초록 ▼

A random access protocol system and method for communicating between a mobile station and a base station in a multi-access digital radio communication system, including the steps of cyclically repeating a random access sequence and transmitting each cyclically repeated random access sequence in an o

A random access protocol system and method for communicating between a mobile station and a base station in a multi-access digital radio communication system, including the steps of cyclically repeating a random access sequence and transmitting each cyclically repeated random access sequence in an orthogonal frequency division multiplex format from the mobile station as an uplink transmission.

대표청구항 ▼

[ What is claimed as new and is desired to be secured by Letters Patent of the United States is:] [18.] A method of measuring performance of a random access sequence transmitted in a mobile radio communication system comprising the steps of:generating a signal comprising a random access sequence, sa

[ What is claimed as new and is desired to be secured by Letters Patent of the United States is:] [18.] A method of measuring performance of a random access sequence transmitted in a mobile radio communication system comprising the steps of:generating a signal comprising a random access sequence, said generating step comprising,modulating said random access sequence onto a plurality of sub-carriers to form said signal;processing said signal via an inverse fast Fourier transform; andintroducing a time shift into said signal;subjecting said signal to a multi-path effect said subjecting step comprising the steps of,processing said signal to create a delay spread, andprocessing said signal to create a doppler shift;passing said signal to a receiver;detecting at said receiver said random access sequence in said signal; andestimating a timing advance based on said signal in said receiver, said timing advance indicative of said performance.