Isomerized network switch method, system, terminal and network

Abstract

The invention is related to the field of radio communication and discloses an isomeric network switching method, system, terminal and network. When conducting a switching of the isomeric network, the invention is able to avoid a reverse access competition between the terminals, thereby improving the success rate of network access and reducing the service interruption time caused by the switching. In the invention, when the isomeric network switching is conducted at the terminal, the first message of the terminal that is used to negotiate with the target network for establishing wireless service connections is sent to the target network via the source network. The target network reserves resources for the terminal according to the first message received and send back the message of the reserved resources to the terminal through the source network. The terminal establishes wireless service connections according to the reserved resources and accesses to the target network.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to heterogeneous network switching technology. Background technique [0002] With the rapid development and popularization of communication technologies, mobile phones and the data services they provide have increasingly changed people's lives and work. At the same time, in response to the needs of the market, operators have developed various communication technologies according to the different needs of users, forming a status quo where multiple communication technologies coexist. It is not uncommon to see multiple mobile cellular technologies co-existing in the same area, and the same cellular technology being operated by different operators. Users can perform roaming switching and network selection among various communication systems according to the differences in service types and service quality of different networks, such as figure 1 shown. [0003] Handover is unique...

AI Technical Summary

Problems solved by technology

[0053] It can be seen that based on the existing 802.21 standard, heterogeneous handover in 3GPP will cause a delay of 300 milliseconds only in reverse access and wireless resource allocation, and a delay of 300 milliseconds will interrupt many services

[0054] In addition, during the handover process, if the terminal does not provide detailed terminal capability information and service type information to the target network, it may be difficult for the target network to accurately configure appropriate resources for this connection, including power resources, physical modulation and demodulation Resources, time slot resources, bandwidth resources, code resources, QoS, etc.

[0055] At the same time, some resources configured on the network side need to be notified to the terminal in time, otherwise these reserved resources are meaningless

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