Selective System Information Reading for Wireless Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication devices, frequent transitions between cells, especially in modern cellular networks with small cell sizes and high mobility, result in increased power consumption and processing overhead due to the need to read duplicative system information from each new cell.
Innovation Solution
Grouping cells with shared system information into multi-cell cell groups allows devices to selectively read only the differing information when transitioning between cells within the same group, reducing the need to read all system information broadcast by the new serving cell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wireless communication device reads all system information broadcast by each new cell upon transitioning, then the device ensures complete and accurate system information is obtained, but the processing overhead and power consumption increase significantly
Solution Approach 1:
The patent extracts only the essential system information that has changed between cells, rather than reading all system information. The device identifies and reads only the differential system information (delta SI) when transitioning between cells, eliminating the need to process duplicative information while maintaining reliability of essential system information.
Solution Approach 2:
The patent applies partial action by reading only a portion of the system information - specifically, only the changed portions - rather than reading the complete system information broadcast by each cell. This partial reading approach reduces processing overhead and power consumption while still obtaining the necessary system information for proper device operation.
2Speed
If cell sizes are reduced to provide higher throughput capability, then network capacity and speed are improved, but the frequency of cell reselection increases, resulting in increased power consumption and processing overhead
Solution Approach 1:
The patent extracts only the changed system information when transitioning between small cells, allowing the device to handle frequent cell reselections in high-speed networks without proportionally increasing power consumption. By reading only the differential information rather than complete system information each time, the energy cost of frequent transitions is significantly reduced.
Solution Approach 2:
The patent applies partial action by performing selective system information reading - only the necessary changed portions are read during cell transitions. This approach enables the network to maintain small cell sizes for high throughput while the device consumes less power during the increased frequency of cell reselections that result from smaller cell coverage areas.
3Reliability
If a device frequently transitions between cells in a mobility scenario, then the device maintains continuous network connectivity, but the amount of system information read increases, reducing idle state battery life
Solution Approach 1:
The patent extracts only the essential changed system information during cell transitions, allowing the device to maintain continuous network connectivity through frequent cell reselections without proportionally increasing battery consumption. The device reads only the differential system information needed to maintain proper operation, preserving battery life during mobility scenarios.
Solution Approach 2:
The patent applies partial action by reading only the necessary portion of system information - specifically the changed information - during each cell transition. This enables the device to maintain reliable network connectivity during frequent cell transitions while minimizing the time and energy spent on system information reading, thereby preserving battery life during mobility operations.
Data Source
AI summary
A method for selectively reading system information is provided. The method can include a wireless communication device reading system information broadcast by a first cell in a cell group. The read system information can include cell group information identifying the first cell as a member of the cell group and indicating membership of the cell group. The method can further include the wireless communication device moving to a second cell; determining based on the cell group information that the second cell is a member of the cell group; and in response to determining that the second cell is also a member of the cell group, reading only a portion of system information broadcast by the second cell. The read portion of system information can include the system information broadcast by the second cell that is different from the system information broadcast by the first cell.