1、 CEA Bulletin Recommended Practice for Transmitter Control and Status Indication in Transmitting Portable Electronic Devices (T-PEDs) CEA-CEB18 R-2012 January 2007 NOTICE Consumer Electronics Association (CEA) Standards, Bulletins and other technical publications are designed to serve the public int
2、erest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards, Bulletins
3、and other technical publications shall not in any respect preclude any member or nonmember of CEA from manufacturing or selling products not conforming to such Standards, Bulletins or other technical publications, nor shall the existence of such Standards, Bulletins and other technical publications
4、preclude their voluntary use by those other than CEA members, whether the standard is to be used either domestically or internationally. Standards, Bulletins and other technical publications are adopted by CEA in accordance with the American National Standards Institute (ANSI) patent policy. By such
5、 action, CEA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard, Bulletin or other technical publication. This document does not purport to address all safety problems associated with its use or all applicable regulatory req
6、uirements. It is the responsibility of the user of this document to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. This document is copyrighted by the Consumer Electronics Association (CEA) and may not be reproduced, in
7、whole or part, without written permission. Federal copyright law prohibits unauthorized reproduction of this document by any means. Organizations may obtain permission to reproduce a limited number of copies by entering into a license agreement. Requests to reproduce text, data, charts, figures or o
8、ther material should be made to CEA. (Formulated under the cognizance of the CEA R7 Home Networks Committee.) Published by CONSUMER ELECTRONICS ASSOCIATION 2012 Technology it is not the intention here to provide a detailed description of the RF signal or technology subtype1. Infrared transmitters an
9、d receivers are not covered by this Recommended Practice. 1Different wireless technology subtypes within a given category (e.g., CMRS / cellular network systems, WiFi, Bluetooth) may have distinct signal characteristics, capacity support, dynamic power level control, and dynamic frequency selection
10、that may directly or indirectly influence their electromagnetic interaction with neighboring sensitive electronic equipment. It is not the purpose of this Recommended Practice to provide a detailed description of wireless technologies. In addition, the complexity of defining terminology and indicato
11、rs to specify each possible technology subtype would defeat the purpose of a simple, clear, and consistent set of terminology and indicators for T-PED transmit status. For instance, it is understood that operation of WiFi may involve different subtypes including 802.11a that operates in the 5.1 5.8
12、GHz band and 802.11b/g that operates in the 2.4 2.5 GHz band. Many laptop computers and WiFi add-on cards are enabled to operate on both frequency bands using 802.11a/b/g. It is also understood that operation of CMRS from T-PED handsets in the USA may include different frequency bands (806-824 MHz,
13、824 849 MHz, 1850 1910 MHz) as well as different signal types (analog, GSM, CDMA, iDEN). Additional “cellular” frequency bands exist in Europe (890 - 915 MHz, 1750 1 CEA CEA-CEB18 Recommended Practice for Transmitter Control and Status Indication in T-PEDsThis Recommended Practice is intended for us
14、e by portable electronic device (PED) manufacturers, related component and software companies, the air transport industry, relevant government regulatory agencies, and other stakeholders that might require information on transmitting status of T-PEDs to facilitate policies. This Recommended Practice
15、 is intended to be used by individual stakeholders in the formation of their policies to manage the use of T-PEDS in commercial aircraft, healthcare, and other sensitive electronic environments. The PROVISIONS of this Recommended Practice are to be implemented by producers of T-PEDs in their product
16、s. This Recommended Practice does NOT address medical data (e.g., alarms, alerts, quality of service requirements) or make any recommendations regarding conditions under which T-PEDs that support wireless medical data streams are to be enabled or disabled. Such decisions regarding the transport of m
17、edical information are out of the scope of this document and are assumed to be in the purview of healthcare professionals. 1.2 Overview This Recommended Practice outlines PROVISIONS that together constitute a FEATURE SET, which include defined TERMINOLOGY and INDICATORS for TRANSMIT and OPERATIONAL
18、STATUS of T-PED devices. The individual PROVISIONS in this FEATURE SET are understood to be considered collectively. Conformance will assume satisfaction of all PROVISIONS in the FEATURE SET, and non-conformance will assume any one or all PROVISIONS in the FEATURE SET have not been satisfied. The pu
19、rpose of this FEATURE SET is to provide both users and persons managing sensitive electronic environments a rapid, clear, and consistent method to manage T-PED transmissions. This FEATURE SET of indicators and terminology is not intended to provide precise information on the transmitted signal (i.e.
