UE-Independent Frequency Reference Point for 5G Resource Block Indexing
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Solution Overview
Problem
5G wireless communication systems face challenges in providing user equipment (UEs) with reference signals when the UE does not know the bandwidth of its component carrier, especially in intra-band carrier aggregation and single wideband modes, requiring a solution for consistent frequency location indexing across different operating modes.
Innovation Solution
The implementation of a UE-independent frequency reference point for resource block indexing, allowing UEs to determine a UE-independent index without knowing the component carrier bandwidth, using methods such as obtaining a reference point from remaining system information or synchronization signal blocks, enabling consistent frequency location indexing across all devices in a network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional frequency location indexing is used that depends on component carrier bandwidth, then the indexing can be accurately determined for each specific carrier configuration, but different types of UEs (single normal CC mode, intra-band CA mode, single wideband mode) require different indexing methods, increasing system complexity
Solution Approach 1:
The patent applies universality by introducing a UE-independent frequency reference point that serves all types of UEs (single normal CC mode, intra-band CA mode, and single wideband mode) with a unified indexing method. This single reference point enables consistent frequency location indexing across diverse UE configurations and operating modes, eliminating the need for multiple indexing schemes while maintaining accuracy.
2Adaptability or versatility
If UE-specific frequency reference points are used for resource block indexing, then the indexing can be adapted to specific UE requirements, but UEs must know the component carrier bandwidth to determine the reference point, creating a dependency that complicates system operation
Solution Approach 1:
The patent applies self-service by making the frequency reference point determination independent of UE knowledge of component carrier bandwidth. The base station configures and signals the UE-independent reference point through system information, allowing UEs to autonomously determine resource block indexes without requiring bandwidth information or complex calculations, thereby simplifying UE operation.
3Reliability
If a unified UE-independent frequency reference point is implemented for all UEs, then consistent frequency location indexing is achieved across all device types and operating modes, but the system must establish and signal this reference point through additional system information mechanisms
Solution Approach 1:
The patent uses the remaining system information (RMSI) as an intermediary to signal the offset value that defines the UE-independent frequency reference point. This intermediary mechanism allows the base station to convey the reference point configuration to all UEs in a standardized manner, enabling reliable unified indexing without requiring complex direct signaling between base station and each UE type.
Data Source
AI summary
A method, system, and device for resource block (RB) indexing in a user equipment (UE) is provided. In an embodiment, the method includes obtaining, at the UE, a UE-independent frequency reference point. The method also includes determining, by the UE, a UE-independent index of an RB according to the UE-independent frequency reference point.