Uplink Resource Slot Allocation for Inter-Sector Interference
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Solution Overview
Problem
Current cellular communication systems, particularly those using the 802.16e standard, lack an efficient and adaptable method for distributing uplink communication resources across sectors in a sectored cell configuration, leading to significant inter-sector interference and inefficient resource allocation.
Innovation Solution
A method is introduced where a two-dimensional set of communication resource slots is divided into groups of equal numbers and allocated to different sectors, ensuring each sector receives an equal number of slots, with any remaining slots allocated adaptively based on operational conditions and system requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If uplink communication resources are distributed across sectors in a sectored cell configuration, then resource allocation efficiency is improved, but inter-sector interference increases
Solution Approach 1:
The two-dimensional set of communication resource slots is divided into multiple groups, where each group is allocated to a specific sector. This segmentation approach ensures that resources are efficiently distributed across sectors while minimizing inter-sector interference by dedicating specific resource groups to specific sectors.
Solution Approach 2:
Different resource groups are assigned to different sectors based on local conditions and requirements. Each sector receives resource groups that are optimized for its specific operational context, allowing for efficient local resource utilization while maintaining overall system coordination.
2Ease of operation
If communication resource slots are divided equally among sectors, then fairness in resource distribution is improved, but adaptability to varying load conditions deteriorates
Solution Approach 1:
The system dynamically adjusts resource allocation based on sector load conditions. While maintaining an equal division framework for fairness, the allocation mechanism can adaptively redistribute resources in response to varying traffic demands, ensuring both fairness and adaptability to changing operational conditions.
Solution Approach 2:
The resource allocation parameters are made adjustable based on system conditions. The equal division principle provides a baseline for fairness, but parameters can be modified to accommodate varying load conditions, allowing the system to transition between fair distribution and adaptive allocation as needed.
3Productivity
If a two-dimensional set of communication resource slots is divided into groups, then resource distribution efficiency is improved, but system complexity increases
Solution Approach 1:
The two-dimensional resource slot set is segmented into manageable groups that can be independently allocated to sectors. This segmentation improves distribution efficiency by organizing resources in a structured manner while keeping the complexity of individual group management tractable.
Solution Approach 2:
The resource allocation is organized in a two-dimensional structure that can be systematically divided into groups. By leveraging this dimensional structure, the system achieves efficient resource distribution through regular patterns of grouping and allocation, reducing the complexity compared to arbitrary resource assignment.
Data Source
AI summary
A method (700) of operation in a cellular communication system including at least one base station and, associated with the at least one base station, a plurality of user terminals in sectors to allow separate communications between the base station and the user terminals in different sectors, the method including providing (701, 703) a set of communication resource slots for distribution to the sectors for use in sending uplink traffic data, dividing (705, 707) at least part of the set into groups of slots having equal numbers of resource slots and allocating (709, 711) the groups of slots to the different sectors. A system, a base station and a mobile station operable using the method are also described.