Systems and methods for frequency hopping in wireless communication systems

• US 9,287,925 B2
• Filed: 01/10/2014
• Issued: 03/15/2016
• Est. Priority Date: 01/10/2014
• Status: Active Grant

• Current Assignee: GE Infrastructure Technology, LLC (General Electric Company)
• Original Assignee: General Electric Company
• Inventors: Wilczewski, Jeffrey Michael
• Primary Examiner(s): Bocure, Tesfaldet
• Application Number:
  US14/152,546
• Publication Number:
  US 20150200710A1
• Time in Patent Office: 795 Days
• US Class Current: 1/1
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04B 1/715 Interference-related aspects
• CPC Class Codes: H04B 2001/7154 with means for preventing interference
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 74/085 collision avoidance

Abstract

A method may include determining whether events associated with at least one of a plurality of wireless devices are active. The method may then include sending a first command to each of the plurality of wireless devices when the events are not active, such that the first command changes a first frequency to a second frequency. The method may also include sending a second command to each wireless device of a portion of the plurality of wireless devices when the events are active, such that the second command changes the first frequency to the second frequency. Here, each wireless device of the portion of the plurality of wireless devices is not associated with the events. The method may then include changing a third operation of a first wireless device associated with the events from the first frequency to the second frequency after the events are not active.

Claims

1. A method, comprising:

determining, via a first wireless device of a plurality of wireless devices, a first amount of time remaining before a next scheduled frequency hop time;

determining, via the first wireless device, a second amount of time for a downstream data transmission between the first wireless device and a second wireless device of the plurality of wireless devices to complete;

fragmenting, via the first wireless device, a first data packet of the downstream data transmission into a first data packet fragment and a second data packet fragment when the second amount of time is greater than the first amount of time;

sending, via the first wireless device, the first data packet fragment to the second wireless device using a first frequency;

changing the first frequency of the first wireless device to a second frequency at the next scheduled frequency hop time;

sending, via the first wireless device, the second data packet fragment to the second wireless device at the second frequency;

determining, via the first wireless device, a third amount of time for an upstream data transmission between the first wireless device and a third wireless device of the plurality of wireless devices to complete; and

receiving, via the first wireless device, a third data packet fragment from the second wireless device using the first frequency when the third amount of time is greater than the first amount of time, wherein the third data packet fragment comprises a portion of a second data packet of the upstream data transmission.

2. The method of claim 1, comprising sending, via the first wireless device, the data packet to the second wireless device when the second amount of time is not greater than the first amount of time.

3. The method of claim 1, wherein the second amount of time for the downstream data transmission between the first wireless device and the second wireless device is determined based on a bit rate associated with the downstream data transmission.

4. The method of claim 1, comprising fragmenting the second data packet fragment into a third data packet fragment and a fourth data packet fragment when a third amount of time for transmitting the second data packet fragment between the first wireless device and the second wireless device is greater than a fourth amount of time remaining before the next scheduled frequency hop time.

5. The method of claim 1, comprising sending, via the first wireless device, a synchronization frame to the second wireless device, wherein the synchronization frame comprises the second frequency and the next scheduled frequency hop time.

6. The method of claim 5, comprising sending, via the first wireless device, the synchronization frame to the plurality of wireless devices at the next scheduled frequency hop time.

7. The method of claim 1, comprising generating, via the first wireless device, an association frame comprising routing information that corresponds to the first wireless device with respect to the second wireless device.

8. A system, comprising:

a first wireless device configured to;

determine a first amount of time remaining before a subsequent scheduled frequency hop time;

determine a second amount of time for a downstream data transmission between the first wireless device and a second wireless device to complete;

fragment a first data packet of the downstream data transmission into a first data packet fragment and a second data packet fragment when the second amount of time is greater than the first amount of time; and

send the first data packet fragment to the second wireless device using a first frequency; and

a second wireless device configured to;

determine a third amount of time for an upstream data transmission between the first wireless device and the second wireless device to complete; and

send a third data packet fragment using the first frequency when the third amount of time is greater than the first amount of time, wherein the third data packet fragment comprises a portion of a second data packet of the upstream data transmission.

9. The system of claim 8, wherein the first wireless device is configured to:

change the first frequency to a second frequency at the next scheduled frequency hop time; and

send the second data packet fragment to the second wireless device at the second frequency.

10. The system of claim 8, wherein the first wireless device is configured to send a synchronization frame to the second wireless device, wherein the synchronization frame comprises the second frequency and the next scheduled frequency hop time.

11. The system of claim 8, wherein the first data packet fragment 1s configured to be sent during the first amount of time.

12. The system of claim 8, wherein the first wireless device comprises an access point, a remote, or a router.

13. The system of claim 8, wherein the second wireless device comprises an access point, a remote, or a router.

14. The system of claim 8, wherein the second wireless device is configured to send the second data packet when the third amount of time is not greater than the first amount of time.