WO1996038012A1 - Method and apparatus for optimizing and testing a communication system - Google Patents

Method and apparatus for optimizing and testing a communication system Download PDF

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Publication number
WO1996038012A1
WO1996038012A1 PCT/US1996/004068 US9604068W WO9638012A1 WO 1996038012 A1 WO1996038012 A1 WO 1996038012A1 US 9604068 W US9604068 W US 9604068W WO 9638012 A1 WO9638012 A1 WO 9638012A1
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WO
WIPO (PCT)
Prior art keywords
optimization
testing
mobile communication
communication unit
message
Prior art date
Application number
PCT/US1996/004068
Other languages
French (fr)
Inventor
Christine Karen Ioriatti
Original Assignee
Motorola Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc. filed Critical Motorola Inc.
Priority to PL96318266A priority Critical patent/PL318266A1/en
Priority to GB9625690A priority patent/GB2305079A/en
Priority to JP8535635A priority patent/JPH10503637A/en
Priority to DE19680475T priority patent/DE19680475T1/en
Priority to AU54302/96A priority patent/AU5430296A/en
Publication of WO1996038012A1 publication Critical patent/WO1996038012A1/en
Priority to SE9604609A priority patent/SE9604609L/en
Priority to FI965258A priority patent/FI965258A/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • 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
    • H04L43/50—Testing arrangements

