Paging Early Indication Bit Field for Reference Signal Validity
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Solution Overview
Problem
Current communication technologies lack an effective method to indicate the validity of reference signal transmission occasions in user equipment (UE), leading to unnecessary wake-ups and increased power consumption, as UE needs to perform serving cell measurements during each paging cycle even when a paging early indication (PEI) suggests no need to listen to paging messages.
Innovation Solution
A method using a second bit field in the paging early indication (PEI) to indicate the validity of reference signal transmission occasions, allowing the UE to determine whether to wake up and listen to paging occasions, thereby reducing unnecessary wake-ups and power consumption by aligning time-frequency synchronization, automatic gain control, and radio resource management measurements with valid reference signal transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE performs serving cell measurement during each paging cycle, then the time-frequency synchronization, AGC, and RRM measurement can be conducted, but the number of wake-up times increases and power consumption increases
Solution Approach 1:
The network side device performs preliminary action by transmitting the validity indication of the reference signal transmission occasion before the UE needs to perform measurement. This allows the UE to advance knowledge of whether the reference signal is available, enabling the UE to decide in advance whether to wake up for measurement, thus avoiding unnecessary wake-ups and reducing power consumption while ensuring reliable synchronization and measurement when needed.
2Use of energy by moving object
If the UE does not perform serving cell measurement, then the number of wake-up times is reduced and power consumption is reduced, but the time-frequency synchronization and RRM measurement cannot be conducted
Solution Approach 1:
The network side device provides feedback through the validity indication in the PEI, informing the UE whether the reference signal transmission occasion is valid. This feedback mechanism allows the UE to make informed decisions about whether to perform measurement, balancing power consumption with the need for reliable time-frequency synchronization and RRM measurement.
3Measurement precision
If a validity indication is added to the PEI, then the accuracy of reference signal transmission occasion indication is improved, but the bit overhead increases
Solution Approach 1:
The invention changes the parameter structure of the PEI by adding a validity indication bit that indicates whether the reference signal transmission occasion is valid. This parameter change enables accurate indication of reference signal availability without significantly increasing bit overhead, as it is a single bit that provides crucial information for the UE's decision-making process.
Data Source
AI summary
Provided is a method for indicating validity of a reference signal transmission occasion, and a user equipment. The method includes: receiving a paging early indication (PEI) of a current paging cycle sent by a network side device. The PEI includes a first bit field and a second bit field. In response to the first bit field being configured to indicate a need to wake up, the second bit field is configured to indicate whether a first reference signal transmission occasion is valid or invalid; or in response to the first bit field being configured to indicate no need to wake up, the second bit field is configured to indicate whether a second reference signal transmission occasion is valid or invalid.