harq

LTE Frame Structure and Resource Block Architecture

LTE Frame Structure The figure below shows the LTE frame structure under Time division mode (TDD) Type 2 and Frequency Division mode (FDD) Type 1. Main differences in LTE Frame...
Article Topics :

resource block, reference signal in lte resource block, frequency, block architecture, cyclic prefix, division mode, physical resource, frameactive, enodeb, google, harq, hlr, interleaving, prb lte, resource block, rf optimization, tdd frmae type2

BENEFITS OF LTE/EPC

Fully packet-oriented mobile broadband network providing: - Peak data rates of 100 Mbps (DL) and 50 Mbps (UL) - Very low latency - Seamless and lossless handover - Sophisticated QoS...
Article Topics :

3gpp interworking, 3gpp2, benefit epc, cdma, cell, epc, harq, lte, mimo, ofdm, telecom, wlan

LTE Downlink & Uplink Physical Channel

LTE Downlink Physical Channel Physical Downlink Shared Channel ( PDSCH) This channel is used for unicastand paging functions. Carries the DL-SCH and PCH. QPSK,16-QAM,and 64-QAM Modulation. Physical Downlink Control Channel...
Article Topics :

CHANNEL, downlink, harq, lte, PBCH, pch, physical channel, qpch, sc fdma, SCH, telecom, uplink

Synchronization of signals in LTE

504 different physical-layer cell ids are composed of 168 different physical-layer cell id groups each of 3 physical layer ids within the group There are - primary synchronization signal –...
Article Topics :

cell, harq, lte, telecom, UL and DL control, UL-SCH

H-ARQ Mechanism in DL

1. The Transport block is transmitted to the UE on the PDSCH. 2. The UE receives it but it is erroneous. The TB is stored in a buffer. 3. The...
Article Topics :

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

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

What is Correlation in CDMA ?

Correlation Is a Measure of How Well a Given Signal Matches a Desired Code, The Desired Code is Compared to the Given Signal at Various Test times. Correlation is key...
Article Topics :

What is Correlation in CDMA, correlation, desired code, given signal, digital, direct sequence CDMA systems, received signalcorrelation, epc, frequency, harq, lte ue, radio, rho, usa, vlr

Function of Control plane protocol stacks in LTE

The control plane includes the application protocol. It also includes the signaling bearers for transporting the application protocol messages. The application protocol is used for setting up bearers in the...
Article Topics :

Function of Control plane protocol stacks in LTE, sublayer, application protocol, physical layer, application protocol, nas, access stratum, measurement reporting, pdcp sublayer, lte radio, link control, enodeb, access controldownlink, frequency, harq, hlr, ofdma, radio, resource block, rho, system

What is AMC & its Algorithm in LTE

The effective Eb/No and hence the spectral efficiency depend on BLER. However there are QoS requirements which also have to be considered. Taking both into account leads to a target...
Article Topics :

What is AMC & its Algorithm in LTE,radio conditions, radio, channel, link lte, lte resource, advance tech lte, 4g lteamc lte, bler, cell, cqi, enodeb, harq, lte, lte ue, power control, sinr, telecom

UL and DL cell based scheduler

The scheduling is performed on cell basis. The two main functions are to decide which UE(s) shall be scheduled, the number of resources and the MCS to beĀ  applied. Furthermore...
Article Topics :

UL and DL cell based scheduler, domain scheduling, frequency, resource, lte, lte basiccell, frequency domain, harq, lte ue, telecom, time domain, uplink

Hybrid ARQ (HARQ) in LTE

Hybrid ARQ (HARQ) leads to higher efficiency in transmission and error correction. There is one HARQ entity per UE with 8 stop-and-wait processes for each HARQ entity. Both incremental redundancy...
Article Topics :

Hybrid ARQ (HARQ) in LTE, transport block, transport channel, ue, synchronous, simultaneouslydemodulation, harq, lte, lte ue, physical channel, synchronous asynchronous harq, telecom, ul harq

Transport Channel Types of LTE

Transport channels are used as the basic transmission service offered by layer 1 to MAC. MAC will use transport channels to multiplex and demultiplex logical channels onto and from them....
Article Topics :

Transport Channel Types of LTE, modulation scheme, channel, transport, modulation, qpsk, multicastBCCH, BCH Channel, cell, harq, lte, mtch, rach, telecom, transport block size lte, transport channel, UL-SCH Channel, uplink

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