WO2006074608A1

WO2006074608A1 - A worldwide interoperability for microwave access network system and a method for accessing the core network using the access network

Info

Publication number: WO2006074608A1
Application number: PCT/CN2006/000045
Authority: WO
Inventors: Yong Xie; Jianjun Wu
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2005-01-14
Filing date: 2006-01-12
Publication date: 2006-07-20
Also published as: CN1805390A; CN100563183C

Abstract

A worldwide interoperability for microwave access network includes: a medium access control and physical layer module, a radio resource management module and a gateway module. A method for accessing the core network of the worldwide interoperability for microwave access network system includes the steps of: firstly, the terminal user station/ mobile station transmits the service request; then the worldwide interoperability for microwave access network creates the private physical link and service link and creates the user side example for transmitting the service data according to the service request; the core network and the worldwide interoperability for microwave access network ensure that the connection has been created successfully by the interaction. The present invention could realize the purpose of the worldwide interoperability for microwave access network accessing the core network.

Description

Microwave Access Global Interoperability System Access Network

And method for accessing core network using the access network

Technical field

The invention relates to a wireless broadband access technology, in particular to global access of microwave access

(WiMAX) System access network, and a method of applying the access network to access the core network. Background of the invention

In December 2001, the Institute of Electrical and Electronics Engineers (IEEE) promulgated the IEEE 802.16 standard for providing last-mile wireless broadband access in metropolitan area networks with operating bands between 10G and 66GHz. However, the current 802.16 standard mainly includes three standards of 802.16a, 802.16RevD and 802.16e. Among them, 802.16a is designed for non-line-of-sight (NLOS) broadband fixed access systems operating in the 2 ~ 11GHz band, and was approved by the IEEE in January 2003; 802.16RevD is an enhanced version of 802.16a, the main purpose is Support for Indoor Customer Premises Equipment (CPE); 802.16e is a further extension of IEEE 802.16a/d, which aims to increase data mobility in existing standards.

In order to promote the global promotion and application of the 802.16 series of standards, a number of equipment and component suppliers form a non-profit organization called the Global Interoperability Forum on Microwave Access, which aims to ensure the compatibility of broadband wireless access devices. Interoperability to accelerate the deployment of broadband wireless networks based on the IEEE 802.16 family of standards. In general, a system that implements wireless broadband access using the technology specified in the 802.16 series of standards is called a WiMAX system.

The 802.16 series of standards specifies the protocol layer of the air interface part of the WiMAX system, which mainly includes the physical layer (PHY) and the medium access control layer (MAC). The PHY layer physically performs modulation, demodulation, and codec operations on the signal; the MAC layer mainly implements the media access control function of the WiMAX system. The WiMAX system using the above physical layer and MAC layer has the advantages of wide coverage, strong scalability, and quality of service (QoS) control. details as follows:

1. Broadband wireless access and wide coverage.

The 802.16 standard is designed to achieve optimal performance in a variety of propagation environments including line of sight, near line of sight, and non-line of sight. WiMAX systems use Orthogonal Frequency Division Multiplexing (OFDM) modulation for maximum communication distances of up to 4km, supporting spectral efficiencies of up to 70Mbit/s. The system uses advanced network topologies such as mesh networks and antenna technologies such as beamforming, STC and antenna diversity to further improve coverage. These advanced technologies can also be used to increase spectral efficiency, capacity, multiplexing, and average and peak throughput per RF channel.

2. Strong scalability

At the physical layer, 802.16 supports flexible RF channel bandwidth and channel multiplexing, which can be used as a means of increasing cell capacity when the network is expanding. This standard also supports automatic transmit power control and channel shield testing, so it can be used as an additional tool in the physical layer to support cell planning and deployment and efficient use of spectrum. As the number of users increases, operators can redistribute the frequency through sectorization and cell splitting. In addition, WiMAX systems support multi-channel bandwidth, enabling device manufacturers to adapt to the unique regulatory regimes that governments use for frequency usage and distribution.

3. QoS control

The 802.16 WiMAX system provides multiple service types and service levels, in which the MAC layer is completely connected to the network, which fully guarantees the reliability of the service. In addition, the WiMAX system guarantees different bandwidth and delay for different services through optimized scheduling algorithms. Demand.

Although the above WiMAX system has such superior performance, the IEEE 802.16 series protocol only specifies the air interface part of the WiNMAX system wireless network architecture, and does not stipulate WiMAX access network (WiRAN) access such as the global mobile communication system. The network architecture and access method of the core network such as (GSM), Code Division Multiple Access (CDMA) system and Wideband Code Division Multiple Access (WCDMA) system, so the subscriber station (SS) of the WiMAX system And the mobile station (MSS) cannot access the core network through WiRAN, so the rich network resources and service functions in the core network cannot be used. Summary of the invention

In view of this, the main object of the present invention is to provide a microwave access global interworking system access network, which enables the SS/MSS of the WiMAX system to access the core network.

Another object of the present invention is to provide a method for accessing a global access system of a microwave access to a core network, which enables the SS/MSS of the WiMAX system to access the core network.

To achieve the above objective, the present invention provides a network architecture of an access network of a WiMAX system, and the specific implementation scheme is:

A microwave access global interworking system access network system, the access network system includes:

The RRM module is configured to perform radio resource allocation, and send the radio resource allocation result to the MAC&PHY module, and allocate resources to the GW module;

a MAC&PHY module, configured to receive a service request sent by the user terminal, request a radio resource from the RRM module, and establish a dedicated signaling connection between the user and the user terminal according to a result of the radio resource allocation process from the RM module; The service request is transmitted to the GW module;

The GW module is configured to establish a dedicated signaling connection between the MAC & PHY module and the core network, and forward the service request from the MAC&PHY module to the core network; receive and establish a service establishment request according to the core network, establish and core An instance of the user plane between the networks, and sends an instruction to the MAC&PHY module to inform the MAC&PHY module to establish a service data connection for the air interface.

The GW module includes: a signaling gateway SGW module and a data gateway DGW module; the RRM module includes a base station radio resource management BRRM module and a public radio resource management CRRM module; The BRRM module is configured to allocate and control local radio resources according to a radio resource request of a MAC&PHY module;

Receiving, by the SGW module, the service request, requesting, by the CRRM module, a resource for transmission according to the service request, and establishing a dedicated signaling connection with the MAC&PHY module according to the resource allocated by the CRRM module, and The service request is sent to the core network; the SGW module further receives a service establishment request sent from the core network, and notifies the MAC&PHY module to establish a service data connection with the user terminal for transmitting data;

The CRRM module is configured to interact with a BRRM module and an adjacent CRRM module, and allocate resources for the SGW module according to the resource allocation request of the SGW module;

The DGW module establishes a user plane instance according to the instruction of the SGW module, and transmits the service data of the core network to the user terminal through the MAC&PHY module.

The GW module includes: an SGW module and a DGW module;

The SGW module is configured to receive and perform a dedicated signaling connection between the SGW module and the MAC&PHY module and the core network according to the service request sent by the MAC&PHY module, and send a service request to the core network, and receive and send the data according to the core network. The service establishment request sends a notification to the DGW module to establish an instance of the user plane with the core network, and notifies the MAC&PHY module to establish a service data connection of the air interface;

The DGW module is configured to establish a user plane instance for performing service transmission with the core network; receive service data from the core network, and send the data to the user terminal through the MAC&PHY module.

The access network further includes:

a switching controller module, located in the base station BS, configured to receive and determine a candidate target base station according to a measurement report of a neighboring cell signal quality reported by the user terminal through the MAC&PHY module; and send a message query to the determined candidate target base station by using the GW module Whether the resource satisfies the situation and whether the service quality required by the terminal handover can obtain the guarantee information, so as to select the final target base station; and the handover execution information is sent to the user terminal through the MAC&PHY module; Receiving, according to the message that the terminal returned by the user terminal switches to the target base station, sending a message instruction to the MAC&PHY module to indicate release of the air interface resource used by the MAC&PHY module terminal, and sending a message to the GW module to instruct the GW module to perform the signaling interface between the base station and the core network. Migration to the user interface.

The MAC&PHY module, the RRM module, and the GW module are placed in a base station.

The base station is interconnected with the core network through an I-BO interface; the base stations are interconnected through an I-BS interface.

The access network further includes: a call controller module, configured to receive and determine, according to a call request forwarded by the core network through the GW module, a range of base stations that perform paging, and send a message to the determined each by using a GW module. The base station notifies the base station to perform paging; receives and determines whether to stop the paging process according to the paging result returned by the base station.

The call controller module is interconnected with the base station through an I-BP interface.

The access network further includes: a multicast broadcast service server module, configured to receive and return a response including the MBS service list information to the user terminal according to the multicast broadcast service request sent by the user terminal through the MAC&PHY module; by using MAC&PHY The module sends an authentication request message to the user terminal, and receives an authentication response message returned by the user terminal through the MAC&PHY module. The MAC&PHY module sends a message including the MBS downlink service parameter information to the user terminal. The MAC&PHY module sends the MBS service data to the user terminal.

The multicast broadcast service server module is interconnected with the base station through an I-BM interface.

The MAC&PHY module and the BRRM module are located in a base station, and the CRRM module, the SGW module, and the DGW module constitute a base station serving node for processing signaling that interacts with a core network, where the base station serving node is located at the base station and the core network. Between and The signaling and data information between the station and the core network is relayed.

The MAC&PHY module, the BRRM module, and the DGW module are located in a base station, and the CRRM module and the SGW module constitute a base station serving node for processing signaling that interacts with the core network, and the base station interacts with the core network. Information, the base station serving node is located between the base station and the core network, and transits signaling information between the base station and the core network. '

The base station serving node further includes a migration controller module, configured to receive a migration request from the SGW module, return a migration request response indicating acceptance of the handover request to the SGW module, and perform a migration operation.

The base station serving node further includes a broadcast multicast service server module, configured to receive, according to the multicast broadcast service request sent by the user terminal by using the MAC&PHY module, return, by the base station, the multicast broadcast service list information to the user terminal. Responding; sending an authentication request message to the user terminal through the MAC&PHY module, receiving a mother-right response message returned by the user terminal through the MAC&PHY module; transmitting a message including the multicast broadcast downlink service parameter information to the user terminal through the MAC&PHY module; transmitting more through the MAC&PHY module Broadcast broadcast service data to the user terminal.

The base station serving node further includes a paging controller module, configured to receive and perform paging according to a call request forwarded by the core network through the SGW module, and send a message to the SGW module through the SGW module. The determined base stations notify the base station to perform paging; receive and determine whether to stop the paging process according to the paging result returned by the base station.

