The Medical Device Radiocommunications Service (MedRadio) is a specification and communication spectrum created for and set aside by the U.S. Federal Communications Commission (FCC) for the communication needs of diagnostic and therapeutic medical implants and body-worn medical devices. Devices operating on MedRadio include cardiac pacemakers, defibrillators, neuromuscular stimulators, and drug delivery systems. [1] [2] As of February 2016 [update] , communications spectrum for these and other similar devices is set aside at various points in the 400 MHz frequency band, as well as the 2360-2400 MHz band, though specifically for medical body area network (MBAN) devices. The specification supersedes and incorporates a previous specification called the Medical Implant Communication Service (MICS). [1]
The specification and nearly identical spectrum have also been created by the European Telecommunications Standards Institute (ETSI), with the specification largely referred to as MICS/MEDS (Medical Data Service) in Europe and other parts of the world. [3] [4]
The FCC created the Medical Implant Communication Service (MICS) in 1999 "in response to a petition for rule making by [Medtronic, Inc.] to permit use of a mobile radio device, implanted in a patient, for transmitting data in support of the diagnostic and/or therapeutic functions associated with an implanted medical device." [5] [6] This set aside the 402–405 MHz band and designated a low maximum transmit power, EIRP=25 microwatt, in order to reduce the risk of interfering with other users of the same band. Ten channels of 300 kHz each were assigned to the bandwidth. MICS provided additional flexibility to medical device developers compared to previously used inductive technologies, which required the external transceiver to touch the skin of the patient. [5] [6] [7] MICS was later adopted by the ETSI in 2002. [8] : 652
In 2006, the FCC reevaluated the spectrum requirements at the prompting of Medtronic, which sought to expand the spectrum "to support advances in medical sensor technology and the expected proliferation of such devices, especially those used for lower-cost medical monitoring and non-emergency reporting applications." [9] A similar process was initiated by the ETSI in Europe in July 2004, with both the FCC and ETSI considering the 401–402 and 405–406 MHz ranges. The ETSI formalized the proposal into a standard called MEDS (with the core MICS bands remaining under that name and the new "wing" bands being referred to as MEDS) in December 2007, [3] while the FCC added the same additional spectrum to MICS and dubbed the expanded plan the Medical Device Radiocommunications Service or MedRadio in May 2009. [1] [10] [11] The FCC expanded MedRadio's spectrum again in November 2011, adding 24 megahertz in the 413-419 MHz, 426-432 MHz, 438-444 MHz, and 451-457 MHz ranges as part of an "effort to recognize and facilitate the significant advances in wireless medical technologies that are revolutionizing treatment for a wide variety of medical conditions." [1] [12] [13]
The FCC allocated additional spectrum (2360-2400 MHz) specifically for MBAN devices in May 2012, effective on October 10, citing "significant public interest benefits associated with the development and deployment" of MBAN devices. [1] [14] Additional modifications to the MBAN rules were released in August 2014, including the "narrowing [of] the definition of health care facilities that may use MBAN devices in the 2360-2390 MHz band" and relaxing MBAN network topology restrictions among others. [15] [16]
In the United States, the FCC states that: [1]
Operational parameters in other parts of the world may vary slightly based on local law. In Canada, for example, devices that fall under the MEDS standard also fall under secondary status, but they are classified nationally as Category I equipment that require a technical acceptance certificate (TAC) or equally recognized certificate before they can be used. [17]
Digital Enhanced Cordless Telecommunications, usually known by the acronym DECT, is a standard used for creating cordless telephone systems and for IoT systems. It originated in Europe, where it is the common standard, replacing earlier cordless phone standards, such as 900 MHz CT1 and CT2. The IoT usage relies on the new DECT-2020 standard.
The ISM radio bands are portions of the radio spectrum reserved internationally for industrial, scientific, and medical (ISM) purposes, excluding applications in telecommunications. Examples of applications for the use of radio frequency (RF) energy in these bands include RF heating, microwave ovens, and medical diathermy machines. The powerful emissions of these devices can create electromagnetic interference and disrupt radio communication using the same frequency, so these devices are limited to certain bands of frequencies. In general, communications equipment operating in ISM bands must tolerate any interference generated by ISM applications, and users have no regulatory protection from ISM device operation in these bands.
Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the decimetre band as the wavelengths range from one meter to one tenth of a meter. Radio waves with frequencies above the UHF band fall into the super-high frequency (SHF) or microwave frequency range. Lower frequency signals fall into the VHF or lower bands. UHF radio waves propagate mainly by line of sight; they are blocked by hills and large buildings although the transmission through building walls is strong enough for indoor reception. They are used for television broadcasting, cell phones, satellite communication including GPS, personal radio services including Wi-Fi and Bluetooth, walkie-talkies, cordless phones, satellite phones, and numerous other applications.
The Family Radio Service (FRS) is an improved walkie-talkie radio system authorized in the United States since 1996. This personal radio service uses channelized frequencies around 462 and 467 MHz in the ultra high frequency (UHF) band. It does not suffer the interference effects found on citizens' band (CB) at 27 MHz, or the 49 MHz band also used by cordless telephones, toys, and baby monitors. FRS uses frequency modulation (FM) instead of amplitude modulation (AM). Since the UHF band has different radio propagation characteristics, short-range use of FRS may be more predictable than the more powerful license-free radios operating in the HF CB band.
