On-Demand SSB Detection Using SMTC Timing Configuration
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Solution Overview
Problem
The detection performance of synchronization signal blocks (SSBs) in cellular networks is inadequate, leading to resource wastage and increased power consumption due to unnecessary SSB transmissions, especially in scenarios where on-demand SSBs are required.
Innovation Solution
Implementing SSB-based measurement timing configuration (SMTC) to detect on-demand SSBs, allowing terminal devices to perform measurements efficiently and release resources promptly when not needed, using SSB type indication and measurement time information in signaling to manage SSB detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If on-demand SSB transmissions are implemented, then resource utilization is improved, but detection performance deteriorates
Solution Approach 1:
The network device pre-configures measurement timing configuration (SMTC) information and SSB type indication information before the terminal device needs to detect on-demand SSBs. This preliminary configuration enables the terminal to efficiently identify and detect only the necessary SSBs, improving detection performance while optimizing resource utilization by avoiding unnecessary transmissions.
Solution Approach 2:
SMTC (measurement timing configuration) acts as an intermediary mechanism that coordinates between the network device and terminal device. It provides timing and configuration information that enables the terminal to detect on-demand SSBs at the correct times, resolving the contradiction between resource efficiency and detection performance by mediating the interaction between transmission demands and detection requirements.
2Measurement precision
If SSB transmissions are performed continuously, then detection performance is improved, but power consumption increases
Solution Approach 1:
Instead of continuous SSB transmissions, the system implements periodic on-demand SSB transmissions based on SMTC configuration. The terminal device detects SSBs at specific periodic intervals configured by the network, maintaining detection performance while significantly reducing power consumption by avoiding continuous monitoring and transmission.
Solution Approach 2:
The terminal device autonomously manages its detection activities by using the pre-configured SMTC information to self-determine when to detect SSBs. This self-service approach enables the terminal to efficiently detect only when necessary, improving detection performance while reducing power consumption by avoiding unnecessary continuous detection operations.
3Loss of energy
If SMTC resources are released timely, then resource utilization is improved, but detection reliability may worsen
Solution Approach 1:
The system implements feedback mechanisms where the terminal device monitors SSB detection outcomes and reports to the network device. Based on this feedback, the network device intelligently manages SMTC resource release timing, ensuring resources are released only when detection reliability requirements are satisfied, thus balancing resource utilization with detection reliability.
Solution Approach 2:
The network device pre-configures SMTC resources with sufficient timing margins before actual SSB detection is needed. This preliminary configuration ensures that resources remain available long enough to maintain detection reliability, while also being configured to release resources timely after use to optimize resource utilization.
Data Source
AI summary
Provided are a communication method, a terminal device, and a network device. One example communication method includes: receiving first information from a network device, wherein the first information comprises synchronization signal/physical broadcast channel block (SSB)-based measurement timing configuration (SMTC); and using the SMTC to detect an on-demand SSB.