The base station serving node further includes a handover controller module, configured to receive and determine a candidate target base station according to a measurement report of a neighboring cell signal quality reported by the user terminal through the MAC&PHY module; and determine the candidate target by using the SGW module. The base station sends a message to query whether the resource is satisfied and whether the service quality required by the terminal handover can obtain the guarantee information, so as to select the final target base station; and the handover is performed by the MAC&PHY module. W 200 lines of information to the end user terminal; receiving and transmitting, according to the message returned by the user terminal to the target base station, a message instruction to the MAC & PHY module to indicate release of the air interface resource used by the MAC & PHY module terminal, and sending a message to the SGW module to indicate the SGW module The migration between the base station and the core network signaling interface and the user plane interface is performed.

The base station further includes a handover controller module, configured to receive and determine a candidate target base station according to a measurement report of a neighboring cell signal quality reported by the user terminal by using a MAC&PHY module, and send, by using an SGW module, the determined candidate target base station. The message is queried for the resource satisfaction condition and whether the service quality required by the terminal handover can obtain the guarantee information to select the final target base station; the MAC&PHY module sends the handover execution information to the terminal user terminal; receives and switches according to the terminal returned by the user terminal. The message to the target base station sends a message instruction to the MAC&PHY module to indicate release of the air interface resource used by the MAC&PHY module terminal, and sends a message to the SGW module to instruct the SGW module to perform the migration of the base station and the core network signaling interface and the user plane interface.

The network system further includes:

a broadcast multicast service server module, configured to receive and respond to the multicast broadcast service request sent by the user terminal through the MAC&PHY module, and return, by the base station, a response including the multicast broadcast service list information to the user terminal; and send the authentication request message to the MAC&PHY module to a user terminal, receiving an authentication response message returned by the user terminal through the MAC&PHY module; transmitting, by the MAC&PHY module, a message including the multicast broadcast downlink service parameter information to the user terminal; and transmitting, by the MAC&PHY module, the multicast broadcast service data to the user terminal;

a paging controller module, configured to store information related to the subscriber station/mobile station entering the idle state; and when controlling the paging procedure, receiving and determining, according to the call request forwarded by the core network through the SGW module, the base station performing paging Range, and send a message to the determined base stations through the SGW module to notify the base station to perform paging, receive and according to the paging result returned by the base station Determine whether to stop the paging process;

The broadcast multicast service server module interacts with the base station service node through an I-BM interface, and the paging controller module interacts with the base station service node through an I-BP interface.

The base station serving node transfers signaling and data information between the base station and the core network by using an I-BB interface with the base station and an I-BNO interface with the core network, respectively. The CRRM module interacts with neighboring CRRMs through an I-BSSN interface between base station service nodes.

The base station serving node transits signaling information between the base station and the core network through an I-BB interface with the base station and an I-BNO interface with the core network, respectively; The data information is exchanged with the core network through the I-BSO interface; the CRRM module interacts with the adjacent CRRM through the I-BSSN interface between the base station service nodes.

The present invention also provides a method for accessing a core network by using a microwave access global interworking system access network system, the method comprising the following steps:

A. Microwave Access Global Interconnection System After receiving the service request from the user terminal, the access network first establishes a connection between itself and the core network for transmitting signaling between itself and the user terminal, and then establishes itself and a connection between the core networks and between the user and the user terminal for transmitting data;

B. After the connection establishment is completed in step A, the access network of the global access system of the microwave access informs the establishment of the core network service, and the core network informs the user terminal through the microwave access global interworking system access network that the service connection has been successfully established. And access to the core network.

The MAC&PHY module and the BRRM module are located in a base station, and the CRRM module, the SGW module, and the DGW module constitute a base station service node for processing signaling that interacts with the core network, and the microwave access globally is performed in step A. Method for establishing a connection between itself and a core network and for transmitting signaling between itself and a user terminal by an interworking system access network Including the following steps:

After the MAC&PHY module in the base station receives the service request carrying the service data amount information from the user terminal, the BRRM module in the base station completes the permission control operation and the local wireless according to the service data amount information and the network resource status. Resource allocation, then the MAC&PHY module establishes a dedicated signaling connection for transmitting signaling to the user terminal air interface, and transmits the service request to the SGW module in the base station service node;

A. The CRRM module in the base station serving node allocates resources according to the service data quantity information in the service request, and the SGW module allocates an instance to the user terminal according to the service request, and completes the use with the base station. a dedicated signaling connection for transmitting signaling;

A13. The SGW module in the base station serving node establishes a dedicated signaling connection with the core network for transmitting signaling, and assembles the service request of the user terminal into a protocol message with the core network, and requests a service from the core network. The core network then sends the service establishment request to the SGW module in the base station service node;

Step A: The method for establishing a connection between the self-interconnecting system and the core network and transmitting data between the self-interconnecting system and the user terminal is as follows:

The SGW module in the base station service node establishes a data gateway user plane instance for performing service data transmission with the core network for the current service, and implements service data transmission in cooperation with the user plane instance of the core network, and then the SGW module in the base station service node notifies The MAC&PHY module in the base station establishes a service data connection of the air interface, and after the air interface connection is successfully established, returns a connection success message to the core network.

The method for notifying the establishment of the core network service by the accessing network of the global access system in the step B is: the SGW module in the serving node of the base station notifies the establishment of the core network service;

The core network in step B notifies the user terminal through the microwave access global interworking system access network The method for successfully establishing the service connection is: the core network passes through the base station

The MAC & PHY module and the SGW module in the base station service node notify the user terminal that the current service connection has been successfully established.

Wherein, the MAC & PHY module, the BR M module and the DGW module are located in a base station, and the CR M module and the SGW module constitute a base station service node for processing signaling that interacts with the core network, and the microwave in step A A method for accessing a global interworking system access network to establish a connection between itself and a core network and for transmitting signaling between itself and a user terminal includes the following steps:

After the MAC&PHY module in the base station receives the service request carrying the service data volume information from the user terminal, the BRRM module in the base station completes the permission control operation and the local wireless according to the service data volume information and the network resource status. Resource allocation, then the MAC&PHY module establishes a dedicated signaling connection for transmitting signaling to the user terminal air interface, and transmits the service request to the SGW module in the base station service node;

A22. The CRRM module in the base station serving node allocates resources according to the service data amount information in the service request, and the SGW module allocates an instance to the user terminal according to the service request, and completes the use with the base station. a dedicated signaling connection for transmitting signaling;

A23. The SGW module in the base station serving node establishes a dedicated signaling connection with the core network for transmitting signaling, and assembles the service request of the user terminal into a protocol message with the core network, requests a service from the core network, and the core The network then sends a service establishment request to the SGW module in the base station service node;

The SGW module in the base station serving node notifies the base station to establish a data gateway user plane instance for performing service data transmission with the core network for the current service, to cooperate with the user plane of the core network. The instance implements service data transmission, and then the SGW module in the base station serving node notifies the MAC&PHY module in the base station to establish an air interface service data connection, and after the air interface connection is successfully established, returns a connection success message to the core network.

The method for notifying the establishment of the core network service by the accessing network accessing the global interworking system in step B is as follows: the SGW module in the base station serving node notifies the core network service to establish;

The method for the core network to notify the user terminal that the service connection has been successfully established through the microwave access global interworking system access network is: the core network is notified by the MAC & PHY module in the base station and the SGW module in the base station service node. The user terminal has successfully established this service connection.

The method further includes: before the core network sends the service establishment request to the base station service node, the method further includes:

The core network authenticates the user terminal. If the authentication succeeds, the core network allows the service request; otherwise, the core network rejects the service request and ends the process of accessing the core network.

The migration controller is set in the base station service node, the method further includes: after receiving the migration request from the SGW module, the migration controller module in the base station service node returns to the SGW module to indicate that the migration request is accepted. The migration request responds and performs the migration operation.

The step A includes:

A31. The MAC&PHY module in the microwave access global interworking system access network requests radio resource allocation from the RRM module according to the received service request of the user terminal, and establishes a dedicated signaling connection of the air interface of the user terminal according to the radio resource allocated by the RJRM module. And transmitting the service request to the GW module;

A32. The GW module separately establishes a GW module according to the received service request. a dedicated signaling connection between the MAC&PHY module and the core network, and sending a service request to the core network through an interface between the GW module and the core network;

A33. The GW module establishes a user plane instance between the GW module and the core network according to the service establishment request sent by the core network, and notifies the MAC&PHY module to establish a service data connection of the air interface; and the MAC&PHY module establishes a service data connection of the air interface.

The multicast broadcast service server is set in the network, and the method further includes:

The user terminal sends a message to the broadcast multicast service server through the MAC&PHY module to query the broadcast multicast service content list. After receiving the message, the broadcast multicast service server returns a broadcast multicast service content list and a multicast IP address to the user terminal. Response of port number information;

After receiving the multicast IP address/port number of the broadcast multicast service server service, the user terminal sends the information to the base station serving node through the base station; after receiving the information, the base station service node performs broadcast multicast with the broadcast multicast service server. The authentication process of the service content is received; after the authentication is completed, the base station serving node sends a message including the broadcast multicast downlink service parameter information to the user terminal by using the base station; after receiving the message, the user terminal sends a message to the base station service node by using the base station, Obtaining a broadcast multicast service key for decrypting broadcast multicast service data; the base station serving node returns, by the base station, a response message including a broadcast multicast service key to the user terminal to the user terminal;

The user terminal uses the obtained broadcast multicast downlink service parameter and the broadcast multicast service key information to receive the related broadcast multicast service data sent by the broadcast multicast service server through the base station, and enters the normal broadcast multicast service receiving state.

The multicast broadcast service server is located in the base station service node or exists in the access network separately.

The paging controller is set in the access network, and the method further includes: When the core network needs to page a terminal, the core network sends a paging request message to the access network, and the SGW module forwards the paging request message to the paging controller.

After receiving the paging request message, the paging controller determines the range of the base station to perform paging according to the paging area information carried in the paging request message, and notifies the determined base stations to perform paging through the SGW module;

The paging controller determines whether to stop the paging process based on the paging result of each base station.

The paging controller is located in the base station serving node or exists independently in the access network.

The method further includes: setting a handover controller in the access network, the method further comprising: after receiving, by the MAC&PHY module, the measurement report of the quality of the neighboring cell signal reported by the user terminal, the handover controller determines the candidate target base station according to the measurement report;

The handover controller uses the SGW module to perform query resource satisfaction for each candidate target base station and whether the required service quality of the terminal handover can obtain the guarantee information; the handover controller selects the final target base station according to the acquired information, and passes the MAC&PHY module. Sending switching execution information to the user terminal;

The user terminal performs an operation of switching to the target base station, and returns a message that the terminal switches to the target base station to the handover controller. After receiving the message, the handover controller instructs the MAC&PHY module to dry the air interface resource for the terminal, and instructs the SGW module to perform the message. Migration to the interface between the core network signaling plane and the user data plane interface.

The switching controller is located in the base station or the base station serving node.

Wherein, the method further comprises:

When the handover or migration occurs, the base station serving nodes exchange or migrate information through the I-BSSN interface; the base stations exchange or migrate information through the I-BS interface.

The base station serving node and the base station are in the same microwave access global interworking The system access network or the different microwave access global interworking system access network.

By applying the invention, the WiMAX access network can access the core network. Specifically, the present invention has the following beneficial effects:

1. The present invention provides an access network and method for accessing a WiMAX access network to various core networks of an operator, so that the user terminal can access the core network through the WiMAX access network.

2. In the present invention, through the work of the SGW module and the DGW module, the control plane and the user plane protocol stack that interact with the existing core network are adapted, and the existing service model of the operator is fully utilized, thereby saving the network construction cost and improving the WiMAX cloth. Net speed.

3. The present invention constructs a BSSN capable of centrally controlling and coordinating handover between adjacent BSs, ensuring hierarchicality of handover control between BSs.

4. The present invention also provides a BS that implements interconnection through an I-BS interface, and the foregoing BS can perform functions such as information interaction and handover, and ensures flexibility of handover control between BSs.

5. The present invention can facilitate a plurality of wireless access networks and wireless access technologies to access existing core network services of operators, and facilitate users to use existing services of operators through multiple types of terminals, and the use of services will increase network operators. Profitable space.

6. The present invention can fully guarantee the characteristics and capabilities of the WiMAX system network carrying IP, without modifying the IP protocol and application data flow through the link, without requiring a special gateway, and can construct a true all-IP network, making full use of the IETF standard components. / Protocol, to make the wireless link transparent, end-to-end IP connection for IP applications. BRIEF DESCRIPTION OF THE DRAWINGS

1 is a schematic diagram showing the structure of a WiMAX system access network according to the present invention;

2 is a schematic diagram of a basic network architecture of a WiMAX system according to a preferred embodiment of the present invention; FIG. 3 is a schematic diagram of a network architecture of a WiMAX system according to Embodiment 1 of the present invention;

4 is an independent MBS Server and Paging Controller module according to Embodiment 1 of the present invention; Schematic diagram of the existing WiMAX system network architecture;

5 is a schematic diagram of a network architecture of a WiMAX system according to Embodiment 2 of the present invention;

6 is a schematic diagram of a network architecture of a WiMAX system in which an MBS Server and a Paging Controller module exist independently according to Embodiment 2 of the present invention;

7 is a schematic diagram of a network architecture of a WiMAX system according to Embodiment 3 of the present invention;

8 is a schematic diagram of a network architecture of a WiMAX system in which an MBS Server and a Paging Controller module exist independently according to Embodiment 3 of the present invention;

9 is a schematic diagram of a network architecture of a WiRAN accessing a core network according to Embodiment 4 of the present invention; FIG. 10 is a schematic diagram of a network architecture of a WiRAN accessing a WCDMA PS core network according to Embodiment 4 of the present invention. Mode for carrying out the invention

In order to make the objects and technical solutions of the present invention more comprehensible, the present invention will be further described in detail below with reference to the accompanying drawings.

The main idea of the present invention is to provide a WiMAX system access network, which includes: a MAC&PHY module, a gateway (GW) module, and a radio resource management (RRM) module. The MAC&PHY module is connected to the terminal SS/MSS through the air interface. After receiving the SS/MSS service request, the MAC&PHY module establishes the dedicated signaling for transmitting signaling of the SS/MSS air interface according to the radio resource allocated by the RRM module. Connecting, and forwarding the service request to the GW module; the RRM module is configured to allocate the radio resource according to the service request; the GW module receives and establishes a dedicated signaling connection between the GW module and the core network and the MAC&PHY module according to the received service request And establishing a user plane instance for performing service transmission with the core network according to the service establishment request sent by the core network, and sending an instruction to notify the MAC&PHY module to establish a service data connection of the air interface. Based on the foregoing access network architecture and working principle, a method for accessing a WiMAX system to a core network is provided. FIG. 1 is a schematic structural diagram of a WiMAX system access network (WiRAN) according to the present invention, including: a MAC&PHY module, a GW module, and an RRM module. Among them, the AC&PHY module is responsible for connecting the terminal SSMSS, completing the processing of the air interface part, such as encoding/decoding, modulation/demodulation, mapping/demapping, connection establishment and maintenance, etc., and keeping the terminal synchronized with WiRAN.

The RRM module is responsible for radio resource management in the base station (BS) corresponding to the RRM module in the WiRAN, and completes radio resource management of the cell/sector of the BS, specifically including management and scheduling of BS air interface radio resources, and user QoS in the BS domain. Management, and adaptation to the radio link channel environment, etc., is also responsible for radio resource management and scheduling when the SS/MSS switches between adjacent BSs, and is responsible for inter-VARAN between multiple BSs and multiple WiRANs. Radio resource management and scheduling, and QoS management.

The GW module includes a signaling plane and a user plane gateway function, and is responsible for signaling transmission of the control plane in the WiMAX system, mainly performing operations such as adaptation of the signaling plane protocol stack of the WiRAN and the core network device, and transmission of the signaling protocol; and is responsible for WiMAX. The data transmission of the user plane in the system completes the adaptation of the WiRAN and the core network device user plane protocol stack and the transmission of user data. Therefore, the GW module can also be separated from the signaling plane and the user plane, and the GW module is divided into a signaling gateway (SGW) module and a data gateway (DGW) module, which are respectively responsible for adapting the signaling plane and the user plane to the core network. .

It can be seen that the above WiRAN is connected to the terminal SS MSS through the MAC&PHY module, and is connected to the core network through the GW module. The WiRAN receives the SS/MSS service request through the MAC&PHY module, and performs information exchange between the GW module and the core network to establish a connection between the WiRAN and the SS/MSS and the core network to implement interworking between the terminal SS/MSS and the core network.

In addition, since the location change may occur during the service transmission between the terminal SS/MSS and the core network, the above-mentioned network architecture further includes a paging controller (HO Controller) paging controller (Paging Controller). And multicast broadcast service server Modules such as (MBS Server) to implement migration and switching of terminal SS/MSS in WiMAX systems. The HO Controller is set in the base station, and is used for performing coordination and decision control of the inter-BS handover process. When the handover between the BSs is completed, the signaling interface between the BS and the core network is migrated, and the BS and the core network are responsible. Paging Controller is used to perform paging control message delivery and paging process scheduling; MBS Server is used for multicast broadcast service (MBS) scheduling, process processing, and MBS services. hair. The MBS server-side is the entry of the content provider, on the other hand, it is necessary to plan the transmission of the multicast broadcast data of the subordinate BS, and distribute the multicast broadcast data to the subordinate BS.

The MBS Server and the Paging Controller can be distributed in the vicinity of the access network as needed. In the series, one MBS Server and Paging Controller can be directly connected to multiple BSs. The Paging Controller is interconnected with the BS through the I-BP interface, and the MBS Server passes. The I-BM interface is interconnected with the BS. At present, the core network of most wireless communication systems supports Paging Controller, and some support MBS Server. Therefore, the Paging Controller and MBS Server can be placed according to the actual network configuration and needs.

The invention will now be described in detail by the preferred embodiments.

Preferably, the RRM module includes: a base station radio resource management (BRRM) module, a public radio resource management (CRRM) module, and the GW module includes: a signaling gateway (SGW) module and a data gateway (DGW) module. The BRRM module is responsible for radio resource management within the base station (BS), and completes radio resource management of the intra-cell/sector of the BS, including management of BS air interface radio resources, management of user QoS in the BS domain, and channel environment of the radio link. Adaptive process; CRRM module is responsible for wireless resource management and scheduling and QoS management between multiple BSs within WiRAN, multiple WiRAN; SGW module is responsible for signaling processing of control plane in WiMAX system, mainly completing WiRAN and The operation of the core network device signaling plane protocol stack adaptation and signaling protocol processing, on behalf of the control plane; DGW The module is responsible for the data transmission of the user plane in the WiMAX system, and completes the transmission of the data of the user plane of the BS and the core network device, representing the user plane. In the above WiMAX access network architecture of the embodiment, the MAC&PHY module in the WiRA is connected to the BRR module and the DGW module, and is connected to the SGW module. The SGW module is also connected with the CRRM module and the DGM module. In addition, the WiRAN passes the MAC&PHY module. It is connected to the terminal SS or MSS, and is connected to the core network through the SGW module and the DGW module. The above MAC&PHY module, BRRM module, CK M module, SGW module and DGW module together form WiRAN.

When using WiRAN to access the core network, after receiving the service request from the terminal SS/MSS, the WiRAN interacts with the core network to establish a user plane and control plane channel from the terminal SS/MSS to the core network to implement the terminal. Interworking between SS/MSS and the core network. The details are as follows: As shown in FIG. 2, when the WiRAN of the present invention accesses the core network, the MAC&PHY module is configured to receive an access request from the user terminal, request wireless resources from the BRRM module, and allocate wireless according to the BRRM module. a resource, establishing a dedicated signaling connection with the user terminal for transmitting signaling, and forwarding the service request from the user terminal to the SGW module;

The BRRM module is configured to allocate and control local radio resources according to the radio resource request of the MAC&PHY module, that is, collect and measure radio resource information, exchange RRM control information with the MS, perform power control, monitor MAC&PHY module functions, and modify broadcast message content. Control allocation of local BS radio resources, auxiliary handover, service flow management, and other decisions and behaviors based on radio resource information;

After receiving the service request, the SGW module requests the C RM module for the resource for transmission according to the service request, and establishes a dedicated message for transmitting signaling with the MAC & PHY module according to the resource allocated by the CRRM module. The physical connection is sent, and the service request is sent to the core network; the SGW module is further configured to receive a service establishment request sent from the core network, and notify the MAC&PHY module to establish a service data connection with the user terminal for transmitting data; The CRRM module is configured to interact with the BRRM module, and interact with the adjacent CRRM module through the I-BSSN interface, and allocate resources to the SGW module according to the resource allocation request of the SGW module. Specifically, the CRRM module collects the radio resources reported by the BRRM module. Information, exchanging resources and control information with a CRRM module of a neighboring node, and completing a radio resource algorithm including handover, load balancing, etc. according to the information and making a decision;

The DGW module establishes a user plane instance according to the instruction of the SGW module, and after the WiMAX system successfully accesses the core network, cooperates with the user plane instance for the current service in the core network, and transmits the service data of the core network to the user through the MAC&PHY module. terminal.

