Access Network Device Indication for Interference Coordination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In communication systems using FDD and TDD modes, the flexible duplex technology often causes signal interference between access network devices due to the long time required for exchanging resource scheduling and allocation information, leading to inefficient interference coordination.
Innovation Solution
A communication method where access network devices send indication information within specific time segments to notify neighboring devices of their communication types, allowing for timely detection and avoidance of signal interference by proper resource scheduling and allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If flexible duplex technology is used to improve network resource utilization, then resource utilization is improved, but signal interference between access network devices occurs
Solution Approach 1:
The patent applies preliminary action by having access network devices send indication information in advance within a first time segment of a first subframe to notify neighboring devices of their communication types in a second subframe. This advance notification allows neighboring devices to proactively adjust their resource scheduling and allocation before interference occurs, resolving the contradiction between improving resource utilization through flexible duplex technology and avoiding signal interference between devices.
2Reliability
If resource scheduling information is exchanged between access network devices using existing methods, then interference coordination is achieved, but the time required for information exchange is too long
Solution Approach 1:
The patent implements preliminary action by requiring access network devices to send indication information containing communication type data in advance within a first time segment of a first subframe, before the actual communication occurs in the second subframe. This advance notification mechanism enables neighboring devices to perform resource scheduling adjustments proactively, significantly reducing the information exchange time compared to existing methods while maintaining reliable interference coordination.
3Reliability
If indication information is sent in advance to enable timely interference detection, then interference mitigation is improved, but network device complexity increases
Solution Approach 1:
The patent applies preliminary action by having access network devices send indication information in advance within a first time segment of a first subframe to notify neighboring devices of their communication types. This advance notification enables timely interference detection and mitigation while the complexity increase is minimized by using a straightforward indication mechanism that neighboring devices can process efficiently to adjust their resource scheduling.
Data Source
AI summary
A first access network device sends indication information to a second access network device within a first time segment of a first subframe. The first subframe includes a second time segment and the first time segment, the second time segment is used by the first access network device to communicate with a first terminal device, the indication information includes first information, and the first information indicates a communication type of the first access network device within a first target time segment of a second subframe. The first access network device further communicates with a second terminal device or the first terminal device based on a communication type indicated by the first information within the first target time segment. The second access network device can detect a signal interference status in time, and the second access network device can use an interference coordination technology in time.