TIA TSB-162-2006 Telecommunications Cabling Guidelines for Wireless Access Points《无线接入点的电信接缆指南》.pdf

1、 TIA TELECOMMUNICATIONS SYSTEMS BULLETIN Telecommunications Cabling Guidelines for Wireless Access Points TSB-162 March 2006 TELECOMMUNICATIONS INDUSTRY ASSOCIATION The Telecommunications Industry Association represents the communications sector of Copyright Telecommunications Industry Association P

2、rovided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE OF COPYRIGHT This document is copyrighted by the TIA. Reproduction of these documents either in hard copy or soft copy (including posting on the web) is prohibited without c

3、opyright permission. For copyright permission to reproduce portions of this document, please contact TIA Standards Department or go to the TIA website (www.tiaonline.org) for details on how to request permission. Details are located at: http:/www.tiaonline.org/standards/catalog/info.cfm#copyright OR

4、 Telecommunications Industry Association Standards (b) there is no assurance that the Document will be approved by any Committee of TIA or any other body in its present or any other form; (c) the Document may be amended, modified or changed in the standards development or any editing process. The us

5、e or practice of contents of this Document may involve the use of intellectual property rights (“IPR”), including pending or issued patents, or copyrights, owned by one or more parties. TIA makes no search or investigation for IPR. When IPR consisting of patents and published pending patent applicat

6、ions are claimed and called to TIAs attention, a statement from the holder thereof is requested, all in accordance with the Manual. TIA takes no position with reference to, and disclaims any obligation to investigate or inquire into, the scope or validity of any claims of IPR. TIA will neither be a

7、party to discussions of any licensing terms or conditions, which are instead left to the parties involved, nor will TIA opine or judge whether proposed licensing terms or conditions are reasonable or non-discriminatory. TIA does not warrant or represent that procedures or practices suggested or prov

8、ided in the Manual have been complied with as respects the Document or its contents. If the Document contains one or more Normative References to a document published by another organization (“other SSO”) engaged in the formulation, development or publication of standards (whether designated as a st

9、andard, specification, recommendation or otherwise), whether such reference consists of mandatory, alternate or optional elements (as defined in the TIA Engineering Manual, 4thedition) then (i) TIA disclaims any duty or obligation to search or investigate the records of any other SSO for IPR or lett

10、ers of assurance relating to any such Normative Reference; (ii) TIAs policy of encouragement of voluntary disclosure (see Engineering Manual Section 6.5.1) of Essential Patent(s) and published pending patent applications shall apply; and (iii) Information as to claims of IPR in the records or public

11、ations of the other SSO shall not constitute identification to TIA of a claim of Essential Patent(s) or published pending patent applications. TIA does not enforce or monitor compliance with the contents of the Document. TIA does not certify, inspect, test or otherwise investigate products, designs

12、or services or any claims of compliance with the contents of the Document. ALL WARRANTIES, EXPRESS OR IMPLIED, ARE DISCLAIMED, INCLUDING WITHOUT LIMITATION, ANY AND ALL WARRANTIES CONCERNING THE ACCURACY OF THE CONTENTS, ITS FITNESS OR APPROPRIATENESS FOR A PARTICULAR PURPOSE OR USE, ITS MERCHANTABI

13、LITY AND ITS NONINFRINGEMENT OF ANY THIRD PARTYS INTELLECTUAL PROPERTY RIGHTS. TIA EXPRESSLY DISCLAIMS ANY AND ALL RESPONSIBILITIES FOR THE ACCURACY OF THE CONTENTS AND MAKES NO REPRESENTATIONS OR WARRANTIES REGARDING THE CONTENTS COMPLIANCE WITH ANY APPLICABLE STATUTE, RULE OR REGULATION, OR THE SA

14、FETY OR HEALTH EFFECTS OF THE CONTENTS OR ANY PRODUCT OR SERVICE REFERRED TO IN THE DOCUMENT OR PRODUCED OR RENDERED TO COMPLY WITH THE CONTENTS. Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without lice

15、nse from IHS-,-,-TIA SHALL NOT BE LIABLE FOR ANY AND ALL DAMAGES, DIRECT OR INDIRECT, ARISING FROM OR RELATING TO ANY USE OF THE CONTENTS CONTAINED HEREIN, INCLUDING WITHOUT LIMITATION ANY AND ALL INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF BUSINESS, LOSS OF