Since the location change may occur during the service transmission between the terminal SS/MSS and the core network, in the above network architecture, a handover controller (HO Controller), a migration controller (Relocation Controller), and a seek are also required. Modules such as the Paging Controller and the Broadcast Multicast Service Server (MBS Server) enable migration, handover, paging, and broadcast functions in the WiMAX system.

In this embodiment, a BS serving node (BSSN) is set in advance in the WiRAN, and the function is: processing signaling that interacts with the core network, that is, the signaling from the terminal SS MSS and the core network are respectively adapted to conform to the signaling peer protocol. Message. In addition, the present embodiment adopts an existing BS, and carries a plurality of functional modules in the network architecture of the WiMAX system together with the BSSN to facilitate management of the WiRAN by the operator. The following three implementation manners of the embodiment are described in detail: the DGW module and the SGW module are both located in the network architecture on the BSSN, the DGW module and the SGW module are respectively located on the BS and the BSSN, and the network architecture of multiple BSs to one BSSN, and The DGW module and the SGW module are respectively located on the BS and the BSSN, and the network architecture of the plurality of BSs to the multiple BSSNs.

Embodiment 1: The network architecture of the DGW module and the SGW module are both located on the BSSN. As shown in FIG. 3, in the network architecture of this embodiment, the WiRAN includes two functional entities, a BS and a BSSN, wherein the BS and the terminal SS/MSS are respectively through an air interface and an I-BB interface. The BSSN interacts, and the BSSN interacts with the core network through the I-BNO interface, and the BSSN performs information transmission through the I-BSSN interface. The BS in this embodiment includes a MAC&PHY module and a BRRM module. The BSSN includes an SGW module, a DGW module, a CRRM module, a HO Controller module, a Relocation Controller module, an MBS Server module, and a Paging Controller module, and the SGW module and the DGW module therein are both Interworking with the core network through the I-BNO interface.

The MAC&PHY module, the BRRM module, the CRRM module, the SGW module, and the DGW module in this embodiment have the same functions as the corresponding modules in FIG. 2, and the functions of the remaining modules are as follows:

The HO Controller module: completes the coordination and decision control of the handover process between the BSs, that is, the HO Controller receives the measurement report of the signal quality of the neighboring cell reported by the user terminal through the MAC&PHY module, and determines the candidate target BS according to the measurement report; the HO Controller utilizes the SGW. The module performs the query resource satisfaction condition of each candidate target BS and whether the service quality required by the terminal handover can obtain the guarantee information; the HO controller selects the final target BS according to the acquired information, and delivers the handover execution information to the user through the MAC&PHY module. The user terminal performs the operation of switching to the target BS, and returns a message that the terminal switches to the target BS to the HO Controller; after receiving the message, the HO Controller instructs the MAC&PHY module to release the air interface resource for the terminal, and instructs the SGW module to perform the Migration of the core network signaling plane interface and user data plane interface.

Relocation Controller module: When WiRAN performs handover between BSSNs, the migration between the control plane interface and the data plane interface between the BSSN and the core network is completed, that is, when handover between the BSSNs needs to be performed, the Relocation Controller module receives the SGW from the SGW. After the migration request of the module, returning a handover request response indicating that the migration request is accepted to the SGW module, and continuing the subsequent operations of the migration;

MBS Server module: Complete MBS service scheduling, process processing, and MBS services The SS/MSS sends a message to the MBS Server through the MAC&PHY module to query the MBS service content list. After receiving the message, the MBS Server returns the MBS content list and the multicast IP address/port number information to the SS/MSS. After receiving the multicast IP address/port number of the MBS service, the SS/MSS sends the information to the BSSN through the BS; after receiving the information, the BSSN performs the process of receiving the MBS service content with the MBS Server; After the right is completed, the BSSN sends a message including the MBS downlink service parameter information to the SS/MSS through the BS; after receiving the message, the SS MSS sends a message to the BSSN through the BS to obtain an MBS key for decrypting the MBS service data; The BS returns a response message including the MBS key to the SS/MSS to the SS/MSS. The SS/MSS uses the obtained MBS downlink service parameter and the MBS key information to receive the relevant MBS service data sent from the MBS server through the BS. Normal MBS service reception status.

Paging Controller module: Used to control the paging process related to the SS MSS entering and exiting the idle (Idle) state, and storing the information related to the SS/MSS after the SS/MSS enters the Idle state. Specifically, when the paging process is controlled, the paging control message is sent to the scheduling process of the paging process, that is, when the core network needs to page a terminal, the core network sends a paging request message to the access. The SGW module forwards the paging request message to the Paging Controller. After receiving the paging request message, the Paging Controller determines the BS range for paging according to the paging area information carried in the paging request message, and passes the SGW. The module notifies the determined BS to perform paging; the Paging Controller determines whether to stop the paging process according to the paging result of each BS.

The process of accessing the core network by using the network architecture of the embodiment includes the following steps: Step 101: The terminal SS/MSS sends an indicator carrying the terminal identifier, the service type, and the size of the service data to the BS in the WiRAN through the air interface common channel. Business request.

The terminal SS/MSS sends a service request to the BS in this step, and starts the process of accessing the core network. In addition, the terminal SS/MSS indicates the initiator through the terminal identifier in the service request, In order to successfully access the core network, receive the required business data.

Step 102: After receiving the service request of the terminal SS/MSS, the MAC&PHY module in the BS requests the radio resource from the BRRM module in the BS according to the size of the service data in the service request, and the BRRM module according to the received resource request and the current The status of the network resource determines whether to allow access to the SS/MSS, and if access is allowed, performs radio resource allocation within the BS.

In this step, the MAC&PHY module carries the size of the service data in the service request in the radio resource request and sends it to the BRRM module, and the BRRM module provides the current network, such as the transmit power, the number of users accessing, the processing capability of the BS, and the like. The resource is compared with the amount of service data in the resource request. If the available network resource can provide the terminal with the required amount of service data, the decision to allow the current service request to be accessed is made; otherwise, the rejection of the current service request is made. Decide.

In the case of allowing access, the BRRM module performs network resource allocation within the BS where it is located, for example, assigning a channel to the current service, allocating bandwidth, and the like.

Step 103. The MAC&PHY module in the BS establishes a dedicated signaling connection of the SS/MSS air interface on the radio resource allocated by the BRRM module, and transmits the service request to the SGW module in the BSSN through the common channel.

Step 104. The SGW module in the BSSN requests the CRRM module in the BSSN for the resource for transmission according to the service type and the data volume in the service request, and the CRRM module allocates the resource in the BSSN where the resource is located according to the received resource request. And the SGW module further allocates an instance for recording information of the SS/MSS access network to the SS/MSS according to the terminal identifier in the service request, and completes dedicated signaling for transmitting signaling with the MAC&PHY module in the BS. connection.

In this step, the SGW module carries the size of the service data in the service request in the resource request, and sends the CRRM module to the CRRM module according to the resource request. The service type and the amount of service data are allocated resources within the BSSN to serve the service for this service. In addition, the SGW module allocation instance refers to the information description of the service in the memory of the BSSN, where the information description includes at least information such as the terminal SS MSS and the service type of the current service. '

Step Rubber 105. The SGW module in the BSSN establishes a dedicated signaling connection with the core network, and assembles the SS/MSS service request into an I-BNO interface message, which is sent to the core network through the I-BNO interface.

In the case where a dedicated signaling connection between the BS and the SS/MSS air interface and a dedicated signaling connection for the transmission signaling of the MAC&PHY module in the B.SSN have been established, the SGW is established between the SGW and the core network in this step. Dedicated signaling connection. So far, the dedicated signaling physical connection for transmitting signaling from the terminal SS/MSS to the core network is established.

Step 106: After receiving the service request, the core network performs authentication on the terminal SS MSS. If the authentication succeeds, proceed to step 107; otherwise, terminate the process of accessing the core network by the WiRAN.

In this step, the core network first sends an authentication request to the BSSN in the WiRAN. The SGW module in the BSSN forwards the authentication request to the SS/MSS through the MAC&PHY module in the BS. Then, the SS MSS is authenticated. The path of the authentication request returns an authentication authentication response to the core network, and the core network completes the authentication according to the content of the response. The authentication method in this step can adopt a conventional method such as a digital certificate or a shared key.

If the core network does not need to verify the identity of the access terminal, the authentication process of this step is omitted.

Step 107: After the core network sends a service establishment request to the BSSN through the I-BNO interface, the BRRM module in the BS performs resource control on the BS where the BS is located, and then the SGW module establishes service data for performing with the core network according to the service establishment request. The DGW user plane instance being transmitted. The DGW user plane instance in this step cooperates with the user plane instance in the core network to implement data transmission after successful access, and in consideration of the mobile internet protocol (IP), the DGW is an external proxy in the mobile IP network (FA). ) module. .

Step 108. The SGW module in the BSSN notifies the MAC&PHY module to establish an air interface for transmitting data data, and after the air interface connection is successfully established, the SGW module returns a connection success message to the core network, and the core network passes the SGW in the BSSN. The module and the MAC&PHY module in the BS return a connection success response message to the terminal SS MSS.

So far, in this embodiment, the terminal SS/MSS is completed through the service access process of the WiRAN and the core network.

Thereafter, the terminal SS/MSS interacts with the core network through the DGW module in the BSSN to implement service data transmission, and when the migration or handover occurs, the HO Controller module, the Relocation Controller module, the MBS Server module, and the Paging Controller in the BSSN are used. The modules work together to ensure the normal transmission of the business.

In addition, the network architecture of this embodiment may also adopt the scheme shown in FIG. 4, that is, the MBS Server module and the Paging Controller module in FIG. 3 are separated from the BSSN, and are respectively configured by the I-BM and the I-BP interface. Shared by BSSN. When using this network architecture to access the core network, the specific process is exactly the same as steps 101 to 108 above.

In addition, the network architecture of this embodiment may include a HO Controller module, a Relocation Controller module, an MBS Server module, and a Paging Controller module in addition to the MAC & PHY module, the BRRM module, the SGW module, the CRRM module, and the DGW module necessary for access. One or any combination of the two.

Embodiment 2: The DGW module and the SGW module are respectively located on the BS and the BSSN, and the network architecture of multiple BSs to one BSSN.

As shown in FIG. 5, in the network architecture of this embodiment, the WiRAN includes two functional entities, a BS and a BSSN, wherein the BS passes through an air interface, an I-BB interface, and an I-BSO interface, respectively. The SS/MSS, the BSSN, and the core network interact with each other, and the BSs communicate with each other through the I-BS interface. The BSSN exchanges information with the core network through the I-BNO interface, and the BSSN performs information transmission through the I-BSSN interface.

