Wireless Group Communication Time Slotting to Prevent Interference

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Solution Overview

Problem

In multi-communication group systems, interference occurs between communication groups using the same wireless transmission method, leading to performance degradation due to in-band emission and near-far effects when frequency division multiplexing is employed, while time division multiplexing can effectively mitigate these issues.

Innovation Solution

Implementing time-division multiplexing (TDM) to ensure that different communication groups use distinct time-domain resources, preventing interference and enhancing communication performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple communication groups use the same wireless transmission method and carrier, then wireless communication flexibility is improved, but interference between communication groups occurs

Engineering Contradiction:

Improvewireless communication flexibilityVSAvoidinterference between communication groups

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent segments the time-domain resources by dividing them into distinct time slots, where each communication group is assigned to specific time slots. This segmentation allows multiple communication groups to share the same carrier frequency while using different time resources, thereby maintaining wireless flexibility while eliminating inter-group interference.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements periodic time-division multiplexing where communication groups transmit in alternating periodic time slots. Each group has designated periodic time windows for transmission, creating a structured rhythm of communication that prevents simultaneous transmissions and eliminates interference while maintaining systematic wireless communication.

Inventive Principle:

Principle #19Periodic action

2Object-affected harmful factors

If time-domain resources are differentiated for different communication groups, then interference between groups is reduced, but system complexity increases

Engineering Contradiction:

Improveinterference between communication groupsVSAvoidtime-resource allocation complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by pre-configuring and pre-allocating time-domain resources to different communication groups before actual communication occurs. The network device determines and assigns specific time slots to each group in advance, which simplifies the communication process during operation and reduces real-time decision complexity while effectively preventing interference.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12627454B2Communication method, apparatus and device and storage medium

Publication Date: 2026.05.12 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

The present application provides a communication method, apparatus and device and a storage medium. A first communication device determines a first time-domain resource used by a first communication group where the first communication device is located, and communicates with other communication devices in the first communication group by using the first time-domain resource. The first time-domain resource used by the first communication group is different from a second time-domain resource used by a second communication group, and the first communication group and the second communication group are any two of a plurality of communication groups coexisting in a target communication system.