CN101640919B - Method and device for user terminal to access network - Google Patents

Abstract

The embodiment of the invention discloses a method for accessing a user terminal to a network. The method comprises the following steps: receiving a DL-MAP message transmitted by a base station, wherein the DL-MAP message contains mobility restriction information of the network; continuing a network accessing process if the mobility restriction information of the network is in accordance with the requirement of the terminal. The embodiment of the invention also discloses a device for accessing the user terminal to the network. The method and the device for accessing the user terminal to the network can notify the mobility restriction information of the network of the user terminal on a network side, and ensure that the terminal can conveniently select a proper network for accessing when the terminal is accessed to the network.

Description

Method and device for user terminal to access network

technical field

The invention belongs to the technical field of communication, and in particular relates to a method and a device for a user terminal to access a network.

Background technique

WiMAX (Worldwide Interoperability for Microwave Access) is a wireless metropolitan area network technology based on the IEEE802.16 standard. The wireless side of the WiMAX network is a wireless metropolitan area network access technology based on the IEEE802.16d/e standard, using the physical layer of OFDM (Orthogonal Frequency Division Multiplexing) and OFDMA (OFDM Access) technology, which can effectively resist multipath fading. In the case of optimal channel fading, the transmission rate can approach 75Mbps.

The logical architecture of the WiMAX network is shown in Figure 1. The entire WiMAX network is mainly composed of the following three parts:

(1) Terminal: including SS (Subscriber Station, subscriber station) or MS (Mobile Station, mobile station), which is used by the terminal to access the WiMAX network.

(2) Access service network: ASN (Access Service Network, access service network) is defined as a set of network functions that provide wireless access services for WiMAX terminals. ASN includes BS (BaseStation, base station) and ASN-GW (ASN Gateway, ASN Gateway) network elements. The main functions of the BS network element are: providing L2 connection between BS and MS, wireless resource management, etc.; the main functions of the ASN-GW network element are: providing client functions for MS authentication, authorization and accounting functions, and providing Relay function of L3 information (such as IP address allocation), intra-ASN switching, etc.

(3) Connection service network: CSN (Connectivity Service Network, connection service network) is defined as providing IP connection services for WiMAX terminals. The CSN mainly includes logical entities such as prepaid servers, authentication, authorization and accounting servers, and the main functions provided are: MS IP address allocation, Internet access, AAA proxy or server, terminal-based authorization control, etc.

In order to realize the mobility limitation of the terminal, the mobility classification attribute is added in the subscription relationship of the user, including: fixed, nomadic and mobile. Among them, the mobile service refers to the data service that can continuously use the network when the terminal moves at a certain speed within the coverage area of the network side. The network side supports the switching of the terminal and ensures the continuity of the session during the switching process; the nomadic service refers to What is more important is that the terminal can access the network at different geographic locations. During the data service session, the terminal is generally fixedly attached to a certain access network. When the terminal moves to a new location, it needs to re-connect to the network and perform new Therefore, the nomadic service user terminal can initiate device reattachment, but it does not necessarily need to ensure the continuity of the session; the fixed service means that the terminal can only access the network in a fixed area to perform data services, and when leaving the In a fixed area, you cannot access the network.

For some operators in some countries, due to license restrictions, they can only operate fixed or nomadic network services. Therefore, for fixed and nomadic users, it is required to limit the mobility of their terminals.

The inventors found that in the prior art, during the terminal access to the network, the mobility restriction information of the network cannot be obtained, so the user terminal cannot select a suitable network for access according to its own requirements, which is inconvenient for the terminal to access the network.

Contents of the invention

Embodiments of the present invention provide a method and device for a user terminal to access a network, so as to enable the user terminal of this type to know mobility restriction information of the network, thereby making it convenient for the terminal to select an appropriate network to access when accessing the network.

The embodiment of the present invention adopts technical scheme as:

A method for a user terminal to access a network, comprising:

receiving a DL-MAP message sent by the base station, where the DL-MAP message includes network mobility restriction information;

Determine whether the access network meets the mobility requirements of the terminal according to the network mobility restriction information, and if so, continue the network access process.

A method for a user terminal to access a network, comprising:

Receiving the basic capability negotiation response SBC-RSP message or the service identity information advertisement SII-ADV message sent by the base station, the message carrying the mobility restriction information of the network service provider NSP;

According to the mobility restriction information of the NSP, an NSP that meets the mobility requirements of the terminal is selected to continue the network access process.

