WO2009011005A4 - Method and computer system for analyzing the performance and for dimensioning an underlay/overlay cell of a telecommunication system - Google Patents
Method and computer system for analyzing the performance and for dimensioning an underlay/overlay cell of a telecommunication system Download PDFInfo
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- WO2009011005A4 WO2009011005A4 PCT/IT2008/000464 IT2008000464W WO2009011005A4 WO 2009011005 A4 WO2009011005 A4 WO 2009011005A4 IT 2008000464 W IT2008000464 W IT 2008000464W WO 2009011005 A4 WO2009011005 A4 WO 2009011005A4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/22—Traffic simulation tools or models
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
- H04L41/142—Network analysis or design using statistical or mathematical methods
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/04—Processing captured monitoring data, e.g. for logfile generation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/32—Hierarchical cell structures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Probability & Statistics with Applications (AREA)
- Pure & Applied Mathematics (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Algebra (AREA)
- Data Mining & Analysis (AREA)
- Mobile Radio Communication Systems (AREA)
- Debugging And Monitoring (AREA)
Abstract
A method and a computer system for analyzing the performance and for carrying out the dimensioning of at least one portion of a telecommunication system, including a first and a second network subportion capable of allocating communication-channel requests by mobile terminals, said first network subportion being able to sustain the corresponding communications in high and/or low-symbol-rate traffic channels, said second network subportion being able to sustain the corresponding communications in high and/or low-symbol-rate traffic channels, characterized by the fact of comprising the further steps of providing an average service duration (TOL) of said communications in said first network subportion and an average service duration (TUL) of said communications in said second network subportion, providing the characteristics of said communication-channel requests, providing an amount of resources and the resource configuration in said first and in said second network subportion, comprising a step of reducing the number of the possible states of said network portion. Said characteristics of said communication-channel requests comprise the capability, of said mobile terminals, to sustain calls on high-symbol-rate and/or on low-symbol-rate traffic channels and the capability to support a primary and/or a secondary frequency band. Said portion of a telecommunication system comprises a GSM underlay/overlay cell, said first network subportion comprises an overlay cell and said second network subportion comprises an underlay cell.
Claims
1. A computer-executable method for providing the performance analysis in at least one network portion of a telecommunication system, said network portion including a first and a second network subportion capable of allocating communication-channel requests by mobile terminals, said first network subportion being able to sustain the corresponding communications in high- and/or low-symbol-rate' traffic channels, said second network subportion being able to sustain the corresponding communications in high- and/or low-symbol-rate traffic channels, said method including the steps of: providing a first average number (λo0 of requests per unit time to said first network subportion, in a predetermined time interval; providing an average service duration (TOL) of said communications in said first network subportion; providing an amount and a resource configuration of said first network subportion; providing a first average percentage (PDROL) of calls originated by dual-rate mobile terminals, relative to said first average number (λ0L) of requests, capable of supporting both high- and low- symbol-rate traffic channels; determining the performance of said first network subportion based on said amount and on said configuration of resources, on said average number λ0L, on said average duration TOL and on said first average percentage PDROLJ characterized by the fact that the incoming requests overflowing by said first network subportion (λ0F) are forwarded to said second network subportion and by the fact of comprising the further steps of: providing a second average number (λUL) of requests per unit time to said second network subportion, in said predetermined time interval, said requests to said second network subportion not being included in said incoming requests (λ0F) overflowing by said first network subportion; providing an average service duration (TUL) of said communications in said second network subportion; providing an amount and a resource configuration of said second network subportion; providing a second average percentage (PDEUL) of calls originated by dual-rate mobile terminals, relative to said second average number (λuO of requests, capable of supporting both high- and low- symbol-rate traffic channels; - defining each state of said network portion by means of at least one number "k" of communications sustained in said first network subportion, the number "iDR" of communications sustained in high- symbol-rate communication channels with dual-rate mobile terminals, the number "iSR" of communications sustained in high-symbol-rate communication channels with mobile terminals which do not support the low-symbol-rate communication channels and the number "j" of communications sustained in low-symbol-rate communication channels in said second network subportion;
33 determining, for each state (isR,ΪDRJ>k)> the probability of selecting, in case of a new request, a low or also a high-symbol-rate communication channel within said second network subportion (λj,λ2) or also a high- or a low-symbol-rate traffic channel within said first network subportion (λk), said probability of selection being based on said average numbers of requests (λ0L, λυL), on said amount of resources and on said resource configurations of said first network subportion, on said amount of resources and on said resource configurations of said second network subportion, on said first and second average percentages of calls originated by dual-rate terminals (PDROL> PDRUL); determining, for each state (isR,iDRj,k), a probability πjjk of said network portion being in said state, based on said probability of selection, on said numbers "iSR," "iDR," "j," and "k" and on said average service durations TOL and τυL; determining the performance parameters of said second network subportion and the performance parameters of said network portion based on the set of probabilities πjjk of said network portion being in each state (isR,iDRj;k) and based on said amount of resources of said first and said second network subportion and based on said first and said second average percentage of calls originated by dual-rate terminals (PDROL , PDRUL)-
2. The method according to claim 1, characterized by the fact of comprising, after said step of defining each state of said network portion, a further step of reducing the number of the possible states (isR,ioRJ)k) of said network portion which consists in comprising one or more of the further steps of:
- providing a desired precision level of a performance parameter to be determined by the method; - providing a maximum processing time of the method;
- grouping each of said states (isR^DRU^k) of said second network subportion starting from state (ΪSRJDRJJO) until the state (isR,iDRj>y), "y" being a number of states to be grouped;
- ascertaining a number "y" of states to be grouped which allows said set of probabilities in said second network subportion, or said performance parameters of said second network subportion or said performance parameters of said network portion to be determined, with said desired precision level, within said maximum processing time if necessary; said step of determining the performance parameters being also based on said desired precision level and on said maximum processing time.
