UE INITIATED EVOLVED PACKET CORE (EPC) AND IP MULTIMEDIA SUBSYSTEM (IMS) NETWORK USAGE OPTIMIZATION ALGORITHM FOR LTE CAPABLE SMARTPHONES CONNECTED TO WIRELESS LAN (WI-FI) NETWORK

• US 20160088677A1
• Filed: 09/23/2014
• Published: 03/24/2016
• Est. Priority Date: 09/23/2014
• Status: Abandoned Application

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Sridharan, Srinivasan
• Application Number:
  US14/493,995
• Publication Number:
  US 20160088677A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 2012/6459 Multiplexing, e.g. TDMA, CDMA
• CPC Class Codes: H04W 36/305 Handover due to radio link failure control signalling for hand-off failure H04W36/0079
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

According to some embodiments, a wireless device determines that Wi-Fi is on and that the wireless device is not in a voice over LTE (volte) call or a video call with an LTE node. In response to the determination, the wireless device starts a Wi-Fi ping session via a Wi-Fi node. If the Wi-Fi ping session is successful and no packet loss is observed, the wireless device detaches from the LTE node, disables LTE on the wireless device, and attaches to a legacy node.

Claims

1. A method in a wireless device for detaching from a long term evolution node (LTE) node, comprising:

determining that Wi-Fi is on and that the wireless device is not in a voice over LTE (volte) call or a video call with the LTE node;

starting a Wi-Fi ping session via a Wi-Fi node;

if the Wi-Fi ping session is successful and no packet loss is observed;

detaching from the LTE node;

disabling LTE on the wireless device;

attaching to a legacy node; and

maintaining the Wi-Fi ping session until the Wi-Fi is disconnected or packet loss is observed on the Wi-Fi ping session.

2. The method of claim 1, further comprising receiving voice services from the legacy node and receiving packet data services from the Wi-Fi node while the wireless device is attached to the legacy node.

3. The method of claim 1, further comprising:

determining that Wi-Fi has been disconnected and, in response;

detaching from the legacy node;

enabling LTE on the wireless device; and

attaching to the LTE node.

4. The method of claim 1, further comprising:

detecting packet loss on the Wi-Fi connection and, in response;

detaching from the legacy node;

enabling LTE on the wireless device; and

attaching to the LTE node.

5. The method of claim 1, wherein:

the legacy node uses one of the following radio access technologies;

code division multiple access (CDMA), wideband CDMA (WCDMA), or global system for mobile communications (GSM); and

the method determines the legacy node using one or more of frequency assignment, preferred roaming list (PRL), or public land mobile network (PLMN) information indicated by a subscriber identity module (SIM) of the wireless device.

6. The method of claim 1, further comprising stopping the Wi-Fi ping session if the Wi-Fi is disconnected or if packet loss is observed on the Wi-Fi ping session.

7. A wireless device, operable to:

determine that Wi-Fi is on and that the wireless device is not in a voice over LTE (volte) call or a video call with a long term evolution (LTE) node;

start a Wi-Fi ping session via a Wi-Fi node;

if the Wi-Fi ping session is successful and no packet loss is observed;

detach from the LTE node;

disable LTE on the wireless device;

attach to a legacy node; and

maintain the Wi-Fi ping session until the Wi-Fi is disconnected or packet loss is observed on the Wi-Fi ping session.

8. The wireless device of claim 7, further operable to receive voice services from the legacy node and receiving packet data services from the Wi-Fi node while the wireless device is attached to the legacy node.

9. The wireless device of claim 7, further operable to:

determine that Wi-Fi has been disconnected and, in response;

detach from the legacy node;

enable LTE on the wireless device; and

attach to the LTE node.

10. The wireless device of claim 7, further operable to:

detect packet loss on the Wi-Fi connection and, in response;

detach from the legacy node;

enable LTE on the wireless device; and

attach to the LTE node.

11. The wireless device of claim 7, wherein:

the legacy node uses one of the following radio access technologies;

code division multiple access (CDMA), wideband CDMA (WCDMA), or global system for mobile communications (GSM); and

the wireless device determines the legacy node using one or more of frequency assignment, preferred roaming list (PRL), or public land mobile network (PLMN) information indicated by a subscriber identity module (SIM) of the wireless device.

12. The wireless device of claim 7, further operable to stop the Wi-Fi ping session if the Wi-Fi is disconnected or if packet loss is observed on the Wi-Fi ping session.

13. A non-transitory computer readable medium comprising logic, the logic, when executed by a processor, operable to:

determine that Wi-Fi is on and that a wireless device is not in a voice over LTE (volte) call or a video call with a long term evolution (LTE) node;

start a Wi-Fi ping session via a Wi-Fi node;

if the Wi-Fi ping session is successful and no packet loss is observed;

detach from the LTE node;

disable LTE on the wireless device;

attach to a legacy node; and

maintain the Wi-Fi ping session until the Wi-Fi is disconnected or packet loss is observed on the Wi-Fi ping session.

14. The non-transitory computer readable medium of claim 13, the logic further operable to receive voice services from the legacy node and receive packet data services from the Wi-Fi node while the wireless device is attached to the legacy node.

15. The non-transitory computer readable medium of claim 13, the logic further operable to:

determine that Wi-Fi has been disconnected and, in response;

detach from the legacy node;

enable LTE on the wireless device; and

attach to the LTE node.

16. The non-transitory computer readable medium of claim 13, the logic further operable to:

detect packet loss on the Wi-Fi connection and, in response;

detach from the legacy node;

enable LTE on the wireless device; and

attach to the LTE node.

17. The non-transitory computer readable medium of claim 13, wherein:

the legacy node uses one of the following radio access technologies;

code division multiple access (CDMA), wideband CDMA (WCDMA), or global system for mobile communications (GSM); and

the logic determines the legacy node using one or more of frequency assignment, preferred roaming list (PRL), or public land mobile network (PLMN) information indicated by a subscriber identity module (SIM) of the wireless device.

18. The non-transitory computer readable medium of claim 13, the logic further operable to stop the Wi-Fi ping session if the Wi-Fi is disconnected or if packet loss is observed on the Wi-Fi ping session.