Different-network switching method and terminal based on AP (application processor) in Android system

Abstract

The invention discloses a different-network switching method and terminal based on an AP (application processor) in an Android system. When a mobile broadband network is switched to a wireless broadband network and an SIP (session initiation protocol) session is established, a PPP (point-to-point protocol) unit initiates a PPP dial and processes a PPP message, a switching control unit intercepts a PPP data message transmitted by the mobile broadband network, and the data message undergoes a tunnel encapsulation and then is transmitted to the wireless broadband network. When the wireless broadband network is switched to the mobile broadband network, an RIL (radio interface layer) interface redirects a link establishment request to the PPP unit, i.e., a whole switching process uses the PPP unit in the AP, and the switching control unit intercepts PPP data originally transmitted by the wireless broadband network and sends the PPP data to the mobile broadband network. According to the invention, the continuous operation connection is guaranteed without the PPP renegotiation authentication required in different-network switching and without the redistribution of IP addresses of the mobile terminal device.

Description

technical field [0001] The present invention relates to the field of mobile terminal equipment (mobile phone, tablet computer, etc.), in particular to a method and a terminal for realizing seamless switching between a mobile broadband network and a wireless broadband network based on an AP (Application Processor, application processor) in an Android system. Background technique [0002] The integration and synergy of mobile broadband (CDMA, WCDMA, HSPA, LTE, etc.) and wireless broadband (WiFi) has become a hot spot in the industry. [0003] figure 1 Shown is a prior art architecture diagram of WiFi and CDMA network fusion networking. Among them, PDSN, AN / AAA, HLR / AuC, DO RNC, BSC / PCF, and BTS are standard network elements of CDMA network, AP, AC / BAS are standard network elements of WiFi network, and WAG is a wireless LAN access gateway for unified authentication , the above-mentioned network elements are network elements of the live network. [0004] The integration of mo...

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Problems solved by technology

[0007] (2) Cross-system switching is realized, but the switching process controlled by the mobile terminal device is not involved, that is, the software and hardware architecture of the mobile terminal device side is not improved

[0009] For the Android system, at this stage, users can only use the unified authentication communication dialing function of mobile broadband + wireless broadband in the mobile terminal device of the Android system, and choose two different networks of mobile broadband or wireless broadband for access. The switch between mobile broadband and wireless broadband network access will cause the user's business connection to be interrupted, requiring re-selection of the network, re-initiation of service access authentication, and allocation of a new IP address, and automatic seamless switching cannot be achieved

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