SELF-ORGANIZING OFDMA SYSTEM FOR BROADBAND COMMUNICATION

• US 20140355528A1
• Filed: 08/26/2013
• Published: 12/04/2014
• Est. Priority Date: 05/28/2013
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Roy, Aloke, Anandappan, Thanga, Malve, Sharath Babu
• Granted Patent: US 9,301,306 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04B 7/1856 for call routing
• CPC Class Codes: H04W 4/025 using location based information parameters
• CPC Class Codes: H04W 72/51 based on terminal or device properties
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

Systems and methods for a self-organizing OFDMA system for broadband communication are provided. In certain embodiments a communication node for a self organizing network comprises a communication interface configured to transmit data to and receive data from a plurality of nodes; and a processing unit configured to execute computer readable instructions. Further, computer readable instructions direct the processing unit to identify a sub-region within a cell, wherein the communication node is located in the sub-region; and transmit at least one data frame, wherein the data from the communication node is transmitted at a particular time and frequency as defined within the at least one data frame, where the time and frequency are associated with the sub-region.

Claims

1. A communication node for a self organizing network, the communication node comprising:

a communication interface configured to transmit data to and receive data from a plurality of nodes;

a processing unit configured to execute computer readable instructions, wherein the computer readable instructions direct the processing unit to;

identify a sub-region within a cell, wherein the communication node is located in the sub-region;

transmit at least one data frame, wherein the data from the communication node is transmitted at a particular time and frequency as defined within the at least one data frame, where the time and frequency are associated with the sub-region.

2. The communication node of claim 1, wherein the communication node is at least one of:

a ground based communication node; and

an aircraft.

3. The communication node of claim 1, wherein the transmission of the at least one data frame comprises:

transmitting a data resource unit request in a link map of a first frame in the at least one data frame, wherein the data resource unit request identifies the particular time and frequency at which the data is transmitted; and

transmitting the data in a data resource unit in a second frame, wherein the data resource unit is transmitted at the particular time and frequency.

4. The communication node of claim 3, wherein the computer readable instructions further direct the processing unit to:

receive at least one data resource unit request in the link map of the first frame from at least one other communication node within the cell; and

schedule the transmission of data based on the at least one data resource unit request and the data resource unit request.

5. The communication node of claim 1, wherein the particular time and frequency are statically associated with the sub-region.

6. The communication node of claim 1, wherein the communication node is an aircraft, the cell is divided into sub-regions based on the number of aircraft that can exist safely in the cell at the same time;

7. The communication node of claim 1, wherein the cell is divided into sub-regions based on the number of lateral paths through the cell, the number of vertical levels, and the number of communication nodes that can exist on a lateral path at the same time.

8. The communication node of claim 1, wherein the frequency is a sub-carrier frequency of an orthogonal frequency-division multiplexing channel.

9. A self organizing network, the network comprising:

a plurality of communication nodes, wherein an individual communication node in the plurality of communication nodes comprises a processing unit that is configured to;

determine a position of the individual communication node;

transmit a data resource unit requests;

receive other data resource unit requests from other communication nodes in the plurality of communication nodes; and

schedule a transmission of node data based on the data resource unit request and the other data resource unit requests.

10. The network of claim 9, wherein the individual communication node is at least one of:

a ground based communication node; and

an aircraft.

11. The network of claim 9, wherein the transmission of the node data comprise transmitting the data resource unit request in a link map of a frame, wherein the data resource unit request identifies requirements of data resource units to be used for the transmission of the node data in a subsequent frame;

12. The network of claim 11, wherein the processing unit schedules the transmission of the node data according to a common scheduling algorithm that is used to schedule transmissions of other node data from the other communication nodes.

13. The network of claim 9, wherein a frame contains a plurality of data resource units at a plurality of frequencies, wherein each frequency in the plurality of frequencies comprises a plurality of symbols.

14. The network of claim 13, wherein the first processing unit and the second processing unit allocate data resource units to the transmission of the first node data at a first set of frequencies in the plurality of frequencies and to the transmission of the second node data at a second set of frequencies in the plurality of frequencies.

15. The network of claim 14, wherein when the first set of symbol time slots and the second set of symbol time slots overlap at a single frequency, the first processing unit and the second processing unit designate a set of data resource units associated with the single frequency as a gap between data resource units allocated to the transmission of the first node data at the single frequency and data resource units allocated to the transmission of the second node data at the single frequency.

16. The network of claim 13, wherein when the number of requested data resource units in the combined first data resource unit request and the second data resource unit request exceeds the number of data resource units in the plurality of data resource units, the first processing unit and the second processing unit decrease the number of allocated data resource units for the first node data and the second node data.

17. A method for a self-organized network, the method comprising:

calculating a position of a communication node within a cell;

identifying a transmission time and a transmission frequency associated with the position of the communication node;

scheduling the transmission of data at the transmission time and the transmission frequency; and

transmitting the data.

18. The method of claim 17, wherein scheduling the transmission of data comprises:

transmitting a data resource unit request in a link map of a first frame, wherein the data resource unit request is associated with the transmission time and the transmission frequency;

receiving at least one other data resource unit request in the link map of the first frame from at least one other communication node within the cell; and

allocating data resource units in a second frame for transmission of the data.

19. The method of claim 18, wherein the communication node and the at least one other communication node sequentially allocate data resource units according to the position of the communication node and the at least one other communication node within the cell;

and

wherein the communication node and the at least one other communication node use a standardized scheduling algorithm to schedule data transmissions.

20. The method of claim 17, wherein identifying the transmission time and the transmission frequency associated with the position of the communication node comprises identifying data resource units statically associated with the position of the communication node within the cell.