Abstract
Methods and apparatuses are disclosed for a wireless transmit/receive unit (WTRU) to perform a multi-radio access technology (RAT) access (MRA) operation. The apparatus may include a WTRU comprising a transceiver and a processor configured to send a non-access stratum (NAS) access request message to a network node using a first radio access technology (RAT). The message may indicate that the WTRU can connect to both a network node using the first RAT and a network node using a second RAT. The transceiver may be configured to receive a NAS accept message and a message comprising configuration information for the second RAT. The transceiver and the processor may be further configured to connect to a network node using the second RAT based on the received configuration information and communicate with both the network node using the first RAT and the network node using the second RAT.
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Technologies
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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 send, to a network node using a first radio access technology (RAT), a non-access stratum (NAS) access request message indicating that the WTRU can connect to both a network node using the first RAT and a network node using a second RAT, wherein the first RAT and the second RAT are different RATs; the transceiver is configured to receive, from the network node using the first RAT, a NAS access accept message and a message comprising configuration information for the second RAT; and the transceiver is configured to connect to a network node using the second RAT based on the received configuration information and communicate with both the network node using the first RAT and the network node using the second RAT.
2. The WTRU of claim 1 wherein the NAS access accept message includes an indication as to whether the WTRU is permitted to connect to the network node using the first RAT and the network node using the second RAT.
3. The WTRU of claim 1 wherein the message comprising configuration information for the second RAT is received in a radio resource control (RRC) message.
4. The WTRU of claim 1 wherein the first RAT is a long term evolution (LTE) RAT.
5. The WTRU of claim 1 wherein the transceiver and the processor are configured to communicate with a single NAS entity and a respective radio resource control (RRC) entity associated with each of the first RAT and the second RAT.
6. The WTRU of claim 1 wherein the transceiver and the processor are configured to read system information of cells associated with the second RAT and determine whether the WTRU is permitted to access the cells associated with the second RAT.
7. The WTRU of claim 1 wherein the transceiver and the processor are configured to receive a radio resource control (RRC) message from the network node using the first RAT that indicates that the WTRU is to take measurements of cells associated with the second RAT.
8. A method comprising:
sending, by a wireless transmit/receive unit (WTRU), to a network node using a first radio access technology (RAT), a non-access stratum (NAS) access request message indicating that the WTRU can connect using both a network node using the first RAT and a network node using a second RAT, wherein the first RAT and the second RAT are different RATs; receiving, by the WTRU, from the network node using the first RAT, a NAS access accept message and a message comprising configuration information for the second RAT; and connecting to a network node using the second RAT based on the received configuration information and communicate with both the network node using the first RAT and the network node using the second RAT.
9. The method of claim 8 wherein the NAS access accept message includes an indication as to whether the WTRU is permitted to connect to the network node using the first RAT and the network node using the second RAT.
10. The method of claim 8 wherein the message comprising configuration information for the second RAT is received in a radio resource control (RRC) message.
11. The method of claim 8 wherein the first RAT is a long term evolution (LTE) RAT.
12. The method of claim 8 further comprising communicating, by the WTRU, with a single NAS entity and a respective radio resource control (RRC) entity associated with each of the first RAT and the second RAT.
13. The method of claim 8 further comprising reading, by the WTRU, system information of cells associated with the second RAT and determining, by the WTRU, whether the WTRU is permitted to access the cells associated with the second RAT.
14. The method of claim 8 further comprising receiving, by the WTRU, a radio resource control (RRC) message from the network node using the first RAT that indicates that the WTRU is to take measurements of cells associated with the second RAT.
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
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.