What is logical channel prioritization in LTE?
In LTE, a Prioritized Bit Rate (PBR) is defined for each logical channel, in order to transmit data in order of importance but also to avoid starvation of data with lower priority. The PBR is the minimum data rate guaranteed for the logical channel.
What is logical channel prioritization?
The Logical Channel Prioritization procedure is applied when a new transmission is performed. One simple way to meet this purpose is to serve radio bearers in order of their priority.
What is a logical channel in LTE?
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 is the main distinction between a physical channel and a logical channel?
The Physical channels are determined by the timeslot, whereas the logical channels are determined by the information carried within the physical channel. These channels may either be used for user data (payload) or signalling to enable the system to operate correctly.
Which layer handles DRX in LTE?
the MAC layer
In addition, the MAC layer handles the semi-persistent scheduling (SPS) procedure and the discontinuous reception (DRX) procedure. The SPS procedure is used to increase the cell capacity for a voice service, and the DRX procedure is used to reduce the power consumption of the UE.
What are the different types of logical channels?
In GSM logical channels (see Figure 7.4) are used to carry traffic and control information. There are three types of logical channels: traffic channels (TCHs), control channels (CCHs), and the cell broadcast channel (CBCH). The traffic channels are used to transmit user information (speech or data).
What are the logical channels that the control channel consists?
According to the 3GPP standards , the logical channel types are: Broadcast Control Channel (BCCH), Paging Control Channel (PCCH), Common Control Channel (CCCH), Dedicated Control Channel (DCCH), Multi-cast Control Channel (MCCH), Dedicated Traffic Channel (DTCH), and Multicast Traffic Channel (MTCH).
How many logical channels are there in LTE?
Uplink Logical Channel : In Uplink we have 2 control channels and one traffic channel.
What is the difference between physical channel and logical channel?
What are the types of GSM logical channel?
In GSM logical channels (see Figure 7.4) are used to carry traffic and control information. There are three types of logical channels: traffic channels (TCHs), control channels (CCHs), and the cell broadcast channel (CBCH).
What are the different types of channels for 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.