A method for a user terminal to access a network, comprising:

The base station receives the AuthRelay_EAP_Transfer message sent by the authenticator, and the message carries the mobility restriction information of the NSP;

A PKMv2-RSP message sent to the terminal, wherein the PKMv2-RSP message carries NSP mobility restriction information; so that the terminal selects an NSP that meets the terminal mobility requirements to continue the network access process according to the NSP mobility restriction information.

A terminal comprising:

A receiving module: used to receive an SBC-RSP message, an SII-ADV message or a PKMv2-RSP message from the base station, the message carrying NSP mobility restriction information;

A network access module: used to select an NSP that meets the terminal mobility requirements for access according to the mobility restriction information of the NSP;

or,

It is used to select other base stations to try to access when no NSP meets the mobility requirements of the terminal.

A terminal comprising:

Receiving module: receiving the DL-MAP message sent by the base station, the DL-MAP message includes the mobility restriction information of the network;

Network access module: used to determine whether the access network meets the terminal mobility requirements according to the network mobility restriction information, and if so, execute the network access process;

or

It is used to select other base stations for access when the access network does not meet the mobility requirements of the terminal.

In the method and device for user terminal accessing the network described in the embodiments of the present invention, the network side can notify the user terminal of network mobility restriction information, so that the terminal can select an appropriate network for access when connecting to the network.

Description of drawings

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

FIG. 2 is a flowchart of a method for a user terminal to access a network according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a device for a user terminal to access a network according to an embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a base station for a user terminal to access a network according to an embodiment of the present invention.

Detailed ways

Embodiments of the present invention provide a method and device for a user terminal to access a network. The network side can notify the user terminal of mobility restriction information of the network, so that the terminal can select a suitable network for access when accessing the network. The mobility restriction information refers to what types of mobile users are supported by the network, such as: fixed, mobile or nomadic.

The embodiments of the present invention will be further described below in conjunction with the accompanying drawings. The following embodiments will be described using the Wimax network as an example. Referring to FIG. 2, the process of terminal network access includes:

201. The MS scans and captures the downlink channel of a certain BS, then obtains synchronization with the channel, and obtains downlink and uplink parameters;

202. The MS and the BS perform an initial ranging process and adjust physical parameters;

203. The MS sends an SBC-REQ message to start the basic capability negotiation between the MS and the BS;

204. The BS sends a terminal reattachment request MS_PreAttachment_Req message to the Authenticator to notify the MS of network access;

205. The Authenticator sends a terminal reattachment response MS_PreAttachment_Rsp message to respond to the BS;

206. The BS sends an SBC-RSP message to the MS;

207. The BS sends MS_PreAttachment_Ack to the Authenticator to confirm that the SBC-REP has been received by the MS.

208. The Authenticator sends AuthRelay_EAP_Transfer to the BS to initialize the EAP verification process;

209. The BS sends a PKMv2-RSP/EAP transfer message to the MS;

The above process is the complete network access process of the wimax network terminal, and some steps after step 209 are omitted.

Embodiment 1: Using DL-MAP to carry network mobility restriction information;

In step 201, a bit or bits of the BS ID contained in the BS broadcast DL-MAP message are used to indicate the mobility restriction information of the network, or other fields in the DL-MAP are used to indicate the network mobility restriction information.

The MS scans the channel of a BS and obtains synchronization, then decodes the DL-MAP message broadcast by the BS, obtains the mobility restriction information of the network, and judges whether the access network meets the mobility requirements of the terminal according to the network mobility restriction. Then continue the network access process; if not, the MS continues to scan other BSs for access.

The mobility restriction information of the network is the support capability of the network or operator for fixed, nomadic or mobile users; the mobility requirement of the terminal is configured on the terminal and indicates the acceptance degree of the network or operator for different mobility restrictions of the terminal related information.

Other network access steps are similar to those shown in Figure 2 and will not be repeated here.

Embodiment 2: Using the SBC-RSP message to notify the terminal of the mobility restriction information of the NSP;

In this embodiment, the SBC-RSP sent by the BS to the MS includes the mobility restriction information of the NSP.

