Lean SSB for Narrow BWP Management Procedures
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing synchronization signal blocks (SSBs) for reduced-capability user equipment (UEs), particularly in narrow bandwidth parts (BWPs), where resource use and power consumption are high due to the need for full SSBs, and switching between initial and active BWPs introduces signaling gaps.
Innovation Solution
The implementation of a lean SSB, which includes a subset of signals from the full SSB, such as primary and secondary synchronization signals, but excludes broadcast signals, is transmitted in a narrow BWP, reducing overhead and resource use while maintaining high-density transmissions, and is configured to be received in anchor BWPs to support management procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If full SSBs are transmitted in narrow BWP for reduced-capability UEs, then management procedures can be performed, but resource use and power consumption increase
Solution Approach 1:
The patent extracts only the essential synchronization signals (PSS and SSS) from the full SSB structure, creating a lean SSB that excludes the broadcast channel. This extraction maintains the core functionality needed for management procedures while removing unnecessary components that consume additional resources and power.
Solution Approach 2:
The patent segments the SSB into two types: full SSBs for initial acquisition and lean SSBs for ongoing management procedures. This segmentation allows the system to use different levels of signal complexity appropriate to different operational phases, reducing overall resource consumption.
2Reliability
If full SSBs are transmitted in narrow BWP, then management procedures can be performed, but resource use increases
Solution Approach 1:
The patent extracts only the essential synchronization signals (PSS and SSS) from the full SSB structure, creating a lean SSB that excludes the broadcast channel. This extraction maintains the core functionality needed for management procedures while removing unnecessary components that consume additional resources.
Solution Approach 2:
The patent segments the SSB into two types: full SSBs for initial acquisition and lean SSBs for ongoing management procedures. This segmentation allows the system to use different levels of signal complexity appropriate to different operational phases, reducing overall resource consumption.
3Adaptability or versatility
If UE switches between initial and active BWPs, then can operate in narrow BWP, but signaling gaps are introduced
Solution Approach 1:
The patent configures lean SSBs in advance within the active BWP before the UE needs to perform management procedures. This preliminary configuration eliminates the need for the UE to switch back to the initial BWP, thereby preventing signaling gaps and maintaining continuous operation.
Solution Approach 2:
The lean SSB acts as an intermediary that enables management procedures directly within the active BWP, serving as a bridge between the initial acquisition phase and the active communication phase. This intermediary structure eliminates the need for switching between BWPs.
4Quantity of substance
If lean SSB is transmitted in narrow BWP, then resource use is reduced, but measurement quality may be affected
Solution Approach 1:
The patent applies local quality by providing different SSB types in different contexts: full SSBs in the initial BWP for comprehensive signal acquisition and lean SSBs in the active BWP for efficient ongoing measurements. Each location receives the appropriate level of signal detail needed for its specific function.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described to support using one of multiple types of synchronization signal blocks (SSBs) to perform one or more management procedures. A base station may configure and transmit one or more SSBs of second type that are smaller than SSBs of a first type. For instance, SSBs of a second type may include a first subset of signals and may exclude a second subset of the signals that are included in an SSB of the first type. An SSB of the second type may be transmitted in an active bandwidth region used for communications between a user equipment (UE) and the base station. The UE may receive an SSB of the second type in an active bandwidth region, may perform one or more measurements using the SSB of the second type, and may perform one or more management procedures.