CN1996914B

CN1996914B - A system and method for network interconnection under the wireless network layer

Info

Publication number: CN1996914B
Application number: CN2006100326139A
Authority: CN
Inventors: 郑若滨
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2005-12-31
Filing date: 2005-12-31
Publication date: 2010-12-08
Anticipated expiration: 2025-12-31
Also published as: CN1996914A

Abstract

This invention discloses one wireless network layer transfer realization network connection system, which comprises wireless interface network and relative core network, wherein, the wireless interface network comprises base station element and controller; the controller is set as control and bearing isolation composed of interface servo and base station wireless adapter to transfer the original interface into base station wireless adapter; the base station is added with wireless adapter to supply media interface control, wireless linkage control, set data collection agreement, area special wireless materials management and switch control function.

Description

A kind of wireless network layer moves down the system and method for realizing network interconnection

Technical field

The present invention relates to a kind of interconnection system and method for wireless optical Access Network, in particular, a kind of wireless network layer moves down the system and method for network interconnection.

Background technology

The Optical Access Network of prior art (general designation FTTx) is with the place, position of optical network unit (ONU), be divided into FTTH (Fibre To The Home fiber-to-the-home), Fiber To The Building (FTTB, Fibre To The Building) and Fiber To The Curb several situations such as (FTTC, Fibre To The Curb).

The formal title of Optical Access Network OAN (Optical Access Network) is FITL (FITL, Fiber in the loop), because the high bandwidth that optical access network inserts can better be carried out the i.e. business of while transferring voice, data and multimedia video of TriplePlay.Optical Access Network mainly adopts PON (Passive Optical Network, EPON) technology, and main flow comparative maturity technology mainly contains two kinds now: EPON (Ethernet Passive Optical Network, ethernet passive optical network) is the technology of releasing calendar year 2001; GPON (Gigabit Passive Optical Network, gigabit passive optical network) standard was passed through by ITU in January, 2003.The main network architecture of FTTx network has been described the network architecture of optical access network as shown in Figure 1, and its concrete OAN frame of reference as shown in Figure 2.

The whole frame of reference of optical access network OAN is made up of local network of users CPN (Customer Premises Network), Access Network AN (Access Network) and business function point SNF (Service Node Function).Wherein in Access Network, AF is adaption function body (Adaptation Function), it is optional equipment, mainly provide ONU/ONT interface (Optical Network Unit optical network unit/Optical Network Terminal Optical Network Terminal) and uni interface (User Network Interface, User Network Interface) mutual conversion, AF also can be built among the ONU, and (a) reference point can not wanted like this.AF also can be placed on the mutual conversion that OLT (Optical Line Termination, light path destination node) makes OLT interface and SNI interface (Service Node Interface, service point interface) afterwards.AF both can regard the functive of CPN as, also can regard the functive of Access Network as.

The main network element of the OAN local network of users and Access Network comprises: light path destination node OLT, optical distribution network ODN (Optical Distribution Network, optical distribution network), network unit/optical network terminal ONU/ONT, adaption function body AF.Wherein T is the reference point of uni interface, and V is the reference point of SNI interface.OLT provides network interface and is connected to one or more ODN for ODN.ODN provides transmission means for OLT and ONU, ONU provides user side interface for OAN and links to each other with ODN, user's equipment CPE (Customer Premises Equipment, ustomer premises access equipment) is connected to AF by uni interface (as: by the DSL circuit), AF is connected message format by uni interface format conversion Cheng Nengyu ONU (a) interface (as: Ethernet link) form, ONU converts message to the form (as: encapsulation of the encapsulation of EPON, the general-purpose group frame of GPON) that can transmit again on ODN.Convert message the message format of SNI interface (as: Ethernet link) to by OLT at last, carry out the visit of service point again.

Adopt similar structure at the 3G/2G wireless communication system, it comprise Radio Access Network (Radio Access Network, RAN) and core network (Core Network, CN).Wherein Radio Access Network is used to handle all and wireless function associated, and CN handles that all voice calls are connected with data in the wireless communication system, and the exchange of realization and external network and routing function.

CN from be divided in logic circuit commutative field (Circuit Switched Domain, CS) and packet-switched domain (Packet Switched Domain, PS).(Mobile Station MS) has constituted whole 3G/2G cordless communication network together, and its system reference framework as shown in Figure 3 for RAN, CN and travelling carriage.

Wherein, and the base station (Base Station, (Base Transceiver Station BTS), is called Node B (Node B) in WCDMA/TD-SCDMA BS) to be called base transceiver station in GSM/GPRS/CDMA/CDMA2000; Base station controller BSC in WCDMA, be called radio network controller (Radio Network Controller, RNC); In CDMA2000, PCF (Packet Control Function), PCF are positioned at BSC and packet data serving node (Packet Data Serving Node, PDSN) between, the Packet data service support is provided, can puts together with BSC, also can place separately as the part of Radio Access Network.

For WCDMA, used the Iu series interfaces among the UTRAN, comprise Iu, Iur and Iub interface, these interfaces are pressed UTRAN interface general protocol model division protocol stack and are made up of corresponding wireless network layer (RNL) and transport network layer (TNL).The Iu interface is the interface that connects UTRAN and CN, is the standard interface of an opening, and its chain of command agreement is RANAP (Radio Access Network Application Part), and user plane protocol is the GTP agreement.The Iur interface is the interface that connects between the RNC, is the distinctive interface of UMTS system, is used for the mobile management to the RAN travelling carriage.When carrying out soft handover between different RNC, all data of travelling carriage all are to pass to candidate RNC by the Iur interface from the RNC that is working.Iur also is open standard interface, and Iur interface control plane agreement is RNSAP (Radio Network Subsystem Application Part), and user plane protocol is Iur FP.Iub interface is the interface that connects NodeB and RNC, and Iub interface also is the standard interface of an opening, and its chain of command agreement is NBAP, and user plane protocol is IubFP.

Node B is the base station (being radio receiving-transmitting unit) of WCDMA system, comprises radio receiving-transmitting unit and Base-Band Processing parts.By the Iub interface and the RNC interconnection of standard, mainly finish the processing of Uu interface physical layer protocol.Its major function is spread spectrum, modulation, chnnel coding and despreading, demodulation, channel-decoding, also comprises the functions such as mutual conversion of baseband signal and radiofrequency signal.

Described radio network controller (RNC) is used to control the Radio Resource of UTRAN, mainly finishes functions such as connection foundation and disconnection, switching, the merging of grand diversity, RRM control.Specifically comprise: (1) executive system information broadcast and system's access control function; (2) switching and RNC migration mobile management functions such as (Relocation, or reorientation); (3) RRM and controlled function such as grand diversity merging, power control, radio bearer distribution.

Radio interface protocols trestle structure between user equipment (UE) and the UTRAN has comprised various protocols, the different nodes that they are distributed in the Radio Access Network are realized, as shown in Figure 4, wherein, the RRC agreement realizes in UE and RNC, it mainly realizes the management that RRC connects, the management of radio bearer, functions such as paging/broadcasting and mobile management.It is responsible for disposing the parameter information of other protocol entities in the Radio interface protocols stack.Rlc protocol realizes that in UE and RNC it mainly realizes the transfer function of user data, and it provides three kinds of data-transmission modes, is suitable for transmitting the business datum that different QoS requires respectively.The MAC agreement realizes in UE and RNC that usually it is responsible for user data and selects suitable transformat, is responsible for realizing the mapping of logic channel to transmission channel.For some special channel types, the realization of MAC agreement is arranged also among the NodeB.The PDCP agreement realizes in UE and RNC, its function comprises: carry out the header suppression and the decompression of IP traffic respectively in transmission and receiving entity, as the combination of TCP/IP and corresponding particular network layer transport layer of RTP/UDP/IP head header compression method or upper-layer protocol; Transmitting user data is that the PDCP-SDU that Non-Access Stratum is sent here is forwarded to rlc layer, if support that harmless SRNS shift function is then transmitted PDCP-SDU and corresponding sequence number is multiplexed into same RLC entity with a plurality of different RB.

