Base Station Interference Information Transmission for Wireless Systems
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Solution Overview
Problem
The existing uplink interference coordination (ICIC) standard in 4G communication systems provides limited interference information, mainly 1- or 2-bit size, which does not accurately represent the uplink interference characteristics for each channel, resulting in limited capacity improvement for weak electric field terminals and entire cells.
Innovation Solution
The method involves a base station identifying available frequency resources for allocation, generating interference information indicative of the interference level for each frequency resource, and transmitting this information to adjacent base stations. This extended interference information includes specific values for data and control channels, allowing for more precise interference assessment and scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If extended interference information is transmitted for each frequency resource, then interference assessment accuracy is improved, but information transmission overhead increases
Solution Approach 1:
The interference information is segmented by frequency resources, with each frequency resource having its own interference level indication. This segmentation allows precise interference assessment for each resource while managing information overhead through structured organization of the segmented data.
Solution Approach 2:
The interference information format is changed from the conventional 1-2 bit limited format to an extended format that includes interference levels for multiple frequency resources. This parameter change enables more accurate interference representation while the structured format controls the information overhead.
2Manufacturing precision
If detailed interference information is provided for each channel, then scheduling accuracy is improved, but system complexity increases
Solution Approach 1:
The interference information is segmented by channel types (data channels and control channels), allowing separate interference assessment for each channel. This segmentation improves scheduling accuracy by channel-specific interference management while maintaining system manageability through structured segmentation.
3Measurement precision
If interference information is extended to cover all frequency resources, then resource allocation accuracy is improved, but processing overhead increases
Solution Approach 1:
The base station pre-identifies available frequency resources for allocation before generating interference information. This preliminary action allows the interference information to be generated only for relevant resources, improving resource allocation accuracy while reducing processing overhead by avoiding unnecessary calculations for unavailable resources.
Data Source
AI summary
The present disclosure relates to a communication technique for combining an IoT technology with a 5G communication system for supporting a higher data transmission rate than a 4G system, and a system therefor. The present disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail businesses, security and safety-related services, and the like) on the basis of 5G communication technologies and IoT-related technologies. The present invention discloses a method for a base station to transmit interference information in a wireless communication system, the interference information transmission method being characterized by including the steps of: determining whether a frequency resource can be used for resource allocation; generating interference information indicating the interference level of the frequency resource on the basis of the determination; and transmitting the interference information to an adjacent base station, wherein the interference information about the frequency resource has a predetermined value when the frequency resource is not used for resource allocation.