What is logical channel prioritization?

Logical Channel Prioritization, LCP, procedure Based on the uplink transmission resource grant message signalled on the PDCCH, the UE has to decide on the amount of data for each logical channel to be included in the new MAC and, if necessary, also to allocate space for a MAC Control Element.

What is logical channel prioritization in LTE?

In LCP, Prioritize Bit Rate (PBR) is added to each logical channel. Hence while filling the MAC PDU, first it will take and add the minimum data i.e PBR from all the channels into the MAC PDU. After that if there are any space left in MAC PDU, then it will fill according to the priority.

What are logical channels?

A logical channel is defined by the type of information it carries and is generally classified as a control channel, used for transmission of control and configuration information necessary for operating an LTE system, or as a traffic channel, used for the user data.

What are the logical channels carried through Harq?

What are the Logical Channels carried through HARQ? Ans:CCCH, DCCH and DTCH logical channels.

What is the difference between physical channel and logical channel?

Physical channels can be used to transmit speech, data or signalling information. A physical channel may carry different messages, depending on information that is to be sent. These messages are called logical channels.

What are the types of logical channels in a GSM architecture?

There are two types of GSM logical channels, called Traffic CHannels (TCH) and Control CHannels (CCH). Traffic channels carry digitally encoded user speech or user data and have identical functions and formats on both the forward and reverse link.

What are the types of logical channels in GSM architecture?

What is the difference between logical channel and physical channel?

The Physical channels are determined by the timeslot, whereas the logical channels are determined by the information carried within the physical channel. It can be further summarised by saying that several recurring timeslots on a carrier constitute a physical channel.

How many logical channels are there in LTE?

Different channels provide interfaces to the higher layers of the LTE protocol stack and enables an orderly and defined segregation of the data. There are three types of channels into which the various data channels are grouped.

What is HARQ process?

HARQ process relies upon receiving ACK for the packets. If the sender sends a packet and then waits for the ACK to send another packet, it is called a SAW(stop and wait) process. It increases the round trip time ( sender and receiver processing time + propagation delays).

Which type of channels are used in GSM?

There are two main types of GSM channels viz. physical channel and logical channel. Physical channel is specified by specific time slot/carrier frequency.