METHODS AND APPARATUS FOR RANDOM ACCESS PROCEDURES WITH CARRIER AGGREGATION FOR LTE-ADVANCED SYSTEMS
First Claim
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1. For use in an eNodeB, a method for a random access procedure, the method comprising:
- receiving from a user equipment a random access preamble message on a physical random access channel (PRACH) on a first cell, the PRACH associated with a random access radio network temporary identifier (RA-RNTI); and
transmitting to the user equipment a random access response (RAR) message on a second cell,wherein at least one of the RAR message and the RA-RNTI comprises information configured to allow the user equipment to identify a target Timing Advance Group (TAG) or cell associated with the RAR message.
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Abstract
An eNodeB is configured to perform a method for a random access procedure in an LTE-Advanced system. The method includes receiving from a user equipment a random access preamble message on a physical random access channel (PRACH) on a first cell, the PRACH associated with a random access radio network temporary identifier (RA-RNTI). The method also includes transmitting to the user equipment a random access response (RAR) message on a second cell. At least one of the RAR message and the RA-RNTI includes information configured to allow the user equipment to identify a target Timing Advance Group (TAG) or cell associated with the RAR message.
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Citations
27 Claims
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1. For use in an eNodeB, a method for a random access procedure, the method comprising:
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receiving from a user equipment a random access preamble message on a physical random access channel (PRACH) on a first cell, the PRACH associated with a random access radio network temporary identifier (RA-RNTI); and transmitting to the user equipment a random access response (RAR) message on a second cell, wherein at least one of the RAR message and the RA-RNTI comprises information configured to allow the user equipment to identify a target Timing Advance Group (TAG) or cell associated with the RAR message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An eNodeB configured for a random access procedure, the eNodeB comprising:
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a controller configured to; receive from a user equipment a random access preamble message on a physical random access channel (PRACH) on a first cell, the PRACH associated with a random access radio network temporary identifier (RA-RNTI), and transmit to the user equipment a random access response (RAR) message on a second cell, wherein at least one of the RAR message and the RA-RNTI comprises information configured to allow the user equipment to identify a target Timing Advance Group (TAG) or cell associated with the RAR message. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A user equipment configured for a random access procedure, the user equipment comprising:
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a processor configured to; transmit to an eNodeB a random access preamble message on a physical random access channel (PRACH) on a first cell, the PRACH associated with a random access radio network temporary identifier (RA-RNTI), and receive from the eNodeB a random access response (RAR) message on a second cell, wherein at least one of the RAR message and the RA-RNTI comprises information configured to allow the user equipment to identify a target Timing Advance Group (TAG) or cell associated with the RAR message. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification