Electrical computers and digital processing systems: multicomput – Computer-to-computer data routing
Patent
1998-07-21
2000-09-19
Vu, Viet D.
Electrical computers and digital processing systems: multicomput
Computer-to-computer data routing
709239, 709242, 709243, G06F 1300
Patent
active
061226726
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to methods for transmitting messages between an information sender and an information recipient and can be used for transmitting messages between networked subscriber units.
BACKGROUND OF THE INVENTION
Messages can be transmitted between subscriber units (computers), arranged in a single network, by various methods.
In a conventional, generally known "point-to-point" method for transmitting messages, messages are directly transmitted from one subscriber unit, a message sender, to another subscriber unit, a message recipient. This method provides the most economical way for transmitting messages. The method, however, suffers a significant problem: it is entirely impossible to transmit a message to a disabled destination subscriber unit, i.e. when the destination subscriber unit is turned off at the moment of transmitting a message to it and will be subsequently turned on after a lapse of time (off-line mode).
When a central server is used, a message sent by one network subscriber (a sender) to another subscriber (a called party) is first transmitted to a network central service unit (a server). The destination unit either periodically checks the central server for messages that are intended for it, or is informed of the presence of such messages by the central server itself, and receives the messages. This method allows the messages to be transmitted in the off-line mode.
The problem with the method for transmitting messages through a central server is the fact that a message transmission rate depends on the central server efficiency and a total number of simultaneously accessing subscribers. If the number of simultaneously operating subscribers is significant, heavy demands are imposed on the central server efficiency.
To improve the system reliability and to provide a possibility to occasionally disable the central server without disturbing the normal operation, the central server can be complemented with one or more backup servers. Messages transmitted via the central server are also simultaneously duplicated at the backup servers. When the central server is turned off, it will be replaced by a backup server, and, therefore, the system will not be disordered even if the central server is disabled.
A disadvantage of the redundant system is a necessity to duplicate operations of the central server at least at one backup server, i.e. to invoke additional resources. In this method, the message transmission rate is also defined by the relationship between the central server efficiency and a total number of simultaneously operating subscribers.
Known in the art is a method for transmitting messages, utilized in the Internet, that is based on a static routing principle. In this method of transmitting messages, each server having message reception and transmission functions, i.e. a "mail" server, comprises a list of other "mail" servers to which mail messages intended for destinations that are external to said server can be sent. If it is necessary to send a message to a destination unit that is assigned to another mail server, the next location to store the message will be selected from the static list of mail servers (see Mail Routing and the Domain System. C. Partridge. CSNET CIC BBN Laboratories Inc., January 1986. Network Working Group. Request for Comments: 974).
However, the method based on static routing fails to take into account such factors as a traffic load on servers. A route should be changed either through a direct instruction from the sender, or by a system administrator reconfiguring the mail server (see Classification in E-mail Routing. J. Houttuin, RARE October 1994, Network Working Group. Request for comments: 1711).
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a method for transmitting messages between networked subscriber units, which overcomes the disadvantages of the aforementioned prior art methods. The method allows the efficiency of transmitting messages to be improved owing to the enhanced tota
REFERENCES:
patent: 4800488 (1989-01-01), Agrawal et al.
patent: 4870571 (1989-09-01), Frink
patent: 5029075 (1991-07-01), Hirasawa
patent: 5208816 (1993-05-01), Seshardi et al.
patent: 5448750 (1995-09-01), Eriksson et al.
patent: 5517617 (1996-05-01), Sathaye et al.
patent: 5517652 (1996-05-01), Miyamoto et al.
patent: 5903545 (1999-05-01), Sabourin et al.
Houttuin, J. "Classifications in E-mail Routing" Network Working Group, RFC 1711, RARE (Oct. 1994).
Partridge, C. "Mail Routing and the Domain System" Network Working Group, RFC 974, CSNET CIC BBN Laboratories Inc. (Jan. 1986).
Abstract of SU1337902 of Sep. 1987.
Abstract of SU 1497754 of Jul. 1989.
Alikberov Ilmir Rasikovich
Gnedovsky Mikhail Jurievich
Krasnonosenkikh Dmitry Pavlovich
Potryvaev Alexandr Mikhailovich
Vyaznikov Konstantin Vitalievich
Samsung Electronics Co,. Ltd.
Vu Viet D.
LandOfFree
Method for sending messages among a group of subsets forming a n does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for sending messages among a group of subsets forming a n, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for sending messages among a group of subsets forming a n will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1083699