Method and system for supporting an evolved UTRAN
A method and system for supporting an evolved universal mobile telecommunication systems (UMTS) terrestrial radio access network (E-UTRAN) are disclosed. The system includes a wireless transmit/receive unit (WTRU), a UTRAN and an E-UTRAN. The UTRAN sends to the WTRU a list of available radio access technologies in a coverage area of the UTRAN. The list includes information related to the E-UTRAN. The WTRU receives the list and may initiate a handoff based on the list. The WTRU then sends its multi-mode/multi-RAT capability information including the E-UTRAN capability to the UTRAN. The UTRAN then sends a measurement capability message to the WTRU. The measurement capability message includes parameters necessary for performing measurements on an E-UTRAN channel. The WTRU performs measurements based on the measurement capability message and reports measurement results to the UTRAN. The UTRAN may initiate a handoff to the E-UTRAN based on the measurement results.
1. An integrated circuit, comprising:
circuitry configured to generate a first message indicating multi-mode/multi-RAT capability information, wherein the multi-mode/multi-RAT capability information includes an indication of support for evolved universal mobile telecommunication systems (UMTS) terrestrial radio access network (UTRAN) (E-UTRAN) and support for handover associated with UTRAN and E-UTRAN;
circuitry configured to output the first message to a transmitter for transmission to a UTRAN base station via a first UTRAN channel:
circuitry configured to receive, from a receiver, a handover message from the UTRAN base station via a second UTRAN channel;
circuitry configured to extract first information associated with an E-UTRAN from the handover message, the first information indicating a frequency band and a bandwidth associated with handover to the E-UTRAN; and
circuitry configured to handover to the E-UTRAN based on the handover message.
2. The integrated circuit of claim 1 , wherein the first message indicates a supported E-UTRAN frequency band.
3. The integrated circuit of claim 1 , further comprising circuitry configured to receive, from the receiver, a message over a broadcast control channel (BCCH) indicating a frequency and a bandwidth for measurements on the E-UTRAN.
4. The integrated circuit of claim 1 , wherein the multi-mode/multi-RAT capability information includes an indication of support for Global System for Mobile Communications (GSM).
5. A method for use in a base station, the method comprising:
receiving a first message indicating multi-mode/multi-RAT capability information from a wireless transmit/receive unit (WTRU), wherein the multi-mode capability information includes an indication of support for Evolved Universal Mobile Telecommunication System (UMTS) radio access network (UTRAN) (E-UTRAN) and support for handover associated with UTRAN and E-UTRAN;
generating a handover message that includes information associated with an E-UTRAN, wherein the information indicates a frequency band and a bandwidth associated with handover to the E-UTRAN; and
transmitting the handover message to the WTRU via a second UTRAN channel.
6. The method of claim 5 , wherein the first message indicates a supported E-UTRAN frequency band.
7. The method of claim 5 , message further comprising transmitting a message over a broadcast control channel (BCCH) indicating a frequency and a bandwidth for measurements on the E-UTRAN.
8. The method of claim 5 , wherein the multi-mode/multi-RAT capability information includes an indication of support for Global System for Mobile Communications (GSM).
9. A base station for use in wireless communications comprising:
a receiver configured to receive a first message indicating multi-mode/multi-RAT capability information from a wireless transmit/receive unit (WTRU), wherein the multi-mode/multi-RAT capability information includes an indication of support for Evolved Universal Mobile Telecommunication System (UMTS) radio access network (UTRAN) (E-UTRAN) and support for handover associated with UTRAN and E-UTRAN;
a processor configured to generate a handover message that includes information associated with an E-UTRAN, wherein the information indicates a frequency band and a bandwidth associated with handover to the E-UTRAN; and
a transmitter configured to transmit the handover message to the WTRU via a second UTRAN channel.
10. The base station of claim 9 , wherein the first message indicates a supported E-UTRAN frequency band.
11. The base station of claim 9 , wherein the transmitter and processor are further configured to transmit a message over a broadcast control channel (BCCH) indicating a frequency and a bandwidth for measurements on the E-UTRAN.
12. The base station of claim 9 , wherein the multi-mode/multi-RAT capability information includes an indication of support for Global System for Mobile Communications (GSM).
13. A wireless transmit/receive unit (WTRU) comprising:
a processor configured to generate a first message indicating multi-mode/multi-RAT capability information, wherein the multi-mode/multi-RAT capability information includes an indication of support for Evolved Universal Mobile Telecommunication System (UMTS) radio access network (UTRAN) (E-UTRAN) E-UTRAN and support for handover associated with UTRAN and E-UTRAN;
a transmitter configured to transmit the first message to a UTRAN base station via a first UTRAN channel; and
a receiver configured to receive a handover message from the UTRAN base station via a second UTRAN channel,
wherein the processor is further configured to extract first information associated with an E-UTRAN from the handover message, the first information indicating a frequency band and a bandwidth associated with handover to the E-UTRAN, and
initiate handover to the E-UTRAN based on the handover message.
14. The WTRU of claim 13 , wherein the first message indicates a supported E-UTRAN frequency band.
15. The WTRU of claim 13 , wherein the receiver is further configured to receive a message over a broadcast control channel (BCCH) indicating a frequency and a bandwidth for measurements on the E-UTRAN.
16. The WTRU of claim 13 , wherein the multi-mode/multi-RAT capability information includes an indication of support for Global System for Mobile Communications (GSM).