The BS in this embodiment includes a MAC&PHY module, a BRRM module, a DGW module, and a HO Controller module, and the DGW module accesses the core network through the I-BSO module; the BSSN includes an SGW module, a CRRM module, a Relocation Controller module, and an MBS. The Server module and the Paging Controller module, and the SGW module therein is connected to the core network through the I-BNO interface. The functions of the respective modules in this embodiment are identical to those of the modules in Embodiment 1.

It can be seen from FIG. 5 that the BSSN and the BS in this embodiment have a one-to-many relationship, that is, one BSSN is connected to multiple BSs, and each BS can only access one BSSN in its own WiRAN.

The process of accessing the core network by using the network architecture of the embodiment includes the following steps: Step 201: The terminal SS/MSS sends an indicator carrying the terminal identifier, the service type, and the size of the service data to the BS in the WiRAN through the air interface common channel. Business request.

The terminal SS/MSS sends a service request to the BS in this step, and starts the process of accessing the core network. In addition, the terminal SS/MSS indicates the initiator through the terminal identifier in the service request, so as to successfully access the core network, and receive the required service data.

Step 202. After receiving the service request of the terminal SS/MSS, the MAC&PHY module in the BS requests the radio resource from the BRRM module in the BS according to the size of the service data in the service request, and the BRRM module according to the received resource request and the current The status of the network resource determines whether to allow access to the SS/MSS, and if access is allowed, performs radio resource allocation within the BS.

In this step, the MAC&PHY module carries the amount of service data in the service request in the radio resource request and sends it to the BRRM module, and the BRRM module will transmit power, for example. The available resources of the current network, the processing capacity of the BS, etc., are compared with the amount of service data in the resource request. If the available network resources can provide the terminal with the required amount of service data, the current service is allowed. The decision to request access; otherwise, a decision to reject access to the current service request is made.

Step 203. The MAC&PHY module in the BS establishes a dedicated signaling connection of the SS/MSS air interface on the radio resource allocated by the BRRM module, and transmits the service request to the SGW module in the BSSN.

Step 204. The SGW module in the BSSN requests, from the CRRM module in the BSSN, the resource for transmission according to the service type and the data volume in the service request, and the CRRM module allocates the radio in the BSSN where the CRSN is located according to the received resource request. The SGW module allocates an instance for recording information of the SS/MSS access network to the SS/MSS according to the terminal identifier in the service request, and completes a dedicated message for transmitting signaling with the MAC&PHY module in the BS. Let the connection.

In this step, the SGW module carries the size of the service data in the service request to the resource request, and sends the CRRM module to the CRRM module. The CRRM module in the BSSN allocates the internal resources of the BSSN according to the service type and the service data amount in the service request, so that the SGW module can This service access service. In addition, the SGW module allocation example refers to the establishment of a service description for the service in the BSSN memory, and the information description includes at least the terminal SS/MSS and service type information of the current service.

Step 205. The SGW module in the BSSN establishes a dedicated signaling connection with the core network, and assembles the SS/MSS service request into an I-BNO interface message, and sends the message to the core network through the I-BNO interface.

Dedicated connection between BS and SS/MSS air interface and BSSN and BS have been established In the case of a dedicated signaling connection for transmitting signaling in the MAC & PHY module, in this step the SGW establishes a dedicated signaling connection with the core network for transport signaling. So far, the dedicated signaling connection for transmitting signaling from the terminal SS/MSS to the core network is established.

Step 206: After receiving the service request, the core network performs authentication on the terminal SS MSS. If the authentication succeeds, proceed to step 207; otherwise, terminate the WiRAN access to the core network.

In this step, the core network first sends an authentication request to the BSSN in the WiRAN. The SGW module in the BSSN forwards the authentication request to the SS/MSS through the MAC&PHY module in the BS. Then, the SS MSS is authenticated. The path of the authentication request returns an authentication authentication response to the core network, and the core network completes the authentication according to the corresponding content. The authentication method in this step can adopt a conventional method such as a digital certificate or a shared key.

If the core network does not need to authenticate the identity of the access terminal, the authentication process of this step is omitted.

The above steps 201 to 206 are identical to the steps 101 to 106 in the embodiment 1. Step 207. After the core network sends a service establishment request to the BSSN through the I-BNO interface, the BRRM module in the BS performs resource control on the BS where the BS is located, and then the SGW module establishes the request through the I-BB interface according to the service establishment request. A DGW user plane instance for performing service data transmission with the core network.

The DGW user plane instance in this step cooperates with the user plane instance in the core network to implement data transmission after successful access, and in consideration of the mobile internet protocol (IP), the DGW is an external proxy in the mobile IP network (FA). ) module. .

Step 208. The SGW module in the BSSN notifies the MAC&PHY module to establish a service data connection for transmitting data of the air interface, and after the air interface connection is successfully established, the SGW module returns a connection success message to the core network, and the core network passes the SGW in the BSSN. The module and the MAC&PHY module in the BS return a connection success response message to the terminal SS/MSS. So far, in this embodiment, the terminal SS/MSS is completed through the service access process of the WiRAN and the core network.

Thereafter, the terminal SS/MSS interacts with the core network through the DGW module in the BS to implement service data transmission, and when the migration or handover occurs, the HO Controller module in the BS, the Relocation Controller module in the BSSN, and the MBS Server module And the Paging Controller module works together to ensure the normal transmission of services.

In addition, the network architecture of this embodiment may also adopt the scheme shown in FIG. 6, that is, the MBS Server module and the Paging Controller module in FIG. 5 are separated from the BSSN, and are respectively configured by the I-BM and the I-BP interface. Shared by BSSN. When using this network architecture to access the core network, the specific process is exactly the same as steps 201 to 208 above.

Embodiment 3: The DGW module and the SGW module are respectively located on the BS and the BSSN, and the network architecture of multiple BSs to multiple BSSNs.

As shown in FIG. 7, in the network architecture of this embodiment, the WiRAN includes two functional entities, a BS and a BSSN, wherein the BS passes the air interface, the I-BB interface, and the I-BSO interface, and the terminal SS/MSS, the BSSN, and the core network respectively. Interacting, each BS communicates through the I-BS interface, the BSSN exchanges information with the core network through the I-BNO interface, and the BSSN performs information transmission through the I-BSSN interface.

The BS in this embodiment includes a MAC&PHY module, a BRRM module, a DGW module, and a HO Controller module, and the DGW module accesses the core network through the I-BSO module; the BSSN includes an SGW module, a CRRM module, a Relocation Controller module, and an MBS. Server module and Paging Controller module, and SGW among them The module is connected to the core network through the I-BNO interface. The functions of the respective modules in this embodiment are identical to those of the modules in Embodiment 1.

It can be seen from FIG. 7 that the BSSN and the BS in this embodiment are in a many-to-many relationship, that is, one BSSN is connected to multiple BSs, and each BS can access the BSSN in its own WiRAN. It can be configured to access the BSSN in other WiRANs. Generally, the BS accesses the BSSN in its WiRAN by default. The advantage of this approach is that when the default BSSN works abnormally, the BS can automatically select a new BSSN to ensure normal network transmission. This kind of network architecture can reduce the flaw of a large-area access network caused by a BSSN, ensure the robust operation of the WiMAX access network, and provide a better fault-tolerant mechanism for the entire network.

The process of accessing the core network by using the network architecture of the embodiment includes the following steps: Step 301. The terminal SS/MSS sends an indicator carrying the terminal identifier, the service type, and the size of the service data to the BS in the WiRAN through the air interface common channel. Business request.

Step 302. After receiving the service request of the terminal SS/MSS, the MAC&PHY module in the BS requests the radio resource from the BRRM module in the BS according to the size of the service data in the service request, and the BRRM module according to the received resource request and the current The status of the network resource determines whether to allow access to the SS/MSS, and if access is allowed, performs radio resource allocation within the BS.

Step 303. The MAC&PHY module in the BS establishes a dedicated signaling connection of the SS MSS air interface on the radio resource allocated by the BRRM module, and transmits the service request to the SGW module in the BSSN controlling the BS.

Step 304. The SGW module in the BSSN requests the CRRM module in the BSSN for the resource for transmission according to the service type and the data volume in the service request, and the CRRM module allocates the wireless in the BSSN where the CRRM module is located according to the received resource request. The SGW module allocates the SS/MSS for recording the SS/MSS according to the terminal identifier in the service request. An instance of information accessing the network and completing a dedicated signaling connection with the MAC&PHY module in the BS for transport signaling.

Step 305. The SGW module in the BSSN establishes a dedicated signaling connection with the core network, and assembles the SS/MSS service request into an I-BNO interface message, and sends the message to the core network through the I-BNO interface.

Step 306. After receiving the service request, the core network authenticates the terminal SS MSS. If the authentication succeeds, proceed to step 307; otherwise, terminate the process of the WiRAN accessing the core network.

Step 307. The core network sends a service establishment request to the BSSN through the I-BNO interface, and the BRRM module in the BS performs resource control on the BS where the BS is located, and then the SGW module establishes the request through the I-BB interface according to the service establishment request. A DGW user plane instance for performing service data transmission with the core network.

In this step, in consideration of the mobile internet protocol (IP), the DGW is a foreign agent (FA) module in the mobile IP network.

Step 308. The SGW module in the BSSN notifies the MAC&PHY module to establish a service data connection for transmitting data of the air interface, and after the air interface connection is successfully established, the SGW module replies to the core network with a connection success message, and the core network passes the SGW in the BSSN. The module and the MAC&PHY module in the BS return a connection success response message to the terminal SS MSS.

The above steps 301 to 308 are identical to the steps 201 to 208 in the second embodiment. Thereafter, the terminal SS/MSS interacts with the core network through the DGW module in the BS to implement transmission of service data, and when the migration or handover occurs, the HO Controller in the BS The module, the Relocation Controller module in the BSSN, the MBS Server module, and the Paging Controller module work together to ensure normal transmission of services.

In addition, the network architecture of this embodiment may also adopt the scheme shown in FIG. 8, that is, the MBS Server module and the Paging Controller module in FIG. 7 are separated from the BSSN, and are respectively configured by the I-BM and the I-BP interface. Shared by BSSN. When using this network architecture to access the core network, the specific process is exactly the same as steps 301 to 308 above.

Since there are many types of core networks, the BS and the BSSN in the above three embodiments may adopt different interfaces according to the core network type of the specific access, for example, when the WiRAN accesses the WCDMA core network, the BS and the BSSN. Both communicate with the WCDMA network through the IU-PS interface.

