How many Pucch formats exist?
There exist 3 different PUCCH formats. PUCCH format 1, 1a and 1b carry SRs and one or two HARQ ACK/NACKs, respectively. Multiplexing of SR with HARQ feedback is also possible. PUCCH format 2 can carry up to 11 bits of information is used for CSI feedback.
What is Pucch format in LTE?
LTE Quick Reference Go Back To Index Home : www.sharetechnote.com. PUCCH Format. PUCCH (Physical Uplink Control Channel) carries a set of information called “UCI(Uplink Control Information)”. (This is similar to PDCCH which carries DCI (Downlink control information)”.
What is LTE Pusch?
PUSCH (Physical Uplink Shared Channel) contains uplink user data. Uplink user allocations can be defined in the LTE Allocation Editor.
What is Pusch and Pucch in LTE?
The LTE uplink physical layer has a triplet of physical channels; Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH) and Physical Random Access Channel (PRACH). The PUSCH is used for transmitting user traffic data in multiplex with Uplink Control Information (UCI), if necessary.
What is scheduling request in LTE?
LTE Quick Reference Go Back To Index Home : www.sharetechnote.com. SR (Scheduling Request) SR is a special Physical Layer message for UE to ask Network to send UL Grant (DCI Format 0) so that UE can transmit PUSCH.
What is resource grid in LTE?
The subframe resource grid is represented in the LTE Toolbox as a multidimensional array of the following size. Therefore, the resource grid represents a subframe (two slots) and whole bandwidth, since there are 12 subcarriers per resource block.
Which channel is used for uplink scheduling?
10.2. LTE provides a random-access (transport) channel (RACH) in the UL, mainly utilized for initial radio-link establishment, handover, and synchronization. RACH may also carry UL scheduling requests if no dedicated physical uplink control channel (PUCCH) has been assigned.
How is LTE speed calculated?
If modulation used is 64 QAM (6 bits per symbol) then throughput will be 16.8×6=100.8Mbps for a single antenna port. If we consider a 2×2 MIMO system then this throughput will be double i.e. 100.8×2= 201.6 Mbps and with 4×4 MIMO system then throughput is about 100.8×4= 403.2 Mbps.
When does PUCCH mixed mode occur in LTE?
In my view, PUCCH mixed mode occurs, if same resource block is shared between two or more UEs to transmit the PUCCH format 1 by first (or second ) UE and the PUCCH format 2 by second (or first) UE.
What kind of information does PUCCH format carry?
PUCCH Format PUCCH (Physical Uplink Control Channel) carries a set of information called “UCI(Uplink Control Information)”. (This is similar to PDCCH which carries DCI (Downlink control information)”. Depending on what kind of information the UCI in PUCCH carries, PUCCH is classified into various formation as follows.
Can a LTE UE transmit both PUCCH and UCI?
UCI can also be transported using PUSCH channel. An LTE UE can never transmits both PUCCH and PUSCH during the same subframe. • If UE has application data OR RRC signalling then UCI is carried over PUSCH. • If UE does not have any application data OR RRC signalling then UCI is carried over PUCCH.
Which is uplink channel transmits PUCCH and Pusch?
UCI can also be transported using PUSCH channel. An LTE UE can never transmits both PUCCH and PUSCH during the same subframe. This is a stand-alone uplink physical channel. This PUCCH control signaling channel comprises following: