Data scheduling in high frequency
A wireless device may receive one or more configuration parameters, of a cell, for physical downlink control channel (PDCCH) monitoring. The one or more configuration parameters may indicate a time duration of a span of one or more symbols for the PDCCH monitoring, and a time gap between two consecutive spans. The wireless device may determine a buffering time offset, for buffering data scheduled by a PDCCH transmission, based on the time gap and a subcarrier spacing of the cell. The wireless device may receive, in a first radio resource, downlink control information (DCI) scheduling a transport block (TB) in a second radio resource. The wireless device may drop the TB in response to a duration, in time, between the first radio resource and the second radio resource being less than, or equal to, the buffering time offset.
1 . A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
transmit a wireless device capability message indicating that the wireless device supports a maximum number of downlink control information (DCIs) per a span, wherein the span comprises one or more consecutive symbols for physical downlink control channel (PDCCH) monitoring in a slot;
receive one or more configuration parameters, of a cell, for PDCCH monitoring indicating:
a time duration of the span comprising the one or more consecutive symbols for the PDCCH monitoring; and
a time gap between starting symbols of two consecutive spans;
determine a buffering time offset, for buffering data scheduled by a PDCCH transmission, based on the time gap between starting symbols of two consecutive spans, a subcarrier spacing of the cell, the maximum number of DCIs per span;
receive, in a first radio resource, a DCI scheduling a transport block (TB) in a second radio resource; and
drop the TB in response to a duration, in time, between the first radio resource and the second radio resource being less than, or equal to, the buffering time offset.
2 . The wireless device of claim 1 , wherein dropping the TB further comprises skipping buffering the TB.
3 . The wireless device of claim 1 , wherein instructions, when executed by the one or more processors, further cause the wireless device to:
receive, in a third radio resource, a second DCI scheduling a second TB in a fourth radio resource; and
determine to buffer the second TB in response to a second duration, in time, between the third radio resource and the fourth radio resource being greater than the buffering time offset.
4 . The wireless device of claim 1 , wherein the DCI indicates the duration between the first radio resource and the second radio resource.
5 . The wireless device of claim 1 , wherein:
the first radio resource is a first slot; and
the second radio resource is a second slot.
6 . The wireless device of claim 1 , wherein the buffering time offset is greater than one slot based on the subcarrier spacing of the cell.
7 . The wireless device of claim 1 , when executed by the one or more processors, further cause the wireless device to determine a processing time of the DCI based on the time gap and the time duration.
8 . The wireless device of claim 1 , wherein the one or more consecutive symbols of the span comprise one or more PDCCH monitoring occasions of one or more search spaces of a control resource set (CORESET) of an active bandwidth part (BWP) of the cell.
9 . The wireless device of claim 1 , wherein instructions, when executed by the one or more processors, further cause the wireless device to transmit, to a base station, a negative acknowledgement in response to dropping the TB.
10 . The wireless device of claim 1 , wherein instructions, when executed by the one or more processors, further cause the wireless device to determine a processing time of the DCI based on the time gap and the time duration.
11 . A method comprising:
transmitting, by a wireless device, a wireless device capability message indicating that the wireless device supports a maximum number of downlink control information (DCIs) per a span, wherein the span comprises one or more consecutive symbols for physical downlink control channel (PDCCH) monitoring in a slot;
receiving one or more configuration parameters, of a cell, for PDCCH monitoring indicating:
a time duration of the span comprising the one or more consecutive symbols for the PDCCH monitoring; and
a time gap between starting symbols of two consecutive spans;
determining a buffering time offset, for buffering data scheduled by a PDCCH transmission, based on the time gap between starting symbols of two consecutive spans, a subcarrier spacing of the cell, and the maximum number of DCIs per span;
receiving, in a first radio resource, a DCI scheduling a transport block (TB) in a second radio resource; and
dropping the TB in response to a duration, in time, between the first radio resource and the second radio resource being less than, or equal to, the buffering time offset.
12 . The method of claim 11 , wherein dropping the TB further comprises skipping buffering the TB.
13 . The method of claim 11 , further comprising transmitting, to a base station, a negative acknowledgement in response to dropping the TB.
14 . The method of claim 11 , further comprising:
receiving, in a third radio resource, a second DCI scheduling a second TB in a fourth radio resource; and
determining to buffer the second TB in response to a second duration, in time, between the third radio resource and the fourth radio resource being greater than the buffering time offset.
15 . The method of claim 11 , wherein the DCI indicates the duration between the first radio resource and the second radio resource.
16 . The method of claim 11 , wherein:
the first radio resource is a first slot; and
the second radio resource is a second slot.
17 . The method of claim 11 , wherein the buffering time offset is greater than one slot based on the subcarrier spacing of the cell.
18 . The method of claim 11 , further comprising determining a processing time of the DCI based on the time gap and the time duration.
19 . The method of claim 11 , wherein the one or more consecutive symbols of the span comprise one or more PDCCH monitoring occasions of one or more search spaces of a control resource set (CORESET) of an active bandwidth part (BWP) of the cell.
20 . A system comprising:
a base station comprising one or more first processors and memory storing instructions that, when executed by the one or more first processors, cause the base station to:
transmit one or more configuration parameters, of a cell, for physical downlink control channel (PDCCH) monitoring indicating:
a time duration of a span, wherein the span comprises one or more consecutive symbols for physical downlink control channel (PDCCH) monitoring in a slot; and
a time gap between starting symbols of two consecutive spans; and
a wireless device comprising one or more first processors and memory storing instructions that, when executed by the one or more first processors, cause the wireless device to:
transmit a wireless device capability message indicating that the wireless device supports a maximum number of downlink control information (DCIs) per the span comprising the one or more consecutive symbols for PDCCH monitoring;
receive, from the base station, the one or more configuration parameters;
determine a buffering time offset, for buffering data scheduled by a PDCCH transmission, based on the time gap between starting symbols of two consecutive spans, a subcarrier spacing of the cell, and the maximum number of DCIs per span;
receive, in a first radio resource, a DCI scheduling a transport block (TB) in a second radio resource; and
drop the TB in response to a duration, in time, between the first radio resource and the second radio resource being less than, or equal to, the buffering time offset.