What is downlink and uplink in LTE?
The actual implementation of the technology will be different between the downlink (i.e. from base station to mobile) and the uplink (i.e. mobile to the base station) as a result of the different requirements between the two directions and the equipment at either end.
What is downlink and uplink?
In satellite telecommunication, a downlink is the link from a satellite down to one or more ground stations or receivers, and an uplink is the link from a ground station up to a satellite. Some companies sell uplink and downlink services to television stations, corporations, and to other telecommunication carriers.
What is uplink interference in LTE?
LTE uplink interference happens when there’s too much overlap in the DL (downlink) coverage. In FDD LTE deployment the uplink is a shared frequency resource utilized by each base station and the UE. The repercussions of this interference include a decrease in total data throughput for the cell.
Why is uplink higher than downlink?
In satellite communication, the uplink frequency is higher than the downlink frequency because the attenuation level increase with an increase in frequency. The power at the ground station (Base Station) is more than compared to the power available at the satellite.
What is Pdsch?
The Physical Downlink Shared Channel (PDSCH) is the supreme data-carriage downlink channel in Long Term Evolution (LTE). The PDSCH has Downlink Control Information (DCI) code words of varying length based on the LTE specifications such as DCI format and bandwidth.
What does uplinking mean?
1 : a communications channel for transmissions to a spacecraft or satellite also : the transmissions themselves. 2 : a facility on earth for transmitting to a spacecraft or satellite.
What does Downlinking mean?
: to transmit (data) from a spacecraft or satellite to a receiver on earth.
What is network uplink?
An uplink in computer networking refers to a wired or wireless connection from a local area network (LAN) to a wide area network (WAN). An uplink port on a home router is a special kind of port that’s used to connect to a broadband modem (which is a LAN), and ultimately to the internet (which is a WAN).
What is RSSI in LTE?
RSSI (Received Signal Strength Indicator) is a parameter which provides information about total received wide-band power (measure in all symbols) including all interference and thermal noise. RSSI is not reported to eNodeB by UE. It can simply be computed from RSRQ and RSRP that are, instead, reported by UE.
How can I increase my UL throughput in LTE?
The easiest way is to give a higher priority to L1800 and that will shift most of the UEs in L1800 coverage away from L800. This will ensure better CQI for users and thus a better throughput. Another way would be to keep them on same priority and provide a frequency offset to move the users to L1800.
How does uplink and downlink interference prevent?
Larger guard period normally required if distances are increased to accommodate larger propagation delays. Note that a guard band in frequency domain is required to suppress interference to adjacent bands. Frequency separation is required to provide sufficient isolation between uplink and downlink.
Why uplink is lower than downlink?
It’s because lower frequencies get reflected by atmospheric bands and cannot penetrate to get through to the satellite. Therefore, mobile-to-base station (uplink) frequencies are lower than base station-to-mobile(downlink) frequencies.
