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.
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Technologies
Product
Use Cases
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Claim
1. A wireless transmit/receive unit (WTRU) comprising:
a transceiver; and a processor, wherein the processor and the transceiver are configured to:
receive messages on a first cell using a first radio access technology (RAT);
receive, on the first cell, a radio resource control (RRC) reconfiguration message, wherein the RRC reconfiguration message includes first information indicating to the WTRU to use a second cell using the first RAT, and second information indicating to the WTRU to use a third cell using a second RAT, wherein the first RAT and the second RAT are different RATs;
responsive to receiving the first information, initiate a first random access procedure on the second cell using the first RAT; and
responsive to receiving the second information, initiate a second random access procedure on the third cell using the second RAT.
2. The WTRU of claim 1, wherein the RRC reconfiguration message is associated with handover.
3. The WTRU of claim 1, wherein the processor and the transceiver are further configured to:
determine, based on the first random access procedure, uplink timing information for the second cell using the first RAT; and determine, based on the second random access procedure, uplink timing information for the third cell using the second RAT.
4. The WTRU of claim 1, wherein the first RAT is long term evolution.
5. The WTRU of claim 1, wherein the processor and the transceiver are further configured to send transmissions using security mechanisms for the first RAT.
6. The WTRU of claim 1, wherein the processor and the transceiver are further configured to send transmissions using security mechanisms for the second RAT.
7. The WTRU of claim 1, wherein the RRC reconfiguration message is received on a first signaling radio bearer (SRB).
8. A method performed by a wireless transmit/receive unit (WTRU), the method comprising:
receiving messages on a first cell using a first radio access technology (RAT); receiving, on the first cell, a radio resource control (RRC) reconfiguration message, wherein the RRC reconfiguration message includes first information indicating to the WTRU to use a second cell using the first RAT, and second information indicating to the WTRU to use a third cell using a second RAT, wherein the first RAT and the second RAT are different RATs; responsive to receiving the first information, initiating a first random access procedure on the second cell using the first RAT; and responsive to receiving the second information, initiating a second random access procedure on the third cell using the second RAT.
9. The method of claim 8, wherein the RRC reconfiguration message is associated with handover.
10. The method of claim 8, further comprising:
determining, based on the first random access procedure, uplink timing information for the second cell using the first RAT; and determining, based on the second random access procedure, uplink timing information for the third cell using the second RAT.
11. The method of claim 8, wherein the first RAT is long term evolution.
12. The method of claim 8, further comprising sending transmissions using security mechanisms for the first RAT.
13. The method of claim 8, further comprising sending transmissions using security mechanisms for the second RAT.
14. The method of claim 8, wherein the RRC reconfiguration message is received on a first signaling radio bearer (SRB).
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.