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    ATIS 0500011-2007 Location Technology Performance Data - Define Topologies & Data Collection.pdf

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    ATIS 0500011-2007 Location Technology Performance Data - Define Topologies & Data Collection.pdf

    1、 ATIS-0500011 Define Topologies & Data Collection Methodology Technical Report The Alliance for Telecommunication Industry Solutions (ATIS) is a technical planning and standards development organization that is committed to rapidly developing and promoting technical and operations standards for the

    2、communications and related information technologies industry worldwide using a pragmatic, flexible and open approach. Over 1,100 participants from more than 350 communications companies are active in ATIS 23 industry committees and its Incubator Solutions Program. NOTE - The users attention is calle

    3、d to the possibility that compliance with this standard may require use of an invention covered by patent rights. By publication of this standard, no position is taken with respect to the validity of this claim or any patent rights in connection therewith. The patent holder has, however, filed a sta

    4、tement of willingness to grant license under these rights on reasonable and nondiscriminatory terms and conditions to applicants desiring to obtain such a license. Details may be obtained from the publisher. ATIS-0500011, Define Topologies & Data Collection Methodology Is an ATIS standard developed

    5、by the Emergency Services Methodologies (ESM)(G) Subcommittee under the ATIS Emergency Services Interconnection Forum Committee (ESIF). Published by Alliance for Telecommunications Industry Solutions 1200 G Street, NW, Suite 500 Washington, DC 20005 Copyright 2007 by Alliance for Telecommunications

    6、Industry Solutions All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. For information contact ATIS at 202.628.6380. ATIS is online at . Printed in the United States of

    7、America. 1 1 INTRODUCTION The present document addresses the needs identified in the ATIS/ESIF Issue #44, which asks for ESIF SMEs to define the topologies in which representative location accuracy data should be aggregated, and the methodology to accomplish this data analysis. 2 METHODOLOGY Through

    8、out phase 2 deployments Wireless Carriers have accumulated a wealth of location accuracy data, potentially in all the defined usage environments. The methodology for this report consists of mining existing location accuracy data. In the majority of cases, there should be no need for additional testi

    9、ng, specifically to fulfill the requirements of this issue. Each Tier I and II Wireless Carrier shall select geographic locations where the location technology is enabled, that fulfill each of the described Wireless Usage Environments. A number of randomly selected location accuracy data points coll

    10、ected during compliance or maintenance testing are aggregated for each Usage Environment. The methodologies described in the ESIF Technical Report ATIS-050001 “High Level Requirements for Accuracy Testing Methodologies” document may be used to determine the minimum number of data points. The data ag

    11、gregated for use in this report must be representative of current performance. 3 DEFINITIONS OF WIRELESS USAGE ENVIRONMENTS Dense Urban: Typically downtown environments in larger urbanized cities where high rises and skyscrapers on sides of 1 to 3 lane streets are observed. Urban canyons are commonl

    12、y encountered. Very high cell site concentration is also observed. Cell site radii are generally under half a mile. Urban: High population density where multi-story apartment and office buildings are observed. Some buildings as high as 10 to 15 stories situated on 2 to 4 lane roads outline the envir

    13、onment. High site concentration due to capacity requirements and higher signal penetration margins are encountered. Cell radii are typically in the 0.5 1 mile range. Suburban: Medium population density with 1-2 story residential homes, occasional 2-3 story buildings and multi-level shopping centers.

    14、 Area is 2 typically covered by a few cell sites. Cell site radii are typically in the 1 2 mile range. Rural: Geographical area with low population density and much open or forested space. Majority of area is covered by one cell site. Cell radii are generally more than 2 miles. Cell deployments alon

    15、g sparsely populated highways which have sites 4 or more miles apart belong to this category. Note: Within each of the above Usage Environments, testing may be conducted indoors or outdoors. Since an Indoor setting can range widely in its impact on wireless operation depending on the structures, the

    16、 testing entity may encounter the following types of indoor settings: A. Low penetration loss: 1 or 2 story house or building made of wood or brick surrounded by similar buildings. B. Moderate penetration loss: First or second floor of 4 to 8 story concrete building with metal frame surrounded with

    17、ample separation by similar or shorter buildings. Locations away from the outer walls and windows are selected. C. High penetration loss: Underground parking lots of shopping centers, inside elevator, and inner offices of high rise buildings. 1.1 Characteristics of Indoors within the Usage Environme

    18、nts NRIC VII, Focus Group 1A recommended that 5% of the test calls for location accuracy testing be placed from indoor locations. Due to the random nature of test point selection, the indoor test calls will be distributed throughout the various categories of usage environments. The usage environment

    19、s for the one-time performance report may include an aggregate of the location estimate for all of the test calls that occur within that usage environment. Wireless carriers may, optionally, state indoor versus outdoor test point accuracy estimates as subcategories under each usage environment. The

    20、testing entity may choose a reporting strategy that includes indoor test calls as part of the overall test calls performed for the major usage environments, namely, the rural, suburban, urban and dense urban environments. In this case, the indoor test calls included in each of these four usage envir

    21、onments should, when possible to identify from existing data, reflect the typical nature of indoor usage in each environment. a. Indoor calls in a rural environment should generally be in settings that create low penetration loss. 3 b. Indoor calls in a suburban environment should have a mix of indo

    22、or calls in settings with low and moderate penetration losses. The exact ratio is up to the body that performs the tests and would reflect the nature of the network under test and its typical usage in the given test environment. However, a reasonable guideline is 25% moderate loss and 75% low penetr

    23、ation loss. c. Indoor calls in an urban environment should have a mix of indoor calls in settings with low, moderate and high penetration losses. The exact ratio is up to the body that performs the tests, however a reasonable guideline in this case would be 15% high penetration loss, 50% moderate lo

    24、ss and 35% low penetration loss. d. Indoor calls in a dense urban environment should also have a mix of indoor calls in settings with low, moderate and high penetration losses. The exact ratio is again up to the body that performs the tests, however a reasonable guideline in this case would be 25% h

    25、igh penetration loss, 50% moderate loss and 25% low penetration loss. 4 LOCATION TECHNOLOGIES The Carriers shall report the performance of each type of location technology implemented in their networks. 5 REPORT Once each carrier has compiled the statistical information for all usage environments, a

    26、 report can be submitted to a mutually agreeable third party, who will compile all the results, and aggregate the statistics for carriers using the same location technology. The third party will compile a report that shall be a matrix of Location Technologies and the defined Usage Environments, in a

    27、 format similar to the table below. The report shall clearly describe the method used for classifying the test calls among the usage environments. 4 Location Technology Assisted GPS (CDMA)Assisted GPS (iDEN) U-TDOA (GSM) U-TDOA (TDMA) Other (GSM) Other (TDMA)Usage Environment Performance Metric 67% Accuracy Dense Urban 95% Accuracy 67% Accuracy Urban 95% Accuracy 67% Accuracy Suburban 95% Accuracy 67% Accuracy Rural 95% Accuracy


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