20、, frequency, modulation), but simply identify general classes of wireless communication technology that are enabled and/or active. Indication that all transmitters are disabled is specified by a negative indicator (“Transmit Disabled”). Selective enabling of transmitters is designated by various pos
21、itive indicators and will therefore depend 1780, 1900 - 1980 MHz) and other parts of the world. It is understood that a majority of currently available Bluetooth devices are class 3 and operate at milliwatts to of power, while class 1 devices operating at 1 watt may increasingly find their way into
22、commercially available products. Any indication of these broad wireless technology categories will imply that any or all of these technology subtypes may be actively transmitted. Likewise, conformance of any wireless technology category to this Recommended Practice is to account for all associated t
23、echnology subtypes to be actively transmitted. 2 CEA CEA-CEB18 Recommended Practice for Transmitter Control and Status Indication in T-PEDsupon user knowledge of indicator display and governing policy, as well as T-PED device manufacturer conformance. More detail on display of indicators is provided
24、 in Sections 4 and 5. PROVISIONS regarding TRANSMITTING MODES: 1. “Transmit Enabled”: Satisfaction of (a), (b), or (c) will indicate all potential transmitters ON a. “Transmit Enabled” indicator: b. Conventional signal strength indicators: , , c. Power on with no indicator 2. “Transmit Disabled”: Sa
25、tisfaction of (a) or (b) will indicate all potential transmitters OFF a. “Transmit Disabled” indicator: b. Power OFF 3. “Specific Transmitters Enabled”: Satisfaction of (a), (b), or (c) will indicate that only the specific transmitter(s) indicated are ON a. wLAN / wPAN Industry Standard indicators:
26、e.g., b. CMRS / cellular network indicator on mobile phones (conventional signal indicators): c. CMRS / cellular network indicator on laptops and other T-PEDs (proposed indicator): Transmit Disabled indicator indicates all transmitters are OFF Power on with no indicators indicates all transmitters a
27、re ON 3 CEA CEA-CEB18 Recommended Practice for Transmitter Control and Status Indication in T-PEDsPROVISIONS regarding OPERATIONAL MODES: 4. “Sleep”: NO SPECIFIC INDICATOR wakeup T-PED using a simple 1-step process, with transmit status indicators clearly visible upon awakening 5. “Voice + Data” vs.
28、 “Data ONLY”: NO SPECIFIC INDICATOR 6. “Power OFF”: NO SPECIFIC INDICATOR 1.3 Background and Purpose It is recognized that certain electronically sensitive environments (e.g., the “sterile cockpit” phase of a commercial airline flight; critical care areas of hospitals) might have policies and applic
29、able regulations to control RF transmissions from T-PED devices. However, as radio frequency wireless technologies permeate our society, greater numbers of the general public are becoming dependent upon wireless communications and computing, and T-PED devices are increasingly operated in electronica
30、lly sensitive or otherwise restricted environments. In response to this growing situation, many stakeholders have restructured policies to support managed use of T-PEDs. However, these policy adjustments are not always consistent. In the case of healthcare, ISO/TR 21730:2005 outlines a recommended p
31、ractice for the deployment, use, and management of mobile phones and other T-PEDs for wireless communication and computing in hospitals. In the case of aircraft, the RTCA SC-202 DO-294A and comparable EUROCAE WG58 work product include recommendations that might serve as guidelines to the commercial
32、airline industry for restructuring policies in support of managed T-PED use. Many airlines have already achieved certification for on-board WiFi / 802.11.a/b/g systems to support passenger mobile computing. Mobile phone picocell systems are being actively developed with the intent of supporting mana
33、ged use of on-board passenger mobile phone communication during non-critical phases of flight. As T-PED devices become increasingly multi-functional, they might be enabled to transmit multiple wireless signals simultaneously or independently. Different T-PED operational modes might or might not comp
34、ly with policy requirements in electronically sensitive environments (depending upon which transmitters are active). For example, many mobile phones have internal software to support games, music, and other applications that can be used when the RF link to the CMRS / cellular network1has been disabl
