NR PUCCH format0 sequence generation and detection mechanism

Sequence generation

The sequence is simple , Is the local base sequence times the cyclic shift

fmt0 How to transmit SR HARQ-ACK

Case one ： Transmission only harq-ack When , distinguish 1bit still 2bit

Cyclic shift α Three parts m0(ue Level ),mcs(ue Level ),ncs( Community sector , Distinguish between time slots and symbols )
It can be determined by detecting the power on each cyclic shift ue What was sent , transmission 1bit harq-ack When , The base station detects {0,3}, When the maximum power is 0 Last time , Namely nack, When the maximum over activation detection power appears at 3 The time is ack. transmission 2bit When , Calculate at the same time {0,3,6,9} Power on , The maximum over activation detection occurs in 0 The time is 0,0 , And so on .

The second case ： Transmission only sr When ：mcs=0

testing 0 The location of , If the activation threshold is exceeded, it means ue Issued sr, No activation threshold indicates sr No hair sr.
The UE transmits a PUCCH in the PUCCH resource for the corresponding SR configuration only when the UE transmits a positive SR. For a positive SR transmission using PUCCH format 0, the UE transmits the PUCCH as described in [4, TS 38.211] by obtaining as described for HARQ-ACK information in clause 9.2.3 and by setting .

The second case ： stay sr The cycle of , transmission harq-ack

When sr Periodic transmission of 1bit Of harq-ack When , The base station detects {0,6,3,9}, When the threshold is exceeded, the maximum power appears in {0.6} in , Stated ue No hair sr, When the threshold is exceeded, the maximum power appears in {3,9} in , explain ue Sent sr.

When sr Periodic transmission of 2bit Of harq-ack When , The base station detects {0,3,6,9,1,4,7,10}, When the maximum power of the door line appears {0.3,6,9} When it's time to explain ue No hair sr, When the threshold is exceeded, the maximum power appears in {1,4,7,10} When , explain ue Sent sr.