LTE

what is Radio Retransmission in LTE?

The radio retransmission mechanism is called Hybrid Automatic Request (H-ARQ). H-ARQ allows to retransmit fastly erroneous blocks between the eNodeB and the UE. It avoids long retransmission between 2 TCP...
Article Topics :

arq, diversity, enodeb, harq, lte, radio, receive, telecom, transmitt

How DL Channel works in LTE?

The PDCCH, Physical Downlink Control Channel, allocates the DL and UL resources. There is one PDCCH per sub-frame.   It helps the UE retrieve the transport blocks from the PDSCH:...
Article Topics :

categories, cell, data lte, downlink, lte, rnti, telecom, transmission in lte, ue, ue in lte

LTE : Data Transmission in DL

The data in DL are sent on the PDSCH  A minimum of 2 RBs are allocated by the eNodeBs.  A RB is 12 sub-carriers on a slot (7 symbols).  The...
Article Topics :

categories, data lte, downlink, enodeb, lte, PBCH, resource block, telecom, transmission in lte, ue, ue in lte

UE categories in LTE

These UE categories are often referred to as UE classes. The low end UE does not support MIMO but the high end UE will support 4×4 MIMO Whatever category a...
Article Topics :

categories, data lte, downlink, gsm, lte, telecom, transmission in lte, ue, ue in lte

Traffic Operation Overview in LTE

DL Data Transmission in LTE UL Data Transmission in LTE DL and UL schedulers are running in the eNodeB.  From the following inputs, the eNodeB schedules the data on the...
Article Topics :

bearer, enodeb, eps, lte, lte radio, margin in lte, qos, telecom, traffic, traffic in lte

QoS Parameters of LTE

The QoS Class Identifier (QCI) is a scalar that is used as a reference to access node-specific parameters that control bearer level packet forwarding treatment (e.g. scheduling weights, admission thresholds,...
Article Topics :

apn, bearer, enodeb, eps, lte, lte radio, margin in lte, pn, qos, telecom, traffic, traffic in lte

DL & UL Physical Channel in LTE

How Physical channel of LTE works in UL & DL?A distinction has to made between:  The Physical channel The Physical signal The DL physical channels are: Physical DL Shared Channel...
Article Topics :

DL & UL Physical Channel in LTE, physical channels, shared channel, channel, control channelCHANNEL, control, dl, lte, lte downlink, lte physical channels, lte random access procedure, mac, PBCH, protocol, rlc, service, telecom, transport, ul, uplink

From the Transport to the Physical Channel in LTE

Transport channels are then mapped on the physical channels which are sent over the air interface A CRC is calculated and appended to each TB. It allows the receiver to...
Article Topics :

CHANNEL, control, dl, enodeb, lte, lte downlink, mac, protocol, resource block, rlc, service, telecom, transport, ul

How Transport Channel Work in LTE?

A transport channel defines how and with what characteristics the information is transmitted. Inherited from the WCDMA, data on the transport channel is organized into “Transport Blocks”, TBs. A Transport...
Article Topics :

How Transport Channel Work in LTE?, channel, characterized, transport channels, broadcast, shared channel, link adaptationcdma, cell, CHANNEL, contention free random access, control, dl, lte, lte dl power control, lte downlink, mac, protocol, rlc, service, telecom, transport, ul, uplink

How Many Logical Channel in LTE ?

The following control logical channels have been defined by the 3GPP: BCCH, Broadcast Control Channel, used for the transmission of system control information. A UE needs to decode it before...
Article Topics :

BCCH, cdma, cell, CHANNEL, control, dl, gsm, how many ype of logical channel in lte, lte, lte downlink, mac, protocol, rlc, service, telecom, transport, ul, uplink

How Channel Architecture in LTE?

A Logical Channel is defined by the type of information it carries. Logical channels are classified into control and traffic channels. Answer to the question: what is it being transported?...
Article Topics :

How Channel Architecture in LTE?, physical, channel, information, transported, logicalCHANNEL, control, dl, lte, lte downlink, mac, protocol, rlc, service, telecom, transport, ul

How MAC Protocol Work In LTE?

The MAC protocol provides the following services: Logical Channel to Transport channel mapping Scheduling: There is no dedicated channel allocated to a UE. Time and frequency resources are dynamically shared...
Article Topics :

How MAC Protocol Work In LTE?, channel, scheduler, shared, ue, resources, enodebCHANNEL, control, dl, enodeb, lte, lte downlink, mac, protocol, resource block, rlc, service, telecom, transport, ul, uplink

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