Delay calculation in wireless systems
First Claim
1. A wireless device network comprises:
- at least one unsynchronized wireless device that shares a radio frequency spectrum in a time division multiple access based wireless system, and wherein the at least one unsynchronized wireless device includes a device processor; and
a cognitive master in communication with the at least one unsynchronized wireless device wherein the cognitive master includes a cognitive master processor;
wherein the cognitive master processor is configured to;
determine a number of time slots required for the cognitive master to transmit a message to the at least one unsynchronized wireless device and to receive a response from the at least one unsynchronized wireless device, wherein each time slot is a portion of a radio frequency spectrum over a frame period;
when the number of time slots required are consecutively available within the radio frequency spectrum, broadcast an announcement message indicating start of discovery of at least one unsynchronized wireless device;
wherein the device processor is configured to;
generate a response message, wherein the response message includes a device ID to identify the at least one unsynchronized wireless device; and
broadcast the response message to the cognitive master;
wherein the cognitive master processor is further configured to;
generate a correction factor based on at least one of a cognitive master transmit time and a cognitive master received time, wherein the cognitive master transmit time is the time at which the cognitive master transmitted the announcement message, and wherein the cognitive master received time is the time at which the cognitive master received the response message; and
broadcast the correction factor to the unsynchronized wireless device based on the device ID.
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Accused Products
Abstract
A wireless device network comprises: an unsynchronized wireless device in a time division multiple access based system; and a cognitive master in communication with the device, wherein the master processor is configured to: determine a number of time slots required for the master to transmit a message to and receive a response from the device, each time slot is a portion of a radio frequency spectrum over a frame period; when the number of time slots required are consecutively available, broadcast an announcement message indicating start of discovery of the unsynchronized device; wherein the device processor is configured to: generate a response message including a device ID; and broadcast the response message to the master; wherein the master processor is configured to: generate a correction factor based on at least one of a master transmit time and a master received time; and broadcast the correction factor to the device.
62 Citations
20 Claims
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1. A wireless device network comprises:
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at least one unsynchronized wireless device that shares a radio frequency spectrum in a time division multiple access based wireless system, and wherein the at least one unsynchronized wireless device includes a device processor; and a cognitive master in communication with the at least one unsynchronized wireless device wherein the cognitive master includes a cognitive master processor; wherein the cognitive master processor is configured to; determine a number of time slots required for the cognitive master to transmit a message to the at least one unsynchronized wireless device and to receive a response from the at least one unsynchronized wireless device, wherein each time slot is a portion of a radio frequency spectrum over a frame period; when the number of time slots required are consecutively available within the radio frequency spectrum, broadcast an announcement message indicating start of discovery of at least one unsynchronized wireless device; wherein the device processor is configured to; generate a response message, wherein the response message includes a device ID to identify the at least one unsynchronized wireless device; and broadcast the response message to the cognitive master; wherein the cognitive master processor is further configured to; generate a correction factor based on at least one of a cognitive master transmit time and a cognitive master received time, wherein the cognitive master transmit time is the time at which the cognitive master transmitted the announcement message, and wherein the cognitive master received time is the time at which the cognitive master received the response message; and broadcast the correction factor to the unsynchronized wireless device based on the device ID. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of synchronizing a device in a wireless device system, the method comprising:
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determining a number of time slots required for the cognitive master to transmit a message to the at least one unsynchronized wireless device and to receive a response from the at least one unsynchronized wireless device, wherein each time slot is a portion of a radio frequency spectrum over a frame period; when the number of time slots required are consecutively available within the radio frequency spectrum, generating an announcement message to indicate the start of discovery process for at least one unsynchronized wireless device; broadcasting the announcement message to the at least one unsynchronized wireless device; receiving a response message from the at least one unsynchronized wireless device, wherein the response message includes at least a device ID identifying the at least one unsynchronized wireless device; generating a correction factor based on at least one of a cognitive master transmit time and a cognitive master received time, wherein the cognitive master transmit time is the time at which the cognitive master transmitted the announcement message, and wherein the cognitive master received time is the time at which the cognitive master received the response message; and broadcasting the correction factor to the unsynchronized wireless device based on the device ID. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method of synchronizing a device in a wireless device system, the method comprising:
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receiving an announcement message from a cognitive master indicating the start of discovery process for the device, wherein receiving the announcement message indicates that a number of time slots are consecutively available within a radio frequency spectrum to respond to the announcement message, wherein each time slot is a portion of a radio frequency spectrum over a frame period; generating a response message in response to the announcement message, the response message including a device ID identifying the at least one unsynchronized wireless device; broadcasting the response message to the cognitive master; receiving a correction factor based on at least one of a cognitive master transmit time and a cognitive master received time, wherein the cognitive master transmit time is the time at which the cognitive master transmitted the announcement message, and wherein the cognitive master received time is the time at which the cognitive master received the response message; and applying the correction factor to synchronize the device with the cognitive master. - View Dependent Claims (17, 18, 19, 20)
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Specification