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US 8,552,841 B2Granted
Communication method having selectable response signal strength levels
AssigneeInfineon Technologies AG
InventorsPeter Raggam, Martin Buchsbaum, Christian Pontesegger, Martin Liebl, Werner Drexel
Life of this patent
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Abstract
A communication method in a system having a reader and at least one transceiver, the method including the reader selecting a response signal strength level from a plurality of response signal strength levels; and establishing communication between the reader and the at least one transceiver at the selected response signal strength level.
Claims22
A communication method comprising:
- selecting a first non-zero response signal strength level for a first subset of a plurality of transceivers and a second non-zero response signal strength level for a second subset of the plurality of transceivers, by a reader transmitting a signal having a command that identifies the respective selected non-zero response signal strength levels to the subsets of the plurality of transceivers, and operating on a single response communication channel,
- wherein the first non-zero response signal strength level is within a desired communication range of the reader and the second non-zero response signal strength level is not within the desired communication range of the reader, and the first non-zero response signal strength level is greater than the second non-zero response signal strength level;
- and
- establishing communication between the reader and the first subset of the plurality of transceivers at the selected first non-zero response signal strength level,
- wherein the communication method is performed simultaneously with an anti-collision method.
2 more elements
A communication method comprising:
- selecting a first non-zero response signal strength level for a first subset of a plurality of transceivers and a second non-zero response signal level for a second subset of the plurality of transceivers, by a reader transmitting a signal having a command that identifies the respective selected non-zero response signal levels to the subsets of the plurality of transceivers,
- wherein the first non-zero response strength level is within a communication range of the reader and the second non-zero response signal strength level is not within the desired communication range of the reader, and the first non-zero response strength level is greater than the second non-zero response signal strength level;
- and
- establishing communication between the reader and the first subset of the plurality of transceivers at the selected first non-zero response signal strength level,
- wherein the method is performed simultaneously with an anti-collision method, and the selection of the response signal strength levels permits optimization of the anti-collision method.
2 more elements
A reader comprising:
- a processor configured to select a first non-zero response signal strength level for a first subset of a plurality of transceivers and a second non-zero response signal level for a second subset of the plurality of transceivers;
- and
- a transmitter configured to transmit a first signal having a first command that identifies the respective non-zero response signal levels to the subsets of the plurality of respective transceivers,
- wherein the first non-zero response signal strength level is within a desired communication range of the reader and the second non-zero response signal strength level is not within the desired communication range of the reader, the first non-zero response signal strength level being greater than the second non-zero response signal strength level, and
- wherein the reader operates on a single response communication channel and is configured to perform the selection and transmission simultaneously with an anti-collision method.
2 more elements
A communication system comprising:
- a plurality of transceivers;
- and
- a reader configured to select a first non-zero response signal strength level for a first subset of the plurality of transceivers and a second non-zero response signal level for a second subset of the plurality of transceivers by the reader transmitting a signal having a command that identifies the respective selected non-zero response signal strength levels to the subsets of the plurality of transceivers, and to establish communication with the first subset of the plurality of transceivers at the selected first non-zero response signal strength level, wherein the first non-zero response signal strength level is within a desired communication range of the reader and the second non-zero response signal strength level is not within the desired communication range of the reader, the first non-zero response signal strength level being greater than the second non-zero response signal strength level, and wherein the reader operates on a single response communication channel and is configured to perform the selection and transmission simultaneously with an anti-collision method.
Dependencies are inferred from the claim text.