IP Library › Patent Application 18621995
Patent Application
App. No. 18/621,995

METHODS AND APPARATUS FOR MULTI-CARRIER COMMUNICATIONS WITH VARIABLE CHANNEL BANDWIDTH

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Quick Facts
Patent No.
US None
App. No.
18/621,995
Abstract

A mobile station using orthogonal frequency division multiple access (OFDMA). The frequency processing circuitry and the processor are configured to scan spectral bands for a first signal, the first signal having synchronization and system information. Wherein, the system information comprises configuration of a first multi-carrier communication structure, wherein the first multi-carrier communication structure comprises allocated subcarriers, a subcarrier bandwidth, and a time duration of an OFDM symbol. Further, the frequency processing circuitry and the processor configured to receive and process signals in the first multi-carrier communication structure and switch to receive and process signals using a second multi-carrier communication structure, the second multi-carrier communication structure having different subcarrier bandwidth than the first multi-carrier communication structure.

Claims (35)

1 . A mobile station using orthogonal frequency division multiple access (OFDMA), the mobile station comprising:

frequency processing circuitry; and

a processor, wherein:

the frequency processing circuitry and the processor are configured to scan spectral bands for a first signal, the first signal having synchronization and system information, wherein:

the system information comprises configuration of a first multi-carrier communication structure, wherein the first multi-carrier communication structure comprises allocated subcarriers, a subcarrier bandwidth, and a time duration of an OFDM symbol;

the frequency processing circuitry and the processor configured to receive and process signals in the first multi-carrier communication structure; and

the frequency processing circuitry and the processor configured to switch to receive and process signals using a second multi-carrier communication structure, the second multi-carrier communication structure having different subcarrier bandwidth than the first multi-carrier communication structure.

2 . The mobile station of claim 1 wherein the scan of the spectral bands for the first signal is based on a center frequency.

3 . The mobile station of claim 1 wherein the first and second multi-carrier communication structures comprise a frequency domain and a time domain.

4 . The mobile station of claim 1 wherein a number of allocated subcarriers is associated with a bandwidth of the first and second multi-carrier communication structures.

5 . A method performed by a mobile station, the method comprising:

scanning spectral bands for a first signal, the first signal having synchronization and system information, wherein:

the system information comprises configuration of a first multi-carrier communication structure, wherein the first multi-carrier communication structure comprises allocated subcarriers, a subcarrier bandwidth, and a time duration of an OFDM symbol;

receiving and processing signals in a first multi-carrier communication structure; and

switching to receiving and processing signals using a second multi-carrier communication structure, the second multi-carrier communication structure having different subcarrier bandwidth than the first multi-carrier communication structure.

6 . The method of claim 5 wherein scanning of the spectral bands for the first signal is based on a center frequency.

7 . The method of claim 5 wherein the first and second multi-carrier communication structures comprise a frequency domain and a time domain.

8 . The method of claim 5 wherein a number of allocated subcarriers is associated with a bandwidth of the first and second multi-carrier communication structures.

9 . A base station comprising:

frequency processing circuitry; and

a processor, wherein:

the frequency processing circuitry and the processor are configured to transmit a first signal, the first signal having synchronization and system information, wherein:

the system information comprises configuration of a first multi-carrier communication structure, wherein the first multi-carrier communication structure comprises allocated subcarriers, a subcarrier bandwidth, and a time duration of an OFDM symbol;

the frequency processing circuitry and the processor configured to transmit and process signals in the first multi-carrier communication structure; and

the frequency processing circuitry and the processor configured to switch to transmit signals using a second multi-carrier communication structure, the second multi-carrier communication structure having different subcarrier bandwidth than the first multi-carrier communication structure.

10 . The base station of claim 9 wherein the first and second multi-carrier communication structures comprise a frequency domain and a time domain.

11 . The base station of claim 9 wherein a number of allocated subcarriers is associated with a bandwidth of the first and second multi-carrier communication structures.

12 . At least one non-transient computer readable medium containing program instructions to perform a method of:

scanning spectral bands for a first signal, the first signal having synchronization and system information, wherein:

the system information comprises configuration of a first multi-carrier communication structure, wherein the first multi-carrier communication structure comprises allocated subcarriers, a subcarrier bandwidth, and a time duration of an OFDM symbol;

receiving and processing signals in a first multi-carrier communication structure; and

switching to receiving and processing signals using a second multi-carrier communication structure, the second multi-carrier communication structure having different subcarrier bandwidth than the first multi-carrier communication structure.

13 . The at least one non-transient computer readable medium of claim 12 wherein scanning of the spectral bands for the first signal is based on a center frequency.

14 . The at least one non-transient computer readable medium of claim 12 wherein the first and second multi-carrier communication structures comprise a frequency domain and a time domain.

15 . The at least one non-transient computer readable medium of claim 12 wherein a number of allocated subcarriers is associated with a bandwidth of the first and second multi-carrier communication structures.