LTE and LTE A – Everything you need to know!
What is LTE?
I think most of us know what is LTE and the majority Indian’s are using LTE speed over a year through JIo and other Carriers so i think iam not indeed to explain a lot about LTE connectivity, so some short explainations about LTE are as follows!
LTE stands for “Long Term Evolution.” It’s a type of wireless technology that has taken hold throughout global standard.
LTE (Long Term Evolution) or the E-UTRAN (Evolved Universal Terrestrial Access Network), introduced in 3GPP R8, is the access part of the Evolved Packet System (EPS). The main requirements for the new access network are high spectral efficiency, high peak data rates, short round trip time as well as flexibility in frequency and bandwidth.
What is this LTE-Advanced?
LTE-Advanced (LTE-A) is an emerging and, as the name suggests, a more advanced set of standards and technologies that will be able to deliver bigger and speedier wireless-data payloads.
The most important thing to know is that LTE-A promises to deliver true 4G speeds, unlike current LTE networks. You can expect the real-world speed of LTE-A to be two to three times faster than today’s LTE. It should also be robust, with fewer dropped connections as you move around.
Having more users on wireless networks means that the infrastructure needs to advance to accommodate them all.
Although the term “4G” is an official yet nonbinding standard set by bodies such as the International Telecommunication Union, it has since been commandeered by wireless-carrier marketing departments.
How is LTE-Advanced different from regular LTE?
Just as many consumers are getting their first taste of speedy 4G LTE connections, carriers around the globe have begun pouring resources into building LTE-Advanced networks, which promise even faster and more reliable mobile access.
Both the LTE and LTE-Advanced are fourth generation wireless technologies designed to use for high speed broadband internet access. The specifications are published by 3rd Generation Partnership Project(3GPP). LTE is specified in 3GPP release 8 and LTE Advanced is specified in 3GPP release 10
LTE uses FDD and TDD duplex modes for the UEs to communicate with the eNodeB. There are various bandwidths supported in LTE. Based on the bandwidth different physical layer configurations are used for the system elements(UEs and eNodeBs) to communicate efficiently.
The LTE uses OFDMA modulation in the downlink(from eNodeB to UEs) and SC-FDMA modulation in the uplink(from UEs to eNodeB). Various physical channels and logical channels are designed to take care of data as well as control informations.
It supports peak data rate of 300MBPS in the downlink and 75MBPS in the uplink(theoretically) technology to increase the peak data rates to about 1GBPS in the downlink and 500MBPS in the uplink.
In order to increase the data rates LTE-Advanced utilizes higher number of antennas and added carrier aggregation feature. The driving force to further develop LTE towards LTE–Advanced – LTE Release10 was to provide higher bitrates in a cost efficient way and, at the same time, completely fulfill the requirements set by ITU for IMT Advanced, also referred to as 4G.
LTE Advanced – Changes which makes It effective!
- Increased peak data rate, DL 3 Gbps, UL 1.5 Gbps.
- Higher spectral efficiency, from a maximum of 16bps/Hz in R8 to 30 bps/Hz in R10
- Increased number of simultaneously active subscribers.
- Improved performance at cell edges, e.g. for DL 2×2 MIMO at least 2.40 bps/Hz/cell.
- The main new functionalities introduced in LTE-Advanced are Carrier Aggregation (CA), enhanced use of multi-antenna techniques and support for Relay Nodes (RN).
However, even the Release 8 of the LTE-Advanced standard only support maximum download speeds of 300Mbit/s, which is below the IMT-Advanced standard. It wasn’t until the Release 10 specification that LTE-A networks were define to provide peak download capabilities of 1Gbit/s download and 500Mbit/s upload.
As such, network hardware is split into categories depending on their capabilities and you won’t see devices or networks automatically jump up to meet these specs. In other words, LTE and WiMax standards are gradually improving to meet the IMT-Advanced specification.
The TL-DR of it is that LTE and LTE-A are both essentially forms of ‘true’ 4G. Meanwhile, some of the networks that are clinging on to the name “4G” are really not fully in compliance with the standard!
LTE Advanced Supported Smartphones in India!
The most important thing is that Xiaomi smartphones starting from Redmi Note 3 to the latest Mi Max 2 supports LTE A through CAT 6 and CAT 7+ Bands.