Definitions

  • the present invention relates generally to communication systems, and more particularly, to a method and apparatus for optimizing and testing a communication system.
  • Communication systems are well known and consist of many types including land mobile radio, cellular radiotelephone, personal communication system (PCS), and other communication system types.
  • cellular radiotelephone communication systems a number of communication cells, serviced by base transceiver stations (BTS), are typically linked to a base station controller (BSC) forming a base station system (BSS).
  • BSC base station controller
  • the BSCs are, in turn, linked to mobile switching centers (MSCs) which provide a connection between the cellular radiotelephone communication system and the public switched telephone network (PSTN) as well as interconnection of various cellular radiotelephone communication systems.
  • MSCs mobile switching centers
  • Mobile communication units operating within the communication cells utilize radio communications to transmit and receive signals with the serving BTS.
  • the signals are processed by the BTS, BSC and MSC to complete a communication transaction with a land line telephone user connected to the PSTN or to another mobile.
  • System optimization involves, among other things, setting the power output of the cell to achieve a desired cell footprint. Also, handover parameters are adjusted to ensure satisfactory handover conditions at cell boundaries.
  • test mobiles which are specialized mobile communication units and other ancillary equipment, to determine the power levels and handover boundaries.
  • test mobiles are expensive and are not user friendly typically generating information in a cryptic fashion. For example, a cell name may be bytes of hexadecimal information which a field engineer using the test mobile would have to decipher.
  • test mobiles are only capable of reporting how the mobile views the BSS. Therefore, in addition to a person operating a test mobile in the field, additional people are often required at the system operation and maintenance center or at a base station system site to record system information. All of this data must later be coordinated and evaluated.
  • FIG. 1 is block diagram of a cellular radiotelephone communication system incorporating the present invention
  • FIG. 2 is a block diagram of an optimization and testing station in accordance with a preferred embodiment of the present invention
  • FIG. 3 is a flow chart illustrating a method of optimizing and testing a communication system in accordance with a preferred embodiment of the present invention.
  • the present invention provides an apparatus and method for optimizing and testing a communication system.
  • An optimization and testing processor is coupled to a base station system element for generating optimization and testing messages containing system performance information. These messages are communicated to a standard mobile communication unit having messaging capability and a field engineer using this mobile can view the messages for evaluating system performance. Additionally, the mobile communication unit transmits performance data back to the base station system element which is recorded by the optimization and testing processor in a suitable storage medium.
  • Mobile communication unit generated data and BSS generated data either about BSS performance or measured mobile performance, may also be incorporated into an optimization and testing message and communicated back to the mobile communication unit for evaluation by the field engineer. In this manner, the use of special "test mobiles" and coordinated effort at both the test mobile and the base station system site are eliminated.
  • the present invention is described in an exemplary embodiment associated with a Groupe Special Mobile (GSM) radiotelephone communication system. It will be appreciated from the following description of a preferred embodiment that the present invention is applicable to any communication system having messaging capability.
  • GSM Groupe Special Mobile
  • radiotelephone communication system 100 includes a plurality of BTSs 21 - 23 serviced by BSCs 31 - 33 as shown which make up a BSS 50.
  • BSCs 31 - 33 are coupled to an MSC 60 which in turn is coupled to the PSTN 70.
  • Mobile communication units (one of which is shown as mobile 80) operate in communication cells serviced by BTSs 21 - 23 and communicate with BTSs 21 - 23 via radio links in a known manner. Calls originating with or terminating at mobile 80 are processed through MSC 60 to either a wireline telephone customer linked to PSTN 70 or the other radiotelephone communication system users serviced by MSC 60 or other MSCs (not shown).
  • Mobile 80 is any mobile communication unit having short messaging capabilities, such as a mobile communication unit complying with the GSM recommendation No. 4.11 for point-to-point short messaging service and GSM recommendation No. 4.12 for cell broadcast short messaging service (published by European Telecommunications Standards Institute (ETSI)).
  • GSM recommendation No. 4.11 for point-to-point short messaging service and GSM recommendation No. 4.12 for cell broadcast short messaging service published by European Telecommunications Standards Institute (ETSI)
  • ETSI European Telecommunications Standards Institute
  • OPT 110 may be coupled to any element of communication system 100, but is preferably couple to an element of the BSS 50. It should be further understood that, while shown as a separate processor, OPT may be a processor associated with the system element to which it is coupled and which is programmed to perform a set of optimization and testing instructions.
  • message generator 120 (FIG. 2) of OPT 110 formulates an optimization and testing message (FIG. 3, 302) in the form of a cell broadcast short text message in accordance with GSM recommendation No. 4.12 for broadcast by a BTS of the BSS.
  • OPT 110 operates in an equivalent manner to a short message service center within a GSM radiotelephone communication system.
  • the optimization and testing message may contain information such as cell name, cell number, frequency, power level, channel status and neighbor lists which is retrieved from the BSS by data receiver 124 (FIG. 2).
  • the text of the message is in an easy to read format.
  • the optimization and testing message is communicated (304) via BTS 22 to mobile 80 where it is displayed (306) to a field engineer who is able to view the information contained therein for, as an example, mapping cell boundaries.
  • the mobile identification numbers of particular mobile communication units being used for optimization and testing are identified to OPT 110.
  • these mobile communication units are standard mobile communication units with messaging capabilities.
  • OPT 110 monitors for registration of these mobiles in communication system 100 and upon detecting a registration of one of these mobile communication units, initiates a call trace function.
  • data receiver 122 receives performance data (308) normally communicated by the mobile communication unit to BSS 50, such as radio frequency (RF) parameters, etc. This information, and similar information measured at the BSS site, may be retained in a call trace record within memory 126 of OPT 110.
  • RF radio frequency
  • the information is communicated to message generator 122 for incorporation into an optimization and testing message and thereby reported to the mobile communication unit. Since this message is intended for a specific mobile communication unit, i.e., it contains information specific to the performance of that one mobile communication unit, the format of such a message is preferably in accordance GSM recommendation No. 4.11 for point-to-point short text messages.
  • the optimization and testing message may additionally contain additional performance data, such as data reported by the mobile to the BSS site, and the like. In this manner the field engineer can evaluate the appearance of the mobile communication unit to the serving BSS site without having additional personnel located at an element of BSS 50.
  • the optimization and testing message may contain data from the handover algorithm operating within BSS 50.
  • the field engineer moves the mobile communication unit within communication system 100, she may watch, real time, the cells through which the mobile communication unit is transitioning through and the handover parameters as they are generated.
  • this data is recorded at OPT 110 for later evaluation, and because the message generator 122 retrieves information directly from memory 126, a manual operator is not required at BSS 50 for inputting messages in the standard short messaging format.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Optical Communication System (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

