US-12621873-B2 - Random access procedure with buffer status report

Abstract

A wireless device receives one or more configuration parameters indicating a first timer used for prohibiting initiation of a random access (RA) procedure for a buffer status report (BSR). The wireless device starts the first timer based on completing a first RA procedure initiated for a first BSR and triggers a second BSR while the first timer is running. Based on the triggering the second BSR while the first timer running, the wireless device prohibits initiation of a second RA procedure for the second BSR.

Inventors

• Mohammad Ghadir Khoshkholgh Dashtaki
• Ali Cagatay Cirik
• Esmael Hejazi Dinan
• Yunjung Yi
• Hyoungsuk Jeon
• Hua Zhou

Assignees

• OFINNO, LLC

Dates

Publication Date

20260505

Application Date

20231116

Claims (20)

1. 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: receive one or more configuration parameters indicating a first timer used for prohibiting initiation of a random access (RA) procedure for a buffer status report (BSR); start the first timer based on completing a first RA procedure initiated for a first BSR; trigger a second BSR while the first timer is running; and based on the triggering the second BSR while the first timer running, prohibit initiation of a second RA procedure for the second BSR.
2. 2 . The wireless device of claim 1 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to: determine whether the first timer is running or is stopped; and initiate the first RA procedure based on the first timer being stopped.
3. 3 . The wireless device of claim 1 , wherein the completing of the first RA procedure is a successful completion of the first RA procedure or an unsuccessful completion of the first RA procedure.
4. 4 . The wireless device of claim 1 , wherein the first BSR corresponds to a first logical channel (LCH).
5. 5 . The wireless device of claim 1 , wherein: the second BSR corresponds to a second LCH; and a configuration of the second LCH excludes a scheduling request (SR) configuration.
6. 6 . The wireless device of claim 1 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to: transmit, for the first BSR, a BSR medium access control (MAC) control element (CE) via a message A (MsgA) of the first RA procedure.
7. 7 . The wireless device of claim 6 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to: prohibit initialization of the first timer: until completion of the first RA procedure for the BSR after transmitting the MsgA; after transmitting the BSR MAC CE via the MsgA of the first RA procedure; or based on a short truncated BSR MAC CE or a long truncated BSR MAC CE being transmitted via the MsgA of the first RA procedure.
8. 8 . A base station comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the base station to: transmit one or more configuration parameters, wherein the one or more configuration parameters indicate: a first timer configured for prohibiting initiation of a random access (RA) procedure for a buffer status report (BSR); initiation of the first timer based on completing a first RA procedure for a first BSR; and prohibition of a second RA procedure for a second BSR while the first timer is running.
9. 9 . The base station of claim 8 , wherein the completing of the first RA procedure is a successful completion of the first RA procedure or an unsuccessful completion of the first RA procedure.
10. 10 . The base station of claim 8 , wherein the first BSR corresponds to a first logical channel (LCH).
11. 11 . The base station of claim 8 , wherein: the second BSR corresponds to a second LCH; and a configuration of the second LCH excludes a scheduling request (SR) configuration.
12. 12 . The base station of claim 8 , wherein the instructions, when executed by the one or more processors, further cause the base station to: receive, for the first BSR, a BSR medium access control (MAC) control element (CE) via a message A (MsgA) of the first RA procedure.
13. 13 . The base station of claim 12 , wherein the one or more configuration parameters indicate prohibition of initialization of the first timer: until completion of the first RA procedure for the BSR after transmitting the MsgA; after transmitting the BSR MAC CE via the MsgA of the first RA procedure; or based on a short truncated BSR MAC CE or a long truncated BSR MAC CE being transmitted via the MsgA of the first RA procedure.
14. 14 . The base station of claim 13 , wherein the one or more configuration parameters indicate the first timer prohibiting the initiation of the second RA procedure for the second BSR based on at least one of: waiting for the first timer to be expired before the initiation of the second RA procedure for the second BSR; triggering a scheduling request (SR) for the BSR while the first timer is running; or using an available uplink shared channel resource for the BSR.
15. 15 . A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to: receive one or more configuration parameters indicating a first timer used for prohibiting initiation of a random access (RA) procedure for a buffer status report (BSR); start the first timer based on completing a first RA procedure initiated for a first BSR; trigger a second BSR while the first timer is running; and based on the triggering the second BSR while the first timer running, prohibit initiation of a second RA procedure for the second BSR.
16. 16 . The non-transitory computer-readable medium of claim 15 , wherein the instructions further cause the wireless device to: determine whether the first timer is running or is stopped; and initiate the first RA procedure based on the first timer being stopped.
17. 17 . The non-transitory computer-readable medium of claim 15 , wherein the completing of the first RA procedure is a successful completion of the first RA procedure or an unsuccessful completion of the first RA procedure.