In addition, the processing of signaling and the processing of data in the above three embodiments are respectively performed by the SGW module and the DGW module. Since the SGW module represents the control plane of the WiRAN, the DGW module represents the user plane of the WiRAN, and the SGW and the DGW can be placed in different manners. In the physical entity, the separation of the user plane and the control plane is realized, which facilitates the management and overall coordination of the WiRAN, and improves the efficiency and stability of the device.

Example 4:

In this embodiment, it is not necessary to set the BSSN in the WiRAN in advance, but the MAC&PHY module, the GW module, and the RRM module of the present invention are all set in the BS, and the WiRAN has a plurality of such BSs.

FIG. 9 is a schematic diagram of a network architecture of a WiRAN accessing a core network according to a fourth embodiment of the present invention, where a GW module is divided into an SGW module and a DGW module, and a MAC&PHY module, SGW The module, the DGW module, and the RRM module are all located in the BS. The BS is distributedly connected to the core network. In the vertical direction, the BS and the core network are interconnected through an I-BO interface, and each BS adapts the core network protocol stack through the I-BO interface, including a transport network layer protocol. The protocol of the wireless network layer and the high-level application protocol, each BS is connected to only one core network on the user plane and the control plane. In the horizontal direction, the BSs are interconnected through an I-BS interface, and each BS performs signaling and data interaction with other BSs through the I-BS interface to complete functions such as handover, migration, and data forwarding between different BSs. The client SS MSS accesses the BS through the U interface.

When the terminal SS/MSS accesses the core network by using the foregoing access network, the terminal SS MSS first sends a service request carrying the terminal identifier and the service code to the BS through the air interface. After the MAC&PHY module in the BS receives the service request of the terminal SS/MSS, the RRM module in the BS performs radio resource allocation within the BS according to the service request. The MAC&PHY module establishes a dedicated signaling connection for the SS/MSS air interface on the radio resources allocated by the RRM module, and transmits the service request to the SGW module in the BS through the common channel. The SGW module allocates an instance of the SS/MSS for recording information of its access network according to the terminal identifier carried in the received service request, and establishes a dedicated signaling connection between the SGW module and the MAC&PHY module. The SGW module further establishes a dedicated signaling connection with the core network, and assembles the SS/MSS service request into an I-BO interface message that can be identified by the core network, and sends the message to the core network through the I-BO interface to the core network. Request business.

After receiving the I-BO interface message from the BS, the core network sends a service establishment request to the BS through the I-BO interface, and the RRM module in the BS performs resource control on the BS where the BS is located, and then the SGW module establishes a request according to the service. And the resource control result, the DGW module is notified by the internal primitive to establish a user plane instance for performing service data transmission with the core network. Then, the SGW module notifies the MAC&PHY module to establish an air interface service data connection by using an internal primitive, and after the air interface service data connection is successfully established, returns a service connection establishment success message to the core network through the SGW module; the core network passes the message and then passes the message. SGW module and The MAC&PHY module returns a service access success message to the SS/MSS, indicating that the service connection has been successfully established. So far, in this embodiment, the terminal SS/MSS is completed through the service access process of the WiRAN and the core network.

Thereafter, the terminal SS/MSS receives the service data from the core network through the DGW module in the BS, and controls the switching of the terminal SS/MSS between the BSs through the I-BS interface by the HO Controller in the BS when the migration or handover occurs. . The specific switching process is:

After receiving the measurement report of the quality of the neighboring cell signal reported by the SS/MSS, the HO Controller determines the candidate target BS according to the cell signal quality. Then, the HO Controller uses the SGW module to consult each target BS through the I-BS interface, and whether the resource sufficiency and the required QoS can be guaranteed. After obtaining this information, the HO Controller selects a final target BS and delivers handover execution information to the terminal SS/MSS through the MAC&PHY module. The terminal SS/MSS performs an operation of switching to the target BS, and returns a message that the terminal switches to the target BS to the HO Controller of the BS. After receiving the message, the HO Controller of the BS instructs the MAC&PHY module to release the air interface resource for the terminal, and sends a message to the GW module to instruct the GW module to perform the migration of the signaling plane interface and the user data plane interface between the BS and the core network.

The Paging Controller delivers the paging message through the I-BP interface. Specifically, when the core network needs to page a terminal, the core network sends a paging request message through the I-BO interface, and the SGW module forwards the paging request message to the Paging Controller Paging Controller after receiving the paging request message. The BS range in which the paging is performed is determined based on the paging area information carried in the paging request message. The Paging Controller then notifies each BS to page through the SGW module. After determining that the terminal is paged, the Paging Controller stops the paging of the terminal or re-patches after the timeout. After a certain number of paging failures, the entire paging fails.

The MBS Server completes the delivery and transmission of the multicast broadcast service (MBS) through the I-BM interface. Transfer scheduling. First, the SS/MSS sends a message to the MBS server through the MAC&PHY module to query the MBS service content list. After the MBS server 4 to lj the message, the SS MSS returns a response including information such as the MBS content list, the multicast IP address/port number, and the like. After the SS/MSS selects the multicast IP address/port number of the received MBS service, the SS/MSS sends the information to the BS. After receiving the information, the BS performs an authentication process of receiving the MBS service content with the MBS server. After the authentication is completed, the BS sends a message including information such as the MBS downlink service parameter to the SS/MSS.

After receiving the message, the SS/MSS sends a message to the BS to obtain the MBS key used to decrypt the MBS service data packet. The BS returns a response message containing the MBS key to the SS/MSS to the SS/MSS. After obtaining the MBS downlink service parameters and the MBS key, the SS/MSS uses the obtained information to receive the relevant MBS service data packet sent from the MBS server through the BS, and enters the normal MBS service reception state.

If the functions of the SGW module and the DGW module are included in the GW module, that is, the GW module functions as a separate entity including the signaling plane and the user plane gateway function, the information interaction between all the foregoing and the SGW module is between the GW module and the GW module. Information exchange.

The core network in the network architecture provided in this embodiment may be a core network of various communication systems, such as an NGN core network, a 3G core network, a 2G core network, and the like. The principle of accessing the core network of different communication systems is similar to the above process. The only difference is that: To access the core network of different communication systems, different interfaces and messages that can be identified by different core networks need to be used. The following is an example of WiRAN access to a 3G WCDMA PS core network.

FIG. 10 is a network architecture of a WiRAN accessing a WCDMA PS core network according to a fourth embodiment of the present invention. The WiRAN includes the same logical function modules as the WiRAN shown in FIG. 9, and will not be described in detail herein. The interface I-BO shown in Figure 9 is here the IU-PS interface of the WCDMA PS core network. In this way, the BS-side adapts the signaling plane protocol stack of the IU-PS interface, including the transport network layer protocol, such as SCCP MTP3B/SCTP, the protocol RANAP of the wireless network layer, and the protocol of the non-access stratum NAS; User plane with IU-PS interface Protocol stack, such as GTP-U. And through the analysis of the IUPS interface NAS layer message in the BS, it is adapted to the service application layer protocol between the terminal and the terminal, so as to realize the communication between the terminal and the core network NAS layer, and isolate the coupling relationship between the terminal and the core network.

When the terminal SS/MSS in the WiMAX system uses the above access network to access the WCDMA PS core network, the SS/MSS first completes the access initialization procedure defined in the IEEE 802.16/IEEE 802.16e air interface protocol through the MAC&PHY module. After the SS/MSS completes the access initialization process of the access network with the BS, the SS/MSS initiates a service request for accessing the WCDMAPS core network through the MAC&PHY module, and the MAC&PHY module establishes the signaling of the air interface after receiving the service request. connection. The service request is forwarded to the SGW module, and the SGW module establishes an IU-PS interface signaling connection after receiving the service request, and assembles the data packet of the service type requested by the user IMSI/PTMSL included in the service request, and passes the standard IU- The Initial User Data Transfer (Initial UE DT) message of the PS interface is sent to the core network.

After receiving the Initial UE D message, the core network sends a message to the SS/MSS to authenticate the user USIM. After the authentication of the SS/MSS authentication is completed, the authentication and authentication result is reported to the BS, and the BS composes the authentication response result into a corresponding response message and reports it to the core network.

The SGW module in the BS sends a service request to the core network through the IU-PS interface according to the service request sent by the SS/MSS, that is, a packet data protocol (PDP) activation request, and the core network sends the RAB finger to the BS after receiving the PDP activation request. With the request message, the SGW module in the BS receives the radio access bearer (RAB) assignment request message, establishes a user plane instance of the DGW and the core network, and notifies the MAC&PHY module to establish the service data of the new transmission service data of the air interface. connection. After the MAC&PHY module completes the establishment of the service data connection, the RAB establishment success message is returned to the core network through the SGW module. After receiving the RAB establishment success message, the core network sends a PDP activation request response to the BS; the SGW module forms the received PDP activation request response message into the SS/MSS application layer message, and sends the message to the SS/MSS through the MAC&PHY module to notify The SS/MSS service request was successful. So far the entire business has been established. Since the present invention is a distributed architecture within a certain range, the IP protocol is adopted between the network elements to ensure that information interaction between the networks is implemented by IP routing without using dedicated circuit connections, thereby ensuring the relationship between the network elements. The easy implementation of the connection is suitable for the case of network all-IP interconnection.

Based on the architecture of the WiRAN in this embodiment, the method for accessing the WiMAX system to the core network provided by the present invention includes the following steps:

Step 401. The terminal SS/MSS sends a service request carrying the indicator of the terminal identifier, the service type, and the size of the service data to the BS through the air interface.

When the terminal SS/MSS needs the service provided by the core network, in this step, the service request is sent to the BS, and the process of accessing the core network is started. Before initiating the access procedure, the SS/MSS completes the access initialization procedure defined in the IEEE 802.16/IEEE 802.16e air interface protocol through the MAC&PHY module. For the process, refer to the IEEE 802.16/IEEE 802.16e air interface protocol, which is not described here.

In addition, the terminal SS/MSS indicates the initiator through the terminal identifier in the service dependency, so as to receive the required service data after successfully accessing the core network.

Step 402. After receiving the service request of the terminal SS/MSS, the MAC&PHY module in the BS requests the RM module to allocate the radio resource, and the RRM module determines whether to allow the service according to the size of the service data in the service request and the current network resource status. The SS/MSS accesses, and in the case of allowing access, performs radio resource allocation within the BS.

In this step, the RRM module compares the available resources of the current network, such as the transmit power, the number of users that have accessed, and the processing capability of the BS, with the amount of service data in the service request, if the available network resources can provide the terminal with the location. The amount of service data required allows the current service to request access; otherwise, the current service request is denied access.

