Method And System for Radio Access Technology Selection

• US 20110319072A1
• Filed: 06/28/2011
• Published: 12/29/2011
• Est. Priority Date: 06/28/2010
• Status: Active Grant

• Current Assignee: Blackberry Limited
• Original Assignee: Research In Motion Limited (Blackberry Limited)
• Inventors: Ekici, Ozgur, Prodanos, Dimitrios, ISLAM, Muhammad Khaledul
• Granted Patent: US 8,391,918 B2
• Time in Patent Office: Days
• US Class Current: 455/426.1
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• 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

A method and a multi-mode mobile communication device operating said method are provided. The method comprises a multi-mode mobile communication device selecting a first data connection carried over a first radio access technology (RAT) based on a first requested QoS, and the multi-mode mobile communication device selecting a second data connection over a second RAT based on a second requested QoS. The multi-mode communication device comprises a first transceiver adapted to be connected to a server using the first RAT, a second transceiver adapted to be connected to the server using the second RAT, and a processor for carrying out the method.

Claims

1. A method comprising:

a multi-mode mobile communication device selecting a first data connection carried over a first radio access technology (RAT) based on a first requested QoS; and

the multi-mode mobile communication device selecting a second data connection over a second RAT based on a second requested QoS.

2. The method according to claim 1, further comprising:

receiving a notification of a data transmission with the second requested QoS destined for the multi-mode mobile communication device through the first data connection over the first RAT; and

switching from the first data connection over the first RAT to the second data connection over the second RAT.

3. The method according to claim 2, further comprising:

upon receiving the notification, establishing a first data call on the first RAT and commencing the data transmission through the first data connection over the first RAT; and

establishing a second data call on the second RAT and activating the second data connection over the second RAT; and

switching the data transmission from the first data connection over the first RAT to the second data connection over the second RAT; and

receiving the data transmission with the second requested QoS through the second data connection over the second RAT.

4. The method according to claim 2, further comprising:

returning to the first data connection after a termination of the data transmission with the second requested QoS; and

awaiting notification of new data transmission destined for the multi-mode mobile communication device through the first data connection over the first RAT.

5. The method according to claim 1, further comprising:

configuring a server of data transmission destined for the multi-mode mobile communication device to use the first data connection while there is no data to be transmitted, and the second data connection while there is data is to be transmitted with the second requested QoS.

6. The method according to claim 1, wherein the first RAT is a cellular radio access technology, and the second RAT is a wireless local area network radio access technology.

7. The method according to claim 1, wherein the first RAT is a wireless local area network radio access technology, and the second RAT is a cellular radio access technology.

8. The method according to claim 1, wherein the first RAT is a first cellular radio access technology, and the second RAT is a second cellular radio access technology.

9. The method according to claim 1, wherein the first RAT is a first wireless local area network radio access technology, and the second RAT is a second wireless local area network radio access technology.

10. A method by a multi-mode mobile communication device comprising:

selecting a first data connection based on a first criteria while there is no data to be transmitted, said first data connection carried over a first network utilizing a first radio access technology (RAT);

selecting a second data connection based on a second criteria while data is being transmitted, said data connection carried over a second network utilizing a second RAT;

requesting a first QoS from a wireless network or transport architecture while there is no data to be transmitted; and

requesting a second QoS from a wireless network or transport architecture while data is transmitted.

11. A multi-mode mobile communication device comprising:

a first transceiver adapted to be connected to a server using a first radio access technology (RAT);

a second transceiver adapted to be connected to the server using a second RAT; and

a processor for

selecting a first data connection carried over a first radio access technology (RAT) based on a first requested QoS, and

selecting a second data connection over a second RAT based on a second requested QoS.

12. A multi-mode mobile communication device comprising:

a first transceiver adapted to be connected to a server using a first radio access technology (RAT);

a second transceiver adapted to be connected to the server using a second RAT; and

a processor for

selecting a first data connection based on a first criteria while there is no data to be transmitted, said first data connection carried over a first network utilizing a first radio access technology (RAT),

selecting a second data connection based on a second criteria while data is being transmitted, said data connection carried over a second network utilizing a second RAT,

requesting a first QoS from a wireless network or transport architecture while there is no data to be transmitted, and

requesting a second QoS from a wireless network or transport architecture while data is transmitted.