Adaptive transmission channel allocation method and system for ISM and unlicensed frequency bands
First Claim
1. A method for establishing a connection link between a master device and a plurality of slave devices in a communications network having a plurality of frequency channels within a radio frequency band, wherein the connection links between the master device and the slave devices are capable of being carried out in a frequency-hopping fashion, said method comprising the steps of:
- sending a link request to the master device requesting establishment of a non-frequency-hopping connection link between the master device and at least one of the slave devices;
establishing the non-frequency-hopping connection link as requested if the master device is able to select a communication channel for said non-frequency-hopping connection link; and
establishing or maintaining the connection link in the frequency-hopping fashion if the master device is unable to select the communication channel for said non-frequency-hopping connection link.
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Accused Products
Abstract
A method and system for establishing a connection link between a master device and a plurality of slave devices in a communications network having a plurality of frequency channels within a radio frequency band known as the unlicensed ISM band, wherein the connection links between the master device and the slave devices are capable of being carried out in a frequency-hopping fashion. The method comprises the steps of sending a link request to the master device requesting establishment of a non-frequency-hopping connection link between the master device and a slave device; establishing the non-frequency-hopping connection link as requested if the master device is able to select a communication channel for such a connection link; and establishing or maintaining the connection link in the frequency-hopping fashion if the master device is unable to select such a communication channel. In order to establish the non-frequency-hopping connection link, channel conditions including the carrier power of the channel and the interference and noise levels adversely affecting the connection link are measured.
68 Citations
19 Claims
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1. A method for establishing a connection link between a master device and a plurality of slave devices in a communications network having a plurality of frequency channels within a radio frequency band, wherein the connection links between the master device and the slave devices are capable of being carried out in a frequency-hopping fashion, said method comprising the steps of:
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sending a link request to the master device requesting establishment of a non-frequency-hopping connection link between the master device and at least one of the slave devices;
establishing the non-frequency-hopping connection link as requested if the master device is able to select a communication channel for said non-frequency-hopping connection link; and
establishing or maintaining the connection link in the frequency-hopping fashion if the master device is unable to select the communication channel for said non-frequency-hopping connection link. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for the adaptive allocation of transmission channels in order to establishing a connection link between a master device and at least one slave device in a communications network having a plurality of frequency channels within a radio frequency band, wherein the connection link between the master device and the slave device is capable of being carried out in a frequency-hopping fashion, said system comprising:
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a mechanism for the slave device to request the master device to allocate a channel for a connection link in a non-frequency-hopping fashion;
a mechanism for the master to determine whether it is able to allocate the requested channel;
a mechanism to establish the non-frequency-hopping connection link between the master device and the requesting slave device on the allocated channel if the master is able to allocate the requested channel; and
a mechanism to establish or maintain a frequency-hopping connection link between the master device and the requesting slave device if the master is unable to allocate the requested channel. - View Dependent Claims (15, 16)
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17. A communication device in a communications network having a further communication device and a plurality of frequency channels with a radio frequency band for establishing a connection link between the communication device and a further communication device, wherein the connection link between the communication device and the further communication device is capable of being carried out in a frequency-hopping fashion, said communication device comprising:
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a mechanism for the communication device to request the further communication device to allocate a channel for a connection link in a non-frequency-hopping fashion;
a mechanism to establish the non-frequency-hopping connection link between the communication device and the further communication device on the allocated channel if the further communication device is able to allocate the requested channel; and
a mechanism to establish or maintain a frequency-hopping connection link between the communication device and the further communication device if the further communication device is unable to allocate the requested channel. - View Dependent Claims (18, 19)
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Specification