Mobile Phone Isolation via Dual-Frequency Base Station Control
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Solution Overview
Problem
Existing methods for isolating a target mobile phone for measurement purposes cannot perform measurements independently of network operation, which is necessary for identifying and excluding abnormal mobile phones that disrupt network operations.
Innovation Solution
A method involving a monitoring base station that activates a control base station on the target mobile phone's original frequency, causing it to connect with a measuring base station on a different frequency, allowing for independent measurements without affecting other network operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a control base station is activated on the original frequency to redirect the target mobile phone to a measuring base station, then the target mobile phone can be isolated for measurement purposes, but the complexity of the system increases due to requiring multiple base stations operating simultaneously
Solution Approach 1:
The patent combines the control base station and measuring base station into a single physical base station that operates on two different frequencies. This merging reduces system complexity by eliminating the need for separate physical infrastructure while maintaining the functional separation needed for isolated measurements of the target mobile phone.
Solution Approach 2:
The base station is designed to perform multiple functions: it operates as a control base station on the original frequency to redirect the target mobile phone, and simultaneously as a measuring base station on a different frequency to conduct measurements. This multi-functionality allows a single base station to replace what would traditionally require multiple separate stations.
2Reliability
If the control base station uses high transmission power to ensure the target mobile phone connects to it, then the target mobile phone can be reliably redirected, but other mobile phones in the network may be disturbed or forced to disconnect
Solution Approach 1:
The control base station transmits with high power only on the original frequency in the specific geographic location where the target mobile phone is present. Other areas of the network continue to operate normally with standard transmission powers, thus achieving reliable connection establishment for the target phone without causing widespread network interference.
Solution Approach 2:
The control base station acts as an intermediary that temporarily assumes the role of the original network base station. It uses high transmission power only during the brief period needed to redirect the target mobile phone to the measuring base station, after which normal network operation resumes without sustained interference.
3Device complexity
If the measuring base station operates on the same frequency as the control base station, then the system is simpler to implement, but other mobile phones may incorrectly switch to the measuring base station and be subjected to measurements
Solution Approach 1:
The control base station and measuring base station operate on different frequencies, creating distinct communication channels. The control base station uses the original frequency to attract the target mobile phone, while the measuring base station uses a different frequency exclusively for measurements. This frequency separation ensures that only the target mobile phone, which has been specifically redirected, will connect to the measuring base station.
Data Source
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AI summary
A system comprises a control base station (CB), a measurement base station (MB), and a control unit (CU) and is used to establish a targeted connection between a selected target mobile phone (TM) and the measurement base station (MB). The CU activates the control base station (CB) on the target mobile phone's (TM) original frequency (f1) so that the target mobile phone (TM) establishes a connection with the control base station (CB). The CU then controls the control base station (CB) to transmit a signal that prompts the target mobile phone (TM) to search for a new base station on the measurement base station's (MB) frequency (f2). Finally, the CU activates the measurement base station (MB) so that the target mobile phone (TM) establishes a connection with the measurement base station (MB).