Ultra-wideband location engine for self-shopping devices
Real-time locating systems (RTLS) for self-shopping systems that utilize a dual technology approach. Self-shopping terminals are equipped with a passive or active ultra-wideband (UWB) tag that includes a UWB backscatter module or a UWB transmitter, respectively, as well as a standard wireless communication transceiver, such as a Wi-Fi® or UHF-RFID transceiver, that enables communication over the wireless communication channel. Readers fixed within a shopping environment activate the UWB tag of a selected one of the self-shopping terminals by addressing the self-shopping terminal using the standard wireless communication channel. Once activated, the UWB tag of the selected self-shopping terminal transmits UWB signals which are received by a plurality of the readers and used to determine the location of the UWB tag and hence the location of the self-shopping terminal. A messaging system may send messages to the self-shopping terminal for presentation to the customer on a display of the self-shopping terminal.
1. A method of operation in a self-shopping platform including a plurality of readers fixedly positioned within an environment, the method comprising:
selecting, by at least one processor, one of a plurality of self-shopping terminals associated with the self-shopping platform;
sending, by the at least one processor, an activation command to the selected self-shopping terminal over a first wireless communication channel, the first wireless communication channel utilizing wireless signals other than ultra-wideband signals;
in response to the sending of the activation command, receiving, by a plurality of reader processors of a respective plurality of readers, ultra-wideband signals from an ultra-wideband tag of the selected self-shopping terminal;
determining, by each of the plurality of reader processors of the respective plurality of readers which receive the ultra-wideband signals, a ranging value indicative of a distance between the self-shopping terminal and the respective reader using the received ultra-wideband signals; and
sending, by each of the plurality of reader processors of the respective plurality of readers which receive the ultra-wideband signals, the determined ranging value to a processor-based locator system over at least one data communication channel.
2. The method of claim 1 wherein selecting one of a plurality of self-shopping terminals associated with the self-shopping platform comprises selecting an internet protocol (IP) address of one of the plurality of self-shopping terminals.
3. The method of claim 1 wherein sending an activation command to the selected self-shopping terminal over a first wireless communication channel comprises sending an activation command to the selected self-shopping terminal over at least one of an IEEE 802.11 communication channel or an ultra-high frequency radio frequency identification (UHF-RFID) communication channel.
4. The method of claim 1 wherein receiving ultra-wideband signals from an ultra-wideband tag of the selected self-shopping terminal comprises receiving ultra-wideband signals from an active ultra-wideband transmitter of the ultra-wideband tag.
5. The method of claim 1 wherein receiving ultra-wideband signals from an ultra-wideband tag of the selected self-shopping terminal comprises receiving ultra-wideband signals from an ultra-wideband backscatter circuit of the ultra-wideband tag.
6. The method of claim 1 wherein receiving ultra-wideband signals from an ultra-wideband tag of the selected self-shopping terminal comprises receiving code division multiple access (CDMA) ultra-wideband signals from an ultra-wideband tag of the selected self-shopping terminal.
7. The method of claim 6 wherein receiving CDMA ultra-wideband signals from an ultra-wideband tag of the selected self-shopping terminal comprises receiving CDMA ultra-wideband signals that use a balanced spreading code.
8. The method of claim 1 wherein determining a ranging value indicative of a distance between the self-shopping terminal and the respective reader using the received ultra-wideband signals comprises performing at least one of a time difference of arrival (TDOA) calculation or a time of arrival (TOA) calculation.
9. The method of claim 1 , further comprising:
determining, by the at least one processor of the self-shopping platform, at least a two-dimensional position of the self-shopping terminal based at least in part on the ranging values determined by each of the plurality of reader processors which received the ultra-wideband signals.
10. The method of claim 9 , further comprising:
selecting, by at least one processor, a message based at least in part on the determined position of the self-shopping terminal; and
sending, by the at least one processor, the selected message to the self-shopping terminal over at least one data communication channel.
11. The method of claim 10 wherein sending the selected message to the self-shopping terminal over at least one communication channel comprises sending the selected message to the self-shopping terminal over the first wireless communication channel.
