Boundary Block Group Counting for Accurate Loss Detection
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Solution Overview
Problem
Existing methods for determining block group loss in communication systems are inaccurate due to unreliable parity bit calculations at the receive end, leading to inconsistent bit error detection.
Innovation Solution
A method and apparatus for determining block group loss by receiving at least two block groups, identifying boundary block groups, and calculating the quantity of lost block groups based on receiving and target quantities, using overhead information and CRC checks to ensure accurate detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If parity bit calculation is used for error detection, then error detection capability is provided, but detection accuracy deteriorates due to inaccurate parity bit calculation at receive end
Solution Approach 1:
The patent introduces boundary block groups as intermediary elements that carry authoritative quantity information about first block groups. Instead of relying on inaccurate local parity bit calculations, the receive end uses these intermediary boundary markers to accurately determine quantities of transmitted and received block groups, thereby resolving the accuracy problem while maintaining error detection capability.
2Reliability
If block group loss determination is based on comparing receiving quantity with target quantity, then loss detection is enabled, but detection accuracy deteriorates due to inaccurate parity bit calculation
Solution Approach 1:
The transmit end performs preliminary action by embedding the target quantity of first block groups within boundary block groups before transmission. This allows the receive end to obtain accurate reference information in advance, enabling precise comparison with the receiving quantity and accurate determination of block group loss without relying on inaccurate parity bit calculations.
3Measurement precision
If boundary block groups are introduced to mark boundaries, then block group identification is improved, but system complexity increases
Solution Approach 1:
The boundary block groups serve multiple functions: they mark the boundaries of first block groups, carry the target quantity information, and enable both identification and loss determination. This multi-functionality reduces the need for separate mechanisms, thereby limiting the increase in system complexity while achieving accurate block group identification.
4Reliability
If the receive end counts received block groups between boundary block groups, then loss determination is enabled, but measurement accuracy deteriorates due to parity bit calculation errors
Solution Approach 1:
The patent implements feedback by having the transmit end embed the authoritative target quantity information in the boundary block groups. The receive end uses this feedback information to verify and correct its local counting results, thereby achieving accurate block group loss determination that overcomes the limitations of parity bit calculation errors.
Data Source
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AI summary
This application discloses a block group loss determining method and an apparatus. The method includes: A transmit end obtains at least two block groups, and sends the at least two block groups to a receive end. The receive end receives the at least two block groups, obtains a receiving quantity of first block groups between a first boundary block group and a second boundary block group in the at least two code groups, then obtains a target quantity of first block groups between the first boundary block group and the second boundary block group, and determines a quantity of lost block groups based on the receiving quantity and the target quantity. In embodiments of this application, when there is a discarded block group, a number of lost block groups can be accurately determined, and a line bit error rate can be obtained.