UE Control Channel Selection via Signal Thresholds
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Solution Overview
Problem
In communications systems, user equipment (UE) faces challenges in selecting a suitable control channel for reliable communication, especially in scenarios with enhanced coverage, as existing solutions lack methods for UE to autonomously determine the appropriate control channel based on signal performance parameters.
Innovation Solution
The method involves UE listening to and measuring signal performance parameters like signal-to-noise ratio, receive level, or signal strength across multiple control channels, determining a target control channel that meets specific thresholds, and adjusting or switching channels based on these parameters to ensure optimal communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the network side configures multiple control channels with different modulation and coding schemes for different coverage levels, then coverage enhancement capability is improved, but user equipment complexity in selecting the appropriate control channel increases
Solution Approach 1:
The UE autonomously selects an appropriate control channel by measuring signal quality parameters (such as RSRP or SINR) of received control channels from different coverage levels and independently determining which control channel meets its reception requirements, without requiring complex network-side assignment or additional signaling
Solution Approach 2:
The UE changes its selection criteria based on measured signal parameters, comparing the measured signal quality against threshold values associated with different coverage levels to dynamically select the most appropriate control channel for current channel conditions
2Reliability
If the network side configures multiple control channels with different modulation and coding schemes, then communication reliability for different coverage levels is improved, but the time required for user equipment to identify and select the suitable control channel increases
Solution Approach 1:
The network side pre-configures multiple control channels with different coverage levels and associates threshold information with each control channel in advance, enabling the UE to perform rapid selection by simply comparing measured signal parameters against these pre-established thresholds without requiring complex real-time decision algorithms
Solution Approach 2:
The patent replaces complex control channel selection algorithms with a simpler threshold-based comparison mechanism, where the UE selects a control channel by comparing measured signal parameters (such as RSRP or SINR) against pre-configured threshold values, significantly reducing processing time and complexity
3Reliability
If user equipment continuously monitors multiple control channels to find the best one, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The UE performs partial monitoring by measuring signal parameters of control channels from different coverage levels and selecting only the most appropriate one for its current reception capability, rather than continuously monitoring and processing all configured control channels, thereby reducing power consumption while maintaining reliable communication
Data Source
AI summary
Embodiments of the present invention disclose a method for selecting a control channel, and are applied to a communication system, to enable UE to select a control channel suitable for itself in a multi-control channel communications system. The method includes: listening, by UE, to a first control channel, and measuring a value of a performance parameter of a signal received by using the first control channel, and the first control channel is one of the at least two control channels; and when determining, according to the value of the performance parameter, that the first control channel meets a residence condition, determining the first control channel as a target control channel, where the target control channel is used to receive downlink control information sent by a base station.