Base Station Capability Configuration for Band-Specific MIMO
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Solution Overview
Problem
Communication devices may not support the same baseband capabilities across all frequency bands, leading to communication failures when transitioning between different frequency bands.
Innovation Solution
A method and system where a base station configures communication devices to use specific baseband capabilities associated with each frequency band, allowing for seamless communication by transmitting and receiving signals using the appropriate Multiple Input Multiple Output (MIMO) layers, modulation orders, and Subcarrier Spacing (SCS) for each band, and managing carrier aggregation and dual connectivity based on supported capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a communication device uses a single baseband capability configuration across all frequency bands, then the device complexity is reduced, but communication reliability deteriorates due to incompatibility with certain frequency bands
Solution Approach 1:
The patent segments the baseband capability configuration into multiple distinct configurations, each optimized for specific frequency bands. The network device receives multiple baseband capability configurations from the communication device, where each configuration corresponds to different frequency band requirements. This segmentation allows the device to maintain lower overall complexity while ensuring reliable communication across different bands by selecting the appropriate configuration for each band.
Solution Approach 2:
The patent implements dynamic selection of baseband capability configurations based on the active frequency band. The network device determines which baseband capability configuration to use based on the frequency band in which the communication device is currently operating. This dynamic adaptation ensures that the device uses the most appropriate configuration for each band, maintaining reliability without requiring all configurations to be active simultaneously, thus managing complexity.
2Reliability
If the network device configures multiple baseband capability configurations for different frequency bands, then communication reliability is improved, but the signaling overhead and processing complexity increase
Solution Approach 1:
The patent employs preliminary action by having the communication device proactively report its multiple baseband capability configurations to the network device before actual communication begins. The network device receives and stores these configurations in advance, so when the device transitions between frequency bands, the appropriate configuration is already available and can be quickly activated without complex real-time processing. This preliminary setup reduces the processing complexity during band transitions while maintaining high reliability.
3Productivity
If the communication device transitions between frequency bands without capability coordination, then the system capacity and mobility are improved, but communication failures occur due to capability mismatches
Solution Approach 1:
The patent implements feedback mechanisms where the communication device reports its baseband capability configurations to the network device, and the network device provides feedback by determining and indicating the appropriate configuration to use for each frequency band. This bidirectional feedback ensures that when the device transitions between frequency bands, both the device and network are aware of the capability requirements and current configuration status, preventing communication failures while maintaining system capacity and mobility.
Data Source
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AI summary
A first base station (BS) for handling communication device capabilities comprises at least one storage device storing instructions of receiving a first band combination (BC) and a second BC, from a communication device, a second BS or a core network; indicating the first BC as an allowed BC in an allowed BC information element (IE); transmitting a Secondary Node (SN) Addition Request message to a third BS, wherein the SN addition request message comprises the first BC and the second BC, and comprises the allowed BC IE; and receiving a SN Addition Request Acknowledge message for responding to the SN Addition Request message, from the third BS.