TDD Time Slot Control for Local Network Interference
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Solution Overview
Problem
In a multi-network environment with coexisting carrier networks and local networks, there is a challenge in preventing interference between networks, particularly when local networks operate flexibly without synchronizing uplink and downlink transmission timings with carrier networks.
Innovation Solution
A control method is implemented where base stations in local networks adjust their TDD time slot usage based on predetermined conditions, ensuring that only time slots with coinciding communication directions between different TDD patterns are used, thereby minimizing interference with carrier networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a local network operates flexibly without synchronizing uplink and downlink transmission timings with a carrier network, then the adaptability of the local network is improved, but interference with the carrier network increases
Solution Approach 1:
The patent applies local quality by allowing different base stations in the local network to use different TDD patterns (first pattern or second pattern) based on their specific conditions. Base stations that may cause interference to carrier networks use the first pattern synchronized with carrier network timing, while base stations that do not cause interference can use the second pattern for flexible operation. This localized differentiation resolves the contradiction by enabling flexible operation where possible while preventing interference where necessary.
Solution Approach 2:
The patent implements dynamics by enabling base stations to dynamically select between two TDD patterns based on operational conditions. The system can adaptively switch between synchronization with carrier network timing (first pattern) and flexible independent timing (second pattern), allowing the local network to optimize its operation while preventing interference when carrier network communication occurs.
2Object-affected harmful factors
If a local network synchronizes with a carrier network to suppress interference, then interference suppression is improved, but the flexibility of local network operation deteriorates
Solution Approach 1:
The patent applies local quality by allowing different base stations in the local network to use different TDD patterns (first pattern or second pattern) based on their specific conditions. Base stations that may cause interference to carrier networks use the first pattern synchronized with carrier network timing, while base stations that do not cause interference can use the second pattern for flexible operation. This localized differentiation resolves the contradiction by enabling flexible operation where possible while preventing interference where necessary.
Solution Approach 2:
The patent implements dynamics by enabling base stations to dynamically select between two TDD patterns based on operational conditions. The system can adaptively switch between synchronization with carrier network timing (first pattern) and flexible independent timing (second pattern), allowing the local network to optimize its operation while preventing interference when carrier network communication occurs.
3Productivity
If a base station in a local network uses time slots where communication directions do not coincide with carrier network patterns, then communication efficiency in the local network is improved, but interference with carrier network base stations increases
Solution Approach 1:
The patent applies local quality by allowing different base stations in the local network to use different TDD patterns (first pattern or second pattern) based on their specific conditions. Base stations that may cause interference to carrier networks use the first pattern synchronized with carrier network timing, while base stations that do not cause interference can use the second pattern for flexible operation. This localized differentiation resolves the contradiction by enabling flexible operation where possible while preventing interference where necessary.
Solution Approach 2:
The patent converts the potential harm of interference into benefit by using the knowledge of carrier network TDD patterns to enable flexible operation. Base stations identify time slots where they can operate flexibly without causing interference, and when interference would occur, they automatically switch to synchronized patterns. This transforms the constraint of carrier network coexistence into an opportunity for optimized local network operation.
Data Source
AI summary
In a case where, in a first network, a first pattern, in which each of time division duplex (TDD) time slots is assigned to uplink or downlink Which is a direction of communication between a base station and a terminal, is used and, in a second network that is different from the first network, the first pattern and a second pattern that is different from the first pattern in assignment of the direction of communication to the time slots can be used for communication by TDD between a base station and a terminal, a control apparatus controls, based on that a predetermined condition has been satisfied, a base station belonging to the second network so as to use time slots in which the direction of communication that has been assigned coincides between the first and the second patterns.