CN101159969B - A Directory-Based Access Network Convergence Method in Heterogeneous Wireless Environment - Google Patents

Abstract

The invention provides a directory-based access network fusion method for heterogeneous wireless environment, wherein the hardware platform comprises a terminal unit (1), a signaling base station (2), N service base stations (3), a core network, Un signaling channels between the terminal unit (1) and the signaling base station (2), Uu service channels between the terminal unit (1) and each service base station (3), Iu signaling channels between the signaling base station (2) and the core network, and Iu service channels between each service base station (3) and the core network. The method comprises the following key steps: directory indexing step, terminal start-up step, service establishment step, directory update step, and mode switching step. The invention incorporates the common access of control signaling, various modes of service communication and directory-based access management strategy, facilitates the selection and switch of communication modes, improves the management logic, coverage flexibility, switch flexibility and access controllability, and provides the extensive support. The invention is a high-efficiency proposal to access network of heterogeneous wireless network.

Description

A Directory-Based Access Network Convergence Method in Heterogeneous Wireless Environment

technical field

The invention belongs to the technical field of wireless communication, in particular to the technical field of fusion of access networks in heterogeneous wireless communication environments. the

Due to the diversification of user business needs and the long-term existence of existing network facilities within a certain range, the future mobile communication access network will be a multiple heterogeneous environment where multiple wireless access networks coexist. These may include: 2G network with wide area coverage at present, 3G network gradually commercialized, next-generation communication network represented by multi-antenna technology, and broadband wireless network represented by IEEE 802.x series, etc. How to realize the convergence of multiple wireless access networks in a heterogeneous environment and the cooperative work among multiple wireless access technologies are the main contents of future mobile communication research. the

In a heterogeneous wireless environment, there are two forms of terminal equipment: built-in multi-mode air interface modules, multi-mode multi-standby mobile phones that support multiple wireless interface technologies, and reusable mobile phones based on software defined radio (SDR: Software Defined Radio) technology. Mobile device with air interface module. the

The heterogeneity of wireless communication access networks and the diversity of terminal equipment determine the diversification of air interfaces. In order to enable various terminal equipment to work in heterogeneous wireless access networks, to achieve compatibility and The interconnection and intercommunication between various heterogeneous wireless access network fusion technologies have been deeply studied. the

The European Union's sixth framework plan proposes the end-to-end reconfiguration (E2R: End to End Reconfigurability) technology as a solution for the convergence of heterogeneous wireless access networks. E2R utilizes the reconfiguration capabilities provided by software radios, integrates programmable, configurable, and abstract hardware environments, and modular software design ideas to construct an architecture with reconfigurable network elements such as base stations as the main body, enabling the network to support A variety of access technologies to achieve the integration of heterogeneous access networks. The core idea of E2R is that the analog-to-digital/digital-to-analog conversion is as close as possible to the antenna, and software is used to complete as many radio functions as possible. When terminal equipment performs wireless access and switching, it downloads specific software through the air interface for configuration, thus making wireless access more flexible. For details, see: ①E2R, End to End Reconfigurability, http://e2r2.motlabs.com/. ②Ji Yang, Zhang Ping, End-to-End Reconfiguration Wireless Network Technology, Beijing: Beijing University of Posts and Telecommunications Press, 2006. 

The research of Japan's e-Japan plan proposes a future mobile communication system structure - MIRAI (Multimedia Integrated network by Radio Access Innovation). The MIRAI system adopts Common Access as a heterogeneous access network integration solution, and manages multiple wireless access technologies in a specific area by setting a Basic Access Network (BAN) unit in the access network. The BAN always maintains signaling interaction with the basic access component (BAC) in the terminal located in this specific area, so as to complete the universal access of the terminal user in this area, reducing the terminal scanning RAN and signaling processing. For details, see: ①Wu Gang, M.Mizuno, P.J.M.Havinga, "MIRAI Architecture for Heterogeneous Network," IEEE Communications Magazine, vol.40, no.2, Feb.2002, pp.126-134.② "Seamless integrated network system for wireless communication system," United States Patent, No.7069045, Jun.27, 2006.

