Probabilistic Resource Block Allocation for Interference Control
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Solution Overview
Problem
Current intercell interference coordination technologies face challenges in effectively utilizing remaining resource blocks between adjacent cells, leading to severe interference or resource wastage, as they either allocate fixed orthogonal frequencies or dynamically adjust based on traffic intensity without optimal resource management.
Innovation Solution
A method and device that receive information on edge frequency band resource blocks from adjacent cells, acquire information on remaining available resource blocks, and utilize them based on a set probability, thereby controlling interference and optimizing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If adjacent cells both occupy the remaining RBs between them completely, then resource utilization is improved, but severe intercell interference is caused
Solution Approach 1:
The patent changes the parameter of resource block allocation from deterministic (static or dynamic coordination) to probabilistic. Each cell randomly selects resource blocks from the remaining RBs with a certain probability, transforming the allocation strategy to balance resource utilization and interference avoidance. This probabilistic approach allows cells to occasionally use remaining RBs without guaranteed conflicts, improving overall resource utilization while preventing severe persistent interference.
Solution Approach 2:
The patent introduces dynamic randomness in resource block allocation. Instead of fixed patterns, the allocation adapts dynamically through random selection in each scheduling interval. This dynamic behavior allows the system to explore different allocation patterns over time, preventing persistent interference while maximizing resource utilization opportunities.
2Object-affected harmful factors
If neither of the adjacent cells occupies the remaining RBs between them, then intercell interference is reduced, but a waste of resources is caused
Solution Approach 1:
The patent changes the allocation parameter from binary (allocate or not) to probabilistic (allocate with probability p). This allows the system to partially utilize remaining RBs by allocating them with a controlled probability, thereby reducing resource waste while maintaining acceptable interference levels through the randomness of the allocation process.
Solution Approach 2:
The patent applies partial action by allocating remaining RBs with a probability less than 100%. This partial utilization strategy ensures that some resource blocks are used (reducing waste) while others are intentionally left unused (maintaining low interference), achieving a balanced compromise between the two opposing goals.
3Object-affected harmful factors
If intercell static coordination is used, then intercell interference is reduced through orthogonal frequency allocation, but resource utilization is limited due to RB margin
Solution Approach 1:
The patent replaces static coordination with dynamic probabilistic allocation. Instead of maintaining fixed RB margins that limit utilization, the system dynamically decides in each scheduling interval whether to allocate remaining RBs based on random selection. This dynamic approach eliminates the need for permanent margins while controlling interference through probability-based decisions.
Solution Approach 2:
The patent enables cells to autonomously select their resource block allocations independently through random selection, rather than relying on centralized coordination. Each cell self-determines its allocation from the remaining RBs, simplifying the coordination mechanism while achieving both interference control and improved resource utilization through the statistical properties of random selection.
4Productivity
If intercell dynamic coordination is used, then resource utilization is improved by expanding frequency band, but severe interference occurs when both cells occupy remaining RBs
Solution Approach 1:
The patent modifies the coordination mechanism from deterministic dynamic adjustment to probabilistic allocation. Instead of cells deterministically expanding their frequency bands based on traffic conditions, the system uses random selection with probability to allocate remaining RBs. This changes the nature of resource allocation to be less predictable and less prone to simultaneous conflicts, maintaining high utilization while reducing severe interference events.
Data Source
AI summary
Embodiments of the present invention disclose a method, a device and a base station for utilizing cell edge frequency band resources, and are related to the field of mobile communications. The method includes: receiving a message transmitted from another cell, wherein the message is used for indicating information of an edge frequency band resource block used by the another cell; acquiring information of a remaining available resource block; and according to the acquired information of the remaining available resource block, utilizing the remaining available resource block according to a set probability that a current cell utilizes each remaining available resource block.