Enterprise Mobile Network SIP Control for Indoor Capacity Expansion
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Solution Overview
Problem
Conventional wireless cellular networks face limitations in capacity expansion due to interference among macro base stations, and the deployment of micro or pico base stations requires additional infrastructure, is costly, and has limited coverage and capacity, especially in indoor environments where capacity demand is dynamic and often underutilized.
Innovation Solution
An enterprise mobile network using licensed radio frequency spectrum with a base station subsystem and mobile switching subsystem connected via an Internet Protocol network, incorporating a Session Initiation Protocol user agent to manage communication sessions between mobile devices and SIP servers, allowing for centralized management of multiple transceiver units and efficient distribution of capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If micro or pico base stations are deployed to expand network capacity, then wireless capacity is improved, but infrastructure requirements and deployment costs increase
Solution Approach 1:
The patent combines multiple transceiver units into a single pico base station platform, allowing shared processing resources, common backhaul connection, and unified control plane. This merging approach provides multi-user capacity equivalent to multiple stations while requiring only one physical deployment location, thereby improving wireless capacity without proportionally increasing infrastructure complexity
Solution Approach 2:
The pico base station is designed with universal functionality to serve multiple users and support various wireless protocols simultaneously. The single platform can dynamically allocate resources to different users based on demand, making it a multi-functional unit that replaces what would traditionally require multiple dedicated base stations, thus improving capacity while reducing infrastructure requirements
2Reliability
If pico base stations are deployed to provide indoor coverage, then wireless service is improved, but coverage area and capacity are limited
Solution Approach 1:
The system segments the coverage area into multiple virtual cells or sectors within the single pico base station, allowing each transceiver unit to serve a specific spatial region or user group. This segmentation enables the station to provide comprehensive indoor coverage by directing focused beams or channels to different zones, effectively expanding coverage area while maintaining reliable indoor service
3Area of stationary object
If multiple pico base stations are deployed to cover large areas, then coverage is improved, but co-channel interference increases and resource utilization decreases
Solution Approach 1:
By merging multiple transceiver units into a single coordinated platform, the system can implement centralized resource allocation and interference coordination algorithms. The unified control enables dynamic frequency assignment and power control across all transceivers, reducing co-channel interference while covering large areas, and improving resource utilization through shared backhaul connection
Data Source
AI summary
Support for Session Initiation Protocol (SIP) devices is provided in an enterprise mobile network that provides wireless service within a coverage area associated with an enterprise using licensed radio frequency spectrum. In various embodiments, support SIP devices is provided by, for example, incorporating SIP user agent in a mobile switching subsystem or in a base station subsystem or by incorporating SIP server functionality into a mobile switching subsystem.