Short Range Radio Devices Frequency Slot Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional short range radio communication methods between multiple devices often result in interference due to independent frequency slot allocation, preventing stable communication among multiple devices using the same frequency band.
Innovation Solution
A communication method where multiple devices share link information, create and broadcast frequency slot allocation information, and agree on specific allocation to avoid interference, using a frequency hopping scheme to equally distribute frequency slots and handle interference from heterogeneous devices by determining and mitigating wide or narrow band interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple devices independently make communication using the same frequency band, then each device can establish its own communication link, but interference occurs between the communications
Solution Approach 1:
The frequency band is segmented into multiple frequency slots, and each device is allocated specific slots to use. This segmentation allows multiple devices to communicate independently in the same frequency band without interference, as each device operates in its designated time-frequency slots.
Solution Approach 2:
Frequency slot allocation information is created and broadcast in advance before actual communication occurs. Devices agree on the allocation of frequency slots beforehand, which prevents interference during subsequent independent communications by ensuring each device knows which slots to use and when.
2Object-affected harmful factors
If devices use frequency hopping scheme, then radio wave interference with other systems is avoided, but synchronization between devices becomes critical
Solution Approach 1:
The master device creates frequency slot allocation information before communication begins and broadcasts it to slave devices. This preliminary allocation ensures that all devices are synchronized with the frequency hopping pattern from the start, maintaining communication stability while avoiding interference with other systems.
Solution Approach 2:
Slave devices receive and acknowledge the frequency slot allocation information from the master device. This feedback mechanism ensures that all devices are properly synchronized with the frequency hopping scheme, maintaining reliable communication while avoiding interference with other systems.
3Ease of operation
If frequency slots are allocated without coordination, then devices can operate independently, but communication stability deteriorates due to interference
Solution Approach 1:
Frequency slot allocation is performed in advance by the master device and communicated to all slave devices before independent operation begins. This preliminary coordination allows devices to operate independently during communication while maintaining stability, as each device knows its allocated slots and when to use them.
Data Source
AI summary
A communication method between short range radio communication devices includes sharing multiple pieces of link information of multiple devices by the multiple devices making communication with each other through a frequency hopping scheme under a short range radio communication environment, such that the multiple devices communicate with each other without interference with each other even if mutually independently making communication, creating, by the multiple devices, multiple pieces of frequency slot allocation information based on the multiple pieces of link information and broadcasting the multiple pieces of created frequency slot allocation information, and making, by the multiple devices, first communication based on specific frequency slot allocation information among multiple pieces of received frequency slot allocation information.