CN101232706A - Route selection method of wireless communication data network and system thereof - Google Patents
Route selection method of wireless communication data network and system thereof Download PDFInfo
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- CN101232706A CN101232706A CNA2007100479618A CN200710047961A CN101232706A CN 101232706 A CN101232706 A CN 101232706A CN A2007100479618 A CNA2007100479618 A CN A2007100479618A CN 200710047961 A CN200710047961 A CN 200710047961A CN 101232706 A CN101232706 A CN 101232706A
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Abstract
The invention provides a method and a system thereof for selecting routes for a wireless communication data network. The system comprises a mobile terminal, a base station, a packet server and a packet control unit, wherein, the packet control unit communicates with the packet server through an IP network; any packet control unit can visit any packet server in a system; any packet server can provide services for any packet control unit in the system. The terminal will carry the mark of the selected packet server after building the initial link with the packet server. In the consequent link of the terminal and the following process of a first link, such as switchover/sleep, the packet control unit will select a route according to the packet server mark provided by the terminal. According to the system of the invention and the method thereof, the invention ensures that all links terminate in the same packet server and the packet server for providing service for the terminal is not changed in the process of switchover and sleep, thus reducing the complexity of network.
Description
Technical field
The present invention is used in wireless communication data network, relates in particular to the routing problem in multilink foundation in the Personal Handyphone System RFDC process, link switchover, the terminal sleeping process.
Background technology
In recent years, RFDC obtains large development, is all popularized in some fields as GRPS, CDMA1X, WiFi etc.Personal Handyphone System (PHS) is as a very distinctive wireless communication technology, and is very potential in the data communication applications field.Design Personal Handyphone System wireless data communication network solution must solve following major issue:
Multilink termination problem PAS terminal application wireless channel is a unit with a time slot 32Kbps, and for improving speed, terminal can be applied for a plurality of time slots, is established to the multiple communication links of grouping service.Therefore the multilink of a terminal initiation may be terminated a plurality of grouping services.
The link switchover problem: an outstanding feature of RFDC is terminal moving in network, switching between different base station may take place like this, switching between the different grouping control unit takes place, also may stride the switching of grouping service, user's IP address also can change like this.
Terminal sleeping problem: in order to save the terminal power supply and to improve link utilization, wireless data communication network is with the support terminal dormancy mechanism, when terminal sleeping, discharge air traffic channel and to the intermediate line link of grouping service, the link that dormancy awakening the is rebuild new grouping service that to terminate.
The autgmentability of network: wireless data application is progressively to promote and deep, so the construction of radio data network and disposing do not settle at one go, but network constantly expands, with increasing of satisfying the demands.Therefore the deployment of packet control unit and grouping service, necessary holding load equilibrium, back mechanism are supported autgmentability.
There are some limitations in existing technology and solution, as multilink termination problem, existing solution is the multilink of a terminal a plurality of grouping services that terminate, and sets up the tunnel between a plurality of grouping services, handle very complexity like this, and extension of network is bad; As the link switchover problem, solution was when striding the switching of grouping service in the past, in order to guarantee communication continuity, introduce mobile IP (Mobile IP) mechanism, in network, increase HA (home agent, Home Agent) and FA equipment such as (external agent, Foreign Agent), network investment will strengthen like this.
The invention provides a kind of simple method overcomes the above problems efficiently.
Summary of the invention
The invention provides a kind of wireless communication data network route selecting method, in the wireless communication data network of forming by portable terminal, base station, grouping service and packet control unit, realize routing, it is characterized in that described method comprises the steps: successively by packet control unit
Step 1): initially the setting up in the process of article one link of portable terminal, packet control unit carries out routing according to network access Identifier (Connection Network ID represents a certain ISP or a certain business);
Step 2): after article one link establishment, selected grouping service will feed back to this terminal to the identifier packet server identification of itself (PDS ID);
Step 3): in the follow-up link of described terminal and article one link flow processs such as switching/dormancy subsequently, terminal will be carried described grouping service identification information;
Step 4): described packet control unit will carry out routing according to the grouping service sign that described terminal provides.