The present invention provides an apparatus (110) and method (300) for optimizing and testing a communication system (100). An optimization and testing processor is coupled to a base station system element (31) for generating optimization and testing messages containing system performance information. These messages are communicated to a standard mobile communication unit (80) having messaging capability and a field engineer using this mobile can view the messages for evaluating system performance. Additionally, the mobile communication unit transmits performance data back to the base station system element which is received and recorded by the optimization and testing processor in a suitable storage medium (124/126). The mobile communication unit generated data may also be incorporated into an optimization and testing message and communicated back to the mobile communication unit for evaluation by the field engineer.

Description

METHOD AND APPARATUS FOR OPTIMIZING AND TESTING A COMMUNICATION SYSTEM
FIELD OF THE INVENTION
The present invention relates generally to communication systems, and more particularly, to a method and apparatus for optimizing and testing a communication system.
BACKGROUND OF THE INVENTION
Communication systems are well known and consist of many types including land mobile radio, cellular radiotelephone, personal communication system (PCS), and other communication system types. In, for example, cellular radiotelephone communication systems, a number of communication cells, serviced by base transceiver stations (BTS), are typically linked to a base station controller (BSC) forming a base station system (BSS). The BSCs are, in turn, linked to mobile switching centers (MSCs) which provide a connection between the cellular radiotelephone communication system and the public switched telephone network (PSTN) as well as interconnection of various cellular radiotelephone communication systems. Mobile communication units operating within the communication cells utilize radio communications to transmit and receive signals with the serving BTS. The signals are processed by the BTS, BSC and MSC to complete a communication transaction with a land line telephone user connected to the PSTN or to another mobile.
A task associated with installing and activating a communication system, for example a cellular radiotelephone communication system, is referred to as system optimization. System optimization involves, among other things, setting the power output of the cell to achieve a desired cell footprint. Also, handover parameters are adjusted to ensure satisfactory handover conditions at cell boundaries.
Current techniques for performing system optimization require special equipment, including such devices as "test mobiles" which are specialized mobile communication units and other ancillary equipment, to determine the power levels and handover boundaries. Unfortunately, these test mobiles are expensive and are not user friendly typically generating information in a cryptic fashion. For example, a cell name may be bytes of hexadecimal information which a field engineer using the test mobile would have to decipher. Also, these test mobiles are only capable of reporting how the mobile views the BSS. Therefore, in addition to a person operating a test mobile in the field, additional people are often required at the system operation and maintenance center or at a base station system site to record system information. All of this data must later be coordinated and evaluated. As systems expand geographically and more microcell systems are installed, with associated cell boundaries, the optimization and testing task becomes more daunting. Thus, there is a need for an apparatus and method of easily evaluating cell operating parameters which reduces the number of individuals required for optimization and testing and eliminates the requirement for special test equipment.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is block diagram of a cellular radiotelephone communication system incorporating the present invention; FIG. 2 is a block diagram of an optimization and testing station in accordance with a preferred embodiment of the present invention;
FIG. 3 is a flow chart illustrating a method of optimizing and testing a communication system in accordance with a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S)
The present invention provides an apparatus and method for optimizing and testing a communication system. An optimization and testing processor is coupled to a base station system element for generating optimization and testing messages containing system performance information. These messages are communicated to a standard mobile communication unit having messaging capability and a field engineer using this mobile can view the messages for evaluating system performance. Additionally, the mobile communication unit transmits performance data back to the base station system element which is recorded by the optimization and testing processor in a suitable storage medium. Mobile communication unit generated data and BSS generated data, either about BSS performance or measured mobile performance, may also be incorporated into an optimization and testing message and communicated back to the mobile communication unit for evaluation by the field engineer. In this manner, the use of special "test mobiles" and coordinated effort at both the test mobile and the base station system site are eliminated.
