Resource collision resolution method and apparatus
A resource collision resolution method and apparatus in a V2X direct link communication scene. A first device receives resource allocation information respectively sent by n second devices, where n is an integer greater than 1. The first device determines, according to the resource allocation information sent by the second device, resources allocated by the second device. When the resource allocated by a target second device in the n second devices meets a resource collision condition, the first device executes the resource collision resolution process.
1. A method for resource collision resolution in a V2X direct communication scenario, comprising:
receiving, by a first device, resource allocation information transmitted by n second devices respectively, wherein the resource allocation information transmitted by a second device is configured to indicate resources allocated by the second device for direct communication information transmitted between the first device and the second device, wherein the first device and the second device are terminal devices of a direct communication, where n is an integer greater than 1;
determining, by the first device, the resources allocated by the second device based on the resource allocation information transmitted by the second device; and
executing, by the first device, a resource collision resolution process when the resources allocated by a target second device in the n second devices meet a resource collision condition, wherein the resource collision condition comprises overlapping resources existing between the resources allocated by the target second device and the resources allocated by other second devices;
wherein executing the resource collision resolution process by the first device comprises:
when a priority of target direct communication information corresponding to the target second device is lower than a priority of other direct communication information corresponding to the other second devices, transmitting, by the first device, resource reallocation information to the target second device, wherein the resource reallocation information is configured to instruct the target second device to reallocate resources.
2. The method of claim 1 , wherein the resource collision condition further comprises a proportion of the overlapping resources in resources allocated by the target second device and/or a proportion of the overlapping resources in resources allocated by the other second devices being greater than a threshold.
3. The method of claim 1 , further comprising:
when the resources allocated by the target second device meet the resource collision condition, detecting by the first device whether the target second device meets a resource reallocation condition, wherein the resource reallocation condition refers to a preset condition requiring resource reallocation; and
when the target second device meets the resource reallocation condition, executing, by the first device, the step of transmitting resource reallocation information to the target second device.
4. The method of claim 3 , wherein the resource reallocation condition comprises any one or a combination of:
the proportion of the overlapping resources in resources allocated by the target second device being greater than the proportion of the overlapping resources in resources allocated by the other second devices;
a starting time of time domain resources allocated by the target second device being later than a starting time of time domain resources allocated by the other second devices; and
a priority of direct communication information transmitted by the resources allocated by the target second device being lower than a priority of direct communication information transmitted by the resources allocated by the other second devices.
5. The method of claim 1 , wherein the resource reallocation information comprises identification information of the overlapping resources.
6. The method of claim 1 , wherein the direct communication information comprises information transmitted by the second device to the first device through a sidelink.
7. The method of claim 1 , wherein the direct communication information comprises information transmitted by the first device to the second device through a sidelink.
8. A method for resource collision resolution in a V2X direct communication scenario, comprising:
transmitting, by a second device, resource allocation information to a first device, wherein the resource allocation information is configured to indicate resources allocated by the second device for direct communication information transmitted between the first device and the second device, wherein the first device and the second device are terminal devices of a direct communication; and
receiving, by the second device, information transmitted by the first device when executing a resource collision resolution process, wherein the resource collision resolution process is executed when the resources allocated by the second device meet a resource collision condition, and the resource collision condition comprises overlapping resources existing between the resources allocated by the second device and resources allocated by other devices;
wherein receiving, by the second device, the information transmitted by the first device when executing the resource collision resolution process, comprises:
receiving, by the second device, resource reallocation information transmitted by the first device, wherein the resource reallocation information is configured to instruct the second device to reallocate resources and the resource reallocation information is transmitted by the first device when a priority of target direct communication information corresponding to the target second device is lower than a priority of other direct communication information corresponding to the other second devices.
9. An apparatus for resource collision resolution in a V2X direct communication scenario, applied to a first device, comprising:
a processor; and
a memory configured to store instructions executable by the processor;
wherein the processor is configured to:
receive resource allocation information transmitted by n second devices respectively, wherein the resource allocation information transmitted by a second device is configured to indicate resources allocated by the second device for direct communication information transmitted between the first device and the second device, wherein the first device and the second device are terminal devices of a direct communication, where n is an integer greater than 1;
determine the resources allocated by the second device based on the resource allocation information transmitted by the second device; and
execute a resource collision resolution process when the resources allocated by a target second device in the n second devices meet a resource collision condition, wherein the resource collision condition comprises overlapping resources existing between the resources allocated by the target second device and resources allocated by other second devices;
wherein the processor is configured to:
when a priority of target direct communication information corresponding to the target second device is lower than a priority of other direct communication information corresponding to the other second devices, transmit resource reallocation information to the target second device, wherein the resource reallocation information is configured to instruct the target second device to reallocate resources.
10. An apparatus for resource collision resolution in a V2X direct communication scenario, applied to a second device, and configured to implement the method of claim 8 , comprising:
a processor; and
a memory configured to store instructions executable by the processor;
wherein the processor is configured to perform steps of the method of claim 8 .
11. The apparatus of claim 9 , wherein the processor is further configured to:
detect whether the target second device meets the resource reallocation condition when the resources allocated by the target second device meets the resource collision condition, wherein the resource reallocation condition refers to a preset condition requiring resource reallocation; and
transmit the resource reallocation information to the target second device when the target second device meets the resource reallocation condition.