However, the existing heterogeneous access network convergence technology still has the following deficiencies:

(1) E2R needs the support of reconfigurable network elements, and the existing network facilities do not support reconfiguration function, so E2R has difficulty in reusing existing network facilities, and rebuilding reconfigurable network facilities supporting E2R requires more cost;

(2) In order to realize the manageability, controllability, and configurability of reconfiguration capabilities, E2R needs to define a complete management framework, a complete interaction process and interface, and a joint radio resource management and spectrum management mechanism. The research and development of these technologies Standardization will go through a long process;

(3) E2R requires real-time download of available mode-related software during vertical switching, which not only increases the switching delay and makes the switching response time longer, but also occupies the system transmission bandwidth and reduces the utilization rate of the wireless spectrum;

(4) The MARAI system provides a general access scheme for the existing heterogeneous network, but there is no research on the specific access strategy and the multiplexing strategy of multiple communication modes;

(5) The MIRAI access network fusion solution cannot fundamentally solve the problem of massive data loss during vertical handover. The vertical handover of the mobile terminal during the session due to reasons such as movement or wireless link quality, the disconnection of the data link before and after the handover, and the process of re-establishing the link lead to the loss of all link buffer data in the old access network;

(6) The access network integration solution of the MARAI system cannot provide flexible coverage of the access network, cannot perform fast vertical switching, and does not provide enough support for access controllability and system scalability, and also for location management. , mobility management, radio resource management and other aspects are still facing great challenges. the

In the papers, patents and related publications that have been reported so far, there is no one that can not only reuse existing network facilities and access technologies, but also support flexible coverage, sensitive switching, and controllable access. Expandable access network integration solution. the

For the convenience of expression, the following terms (limited to the scope of this article) are explained:

Table of Contents: A list of communication modes, arranged in order for indexing. the

Directory frequency: the communication frequency when the terminal device and the base station perform control signaling interaction. the

Contents of the invention

Aiming at the multiple heterogeneity trend of future wireless communication networks, the present invention proposes a directory-based access network fusion scheme in a heterogeneous wireless environment. the

The following describes a directory-based access network fusion solution in a heterogeneous wireless environment according to the present invention from the perspectives of physical structure and logical structure. the

From the perspective of physical structure, the network structure of the present invention is shown in Figure 1, which includes a terminal device 1, a signaling base station 2, N (N is a natural number greater than or equal to 1) service base stations 3, and a core network, wherein The base station (signaling base station and service base station) includes three parts: the base station antenna, the data processor and the wired connection equipment between them; the channel formed by the wireless connection 4 between the terminal equipment 1 and the signaling base station 2 is called Uu( Reference point between User Equipment and Infrastructure domains) signaling channel, the channel formed by the wireless connection 5 between the terminal device 1 and each service base station 3 is called the Uu service channel, and the wired connection 6 between the signaling base station 2 and the core network is called It is an Iu (Reference point between Access and Serving Network domains) signaling channel, and the wired connection 7 between each service base station 3 and the core network is called an Iu service channel. the

The terminal equipment has a built-in support for various wireless air interface modules and catalogs, wherein the wireless air interface module can be a multi-mode air interface module, or a reconfigurable air interface module based on SDR. Terminal equipment has only one access ID (Identification), which is uniquely determined by the ID allocated on the directory frequency. The terminal equipment is on standby on the directory frequency, and only the signaling channel works in the standby state, while various service channels are in a dormant state when the terminal equipment is on standby, and are opened for specific business needs. the

The signaling base station is a forwarding device specially used for processing and forwarding control information between the core network and the terminal, and the control information includes call access control, handover control, and the like. the

The service base station is a forwarding device for processing and forwarding service information between the core network and the terminal. The service information includes voice, image and so on. the

