What is E DCH?

What is E DCH?

Enhanced dedicated channel (E-DCH) is a particular resource used for the facilitation of High-Speed Uplink Packet Access (HSUPA), a protocol to create high uplink speeds for data packets in 3G systems. In HSUPA, these types of additional channels provide additional signaling capacity.

How many channels in UMTS?

As shown in the figure, there are three types of UMTS channels viz. logical channels(RLC layer), transport channels(MAC layer) and physical channels(PHY layer). As they tranverse between layers they map to other layer frames.

What is Rach Telecom?

A random-access channel (RACH) is a shared channel used by wireless terminals to access the mobile network (TDMA/FDMA, and CDMA based network) for call set-up and bursty data transmission. Whenever mobile wants to make an MO (Mobile Originating) call it schedules the RACH.

What is Cpich Wcdma?

CPICH stands for Common Pilot Channel in UMTS and some other CDMA communications systems. In WCDMA FDD cellular systems, CPICH is a downlink channel broadcast by Node Bs with constant power and of a known bit sequence. Its power is usually between 5% and 15% of the total Node B transmit power.

What is the purpose of broadcast control channel?

The Broadcast Control CHannel (BCCH) is a logical broadcast channel used by the basestation in a GSM network to send information about the identity of the network. This information is used by a mobile station to get access to the network.

What is Rach LTE?

Two types of RACH process : Contention-based and Contention-free. When a UE transmit a PRACH Preamble, it transmits with a specific pattern and this specific pattern is called a “Signature”. In each LTE cell, total 64 preamble signatures are available and UE select randomly one of these signatures.

What is Rscp and EcNo?

EcNo: energy per chip over the noise, a measure of the quality of the signal. RSCP: Energy after processing ie with gain from coding etc. RSSI: A dB measure of the signal arriving at the antenna before gain from processing.

What is a pilot channel?

A pilot channel cuts a rectangular notch into the bottom of the cross section. Generally this notch is not very wide (often 1 ft is used), but it provides depth to the cross section at low flows (typically make it 5 to 10 feet deep).

What is broadcast channel in SMS?

Cell Broadcast is a type of text message similar to an SMS message that can be sent to all cell phone users in a given area. The typical use for these kinds of messages is to send emergency alerts to mobile users. Cell Broadcasts are part of the GSM standard.

What is broadcast channel on Android?

Broadcast channel is a non-blocking primitive for communication between the sender and multiple receivers that subscribe for the elements using openSubscription function and unsubscribe using ReceiveChannel.

Why do we need Rach in LTE?

Random Access Channel (RACH) Procedure of LTE -Contention Based. Machine-to-machine communication (M2M) is a technology to provide interaction among network devices without human intervention. Due to infrastructure characteristics, LTE networks are highly expected to become the deployment network of M2M devices.

What is enhanced dedicated channel (E-DCH)?

Enhanced dedicated channel (E-DCH) is a particular resource used for the facilitation of High-Speed Uplink Packet Access (HSUPA), a protocol to create high uplink speeds for data packets in 3G systems. In HSUPA, these types of additional channels provide additional signaling capacity.

How can HSPA enhance WCDMA 5 MHz performance?

In order to exploit the full potential of WCDMA 5 MHz operation, the performance of HSPA-based radio networks has been further enhanced in terms of spectrum efficiency, peak data rate and latency.

What is a downlink dpch (DCH)?

Within one downlink DPCH, dedicated data generated at Layer 2 and above, i.e. the dedicated transport channel (DCH), is transmitted in time-multiplex with control information generated at Layer 1 (known pilot bits, TPC commands, and an optional TFCI).

Who is the best company for WCDMA/HSPA?

Rohde & Schwarz provides a complete product portfolio for WCDMA/HSPA/HSPA+: digital standards on general-purpose equipment such as vector signal generators and signal and spectrum analyzers; communications testers and complete conformance test systems.