Preemption indication for new radio
Preempting a slot with a mini-slot for use in a wireless transmitter of a wireless communication network is presented. The method includes preempting a slot transmission to a wireless receiver with a mini-slot transmission to the wireless receiver, wherein the slot transmission comprises a plurality of time-frequency regions (TFRs), each TFR comprising a plurality of sub-regions. The method further includes transmitting a preemption indication to the wireless receiver, where the preemption indication includes a TFR position in time of one or more preempted TFRs in the slot transmission, a TFR position in frequency of the one or more preempted TFRs in the slot transmission and an identifier of one or more of the plurality a sub-regions of the one more preempted TFRs.
1. A method of preempting a slot with a mini-slot for use in a wireless transmitter of a wireless communication network, the method comprising:
preempting a slot transmission to a wireless receiver with a mini-slot transmission to the wireless receiver, wherein the slot transmission comprises a plurality of time-frequency regions (TFRs), each TFR comprising a plurality of sub-regions;
transmitting a preemption indication to the wireless receiver, wherein the interpretation of the pre-emption indication depends on RRC signalled parameters, wherein the preemption indication indicates:
a TFR position in time of one or more pre-empted TFRs in the slot transmission, wherein the TFR position in time identifies a TFR backward in time relative to the preemption indication; and
an identifier of one or more of the plurality of sub-regions of the one more preempted TFRs, wherein the identifier of one or more of the plurality of sub-regions of the one or more pre-empted TFRs comprises a bitmap with a bit position for each sub-region.
2. The method of claim 1 , wherein the TFR position in time of the one or more preempted TFRs in the slot transmission comprises an index of a TFR backward in time relative to the preemption indication within a maximum backward time.
3. The method of claim 1 , wherein the TFR position in frequency of the one or more preempted TFRs in the slot transmission comprises a fraction of the total bandwidth.
4. A network node comprising processing circuitry operable to:
preempt a slot transmission to a wireless receiver with a mini-slot transmission to the wireless receiver, wherein the slot transmission comprises a plurality of time-frequency regions (TFRs), each TFR comprising a plurality of sub-regions;
transmit a preemption indication to the wireless receiver, wherein the interpretation of the pre-emption indication depends on RRC signalled parameters, wherein the preemption indication indicates:
a TFR position in time of one or more pre-empted TFRs in the slot transmission, wherein the TFR position in time identifies a TFR backward in time relative to the preemption indication; and
an identifier of one or more of the plurality of sub-regions of the one more preempted TFRs, wherein the identifier of one or more of the plurality of sub-regions of the one or more pre-empted TFRs comprises a bitmap with a bit position for each sub-region.
5. A method of identifying a preempted mini-slot within a slot for use in a wireless receiver of a wireless communication network, the method comprising:
receiving, from a wireless transmitter, a slot transmission with a preempted mini-slot, wherein the slot transmission comprises a plurality of time-frequency regions (TFRs), each TFR comprising a plurality of sub-regions;
receiving a preemption indication from the wireless transmitter, wherein the interpretation of the pre-emption indication depends on RRC signalled parameters, wherein the preemption indication indicates:
a TFR position in time of one or more pre-empted TFRs in the slot transmission, wherein the TFR position in time identifies a TFR backward in time relative to the preemption indication; and
an identifier of one or more of the plurality of sub-regions of the one more preempted TFRs, wherein the identifier of one or more of the plurality of sub-regions of the one or more pre-empted TFRs comprises a bitmap with a bit position for each sub-region.
6. The method of claim 5 , wherein the TFR position in time of the one or more preempted TFRs in the slot transmission comprises an index of a TFR backward in time relative to the preemption indication within a maximum backward time.
7. The method of claim 5 , wherein the TFR position in frequency of the one or more preempted TFRs in the slot transmission comprises a fraction of the total bandwidth.
8. A wireless device comprising processing circuitry operable to:
receive, from a wireless transmitter, a slot transmission with a preempted mini-slot, wherein the slot transmission comprises a plurality of time-frequency regions (TFRs), each TFR comprising a plurality of sub-regions;
receive a preemption indication from the wireless transmitter, wherein the interpretation of the pre-emption indication depends on RRC signalled parameters, wherein the preemption indication indicates:
a TFR position in time of one or more pre-empted TFRs in the slot transmission, wherein the TFR position in time identifies a TFR backward in time relative to the preemption indication; and
an identifier of one or more of the plurality of sub-regions of the one more preempted TFRs, wherein the identifier of one or more of the plurality of sub-regions of the one or more pre-empted TFRs comprises a bitmap with a bit position for each sub-region.