Host Redirector for Dynamic IP Addressing in Wireless Networks
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Solution Overview
Problem
Existing wireless data networks face limitations in dynamic addressing schemes, particularly with the General Packet Radio Service (GPRS) network, where network addresses are dynamically assigned, making it challenging to efficiently redirect user data items to mobile devices.
Innovation Solution
A system and method utilizing a redirector program that operates at a host system to continuously redirect data to a wireless packet data network, employing two methods for data communication: periodic contact with a store-and-forward server or a push bearer channel for static address allocation, allowing for transparent data replication and configuration of event triggers for user-defined data redirection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If dynamic addressing scheme is used in wireless data networks, then network address pool utilization is improved, but data redirection capability deteriorates
Solution Approach 1:
The patent introduces a redirector application as an intermediary component that mediates between the dynamic addressing scheme and data redirection requirements. The redirector maintains a mapping between mobile device identifiers and current IP addresses, enabling reliable data redirection despite dynamic address assignment. This intermediary layer resolves the contradiction by decoupling the addressing mechanism from the redirection logic.
2Reliability
If periodic contact with store-and-forward server is used, then data delivery reliability is improved, but network bandwidth consumption increases
Solution Approach 1:
The mobile device periodically contacts the store-and-forward server to check for redirected data. This periodic action ensures reliable data delivery by systematically retrieving messages while allowing the device to enter low-power states between contacts, thus balancing reliability with energy efficiency and bandwidth conservation.
3Productivity
If push bearer channel is used for address allocation, then data redirection efficiency is improved, but network capacity requirements increase
Solution Approach 1:
The patent employs a push bearer channel specifically for address allocation and control signaling, while main data traffic uses the regular data network. This local quality approach dedicates resources only where necessary for efficient redirection control, minimizing the impact on overall network capacity while maintaining high redirection efficiency.
Data Source
AI summary
A system and method for redirecting data from a host system (or messaging server) to one or more mobile data communication devices via a wireless packet data network is provided in which the wireless packet data network dynamically assigns addresses to the one or more mobile data communication devices on an as-needed basis. A redirector application operating at the host system is configured by each user to continuously redirect certain data to the wireless packet data network, as the data is received (or otherwise altered) at the host system. Two methods are provided for communicating the redirected data from the network to the mobile device. In a first method, the mobile device is configured to periodically contact a store-and-forward server within the wireless network, which, when contacted, assigns a network address to the mobile device and then transmits the stored, redirected data to the mobile device. In a second method, the network transmits a connection request command to the mobile device via a parallel voice network, or via a command channel, or other type of low-bandwidth data channel. The mobile device then contacts the data network and requests a network address so that the store-and-forward server can send the redirected data to the mobile device.