Terminal Search Space Indication for Multi-Node Control Information
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Solution Overview
Problem
In multi-node wireless communication systems, existing methods are inefficient in searching for control information due to high data transfer demands and increased complexity with multiple nodes, leading to increased blind decoding attempts and resource allocation challenges.
Innovation Solution
A method and apparatus that involve receiving search space indication information from a base station to identify specific radio resources for control information search, distinguishing between first and second search spaces for different types of user equipment operating on different radio access technologies, and utilizing a UE list to determine radio resource regions for control information transmission, thereby reducing blind decoding attempts and optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple search spaces are monitored for control information in multi-node systems, then control information can be received from different nodes, but the number of blind decoding attempts increases significantly
Solution Approach 1:
The patent segments the control information reception by dividing search spaces into two distinct types: first search space for first-type UEs and second search space for second-type UEs. This segmentation allows the terminal to efficiently determine which search space to monitor based on its type, thereby reducing the number of blind decoding attempts while maintaining the ability to receive control information from multiple nodes in the multi-node system.
2Productivity
If additional radio resources are allocated for control information transmission in multi-node systems, then control information transmission efficiency is improved, but resource allocation complexity increases
Solution Approach 1:
The patent applies local quality by providing different search space configurations to different types of terminals. First-type terminals receive first search space indication information, while second-type terminals receive second search space indication information. This localized approach optimizes resource allocation for each terminal type based on its specific requirements, improving control information transmission efficiency without requiring a complex unified allocation scheme for all terminals.
Data Source
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AI summary
Provided is a method for searching control information by a terminal in a multimode system, comprising a plurality of nodes and a base station, which is connected to and can control each of the plurality of nodes. The method comprises the following steps: receiving search space indication information from the base station; and searching for the control information within a wireless resource region which is indicated by the search space indication information, wherein the search space indication information is information which indicates a first search space or a second search space, the first search space being a wireless region in which a first type terminal, which is operated by a first radio access technology (RAT), searches for the control information, and the second search space being a wireless region in which a second type terminal, which is operated by a second RAT, searches for the control information, wherein the terminal is the second type terminal.