The base station antenna is a wireless signal transceiver, and its functions include signal physical layer processing and signal format conversion. The signal physical layer processing includes wireless signal modulation and demodulation, codec and other processing, and the format conversion is the data format conversion between the wireless signal format and the signal format suitable for wired equipment transmission. The signaling signal processor is a central processor for controlling signaling, and the wired connection device between the two can be an optical cable, a power line, a coaxial cable, and the like. the

The core network is the core network of the future mobile communication system, responsible for data storage and processing, including user authentication, data service search and control, etc. the

In conjunction with the above-mentioned physical structure, from the perspective of logical structure, the network structure of the present invention is as shown in Figure 2, including signaling base station 2, service base station 3, Uu signaling channel 4, Uu service channel 5, Iu signaling channel 6. Iu service channel 7, core network, table of contents 8, general access network 9 and service access network 10, etc. the

The directory table is a list of multiplexed communication modes, arranged in a certain order, and has a two-level tree structure, as shown in Fig. 3 . The root node of the tree structure is a logical concept, which provides a starting point for directory search. The root node is associated with M (M takes a natural number greater than or equal to 1) first-level subdirectory nodes, and each first-level subdirectory node represents a communication mode class. The above-mentioned communication mode category is a general term for multiple communication standards, such as the third generation mobile communication technology. Each first-level subdirectory node i is associated with N _i (N _i is a natural number greater than or equal to 1) second-level subdirectories, and each second-level subdirectory node represents a communication sub-mode or a specific access technology . The communication sub-mode or specific access technology refers to a specific communication standard or access scheme, such as the TD-SCDMA standard in the third generation mobile communication technology.

The directory table is divided into a terminal directory and a line directory according to its state, wherein the terminal directory is a list of communication modes inherently supported by the terminal equipment, and the terminal directory is an interface module or interface module integrated with the terminal equipment to represent the communication mode Corresponding to the reconfigurable interface module, the terminal directory only exists in the terminal device; the online directory is a list of the available communication modes of the terminal device in the current period, and the available communication modes refer to the available communication modes in the current period. Covering the intersection of the communication modes of the various networks of the terminal device and the communication modes supported by the terminal device, the online directory is a subdirectory of the terminal directory. The online directory is stored in the terminal equipment, the signaling base station and the core network respectively, and the online directories in the terminal equipment, the signaling base station and the core network are automatically and synchronously updated at a certain period. The terminal device online directory is associated with the terminal directory, and its function is to determine the available communication mode according to changes in the external environment; the signaling base station online directory is associated with the parameters of the service base station, and its function is to determine the service base station and the corresponding service base station under the jurisdiction of the signaling base station. Communication mode; the core network online directory is associated with user rights and customized services, and its function is to perform user authentication and call restriction. the

The general access network 9 is a network covered by signaling base stations, which is responsible for general access of terminal equipment, switching of service communication modes, switching of service base stations, and the like. the

The service access network 10 is a network covered by various service base stations, responsible for service access and service data transmission required by terminal equipment. the

The relationship between the general access network and the service access network is that one general access network can cover multiple service access networks and is responsible for signaling access of multiple service access networks. Common access networks and service access networks can overlap and overlap. In the overlapping boundary area of the common access network, the terminal device needs to select and switch the common access network, and there are multiple communication modes in the overlapping area of each service access network. the

The present invention also includes a directory indexing process, a terminal startup process, a service establishment process, a catalog update process, and a mode switching process. the

The directory indexing process is a process in which the terminal equipment, the signaling base station or the core network respectively search for nodes of the required communication mode in their online directories according to specific decision criteria. The steps of the directory indexing process are as follows (as shown in Figure 4, for the convenience of description, the terminal equipment, signaling base station or core network communication is called the index subject):

(1) The index subject enters the root node of the online directory, and obtains the first-level subdirectory nodes contained in the root node;

(2) The index body enters the i-th (1≤i≤M) first-level subdirectory node;

(3) The index subject obtains the second-level subdirectory node contained in the first-level subdirectory node in the previous step;

