Method for processing data associated with session management and mobility management

Patent metadata

Field	Value
Publication number	US-9414377-B2
Application number	US-201514846235-A
Country	US
Kind code	B2
Filing date	Sep 4, 2015
Priority date	Apr 29, 2011
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

A user equipment (UE) in a communication system, and a method thereof are discussed. The method according to one embodiment includes receiving a deactivate bearer context request message; if a bearer identity in the deactivate bearer context request message is that of a default bearer to a packet data network (PDN), deleting all bearer contexts associated with the PDN; if a cause code in the deactivate bearer context request message indicates that reactivation is requested, stopping a session management back-off timer associated with a previously-established data connection if the session management back-off timer is running. The session management back-off timer is a timer starting if a session management back-off time value is received. The previously-established data connection is associated with an access point name (APN). The method according to the embodiment further includes re-initiating a PDN connectivity procedure for the APN after stopping the session management back-off timer.

First claim

What is claimed is:

1. A method of processing data in a communication system, the method performed by a user equipment (UE) and comprising:
receiving a deactivate bearer context request message;
if a bearer identity in the deactivate bearer context request message is that of a default bearer to a packet data network (PDN), deleting all bearer contexts associated with the PDN;
if a cause code in the deactivate bearer context request message indicates that reactivation is requested, stopping a session management back-off timer associated with a previously-established data connection if the session management back-off timer is running, wherein the session management back-off timer is a timer starting if a session management back-off time value is received at the UE, wherein the previously-established data connection is associated with an access point name (APN); and
re-initiating a PDN connectivity procedure for the APN after stopping the session management back-off timer.

2. The method of claim 1 , wherein the cause code is set to ‘39’, which indicates the reactivation is requested.

3. The method of claim 1 , wherein the session management back-off time value is included in a bearer resource modification reject message, and the UE does not transmit an additional request for the bearer resource modification while the session management back-off timer is running.

4. The method of claim 3 , wherein the bearer resource modification reject message includes a cause code which is set to ‘26’, which indicates ‘insufficient resources’.

5. The method of claim 1 , wherein the session management back-off time value is included in a bearer resource allocation reject message, and the UE does not transmit an additional request for the bearer resource allocation while the session management back-off timer is running.

6. The method of claim 5 , wherein the bearer resource allocation reject message includes a cause code which is set to ‘26’, which indicates ‘insufficient resources’.

7. A user equipment (UE) in a communication system, the DE comprising:
a radio frequency unit; and
a processor coupled to the radio frequency unit and configured to:
receive a deactivate bearer context request message,
if a bearer identity in the deactivate bearer context request message is that of a default bearer to a packet data network (PDN), delete all bearer contexts associated with the PDN,
if a cause code in the deactivate bearer context request message indicates that reactivation is requested, stop a session management back-off timer associated with a previously-established data connection if the session management back-off timer is running, wherein the session management back-off timer is a timer starting if a session management back-off time value is received at the UE, wherein the previously-established data connection is associated with an access point name (APN), and
re-initiate a PDN connectivity procedure for the APN after stopping the session management back-off timer.

8. The UE of claim 7 , wherein the cause code is set to ‘39’, which indicates the reactivation is requested.

9. The UE of claim 7 , wherein the session management back-off time value is included in a bearer resource modification reject message, and the UE does not transmit an additional request for the bearer resource modification while the session management back-off timer is running.

10. The UE of claim 9 , wherein the bearer resource modification reject message includes a cause code which is set to ‘26’, which indicates ‘insufficient resources’.

11. The UE of claim 7 , wherein the session management back-off time value is included in a bearer resource allocation reject message, and the UE does not transmit an additional request for the bearer resource allocation while the session management back-off timer is running.

12. The UE of claim 11 , wherein the bearer resource allocation reject message includes a cause code which is set to ‘26’, which indicates ‘insufficient resources’.

Assignees

• Lg Electronics Inc

Inventors

• Sun Li-Hsiang

Classifications

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W76/38

  triggered by timers · CPC title

• H04W72/04

  Wireless resource allocation · CPC title

• H04W76/18 Primary

  Management of setup rejection or failure · CPC title

• H04W88/08

  Access point devices · CPC title