Resource reselection method and device in wireless communication for vehicle

1 . A resource reselection method in wireless communication for a vehicle, the resource reselection method comprising:

acquiring a vehicle speed;

setting at least one timer based on the vehicle speed;

performing a random number decision to obtain a determination result, the determination result being indicative of whether a reselection mode is to be entered; and

performing resource reselection based on the determination result, the vehicle speed, and state information of the at least one timer.

2 . The resource reselection method according to claim 1 , wherein the performing resource reselection based on the determination result, the vehicle speed, and the state information of the at least one timer comprises:

performing the resource reselection based on the vehicle speed, the state information of the at least one timer and a busyness rate of a data transmission channel in response to the determination result indicating that the reselection mode is to be entered; and

performing the resource reselection based on the state information of the at least one timer and a determination to perform the resource reselection, the determination to perform the resource reselection being based on the vehicle speed, and the determination to perform the resource reselection being performed in response to the determination result indicating that the reselection mode is not to be entered.

3 . The resource reselection method according to claim 2 , wherein

the at least one timer includes a first timer;

the setting the at least one timer based on the vehicle speed includes turning off the first timer when the vehicle speed is greater than a first threshold; and

the performing resource reselection based on the vehicle speed, the state information of the at least one timer and the busyness rate of the data transmission channel comprises:

performing the resource reselection in response to determining the vehicle speed is greater than a second threshold,

performing the resource reselection when the first timer expires in response to determining the vehicle speed is less than the first threshold and the busyness rate is greater than a value, whether the vehicle speed is less than the first threshold and whether the busyness rate is greater than the value being determined in response to determining the vehicle speed is not greater than the second threshold, and

performing the resource reselection in response to determining the vehicle speed is not less than the first threshold or the busyness rate is not greater than the value.

4 . The resource reselection method of claim 3 , wherein

the at least one timer includes a second timer;

the setting the at least one timer based on the vehicle speed includes turning off the second timer when the vehicle speed is not greater than the second threshold;

the determination to perform the resource reselection includes determining to perform the resource reselection based on the vehicle speed being greater than the second threshold; and

the performing the resource reselection based on the state information of the at least one timer and the determination to perform the resource reselection includes performing the resource reselection when the second timer expires.

5 . The resource reselection method according to claim 4 , wherein the performing the resource reselection when the second timer expires comprises:

determining whether the second timer is running;

setting the second timer to run in response to determining that the second timer is not running; and

performing the resource reselection when the second timer expires.

6 . The resource reselection method according to claim 3 , wherein the performing the resource reselection when the first timer expires comprises:

determining whether the first timer is running;

setting the first timer to run in response to determining that the first timer is not running; and

performing the resource reselection when the first timer expires.

7 . The resource reselection method according to claim 1 , wherein

the performing the random number decision comprises:

generating a random number, and

comparing the random number with a parameter value to obtain a random number decision result; and

the resource reselection method further comprises:

increasing the parameter value in response to the vehicle speed being less than a first threshold and a busyness rate of a data transmission channel being greater than a value, the increasing being performed before the performing the random number decision, and

reducing the parameter value in response to the vehicle speed being greater than the first threshold, the reducing being performed before the performing the random number decision.

8 . A resource reselection device in wireless communication for a vehicle, the resource reselection device comprising:

processing circuitry configured to

acquire a vehicle speed,

set at least one timer based on the vehicle speed,

perform a random number decision to obtain a determination result, the determination result being indicative of whether a reselection mode is to be entered, and

perform resource reselection based on the determination result, the vehicle speed, and state information of the at least one timer.

9 . A non-transitory computer-readable storage medium storing a computer program that, when executed by at least one processor, causes the at least one processor to perform a resource reselection method in wireless communication for a vehicle, the resource reselection method comprising:

acquiring a vehicle speed;

setting at least one timer based on the vehicle speed;

performing a random number decision to obtain a determination result, the determination result being indicative of whether a reselection mode is to be entered; and

performing resource reselection based on the determination result, the vehicle speed, and state information of the at least one timer.

10 . The non-transitory computer-readable storage medium according to claim 9 , wherein the performing resource reselection based on the determination result, the vehicle speed, and the state information of the at least one timer comprises:

performing the resource reselection based on the vehicle speed, the state information of the at least one timer and a busyness rate of a data transmission channel in response to the determination result indicating that the reselection mode is to be entered; and

performing the resource reselection based on the state information of the at least one timer and a determination to perform the resource reselection, the determination to perform the resource reselection being based on the vehicle speed, and the determination to perform the resource reselection being performed in response to the determination result indicating that the reselection mode is not to be entered.

11 . The non-transitory computer-readable storage medium according to claim 10 , wherein

the at least one timer includes a first timer;

the setting the at least one timer based on the vehicle speed includes turning off the first timer when the vehicle speed is greater than a first threshold; and

the performing resource reselection based on the vehicle speed, the state information of the at least one timer and the busyness rate of the data transmission channel comprises:

performing the resource reselection in response to determining the vehicle speed is greater than a second threshold,

performing the resource reselection when the first timer expires in response to determining the vehicle speed is less than the first threshold and the busyness rate is greater than a value, whether the vehicle speed is less than the first threshold and whether the busyness rate is greater than the value being determined in response to determining the vehicle speed is not greater than the second threshold, and

performing the resource reselection in response to determining the vehicle speed is not less than the first threshold or the busyness rate is not greater than the value.

12 . The non-transitory computer-readable storage medium according to claim 11 , wherein

the at least one timer includes a second timer;

the setting the at least one timer based on the vehicle speed includes turning off the second timer when the vehicle speed is not greater than the second threshold;

the determination to perform the resource reselection includes determining to perform the resource reselection based on the vehicle speed being greater than the second threshold; and

the performing the resource reselection based on the state information of the at least one timer and the determination to perform the resource reselection includes performing the resource reselection when the second timer expires.

13 . The non-transitory computer-readable storage medium according to claim 12 , wherein the performing the resource reselection when the second timer expires comprises:

determining whether the second timer is running;

setting the second timer to run in response to determining that the second timer is not running; and

performing the resource reselection when the second timer expires.

14 . The non-transitory computer-readable storage medium according to claim 11 , wherein the performing the resource reselection when the first timer expires comprises:

determining whether the first timer is running;

setting the first timer to run in response to determining that the first timer is not running; and

performing the resource reselection when the first timer expires.

15 . The non-transitory computer-readable storage medium according to claim 9 , wherein

the performing the random number decision comprises:

generating a random number, and

comparing the random number with a parameter value to obtain a random number decision result; and

the resource reselection method further comprises:

increasing the parameter value in response to the vehicle speed being less than a first threshold and a busyness rate of a data transmission channel being greater than a value, the increasing being performed before the performing the random number decision, and

reducing the parameter value in response to the vehicle speed being greater than the first threshold, the reducing being performed before the performing the random number decision.