Device and method for generating scrambled timestamp sequence (STS) in ultra wide band (UWB) communication system
Provided is a method of an electronic device for performing ultra wide band (UWB) communication. The method includes receiving upper bit information including pre-set at least one parameter via a UWB command interface (UCI), obtaining slot count information and key information including a constant key value, and performing static scrambled timestamp sequence (STS) generation, based on the upper bit information, the slot count information, and the key information.
1. A method performed by an electronic device for performing ultra wide band (UWB) communication, the method comprising:
receiving information including a parameter indicating an identification of a vendor, via a UWB command interface (UCI);
identifying information associated with a value increasing for each slot and information associated with a fixed constant key value for a static scrambled timestamp sequence (STS); and
performing a static STS generation, based on the information including the parameter indicating the identification of the vendor, the information associated with the value increasing for each slot and the key information associated with the fixed constant key value.
2. The method of claim 1 ,
wherein the static STS generation is performed for a plurality of rounds, and
wherein the value increasing for each slot is initialized for each round during the static STS generation.
3. The method of claim 1 , wherein a deterministic random bit generator (DRBG) is used for the static STS generation, and
wherein an input of the DRBG comprises the information including the parameter indicating the identification of the vendor, the information associated with the value increasing for each slot and the information associated with the fixed constant key value.
4. The method of claim 3 , wherein the input of the DRBG further comprises STS count information associated with a number of outputs of the DRBG.
5. The method of claim 4 , wherein the STS count information is initialized for each slot.
6. The method of claim 1 , wherein STSs respectively corresponding to a plurality of slots included in each of a plurality of rounds are different from each other, and
wherein a plurality of first STSs associated with a first round and a plurality of second STSs associated with a second round are the same.
7. An electronic device for performing ultra wide band (UWB) communication, the electronic device comprising:
a transceiver; and
at least one processor coupled to the transceiver and configured to:
receive, via the transceiver, information including a parameter indicating an identification of a vendor, via a UWB command interface (UCI),
identify information associated with a value increasing for each slot and information associated with a fixed constant key value for a static scrambled timestamp sequence (STS), and
perform a static STS generation, based on the information including the parameter indicating the identification of the vendor, the information associated with the value increasing for each slot and the information associated with the fixed constant key value.
8. The electronic device of claim 7 ,
wherein the static STS generation is performed for a plurality of rounds, and
wherein the value increasing for each slot is initialized for each round during the static STS generation.
9. The electronic device of claim 7 , wherein the at least one processor comprises a deterministic random bit generator (DRBG) for the static STS generation, and
wherein an input of the DRBG comprises the information including the parameter indicating the identification of the vendor, the information associated with the value increasing for each slot, and the information associated with the fixed constant key value.
10. The electronic device of claim 9 , wherein the input of the DRBG further comprises STS count information associated with a number of outputs of the DRBG, and
wherein the STS count information is initialized for each slot.
11. The electronic device of claim 7 , wherein STSs respectively corresponding to a plurality of slots included in each of a plurality of rounds are different from each other, and
wherein a plurality of first STSs associated with a first round and a plurality of second STSs associated with a second round are the same.