Multicarrier reverse link timing synchronization system, device and method
First Claim
1. A communication system including:
- A) a base unit, for transmitting a forward link signal, receiving a multicarrier reverse link signal, and determining a timing offset for signals received on a reverse link timing synchronization channel, wherein the reverse link synchronization channel comprises a plurality of adjacent reverse link carrier frequencies that are utilized by a subscriber unit which tranmits a multicarrier signal to facilitate reverse link multicarrier signal symbol timing synchronization, andB) a plurality of subscriber units which transmit multicarrier signals, for receiving a forward link signal, transmitting a reverse link symbol timing synchronization burst on a reverse link timing synchronization channel wherein the reverse link timing synchronization channel comprises a plurality of adjacent reverse link carrier frequencies that are utilized by each subscriber unit, and adjusting a timing reference for transmitting signals to facilitate reverse link timing synchronization.
4 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides a communication system, device and method of reverse link symbol timing synchronization of transmited signals to facilitate reverse link timing synchronization. A base unit transmits a forward link signal, receives a reverse link signal, and determines a timing offset for signals received on a reverse link timing synchronization channel, wherein the reverse link synchronization channel comprises a plurality of adjacent reverse link carrier frequencies that are utilized by a multicarrier subscriber unit to facilitate reverse link symbol timing synchronization. A plurality of multicarrier subscriber units receive a forward link signal and transmit a reverse link symbol timing synchronization burst on a reverse link timing synchronization channel wherein the reverse link timing synchronization channel comprises a plurality of adjacent reverse link carrier frequencies that are utilized by each subscriber unit, and adjusts a timing reference for transmitting signals to facilitate reverse link timing synchronization.
-
Citations
25 Claims
-
1. A communication system including:
-
A) a base unit, for transmitting a forward link signal, receiving a multicarrier reverse link signal, and determining a timing offset for signals received on a reverse link timing synchronization channel, wherein the reverse link synchronization channel comprises a plurality of adjacent reverse link carrier frequencies that are utilized by a subscriber unit which tranmits a multicarrier signal to facilitate reverse link multicarrier signal symbol timing synchronization, and B) a plurality of subscriber units which transmit multicarrier signals, for receiving a forward link signal, transmitting a reverse link symbol timing synchronization burst on a reverse link timing synchronization channel wherein the reverse link timing synchronization channel comprises a plurality of adjacent reverse link carrier frequencies that are utilized by each subscriber unit, and adjusting a timing reference for transmitting signals to facilitate reverse link timing synchronization. - View Dependent Claims (2, 3, 4)
-
-
5. A communication system including:
-
A) a base unit, for transmitting a forward link signal, receiving a multicarrier reverse link signal, and determining a timing offset for signals received on a reverse link timing synchronization channel, wherein the synchronization channel comprises a plurality of adjacent reverse link carrier frequencies that are utilized by a subscriber unit that transmits a multicarrier signal to facilitate reverse link symbol timing synchronization, and B) a plurality of subscriber units which transmit multicarrier signals, for receiving a forward link signal, transmitting a reverse link symbol timing synchronization burst on a first reverse link timing synchronization channel wherein the first reverse link timing synchronization channel comprises predetermined time intervals and a plurality of adjacent reverse link carrier frequencies to facilitate initial reverse link timing synchronization, and uses a second reverse link timing synchronization channel comprising predetermined time intervals and at least one reverse link carrier frequency, and adjusting a timing reference for transmitting signals, to facilitate tracking updates of reverse link timing synchronization. - View Dependent Claims (6, 7, 8)
-
-
9. A subscriber unit that transmits multicarrier signals including:
-
(A) a reverse link timing synchronization signal generator, coupled to a transmitter, for generating a formatted reverse link symbol timing synchronization message for a reverse link timing synchronization channel, with the reverse link timing synchronization channel having at least a plurality of adjacent reverse link carrier frequencies, and for generating a reverse link symbol timing synchronization burst containing the formatted timing synchronization message, B) a timing reference adjustment unit, coupled to the transmitter, a receiver, and the reverse link timing synchronization signal generator, for adjusting a transmit timing of the reverse link signal in response to a timing offset message from a forward link received signal, C) the transmitter, coupled to the reverse link timing synchronization signal generator and the timing reference adjustment unit, for transmitting multicarrier reverse link signals including the reverse link timing synchronization signal, and; D) the receiver, coupled to the timing reference adjustment unit, for receiving a forward link signal containing the timing offset message. - View Dependent Claims (10, 11, 12, 17, 18, 19)
-
-
13. A base unit for receiving multicarrier signals including:
-
(A) a receiver, for receiving a reverse link symbol timing synchronization burst containing a reverse link symbol timing synchronization message received on a reverse link timing synchronization channel, with the reverse link timing synchronization channel having a plurality of adjacent reverse link carrier frequencies, B) a reverse link timing synchronization signal analyzer, coupled to the receiver, for measuring a timing of a reverse link timing synchronization message, and for comparing the measured timing to a predetermined reference timing to determine a timing offset value, C) a timing offset message generator, coupled to the reverse link timing synchronization signal analyzer, for generating a timing offset message responsive to the timing offset value, and D) a transmitter, coupled to the timing offset message generator, for transmitting a forward link signal containing the timing offset message. - View Dependent Claims (14, 15, 16, 20, 21)
-
-
22. A method for reverse link symbol timing synchronization of multicarrier signals including the steps of:
-
A) generating a formatted reverse link symbol timing synchronization message for a reverse link timing synchronization channel, with the reverse link timing synchronization channel having at least a plurality of adjacent reverse link carrier frequencies, and for generating a reverse link symbol timing synchronization burst containing the formatted timing synchronization message, B) adjusting a transmit timing of a reverse link signal in response to a timing offset message from a forward link received signal, C) transmitting multicarrier reverse link signals including the reverse link timing synchronization signal, and D) receiving a forward link signal containing the timing offset message. - View Dependent Claims (23, 24, 25)
-
Specification