Adaptive power level setting in an ad-hoc wireless network
First Claim
1. A method for adaptive power setting of a first wireless device in an ad-hoc wireless network comprising the steps of:
- initially operating said first wireless device at a first transmission power level, said first transmission power level being selected at a level not expected to facilitate a connection between said first wireless device and additional wireless devices;
increasing the transmission power level, up to a predetermined maximum power level, while incrementally connecting with additional wireless devices; and
terminating said step of increasing the transmission power level, and operating said first wireless device at a current transmission power level, if connection with a particular one of said additional wireless device causes a connectivity constraint to be satisfied, wherein said connectivity constraint is a geometric connectivity constraint, said geometric connectivity constraint is based on an angular distribution between said connected additional wireless devices such that said connectivity constraint is satisfied when said angular distribution is less than or equal to one hundred eight degrees (180°
).
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Accused Products
Abstract
Wireless devices within an ad-hoc wireless network adaptively set their transmission power levels based on locally available information. Initially, each such wireless device sets its transmission power level to a relatively low level, and gradually increases its power level up to a predetermined maximum transmission power level. As the transmission power increases, the wireless device is able to incrementally connect with additional wireless devices located at increasing distances from the wireless device. As the wireless device connects with these additional wireless devices, it checks a connectivity constraint. When the connectivity constraint is satisfied, the wireless device stops increasing its power and operates at its current power level. In one embodiment, the connectivity constraint is a geometric connectivity constraint based on the angular distribution of wireless device connections. When a wireless device detects a change in the network topology, it repeats the power setting steps in order to adapt to the changed topology.
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Citations
9 Claims
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1. A method for adaptive power setting of a first wireless device in an ad-hoc wireless network comprising the steps of:
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initially operating said first wireless device at a first transmission power level, said first transmission power level being selected at a level not expected to facilitate a connection between said first wireless device and additional wireless devices; increasing the transmission power level, up to a predetermined maximum power level, while incrementally connecting with additional wireless devices; and terminating said step of increasing the transmission power level, and operating said first wireless device at a current transmission power level, if connection with a particular one of said additional wireless device causes a connectivity constraint to be satisfied, wherein said connectivity constraint is a geometric connectivity constraint, said geometric connectivity constraint is based on an angular distribution between said connected additional wireless devices such that said connectivity constraint is satisfied when said angular distribution is less than or equal to one hundred eight degrees (180°
). - View Dependent Claims (2, 3)
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4. A wireless device comprising:
a control processor for controlling the operation of the wireless device, said control processor adapted such that the wireless device performs the steps of; initially operating at a first transmission power level, said first transmission power level being selected at a level not expected to facilitate a connection between said wireless device and additional wireless devices; increasing the transmission power level, up to a predetermined maximum power level, while incrementally connecting with additional wireless devices; and terminating said step of increasing the transmission power level, and operating at a current transmission power level, if connection with a particular one of said additional wireless device causes a connectivity constraint to be satisfied, wherein said connectivity constraint is a geometric connectivity constraint, said geometric connectivity constraint is based on an angular distribution between said connected additional wireless devices such that said connectivity constraint is satisfied when said angular distribution is less than or equal to one hundred eight degrees(180°
).- View Dependent Claims (5, 6)
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7. A wireless device for operation in an ad-hoc wireless network comprising:
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means for initially operating said first wireless device at a first transmission power level, said first transmission power level being selected at a level not expected to facilitate a connection between said wireless device and additional wireless devices; means for increasing the transmission power level, up to a predetermined maximum power level, while incrementally connecting with additional wireless devices; and means for terminating said step of increasing the transmission power level, and operating said first wireless device at a current transmission power level, if connection with a particular one of said additional wireless device causes a connectivity constraint to be satisfied, wherein said connectivity constraint is a geometric connectivity constraint, said geometric connectivity constraint is based on an angular distribution between said connected additional wireless devices such that said connectivity constraint is satisfied when said angular distribution is less than or equal to one hundred eight degrees(180°
). - View Dependent Claims (8, 9)
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Specification