Table of Contents
- 1 What is air interface in wireless communication?
- 2 Which interface is called as air interface?
- 3 What is the 2G air interface?
- 4 What is the air interface in 5G?
- 5 What is the interface between a mobile station and a BTS?
- 6 What is LTE and NR?
- 7 What is the air interface in a cell phone?
- 8 How is a wireless network similar to a wired network?
What is air interface in wireless communication?
In cellular telephone communications, the air interface is the radio-frequency portion of the circuit between the cellular phone set or wireless modem (usually portable or mobile) and the active base station. An antenna focuses the radio waves in a certain direction. Usually, this is called the main direction.
Which interface is called as air interface?
The air interface is the wireless counterpart of the physical layer 1 in the OSI model (see OSI model). Also called a “radio interface,” the air interface defines the frequency, channel bandwidth and modulation scheme.
What is common air interface?
Definition. The Common Air Interface (CAI) is a standard that allows a mobile unit, such as a cellular telephone, to communicate with a base station.
What is LTE air interface?
The LTE Air Interface course offers a complete understanding of the radio interface in Long Term Evolution (LTE) technology. The course focuses on the physical channels structure and their processing in both FDD and TDD mode of LTE.
What is the 2G air interface?
The air interface comprises the base stations (cell towers) and controlling equipment. The 2G base station is a Basic Transceiver Station (BTS) controlled by the Base Station Controller (BSC). The 3G base station is a Node B controlled by the Radio Network Controller (RNC).
What is the air interface in 5G?
5G NR is a new air interface being developed for 5G. An air interface is the radio frequency portion of the circuit between the mobile device and the active base station. The active base station can change as the user is on the move, with each changeover known as a handoff.
What is the air interface in GSM?
The Um interface is the air interface for the GSM mobile telephone standard. It is the interface between the mobile station (MS) and the Base transceiver station (BTS). It is called Um because it is the mobile analog to the U interface of ISDN.
Which of these air interfaces does LTE uses?
LTE uses OFDM in the form of OFDMA in the downlink and SCFDMA in the uplink combined with MIMO offering high data rate, high capacity and immunity against multipath channels.
What is the interface between a mobile station and a BTS?
Um interface (air interface) is defined as the communication interface between a mobile station and a Base Transceiver Station (BTS) and used for the interconnection between a mobile station and the fixed parts of a CDMA system. The physical link is implemented by mean of a radio link.
What is LTE and NR?
LTE: Just introduced support for licensed spectra at 3.5 GHz and unlicensed spectra at 5 GHz. NR: It’s first release supports licensed-spectrum operation from below 1 GHz up to 52.6 GHz and planning is ongoing for extension to unlicensed spectra.
What is XN interface?
The Xn User plane (Xn-U) interface is defined between two NG-RAN nodes. The transport network layer is built on IP transport and GTP-U is used on top of UDP/IP to carry the user plane PDUs. The Xn control plane interface (Xn-C) is defined between two NG-RAN nodes.
Which technology is introduced in air interface of LTE?
With the introduction of LTE came the development of a new radio technology based on OFDMA / SC-FDMA.
What is the air interface in a cell phone?
Some advanced forms of transmission multiplexing combine frequency- and time-division approaches like OFDM or CDMA. In cellular telephone communications, the air interface is the radio-frequency portion of the circuit between the cellular phone set or wireless modem (usually portable or mobile) and the active base station.
How is a wireless network similar to a wired network?
Wireless networks utilize components similar to wired networks; however, wireless networks must convert information signals into a form suitable for transmission through the air medium.
What’s the difference between a WLAN and WiFi?
A WLAN is a wireless computer network that links two or more devices using wireless communication to form a LAN within a limited area such as a home, school, campus, or office building. A WLAN is a network system wherein Wi-Fi is one of the most common technologies in this system. Therefore, WLAN includes Wi-Fi.
What are the parameters of the air interface?
The CEPT have made available two frequency bands to be used throughout Europe by the GSM system, namely; Table 47.3. GSM air interface parameters 1. 890MHz to 915MHz for the mobile to base station (uplink) direction. 2. 935MHz to 960MHz for the base station to mobile (downlink) direction.