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1、 CEA Bulletin Recommended Practice for Transmitter Control and Status Indication in Transmitting Portable Electronic Devices (T-PEDs) CEA-CEB18 January 2007 Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for
2、Resale, 03/30/2007 20:39:28 MDTNo reproduction or networking permitted without license from IHS -,-,- NOTICE CEA Standards, Bulletins and other technical publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating in
3、terchangeability 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 and other technical publications shall not in any respect preclude any member or nonmember of CEA
4、 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 preclude their voluntary use by those other than CEA members, whether the bulletin is to be used
5、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 action, CEA does not assume any liability to any patent owner, nor does it assume any obligation
6、 whatever to parties adopting the Standard, Bulletin or other technical publication. This CEA Bulletin is considered to have International Standardization implication, but the International Electrotechnical Commission activity has not progressed to the point where a valid comparison between the CEA
7、Bulletin and the IEC document can be made. This Bulletin does not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Bulletin to establish appropriate safety and health practices and to determine the
8、applicability of regulatory limitations before its use. (Formulated under the cognizance of the CEA R7 Home Networks Committee.) Published by CONSUMER ELECTRONICS ASSOCIATION 2007 Technology it is not the intention here to provide a detailed description of the RF signal or technology subtype1. Infra
9、red transmitters and receivers are not covered by this Recommended Practice. 1 Different 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
10、frequency selection 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 term
11、inology and indicators 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 oper
12、ates in the 5.1 5.8 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
13、bands (806-824 MHz, 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 Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=IHS Employees/11111
14、11001, User=Wing, Bernie Not for Resale, 03/30/2007 20:39:28 MDTNo reproduction or networking permitted without license from IHS -,-,- CEA-CEB18 Recommended Practice for Transmitter Control and Status Indication in T-PEDs This Recommended Practice is intended for use by portable electronic device (P
15、ED) 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 is intended to be used by individ
16、ual 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 products. This Recommended Practice does
17、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 medical information are out of the
18、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 STATUS of T-PED devices. The indiv
19、idual 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 purpose of this FEATURE SET is to pr
20、ovide 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., frequency, modulation), but sim
21、ply 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 positive indicators and will therefo
22、re 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 commercially available products.
23、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 technology subtypes to be actively
24、 transmitted. 2 CEA Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/30/2007 20:39:28 MDTNo reproduction or networking permitted without license from IHS -,-,- CEA-CEB18 Recommended Practice for
25、Transmitter Control and Status Indication in T-PEDs upon user knowledge of indicator display and governing policy, as well as T-PED device manufacturer conformance. More detail on display of indicators is provided in Sections 4 and 5. PROVISIONS regarding TRANSMITTING MODES: 1. “Transmit Enabled”: S
26、atisfaction 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”: Satisfaction of (a) or (b) will indicate all potential transmitters OFF a. “Transmit Disa
27、bled” 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: e.g., b. CMRS / cellular network indicator on mobile phones (conventional signal indica
28、tors): 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 are ON 3 CEA Copyright Consumer Electronics Association Provided by IHS under license wi
29、th CEA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/30/2007 20:39:28 MDTNo reproduction or networking permitted without license from IHS -,-,- CEA-CEB18 Recommended Practice for Transmitter Control and Status Indication in T-PEDs PROVISIONS regarding OPERATIONAL MODES: 4.
30、“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. “Data ONLY”: NO SPECIFIC INDICATOR 6. “Power OFF”: NO SPECIFIC INDICATOR 1.3 Background and Purpose It is recognized that certain electronic
31、ally sensitive environments (e.g., the “sterile cockpit” phase of a commercial airline flight; critical care areas of hospitals) might have policies and applicable regulations to control RF transmissions from T-PED devices. However, as radio frequency wireless technologies permeate our society, grea
32、ter numbers of the general public are becoming dependent upon wireless communications and computing, and T-PED devices are increasingly operated in electronically sensitive or otherwise restricted environments. In response to this growing situation, many stakeholders have restructured policies to su
33、pport 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 practice for the deployment, use, and management of mobile phones and other T-PEDs for wireless communication and computing in hospitals. In t
34、he 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 airline industry for restructuring policies in support of managed T-PED use. Many airlines have already achieved certification for on-board W
35、iFi / 802.11.a/b/g systems to support passenger mobile computing. Mobile phone picocell systems are being actively developed with the intent of supporting managed use of on-board passenger mobile phone communication during non-critical phases of flight. As T-PED devices become increasingly multi-fun
36、ctional, they might be enabled to transmit multiple wireless signals simultaneously or independently. Different T-PED operational modes might or might not comply with policy requirements in electronically sensitive environments (depending upon which transmitters are active). For example, many mobile
37、 phones have internal software to support games, music, and other applications that can be used when the RF link to the CMRS / cellular network1 has been disabled. In the case of laptop computers, modems can be added to support WiFi or CMRS / cellular network1 links for internet and e-mail server ac
38、cess. In many T-PED devices, Bluetooth / 802.15.1 links to a headset or mouse are becoming increasingly popular. 4 CEA Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/30/2007 20:39:28 MDTNo repr
39、oduction or networking permitted without license from IHS -,-,- CEA-CEB18 Recommended Practice for Transmitter Control and Status Indication in T-PEDs In a recent US House of Representatives Subcommittee meeting2 (to examine public safety, national security and social implications stemming from a re
40、cent FCC proposed rule change3) one of the main concerns was the potential adverse social impact of wirelessly 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
41、 create clear and consistent terminology and indicators to facilitate consistent policies to manage T-PED operation in electronically sensitive and/or restricted environments. The prior Recommended Practice (October 2004) specified three operating modes and their acceptable indication: Transmit Enab
42、led: Power on - all transmitters on indicator(s) or no indicator(s) Transmit Disabled: Power on - all transmitters 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.
43、 These multiple RF signals might operate independently of each other, so that the complex status of transmission cannot easily be determined using a single indicator. The current Recommended Practice specifies three additional transmit and operating modes, and their acceptable indication: Specific T
44、ransmitters Enabled: Power on indicated transmitters ON indicator(s) Sleep: Power on transmitter status as above 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
45、 they become wirelessly enabled as a means of cable replacement, remote control / monitoring, and access to 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 playe
46、rs (e.g., wWAN MP3 downloads) Wireless headsets Wireless human interface devices (e.g., mouse, keyboard, keypad, graphic tablet) 2 Subcommittee on Aviation Cell Phones On Aircraft: Nuisance Or Necessity? (July 14, 2005) 3 FCC Notice of Proposed Rulemaking (December 15, 2004) Docket No. 04-435; Amend
47、ment of the Commissions Rules to Facilitate the Use of Cellular Telephones and other IWreless Devices Aboard Airborne Aircraft 5 CEA Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/30/2007 20:39:28 MDTNo reproduction or networking permitted without license from IHS -,-,- CEA-CEB18 Recommended Practice for Transmitter Control and Status Indication in T-PEDs Game players Medical devices and physiologic sensors4 1.4 Revision History This Recommended Practice (CEA-CEB18) was adapted f