ATM network system and connection admission control method
First Claim
1. An ATM network system for multiplexing a plurality of connections in a state that permanent virtual connections (PVC) and switched virtual connections (SVC) coexist on the same line, comprising:
- a network management equipment; and
a network equipment,wherein said network management equipment comprises;
a resource allocation control part for deciding the bandwidth of each of a plurality of virtual path connections (VPCs) and resource allocation to PVC and SVC multiplexed on each VPC to be multiplexed on each line accommodated in said network equipment and notifying said network equipment of a result of resource allocation to SVC, anda connection admission control part for PVC for executing connection admission control based on a result of resource allocation to PVC decided by said resource allocation control part when a request of PVC setup is issued from a controlling terminal, and sending source specific information allocated to said PVC to said network equipment, andwherein said network equipment comprises;
a connection admission control part to SVC for executing connection admission control for a request of SVC setup from a controlling terminal or other network equipment based on said result of resource allocation to SVC notified from said network management equipment, anda connection setup control part for performing connection setup operation on said line according to resource definition information allocated to SVC by said connection admission control part to SVC and PVC resource definition information received from said network management equipment.
1 Assignment
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Accused Products
Abstract
Apparatus for executing the connection admission control for PVC and SVC efficiently in an ATM network system which includes a network management equipment and a network equipment. The control function of the network management equipment executes resource allocation to PVC and SVC and notifies the network equipment of resource management information for SVC. For a request of PVC setup, the control function of the network management equipment executes the connection admission control for PVC and notifies the network equipment of the admission result. For a request of SVC setup, the network equipment executes the connection admission control for SVC. Communication overhead is reduced since it is not necessary to inquire the network equipment about connection admission from the network management equipment during PVC setup. Furthermore, the network equipment can count call blocking of SVC.
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Citations
24 Claims
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1. An ATM network system for multiplexing a plurality of connections in a state that permanent virtual connections (PVC) and switched virtual connections (SVC) coexist on the same line, comprising:
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a network management equipment; and a network equipment, wherein said network management equipment comprises; a resource allocation control part for deciding the bandwidth of each of a plurality of virtual path connections (VPCs) and resource allocation to PVC and SVC multiplexed on each VPC to be multiplexed on each line accommodated in said network equipment and notifying said network equipment of a result of resource allocation to SVC, and a connection admission control part for PVC for executing connection admission control based on a result of resource allocation to PVC decided by said resource allocation control part when a request of PVC setup is issued from a controlling terminal, and sending source specific information allocated to said PVC to said network equipment, and wherein said network equipment comprises; a connection admission control part to SVC for executing connection admission control for a request of SVC setup from a controlling terminal or other network equipment based on said result of resource allocation to SVC notified from said network management equipment, and a connection setup control part for performing connection setup operation on said line according to resource definition information allocated to SVC by said connection admission control part to SVC and PVC resource definition information received from said network management equipment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An ATM network system comprising:
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a network management equipment; and a network equipment, wherein said network management equipment comprises; means for deciding the bandwidth of each of a plurality of virtual path connections (VPCs) and resource allocation to a permanent virtual connection (PVC) and a switched virtual connection (SVC) multiplexed on each VPC to be multiplexed on each line accommodated in said network equipment and notifying said network equipment of a result of resource allocation to SVC, and means for executing connection admission control for PVC based on a result of resource allocation to PVC when a request of PVC setup is issued from outside and notifying said network equipment of source definition information allocated to said PVC of setup request, and wherein said network equipment comprises; means for executing connection admission control for SVC in response to a request of SVC setup from a controlling terminal or other network equipment based on said result of resource allocation to SVC notified from said network management equipment, means for performing a new connection setup operation on said line according to the resource definition information allocated to SVC by said connection admission control part to SVC and the PVC resource definition information notified from said network management equipment, and means for counting as a number of call blocking corresponding to the VPC identifier when resources cannot be allocated to said request of SVC setup in said connection admission control for SVC and sending call blocking notification information including the VPC identifier to said network management equipment at a point of time when said number of call blocking reaches a predetermined threshold value. - View Dependent Claims (11, 12, 13)
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14. A network management equipment connected to at least one network equipment constituting an ATM network, comprising:
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first means for deciding the bandwidth of each of a plurality of virtual path connections (VPCs) and resource allocation to a permanent virtual connection (PVC) and a switched virtual connection (SVC) multiplexed on each VPC to be multiplexed on each line accommodated in said network equipment and notifying said network equipment of a result of resource allocation to SVC; and second means for executing connection admission control for PVC in response to a request of PVC setup from a controlling terminal based on a result of resource allocation to PVC and notifying said network equipment of resource definition information allocated to PVC. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A connection admission control method in an ATM system comprising a network management equipment and a network equipment wherein connection is multiplexed in the state that permanent virtual connections (PVC) and switched virtual connections (SVC) coexist on lines accommodated in said network equipment, comprising:
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a first step of executing resource allocation for PVC and SVC by said network management equipment; a second step of storing resource management information allocated to PVC in said network management equipment; a third step of notifying said network equipment of resource management information allocated to SVC by said network management equipment; a fourth step of executing the connection admission control for PVC by said network management equipment on the basis of said resource management information allocated to PVC when a request of PVC setup is issued and notifying said network equipment of parameter information with regard to said resource allocated to PVC; a fifth step of setting PVC on the predetermined line by said network equipment according to said parameter information of said PVC resource; and a sixth step of executing the connection admission control for SVC by said network equipment on the basis of said resource management information allocated to SVC when a request of SVC setup is issued and setting SVC on the predetermined line according to said resource parameter information allocated to SVC. - View Dependent Claims (21, 22, 23, 24)
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Specification