Wireless Receiver Estimating Transmission End Time

Solution Overview

Problem

In wireless communication systems, decoding latency causes receivers to miss data packets due to delayed detection of subsequent packets, leading to increased hardware costs and power consumption when attempting to shorten decoding latency with faster computation circuits.

Innovation Solution

A wireless receiving system comprising a decoding module, an estimating module, and a searching module that estimates the transmission end time of packets based on packet length information to determine an early search start time, allowing for timely detection of subsequent packets without requiring faster computation speeds.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a circuit with faster computation speed is used to shorten decoding latency, then packet detection accuracy is improved, but hardware cost and power consumption increase significantly

Engineering Contradiction:

Improvepacket detection accuracyVSAvoidhardware cost

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The estimating module performs preliminary estimation of the transmission end time before the decoding module completes full decoding. By retrieving packet length information from the decoding result and estimating the transmission end time in advance, the system can determine the search start time for the next packet without waiting for complete decoding, thus avoiding packet loss without requiring faster computation circuits

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The estimating module acts as an intermediary between the decoding module and the searching module. It retrieves packet length information from the decoding result and uses this intermediate information to estimate the transmission end time, enabling the searching module to start packet searching at the appropriate time without waiting for complete decoding, thereby solving the packet loss problem caused by decoding latency

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a circuit with faster computation speed is used to shorten decoding latency, then packet detection accuracy is improved, but power consumption increases

Engineering Contradiction:

Improvepacket detection accuracyVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The estimating module performs preliminary estimation of the transmission end time before the decoding module completes full decoding. By retrieving packet length information from the decoding result and estimating the transmission end time in advance, the system can determine the search start time for the next packet without waiting for complete decoding, thus avoiding packet loss without requiring faster computation circuits

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The estimating module acts as an intermediary between the decoding module and the searching module. It retrieves packet length information from the decoding result and uses this intermediate information to estimate the transmission end time, enabling the searching module to start packet searching at the appropriate time without waiting for complete decoding, thereby solving the packet loss problem caused by decoding latency

Inventive Principle:

Principle #24Intermediary (Mediator)

3Measurement precision

If the receiver waits for decoding completion before searching for the next packet, then decoding accuracy is maintained, but packets may be missed due to decoding latency

Engineering Contradiction:

Improvedecoding accuracyVSAvoidpacket reception completeness

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The estimating module performs preliminary estimation of the transmission end time before the decoding module completes full decoding. By retrieving packet length information from the decoding result and estimating the transmission end time in advance, the system can determine the search start time for the next packet without waiting for complete decoding, thus avoiding packet loss without requiring faster computation circuits

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The estimating module acts as an intermediary between the decoding module and the searching module. It retrieves packet length information from the decoding result and uses this intermediate information to estimate the transmission end time, enabling the searching module to start packet searching at the appropriate time without waiting for complete decoding, thereby solving the packet loss problem caused by decoding latency

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS9369400B2Wireless receiving system and signal processing method thereof

Publication Date: 2016.06.14 MEDIATEK INC

AI summary

A wireless system including a decoding module, an estimating module and a searching module is provided. The decoding module receives and decodes a packet to generate a decoding result. The estimating module retrieves package length information from the decoding result, and estimates a transmission end time of the packet according to the packet length information. The searching module determines a search start time according to the transmission end time, and starts packet searching at the search start time.