The present invention is described in an exemplary embodiment associated with a Groupe Special Mobile (GSM) radiotelephone communication system. It will be appreciated from the following description of a preferred embodiment that the present invention is applicable to any communication system having messaging capability.
Referring to FIG. 1, radiotelephone communication system 100 includes a plurality of BTSs 21 - 23 serviced by BSCs 31 - 33 as shown which make up a BSS 50. BSCs 31 - 33 are coupled to an MSC 60 which in turn is coupled to the PSTN 70. Mobile communication units (one of which is shown as mobile 80) operate in communication cells serviced by BTSs 21 - 23 and communicate with BTSs 21 - 23 via radio links in a known manner. Calls originating with or terminating at mobile 80 are processed through MSC 60 to either a wireline telephone customer linked to PSTN 70 or the other radiotelephone communication system users serviced by MSC 60 or other MSCs (not shown).
Mobile 80 is any mobile communication unit having short messaging capabilities, such as a mobile communication unit complying with the GSM recommendation No. 4.11 for point-to-point short messaging service and GSM recommendation No. 4.12 for cell broadcast short messaging service (published by European Telecommunications Standards Institute (ETSI)). Thus, mobile 80 is operable to receive short text messages from the serving site of the BSS 50 and to display these short text messages to the user of the mobile.
Further shown in FIG. 1 is optimization and testing processor (OPT) 110 coupled to BSC 31. It should be appreciated that OPT 110 may be coupled to any element of communication system 100, but is preferably couple to an element of the BSS 50. It should be further understood that, while shown as a separate processor, OPT may be a processor associated with the system element to which it is coupled and which is programmed to perform a set of optimization and testing instructions.
When enabled, message generator 120 (FIG. 2) of OPT 110 formulates an optimization and testing message (FIG. 3, 302) in the form of a cell broadcast short text message in accordance with GSM recommendation No. 4.12 for broadcast by a BTS of the BSS. In this manner, OPT 110 operates in an equivalent manner to a short message service center within a GSM radiotelephone communication system. The optimization and testing message may contain information such as cell name, cell number, frequency, power level, channel status and neighbor lists which is retrieved from the BSS by data receiver 124 (FIG. 2). Preferably the text of the message is in an easy to read format. The optimization and testing message is communicated (304) via BTS 22 to mobile 80 where it is displayed (306) to a field engineer who is able to view the information contained therein for, as an example, mapping cell boundaries.
In a preferred embodiment of the present invention, the mobile identification numbers of particular mobile communication units being used for optimization and testing are identified to OPT 110. Again, these mobile communication units are standard mobile communication units with messaging capabilities. OPT 110 monitors for registration of these mobiles in communication system 100 and upon detecting a registration of one of these mobile communication units, initiates a call trace function. During the call trace function, data receiver 122 receives performance data (308) normally communicated by the mobile communication unit to BSS 50, such as radio frequency (RF) parameters, etc. This information, and similar information measured at the BSS site, may be retained in a call trace record within memory 126 of OPT 110. Also, in the preferred embodiment, the information is communicated to message generator 122 for incorporation into an optimization and testing message and thereby reported to the mobile communication unit. Since this message is intended for a specific mobile communication unit, i.e., it contains information specific to the performance of that one mobile communication unit, the format of such a message is preferably in accordance GSM recommendation No. 4.11 for point-to-point short text messages. In addition to reporting the measured performance data, the optimization and testing message may additionally contain additional performance data, such as data reported by the mobile to the BSS site, and the like. In this manner the field engineer can evaluate the appearance of the mobile communication unit to the serving BSS site without having additional personnel located at an element of BSS 50. For example, the optimization and testing message may contain data from the handover algorithm operating within BSS 50. As the field engineer moves the mobile communication unit within communication system 100, she may watch, real time, the cells through which the mobile communication unit is transitioning through and the handover parameters as they are generated. Moreover, this data is recorded at OPT 110 for later evaluation, and because the message generator 122 retrieves information directly from memory 126, a manual operator is not required at BSS 50 for inputting messages in the standard short messaging format.
The many advantages, features and broad scope of the present invention, such as reduced equipment cost and required human resources for accomplishing cell optimization, will be readily appreciated by one of ordinary skill in the art from the foregoing description of a preferred embodiment and the subjoined claims. We Claim:

