US Patent Application 17796472. METHOD AND APPARATUS FOR RECOVERY FROM FALLBACK FOR CELLULAR INTERNET OF THINGS DEVICE simplified abstract

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METHOD AND APPARATUS FOR RECOVERY FROM FALLBACK FOR CELLULAR INTERNET OF THINGS DEVICE

Organization Name

Samsung Electronics Co., Ltd.


Inventor(s)

Mahmoud Watfa of Middlesex (GB)

METHOD AND APPARATUS FOR RECOVERY FROM FALLBACK FOR CELLULAR INTERNET OF THINGS DEVICE - A simplified explanation of the abstract

This abstract first appeared for US patent application 17796472 titled 'METHOD AND APPARATUS FOR RECOVERY FROM FALLBACK FOR CELLULAR INTERNET OF THINGS DEVICE

Simplified Explanation

The patent application describes three methods for a User Equipment (UE) in 5GMM-CONNECTED mode with RRC inactive indication.

  • Method 1:

- Establish a PDU session for sending data over the control plane. - If there is data to be sent in an UL NAS TRANSPORT message, request lower layers to resume an RRC connection. - Upon receiving a fallback indication from the lower layers, enter 5GMM-IDLE mode.

  • Method 2:

- Establish a PDU session for sending data over the user plane. - If there is user data to be sent over the user plane and no pending NAS procedure, enter 5GMM-IDLE mode upon receiving a fallback indication from the lower layers.

  • Method 3:

- In response to receiving a suspend indication from the lower layer, determine the type of the suspend indication. - Enter a NAS mode according to the determined type of the suspend indication.


Original Abstract Submitted

There is disclosed a first method for a UE, wherein the UE is in 5GMM-CONNECTED mode with RRC inactive indication. The first method comprises: establishing a PDU session for sending data over the control plane; determining that there is data to be sent in an UL NAS TRANSPORT message; in response to the determining, requesting lower layers to resume an RRC connection; and upon receiving a fallback indication from the lower layers in response to the requesting, entering 5GMM-IDLE mode. Also disclosed is a second method for a UE, wherein the UE is in 5GMM-CONNECTED mode with RRC inactive indication. The second method comprises: establishing a PDU session for sending data over the user plane; determining that there is user data to be sent over the user plane; determining that there is no pending NAS procedure; and upon receiving a fallback indication from the lower layers, in response to the determining, entering 5GMM-IDLE mode. Also disclosed is a third method for a UE, wherein the UE is in 5GMM-CONNECTED mode with RRC inactive indication. The third method comprises: in response to receiving, from lower layer, a suspend indication, determining the type of the suspend indication; and entering a NAS mode according to the determined type of the suspend indication.

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