FIELD: wireless communication.
SUBSTANCE: method for a random access procedure performed by a network device includes selecting one of a plurality of preamble indices of a first resource, and at least one set of a plurality of preamble indices is mapped to at least one second resource based on a first number of at least one set of the plurality indices of the preamble and the second number of at least one second resource; transmitting to the network node a first message including a preamble on the selected preamble index of the first resource and a payload on the second resource associated with the selected preamble index; and receiving from the network node a second message in response to the first message.
EFFECT: improving the performance of the random access procedure.
14 cl, 20 dwg
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