Early data transmission in wireless communication system
Provided herein is design of early data transmission in wireless communication system. An apparatus for a user equipment (UE) includes a processor configured to: encode a physical random access channel (PRACH) sequence from a plurality of PRACH sequence for transmission via a PRACH to perform a random access procedure, wherein indication of support of early data transmission (EDT) that is transmitted during the random access procedure is based on at least one of the plurality of PRACH sequences, higher layer signaling, PRACH resources, PRACH formats, and a payload from the UE; and send the PRACH sequence to a radio frequency (RF) interface; and the RF interface to receive the PRACH sequence from the processor. Design of random access response (RAR) is also disclosed herein.
1. An apparatus for an access node (AN), the apparatus comprising:
a radio frequency (RF) interface configured to receive a physical random access channel (PRACH) sequence from a user equipment (UE) via a PRACH; and
a processor configured to:
decode the PRACH sequence to perform a random access procedure, and
determine an indication of support of early data transmission (EDT) that is received from the UE during the random access procedure using at least one of higher layer signaling, PRACH resources, PRACH sequences, PRACH formats, or a payload from the UE,
wherein the PRACH sequences are divided into different partitions, and one or more partitions of the PRACH sequences are configured to support the EDT.
2. The apparatus of claim 1 , wherein the EDT comprises an uplink (UL) transmission and a downlink (DL) transmission.
3. The apparatus of claim 1 , wherein the higher layer signaling comprises at least one of a system information (SI) message or dedicated higher layer signaling.
4. The apparatus of claim 1 , wherein the EDT is enabled based on coverage enhancement (CE) levels.
5. The apparatus of claim 1 , wherein the PRACH resources are divided into different partitions, and one or more partitions of the PRACH resources are configured to support the EDT.
6. The apparatus of claim 1 , wherein the partitions of the PRACH sequences are divided based on at least one of root indexes or cyclic shifts.
7. The apparatus of claim 1 , wherein the payload from the UE is received following the PRACH sequence to indicate whether the UE supports the EDT or not.
8. A method for operating an access node (AN), the method comprising:
receiving a physical random access channel (PRACH) sequence from a user equipment (UE) via a PRACH;
decoding the PRACH sequence to perform a random access procedure,
determining an indication of support of early data transmission (EDT) that is received from the UE during the random access procedure using at least one of higher layer signaling, PRACH resources, PRACH sequences, PRACH formats, or a payload from the UE,
wherein the PRACH sequences are divided into different partitions, and one or more partitions of the PRACH sequences are configured to support the EDT.
9. The method of claim 8 , wherein the EDT comprises an uplink (UL) transmission and a downlink (DL) transmission.
10. The method of claim 8 , wherein the higher layer signaling comprises at least one of a system information (SI) message or dedicated higher layer signaling.
11. The method of claim 8 , wherein the EDT is enabled based on coverage enhancement (CE) levels.
12. The method of claim 8 , wherein the PRACH resources are divided into different partitions, and one or more partitions of the PRACH resources are configured to support the EDT.
13. The method of claim 8 , wherein the partitions of the PRACH sequences are divided based on at least one of root indexes or cyclic shifts.
14. The method of claim 8 , further comprising:
receiving the payload from the UE following the PRACH sequence to indicate whether the UE supports the EDT or not.
15. One or more non-transitory computer-readable media comprising instructions to, upon execution of the instructions by one or more processors of an access node (AN), cause the AN to:
receive a physical random access channel (PRACH) sequence from a user equipment (UE) via a PRACH;
decode the PRACH sequence to perform a random access procedure, and
determine an indication of support of early data transmission (EDT) that is received from the UE during the random access procedure using at least one of higher layer signaling, PRACH resources, PRACH sequences, PRACH formats, or a payload from the UE,
wherein the PRACH sequences are divided into different partitions, and one or more partitions of the PRACH sequences are configured to support the EDT.
16. The one or more non-transitory computer-readable media of claim 15 , wherein the EDT comprises an uplink (UL) transmission and a downlink (DL) transmission.
17. The one or more non-transitory computer-readable media of claim 15 , wherein the higher layer signaling comprises at least one of a system information (SI) message or dedicated higher layer signaling.
18. The one or more non-transitory computer-readable media of claim 15 , wherein the EDT is enabled based on coverage enhancement (CE) levels.
19. The one or more non-transitory computer-readable media of claim 15 , wherein the PRACH resources are divided into different partitions, and one or more partitions of the PRACH resources are configured to support the EDT.
20. The one or more non-transitory computer-readable media of claim 15 , wherein the partitions of the PRACH sequences are divided based on at least one of root indexes or cyclic shifts.