Claims

1. A system for optimizing and testing a radiotelephone communication system, the radiotelephone communication system comprising a base station system having at least one base station controller and a plurality of base transceiver stations coupled to the base station controller and providing radiotelephone communication service within an associated service coverage area, the system comprising: a mobile communication unit having messaging capability in communication with at least one of the plurality of base transceiver stations; and an optimization and testing processor coupled to the base station controller, the optimization and testing processor comprising a message generator and a data receiver.
2. The system of claim 1 wherein the optimization and testing processor further comprises a storage medium.
3. A cell site optimization and tester comprising: means for generating an optimization and testing message and communicating the optimization and testing message to a base station system element servicing a cell of a communication system; and a mobile communication unit in communication with the base station system element, the mobile communication unit including means for receiving the optimization and testing message and means for communicating the optimization and testing message to a user.
4. The cell site optimization and tester of claim 3 wherein the optimization and testing message contains at least one of the group of data comprising: a cell name, a cell number, a frequency, a power level, a channel status, and a neighbor list.
5. The optimization and tester of claim 3 wherein the mobile communication unit further comprises means for communicating performance date to the base station system element; the cell site optimization and tester further comprises means for receiving data from the base station system element; and the means for generating an optimization and testing message is operable to generate an optimization and testing message comprising the performance data.
6. A method of cell site optimization and testing comprising: generating an optimization and testing message; and communicating the optimization and testing message to a mobile communication unit; and displaying the optimization and testing message at the mobile communication unit.
7. The method of claim 6 wherein the step of generating an optimization and testing message comprises generating a short text message.
8. The method of claim 6 wherein the step of generating an optimization and testing message comprises generating an optimization and testing message containing at least one of the group of data comprising: a cell name, a cell number, a frequency, a power level, a channel status, and a neighbor list.
9. The method of claim 6 further comprising the step of receiving performance data from the mobile communication unit and echoing the performance data back to the mobile communication unit in the optimization and testing message.
10. The method of claim 6 further comprising the step of measuring mobile communication unit performance data at a base station system element and reporting the performance data to the mobile communication unit in the optimization and testing message.
PCT/US1996/004068 1995-05-26 1996-03-26 Method and apparatus for optimizing and testing a communication system WO1996038012A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PL96318266A PL318266A1 (en) 1995-05-26 1996-03-26 Method of and apparatus for optimising and testing a communication system
GB9625690A GB2305079A (en) 1995-05-26 1996-03-26 Method and apparatus for optimizing and testing a communications system
JP8535635A JPH10503637A (en) 1995-05-26 1996-03-26 Method and apparatus for optimizing and testing a communication system
DE19680475T DE19680475T1 (en) 1995-05-26 1996-03-26 Method and device for optimizing and testing a communication system
AU54302/96A AU5430296A (en) 1995-05-26 1996-03-26 Method and apparatus for optimizing and testing a communication system
SE9604609A SE9604609L (en) 1995-05-26 1996-12-16 Method and apparatus for optimizing and testing a communication system
FI965258A FI965258A (en) 1995-05-26 1996-12-30 Method and apparatus for optimizing and testing a communication system

Applications Claiming Priority (2)

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US45245795A 1995-05-26 1995-05-26
US08/452,457 1995-05-26

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WO1996038012A1 true WO1996038012A1 (en) 1996-11-28

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AU (1) AU5430296A (en)
CA (1) CA2194787A1 (en)
DE (1) DE19680475T1 (en)
FI (1) FI965258A (en)
FR (1) FR2734684A1 (en)
GB (1) GB2305079A (en)
IL (1) IL117787A0 (en)
IT (1) IT1285191B1 (en)
PL (1) PL318266A1 (en)
SE (1) SE9604609L (en)
WO (1) WO1996038012A1 (en)

