Early Termination of PPDU Transmission Signaling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional PPDU transmission in wireless communications lacks explicit signaling for early termination, leading to latency and inefficiencies, especially in coexistence with Bluetooth and input-dependent shaping encoding, as there is no clear signal to detect termination and hold the channel for the next frame.
Innovation Solution
The implementation of an early termination system that provides explicit signals at the termination time instance to ensure detection and hold the medium, allowing adaptive termination of PPDU transmission, reducing latency and buffer size by enabling transmission without waiting for all data to arrive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional PPDU transmission is used without explicit termination signaling, then the transmission structure remains simple, but latency increases and channel holding efficiency deteriorates
Solution Approach 1:
The PPDU transmission is segmented into controllable units where early termination can occur at defined boundaries. The termination indication signal acts as a segment delimiter that allows the transmitter to break the transmission sequence early without affecting the overall protocol structure, thus reducing latency while maintaining manageable complexity.
Solution Approach 2:
The duration indication field in the preamble is used to pre-announce the intended transmission duration before actual data transmission begins. This preliminary information allows receivers to prepare for early termination, and the termination indication signal leverages this pre-established framework to enable fast termination without requiring complex new signaling mechanisms.
2Productivity
If explicit termination signaling is added to PPDU transmission, then channel holding efficiency improves, but the complexity of the transmission protocol increases
Solution Approach 1:
The termination indication signal serves multiple functions simultaneously: it signals early termination, holds the channel for the transmitter, and provides a clear detection mechanism for receivers. By combining these functions into a single signal mechanism, the patent achieves improved channel holding efficiency without proportionally increasing protocol complexity.
Solution Approach 2:
The termination indication signal acts as an intermediary between the transmitter's need to terminate early and the receiver's need to detect termination and hold the channel. This intermediate signal resolves the coordination problem between transmitter and receiver, improving channel holding efficiency while adding only minimal protocol overhead.
3Loss of time
If the transmitter waits for all data to arrive before transmission, then data completeness is ensured, but latency increases and buffer size requirements grow
Solution Approach 1:
The preamble with duration indication is prepared in advance and transmitted before the complete data payload is ready. This preliminary action allows the transmission to start earlier, reducing latency. The early termination signal ensures that partial transmission is properly handled, maintaining reliability even when data arrives progressively rather than all at once.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A device may include processing circuitry that is configured to generate a transmission comprising one or more symbols; cause a transceiver to begin sending the transmission; and cause the transceiver to send an instruction representing an early termination of the transmission.