Wireless Device Operational Parameter Selection for Interference Avoidance
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Solution Overview
Problem
The increased demand for wireless communication services has led to the reallocation of spectrum bands, causing interference among various wireless services, such as cellular communication, GPS, and broadcast television, which complicates the design of multi-capable wireless devices that need to maintain normal communication while operating auxiliary services without reducing operational capabilities.
Innovation Solution
A wireless communication device that selects and adjusts operational parameters, such as band allocation, signaling protocols, output power, and bandwidth, to minimize interference between multiple radio systems, allowing it to operate effectively even when auxiliary services like broadcast television or AGPS are activated, by altering its capabilities list and re-registering with the communication network as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radio systems are operated simultaneously in a wireless device, then the device provides multiple services (cellular communication, GPS, broadcast television, Bluetooth), but interference occurs among the independent radio systems
Solution Approach 1:
The system dynamically changes operational parameters including frequency band selection, signaling protocols, output power levels, and bandwidth allocation based on which auxiliary services are active. For example, when broadcast television is received, the cellular transceiver operates on restricted bands and with limited bandwidth to avoid interfering with the television receiver's operation.
Solution Approach 2:
The capabilities list is dynamically adjusted based on the operational state of auxiliary services. The system transitions between different operational modes by modifying which frequency bands and protocols are available for cellular communication, allowing the device to adapt its radio system configuration in real-time to prevent interference while maintaining multi-service functionality.
2Quantity of substance
If spectrum bands are reallocated for wireless communication services, then bandwidth availability increases, but interference with other services (GPS, broadcast television) increases
Solution Approach 1:
The system modifies operational parameters such as available frequency bands, signaling protocols, and bandwidth allocation based on the operational status of auxiliary services. When GPS or broadcast television services are active, the cellular transceiver automatically restricts its operation to non-interfering frequency bands and reduces bandwidth usage to prevent harmful interference while still utilizing available spectrum resources.
3Object-affected harmful factors
If operational parameters are restricted to avoid interference, then interference with auxiliary services is reduced, but operational capability of the cellular transceiver is decreased
Solution Approach 1:
The system dynamically adjusts the capabilities list based on which auxiliary services are currently operating. When no auxiliary services are active, the full operational capability is available. When auxiliary services are detected, the system selectively restricts parameters only to the extent necessary to prevent interference, maintaining maximum operational capability under each specific condition.
Solution Approach 2:
The system changes operational parameters including frequency band selection, signaling protocols, output power, and bandwidth allocation based on the operational state of auxiliary services. These parameter changes are applied selectively and dynamically to maintain optimal cellular performance while preventing interference with active auxiliary services.
Data Source
AI summary
A wireless communication device uses operational parameters stored in a capabilities list to control operation of the device. The device may also provide auxiliary services, such as reception of broadcast television signals and location detection using network assisted GPS. When auxiliary services are selected, the cellular operation may cause interference with the auxiliary services. The wireless communication device includes a reduced set of capabilities to control operation of the wireless communication device when an auxiliary service is requested. The particular set of reduced capabilities may depend on the specific type of auxiliary service that has been requested. Upon termination of the auxiliary services, the full capabilities list may be restored and the operation of the wireless communication device is thereafter controlled by the full set of operational capabilities.