Bundling for a configured grant or assignment in a wireless communication system
A wireless device is configured to receive control signaling from a radio network node. The control signaling configures an uplink grant or downlink assignment to periodically recur. The control signaling also configures a number of redundant transmissions of a transport block that are transmittable within a bundle of the configured uplink grant or downlink assignment, where the number is greater than or equal to one. The control signaling may also configure different sets of transmission occasions within which the number of redundant transmissions are transmittable during, or starting during, a period of the configured uplink grant or downlink assignment.
1. A method performed by a wireless device, the method comprising:
receiving, from a radio network node, control signaling that configures one of an uplink grant and a downlink assignment to periodically recur, configures a number of redundant transmissions of a transport block that are transmittable within a bundle of the configured uplink grant or downlink assignment, the number being greater than or equal to one, and configures different sets of transmission occasions within which the number of redundant transmissions are one of transmittable during and starting during a period of the one of the uplink grant and the downlink assignment, the control signaling configuring the different sets of transmission occasions by configuring an offset, the control signaling including an offset-step field that indicates the offset, the offset being a number of slots up to a maximum number given by:
Δ
is
the
j
max
=
⌊
Periodicity
-
repK
Δ
⌋
where Δ is step size of the offset, Periodicity is the periodicity of configured uplink grants, repK is a duration of a set of transmission occasions, and where the periodicity and step size are in terms of a number of slots:
the configuring being a function of the offset and the configured uplink grant or downlink assignment being a configured downlink assignment; and
attempting to detect the number of redundant transmissions of a transport block within each of one or more of the different sets of transmission occasions.
2. The method of claim 1 , further comprising determining, as a function of the period and the offset, a number of the different sets of transmission occasions.
3. The method of claim 1 , wherein the control signaling configures the different sets of transmission occasions by configuring a number of the different sets of transmission occasions.
4. The method of claim 1 , wherein the redundant transmissions of a transport block within a bundle are hybrid automatic repeat request (HARQ) retransmissions of the transport block, with each HARQ retransmission being transmitted without waiting for feedback from a previous transmission within the bundle.
5. The method of claim 4 , wherein the different HARQ retransmissions comprise respective redundancy versions of the transport block, wherein a first redundancy version in a redundancy version sequence for the transport block is transmittable in the first transmission occasion of each of the different sets of transmission occasions.
6. The method of claim 1 , further comprising one of transmitting and receiving according to the configured one of the uplink grant and the downlink assignment as configured by the control signaling.
7. The method of claim 1 , wherein the configured one of the uplink grant and the downlink assignment is a configured uplink grant, wherein the control signaling comprises a ConfiguredGrantConfig information element of a Radio Resource Control (RRC) message.
8. The method of claim 1 , further comprising:
obtaining a transport block to transmit to the radio network node; and
selecting, from among the different sets of transmission occasions, a set of transmission occasions within which to transmit the number of redundant transmissions of the transport block, wherein the selecting comprises selecting the next set of transmission occasions that occurs one of after the transport block is obtained and after the number of redundant transmissions of the transport block are obtained.
9. The method of claim 1 , wherein the configured one of the uplink grant and the downlink assignment is a configured downlink assignment, and wherein the control signaling comprises a SPS-Config information element of a Radio Resource Control (RRC) message.
10. A method performed by a radio network node, the method comprising:
transmitting, to a wireless device, control signaling that configures one of an uplink grant and a downlink assignment to periodically recur, configures a number of redundant transmissions of a transport block that are transmittable within a bundle of the one of the configured uplink grant and the downlink assignment, the number being greater than or equal to one, and configures different sets of transmission occasions within which the number of redundant transmissions are transmittable one of during and starting during a period of the configured uplink grant or downlink assignment, the control signaling configuring the different sets of transmission occasions by configuring an offset, the offset being a number of slots up to a maximum number given by:
Δ
is
the
j
max
=
⌊
Periodicity
-
repK
Δ
⌋
where Δ is step size of the offset, Periodicity is the periodicity of configured uplink grants, repK is a duration of a set of transmission occasions, and where the periodicity and step size are in terms of a number of slots, D
the configuring being a function of the offset;
the configured uplink grant or downlink assignment is a configured downlink assignment;
obtaining a transport block to transmit to the wireless device; and
selecting, from among the different sets of transmission occasions, a set of transmission occasions within which to transmit the number of redundant transmissions of the transport block, wherein said selecting comprises selecting the next set of transmission occasions that occurs after the transport block is obtained or after the number of redundant transmissions of the transport block are obtained.