In the case of allowing service request access, the RRM module performs network resource allocation within the BS where it is located, for example, assigning a channel to the current service, allocating bandwidth, and the like. Step 403. The MAC&PHY module in the BS establishes a dedicated signaling connection for transmitting signaling of the SS/MSS air interface on the radio resource allocated by the RRM module, and transmits the service request to the SGW module in the BS.

Step 404. The SGW module in the BS allocates an instance of the SS/MSS for recording various information of the SS/MSS access network according to the terminal identifier in the service request, and uses the instance to establish a dedicated for the SGW module and the MAC&PHY module. Signaling connection.

In this step, the SGW module allocation instance refers to, in the BS memory, the information description is established for the current service request, and the information description includes at least the terminal SSMSS of the current service request, the requested service type, and the like, and the information is used for management. SS/MSS access to various activities of the network.

Step 405. The SGW module in the BS establishes a dedicated signaling connection with the core network, and forms an SS/MSS service request into an interface message that can be identified by the core network, and sends the interface message to the core network through the 0 interface between the BS and the core network. .

Since the dedicated signaling connection between the BS and the SS/MSS air interface is established in step 403, the SGW module establishes a dedicated signaling connection with the core network in this step. So far, the dedicated signaling connection from the terminal SS/MSS to the core network is established.

Step 406. After receiving the service request, the core network performs authentication on the terminal SS/MSS. If the authentication is successful, the process proceeds to step 407; otherwise, the process of accessing the core network by the WiRAN is ended.

In this step, the authentication of the terminal SS/MSS includes: The core network first sends an authentication request to the BS, and the SGW module in the BS forwards the authentication request to the SS through the MAC&PHY module in the BS. After the authentication is completed, the SS/MSS returns an authentication authentication response to the core network, and the core network completes the authentication according to the content of the response. The authentication method in this step can use conventional methods such as digital certificates and shared keys.

If the core network does not need to verify the identity of the access terminal, the authentication of this step is omitted. Process.

Step 407. The core network sends a service establishment request to the BS. After receiving the request, the SGW module in the BS notifies the RRM module to perform resource control on the BS where it is located, and then the SGW module establishes a DGW module according to the service establishment request. The DGW user plane instance of the core network for service data transmission.

The DGW user plane instance in this step is used to cooperate with the user plane instance in the core network to implement data transmission after successful access, and in consideration of the mobile internet protocol (IP), the DGW is an external proxy in the mobile IP network. (FA) module. .

Step 408. The SGW module in the BS notifies the MAC&PHY module to establish a service data connection of the air interface, and after the air interface service data connection of the MAC&PHY module is successfully established, the SGW module returns a message of successful connection to the core network.

Step 409. After receiving the connection success response message, the core network returns a response message of successful connection to the terminal SS/MSS through the SGW module in the BS and the MAC&PHY module in the BS, to notify the SS/MSS service request that the request is successful. This embodiment assumes that the connection establishment is successful. If the connection establishment is unsuccessful, a connection establishment failure message is returned.

So far, in this embodiment, the terminal SS/MSS is redundant through the service access process between the BS and the core network.

Thereafter, the terminal SS/MSS receives the service data from the core network through the DGW module in the BS, and controls the switching of the SS MSS between the BSs by the HO Controller in the BS when migration or handover occurs. The specific handover control process includes the following steps:

Step 1. After receiving the measurement report of the signal quality of the neighboring cell reported by the SS/MSS, the switching controller determines the candidate target BS according to the cell signal quality. Step 2. The switching controller uses the SGW module to consult each target BS. Whether the resources satisfy the situation and whether the service quality required by the terminal handover can obtain the guarantee information;

Step 3. The switching controller selects the final target BS according to the obtained information, and passes The MAC&PHY module sends the handover execution information to the terminal SS/MSS;

Step 4. The terminal SS/MSS performs an operation of switching to the target BS, and returns a message that the terminal switches to the target BS to the handover controller;

Step 5. After receiving the message, the handover controller instructs the MAC&PHY module to release the air interface resources for the terminal, and performs the migration of the signaling plane interface and the user data plane interface between the BS and the core network.

Moreover, when the core network needs to page a terminal, the core network sends a paging request message to the access network, and the SGW module forwards the paging request message to the call controller; after the call controller receives the paging request message, , ^^ according to the paging area information carried in the paging request message, determining the BS range for paging, and notifying the determined BSs to perform paging by the SGW module; determining whether to stop searching according to the paging result of each BS Call the process.

The present invention can also provide MBS services to the terminal SS/MSS by using the MBS server included in the access network. The MBS service operations mainly include: MBS service list information acquisition, MBS service authentication and encryption key acquisition, and MBS service normal reception. Specifically, the following steps are included: Step 1. The SS/MSS sends an [HTTP] Request to one or more MBS servers to query the MBS service content list to find a related content server;

Step 2. After receiving the [HTTP] Request, the MBS server returns an [HTTP] Response to the SS/MSS, and the response includes the MBS content list, the multicast IP address/port number, and the like; Step 3. Obtain the content list of the MBS service. After the information, the SS/MSS sends a DSA-REQ message to the BS, where the message includes the multicast IP address/port number of the selected received MBS service;

Step 4. After receiving the DSA-REQ message, the BS sends a DSX-RVD message to the MBS server, and performs an authentication process for receiving the MBS service content with the MBS server;

Step 5. After a successful authentication and authorization process, the BS sends a DSA-RSP message to the terminal, including MBS downlink service parameters, for example, 1BS SA-ID; Step 6. After receiving the DSA-RSP message, the SS/MSS sends a PKM-REQ message to the BS to obtain the MBS key, and decrypts the received MBS MAC protocol data unit (PDU) with the key;

Step 7. After receiving the PKM-REQ message, the BS sends a PKM-RSP message to the MSS, including the MBS key.

Step 8. After obtaining the MBS downlink service parameters and the MBS key, the SS/MSS uses the obtained information to receive the relevant MBS MAC PDUs sent from the MBS server through the BS, and enters the normal MBS service reception state.

It should be noted that the BRRM module, the CRRM module, the SGW module, the DGW module, the MAC&PHY module, the HO Controller module, the Relocation Controller module, and the Paging Controller module in the present invention all belong to a logical entity, and they may be the same as the above embodiments. It is carried on the physical entity BS or BSSN, and can also exist as a separate entity in the WiRAN.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are made within the spirit and principles of the present invention, should be included in the present invention. Within the scope of protection.

Claims

Claim

A microwave access global interworking system access network system, characterized in that the access network system comprises:

a MAC&PHY module, configured to receive a service request sent by the user terminal, request a radio resource from the RRM module, and establish a dedicated signaling connection between the user and the user terminal according to a result of the radio resource allocation process from the RRM module; The service request is transmitted to the GW module;

The GW module is configured to establish a dedicated signaling connection between the MAC&PHY module and the core network, and forward the service request from the MAC&PHY module to the core network; receive and establish a request with the core network according to the service establishment request sent by the core network. The user plane instance, and sends an instruction to the MAC&PHY module to inform the MAC&PHY module to establish a service data connection for the air interface.

2. The access network system according to claim 1, wherein the GW module comprises: a signaling gateway SGW module and a data gateway DGW module; the RM module comprises a base station radio resource management BR M module and a public radio Resource management CRRM module;

The BRRM module is configured to allocate and control local radio resources according to a radio resource request of a MAC&PHY module;

Receiving, by the SGW module, the service request, requesting, by the CRRM module, a resource for transmission according to the service request, and establishing a dedicated signaling connection with the MAC&PHY module according to the resource allocated by the CRRM module, and The service request is sent to the core network; the SGW module also receives the service establishment request sent from the core network, and notifies the MAC&PHY module to establish a service data connection with the user terminal for transmitting data; The CRRM module is configured to interact with a BRRM module and an adjacent CRRM module, and allocate resources for the SGW module according to a resource allocation request of the SGW module;

The access network system according to claim 1, wherein the GW module comprises: an SGW module and a DGW module;

4. The access network system as claimed in claim 1, wherein the access network further comprises:

a switching controller module, located in the base station BS, configured to receive and determine a candidate target base station according to a measurement report of a neighboring cell signal quality reported by the user terminal through the MAC&PHY module; and send a message query to the determined candidate target base station by using the GW module Whether the resource meets the situation and whether the service shield required by the terminal handover can obtain the guarantee information to select the final target base station; the handover execution information is sent to the user terminal through the MAC&PHY module; and the terminal returned to the target according to the terminal returned by the user terminal The message of the base station sends a message instruction to the MAC&PHY module to indicate release of the air interface resource used by the MAC&PHY module terminal, and sends a message to the GW module to instruct the GW module to perform the migration between the base station and the core network signaling interface and the user plane interface.

5. The access network system according to any one of claims 1, 3 or 4, characterized in that The MAC&PHY module, the RRM module, and the GW module are placed in a base station.

The access network system according to claim 5, wherein the base station is interconnected with the core network through an I-BO interface; the base stations are interconnected by an I-BS interface.

The access network system according to claim 5, wherein the access network further comprises: a call controller module, configured to receive and determine, according to a call request forwarded by the core network through the GW module, Calling the base station range, and sending a message to the determined base stations through the GW module to notify the base station to perform paging; receiving and determining whether to stop the paging process according to the paging result returned by the base station.

8. The access network system of claim 7, wherein the call controller module is interconnected with the base station via an I-BP interface.

The access network system according to claim 5, wherein the access network further comprises: a multicast broadcast service server module, configured to receive and according to the multicast broadcast service sent by the user terminal through the MAC&PHY module Responding to return a response including the MBS service list information to the user terminal; sending an authentication request message to the user terminal through the MAC&PHY module, receiving an authentication response message returned by the user terminal through the MAC&PHY module; and transmitting, by the MAC&PHY module, the MBS downlink service parameter information The message is sent to the user terminal; the MBS service data is sent to the user terminal through the MAC&PHY module.

10. The access network system according to claim 9, wherein the multicast broadcast service server module is interconnected with the base station via an I-BM interface.

The access network system according to claim 2, wherein the MAC&PHY module and the BRRM module are located in a base station, and the CRRM module, the SGW module, and the DGW module are configured to process interaction with the core network. The base station serving node of the signaling, the base station serving node is located between the base station and the core network, and relays signaling and data information between the base station and the core network.

12. The access network system according to claim 2, wherein: The MAC&PHY module, the BRRM module, and the DGW module are located in a base station, and the CRRM module and the SGW module constitute a base station serving node for processing signaling that interacts with the core network, and the base station and the core network exchange data information, the base station service The node is located between the base station and the core network, and transits signaling information between the base station and the core network.

The access network system according to claim 11 or 12, wherein the base station service node further includes a migration controller module, configured to receive a migration request from the SGW module, to the SGW module. Returns a migration request response indicating acceptance of the switch request and performs the migration operation.

