Systems and methods for providing increased server performance, in a communications network

• US 5,946,299 A
• Filed: 07/15/1996
• Issued: 08/31/1999
• Est. Priority Date: 07/15/1996
• Status: Expired due to Fees

• Current Assignee: AT&T Corporation (AT&T, Inc.)
• Original Assignee: AT&T Corporation (AT&T, Inc.)
• Inventors: Blonder, Greg E.
• Primary Examiner(s): VU, HUY DUY
• Application Number:
  US08/680,945
• Time in Patent Office: 1,142 Days
• Field of Search: 379/221, 379/224, 379/45, 379/46, 379/210, 379/211, 379/212, 379/93.01, 370/216, 370/217, 370/218, 370/219, 370/220, 370/221, 370/225, 370/241, 370/242, 370/352, 370/357, 370/386, 370/389, 370/392, 370/237, 370/356, 370/351, 370/235, 370/230, 455/453, 395/180, 395/181, 395/182.01, 395/182.02
• US Class Current: 370/237
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 67/1004 Server selection for load balancing
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42
• CPC Class Codes: H04Q 3/0062 Provisions for network management

Abstract

Systems and methods for automatically increasing server performance in a communications network are presented. Individual servers are provided with the capability to automatically reject incoming communications when a performance evaluation by the receiving server indicates that performance will be significantly, negatively affected by processing the new communication (i.e., the server will begin to be overloaded and performance will suffer). In rejecting the incoming communication, the server sends the received packet back to the sending server along with a rejected message and a secondary transmission address (i.e., an alternate end-server). The initial sending server then re-transmits the communication using the secondary address as the primary address. The techniques of the present invention are particularly applicable to servers used to provide toll free service--where the dialed number is not the actual destination number. Other applications of the present invention are also disclosed.

Claims

1. A method for providing increased server performance in a packet transfer communications network in which calls are placed between a user and an end-server, a call ultimately being in the form of packets, each packet having an actual destination address, said method comprising the steps of:

receiving a first packet of said call at said end-server, said end-server having an address equal to said actual destination address;

evaluating current performance parameters of said end-server to determine if degradation in performance of said end-server will occur due to said call;

accepting said first packet and said call from said user if said step of evaluating current performance parameters determines that a significant degradation in performance of said end-server will not occur due to said call;

automatically rejecting said first packet and said call from said user if said step of evaluating current performance parameters determines that a significant degradation in performance of said end-server will occur due to said call;

providing, at the end-server, a second destination address to replace said actual destination address if said first packet is rejected, said second destination address being an address of another end-server;

changing the actual destination address to said second destination address at a first provider server; and

repeating said steps of receiving, evaluating, accepting, automatically rejecting and providing with said second destination address such that said end-server is an end-server having an address equal to said second destination address and said another end-server is an end-server having an address different than the actual destination address and the second destination address.

2. The method of claim 1, further comprising the steps of:

receiving said call at the first provider server, said call being an analog voice call;

converting said received call from an analog voice call to a digital call;

breaking said digital call into packets; and

transmitting at least one of said packets from said first provider server to said end-server, said steps of receiving said call, converting said call, breaking said digital call into packets and transmitting at least one of said packets all preceding said step of receiving a first packet.

3. The method of claim 2, wherein said step of transmitting comprises the steps of:

determining whether said end-server is within a region of coverage provided by said first provider server;

sending said first packet to said end-server if said step of determining determines that said end-server and said first provider server are in the same region of coverage;

sending said first packet to a second provider server if said step of determining determines that said end-server and said first provider server are in different regions of coverage, said second provider server sending said first packet to said end-server.

4. The method of claim 3, wherein said step of sending said first packet to a second provider server comprises the steps of:

sending said first packet to said second provider server;

sending said first packet from said second provider server to a LEC to which said end-server is connected; and

sending said first packet from said LEC to said end-server.

5. The method of claim 4, wherein said step of sending said first packet from said second provider server to said LEC comprises the steps of:

sending said first packet from said second provider server to an access tandem; and

sending said first packet from said access tandem to said LEC.

6. The method of claim 1, wherein said end-server and said another end-server are servers that provide toll free telephone service.

7. The method of claim 1, wherein said end-server and said another end-server are personal computers, each having a modem to answer incoming calls.

8. The method of claim 1, wherein said end-server is an individual'"'"'s home personal computer, said home personal computer having a modem to answer incoming calls.

9. The method of claim 8, wherein said another end-server is said individual'"'"'s office personal computer, said office personal computer having a modem to answer incoming calls.

10. The method of claim 1, wherein said step of evaluating comprises evaluating loading of said end-server.

11. The method of claim 1, wherein said step of evaluating comprises evaluating loading of said end-server and loading of said network.

12. The method of claim 1, wherein said step of evaluating comprises evaluating the time of day said call is initiated.

13. The method of claim 1, wherein said step of evaluating comprises evaluating loading of said end-server and the time of day said call is initiated.

14. The method of claim 1, wherein said packets include data packets.

15. The method of claim 1, wherein said packets include voice packets.

16. A network that provides communications service for one or more callers, said network comprising:

an inter-exchange provider;

an interface from said one or more callers to said inter-exchange provider; and

at least two end-servers coupled to said inter-exchange provider, said inter-exchange provider sending at least one packet of a call from said one or more callers to a first end-server of said end-servers, said first end-server including circuitry that determines whether to accept said at least one packet based on a threshold evaluation of degradation in performance of said first end-server, said first end-server also including circuitry that automatically rejects said at least one packet and provides a secondary address for said call to said inter-exchange provider if said threshold evaluation of degradation in performance exceeds a threshold value, said secondary address being the actual address of another one of said at least two end-servers;

wherein said inter-exchange provider comprises;

at least one provider server including circuitry that, if said call is rejected by said first end-server, assigns a new primary address to said at least one packet, said new primary address being said secondary address received from said first end-server, said at least one provider server further including circuitry that transmits said at least one packet to said another end-server having said secondary address; and

said inter-exchange provider further including circuitry that repeats sending, determining, rejecting, providing and assigning with said secondary address such that said second end-server of said at least two end-servers is an end-server having an address equal to said secondary address and said another end-server is an end-server having an address different than the secondary address.

17. The network of claim 16, wherein said inter-exchange provider further comprises:

at least one provider server including circuitry that, if said call is not in packet form, converts said call to at least one packet in packet form and assigns a primary address to said at least one packet, said primary address being the address of said first one of said end-servers.

18. The network of claim 16, wherein at least one of said at least two end-servers is a personal computer that has a modem to answer incoming calls.