Random phase multiple access system with meshing

• US 7,773,664 B2
• Filed: 12/29/2008
• Issued: 08/10/2010
• Est. Priority Date: 03/18/2008
• Status: Active Grant

• Current Assignee: Ingenu Inc.
• Original Assignee: On-Ramp Wireless Incorporated
• Inventors: Myers, Theodore J.
• Primary Examiner(s): BURD, KEVIN MICHAEL
• Application Number:
  US12/345,374
• Publication Number:
  US 20090238202A1
• Time in Patent Office: 589 Days
• Field of Search: 375/130, 375/140, 375/146, 375/147, 375/150
• US Class Current: 375/150
• CPC Class Codes: H04B 1/707 using direct sequence modulation
• CPC Class Codes: H04J 13/0022 PN, e.g. Kronecker
• CPC Class Codes: H04J 13/10 Code generation

Abstract

A method of communicating through a random phase multiple access network is provided. A signal that has been spread using a pseudo-noise code and offset by a random timing offset and that contains payload data is received from a device. A destination is selected for the payload data based on a characteristic of the multiple access network. The payload data is transmitted to the selected destination.

Claims

1. A method for communication through a multiple access communication network, the method comprising:

receiving a first signal from a first device, wherein the first signal is spread using a first predetermined pseudo-noise (PN) code, wherein the first signal is configured to be transmitted after a first delay comprising a first random number of chips relative to a beginning of a slot, and further wherein the first signal includes a first payload data;

receiving a second signal from a second device, wherein the second signal is spread using the first predetermined PN code, wherein the second signal is configured to be transmitted after a second delay comprising a second random number of chips relative to the beginning of the slot, and further wherein the second signal includes a second payload data, and further wherein at least a portion of the second signal is received while the first signal is being received;

selecting a first destination for the first payload data based on a first characteristic of the multiple access communication network;

selecting a second destination for the second payload data based on a second characteristic of the multiple access communication network; and

transmitting the first payload data to the selected first destination.

2. The method of claim 1, further comprising:

determining if the first destination and the second destination are identical; and

transmitting the second payload data with the first payload data to the selected first destination if the first destination and the second destination are identical.

3. The method of claim 1, wherein the first characteristic of the multiple access communication network is a seed value assigned to a device.

4. The method of claim 1, further comprising:

receiving a first communication signal on a broadcast channel including a first seed value; and

selecting a second seed value based on the received first communication signal.

5. The method of claim 4, further comprising communicating a request to associate to a device based on the first seed value.

6. The method of claim 4, further comprising communicating a request to associate to a device based on a power measurement of the received first communication signal.

7. The method of claim 1, further comprising receiving a transmission from an associated device.

8. The method of claim 7, further comprising determining a timing based on the received transmission.

9. The method of claim 7, further comprising determining a transmission power level based on the received transmission.

10. The method of claim 4, further comprising communicating a request to associate to a second device based on one or more missed messages.

11. The method of claim 4, further comprising transmitting a second communication signal on the broadcast channel with the selected second seed value.

12. The method of claim 1, further comprising transmitting a broadcast channel message permitting a neighboring device to engage in communication as a peer.

13. The method of claim 1, further comprising determining a frame timing or a frequency drift from the received communication signal.

14. The method of claim 1, wherein the multiple access communication network comprises a mesh network.

15. The method of claim 14, wherein the mesh network is based on the IEEE 802.11 set of standards.

16. An apparatus for communicating through a multiple access communication network, the apparatus comprising:

a receiver configured to receive a first signal from a first device and a second signal from a second device, wherein the first signal is spread using a first predetermined pseudo-noise (PN) code, wherein the first signal is configured to be transmitted after a first delay comprising a first random number of chips relative to a beginning of a slot, and further wherein the first signal includes a first payload data, wherein the second signal is spread using the first predetermined PN code, wherein the second signal is configured to be transmitted after a second delay comprising a second random number of chips relative to the beginning of the slot, and further wherein the second signal includes a second payload data, and further wherein at least a portion of the second signal is received while the first signal is being received;

a transmitter; and

a controller electrically coupled to the receiver and transmitter and operable to direct reception of the first signal with the receiver, to select a first destination for the first payload data from one or more devices based on a characteristic of the multiple access communication network, and to direct transmission of the first payload data to the first destination with the transmitter.

17. The apparatus of claim 16, wherein the characteristic of the multiple access communication network is a seed value assigned to a device.

18. The apparatus of claim 16, further comprising:

the controller operable to direct reception of a first communication signal on a broadcast channel in a communication network including a first seed value;

to select a second seed value based on the received first communication signal; and

to direct the transmission of a second communication signal on the broadcast channel in a communication network with the selected second seed value.