Dual-Card Wireless Device Transceiver Coordination
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Solution Overview
Problem
Dual-card or multiple-card cellular phones face challenges in maintaining high data rates for packet-switched data services when one wireless communication module is occupied, as the other module lacks control over the shared transceiver, leading to interruptions and reduced data throughput.
Innovation Solution
A wireless communication device and method that references cell information for a first subscriber identity card to maintain mobility for a second card, and disables inter-RAT measurements to enhance data rate by coordinating operations between multiple wireless communication modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single transceiver is shared between multiple wireless communication modules, then device complexity is reduced, but data rate for packet-switched services deteriorates due to interruptions from mobility measurements
Solution Approach 1:
The system performs measurements for the second subscriber identity card in advance during idle periods or downtime, storing the measurement results. When the first wireless communication module needs the transceiver for packet-switched data service, the pre-performed measurements allow the second card to maintain mobility information without requiring real-time transceiver access, thus preventing interruptions to the data service.
2Ease of operation
If multiple wireless communication modules operate independently with a single transceiver, then ease of operation is improved, but reliability deteriorates due to lack of coordination causing service interruptions
Solution Approach 1:
The system implements a coordination mechanism where the controller manages transceiver allocation between multiple wireless communication modules based on their operational states. When the first module is actively performing packet-switched data service, the controller prevents the second module from initiating measurements that would require transceiver usage. This feedback-based coordination ensures service continuity while maintaining operational flexibility.
Solution Approach 2:
A controller acts as an intermediary between multiple independent wireless communication modules sharing a single transceiver. The controller coordinates their operations, granting transceiver access to the first module during active data service while managing the second module's measurement needs through alternative means (such as using stored measurement data or scheduling measurements during idle periods), thus ensuring reliable service delivery.
3Adaptability or versatility
If a second subscriber identity card performs scheduled measurements to maintain mobility, then adaptability is improved, but data throughput deteriorates due to transceiver occupation
Solution Approach 1:
The system performs and stores measurement results for the second subscriber identity card in advance, during periods when the transceiver is not needed for high-priority packet-switched data services. This preliminary action allows the second card to maintain its mobility information without requiring real-time transceiver access during active data transmission, thus preserving data throughput while maintaining adaptability.
Data Source
AI summary
A wireless communication device for enhancing a data rate for a packet-switched (PS) data service is provided. The device comprises a processor configured to reference cell information corresponding to a first subscriber identity card to maintain mobility for a second subscriber identity card by using the referenced cell information when performing the PS data service with a first service network for the first subscriber identity card.