Approach For Managing The Use Of Communications Channels Based On Performance

• US 20150043617A1
• Filed: 10/27/2014
• Published: 02/12/2015
• Est. Priority Date: 01/25/2001
• Status: Active Grant

• Current Assignee: Bandspeed, LLC
• Original Assignee: Bandspeed, Inc. (Broadcom, Inc.)
• Inventors: Gan, Hongbing, Treister, Bijan, Skafidas, Efstratios
• Granted Patent: US 9,379,769 B2
• Time in Patent Office: Days
• US Class Current: 375/133
• CPC Class Codes: H04B 1/7136 Arrangements for generation of hop frequencies, e.g. using a bank of frequency sources, using continuous tuning or using a transform
• CPC Class Codes: H04B 1/715 Interference-related aspects
• CPC Class Codes: H04B 2001/7154 with means for preventing interference
• CPC Class Codes: H04L 2101/622 Layer-2 addresses, e.g. medium access control [MAC] addresses
• CPC Class Codes: H04L 5/006 Quality of the received signal, e.g. BER, SNR, water filling
• CPC Class Codes: H04L 69/28 Timers or timing mechanisms used in protocols
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 84/20 Master-slave selection or change arrangements

Abstract

An approach for selecting sets of communications channels involves determining the performance of communications channels. A set of channels is selected based on the results of performance testing and specified criteria. The participant generates data that identifies the selected set of channels and provides that data to other participants of the communications network. The participants communicate over the set of channels, such as by using a frequency hopping protocol. When a specified time expires or monitoring of the performance of the channel set identifies poor performance of the set of channels, the participant selects another set of channels for use in communications based on additional performance testing. By selecting channels based on the initial performance testing and performance monitoring, the communications network adaptively avoids channels with poor performance.

Claims

1. A wireless communications device for use in a frequency hopping communication system, the wireless communications device comprising:

one or more processors; and

one or more memories storing instructions which, when processed by the one or more processors, cause the wireless communications device to perform;

monitoring a plurality of communication channels, the plurality of communication channels used by the wireless communications device for communicating, according to a frequency hopping sequence, with another wireless communications device in the frequency hopping communication system;

based at least on results of the monitoring, classifying one or more communications channels of the plurality of communication channels as good and classifying one or more communications channels of the plurality of communication channels as bad;

transmitting information to the other wireless communications device identifying at least one of;

a) the one or more communication channels classified as good, or b) the one or more communication channels classified as bad;

communicating, according to a frequency hopping sequence, with the other wireless communications device over the one or more communication channels classified as good while avoiding communicating with the other wireless communications device over the one or more communication channels classified as bad.

2. The wireless communications device of claim 1, wherein the instructions stored in the memory are further configured to cause the device, when processed by the one or more processors, to perform the steps of:

receiving, from the other device, a vote for each of one or more communication channels of the plurality communication channels on whether or not to use the communication channel for frequency hopping communications; and

based at least on results of the monitoring and the one or more votes from the other wireless communications device, classifying one or more communications channels of the plurality of communication channels as good and classifying one or more communications channels of the plurality of communication channels as bad.

3. The wireless communications device of claim 1, wherein the instructions stored in the memory are further configured to cause the wireless communications device, when processed by the one or more processors, to perform transmitting information to the other wireless communications device identifying the one or more communications channels of the one or more communication channels classified as good or the one or more communications channels of the one or more communication channels classified as bad.

4. The wireless communications device of claim 1, wherein monitoring the plurality of communication channels comprises testing each communication channel of the plurality of communication channels multiple times.

5. The wireless communications device of claim 1, wherein the results of the monitoring on which the classifying is based comprises, for each communications channel of the plurality of communication channels, one or more of a number of error bits for the communication channel or a received signal strength indication (RSSI) for the communication channel.

6. The wireless communications device of claim 1, wherein the instructions stored in the memory are further configured to cause the wireless communications device, when processed by the one or more processors, to perform, based on results of monitoring the one or more communication channels classified as good while communicating, according to a frequency hopping sequence, with the other wireless communications device over the one or more communication channels classified as good while avoiding communicating with the other wireless communications device over the one or more communication channels classified as bad, classifying one or more communications channels of the one or more communication channels classified as good as bad.

