US7764593B2

5G,4G

Title

Downlink signal configurating method and device in mobile communication system, and synchronization and cell searching method and device using the same

Application Number:

US20030577034

Publication Date:

27-07-2010

Current Assignee:

Family ID:

Application Date:

19-11-2003

Publication Country:

US

Priority Date:

24-10-2003

Declaring Company:

Abstract  Abstract

Disclosed is a downlink signal configuring method and device and synchronization and cell search method and device using the same in a mobile communication system. A downlink frame has plural symbols into which pilot subcarriers are distributively arranged with respect to time and frequency axes. Initial symbol synchronization and initial frequency synchronization are estimated by using a position at which autocorrelation of a cyclic prefix of a downlink signal and a valid symbol of the downlink is maximized and cell search and integer-times frequency synchronization are estimated by using pilot subcarriers included in the estimated symbol. Fine symbol synchronization fine frequency synchronization and downlink frame synchronization is estimated by using an estimated cell search result. Downlink frequency and time tracking is performed cell tracking is performed by using a position set of pilot subcarriers inserted into the downlink frame fine symbol synchronization tracking and fine frequency synchronization tracking are repeated by using the pilot subcarriers to perform the frequency and time tracking of the downlink frame.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.