18. 18 . The non-transitory computer-readable medium of claim 15 , wherein the first BSR corresponds to a first logical channel (LCH).
19. 19 . The non-transitory computer-readable medium of claim 15 , wherein: the second BSR corresponds to a second LCH; and a configuration of the second LCH excludes a scheduling request (SR) configuration.
20. 20 . The non-transitory computer-readable medium of claim 15 , wherein the instructions further cause the wireless device to: transmit, for the first BSR, a BSR medium access control (MAC) control element (CE) via a message A (MsgA) of the first RA procedure; and prohibit initialization of the first timer: until completion of the first RA procedure for the BSR after transmitting the MsgA; after transmitting the BSR MAC CE via the MsgA of the first RA procedure; or based on a short truncated BSR MAC CE or a long truncated BSR MAC CE being transmitted via the MsgA of the first RA procedure.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Application No. PCT/US2022/030242, filed May 20, 2022, which claims the benefit of U.S. Provisional Application No. 63/191,004, filed May 20, 2021, all of which are hereby incorporated by reference in their entireties. BRIEF DESCRIPTION OF THE DRAWINGS Examples of several of the various embodiments of the present disclosure are described herein with reference to the drawings. FIG. 1A and FIG. 1B illustrate example mobile communication networks in which embodiments of the present disclosure may be implemented. FIG. 2A and FIG. 2B respectively illustrate a New Radio (NR) user plane and control plane protocol stack. FIG. 3 illustrates an example of services provided between protocol layers of the NR user plane protocol stack of FIG. 2A. FIG. 4A illustrates an example downlink data flow through the NR user plane protocol stack of FIG. 2A. FIG. 4B illustrates an example format of a MAC subheader in a MAC PDU. FIG. 5A and FIG. 5B respectively illustrate a mapping between logical channels, transport channels, and physical channels for the downlink and uplink. FIG. 6 is an example diagram showing RRC state transitions of a UE. FIG. 7 illustrates an example configuration of an NR frame into which OFDM symbols are grouped. FIG. 8 illustrates an example configuration of a slot in the time and frequency domain for an NR carrier. FIG. 9 illustrates an example of bandwidth adaptation using three configured BWPs for an NR carrier. FIG. 10A illustrates three carrier aggregation configurations with two component carriers. FIG. 10B illustrates an example of how aggregated cells may be configured into one or more PUCCH groups. FIG. 11A illustrates an example of an SS/PBCH block structure and location. FIG. 11B illustrates an example of CSI-RSs that are mapped in the time and frequency domains. FIG. 12A and FIG. 12B respectively illustrate examples of three downlink and uplink beam management procedures. FIG. 13A, FIG. 13B, and FIG. 13C respectively illustrate a four-step contention-based random access procedure, a two-step contention-free random access procedure, and another two-step random access procedure. FIG. 14A illustrates an example of CORESET configurations fora bandwidth part. FIG. 14B illustrates an example of a CCE-to-REG mapping for DCI transmission on a CORESET and PDCCH processing. FIG. 15 illustrates an example of a wireless device in communication with a base station. FIG. 16A, FIG. 16B, FIG. 16C, and FIG. 16D illustrate example structures for uplink and downlink transmission. FIG. 17A, FIG. 17B and FIG. 17C show examples of MAC subheaders. FIG. 18A shows an example of a DL MAC PDU. FIG. 18B shows an example of an UL MAC PDU. FIG. 19 shows an example of multiple LCIDs that may be associated with the one or more MAC CEs. FIG. 20 shows an example of the one or more MAC CEs. FIG. 21 shows examples of DCI formats. FIG. 22 shows an example of a 2-step RA procedure performed between a wireless device and a base station. FIG. 23A and FIG. 23B are example diagrams illustrating 2-step RA procedures performed between a wireless device and a base station. FIG. 24A is an example non-terrestrial network architecture with transparent satellite as an aspect of an embodiment of the present disclosure. FIG. 24B is an example non-terrestrial network architecture with regenerative satellite as an aspect of an embodiment of the present disclosure. FIG. 25 is an example figure of different types of non-terrestrial network platforms. FIG. 26 examples of propagation delay corresponding to NTNs of different altitudes. FIG. 27A shows an example of a cell/beam and reference point in a non-terrestrial network architecture with transparent satellite. FIG. 27B shows an example of a cell/beam in a non-terrestrial network architecture with transparent satellite when the reference point is the satellite. FIG. 28 shows an example of UL-DL timing relationship in a non-terrestrial network with transparent satellite. FIG. 29 shows an example of UL-DL timing relationship in a non-terrestrial network with transparent satellite. FIG. 30 is an example diagram illustrating a 2-step RA procedure performed between a wireless device and an NTN base station. FIG. 31 shows an example of RA based BSR procedure in an NTN network, in accordance with certain aspects of the present disclosure. FIG. 32 shows an example of RA based BSR procedure in an NTN network, in accordance with certain aspects of the present disclosure. FIG. 33 shows an example of RA based BSR procedure in an NTN network, in accordance with certain aspects of the present disclosure. FIG. 34 shows an example of RA based BSR procedure in an NTN network, in accordance with certain aspects of the present disclosure. FIG. 35 shows an example of a 2-step RA procedure for BSR in an NTN network, in accordance with certain aspects of the present disclosure. FIG. 36 shows an example of a 2-step RA procedure fo