UE SSB Measurement Indication Across BWP Frequency Positions
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Solution Overview
Problem
In wireless communications systems, when a user equipment (UE) does not receive a downlink activated bandwidth part (BWP) including a cell defining Synchronization Signal and PBCH block (SSB), it fails to perform measurements, leading to frequent retuning and discontinuous downlink reception.
Innovation Solution
A method and device that allow a UE to perform measurements at second SSBs with different frequency positions by receiving indication information, enabling intra-frequency measurements without requiring a measurement gap, thus reducing frequency retuning and improving measurement flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the terminal jumps to the frequency of an SSB for measurement when the current BWP does not include the SSB, then measurement can be performed, but frequent retuning of receiving frequency occurs resulting in discontinuous downlink reception
Solution Approach 1:
The network device pre-configures multiple SSB frequency positions and indicates to the terminal which SSB frequencies are available for measurement before measurement is needed. This allows the terminal to prepare measurement configurations in advance without requiring frequent frequency retuning during operation, thus maintaining downlink reception continuity while enabling measurement capability.
Solution Approach 2:
The patent introduces indication information as an intermediary mechanism between the network device and terminal. This indication information carries measurement configuration data including SSB frequency positions, allowing the terminal to perform measurements without directly jumping to SSB frequencies during active downlink reception, thereby resolving the conflict between measurement capability and reception continuity.
2Adaptability or versatility
If the terminal performs measurement at SSB frequency different from current BWP, then measurement of serving cell is enabled, but receiving frequency retuning is required causing measurement gaps
Solution Approach 1:
The terminal is configured to perform measurements at multiple pre-indicated SSB frequency positions within the same frequency band. This multi-functionality allows the terminal to measure serving cell quality at different SSB frequencies without leaving the current BWP, eliminating the need for measurement gaps while maintaining measurement flexibility through multiple measurement options.
Solution Approach 2:
The network device changes the parameter of SSB frequency position indication to provide multiple measurement frequency options to the terminal. By indicating different SSB frequency positions that are accessible within the current BWP, the terminal can adjust measurement parameters without requiring frequency retuning, thus eliminating measurement gaps while preserving measurement flexibility.
Data Source
AI summary
Embodiments of the present disclosure provide a measurement method, a measurement indication method, and a device. The method includes receiving indication information, where the indication information indicates whether a terminal can perform measurement at one or more second SSBs, a frequency position of the second SSB is different from a frequency position of a first SSB, and the first SSB is an SSB for measurement of a serving cell. In the embodiments of the present disclosure, the terminal may perform RRM measurement at a non-cell defining SSB in a BWP at which downlink reception is currently performed, which reduces interruption of data transmission, and improves flexibility of measurement behavior of the terminal.