Described wireless communication data network comprises a plurality of packet control units and a plurality of grouping service, all packet control units and all grouping services are realized the IP intercommunication, any packet control unit in the network any grouping service in can access domain, any grouping service in the territory can provide service by any packet control unit in the territory.
Described portable terminal initiates to set up article one link by dial-up program, inserts sign by the terminal fan-in network, receives that the packet control unit of dialing information carries out routing by this network access Identifier, selected corresponding grouping service.
In the follow-up link of described portable terminal and article one link switching/dormancy flow processs such as (comprising dormancy maintenance/dormancy awakening) subsequently, described packet control unit carries out routing according to described grouping service identification information, the follow-up link that guarantees described terminal terminates in same grouping service, does not change the grouping service that service is provided to described terminal when guaranteeing switching and dormancy awakening.
Another aspect of the present invention, the network access Identifier that in packet control unit, defines and the grouping service sign table of comparisons, different I SP is deployed in the different grouping services, an ISP also can provide service by a plurality of grouping services, the routing mechanism of packet control unit is assigned to the different grouping server to different terminals, has just realized load balancing and backup.
By method of the present invention, when portable terminal carried out the single-link data communication, after article one link establishment, the grouping service that described terminal provides service was not changed in follow-up switching/dormancy; When portable terminal carried out the multilink data communication, the switching of follow-up link and article one link and dormancy all were specified on the same grouping service of article one link.Thereby avoided the multilink of a terminal to terminate in the different grouping server, avoided striding the switching of grouping service, reduced the complexity of network.
Description of drawings
The reader will be understood that the various remarkable advantages that above-mentioned purpose of the present invention and the present invention are compared with prior art had having read with reference to the accompanying drawings after hereinafter specific description of embodiments of the present invention.
Fig. 1 Personal Handyphone System packet network topology.
Fig. 2 Personal Handyphone System packet control unit routing logic.
Fig. 3 strides the packet control unit multilink and sets up flow process.
Fig. 4 terminal links switching flow.
Embodiment
In a Personal Handyphone System packet network domain (PHS Packet Domain), require all packet control units and all grouping services to realize the IP intercommunication, any packet control unit in the territory any grouping service in can access domain, any grouping service the territory in can provide the service-user use by any packet control unit in the territory.
The user uses portable terminal to use the PHS data network service, need move dial-up program earlier on terminal, fills in parameters such as access code, the user name and password, and wherein the user name and password is used for subscriber identity authentication.The quantity that comprises Connection Network ID and link in the access code wishes to obtain service by 163 these ISP as ' 163##61 ' ' 163 ' expression user wherein, and single-link is adopted in ' 61 ' expression, and ' ## ' is separator; And ' 263##64 ' ' 263 ' expression user wherein wishes to obtain service by 263 these ISP, and four links are adopted in ' 64 ' expression.
During subscriber dialing, after filling in access code, Connection Network ID part wherein will be copied to PPMP (Personal Handyphone System grouping management agreement, the respective field of BIND message PHS Packet ManagementProtocol) (BIND is the capitalization of English word bind, and this message is used for initiating to set up requests such as link, link switchover, link dormancy).
When the single-link user brings into use network, will comprise Connection Network ID location and empty PDSID field in its PPMP BIND message.After packet control unit is received this message, will carry out routing according to Connection Network ID.The grouping service of choosing is after the PPMP BIND message that receives the user, the user is carried out the air interface authentication, after the success, (RSP is the abbreviation of word response to this grouping service with PPMP+RSP message, + RSP represents to receive request,-RSP represents the refusal request) to reply, this moment, this grouping service copied to the sign of self in the PDS id field of PPMP+RSP message.After the user receives PPMP+RSP message, to preserve this PDS ID, the user is switching or during dormancy subsequently, in the PPMP BIND message that network sends, will carry this PDS ID, packet control unit will carry out routing according to PDS ID this moment, guarantee that original grouping service is selected, the user remains on same grouping service and obtains service.
