Dynamic Channel Allocation for Video Streaming
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless networks face challenges in reliably transmitting high-bandwidth video streaming due to limited throughput and interference from multiple users, leading to poor quality audio/video experiences, especially in shared communication networks like LANs, WANs, and cellular networks.
Innovation Solution
The solution involves a wireless network system that allocates a secondary channel frequency set for video streaming, violating the traditional channel frequency reuse pattern to minimize interference, using directional antennas and dynamic power control based on received signal quality to ensure reliable transmission of streamed video to wireless terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional channel frequency reuse pattern is used for video streaming, then network interference is minimized, but video quality and throughput are degraded due to limited available channels
Solution Approach 1:
The patent applies dynamic channel assignment that adapts the channel frequency reuse pattern based on real-time terminal locations and signal quality conditions. The system dynamically switches between traditional reuse patterns and violated patterns depending on whether the terminal is in a high-interference or low-interference zone, thereby optimizing both video quality and throughput dynamically rather than using a static pattern.
Solution Approach 2:
The system changes the channel frequency allocation parameters based on terminal position and signal conditions. By modifying the channel reuse parameters dynamically - assigning different channel sets to different spatial zones - the system achieves better throughput in low-interference areas while maintaining quality in traditional coverage areas.
2Productivity
If channel frequency reuse pattern is violated to increase throughput, then available channels are increased, but interference with other network users increases
Solution Approach 1:
The patent implements local quality by treating different spatial zones differently. In zones with strong signal conditions and low interference, the system uses violated channel reuse patterns to maximize throughput. In zones with weak signals or high interference, it reverts to traditional patterns to minimize harmful effects. This localized approach optimizes throughput where safe and protects other users where needed.
Solution Approach 2:
The system dynamically adjusts channel assignment strategies based on real-time conditions. When a terminal moves into a zone with poor signal quality or where interference would be harmful, the system dynamically switches from violated reuse patterns to traditional patterns, thereby adapting the balance between throughput and interference mitigation.
3Reliability
If transmit power is increased to improve signal quality, then received signal strength is improved, but interference to other terminals increases
Solution Approach 1:
The system dynamically adjusts transmit power levels based on the assigned channel pattern and terminal location. When violated channel reuse patterns are used in low-interference zones, the system can use higher transmit power to maximize signal quality without causing excessive interference. When traditional patterns are used in high-interference zones, the system reduces transmit power to minimize harmful effects while maintaining adequate signal quality.
Solution Approach 2:
The patent changes transmit power parameters in coordination with channel assignment. By adjusting power levels as a variable parameter alongside channel selection, the system optimizes the trade-off between signal quality and interference generation, achieving better overall performance than either parameter alone could provide.
Data Source
AI summary
Transmitting streamed video to at least one wireless terminal by a wireless network having a channel frequency reuse pattern. The wireless network receives a request for the streamed video from the at least one wireless terminal and receives position information from the at least one wireless terminal requesting the streamed video. The wireless network selects a transceiving device to service transmission of the streamed video to the at least one wireless terminal. The transceiving device is allocated a first channel frequency set of the channel frequency reuse pattern. The wireless network or a component thereof selects a channel from a second channel frequency set that is different from the first channel frequency set. The transceiving device then, using a directional antenna, transmits the streamed video to the at least one wireless terminal in a direction based upon the position information using the selected channel.