Mobile Terminal Uplink Resource Allocation for GPS Interference
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Solution Overview
Problem
Mobile terminal transmissions can interfere with GPS receivers, preventing accurate location determination, especially during emergency calls when reliable GPS location acquisition is critical.
Innovation Solution
A method and apparatus that detect interfering communications connections in mobile terminals and control uplink resource allocation to prevent interference with satellite system signals by scheduling transmission bandwidth, ensuring simultaneous reception of satellite signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mobile terminal transmissions are allowed during emergency calls, then communication capability is maintained, but GPS signal reception is interfered with
Solution Approach 1:
The system implements periodic time-division multiplexing where the mobile terminal alternates between communication transmission periods and GPS reception periods. During emergency calls, the terminal transmits communication signals in allocated time slots and switches to receive GPS satellite signals in other time slots, allowing both functions to operate periodically without mutual interference
Solution Approach 2:
The system dynamically adjusts the uplink resource allocation and time-division scheduling based on the operational state of the mobile terminal. When GPS location determination is required during an emergency call, the system dynamically modifies the transmission schedule to prioritize GPS signal reception, and adjusts communication transmission parameters to minimize interference while maintaining call connectivity
2Productivity
If uplink resource allocation is increased for mobile terminal transmissions, then communication quality is improved, but interference to satellite signals increases
Solution Approach 1:
The system uses periodic time-division multiplexing to separate communication transmissions and GPS receptions in time. By allocating specific time slots for each function, the system maintains high communication quality during transmission slots while ensuring complete signal reception during GPS slots, eliminating the trade-off between communication quality and interference levels
Solution Approach 2:
The system changes the temporal parameters of uplink resource allocation dynamically. Based on whether GPS location determination is needed, the system adjusts the timing, duration, and frequency of uplink transmission slots, thereby controlling the level of interference to satellite signals while maintaining acceptable communication quality
Data Source
AI summary
An apparatus is provided to include a detector. The detector can detect that an interfering communications connection to a received satellite system signal in a mobile terminal is to be established by the mobile terminal. The apparatus include a processor that can prevent interference to the received satellite system signal due to the interfering communications connection by controlling uplink resource allocation of the mobile terminal based on the detection.