(4) The index body enters the jth (1≤j≤N _i ) second-level subdirectory node;

(5) The index subject judges the communication standard corresponding to the second-level sub-directory node in the previous step or the parameters of the specific access plan, and decides whether to choose this sub-mode as the final result. If it is selected, it will exit the entire directory indexing process. If If not selected, j=j+1, return to step 4;

(6) After the index subject completes the search of all the second-level subdirectory nodes of the first-level subdirectory, but still does not find a suitable communication mode, then i=i+1, return to step 2;

(7) The index subject searches all first-level subdirectories, and if the required communication mode is found, the search ends, and the directory indexing process is successful; if the entire directory is searched and no suitable communication mode is found, the directory indexing process fails. the

The terminal power-on process is the process from the power-on state of the terminal device to the standby state, and the steps are as follows:

(1) The user turns on the power of the terminal device;

(2) The terminal device conducts network search according to the terminal directory, performs directory indexing process according to the terminal directory, determines the currently available communication mode, and generates an online directory of the terminal device;

(3) The terminal device sends the online directory to the signaling base station that controls its general access to keep the online directory synchronized;

(4) The signaling base station stores the online directory of the user, links the communication mode in the online directory with the information of the service base station under its jurisdiction, and then forwards the online directory to the core network;

(5) The core network stores the user's online directory, and links the user ID, online directory, user business, signaling base station and other information, and then confirms to the terminal device;

(6) After receiving the confirmation from the core network, the terminal equipment enters the standby state. the

The described service establishment process is a process from terminal equipment dialing to establishing a communication link for service transmission, and the steps are as follows:

(1) The calling user dials;

(2) The terminal device sends an access request to the signaling base station, and the signaling base station performs the directory indexing process according to certain criteria according to its online directory;

(3) The calling user signaling base station selects the communication mode and service base station, and forwards the calling and called user information to the core network;

(4) The core network performs directory indexing process according to its online directory, confirms the legitimacy of the calling user's call-in request, and searches for the called user's signaling base station and other information according to the called user's ID;

(5) The core network sends a call request to the signaling base station responsible for the general access of the called user;

(6) The called user signaling base station receives the incoming call request, and selects the communication mode and service base station according to the online directory and service type;

(7) After confirming that the above steps are successful, the core network returns confirmation information to the calling user and the called user respectively;

(8) After receiving the confirmation, the calling and called user signaling base stations respectively establish the data link between the core network, the calling user service base station and the calling user, as well as the data links between the core network, the called user service base station and the called user. Link;

(9) The service channel between the calling and called users and the core network is established, and the calling and called users enter a service transmission state. the

The directory update process is an online directory update process between terminal equipment, signaling base stations, and core networks, and the steps are as follows:

(1) The terminal device detects changes in the surrounding environment to determine whether the current communication mode has changed;

(2) If the currently available communication mode changes, the terminal device updates the online directory, deletes unavailable communication mode nodes, and adds new available communication mode nodes;

(3) The terminal device sends the updated online directory to the signaling base station responsible for its general access;

(4) The signaling base station updates its online directory and forwards it to the core network;

(5) The core network receives and updates the online directory, and returns a confirmation report;

(6) The terminal device receives the confirmation report, and the online directory update is completed. the

The mode switching process described above is a process in which the terminal device changes the current communication mode to a new communication mode in a call state, and the steps are as follows:

(1) The terminal device initiates a communication mode switching request to the signaling base station;

(2) The signaling base station performs a directory indexing process according to its online directory, and selects a new communication mode and its corresponding service base station;

(3) The signaling base station controls the terminal equipment to establish a service link with the new service base station and open a new service channel;

(4) When the new service channel works normally, the signaling base station controls the terminal equipment to disconnect from the old service base station;

