Method and system for maintaining processing continuity to mobile computers in a wireless network

• US 5,564,070 A
• Filed: 07/30/1993
• Issued: 10/08/1996
• Est. Priority Date: 07/30/1993
• Status: Expired due to Term

• Current Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Original Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Inventors: Want, Roy, Adams, Norman I., Goldstein, Richard J., Schilit, William N., Tso, Michael M.
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): Nguyen, Lee
• Application Number:
  US08/100,655
• Time in Patent Office: 1,166 Days
• Field of Search: 455/53.1, 455/54.1, 455/54.2, 455/56.1, 455/66, 370/85.13, 370/95.1, 370/95.3, 370/94.3, 370/85.2, 340/825.31, 340/825.34, 379/59, 379/58
• US Class Current: 455/507
• CPC Class Codes: H04L 67/04 specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Abstract

A system is disclosed for maintaining processing continuity in a network having a network accessible application and an intermittently connected wireless mobile unit. A transceiver is connected to the network for wireless communication with the mobile unit, and a gateway connected to the network is used to control the transceiver. A stationary processor is connected to the gateway and configured to support access to the network accessible application, which can run either on the stationary processor itself or on a remote processor. Use of network accessible applications from the mobile unit is mediated by an agent dedicated to communication and processing control of the mobile unit. The agent runs on the stationary processor and is connected to the gateway for handling communications between the mobile unit and the network accessible application. To ensure processing continuity, the agent is configured to hold data received from the network accessible application for transmission to the mobile unit only when the mobile unit is in wireless communication with the network.

Claims

1. A system for maintaining processing continuity in a network having a network accessible application and a mobile unit intermittently connected through wireless links to the network, the system comprising

a mobile unit having a mobile transceiver for wireless communication with the network,

a stationary transceiver connected to the network for wireless communication with the mobile unit,

a gateway for controlling the stationary transceiver, the gateway being connected to the network,

a stationary processor connected to the gateway and configured to support access to the network accessible application from the mobile unit, and

an agent dedicated to communication and processing control of the mobile unit, the agent running on the stationary processor and connected to the gateway for handling communications between the mobile unit and the network accessible application, with the agent configured to hold data received from the network accessible application for transmission to the mobile unit when the mobile unit is in wireless communication with the network.

2. The system of claim 1, wherein the stationary processor runs both the network accessible application and the agent.

3. The system of claim 1, wherein the stationary processor runs the agent and is connected by the network to a second stationary processor that runs the network accessible application.

4. The system of claim 1, wherein the agent further comprises a module for preventing communication between an unauthorized network accessible application and the mobile unit.

5. The system of claim 1, wherein the agent further comprises a module for scheduling communication access between a plurality of network accessible applications and the mobile unit.

6. The system of claim 1, wherein the agent further comprises a module for resolving contentious access requests between a plurality of network accessible applications and the mobile unit.

7. A method for maintaining processing continuity in a network having a network accessible application and a mobile unit intermittently connected through wireless links to the network, the method comprising the steps of

maintaining at least intermittent communication between a gateway connected to the network and a mobile unit having a transceiver for wireless communication with the gateway,

providing a stationary processor connected to the gateway and configured to support access to the network accessible application from the mobile unit, and

running an agent on the stationary processor, the agent being dedicated to communication and processing control of the mobile unit, with the agent connected to the gateway for handling communications between the mobile unit and the network accessible application, and the agent being configured to hold data received from the network accessible application for transmission to the mobile unit when the mobile unit is in wireless communication with the network.