Wireless LAN Packet Capsulation for CODEC Synchronization
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Solution Overview
Problem
Conventional wireless LAN systems face inefficiencies in real-time communication due to large wireless LAN headers and short RTP packets, leading to suboptimal transmission rates and quality, especially when there is a mismatch between communication timing and CODEC periods.
Innovation Solution
A packet transmission method and system that sorts received packets into prioritized and non-prioritized packets, accumulates and capsulates the prioritized packets, and transmits them in synchronization with the CODEC period, ensuring efficient transmission and matching packet timing to enhance communication quality and capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless LAN headers are used for each short RTP packet, then packet transmission can be performed, but the original transmission rate cannot be utilized due to large header overhead
Solution Approach 1:
Multiple short RTP packets are merged into a single encapsulated packet structure, where multiple payload packets share common wireless LAN headers. This reduces the total header overhead significantly while maintaining the ability to transmit multiple packets efficiently over the wireless medium.
Solution Approach 2:
The encapsulated packet is segmented into multiple payload packets that can be independently processed and transmitted. Each payload packet maintains its own data integrity while sharing the common header structure, allowing efficient utilization of transmission rates.
2Productivity
If packets are transmitted without matching communication timing and CODEC period, then simple transmission can be performed, but efficient packet transmission cannot be achieved
Solution Approach 1:
The system employs periodic transmission intervals that are synchronized with the CODEC period. Packets are accumulated and transmitted at regular intervals that match the encoding period, ensuring efficient utilization of the wireless medium while maintaining synchronization with the real-time communication requirements.
Solution Approach 2:
Packets are accumulated in advance before transmission, allowing the system to prepare and synchronize multiple packets for simultaneous or sequential transmission. This preliminary accumulation phase enables timing synchronization without requiring complex real-time adjustments during transmission.
3Speed
If multiple terminals transmit packets simultaneously without arbitration, then transmission speed can be maintained, but packet collisions occur
Solution Approach 1:
The system uses feedback mechanisms where terminals receive timing information from the base station and adjust their transmission timing accordingly. This feedback loop enables coordinated transmission that maintains high speed while avoiding collisions through synchronized access to the wireless medium.
Solution Approach 2:
Transmission timing is made dynamic and adjustable based on real-time conditions. Terminals can adjust their transmission timing within allowed ranges to avoid collisions while maintaining efficient transmission rates, creating a flexible system that adapts to varying traffic conditions.
Data Source
AI summary
Disclosed herein is a packet transmission method wherein received packets are sorted into prioritized QoS packets and general packets other than the prioritized QoS packets, the sorted prioritized QoS packets are accumulated, the accumulated QoS packets are capsulated and then transmitted as a capsulated packet, and the capsulated packet is transmitted in matching with the period of a CODEC. In the preferred embodiment, there is provided a wireless LAN system comprising a base station and at least one wireless LAN terminal connected to said base station via a wireless LAN; and a packet transmission system for transmitting a packet between said base station and said at least one wireless LAN terminal via the wireless LAN, the packet transmission system. In the packet transmission system, a packet sorter sorts received packet into prioritized packets and packets other than the prioritized packets. A FIFO queue buffer (QoS queue) accumulates the sorted prioritized packets. A packet combiner capsulates the accumulated packets in the QoS queue. A wireless packet transmitter transmits the capsulated packet between the base station and the at least one wireless LAN.