Node B Access Mode Management for Wireless Interference Control
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Solution Overview
Problem
In conventional cellular communication systems, interference occurs between neighbor Node Bs (NBs) using different access modes on the same frequency, leading to deteriorated communication quality, and there is a need for dynamic load balancing, especially during events with increased communication demands.
Innovation Solution
A method and apparatus for managing Node B access modes in a wireless communication system, where the core network can request and control changes in access modes between Node Bs, allowing access mode changes from one mode to another (open, closed, or hybrid) based on interference and load distribution factors, enabling handovers and load balancing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an NB permanently sets a fixed access mode, then the configuration is simple and stable, but interference occurs between neighbor NBs using different access modes on the same frequency, deteriorating communication quality
Solution Approach 1:
The patent applies the dynamics principle by enabling access modes to change from fixed to dynamic. The access mode of an NB is no longer permanently set but can be changed based on real-time conditions such as load distribution and interference levels. The system includes mechanisms for requesting and executing access mode changes, allowing the NB to transition between different access modes (open, closed, hybrid) to optimize communication quality while managing complexity through controlled transitions rather than fixed configurations
Solution Approach 2:
The patent applies parameter changes by modifying the access mode parameter dynamically. Instead of a fixed access mode parameter, the system allows the access mode to change based on varying conditions. The core network can request access mode changes from closed to open or hybrid modes when load distribution or interference conditions require it, thereby improving communication quality while managing the complexity through structured parameter modification protocols
2Reliability
If the access mode is changed dynamically to reduce interference and balance load, then communication quality improves, but the system complexity and control overhead increase
Solution Approach 1:
The patent applies feedback by implementing mechanisms to monitor and respond to system conditions. The system monitors load distribution and interference levels, and based on this feedback, triggers appropriate access mode changes. The core network receives information about NB conditions and can request mode changes when feedback indicates poor communication quality or unbalanced load, thereby improving reliability while managing control complexity through condition-based triggers rather than continuous monitoring
Solution Approach 2:
The patent applies the intermediary principle by introducing the core network as a mediator between NBs and the access mode control system. Rather than NBs autonomously making complex decisions about mode changes, the core network acts as an intermediary that receives requests, evaluates conditions, and coordinates access mode transitions. This mediator approach reduces the complexity at individual NBs while maintaining system-wide optimization through centralized coordination
3Productivity
If access mode changes are implemented to manage load during peak events, then load distribution improves, but the system response time and setup complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring NBs with multiple access modes and pre-establishing the mechanisms for mode changes. The system is prepared in advance with the capability to execute access mode changes when needed, rather than reacting after problems occur. This allows the system to respond more quickly to peak events by having the infrastructure already in place, improving load distribution efficiency while reducing the perceived response time through pre-prepared configurations
Data Source
AI summary
An apparatus and a method for managing an access mode of an NB in a wireless communication system. The method includes receiving, from a first NB, a request to change the access mode of the second NB from a first mode into a second mode; determining, by the CN, to change the access mode of the second NB into the second mode; transmitting, to the second NB, a request message requesting to change the access mode of the second NB; and receiving, from the second NB, a response message informing of an access mode control result. If the first mode allows access only to terminals having a registration in the second NB, and the second mode allows access to terminals, the second NB further grants access to at least one terminal not registered in the second NB, after changing the access mode.