The function of BMC comprises: the storage of cell broadcast messages; Service traffics monitor and are CBS requirement Radio Resource; The scheduling of BMC message; Send BMC message to UE; Transmit cell broadcast messages etc. to high-rise (NAS).

Because Node B only handles physical layer protocol in the existing protocol stack, in case the adaptive technique that needs the employing resource management to adjudicate, all need in RNC, realize, network must be through RNC to Node B to terminal, Node B is to two stages of terminal, vice versa, thereby cause the long time delay of Iub interface, and reduced the disposal ability of Node B and the statistic multiplexing rate of Iub interface transfer resource; And the retransmission mechanism of the rlc layer between RNC and the UE is under Iub interface exists than the long time delay situation, and throughput can descend; And the exterior ring power control algolithm can not be carried out SIRtarget according to the variation of air interface fast and adjust under the big situation of Iub interface time delay; The while cell load information relies on NodeB at present and periodically reports, and has information delay, and the load information that causes RNC to obtain is not real-time.

This shows, all are inserted high-risely all be placed on protocol architecture among the RNC the incompatibility high speed data transfer, be similar to the technology of self adaptation coordination, FEEDBACK CONTROL in employing after, this kind protocol architecture can not guarantee high speed, efficient, thereby is difficult to adapt to the demand of high speed data transfer.

Summary of the invention

The object of the present invention is to provide a kind of wireless network layer to move down the system and method for realizing network interconnection, the problem of the network interconnection that inserts at 3G/2G cordless communication network and OAN such as PON technology, propose wireless network the Radio interface protocols stack is moved down into the base station, again with the scheme of OAM network close coupling or loose coupling, wireless extension as the wired access of OAM, be applicable to fixed wireless, nomadic, portable and mobile access application, for OAN Virtual network operator development wireless network provides a kind of evolution approach.

Technical scheme of the present invention comprises:

A kind of wireless network layer moves down the system that realizes network interconnection, and it comprises Radio Access Network and corresponding core network, and described Radio Access Network comprises the base station network element; Wherein, described system is set to control and separates with bearing function, and comprise wireless interface network servo, be used for Radio interface protocols is moved down into the wireless adapter of base station, wherein, described base station and wireless adapter become one and become the base station and add the wireless adapter network element, and described Radio interface protocols comprises medium access control, Radio Link control, PDCP, cell-specific RRM and switching controls;

Described wireless adapter is used to provide medium access control, Radio Link control, PDCP, cell-specific RRM and switching control function;

Described wireless interface network servo is used to provide the migration control that the base station adds the wireless adapter network element and the function of system information broadcast.

Described system wherein, also further comprises: the packet-switched domain of core network is done control decompose with the carrying separation function, the defined function unit comprises:

Serving GPRS Support Node server, Serving GPRS Support Node gateway, Gateway GPRS Support Node server and Gateway GPRS Support Node gateway;

Described Serving GPRS Support Node server comprises the chain of command function of SGSN, and the chain of command function of described SGSN is used to realize mobile management, connection management and session management;

Described Serving GPRS Support Node gateway comprises the user plane functions of SGSN;

Described Gateway GPRS Support Node server comprises the chain of command function of GGSN;

Described Gateway GPRS Support Node gateway comprises the user plane functions of GGSN.

Described system, wherein, in described core network, described Serving GPRS Support Node gateway and base station add the user's face of the interface employing interface Iu between the wireless adapter network element; Interface between described Serving GPRS Support Node server and wireless interface network servo adopts the chain of command of interface Iu.

Described system, wherein, the interface between described Serving GPRS Support Node gateway and Gateway GPRS Support Node gateway adopts user's face of interface Gn; Interface between described Serving GPRS Support Node server and described Gateway GPRS Support Node server adopts the chain of command of interface Gn.

Described system, wherein, H.248 interface between described Serving GPRS Support Node server and Serving GPRS Support Node gateway adopts the Megaco of IETF or ITU-T, and described Serving GPRS Support Node server manages the Serving GPRS Support Node gateway by Megaco/H.248.

Described system, wherein, H.248 interface between described Gateway GPRS Support Node server and described Gateway GPRS Support Node gateway adopts the Megaco of IETF or ITU-T, and described Gateway GPRS Support Node server manages the Gateway GPRS Support Node gateway by Megaco/H.248.

Described system wherein, also further comprises: control is done in the PS territory of core network decomposed with the carrying separation function, the defined function unit comprises:

Comprehensive GPRS Support Node server and comprehensive GPRS Support Node gateway;

Described comprehensive GPRS Support Node server comprises the chain of command function of SGSN and GGSN, and described comprehensive GPRS Support Node gateway comprises the user plane functions of SGSN and GGSN.

Described system, wherein, in described core net, described comprehensive GPRS Support Node gateway and base station add the user's face of the interface employing interface Iu between wireless adapter;

Interface between described comprehensive GPRS Support Node server and wireless interface network servo network element adopts the chain of command of interface Iu.

Described system, wherein, the Megaco of the interface employing IETF between described Gateway GPRS Support Node server and Gateway GPRS Support Node gateway or ITU-T are H.248; Described Gateway GPRS Support Node server manages the Gateway GPRS Support Node gateway by Megaco/H.248.

A kind of wireless network layer moves down the method that realizes network interconnection, comprise: medium access control in the Radio interface protocols, Radio Link control, PDCP, cell-specific RRM and switching control function are moved down in the wireless adapter, and described wireless adapter and base station become one and become the base station and add the wireless adapter network element; Wireless communications network base station is added the reference point a interconnection in Optical Access Network by adaption function body and Optical Access Network of wireless adapter network element, the reference point v interconnection in optical access network of the wireless interface network servo of cordless communication network and core net and light path destination node is to realize the interconnection of Optical Access Network and cordless communication network; Wireless interface network servo provides the migration control that the base station adds the wireless adapter network element and the function of system information broadcast, supports the control of switching mutually between wired access and wireless access.

Described method, wherein, described base station adds the wireless adapter network element and separates with described adaption function body network element, interconnects with reference point T;

Perhaps, described base station adds the wireless adapter network element and adaption function body network element becomes one, with the reference point a interconnection of network unit/optical network terminal in Optical Access Network.

Described method, wherein, wireless interface network servo can become one with light path destination node network element.

Described method wherein, also comprises and enables the compression/de-compression function, and the transmission course of the user face data of this moment comprises: up:

The application layer data of A1, subscriber equipment is packaged into the PDCP protocol layer of issuing wireless network layer behind IP bag or the PPP bag, and the PDCP protocol layer compresses the data packet head, and the data after will compressing are passed to the RLC/MAC protocol layer of wireless network layer;

B1, RLC/MAC protocol layer are issued the WCDMA physical layer of subscriber equipment behind the increase RLC/MAC header after receiving packet, the WCDMA physical layer of described subscriber equipment is carried out the coded modulation operation to the packet that receives, and sends to UTRAN by the Uu interface;

Among C1, the described UTRAN, the WCDMA physical layer that the base station adds the wireless adapter network element is received the MAC/RLC protocol layer that sends to wireless network layer after the data;

D1, described MAC/RLC protocol layer are removed protocol header successively, merge through reorganization, and data are issued the packet data convergence protocol of wireless network layer, and compressed packet header is decompressed;

E1, described base station add the data that the wireless adapter network element will separate out by the GPRS Tunnel Protocol tunnel and are forwarded to core network through the Iu-D interface.

