Lighter Downlink Reference Signal for Network Energy Saving
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in optimizing network energy savings (NES) while maintaining efficient communication between user equipment (UE) and network entities.
Innovation Solution
The implementation of an apparatus that transmits a lighter downlink reference signal (DL-RS) by a network energy saving (NES) cell, allowing user equipment (UE) to detect and connect to the NES cell with assistance from an anchor cell, thereby reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a network entity transmits a full downlink reference signal (DL-RS) to enable UE detection and connection, then connection reliability is improved, but energy consumption increases
Solution Approach 1:
The patent extracts only the essential components of the DL-RS needed for UE detection and connection, transmitting a simplified version that retains critical functionality while removing redundant elements. This allows the network entity to maintain connection reliability with reduced energy expenditure.
Solution Approach 2:
The patent changes key parameters of the DL-RS transmission, including reducing signal density, adjusting transmission power levels, and modifying resource allocation patterns. These parameter modifications enable the system to achieve acceptable connection reliability at lower energy consumption levels.
2Use of energy by moving object
If a lighter downlink reference signal (DL-RS) is transmitted to reduce energy consumption, then energy efficiency is improved, but connection establishment complexity increases
Solution Approach 1:
The patent applies preliminary action by having the network entity provide assist information to the UE in advance, containing pre-configured parameters and resources needed for connection establishment. This preparation reduces the complexity of the actual connection process despite using a lighter DL-RS.
Solution Approach 2:
The patent introduces an intermediary mechanism where assist information acts as a mediator between the network entity and UE during connection establishment. This intermediary provides the additional coordination needed to compensate for the reduced signal content, managing complexity without requiring full DL-RS transmission.
3Ease of operation
If assist information is transmitted to enable UE connection to NES cell, then ease of operation is improved, but information overhead increases
Solution Approach 1:
The patent segments the assist information into distinct functional components, transmitting only the specific segments needed for particular operations. This segmentation allows the system to provide ease of operation by delivering targeted information while minimizing overall overhead through selective transmission of only necessary data elements.
Data Source
AI summary
Aspects of the disclosure are directed to techniques for paging redirection to a cell configured for network energy saving (NES) and communication with a cell configured for NES. In certain aspects, a user equipment (UE) may be configured to receive, from an anchor cell, assist information indicating resources via which a cell configured for NES transmits a downlink reference signal (DL-RS). In certain aspects, the UE may receive, from the cell configured for NES, the DL-RS via the indicated resources.