Control Resource Set Configuration for Reduced-Capability NR Coverage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The reduced capability NR devices face challenges in signal reception due to reduced antenna count and bandwidth, leading to coverage issues with channels in the original standard, necessitating coverage enhancement schemes.
Innovation Solution
A resource configuration method that adapts the resources of control resource sets for different types of user equipment (UEs) by configuring a larger number of symbols and repetition times for UEs with weak reception capabilities, allowing for improved data reception success rates and communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If reduced capability NR devices use reduced antenna count and bandwidth, then device complexity and cost are reduced, but signal reception capability deteriorates
Solution Approach 1:
The patent applies local quality by configuring different control resource set parameters for different UE capabilities. Specifically, it sets different numbers of OFDM symbols and repetition times for control resource sets based on whether the UE is a reduced capability device or a normal capability device, thereby optimizing resource allocation locally for each device type rather than using a uniform configuration
Solution Approach 2:
The patent changes key parameters of the control resource set including the number of OFDM symbols (e.g., 2 symbols for reduced capability UEs vs. 1 symbol for normal UEs) and repetition times (e.g., 2 repetitions for reduced capability UEs vs. 1 repetition for normal UEs). These parameter changes enable reduced capability devices to achieve sufficient signal reception reliability while maintaining their simplified hardware configuration
2Reliability
If coverage enhancement schemes are introduced for reduced capability devices, then signal reception capability is improved, but resource configuration complexity increases
Solution Approach 1:
The patent implements dynamics by making the control resource set configuration adaptive to UE capabilities. The network side determines UE capability type and dynamically selects appropriate configuration parameters (number of symbols, repetition times) accordingly. This dynamic adaptation allows coverage enhancement for reduced capability devices without requiring complex static configuration schemes
Solution Approach 2:
The patent applies preliminary action by having the network side pre-determine and configure appropriate control resource set parameters based on UE capability classification before actual data transmission. The UE capability type is identified in advance, and corresponding optimized parameters (such as 2 OFDM symbols and 2 repetitions for reduced capability UEs) are pre-configured, avoiding the need for complex real-time adjustments during transmission
3Measurement precision
If different resource configurations are allocated for different UE types, then decoding success rate is improved, but system complexity increases
Solution Approach 1:
The patent applies local quality by tailoring control resource set configurations specifically for reduced capability UEs versus normal capability UEs. Reduced capability UEs receive configurations with 2 OFDM symbols and 2 repetitions, while normal capability UEs receive configurations with 1 OFDM symbol and 1 repetition. This localized optimization improves decoding success rate for each device type without requiring complex configurations across the entire system
Solution Approach 2:
The patent changes specific parameters of the control resource set based on UE type: for reduced capability UEs, it increases the number of OFDM symbols from 1 to 2 and repetition times from 1 to 2. These targeted parameter changes improve decoding reliability for reduced capability devices while maintaining efficient configurations for normal capability devices, avoiding unnecessary system-wide complexity
Data Source
AI summary
An information transmission method, applied to a base station is provided. The method includes: configuring, according to a receiving object of remaining minimum system information (RMSI), resources of a control resource set corresponding to the RMSI. An information transmission method, applied to user equipment (UE), is also provided. The method includes: receiving, by a user equipment (UE), a main information block (MIB); and determining, by the UE, according to a receiving object of remaining minimum system information (RMSI), resource of a control resource set corresponding to the RMSI indicated by the MIB.