CN101184338A - User access method and gateway device in WIMAX system - Google Patents

Abstract

The embodiment of the present invention discloses a method for user access control, which is applied in the Worldwide Interoperability for Microwave Access WIMAX system including the access service network ASN and the connection service network CSN, the access service network ASN is connected with at least one connection service The network CSN is connected, and the method includes: the access service network ASN receives an access request from the terminal, and obtains domain information of the terminal; the ASN determines the connection service that the terminal accesses according to the domain information of the terminal Network CSN. The embodiment of the present invention also provides a gateway device. By adopting the technical solutions provided by the embodiments of the present invention, it is possible to selectively or strategically control user access, meet the needs of users who have already connected to the network for network resources, and provide better quality of service for users who have connected to the network , improve user satisfaction.

Description

User access method and gateway device in WIMAX system

technical field

The invention relates to the field of microwave access global interoperability WIMAX, in particular to a user access method and gateway equipment in the WIMX system.

Background technique

With the development of communication technology, the requirements for network access technology also increase accordingly. Worldwide Interoperability for Microwave Access (WiMAX) is a wireless metropolitan area network access technology with a maximum transmission speed of 75Mbit/s and a signal transmission radius of 50 kilometers, which can basically cover the outskirts of the city. Due to this long-distance transmission feature, WiMAX will not only be able to solve wireless access technology, but also be used as a wireless extension of wired network access technology (such as: cable TV cable, digital subscriber loop DSL), and conveniently realize remote areas. network connection.

FIG. 1 is a schematic diagram of a WiMAX network structure in the prior art. A WiMAX network consists of an Access Service Network (ASN) and a Connection Service Network (CSN). R1, R2, R3, R4, and R5 represent interfaces between network logical entities. FIG. 2 is a schematic diagram of an ASN network structure in the prior art. The ASN network includes two logical entities, a base station (BS) and an ASN gateway (ASN-GW). R1, R6 and R8 represent interfaces between network logical entities.

ASN: ASN is defined as a collection of network functions that provide wireless access services for WiMAX terminals. ASN includes BS and ASN-GW network elements. ASN mainly provides the following functions:

BS functions:

-Provides layer 2 connectivity for BS and MS

- Radio resource management

-Measurement and power control

- Compression and encryption of air interface data

Functions of ASN-GW:

-Provide client functions for MS authentication, authorization and accounting functions.

-Supports network discovery and selection for NSP

-Provides the MS with the relay function of the third layer information (such as IP address allocation)

- Radio resource management

In addition to the above functions, it can also include (optional functions):

-Intra-ASN switching

-MS paging and location management

- Tunnel management between ASN-CSN, which is equivalent to the external agent (FA) in mobile IP technology

-Visit location registration

CSN: CSN is defined as providing IP connection services for WiMAX terminals. CSN can provide the following functions:

- IP address allocation of MS

-Internet access

-AAA proxy or server and prepaid server

-User-based authorization control

- The tunnel from ASN to CSN is equivalent to the home agent (HA) in mobile IP technology

- Tunnel between CSNs in case of roaming

-Switching between ASNs

-Various WiMAX services (such as location-based services, multimedia multicast and broadcast services, IP multimedia subsystem services)

Terminal: including mobile station (MS) and fixed station (SS), MS includes mobile phone, personal digital assistant (PDA) or other mobile multimedia terminals, etc., SS includes fixed telephone or other fixedly installed multimedia terminals. FIG. 3 is a network structure diagram of sharing an ASN in the prior art. R3 represents the interface between network logic entities. In an actual network architecture, multiple CSNs may share the same ASN, and the ASN and the MS exchange information so that the ASN can determine which CSN the MS should access. When a mobile station (MS)/fixed station (SS) accesses a CSN through an ASN, the ASN-GW will judge whether the MS/SS can access according to its resource usage. If the following conditions are met at the same time, the MS/SS SS can access. Otherwise MS/SS cannot access.

