Reference Signal Configuration for Flexible Cell Detection
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Solution Overview
Problem
Current wireless communication systems face inflexibility in cell detection and spectrum sharing due to strict adherence to predefined signaling structures, which limits the introduction of new services and dynamic coexistence with multiple radio access technologies, especially when transitioning between legacy and new standards like LTE and NR.
Innovation Solution
A multilevel approach for receiving reference signals is implemented, allowing user equipment to dynamically configure measurement configurations including frequency location, carrier frequency, and maximum allowed measurement bandwidth through higher layer signaling, enabling flexible cell detection and coexistence between different communication standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If synchronization signals are transmitted within the center 6 physical resource blocks (PRBs) of a transmission channel bandwidth, then it is easier to locate and identify the synchronization signals, but the system becomes less flexible in terms of introducing new services and sharing spectrum access with other radio access technologies
Solution Approach 1:
The patent applies dynamics by making the synchronization signal location configurable rather than fixed. The network can dynamically indicate the frequency location of synchronization signals through higher layer signaling, allowing the system to adapt between fixed center-6-PRB locations and flexible locations based on service requirements and spectrum sharing needs with legacy systems
Solution Approach 2:
The patent changes the parameter of synchronization signal frequency location from a fixed value (center 6 PRBs) to a configurable parameter. By allowing the network to indicate different frequency locations through signaling, the system can adjust the synchronization signal position to accommodate different service types and coexistence scenarios with legacy radio access technologies
2Stability of the object's composition
If a predetermined signaling structure is strictly adhered to for synchronization signals, then the system maintains stability and ease of operation, but the system becomes less flexible in terms of avoiding strong interference and enabling shared spectrum access
Solution Approach 1:
The patent introduces dynamics into the signaling structure by allowing flexible configuration of synchronization signal parameters. While maintaining a stable base structure, the system can dynamically adjust synchronization signal frequency locations and other parameters to avoid interference and enable spectrum sharing with legacy systems
3Ease of operation
If a fixed frequency location is used for synchronization signals, then the system simplifies operation and reduces complexity, but the system loses flexibility in supporting multiple numerology sets and new service types
Solution Approach 1:
The patent makes the synchronization signal frequency location dynamic rather than fixed. The network can indicate different locations through higher layer signaling, allowing the system to maintain simple operation for basic cases while gaining flexibility to support multiple numerology sets and new service types when needed
Data Source
AI summary
A method and apparatus include receiving a measurement configuration by higher layer signaling, where the higher layer signaling is above the physical layer. The measurement configuration includes at least information of frequency location of synchronization signals, a carrier frequency, and a maximum allowed measurement bandwidth. A measurement reference signal is then received based on the received measurement configuration, and a measurement based on the received measurement reference signal is performed.