When the user uses multilink, when the user brings into use network, will comprise Connection Network id field and empty PDS id field in the PPMP BIND message of article one link of initiation request at first.After packet control unit is received this message, will carry out routing according to this Connection NetworkID.The grouping service of choosing carries out device authentication to the user after the PPMP BIND message that receives the user, the success back uses PPMP+RSP message to reply, and comprises the sign PDS ID of grouping service self in the PPMP+RSP message.After the user receives PPMP+RSP message, to preserve this PDS id information, when other links of user are initiated request, in the PPMP BIND message that network sends, will comprise this PDS ID, packet control unit will carry out routing according to PDS ID this moment, guarantee that same grouping service is selected, user's a plurality of follow-up link is terminated same grouping service.
As seen, the user can initiate single-link data communication and multilink data communication by portable terminal, and when carrying out the single-link data communication, after article one link establishment, the grouping service that described terminal provides service is not changed in follow-up switching/dormancy; When portable terminal carried out the multilink data communication, the switching of follow-up link and article one link and dormancy all were specified on the same grouping service of article one link.
Packet control unit is handled PPMP BIND message and is carried out routing in the link establishment process, after routing was finished, transparent transmission all PPMP message did not subsequently deal with.
The inner concrete routing logic of packet control unit is as follows:
1. check the PDS id field in the PPMP message earlier,, then carry out routing, search this PDS ID in the PDS ID tabulation that in packet control unit, defines according to PDS ID if be not empty:
If not this PDS ID definition in the PDS ID tabulation in the-packet control unit, then routing failure, refusal connects the request of foundation;
If comprise this PDS ID definition in-the packet control unit in the PDS ID tabulation, but this grouping service current state undesired (as: being connected disconnection) with the IP of packet control unit, then routing failure, refusal connects the request of foundation;
If comprise this PDS ID definition in-the packet control unit in the PDS ID tabulation, and this grouping service current state is normal, then this grouping service is selected, the routing success.
2. if PDS ID is empty, then packet control unit carries out routing according to Connection Network ID:
If not this ConnectionNetwork ID definition in the table of comparisons of ISP and PDS ID in-the packet control unit, then routing failure, refusal connects the request of foundation;
If comprise this ConnectionNetwork ID definition in-the packet control unit in the table of comparisons of ISP and PDS ID, but pairing all grouping services are all undesired, then routing failure, refusal connects the request of foundation;
If comprise this ConnectionNetwork ID definition in-the packet control unit in the table of comparisons of ISP and PDS ID, and pairing grouping service state is normal, then selects the highest available grouping service of priority, the routing success;
-according to the routing that Connection Network ID finishes, when packet control unit was failed at the bearer path that is established to selected grouping service (Tunnel), next available grouping service was chosen in routing again.
By the flow process of two base station/two control units (packet control unit-1 and packet control unit-2) grouping service-1 that terminates, as shown in Figure 3, correlated process is as follows respectively for two links of a terminal use:
1. the PDS id field is empty in the PPMP BIND message of article one link, but comprises Connection Network id information;
2. packet control unit carries out routing according to Connection Network ID, and grouping service-1 is selected;
3. the feedback message PPMP+RSP message of grouping service-1 comprises the sign PDSID of itself;
4. after the terminal use receives PPMP+RSP message, obtain and preserved the sign PDS ID of this grouping service;
5. the PPMP BIND message sent of terminal use's second link will comprise PDS ID;
6. will to carry out routing grouping service-1 according to PDS ID selected for packet control unit-2.
The switching flow of a link between two different grouping control units of a terminal, as shown in Figure 4, correlated process is as follows:
1. terminal is in the initialization procedure of article one link, and having obtained currently provides the PDS ID of service to it;
2. when the terminal use switches, the PPMP BIND message that handoff links is sent will comprise this PDS ID;
3. packet control unit will carry out routing according to PDS ID, the former grouping service that terminates of the link after guarantee switching.
After the user finishes this data, services, when initiating new data communication service once more, re-enter network access Identifier and begin new routing, with last time routing was irrelevant.