Described method, wherein, described step e 1 also comprises:

E11, described base station add the wireless adapter network element GPRS Tunnel Protocol/UDP/IP bag are divided into data link frame, and are carried on that physical layer is sent to the adaption function body between Node B and adaption function body;

E12, described adaption function body are converted to the optical network unit data link frame with data link frame, and are carried on that physical layer is sent to network unit/optical network terminal between network unit/optical network terminal and adaption function body;

E13, described network unit/optical network terminal are converted to the optical distribution network data link frame that is fit to optical transmission with the network unit/optical network terminal data link frame, and carry out the electric light conversion and be carried on the optical distribution network physical layer, are sent to the light path destination node through optical fiber;

E14, described light path destination node physical layer are carried out opto-electronic conversion and are obtained the optical distribution network data link frame, the optical distribution network data link frame are converted to data link frame again and are sent to core network and do further processing.

Described method, wherein, described step e 1 also is included in the step of core network:

F1, SGSN/ Serving GPRS Support Node gateway do the transport network layer of Iu-D interface and wireless network layer is handled, and receives data from the GPRS Tunnel Protocol tunnel of this interface and passes through the Gn/Gn-D interface with the GPRS Tunnel Protocol tunnel again and send to GGSN/ Gateway GPRS Support Node gateway;

G1, GGSN/ Gateway GPRS Support Node gateway are issued external network with the form of IP bag or ppp protocol bag by the Gi interface.

The comprehensive GPRS Support Node gateway of F2, IGSN/ does the transport network layer of Iu-D interface and wireless network layer is handled, and the data that receive from the GPRS Tunnel Protocol tunnel of Gn/Gn-D interface are exactly IP bag or the PPP bag of UE;

The comprehensive GPRS Support Node gateway of G2, described IGSN/ is issued external network with the form of IP bag or ppp protocol bag.

Described method, wherein, the transmission course of described chain of command signaling comprises: up:

The radio resource control layer of A2, subscriber equipment is packaged into packet with the signaling message of short message or this layer, passes to the RLC/MAC protocol layer of wireless network layer;

B2, described RLC/MAC protocol layer are issued the WCDMA physical layer of subscriber equipment behind the increase RLC/MAC header after receiving packet, the WCDMA physical layer of subscriber equipment is carried out the coded modulation operation to the packet that receives, and sends to UTRAN by the Uu interface;

The WCDMA physical layer that the base station adds the wireless adapter network element among C2, the UTRAN is received the MAC/RLC protocol layer that sends to wireless network layer after the data;

D2, described MAC/RLC protocol layer are removed protocol header successively, merge through reorganization, and data are issued the radio resource control layer of wireless network layer, and this radio resource control layer is direct parsing signaling message usually, carries out respective handling.

The radio resource control layer that described base station adds the wireless adapter network element directly carries the radio resource control layer of result being notified wireless interface network servo to corresponding signaling message by Iub-C interface wireless network layer and transport network layer, delivers the core network processing by wireless interface network servo through the wireless network layer and the transport network layer of Iu-C interface again.

Described method, wherein, Radio Resource control, wireless network layer and transport network layer that described base station adds the interface between wireless adapter network element and wireless interface network servo directly are carried on the Optical Access Network.

Described method, wherein, described method also comprises:

E21, described base station add the wireless adapter network element FP/IP or NBAP/SCTP/IP bag are divided into data link frame, and are carried on that physical layer is sent to the adaption function body between Node B and adaption function body;

E22, described adaption function body are converted to the optical network unit data link frame with data link frame, and are carried on that physical layer is sent to network unit/optical network terminal between network unit/optical network terminal and adaption function body;

E23, described network unit/optical network terminal are converted to the optical distribution network data link frame that is fit to optical transmission with the network unit/optical network terminal data link frame, and carry out the electric light conversion and be carried on the optical distribution network physical layer, are sent to the light path destination node through optical fiber;

E24, described light path destination node physical layer are carried out opto-electronic conversion and are obtained the optical distribution network data link frame, the optical distribution network data link frame are converted to data link frame again and are sent to core network and do further processing.

Described method, wherein, in the described core network, IGSN/SGSN/IGSN-Server/SGSN-Server does Iu-C interface transport network layer and wireless network layer is handled, and obtains short message from Radio Access Network Application Part.

Described method, wherein, Optical Access Network adopts two layers of bridging technology between described wireless adapter and core network, and promptly adaption function body, network unit/optical network terminal and light path destination node are all two layers of network element.

Described method wherein, adopts three layers of route technology between described wireless adapter and core network, promptly adaption function body, network unit/optical network terminal and light path destination node are all three-layer network unit.

A kind of wireless network layer moves down the method that realizes network interconnection, comprise: medium access control in the Radio interface protocols, Radio Link control, PDCP, cell-specific RRM and switching control function are moved down in the wireless adapter, and described wireless adapter and base station become one and become the base station and add the wireless adapter network element; Wireless communication network base station is added the wireless adapter network element to interconnect at the optical distribution network place by optical network unit or Optical Network Terminal and optical access network, the reference point v interconnection in optical access network of the wireless interface network servo of cordless communication network and core net and light path destination node is to realize the interconnection of optical-fiber network and cordless communication network; Wireless interface network servo provides the migration control that the base station adds the wireless adapter network element and the function of system information broadcast, supports the control of switching mutually between wired access and wireless access.

Described method, wherein, described base station adds the wireless adapter network element and separates with optical network unit or Optical Network Terminal network element, and with reference point a interconnection, described optical network unit or Optical Network Terminal network element and optical access network interconnect at the Optical Distribution Network place;

Perhaps, the base station adds wireless adapter network element and optical network unit or Optical Network Terminal network element and becomes one, and described optical network unit or Optical Network Terminal network element and optical access network interconnect at the Optical Distribution Network place.

Described method, wherein, the transmission course of user face data comprises: up:

After the application layer data of A3, subscriber equipment is packaged into IP bag or PPP bag, issue the PDCP protocol layer of wireless network layer, the PDCP protocol layer compresses the data packet head, and the data after will compressing are passed to the RLC/MAC protocol layer of wireless network layer;

B3, described RLC/MAC protocol layer are issued the WCDMA physical layer of subscriber equipment behind the increase RLC/MAC header after receiving packet, the WCDMA physical layer of subscriber equipment is carried out the coded modulation operation to the packet that receives, and sends to UTRAN by the Uu interface;

The WCDMA physical layer is received the MAC/RLC protocol layer that sends to wireless network layer after the data among C3, the described UTRAN, and the MAC/RLC protocol layer is removed protocol header successively, merges through reorganization, data is issued the PDCP protocol layer of wireless network layer;

D3, described PDCP protocol layer decompress compressed packet header, and the data that will separate out by the GPRS Tunnel Protocol tunnel are forwarded to core network through the Iu-D interface.

