dealing BMNC are routed to BMNC, therefore pass through the IP route between BMAG and the BMNC, and still carry out networking between AP and the BMAG by VLAN, therefore, consider user isolation, requirements such as professional isolation, in one embodiment of the invention, the networking in a VLAN with a plurality of AP and BMAG, in another embodiment of the present invention, then with each AP all with BMAG networking in VLAN independently, transmit IP operation by BMAG then and give BMNC, can realize the isolation between the AP business.
Fig. 3 (c) show according to an embodiment of the invention based on VLAN to the professional networking between BMNC and the BMAG in the chain of command business of broadband access network.Identical with the professional networking between AP and the BMNC, carry out networking by VLAN between a plurality of BMAG and the BMNC, there is BMAG to isolate mutually or do not isolate two kinds of situations, in one embodiment of the invention, a plurality of BMAG and BMNC carry out networking by a VLAN jointly; In another embodiment, each BMAG and BMNC by one independently VLAN carry out networking, professional between the different B MAG isolated mutually.
Fig. 3 (d) show according to an embodiment of the invention based on IP to the professional networking between BMNC and the BMAG in the chain of command business of broadband access network.Because a plurality of BMAG and BMNC are network node, when therefore by IP BMNC and BMAG being carried out networking, what need the broadband access bearer network has an IP routing function, and then BMAG and BMNC bearer network IP address allocated are carried out the IP message communication.
Fig. 4 shows and based on VLAN or IP the situation that the user service data face carries out networking in the Access Network is moved in the broadband according to part embodiment of the present invention.Rank according to customer service is isolated can have multiple scheme, isolates mutually such as the MT customer service that belongs to different AP, and different MT customer services are isolated mutually, and perhaps the different business of same MT is isolated mutually, and obviously last a kind of scheme degree of isolation is the highest.Shown in Fig. 4 (a), in one embodiment of the present of invention, the business of different AP is isolated by different VLAN, isolates by the IP route but same AP goes up the different MT that insert.Shown in Fig. 4 (b), in an alternative embodiment of the invention, different MT are connected with BMAG by different VLAN after inserting AP, realize isolation mutually between the business of different MT.Shown in Fig. 4 (c), in an alternative embodiment of the invention, the dissimilar business of same MT converges to BMAG by different VLAN after inserting AP, realizes the mutual isolation between the different kinds of business.
In a preferred embodiment of the present invention, adopt the networking of minimum degree of isolation to realize user data face and the isolation of managing chain of command, adopt the quarantine networking of respective degrees to realize customer service QoS is in various degree guaranteed.Such as the quarantine networking that adopts different kinds of business, can realize guaranteeing by the different QoS of type of service.
Fig. 5 shows broadband according to an embodiment of the invention and moves Access Network wireless coverage networking situation.Consider the wireless coverage networking of a plurality of AP, the scale according to move inserting moves connecting system with a broadband and is divided into a plurality of service areas, and BMNC is for one or provide service for the mobile access of a plurality of service areas simultaneously.Service area has corresponding identification number in system, such as can be mapped as Service Area Identifier number (Service Section Identity is called for short " SSID ") in based on 802.11 series standards.A service area has reflected a big relatively overlay area geographically, and it comprises that one group of AP finishes the covering in this zone.Can adopt a plurality of AP to cover continuously on concrete the enforcement, perhaps cover with discrete focus.Service area can be divided into many sub-districts again in logic.A sub-district may include only a wireless channel, also may comprise a plurality of wireless channels.When comprising a plurality of wireless channel, just can between these wireless channels, accomplish load sharing.The wireless channel of overlapping covering may belong to same AP, also may adhere to different AP separately.In addition, allow the part wireless channel to cover a big zone, some local areas in this zone allow other wireless channels to repeat to cover simultaneously.The big zone that covers is called macrocell, and the local zone of repeating to cover is called Microcell.As previously mentioned, the broadband access network system realizes the irrelevant characteristic to air wireless interface, therefore it is unrestricted that different sub-districts covers corresponding wireless air interface standard, and for example macrocell can adopt IEEE 802.16 series standards, and Microcell adopts 802.11 series standards.