12. The method of claim 1 wherein the self-shopping platform further includes the associated self-shopping terminals, wherein the selected self-shopping terminal being associated with a consumer and having one or more processors, at least one wireless communications transceiver communicatively coupled to the one or more processors of the selected self-shopping terminal, the ultra-wideband tag communicatively coupled to the one or more processors of the selected-self shopping terminal, and at least one non-transitory processor-readable medium communicatively coupled to the one or more processors of the selected self-shopping terminal and which stores at least one of processor-executable instructions or data, the method comprising:
receiving, by the at least one wireless communications transceiver of the selected self-shopping terminal, the activation command over the wireless communication channel, the first wireless communication channel comprising at least one of an IEEE 802.11 communication channel or an ultra-high frequency radio frequency identification (UHF-RFID) communication channel; and
in response to the received activation command, causing, by the one or more processors of the selected self-shopping terminal, a transmission of ultra-wideband signals by an ultra-wideband backscatter circuit of the ultra-wideband tag of the selected self-shopping terminal.
13. The method of claim 12 wherein receiving an activation command comprises receiving an activation command addressed to an internet protocol (IP) address of the selected self-shopping terminal.
14. The method of claim 12 wherein causing a transmission of ultra-wideband signals by the ultra-wideband tag of the selected self-shopping terminal comprises causing a transmission of ultra-wideband signals by an active ultra-wideband transmitter of the ultra-wideband tag.
15. The method of claim 12 wherein causing a transmission of ultra-wideband signals by the ultra-wideband tag of the selected self-shopping terminal comprises causing a transmission of code division multiple access (CDMA) ultra-wideband signals from the ultra-wideband tag of the selected self-shopping terminal.
16. The method of claim 15 wherein causing a transmission of CDMA ultra-wideband signals by the ultra-wideband tag of the selected self-shopping terminal comprises causing a transmission of CDMA ultra-wideband signals that use a balanced spreading code.
17. The method of claim 12 , further comprising:
receiving, by the at least one wireless communications transceiver of the selected self-shopping terminal, a marketing message from at least one of the plurality of readers over the first wireless communication channel.
18. The method of claim 1 , further comprising:
subsequent to the selecting of one of a plurality of self-shopping terminals associated with the self-shopping platform, selecting, by at least one processor, another self-shopping terminal of the plurality of self-shopping terminals associated with the self-shopping platform;
sending, by the at least one processor, an activation command to the selected other self-shopping terminal over the first wireless communication channel, the first wireless communication channel utilizing wireless signals other than ultra-wideband signals;
in response to the sending of the activation command to the selected other self-shopping terminal, receiving, by the plurality of reader processors of the respective plurality of readers, ultra-wideband signals from an ultra-wideband tag of the selected other self-shopping terminal; and
determining, by each of the plurality of reader processors of the respective plurality of readers which receive the ultra-wideband signals from the ultra-wideband tag of the selected other self-shopping terminal, a ranging value indicative of a distance between the other self-shopping terminal and the respective reader using the received other ultra-wideband signals.
19. A self-shopping system, comprising:
a processor-based locator system;
a plurality of readers fixedly positioned within a shopping environment, each of the plurality of readers coupled to the processor-based locator system over at least one data communication channel and comprising:
at least one reader processor;
a first wireless communication transceiver communicatively coupled to the at least one reader processor, the wireless communications transceiver including a first transmitter that sends data over a first wireless communication channel and a first receiver that receives data over the first wireless communication channel, the first communication channel utilizing signals other than ultra-wideband signals;
a second receiver communicatively coupled to the at least one reader processor, the second receiver receives ultra-wideband signals; and
at least one nontransitory processor-readable medium communicatively coupled to the at least one reader processor and which stores at least one of processor-executable instructions or data that when executed by the at least one reader processor, cause the at least one reader processor to:
send, by the first transmitter, an activation command to a selected one of a plurality of self-shopping terminals over the first wireless communication channel;
receive, by the second receiver, ultra-wideband signals from an ultra-wideband tag of the selected self-shopping terminal;
determine a ranging value indicative of a distance between the self-shopping terminal and the respective reader using the received ultra-wideband signals; and
send the respective determined ranging value to the processor-based locator system over the at least one data communication channel.
20. The self-shopping system of claim 19 wherein the at least one reader processor:
selects an internet protocol (IP) address of one of the plurality of self-shopping terminals.
21. The self-shopping system of claim 19 wherein the at least one reader processor:
sends an activation command to the selected self-shopping terminal over at least one of an IEEE 802.11 communication channel or an ultra-high frequency radio frequency identification (UHF-RFID) communication channel.
