Communication method and system for dual-mode single-standby terminal

Abstract

The present application discloses a communication method and system for a dual-mode single-standby terminal, wherein the method includes: pre-configuring a broadband SIM card and a narrowband SIM card with the same user number in the dual-mode single-standby terminal of the broadband and narrowband converged trunking communication system; When the first core network receives the call request of the dual-mode single-standby terminal, it is judged whether the corresponding called number is registered on the network side of the same bandwidth type as the first core network, and if so, according to the first core network The network standard of the same bandwidth type executes the corresponding single call establishment process; otherwise, the first core network sends the call request message to the second core network, triggering the second core network to execute the broadband and narrowband single call establishment process, wherein, when the first core network When the first core network is a broadband core network, the second core network is a narrowband core network; when the first core network is a narrowband core network, the second core network is a broadband core network. By adopting the invention, the communication complexity of the dual-mode single-standby terminal can be effectively reduced, and the implementation is easy.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a communication method and system for a dual-mode single-standby terminal in a broadband and narrowband fusion cluster communication system. Background technique [0002] Broadband and narrowband integrated trunking communication system is a hot topic in the domestic communication industry and its application field recently. The system integrates the narrowband trunking communication system represented by TeTRA and PDT and the B-TrunC broadband trunking communication system, supports unified signing, unified scheduling, and unified application. Relying on the interworking gateway, the service integration capability is improved and the call service delay is reduced. [0003] The dual-mode single-standby terminal means that the terminal can insert a broadband SIM card and a narrowband SIM card at the same time, and decide which SIM card to use for attachment and standby according...

AI Technical Summary

Problems solved by technology

[0006] It can be seen that the existing dual-mode single-standby terminal communication scheme has the problem of complicated user operations

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