uplink

Different Categories of UE in LTE

Functionality: eNB obtains the UE radio capabilities via: • The S1AP initial setup request message • The X2AP in case of handover • The RRC in any other cases eNB...
Article Topics :

enb, handover, lte, mimo, mme, radio, rohc, rrc, telecom, ue, ue category lte, ul, uplink

Why LTE Require in Telecom ?

Higher data rates: Obviously this is a general requirement requested from any new system. Quality of service, Lower delay: To enable true convergence between real-time and non-real-time services quality of...
Article Topics :

lte technology wiki, lte technology, lte tutorial, lte wiki, lte faster than 3g, why lte requirecell, epc, lte, LTE/EPC, mbsfn awareness, telecom, uplink

What is 3G? or WCDMA?

3G is new upgraded cdma technology, in simple word its Wide band Code Devision Multiple Access Technology (WCDMA). This is first technology in which video call possible means voice and...
Article Topics :

wcdma, uplink, downlink, pn, 3g, wcdma basiccdma, cell, gsm, power control, rf wcdma, telecom, uplink, WCDMA / 3G

Basic Function of Uplink & Downlink Transport Channel in LTE

Basic Function of Uplink & Downlink Transport Channel in LTE Downlink Transport Channel Broadcast Channel (BCH) A fixed TF Used for transmission of parts of BCCH, so called MIB Paging...
Article Topics :

BCCH, drx, lte, lte downlink channel mapping, pch, telecom, transport, transport channel, uplink

Inter-cell interference coordination (ICIC) in LTE

Inter-cell interference coordination (ICIC) in LTE To aid downlink ICIC Relative narrowband transmission-power indicator A cell can provide this information to neighboring cells, indicating the part of the bandwidth where...
Article Topics :

cell, icic, interference, lte, relative narrowband transmit power, resource block, telecom, uplink, what is dl icic in lte?

How MAC Layer work’s in Wimax?

The MAC layer is oriented to the connections. Each connection corresponds to a service flow. The service flow defines the QoS parameters of PDU transmitted over the connection. The design...
Article Topics :

mac, mac layer, qos, telecom, uplink, Wimax

How Sub-Carrier Allocation in Wimax?

Sub-Carrier Allocation Mode 1 DL PUSC – Downlink partial Usage Sub-Channels The downlink PUSC replacement zone is unique, that must exist in the frame structure specified by the protocols. DL...
Article Topics :

carrier, CHANNEL, downlink, pusc, sub carrier, telecom, uplink, Wimax, wimax amc allocation

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

WCDMA Channelization Code

OVSF Code (Orthogonal Variable Spreading Factor) is used as channelization code Orthogonal codes are easily generated by starting with a seed of 1, repeating the 1 horizontally and vertically, and...
Article Topics :

block, cdma, channelization, channelization code, how create channelization codes, orthogonal, ovsf code, telecom, uplink, wcdma channelization code

How Common Control Channel (CCCH) works in GSM ?

RACH(Random Access Channel) Uplink only. Used by the MS when making its first access to the Network. The reason for access could be initiation of a call or a page...
Article Topics :

access, AGCH, ccch, CHANNEL, common channel, downlink, gsm, lte, ms, network, rach, random, uplink, what is common control channel

LTE Downlink Logical Channel

Paging Control Channel(PCCH) A downlink channel that transfers paging information and system information change notifications. This channel isused for paging when the network does not know the location cell of...
Article Topics :

BCCH, ccch, cell, dcch, downlink, enodeb, logical channel, lte, lte downlink logical channels, mcch, power control, telecom, uplink

List of Uplink and Downlink Physical Channel of WCDMA

Downlink Physical Channel of WCDMA Downlink Dedicated Physical Channel: Downlink DPCH Downlink Common Physical Channel: Common Control Physical Channel (CCPCH) Synchronization Channel ( SCH) Paging Indicator Channel (PICH) Acquisition Indicator...
Article Topics :

ccpch, cdma, cpich, downlink, physical lte, pusc w/ all sc, scch, SCH, telecom, uplink

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