Dual Network Mobile Device for Voice Data Services
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Solution Overview
Problem
Conventional LTE cellular networks are limited in supporting both data and voice services simultaneously, requiring users to carry separate devices for voice calls and often failing to notify users of incoming calls while using data services, due to the need to switch between different frequency bands and networks.
Innovation Solution
A mobile communication device is designed to receive notifications of incoming voice calls over a first wireless network while primarily using a second network for data services, allowing seamless switching to the voice network for call acceptance without interrupting data communications, using dual or single SIM configurations with roaming capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single SIM is used to support both data and voice services on conventional LTE networks, then device simplicity is maintained, but the network cannot simultaneously support both data and voice services, requiring users to carry separate devices
Solution Approach 1:
The patent enables a single mobile device with a single SIM to perform multiple functions by supporting both data services on a first LTE network and voice services on a second LTE network simultaneously. The device can maintain data connections on one network while monitoring and accepting voice calls on another network, eliminating the need for separate devices for different service types.
2Loss of information
If the mobile device monitors a second network for incoming voice calls while using data services on a first network, then incoming call notification is achieved, but network switching complexity increases
Solution Approach 1:
The mobile device performs preliminary actions by maintaining a data bearer connection on the first LTE network and simultaneously monitoring the second LTE network for incoming voice calls before actually needing to switch networks. The device proactively establishes the capability to receive notifications on both networks, so when a voice call arrives, the switch is already prepared and can execute quickly without complex real-time decision-making.
3Adaptability or versatility
If the device switches between frequency bands and networks to support both data and voice services, then service versatility is improved, but service continuity and notification reliability deteriorate
Solution Approach 1:
The patent segments the service support by dedicating different networks for different service types: the first LTE network (e.g., CBRS band) is used for data services while the second LTE network (e.g., macro band) is used for voice services. This segmentation allows each network to be optimized for its specific service type while the device maintains simultaneous connections to both, ensuring service continuity and reliable notifications without the need for frequent switching.
Data Source
AI summary
According to one configuration, a mobile communication device receives first communications over a first wireless communication link from a first wireless network (which potentially supports data only communications). The first communications received over the first wireless network can include a message indicating a pending incoming call available over a second wireless network (which potentially supports voice/call communications). In response to receiving the message indicating the pending incoming call, the mobile communication device is operated to receive second communications (such as a paging signal) from over the second wireless network. For example, the mobile communication device listens for a paging signal from the second wireless network further indicating the pending incoming call. If desired, an operator of the mobile communication device can accept the incoming call via a second wireless communication link to the second wireless network.