Claims (10)
1. wireless communication data network route selecting method, in the wireless communication data network of forming by portable terminal, base station, grouping service and packet control unit, realize routing, it is characterized in that described method comprises the steps: successively by packet control unit
Step 1): initially the setting up in the process of article one link of portable terminal, packet control unit carries out routing according to network access Identifier;
Step 2): after article one link establishment, selected grouping service will feed back to this terminal to the identifier packet server identification of itself;
Step 3): in the follow-up link of described terminal and article one link flow processs such as switching/dormancy subsequently, terminal will be carried described grouping service identification information;
Step 4): described packet control unit will carry out routing according to the grouping service sign that described terminal provides.
2. a kind of wireless communication data network route selecting method as claimed in claim 1 when it is characterized in that described portable terminal is set up article one link, need be imported access code from terminal, and described access code comprises network access Identifier.
3. a kind of wireless communication data network route selecting method as claimed in claim 1 is characterized in that described packet control unit does not change the grouping service that service is provided to described terminal when described terminal switching and dormancy awakening.
4. a kind of wireless communication data network route selecting method as claimed in claim 1 is characterized in that described packet control unit terminates in same grouping service with the follow-up link of the multilink of described terminal.
5. a kind of wireless communication data network route selecting method as claimed in claim 1, it is characterized in that described network access Identifier and grouping service the sign transmit by the grouping management protocol message.
6. a kind of wireless communication data network route selecting method as claimed in claim 1, it is characterized in that in described packet control unit, having defined network access Identifier and the grouping service sign table of comparisons, heterogeneous networks is served ISP be deployed in the different grouping services.
7. a kind of wireless communication data network route selecting method as claimed in claim 7 is characterized in that an ISP also can be shared by a plurality of grouping services.
8. a kind of wireless communication data network route selecting method as claimed in claim 7 is characterized in that described packet control unit is assigned to the different grouping server to different terminals, has just realized load balancing and backup.
9. a kind of wireless communication data network route selecting method as claimed in claim 1 is characterized in that described wireless communication networks is meant the Personal Handyphone System packet network.
10. a wireless data communication system comprises portable terminal, base station, packet control unit and packeting controller, it is characterized in that described packeting controller can by as among the claim 1-9 as described in each method carry out routing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100479618A CN101232706A (en) | 2007-11-08 | 2007-11-08 | Route selection method of wireless communication data network and system thereof |
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| CNA2007100479618A CN101232706A (en) | 2007-11-08 | 2007-11-08 | Route selection method of wireless communication data network and system thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269316A (en) * | 2013-05-28 | 2013-08-28 | 北京星网锐捷网络技术有限公司 | Method and device for processing routing and network devices |
| CN104767603A (en) * | 2014-01-02 | 2015-07-08 | 北京思博途信息技术有限公司 | Method for providing network service, server and user terminal |
| CN111314272A (en) * | 2018-12-12 | 2020-06-19 | 大唐移动通信设备有限公司 | Task processing method and device |
| CN113766613A (en) * | 2020-06-02 | 2021-12-07 | 苹果公司 | Multi-link sleep mode for WLAN |
-
2007
- 2007-11-08 CN CNA2007100479618A patent/CN101232706A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269316A (en) * | 2013-05-28 | 2013-08-28 | 北京星网锐捷网络技术有限公司 | Method and device for processing routing and network devices |
| CN103269316B (en) * | 2013-05-28 | 2016-06-29 | 北京星网锐捷网络技术有限公司 | The processing method of routing and device and the network equipment |
| CN104767603A (en) * | 2014-01-02 | 2015-07-08 | 北京思博途信息技术有限公司 | Method for providing network service, server and user terminal |
| CN111314272A (en) * | 2018-12-12 | 2020-06-19 | 大唐移动通信设备有限公司 | Task processing method and device |
| CN113766613A (en) * | 2020-06-02 | 2021-12-07 | 苹果公司 | Multi-link sleep mode for WLAN |
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