SDH ring high order path management

Claim 3

A method of managing a SDH ring subnetwork as defined by claim 1, wherein said ring characteristics comprise ring type and ring identification, number of nodes within the SDH ring, ring status, and node identification, sequence, and status.

Claim 4

A method of managing a SDH ring subnetwork as defined by claim 2, wherein the data representing the ring characteristics are dynamically updated to reflect current conditions of the SDH ring.

Claim 5

A method of managing a SDH ring subnetwork as defined by claim 2, wherein the ring type defines one of unidirectional path switched ring (UPSR) and bidirectional line switched ring (BLSR), and the number of optical fibers within the optical fiber medium.

Claim 6

A method of managing a SDH ring subnetwork as defined by claim 1, wherein said ring provisioning information for defining channel connectivities represents the connections between the channels entering and exiting the first and second high speed modules of each of the network elements and add and drop connections between the first and second high speed modules and the low-speed interface module.

Claim 7

A method of managing a SDH ring subnetwork as defined by claim 5, wherein the channel connectivities comprises data to define ADD, DROP, DROP-CONTINUE, and PASS-THROUGH channel connections.

Claim 8

A method of managing a SDH ring subnetwork as defined by claim 1, wherein said managing step comprises the step of transferring normal traffic and extra traffic around the SDH ring to the first and second high-speed modules and the low-speed interface module of each of the network elements based on the ring provisioning information.

Claim 9

A method of managing a SDH ring subnetwork as defined by claim 7, wherein the SDH ring is a bidirectional line switched ring and the optical fiber medium includes first and second fibers, the first fiber carrying traffic in the clockwise (CW) direction and including CW working and CW protection channels, and the second fiber carrying traffic in the counterclockwise (CCW) direction and including CCW working and CCW protection channels, said method further comprising the steps of: defining a first type of channel connectivity information for each of the CW working, CW protection, CCW working, and CCW protection channels between the first and second high-speed modules of each of the network elements; defining a second type of channel connectivity information for each of the CW working, CW protection, CCW working, and CCW protection channels between the first and second high-speed modules and the low-speed interface module for each of the network elements; and generating the ring provisioning information based on the first and second types of channel connectivity information.

Claim 10

A method of managing a SDH ring subnetwork as defined by claim 8, wherein during normal conditions said CW and CCW working channels carry normal traffic and said CW and CCW protection channels carry the extra traffic, and during failure conditions said CW and CCW protection channels restore the normal traffic, said method further comprising the step of: recognizing a failure condition and the location of the failure condition within the SDH ring; identifying the CW and CCW working channels affected by the failure condition based on the ring provisioning information; identifying the CW and CCW protection channels not affected by the failure condition based on the ring provisioning information; and restoring the normal traffic carried on the CW and CCW working channels affected by the failure condition to the CW and CCW protection channels not affected by the failure condition.

Claim 11

A method of managing a SDH ring subnetwork as defined by claim 9, said method further comprising the step of modifying the ring provisioning information of said ring table after the normal traffic has been restored so as to define the channel connectivities for each of the CW working, CW protection, CCW working, and CCW protection channels.

Claim 12

A method of managing a SDH ring subnetwork as defined by claim 1, wherein said managing step comprises the step of transferring normal traffic around the SDH ring to the first and second high-speed modules and the low-speed interface module of each of the network elements based on the ring provisioning information.

Claim 13

A method of managing a SDH ring subnetwork as defined by claim 11, wherein the SDH ring further comprises an optical fiber for carrying traffic on clockwise (CW) working and CW protection channels in the CW direction and for carrying traffic on counterclockwise (CCW) working and CCW protection channels in the CCW direction, said method further comprising the steps of: defining a first type of channel connectivity information for each of the CW working, CW protection, CCW working, and CCW protection channels between the first and second high-speed modules of each of the network elements; defining a second type of channel connectivity information for each of the CW working, CW protection, CCW working, and CCW protection channels between the first and second high-speed modules and the low-speed interface module for each of the network elements; and generating the ring provisioning information based on the first and second types of channel connectivity information.

Claim 14

A method of managing a SDH ring subnetwork as defined by claim 12, wherein during normal conditions said CW and CCW working channels carry normal traffic and said CW and CCW protection channels carry extra traffic, and during failure conditions said CW and CCW protection channels restore the normal traffic, said method further comprising the step of: recognizing a failure condition and the location of the failure condition within the SDH ring; identifying the CW and CCW working channels affected by the failure condition based on the ring provisioning information; identifying the CW and CCW protection channels not affected by the failure condition based on the ring provisioning information; and restoring the normal traffic carried on the CW and CCW working channels affected by the failure condition to the CW and CCW protection channels not affected by the failure condition.

Claim 15

A method of managing a SDH ring network as defined by claim 13, said method further comprising the step of modifying the ring provisioning information of said ring table after the normal traffic has been restored so as to define the channel connectivities for each of the CW working, CW protection, CCW working, and CCW protection channels.

