Delay status reporting for extended reality (XR) multi-modal traffic
Certain aspects of the present disclosure provide a method for wireless communications at a user equipment (UE). The UE may generate a delay status report (DSR) for at least two traffic flows on different logical channels. The at least two traffic flows have a maximum synchronization threshold between each other. The DSR may include at least one remaining delay budget (RDB) parameter related to an RDB of at least one of a first traffic flow or a second traffic flow and the maximum synchronization threshold. The UE may transmit the DSR.
1 . An apparatus for wireless communications at a user equipment (UE), comprising:
a memory comprising instructions; and
one or more processors configured, individually or in any combination, to execute the instructions and cause the apparatus to:
generate a delay status report (DSR) for at least two traffic flows on different logical channels, wherein the at least two traffic flows have a maximum synchronization threshold between each other, and wherein the DSR comprises at least one remaining delay budget (RDB) parameter related to an RDB of at least one of a first traffic flow or a second traffic flow and the maximum synchronization threshold; and
transmit the DSR.
2 . The apparatus of claim 1 , wherein the at least one RDB parameter comprises at least one of:
a first RDB for the first traffic flow on a first logical channel;
the first RDB and the maximum synchronization threshold;
a second RDB for the second traffic flow on a second logical channel; or
the second RDB and the maximum synchronization threshold.
3 . The apparatus of claim 1 , wherein the maximum synchronization threshold indicates a maximum allowable delay time for delivery of a set of data packets of one traffic flow of the at least two traffic flows with respect to delivery of a set of data packets of another traffic flow of the at least two traffic flows.
4 . The apparatus of claim 1 , wherein each traffic flow comprises data packets belonging to at least one of: one or more protocol data units (PDUs) or one or more PDU sets.
5 . The apparatus of claim 1 , wherein:
the first traffic flow comprises a first set of data packets of a first data type;
the second traffic flow comprises a second set of data packets of a second data type; and
the first data type is different from the second data type.
6 . The apparatus of claim 1 , wherein:
the at least one RDB parameter comprises a first RDB for the first traffic flow on a first logical channel, and
a second RDB for the second traffic flow on a second logical channel is based on the first RDB.
7 . The apparatus of claim 1 , wherein:
the at least one RDB parameter comprises a second RDB for the second traffic flow on a second logical channel, and
a first RDB for the first traffic flow on a first logical channel is based on the second RDB.
8 . The apparatus of claim 2 , wherein:
the first RDB indicates a first duration of remaining time for delivery of a first set of data packets of the first traffic flow; and
the second RDB indicates a second duration of remaining time for delivery of a second set of data packets of the second traffic flow.
9 . The apparatus of claim 8 , wherein a reference time for the first duration of remaining time is based on: a transmission time of the first set of data packets or a transmission time of the second set of data packets along with the maximum synchronization threshold.
10 . The apparatus of claim 8 , wherein a reference time for the second duration of remaining time is based on: a transmission time of the second set of data packets or a transmission time of the first set of data packets along with the maximum synchronization threshold.
11 . The apparatus of claim 1 , wherein:
the at least one RDB parameter comprises a first RDB for the first traffic flow on a first logical channel; and
a scheduling time of data packets of the second traffic flow on a second logical channel is less than a value of the maximum synchronization threshold from a scheduling time of data packets of the first traffic flow on the first logical channel.
12 . The apparatus of claim 1 , wherein the one or more processors are configured, individually or in any combination, to execute the instructions and cause the apparatus to transmit a separate buffer status report (BSR) for each of the logical channels or a single BSR for all the logical channels.
13 . An apparatus for wireless communications at a network entity, comprising:
a memory comprising instructions; and
one or more processors configured, individually or in any combination, to execute the instructions and cause the apparatus to:
receive a delay status report (DSR) for at least two traffic flows on different logical channels, wherein the at least two traffic flows have a maximum synchronization threshold between each other, and wherein the DSR comprises at least one remaining delay budget (RDB) parameter related to an RDB of at least one of a first traffic flow or a second traffic flow and the maximum synchronization threshold; and
transmit scheduling information for uplink transmissions in accordance with the DSR.
14 . The apparatus of claim 13 , wherein the at least one RDB parameter comprises at least one of:
a first RDB for the first traffic flow on a first logical channel;
the first RDB and the maximum synchronization threshold;
a second RDB for the second traffic flow on a second logical channel; or
the second RDB and the maximum synchronization threshold.
