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Dual-transmission mode switching method and universal access network controller

A dual-transmission mode, universal access network technology, applied in the field of dual-transmission mode switching methods and universal access network controllers, can solve problems such as damage to business service quality, switching failure, and failure to provide execution procedures and control strategies, to achieve The effect of improving user mobility and service experience

Active Publication Date: 2008-08-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] During the creation process of the present invention, the inventor found that the prior art has at least the following problems: when the terminal performs CS and PS services in GERAN or UTRAN at the same time, that is, when it is in the dual transfer mode (DTM: Dual Transfer Mode) state, if it needs to perform For the handover to GAN, the corresponding execution process and control strategy have not yet been provided. The possible results are: handover failure; or only CS handover, PS service is suspended; or only PS handover is performed, CS service is suspended
No matter what happens, it will damage the service quality (QoS: Quality of Service) of the business and reduce the user's business experience.

Method used

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  • Dual-transmission mode switching method and universal access network controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1. A DTM handover method from other access networks (RAT, Radio Access Technology) to GAN. Other access networks may be GERAN or UTRAN. In this embodiment, it is assumed that other access networks are GERAN, and the method flow Such as figure 1 shown, including:

[0026] A1. The terminal sends handover information to the source wireless access network, which is BSS in the GERAN / UTRAN network. The handover information includes the designation of the target GAN cell to be handed over to;

[0027] When a mobile station supporting GAN is in a GERAN cell, it will continue to try to discover the GAN network until it finds the GAN service, and then executes the registration process to the GANC. After successfully registering on a GANC, for GAN-preferred terminals, the switch from GERAN to GAN is usually triggered by the discovery of a GAN network; for GERAN / UTRAN-preferred terminals (GERAN / UTRAN-preferred ) terminal, the handover may be triggered because the chann...

Embodiment 2

[0062] Embodiment 2. A DTM switching method from other access networks to GAN, such as image 3 As shown, the process of this embodiment is basically the same as that of Embodiment 1. The difference is that in this embodiment, the target GANC will start forwarding service data as soon as possible after receiving the handover preparation request information. The process includes:

[0063] B1. The terminal sends handover information to the source BSS, which specifies the target GAN cell to be handed over to;

[0064] B2. The source BSS judges that the terminal that initiates the handover is in the DTM state, prepares to perform DTM handover, and sends the CS handover preparation request information and the PS handover preparation request information with the DTM handover identifier to the target GANC through MSC and SGSN;

[0065] B3. After the target GANC receives the handover preparation request information with the DTM handover identifier sent by the MSC or SGSN, it establish...

Embodiment 3

[0073] Embodiment 3. A DTM switching method from other access networks to GAN, such as Figure 4 As shown, the flow of this embodiment is basically the same as that of Embodiment 1. The difference is that in this embodiment, in addition to executing the handover process, the terminal also monitors whether the handover process times out and whether it needs to be continued. The process includes:

[0074] C1. The terminal sends handover information to the source BSS, and the message includes the designation of the target GAN cell to be handed over to;

[0075] C2. After the terminal triggers the handover, the first timer is used to monitor the handover process. The steps include:

[0076] C21. The terminal starts the first timer;

[0077] In actual implementation, the start of the first timer can be performed before or after the handover information is sent, or at the same time;

[0078] C22. In the subsequent handover execution process, the terminal monitors whether the first...

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Abstract

The invention discloses a method for double transmission mode switching between general access network and other access network, establishing user data link in both circuit switched domain and packet switched domain for terminals by general access controller, and processing switching operation between circuit switched domain and packet switched domain related to the same terminal. The invention also provides general access network controller suitable for the mentioned method. The invention makes mobile terminal which can carry out service in both circuit switched domain and packet switched domain freely surf the wireless core network with different access technology, improves user's mobility and service feeling.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a dual transmission mode switching method and a universal access network controller. Background technique [0002] In the mobile communication network, the access network acts as a bridge between the terminal user and the core switching network, and its communication capability directly affects the user's experience of mobile services. With the continuous development of short-distance wireless communication technology, it has attracted more and more attention due to its advantages of high access bandwidth and low communication cost. The way of providing wireless access based on short-distance wireless communication technology in the license-free frequency band is rapidly popularizing, and it coexists with traditional wireless access networks in the local area or even in the metropolitan area. Therefore, traditional radio access networks, such as Universal Mobile Tel...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04Q7/32H04L12/56H04W36/08
CPCH04W36/0033H04W36/0022
Inventor 翁武林
Owner HUAWEI TECH CO LTD
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