The Joint Range Extension Applications Protocol (JREAP) enables tactical data messages to be transmitted over long-distance

networks Network, networking and networked may refer to: Science and technology * Network theory, the study of graphs as a representation of relations between discrete objects * Network science, an academic field that studies complex networks Mathematics ...

, e.g.

satellite A satellite or an artificial satellite is an object, typically a spacecraft, placed into orbit around a celestial body. They have a variety of uses, including communication relay, weather forecasting, navigation ( GPS), broadcasting, scient ...

links, thereby extending the range of Tactical Data Links (TDLs). JREAP is documented in U.S. Military Standard (MIL-STD) 3011 and NATO Standardization Agreement (STANAG) 5518, "Interoperability Standard for the Joint Range Extension Applications Protocol (JREAP)."

Purpose

JREAP was developed due to the need to communicate

data Data ( , ) are a collection of discrete or continuous values that convey information, describing the quantity, quality, fact, statistics, other basic units of meaning, or simply sequences of symbols that may be further interpreted for ...

over long distances without degradation to the message format or content. JREAP takes the message from the format it was originally formatted in and changes the protocol so that the message can be transmitted over Beyond Line-of Sight media. JREAP is the protocol and message structure for the transmission and reception of pre-formatted messages over communications media other than those for which these messages were designed. JREAP provides a foundation for Joint Range Extension (JRE) of Link 16 and other tactical data links to overcome the line-of-sight limitations of

radio Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connec ...

terminals such as the Joint Tactical Information Distribution System (JTIDS) and

Multifunctional Information Distribution System Multifunctional Information Distribution System (MIDS) is the NATO name for the communication component of Link 16, Link-16 developed by Xetron. MIDS is an advanced command, control, communications, computing and intelligence (C4I) system incorpo ...

(MIDS), and extends coverage of these data links through the use of long-haul media.

Versions

;JREAP A :JREAP A uses an Announced Token Passing protocol for

half-duplex A duplex communication system is a point-to-point system composed of two or more connected parties or devices that can communicate with one another in both directions. Duplex systems are employed in many communications networks, either to allow ...

communications. This protocol may be used when several terminals share the same JRE media and take turns transmitting or in a broadcast situation when one transmits and the rest receive. It is targeted to data rates down to 2400 bits per second on a serial data interface with a TSEC/ KG-84A/ KIV-7 or a compatible encryption device used for data security. It is designed for use with media such as: 25-kHz UHF

Time-Division Multiple Access Time-division multiple access (TDMA) is a channel access method for shared-medium networks. It allows several users to share the same frequency channel by dividing the signal into different time slots. The users transmit in rapid succession, ...

TDMA / Demand Assigned Multiple Access (DAMA) SATCOM, EHF Low Data Rate (LDR) Forced Mode Network Operations and 5 and 25 kHz UHF non-DAMA SATCOM. ;JREAP B :JREAP B is a synchronous or

asynchronous Asynchrony is any dynamic far from synchronization. If and as parts of an asynchronous system become more synchronized, those parts or even the whole system can be said to be in sync. Asynchrony or asynchronous may refer to: Electronics and com ...

point-to-point mode of the JREAP. This mode is similar in design to the Half-Duplex Announced Token Passing protocol used by JREAP A. This mode can be used with SHF and EHF LDR point-to-point mode synchronous connections, STU-III operations via phone lines and other point-to-point media connections. This JREAP application presumes full-duplex data-transparent communication media. ;JREAP C :JREAP C makes use of the

Internet Protocol The Internet Protocol (IP) is the network layer communications protocol in the Internet protocol suite for relaying datagrams across network boundaries. Its routing function enables internetworking, and essentially establishes the Internet. IP ...

(IP) in conjunction with either the

User Datagram Protocol In computer networking, the User Datagram Protocol (UDP) is one of the core communication protocols of the Internet protocol suite used to send messages (transported as datagrams in Network packet, packets) to other hosts on an Internet Protoco ...

(UDP) or

Transmission Control Protocol The Transmission Control Protocol (TCP) is one of the main communications protocol, protocols of the Internet protocol suite. It originated in the initial network implementation in which it complemented the Internet Protocol (IP). Therefore, th ...

(TCP). The IP suite is a standard set of protocols that is deployed worldwide in commercial as well as military networks. By using JREAP encapsulation over IP, JRE can be performed over IP-based networks that meet operational requirements for security, speed of service and so on.

References

{{Reflist Military communications Application layer protocols

Purpose

Versions

See also

References