Described method, wherein, described base station adds the wireless adapter network element GPRS Tunnel Protocol/UDP/IP bag is divided into the optical distribution network data link frame that is fit to optical transmission, and carries out the electric light conversion and be carried on the optical distribution network physical layer, is sent to the light path destination node through optical fiber; Described light path destination node physical layer is carried out opto-electronic conversion and is obtained the optical distribution network data link frame, the optical distribution network data link frame is converted to data link frame again and is sent to core network and does further processing.

Described method, wherein, in described core network, SGSN/SGSN-GW does the transport network layer and the wireless network layer of Iu-D interface and handles, and receives data from the GPRS Tunnel Protocol tunnel and sends to GGSN/GGSN-GW with the GPRS Tunnel Protocol tunnel through the Gn/Gn-D interface again;

GGSN/GGSN-GW issues external network with the form of IP bag or ppp protocol bag by the Gi interface again.

Described method, wherein, IGSN/IGSN-GW does the transport network layer and the wireless network layer of Iu-D interface and handles, and receives the IP bag or the PPP bag of subscriber equipment from the GPRS Tunnel Protocol tunnel of Iu-D interface;

IGSN/IGSN-GW issues external network with the form of IP bag or ppp protocol bag again.

Described method, wherein, the transmission course of its chain of command signaling comprises: up:

The radio resource control layer of A4, subscriber equipment is packaged into the RLC/MAC protocol layer that packet is passed to wireless network layer with the signaling message of short message or this layer;

B4, RLC/MAC agreement are issued the WCDMA physical layer of subscriber equipment behind the increase RLC/MAC header after receiving packet, the WCDMA physical layer of subscriber equipment is carried out the coded modulation operation to the packet that receives, and sends to UTRAN by the Uu interface;

The WCDMA physical layer is received the MAC/RLC protocol layer that sends to wireless network layer after the data among C4, the UTRAN, and the MAC/RLC protocol layer is removed protocol header successively, merges through reorganization, data is issued the radio resource control layer of wireless network layer;

D4, described radio resource control layer are resolved signaling message, carry out respective handling.

Described method, wherein, its base station adds the wireless adapter network element FP/IP of Iub-C interface or NBAP/SCTP/IP bag is divided into the optical distribution network data link frame that is fit to optical transmission; And carry out electric light conversion and be carried on the optical distribution network physical layer, be sent to the light path destination node through optical fiber; Described light path destination node physical layer is carried out opto-electronic conversion and is obtained the optical distribution network data link frame, again the optical distribution network data link frame is converted to data link frame and is sent to wireless interface network servo.

Described method, wherein, described wireless interface network servo is done the transport network layer and the wireless network layer of Iu-D interface and is handled, obtain the RNL frame of Radio Resource control, send to the MAC/RLC protocol layer of RNL, the MAC/RLC protocol layer is removed protocol header successively, merge through reorganization, data are issued the radio resource control layer, the radio resource control layer decompresses compressed packet header, obtain packet, by wireless network layer and the transport network layer processing of Iu-C packet is mail to core network then.

Described method, wherein, in the described core network, IGSN/SGSN/IGSN-Server/SGSN-Server does the corresponding interface transport network layer and wireless network layer is handled, and obtains short message from Radio Access Network Application Part.

Described method, wherein, the Optical Access Network between described wireless adapter and core network adopts two layers of bridging technology, and promptly the light path destination node is two layers of network element.

Described method wherein, adopts three layers of route technology between described wireless adapter and core network, promptly described light path destination node is a three-layer network unit.

A kind of wireless network layer provided by the present invention moves down the system and method for realizing network interconnection, owing to the Radio interface protocols stack is moved down into the base station by wireless network, again with the scheme of OAM network close coupling or loose coupling, wireless extension as the wired access of OAM, be applicable to fixed wireless, nomadic, portable and mobile access application, and provide a kind of evolution approach for the OAN Virtual network operator develops wireless network.

Description of drawings

Fig. 1 is the main network architecture schematic diagram of the FTTx network of prior art;

Fig. 2 is the frame of reference schematic diagram of the optical access network OAN of prior art;

Fig. 3 is the Access Network frame of reference schematic diagram of the 3G/2G communication system of prior art;

Fig. 4 is the Radio interface protocols trestle structure schematic diagram of prior art;

The enhancement mode mobile network architecture schematic diagram that Fig. 5 moves down for system wireless interface function of the present invention;

Enhancement mode mobile network's protocol stack of the interface schematic diagram of Fig. 6 (a)-(c) move down for wave point function of the present invention; Wherein, the structural representation of the enhancement mode mobile network user face that (a) moves down for system wireless interface function of the present invention; (b) structural representation of the enhancement mode mobile network's chain of command that moves down for system wireless interface function of the present invention; (c) be system of the present invention IP-based Megaco/H.248 protocol stack schematic diagram;

Fig. 7 is the enhancement mode mobile network architecture schematic diagram that the wave point function of first embodiment of system of the present invention moves down;

Fig. 8 is the enhancement mode mobile network architecture schematic diagram that the wave point function of second embodiment of system of the present invention moves down;

Fig. 9 is the optical access network of first preferred embodiment of the inventive method and the structural representation of wireless network interconnection;

Figure 10 is the schematic diagram when the integrated network element of user's face: BS+WA separates with the AF network element in the network interconnection scheme of first preferred embodiment of the inventive method;

Figure 11 is the schematic diagram when user's face BS, WA and AF network element are integrated in the network interconnection scheme of first preferred embodiment of the inventive method;

Figure 12 is the schematic diagram when the integrated network element of chain of command: BS+WA separates with the AF network element in the network interconnection scheme of second preferred embodiment of the inventive method;

Figure 13 is the schematic diagram when user's face: BS, WA and AF network element are integrated in the network interconnection scheme of second preferred embodiment of the inventive method;

Figure 14 is Optical Access Network OAN and the wireless network interconnect scheme schematic diagram in second preferred embodiment of the inventive method;

Figure 15 is user's face: BS, WA and the integrated configuration diagram of ONU/ONT network element in the network interconnection scheme in second preferred embodiment of the inventive method;

Figure 16 is chain of command: BS, WA and the integrated configuration diagram of ONU/ONT network element in the network interconnection scheme in second preferred embodiment of the inventive method.

Embodiment

Below in conjunction with accompanying drawing, will be described in more detail each preferred embodiment of the present invention.

Wireless network layer of the present invention moves down the system and method for realizing network interconnection, Radio Access Network RAN is done function decompose defined function unit: BS, wireless adapter WA (Wireless Adaptor) and wireless interface network servo (RAN-Server); Wherein the function of BS, WA and RAN-Server is divided as follows:

For the RAN of WCDMA/GPRS/TD-SCDMA network, BS, WA and RAN-Server Function Decomposition are as shown in table 1, and WA function wherein can move down into BS.

Table 1BS, WA and RWG Function Decomposition

Core concept of the present invention is: control separates with bearing function to base station controller (as RNC), function is broken down into that two network elements---wireless interface network servo RAN-Server and base station add wireless adapter BS+WA, part RRC, the PDCP/BMC/RLC/MAC etc. of original Radio interface protocols such as RNL protocol stack are moved down into the WA of base station such as Node B Node B, and the major function of RAN-Server provides migration between the BS+WA, the management of many cell radio resources, system information broadcast, paging control, and the functions such as forwarding of existing RANAP/RNSAP message; In addition, RAN-Server also comprises the function of the switching controls between wired access and wireless access, is used to support the control of switching mutually between wired access and wireless access.Adopt the annexation of one-to-many or multi-to-multi between RAN-Server and the BS+WA.

