1、 International Telecommunication Union ITU-T L.80TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (05/2008) SERIES L: CONSTRUCTION, INSTALLATION AND PROTECTION OF CABLES AND OTHER ELEMENTS OF OUTSIDE PLANT Operations support system requirements for infrastructure and network elements management using
2、 ID technology Recommendation ITU-T L.80 Rec. ITU-T L.80 (05/2008) i Recommendation ITU-T L.80 Operations support system requirements for infrastructure and network elements management using ID technology Summary Telecommunication networks require proper allocation of network elements and planned pe
3、riodic maintenance to deliver services quickly and efficiently, to minimize out-of-service risk and to guarantee service level agreement satisfaction. It is particularly important to focus on the issue of optical fibre-based infrastructures and the related huge amount of transmitted information. Net
4、work elements that undergo allocation and maintenance operations can be of several types and can differ in terms of position, dimensions, services, field work and scheduled times for periodic planned maintenance. Identification data (ID) technology can be applied to solutions that focus on the prope
5、r management of infrastructure and network elements. The ID uniquely identifies an element of interest in terms of its allocation and maintenance. Source Recommendation ITU-T L.80 was approved on 29 May 2008 by ITU-T Study Group 6 (2005-2008) under Recommendation ITU-T A.8 procedure. ii Rec. ITU-T L
6、.80 (05/2008) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is respon
7、sible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the IT
8、U-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborativ
9、e basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mand
10、atory provisions (to ensure e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. Th
11、e use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU take
12、s no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual proper
13、ty, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2009 All rights reserved.
14、No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T L.80 (05/2008) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 1 4 Abbreviations and acronyms 1 5 Operations support system 2 5.1 Data communication network. 2 5.
15、2 Database . 3 5.3 User interface 3 Appendix I Italian experience regarding RFID tag solution for telephony poles. 5 Rec. ITU-T L.80 (05/2008) 1 Recommendation ITU-T L.80 Operations support system requirements for infrastructure and network elements management using ID technology 1 Scope This Recomm
16、endation deals with support systems for infrastructure and network elements management using ID technology for telecommunication networks. In particular, it describe system architecture and points out functional requirements for data transmission, database access and interoperability for an operatio
17、ns support system (OSS) that enables operations, administration and maintenance of network elements. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publicatio
18、n, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the cur
19、rently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T L.64 Recommendation ITU-T L.64 (2007), ID tag requirements for infrastructure and network elements mana
20、gement. ITU-T L.69 Recommendation ITU-T L.69 (2007), Personal digital assistant requirements and relevant data structure for infrastructure and network elements management. 3 Definitions None. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: APN Access
21、Point Node DCN Data Communication Network GPRS Global Packet Radio Service GSM Global System for Mobile communication HTTP HyperText Transfer Protocol ID Identification Data NE Network Element OSS Operations Support System PDA Personal Digital Assistant RFID Radio Frequency Identification TMN Teleco
22、mmunications 2 Rec. ITU-T L.80 (05/2008) VPN Virtual Private Network XML eXtensible Markup Language 5 Operations support system An OSS generally refers to the system or systems that perform management, inventory, planning, engineering and maintenance functions for communications service providers an
23、d their networks. An OSS for ID of network elements (ID OSS) can be defined as the system for management of NEs identification supporting other OSSs functions such as maintenance and inventory. It is recommended to use an ID OSS to support operations, administration and maintenance of NEs that featu
24、re ID technology. A general system architecture that defines logical relations between an ID OSS and other components of the network management system of the service provider is illustrated in Figure 1. Terminals and devices other than PDAs can be used. Figure 1 Example of system architecture for ID
25、 OSS Each NE administered by an ID OSS should have a unique ID. An ID OSS should have a database to store NE information. An ID OSS should have a user interface to support database access and data processing. An ID OSS typically is supported by a DCN that enables communication between different part
26、s of the system and with other OSSs. An ID OSS should provide secure communication (e.g., authentication and/or data encryption) when confidential data are transferred through public networks: between a database and a PDA, between a database and other OSSs, between a database and a user interface. 5
27、.1 Data communication network A DCN is the set of technological instruments that enables connection and communication between different components inside an ID OSS and between an ID OSS and other components in the network management system. A DCN could be based on both private and public networks. D
28、CN ID OSS USER INTERFACE DATABASE PDA OSS Inventory OSS Maintenance OSS others Rec. ITU-T L.80 (05/2008) 3 A DCN should support communication between a PDA and an ID OSS to enable database content updating and information retrieving on the PDA. An ID OSS and a PDA must be in communication at least w
29、hen data transfer is needed. It means that in the work area, a PDA can be used in online or off-line mode. In the first scenario, data transfer can be performed in real time, typically using a wireless connection. In the second one, data transfer is performed before and/or after activity in the work
30、 area using a wired or wireless connection. Such a scenario is typical in work areas where wireless communication is not allowed. A DCN should provide a connection between a user interface and a database to enable data access and processing. A DCN should provide a connection to external OSSs when in
31、formation exchange is required. An ID OSS should provide secure communication (e.g., authentication and/or data encryption) when confidential data are transferred through public networks: between a database and a PDA, between a database and other OSSs, between a database and a user interface. 5.2 Da
32、tabase A database is the OSSs component used to store data records of each NE that features ID technology. Each network element administered by the OSS and stored in the database should have a unique distinguishing ID. The First step is the creation of a network element data record in the database.