11. The method of claim 10 , further comprising determining, as a function of the period and the offset, a number of the different sets of transmission occasions.
12. The method of claim 10 , wherein the control signaling configures the different sets of transmission occasions by configuring a number of the different sets of transmission occasions.
13. The method of claim 10 , wherein the redundant transmissions of a transport block within a bundle are hybrid automatic repeat request (HARQ) retransmissions of the transport block, with each HARQ retransmission being transmitted without waiting for feedback from a previous transmission within the bundle.
14. The method of claim 13 , wherein the different HARQ retransmissions comprise respective redundancy versions of the transport block, wherein a first redundancy version in a redundancy version sequence for the transport block is transmittable in the first transmission occasion of each of the different sets of transmission occasions.
15. The method of claim 10 , further comprising one of transmitting and receiving according to the configured one of the uplink grant and the downlink assignment as configured by the control signaling.
16. The method of claim 10 , wherein the configured one of the uplink grant and the downlink assignment is a configured downlink assignment, and wherein the control signaling comprises a SPS-Config information element of a Radio Resource Control (RRC) message.
17. A wireless device comprising:
communication circuitry; and
processing circuitry configured to:
receive, from a radio network node, control signaling that configures one of an uplink grant and a downlink assignment to periodically recur, configures a number of redundant transmissions of a transport block that are transmittable within a bundle of the configured one of the uplink grant and the downlink assignment, the number being greater than or equal to one, and configures different sets of transmission occasions within which the number of redundant transmissions are transmittable one of during and starting during a period of the configured one of the uplink grant and the downlink assignment, the control signaling configuring the different sets of transmission occasions by configuring an offset, the offset being a number of slots up to a maximum number given by:
Δ
is
the
j
max
=
⌊
Periodicity
-
repK
Δ
⌋
where Δ is step size of the offset, Periodicity is the periodicity of configured uplink grants, repK is a duration of a set of transmission occasions, and where the periodicity and step size are in terms of a number of slots, D;
the configuring being a function of the offset;
the configured one of the uplink grant and the downlink assignment is a configured downlink assignment; and
attempt to detect the number of redundant transmissions of a transport block within each of one or more of the different sets of transmission occasions.
18. A radio network node comprising:
communication circuitry; and
processing circuitry configured to:
transmit, to a wireless device, control signaling that configures one of an uplink grant and a downlink assignment to periodically recur, configures a number of redundant transmissions of a transport block that are transmittable within a bundle of the configured one of the uplink grant and the downlink assignment, the number being greater than or equal to one, and configures different sets of transmission occasions within which the number of redundant transmissions are transmittable one of during and starting during a period of the configured one of the uplink grant and the downlink assignment, the control signaling configuring the different sets of transmission occasions by configuring an offset, the offset being a number of slots up to a maximum number given by:
Δ
is
the
j
max
=
⌊
Periodicity
-
repK
Δ
⌋
where Δ is step size of the offset, Periodicity is the periodicity of configured uplink grants, repK is a duration of a set of transmission occasions, and where the periodicity and step size are in terms of a number of slots, D;
the configuring being a function of the offset;
the configured one of the uplink grant and downlink assignment being a configured downlink assignment;
obtain a transport block to transmit to the wireless device; and
select, from among the different sets of transmission occasions, a set of transmission occasions within which to transmit the number of redundant transmissions of the transport block, wherein said selecting comprises selecting the next set of transmission occasions that occurs after the transport block is obtained or after the number of redundant transmissions of the transport block are obtained.