35、ed. In the case of laptop computers, modems can be added to support WiFi or CMRS / cellular network1links for internet and e-mail server access. In many T-PED devices, Bluetooth / 802.15.1 links to a headset or mouse are becoming increasingly popular. 4 CEA CEA-CEB18 Recommended Practice for Transmi
36、tter Control and Status Indication in T-PEDsIn a recent US House of Representatives Subcommittee meeting2(to examine public safety, national security and social implications stemming from a recent FCC proposed rule change3) one of the main concerns was the potential adverse social impact of wireless
37、ly supported voice conversations occurring within the confines of a passenger aircraft cabin during flight. As the transmitter status of T-PEDs becomes increasingly complex, there is a need to create clear and consistent terminology and indicators to facilitate consistent policies to manage T-PED op
38、eration in electronically sensitive and/or restricted environments. The prior Recommended Practice (October 2004) specified three operating modes and their acceptable indication: Transmit Enabled: Power on - all transmitters on indicator(s) or no indicator(s) Transmit Disabled: Power on - all transm
39、itters off indicator Power off - all transmitters off no indicator The current Recommended Practice broadens the scope to encompass T-PEDs that are capable of transmitting multiple RF signals. These multiple RF signals might operate independently of each other, so that the complex status of transmis
40、sion cannot easily be determined using a single indicator. The current Recommended Practice specifies three additional transmit and operating modes, and their acceptable indication: Specific Transmitters Enabled: Power on indicated transmitters ON indicator(s) Sleep: Power on transmitter status as a
41、bove indicator, 1-step wake-up Data only: Power on - transmitter status as above no indicator In addition, the current Recommended Practice broadens the scope to encompass additional T-PEDs as they become wirelessly enabled as a means of cable replacement, remote control / monitoring, and access to
42、communication and data networks. The list of potential T-PEDs currently recognized by the present Recommended Practice might include: Mobile phones 2-way pagers PDAs Laptop computers MP3 players (e.g., wWAN MP3 downloads) Wireless headsets Wireless human interface devices (e.g., mouse, keyboard, key
43、pad, graphic tablet) 2Subcommittee on Aviation Cell Phones On Aircraft: Nuisance Or Necessity? (July 14, 2005) 3FCC Notice of Proposed Rulemaking (December 15, 2004) Docket No. 04-435; Amendment of the Commissions Rules to Facilitate the Use of Cellular Telephones and other IWreless Devices Aboard A
44、irborne Aircraft 5 CEA CEA-CEB18 Recommended Practice for Transmitter Control and Status Indication in T-PEDs Game players Medical devices and physiologic sensors41.4 Revision History This Recommended Practice (CEA-CEB18) was adapted from an earlier document Recommended Practice - Status Indicator f
45、or and Control of Transmitters in Portable Electronic Devices (PEDs) published by CEA in 2004, which addressed only the ability to turn off all transmitters. The current CEA-CEB18 extends the previous document to consider disabling of one or more T-PED transmitters, each with the capability of trans
46、mitting multiple different RF signals, which might be present in a single device, and also addresses “wLAN / wPAN Enabled” transmitter status. It is anticipated that this Recommended Practice will be amended as products and wireless technologies evolve. Such amendments might address changes in: T-PE
47、D device types RF wireless technologies Operational modes Industry practices / policies Regulatory compliance requirements Industry accepted terminology 4As outlined in the Scope section, although the current Recommended Practice recognizes medical devices and physiologic sensors as increasingly wir
48、elessly enabled, it will not address medical data (e.g., alarms, alerts, quality of service requirements) or make any recommendations regarding conditions under which to enable or disable T-PEDs that support wireless medical data streams. Such decisions regarding the transport of medical information are out of the scope of this document and should be made by healthcare professionals. 6 CEA CEA-CEB18 Recommended Practice for Transmitter Control and Status Indication in T-PEDs2 References 2.1 Informa
copyright@ 2008-2019 麦多课文库（www.mydoc123.com）网站版权所有
备案/许可证编号：苏ICP备17064731号-1