Multicast Polling With Staggered Response Delays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing use of wireless devices leads to network congestion and inefficiencies in traditional communication protocols, particularly due to polling techniques that consume significant bandwidth and cause interference among multiple devices trying to transmit simultaneously.
Innovation Solution
Implementing a multicast polling method where a base station polls multiple mobile devices with a single transmission, specifying individual delay times for each device to respond, preventing simultaneous transmissions and optimizing channel usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional polling technique is used where base station polls multiple devices separately, then interference between devices is prevented, but bandwidth overhead increases significantly
Solution Approach 1:
The patent combines multiple separate poll transmissions into a single multicast poll transmission that addresses multiple devices simultaneously. This merging approach reduces the total number of transmissions required, thereby reducing bandwidth overhead while maintaining the ability to communicate with multiple devices efficiently.
Solution Approach 2:
The multicast poll transmission serves multiple functions: it polls multiple devices in a single transmission, reduces bandwidth consumption, and maintains communication reliability. This multi-functional approach allows the system to achieve both efficiency and reliability simultaneously.
2Loss of energy
If multiple devices are polled in the same poll to reduce overhead, then bandwidth efficiency improves, but devices may transmit simultaneously causing interference
Solution Approach 1:
The patent applies preliminary action by having devices calculate and prepare their backoff times before the actual transmission occurs. Each device determines its delay based on its position in the poll list, ensuring that transmissions are staggered in advance before any interference can occur. This pre-planned timing coordination prevents simultaneous transmissions.
Solution Approach 2:
The patent introduces dynamic timing adjustments where each device calculates its specific backoff time based on its individual position in the poll list. This dynamic approach allows devices to adapt their transmission timing automatically, ensuring that transmissions are spread out appropriately without requiring complex centralized scheduling.
3Device complexity
If separate polling is used for each device, then transmission coordination is simple, but channel utilization efficiency decreases
Solution Approach 1:
The patent changes the timing parameter dynamically based on each device's position in the poll list. By introducing a position-dependent backoff time parameter, the system achieves efficient channel utilization while maintaining relatively simple coordination logic. Each device only needs to know its position and calculate its delay, avoiding complex centralized scheduling.
Data Source
AI summary
A base station poll mobile devices with the same multicast poll, and the polled mobile stations may respond separately at different times based on an assigned delay period for each mobile station that was specified in the poll message.