22. The self-shopping system of claim 19 wherein the at least one reader processor:
receives, by the second receiver, ultra-wideband signals from an active ultra-wideband transmitter of the ultra-wideband tag.
23. The self-shopping system of claim 19 wherein the at least one reader processor:
receives, by the second receiver, ultra-wideband signals from an ultra-wideband backscatter circuit of the ultra-wideband tag.
24. The self-shopping system of claim 19 wherein the at least one reader processor:
receives code division multiple access (CDMA) ultra-wideband signals from an ultra-wideband tag of the selected self-shopping terminal.
25. The self-shopping system of claim 24 wherein the CDMA ultra-wideband signals received from an ultra-wideband tag comprise CDMA ultra-wideband signals that use a balanced spreading code.
26. The self-shopping system of claim 19 wherein the at least one reader processor:
performs at least one of a time difference of arrival (TDOA) calculation or a time of arrival (TOA) calculation.
27. The self-shopping system of claim 19 wherein the processor-based locator system determines at least a two-dimensional position of the self-shopping terminal based at least in part on the ranging values determined by each of the plurality of reader processors which received the ultra-wideband signals.
28. The self-shopping system of claim 27 , further comprising:
a processor-based messaging system that select a message based at least in part on the determined position of the self-shopping terminal, and sends the selected message to the self-shopping terminal over at least one data communication channel.
29. The self-shopping system of claim 28 wherein the processor-based messaging system sends the selected message to the self-shopping terminal over the first wireless communication channel.
30. The self-shopping system of claim 19 , further comprising, the selected self-shopping terminal, wherein the selected self-shopping terminal comprising: one or more processors;
one or more wireless communications transceivers communicatively coupled to the one or more processors of the selected-self shopping terminal;
the ultra-wideband tag communicatively coupled to the one or more processors of the selected self-shopping terminal, the ultra-wideband tag comprising an ultra-wideband backscatter circuit; and
one or more non-transitory processor-readable media communicatively coupled to the one or more processors of the selected self-shopping terminal and which stores one or more of processor-executable instructions or data that when executed by the one or more processors of the selected self-shopping terminal, cause the one or more processors of the selected self-shopping terminal to:
receive, by the one or more wireless communications transceivers of the selected-self shopping terminal, the activation command over the wireless communication channel, the first wireless communication channel comprising at least one of an IEEE 802.11 communication channel or an ultra-high frequency radio frequency identification (UHF-RFID) communication channel; and in response to the received activation command, cause a transmission of ultra-wideband signals by the ultra-wideband backscatter circuit of the ultra-wideband tag of the selected self-shopping terminal.
31. The self-shopping system of claim 30 wherein the one or more processors of the selected self-shopping terminal:
receives, by the one or more wireless communications transceivers of the selected self-shopping terminal, an activation command addressed to an internet protocol (IP) address of the selected self-shopping terminal.
32. The self-shopping system of claim 30 wherein the ultra-wideband tag comprises an active ultra-wideband transmitter that transmits the ultra-wideband signals.
33. The self-shopping system of claim 30 wherein the ultra-wideband tag transmits code division multiple access (CDMA) ultra-wideband signals.
34. The self-shopping system of claim 33 wherein the ultra-wideband tag transmits code division multiple access (CDMA) ultra-wideband signals that use a balanced spreading code.
35. The self-shopping system of claim 30 wherein the self-shopping terminal comprises one of a smartphone, a tablet computer or a notebook computer.
36. The self-shopping system of claim 30 wherein the one or more processors of the selected self-shopping terminal:
receives, by the one or more wireless communications transceivers of the selected self-shopping terminal, a marketing message from at least one of the plurality of readers over the first wireless communication channel.
37. The self-shopping system of claim 19 wherein the at least one reader processor, subsequent to sending an activation command to a selected one of a plurality of self-shopping terminals over the first wireless communication channel:
sends, by the first transmitter, an activation command to another selected self-shopping terminal of the plurality of self-shopping terminals over the first wireless communication channel;
receives, by the second receiver, ultra-wideband signals from an ultra-wideband tag of the other selected self-shopping terminal; and
determines a ranging value indicative of a distance between the other self-shopping terminal and the respective reader using the received ultra-wideband signals from the ultra-wideband tag of the other selected self-shopping terminal.