Method and apparatus for dynamic spectrum allocation

• US 6,553,060 B2
• Filed: 09/28/2001
• Issued: 04/22/2003
• Est. Priority Date: 10/25/1999
• Status: Expired due to Term

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Souissi, Slim, Callaway, Edgar H. Jr.
• Primary Examiner(s): Bayard, Emmanuel
• Application Number:
  US09/967,282
• Publication Number:
  US 20020009158A1
• Time in Patent Office: 571 Days
• Field of Search: 375/130, 375/136, 375/219, 375/133, 375/220, 375/141, 375/257, 375/297, 375/146, 370/278, 370/282, 370/320, 370/329, 370/342, 370/335, 370/441, 370/459, 370/431, 405/84, 405/73, 405/24, 405/450, 405/464, 405/509, 405/451, 405/452, 405/406
• US Class Current: 375/219
• CPC Class Codes: H04L 27/0006 Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio for spectrum sharing between different networks H04W16/14
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0033 each allocating device acting autonomously, i.e. without negotiation with other allocating devices
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0062 Avoidance of ingress interference, e.g. ham radio channels
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA

Abstract

A transceiver device (52 or 10) operates as a source of a data transmission in a communication system (50) capable of dynamically allocating spectrum for transmission of the data transmission between the transceiver device (52) and a second transceiver device (51). The transceiver device (10) includes a transmitter, a receiver coupled to the transmitter and a processor or controller (12) coupled to the transmitter and receiver. The transceiver device is programmed to monitor the spectrum (channels 1-13 of FIG. 3) to determine if a portion (channels 4-8 for example in time slot 8) of the spectrum is available. The transceiver determines what portion of the spectrum is desired for data transmission and then transmits (see time slots 11 and 13) the data transmission within a dynamically selected portion of the available spectrum.

Claims

1. A method of dynamic spectrum allocation for transmission of data within a frequency band, comprising the steps at a source of the transmission of:

monitoring the spectrum by scanning the frequency band to determine an available portion of the spectrum;

determining a desired portion of the available portion of the spectrum for the data to be transmitted;

transmitting the data within the desired portion of the spectrum, wherein the transmitting of the data comprises the step of transmitting data of a first type in a first occupied bandwidth and the step of transmitting data of a second type in a second occupied bandwidth wherein the first occupied bandwidth is significantly less than the second occupied bandwidth; and

monitoring a remainder of the spectrum while the source of the transmission is transmitting to the desired portion of the spectrum.

2. A method of dynamic spectrum allocation for transmission of data within a frequency band, comprising the steps at a source of the transmission of:

monitoring the spectrum by scanning the frequency band to determine an available portion of the spectrum;

determining a desired portion of the available portion of the spectrum for the data to be transmitted; and

transmitting the data within the desired portion of the spectrum, wherein the transmitting of the data comprises the step of transmitting data of a first type in a first occupied bandwidth and the step of transmitting data of a second type in a second occupied bandwidth wherein the first occupied bandwidth is significantly less than the second occupied bandwidth,

wherein the portion of the spectrum selected in the monitoring, determining, and transmitting steps is a variable channel bandwidth sufficient to transmit the data.

3. A method of dynamic spectrum allocation for transmission of data within a frequency band, comprising the steps at a source of the transmission of:

monitoring the spectrum by scanning the frequency band to determine an available portion of the spectrum;

determining a desired portion of the available portion of the spectrum for the data to be transmitted;

transmitting the data within the desired portion of the spectrum, wherein the transmitting of the data comprises the step of transmitting data of a first type in a first occupied bandwidth and the step of transmitting data of a second type in a second occupied bandwidth wherein the first occupied bandwidth is significantly less than the second occupied bandwidth; and

receiving an incoming data input that will require a high speed data link on the selected portion of the spectrum.

4. A method of dynamic spectrum allocation for transmission of data within a frequency band, comprising the steps at a source of the transmission of:

monitoring the spectrum by scanning the frequency band to determine an available portion of the spectrum;

determining a desired portion of the available portion of the spectrum for the data to be transmitted; and

transmitting the data within the desired portion of the spectrum, wherein the transmitting of the data comprises the step of transmitting data of a first type in a first occupied bandwidth and the step of transmitting data of a second type in a second occupied bandwidth wherein the first occupied bandwidth is significantly less than the second occupied bandwidth,

wherein the method discontinues monitoring before transmitting the data within the desired portion of the spectrum when a predetermined number of data packets or a predetermined time suggests a high probability that the desired portion of the spectrum will not be subject to debilitating interference.

5. The method of claim 4, wherein the method discontinues monitoring when the source of the transmission has errorless reception of a predetermined number of data packets or has errorless reception of data packets for a predetermined period of time.