Frequency Resource Positioning for TDD Guard Space Reduction
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Solution Overview
Problem
Current communication technologies face challenges in reducing frequency guard space between different operator networks using time division duplex (TDD) technology, leading to inefficiencies in spectral usage and increased interference.
Innovation Solution
A method and apparatus that enable autonomous synchronization between devices to configure frequency resources, allowing for the reduction of frequency guard space by adjusting synchronization relationships and configuring frequency resources close to the edge of frequency bands, thereby optimizing spectral efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If frequency guard space is increased to reduce interference between adjacent frequency bands, then interference protection is improved, but spectral efficiency deteriorates
Solution Approach 1:
The patent changes the synchronization state parameter between networks to achieve frequency resource coordination. By transitioning from asynchronous to synchronous operation, the system can dynamically adjust frequency guard space requirements, allowing smaller guard intervals when synchronization is maintained, thus improving spectral efficiency while controlling interference
Solution Approach 2:
The patent introduces dynamic adjustment of frequency guard space based on synchronization status. The frequency resource configuration is no longer static but adapts according to the synchronization state between different operator networks, enabling the system to optimize the balance between interference protection and spectral utilization
2Quantity of substance
If frequency guard space is reduced to improve spectral efficiency, then spectral efficiency is improved, but interference between frequency bands worsens
Solution Approach 1:
The patent introduces synchronization coordination as an intermediary mechanism between different operator networks. This intermediary enables the systems to operate closer in frequency without direct interference by maintaining synchronized timing, allowing reduced frequency guard space while preventing harmful interactions through coordinated operation
3Quantity of substance
If synchronization between different operator networks is implemented to reduce frequency guard space, then frequency resource utilization is improved, but system complexity worsens
Solution Approach 1:
The patent enables networks to perform self-synchronization by autonomously acquiring synchronization information from other operator networks and automatically adjusting their own frequency resource configurations. This self-service approach reduces the need for complex external coordination mechanisms while achieving frequency guard space reduction
Data Source
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AI summary
A method and an apparatus relate to the field of communications technologies, and are used to configure a position of a transmission frequency resource according to a synchronization relationship between devices, so as to reduce frequency guard space, thereby effectively increasing a frequency resource that can be used to transmit data. The method specifically includes: adjusting, by a first device, synchronization according to synchronization information of a second device, in a case in which the first device is synchronous with the second device, or the second device can adjust a configured frequency resource, configuring a frequency resource close to an edge of a frequency band, where the frequency resource is used to transmit data, and notifying first user equipment; in a case in which the devices are synchronous, adjusting, by the first device and the second device, a start moment or an end moment of transmitting or receiving a signal, thereby reducing residual interference between the devices; and using, by the first device in a manner of extending a bandwidth of a carrier frequency or a manner of carrier aggregation, saved frequency guard space after reconfiguration. The present invention is applicable to a wireless communications system that uses adjacent frequency bands.