Wireless Device Signal Reception Using Aligned Synchronization and RRM Reference Signals
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Solution Overview
Problem
Current mobile communication technologies, such as 3GPP LTE, face challenges in efficiently managing radio resource management reference signals (RRM-RS) for optimal beam selection and communication capacity, especially in scenarios requiring massive machine-type communications and ultra-reliable low-latency communications.
Innovation Solution
A method for wireless devices to receive synchronization signals and RRM-RSs from serving and neighbor cells, using different numerologies and aligning RRM-RSs with synchronization signals, to select the best beam and support various communication scenarios, including the use of secondary synchronization signals and channel state information reference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If RRM-RS resources are aligned with SS block resources, then neighbor cell measurement efficiency is improved, but resource flexibility is reduced
Solution Approach 1:
The patent implements dynamic resource allocation where RRM-RS resources can be flexibly configured based on network conditions. The system allows RRM-RS to be transmitted in the same OFDM symbol as SS block when needed for efficient neighbor cell measurement, while also permitting separate transmission when resource flexibility is required. This dynamic switching between aligned and separate resource configurations resolves the contradiction between measurement efficiency and resource flexibility.
2Measurement precision
If multiple RRM-RS types are used (SSS and CSI-RS), then measurement accuracy is improved, but system complexity is increased
Solution Approach 1:
The patent employs multiple RRM-RS types (SSS and CSI-RS) that serve different measurement purposes. SSS is used for basic synchronization and coarse measurement, while CSI-RS provides enhanced measurement capabilities for beam selection and channel state information. By assigning specific functions to each RRM-RS type, the system achieves high measurement accuracy without unnecessary complexity, as each signal type is optimized for its particular role rather than using a single complex signal for all purposes.
3Productivity
If RRM-RS is transmitted in the same OFDM symbol as SS block, then resource utilization is improved, but signal interference risk is increased
Solution Approach 1:
The patent segments the RRM-RS transmission into different resource elements within the OFDM symbol structure. By carefully allocating specific subcarriers and resource elements for RRM-RS while leaving other elements for SS block transmission, the system achieves high resource utilization while minimizing interference. The segmentation allows simultaneous transmission of multiple signals in the same time-frequency resource with controlled interference through proper resource element mapping and power allocation.
Data Source
AI summary
The disclosure of the present invention proposes a method for receiving signals. The method may be performed by a wireless device and comprise: receiving synchronization signals (SSs) from a serving cell and from a neighbor cell; and receiving radio resource management reference signals (RRM-RSs) from the serving cell and from the neighbor cell.