Single Chip Mobile Device Multi-Network Resource Management
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Solution Overview
Problem
Single chip mobile wireless devices are limited in their ability to simultaneously connect to multiple wireless networks, such as LTE and CDMA2000 1×, which restricts their capability to maintain circuit switched voice connections and efficiently manage radio resources, leading to unnecessary signaling loads and resource wastage.
Innovation Solution
A method for a single chip mobile wireless device to transmit a radio resource suspension trigger to one wireless network, allowing it to tune to another network for paging messages while maintaining an established radio resource control connection, thereby suspending and resuming radio resource allocations as needed, optimizing resource usage and minimizing signaling loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single chip mobile wireless device connects to one wireless network at a time, then device complexity is reduced, but the ability to simultaneously maintain connections to multiple wireless networks deteriorates
Solution Approach 1:
The patent implements dynamic time-sharing of the receiver between two wireless networks. The device alternates between tuning to the first network (LTE) and the second network (CDMA2000 1×) based on operational requirements. This dynamic switching allows a single receiver to effectively monitor both networks without requiring simultaneous hardware support, resolving the contradiction between device simplicity and multi-network capability.
Solution Approach 2:
The device employs periodic tuning to the second wireless network during designated paging intervals. Instead of continuously monitoring both networks, the receiver periodically switches to check for paging messages on the CDMA2000 1× network while maintaining connection on the LTE network. This periodic action enables multi-network support with minimal impact on primary network operations.
2Adaptability or versatility
If the device tunes to another network to receive paging messages, then multi-network support is improved, but radio resource allocation and connection stability on the first network deteriorate
Solution Approach 1:
Before tuning the receiver to the second network for paging messages, the device transmits a radio resource suspension trigger to the first network. This preliminary action informs the LTE network that the device will be temporarily unavailable, allowing the network to suspend radio resource allocations and maintain connection stability without interruption or data loss during the tuning period.
Solution Approach 2:
The device establishes a feedback mechanism by transmitting signaling messages to the first network to indicate tuning status. When the receiver is tuned to the second network, the device sends suspension triggers; when returned to the first network, it sends resumption indicators. This feedback loop allows the network to dynamically adjust resource allocation based on actual device availability, maintaining reliable connections across network switches.
3Reliability
If the device continuously monitors both networks, then network coverage and reliability are improved, but power consumption increases
Solution Approach 1:
The device monitors the second wireless network (CDMA2000 1×) only during periodic paging intervals rather than continuously. The receiver switches to the second network at predetermined times to check for paging messages, then returns to the first network (LTE) for normal operations. This periodic monitoring approach ensures network coverage reliability while minimizing power consumption by keeping the receiver inactive on the second network for most of the time.
Solution Approach 2:
The patent extracts the multi-network monitoring function from continuous operation and implements it only when necessary. Instead of continuously monitoring both networks, the device extracts and performs monitoring actions only during specific paging intervals on the second network, reducing overall power consumption while maintaining the ability to receive important network notifications.
4Adaptability or versatility
If the device uses separate signal processing chips for different protocols, then simultaneous connection capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent makes the single signal processing chip universal by enabling it to support multiple wireless communication protocols (LTE and CDMA2000 1×) sequentially. The chip can be configured to operate with different protocols at different times, eliminating the need for separate dedicated chips for each protocol. This multi-functionality approach achieves simultaneous connection capability through time-division while reducing device complexity and cost.
Solution Approach 2:
The patent merges the functionality of separate signal processing chips into a single chip that can handle multiple protocols. Instead of having independent LTE and CDMA2000 1× processing chains, the device combines these capabilities into one chip that time-shares between protocols, reducing hardware complexity while maintaining the ability to connect to both networks.
Data Source
AI summary
A single chip mobile wireless device capable of receiving and transmitting over one wireless network at a time maintains registration on two wireless communication networks that each use different communication protocols in parallel. Periodically, the mobile wireless device tunes one or more receivers from a first wireless network to a second wireless network in order to listen for paging messages addressed to the mobile wireless device from the second wireless network. The first wireless network suspends allocation of radio resources to the mobile wireless device based on receipt of a suspension message from the mobile wireless device, or based on knowledge of a paging cycle for mobile wireless device in the second wireless network, or based on detection of an out of synchronization condition with the mobile wireless device.