Method and system for modeling migration of call traffic in a multiple mode wireless network

• US 6,636,739 B1
• Filed: 08/24/2000
• Issued: 10/21/2003
• Est. Priority Date: 08/24/2000
• Status: Expired due to Fees

• Current Assignee: Verizon Laboratories Incorporated (Verizon Communications Inc.)
• Original Assignee: Verizon Laboratories Incorporated (Verizon Communications Inc.)
• Inventors: Kalofonos, Dimitris N., Ganesh, Rajamani, Fagen, Donna, OʼByrne, Vincent A.
• Primary Examiner(s): Nguyen, Lee
• Assistant Examiner(s): Ward, Ronald J.
• Application Number:
  US09/645,738
• Time in Patent Office: 1,153 Days
• Field of Search: 455/446-449, 455/452, 455/453, 455/454, 455/67.1, 455/67.7, 455/423, 455/424, 455/552, 455/553, 455/452.1, 455/452.2, 455/67.11, 455/552.1, 455/553.1, 370/241
• US Class Current: 455/453
• CPC Class Codes: H04W 16/18 Network planning tools
• CPC Class Codes: H04W 16/22 Traffic simulation tools or models

Abstract

A computing system (36) provides a network designer with a mechanism for modeling migration, or a shift, of call traffic from a first server (26) operating using a first technology type to a second server (28) operating using a second technology type. The system (36) executes a traffic map generation process (56) for generating a first traffic map (60) responsive to a radio coverage area (30) and a call traffic load (84) for the first server (26), and for generating a second traffic map (62) responsive to a radio coverage area (32) and call traffic load (90) for the second server (28). The system (36) executes a call traffic migration modeling process (58) to adapt the second traffic map (62) to include a proportion (100) of the first call traffic load (84) to be shifted from the first server (26) to the second server (28).

Claims

1. In a multiple mode wireless network in which a first server operates using a first technology type and a second server operates using a second technology type, a computer-based method for modeling migration of call traffic from said first server to said second server comprising:

generating a first traffic map having a first call traffic load distributed over a first radio coverage area of said first server;

generating a second traffic map having a second call traffic load distributed over a second radio coverage area of said second server;

determining a proportion of said first call traffic load to shift from said first server to said second server; and

adapting said second traffic map to include said proportion of said first call traffic load and to adjust said second call traffic load to obtain an adjusted second call traffic load controllable by said second server.

2. A computer-based method as claimed in claim 1 wherein said generating said first traffic map comprises:

representing said network by a plurality of sections;

defining said first radio coverage area to contain a first subset of said sections; and

distributing amounts of said first call traffic load to said sections of said first radio coverage area.

3. A computer-based method as claimed in claim 2 wherein said distributing operation uniformly distributes said amounts of said first call traffic load to said sections.

4. A computer-based method as claimed in claim 2 wherein said distributing operation non-uniformly distributes said amounts of said first call traffic load to said sections.

5. A computer-based method as claimed in claim 2 wherein said generating said second traffic map comprises:

defining said second radio coverage area to contain a second subset of said sections; and

allocating amounts of said second call traffic load to said sections of said second radio coverage area.

6. A computer-based method as claimed in claim 5 wherein said allocating operation uniformly allocates said amounts of said second call traffic load to said sections of said second subset.

7. A computer-based method as claimed in claim 5 wherein said allocating operation non-uniformly allocates said amounts of said second call traffic load to said sections of said second subset.

8. A computer-based method as claimed in claim 1 wherein said adjusting operation comprises:

representing said network by a plurality of sections;

defining said first radio coverage area to contain a first subset of said sections;

defining said second radio coverage area to contain a second subset of said sections;

for each of said sections of said first subset, computing a quantity of said first call traffic load, responsive to said proportion, to be shifted from said first server to said second server;

compiling said computed quantities; and

combining said computed quantities with said second call traffic load to obtain said adjusted second call traffic load controllable by said second server.

9. A computer-based method as claimed in claim 8, wherein said combining operation comprises:

identifying ones of said sections that are common to each of said first and second subsets of said sections; and

for each of said common sections, said combining operation further comprises;

determining an amount of said second call traffic load allocated to said common section; and

summing said computed quantity with said amount to determine, for said common section, a portion of said adjusted second call traffic load controllable by said second server.