1. The number of accessible MS/SS is greater than 0;

2. The number of idle service flows is not less than the number of service flows in this MS/SS access application;

3. The idle bandwidth is not less than the guaranteed bandwidth of this MS/SS access application.

In the process of realizing the present invention, the inventor finds that there are at least the following problems in the prior art:

With the above access scheme, access control can only be performed based on MS/SS, and it is impossible to control the use of network resources of the access network by the connection service network CSN. Control the use of network resources of the access network by the connection service network CSN

Contents of the invention

The purpose of the embodiments of the present invention is to provide a user access method and a gateway device in a WIMAX system, and control the use of network resources of the access network by service providers in the connection service network CSN.

An embodiment of the present invention provides a method for user access control, which is applied to a Worldwide Interoperability for Microwave Access WIMAX system including an access service network ASN and a connection service network CSN. The access service network ASN is connected to at least one connection service The network CSN is connected, and the method includes:

The access service network ASN receives the terminal's access request, and acquires the domain information of the terminal;

The ASN determines the connection service network CSN that the terminal accesses according to the domain information of the terminal.

The embodiment of the present invention also provides a gateway device, the gateway device is connected to at least one connection service network CSN, and is used to control the access of terminal devices in the WIMAX system, wherein the device includes:

a receiving unit, configured to receive an access request initiated by the terminal through the base station;

an acquiring unit, configured to acquire domain information related to the terminal device;

The judging unit is configured to judge the connection service network corresponding to the access request received by the receiving unit according to the domain information acquired by the acquiring unit.

Using the user access method and gateway device in the WIMAX system provided by the embodiment of the present invention, the connection service gateway accessed by the terminal is determined through the domain information of the terminal, so as to control the use of network resources of the access network by the connection service network CSN, It can selectively or strategically control user access, meet the needs of users who have already connected to the network for network resources, provide better quality of service for users who have connected to the network, and improve user satisfaction.

Description of drawings

FIG. 1 is a schematic diagram of a WiMAX network structure in the prior art;

FIG. 2 is a schematic diagram of an ASN network structure in the prior art;

Fig. 3 shows the network structure diagram of sharing ASN in the prior art;

FIG. 4 is a flowchart of a method for user access control in Embodiment 1 of the present invention;

FIG. 5 is a schematic structural diagram of a gateway device in Embodiment 4 of the present invention.

Detailed ways

The user access control method and gateway device in the following embodiments of the present invention are applied to the Worldwide Interoperability for Microwave Access WIMAX system including the access service network ASN and the connection service network CSN, wherein the access service network ASN is connected to at least one The service network CSN is connected.

FIG. 4 is a flowchart of a method for user access control in Embodiment 1 of the present invention.

401. The access service network ASN receives the access request of the terminal, and acquires domain information of the terminal.

During the process of receiving the access request from the terminal, the ASN can pre-configure terminal information on the ASN, and the ASN can also negotiate some air interface parameters with the terminal.

After receiving the terminal's access request, the ASN can obtain the domain information of the terminal in the following two ways:

The ASN negotiates with the terminal whether authentication is required;

If not authenticated, ASN obtains the domain information of the terminal from the pre-configured terminal information;

If authenticated, the ASN obtains the domain information of the terminal during the authentication process.

402. The ASN determines the connection service network CSN that the terminal accesses according to the domain information of the terminal.

The domain information of the terminal is the domain name carried by the terminal, which is the domain name of the CSN that the terminal accesses. For example, the domain name of CSN_1 is aaa.com, and the domain name of CSN_2 is bbb.com. When the ASN obtains the domain name carried by the terminal is aaa.com , the ASN knows that the terminal belongs to CSN_1.

