Scheduling transmissions over preconfigured uplink resources

A method performed by a network node for scheduling a plurality of wireless devices with periodic preconfigured uplink shared channel resources, the method comprising:

• configuring a wireless device of the plurality of wireless devices with a preconfigured uplink resource, PUR, the PUR having a transmission length and a periodicity, the wireless device configured PUR having a periodicity derived from a set of PUR periodicities used by the network node which are multiples of a smallest PUR period;
• the PUR being configured based at least in part on at least one multiplexing criterion for multiplexing the plurality of wireless devices for PUR transmission, the at least one multiplexing criterion including:
• determining a transmission length and a periodicity of a PUR transmission of each wireless device of the plurality of wireless devices;
• grouping at least two of the wireless devices having PUR periodicities that are different with each periodicity of the at least two of the wireless devices being a multiple of another periodicity;
• and
• allocating a unique starting subframe for the PUR transmission for each wireless device in the group.

A wireless device configured to communicate with a network node, the wireless device comprising processing circuitry configured to:

• receive an indication of a pre-configured uplink resource, PUR, the PUR having a PUR transmission length, PUR period and PUR start position;
• the PUR being configured based at least in part on at least one multiplexing criterion for multiplexing a plurality of wireless devices, including the wireless device, for PUR transmission, the at least one multiplexing criterion including:
• a determination of a transmission length and a periodicity of a PUR transmission of each wireless device of the plurality of wireless devices;
• a grouping of at least two of the wireless devices having PUR periodicities that are different with each periodicity of the at least two of the wireless devices being a multiple of another periodicity;
• and
• an allocation of a unique starting subframe for the PUR transmission for each wireless device in the group;
• transmit an uplink transmission using the PUR in accordance with the indicated PUR transmission length, PUR period and PUR start position;
• and
• a length of the PUR period being a multiple of a smallest PUR periodicity.

A method performed by a wireless device, the method comprising:

• receiving an indication of a pre-configured uplink resource, PUR, the PUR having a PUR transmission length, PUR period and PUR start position;
• the PUR being configured based at least in part on at least one multiplexing criterion for multiplexing a plurality of wireless devices, including the wireless device, for PUR transmission, the at least one multiplexing criterion including:
• a determination of a transmission length and a periodicity of a PUR transmission of each wireless device of the plurality of wireless devices;
• a grouping of at least two of the wireless devices having PUR periodicities that are different with each periodicity of the at least two of the wireless devices being a multiple of another periodicity;
• and
• an allocation of a unique starting subframe for the PUR transmission for each wireless device in the group;
• transmitting an uplink transmission using the PUR in accordance with the indicated PUR duty cycle, PUR period and PUR start position;
• and a length of a PUR period being a multiple of a smallest PUR periodicity.

A non-transitory computer storage medium storing a computer program comprising instructions which when executed on one of a computer and processor circuitry cause the one of the computer and processor circuitry to perform a method for scheduling a plurality of wireless devices with periodic preconfigured uplink shared channel resources, the method comprising:

• configuring a wireless device of the plurality of wireless devices with a preconfigured uplink resource, PUR, the PUR having a transmission length and a periodicity, the wireless device configured PUR having a periodicity derived from a set of PUR periodicities used by a network node which are multiples of a smallest PUR period;
• the PUR being configured based at least in part on at least one multiplexing criterion for multiplexing the plurality of wireless devices for PUR transmission, the at least one multiplexing criterion including:
• determining a transmission length and a periodicity of a PUR transmission of each wireless device of the plurality of wireless devices;
• grouping at least two of the wireless devices having PUR periodicities that are different with each periodicity of the at least two of the wireless devices being a multiple of another periodicity;
• and
• allocating a unique starting subframe for the PUR transmission for each wireless device in the group.