Scheduling request resource configuration
There is disclosed a method of operating a user equipment in a radio access network. The user equipment is configured with a reference time resource available, in one or more slots, for transmission of a scheduling request by the user equipment, the reference time resource includes a reference symbol R, wherein each of the one or more slots has a slot duration that is based on a number N of symbols in the slot. The user equipment further is configured with a requesting periodicity P indicating a periodicity with a time period shorter than the slot duration. The method includes transmitting a scheduling request message at a request transmission symbol T which is based on the reference symbol R and the periodicity P. The disclosure also pertains to related methods and devices.
1. A method of operating a user equipment in a New Radio (NR) radio access network, the method comprising:
receiving a Radio Resource Control (RRC) message configuring the user equipment with a reference time resource, the reference time resource being available, in at least one slot, for transmission of a scheduling request by the user equipment, the reference time resource comprising a reference symbol R, the reference symbol R being configured for a starting slot based on a slot offset, the slot offset being predefined, each of the at least one slot having a slot duration of 14 symbols, the received RRC message further configuring the user equipment with a requesting periodicity P indicating a periodicity with a time period shorter than the slot duration, the requesting periodicity P corresponding to one of 2 and 7 symbols; and
transmitting a scheduling request message on a Physical Uplink Control Channel (PUCCH) at a request transmission symbol T which is based on the reference symbol R and the requesting periodicity P, the scheduling request message being a PUCCH format 0 message transmitted over 1 symbol.
2. The method according to claim 1 , wherein the RRC message explicitly indicates at least one of P and R.
3. The method according to claim 1 , wherein the reference time resource is configured as one of 1 symbol, more than 1 symbol, and between 4 and 14 symbols.
4. A user equipment for a New Radio (NR) radio access network, the user equipment comprising:
processing circuitry and radio circuitry, and being configured to utilize the processing circuitry and radio circuitry to:
receive a Radio Resource Control (RRC) message configuring the user equipment with a reference time resource, the reference time resource being available, in at least one slot, for transmission of a scheduling request by the user equipment, the reference time resource comprising a reference symbol R, the reference symbol R being configured for a starting slot based on a slot offset, the slot offset being predefined, each of the at least one slot having a slot duration of 14 symbols, the received RRC message further configuring the user equipment with a requesting periodicity P indicating a periodicity with a time period shorter than the slot duration, the requesting periodicity P corresponding to one of 2 and 7 symbols; and
transmit a scheduling request message on a Physical Uplink Control Channel (PUCCH) at a request transmission symbol T which is based on the reference symbol R and the requesting periodicity P, the scheduling request message being a PUCCH format 0 message transmitted over 1 symbol.
5. The user equipment according to claim 4 , wherein the RRC message explicitly indicates at least one of P and R.
6. The user equipment according to claim 4 , wherein the reference time resource is configured as one of 1 symbol, 2 symbols, and one of between 4 and 14 symbols.
7. A network node for a New Radio (NR) radio access network, the network node comprising:
processing circuitry and radio circuitry, and being configured to utilize the processing circuitry and radio circuitry to:
configure a user equipment by transmitting, to the user equipment, a Radio Resource Control (RRC) message configuring the user equipment with a reference time resource, the reference time resource being available, in at least one slot, for transmission of a scheduling request by the user equipment, the reference time resource comprising a reference symbol R, the reference symbol R being configured for a starting slot based on a slot offset, the slot offset being predefined, each of the at least one slot having a slot duration of 14 symbols, the transmitted RRC message further configuring the user equipment with a requesting periodicity P indicating a periodicity with a time period shorter than the slot duration, the requesting periodicity P corresponding to one of 2 and 7 symbols; and
receive a scheduling request message on a Physical Uplink Control Channel (PUCCH) at a request transmission symbol RC which is based on the reference symbol R and the requesting periodicity P, the scheduling request message being a PUCCH format 0 message transmitted over 1 symbol.
8. The network node according to claim 7 , wherein the RRC message explicitly indicates at least one of P and R.