Those of ordinary skill in the art are appreciated that, above-mentioned air wireless interface standard can be any applicable standards, the bearing mode of above-mentioned broadband access bearer network is not defined as VLAN or IP, can be chosen as the bearing mode of other any appropriate according to actual conditions, realize goal of the invention, and do not influence the spirit and scope of the invention.
In one embodiment of the invention, utilize the broadband to move Access Network and existing network fusion, such as, mobile communication core net, the Internet, fixed line next generation network (Next Generation Nerwork is called for short " NGN ").Fig. 6 (a) shows and according to an embodiment of the inventionly moves Access Network provides mobile IP service for MT network integration scheme with the broadband, when a MT requires to insert its home network by mobile IP, as enterprise network, Access Network is moved as the access network in the broadband, get in touch with belonging area network foundation, BMAG realizes Foreign Agent (the Foreign Agent of mobile IP, be called for short " FA ") function, the IP packet is routed to home agent (Home Agent, be called for short " HA "), in addition, AS also cooperates with the aaa server of ownership place and obtains user profile.In the practical application, when the switching of striding between the different system, as MT from GPRS (General Packet Radio Service, abbreviation " GPRS ") netsurfing is to the broadband mobile access network, may require to guarantee that by mobile IP the IP address is constant, to guarantee professional continuity.
Fig. 6 (b) shows the integration program that Access Network and mobile network circuit domain are moved in broadband according to an embodiment of the invention.The switch of mobile network circuit domain is mobile switching centre's (Mobile SwitchingCenter is called for short " MSC "), is equivalent to mobile SoftSwitch.The business of MT is routed to the media gateway (Media Gateway, be called for short " MG ") of mobile network circuit domain by BMAG, and BMNC will set up according to the carrying request of setting up of MSC and insert the side carrying simultaneously, be mainly used in the guarantee of QoS.The business of mobile network circuit domain is speech business, therefore from MT to MG with the Vo IP business.At chain of command, MT will realize mobile network circuit domain call agreement, as 3GPP 24.008 or 04.08 etc.
Fig. 6 (c) shows the integration program that Access Network and mobile network packet domain are moved in broadband according to an embodiment of the invention.The data service gateway node of mobile grouping field is different in heterogeneous networks among the figure, packet data serving node (Packet Data Serving Node, be called for short " PDSN ") be code division multiple access (Code Division Multiple Access, be called for short " CDMA ") packet data serving node in 2000, ggsn (Gateway GPRS Support Node, be called for short " GGSN ") be the gateway service node of GPRS/ Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access is called for short " WCDMA ") network.The broadband is moved Access Network and can directly be received on the mobile grouping field gateway node, with direct acquisition packet switch domain service and the seamless switching support of interdepartmental system is provided.MT inserts the IP address of mobile Packet Based Network and is distributed by GGSN or PDSN.MT is equivalent to two IP addresses, and one is Access Layer IP address, distributes in the broadband access bearer network.Based on this IP address at MT to setting up virtual connection between the GGSN/PDSN, on this virtual connection, set up MT again and connect to the IP of mobile grouping field.
Fig. 6 (d) shows the integration program that Access Network and NGN are moved in broadband according to an embodiment of the invention.Same, BMAG and MG set up the routing relation data streams, and BMNC and SoftSwitch are set up control relation.NGN is applied as voice service, therefore from MT to MG with the Vo IP business.At chain of command, MT will realize the NGN hello protocol, as session initiation protocol (SessionInitiation Protocol is called for short " SIP ").BMNC then sets up according to the carrying request of setting up of soft switch and inserts the side carrying, is mainly used in QoS and ensures.
In one embodiment of the invention, the broadband is moved the Access Network method and comprised three steps: at first, AP is linked into system, and promptly each entity of AP and broad band mobile cut-in net system is set up communication link; Then, set up relatedly between AP and the BMNC, promptly BMNC controls AP after collecting AP information, and the wireless coverage of Access Network is moved in the realization broadband; At last, under BMNC control, BMAG and AP provide the broadband to move access service to MT, as IP operation.
