Resource selection method and terminal
A resource selection method includes monitoring, by a first terminal, a first subframe, where a quantity of the first subframes is less than or equal to a quantity of second subframes; receiving, by the first terminal, indication information in the first subframe; determining, by the first terminal, a first resource in the second subframe according to the indication information; and selecting, according to the first resource, a resource in the second subframe for the first terminal to send data. There may be one or more first subframes; the second subframe may be a candidate subframe, and there may be one or more candidate subframes. The indication information includes information that can indicate a resource reserved by a second terminal, that is, indication information that can indicate a resource excluded by the second terminal.
1. A method implemented by a first terminal, wherein the method comprises:
determining a quantity of first subframes based on a quantity of second subframes and a first parameter, wherein the quantity of the first subframes is less than or equal to the quantity of the second subframes, wherein the first parameter is equal to a product of a value of a second parameter and a value of a third parameter that is greater than zero and less than one, wherein the first parameter is different than the third parameter, wherein the third parameter is a restrict resource reservation period parameter that is either preconfigured or is configured by a network-side device, wherein an interval between a last subframe of the first subframes and a last subframe of the second subframes is a fourth parameter, and wherein the fourth parameter is not greater than the second parameter;
monitoring the first subframes;
receiving indication information in the first subframes;
determining, according to the indication information, a first resource in the second subframes that is reserved by another terminal; and
selecting, from remaining resources in the second subframes excluding the first resource, a second resource in the second subframes for the first terminal to send data.
2. The method of claim 1 , further comprising determining the quantity of the first subframes by determining a minimum value of the quantity of the second subframes and the first parameter.
3. The method of claim 2 , wherein the third parameter is configured by a network-side device, wherein the second parameter is a scale factor, and wherein a resource reservation interval is based on the scale factor.
4. The method of claim 1 , wherein determining the first resource according to the indication information comprises determining the first resource according to a fifth parameter and a target parameter, wherein the indication information indicates the target parameter, and wherein the fifth parameter is determined according to the target parameter.
5. The method of claim 4 , wherein the fifth parameter is determined by dividing one by the target parameter.
6. The method of claim 1 , wherein a value of the second parameter is greater than the quantity of the second subframes.
7. A terminal, comprising:
a receiver configured to receive indication information in first subframes;
a processor coupled to the receiver and configured to:
determine a quantity of the first subframes based on a quantity of second subframes and a first parameter, wherein the quantity of the first subframes is less than or equal to the quantity of the second subframes, wherein the first parameter is equal to a product of a value of a second parameter and a value of a third parameter that is greater than zero and less than one, wherein the first parameter is different than the third parameter, wherein the third parameter is a restrict resource reservation period parameter that is either preconfigured or is configured by a network-side device, wherein an interval between a last subframe of the first subframes and a last subframe of the second subframes is a fourth parameter, and wherein the fourth parameter is not greater than the second parameter;
monitor the first subframes;
determine, according to the indication information, a first resource in the second subframes that is reserved by another terminal; and
select, from remaining resources in the second subframes excluding the first resource, a second resource in the second subframes for the terminal to send data.
8. The terminal of claim 7 , wherein the quantity of the first subframes is equal to a minimum value of the quantity of the second subframes and the first parameter.
9. The terminal of claim 8 , wherein the third parameter is configured by the network-side device, and wherein the second parameter is a scale factor.
10. The terminal of claim 7 , wherein the processor is further configured to determine the first resource according to a fifth parameter and a target parameter, wherein the indication information indicates the target parameter, and wherein the fifth parameter is determined according to the target parameter.
11. The terminal of claim 10 , wherein the fifth parameter is obtained by dividing one by the target parameter.
12. The terminal of claim 7 , wherein the third parameter is preconfigured.
13. A computer program product comprising processor executable instructions that, when executed by a processor, cause a first terminal to be configured to:
determine a quantity of first subframes based on a quantity of second subframes and a first parameter, wherein the quantity of the first subframes is less than or equal to the quantity of the second subframes, wherein the first parameter is equal to a product of a value of a second parameter and a value of a third parameter that is greater than zero and less than one, wherein the first parameter is different than the third parameter, wherein the third parameter is a restrict resource reservation period parameter that is either preconfigured or is configured by a network-side device, wherein an interval between a last subframe of the first subframes and a last subframe of the second subframes is a fourth parameter, and wherein the fourth parameter is not greater than the second parameter;
monitor the first subframes;
receive indication information in the first subframes;
determine, according to the indication information, a first resource in the second subframes that is reserved by another terminal; and
select, from remaining resources in the second subframes excluding the first resource, a second resource for the first terminal to send data.
14. The computer program product of claim 13 , wherein the quantity of the first subframes is equal to a minimum value of the quantity of the second subframes and the first parameter.
15. The computer program product of claim 14 , wherein the third parameter is configured by the network-side device, and wherein the second parameter is a scale factor.
16. The computer program product of claim 13 , wherein the first resource is determined according to a fifth parameter and a target parameter, wherein the indication information indicates the target parameter, and wherein the fifth parameter is determined according to the target parameter.
17. The computer program product of claim 16 , wherein the fifth parameter is obtained by dividing one by the target parameter.