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US 12,574,716 B2Granted
Method and device for device discovery using UWB
AssigneeSamsung Electronics Co., Ltd.
InventorsJihye Lee, Kangjin Yoon
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Abstract
The disclosure relates to a method and a device for device discovery using ultra-wideband (UWB). A method for a first UWB includes transmitting a control message including information on a contention window for contention-based access by using a UWB communication scheme; receiving a scheduling request message for scheduling-based access, in a slot in the contention window from a second UWB device by using the UWB communication scheme; and configuring a scheduled slot for the second UWB device, based on the scheduling request message. The scheduling request message may be used for in-band device discovery.
Claims22
A method of a first ultra-wideband (UWB) device, the method comprising:
- transmitting, by using a Bluetooth low energy (BLE) communication scheme, a BLE advertising packet comprising an in-band discovery indicator indicating whether a UWB-based device discovery is used or a BLE-based device discovery is used, wherein when the in-band discovery indicator indicates the UWB-based device discovery is used, the BLE advertising packet comprises UWB channel information, a UWB preamble code index, and a UWB physical layer parameter set;
- transmitting a control message comprising first information on a contention window for contention-based access by using a UWB communication scheme, second information on a ranging device management list for a contention free window, and third information related to a size of the ranging device management list, the second information including an address for at least one UWB device;
- and
- receiving, from a second UWB device, a ranging response message, in a slot in the contention window by using the UWB communication scheme,
- wherein the ranging response message includes an address of the second UWB device and request of allocation of a ranging slot in the contention free window,
- wherein the address of the second UWB device is not included in the ranging device management list,
- wherein the first information indicates a number of ranging slots used in the contention window, and
- wherein a slot in which the control message is transmitted and slots in the contention window are included together in a ranging period.
5 more elements
A method of a second ultra-wideband (UWB) device, the method comprising:
- receiving, by using a Bluetooth low energy (BLE) communication scheme, a BLE advertising packet comprising an in-band discovery indicator indicating whether a UWB-based device discovery is used or a BLE-based device discovery is used, wherein when the in-band discovery indicator indicates the UWB-based device discovery is used, the BLE advertising packet comprises UWB channel information, a UWB preamble code index, and a UWB physical layer parameter set;
- receiving, from a first UWB device, a control message comprising first information on a contention window for contention-based access by using a UWB communication scheme, second information on a ranging device management list for a contention free window, and third information related to a size of the ranging device management list, the second information including an address for at least one UWB device;
- and
- transmitting, to the first UWB device, a ranging response message, in a slot in the contention window by using the UWB communication scheme,
- wherein the ranging response message includes an address of the second UWB device and request of allocation of a ranging slot in the contention free window,
- wherein the address of the second UWB device is not included in the ranging device management list,
- wherein the first information indicates a number of ranging slots used in the contention window, and
- wherein a slot in which the control message is transmitted and slots in the contention window are included together in a ranging period.
5 more elements
A first ultra-wideband (UWB) device comprising:
- a transceiver;
- and
- a controller configured to:
- transmit, by using a Bluetooth low energy (BLE) communication scheme, a BLE advertising packet comprising an in-band discovery indicator indicating whether a UWB-based device discovery is used or a BLE-based device discovery is used, wherein when the in-band discovery indicator indicates the UWB-based device discovery is used, the BLE advertising packet comprises UWB channel information, a UWB preamble code index, and a UWB physical layer parameter set;
- transmit a control message comprising first information on a contention window for contention-based access by using a UWB communication scheme, second information on a ranging device management list for a contention free window, and third information related to a size of the ranging device management list, the second information including an address for at least one UWB device;
- and
- receive, from a second UWB device, a ranging response message, in a slot in the contention window by using the UWB communication scheme,
- wherein the ranging response message includes an address of the second UWB device and request of allocation of a ranging slot in the contention free window,
- wherein the address of the second UWB device is not included in the ranging device management list,
- wherein the first information indicates a number of ranging slots used in the contention window, and
- wherein a slot in which the control message is transmitted and slots in the contention window are included together in a ranging period.
8 more elements
A second ultra-wideband (UWB) device comprising:
- a transceiver;
- and
- a controller configured to:
- receive, by using a Bluetooth low energy (BLE) communication scheme, a BLE advertising packet comprising an in-band discovery indicator indicating whether a UWB-based device discovery is used or a BLE-based device discovery is used, wherein when the in-band discovery indicator indicates the UWB-based device discovery is used, the BLE advertising packet comprises UWB channel information, a UWB preamble code index, and a UWB physical layer parameter set;
- receive, from a first UWB device, a control message comprising first information on a contention window for contention-based access by using a UWB communication scheme, second information on ranging device management list for a contention free window, and third information related to a size of the ranging device management list, the second information comprising address for at least one UWB device;
- and
- transmit, to the first UWB device, a ranging response message, in a slot in the contention window by using the UWB communication scheme,
- wherein the ranging response message includes an address of the second UWB device and request of allocation of a ranging slot in the contention free window,
- wherein the address of the second UWB device is not included in the ranging device management list,
- wherein the first information indicates a number of ranging slots used in the contention window, and
- wherein a slot in which the control message is transmitted and slots in the contention window are included together in a ranging period.
8 more elements
Dependencies are inferred from the claim text.