See easily that from aforementioned physical interface between AP and other entities is actual to be that permission is diversified, promptly can be wireless, also can be wired.And communicating by letter of chain of command of management can be based on VLAN or IP between AP and other entity.At the user data face, then mostly be based on VLAN.Therefore, so-called AP connecting system, promptly AP has set up with system physically and has got in touch, and also sets up in the carrying that communicates with other entity of management chain of command simultaneously, i.e. allocation manager chain of command VLAN or IP address.Management chain of command VLAN label can be finished by the method for static configuration, perhaps by the system dynamics setting.Management chain of command IP can finish by the method for static configuration the address, perhaps dynamically obtains the IP address by DHCP.After system also can require earlier AP carried out authentication, assignment VLAN label or IP address.
Related between AP and the BMNC is meant can set up between two entities directly writes to each other.BMNC need set up related with intrasystem each AP, BMAG.The related suggestion static configuration between BMNC and the BMAG wherein.Related between AP and the BMNC can pass through static configuration, also can be dynamic foundation.
The broadband is moved Access Network and is provided the broadband to move access service to MT to be generally the IP Connection Service, connects based on IP and can support the application service enriched to comprise IP multimedia, NGN service, mobile network circuit domain and packet switch domain service etc.Need MT when supporting these professional and provide between the core network of related service to carry out service negotiation.The major function of BMNC is that the IP Connection Service is set up in control.When the broadband mobile access network is linked into mobile network core net, NGN core net etc., BMNC bears the broadband and moves chain of command interface between Access Network and these core net, and according to core net related service strategy, control broadband each related entities of mobile access network.
Fig. 7 shows the interface that each inter-entity of Access Network is moved in broadband according to an embodiment of the invention.Be wave point IA between MT and the AP, two-layer following agreement is relevant with concrete air wireless interface, can be based on the relevant criterion of relevant WLAN (wireless local area network), Wireless Personal Network, wireless MAN.Between AP and the BMAG IB interface, i.e. VLAN or IP link.
At the user data face, AP is equivalent to two-layer bridging device, the network layer IP link between carrying MT and BMAG.Wherein, AP is connected with VLAN between the BMAG and can sets up by dynamically control or static configuration, and DHCP (Dynamic HostConfiguration Protocol, abbreviation " DHCP ") dynamic assignment can pass through in the IP address of MT.
At the management chain of command, interface IC1 is integrated control ﹠ management agreement (Centralized Control And Management Protocol between AP and the BMNC, CCAMP), be used to finish access control and related management configuration effort, the CCAMP agreement is by the VLAN or the IP tunnel carrying of bottom.The access authentication method of MT can adopt existing authentication techniques scheme, as IEEE 802.1x standard, wireless authentication and privacy framework (Wireless Authentication and Privacy Infrastructure, abbreviation " WAPI ") the wireless local area network (WLAN) verification framework in (WLAN Authentication Infrastructure is called for short " WAI ") authentication method etc.Wherein MAC layer-management function can be realized by AP, simultaneously part MAC layer-management frame is handled by BMNC.
In one embodiment of the invention, the CCAMP agreement realizes following function: part wave point MAC layer-management frame is forwarded to BMNC goes to handle, with the access control that realizes that the MAC layer is concentrated; Messages such as 802.1x are dealt into BMNC to be gone to handle; Support BMNC to issue relevant wave point MAC layer and physical layer relevant parameter, with dynamic adjustment, optimization wireless environment; Support BMNC to issue relevant MAC layer Access Control Policy, support that AP reports various statistics and warning information to BMNC.
In one embodiment of the invention, when MT when the different radio interchannel switches, switch by unified processing of BMNC.Switch relevant frame such as handle all MAC by BMNC; Perhaps when MT inserts AP, report BMNC, judge whether to switch by BMNC, and respond Access Control Policy information to AP, as the safety etc. of eating dishes without rice or wine.
In one embodiment of the invention, MT inserts AP and comprises following steps: at first, after MT is by the authentication of user's access identity, BMNC by interface to AP issuing service parameter, as QoS etc., and the VLAN label between AP and the BMAG; Then, after MT finishes authentication, initiate DHCP message request distributing IP address, AP is forwarded to the DHCP message on the VLAN of user data face of distribution, and BMAG will respond this DHCP and ask, and finish the dynamic assignment of IP address.
