METHOD AND APPARATUS FOR RADIO RESOURCES MANAGEMENT IN MULTI-RADIO ACCESS TECHNOLOGY WIRELESS SYSTEMS

• US 20150208458A1
• Filed: 03/30/2015
• Published: 07/23/2015
• Est. Priority Date: 07/29/2011
• Status: Active Grant

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Inventors: Pelletier, Ghyslain, Pani, Diana
• Granted Patent: US 9,380,628 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 40/248 Connectivity information update
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 76/16 Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
• CPC Class Codes: H04W 76/19 Connection re-establishment
• CPC Class Codes: H04W 76/20 Manipulation of established connections
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• 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

Methods and apparatus for performing wireless communication in a wireless transmit/receive unit (WTRU) configured for multi-radio access technology (RAT) operation are disclosed. A method includes the WTRU wirelessly communicating information on a first operating frequency according to a first RAT. The WTRU also wirelessly communicates information on a second operating frequency according to a second RAT.

Claims

1. A wireless transmit/receive unit (WTRU) comprising:

circuitry configured to receive a first radio resource control (RRC) connection reconfiguration message from a cell of a first radio access technology (RAT);

wherein in response to the first RRC connection reconfiguration message, an RRC entity is configured and a first medium access control (MAC) entity is configured for the first RAT;

wherein the first RRC connection reconfiguration message includes information for configuring a first primary cell and at least one first secondary cell for the first RAT;

the circuitry is further configured to receive a second RRC connection reconfiguration message from a cell of the first RAT;

wherein in response to the second RRC connection reconfiguration message, the RRC entity is reconfigured for the second RAT and a second MAC entity is configured for the second RAT;

wherein the second RRC connection reconfiguration message includes information for configuring a second primary cell and at least one second secondary cell for the second RAT;

wherein the second RRC reconfiguration message includes information elements (IEs) for the first RAT and the second RAT;

wherein the first MAC entity and the second MAC entity are different; and

the circuitry is further configured to communicate with the first RAT and the second RAT simultaneously.

2. The WTRU of claim 1, wherein the first RAT and the second RAT are different air interface technologies.

3. The WTRU of claim 1, wherein the first RAT and the second RAT are a same air interface technology.

4. The WTRU of claim 1, wherein the IEs for the second RAT include radio bearer, transport channel and physical channel configuration information.

5. The WTRU of claim 1, wherein the IEs for the second RAT include a MAC-MainConfig IE and a PhysicalConfigDedicated IE.

6. The WTRU of claim 1, wherein the IEs for the second RAT include a RadioResourceConfigDedicated IE and a RadioResourceConfigCommon IE.

7. A method, performed by a wireless transmit/receive unit (WTRU), the method comprising:

receiving a first radio resource control (RRC) connection reconfiguration message from a cell of a first radio access technology (RAT);

wherein in response to the first RRC connection reconfiguration message, an RRC entity is configured and a first medium access control (MAC) entity is configured for the first RAT;

wherein the first RRC connection reconfiguration message includes information for configuring a first primary cell and at least one first secondary cell for the first RAT;

receiving a second RRC connection reconfiguration message from a cell of the first RAT;

wherein in response to the second RRC connection reconfiguration message, the RRC entity is reconfigured for the second RAT and a second MAC entity is configured for the second RAT;

wherein the second RRC connection reconfiguration message includes information for configuring a second primary cell and at least one second secondary cell for the second RAT;

wherein the second RRC reconfiguration message includes information elements (IEs) for the first RAT and the second RAT;

wherein the first MAC entity and the second MAC entity are different; and

communicating with the first RAT and the second RAT simultaneously.

8. The method of claim 7, wherein the first RAT and the second RAT are different air interface technologies.

9. The method of claim 7, wherein the first RAT and the second RAT are a same air interface technology.

10. The method of claim 7, wherein the IEs for the second RAT include radio bearer, transport channel and physical channel configuration information.

11. The method of claim 7, wherein the IEs for the second RAT include a MAC-MainConfig IE and a PhysicalConfigDedicated IE.

12. The method of claim 7, wherein the IEs for the second RAT include a RadioResourceConfigDedicated IE and a RadioResourceConfigCommon IE.