Accelerated recovery during negotiation between a media gateway and a media gateway controller
View Patent ↗A method is disclosed that enables an improved technique for recovering from an error scenario encountered during a call setup that involves a malfunctioning media gateway and the corresponding media gateway controller. The media gateway first detects a malfunction that affects a digital signal processing resource. The media gateway then proactively selects a processing resource available elsewhere at the gateway. The media gateway selects the new processing resource based on criteria that include: i) the capabilities that were identified to handle the packet stream at the affected (faulty) processor; ii) the capabilities of the IP terminal originating the packet stream that is being moved; and iii) the Internet Protocol address of the affected processing resource. Advantageously, an effort is made to avoid having to inform the media gateway controller of the move, thereby minimizing any discontinuity in each packet stream and minimizing the time and processing that are required to establish the call.
1. A method comprising:
detecting a first malfunction, wherein said first malfunction affects a first processing resource in a first signal processor in a first data-processing system;
receiving a first indication, which indicates that said first processing resource has been assigned to handle a first packet stream, wherein said first processing resource is addressable by a first transport layer port number, and wherein said first transport layer port number exists in the address space of a first plurality of signal processors that comprises said first signal processor;
selecting a second processing resource to handle said first packet stream, wherein the selection occurs as the result of (i) the detection of said first malfunction and (ii) the receiving of said first indication;
reassigning said first transport layer port number to said second processing resource;
detecting a second malfunction, wherein said second malfunction affects a third processing resource in said first signal processor;
receiving a second indication, which indicates that said third processing resource has been assigned to handle a second packet stream, wherein said third processing resource is addressable by a second transport layer port number, and wherein said second transport layer port number exists in the address space of said first plurality of signal processors;
selecting a fourth processing resource to handle said second packet stream, wherein the selection occurs as the result of (i) the detection of said second malfunction and (ii) the receiving of said second indication; and
reassigning said second transport layer port number to said fourth processing resource.
2. The method of claim 1 wherein said second processing resource is in said first signal processor, and wherein said fourth processing resource is in a second signal processor that is in said first plurality of signal processors.
3. A method comprising:
detecting a first malfunction, wherein said first malfunction affects a first processing resource in a first signal processor in a first data-processing system;
receiving a first indication, which indicates that said first processing resource has been assigned to handle a first packet stream, wherein said first processing resource is addressable by a first transport layer port number, and wherein said first transport layer port number exists in the address space of a first plurality of signal processors that comprises said first signal processor, and wherein said first plurality of signal processors is addressable by a first Internet Protocol address;
determining whether a second signal processor that is in said first plurality of signal processors is available to handle said first packet stream, wherein the determination occurs as the result of (i) the detection of said first malfunction and (ii) the receiving of said first indication;
when said second signal processor is unavailable, transmitting a first message to a second data-processing system, wherein said first message comprises at least a second Internet Protocol address, and wherein a second plurality of signal processors that excludes both said first signal processor and said second signal processor is addressable by said second Internet Protocol address;
detecting a second malfunction, wherein said second malfunction affects a second processing resource in said first signal processor;
receiving a second indication, which indicates that said second processing resource has been assigned to handle a second packet stream, wherein said second processing resource is addressable by a second transport layer port number, and wherein said second transport layer port number exists in the address space of said first plurality of signal processors;
selecting a third processing resource to handle said second packet stream, wherein the selection occurs as the result of (i) the detection of said second malfunction and (ii) the receiving of said second indication; and
reassigning said second transport layer port number to said third processing resource.
4. The method of claim 3 wherein said second processing resource is in said first signal processor.
5. The method of claim 3 wherein said second processing resource is in said second signal processor.
6. A method comprising:
detecting a first malfunction, wherein said first malfunction affects a first processing resource in a first signal processor in a first data-processing system;
receiving a first indication, which indicates that said first processing resource has been assigned to handle a first packet stream, wherein said first processing resource is addressable by a first transport layer port number, and wherein said first transport layer port number exists in the address space of a first plurality of signal processors that comprises said first signal processor, and wherein said first plurality of signal processors is addressable by a first Internet Protocol address;
determining whether a second signal processor that is in said first plurality of signal processors is available to handle said first packet stream, wherein the determination occurs as the result of (i) the detection of said first malfunction and (ii) the receiving of said first indication; and when said second signal processor is unavailable,
transmitting a first message to a second data-processing system, wherein said first message comprises at least a second Internet Protocol address, and wherein a second plurality of signal processors that excludes both said first signal processor and said second signal processor is addressable by said second Internet Protocol address; and
receiving a second indication, which indicates that a third processing resource has been assigned to handle said first packet stream, wherein said third processing resource is addressable by a second transport layer port number, and wherein said second transport layer port number exists in the address space of a second plurality of signal processors that comprises said third signal processor, and wherein said second plurality of signal processors is addressable by said second Internet Protocol address.