At the management chain of command, the interface IC2 between BMAG and the BMNC is gateway control protocol (Gateway Control Protocol is called for short " GCP "), by VLAN or IP tunnel carrying.BMAG moves the access service convergent point as the broadband, needs the IP of management MT to connect.BMNC issues the relevant parameter that carrying is set up by the GCP agreement to BMAG: the user domain that VLAN label, MT insert, relevant IP layer service Control Parameter and carrying Control Parameter, and as QoS etc.BMAG determines how to distribute the IP address of MT according to the difference of user domain.
Though by reference some preferred embodiment of the present invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that, can do various changes to it in the form and details, and the spirit and scope of the present invention that do not depart from appended claims and limited.
Claims (25)
1. a broad band mobile cut-in net system comprises a plurality of portable terminals and mobile access point, and described mobile access point is communicated by letter by air wireless interface with the described portable terminal in the institute coverage cell, and described portable terminal is inserted described system,
It is characterized in that described system also comprises:
The broadband Mobile Access Gateway is used to converge user traffic flow, safeguards that the Internet protocol of described portable terminal connects;
Broadband mobile access network controller is used to realize radio resource management function, user mobility management function, user access control function;
The broadband access bearer network is used to carry between the described mobile access point, the communication link between described broadband Mobile Access Gateway and the described mobile access point, between described broadband mobile access network controller and the institute's mobile access point.
2. broad band mobile cut-in net system according to claim 1 is characterized in that, described system also comprises:
Certificate server is used for by the mobile access network controller process user access authentication request of described broadband, issues the customer service control strategy.
3. broad band mobile cut-in net system according to claim 1 is characterized in that, described system also comprises:
Network management server is used to provide man-machine interface, by described broadband mobile access network controller to described broad band mobile cut-in net system equipment control and maintenance.
4. broad band mobile cut-in net system according to claim 1 is characterized in that, in described broadband access bearer network, chain of command separates networking with loading end.
5. broad band mobile cut-in net system according to claim 4 is characterized in that, the described chain of command between described mobile access point and the described broadband mobile access network controller carries out networking based on VLAN.
6. broad band mobile cut-in net system according to claim 4 is characterized in that, the described chain of command between described mobile access point and the described broadband mobile access network controller carries out networking by described broadband Mobile Access Gateway based on Internet protocol.
7. according to claim 5 or 6 described broad band mobile cut-in net systems, it is characterized in that the described chain of command between different described mobile access points and the described broadband mobile access network controller is separated from each other networking.
8. broad band mobile cut-in net system according to claim 4 is characterized in that, the described chain of command between described broadband Mobile Access Gateway and the described broadband mobile access network controller carries out networking based on described VLAN.
9. broad band mobile cut-in net system according to claim 4 is characterized in that, the described chain of command between described broadband Mobile Access Gateway and the described broadband mobile access network controller carries out networking based on Internet protocol.
10. according to Claim 8 or 9 described broad band mobile cut-in net systems, it is characterized in that the described chain of command between different described broadband Mobile Access Gateways and the described broadband mobile access network controller is separated from each other networking.
11. broad band mobile cut-in net system according to claim 4 is characterized in that, the described loading end between described mobile access point and the described broadband Mobile Access Gateway carries out networking based on described VLAN.
12. broad band mobile cut-in net system according to claim 11 is characterized in that, the described loading end between different described mobile access points and the described broadband Mobile Access Gateway is separated from each other networking.
13. broad band mobile cut-in net system according to claim 11 is characterized in that, the described loading end that belongs to different described portable terminal is separated from each other networking.
14. broad band mobile cut-in net system according to claim 11 is characterized in that, the different described loading end that belongs to identical described portable terminal is separated from each other networking.
15. according to each described broad band mobile cut-in net system in the claim 1 to 4, it is characterized in that described air wireless interface meets international institute of electrical and electronic engineers 802.11 standards, international institute of electrical and electronic engineers 802.15 standards or international institute of electrical and electronic engineers 802.16 standards.
16. according to each described broad band mobile cut-in net system in the claim 1 to 4, it is characterized in that described mobile access point is supported two above less radio-frequency passages simultaneously, supports two or more air wireless interface, cover two above sub-districts, overlapping coverage cell.
17., it is characterized in that described broadband access bearer network is built on the basis of broadband fixed Access Network according to each described broad band mobile cut-in net system in the claim 1 to 4.