(5) The terminal device completes the switching of the communication mode. the

The essence of the present invention is to introduce the general access concept, and separate the signaling access of the terminal from the service transmission by distinguishing the dedicated signaling base station and the service base station for the base stations in the system, that is, the signaling access of the terminal is Through the signaling base station, the Uu signaling channel and the Iu signaling channel are connected to the core network. The service transmission is through the service base station, and the Uu service channel and the Iu service channel exchange business data with the core network, thus ensuring the control signal. While ensuring the reliability of transmission, it meets the special needs of data services (such as high speed, real-time, etc.); multiplexes multiple communication modes in heterogeneous wireless networks, so that terminal devices can use different communication modes according to needs, thereby Make effective use of idle spectrum resources of various access technologies. The key technology of the present invention is that a signaling base station manages the signaling access of multiple service base stations through its online directory, wherein each node in the online directory of the signaling base station is associated with each service base station under the jurisdiction of the signaling base station . The signaling base station selects the required communication mode and service base station through the directory indexing process of its online directory. The directory indexing process of the signaling base station is actually an indexing process of the service base stations under its jurisdiction. the

The access network integration scheme proposed by the present invention adopts general access of control signaling, multi-mode multiplexing of service communication, and access management strategy based on directory, which provides convenience for communication mode selection and switching, and improves management conditions. Rationality, coverage flexibility, handover sensitivity, access controllability, and scalability support, is an efficient solution for access network integration of heterogeneous wireless networks. the

It should be declared that the working methods and technologies involved in various communication modes, and whether the network adopts reconfiguration technology will not affect the core idea of the present invention. the

The directory-based access network fusion scheme of the present invention has the following advantages:

(1) Versatility of access: Universal access separates signaling transmission from service transmission. On the one hand, control signaling is carried out on the signaling channel, which ensures the reliability of control information transmission and avoids problems caused by environmental information or coverage. The signaling is lost. On the other hand, service transmission is carried out on the service channel, and dynamic parameters can be adjusted according to service requirements such as transmission speed and call quality. the

(2) Mode reusability: the multiplexing of multiple communication modes can effectively utilize the allocated but underutilized spectrum resources, which can solve the problem of shortage of wireless communication spectrum resources, and choose corresponding ones according to the specific communication environment The communication mode gives full play to the advantages of various modes. At the same time, various communication modes do not stand by at the same time, but are only temporarily turned on when there is a business need, which saves the power of the mobile phone and enables the mobile phone to have a longer standby time. the

(3) Organized management: catalogs are divided into multi-level tree structures, and catalog-based management strategies make searching and updating more organized and faster. When performing mode selection and switching, the terminal device can search according to the directory, so that the selection and switching can be carried out conveniently and quickly. the

(4) Flexibility of coverage: The general access network governs multiple service access networks, and the general access network can flexibly select service access networks according to requirements to achieve flexible processing of service access coverage. the

(5) Sensitivity of handover: When the terminal equipment is handovered vertically, this solution can search the directory and select an appropriate communication mode to switch without repeating the network search process. the

(6) Controllability of access: By setting priority policies for the communication modes in the directory, the most suitable communication mode can be selected first, and users can customize services to access the network. the

(7) Universal applicability of terminals: This solution can be universally applied to universal access and mode multiplexing of all terminals (supporting multiple communication modes), regardless of whether the terminal equipment is a multi-mode terminal or a reconfigurable terminal. the

(8) System scalability: This solution does not rely on the technology of multiple heterogeneous networks, and the scalability of the directory makes the system compatible and expandable to future mobile communication technologies. the

To sum up, the present invention makes full use of the characteristics of coexistence of multiple communication systems in the future mobile communication network environment, and proposes a heterogeneous access network fusion solution, based on directory-based universal access multi-mode multiplexing. Compared with E2R, this solution can reuse existing network facilities and access technologies of existing networks, and the vertical handover delay is lower. Compared with MARAI, the vertical switching reliability of this solution is higher, and the directory-based management strategy makes the communication management more organized, the coverage is more flexible, the switching is more sensitive, the access is more controllable, and it is scalable. the

