Control of short range RF communication
First Claim
1. A method for controlling low power radio frequency activity of terminals, said method comprising the steps of:
- transmitting a radio frequency signal from a first terminal communicating with a second terminal, the signal including a transmission indication;
receiving the transmission indication by the second terminal sequentially a multiple number of times, wherein the transmission indication is a radio frequency transmission authorization indication included in control information which is used to control whether the second terminal is activated to transmit or receive subsequent radio transmissions; and
comparing the multiple received transmission indications with predetermined indication values; and
wherein in response to the comparison showing that a predetermined number of satisfactory transmission indications have been received by the second terminal, the second terminal commences the subsequent radio transmissions.
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Accused Products
Abstract
A method of and a system for controlling low power radio frequency activity of terminals, including a method of selecting and activating a wireless terminal. A signal, including a transmission indication, is transmitted by a first terminal. A second terminal receives the signal a number of times and compares the received transmission indications with predetermined indication values. When the comparison shows that a predetermined number of satisfactory transmission indications have been received by the second terminal, the second terminal commences transmission. The transmission indication can be messages having tail portions with a preselected set of states.
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Citations
72 Claims
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1. A method for controlling low power radio frequency activity of terminals, said method comprising the steps of:
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transmitting a radio frequency signal from a first terminal communicating with a second terminal, the signal including a transmission indication;
receiving the transmission indication by the second terminal sequentially a multiple number of times, wherein the transmission indication is a radio frequency transmission authorization indication included in control information which is used to control whether the second terminal is activated to transmit or receive subsequent radio transmissions; and
comparing the multiple received transmission indications with predetermined indication values; and
whereinin response to the comparison showing that a predetermined number of satisfactory transmission indications have been received by the second terminal, the second terminal commences the subsequent radio transmissions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for selecting and activating a wireless terminal, comprising the steps of delivering a series of messages to the wireless terminal, each message including a payload portion in response to which a particular terminal is selected and a tail portion including first and second states, each state being indicative of a corresponding payload condition, the method comprising:
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inverting the tail portion for at least a first one of said series of messages with respect to the tail portion for another one of said series of messages, the wireless terminal being activated in response to said inversion including a first set of states each being indicative of a corresponding payload condition; and
inverting said first set of states for at least one of said series of messages to provide a second set of states, such that said previously selected terminal is activated in response to changes in said sets.
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15. A method for controlling low power radio frequency activity of terminals, said method comprising the steps of:
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transmitting inquiry signals over a lower power radio frequency communication channel by a first terminal, each of the inquiry signals including a dedicated transmission authorization indication;
receiving the inquiry signals by a second terminal a multiple number of times, wherein received transmission authorization indications a counted by the second terminal;
comparing the counted received transmission authorization indications with predetermined indication conditions for low power radio frequency communication; and
in response the comparison indicating that the predetermined conditions for commencing low power radio frequency communication are satisfied, commencing low power radio frequency transmission or reception by the second terminal. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A system for controlling low power radio frequency activity of terminals, comprising:
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a first and a second terminal with the first and second terminals being in communication; and
whereina radio frequency signals is transmitted from the first terminal communicating with the second terminal, the signal including a transmission indication, the transmission indication is received by the second terminal sequentially a multiple number of times, wherein the transmission indication is a radio frequency transmission authorization indication included in control information which is used to control whether the second terminal is activated to transmit or receive subsequent radio transmissions, the multiple received transmission indications are compared with predetermined indication value, in response to the comparison showing that a predetermined number of satisfactory transmission indications have been received by the second terminal and the second terminal commences the subsequent radio transmissions. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A system for selecting and activating a wireless terminal, wherein:
a series of messages are delivered to the wireless terminal, each message including a payload portion in response to which a particular terminal is selected and a tail portion including first and second states, each state being indicative of a corresponding payload condition, the tail portion is inverted for at least a first one of said series of messages with respect to the tail portion for another one of said series of messages, the wireless terminal being activated in response to said inversion including a first set of states each being indicative of a corresponding payload condition; and
said first set of states for at least one of said series of messages is inverted to provide a second set of states, such that said previously selected terminal is activated in response to changes in said sets.
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42. A system comprising:
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first and second terminals connected by a low power radio frequency communication channel for controlling low power radio frequency activity of the first and second terminals; and
whereininquiry signals are transmitted over the lower power radio frequency communication channel by the first terminal, each of the inquiry signals including a dedicated transmission authorization indication, the inquiry signals are received by the second terminal a multiple number of times, wherein received transmission authorization indications are counted by the second terminal, the counted received transmission authorization indications are compared with predetermined indication conditions for low power radio frequency communication, and in response to the comparison indicating that the predetermined conditions for commencing low power radio frequency communication are satisfied and commencing low power radio frequency transmission or reception by the second terminal. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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55. In a system for controlling low power radio frequency activity of first and second terminals, the second terminal comprising:
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a transceiver; and
wherein a radio frequency signal is transmitted from the first terminal to the second terminal, the signal including a transmission indication, the transmission indication being received by the second terminal sequentially a multiple number of times, wherein the transmission indication is a radio frequency transmission authorization indication included in control information which is used to control whether the second terminal is activated to transmit or receive subsequent radio transmissions, the multiple received transmission indications are compared with predetermined indication values, and in response to the comparison showing that a predetermined number of satisfactory transmission indications have been received by the second terminal and the second terminal commences the subsequent radio transmissions. - View Dependent Claims (56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66)
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67. A terminal, comprising:
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a transceiver;
means for receiving a radio frequency signal via the transceiver, the signal including a transmission indication that is received sequentially a multiple number of times, wherein the transmission indication is a radio frequency transmission authorization indication included in control information which is used to control whether the terminal is activated to transmit or receive subsequent radio transmissions;
means for comparing the multiple received transmission indications with a predetermined indication value; and
means for commencing subsequent radio transmission via the transceiver in response to a comparison showing that a predetermined number of satisfactory transmission indications have been received by the terminal. - View Dependent Claims (68, 69, 70, 71, 72)
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Specification