10. In a multiple mode wireless network in which a first server operates using a first technology type and a second server operates using a second technology type, a computer-based method for modeling migration of call traffic from said first server to said second server comprising:

generating a first traffic map having a first call traffic load distributed over a first radio coverage area of said first server;

generating a second traffic map having a second call traffic load distributed over a second radio coverage area of said second server;

determining a proportion of said first call traffic load to shift from said first server to said second server; and

adapting said second traffic map to include said proportion of said first call traffic load and to adjust a range of said second radio coverage area to include said first radio coverage area.

11. A computer-based method as claimed in claim 10 wherein said adjusting operation comprises:

representing said network by a plurality of sections;

defining said first radio coverage area to contain a first subset of said sections;

defining said second radio coverage area to contain a second subset of said sections;

identifying ones of said sections of said first subset that are distinct from said sections of said second subset; and

including said distinct sections in said second traffic map to adjust said range.

12. A computer-based method as claimed in claim 11 further comprising:

identifying ones of said sections that are common to each of said first and second subsets of said sections;

for each of said common sections, computing a quantity of said first call traffic, responsive to said proportion, to be shifted from said first server to said second server;

for each of said distinct sections, computing said quantity of said first call traffic load, responsive to said proportion, to be shifted from said first server to said second server; and

compiling said computed quantities for each of said distinct and common sections with said second call traffic load to obtain an adjusted second call traffic load controllable by said second server.

13. A computer-based method as claimed in claim 10 further comprising removing said proportion of said first call traffic load from said first traffic map.

14. In a multiple mode wireless network in which a first server operates using a first technology type and a second server operates using a second technology type, a computing system for modeling migration of call traffic from said first server to said second server comprising:

a processor;

a memory element, in communication with said processor, having stored therein a plurality of sections representing said network, a first subset of said sections describing a first radio coverage area of said first server, and a second subset of said sections describing a second radio coverage area of said second server;

an input element, in communication with said processor, for receiving a first figure representing a first call traffic load controllable by said first server, a second figure representing a second call traffic load controllable by said second server, and a proportion figure for determining a proportion of said first call traffic load to shift from said first server to said second server;

a computer-readable storage medium; and

executable code recorded on said computer-readable storage medium for instructing said processor to perform operations comprising;

generating a first traffic map having said first call traffic load distributed over said sections of said first subset;

generating a second traffic map having said second call traffic load distributed over said sections of said second subset;

for each of said sections of said first subset, computing a quantity of said first call traffic load, responsive to said proportion figure, to shift from said first server to said second serve; and

adapting said second traffic map to include said sections of said first subset and said computed quantities for each of said sections of said first subset.

15. A computing system as claimed in claim 14 wherein said executable code further instructs said processor to perform a further operation comprising removing said computed quantities for each of said sections of said first subset from said first traffic map.

16. A computer-readable storage medium containing executable code for instructing a computer to model migration of call traffic in a multiple mode wireless network, said wireless network having a first server operating using a first technology type and a second server operating using a second technology type, said executable code instructing said computer to perform operations comprising:

generating a first traffic map having a first call traffic load distributed over a first radio coverage area of said first server;

generating a second traffic map having a second call traffic load distributed over a second radio coverage area of said second server;

determining a proportion of said first call traffic load to shift from said first server to said second server; and

adapting said second traffic map to include said proportion of said first call traffic load, said adapting operation including;

adjusting a range of said second radio coverage area to include said first radio coverage area; and

adjusting said second call traffic load controllable by said second server to include a quantity of said first call traffic load in response to said determined proportion.

17. A computer-readable storage medium as claimed in claim 16 wherein said executable code instructs said computer to perform further operations comprising:

representing said network by a plurality of sections;

defining said first radio coverage area to contain a first subset of said sections;

defining said second radio coverage area to contain a second subset of said sections;

identifying ones of said sections of said first subset that are distinct from said sections of said second subset; and

including said distinct sections in said second traffic map to adjust said range of said second traffic map.

18. A computer-readable storage medium as claimed in claim 17 wherein said executable code instructs said computer to perform further operations comprising:

identifying ones of said sections that are common to each of said first and second subsets of said sections;

for each of said distinct and common sections, computing a quantity of said first call traffic, responsive to said proportion, to be shifted from said first server to said second server; and

compiling said computed quantities for each of said distinct and common sections with said second call traffic load to obtain an adjusted second call traffic load controllable by said second server.

19. A computer-readable storage medium as claimed in claim 18 wherein for each of said common sections, said executable code instructs said computer to perform further operations comprising:

determining an amount of said second call traffic load allocated to said common section; and

summing said computed quantity with said amount to determine, for said common section, a portion of said adjusted second call traffic load controllable by said server.