Adaptive frequency hopping communication scheme
AssigneeTexas Instruments Incorporated
InventorAnuj Batra
Life of this patent
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Abstract
An adaptive hopping scheme for a wireless communication device (e.g., a Bluetooth-enabled device) takes into account current channel conditions when creating the sequence of hop frequencies. Preferably, the adaptive hopping sequence groups good channels together and bad channels together to minimize instances in which a good channel follows a bad channel and vice versa.
Claims34
A wireless device employing an adaptive frequency hopping scheme, comprising:
- a hop kernel that produces a hop sequence of wireless frequency channels;
- a frequency re-mapper coupled to said hop kernel;
- and
- a partition sequence generator coupled to said frequency re-mapper;
- wherein said partition sequence generator provides a partition sequence to said frequency re-mapper which is used by said frequency re-mapper to determine whether to re-map a channel in said hop sequence to a different channel.
A wireless device employing an adaptive frequency hopping scheme, comprising:
- a hop kernel that produces a hop sequence of wireless frequency channels;
- and
- a frequency re-mapper coupled to said hop kernel and receiving said hop sequence, said frequency re-mapper determines whether to re-map a channel in said hop sequence to a different channel or accept said channel without re-mapping it to produce an adaptive frequency sequence.
A wireless device which communicates with other wireless-capable devices using an adaptive frequency hopping scheme, comprising:
- a hop kernel that produces a hop sequence of wireless frequency channels;
- and
- a frequency re-mapper that receives said hop sequence and produces a plurality of groups of good channels and a second plurality of groups of bad channels, said second plurality disposed among said first plurality.
A method of wireless communications in a wireless network accessible to a plurality of channels, comprising:
- (a) determining which of said channels are good and which are bad, said good channels being usable for communications and said bad channels being unusable for communications;
- (b) grouping said good channels together;
- (c) determining whether any bad channels are needed in said communications;
- (d) if any bad channels are needed, then grouping said bad channels together;
- and
- (e) sending and receiving communications by hopping among said good channels and, if they were needed, hopping among said bad channels.
A master wireless device comprising programmable logic and a wireless radio and an adaptive frequency hopping unit coupled to said programmable logic, wherein said programmable logic determines which of a plurality of accessible channels are good and which are bad and calculates values to be transmitted to a slave wireless device which the slave uses to form an adaptive hopping sequence of channels comprising windows of good channels and windows of bad channels disposed between said windows of good channels.
A partition sequence generator adapted to be coupled to a frequency re-mapper in a wireless device wherein said partition sequence generator generates a partition sequence to be provided to said frequency re-mapper to be used to re-map channels in a hop sequence to different channels.
A frequency re-mapper adapted to be coupled to a partition sequence generator in a wireless device and receive a partition sequence from said partition sequence generator to be used by said frequency re-mapper to re-map channels in a hop sequence to different channels.
Dependencies are inferred from the claim text.