Multi-Frame ACK Negotiation for Low-Overhead BeiDou Transmission
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Solution Overview
Problem
In the BeiDou satellite communication system, the limited air interface resources prevent the negotiation of acknowledgment modes between the transmit and receive ends through complex control signaling interaction, leading to inefficiencies in data transmission.
Innovation Solution
A multi-frame integrated transmission method that allows the transmit end to negotiate an acknowledgment mode with the receive end using total frame quantity and frame sequence number fields in the frame header information, eliminating the need for additional frame header and control signaling overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If complex control signaling interaction is used to negotiate acknowledgment modes between transmit and receive ends, then the acknowledgment mode negotiation can be completed, but the air interface resources are consumed excessively
Solution Approach 1:
The patent merges the acknowledgment mode negotiation function into the existing data transmission frame structure by utilizing the Total Frame Quantity field and Frame Sequence Number field. Instead of using separate control signaling interactions, the negotiation is combined with the data frame itself, allowing the transmit end to indicate the desired acknowledgment mode (stop-and-wait or parallel mode) within the data frame headers, thereby consuming no additional air interface resources.
2Adaptability or versatility
If additional frame header fields are added for acknowledgment mode negotiation, then the negotiation capability is enhanced, but the frame header overhead increases
Solution Approach 1:
The patent makes the existing Total Frame Quantity field and Frame Sequence Number field serve multiple functions: their original function of identifying frame positions in segmented data is retained, and they additionally serve to indicate the desired acknowledgment mode. By setting specific values or combinations of these fields, the transmit end can signal whether it wants stop-and-wait or parallel acknowledgment mode, eliminating the need for dedicated negotiation fields.
3Productivity
If multiple data frames are sent simultaneously in parallel mode, then the transmission efficiency is improved, but the complexity of managing multiple frames increases
Solution Approach 1:
The patent implements a feedback mechanism where the receive end sends acknowledgment frames that indicate which data frames have been successfully received and which are missing. The acknowledgment frame includes information about the reception status of multiple data frames, allowing the transmit end to identify and retransmit only the missing frames, thereby managing parallel frame transmission efficiently without excessive complexity.
Data Source
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AI summary
This application relates to the field of satellite communication, and discloses a multi-frame integrated transmission method in a BeiDou communication system and a related apparatus. Therefore, in the BeiDou communication system, a transmit end may negotiate an acknowledgment mode with a receive end based on a total frame quantity field and a frame sequence number field in frame header information of a data frame. In this way, when the transmit end negotiates the acknowledgment mode with the receive end, additional frame header cell overheads and control signaling overheads may not be required.