CN1248452C - General redirection method in use for wireless data service - Google Patents

Abstract

The invention discloses a general redirection method for wireless data services in the field of mobile communication, comprising: 1. configuring the redirection server address in the network on the mobile terminal side; 2. the mobile terminal initiating services to the redirection server in the network 3. The redirection server returns the address of the user's home service node to the service requester according to the construction of the service in the network; 4. After the mobile terminal obtains the address of the user's home service node, it further communicates with the home service node for details. business interaction. The method of the invention overcomes the shortcomings of poor network expansibility in the prior art, is not suitable for general decentralized construction and centralized construction schemes, and is too closely related to specific networks, and has good scalability and adapts to the requirements of general decentralized construction schemes.

Description

Generic redirection method for wireless data traffic

technical field

The invention relates to the field of wireless data services based on packet switching in a mobile communication system, and specifically relates to a method for a mobile terminal to obtain its own home service node address.

Background technique

With the continuous improvement of mobile networks, wireless data services have also been more and more widely used. According to people's demand for communication value-added services, mobile operators have also developed value-added services based on data services such as positioning services, WAP services, color E or MMS services in their operating networks. In the initial stage of developing these services, mobile network operators can generally adopt a centralized construction method, but with the continuous development of services, they must develop in the direction of decentralized construction. In the case of decentralized construction, in order to unify the service brand and facilitate the use of users, it is necessary to provide a unified configuration method for the users of the network, instead of using different configuration data in different node service areas.

In fact, in terms of the specific technology of decentralized construction, there are already a variety of solutions including the nearest intervention and HTTP (Hypertext Transfer Protocol, Hypertext Transfer Protocol) redirection and other methods. The nearest access solution has been adopted by China Unicom in the construction of WAP (Wireless Application Protocol, Wireless Application Protocol) gateway on its CDMA 1X network (see "China United Communications Co., Ltd. CDMA 1X Communication Network WAP Service Technology System"). Although China Unicom's network addresses in various regions have been planned in a unified manner, different regions are still isolated from each other. In the network of each region, the WAP gateway is configured with two IP addresses, one is a unified private address of the whole network (such as 10.0.0.1), and this address is configured in the terminal of the WAP user at the same time as the proxy (PROXY) address. The other is the public IP address configured by the network after the WAP gateway device is connected to the CDMA1X network. This address is used to address the WAP gateway device in the CDMA 1X network system. In the case of decentralized construction, several WAP gateway devices will have the same private address (such as 10.0.0.1) and different public IP addresses. When the user roams to a different place to use the WAP service, it will switch to the WAP gateway system in the different place, and use the WAP service in the nearest access mode. In this kind of business implementation scheme, if the networks in each region are built as a whole and are no longer isolated from each other, there will be address conflicts between multiple WAP gateway devices, which will lead to the inability of the nearest access scheme to be integrated in the whole Continue to apply under construction.

The HTTP redirection scheme has been adopted by China Mobile in the MMS service construction of the GSM/GPRS (Global System for Mobile communications, Global System for Mobile Communications/General Packet Radio Service) network (see China Mobile Communications Enterprise Standard "Multimedia Information Business Specifications"). The current MMS service is an upper-layer service that uses the WAP network as a bearer, and mainly uses the HTTP/WSP (WAP Session Protocol, WAP Dialogue Protocol) protocol to transmit service content. In specific services, users of the entire network use a uniform URL (Uniform Resource Locator, a representation method used to specify the location of information on the Internet WWW service program) to mark service nodes. Build a pair of HTTP redirect servers in the service network, determine the service node to which the sender user belongs according to the user number in the HTTP packet, and return a redirect message to the WAP gateway, so that the WAP gateway forwards the HTTP request to the user's home node . Under this business implementation scheme, it is required that the business content must be transmitted using the HTTP protocol, and for a large number of value-added services that do not use the HTTP protocol, the feasibility of this scheme will no longer exist.

Due to the maturity of mobile communication technology and the continuous upgrading of service networks, various value-added services are also expanding accordingly, and have gradually become the focus of development in the mobile communication industry. These value-added services can be realized in various ways, with large or small scales, and there is often the possibility of decentralized construction. This objectively puts forward the demand for a general decentralized construction solution with good scalability and good scalability for wireless data services. At present, no public documents discussing and solving the above problems have been retrieved, and there is no relevant solution.

Contents of the invention

The purpose of the present invention is to overcome the disadvantages of poor network expansibility in the prior art, not suitable for general decentralized construction and centralized construction schemes, and too close relationship with specific networks, in order to propose a kind of good expansibility and adapt to the needs of general decentralized construction schemes A generic redirection method for wireless data traffic.