Furthermore, in an actual network, there may be multiple Network Service Providers (Network Service Providers, NSPs) in a CSN, and each NSP is assigned a different domain name, and the terminal can also select the NSP to access in the domain information. For example, there are three network service operators in CSN_1, NSP_1, NSP_2 and NSP_3, the domain name of NSP_1 is operator1.aaa.com, the domain name of NSP_2 is operator2.aaa.com, and the domain name of NSP_3 is operator3.aaa .com, when the ASN obtains that the domain name carried by the terminal is operator 2.aaa.com, the ASN knows that the terminal belongs to NSP_2.

After the ASN acquires the domain information of the terminal, the ASN can also negotiate network access parameters with the terminal. The network access parameters include at least one of: the maximum number of uplink and downlink connection identifiers CIDs and the maximum number of uplink classifiers.

If authenticated, the ASN can obtain not only the domain information of the terminal, but also the QoS parameters of the terminal during the authentication process. The QoS parameters include at least one of the number of service flows to be created by the terminal and the guaranteed bandwidth to apply for. The ASN judges whether to access the terminal according to the QoS parameters.

The above-mentioned ASN judges whether to access the terminal according to the QoS parameters, specifically, to judge whether the CSN accessed by the terminal satisfies the following conditions:

Condition 1. The number of CSN re-accessible users is greater than 0;

Condition 2. The number of idle service flows of the CSN is not less than the number of service flows of this MS/SS access application;

Condition 3. The idle bandwidth of the CSN is not less than the guaranteed bandwidth of this MS/SS access application.

Among them, one of condition 1 and condition 2 is at least the condition that needs to be met. When the number of access terminals is less than the number of CSN re-access users, for example, the number of terminals requesting access is 2, and the number of CSN re-access users is 3. , and the performance of the access network does not limit the number of service flows and bandwidth, only condition 1 can be satisfied; when only one terminal accesses, the number of idle service flows of the CSN is not less than the number of service flows of this MS/SS access application , which means that the number of re-accessible users of the CSN is greater than 0, and the performance of the access network does not limit the bandwidth, only condition 2 is satisfied.

Condition 3 is an optional condition that can be satisfied. According to the performance requirements of the access network, when the access network requires bandwidth limitation, condition 3 is a condition that needs to be met; when the access network does not limit the bandwidth, you can Condition 3 does not need to be met.

After the above-mentioned ASN judges the access terminal according to the QoS parameters, it can also apply for an IP address for the terminal through a Dynamic Host Configuration Protocol (DHCP) process.

Further, after the above-mentioned ASN judges the access terminal according to the QoS parameter, it may also create a preset service flow for the terminal.

In the second embodiment, the method for user access control in the first embodiment is applied to the network scenario where two or more CSNs access one ASN, and in the process of user access to the CSN, control the access of different CSNs to the network resources of the ASN use.

MS_1 and MS_2 are users under CSN_1, and MS_3 is a user under CSN_4. CSN_1, CSN_2, CSN_3, and CSN_4 all use ASN_1 as their access network.

The domain name of CSN_1 is aaa.com, and the domain name of CSN_4 is bbb.com.

The network resource distribution of CSN under ASN is as follows:

CSN_1: Bandwidth 10Mbps; service flow 10; MS/SS number 1;

CSN_4: Bandwidth 20Mbps; service flow 20; MS/SS number 5;

MS_1 accesses the network and applies for 5Mbps; 6 service flows; 1 MS/SS. ASN_1 knows that MS_1 belongs to CSN_1 according to the domain name aaa.com carried by MS_1. At this time, the idle bandwidth of CSN_1 resources is 10 Mbps>5 Mbps; 10 idle service streams>6; idle MS/SS number 1>=1, so MS_1 can access CSN_1 through ASN_1.

MS_2 accesses the network and applies for 3Mbps; 2 service streams; 1 MS/SS. ASN_1 knows that MS_2 belongs to CSN_1 according to the domain name aaa.com carried by MS_2. At this time, the idle resource bandwidth of CSN_1 is 5 Mbps; there are 4 idle service flows; and the number of idle MS/SS is 0, so MS_2 cannot access CSN_1 through ASN_1.