New wireless network architecture of the present invention as shown in Figure 5, the interface between UE network element and BS+WA network element adopts former UE and UTRAN interface Uu, the Iub interface between Node B and RNC no longer exists; Adopt the interface Iub-C of redetermination between BS+WA network element and RAN-Server; Interface Iu-D between BS+WA and CN adopts the user's face of the interface Iu between former RNC and SGSN; Interface Iu-C between RAN-Server and CN adopts the chain of command of the interface Iu between former RNC and SGSN; Adopt the chain of command of the Iur interface between former RNC between RAN-Server; The BS+WA network element interface that is increased in addition adopts and connects the Iur mouth between former RNC.Enhancement mode mobile network's interface definition that the wave point function moves down and protocol stack thereof are as shown in Figure 6.

The present invention further does control to CN PS territory and decomposes with the carrying separation function, and a kind of functional decomposition methods is the defined function unit: Serving GPRS Support Node server S GSN-Server, Serving GPRS Support Node gateway SGSN-GW, Gateway GPRS Support Node server GGSN-Server and Gateway GPRS Support Node gateway GGSN-GW.SGSN-Server comprises the chain of command function of former SGSN, realizes SGSN chain of command functions such as mobile management, connection management, session management; SGSN-GW comprises the user plane functions of former SGSN, and GGSN-Server comprises the chain of command function of former GGSN, and GGSN-GW comprises the user plane functions of former GGSN.

Corresponding therewith, new wireless network architecture of the present invention as shown in Figure 7.Wherein, RAN is with the RAN of Fig. 5; In CN, the interface Iu-D between SGSN-GW and BS+WA adopts the user's face of the interface Iu between former RNC and SGSN; Interface Iu-C between SGSN-Server and RAN-Server adopts the chain of command of the interface Iu between former RNC and SGSN; Interface Gn-D between SGSN-GW and GGSN-GW adopts the user's face of the interface Gn between former GGSN and SGSN; Interface Gn-C between SGSN-Server and GGSN-Server adopts the chain of command of the interface Gn between former GGSN and SGSN; H.248, the Megaco of interface employing IETF between SGSN-Server and SGSN-GW or ITU-T also can adopt brand-new protocol stack, and SGSN-Server manages SGSN-GW by Megaco/H.248; H.248, the Megaco of interface employing IETF between GGSN-Server and GGSN-GW or ITU-T also can adopt brand-new protocol stack, and GGSN-Server manages GGSN-GW by Megaco/H.248, shown in Fig. 6 (c).

In second preferred embodiment of the present invention, CN PS domain-functionalities decomposition method is the defined function unit: comprehensive GPRS Support Node server I GSN-Server and comprehensive GPRS Support Node gateway IGSN-GW.IGSN-Server comprises the chain of command function of former SGSN and GGSN, and IGSN-GW comprises the user plane functions of former SGSN and GGSN.

Corresponding therewith, the new wireless network architecture of the present invention as shown in Figure 8.Wherein, RAN is with the RAN of Fig. 5; In CN, the interface Iu-D between IGSN-GW and BS+WA adopts the user's face of the interface Iu between former RNC and SGSN; Interface Iu-C between IGSN-Server and RAN-Server adopts the chain of command of the interface Iu between former RNC and SGSN; H.248, the Megaco of interface employing IETF between IGSN-Server and IGSN-GW or ITU-T also can adopt brand-new protocol stack, and IGSN-Server manages IGSN-GW by Megaco/H.248.

Thus, first preferred embodiment of optical access network OAN of the present invention and wireless network interconnecting method as shown in Figure 9,3G/2G cordless communication network BS and WA reference point (a) interconnection in OAN by AF and OAN, RAN-Server and CN and the OLT reference point v interconnection in OAN.The resource that this scheme can make the 3G/2G Construction of Access utilize former OAN to lay as far as possible, as: there has been the network of FTTB/FTTC in operator, 3G/2G cordless communication network equipment is located at the copper cash resource that the building directly utilizes the building, insert the OAN net by ONU, thereby reduced the extra wiring of cordless communication network.Thereby reduce 3G/2G Construction of Access cost, belong to the close coupling scheme.

This option b S is integrated with the WA network element, the integrated network element of BS+WA can separate by network element with AF, interconnects with reference point T; Or BS, WA and AF network element become one.RAN-Server can become one with the OLT network element.

With WCDMA is example, the protocol stack under UE-＞Node B-＞ONU-＞OLT-＞Core Network path, user's face as shown in Figure 10 and Figure 11, chain of command such as Figure 12 and shown in Figure 13.BS, WA and RAN-Server Function Decomposition are as shown in table 1; Core Network has comprised SGSN and GGSN; SGSN and GGSN also can unite two into one, and form new network element IGSN; Core Network also can be by the scheme of Fig. 7 and Fig. 8.

Based on above-mentioned protocol stack structure, UE at first sets up radio resource control RRC by the chain of command protocol stack and connects when data communication, begin to carry out the foundation of RAB after consulting with core net, and the process of setting up of RAB is accompanied by the foundation of user's face RB.After RAB set up successfully, the user just can transmit data by the user plane bearer of having set up.The compression/de-compression function of PDCP can be enabled, and also can not enable.Signaling set up flow process be UE be connected with RRC between the UTRAN set up successfully after, UE sets up by RNC and is connected with the signaling of CN, also cries " the NAS signaling is set up flow process ", is used for the Signalling exchange NAS information of UE and CN, as authentication, service request, connection foundation etc.A kind of transmission course of the user face data of having enabled the compression/de-compression function is as follows:

Up: the application layer data of UE is packaged into the PDCP agreement of issuing RNL behind IP bag or the PPP bag, the PDCP agreement is compressed the data packet head, and the data after will compressing are passed to the RLC/MAC of RNL, the RLC/MAC agreement receive processing data packets intact after, issue WCDMA physical layer RFL after increasing the RLC/MAC header, physical layer is carried out operation such as coded modulation and is sent to UTRAN by the Uu interface to the packet that receives.The WCDMA physical layer RFL of BS+WA receives the MAC/RLC agreement that sends to RNL after the data among the UTRAN, the MAC/RLC agreement is removed protocol header successively, merge through reorganization, data are issued the PDCP agreement of RNL, the PDCP agreement decompresses compressed packet header.The data that BS+WA will separate out by GTP tunnel are forwarded to CN through the Iu-D interface, Iu-D interface GTP tunnel agreement, UDP and IP between WA and CN can directly be carried on the OAN network, the OAN network (for example can adopt two layers of bridging technology between WA and CN, ethernet bridging), promptly AF, ONU/ONT and OLT are all two layers of network element; Or between WA and CN, adopt three layers of route technology (for example, three layers of route of IP), promptly AF, ONU/ONT and OLT are all three-layer network unit.

BS+WA is divided into the LNK frame with GTP/UDP/IP bag, is carried on then that physical layer is sent to AF between Node B and AF; AF is converted to ONU LNK frame with the LNK frame, is carried on then that physical layer is sent to ONU/ONT between ONU/ONT and AF; ONU/ONT is converted to the ODN LNK frame that is fit to optical transmission with ONU/ONT LNK frame, carries out the electric light conversion then and is carried on the ODN physical layer, is sent to OLT through optical fiber; OLTPHY carries out opto-electronic conversion and obtains ODN LNK frame, ODN LNK frame is converted to the LNK frame again and is sent to CN and does further processing.

