RedCap UE Control Resource Set Configuration for 5G Reception
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Solution Overview
Problem
Reduced capability terminal equipment (RedCap UE) in 5G networks faces challenges in receiving control information and data due to bandwidth limitations, particularly when coexisting with other UEs, as the maximum bandwidth capability of 50 MHz exceeds the reception capabilities, leading to incorrect reception of control resource sets and initial downlink bandwidth parts.
Innovation Solution
A method and apparatus for terminal equipment to determine and monitor a second control resource set or search space based on indication information, allowing correct reception of downlink control and data channels by adjusting the resource set or search space configuration, enabling correct reception even in scenarios with larger bandwidths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the control resource set 0 and initial downlink bandwidth part are configured with large bandwidth to support high data rates, then the data transmission capability is improved, but the RedCap UE with limited bandwidth capability (50 MHz) cannot correctly receive the control information and data
Solution Approach 1:
The network device segments the control resource set into multiple parts: a first control resource set with bandwidth exceeding the RedCap UE capability, and a second control resource set with bandwidth within the RedCap UE capability. The network transmits downlink control information in both sets, allowing RedCap UEs to correctly receive control information in the second set while full-capability UEs can receive from the first set, thus resolving the contradiction between high data transmission capability and reliable reception for bandwidth-limited devices.
2Adaptability or versatility
If the network supports multiple UE types with different bandwidth capabilities, then the system adaptability is improved, but the complexity of resource configuration increases
Solution Approach 1:
The network device creates a universal resource configuration scheme where the second control resource set serves multiple functions: it acts as the primary control resource set for RedCap UEs with limited bandwidth capability, and simultaneously serves as an alternative reception resource for full-capability UEs. This multi-functional approach allows the network to support multiple UE types without requiring completely separate configuration schemes, thereby improving adaptability while controlling configuration complexity.
Data Source
AI summary
An apparatus, applicable to a terminal equipment, includes a receiver configured to receive first indication information, the first indication information being used for indicating first configuration information of a first control resource set, a processor configured to determine second configuration information of a second control resource set of the terminal equipment according to the first indication information or a synchronization signal block (SSB) to which the first control resource set corresponds, and monitor, on resources of the second control resource set, monitor a physical downlink control channel used for receiving a physical downlink shared channel where system information is located.