The access network system according to claim 13, wherein the base station serving node further comprises a broadcast multicast service server module, configured to receive and according to the multicast broadcast service sent by the user terminal through the MAC&PHY module. Receiving, by the base station, returning a response including the multicast broadcast service list information to the user terminal; transmitting, by the MAC&PHY module, the authentication request message to the user terminal, receiving the authentication response message returned by the user terminal through the MAC&PHY module; and transmitting the content through the MAC&PHY module Broadcasting the downlink service parameter information message to the user terminal; transmitting the multicast broadcast service data to the user terminal through the MAC&PHY module.

The access network system according to claim 14, wherein the base station serving node further includes a paging controller module, configured to receive and determine, according to a call request forwarded by the core network through the SGW module, Which base stations are paging, and the SGW module sends a message to the determined base stations to notify the base station to perform paging; and receives and determines whether to stop the paging process according to the paging result returned by the base station.

The access network system according to claim 11, wherein the base station serving node further comprises a handover controller module, configured to receive and measure a signal quality of a neighboring cell reported by the user terminal through the MAC&PHY module. Reporting, determining a candidate target base station; sending, by the SGW module, the determined candidate target base station to send a message to query that the resource is satisfied Whether the situation and the quality of service required for the terminal handover can obtain the guarantee information to select the final target base station; the handover execution information is sent to the terminal user terminal by the MAC&PHY module; and the message that the terminal returns to the target base station according to the terminal returned by the user terminal And sending a message instruction to the MAC&PHY module to indicate release of the air interface resource used by the MAC&PHY module terminal, and sending a message to the SGW module to instruct the SGW module to perform migration between the base station and the core network signaling interface and the user plane interface.

The access network system according to claim 12, wherein the base station further comprises a handover controller module, configured to receive and according to a measurement report of a signal quality of a neighboring cell reported by the user terminal through the MAC&PHY module, Determining the candidate target base station; sending, by the SGW module, the determined candidate target base station to send a message to query the resource satisfaction condition and whether the required quality of the terminal handover can obtain the guarantee information, so as to select the final target base station; and send the handover through the MAC&PHY module. Executing information to the terminal user terminal; receiving and transmitting, according to the message returned by the user terminal to the target base station, a message instruction to the MAC&PHY module to indicate release of the air interface resource used by the MAC&PHY module terminal, and sending a message to the SGW module to instruct the SGW module to perform the base station Migration with the core network signaling interface and user plane interface.

The access network system according to claim 11 or 12, wherein the network system further comprises:

a broadcast multicast service server module, configured to receive and respond to the multicast broadcast service request sent by the user terminal through the MAC&PHY module, and return, by the base station, a response including the multicast broadcast service list information to the user terminal; and send the authentication request message to the MAC&PHY module to a user terminal, receiving an authentication response message returned by the user terminal through the MAC&PHY module; transmitting, by the MAC&PHY module, a message including the multicast broadcast downlink service parameter information to the user terminal; and transmitting, by the MAC&PHY module, the multicast broadcast service data to the user terminal; a paging controller module, configured to store information related to the subscriber station/mobile station entering the idle state; and when controlling the paging procedure, receiving and determining, according to the call request forwarded by the core network through the SGW module, the base station performing paging Range, and sending a message to the determined base stations through the SGW module to notify the base station to perform paging, receiving and determining whether to stop the paging process according to the paging result returned by the base station;

The access network system according to claim 11, wherein the base station serving node is respectively connected to an I-BB interface between the base station and an I-BNO interface with the core network. The signaling and data information is relayed between the base station and the core network, and the CRRM module interacts with the adjacent CRRM through an I-BSSN interface between the base station serving nodes.

The access network system according to claim 12, wherein the base station serving node is respectively connected to an I-BB interface between the base station and an I-BNO interface with the core network. Transmitting signaling information between the base station and the core network; the base station exchanges data information with the core network through the I-BSO interface; the CRRM module passes the I-BSSN interface between the base station service nodes and the adjacent CRRM Interaction.

A method for accessing a core network by using a microwave access global interworking system access network system, wherein the method comprises the following steps:

B. After the connection establishment in step A is completed, the microwave access global interworking system access network notifies the establishment of the core network service, and the core network accesses the network communication through the microwave access global interworking system. It is known that the user terminal has successfully established and implemented the access to the core network.

The method according to claim 21, wherein the MAC&PHY module and the BRRM module are located in a base station, and the CRRM module, the SGW module, and the DGW module form a signaling for processing interaction with a core network. The base station service node, the method for establishing a connection between the self access system and the core network between the self access system and the user terminal in the microwave access global interworking system access network in step A includes the following steps:

After the MAC&PHY module in the base station receives the service request carrying the service data amount information from the user terminal, the BRRM module in the base station completes the permission control operation and the local according to the service data amount information and the network resource status. Allocation of radio resources, then the MAC&PHY module establishes a dedicated signaling connection for transmitting signaling to the user terminal air interface, and transmits the service request to the SGW module in the base station serving node;

A13. The SGW module in the base station serving node establishes a dedicated signaling connection with the core network for transmitting signaling, and assembles the service request of the user terminal into a protocol message with the core network, requests a service from the core network, and the core The network then sends a service establishment request to the SGW module in the base station service node;

The SGW module in the base station service node establishes a data gateway user plane instance for performing service data transmission with the core network for the current service, and implements service data transmission in cooperation with the user plane instance of the core network, and then the SGW module in the base station service node notifies The MAC&PHY module in the base station establishes an air interface service data connection, and the air interface connection is successfully established. After that, the connection success message is replied to the core network.

The method of claim 22, wherein the step of the microwave access global interworking system access network notifying the establishment of the core network service is: the SGW module in the base station service node notifying the core network Business establishment is completed;

The method according to claim 21, wherein the MAC&PHY module, the BRRM module, and the DGW module are located in a base station, and the CRRM module and the SGW module constitute signaling for processing interaction with a core network. The base station serving node, the method for establishing a connection between the self-interconnecting system and the core network and transmitting the signaling between the user and the core network in the microwave access global interworking system access network in the step A includes the following steps:

A23. The SGW module in the base station serving node establishes a dedicated signaling connection with the core network for transmitting signaling, and assembles the service request of the user terminal into a protocol message with the core network, and requests a service from the core network. The network then sends the service establishment request to the base station service node. SGW module in;

The SGW module in the base station serving node notifies the base station to establish a data gateway user plane instance for performing service data transmission with the core network for the current service, to cooperate with the user plane instance of the core network to implement service data transmission, and then the SGW in the base station service node. The module notifies the MAC&PHY module in the base station to establish a service data connection of the air interface, and after the air interface connection is successfully established, returns a connection success message to the core network.

The method of claim 24, wherein the step of the microwave access global interworking system access network notifying the establishment of the core network service is: the SGW module in the base station service node notifying the core network Business establishment is completed;

The method for the core network to notify the user terminal through the microwave access global interworking system access network that the current service connection has been successfully established is: the core network passes the MAC & PHY module in the base station and the SGW module in the base station service node, The user terminal is notified that the current service connection has been successfully established.

The method according to claim 22 or 24, wherein, before the core network sends the service establishment request to the base station service node, the method further includes: the core network authenticating the user terminal, If the authentication is successful, the core network allows the service request; otherwise, the core network rejects the service request and ends the process of accessing the core network.

The method of claim 26, wherein the migration controller is set in the base station service node, the method further comprising:

After receiving the migration request from the SGW module, the migration controller module in the base station service node returns a migration request response indicating acceptance of the migration request to the SGW module, and performs a migration operation.

The method of claim 21, wherein the step A comprises: A31. The MAC&PHY module in the microwave access global interworking system access network requests the RRM module according to the received service request of the user terminal. Radio resource allocation, establishing a dedicated signaling connection of the air interface of the user terminal according to the radio resource allocated by the RRM module, and transmitting the service request to the GW module;

A32. The GW module separately establishes a dedicated signaling connection between the GW module and the MAC&PHY module and the core network according to the received service request, and sends a service request to the core network through the interface between the GW module and the core network;

The method of claim 22, 24 or 28, wherein the multicast broadcast service server is set in the access network, the method further comprising:

After receiving the multicast IP address/port number of the broadcast multicast service server service, the user terminal sends the information to the base station serving node through the base station; after receiving the information, the base station service node performs broadcast multicast with the broadcast multicast service server. The authentication process of the service content is received; after the authentication is completed, the base station serving node sends a message including the broadcast multicast downlink service parameter information to the user terminal by using the base station; after receiving the message, the user terminal sends a message to the base station service node by using the base station, Obtaining a broadcast multicast service key for decrypting broadcast multicast service data; the base station serving node returns, by the base station, a response message including a broadcast multicast service key to the user terminal to the user terminal; The user terminal uses the obtained broadcast multicast downlink service parameter and the broadcast multicast service key information to receive the related broadcast multicast service data sent by the broadcast multicast service server through the base station, and enters the normal broadcast multicast service receiving state.

30. The method according to claim 29, wherein the multicast broadcast service server is located in a base station service node or exists in the access network separately.

The method of claim 22, 24 or 28, wherein a paging controller is provided in the access network, the method further comprising:

When the core network needs to page a certain terminal, the core network sends a paging request message to the access network, and the SGW module forwards the paging request message to the paging controller;

32. The method according to claim 31, wherein the paging controller is located in the base station serving node or independently exists in the access network.

33. The method of claim 22, 24 or 28, wherein the switching controller is set in the access network, the method further comprising:

After receiving the measurement report of the quality of the neighboring cell signal reported by the user terminal by the MAC&PHY module, the handover controller determines the candidate target base station according to the measurement report;

The switching controller uses the SGW module to perform query resource satisfaction for each candidate target base station and whether the service shield required by the terminal handover can obtain the guarantee information; the handover controller selects the final target base station according to the acquired information, and passes the MAC&PHY module. Sending handover execution information to the user terminal;

The user terminal performs an operation of switching to the target base station, and returns a message that the terminal switches to the target base station to the handover controller; after receiving the message, the handover controller instructs the MAC&PHY module The block releases the air interface resource for the terminal, and instructs the SGW module to perform the migration with the core network signaling plane interface and the user data plane interface.

34. The method of claim 33, wherein the handover controller is located in the base station or base station service node.

The method according to claim 24, wherein the method further comprises: when a handover or migration occurs, the base station serving nodes exchange or migrate information through an I-BSSN interface; The I-BS interface exchanges or migrates information interactively.

The method according to claim 24, wherein the base station serving node and the base station are in the same microwave access global interworking system access network or in different microwave access global interworking system access networks.