Drawings and descriptions of drawings

Accompanying drawing 1 is physical structure figure of the present invention

Wherein, 1 is a terminal device, 2 is a signaling base station, 3 is a service base station, 4 is a Uu signaling channel, 5 is a Uu service channel, 6 is an Iu signaling channel, and 7 is an Iu service channel. the

Accompanying drawing 2 is a logical structure diagram of the present invention

Among them, 8 is a directory table, 9 is a general access network, and 10 is a service access network. the

Accompanying drawing 3 is catalog tree structure of the present invention

Accompanying drawing 4 is the flowchart of catalog index process of the present invention

Detailed ways

A multi-mode multi-standby mobile device has built-in GSM, WiFi, and WCDMA interface modules, that is, the device terminal catalog includes three communication modes of GSM, WiFi, and WCDMA. After the user turns on the mobile phone, the user moves at a speed of 4km/h. During the movement, the user experiences four states: power-on, standby, call, and call switching. the

I. Power on -> standby, at this time the communication environment is covered by GSM, WiFi, and WCDMA networks. There is one signaling base station, M GSM base stations, N WiFi base stations, and L WCDMA base stations in this area

(1) The user turns on the power of the terminal device;

(2) The terminal device conducts a network search on the terminal directory, judges the available communication modes according to the environment of the terminal, generates an online directory (the online directory includes three communication modes of GSM, WiFi, and WCDMA), and sends the online directory and user information to To the signaling base station responsible for its access control;

(3) The terminal device sends the online directory to the signaling base station that controls its general access to keep the online directory synchronized;

(4) The signaling base station stores the user's online directory, and links the GSM, WiFi, WCDMA communication modes with the corresponding service base station information, and then forwards the online directory to the core network;

(5) The core network stores the user's online directory, and links the user ID, online directory, user business, signaling base station and other information, and then confirms to the terminal device;

(6) After the terminal device receives the confirmation from the core network, it enters the standby state;

II. Standby -> Call, at this time the user's environment is covered by GSM, WiFi, and WCDMA networks. There is one signaling base station, M GSM base stations, N WiFi base stations, and L WCDMA base stations in the area

(1) The calling user dials;

(2) The terminal device sends an access request to the signaling base station, and the signaling base station performs the directory indexing process according to the highest transmission rate criterion according to its online directory;

(3) The calling user signaling base station selects the WiFi communication mode to communicate with the service base station, and forwards the calling and called user information to the core network;

(4) The core network confirms the legitimacy of the calling user's call-in request, and searches for the called user's signaling base station and other information according to the called user's ID;

(5) The core network sends a call request to the signaling base station responsible for the general access of the called user;

(6) The called user signaling base station receives the incoming call request, and selects the communication mode and service base station according to the online directory and service type;

(7) After confirming that the above steps are successful, the core network returns confirmation information to the calling user and the called user respectively;

(8) After receiving the confirmation, the calling and called user signaling base stations respectively establish the data link between the core network, the calling user service base station and the calling user, as well as the data links between the core network, the called user service base station and the called user. Link;

(9) The service channel between the calling and called users and the core network is established, and the calling and called users enter the service transmission state;

III. Call switching, the user enters the suburb during the call, and there are only two communication modes of GSM and WCDMA in the environment. At this time, there is a signaling base station in the area, P GSM base stations, and Q WCDMA base stations

(1) Since the WiFi network is no longer covered, the call needs to be switched, and the terminal device initiates a communication mode switching request to the signaling base station;

(2) The terminal device checks the online directory, performs the directory indexing process, and determines that GSM is a new communication mode according to the communication reliability criterion;

(3) The signaling base station selects the service base station corresponding to the GSM communication mode;

(4) The signaling base station controls the terminal equipment and the new GSM service base station to establish a GSM service link and open a new service channel;

(5) When the new service channel works normally, the signaling base station controls the terminal equipment to disconnect from the old WiFi service base station;

(6) The terminal equipment completes the switching of service transmission;

IV. Call -> Standby, the user hangs up when the call ends

(1) The user call ends, and the service channel between the terminal equipment and the GSM service base station is disconnected;