33、From this moment on, as a result of an action executed on a network element, information in the database is updated. It is suggested to add and not substitute old data values with new ones in case it is needed to trace activity and keep history on each NE (network evolution). It is suggested to make
34、 a clear distinction between physical and logical NEs in the database when it is needed. A physical NE is the specific material, while a logical NE is typically defined by a function in the network. A database should support administration of both individual NEs and an aggregation of NEs that share
35、one or more specific data values in their records (e.g., all the fibres terminated on a rack). A database could be controlled by monitoring algorithms in real-time or off-line mode. Real-time monitoring is designed to check data before database content updates. Off-line monitoring is designed to che
36、ck database content. Alarms should be triggered when incongruent information is detected. A database should be accessible by operators to perform queries. A database should be accessible from other OSSs if their procedures require retrieval of such information for other purposes (e.g., work force ma
37、nagement). 5.3 User interface A user interface is the OSSs component that enables users to access and process database content inside a computer system. A user interface could be available wherever users need to interact with the database. It is suggested to use a technology that enables database ac
38、cess even from public networks if it is needed. User interface access should be protected using a log-on procedure. Such a procedure enables user activity tracking and user profile-based access. A user profile definition is suggested because it limits user access to data content and processing funct
39、ions. Typically, the administrator profile has complete access to data and functions. 4 Rec. ITU-T L.80 (05/2008) It is recommended that information on a network element can be retrieved from the database using just its unique ID. A user interface should support query functions. For each query funct
40、ion, the user should be enabled to set as many filters as data fields are defined for each network element in the database. It should be possible to use multiple filters at the same time. A user interface could support exporting functions in case it is needed to extract information from the database
41、. In this way, a user can manipulate such data with third-party software. A user interface could display an alert if information retrieved from the database has still not been checked by monitoring algorithms. As a valid means of support, a user interface could be linked to cartographical maps where
42、 the NE position can be displayed (if geographical coordinates are available in the database). Rec. ITU-T L.80 (05/2008) 5 Appendix I Italian experience regarding RFID tag solution for telephony poles (This appendix does not form an integral part of this Recommendation) In Italy, RFID technology for
43、 maintenance support has been tested on the poles used in the wireline access network throughout the country where wooden poles represent almost the totality. The first step was to trace the in-field maintenance actions and to collect more information on these items, in order to better understand ca
44、uses of poles turnover. On one side, better knowledge of the pole network means avoiding random and massive monitoring actions, better spare parts management and network planning. On the other side, information maintenance can be certified because the tag is on the pole and stores information of the
45、 latest actions (date, operator code, etc.). Typical periodic maintenance requires checking all poles inside a network area. More than 40 000 poles have been checked in several network areas spread across the national territory. In this scenario, the following solution has been adopted for the OSS,
46、as illustrated in Figure I.1. Figure I.1 Simplified system architecture for ID OSS A PDA communicates using a GSM/GPRS network. A GPRS connection is the first choice, if available, and is performed through a private APN directly connected to the ID OSS private network. When a GPRS connection is not
47、available, a data GSM connection is used. If communication is delivered through a public network (e.g., Internet), confidential information is protected. Communications between a PDA and an ID OSS is based on HTTP and XML in a client/server architecture. Every access from a PDA is traced in a log fi
48、le. Data transmitted from a PDA and regarding NEs are stored on a SQL server database. NE in a database can be active or passive: active NE is currently used in the network, while passive NE has been dismissed, but information regarding it is still available in the database. A user interface applica
49、tion has been developed using a technology based on standards. This application is accessible both inside an intranet and through an extranet. An Internet browser is the only software required for the user terminal to access this application. HTTPS must be supported to provide secure connection. GSM/GPRS MOBILE NETWORK CORPORATENETWORK APPLICATION SERVER DATABASE SERVER INTERNET IntranetExtranet6 Rec. ITU-T L.80 (05/2008) Log-on is based on different user profiles (username and password) that enable different functions inside the application. The user interface is divided into
