Access control of user equipments for inactive direct transmissions

Patent metadata

Field	Value
Publication number	US-12439471-B2
Application number	US-202017441803-A
Country	US
Kind code	B2
Filing date	Aug 6, 2020
Priority date	Aug 6, 2020
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

A user equipment (UE) associated with a wireless communication system is disclosed. The UE comprises one or more processors configured to process a service configuration signal received from a base station associated therewith. In some aspects, 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. The one or more processors is further configured to determine the one or more service configurations associated with the data transmission that are allowed to be transmitted by the UE during the INACTIVE state of the UE, based on processing the service configuration signal.

First claim

What is claimed is:

1. A baseband (BB) processor for a user equipment (UE) configured to, when executing instructions stored in a memory, perform operations comprising:
providing, to a radio frequency (RF) interface during an INACTIVE state of the UE, a direct transmission signal including one or more access control parameters associated with an uplink (UL) data transmission, wherein the one or more access control parameters include a Resume Cause;
in response to providing the direct transmission signal, monitoring for an access control (AC) feedback signal during a predefined feedback time window;
in response to not receiving the AC feedback signal during the predefined feedback time window, initiating a legacy resume procedure to transition the UE from the INACTIVE state to a CONNECTED state to perform one or more subsequent UL data transmissions;
in response to receiving the AC feedback signal during the predefined feedback time window, remaining in the INACTIVE state to perform the one or more subsequent UL data transmissions; and
providing the one or more subsequent UL data transmissions to the RF interface for transmission during the INACTIVE state of the UE or the CONNECTED state of the UE, based on whether the AC feedback signal was received during the predefined feedback time window.

2. The BB processor of claim 1 , 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).

3. The BB processor of claim 1 , wherein the operations further comprise:
processing a delay indication signal comprising a delay timer value;
starting a delay timer with the delay time value; and
before the delay timer expires, stopping a subsequent direct transmission during the INACTIVE state of the UE.

4. The BB processor of claim 1 , wherein the operations further comprise:
processing a radio resource control (RRC) resume/setup signal to transition the UE from the INACTIVE state to a CONNECTED state; and
perform one or more subsequent data transmissions during the CONNECTED state.

5. The BB processor of claim 1 , wherein the operations further comprise:
processing a service configuration signal, prior to providing the direct transmission signal, 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, wherein the direct transmission signal is provided based on the service configuration signal.

6. The BB processor of claim 5 , wherein the indication of the one or more service types includes an indication of one or more dedicated radio bearers (DRBs).

7. The BB processor of claim 1 , wherein the direct transmission signal and the UL data transmission are included in a same transmission.

8. A baseband (BB) processor for a user equipment (UE) configured to, when executing instructions stored in a memory, perform operations comprising:
processing a service configuration signal including an indication of one or more service types for which data is allowed to be transmitted by the UE during an INACTIVE state of the UE;
in response to a determination that a service type for uplink (UL) data is included in the one or more service types for which data is allowed to be transmitted by the UE during the INACTIVE state, providing the UL data to a radio frequency (RF) interface for transmission during the INACTIVE state;
monitoring for one or more indicator signals to determine whether transmission of the UL data was successful based on whether or not the one or more indicator signals were received;
in response to a determination that the transmission of the UL data was unsuccessful, starting a backoff timer with a backoff time value; and
delaying a retransmission of the UL data until the backoff timer expires; and
providing the UL data to the RF interface for retransmission during the INACTIVE state after the backoff timer expires.

9. The BB processor of claim 8 , wherein the UL data is transmitted via a random access channel (RACH) procedure, and wherein the operations further comprise determining the backoff time value based on backoff indicator within a random access response (RAR) associated with the RACH and a special backoff parameter.

10. The BB processor of claim 9 , wherein the special backoff parameter is configured per dedicated radio bearer (DRB), per ResumeCause, or per priority and per access.

11. The BB processor of claim 9 , wherein the operations further comprise determining that the transmission of the UL data is not successful, based on the backoff indicator.

12. The BB processor of claim 8 , wherein the UL data is transmitted using a preconfigured grant, and wherein the transmission of the UL data is determined to be not successful based on an ACK feedback signal not being received during a predefined feedback window.

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

• H04W74/0836

  with 2-step access · CPC title

• H04W74/0838

  using contention-free random access [CFRA] · CPC title

• H04W74/0833

  Random access procedures, e.g. with 4-step access · CPC title

• H04W48/06

  based on traffic conditions · CPC title

• Y02D30/70

  in wireless communication networks · CPC title