At CN, SGSN/SGSN-GW does the transport network layer of Iu-D interface and wireless network layer is handled, and receives data from the GTP tunnel of Iu-D interface and sends to GGSN/GGSN-GW with GTP tunnel through the Gn/Gn-D interface again.The data that GGSN/GGSN-GW receives from the GTP tunnel of Gn/Gn-D interface are exactly IP bag or the PPP bag of UE, and GGSN/GGSN-GW issues external network with the form of IP bag or ppp protocol bag by the Gi interface again; Perhaps, IGSN/IGSN-GW does the transport network layer and the wireless network layer of Iu-D interface and handles, the data that receive from the GTP tunnel of Iu-D interface are exactly IP bag or the PPP bag of UE, and IGSN/IGSN-GW issues external network with the form of IP bag or ppp protocol bag again.

Descending and up similar, just the PDCP agreement among the BS+WA is responsible for the header of downlink data is compressed, and the PDCP agreement among the UE is responsible for the header of downlink data is decompressed.

The transmission course of the chain of command signaling of this embodiment of the invention is as follows:

Up: the RRC of UE is packaged into the RLC/MAC that packet is passed to RNL with the signaling message of GMM/SM/SMS message or this layer, the RLC/MAC agreement receive processing data packets intact after, issue WCDMA physical layer RFL after increasing the RLC/MAC header, physical layer is carried out operation such as coded modulation and is sent to UTRAN by the Uu interface to the packet that receives.The WCDMA physical layer RFL of BS+WA receives the MAC/RLC agreement that sends to RNL after the data among the UTRAN, the MAC/RLC agreement is removed protocol header successively, merge through reorganization, data are issued the RRC agreement of RNL, the RRC agreement is directly resolved signaling message usually, carry out respective handling, as connecting foundation, measurement report etc.

But for moving between the BS+WA, many cell radio resource management, system information broadcast, paging control, and the functions such as forwarding of RANAP/RNSAP message, the RRC of BS+WA will directly notify result by Iub-C interface wireless network layer (as FP) and transport network layer (as IP/LNK/PHY) carrying the rrc layer of RAN-Server corresponding signaling message, deliver the CN processing by RAN-Server through the wireless network layer (as NANAP) and the transport network layer (as SCCP/M3UA/SCTP/IP/LNK/PHY, wherein M3UA/SCTP/IP is the signaling bear layer Signaling Bearer among the figure) of Iu-C interface again.The RRC of the Iub-C interface between WA and RAN-Server, wireless network layer (as FP or NBAP) and transport network layer (as IP layer or signaling bear layer Signaling Bearer (for example SCTP/IP)) can directly be carried on the OAN network, the OAN network (for example can adopt two layers of bridging technology between WA and RAN-Server, ethernet bridging), promptly AF, ONU/ONT and OLT are all two layers of network element; Or between WA and RAN-Server, adopt three layers of route technology (for example, three layers of route of IP), promptly AF, ONU/ONT and OLT are all three-layer network unit.

BS+WA is divided into the LNK frame with the FP/IP of Iub-C interface or NBAP/SCTP/IP bag, is carried on then that physical layer is sent to AF between Node B and AF; AF is converted to ONU LNK frame with the LNK frame, is carried on then that physical layer is sent to ONU/ONT between ONU/ONT and AF; ONU/ONT is converted to the ODN LNK frame that is fit to optical transmission with the ONU/ONTLNK frame, carries out the electric light conversion then and is carried on the ODN physical layer, is sent to OLT through optical fiber; OLT PHY carries out opto-electronic conversion and obtains ODN LNK frame, the ODNLNK frame is converted to the LNK frame again and is sent to RAN-Server and does further processing.RAN-Server does the transport network layer and the wireless network layer of Iub-C interface and handles, from FP, obtain the RNL frame of RRC, send to the MAC/RLC agreement of RNL, the MAC/RLC agreement is removed protocol header successively, merge through reorganization, data are issued RRC, the RRC agreement decompresses compressed packet header, obtain packet, handle the network element that packet is mail to CN by the wireless network layer and the transport network layer of Iu-C interface then.

At CN, IGSN/SGSN/IGSN-Server/SGSN-Server does Iu-C interface transport network layer and wireless network layer is handled, and obtains GMM/SM/SMS message from RANAP.

Similarly, UE receives the signaling message of core net and the RRC signaling message of Access Network by opposite process.In the above-mentioned protocol stack transaction module, rrc layer is realized by RAN-Server and base station respectively, like this at function difference among the RRC, connect being similar to fast, functions such as feedback, scheduling of resource realize in the base station fast, and be similar to some data managements, storage and need to handle a plurality of base stations in be received among the RAN-Server and realize.

Optical access network OAN of the present invention and wireless network interconnecting method second embodiment, as shown in figure 14, the BS of 3G/2G cordless communication network and WA and OAN broadband networks are in the interconnection of ODN place, and RAN-Server and CN and the OLT reference point v interconnection in OAN belongs to the close coupling scheme.The 3G/2G cordless communication network directly utilizes the optical network resource of OAN, as: there has been the network of FTTH in operator, and WiMAX equipment is located at the building and directly inserts the ODN net.The function of ONU/ONT that this option b S+WA is integrated, RAN-Server can become one with the OLT network element.

With WCDMA is example, the protocol stack under UE-＞Node B-＞ONU-＞OLT-＞Core Network path, and it is shown in Figure 15 that the user looks like, and chain of command is as shown in figure 16.BS, WA and RAN-Server Function Decomposition are as shown in table 1; Core Network has comprised SGSN and GGSN; SGSN and GGSN also can unite two into one, and form new network element IGSN; Core Network also can be by the scheme of Fig. 7 and Fig. 8.

The transmission course of user face data that the inventive method has been enabled the compression/de-compression function is as follows:

Up: the application layer data of UE is packaged into the PDCP agreement of issuing RNL behind IP bag or the PPP bag, the PDCP agreement is compressed the data packet head, and the data after will compressing are passed to the RLC/MAC of RNL, the RLC/MAC agreement receive processing data packets intact after, issue WCDMA physical layer RFL after increasing the RLC/MAC header, physical layer is carried out operation such as coded modulation and is sent to UTRAN by the Uu interface to the packet that receives.The WCDMA physical layer RFL of BS+WA+ONU/ONT receives the MAC/RLC agreement that sends to RNL after the data among the UTRAN, the MAC/RLC agreement is removed protocol header successively, merge through reorganization, data are issued the PDCP agreement of RNL, the PDCP agreement decompresses compressed packet header.The data that BS+WA+ONU/ONT will separate out by GTP tunnel are forwarded to CN through the Iu-D interface, Iu-D interface GTP tunnel agreement, UDP and IP between WA and CN can directly be carried on the OAN network, the OAN network (for example can adopt two layers of bridging technology between WA and CN, ethernet bridging), promptly OLT is two layers of network element; Or between WA and CN, adopt three layers of route technology (for example, three layers of route of IP), promptly OLT is a three-layer network unit.

BS+WA+ONU/ONT is divided into the ODN LNK frame that is fit to optical transmission with the GTP/UDP/IP bag, carries out the electric light conversion then and is carried on the ODN physical layer, is sent to OLT through optical fiber; OLT PHY carries out opto-electronic conversion and obtains ODN LNK frame, ODN LNK frame is converted to the LNK frame again and is sent to CN and does further processing.

Descending and up similar, just the PDCP agreement among the BS+WA+ONU/ONT is responsible for the header of downlink data is compressed, and the PDCP agreement among the UE is responsible for the header of downlink data is decompressed.

