Dual-Standby Terminal Network Selection and Power Management
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Solution Overview
Problem
Existing dual-mode terminals experience service interruptions and increased power consumption due to network reselection, particularly when switching between 2G and 3G networks, leading to poor user experience and inefficient energy use.
Innovation Solution
A dual-standby terminal with separate modules for circuit-switched (CS) and packet-switched (PS) domains, where the CS domain camps on a network with better signal coverage and the PS domain on a network with higher data transmission rate, and the PS domain module is closed when no service exists within a set duration to conserve energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dual-mode terminal reselects network to improve service coverage, then service availability is improved, but service interruption occurs during reselection
Solution Approach 1:
The terminal is divided into separate CS domain module and PS domain module, each capable of independently camping on different networks. This segmentation allows voice services to be handled by one domain while data services by another, eliminating the need for network reselection and thus avoiding service interruption.
Solution Approach 2:
The patent introduces a network selection module that acts as an intermediary to manage the camping of different domains on different networks. This module coordinates the CS and PS domains to camp on appropriate networks based on service requirements, preventing service disruption during network selection.
2Reliability
If a terminal maintains dual-network connections to ensure service continuity, then service availability is improved, but power consumption increases
Solution Approach 1:
The terminal dynamically manages network connections by closing the PS domain module when no data service is detected for a predetermined time period. This dynamic adjustment maintains service continuity when needed while reducing power consumption during idle periods.
Solution Approach 2:
The system changes the operational state of the PS domain module based on service detection. When no data service is detected within a threshold time, the module transitions from active to closed state, thereby changing power consumption parameters while maintaining service availability when required.
3Device complexity
If a terminal camps on a single network for simplicity, then device complexity is reduced, but service quality deteriorates due to network coverage limitations
Solution Approach 1:
The terminal segments network management into separate CS domain and PS domain modules, each independently camping on networks optimized for their respective services. This segmentation maintains relatively simple device architecture while improving service quality by leveraging the strengths of different networks.
Data Source
AI summary
Embodiments provide a method for selecting a network by a terminal and a dual-standby terminal. The method includes: enabling, by a first network processing module, a circuit switched (CS) domain to preferably camp on a first network, and executing a CS domain service; enabling, by a second network processing module, a packet switched (PS) domain to preferably camp on a second network, and executing a PS domain service; wherein, signal quality of the first network is better than that of the second network, and a data transmission rate of the second network is higher than that of the first network; and closing the second network processing module when no PS domain service exists in a set duration. These embodiments help improve the service quality and reduce power consumption of the terminal.