Claim 16

A method of managing a SDH ring network as defined by claim 13, said method further comprising the step of recovering the normal traffic without reprovisioning the SDH ring.

Claim 17

A method of managing a SDH ring subnetwork as defined by claim 1, wherein the ring provisioning information for defining channel connectivities comprises an array of data cells, said array including a row for each of the channels and a column including two subcolumns for each network element of the SDH ring, and wherein selected ones of the data cells include ring path identification information to define the channel connectivities between the first and second high-speed interface modules and for defining channel connectivities between the low-speed interface module and each of the first and second high-speed modules of said SDH ring.

Claim 18

A method of managing a SDH ring subnetwork as defined by claim 16, wherein the ring path identification information comprises a unique character string of data to identify each SDH path within the SDH ring.

Claim 19

A method of managing a SDH ring subnetwork as defined by claim 17, wherein the unique character string of data is associated with each of the network elements and identifies the network element where the SDH path begins and the network element where the SDH path ends, and includes a sequence number for uniquely identifying the SDH path.

Claim 20

A method of managing a SDH ring subnetwork as defined by claim 18, wherein the unique character string of data further comprises a first extension character to identify the low-speed interface module that a SDH path is dropped to or added from.

Claim 21

A method of managing a SDH ring subnetwork as defined by claim 19, wherein the unique character string of data further comprises a second extension character to identify the status of a SDH path.

Claim 22

A method of managing a SDH ring subnetwork as defined in claim 1, wherein said ring table further defines traffic pattern to support ATM traffic with more efficient bandwidth utilization.

Claim 23

A telecommunication subnetwork system comprising: transmission means including an optical fiber medium for transferring data; and a SDH ring network comprising a plurality of network elements coupled together through said transmission means to form a closed loop, each of said plurality of network elements comprising: first and second high-speed interface modules for interfacing said network element to said transmission means, said first and second high-speed interface modules comprising means for converting optical signals to electrical signals and electrical signals to optical signals; at least one low-speed module, coupled to said first and second high-speed modules and to a communication device located outside of the SDH ring network; means for storing a ring table, said ring table comprising data representing ring characteristics for each of the network elements of said SDH ring, said ring characteristics including, for each of the network elements of said SDH ring, ring provisioning information for defining channel connectivities between the first and second high-speed interface modules and for defining channel connectivities between the low-speed interface module and each of the first and second high-speed modules of said SDH ring; and a controller for controlling and managing at least a portion of the data to and from each of said network element within said SDH ring in accordance with said ring table.

Claim 24

A telecommunication subnetwork system comprising: transmission means including an optical fiber medium for transferring data; and a SDH ring network comprising a plurality of network elements coupled together through said transmission means to form a closed loop, each of said plurality of network elements comprising: first and second high-speed interface modules for interfacing said network element to said transmission means, said first and second high-speed interface modules comprising means for converting optical signals to electrical signals and electrical signals to optical signals; at least one low-speed module, coupled to said first and second high-speed modules and to a communication device located outside of the SDH ring network; means for storing a ring table, said ring table comprising data representing ring characteristics for each of the network elements of said SDH ring, said ring characteristics including, for each of the network elements of said SDH ring, ring provisioning information for defining channel connectivities between the first and second high-speed interface modules and for defining channel connectivities between the low-speed interface module and each of the first and second high-speed modules of said SDH ring; and a controller for controlling and managing at least a portion of the data to and from each of said network element within said SDH ring in accordance with said ring table.

Claim 25

The telecommunication subnetwork system as defined by claim 22, wherein said SDH ring is configured as a unidirectional path switched ring.

Claim 26

The telecommunication subnetwork system as defined by claim 22, wherein said SDH ring is configured as a bidirectional line switched ring.

Claim 27

The telecommunication subnetwork system as defined by claim 24, wherein said transmission means comprises two optical fibers.

Claim 28

The telecommunication subnetwork system as defined by claim 24, wherein said transmission means comprises four optical fibers.

Claim 29

The telecommunication subnetwork system as defined by claim 22, wherein said predetermined characteristics comprise ring type and ring identification, number of nodes within the SDH ring, ring status, and node identification, sequence, and status.

Claim 30

The telecommunication subnetwork system as defined by claim 27, wherein the ring type defines one of unidirectional path switched ring (UPSR) and bidirectional line switched ring (BLSR), and the number of optical fibers within the optical fiber medium.

Claim 31

The telecommunication subnetwork system as defined by claim 22, wherein said ring provisioning information for defining channel connectivities represents the connections between the channels entering and exiting the first and second high speed interface modules of each of the network elements, and add and drop connections between the first and second high speed interface modules and the low-speed interface module.

Claim 32

The telecommunication subnetwork system as defined by claim 29, wherein the channel connectivities comprises data to define ADD, DROP, DROP-CONTINUE, and PASS-THROUGH channel connections.