The transmission course of the chain of command signaling among this second embodiment of the present invention comprising as shown in figure 16:

Up: the RRC of UE is packaged into the RLC/MAC that packet is passed to RNL with the signaling message of GMM/SM/SMS message or this layer, the RLC/MAC agreement receive processing data packets intact after, issue WCDMA physical layer RFL after increasing the RLC/MAC header, physical layer is carried out operation such as coded modulation and is sent to UTRAN by the Uu interface to the packet that receives.The WCDMA physical layer RFL of BS+WA+ONU/ONT receives the MAC/RLC agreement that sends to RNL after the data among the UTRAN, the MAC/RLC agreement is removed protocol header successively, merge through reorganization, data are issued the RRC agreement of RNL, the RRC agreement is directly resolved signaling message usually, carry out respective handling, as connecting foundation, measurement report etc.But for moving between the BS+WA+ONU/ONT, many cell radio resource management, system information broadcast, paging control, and the functions such as forwarding of existing RANAP/RNSAP message, the RRC of BS+WA+ONU/ONT will directly notify result by Iub-C interface wireless network layer (as FP) and transport network layer (as IP/LNK/PHY) carrying the rrc layer of RAN-Server corresponding signaling message, deliver the CN processing by RAN-Server through the wireless network layer (as NANAP) and the transport network layer (as SCCP/M3UA/SCTP/IP/LNK/PHY, wherein M3UA/SCTP/IP is the signaling bear layer Signaling Bearer among the figure) of Iu-C interface again.The RRC of the Iub-C interface between WA and RAN-Server, wireless network layer (as FP or NBAP) and transport network layer (as IP layer or signaling bear layer Signaling Bearer (for example SCTP/IP)) can directly be carried on the OAN network, the OAN network (for example can adopt two layers of bridging technology between WA and RAN-Server, ethernet bridging), promptly OLT is two layers of network element; Or between WA and RAN-Server, adopt three layers of route technology (for example, three layers of route of IP), promptly OLT is a three-layer network unit.

BS+WA is divided into the ODN LNK frame that is fit to optical transmission with the FP/IP or the NBAP/SCTP/IP bag of Iub-C interface, carries out the electric light conversion then and is carried on the ODN physical layer, is sent to OLT through optical fiber; OLTPHY carries out opto-electronic conversion and obtains ODN LNK frame, ODN LNK frame is converted to the LNK frame again and is sent to RAN-Server and does further processing.RAN-Server does the transport network layer and the wireless network layer of Iub-C interface and handles, from FP, obtain the RNL frame of RRC, send to the MAC/RLC agreement of RNL, the MAC/RLC agreement is removed protocol header successively, merge through reorganization, data are issued RRC, the RRC agreement decompresses compressed packet header, obtain packet, handle the network element that packet is mail to CN by the wireless network layer and the transport network layer of Iu-C interface then.

Similarly, UE receives the signaling message of core net and the RRC signaling message of Access Network by opposite process.

To sum up, in the system and method for the present invention, problem at 3G/2G cordless communication network and OAN (as the network of PON technology access) interconnection, proposed wireless network the Radio interface protocols stack has been moved down into the base station, again with the scheme of OAM network close coupling or loose coupling, as the wireless extension of the wired access of OAM, be applicable to fixed wireless, nomadic, portable and mobile access application, for OAN Virtual network operator development wireless network provides a kind of evolution approach.Specifically, system and method for the present invention moves down into the base station with the Radio interface protocols stack and has following advantage:

1, reused standard I u/Iur interface to greatest extent, existing UTRAN framework can smooth evolution;

2, moving down of air protocol stack reduced the influence of propagation delay time to user QoS, for the QoS of high-speed data service provides assurance; Link load between BS and the base station controller can reduce greatly, because the message of Radio interface protocols chain of command RRC configuration Radio interface protocols user plane protocol can be in the inner execution of BS, and the RLC re-transmission can not re-use this link yet, transmission mechanism between BS and base station controller will greatly be simplified, improve the service efficiency of data transmission performance and Radio Access Network resource, solved prior art problems;

3, adopt chain of command to separate with user's face, can simplify the design of each entity, optimize the function of RNC and base station, SGSN and GGSN, make it more be applicable to the access network architecture that adopts distributed network structure, and guaranteeing has reaction mechanism fast between network and the UE, and have stronger flexibility and extensibility, for networking offers convenience, thereby more can adapt to following professional development;

4, adopt the network architecture of multi-to-multi, effectively avoided Single Point of Faliure;

5, be particularly suitable for and fixing, nomadic, portable and wireless access that low speed moves is used, be convenient to merge with cable network.

The tightly coupled mode that the present invention proposes based on Wireless/Mobile over Fiber (bearing optical fiber radio/mobile network), according to the characteristics of wireless/mobile access technology and OAN access technology are carried out complementation, enlarges the covering of network.Wireless/Mobile over Fiber mainly utilizes wireless coverage that the OAN coverage is replenished, the line resource that can make the 3G/2G Construction of Access as far as possible utilize former OAN network to lay, thus reduce 3G/2G Construction of Access cost.

The mode of the loose coupling that the present invention proposes to wireless network and OAN, is shared two server net resources as far as possible, carries out unified authentication, charging and customer service (Customer Care).

Should be understood that above-mentioned description at specific embodiment is comparatively detailed, but can not therefore be interpreted as the restriction to scope of patent protection of the present invention, scope of patent protection of the present invention should be as the criterion with claims.

Claims

1. a wireless network layer moves down the system that realizes network interconnection, and it comprises Radio Access Network and corresponding core network, and described Radio Access Network comprises the base station network element; It is characterized in that, described system is set to control and separates with bearing function, and comprise wireless interface network servo, be used for Radio interface protocols is moved down into the wireless adapter of base station, wherein, described base station and wireless adapter become one and become the base station and add the wireless adapter network element, and described Radio interface protocols comprises medium access control, Radio Link control, PDCP, cell-specific RRM and switching controls;

2. system according to claim 1 is characterized in that, also further comprises: the packet-switched domain of core network is done control decompose with the carrying separation function, the defined function unit comprises:

3. system according to claim 2 is characterized in that, in described core network, described Serving GPRS Support Node gateway and base station add the user's face of the interface employing interface Iu between the wireless adapter network element; Interface between described Serving GPRS Support Node server and wireless interface network servo adopts the chain of command of interface Iu.

4. system according to claim 3 is characterized in that, the interface between described Serving GPRS Support Node gateway and Gateway GPRS Support Node gateway adopts user's face of interface Gn; Interface between described Serving GPRS Support Node server and described Gateway GPRS Support Node server adopts the chain of command of interface Gn.

5. system according to claim 3, it is characterized in that, H.248 interface between described Serving GPRS Support Node server and Serving GPRS Support Node gateway adopts the Megaco of IETF or ITU-T, and described Serving GPRS Support Node server manages the Serving GPRS Support Node gateway by Megaco/H.248.

6. system according to claim 3, it is characterized in that, H.248 interface between described Gateway GPRS Support Node server and described Gateway GPRS Support Node gateway adopts the Megaco of IETF or ITU-T, and described Gateway GPRS Support Node server manages the Gateway GPRS Support Node gateway by Megaco/H.248.

7. system according to claim 1 is characterized in that, also further comprises: control is done in the PS territory of core network decomposed with the carrying separation function, the defined function unit comprises:

8. system according to claim 7 is characterized in that, in described core net, described comprehensive GPRS Support Node gateway and base station add the user's face of the interface employing interface Iu between the wireless adapter network element;

Interface between described comprehensive GPRS Support Node server and wireless interface network servo adopts the chain of command of interface Iu.

