Inter-cell interference coordination resource positioning
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Solution Overview
Problem
In heterogeneous wireless communication networks, existing inter-cell interference coordination (ICIC) methods struggle to clearly specify the resource position for ICIC operations when both time and frequency resource ICIC information are coexist, leading to inefficiencies in interference management.
Innovation Solution
The method determines whether frequency resource ICIC information is applied based on time resource ICIC information, allowing for precise specification of the resource position for ICIC operations, even when both time and frequency resource ICIC information are exchanged between cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both time and frequency resource ICIC information are exchanged between cells, then interference coordination coverage is improved, but resource position specification becomes unclear
Solution Approach 1:
The patent segments the ICIC information into two distinct types: time resource ICIC information (indicating silent subframes) and frequency resource ICIC information (indicating high interference frequency subdomains). By dividing the unified ICIC message into these separate components with clearly defined meanings, the patent resolves the ambiguity that occurs when both time and frequency resource information are exchanged simultaneously, allowing each type of information to be interpreted independently and accurately.
2Reliability
If frequency resource ICIC information is provided without time resource context, then frequency domain interference coordination is improved, but applicability to specific subframes becomes uncertain
Solution Approach 1:
The patent applies local quality by making the applicability of frequency resource ICIC information local to specific subframes through the time resource ICIC information. When a subframe is indicated as a silent subframe via time resource ICIC information, the frequency resource ICIC information becomes inapplicable to that specific subframe. This allows the system to maintain frequency domain interference coordination while adapting the applicability of frequency information to specific time locations, resolving the contradiction between frequency coordination effectiveness and subframe-specific adaptability.
Data Source
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AI summary
The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for performing inter-cell interference coordination in a wireless communication system. According to the present invention, a method is provided in which, when ICIC information exists both in a time resource and a frequency resource, the determination of whether or not to apply frequency resource ICIC information is carried out on the basis of time resource ICIC information in an ICIC-related cell, and the location of a resource to which ICIC is applied is accurately determined, to thereby enable an ICIC operation to be performed in an accurate and effective manner.