In order to achieve the above object, the present invention proposes a general redirection method for wireless data services, which is characterized in that it comprises the following steps:

Step 1: Configure the redirection server address in the network on the mobile terminal side;

Step 2: Before using specific services, the mobile terminal first initiates a service request to the redirection server in the network in the form of a message. For example, the query request of DNS (Domain Name Service, domain name service) can be used to submit the user's service type and user mark IMSI (International Mobile Station Identifier, International Mobile Subscriber Identity Code) to the redirection server in the network. If a user with an IMSI number of 460123412345678 needs to query the home service node address of a certain service (for example, the name is AServ), a DNS request of "AServ: \\460123412345678" is sent;

Step 3: After receiving the service request, the redirection server in the network returns the address of the user's home service node to the service requester according to the construction of the service in the network;

Step 4: After obtaining the address of the service node to which the user belongs, the mobile terminal further interacts with the home service node for specific services.

The general redirection method for wireless data services based on packet switching proposed by the present invention has nothing to do with specific services. This method can be used no matter whether HTTP protocol is used to transmit service information or TCP/IP protocol is directly used to transmit service information. The method realizes the decentralized construction of the business. The method of the present invention has little to do with the current situation of the network in the region. No matter it is an isolated network or a whole network, as long as the network has a communication function, the method of the present invention can be adopted. Therefore, compared with the existing service realization method, the method of the present invention is not limited by the actual situation of the network and the specific protocol adopted by the specific wireless data service, and realizes the universality of the service. Once a redirection server is built in the network, it can provide services for all businesses. Through the method of the invention, the specific situation of service construction is shielded, and the goal of unified service for mobile network operators is realized.

Description of drawings

FIG. 1 is a schematic diagram of a service network where the method of the present invention is applied.

Figure 2 is a flow chart of the method of the present invention.

Detailed ways

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

The general redirection method for wireless data services described in the present invention is mainly to centrally build a pair of redirection servers in the service network, realize hot backup of services between the pair of redirection servers, and complete various business service address assignment work. In the specific business process, the mobile terminal and the redirection server on the network side perform an interactive operation to obtain the address of the business service node, and then the mobile terminal performs specific business interaction with the obtained business service node address. In this way, the purpose of shielding service nodes from users is achieved. For end users, they no longer need to care about whether the network system is centralized or decentralized, and whether users are in the home or roaming state. After the redirection server is configured uniformly, It is possible to conduct business processes in all cases.

Fig. 1 is a business network diagram of the method of the present invention. For convenience of description, it is assumed that there are two decentralized wireless data services in the network - A service and B service. Users of wireless data services in the network are wireless terminals, specifically mobile PCs (Personal Computers), PDAs (Personal Digital Assistants, personal digital assistants), or mobile phone users. The system is connected to the business service node. In the network, build a pair of redirection servers, which realize the hot backup of the business, so as to achieve the purpose of eliminating the single point of failure of the business. In business services, the pair of redirection servers can provide business redirection functions for A business and B business at the same time; in terms of service provision, it is assumed that A business builds two service nodes in different places of the whole network, and B business builds There are three service nodes.

Fig. 2 is a business flow chart of the method of the present invention. Just like the DNS server address set in WEB browsing on the Internet, a redirect server address must also be configured on the user's mobile terminal. When the user (assume its IMSI is 460101012345678) is performing corresponding services (such as A service Aserv), the interaction process can be divided into the following steps:

a. The mobile terminal uses the mode of message to initiate query request to redirection server, for example can adopt standard DNS (Domain Name Service) query request, in the URL of query (on the WWW service program of Internet, be used for specifying the expression method of information location ), fill in the character string of "AServ:\\460101012345678", and send it to the configured redirection server with a UDP (User Datagram Protocol) packet;

b. After receiving the query request, the redirection server judges the service node that the user belongs to according to the business construction situation and the service area range of each node, and returns the address of the node to the requesting user;

c. After obtaining the address of the service node of the service, the mobile terminal initiates a TCP/IP connection request to the node and performs specific service operations;

d. The mobile terminal disconnects from the server after completing all specific business operations.

In summary, adopting the method of the present invention can overcome the defects of the prior art, and can shield users from the actual construction situation of the network and the specific protocols adopted by the business. Businesses are applicable. In addition, the method of the present invention is relatively easy to implement no matter for the network side or for the wireless terminal, and once implemented, it is very easy to expand and has high practicability.

Claims (3)

1, a kind of general reorientation method that is used for wireless data service is characterized in that, may further comprise the steps:

The first step: Redirect Server address in the mobile terminal side configuration network;

Second step: portable terminal is before using concrete business, and the Redirect Server in network is initiated service request;

The 3rd step: the Redirect Server in the network according to construction situation professional in the network, returns to service requester with this user's home service node address after receiving service request;

The 4th step: portable terminal further carries out the mutual of concrete business with the home service node after obtaining the service node address of user attaching.

2, the general reorientation method that is used for wireless data service according to claim 1 is characterized in that, the Redirect Server in described second step in network is initiated the transmit mechanism of service request for sending message.

3, according to claim 1 or the 2 described general reorientation methods that are used for wireless data service, it is characterized in that, in described second step, the Redirect Server of portable terminal in network initiated the query requests that service request is mainly used domain name service, and user business type and user label " international mobile subscriber identity " are submitted to Redirect Server in the network.

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