Offload List Decision for Heavily Loaded Base Stations
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Solution Overview
Problem
Heavily loaded base stations experience degraded connection quality due to insufficient load management solutions, which fail to reduce load effectively while maintaining high service level agreements (SLA) for users and avoiding overloading of other base stations.
Innovation Solution
An apparatus and method that selects candidate user equipment (UEs) with poor connection qualities for offloading, determining their offload utility values and SLA values to create an offload list, ensuring that UEs with lower SLA values are transferred to other base stations without overloading them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station controls its load by itself and decides whether to accept connection requests according to current traffic condition, then the base station load will not be increased, but the load cannot be reduced
Solution Approach 1:
The patent introduces a central server as an intermediary between base stations and mobile equipments. The central server collects load information from base stations, processes offload decisions based on SLA values and load conditions, and manages the offload list. This intermediary enables coordinated load reduction across the network while maintaining connection quality through centralized intelligent decision-making.
2Reliability
If mobile equipment determines transfer to another base station according to load information and signal strengths, then connection quality can be maintained, but different mobile equipments may be transferred to the same base station causing it to become heavily loaded
Solution Approach 1:
The patent implements a feedback mechanism where the central server continuously collects real-time load information from all base stations, processes offload decisions based on current network conditions and SLA values, and dynamically updates the offload list. This closed-loop feedback system ensures that load balancing decisions are made with complete network state information, preventing overload of any single base station while maintaining connection quality.
3Productivity
If conventional load balancing solutions are used without considering SLA values, then load can be distributed, but mobile equipment with higher SLA values may be disconnected or transferred resulting in lower user satisfaction
Solution Approach 1:
The patent applies local quality by treating mobile equipments with different SLA values differently in the offload decision process. The central server evaluates each mobile equipment's SLA value and makes customized offload decisions: high SLA value equipments are protected from offloading or transferred only to base stations with excellent conditions, while low SLA value equipments are more readily offloaded. This differentiated approach ensures load distribution while preserving service quality for premium users.
Data Source
AI summary
An apparatus and method for deciding an offload list for a heavily loaded base station are provided. The heavily loaded base station serves a plurality of user equipments. A part of the user equipments are candidate user equipments, wherein a connection quality parameter of each of the candidate user equipments is smaller than a threshold. Each of the candidate user equipments has an offload utility value and a service level agreement degree. The apparatus selects one of the candidate user equipments as a selected user equipment according to the offload utility values. The apparatus decides to add an identity of the selected user equipment into the offload list according to at least the service level agreement degree of the selected user equipment and a load of a target base station of the selected user equipment.