Smart Packet Filter Bi-casting for Wireless Handoff Interruptions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless telecommunications systems face service interruptions and data loss during handoff periods, particularly in high-speed data transmissions, which impact communication quality and limit data transmission speeds.
Innovation Solution
A method involving smart packet filters that apply different treatments to packet flows during handoffs between radio network controllers, enabling bi-casting of packet data streams across multiple radio technologies to minimize service interruptions and optimize packet handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hand off is performed between base stations or protocols to maintain communication continuity, then the user can maintain connectivity while moving or switching protocols, but data loss occurs during the hand off period which impacts communication quality and limits data transmission speed
Solution Approach 1:
The system performs preliminary actions by duplicating packet flows before the handoff occurs and pre-processing them through different treatments. The network controller creates duplicate packet streams and applies different treatments (such as different protocol encapsulations or routing paths) in advance, so that when handoff is needed, the access terminal already has multiple prepared packet streams to choose from, eliminating the data loss that would normally occur during the switch.
Solution Approach 2:
The system changes parameters by applying different treatments to duplicate packet flows. These treatments may involve modifying protocol parameters, routing parameters, or transmission parameters. The network controller dynamically adjusts these parameters based on the handoff situation, allowing the access terminal to receive optimally treated packets during the transition period, thereby maintaining communication quality while switching between base stations or protocols.
2Productivity
If traditional single treatment packet flow is used during hand off, then system complexity remains low, but service interruptions occur and data transmission speed is limited
Solution Approach 1:
The system segments the packet flow into multiple duplicate streams, each undergoing different treatments. Instead of handling a single packet flow, the network controller divides it into separate streams that can be processed independently through different treatments (such as different protocol encapsulations or quality of service configurations). This segmentation allows parallel processing of multiple packet streams, improving data transmission speed while the modular nature of the segmentation keeps the added complexity manageable.
Solution Approach 2:
The network controller is designed with multi-functionality to handle multiple packet treatments simultaneously. It can apply different treatments (protocol conversion, routing, quality of service marking) to different duplicate packet streams using the same infrastructure. This universality allows the system to improve productivity through multiple treated packet flows without proportionally increasing device complexity, as the same controller performs multiple functions.
Data Source
AI summary
A method is provided for controlling communications to and from an access terminal during a hand off period. A smart packet filter is used to identify a packet flow, apply a first treatment to a packet flow based on its destination, and transmit the first treated packet flow along a first route to the access terminal. During a hand off, the packet stream is duplicated, a second treatment is applied to the packet flow and the second treated duplicate packet flow is transmitted to the access terminal via a second route.