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WO1998043455A2 (en) * 1997-03-25 1998-10-01 Northern Telecom Limited Method and wireless terminal for monitoring communications and providing network with terminal operation information
US6169883B1 (en) 1996-03-07 2001-01-02 Nokia Telecommunications Oy Remote test of a subscriber connection in a system implementing a wireless subscriber connection
WO2003010987A1 (en) * 2001-07-24 2003-02-06 Motorola Inc Network element, system, method, computer program and data carrier for network optimisation

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KR970008950A (en) * 1995-07-21 1997-02-24 김광호 Construction method of communication terminal maintenance system using paging system
GB2344489B (en) * 1998-09-11 2003-09-10 Racal Instruments Ltd Methods and apparatus for testing RF transmission in a mobile telecommunication system
US6438117B1 (en) * 2000-01-07 2002-08-20 Qualcomm Incorporated Base station synchronization for handover in a hybrid GSM/CDMA network
DE10055792A1 (en) * 2000-11-10 2002-05-23 R & S Bick Mobilfunk Gmbh Procedure for checking a radio connection
GB2419255A (en) * 2004-10-14 2006-04-19 Agilent Technologies Inc Modifying an aggregate test in a network probe
US8780732B2 (en) * 2008-03-18 2014-07-15 Qualcomm Incorporated Method of network management by assistance from terminal using control-plane signaling between terminal and network

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US5095500A (en) * 1989-12-07 1992-03-10 Motorola, Inc. Cellular radiotelephone diagnostic system
US5307510A (en) * 1989-09-29 1994-04-26 Televerket Method for determining the degree of coverage in a mobile radio system
US5381444A (en) * 1991-10-31 1995-01-10 Fujitsu Limited Radio environment measuring system
US5428821A (en) * 1991-06-28 1995-06-27 Motorola, Inc. Base site with remote calibration capability

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US5307510A (en) * 1989-09-29 1994-04-26 Televerket Method for determining the degree of coverage in a mobile radio system
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US5428821A (en) * 1991-06-28 1995-06-27 Motorola, Inc. Base site with remote calibration capability
US5381444A (en) * 1991-10-31 1995-01-10 Fujitsu Limited Radio environment measuring system

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US6169883B1 (en) 1996-03-07 2001-01-02 Nokia Telecommunications Oy Remote test of a subscriber connection in a system implementing a wireless subscriber connection
WO1998043455A2 (en) * 1997-03-25 1998-10-01 Northern Telecom Limited Method and wireless terminal for monitoring communications and providing network with terminal operation information
WO1998043455A3 (en) * 1997-03-25 1999-04-01 Northern Telecom Ltd Method and wireless terminal for monitoring communications and providing network with terminal operation information
US6088588A (en) * 1997-03-25 2000-07-11 Nortel Networks Corporation Method and wireless terminal for monitoring communications and providing network with terminal operation information
WO2003010987A1 (en) * 2001-07-24 2003-02-06 Motorola Inc Network element, system, method, computer program and data carrier for network optimisation
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Also Published As

Publication number Publication date
IL117787A0 (en) 1996-08-04
IT1285191B1 (en) 1998-06-03
FI965258A0 (en) 1996-12-30
FI965258A (en) 1996-12-30
ITRM960330A1 (en) 1997-11-13
PL318266A1 (en) 1997-05-26
FR2734684A1 (en) 1996-11-29
CA2194787A1 (en) 1996-11-28
ITRM960330A0 (en) 1996-05-13
GB2305079A (en) 1997-03-26
SE9604609D0 (en) 1996-12-16
GB9625690D0 (en) 1997-01-29
JPH10503637A (en) 1998-03-31
DE19680475T1 (en) 1997-07-17
AU5430296A (en) 1996-12-11
SE9604609L (en) 1997-03-24

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