Control Resource Set Configuration for Wireless Signaling Detection
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Solution Overview
Problem
In LTE communication systems, the existing control region occupies the entire bandwidth and time domain, making it inefficient for user equipment (UE) to detect control signaling, which affects reliability and detection time.
Innovation Solution
The introduction of a Control Resource Set (CORESET) that allows UE to determine the location of control channels in the frequency and time domain, enabling more efficient detection of control signaling by occupying only part of the bandwidth and time domain, and incorporating repeat configuration and notification signaling for improved reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control region occupies the entire bandwidth and time domain, then the control signaling coverage is maximized, but the detection time and complexity for UE increases
Solution Approach 1:
The control region is segmented into multiple Control Resource Sets (CORESETs), each covering a specific frequency and time range. UE can be configured with multiple CORESETs corresponding to different carriers or service types, allowing selective detection rather than scanning the entire control region, thus reducing detection time while maintaining comprehensive coverage.
Solution Approach 2:
The patent introduces a new dimension of control resource organization by mapping CORESETs to different carriers in carrier aggregation scenarios. Instead of a single monolithic control region, control signaling is distributed across multiple carriers with各自的CORESETs, enabling UE to detect control signaling on specific carriers rather than searching the entire bandwidth, significantly reducing detection complexity.
2Loss of information
If UE detects PDCCH one by one in the control region, then all control signaling can be acquired, but the detection complexity and time consumption increase
Solution Approach 1:
The base station performs preliminary action by pre-configuring UE with multiple CORESETs and their corresponding parameters (frequency location, time duration, carrier association) before actual control signaling transmission. This allows UE to have advance knowledge of where to look for control signaling on different carriers, eliminating the need for exhaustive sequential search and reducing detection complexity while ensuring complete control signaling acquisition.
3Reliability
If the control region occupies the entire bandwidth, then control signaling reliability is improved, but the resource utilization efficiency decreases
Solution Approach 1:
Different CORESETs are assigned to different local regions (carriers or frequency bands) based on local service requirements. For example, critical control signaling may be placed on dedicated carriers with robust CORESET configurations, while less critical signaling uses shared carriers. This localized optimization ensures reliable control signaling transmission where needed while allowing data traffic to utilize remaining resources efficiently, resolving the contradiction between reliability and resource utilization.
Data Source
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AI summary
The present disclosure relates to a control signaling transmission method, a terminal, and a base station, pertaining to the technical field of wireless communications. The method comprises: a terminal determining a resource location of at least one control channel for repeated transmission, the at least one control channel being located in a control area; and the terminal detecting, according to the resource location, control signaling transmitted by a base station by means of the at least one control channel, so as to acquire the control signaling. The terminal of the present disclosure determines a resource location of a control channel for repeated transmission and detects control signaling according to the determined resource location, thereby shortening the detection time of control signaling and improving the reliability of control signaling transmission.