CN1211941C

3G

Title

ORTHOGONAL CODE SYNCHRONIZATION SYSTEM AND METHOD FOR SPREAD SPECTRUM CDMA COMMUNICATIONS

Application Number:

CN1998802854

Publication Date:

20-07-2005

Current Assignee:

Family ID:

Application Date:

26-02-1998

Declaring Company:

Publication Country:

US

Priority Date:

28-02-1997

Title

ORTHOGONAL CODE SYNCHRONIZATION SYSTEM AND METHOD FOR SPREAD SPECTRUM CDMA COMMUNICATIONS

Application Number:

CN1998802854

Family ID:

Publication Country:

US

Publication Date:

20-07-2005

Application Date:

26-02-1998

Priority Date:

28-02-1997

Current Assignee:

Declaring Company:

Abstract  Abstract

A cellular radio system wherein the base station receiver capable of receiving data from the mobile terminal on the reverse link to four modes. In the first mode the mobile terminal sends an independent user pilot on the reverse link and the user data channel is synchronized to this independent user pilot. In the second mode the mobile terminal makes it dependent on received user pilot frequency of base station of the pilot and the user data channel is synchronized with user pilot. In the third mode the mobile terminal makes the user pilot frequency belonging to the received base station pilot ranging information but the user data channel received by the base station in an orthogonal mode. calibrating the user pilot channel and phase relationship between user data channel. user pilot carrier is also used for user data channel of the carrier and can be used as carrier wave reference of detecting user data channel. In the fourth mode the mode 3 of the slave pilot mode is used to capture but after capturing phase of the mobile user pilot code to make it synchronous with the user data channel so that it can be orthogonal channels.

A cellular radio system in which a base station receiver can receive on the reverse link data from a mobile terminal in four modes. In the first mode the mobile terminal sends an independent user pilot on the reverse link and the user data channel is synchronized to this independent user pilot. In the second mode the mobile terminal slaves its user pilot to the received base stations pilot and the user data channel is synchronized with the user pilot. In the third mode the mobile terminal slaves its user pilot to the received base station pilot but the user data channel operates in the orthogonal mode using the ranging information received from the base station. The phase relationship between the user pilot channel and the user data channel is calibrated. The user pilot carrier is also the carrier for the user data channel and can be used as the carrier reference for detecting the user data channel. In the fourth mode the slaved pilot implementation of mode three is used for acquisition but after acquisition the user pilot code is phase shifted to be synchronous with the user data channel making it an orthogonal channel.

A cellular radio system in which a base station receiver can receive on the reverse link data from a mobile terminal in four modes. In the first mode the mobile terminal sends an independent user pilot on the reverse link and the user data channel is synchronized to this independent user pilot. In the second mode the mobile terminal slaves its user pilot to the received base stations pilot and the user data channel is synchronized with the user pilot. In the third mode the mobile terminal slaves its user pilot to the received base station pilot but the user data channel operates in the orthogonal mode using the ranging information received from the base station. The phase relationship between the user pilot channel and the user data channel is calibrated. The user pilot carrier is also the carrier for the user data channel and can be used as the carrier reference for detecting the user data channel. In the fourth mode the slaved pilot implementation of mode three is used for acquisition but after acquisition the user pilot code is phase shifted to be synchronous with the user data channel making it an orthogonal channel.

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.