Patent ID: 11889563
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A method, comprising:
sending, by an access network device, a broadcast signal comprising random access configuration information; and
receiving, by the access network device according to the random access configuration information, a random access signal, wherein a preamble sequence comprised in the random access signal comprises K first symbols and Q second symbols, at least one first symbol of the K first symbols is different than at least one second symbol of the Q second symbols, K and Q are integers greater than or equal to 1, K+Q=NSEQ, and NSEQ is a quantity of symbols comprised in the preamble sequence; and
wherein the random access signal further comprises a cyclic prefix, the preamble sequence, and a guard time, and the K first symbols and the Q second symbols satisfy at least one of the following first conditions:
NSEQ≥K×(NCPi+1); or
TSEQ≥TCP≥ΔTRTD, and TSEQ≥TGT≥ΔTRTD; and
wherein NCPi represents an integral part of a quantity of symbols comprised in the cyclic prefix, TSEQ represents a time length of the preamble sequence, TCP represents a time length of the cyclic prefix, TGT represents a time length of the guard time, and ΔTRTD represents a maximum round trip transmission delay difference in a cell.