Guard Interval Linkage for Wireless Signal Transmission
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Solution Overview
Problem
The increasing demand for wireless network services strains communication resources and battery life in user equipment (UE) due to insufficient mitigation of inter-symbol interference (ISI), leading to data recovery errors and increased latencies.
Innovation Solution
A method where a UE receives an indication of a relationship between a first signal and a second signal based on a guard interval (GI) linkage, allowing it to reuse a GI duration and delay spread estimation, thereby reducing processing and resource consumption by deriving the GI duration from the delay spread or vice versa.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE performs separate delay spread estimation and GI duration determination for each signal, then the accuracy of ISI mitigation is improved, but the processing load and battery consumption increase
Solution Approach 1:
The patent applies universality by enabling a single delay spread estimation from a first signal to serve multiple functions: determining the GI duration for the first signal and also serving as the basis for determining the GI duration for a second signal. This multi-functional approach eliminates redundant processing while maintaining accurate ISI mitigation for both signals, thereby resolving the contradiction between reliability and energy consumption.
Solution Approach 2:
The patent merges the delay spread estimation process with the GI duration determination process by establishing that the GI duration is derived from the delay spread estimation. This merging reduces the number of separate processing operations required for each signal, lowering overall processing load and battery consumption while maintaining the reliability of ISI mitigation through the unified estimation approach.
2Reliability
If the UE performs separate delay spread estimation and GI duration determination for each signal, then the accuracy of ISI mitigation is improved, but the processing time and data-transfer latency increase
Solution Approach 1:
The patent applies preliminary action by performing the delay spread estimation for the first signal in advance, and then reusing this estimation to determine the GI duration for the second signal without performing a separate delay spread estimation. This preliminary estimation serves multiple purposes and eliminates redundant processing steps, thereby reducing overall processing time and data-transfer latency while maintaining accurate ISI mitigation.
Solution Approach 2:
The patent combines the GI duration determination for the second signal with the delay spread estimation from the first signal, eliminating the need for separate processing operations. This merging reduces the total processing time required for signal configuration and thereby decreases data-transfer latency while maintaining the reliability of ISI mitigation through the shared estimation approach.
3Manufacturing precision
If the UE determines GI duration separately for each signal, then the transmission configuration accuracy is improved, but the device complexity and processing requirements increase
Solution Approach 1:
The patent applies universality by designing a system where the delay spread estimation from the first signal serves multiple functions: it determines the GI duration for the first signal and also provides the basis for determining the GI duration for the second signal. This multi-functional approach reduces processing complexity while maintaining accurate transmission configuration for both signals through a unified estimation framework.
Solution Approach 2:
The patent changes the parameter relationship by establishing that the GI duration is derived from the delay spread estimation rather than being independently determined for each signal. This parameter change simplifies the processing requirements by reducing the number of independent calculations needed, while maintaining transmission configuration accuracy through the established relationship between delay spread and GI duration.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a relationship between a first signal and a second signal. The UE may communicate with a wireless communication device based at least in part on using a first transmission configuration for the first signal, the first transmission configuration specifying that the first signal includes a guard interval that spans a duration and is based at least in part on a delay spread of the first signal. The UE may communicate with the wireless communication device based at least in part on using a second transmission configuration for the second signal, the second transmission configuration specifying that the second signal includes the guard interval based at least in part on the indication of the relationship. Numerous other aspects are described.