3. The method according to claims 1 or 2, characterized by the fact that said amount of resources of said first or of said second network subportion comprises a number (N0L or NUL) of low- or high-symbol-rate communication channels assigned to a service requested by the mobile terminals.
4. The method according to any one or more of claims from 1 to 3, characterized by the fact that said configuration of resources of said first or said second network subportion comprises the settings of a threshold value (XOL or xUL) in such a way that if the occupied level of said resources is greater than or equal to said threshold value, a new request is allocated on a low-symbol-rate communication channel whenever it is
34 possible.
5. The method according to any one or more of the aforesaid claims, characterized by the fact of providing a first value of traffic offered to said first network subportion AOFF,OL= λoi/τ and a second value of traffic offered to said second network subportion 
λUL-τ instead of the individual values of said average numbers of requests (λOL and λUL) and of said average service durations (TOL and τUL).
6. The method according to any one or more of the aforesaid claims, characterized by the fact that said configuration of resources of said first or said second network subportion comprises the possibility of imposing the transition from a high-symbol-rate communication channel to a low-symbol-rate communication channel for at least one ongoing communication in said first or in said second network subportion when, in the presence of a new call request, said resources of said first or of said second network subportion are congested.
7. The method according to any one or more of the aforesaid claims, characterized by the fact of substituting, for every state (isR,iDR,j,k) of said network portion, the number "/= ΪSR + ioit" in place of said number "iDR" and said number "iSR," said number "f being the number of communications sustained on high-bit-rate traffic channels, i.e the sum of said number "iDR" of communications sustained on high-symbol-rate traffic channels with said dual-rate terminals and of said number "iSR" of communications sustained on high-symbol-rate traffic channels with terminals that do not support the low-symbol-rate traffic channel.
8. The method according to any one or more of the aforesaid claims, characterized by the fact of comprising the additional step of determining, for each state of said network portion, a third probability (λ*j) of selecting a low- or high-symbol-rate communication channel in said first or in said second network subportion when said first or said second network subportion is congested, in case of a new incoming request, said set of probabilities (πyk) and said performance parameters being also based on said third probability of selection (λ*0.
9. The method according to any one or more of the aforesaid claims, characterized by the fact that said configuration of resources comprises the possibility of imposing the preservation of the type of communication channel for the component of said average number of requests which, subsequent to handover procedures, originate from neighbored-network portions.
10. The method according to any one or more of the aforesaid claims, characterized by the fact of providing several average terminal percentages (PHR, PsRh, PuRh) having the capability of supporting the high- and/or low-symbol-rate communication channels in said predetermined time interval based on said configurations of resources, said first, second and third probabilities of selection (λb X2, λ*j) being also based on said percentages (PHR, PSRh, PDRh)-
11. The method according to any one or more of the aforesaid claims, characterized by the fact that said configuration of resources comprises furthermore one or more of the following network features:
- the possibility of allocating, whenever it is possible, a communication channel in said first network subportion rather than in said second network subportion; - the possibility of configuring said network portion as an underlay/overlay cell of a cellular telecommunication system and of configuring said first network subportion as an overlay cell (OL) and said second network subportion as an underlay cell (UL);
- the possibility that said first network subportion may operate on a primary or on a secondary frequency band and that said second network subportion may operate on a primary or on a secondary frequency band;
- the possibility of allocating a communication channel in one of said first or of said second network subportion operating on a secondary frequency band only to users who are equipped with terminals capable of supporting said secondary frequency band (dual-band terminals), whereas any terminal is capable of supporting at least the primary frequency band.
12. The method according to claim 11 characterized by the fact of providing a percentage (PDRDB) of dual- band terminals capable of supporting both frequency bands, primary and secondary, and of providing a probability PMA that a dual-band terminal does not make connection with the network subportion operating on the secondary frequency band.