Referring also to Fig. 2, the improvements of the embodiment of the present invention are as follows:

In step 203, the MS sends an SBC-REQ message, and the SBC-REQ message includes indication information requesting an NSP list; this step belongs to the prior art;

Step 206, the BS sends a basic capability negotiation request SBC-RSP message to the MS, and the SBC-RSP message carries the mobility restriction information of the NSP;

Among them: the mobility restriction information of the NSP can be included in the NSP list of the SBC-RSP message;

NSP (network service provider) is a network service provider, and the NSP mobility restriction information can be the mobility restriction information of one or more NSPs in the NSP list;

The mobility restriction information of the NSP is the support capability of the NSP for fixed, nomadic or mobile users; the mobility requirement of the terminal is the relevant information configured on the terminal and indicating the acceptance degree of the terminal to different mobility restrictions of the NSP.

After receiving the SBC-RSP message, the MS selects an NSP that meets its own mobility requirements to continue network access according to the mobility restriction information of the NSP. If there is no NSP that meets the mobility requirements of the MS, the MS can interrupt the network access process at this BS, and select another BS to try to access again.

Other steps are similar to those in Fig. 2 and will not be repeated here.

Embodiment 3: Using the service identity information advertisement SII-ADV message broadcast by the BS to notify the terminal of the mobility restriction information of the NSP;

The SII-ADV message is periodically broadcast by the BS, and the message contains the NSP list, and the mobility restriction information of the NSP can be added to the message; where: the mobility restriction information of the NSP can be included in the NSP list of the SII-ADV message;

or,

In step 203, the MS includes the SIQ TLV request in the SBC-REQ message. After the BS receives the request, it sends the SII-ADV message to the MS. The message contains the NSP list, and the mobility restriction information of the NSP can be added to the message ;Wherein: the mobility restriction information of the NSP can be included in the NSP list of the SII-ADV message;

After the MS receives the SII-ADV message, it judges whether there is an NSP that meets the mobility requirements of the terminal according to the mobility restriction information of the NSP. If there is such an NSP, it selects the appropriate NSP to continue the network access process, otherwise it selects other BSs for access. enter.

Embodiment 4: The AuthRelay_EAP_Transfer message sent by the Authenticator to the BS carries the mobility restriction information of the NSP;

The network access process also refers to Figure 2, and its improvements are as follows:

Step 208, the Authenticator sends AuthRelay_EAP_Transfer to the BS to initialize the EAP verification process. The EAP Payload contained in the message can carry the NSP list, and the mobility restriction information of the NSP can be added to the message; wherein: the mobility restriction information of the NSP can be included in the AuthRelay_EAP_Transfer message in the NSP list;

Step 209, the BS forwards the NSP list and the mobility restriction information of the NSP to the MS by using the PKMv2-RSP/EAP transfer message.

Wherein the EAP transfer message belongs to the PKMv2-RSP message; the mobility restriction information of the NSP can be included in the NSP list of the PKMv2-RSP message.

The MS judges whether there is an NSP that meets its own mobility requirements according to the mobility restriction information of the NSP. If there is such an NSP, it selects an appropriate NSP to continue the network access process, otherwise it selects other BSs for access.

Other steps are similar to the corresponding steps in Fig. 2 and will not be repeated here.

The embodiment of the present invention also discloses a terminal, referring to FIG. 3 , including:

A receiving module: used to receive an SBC-RSP message, an SII-ADV message or a PKMv2-RSP message from the base station, the message carrying NSP mobility restriction information;

A network access module: used to select an NSP that meets the terminal mobility requirements for access according to the mobility restriction information of the NSP;

Or, it is used to select another base station to try to access when no NSP meets the mobility requirement of the terminal.

The embodiment of the present invention also discloses a terminal, referring to FIG. 3 , including:

Receiving module: receiving the DL-MAP message sent by the base station, the DL-MAP message includes the mobility restriction information of the network;

Network access module: used to determine whether the access network meets the terminal mobility requirements according to the network mobility restriction information, and if so, execute the network access process;

Or it is used to select other base stations for access when the access network does not meet the mobility requirements of the terminal.

The embodiment of the present invention also discloses a base station, including:

A sending module: a DL-MAP message for sending, where the DL-MAP message includes mobility restriction information of the network; or

A capability negotiation request SBC-RSP message or SII-ADV message for sending, where the message carries mobility restriction information of the NSP;

The embodiment of the present invention also discloses a base station, referring to Fig. 4, including:

A receiving module: used to receive the AuthRelay_EAP_Transfer message sent by the authenticator, the message carrying the mobility restriction information of the NSP;

A sending module: used to send a PKMv2-RSP message to the terminal, the message carrying the mobility restriction information of the NSP.

