SS Block Index Indication for 5G Mobility and Rate Matching
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Solution Overview
Problem
Current wireless communication systems, particularly in the transition to 5G, face challenges in efficiently managing synchronization signals and timing indications due to the need for enhanced mobility support, increased data rates, and flexible service accommodations, which are not adequately addressed by existing synchronization and cell search procedures.
Innovation Solution
The implementation of a system that includes a user equipment (UE) and base station (BS) configured to receive and transmit sets of higher-layer configuration information for identifying and reporting synchronization signal (SS) block indices and timing indications, utilizing advanced techniques such as beamforming and orthogonal frequency division multiple access (OFDMA) to enhance synchronization and cell search processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing synchronization and cell search procedures are used in 5G systems, then basic connectivity is maintained, but the system cannot adequately support enhanced mobility, higher data rates, and flexible service accommodations
Solution Approach 1:
The patent segments the SS block identification process by introducing separate indication fields: one for indicating the number of SS blocks and another for indicating the SS block index. This segmentation allows independent optimization of each parameter, enabling the system to adapt to different mobility scenarios and service requirements while maintaining reliable synchronization through structured information delivery.
Solution Approach 2:
The patent implements dynamic configuration of SS block parameters through higher-layer signaling. The base station can dynamically adjust the number of SS blocks and their indices based on current network conditions, mobility requirements, and service demands. This dynamic approach enables the system to transition between different operational modes (e.g., high mobility vs. low mobility scenarios) while maintaining synchronization reliability.
2Productivity
If the number of SS blocks is increased to support higher data rates and mobility, then system capacity and flexibility improve, but the complexity of managing SS block indices and timing indications increases
Solution Approach 1:
The patent introduces higher-layer configuration information as an intermediary between the physical layer SS blocks and the UE processing. This intermediary layer provides structured indications of the number of SS blocks and their indices, abstracting the complexity of managing large numbers of SS blocks. The UE uses these higher-layer indications to efficiently identify and process relevant SS blocks without directly managing the full complexity of the SS block structure.
Solution Approach 2:
The patent changes the parameter representation by using separate indication fields for the number of SS blocks and their indices. Instead of using fixed or implicit indexing schemes, the system dynamically adjusts parameters through explicit signaling. This parameter change approach allows the system to scale to higher capacities while maintaining manageable complexity through structured, adaptive parameter delivery.
3Ease of manufacture
If traditional cell search procedures are used, then implementation simplicity is maintained, but they cannot meet the requirements for 5G mobility and data rate targets
Solution Approach 1:
The patent applies preliminary action by providing higher-layer configuration information before the UE needs to process SS blocks for mobility or data transmission. The base station pre-configures the UE with indications of SS block numbers and indices, allowing the UE to quickly identify relevant blocks without performing exhaustive searches. This preliminary configuration maintains implementation simplicity while enabling fast mobility support and high data rates.
Data Source
AI summary
Apparatuses and methods for synchronization signal (SS) block index and timing indication in wireless communication systems. A method of operating a user equipment (UE) includes receiving, from a base station (BS), sets of higher-layer configuration information. When configured for mobility measurement on SS and physical broadcast channel (PBCH) (SS/PBCH) blocks, the UE identifies, based on one of the sets of higher-layer configuration information, a first set of SS/PBCH blocks configured for the mobility measurement; and measures and reports mobility measurement quantities for the first set of SS/PBCH blocks. When configured for receiving a physical downlink shared channel (PDSCH), the UE identifies, based on another of the sets of higher-layer configuration information, a second set of SS/PBCH blocks configured for the UE; and receives the PDSCH with rate matching around a SS/PBCH block included in the second set of SS/PBCH blocks.