SYSTEM AND PROCESS FOR DIMENSIONING A CELLULAR TELECOMMUNICATIONS NETWORK

• US 20110007645A1
• Filed: 11/20/2008
• Published: 01/13/2011
• Est. Priority Date: 11/20/2007
• Status: Active Grant

• Current Assignee: Telstra Corporation Limited (Telstra Group Ltd.)
• Original Assignee: Telstra Corporation Limited (Telstra Group Ltd.)
• Inventors: Northcote, Bruce Stephen, Tompson, Nicholas Andrew
• Granted Patent: US 8,630,194 B2
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04W 16/18 Network planning tools
• CPC Class Codes: H04W 16/22 Traffic simulation tools or models
• CPC Class Codes: H04W 28/0268 using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] negotiating SLA or negotiating QoS H04W28/24
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems

Abstract

A process for dimensioning a cellular telecommunications network, including, for each of one or more network elements of the network: accessing network element environment data representing a configuration and environment of the network element; accessing QoS data representing quality of service criteria for users of the network; and processing the network element environment data and the QoS data to generate network element capacity data representing combinations of loads of network services corresponding to capacities of the network element that meet the quality of service criteria.

Claims

1. A process for dimensioning a cellular telecommunications network, including, for each of one or more network elements of said network:

accessing network element environment data representing a configuration and environment of the network element;

accessing QoS data representing quality of service criteria for users of said network; and

processing the network element environment data and said QoS data to generate network element capacity data representing combinations of loads of network services corresponding to capacities of said network element that meet said quality of service criteria,

wherein the network element capacity data represents a boundary between combinations of loads of said services that meet said quality of service criteria and combinations of loads of said services wherein at least one of said quality of service criteria is not met.

2. The process of claim 1, wherein said network services include services that consume network resources shared between users of said network element

3. The process of claim 1, wherein said network services include services that consume network resources that are shared in variable amounts between users of said network element.

4. The process of claim 1, wherein said processing includes performing a numerical simulation of the network element for each of a plurality of operating points of said network element, each operating point representing specified average loads of said network services, wherein loads of said network services are statistically distributed about the corresponding average value.

5. The process of claim 4, wherein the simulation is a Markov Chain simulation.

6. The process of claim 1, wherein said quality of service criteria include at least one criterion based on a performance metric other than blocking.

7. The process of claim 1, wherein said network element environment data also represents measured loads of each of a plurality of services of the network element, and the process includes processing said network element performance data to generate network element load data representing a load of said network element as a combination of said measured loads of said services, and comparing said network element load data with said network element capacity data to generate network element headroom data representing available capacity of said network element.

8. The process of claim 1, wherein the network services include at least two of:

standalone signalling radio bearer (SRB), Speech, Video, R99 packet data, and High Speed Downlink Packet Access (HSDPA) data.

9. The process of claim 1, including processing said network element capacity data to identify one or more of the most limiting network resources.

10. The process of claim 1, including processing said network element capacity data to generate a ranked list of the most limiting network resources.

11. The process of claim 9, wherein said step of processing said network element capacity data includes generating performance metrics representing a portion of time that user-perceived performance is unacceptable as a result of (i) blocking due to lack of dedicated resources or (ii) lack of shared access to non-dedicated resources;

wherein the most limiting of said resources are identified on the basis of said performance metrics.

12. The process of claim 1, wherein said network elements include at least one cell of said network and at least one base transceiver station of said network, wherein the environment of a cell or a base transceiver station includes a radio environment of that cell or base transceiver station.

13. The process of claim 1, wherein said network is a WCDMA network.

14. A computer readable storage medium having stored thereon program instructions for executing the steps of claim 1.

15. A system having components for executing the steps of claim 1.

16. A system for dimensioning a cellular telecommunications network, the system including:

an environmental parameter generator configured to access network element environment data representing a configuration and environment of each of one or more network elements of said network; and

a network element capacity generator configured to process the network element environment data and QoS data representing quality of service criteria for users of said network to generate network element capacity data representing combinations of loads of network services corresponding to capacities of each network element that meet said quality of service criteria,

wherein the network element capacity data represents a boundary between combinations of loads of said services that meet said quality of service criteria and combinations of loads of said services wherein at least one of said quality of service criteria is not met.

17. The system of claim 16, wherein said network element capacity generator includes a Markov chain simulator configured to simulate each of a plurality of operating points of each network element, each operating point representing specified average loads of said network services, wherein loads of said network services are statistically distributed about the corresponding average value.

18. The system of claim 16, wherein said network element environment data also represents measured loads of each of a plurality of services of the network element, and the system includes a dimensioning data generator configured to process said network element performance data to generate network element load data representing a load of each network element as a combination of said measured loads of said services, and to compare said network element load data with said network element capacity data to generate network element headroom data representing available capacity of each of said network elements.

19. The system of claim 18, wherein said dimensioning data generator is configured to process said network element capacity data to identify one or more of the most limiting of said resources.

20. The system of claim 18, wherein said dimensioning data generator is configured to generate performance metrics representing a portion of time that user-perceived performance is unacceptable as a result of (i) blocking due to lack of dedicated resources or (ii) lack of shared access to non-dedicated resources;

wherein the one or more of the most limiting of said resources are identified on the basis of said blocking data.

21. The system of claim 16, wherein said network is a UMTS network.

22. The system of claim 16, wherein said network is a WCDMA network.

23. A computer-readable storage medium having stored thereon programming instructions for executing a process for dimensioning a cellular telecommunications network, the process including, for each of one or more network elements of said network:

accessing network element environment data representing a configuration and environment of the network element;

accessing QoS data representing quality of service criteria for users of said network; and

processing the network element environment data and the QoS data to generate network element capacity data representing combinations of loads of said network services corresponding to capacities of said network element that meet said quality of service criteria,

wherein the network element capacity data represents a boundary between combinations of loads of said services that meet said quality of service criteria and combinations of loads of said services wherein at least one of said quality of service criteria is not met.