Converged Gateway Bandwidth Management for Hybrid Networks
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Solution Overview
Problem
Current network architectures face challenges in efficiently managing bandwidth across multiple radio access technologies and providing seamless communication between local devices and wide area networks, particularly in home and enterprise environments, while also supporting machine-to-machine networking and value-added services.
Innovation Solution
A Converged Gateway (CGW) architecture is introduced, which integrates bandwidth management (BWM) equipment within the network, utilizing a BWM server between the mobile core network and Home Node B, enabling efficient data segregation and sequence management across multiple radio access technologies, including 3GPP UMTS and IEEE 802.11, to facilitate seamless communication and mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a Converged Gateway architecture is implemented to manage bandwidth across multiple radio access technologies, then bandwidth utilization efficiency is improved, but device complexity increases
Solution Approach 1:
The gateway architecture is segmented into distinct functional modules including a control unit for bandwidth management decisions, a packet inspection unit for analyzing data flows, and separate interfaces for different radio access technologies. This modular segmentation allows independent optimization of each component while maintaining overall system efficiency.
Solution Approach 2:
The patent introduces a bandwidth management server as an intermediary component that mediates between multiple radio access technologies and the core network. This intermediary handles the complex bandwidth allocation and policy enforcement, simplifying the architecture by centralizing management functions rather than distributing complexity across multiple points.
2Productivity
If bandwidth management equipment is integrated within the network to segregate data across multiple RATs, then data transmission efficiency is improved, but network complexity increases
Solution Approach 1:
The patent merges the bandwidth management functionality with existing network gateway infrastructure, combining packet routing, bandwidth control, and multi-RAT interface management into a unified converged gateway. This merging reduces network complexity by eliminating the need for separate dedicated bandwidth management devices while maintaining data transmission efficiency.
Solution Approach 2:
The converged gateway is designed with multi-functional capabilities to handle diverse data flows across different radio access technologies simultaneously. It provides universal bandwidth management policies that apply across UMTS, LTE, and other RATs, reducing network complexity by using a single multi-functional device rather than multiple specialized devices.
3Reliability
If sequence numbers are tracked for data packets transmitted over multiple RATs to maintain proper sequencing, then communication reliability is improved, but processing overhead increases
Solution Approach 1:
The gateway performs preliminary sequencing operations by assigning sequence numbers to data packets at the point of transmission across different radio access technologies. This preliminary action ensures proper ordering is established early in the transmission process, reducing the need for complex reordering operations at the receiving end and lowering overall processing complexity.
Solution Approach 2:
The system implements feedback mechanisms where the gateway monitors the reception status of sequenced packets and adjusts its sequencing and retransmission strategies accordingly. This feedback-driven approach improves sequencing reliability by detecting and correcting out-of-order delivery issues while maintaining efficient processing through adaptive rather than purely deterministic methods.
Data Source
AI summary
Systems and methods for integrating bandwidth management (BWM) equipment into a network in order to manage the use of bandwidth over multiple radio access technologies (RATs) relating to communications between a wireless transmit receive unit and a mobile core network (MCN). When integrating itself into the network, a BWM server may be placed between a MCN and an femto access point. In order for WTRUs to communicate with the MCN through the femto access point and a BWM server, a BWM server may need deep packet inspection capabilities.