16、 PROFITS, LITIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF

17、, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TSB-162 Telecommunications Cabling Guidelines for Wi

18、reless Access Points TABLE OF CONTENTS 1 INTRODUCTION.1 2 PURPOSE AND SCOPE 1 3 REFERENCES1 4 DEFINITIONS, ACRONYMS AND ABBREVIATIONS 2 4.1 Definitions2 4.2 Acronyms and abbreviations.2 5 TELECOMMUNICATIONS OUTLET LOCATIONS.2 5.1 Cell size.2 5.1.1 General2 5.1.2 Typical uniform cell size 4 5.2 Share

19、d media access considerations4 6 EXTERNAL ANTENNAS.5 7 POWER OPTIONS .5 7.1 General .5 7.2 Remote power.5 7.3 Local power.6 8 HORIZONTAL CABLING 6 9 ADMINISTRATION AND LABELING 7 10 SEPARATION OF POWER BRANCH CIRCUITS AND TELECOMMUNICATIONS CABLING 7 11 MOUNTING AND INSTALLATION .7 11.1 Shared tenan

20、t considerations7 11.2 Wireless access point mounting options .7 11.2.1 Wall-mount above drop ceiling 7 11.2.2 Wall-mount below drop ceiling 8 11.2.3 In-the-grid ceiling mount8 12 PERFORMANCE AND TESTING GUIDELINES 9 12.1 Balanced twisted pair cabling9 12.1.1 Channel testing guidelines 9 12.1.2 Perm

21、anent link testing guidelines9 12.2 Optical fiber cabling.10 Annex A (informative) Other wireless access point cabling options .11 i Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-

22、,-,-TSB-162 LIST OF FIGURES Figure 1 Cell sizing (wireless access point placed anywhere inside the cell) 3 Figure 2 Typical uniform cell size.4 Figure 3 Additional TO and wireless access point in cell.5 Figure 4 Typical wireless access point with remote power from a switch6 Figure 5 Typical wireless

23、 access point with remote power from a mid-span device6 Figure 6 Typical wireless access point with local power6 Figure 7 Typical wall-mount above drop ceiling.7 Figure 8 Typical wall-mount below drop ceiling .8 Figure 9 Typical in-the-grid ceiling mount 8 Figure 10 Integrated wireless access point/

24、TO11 LIST OF TABLES Table 1 80 m (262 ft) permanent link insertion loss field test values .10 FOREWORD (This foreword is not part of the TSB) TIA standards documents are developed within the Technical Committees of the TIA and the standards coordinating committees of the TIA standards board. Members

25、 of the committees serve voluntarily and without commission. The companies that they represent are not necessar-ily members of the TIA. The standards developed within the TIA represent a consensus of the broad expertise on the subject. This expertise comes from within the TIA as well as those out-si

26、de of the TIA that have an expressed interest. The viewpoint expressed at the time that this standard was approved was from the contributors experience and the state of the art at that time. Users are encouraged to verify that they have the latest revision of the TSB. This TSB has been prepared and

27、approved by the TR-42 Engineering Committee.ii Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TSB-162 1 INTRODUCTION A growing number of enterprises employ equipment at the “ed

28、ge” of the network that relies on physical connections to the cabling infrastructure at the work area, while also having the ability to maintain mobile network access at other locations. A wireless access point is a wireless de-vice which provides connectivity to other wireless devices within its co

29、verage area and also pro-vides interconnection to a wired network. The current suite of TR-42 infrastructure and cabling standards do not specifically cover cabling to wireless access points. Supplementary informa-tion is needed on the number of outlets and outlet placement for wireless access point

30、s. This Telecommunications Systems Bulletin (TSB) uses the topology and architecture of a multi-user telecommunications outlet assembly (MUTOA) as described in ANSI/TIA/EIA-568-B.1. The same concepts and requirements are used to develop the cabling guidelines for wireless access points. This TSB pro

31、vides a design and installation guideline for pre-cabling in a grid approach that al-lows the user flexibility when deploying wireless access points. The pre-cabled grid makes the building ready for a wireless infrastructure to be installed at any time. Additionally, wireless ac-cess point locations

32、 can be “fine tuned” by moving the wireless access point within each cell of the pre-cabled grid as necessary. This TSB is primarily focused on new buildings that are in the planning stage where pre-cabling in a grid approach is recommended. This approach can also be used in existing buildings where

