Power-Saving Base Station SSB Measurement With PBCH-Free Index Signaling
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Solution Overview
Problem
User Equipment (UE) faces challenges in obtaining SSB index information from power-saving base stations that do not transmit a Physical Broadcast Channel (PBCH), hindering SSB measurement and reporting.
Innovation Solution
UE monitors first information sent by a power-saving base station, which can include signals formed by PSS and SSS, either explicitly or implicitly carrying SSB index information, or signals with PSS and SSS in different frequency domain positions, to perform SSB measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a power-saving base station transmits only light SSB (without PBCH), then energy consumption is reduced, but UE cannot obtain SSB index information
Solution Approach 1:
The patent introduces a serving cell as an intermediary to provide SSB index information. The serving cell contains PBCH which can convey SSB index information about neighboring power-saving cells, allowing UE to obtain the needed information without the power-saving base station transmitting full SSB.
Solution Approach 2:
The patent extracts only the necessary SSB index information from the full SSB structure and conveys it through PBCH in the serving cell. This allows the power-saving base station to omit transmitting complete SSB (saving energy) while still providing the essential index information needed for UE measurement.
2Productivity
If UE performs SSB measurement on power-saving cells, then mobility management is improved, but UE cannot accurately measure without SSB index information
Solution Approach 1:
The serving cell acts as an intermediary that provides SSB index information to UE. This allows UE to perform accurate SSB measurements on power-saving cells while the serving cell's PBCH carries the necessary index information that would otherwise be missing.
Solution Approach 2:
The SSB index information is prepared and conveyed in advance through PBCH in the serving cell before UE needs to perform measurements on power-saving cells. This preliminary provision of information enables UE to conduct accurate measurements without requiring real-time transmission of complete SSB from power-saving base stations.
Data Source
AI summary
An SSB measurement method and apparatus, user equipment, and a storage medium are provided. The SSB measurement method includes: monitoring, by UE, first information sent by a power-saving base station; and performing, by the UE, SSB measurement of a power-saving cell based on the first information, where the power-saving cell is a serving cell of the power-saving base station. The first information includes at least one of the following: a first signal formed by a second signal and a payload, the first signal explicitly carries SSB index information, and the second signal includes at least one of a PSS or an SSS; a third signal formed by a PSS and an SSS, and the third signal implicitly carries SSB index information; or a fourth signal including at least one of a PSS or an SSS, and the PSS and the SSS are in different frequency domain positions.