9. system according to claim 7 is characterized in that, the Megaco of the interface employing IETF between described Gateway GPRS Support Node server and Gateway GPRS Support Node gateway or ITU-T are H.248; Described Gateway GPRS Support Node server manages the Gateway GPRS Support Node gateway by Megaco/H.248.

10. a wireless network layer moves down the method that realizes network interconnection, comprising:

Medium access control in the Radio interface protocols, Radio Link control, PDCP, cell-specific RRM and switching control function are moved down in the wireless adapter, and described wireless adapter and base station become one and become the base station and add the wireless adapter network element;

Wireless communication network base station is added the reference point a interconnection in Optical Access Network by adaption function body and Optical Access Network of wireless adapter network element,

The reference point v interconnection in optical access network of the wireless interface network servo of cordless communication network and core net and light path destination node is to realize the interconnection of Optical Access Network and cordless communication network;

Wireless interface network servo provides the migration control that the base station adds the wireless adapter network element and the function of system information broadcast, supports the control of switching mutually between wired access and wireless access.

11. method according to claim 10 is characterized in that, described base station adds the wireless adapter network element and separates with described adaption function body network element, interconnects with reference point T;

12. method according to claim 11 is characterized in that, wireless interface network servo can become one with light path destination node network element.

13. method according to claim 12 is characterized in that, also comprises the transmission course of user face data:

Up:

14. method according to claim 13 is characterized in that, described step e 1 also comprises:

15. method according to claim 14 is characterized in that, described step e 1 also is included in the step of core network:

16. method according to claim 14 is characterized in that, described step e 1 also is included in the step of core network:

17. method according to claim 12 is characterized in that, also comprises the transmission course of chain of command signaling, comprising:

Up:

D2, described MAC/RLC protocol layer are removed protocol header successively, merge through reorganization, and data are issued the radio resource control layer of wireless network layer, and this radio resource control is direct parsing signaling message usually, carries out respective handling.

18. method according to claim 17, it is characterized in that, the radio resource control layer that described base station adds the wireless adapter network element directly carries the radio resource control layer of result being notified wireless interface network servo to corresponding signaling message by Iub-C interface wireless network layer and transport network layer, delivers the core network processing by wireless interface network servo through the wireless network layer and the transport network layer of Iu-C interface again.

19. method according to claim 18 is characterized in that, Radio Resource control, wireless network layer and transport network layer that described base station adds the interface between wireless adapter network element and wireless interface network servo directly are carried on the Optical Access Network.

20. method according to claim 19 is characterized in that, described method also comprises:

21. method according to claim 20, it is characterized in that, in the described core network, IGSN/SGSN/IGSN-Server/SGSN-Server does Iu-C interface transport network layer and wireless network layer is handled, and obtains short message from Radio Access Network Application Part.

22. according to claim 13 or 17 described methods, it is characterized in that, described base station adds two layers of bridging technology of Optical Access Network employing between wireless adapter network element and core network, and promptly adaption function body, network unit/optical network terminal and light path destination node are all two layers of network element.

23. according to claim 13 or 17 described methods, it is characterized in that, described base station adds adopts three layers of route technology between wireless adapter in the wireless adapter network element and core network, promptly adaption function body, network unit/optical network terminal and light path destination node are all three-layer network unit.

24. a wireless network layer moves down the method that realizes network interconnection, comprising:

Wireless communication network base station is added the wireless adapter network element to interconnect at the optical distribution network place by optical network unit or Optical Network Terminal and optical access network;

The reference point v interconnection in optical access network of the wireless interface network servo of cordless communication network and core net and light path destination node is to realize the interconnection of optical-fiber network and cordless communication network;

25. method according to claim 24, it is characterized in that, described base station adds the wireless adapter network element and separates with optical network unit or Optical Network Terminal network element, and with reference point a interconnection, described optical network unit or Optical Network Terminal network element and optical access network interconnect at the Optical Distribution Network place;

26. method according to claim 25 is characterized in that, wireless interface network servo and light path destination node network element become one.

27. method according to claim 26 is characterized in that, the transmission course of user face data comprises:

Up:

28. method according to claim 27, it is characterized in that, described base station adds the wireless adapter network element GPRS Tunnel Protocol/UDP/IP bag is divided into the optical distribution network data link frame that is fit to optical transmission, and carry out electric light conversion and be carried on the optical distribution network physical layer, be sent to the light path destination node through optical fiber; Described light path destination node physical layer is carried out opto-electronic conversion and is obtained the optical distribution network data link frame, the optical distribution network data link frame is converted to data link frame again and is sent to core network and does further processing.

29. method according to claim 28, it is characterized in that, in described core network, SGSN/SGSN-GW does the transport network layer and the wireless network layer of Iu-D interface and handles, and receives data from the GPRS Tunnel Protocol tunnel and sends to GGSN/GGSN-GW with the GPRS Tunnel Protocol tunnel through the Gn/Gn-D interface again;

30. method according to claim 29 is characterized in that, IGSN/IGSN-GW does the transport network layer and the wireless network layer of Iu-D interface and handles, and receives the IP bag or the PPP bag of subscriber equipment from the GPRS Tunnel Protocol tunnel of Iu-D interface;

31. method according to claim 27 is characterized in that, the transmission course of its chain of command signaling comprises:

Up:

The radio resource control layer of A4, subscriber equipment is packaged into packet with the signaling message of short message or this layer, passes to the RLC/MAC protocol layer of wireless network layer;

B4, RLC/MAC protocol layer are issued the WCDMA physical layer of subscriber equipment behind the increase RLC/MAC header after receiving packet, the WCDMA physical layer of subscriber equipment is carried out the coded modulation operation to the packet that receives, and sends to UTRAN by the Uu interface;

32. method according to claim 31 is characterized in that, its base station adds the wireless adapter network element FP/IP of Iub-C interface or NBAP/SCTP/IP bag is divided into the optical distribution network data link frame that is fit to optical transmission; And carry out electric light conversion and be carried on the optical distribution network physical layer, be sent to the light path destination node through optical fiber; Described light path destination node physical layer is carried out opto-electronic conversion and is obtained the optical distribution network data link frame, again the optical distribution network data link frame is converted to data link frame and is sent to wireless interface network servo.

33. method according to claim 32, it is characterized in that, described wireless interface network servo is done the transport network layer and the wireless network layer of Iu-C interface and is handled, obtain the RNL frame of Radio Resource control, send to the MAC/RLC protocol layer of RNL, the MAC/RLC protocol layer is removed protocol header successively, merge through reorganization, data are issued the radio resource control layer, the radio resource control layer decompresses compressed packet header, obtain packet, by the wireless network layer and the transport network layer processing of Iu-C interface packet is mail to core network then.

34. method according to claim 33, it is characterized in that, in the described core network, IGSN/SGSN/IGSN-Server/SGSN-Server does Iu-C interface transport network layer and wireless network layer is handled, and obtains short message from Radio Access Network Application Part.

35. according to claim 27 or 31 described methods, it is characterized in that, wireless adapter in described wireless communication network base station and wireless adapter network element and the Optical Access Network between core network adopt two layers of bridging technology, and promptly the light path destination node is two layers of network element.

36., it is characterized in that adopt three layers of route technology between described wireless adapter and core network, promptly described light path destination node is a three-layer network unit according to claim 27 or 31 described methods.