 Diversity transmitter/receiver |
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| Interleaver and deinterleaver for use in a diversity transmission communication system |
| The current invention enhances the performance of a system utilizing interleaving and transmit ... |
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| System and method for providing packet-switched telephony |
| It is therefore one object of the present invention to provide a method and system for replacing a ... |
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| Two phase local mobility scheme for wireless access to packet based networks |
| Local mobility within a subnet is supported by classifying wireless base stations, and the routers ... |
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| Mobility management in wireless internet protocol networks |
| In a wireless cellular communications network based on the Internet Protocol (IP) where packets to ... |
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| Simple multicast extension for mobile IP SMM |
| In a preferred embodiment, the invention is a method and apparatus for routing data to a mobile ... |
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| Task-driven distributed multimedia consumer system |
| To this end, the invention provides a control system comprising multiple electronic devices ... |
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| Method and apparatus for operating the internet protocol over a high-speed serial bus |
| In accordance with a first aspect of the invention, a method of reconfiguring the bus lint without ... |
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| Wireless coupling of incompatible nodes via a virtual network |
| What is claimed is: 1. A wireless information system for wireless communication with at least one ... |
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Signaling mechanism for modem connection holding and reconnecting
| Details |
Inventors: Olafsson, Sverrir;
Assignee: Conexant Systems, Inc. (Newport Beach, CA)
Primary Examiner: Eng; George
Assistant Examiner:
Attorney, Agent or Firm: Farjami & Farjami LLP
A quick startup procedure for a modem system utilizes known characteristics of a previously established communication channel to reduce the initialization period associated with subsequent connections over the same channel. In response to the establishment of a call, the modem devices determine whether the quick connect protocol is supported. If so, then the called modem transmits a modified answer tone to the calling modem. The calling modem analyzes the signal received in response to the modified answer tone to determine whether characteristics of the current channel are similar to stored characteristics associated with a previous connection over the same channel. If a channel "match" is found, then the modem devices carry out a quick initialization routine that eliminates, abbreviates, or modifies a number of procedures or protocols that are carried out in conventional modem startup processes. The general quick startup techniques may also be applied in the context of a quick reconnect procedure that can be performed in response to a temporary pausing or disconnecting of the data modem mode. |
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DETAILED DESCRIPTION The present invention provides techniques to shorten the startup and reconnection times associated with a data communication system that employs a modem.
The quick reconnect technique leverages the known channel characteristics of a previous connection to reduce the reinitialization period associated with subsequent attempts to reconnect the same two modem devices.
In accordance with one illustrative embodiment, the techniques of the present invention are utilized to reduce the reconnection time for a communication session that follows an upper layer protocol, e.
g.
, PPP.
Although not limited to any specific modem application, the quick startup and reconnect procedures may be used to eliminate portions of the initialization protocols or processes normally employed by a V.
90 modem, e.
g.
, V.
8bis, V.
8, digital impairment learning, initial training, probing and ranging, or the like.
In addition, the quick startup and reconnect techniques may perform certain operations at a different time or in a different order in comparison to a conventional modem startup technique.
The above and other aspects of the present invention may be carried out in one form by a method for reducing the reconnection time associated with a data transmission system having a first device configured to communicate with a second device over a communication channel.
The illustrative method involves establishing a communication session between the first device and the second device over the communication channel, obtaining a number of operating parameters for the data transmission system, where the operating parameters are associated with the communication channel, and storing at least one of the operating parameters at the second device.
After a temporary pause in the communication session, the operating parameters are recalled at the second device.
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Multiplexer-related 
