Support of UL SDT during MT SDT
Methods and apparatuses for support of UL SDT during MT SDT are disclosed. A method performed by a terminal device in a non Radio Resource Control (RRC)_CONNECTED state with a network device comprises receiving a paging for Mobile Terminating (MT) Small Data Transmission (SDT) from the network device; and determining whether to stop the MT SDT or not when uplink (UL) data expected to be transmitted by an Mobile Originating (MO) SDT arrives before the MT SDT completes.
1 . A user equipment (UE) for wireless communication, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the UE to:
receive a paging for Mobile Terminating (MT) Small Data Transmission (SDT) from a network device, wherein the UE is in a non-Radio Resource Control RRC)_CONNECTED state with the network device; and
determine whether to stop the MT SDT or not when uplink (UL) data expected to be transmitted by a Mobile Originating (MO) SDT arrives before the MT SDT completes,
wherein the MT SDT and the UL MO SDT are associated with a priority.
2 . The UE of claim 1 , wherein the at least one processor is further configured to cause the UE to:
initiate a UL MO SDT for the UL data; and
stop the MT SDT.
3 . The UE of claim 1 , wherein the at least one processor is further configured to cause the UE to:
initiate a UL MO SDT for the UL data; and
stop the MT SDT when the UL data is transmitted by the UL MO SDT.
4 . The UE of claim 1 , wherein the at least one processor is further configured to cause the UE to:
initiate a UL MO SDT for the UL data; and
stop the MT SDT when the UL MO SDT has a higher priority than the MT SDT.
5 . The UE of claim 1 , wherein each of the priority of the MT SDT and the priority of the UL MO SDT is determined by a priority of traffic transmitted therein.
6 . The UE of claim 1 , wherein each of the priority of the MT SDT and the priority of the UL MO SDT is determined by a highest priority among priorities of logical channels associated with SDT data or SDT data arrival.
7 . The UE of claim 1 , wherein the priority of the MT SDT is indicated in a DL message.
8 . The UE of claim 1 , wherein the priority of the UL MO SDT is configured to be higher than the priority of the MT SDT.
9 . The UE of claim 1 , wherein the at least one processor is further configured to cause the UE to:
initiate a Random Access Channel (RACH) for MT SDT; and
set a resume cause to mobile originate (mo)-SDT in Msg3 in the RACH for MT SDT.
10 . The UE of claim 1 , wherein the at least one processor is further configured to cause the UE to:
when configured grant-based SDT (CG-SDT) has been configured, respond to the MT SDT by the CG-SDT.
11 . The UE of claim 1 , wherein the at least one processor is further configured to cause the UE to:
transmit an indication of arrival of the UL data.
12 . A processor for wireless communication, comprising:
at least one controller coupled with at least one memory and configured to cause the processor to:
receive a paging for Mobile Terminating (MT) Small Data Transmission (SDT) from a network device, wherein the UE is in a non-Radio Resource Control RRC)_CONNECTED state with the network device; and
determine whether to stop the MT SDT or not when uplink (UL) data expected to be transmitted by a Mobile Originating (MO) SDT arrives before the MT SDT completes,
wherein the MT SDT and the UL MO SDT are associated with a priority.
13 . The processor of claim 12 , wherein the at least one controller is further configured to cause the processor to:
initiate a UL MO SDT for the UL data; and
stop the MT SDT.
14 . The processor of claim 12 , wherein the at least one controller is further configured to cause the processor to:
initiate a UL MO SDT for the UL data; and
stop the MT SDT when the UL data is transmitted by the UL MO SDT.
15 . The processor of claim 12 , wherein the at least one controller is further configured to cause the processor to:
when configured grant-based SDT (CG-SDT) has been configured, respond to the MT SDT by the CG-SDT.
16 . The processor of claim 12 , wherein the at least one controller is further configured to cause the processor to:
transmit an indication of arrival of the UL data.
17 . A method performed by a user equipment (UE), the method comprising:
receiving a paging for Mobile Terminating (MT) Small Data Transmission (SDT) from a network device when the UE is in a non-Radio Resource Control (RRC)_CONNECTED state with the network device; and
determining whether to stop the MT SDT or not when uplink (UL) data expected to be transmitted by a Mobile Originating (MO) SDT arrives before the MT SDT completes,
wherein the MT SDT and the UL MO SDT are associated with a priority.
18 . A user equipment (UE) for wireless communication, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the UE to:
receive a paging for Mobile Terminating (MT) Small Data Transmission (SDT), wherein the UE is in a non-Radio Resource Control (RRC)_CONNECTED state; and
stop the MT SDT when uplink (UL) data expected to be transmitted by a Mobile Originating (MO) SDT arrives before the MT SDT completes,
wherein the MT SDT and the UL MO SDT are associated with a priority.
19 . The UE of claim 18 , wherein each of the priority of the MT SDT and the priority of the UL MO SDT is determined by a priority of traffic transmitted therein.
20 . The UE of claim 18 , wherein each of the priority of the MT SDT and the priority of the UL MO SDT is determined by a highest priority among priorities of logical channels associated with SDT data or SDT data arrival.