Dynamic UE Capability Transmission for Multi-Network Compatibility
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently handling multiple cellular radio operations, particularly in transmitting different capabilities to various networks during carrier aggregation, dual connectivity, and multiple input multiple output (MIMO) operations, which affects the performance and compatibility of user equipment (UE) across different networks.
Innovation Solution
A communication device and method that includes a processing circuit configured to transmit varying user equipment (UE) capabilities, such as carrier aggregation (CA), dual connectivity (DC), and MIMO capabilities, to different networks, allowing the device to adapt and indicate different capabilities when attaching to multiple networks, thereby optimizing operations based on the network's requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the communication device transmits the same UE capability to all networks, then the device structure is simple, but the compatibility and performance across different networks deteriorate
Solution Approach 1:
The patent implements dynamic capability transmission by determining whether to send full or reduced UE capability information based on the current network attachment state. When attached to multiple networks, the device dynamically switches to transmitting reduced capability information, while when attached to a single network, it transmits full capability information. This dynamic adaptation resolves the contradiction between network compatibility and device complexity.
Solution Approach 2:
The patent changes the parameter of UE capability information based on network attachment conditions. The capability information parameter is adjusted from full capability set to reduced capability set depending on whether the device is attached to one or multiple networks, thereby optimizing the balance between compatibility and complexity.
2Adaptability or versatility
If the communication device transmits full UE capability information to all networks, then the network compatibility is improved, but the signaling overhead and network processing burden increase
Solution Approach 1:
The patent applies partial action by transmitting only the necessary subset of UE capability information to networks when attached in multiple-network scenarios. Instead of sending complete capability information to all networks, the device sends reduced capability information that is sufficient for current operation, thereby reducing signaling overhead while maintaining adequate compatibility.
3Adaptability or versatility
If the communication device supports carrier aggregation and dual connectivity simultaneously, then the radio operation capability is enhanced, but the device complexity and resource management difficulty increase
Solution Approach 1:
The patent segments the UE capability information into different levels (full capability and reduced capability) based on the operational mode. When carrier aggregation and dual connectivity are simultaneously supported, the device segments the capability information transmission, sending reduced capability information to avoid the complexity of managing full capability information across multiple networks while maintaining the enhanced radio operation capability.
Data Source
AI summary
A communication device for handling multiple cellular radio operations in a wireless communication system comprises a storage device for storing instructions and a processing circuit coupled to the storage device. The processing circuit is configured to execute the instructions stored in the storage device. The instructions comprise transmitting a first user equipment (UE) capability to a first network, when the communication device attaches to the first network; and transmitting a second UE capability to the first network, when the communication device attaches to the first network and a second network, wherein the second UE capability is different from the first UE capability.