7. A method comprising:
receiving a first indication, which indicates that a first processing resource in a first signal processor at a first data-processing system has been assigned to handle a first packet stream, wherein said first processing resource is addressable by a first transport layer port number, and wherein said first transport layer port number exists in the address space of a first plurality of signal processors that comprises said first signal processor, and wherein said first plurality of signal processors is addressable by a first Internet Protocol address;
selecting a second processing resource at said first data-processing system to handle said first packet stream, wherein the selection occurs as the result of: i) a malfunction that affects said first processing resource, and ii) the receiving of said first indication, and wherein the selection is based on at least one of:
i) the capabilities that have been assigned to handle said first packet stream at said first signal processor, ii) the capabilities of a telecommunications terminal that is originating said first packet stream, and iii) said first Internet Protocol address; and when said second processing resource is in a second signal processor that is in a second plurality of signal processors that is addressable by a second Internet Protocol address, transmitting a first message to a second data-processing system, wherein said first message comprises:
i) said second Internet Protocol address, and ii) a pointer to said second processing resource, and wherein said second plurality of signal processors excludes said first signal processor; and
receiving a second indication, which indicates that a third processing resource has been assigned to handle said first packet stream, wherein said third processing resource is addressable by a second transport layer port number, and wherein said second transport layer port number exists in the address space of said second plurality of signal processors.
8. A method comprising:
receiving a first indication, which indicates that a first processing resource in a first signal processor at a first data-processing system has been assigned to handle a first packet stream, wherein said first processing resource is addressable by a first transport layer port number, and wherein said first transport layer port number exists in the address space of a first plurality of signal processors that comprises said first signal processor, and wherein said first plurality of signal processors is addressable by a first Internet Protocol address;
selecting a second processing resource at said first data-processing system to handle said first packet stream, wherein the selection occurs as the result of: i) a malfunction that affects said first processing resource, and ii) the receiving of said first indication, and wherein the selection is based on at least one of:
i) the capabilities that have been assigned to handle said first packet stream at said first signal processor, ii) the capabilities of a telecommunications terminal that is originating said first packet stream, and iii) said first Internet Protocol address; and when said second processing resource is in a second signal processor that is in a second plurality of signal processors that is addressable by a second Internet Protocol address, transmitting a first message to a second data-processing system, wherein said first message comprises:
i) said second Internet Protocol address, and ii) a pointer to said second processing resource, wherein said second plurality of signal processors excludes said first signal processor,
receiving a second indication, which indicates that a third processing resource has been assigned to handle said first packet stream, wherein said third processing resource is addressable by a second transport layer port number, and wherein said second transport layer port number exists in the address space of said second plurality of signal processors,
and wherein said second processing resource and said third processing resource are the same.
9. A method comprising:
receiving a first indication, which indicates that a first processing resource in a first signal processor at a first data-processing system has been assigned to handle a first packet stream, wherein said first processing resource is addressable by a first transport layer port number, and wherein said first transport layer port number exists in the address space of a first plurality of signal processors that comprises said first signal processor, and wherein said first plurality of signal processors is addressable by a first Internet Protocol address;
selecting a second processing resource at said first data-processing system to handle said first packet stream, wherein the selection occurs as the result of: i) a malfunction that affects said first processing resource, and ii) the receiving of said first indication, and wherein the selection is based on at least one of:
i) the capabilities that have been assigned to handle said first packet stream at said first signal processor, ii) the capabilities of a telecommunications terminal that is originating said first packet stream, and iii) said first Internet Protocol address; and when said second processing resource is in a second signal processor that is in a second plurality of signal processors that is addressable by a second Internet Protocol address, transmitting a first message to a second data-processing system, wherein said first message comprises:
i) said second Internet Protocol address, and ii) a pointer to said second processing resource, wherein said second plurality of signal processors excludes said first signal processor,
receiving a second indication, which indicates that a third processing resource has been assigned to handle said first packet stream, wherein said third processing resource is addressable by a second transport layer port number, and wherein said second transport layer port number exists in the address space of said second plurality of signal processors,
and wherein said second processing resource and said third processing resource are the different.