15 . The apparatus of claim 13 , wherein the maximum synchronization threshold indicates a maximum allowable delay time for delivery of a set of data packets of one traffic flow of the at least two traffic flows with respect to delivery of a set of data packets of another traffic flow of the at least two traffic flows.
16 . The apparatus of claim 13 , wherein each traffic flow comprises data packets belonging to at least one of: one or more protocol data units (PDUs) or one or more PDU sets.
17 . The apparatus of claim 13 , wherein:
the first traffic flow comprises a first set of data packets of a first data type;
the second traffic flow comprises a second set of data packets of a second data type; and
the first data type is different from the second data type.
18 . The apparatus of claim 13 , wherein:
the at least one RDB parameter comprises a first RDB for the first traffic flow on a first logical channel, and
a second RDB for the second traffic flow on a second logical channel is based on the first RDB.
19 . The apparatus of claim 13 , wherein:
the at least one RDB parameter comprises a second RDB for the second traffic flow on a second logical channel, and
a first RDB for the first traffic flow on a first logical channel is based on the second RDB.
20 . The apparatus of claim 14 , wherein:
the first RDB indicates a first duration of remaining time for delivery of a first set of data packets of the first traffic flow; and
the second RDB indicates a second duration of remaining time for delivery of a second set of data packets of the second traffic flow.
21 . The apparatus of claim 20 , wherein a reference time for the first duration of remaining time is based on: a transmission time of the first set of data packets or a transmission time of the second set of data packets along with the maximum synchronization threshold.
22 . The apparatus of claim 20 , wherein a reference time for the second duration of remaining time is based on: a transmission time of the second set of data packets or a transmission time of the first set of data packets along with the maximum synchronization threshold.
23 . The apparatus of claim 13 , wherein:
the at least one RDB parameter comprises a first RDB for the first traffic flow on a first logical channel; and
a scheduling time of data packets of the second traffic flow on a second logical channel is less than a value of the maximum synchronization threshold from a scheduling time of data packets of the first traffic flow on the first logical channel.
24 . The apparatus of claim 13 , wherein the one or more processors are configured, individually or in any combination, to execute the instructions and cause the apparatus to receive a separate buffer status report (BSR) for each of the logical channels or a single BSR for all the logical channels.
25 . A method for wireless communications at a user equipment (UE), comprising:
generating a delay status report (DSR) for at least two traffic flows on different logical channels, wherein the at least two traffic flows have a maximum synchronization threshold between each other, and wherein the DSR comprises at least one remaining delay budget (RDB) parameter related to an RDB of at least one of a first traffic flow or a second traffic flow and the maximum synchronization threshold; and
transmitting the DSR.
26 . The method of claim 25 , wherein the at least one RDB parameter comprises at least one of:
a first RDB for the first traffic flow on a first logical channel;
the first RDB and the maximum synchronization threshold;
a second RDB for the second traffic flow on a second logical channel; or
the second RDB and the maximum synchronization threshold.
27 . The method of claim 25 , wherein the maximum synchronization threshold indicates a maximum allowable delay time for delivery of a set of data packets of one traffic flow of the at least two traffic flows with respect to delivery of a set of data packets of another traffic flow of the at least two traffic flows.
28 . A method for wireless communications at a network entity, comprising:
receiving a delay status report (DSR) for at least two traffic flows on different logical channels, wherein the at least two traffic flows have a maximum synchronization threshold between each other, and wherein the DSR comprises at least one remaining delay budget (RDB) parameter related to an RDB of at least one of a first traffic flow or a second traffic flow and the maximum synchronization threshold; and
transmitting scheduling information for uplink transmissions in accordance with the DSR.
29 . The method of claim 28 , wherein the at least one RDB parameter comprises at least one of:
a first RDB for the first traffic flow on a first logical channel;
the first RDB and the maximum synchronization threshold;
a second RDB for the second traffic flow on a second logical channel; or
the second RDB and the maximum synchronization threshold.
30 . The method of claim 28 , wherein the maximum synchronization threshold indicates a maximum allowable delay time for delivery of a set of data packets of one traffic flow of the at least two traffic flows with respect to delivery of a set of data packets of another traffic flow of the at least two traffic flows.