IEEE 802.11p is an approved amendment to the IEEE 802.11 standard to add wireless access in vehicular environments (WAVE), a vehicular communication system. It defines enhancements to 802.11 required to support intelligent transportation systems (ITS) applications. This includes data exchange between high-speed vehicles and between the vehicles and the roadside infrastructure, so called vehicle-to-everything (V2X) communication, in the licensed ITS band of 5.9 GHz (5.85–5.925 GHz). IEEE 1609 is a higher layer standard based on the IEEE 802.11p. It is also the basis of a European standard for vehicular communication known as ETSI ITS-G5.
A spectrum auction is a process whereby a government uses an auction system to sell the rights to transmit signals over specific bands of the electromagnetic spectrum and to assign scarce spectrum resources. Depending on the specific auction format used, a spectrum auction can last from a single day to several months from the opening bid to the final winning bid. With a well-designed auction, resources are allocated efficiently to the parties that value them the most, the government securing revenue in the process. Spectrum auctions are a step toward market-based spectrum management and privatization of public airwaves, and are a way for governments to allocate scarce resources.
IEEE 802.11y-2008 is an amendment to the IEEE 802.11-2007 standard that enables data transfer equipment to operate using the 802.11a protocol on a co-primary basis in the 3650 to 3700 MHz band except when near a grandfathered satellite earth station. IEEE 802.11y is only being allowed as a licensed band. It was approved for publication by the IEEE on September 26, 2008.
Advanced Wireless Services (AWS) is a wireless telecommunications spectrum band used for mobile voice and data services, video, and messaging. AWS is used in the United States, Argentina, Canada, Colombia, Mexico, Chile, Paraguay, Peru, Ecuador, Trinidad and Tobago, Uruguay and Venezuela. It replaces some of the spectrum formerly allocated to Multipoint Multichannel Distribution Service (MMDS), sometimes referred to as Wireless Cable, that existed from 2150 to 2162 MHz.
The United States 700 MHz FCC wireless spectrum auction, officially known as Auction 73, was started by the Federal Communications Commission (FCC) on January 24, 2008 for the rights to operate the 700 MHz radio frequency band in the United States. The details of process were the subject of debate among several telecommunications companies, including Verizon Wireless, AT&T Mobility, as well as the Internet company Google. Much of the debate swirled around the open access requirements set down by the Second Report and Order released by the FCC determining the process and rules for the auction. All bidding was required by law to commence by January 28.
Land mobile service is – in line to ITU Radio Regulations – a mobile service between base stations and land mobile stations, or between land mobile stations.
The 13 centimeter, 2.3 GHz or 2.4 GHz band is a portion of the UHF (microwave) radio spectrum internationally allocated to amateur radio and amateur satellite use on a secondary basis. The amateur radio band is between 2300 MHz and 2450 MHz, and thereby inside the S-band. The amateur satellite band is between 2400 MHz and 2450 MHz, and its use by satellite operations is on a non-interference basis to other radio users. The license privileges of amateur radio operators include the use of frequencies and a wide variety of modes within these ranges for telecommunication. The allocations are the same in all three ITU Regions.
Wireless Medical Telemetry Service (WMTS) is a wireless service specifically defined in the United States by the Federal Communications Commission (FCC) for transmission of data related to a patient's health (biotelemetry). It was created in 2000 because of interference issues due to establishment of digital television. The bands defined are 608-614 MHz, 1395-1400 MHz and 1427-1432 MHz. Devices using these bands are typically proprietary. Further, the use of these bands has not been internationally agreed to, so many times devices cannot be marketed or used freely in countries other than the United States.
Digital audio radio service (DARS) is any type of digital radio program service. In the United States it is the official FCC term for digital radio services.
A body area network (BAN), also referred to as a wireless body area network (WBAN) or a body sensor network (BSN) or a medical body area network (MBAN), is a wireless network of wearable computing devices. BAN devices may be embedded inside the body as implants or pills, may be surface-mounted on the body in a fixed position, or may be accompanied devices which humans can carry in different positions, such as in clothes pockets, by hand, or in various bags. Devices are becoming smaller, especially in body area networks. These networks include multiple small body sensor units (BSUs) and a single central unit (BCU). Despite this trend, decimeter sized smart devices still play an important role. They act as data hubs or gateways and provide a user interface for viewing and managing BAN applications on the spot. The development of WBAN technology started around 1995 around the idea of using wireless personal area network (WPAN) technologies to implement communications on, near, and around the human body. About six years later, the term "BAN" came to refer to systems where communication is entirely within, on, and in the immediate proximity of a human body. A WBAN system can use WPAN wireless technologies as gateways to reach longer ranges. Through gateway devices, it is possible to connect the wearable devices on the human body to the internet. This way, medical professionals can access patient data online using the internet independent of the patient location.
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The C band is a designation by the Institute of Electrical and Electronics Engineers (IEEE) for a portion of the electromagnetic spectrum in the microwave range of frequencies ranging from 4.0 to 8.0 gigahertz (GHz). However, the U.S. Federal Communications Commission C band proceeding and auction, designated 3.7–4.2 GHz as C band. The C band is used for many satellite communications transmissions, some Wi-Fi devices, some cordless telephones, as well as some radar and weather radar systems.
Citizens Broadband Radio Service (CBRS) is a 150 MHz wide broadcast band of the 3.5 GHz band in the United States. In 2017, the US Federal Communications Commission (FCC) completed a process which began in 2012 to establish rules for commercial use of this band, while reserving parts of the band for the US Federal Government to limit interference with US Navy radar systems and aircraft communications.