IP Library › Granted Patent US 10,834,570

Granted Patent B2

US 10,834,570 · App. 16/077,388 · Granted Nov 10, 2020

Service request transmission and user equipment, and service request reception and base station

Inventors: Taehun Kim (Seoul, KR); Jaehyun Kim (Seoul, KR); Sangmin Park (Seoul, KR); Daewook Byun (Seoul, KR)

Assignee: LG ELECTRONICS INC.

H04W8/08 H04W36/0022 H04W76/10 H04W76/11 H04W76/12 H04W76/18 H04W76/27 H04W76/30 H04L67/12 H04W4/70

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Quick Facts

Patent No.: US 10,834,570
App. No.: 16/077,388
Granted: Nov 10, 2020
Kind: B2

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USPTO Patent Center↗ Full Patent PDF↗

Abstract

A user equipment can send an EPS mobility management (EMM) message including uplink data to a network node. The user equipment can determine that an EMM process complying with the EMM message has successfully been completed or can treat an EMM process complying with the EMM message as having been successfully completed if the user equipment receives an RRC disconnection, downlink data or service acceptance message for the EMM message.

Claims (59)

1. A method for transmitting a service request by a user equipment (UE) comprising an access stratum (AS) layer and a non-access stratum (NAS) layer in a wireless communication system, the method comprising:

transmitting, by the NAS layer, a SERVICE REQUEST message,

wherein based on that the UE is configured to use control plane cellular internet of things (CIoT) optimization, the SERVICE REQUEST message comprises uplink user data to be transmitted via a control plane; and

determining, by the NAS layer of the UE, that a service request procedure related to the SERVICE REQUEST message is successfully completed, based on that the NAS layer of the UE obtains, from the AS layer, an indication regarding a radio resource control (RRC) connection release after the transmission of the SERVICE REQUEST message,

wherein the SERVICE REQUEST message is a non-access stratum (NAS) message.

2. The method of claim 1 , further comprising:

determining, by the NAS layer of the UE, that the service request procedure related to the SERVICE REQUEST message is successfully completed, based on that (ii) downlink data is received after the transmission of the SERVICE REQUEST message, and

determining, by the NAS layer of the UE, that the service request procedure related to the SERVICE REQUEST message is successfully completed, based on that (iii) SERVICE ACCEPT message is received after the transmission of the SERVICE REQUEST message.

3. The method of claim 2 ,

wherein the downlink data is received via the control plane.

4. The method of claim 1 , further comprising:

starting a specific timer at the same time as the transmission of the SERVICE REQUEST message is started,

wherein it is determined that the service request procedure related to the SERVICE REQUEST message is successfully completed based on that the at least one of predetermined conditions is met before expiration of the specific timer.

5. The method of claim 1 , wherein the indication regarding the RRC connection release being obtained from a lower layer.

6. The method of claim 1 , wherein a RRC connection between the UE and a base station is released in response to the indication regarding the RRC connection release.

7. A method for by a network node in a wireless communication system, the method comprising:

receiving, from a user equipment (UE) which includes an access stratum (AS) layer and a non-access stratum (NAS) layer, a SERVICE REQUEST message,

performing a service request procedure related to the SERVICE REQUEST message wherein the service request procedure is successfully completed in association with a radio resource control (RRC) connection release after the reception of the service request message,

wherein the SERVICE REQUEST message is a non-access stratum (NAS) message.

8. The method of claim 7 ,

wherein the service request procedure is successfully completed in association with (ii) transmitting, to the UE, downlink data after the reception of the service request message, and

wherein the service request procedure is successfully completed in association with (iii) transmitting, to the UE, a SERVICE ACCEPT message after the reception of the service request message.

9. The method of claim 8 ,

wherein the downlink data is transmitted via the control plane.

10. The method of claim 5 ,

wherein the network node is a mobility management entity (MME).

11. A user equipment (UE) in a wireless communication system, the UE comprising:

a memory, and

at least one processor operating an access stratum (AS) layer and a non-access stratum (NAS) layer and coupled with the memory,

wherein the at least one processor is configured to:

operate the NAS layer to transmit a SERVICE REQUEST message

operate the NAS layer to determine that a service request procedure related to the SERVICE REQUEST message is successfully completed, based on that the NAS layer of the UE obtains, from the AS layer, an indication regarding a radio resource control (RRC) connection release after the transmission of the SERVICE REQUEST message,

wherein the SERVICE REQUEST message is a non-access stratum (NAS) message.

12. The UE of claim 11 ,

wherein the processor is further configured to:

operate the NAS layer to determine that the service request procedure related to the SERVICE REQUEST message is successfully completed, based on that (ii) downlink data is received after the transmission of the service request message, and

operate the NAS layer to determine that the service request procedure related to the SERVICE REQUEST message is successfully completed, based on that (iii) a SERVICE ACCEPT message is received after the transmission of the service request message.

13. The UE of claim 12 ,

wherein the downlink data is received via the control plane.

14. The UE of claim 11 ,

wherein the processor is further configured to start a specific timer at the same time as the transmission of the SERVICE REQUEST message is started,

15. A network node in a wireless communication system, the network node comprising:

a memory, and

at least one processor coupled with the memory,

wherein the at least one processor is configured to:

receive, from a user equipment (UE) which includes an access stratum (AS) layer and a non-access stratum (NAS) layer, a SERVICE REQUEST message,

perform a service request procedure related to the SERVICE REQUEST message wherein the service request procedure is successfully completed in association with a radio resource control (RRC) connection release after the reception of the service request message,

wherein the SERVICE REQUEST message is a non-access stratum (NAS) message.

16. The network node of claim 15 ,

wherein the service request procedure is successfully completed in association with (ii) transmitting, to the UE, downlink data after the reception of the service request message, and

wherein the service request procedure is successfully completed in association with (iii) transmitting, to the UE, a SERVICE ACCEPT message after the reception of the service request message.

17. The network node of claim 16 ,

wherein the downlink data is transmitted via the control plane.

18. The network node of claim 15 ,

wherein the network node is a mobility management entity (MME).

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 10, 2018

From: KIM, TAEHUN; KIM, JAEHYUN; PARK, SANGMIN; BYUN, DAEWOOK

To: LG ELECTRONICS INC.

Reel/Frame 046618/0627 →

Continuity (5)

Provisional Application 62321693 · Apr 12, 2016

Provisional Application 62300083 · Feb 26, 2016

Provisional Application 62299010 · Feb 24, 2016

Provisional Application 62297772 · Feb 19, 2016

Related Publication 20190053034A1 · Feb 14, 2019