Uplink Grant Identification for System Information Requests
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Solution Overview
Problem
There is a need for an efficient method in next-generation mobile communication systems for terminals to request system information and report power headroom in wireless communication systems, particularly when multiple radio access technologies are used and supplementary uplink frequencies are configured, while also resolving decoding difficulties due to grant collisions.
Innovation Solution
A method involving a terminal initiating a random access procedure by transmitting a first message to a base station, receiving a timing advance command and uplink grant, and transmitting subsequent messages to complete the procedure, with the base station managing the process to determine if the request is for system information and handling potential collisions between configured and dynamic grants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a terminal uses random access procedure to request system information in next-generation mobile communication systems, then the system information request efficiency is improved, but decoding difficulties occur due to grant collisions between configured and dynamic grants
Solution Approach 1:
The patent segments the uplink grant resources into two distinct types: configured grants (pre-allocated periodic resources) and dynamic grants (allocated on-demand). By separating these grant types and assigning them different identification mechanisms, the patent enables the terminal to distinguish between them, thereby resolving the decoding collision issue while maintaining efficient system information request procedures
Solution Approach 2:
The patent introduces an intermediary identification mechanism (such as specific field indicators or message structures) that acts as a mediator between the terminal and base station to differentiate between configured and dynamic grants. This intermediary element allows the receiver to correctly interpret the grant type without ambiguity, solving the decoding reliability problem
2Adaptability or versatility
If multiple radio access technologies are used with supplementary uplink frequencies, then the communication capability and coverage are improved, but the complexity of resource management and grant collision handling increases
Solution Approach 1:
The patent implements a universal grant identification mechanism that works across multiple radio access technologies and supplementary uplink frequencies. The identification fields and differentiation methods are designed to be technology-agnostic, allowing the same resource management approach to be applied universally across different RATs and frequency configurations, thereby reducing the perceived complexity despite enhanced adaptability
Solution Approach 2:
The patent applies preliminary action by pre-configuring grant parameters and identification rules before multi-RAT operation begins. The terminal and base station establish agreed-upon identification mechanisms and resource allocation patterns in advance, which simplifies real-time resource management when multiple RATs with supplementary uplink are actively used
Data Source
AI summary
The disclosure relates to a communication scheme and system for converging a 5th generation (5G) communication system for supporting a data rate higher than that of a 4th generation (4G) system with an internet of things (IoT) technology. The disclosure is applicable to intelligent services (e.g., smart home, smart building, smart city, smart car, connected car, health care, digital education, retail, and security and safety-related services) based on 5G communication technology and IoT-related technology. The disclosure relates to a technology about system information request-related operations of a terminal and a base station.