MS_3 accesses the network and applies for 10Mbps; 2 service streams; 1 MS/SS number. According to the domain name aaa.com carried by MS_3, ASN_1 knows that MS_3 belongs to CSN_4. At this time, the resource idle bandwidth of CSN_4 is 20Mbps>10Mbps; 20 idle service streams>2; 5 idle MS/SSs>=1, so MS_3 can access CSN_4 through ASN_1.

Embodiment 3, the user access control method in Embodiment 1 is applied to the network scenario where multiple CSNs access one ASN. The difference from Embodiment 2 is that in this embodiment, there are multiple One NSP controls the use of ASN network resources by different NSPs under the CSN during the user access process of the CSN.

CSN_1 and CSN_2 use ASN_1 as their access network.

The domain name of CSN_1 is aaa.com, and the domain name of CSN_2 is bbb.com.

There are three network service providers in CSN_1: NSP_1, NSP_2 and NSP_3. The domain name of NSP_1 is operator1.aaa.com, the domain name of NSP_2 is operator2.aaa.com, the domain name of NSP_3 is operator3.aaa.com,

MS_1 is a user under sub-CSN_1, MS_2 is a user under sub-CSN_2, and MS_3 is a user under sub-CSN_3.

The network resource distribution of the sub-CSN under the ASN is as follows:

NSP_1: Bandwidth 10Mbps; service flow 10; MS/SS number 1;

NSP_2: 5Mbps bandwidth; 6 service streams; 0 MS/SS;

NSP_3: Bandwidth 20Mbps; service flow 20; MS/SS number 5.

MS_1 accesses the network and applies for 5Mbps; 6 service flows; 1 MS/SS. ASN knows that MS_1 belongs to NSP_1 according to the domain name carried by MS_1: operator 1.aaa.com. At this time, the idle bandwidth of NSP_1 resources is 10Mbps>5Mbps; 10 idle service streams>6; idle MS/SS number 1>=1, so MS_1 can access NSP_1 through ASN.

MS_2 accesses the network and applies for 3Mbps; 2 service streams; 1 MS/SS. ASN knows that MS_2 belongs to NSP_2 according to the domain name carried by MS_2: operator 2.aaa.com. At this time, the idle resource bandwidth of NSP_2 is 5 Mbps; there are 6 idle service flows; and the number of idle MS/SS is 0, so MS_2 cannot access NSP_2 through ASN.

MS_3 accesses the network and applies for 10Mbps; 2 service streams; 1 MS/SS number. According to the domain name carried by MS_3: operator 3.aaa.com, ASN_1 knows that MS_3 belongs to NSP_3. At this time, the idle bandwidth of NSP_3 resources is 20Mbps>10Mbps; 20 idle service streams>2; 5 idle MS/SSs>=1, so MS_3 can access NSP_3 through ASN_1.

FIG. 5 is a schematic structural diagram of a gateway device in Embodiment 4 of the present invention.

The gateway device is connected to at least one connection service network CSN, and is used to control the access of terminal devices in the WIMAX system. The devices include:

A receiving unit 501, configured to receive an access request initiated by a terminal through a base station;

An obtaining unit 502, configured to obtain domain information related to the terminal device;

The judging unit 503 is configured to judge the connection service network corresponding to the access request received by the receiving unit according to the domain information acquired by the acquiring unit.

The gateway device can be set independently, or integrated into the network control device, or integrated into the network switching device. A preferred solution is that the gateway device is integrated into the gateway of the access service network.

Furthermore, the device also includes:

The first configuration unit is configured to store domain information related to the terminal device during the configuration process;

The obtaining unit is also used to obtain domain information related to the terminal device from the configuration unit when the terminal is not authenticated.

Furthermore, the device also includes:

The second configuration unit is used to save the quality of service QoS parameters of the terminal during the authentication process;

The judging unit is also used to judge whether to access the terminal according to the QoS parameter.

