Preferred roaming list setting method, system thereof, terminal and server

Abstract

The invention discloses a preferred roaming list setting method in a CDMA (Code Division Multiple Addressing) system, a system thereof, a terminal and a server. The method comprises the following steps: downloading a preferred roaming list (PRL) to the terminal through a PRL multimedia message; extracting the PRL from the PRL multimedia message to carry out PRL setting of the terminal. According to the method and the system in the invention, the PRL is downloaded to the terminal by utilizing packet link in a multimedia message mode, the terminal sends PRL content to an intelligent card, the intelligent card carries out update on a PRL related file, and an update success rate of the PRL is effectively raised.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, and in particular to a method, system, terminal and server for setting a preferred roaming list (Preferred Roaming List, preferred roaming list). Background technique [0002] It is very common for mobile networks that mobile users roam between networks of different countries or different operators. With the increasing mobility of the global population and the increasing number of business contacts, different countries or different mobile operators need to sign roaming agreements so that their own mobile users can enjoy mobile services in as many regions of the world as possible, thereby attracting more Multiple users, increase enterprise operating income, and improve operators' own competitiveness. [0003] In the CDMA (Code Division Multiple Access, Code Division Multiple Access) system, in addition to saving the SID (System Identity, system identification) and frequency o...

AI Technical Summary

Problems solved by technology

[0007] In the prior art, the amount of data carried by ordinary short messages is very small. For example, a 9K PRL list needs more than 80 short messages. Influenced by factors such as delay, some short messages may be lost, the delay is too long, etc., which will lead to the failure of PRL content update. It is difficult to guarantee the success rate of PRL content update. The success rate of PRL update is relatively low. For large-capacity PRL list, the update success very low rate

The above problems restrict the development of international roaming services and seriously affect the user's international roaming experience

In addition, if the service channel is not removed before the short message is sent, sending dozens of short messages continuously will occupy the service channel for a certain period of time. At this time, the user cannot make voice calls, which will easily cause user complaints

[0008] Large-capacity PRL updates can also be completed through BIP (Bearer Independent Protocol, bearer independent protocol) connections, which can ensure the success rate of PRL list updates and do not affect the normal calls of users, but require major modifications to network equipment, terminals and smart cards , and the current BIP protocol chip is still in the research and development stage, and it will take a long time before the real commercial use, and users need to replace the terminal and smart card to use it, which will bring a lot of cost to users and operators

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