Radio communication technique for handling idle times
A technique for using radio resources in fixed frame periods, FFPs, ( 500 ) on a channel for radio communication in a radio network comprising a first node ( 100 ) and a second node ( 200 ) is described. Each of the FFPs ( 500 ) comprises an idle time, IT, ( 502 ) for clear channel assessment, CCA, ( 506 ) of the channel and a maximum channel occupancy time, M-COT, ( 504 ) for occupying the channel depending on the CCA ( 506 ). As to a method aspect of the technique performed by the first node ( 100 ), a method ( 300 ) comprises the step of selectively monitoring ( 302 ) the radio resources in the FFPs ( 500 ) on the channel. The selective monitoring ( 302 ) comprises refraining from monitoring a first set ( 602 ) of the radio resources, which is allocated to a first message of the second node ( 200 ) and which is partially or completely in the IT ( 502 ). Alternatively or in addition, the method ( 300 ) comprises the step of selectively transmitting ( 304 ) on the radio resources in the FFPs ( 500 ) on the channel. The selective transmitting ( 304 ) comprises refraining from transmitting on a first set ( 602 ) of the radio resources, which is allocated to a first message of the first node ( 100 ) and which is partially or completely in the IT ( 502 ).
1 . A method of using radio resources in fixed frame periods (FFPs) on a channel for radio communication in a radio network comprising a first node and a second node, each of the FFPs comprising an idle time (IT) for clear channel assessment (CCA) of the channel and a maximum channel occupancy time (M-COT) for occupying the channel depending on the CCA, the method performed by the first node comprising or initiating at least one of the steps of:
selectively monitoring the radio resources in the FFPs on the channel, wherein the selective monitoring comprises refraining from monitoring a first set of the radio resources, which is allocated to a first message of the second node and which is partially or completely in the IT; and
selectively transmitting on the radio resources in the FFPs on the channel, wherein the selective transmitting comprises refraining from transmitting on a first set of the radio resources, which is allocated to a first message of the first node and which is partially or completely in the IT.
2 . The method of claim 1 , wherein the refraining from monitoring the first set of the radio resources comprises refraining from decoding or refraining from attempting to decode the first message of the second node.
3 . The method of claim 1 , wherein the selective monitoring further comprises monitoring a second set of the radio resources, which is allocated to a second message of the second node and which is completely in the M-COT.
4 . The method of claim 1 , wherein the channel is occupied by the second node for transmitting the second message on the second set of radio resources during a channel occupancy time (COT) within the M-COT subsequent to the CCA indicating clearance of the channel.
5 . The method of claim 1 , wherein the FFPs comprise at least one first FFP used by the first node and at least one second FFP used by the second node.
6 . The method of claim 1 , wherein the first node and the second node use the same or synchronized FFPs.
7 . The method of claim 1 , wherein the FFPs are assigned to the first node by the second node.
8 . The method of claim 1 , further comprising or initiating:
performing the CCA by the first node.
9 . The method of claim 1 , wherein the first node is a radio device and the second node is a base station providing radio access to the radio device, or wherein the first node is a base station providing radio access to a radio device and the second node is the radio device.
10 . The method of claim 9 , wherein the radio network comprises a radio access network (RAN) wherein the RAN comprises the base station, and wherein the radio device is configured for radio access to the RAN.
11 . The method of claim 1 , wherein the first node is a first radio device and the second node is a second radio device providing radio access to the first radio device.
12 . A first node for using radio resources in fixed frame periods (FFPs) on a channel for radio communication in a radio network comprising the first node and a second node, each of the FFPs comprising an idle time (IT) for clear channel assessment (CCA) of the channel and a maximum channel occupancy time (M-COT) for occupying the channel depending on the CCA, the first node comprising memory operable to store instructions and processing circuitry operable to execute the instructions, such that the first node is operable to at least one of:
selectively monitor the radio resources in the FFPs on the channel, wherein the selective monitoring comprises refraining from monitoring a first set of the radio resources, which is allocated to a first message of the second node and which is partially or completely in the IT; and
selectively transmit on the radio resources in the FFPs on the channel, wherein the selective transmitting comprises refraining from transmitting on a first set of the radio resources, which is allocated to a first message of the first node and which is partially or completely in the IT.
13 . The first node of claim 12 , wherein the refraining from monitoring the first set of the radio resources comprises refraining from decoding or refraining from attempting to decode the first message of the second node.
14 . The first node of claim 12 , wherein the selective monitoring further comprises monitoring a second set of the radio resources, which is allocated to a second message of the second node and which is completely in the M-COT.
15 . The first node of claim 12 , wherein the channel is occupied by the second node for transmitting the second message on the second set of radio resources during a channel occupancy time (COT) within the M-COT subsequent to the CCA indicating clearance of the channel.
16 . The first node of claim 12 , wherein the FFPs comprise at least one first FFP used by the first node and at least one second FFP used by the second node.
17 . The first node of claim 12 , wherein the first node and the second node use the same or synchronized FFPs.
18 . The first node of claim 12 , wherein the FFPs are assigned to the first node by the second node.
19 . The first node of claim 12 , wherein the first node is operable to perform or initiate the CCA.
20 . The first node of claim 12 , wherein the first node is a radio device and the second node is a base station providing radio access to the radio device, or wherein the first node is a base station providing radio access to a radio device and the second node is the radio device.
21 . The first node of claim 20 , wherein the radio network comprises a radio access network (RAN) wherein the RAN comprises the base station, and wherein the radio device is configured for radio access to the RAN.
22 . The first node of claim 12 , wherein the first node is a first radio device and the second node is a second radio device providing radio access to the first radio device.