In the method and device for accessing a network by a user terminal in a fixed service area described in the embodiments of the present invention, the network side can notify the user terminal of network mobility restriction information, so that the terminal can select an appropriate network for access when accessing the network.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is a better implementation Way. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, such as a floppy disk of a computer , a hard disk or an optical disk, etc., including several instructions for enabling a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments of the present invention.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (12)

1. A method for a user terminal to access a network, comprising:

receiving a DL-MAP message sent by a base station, wherein the DL-MAP message contains mobility restriction information of a network; the mobility restriction information is a mobile classified user type supported by a network, and comprises the following steps: stationary, mobile or nomadic;

and judging whether the access network meets the mobility requirement of the terminal according to the network mobility restriction information, and if so, continuing the network access process.

2. The method of claim 1, wherein if the access network does not meet the mobility requirement of the terminal, selecting another base station for access.

3. A method for a user terminal to access a network, comprising:

receiving a basic capability negotiation response SBC-RSP message or a service identity information advertisement SII-ADV message sent by a base station, wherein the message carries mobility restriction information of a network service provider NSP; the mobility restriction information is a mobility classified user type supported by the NSP, and includes: stationary, mobile or nomadic;

and selecting the NSP meeting the terminal mobility requirement according to the mobility restriction information of the NSP to continue the network access process.

4. A scheme according to claim 3, characterized in that: the NSP mobility restriction information is included in an NSP list of an SBC-RSP message or an SII-ADV message.

5. The method of claim 3, wherein: the method further comprises the following steps:

the terminal sends a basic capability negotiation request SBC-REQ message to the base station, wherein the message carries indication information for requesting an NSP list.

6. The method of claim 3, wherein: if no NSP meets the mobility requirement of the terminal, the terminal interrupts the network access process at the base station and selects other base stations to attempt access.

7. A method for a user terminal to access a network, comprising:

a base station receives an AuthRelay _ EAP _ Transfer message sent by an authenticator, wherein the message carries mobility restriction information of NSP; the mobility restriction information is a mobility classified user type supported by the NSP, and includes: stationary, mobile or nomadic;

the method comprises the steps that a PKMv2-RSP message is sent to a terminal, and the PKMv2-RSP message carries NSP mobility restriction information; and enabling the terminal to select the NSP meeting the mobility requirement of the terminal according to the mobility restriction information of the NSP to continue the network access process.

8. The method of claim 7, wherein: the NSP mobility restriction information is contained in the NSP list of the PKMv2-RSP message.

9. A terminal, comprising:

a receiving module: the mobile terminal is used for receiving an SBC-RSP message, an SII-ADV message or a PKMv2-RSP message from a base station, wherein the message carries NSP mobility restriction information; the mobility restriction information is a mobility classified user type supported by the NSP, and includes: stationary, mobile or nomadic;

a network access module: the NSP is used for selecting the NSP meeting the terminal mobility requirement according to the mobility restriction information of the NSP for access;

or, when no NSP meets the mobility requirement of the terminal, selecting another base station to attempt access.

10. A terminal, comprising:

a receiving module: receiving a DL-MAP message sent by a base station, wherein the DL-MAP message contains mobility restriction information of a network; the mobility restriction information is a mobile classified user type supported by a network, and comprises the following steps: stationary, mobile or nomadic;

a network access module: the access network is used for judging whether the access network meets the terminal mobility requirement or not according to the network mobility restriction information, and if so, the network access process is executed;

or, when the access network does not meet the terminal mobility requirement, selecting other base stations for access.

11. A base station, comprising:

a sending module: for transmitting a DL-MAP message including mobility restriction information of a network therein; the mobility restriction information is a mobile classified user type supported by a network, and comprises the following steps: stationary, mobile or nomadic;

or, the SBC-RSP message or the SII-ADV message is used to send a basic capability negotiation response SBC-RSP message or a service identity information advertisement, where the message carries the mobility restriction information of the NSP; the mobility restriction information is a mobility classified user type supported by the NSP, and includes: fixed, mobile or nomadic.

12. A base station, comprising:

a receiving module: the authentication device is used for receiving an AuthRelay _ EAP _ Transfer message sent by the authentication device, wherein the message carries the mobility restriction information of the NSP; the mobility restriction information is a mobility classified user type supported by the NSP, and includes: stationary, mobile or nomadic;

a sending module: the method is used for sending a PKMv2-RSP message to the terminal, wherein the message carries the mobility restriction information of the NSP.

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