Coordinated Cell Base Station Over-the-Air Provisioning
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Solution Overview
Problem
Current Femtocell systems face challenges in deployment and maintenance due to lack of operator provisioning, limited handover capabilities, interference management, security, registration, authentication, scheduling, and Quality of Service (QoS) issues, as well as inadequate over-the-air communications between Femtocells and macro cells.
Innovation Solution
A coordinated wireless communication system that enables communication between base stations with smaller coverage areas (coordinated cell BTSs) and those with larger coverage areas (macro cell BTSs) via wireless air-interfaces, using an over-the-air communications unit with a wireless transceiver and auxiliary receiver for interference management and QoS coordination, allowing for database updates and parameter adjustments to optimize network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If Femtocell systems operate as consumer devices without operator provisioning, then deployment is simpler and cost is reduced, but deployment and maintenance become difficult and not cost effective
Solution Approach 1:
The Femtocell system performs self-provisioning by automatically discovering neighboring cells and configuring itself without requiring manual operator intervention. The system autonomously manages registration, authentication, and network configuration through automated protocols with macro cells and other Femtocells.
Solution Approach 2:
The system performs preliminary actions by pre-configuring discovery and registration protocols that enable automatic setup upon deployment. The automated discovery process proactively identifies neighboring cells and establishes connections before full operation begins, eliminating the need for manual provisioning.
2Device complexity
If Femtocells communicate only through broadband backhaul, then infrastructure complexity is reduced, but handover capabilities and real-time coordination with macro cells are limited
Solution Approach 1:
The air interface in Femtocells is designed to serve multiple functions: it enables not only broadband backhaul communication but also direct over-the-air coordination with macro cells and other Femtocells. This multi-functional air interface supports discovery, registration, handover, and real-time coordination operations.
Solution Approach 2:
The system adds a new communication dimension by enabling direct over-the-air wireless communication between Femtocells and macro cells, in addition to the traditional broadband backhaul path. This dual-path architecture provides both infrastructure-based and wireless coordination capabilities.
3Device complexity
If no over-the-air communications exist between Femtocells and macro cells, then system simplicity is maintained, but interference management, security, and QoS coordination are insufficient
Solution Approach 1:
The system implements feedback mechanisms where Femtocells report their status, interference levels, and QoS parameters to macro cells over the air interface. This feedback enables real-time interference management, security monitoring, and QoS coordination through automated adjustments in transmission parameters.
Data Source
AI summary
In wireless system, a group of Base station (BTSs) with smaller footprints have the capability to communicate with each other as well as with the BTSs with relatively larger footprints via wireless air-interfaces. One of such example is coordinated cell systems. A coordinated cell system comprises a group of coordinated cell base stations that have the capability to communicate with each other as well as with relevant macro cell or Pico cell base stations via wireless air-interfaces. Each coordinated cell BTS consists of an over the air control unit in addition to the conventional coordinated cell BTS system. A set of protocols in the form of messages and database are also defined to enable the networking capability. This enables enhancement in performing a variety of tasks by coordinated cell systems, including interference management and coordination, registration and authentication, quality of service coordination, installation and maintenance, location services, etc.