Network Switch Routing IP Data in Distributed Antenna Systems
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Solution Overview
Problem
Wireless network operators face challenges in managing high data-traffic growth, particularly due to subscriber mobility and increased multimedia content demand, which can lead to unexpected capacity and throughput issues, especially during peak hours like lunchtime when many subscribers congregate in specific areas.
Innovation Solution
The implementation of a Distributed Antenna System (DAS) that utilizes microprocessors or digital components like Field Programmable Gate Arrays (FPGA) or Application Specific Integrated Circuits (ASIC) to efficiently route and multiplex IP data with mobile data streams, enabling efficient data transport between Base Transceiver Stations (BTS) and remotely located antennas, using network switches to manage traffic across multiple ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If network resources are sized for normal working hours subscriber loading, then network capacity is optimized for regular operation, but unexpected challenges arise during peak demand periods when subscribers congregate in specific areas
Solution Approach 1:
The patent implements dynamic resource allocation in DAS networks where IP data and mobile data share the same transport medium. The system dynamically adjusts bandwidth allocation between IP data traffic and mobile subscriber traffic based on real-time network conditions and subscriber distribution, allowing the network to adapt to peak demand periods when subscribers congregate in specific areas rather than being constrained by static resource sizing
Solution Approach 2:
The patent enables the transport medium to serve multiple functions by multiplexing both mobile data streams and IP data (for management, billing, and other network functions) over the same physical infrastructure. This multi-functional approach optimizes resource utilization and allows the network to handle varying traffic patterns efficiently without requiring separate dedicated channels for each data type
2Adaptability or versatility
If distributed antenna systems are deployed to address subscriber mobility and multimedia content demand, then network coverage and capacity are improved, but system complexity increases due to multiple ports and routing requirements
Solution Approach 1:
The patent combines IP data routing and mobile data transport functions into a unified DAS architecture. By merging the transport of management/IP traffic and subscriber mobile traffic over the same medium with intelligent multiplexing, the system reduces the number of separate components and interfaces needed, thereby lowering overall system complexity while maintaining extended coverage and adaptability
Solution Approach 2:
The patent introduces intelligent multiplexing and demultiplexing functions as intermediary processes that manage the sharing of the transport medium between IP data and mobile data. These intermediary functions coordinate traffic flow, allocate bandwidth, and handle routing decisions, enabling complex multi-port operations to be managed through standardized interfaces and procedures rather than requiring complex hardware configurations
Data Source
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AI summary
A system for transporting IP data in a Distributed Antenna System includes at least one Digital Access Units (DAU) having a plurality of optical input/output ports and at least one Ethernet port and a plurality of Digital Remote Units (DRUs) coupled to the at least one DAU. Each of the plurality of DRUs has a plurality of optical input/output ports and at least one Ethernet port. The at least one DAU includes a Framer/Deframer operable to separate cellular payload data from IP data and a network switch operable to buffer the cellular payload data and the IP data and to route the IP data received from the plurality of DRUs to the at least one Ethernet port of the DAU.