7. The wireless communications device of claim 6, wherein the instructions stored in the memory are further configured to cause the wireless communications device, when processed by the one or more processors, to perform the step of based at least on classifying the one or more communications channels of the one or more communication channels classified as good as bad, transmitting a request to the other wireless communications device to switch back to communicating over the plurality of communication channels.

8. The wireless communications device of claim 1, wherein the instructions stored in the memory are further configured to cause the wireless communications device, when processed by the one or more processors, to perform, based on results of monitoring the one or more communication channels classified as good while communicating, according to a frequency hopping sequence, with the other wireless communications device over the one or more communication channels classified as good, while avoiding communicating with the other wireless communications device over the one or more communication channels classified as bad, classifying one or more communications channels of the one or more communication channels classified as good as still good.

9. The wireless communications device of claim 1, wherein the instructions stored in the memory are further configured to cause the wireless communications device, when processed by the one or more processors, to perform, responsive to detecting expiration of a timer, transmitting a request to the other wireless communications device to switch back to communicating over the plurality of communication channels.

10. A wireless communications device for use in a frequency hopping communication system, the wireless communications device comprising:

means for monitoring a plurality of communication channels, the plurality of communication channels used for communicating, according to a frequency hopping sequence, with another wireless communications device in the frequency hopping communication system;

means for classifying one or more communications channels of the plurality of communication channels as good and classifying one or more communications channels of the plurality of communication channels as bad;

means for transmitting information to the other wireless communications device identifying at least one of;

a) the one or more communication channels classified as good, or b) the one or more communication channels classified as bad;

means for communicating, according to a frequency hopping sequence, with the other wireless communications device over the one or more communication channels classified as good, while avoiding communicating with the other wireless communications device over the one or more communication channels classified as bad.

11. One or more non-transitory computer-readable media storing instructions which, when processed by one or more processors, cause a master wireless communications device to perform:

monitoring a plurality of communication channels, the plurality of communication channels used by the master wireless communications device for communicating, according to a frequency hopping sequence, with a slave wireless communications device in the frequency hopping communication system;

based at least on results of the monitoring, classifying one or more communications channels of the plurality of communication channels as good and classifying one or more communications channels of the plurality of communication channels as bad;

transmitting information to the slave wireless communications device identifying at least one of;

a) the one or more communication channels classified as good, or b) the one or more communication channels classified as bad;

communicating, according to a frequency hopping sequence, with the slave wireless communications device over the one or more communication channels classified as good while avoiding communicating with the slave wireless communications device over the one or more communication channels classified as bad.

12. The one or more non-transitory computer-readable media of claim 11, further storing additional instructions which, when processed by the one or more processors cause:

receiving, from the slave wireless communications device, a vote for each of one or more communication channels of the plurality communication channels on whether or not to use the communication channel for frequency hopping communications; and

based at least on results of the monitoring and the one or more votes from the slave wireless communications device, classifying one or more communications channels of the plurality of communication channels as good and classifying one or more communications channels of the plurality of communication channels as bad.

13. The one or more non-transitory computer-readable media of claim 11, further storing additional instructions which, when processed by the one or more processors cause transmitting information to the slave wireless communications device identifying the one or more communications channels of the one or more communication channels classified as good or the one or more communications channels of the one or more communication channels classified as bad.

14. The one or more non-transitory computer-readable media of claim 11, wherein monitoring the plurality of communication channels comprises testing each communication channel of the plurality of communication channels multiple times.

15. The one or more non-transitory computer-readable media of claim 11, wherein the results of the monitoring on which the classifying is based comprises, for each communications channel of the plurality of communication channels, one or more of a number of error bits for the communication channel or a received signal strength indication (RSSI) for the communication channel.