33、 applicable. Site surveys are also advantageous for existing buildings and as the buildings are built and have been occupied and furnished. Alternative cabling methods that may be suitable are also described in Annex A. For code compliance, refer to the authority having jurisdiction (AHJ). 2 PURPOSE

34、 AND SCOPE This TSB provides guidelines on the topology, design, installation, and testing of telecommuni-cations cabling infrastructure, in compliance with ANSI/TIA/EIA-568-B.1 and TIA-569-B, for supporting wireless local area networks (WLAN) in customer-owned premises. This TSB in-cludes the cabli

35、ng between local area network (LAN) equipment and wireless access points in-cluding pathways and spaces to support the cabling and wireless access points. 3 REFERENCES The following standards contain provisions which are referenced in this TSB. At the time of pub-lication, the editions indicated wer

36、e valid. All standards are subject to revision, and parties are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. ANSI and TIA maintain registers of currently valid national standards published by them. ANSI/TIA/EIA-568-B.1, Commercial b

37、uilding telecommunications cabling standard part 1: general requirements. ANSI/TIA/EIA-568-B.2, Commercial building telecommunications cabling standard part 2: balanced twisted-pair cabling components. ANSI/TIA/EIA-568-B.3, Optical fiber cabling components standard. ANSI/TIA/EIA-606-A, Administratio

38、n standard for commercial telecommunications infra-structure. 1 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TSB-162 IEEE 802.3af, Data terminal equipment (DTE) power via med

39、ia dependent interface (MDI). TIA-569-B, Commercial building standard for telecommunications pathways and spaces. 4 DEFINITIONS, ACRONYMS AND ABBREVIATIONS 4.1 Definitions cell: The unit topographical area. coverage area: The area served by a device. grid: A collection of adjacent cells. 4.2 Acronym

40、s and abbreviations AHJ authority having jurisdiction LAN local area network MUTOA multi-user telecommunications outlet assembly RF radio frequency TE telecommunications enclosure TO telecommunications outlet TR telecommunications room WAP wireless access point WLAN wireless local area network 5 TEL

41、ECOMMUNICATIONS OUTLET LOCATIONS 5.1 Cell size 5.1.1 General The wireless coverage area radius is impacted by a number of factors including: Building materials (concrete, drywall, wood, steel, etc.) Building configuration (closed, semi-closed, or open space) Building furnishings (cabinets, partition

42、s, furniture, etc.) WLAN radio frequency (RF) coverage design (e.g. adjacent floors, directional antennas) Occupant density These factors are taken into account by equipment and wireless local area network (WLAN) system vendors when using the site survey approach. These areas are outside the pre-cab

43、led grid approach of this TSB. The purpose of this section is to serve as a design guide, which may be used to appropriately size the cells needed for wireless access. The design of cells, in a grid approach, may also prove useful as a guide in environments such as in hospital rooms, class rooms, an

44、d confer-ence rooms where circumstances may warrant additional and smaller cells. Cell size is a design decision that is made when planning to accommodate user needs. 2 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking

45、 permitted without license from IHS-,-,-TSB-162 To appropriately design coverage, it is recommended that a cell be in the shape of a square. The telecommunications outlet (TO) will be placed at the center of this square, and will have a patch cord extending from it to the wireless access point. The

46、maximum length of this patch cord is the radius of the circle that defines the square cell. See figure 1. NOTES 1 RF planners should be consulted to ensure that all areas receive adequate coverage. 2 Refer to ANSI/TIA/EIA-568-B.1 subclause 6.4.1.5 for optical fiber cabling. TOTOTOTORXH max(max. hori

47、zontal link length)Active equipmentTRMax. 6 m (20 ft)equipment cordWAPL max(max. patchcord length)Figure 1 Cell sizing (wireless access point placed anywhere inside the cell) To allow placement of the wireless access point anywhere within the cell, the maximum length of the patch cord is given by: L

48、max= R = 0.707 X (1) where Lmaxis the maximum patch cord length between the TO and wireless access point; R is the radius of the circle circumscribing the cell; X is the size of the square cell. Once the maximum length of the patch cord between the TO and the wireless access point is known (Lmax), t

49、he next step is to determine the maximum horizontal length from the telecommu-nications room (TR) or telecommunications enclosure (TE) to the TO (Hmax). A maximum of 6 m (20 ft) should account for the cross connects and equipment cords in the TR or TE. It should be noted that the maximum length of the horizon