Method of allocating resources for network capacity management of voice traffic in a packet based broadband access network
First Claim
1. A method of allocating resources for network capacity management of voice traffic in a packet based broadband network comprising:
- a network architecture that decomposes the network into logical components;
an information model that contains the necessary information that must be defined for each type of the said logical components; and
the computation algorithms to determine the optimal network resources to be assigned to each said logical component;
whereas the said packet based broadband network comprising;
a plurality of packet based switching devices;
a plurality of voices switches;
a plurality of integrated access devices; and
a plurality of telephones;
whereas the types of the said voice switches comprising;
packet based voice switches that support hierarchical call blocking;
packet based voice switches that support a single level of call blocking; and
class 5 switches through the use of voice gateways.
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Abstract
The invention specifies a method of allocating resources efficiently for network capacity management of voice traffic in a packet based broadband network. The method includes the specifications of the logical network architecture, its components, the information model associated with the components, and the computation algorithms for network capacity management. The invention is independent of the transport network technologies.
The logical network architecture has a tree topology structure. The method of this invention groups voice traffic flows into aggregate flows segment by segment. Statistical multiplexing techniques such as the Erlang formula can be used to efficiently allocate resources to each aggregate segment. A rule for consistent assignment of the blocking probabilities for the aggregate segments is specified. The method identifies the necessary information that should be defined for each aggregate segment. The method also specifies computation algorithms to compute a number of parameters for each segment, including but not limited to:
equivalent bandwidth required
blocking probability
number of telephones supported
The method also specifies useful reports and alarm indications that can be generated to aid network operators in their network capacity management functions.
A new feature for voice switches, hierarchical call blocking is also specified. With this feature, high concentration can be achieved without the possibility of overloading.
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Citations
18 Claims
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1. A method of allocating resources for network capacity management of voice traffic in a packet based broadband network comprising:
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a network architecture that decomposes the network into logical components;
an information model that contains the necessary information that must be defined for each type of the said logical components; and
the computation algorithms to determine the optimal network resources to be assigned to each said logical component;
whereas the said packet based broadband network comprising;
a plurality of packet based switching devices;
a plurality of voices switches;
a plurality of integrated access devices; and
a plurality of telephones;
whereas the types of the said voice switches comprising;
packet based voice switches that support hierarchical call blocking;
packet based voice switches that support a single level of call blocking; and
class 5 switches through the use of voice gateways. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of providing hierarchical call blocking feature in voice switches by maintaining in the said voice switches information comprising:
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parent-child relationship of the aggregate segments;
resources allocated to aggregate segments; and
telephone numbers associated with each aggregate segment;
whereas the decision for blocking individual calls is based on the above said information and the current traffic load of the aggregate segments.
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Specification