Base station access control techniques for inactive direct transmission

Patent metadata

Field	Value
Publication number	US-12302219-B2
Application number	US-202017441816-A
Country	US
Kind code	B2
Filing date	Aug 6, 2020
Priority date	Aug 6, 2020
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

A base station associated with a wireless communication system is disclosed. The base station comprises one or more processors configured to generate a service configuration signal to be provided to a user equipment (UE) associated therewith. In some embodiments, the service configuration signal comprises an indication of one or more service configurations associated with a data transmission that are allowed to be transmitted by the UE during an INACTIVE state of the UE. In some embodiments, the one or more processors is further configured to provide the service configuration signal to the UE.

First claim

What is claimed is:

1. A baseband (BB) processor for a base station configured to, when executing instructions stored in a memory, perform operations comprising:
providing, to a radio frequency (RF) interface for transmission to a user equipment (UE), a service configuration signal including an indication of whether radio resource control (RRC)/non-access stratum (NAS) signaling is allowed to be transmitted by the UE during an INACTIVE state of the UE;
receiving a direct transmission signal from the UE during the INACTIVE state of the UE, wherein the direct transmission signal comprises one or more access control parameters including a Resume Cause;
controlling subsequent direct transmissions from the UE during the INACTIVE state of the UE based on the one or more access control parameters; and
receiving an uplink (UL) transmission as one of the subsequent direct transmissions from the UE during the INACTIVE state of the UE, wherein the UL transmission comprises the RRC/NAS signaling indicated in the service configuration signal.

2. The BB processor of claim 1 , wherein the service configuration signal further includes an indication of one or more data radio bearers (DRBs) for which data is allowed to be transmitted by the UE during the INACTIVE state of the UE.

3. The BB processor of claim 1 , wherein the UL transmission is received from the UE during the INACTIVE state as part of a random access channel (RACH) procedure.

4. The BB processor of claim 1 , wherein the UL transmission is received from the UE during the INACTIVE state on preconfigured physical uplink shared channel (PUSCH) resources.

5. The BB processor of claim 4 , wherein the preconfigured PUSCH resources include type 1 configured grant resources.

6. The BB processor of claim 1 , wherein the service configuration signal comprises a dedicated signal to the UE.

7. A baseband (BB) processor for a base station configured to, when executing instructions stored in a memory, perform operations comprising:
receiving a direct transmission signal from a user equipment (UE) during an INACTIVE state of the UE, wherein the direct transmission signal comprises one or more access control parameters including a Resume Cause; and
controlling subsequent direct transmissions from the UE during the INACTIVE state of the UE based on the one or more access control parameters.

8. The BB processor of claim 7 , wherein the one or more access control parameters are included in an access control (AC) medium access control (MAC) control element (CE) within a MAC protocol data unit (PDU).

9. The BB processor of claim 7 , wherein the one or more access control parameters further include a priority level.

10. The BB processor of claim 7 , wherein the operations further comprise:
not providing an access control (AC) feedback signal to the UE during a predefined AC feedback time window, based on the one or more access control parameters, in order to reject subsequent data transmissions from the UE during the INACTIVE state of the UE.

11. The BB processor of claim 7 , wherein the operations further comprise:
providing, to a radio frequency (RF) interface for transmission to the UE, a delay indication signal comprising a delay timer value, based on the one or more access control parameters;
wherein the delay indication signal indicates to the UE to delay a subsequent direct transmission to the base station during the INACTIVE state of the UE by the delay timer value.

12. The BB processor of claim 7 , wherein the operations further comprise:
providing, to a radio frequency (RF) interface for transmission to the UE, a fallback indication signal, based on the one or more access control parameters;
wherein the fallback indication signal indicates to the UE to fallback to a legacy resume procedure in order to transmit a subsequent direct transmission to the base station.

13. The BB processor of claim 7 , wherein the operations further comprise:
providing, to a radio frequency (RF) interface for transmission to the UE, a radio resource control (RRC) resume/setup signal to transition the UE from the INACTIVE state to a CONNECTED state, based on the one or more access control parameters.

14. The BB processor of claim 7 , wherein the operations further comprise:
providing, prior to receiving the direct transmission signal from the UE, a service configuration signal to a radio frequency (RF) interface for transmission to the UE;
wherein the service configuration signal comprises an indication of one or more types of services for which data is allowed to be transmitted by the UE during the INACTIVE state of the UE.

15. The BB processor of claim 7 , wherein controlling the subsequent direct transmissions from the UE during the INACTIVE state of the UE includes allowing or rejecting the subsequent direct transmissions based on the one or more access control parameters.

16. A baseband (BB) processor for a base station configured to, when executing instructions stored in a memory, perform operations comprising:
receiving one or more direct transmissions associated with a direct transmission signal from a user equipment (UE) during an INACTIVE state of the UE,
determining to not allow a subsequent direct transmission from the UE during the INACTIVE state of the UE, based on network conditions; and
providing, to a radio frequency (RF) interface for transmission to the UE, a stop indication signal, in response to the determination to not allow the subsequent direct transmission from the UE during the INACTIVE state of the UE, wherein the stop indication signal indicates the UE to start a stop timer having an associated stop time value during which any direct transmission from the UE in the INACTIVE state to the base station is to be stopped.

17. The BB processor of claim 16 , wherein the operations further comprise:
in response to a first transmission of the direct transmission signal not being successfully received at the base station, providing an indication to the UE that the first transmission was not successful.

18. The BB processor of claim 17 , wherein, when the first transmission is performed via a random access channel (RACH), and wherein the operations further comprise:
providing the indication to the UE that the first transmission was not successful, based on a backoff indicator (BI) within a random access response (RAR) message associated therewith.

19. The BB processor of claim 16 , wherein a first transmission of the direct transmission signal comprises a first medium access control (MAC) protocol data unit (PDU) including one or more access control parameters associated with the direct transmission signal.

20. The BB processor of claim 16 , wherein the operations further comprise:
providing, to a radio frequency (RF) interface for transmission to the UE, a service configuration signal, prior to receiving the one or more direct transmissions associated with the direct transmission signal from the UE, wherein the service configuration signal includes an indication of one or more types of services for which data is allowed to be transmitted by the UE during the INACTIVE state of the UE.

Assignees

• Apple Inc

Inventors

• Xu Fangli
• Yao Chunhai
• Zhang Dawei
• Hu Haijing
• Xing Longda
• Shikari Murtaza A
• Vangala Sarma V
• Nimmala Srinivasan
• Zeng Wei

Classifications

• H04W76/27 Primary

  Transitions between radio resource control [RRC] states · CPC title

• Y02D30/70

  in wireless communication networks · CPC title

• H04W76/19

  Connection re-establishment · CPC title

• H04W48/06 Primary

  based on traffic conditions · CPC title