16. The one or more non-transitory computer-readable media of claim 11, further storing additional instructions which, when processed by the one or more processors cause, based on results of monitoring the one or more communication channels classified as good while communicating, according to a frequency hopping sequence, with the slave wireless communications device over the one or more communication channels classified as good, while avoiding communicating with the slave wireless communications device over the one or more communication channels classified as bad, classifying one or more communications channels of the one or more communication channels classified as good as bad.

17. The one or more non-transitory computer-readable media of claim 16, further storing additional instructions which, when processed by the one or more processors cause, based at least on classifying the one or more communications channels of the one or more communication channels classified as good as bad, transmitting a request to the slave wireless communications device to switch back to communicating over the plurality of communication channels.

18. The one or more non-transitory computer-readable media of claim 11, further storing additional instructions which, when processed by the one or more processors cause, based on results of monitoring the one or more communication channels classified as good while communicating, according to a frequency hopping sequence, with the slave wireless communications device over the one or more communication channels classified as good, while avoiding communicating with the slave wireless communications device over the one or more communication channels classified as bad, classifying one or more communications channels of the one or more communication channels classified as good as still good.

19. The one or more non-transitory computer-readable media of claim 11, further storing additional instructions which, when processed by the one or more processors cause, responsive to detecting expiration of a timer, transmitting a request to the slave wireless communications device to switch back to communicating over the plurality of communication channels.

20. A method performed by a master wireless communications device in a frequency hopping communication system, the method comprising:

monitoring a plurality of communication channels, the plurality of communication channels used by the master wireless communications device for communicating, according to a frequency hopping sequence, with a slave wireless communications device in the frequency hopping communication system;

based at least on results of the monitoring, classifying one or more communications channels of the plurality of communication channels as good and classifying one or more communications channels of the plurality of communication channels as bad;

transmitting information to the slave wireless communications device identifying at least one of;

a) the one or more communication channels classified as good, or b) the one or more communication channels classified as bad;

communicating, according to a frequency hopping sequence, with the slave wireless communications device over the one or more communication channels classified as good while avoiding communicating with the slave wireless communications device over the one or more communication channels classified as bad.

21. The method of claim 20, further comprising:

receiving, from the slave wireless communications device, a vote for each of one or more communication channels of the plurality communication channels on whether or not to use the communication channel for frequency hopping communications; and

based at least on results of the monitoring and the one or more votes from the slave wireless communications device, classifying one or more communications channels of the plurality of communication channels as good and classifying one or more communications channels of the plurality of communication channels as bad.

22. The method of claim 20, further comprising transmitting information to the slave wireless communications device identifying the one or more communications channels of the one or more communication channels classified as good or the one or more communications channels of the one or more communication channels classified as bad.

23. The method of claim 20, wherein monitoring the plurality of communication channels comprises testing each communication channel of the plurality of communication channels multiple times.

24. The method of claim 20, wherein the results of the monitoring on which the classifying is based comprises, for each communications channel of the plurality of communication channels, one or more of a number of error bits for the communication channel or a received signal strength indication (RSSI) for the communication channel.

25. The method of claim 20, further comprising, based on results of monitoring the one or more communication channels classified as good while communicating, according to a frequency hopping sequence, with the slave wireless communications device over the one or more communication channels classified as good, while avoiding communicating with the slave wireless communications device over the one or more communication channels classified as bad, classifying one or more communications channels of the one or more communication channels classified as good as bad.

26. The method of claim 25, further comprising, based at least on classifying the one or more communications channels of the one or more communication channels classified as good as bad, transmitting a request to the slave wireless communications device to switch back to communicating over the plurality of communication channels.

27. The method of claim 20, further comprising, based on results of monitoring the one or more communication channels classified as good while communicating, according to a frequency hopping sequence, with the slave wireless communications device over the one or more communication channels classified as good, while avoiding communicating with the slave wireless communications device over the one or more communication channels classified as bad, classifying one or more communications channels of the one or more communication channels classified as good as still good.

28. The method of claim 20, further comprising, responsive to detecting expiration of a timer, transmitting a request to the slave wireless communications device to switch back to communicating over the plurality of communication channels.