Granted Patent B2

US 12,426,098 · App. 18/010,897 · Granted Sep 23, 2025

Inventors: Andreas Höglund (Solna, SE); Olof Liberg (Enskede, SE)

Assignee: Telefonaktiebolaget LM Ericsson (publ)

H04W74/0841H04L1/1812H04W56/0045H04W72/1268

Abstract

Claims (70)

1. A method performed by a wireless device, the method being for handling uplink communication to a network node, the wireless device and the network node operating in a wireless communications network, and the method comprising:

obtaining a first configuration of a set of periodic uplink time-frequency resources for uplink communication to the network node, wherein the first configuration is specific for the wireless device, and wherein the first configuration configures the set of periodic uplink time-frequency resources to support at least one of:

a first procedure comprising a first Physical Uplink Shared Channel (PUSCH) transmission of a Message A (MsgA) transmission;

a second procedure comprising uplink transmissions of, or corresponding to, a two-step Random Access Channel (RACH) procedure comprising a first Physical Random Access Channel (PRACH) transmission and a second PUSCH transmission; or

a third procedure comprising uplink transmissions of, or corresponding to, a four-step RACH procedure comprising a second PRACH transmission and a third PUSCH transmission; and

wherein a Timing Advance (TA) value of at least one of the first PUSCH transmission, the second PUSCH transmission, the third PUSCH transmission, the first PRACH transmission and the second PRACH transmission is at least one of:

configurable by the network node or another network node, independently between the PUSCH and the PRACH transmissions;

configured to be zero, wherein the wireless device is configured to refrain from validating the TA value; or

explicitly configured and validated before transmission from the inactive or idle state.

2. The method according to claim 1 , wherein the set of periodic uplink time-frequency resources for uplink communication are in one or more PUSCH uplink grants.

3. The method according to claim 1 , wherein a size of a buffer for the uplink communication of the wireless device is smaller than a threshold.

4. The method according to claim 1 , wherein the first configuration further configures the wireless device with at least one of:

a longer cyclic prefix than a currently used cyclic prefix by the wireless device, wherein the longer prefix is one of: specific for the wireless device, and non-specific for the wireless device,

a guard time, wherein the guard time is one of: specific for the wireless device, and non-specific for the wireless device, and

a guard band, wherein the guard band is one of: specific for the wireless device, and non-specific for the wireless device.

5. The method according to claim 1 , wherein the first configuration further configures the wireless device to refrain from performing additional link adaptations after having performed a first link adaptation during initial connection with the network node.

6. The method according to claim 1 , wherein the TA value is configured to be zero, and wherein the method further comprises refraining from validating the configured TA value equal to zero before data transmission.

7. The method according to claim 1 , wherein the TA value is configured to be zero, and wherein the method further comprises determining a validity of the configured TA equal to zero before data transmission.

8. The method according to claim 6 , wherein whether the wireless device performs the refraining or the determining is configurable.

9. The method according to claim 1 , wherein the method further comprises updating the configured TA based on at least one of: an occurrence of a Hybrid Automatic Retransmission request (HARQ) retransmission; or a movement of the wireless device to a connected mode.

10. The method according to claim 1 , wherein the method further comprises obtaining a second configuration, the second configuration configuring the wireless device to adjust the configured TA value, or another configured TA value in the absence of feedback from the network node.

11. A method performed by a network node, the method being for handling uplink communication by a wireless device, the network node and the wireless device operating in a wireless communications network, the method comprising:

providing, to the wireless device, a first configuration of a set of periodic uplink time-frequency resources for uplink communication by the wireless device, wherein the first configuration is specific for the wireless device, and wherein the first configuration configures the set of periodic uplink time-frequency resources to support at least one of:

a first procedure comprising a first Physical Uplink Shared Channel (PUSCH) transmission of a Message A (MsgA) transmission;

a second procedure comprising uplink transmissions of, or corresponding to, a two-step Random Access Channel (RACH) procedure comprising a first PRACH transmission and a second PUSCH transmission; or

a third procedure comprising uplink transmissions of, or corresponding to, a four-step RACH procedure comprising a second PRACH transmission and a third PUSCH transmission; and

wherein a Timing Advance (TA) value of at least one of the first PUSCH transmission, the second PUSCH transmission, the third PUSCH transmission, the first PRACH transmission and the second PRACH transmission is at least one of:

configurable by the network node or another network node, independently between the PUSCH and the PRACH transmissions;

configured to be zero, wherein the wireless device is configured to refrain from validating the TA value; or

explicitly configured and validated before transmission from the inactive or idle state.

12. The method according to claim 11 , wherein the set of periodic uplink time-frequency resources for uplink communication are in one or more PUSCH uplink grants.

13. The method according to claim 11 , wherein a size of a buffer for the uplink communication of the wireless device is smaller than a threshold.