Further, the device also includes:

The negotiating unit is configured to negotiate network access parameters of the terminal with the terminal.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be realized by means of software plus a necessary hardware platform, and of course all can be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, all or part of the contribution made by the technical solution of the present invention to the background technology can be embodied in the form of software products, and the computer software products can be stored in storage media, such as ROM/RAM, magnetic disks, optical disks, etc. , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute the methods described in various embodiments or some parts of the embodiments of the present invention.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.

Claims (14)

1. the method for a user access control, be applied to comprise in the micro-wave access to global intercommunication WIMAX system of access service network ASN and connectivity serving network CSN, described access service network ASN links to each other with at least one connectivity serving network CSN, it is characterized in that this method comprises:

The domain information of described terminal is obtained in the access request of described access service network ASN receiving terminal;

Described ASN determines the connectivity serving network CSN that described terminal inserts according to the domain information of described terminal.

2. method according to claim 1 is characterized in that, the described domain information that obtains described terminal comprises:

When to described terminal not during authentication, described ASN obtains the domain information of described terminal from pre-configured end message.

3. method according to claim 1 is characterized in that, the described domain information that obtains described terminal comprises:

When to described terminal authentication, described ASN obtains the domain information of described terminal in authentication process.

4. method according to claim 3 is characterized in that, this method also comprises:

Described ASN obtains the service quality QoS parameter of described terminal in authentication process;

Described ASN judges whether to insert described terminal according to described qos parameter.

5. method according to claim 4 is characterized in that, described qos parameter comprise at least the professional fluxion that described terminal will create and the assurance bandwidth that will apply for one of them.

6. method according to claim 5 is characterized in that, describedly judges whether to insert described terminal and comprises:

When the access customer number again of described CSN greater than zero, whether the idle bandwidth of judging described CSN inserts the assurance bandwidth of applying for less than counterpart terminal, when the idle bandwidth of described CSN is not less than the assurance bandwidth that counterpart terminal inserts application, then judge and insert described terminal; Otherwise, judge and do not insert described terminal.

7. method according to claim 5 is characterized in that, describedly judges whether to insert described terminal and comprises:

When the access customer number again of described CSN greater than zero, judge the professional fluxion whether the idle traffic fluxion of described CSN will be created less than counterpart terminal, when the idle traffic fluxion of described CSN is not less than the professional fluxion that counterpart terminal will be created, then judge and insert described terminal; Otherwise, judge and do not insert described terminal.

8. method according to claim 1 is characterized in that, this method also comprises:

Described ASN and described terminal are consulted into network parameters.

9. method according to claim 8 is characterized in that, describedly goes into network parameters and comprises at least: maximum up-downgoing connection identifier (CID CID number and up maximum grader number one of them.

10. gateway device, described gateway device links to each other with at least one connectivity serving network CSN, is used for controlling the access of WIMAX system terminal equipment, it is characterized in that described equipment comprises:

Receiving element is used for the access request that receiving terminal is initiated by the base station;

Acquiring unit is used to obtain the domain information relevant with described terminal equipment;

Judging unit is used for the domain information that obtains according to described acquiring unit, judges the connectivity serving network of the access request correspondence that described receiving element receives.

11. gateway device according to claim 10 is characterized in that, described gateway device is integrated in the access service network ASN gateway.

12. gateway device according to claim 10 is characterized in that, this equipment also comprises:

First dispensing unit is used in layoutprocedure, preserves the domain information relevant with described terminal equipment;

Described acquiring unit also is used for when described terminal not during authentication, is obtained the domain information relevant with described terminal equipment from described dispensing unit.

13. gateway device according to claim 10 is characterized in that, this equipment also comprises:

Second dispensing unit is used at authentication process, preserves the service quality QoS parameter of described terminal;

Described judging unit also is used for judging whether to insert described terminal according to described qos parameter.

14. gateway device according to claim 10 is characterized in that, this equipment also comprises:

Negotiation element is used for consulting with described terminal the network parameters of going into of described terminal.