18. the Access Network method is moved in a broadband, is used for the described broad band mobile cut-in net system of claim 1, it is characterized in that, comprises following steps,
A mobile access point access band mobile cut-in net system;
B broadband mobile access network controller is related with described mobile access point foundation, and described broadband mobile access network controller is set up related with the broadband Mobile Access Gateway;
C provides broadband to move access service according to the association of described foundation to portable terminal by described mobile access point.
19. the Access Network method is moved in broadband according to claim 18, it is characterized in that, described steps A comprises following substep,
Set up the physical connection of described mobile access point and system;
Setting up described mobile access point is connected with loading end with the chain of command of system other entities.
20. the Access Network method is moved in broadband according to claim 18, it is characterized in that, described step B comprises following substep,
Set up related between described broadband mobile access network controller and the described broadband Mobile Access Gateway by static configuration;
Set up related between described broadband mobile access network controller and the described mobile access point by static configuration or dynamic-configuration.
21. the Access Network method is moved in broadband according to claim 18, it is characterized in that, described step C comprises following substep,
Described portable terminal is communicated by letter with described mobile access point by air wireless interface;
Described mobile access point receives the Internet protocol traffic data by described broadband access bearer network;
Described broadband Mobile Access Gateway is finished the Internet protocol traffic route under the control of described broadband mobile access network controller.
22. the Access Network method is moved in broadband according to claim 18, it is characterized in that, communicate by letter by air wireless interface between described portable terminal and the described mobile access point, communicate by letter by VLAN between described mobile access point and the described broadband Mobile Access Gateway, by the bridge joint effect of described mobile access point, set up the network layer Internet protocol between described portable terminal and the described broadband Mobile Access Gateway and be connected;
By the integrated control ﹠ management protocol communication, described integrated control ﹠ management agreement is carried by the VLAN passage between described mobile access point and the described broadband mobile access network controller;
Communicate by letter by gateway control protocol between described broadband Mobile Access Gateway and the described broadband mobile access network, described gateway control protocol is carried by the VLAN passage.
23. the Access Network method is moved in broadband according to claim 22, it is characterized in that, described step C also comprises following substep,
Described portable terminal inserts described mobile access point, passes through authenticating user identification;
Described broadband mobile access network controller by described integrated control ﹠ management agreement to described mobile access point issuing service parameter;
Described portable terminal is initiated the internet protocol address request for allocation, is forwarded to described broadband Mobile Access Gateway by described mobile access point;
Described broadband mobile access network controller issues carrying by described gateway control protocol to described broadband Mobile Access Gateway and sets up parameter;
Described broadband Mobile Access Gateway is set up the internet protocol address that parameter is distributed described portable terminal according to described carrying.
24. the Access Network method is moved in broadband according to claim 18, it is characterized in that, described step C also comprises following substep:
When described portable terminal when the different radio interchannel switches, switch relevant frame by unified all media access control layers of handling of described broadband mobile access network controller.
25. the Access Network method is moved in broadband according to claim 18, it is characterized in that, described step C also comprises following substep,
When described portable terminal when the different radio interchannel switches, described mobile access point reports described broadband mobile access network controller, is judged whether to switch by described broadband mobile access network controller, and gives the Access Control Policy information of returning.
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| CN101453761B (en) * | 2007-11-30 | 2012-10-17 | 华为技术有限公司 | System, method and device for network access control |
| CN101500344B (en) * | 2008-01-29 | 2011-08-24 | 中兴通讯股份有限公司 | Service platform system for implementing enterprise fusion communication |
| CN101645814B (en) * | 2008-08-04 | 2012-05-23 | 上海华为技术有限公司 | Method, equipment and system for enabling access points to access mobile core network |
| CN101945415B (en) * | 2009-07-06 | 2015-05-13 | 中兴通讯股份有限公司 | Data transmission system and method |
| CN101959192A (en) * | 2009-07-17 | 2011-01-26 | 华为技术有限公司 | Business processing method and communication device |
| CN102026318B (en) * | 2009-09-17 | 2013-09-11 | 中兴通讯股份有限公司 | Switching management method and system and user data management method and system during switching as well as AGR (Access gateway Router) |
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