(2) The user returns to the standby state;

In the above-mentioned implementation mode, the advantages of the solution of the present invention have been well reflected. The general access of control signaling, multi-mode multiplexing of service communication, and access management strategy based on directory are adopted as the communication mode Selection and switching provide convenience, improve management organization, coverage flexibility, switching sensitivity, access controllability, and provide scalability support. It is an efficient solution for the integration of access networks in heterogeneous wireless networks. plan. the

Claims (4)

1. Under the heterogeneous wireless environment based on the Access Network fusion method of catalogue, this Access Network comprises terminal equipment (1), a signaling base station (2), N business base station (3), and core net, be characterised in that: the wireless connections (4) between terminal equipment (1) and signaling base station (2) form the Uu signalling path, wireless connections (5) form the Uu service channel between terminal equipment (1) and each business base station (3), wired connection (6) between signaling base station (2) and the core net forms the Iu signalling path, and the wired connection (7) between each business base station (3) and the core net forms the Iu service channel; Contain the terminal catalogue in terminal equipment (1) lining, in terminal equipment (1), signaling base station (2), core net, all contain line directory; Described line directory and/or terminal catalogue be various communication patterns according to certain tactic tabulation, and be the secondary tree; Wherein the root node of tree is a logical concept, and the starting point of directory search is provided; Root node is related with M one-level subdirectory node, and each one-level subdirectory node is represented a kind of communication pattern class; Each one-level subdirectory node i again with N _iThe association of individual secondary subdirectory, each secondary subdirectory node is represented a kind of communicator pattern or a kind of concrete access technology;

   Its feature also comprises: the directory index process of maintain communications operate as normal, starting up of terminal flow process, business are set up flow process, catalogue more new technological process, mode switch flow process under the heterogeneous wireless environment;

   Described directory index process be terminal equipment, signaling base station or core net according to specific decision rule, the process of the node of the needed communication pattern of search in the line directory therein respectively, its step is as follows:

   (1) index body enters the line directory root node, obtains the one-level subdirectory node that root node comprises;

   (2) index body enters i one-level subdirectory node, wherein 1≤i≤M;

   (3) index body obtains the secondary subdirectory node that comprised of one-level subdirectory node in step;

   (4) index body enters j secondary subdirectory node; 1≤j≤N _i

   (5) index body is passed judgment on the parameter of the pairing communication standard of secondary subdirectory node in last step or concrete access scheme, whether decision selects for use this subpattern as final result, if select for use and then withdraw from whole directory index process,, get back to step 4 if do not select then j=j+1 for use;

   (6) index body is finished after the search all secondary subdirectory nodes of this one-level subdirectory node, does not still find suitable communication pattern, and then i=i+1 gets back to step 2;

   (7) index body is searched for all one-level subdirectory nodes, if find the communication pattern that needs then to finish search, and the success of directory index process; If whole directory search finishes and does not find suitable communication pattern, the directory index procedure failure;

   Described starting up of terminal flow process is the process of terminal equipment open state to holding state, and its step is as follows:

   (1) user starting up terminal equipment power supply;

   (2) terminal equipment carries out web search according to the terminal catalogue, carries out the directory index process according to the terminal catalogue, determines current available communication pattern, and generates the line directory of terminal equipment;

   (3) terminal equipment sends to the signaling base station of controlling its general access with line directory, to keep the synchronous of line directory;

   (4) this user's online catalogue of signaling base station stored, and the business base station informational linkage of communication pattern in the line directory and its administration got up, then line directory is transmitted to core net;

   (5) core net is stored this user's online catalogue, and user ID, line directory, customer service, signaling base station information are connected, and confirms to terminal equipment then;

   (6) after terminal equipment is received the affirmation of core net, enter holding state;

   It is that terminal equipment dials in to the process of carrying out professional communication link transmitting foundation that described business is set up flow process, and its step is as follows:

   (1) calling subscriber's dialing;

   (2) terminal equipment sends the request of access to the signaling base station, and the signaling base station is carried out the directory index process according to its line directory with certain criterion;

