US Patent No. 9,426,829

RANDOM ACCESS METHOD AND RECEIVER


Patent No. 9,426,829
Issue Date August 23, 2016
Title Random Access Method And Receiver
Inventorship Bin Li, Shenzhen (CN)
Xue Wang, Shenzhen (CN)
Lei Li, Shenzhen (CN)
Hongfeng Qin, Shenzhen (CN)
Xiaoxiao Liu, Shenzhen (CN)
Assignee ZTE Corporation, Shenzhen, Guangdong Province (CN)

Claim of US Patent No. 9,426,829

1. A random access method, comprising:
after starting up, a receiver performing cell search and downlink synchronization to obtain a time reference;
the receiver obtaining a distance between the receiver and a base station;
the receiver selecting a random access format according to parameters and a load condition of a system where the receiver
is located;

the receiver obtaining a cell radius supported by the selected random access format, and calculating a line-of-sight transmission
time delay if the cell radius is less than the distance; and

based on the time reference, the receiver transmitting a random access subframe the line-of-sight transmission time delay
in advance.