14. The method according to claim 11 , wherein the first configuration further configures the wireless device with at least one of:

a longer cyclic prefix than a currently used cyclic prefix by the wireless device, wherein the longer prefix is one of: specific for the wireless device, and non-specific for the wireless device;

a guard time, wherein the guard time is specific for the wireless device or non-specific for the wireless device; or

a guard band, wherein the guard band is specific for the wireless device or non-specific for the wireless device.

15. The method according to claim 11 , wherein the first configuration further configures the wireless device to refrain from performing additional link adaptations after having performed a first link adaptation during initial connection with the network node.

16. The method according to claim 11 , wherein the TA value is configured to be zero, and wherein the first configuration further configures the wireless device to refrain from validating the configured TA value equal to zero before data transmission.

17. The method according to claim 11 , wherein the TA value is configured to be zero, and wherein the first configuration further configures the wireless device to determine a validity of the configured TA equal to zero before data transmission.

18. The method according to claim 16 , wherein whether the wireless device performs the refraining from validating the configured TA value equal to zero before data transmission or the determining of the validity of the configured TA equal to zero before data transmission is configurable.

19. The method according to claim 11 , wherein the first configuration further configures the wireless device to update the configured TA based on at least one of:

an occurrence of a Hybrid Automatic Retransmission request (HARQ) retransmission; or

a movement of the wireless device to a connected mode.

20. The method according to claim 11 , wherein the method further comprises providing a second configuration to the wireless device, the second configuration configuring the wireless device to adjust the configured TA value, or another configured TA value in the absence of feedback from the network node.

21. A wireless device, for handling uplink communication to a network node, the wireless device and the network node being configured to operate in a wireless communications network, the wireless device comprising:

radio circuitry; and

processing circuitry configured to:

obtain a first configuration of a set of periodic uplink time-frequency resources for uplink communication to the network node via the radio circuitry, wherein the first configuration is configured to be specific for the wireless device, and wherein the first configuration is configured to configure the set of periodic uplink time-frequency resources to support at least one of:

a first procedure comprising a first Physical Uplink Shared Channel (PUSCH) transmission of a Message A (MsgA) transmission;

a second procedure comprising uplink transmissions of, or corresponding to, a two-step Random Access Channel (RACH) procedure comprising a first Physical Random Access Channel (PRACH) transmission and a second PUSCH transmission; or

a third procedure comprising uplink transmissions of, or corresponding to, a four-step RACH procedure comprising a second PRACH transmission, and a third PUSCH transmission; and

wherein a Timing Advance (TA) value of at least one of the first PUSCH transmission, the second PUSCH transmission, the third PUSCH transmission, the first PRACH transmission and the second PRACH transmission is at least one of:

configured to be configurable by the network node or another network node, independently between the PUSCH and the PRACH transmissions;

configured to be zero, wherein the wireless device is configured to refrain from validating the TA value; or

explicitly configured and validated before transmission from the inactive or idle state.

22. The wireless device according to claim 21 , wherein the set of periodic uplink time-frequency resources for uplink communication are configured to be in one or more PUSCH uplink grants.

23. The wireless device according to claim 21 , wherein a size of a buffer for the uplink communication of the wireless device is configured to be smaller than a threshold.

24. A network node, for handling uplink communication by a wireless device, the network node and the wireless device being configured to operate in a wireless communications network, the network node comprising:

radio circuitry; and

processing circuitry configured to:

provide, to the wireless device, a first configuration of a set of periodic uplink time-frequency resources for uplink communication by the wireless device, wherein the first configuration is configured to be specific for the wireless device, and wherein the first configuration is configured to configure the set of periodic uplink time-frequency resources to support at least one of:

a first procedure comprising a first Physical Uplink Shared Channel (PUSCH) transmission of a Message A (MsgA) transmission;

a second procedure comprising uplink transmissions of, or corresponding to, a two-step Random Access Channel (RACH) procedure comprising a first Physical Random Access Channel (PRACH) transmission and a second PUSCH transmission; or

a third procedure comprising uplink transmissions of, or corresponding to, a four-step RACH procedure comprising a second PRACH transmission and a third PUSCH transmission; and

wherein a Timing Advance, TA, value of at least one of the first PUSCH transmission, the second PUSCH transmission, the third PUSCH transmission, the first PRACH transmission and the second PRACH transmission is configured to be at least one of:

configured to be configurable by the network node or another network node, independently between the PUSCH and the PRACH transmissions;

configured to be zero, wherein the wireless device is configured to refrain from validating the TA value; or

explicitly configured and validated before transmission from the inactive or idle state.

25. The network node according to claim 24 , wherein the set of periodic uplink time-frequency resources for uplink communication are configured to be in one or more PUSCH uplink grants.

26. The network node according to claim 24 , wherein a size of a buffer for the uplink communication of the wireless device is configured to be smaller than a threshold.

Assignments (1)

Continuity (2)

References Cited (12)