   (3) base station selected communication pattern of calling subscriber's signaling and business base station, and calling and called user profile is transmitted to core net;

   (4) core net is carried out the directory index process according to its line directory, confirms the legitimacy of calling subscriber's incoming call request, and searches called subscriber's signaling base station information according to call subscriber ID;

   (5) core net is to the signaling base stations transmit call request of being responsible for the general access of called subscriber;

   (6) called subscriber's signaling base station receives the incoming call request, and selects communication pattern and business base station according to line directory and type of service;

   (7) after core net is confirmed the above-mentioned steps success, return confirmation to calling subscriber and called subscriber respectively;

   (8) receive after the affirmation calling and called subscriber signaling base station, sets up the data link between core net, calling subscriber's business base station and the calling subscriber respectively, and the link of core net, called subscriber's business base station and called subscriber's data;

   (9) service channel between calling and called user and the core net is set up, and the calling and called user enters traffic state;

   Described catalogue more new technological process is a line directory renewal process between terminal equipment, signaling base station, the core net, and its step is as follows:

   (1) terminal equipment detects surrounding environment change, determines whether current communication pattern changes;

   (2) if current available communication pattern changes, then terminal equipment upgrades line directory, deletes disabled communication pattern node, adds new available communication pattern node;

   (3) the signaling base station of being responsible for its general access issued the line directory that upgrades by terminal equipment;

   (4) its line directory is upgraded in the signaling base station, and is transmitted to core net;

   (5) core net receives and upgrades line directory, returns and confirms report;

   (6) terminal equipment confirmation of receipt report, line directory are upgraded and are finished;

   Described mode switch flow process be terminal equipment under talking state, change current communication pattern and be the process of new communication pattern, its step is as follows:

   (1) terminal equipment is initiated the communication pattern handoff request to the signaling base station;

   (2) the directory index process is carried out according to its line directory in the signaling base station, select new communication pattern and with its corresponding service base station;

   (3) signaling base stations control terminal equipment and new business base station are set up service chaining, open new service channel;

   (4) after new service channel operate as normal, signaling base stations control terminal equipment and old business base station break link;

   (5) terminal equipment is finished the switching of communication pattern.
2. 2. under the heterogeneous wireless environment according to claim 1 based on the Access Network fusion method of catalogue, it is characterized in that: described terminal catalogue be terminal equipment the tabulation of communication pattern of intrinsic support, the terminal catalogue be with terminal equipment the interface module or the reconfigurable interface module of integrated representative communication pattern corresponding, the terminal catalogue only is present in the terminal equipment.
3. 3. under the heterogeneous wireless environment according to claim 1 based on the Access Network fusion method of catalogue, it is characterized in that: described line directory is the tabulation of terminal equipment available communication pattern in the current period, and available communication pattern is meant the communication pattern of the diverse network that can cover this terminal equipment in the current period and the common factor of the communication pattern that this terminal equipment is supported, therefore line directory is a subdirectory of terminal catalogue, and the line directory in terminal equipment, signaling base station and the core net was undertaken upgrading synchronously automatically by certain cycle.
4. 4. based on the Access Network fusion method of catalogue, it is characterized in that under the heterogeneous wireless environment according to claim 1:

   This Access Network comprises universal access network (9) and service access net (10), and described universal access network (9) is the network that the signaling base station is covered, and is responsible for the general access of terminal equipment, the switching of service communication pattern, the switching of business base station; Described service access net (10) is the network that each business base station covers, and is responsible for required service access of terminal equipment and business data transmission;

   The relation of described universal access network (9) and service access net (10) is, a universal access network can cover a plurality of service access nets, the signaling of being responsible for a plurality of service access nets inserts, between the universal access network (9), can intersect between the service access net (10) and overlapping, superposition boundary zone at universal access network (9), terminal equipment need carry out the selection and the switching of universal access network, has plurality of communication schemes in the overlapping region of each service access net (10).

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