Abstract
PROBLEM TO BE SOLVED: To provide a method for constructing and allocating an RACH preamble according to a cell radius of a base station irrespective of a length of a guard time (GT).
SOLUTION: A method for transmitting an RACH preamble comprises the steps of: receiving by user equipment information that is associated with predetermined preambles for a random access from a base station; and transmitting by the user equipment an RACH preamble selected from the predetermined preambles according to the information to the base station. The RACH preamble has a preamble format defined by a time-length value of a predetermined CP and either a time-length value of a first sequence or a second sequence the time-length value of the second sequence is two times the time-length value of the first sequence and the selected RACH preamble is configured only with the predetermined CP and either the first sequence or the second sequence without a time length of a guard time.
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| EP2176966B1 | ----- | ----- | ----- | ----- | ----- | ----- | ----- | |||
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Technologies
Resource configuration Random access
Product
Base Station (eNB/gNB)User Equipment (UE/Terminal)
Use Cases
Wireless communication
Services
Network access
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