13. The method according to any one or more of the aforesaid claims, characterized by the fact that said performance parameters comprises one or more of the following parameters: a grade of service of said resources of said first or of said second network subportion of the cellular telecommunication system; a grade of service of said resources of said network portion of the cellular telecommunication system (GOS); the overall carried traffic and/or the overall carried traffic in low-symbol-rate communication channels and/or the overall carried traffic in high-symbol-rate communication channels, by said network portion of the telecommunication system, by said resources of said first network subportion and by said resources of said second network subportion of the telecommunication system; - the overflow traffic, i.e. the offered traffic component not carried by said resources of said first network subportion or by said resources of said second network subportion; the set of probabilities of occupying a certain number of communication channels of said resources of said first or of said second network subportion of the telecommunication system; the blocking probability for a service request to said second network subportion originating from dual-rate terminals; the blocking probability for a service request to said second network subportion originating from non-dual-rate (single-rate) terminals; the blocking probability for said dual-rate terminals in case of a service request forwarded to said first network subportion and, subordinately, to said second network subportion; - the blocking probability for said single-rate terminals in case of a service request forwarded to said
36 first network subportion and, subordinate^, to said second network subportion.
14. The method according to any one or more of the aforesaid claims, characterized by the fact that said telecommunication system comprises a cellular telecommunication system in which the communication channels are formatted within time-slots in compliance with the TDMA or FDMA/TDMA technology.
15. The method according to one or more of the aforesaid claims, characterized by the fact that said network portion of the telecommunication system comprises an underlay/overlay cell of a cellular telecommunication system.
16. The method according to one or more of the aforesaid claims, characterized by the fact that said resources comprise a number of time-slots, a number of carriers, a fully-used radiofrequency bandwidth, a number of antennas, a number of transceivers, a set of A-bis interface links and a set of hardware apparatus and software with which said underlay cell and/or said overlay cell is equipped.
17. The method according to one or more of the aforesaid claims, characterized by the fact that said communication channels are also able to support the voice conversations and that said service requested by the mobile terminals comprises the telephony service.
18. The method according to one or more of the aforesaid claims, characterized by the fact that:
- said high-symbol-rate communication channels comprise the full-rate traffic channels when said low-symbol-rate communication channels comprise the half-rate traffic channels;
- said high-symbol-rate communication channels comprise the half-rate-type traffic channels when said low-symbol-rate communication channels comprise the 8PSK-based traffic channels.
19. A computer system comprising a computer programmed to load and run a software program which, when loaded and run in said computer system results in carrying out the steps of the method according to any one or more of the aforesaid claims.
20. The method and the computer system for providing a performance analysis and for dimensioning the resources of said network portion by interpolation of the set of values relative to the input data and to the output data of a software program according to claim 19.
21. The method according to any one or more of the aforesaid claims, characterized in that said method is utilized to provide the dimensioning and/or the capacity estimation of the resources of said first and said second network subportion.
37
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITRG20070003 ITRG20070003A1 (en) | 2007-07-17 | 2007-07-17 | METHOD AND COMPUTER SYSTEM TO ANALYZE PERFORMANCE AND SIZE A CELL UNDERLAY / OVERLAY OF A CELL TELECOMMUNICATION SYSTEM |
| ITRG2007A000003 | 2007-07-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2009011005A1 WO2009011005A1 (en) | 2009-01-22 |
| WO2009011005A4 true WO2009011005A4 (en) | 2009-03-12 |
Family
ID=39967680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IT2008/000464 WO2009011005A1 (en) | 2007-07-17 | 2008-07-10 | Method and computer system for analyzing the performance and for dimensioning an underlay/overlay cell of a telecommunication system |
Country Status (2)
| Country | Link |
|---|---|
| IT (1) | ITRG20070003A1 (en) |
| WO (1) | WO2009011005A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018531900A (en) * | 2015-08-25 | 2018-11-01 | ノヴォ ノルディスク アー／エス | Novel insulin derivatives and their medical use |
| BR112022009510A2 (en) | 2019-12-11 | 2022-08-16 | Novo Nordisk As | INSULIN ANALOG, PHARMACEUTICAL COMPOSITION, AND, METHOD OF TREATMENT, PREVENTION, OR ALLIEF OF A DISEASE OR DISORDER OR CONDITION |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5940763A (en) * | 1997-04-23 | 1999-08-17 | Ericsson, Inc. | Enhanced preemption within a mobile telecommunications network |
| US6292664B1 (en) * | 1998-02-06 | 2001-09-18 | Telefon Aktiebolaget Lm Ericsson (Publ) | Channel quality in wireless communications |
| US6246880B1 (en) * | 1998-11-13 | 2001-06-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Determining subscriber demands on a communications system |
| DE69829320T2 (en) * | 1998-12-23 | 2006-04-13 | Telecommunication Laboratories Chunghwa Telecom Co, Ltd, Yang-Mei | FUZZY CHANNEL ASSIGNMENT CONTROLLER OF SERVICE QUALITY ENSURES |
| US6397066B1 (en) * | 1999-10-29 | 2002-05-28 | Verizon Laboratories Inc. | Fast method for capacity estimation of systems |
| JP4208828B2 (en) * | 2004-12-10 | 2009-01-14 | 三洋電機株式会社 | Time slot allocation method and base station apparatus using the same |
-
2007
- 2007-07-17 IT ITRG20070003 patent/ITRG20070003A1/en unknown
-
2008
- 2008-07-10 WO PCT/IT2008/000464 patent/WO2009011005A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| ITRG20070003A1 (en) | 2009-01-18 |
| WO2009011005A1 (en) | 2009-01-22 |
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