Uplink

An uplink (UL or U/L) is the portion of a communications link used for the transmission of signals from an Earth terminal to a satellite or to an airborne platform. In Telecommunications, information transfer is the process of moving messages containing User information from a source to a sink In Telecommunication a data link is the means of connecting one location to another for the purpose of transmitting and receiving digital information In Telecommunications transmission is the process of sending propagating and receiving an analogue or digital information signal over a physical point-to-point or An Earth terminal, in a Satellite link, is one of the non-orbiting communications stations that receives processes and transmits signals between itself and a Satellite This article is about artificial satellites For natural satellites also known as moons see Natural satellite. An uplink is the inverse of a downlink. An uplink or downlink is distinguished from reverse link or forward link (see below).

• Pertaining to data transmission from a data station to the headend. Data transmission is the transfer of Data from point-to-point often represented as an Electro-magnetic Signal over a physical point-to-point or point-to-multipoint Head end may refer to A central control device required by some networks (e
• Pertaining to GSM and cellular networks, the radio uplink is the transmission path from the Mobile Station (Cell Phone) to a Base Station (Cell Site). GSM ( Global System for Mobile communications: originally from Groupe Spécial Mobile) is the most popular standard for Mobile phones in the The mobile station ( MS) comprises all user equipment and software needed for Communication with a Wireless telephone network. A base transceiver station ( BTS) is a piece of equipment that facilitates Wireless communication between user equipment (UE and a network Traffic and signalling flows within the BSS and NSS may also be identified as uplink and downlink. The Base Station Subsystem ( BSS) is the section of a traditional cellular telephone network which is responsible for handling traffic and signaling between a Network Switching Subsystem, or NSS, is the component of a GSM system that carries out switching functions and manages the communications between Mobile phones

Downlink

A downlink (DL) is the link from a satellite to a ground station. A communications satellite (sometimes abbreviated to comsat) is an artificial Satellite stationed in space for the purposes of Telecommunications.

• Pertaining to cellular networks, the radio downlink is the transmission path from a Base Transceiver Station (Cell Site) to the Mobile Station (Cell Phone). A cellular network is a Radio network made up of a number of radio cells (or just cells) each served by a fixed transmitter known as a Cell A base transceiver station ( BTS) is a piece of equipment that facilitates Wireless communication between user equipment (UE and a network The mobile station ( MS) comprises all user equipment and software needed for Communication with a Wireless telephone network. Traffic and signalling flows within the BSS and NSS may also be identified as uplink and downlink. The Base Station Subsystem ( BSS) is the section of a traditional cellular telephone network which is responsible for handling traffic and signaling between a Network Switching Subsystem, or NSS, is the component of a GSM system that carries out switching functions and manages the communications between Mobile phones

Forward link

A forward link is the link from a fixed location (e. g. , a base station) to a mobile user. The term base station can be used in the context of Land surveying, Wireless computer networking, and Wireless communications. If the link includes a communications relay satellite, the forward link will consist of both an uplink (base station to satellite) and a downlink (satellite to mobile user). A communications satellite (sometimes abbreviated to comsat) is an artificial Satellite stationed in space for the purposes of Telecommunications. Uplink An uplink (UL or U/L is the portion of a communications link used for the transmission of signals from an Earth terminal

Reverse link

The reverse link (sometimes called a return link) is the link from a mobile user to a fixed base station.

If the link includes a communications relay satellite, the reverse link will consist of both an uplink (mobile station to satellite) and a downlink (satellite to base station) which together constitute a half hop. A communications satellite (sometimes abbreviated to comsat) is an artificial Satellite stationed in space for the purposes of Telecommunications. Uplink An uplink (UL or U/L is the portion of a communications link used for the transmission of signals from an Earth terminal Uplink An uplink (UL or U/L is the portion of a communications link used for the transmission of signals from an Earth terminal In Telecommunication, the term hop has the following meanings The excursion of a Radio wave from the Earth to the Ionosphere

See also: Backhaul (telecommunications) and Return channel

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