Dynamic SSB Pattern Selection to Reduce Terminal Access Delay
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Solution Overview
Problem
In existing communication protocols, a terminal device can only receive synchronization signal blocks (SSBs) based on a default pattern in a given operating band, leading to increased access delays and reduced access performance when the required number of SSBs is less than the default quantity.
Innovation Solution
The terminal device determines SSB information based on a first frequency point and corresponding information, allowing it to select from multiple SSB patterns within an operating band, including SSB periodicity, maximum quantity, and location, to optimize SSB reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the terminal device uses the default SSB pattern with 256 SSBs and 640 ms periodicity, then the SSB search is performed based on the default configuration, but the access delay increases unnecessarily when fewer SSBs are required
Solution Approach 1:
The patent makes the SSB pattern dynamic by allowing the terminal device to select from multiple SSB patterns (first pattern with 256 SSBs, second pattern with fewer SSBs) based on the actual coverage requirements. The network device indicates which pattern to use through downlink information, enabling the system to adapt the SSB configuration dynamically rather than using a fixed default pattern, thereby reducing access delay when fewer SSBs are sufficient.
Solution Approach 2:
The patent changes the SSB pattern parameters (number of SSBs, periodicity) based on coverage requirements. The network device configures multiple SSB patterns with different parameters and indicates the appropriate pattern to the terminal device through downlink information. This allows the system to adjust SSB parameters dynamically, reducing access delay when the default 256 SSB pattern is not necessary.
2Reliability
If the terminal device performs SSB search based on the default 640 ms periodicity, then the search covers all possible SSB locations, but the access performance deteriorates when the required SSB quantity is reduced to 128 SSBs requiring only 320 ms
Solution Approach 1:
The patent enables dynamic selection of SSB patterns based on actual needs. When the network device determines that 128 SSBs are sufficient for coverage, it configures and indicates the second SSB pattern to the terminal device. This dynamic adaptation maintains reliable SSB reception while significantly improving access speed by reducing the search time from 640 ms to 320 ms.
Solution Approach 2:
The patent changes SSB parameters (quantity, periodicity) according to coverage requirements. The network device configures multiple SSB patterns with different parameters and selects the appropriate one based on actual needs, then indicates it to the terminal device. This parameter adaptation ensures reliable reception while optimizing access speed by avoiding unnecessary long-period searches.
3Ease of manufacture
If one operating band supports only one type of SSB pattern, then the configuration is simple and standardized, but the system cannot optimize for different access requirements within the same operating band
Solution Approach 1:
The patent makes the operating band universal by supporting multiple SSB patterns within the same band. The network device configures both first and second SSB patterns in each operating band and can indicate either pattern to terminal devices based on their specific access requirements. This multi-functionality approach maintains protocol simplicity while enabling flexible optimization for different scenarios.
Solution Approach 2:
The patent segments the SSB configuration by dividing it into multiple patterns (first pattern with 256 SSBs, second pattern with fewer SSBs) that can be selected within each operating band. The network device configures these segmented patterns and indicates the appropriate one to each terminal device based on specific access requirements, maintaining overall protocol simplicity while enabling fine-grained optimization.
Data Source
AI summary
Multiple communication methods are disclosed. One method includes determining first SSB information based on a first frequency point and first information; and receiving, on the first frequency point based on the first SSB information, an SSB sent by a network device, where the first information includes correspondences between a plurality of frequency points in an operating band to which the first frequency point belongs and a plurality of pieces of SSB information, the operating band to which the first frequency point belongs is determined by one frequency range, the correspondences between the plurality of frequency points and the plurality of pieces of SSB information include a correspondence between the first frequency point and the first SSB information.