Network Node TDD Beam Coordination for Cross-Link Interference
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently measuring and avoiding cross-link interference (CLI) between base stations, particularly in dynamic and flexible time division duplexing (TDD) and sub-band full duplex (SBFD) operations, which affect communication efficiency and capacity.
Innovation Solution
A method and device for network nodes to exchange TDD configuration information and beam information with adjacent nodes, allowing for efficient CLI management by adjusting beam directions and reducing CLI measurement time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic/flexible TDD or SBFD operations are implemented to increase communication capacity, then data throughput is improved, but cross-link interference between base stations increases
Solution Approach 1:
The patent applies preliminary action by having base stations exchange TDD configuration information and beam information in advance before actual communication occurs. This allows base stations to pre-identify potential cross-link interference scenarios and configure appropriate beam directions and TDD patterns to avoid interference before it happens, enabling both dynamic TDD flexibility and interference mitigation
Solution Approach 2:
The patent uses beam information and TDD configuration information as intermediary elements that mediate between the need for dynamic resource allocation and the need to avoid cross-link interference. By exchanging these configuration parameters between adjacent base stations, the system can coordinate resource allocation to prevent interference while maintaining productivity
2Reliability
If CLI measurement is performed to avoid cross-link interference, then interference avoidance capability is improved, but measurement time increases
Solution Approach 1:
The patent applies preliminary action by exchanging TDD configuration information and beam information beforehand, which enables base stations to predict and avoid cross-link interference without performing time-consuming actual CLI measurements. This preliminary configuration exchange reduces the need for continuous measurement while maintaining reliable interference avoidance
Solution Approach 2:
The patent implements feedback by having adjacent base stations exchange their intended TDD configuration and beam information, allowing each base station to receive feedback about potential interference scenarios and adjust its configuration accordingly. This feedback mechanism enables interference avoidance without requiring extensive measurement time
Data Source
AI summary
Provided are a method for performing communication in a wireless communication system and a device for same. The method and device may be used to: transmit, to an adjacent network node, first intended time division duplex (TDD) configuration information about time division duplexed time period intervals including one or more downlink time intervals and one or more uplink time intervals; and receive second intended TDD configuration information including second beam information from the adjacent network, wherein the first intended TDD configuration information includes first beam information about a first time period interval among the time period intervals.