Fixed Resource Allocation in Wireless Networks
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Solution Overview
Problem
Conventional spectral resource allocation in multiple access wireless networks is inefficient, leading to varying network load and performance across partitions, especially with increasing data rates and user demands, as it relies on equal resource sharing among child user equipments, resulting in unfairness and reduced C/I levels.
Innovation Solution
Implementing a fixed allocation scheme where each child user equipment receives an equal number of resource units based on the estimated maximum number of user equipments per partition, with remaining resources allocated proportionally to high-gain user equipments, improving service levels and C/I ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If spectral resource is shared equally among all child user equipments in each partition, then implementation is simple and consistent, but resource allocation efficiency deteriorates when network load varies across partitions
Solution Approach 1:
The patent changes the allocation parameter from dynamic (conventional equal sharing based on current user count) to fixed (pre-determined allocation independent of current user count). This allows the system to maintain simplicity while improving efficiency by allocating resources based on maximum expected load rather than current load, ensuring adequate resources are always available.
2Ease of operation
If conventional equal resource sharing is used among child user equipments, then allocation is straightforward, but fairness deteriorates as network load varies significantly across partitions
Solution Approach 1:
The patent applies preliminary action by pre-determining the spectral resource allocation for each child user equipment based on the maximum expected number of users in their partition, before the actual network load is known. This ensures that each user receives a fair and adequate allocation regardless of how the actual load distributes across partitions.
3Productivity
If spectral resource is fully utilized in each partition, then resource usage efficiency is maximized, but C/I level deteriorates particularly for user equipments with lower gain links
Solution Approach 1:
The patent applies partial action by allocating spectral resources based on maximum expected load rather than attempting to fully utilize all resources in each partition. This leaves some resources unallocated in partitions with lower than maximum load, which improves the C/I ratio by reducing interference, while still ensuring adequate resources are available for users with lower gain links.
Data Source
AI summary
A scheme is provided for allocating spectral resource made up of a plurality of resource units in a multiple access wireless link linking a partition of a base station and at least one child user equipment of the partition in a wireless communications network. According to the scheme the same fixed allocation of resource units is made to each user equipment of the network. According to one embodiment a measure of a maximum likely number of child user equipments per partition of the network is determined. Then a fixed allocation of resource units based on the ratio of the number of resource units per unit time to the measure is calculated. Then the same fixed allocation of resource units is allocated to each child user equipment across the network. In one embodiment resource units which are not allocated in the fixed allocation remain unallocated to user equipments. In another embodiment the remaining resource units are allocated among the child user equipments by prioritizing user equipments having a high gain link. Also provided is a communications network and a resource allocation controller for a communications network which use the above scheme.