METHOD AND APPARATUS FOR SENDING AND RECEIVING RANDOM ACCESS RESPONSE IN A WIRELESS COMMUNICATION SYSTEM
First Claim
1. A method for wireless communication, comprising:
- transmitting a random access (RA) preamble for random access; and
receiving a random access response comprising a first part and a second part, the first part comprising a list of N RA preamble identifiers (IDs) for N RA preambles being responded to by the random access response, and the second part comprising N individual RA responses for the N RA preambles, where N is a value of one or greater.
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Abstract
Techniques for supporting random access by user equipments (UEs) in a wireless communication system are described. In one design, a UE transmits a random access (RA) preamble for random access. The UE thereafter receives a random access response composed of a first part and a second part. The first part includes a list of N RA preamble IDs for N RA preambles being responded to by the random access response, where N≧1. The second part includes N individual RA responses for the N RA preambles being responded to. The UE processes the first part to detect for an RA preamble ID of the RA preamble transmitted by the UE. If this RA preamble ID is not detected, then the UE skips the second part. Otherwise, the UE processes the second part to obtain an individual RA response for the transmitted RA preamble.
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Citations
30 Claims
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1. A method for wireless communication, comprising:
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transmitting a random access (RA) preamble for random access; and receiving a random access response comprising a first part and a second part, the first part comprising a list of N RA preamble identifiers (IDs) for N RA preambles being responded to by the random access response, and the second part comprising N individual RA responses for the N RA preambles, where N is a value of one or greater. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for wireless communication, comprising:
at least one processor configured to transmit a random access (RA) preamble for random access, and to receive a random access response comprising a first part and a second part, the first part comprising a list of N RA preamble identifiers (IDs) for N RA preambles being responded to by the random access response, and the second part comprising N individual RA responses for the N RA preambles, where N is a value of one or greater. - View Dependent Claims (12, 13, 14)
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15. An apparatus for wireless communication, comprising:
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means for transmitting a random access (RA) preamble for random access; and means for receiving a random access response comprising a first part and a second part, the first part comprising a list of N RA preamble identifiers (IDs) for N RA preambles being responded to by the random access response, and the second part comprising N individual RA responses for the N RA preambles, where N is a value of one or greater. - View Dependent Claims (16, 17, 18)
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19. A computer program product, comprising:
a computer-readable medium comprising; code for causing at least one computer to transmit a random access (RA) preamble for random access, and code for causing the at least one computer to receive a random access response comprising a first part and a second part, the first part comprising a list of N RA preamble identifiers (IDs) for N RA preambles being responded to by the random access response, and the second part comprising N individual RA responses for the N RA preambles, where N is a value of one or greater.
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20. A method for wireless communication, comprising:
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receiving at least one random access (RA) preamble from at least one user equipment (UE) for random access; and transmitting a random access response comprising a first part and a second part, the first part comprising a list of N RA preamble identifiers (IDs) for N RA preambles being responded to by the random access response, and the second part comprising N individual RA responses for the N RA preambles, where N is a value of one or greater. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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28. An apparatus for wireless communication, comprising:
at least one processor configured to receive at least one random access (RA) preamble from at least one user equipment (UE) for random access, and to transmit a random access response comprising a first part and a second part, the first part comprising a list of N RA preamble identifiers (IDs) for N RA preambles being responded to by the random access response, and the second part comprising N individual RA responses for the N RA preambles, where N is a value of one or greater. - View Dependent Claims (29, 30)
Specification