Wireless Cell Information Management for Mobile Terminals
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Solution Overview
Problem
Existing wireless communication technologies face inefficiencies in acquiring and managing cell information, leading to unnecessary acquisition of known cells and potential handover failures due to lack of information on unknown cells.
Innovation Solution
A wireless communication system and method where a base station acquires and stores cell information, including quality and identification details, and transmits this information to a mobile terminal, which measures and compares surrounding cells to detect unknown cells, and reports their information back to the base station for updating the cell lists.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the base station acquires cell information from the mobile device, then the base station obtains neighboring cell information, but the base station also acquires known cells that do not need to be acquired, causing unnecessary data transmission
Solution Approach 1:
The invention extracts only the necessary information (unknown cells) from the complete set of neighboring cell information. The mobile device compares its measured neighboring cells with the stored known cell list and reports only those cells that are not in the known list, thereby extracting and transmitting only the novel, useful information while eliminating redundant data about already-known cells.
2Reliability
If the mobile device searches all neighboring cells, then complete cell information is obtained, but the base station receives redundant information about known cells
Solution Approach 1:
The invention implements a feedback mechanism where the base station provides the mobile device with a list of known neighboring cells, and the mobile device uses this feedback to filter its measurements. By comparing measured cells against the known cell list received from the base station, the mobile device can efficiently identify and report only unknown cells, improving both reliability and efficiency.
3Reliability
If the base station maintains a complete list of all neighboring cells, then handover decisions are reliable, but the system requires continuous updates and large storage
Solution Approach 1:
The invention applies preliminary action by having the base station pre-populate the mobile device with a list of known neighboring cells before the mobile device performs measurements. This preliminary provision of information allows the mobile device to filter out known cells during measurement, so that only new, previously unknown cells need to be reported and added to the base station's list, reducing the burden of continuous updates and storage.
Data Source
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AI summary
In order to make it possible for a mobile terminal to measure surrounding cell information on the basis of a direction from a base station and to select only cell information on an unknown cell detected from the surrounding cell information and notify the base station of the cell information on the unknown cell when information on surrounding cells is acquired by the base station, a wireless communication system comprising the base station and the mobile terminal is characterized in that the base station comprises: a cell information acquisition means for acquiring cell information including cell quality information and cell identification information on surrounding cells located around the base station; and a transmission means for transmitting, to the mobile terminal, known cell information and acquisition direction for cell information on unknown cells that do not have cell information corresponding to the known cell information.