Cross-Cell Uplink Signal Transmission for Paging-Energy Savings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing number of services and user equipments (UEs) in wireless communication networks has led to a growing need for network energy conservation, particularly in reducing the transmission of common signals and channels such as synchronization signal blocks, system information blocks, and paging, to enhance power and energy efficiency.
Innovation Solution
The method involves performing physical downlink control channel monitoring on a first cell based on a paging radio network temporary identifier, detecting a downlink control information format with a cyclic redundancy check, and transmitting a random access channel on a second cell, allowing for the adjustment of transmission periodicities of common signals and channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If common signals and channels (SSB, SIB1, paging) are transmitted frequently to ensure network coverage and connectivity, then network reliability and UE accessibility are improved, but network energy consumption increases
Solution Approach 1:
The patent implements discontinuous transmission of common signals by configuring periodicities for SSB, SIB1, and paging transmissions. The base station transmits these signals only at scheduled intervals rather than continuously, reducing energy consumption while maintaining network reliability through periodic updates that keep UEs synchronized and informed of system changes.
Solution Approach 2:
The patent introduces dynamic adjustment mechanisms where transmission parameters (periodicity, bandwidth, power) of common signals are adapted based on network conditions, UE distribution, and traffic patterns. This dynamic configuration allows the system to optimize between energy saving and reliability requirements in different operational scenarios.
2Ease of operation
If common signals and channels are transmitted with high periodicity to ensure UE synchronization and system information availability, then UE connectivity and access efficiency are improved, but UE power consumption increases
Solution Approach 1:
The patent configures UEs with specific periodicities for monitoring common signals based on their operational state and service requirements. UEs in idle or inactive states monitor paging and system information at extended intervals, while connected UEs with active data transmissions monitor at shorter intervals, optimizing the balance between access efficiency and power consumption for different UE scenarios.
3Use of energy by stationary object
If transmission periodicity of common signals is extended to save energy, then network and UE energy consumption are reduced, but signal synchronization and information freshness are degraded
Solution Approach 1:
The patent implements dynamic periodicity adjustment where the transmission interval of common signals is adapted based on the importance and change frequency of the information being transmitted. Critical system information that changes frequently maintains shorter periodicity, while stable information uses extended periodicity. The base station also employs version indicators and change notifications to inform UEs when information updates occur, maintaining information freshness without requiring continuous transmission.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A UE may detect a DCI format with CRC scrambled by P-RNTI on a first cell, obtain information about a second cell on the basis of the DCI format, and transmit RACH in a RACH occasion in the second cell.