DSDA Terminal Band Allocation for Faster Data Transmission
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Solution Overview
Problem
The fixed division of carrier aggregation capabilities for dual SIM cards in a DSDA mode restricts the available bands and data transmission speed of terminal devices, limiting user experience.
Innovation Solution
A terminal device coordinates carrier aggregation capabilities by reporting serving cell information or band combination lists to an access network device using a secondary user identity, allowing dynamic adjustment of available bands for both SIM cards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed division is used to specify bands for each SIM card, then device complexity is reduced, but data transmission speed and adaptability are restricted
Solution Approach 1:
The patent implements dynamic band allocation where the network device adjusts the available band list for each SIM card based on real-time carrier aggregation status. When one SIM card is in carrier aggregation, the network device dynamically modifies the band list for the other SIM card, enabling flexible adaptation without fixed pre-configuration.
Solution Approach 2:
The patent changes the parameter of band availability by providing different band lists to different SIM cards based on their current carrier aggregation state. The network device modifies system parameters (available bands) dynamically rather than using static configuration, allowing optimal band selection for each SIM card's current operational state.
2Ease of operation
If fixed division is used to specify bands for each SIM card, then ease of operation is improved, but adaptability of carrier aggregation capabilities is worsened
Solution Approach 1:
The system transitions from static band configuration to dynamic band allocation. The network device automatically adjusts the available band list for each SIM card based on real-time carrier aggregation status, eliminating the need for manual fixed configuration while providing adaptive carrier aggregation support.
Solution Approach 2:
The network device performs self-service by automatically determining and providing appropriate band lists to SIM cards based on their carrier aggregation state. This eliminates manual configuration requirements while ensuring optimal band allocation adapts to changing operational conditions.
3Reliability
If one SIM card occupies certain bands, then those bands are unavailable for the other SIM card, but this restricts the available band of each SIM card and reduces data transmission speed
Solution Approach 1:
The patent implements dynamic band list provision where the network device adjusts the available bands for each SIM card based on real-time carrier aggregation status. When SIM card 1 is in carrier aggregation, the network device dynamically modifies the band list for SIM card 2, allowing flexible band sharing that maintains stability while enabling higher data transmission speeds.
Data Source
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AI summary
Embodiments of this application relate to the communication field, and provide a communication method and system, and a device, to increase a data transmission speed of a terminal device in a DSDA mode and improve user experience. The method specifically includes: A terminal device obtains first information or second information, where the terminal device supports a first user identity and a second user identity, the first information includes information about a serving cell of the first user identity, and the second information includes a band combination list or a band list supported by the second user identity; and the terminal device sends the first information or the second information to a first access network device by using the second user identity, where the first access network device is an access network device accessed by the terminal device by using the second user identity. This application is used to add a serving cell for the terminal device.