RSRQ

Reference Signal Received Quality or with abbreviated version RSRQ is quality of the received signal. Here the “received signal” is reference signal (RSRP). But, how do we see the RSRQ value as negative in drive-test tools and why do we READ MORE

RSRP

Reference Signal Received Power or with abbreviated version RSRP is linear averaged signal strength of Reference Signal. The Reference Signal is carried by Resource Elements (RE). RSRP is used for cell selection, cell reselection and handover purposes in LTE. It READ MORE

HARQ & ARQ

If the erroneous packets are received by eNodeB or UE in radio interface, what kind of action will be taken? In intelligent technology there should be a mechanism to solve this issue. And there is, which is Hybrid Automatic Repeat READ MORE

TTI Bundling

HARQ is a technique where receiver gets and combines the new transmitted data with previous erroneous data, but not all the time this method is convenient if the UE is in poor radio condition. Transmitter needs to re-transmit the data READ MORE

UE Inactivity Timer

When the eNodeB detects a UE which does not have any traffic to send and receive during a defined period of time, usually referred to an inactivity timer (20s, 10s etc…) which is defined in eNodeB and also is configurable, READ MORE

RAN Sharing

During the network deployment by the operators they face with a lot of difficulties such as high deployment costs, expensive spectrum license fees , site acquisition issues, and etc., but with eNodeB Hardware sharing between different mobile operators they can READ MORE

EPS Bearer

“Bearer” means “Carrier” which takes and carry the information from one point to another point or we can imagine this bearer as a pipe-line. EPS bearer or with long name Evolved Packet System bearer, provides user plane IP connectivity between READ MORE

SINR

“Signal-to-Interference-plus-Noise Ratio” or SINR is a quality measurement type in wireless network. Unlike RSRQ, it is not defined in 3GPP specifications but it is defined by user equipment vendors with some special calculation methods in chipsets. The SINR is not READ MORE

CS FallBack

Most of the mobile operators tries for cost saving due to several reasons. If an operator recently deployed an LTE network, then it should provide voice service over the new built network. But, how? Of course there is an excellent READ MORE