Sharing System Information Across Multiple Cells
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Solution Overview
Problem
In high mobility environments, user equipment (UEs) face challenges in acquiring requisite system information to establish communication channels due to short dwell durations in cell coverage areas, leading to increased overhead and delay in wireless communication systems.
Innovation Solution
The described techniques enable UEs to share system information among multiple cells by receiving a set of system information from a first cell, identifying an operation mode indicating its applicability across a plurality of cells, and applying this information to establish communication channels in new cells without decoding new system information, reducing overhead and improving reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs receive and decode new system information for each new cell, then communication channel establishment is reliable, but signaling overhead and delay increase in high mobility environments
Solution Approach 1:
The network pre-configures UEs with system information for multiple cells before the UE actually needs to access them. The base station transmits system information blocks containing configuration parameters for a plurality of cells, and the UE stores this information for future use when moving to new cells, eliminating the need to decode new system information upon cell reselection.
Solution Approach 2:
A single system information block serves multiple functions by containing configuration parameters applicable to multiple cells simultaneously. The same system information received from one base station can be applied across multiple cells including those served by different base stations, making the information universally applicable rather than cell-specific.
2Measurement precision
If UEs receive and decode new system information for each new cell, then communication channel establishment is accurate, but signaling overhead increases
Solution Approach 1:
The patent merges system information for multiple cells into a single system information block transmitted by one base station. Instead of receiving separate system information blocks from each cell, the UE receives one consolidated block containing parameters for multiple cells, reducing the total quantity of signaling while maintaining accuracy through the unified configuration.
3Quantity of substance
If UEs apply system information from one cell to multiple cells, then signaling overhead is reduced, but system information applicability must be ensured
Solution Approach 1:
The system information block contains cell-specific identification parameters (such as cell IDs or frequency information) that allow the UE to determine exactly which cells can use the pre-configured system information. This ensures that system information is applied only to appropriate cells where it is valid, maintaining local quality and applicability while enabling multi-cell reuse.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A base station may transmit a set of system information to a user equipment (UE), and the UE may identify an operation mode indicating that the system information is applicable for a plurality cells. When the UE detects that it is in a new cell associated with a second base station, the UE may apply the received system information to establish a communication channel in the new cell associated with the second base station. As such, rather than receiving and decoding new system information upon detection of a new cell/base station, the UE may be able to efficiently apply the known system information to establish a connection in the new cell.