Electronic device performing ranging operation by using ultra wide-band and operation method of the electronic device
Provided are an electronic device that performs ranging by using an ultra wide-band (UWB) communication scheme and an operation method of the electronic device. The operation method of the first electronic device includes transmitting a first ranging control message (RCM) comprising interval information to a second electronic device, determining a first time to transmit a second RCM based on the interval information, determining a first RCM timing window (RTW) based on the first time, transmitting the second RCM to the second electronic device in the first RTW, and transmitting a third RCM at a second time in a second RTW, based on a failure to receive a response message corresponding to the second RCM within a specific time period in the first RTW, wherein the second time is a random time point in the second RTW.
1. An operation method of a first electronic device that performs ranging operation by using an ultra wide-band (UWB), the operation method comprising:
transmitting a first ranging control message (RCM) comprising interval information to a second electronic device;
determining, based on the interval information, a first time related to a start time of a next ranging round;
determining a first RCM timing window (RTW) based on the first time;
transmitting a second RCM to the second electronic device in the first RTW; and
transmitting a third RCM at a second time in a second RTW, based on a failure to receive a ranging message related to the second RCM,
wherein the second time is a random time point in the second RTW,
wherein the interval information in the first RCM comprises a first field indicating whether a RTW initial size is present, and a second field indicating whether a RTW multiplier value is present, and
wherein, in a case that the first field indicates a presence of the RTW initial size, the interval information included in the first RCM comprises the RTW initial size for the first RTW, and in a case that the second field indicates a presence of the RTW multiplier value, the interval information comprises the RTW multiplier value for the first RTW.
2. The operation method of claim 1 , wherein the transmitting of the second RCM comprises transmitting the second RCM at a random time in the first RTW.
3. The operation method of claim 1 , wherein the second RTW has a first size that is same as a second size of the first RTW.
4. The operation method of claim 1 , wherein the second RTW has a first size larger than a second size of the first RTW.
5. The operation method of claim 1 , wherein
a size, Wresult, of the first RTW is determined based on following equation:
W _result= RTW Initial Size×2 ( RTW Multiplier value).
6. An operation method of a second electronic device that performs ranging by using an ultra wide-band (UWB), the operation method comprising:
receiving a first ranging control message (RCM) comprising interval information from a first electronic device;
determining, based on the interval information, a first time related to a start time of a next ranging round;
determining a first RTW based on the first time;
determining a second RTW based on the interval information, based on a failure to receive a second RCM in the first RTW; and
receiving a third RCM transmitted at a second time in the second RTW,
wherein the second time is a random time point in the second RTW,
wherein the interval information in the first RCM comprises a first field indicating whether a RTW initial size is present, and a second field indicating whether a RTW multiplier value is present, and
wherein, in a case that the first field indicates a presence of the RTW initial size, the interval information included in the first RCM comprises the RTW initial size for the first RTW, and in a case that the second field indicates a presence of the RTW multiplier value, the interval information comprises the RTW multiplier value for the first RTW.
7. The operation method of claim 6 , wherein the determining of the second RTW comprises:
determining that the receiving of the second RCM has failed, based on the failure to receive the second RCM in the first RTW; and
determining the second RTW based on the interval information, based on the determination that the receiving of the second RCM has failed.
8. The operation method of claim 6 , wherein the second RTW has a first size that is same as a second size of the first RTW.
9. The operation method of claim 6 , wherein the second RTW has a first size larger than a second size of the first RTW.
10. The operation method of claim 6 , wherein
a size, Wresult, of the first RTW is determined based on flowing equation:
W _result= RTW Initial Size×2 ( RTW Multiplier value).
11. A first electronic device that performs a ranging operation by using an ultra wide-band (UWB), the first electronic device comprising:
a communicator;
a memory; and
at least one processor configured to control an operation of the first electronic device by executing a program stored in the memory,
wherein the at least one processor is further configured to:
transmit a first ranging control message (RCM) comprising interval information to a second electronic device;
determine, based on the interval information, a first time related to a start time of a next ranging round;
determine a first RTW based on the first time;
transmit a second RCM to the second electronic device in the first RTW; and
transmit a third RCM at a second time in a second RTW, based on a failure to receive a ranging message related to the second RCM,
wherein the second time is a random time point in the second RTW,
wherein the interval information in the first RCM comprises a first field indicating whether a RTW initial size is present, and a second field indicating whether a RTW multiplier value is present, and
wherein, in a case that the first field indicates a presence of the RTW initial size, the interval information included in the first RCM comprises the RTW initial size for the first RTW, and in a case that the second field indicates a presence of the RTW multiplier value, the interval information comprises the RTW multiplier value for the first RTW.
12. A second electronic device that performs a ranging operation by using an ultra wide-band (UWB), the second electronic device comprising:
a communicator;
a memory; and
at least one processor configured to control an operation of the second electronic device by executing a program stored in the memory,
wherein the at least one processor is further configured to:
receive a first ranging control message (RCM) comprising interval information from a first electronic device;
determine, based on the interval information, a first time related to a start time of a next ranging round;
determine a first RTW based on the first time; and
determine a second RTW based on the interval information, when a second RCM is not received in the first RTW, and receive a third RCM transmitted at a second time in the second RTW,
wherein the second time is a random time point in the second RTW,
wherein the interval information in the first RCM comprises a first field indicating whether a RTW initial size is present, and a second field indicating whether a RTW multiplier value is present, and
wherein, in a case that the first field indicates a presence of the RTW initial size, the interval information included in the first RCM comprises the RTW initial size for the First RTW, and in a case that the second field indicates a presence of the RTW multiplier value, the interval information comprises the RTW multiplier value for the first RTW.