Apparatus and method for resource allocation using mobile base station
The disclosure generally relates to techniques for efficiently allocating resources allocated from a macro base station by estimating the communication possibility of each sensor without direct communication with the sensor in a mobile base station. A method for resource allocation in a mobile base station may include detecting at least one sensor within a communicable range of the mobile base station, estimating a communication possibility of the sensor based on a message queue and a remaining battery level of the at least one sensor, receiving resource allocation from a macro base station based on the communication possibility, and allocating the allocated resource to the sensor.
1. A method for resource allocation in a mobile base station, the method comprising:
detecting at least one sensor within a communicable range of the mobile base station;
estimating a communication possibility of the sensor based on a message queue and a remaining battery level of the at least one sensor;
receiving resource allocation from a macro base station based on the communication possibility; and
allocating the allocated resource to the sensor,
wherein the estimating the communication possibility of the sensor based on the message queue and the remaining battery level of the at least one sensor includes:
estimating the communication possibility of the sensor based on whether a packet exists in the message queue and whether the remaining battery level is equal to or greater than a reference value required for transmission of the packet.
2. The method for resource allocation of claim 1 , wherein the at least one sensor in the communicable range of the mobile base station corresponds to at least one of a first state, a second state and a third state, and the allocating of the resource to the sensor includes allocating, by the mobile base station, the resource to a sensor having a higher probability of corresponding to the second state than the first state and the third state.
3. The method for resource allocation of claim 2 , wherein the receiving of the resource allocation from the macro base station includes receiving the resource allocation from the macro base station based on a number of the at least one sensor corresponding to the second state in the communicable range and a signal strength by a macro user.
4. The method for resource allocation of claim 2 , wherein the allocating of the resource to the sensor includes allocating the resource to the sensor having the highest probability of corresponding to the second state when there are a plurality of sensors having a higher probability of corresponding to the second state than the first state and the third state.
5. The method for resource allocation of claim 2 , wherein the first state corresponds to a case in which the remaining battery level of the sensor is greater than or equal to a reference value but there are no packets in the message queue, the second state corresponds to a case in which the remaining battery level of the sensor is greater than or equal to the reference value and there exists a packet in the message queue, and the third state corresponds to a case in which the remaining battery level is less than the reference value regardless of the message queue.
6. The method for resource allocation of claim 1 , wherein the estimating of the communication possibility of the sensor includes estimating the communication possibility based on a steady state probability based on a Markov chain and updating the communication possibility using different transition probabilities depending on whether a macro user communicates with the macro base station using the resource.
7. The method for resource allocation of claim 1 , wherein the mobile base station detects a signal transmitted by a macro user every resource allocation period and updates the communication possibility of the sensor every resource allocation period.
8. A mobile base station comprising:
a communication device;
a memory configured to store at least one instruction; and
a processor configured to execute the at least one instruction to detect at least one sensor within a communicable range of the mobile base station, estimate a communication possibility of the sensor based on a message queue and a remaining battery level of the at least one sensor, and allocate a resource allocated from a macro base station to the sensor based on the communication possibility,
wherein the estimating the communication possibility of the sensor based on the message queue and the remaining battery level of the at least one sensor includes:
estimating the communication possibility of the sensor based on whether a packet exists in the message queue and whether the remaining battery level is equal to or greater than a reference value required for transmission of the packet.
9. The mobile base station of claim 8 , wherein the at least one sensor in the communicable range of the mobile base station corresponds to at least one of a first state, a second state and a third state, and the allocating of the resource to the sensor includes allocating, by the mobile base station, the resource to a sensor having a higher probability of corresponding to the second state than the first state and the third state.
10. The mobile base station of claim 9 , wherein the resource allocation from the macro base station includes receiving the resource allocation from the macro base station based on a number of the at least one sensor corresponding to the second state in the communicable range and a signal strength by a macro user.
11. The mobile base station of claim 9 , wherein the allocating of the resource to the sensor includes allocating the resource to the sensor having the highest probability of corresponding to the second state when there are a plurality of sensors having a higher probability of corresponding to the second state than the first state and the third state.
12. The mobile base station of claim 9 , wherein the first state corresponds to a case in which the remaining battery level of the sensor is greater than or equal to a reference value but there are no packets in the message queue, the second state corresponds to a case in which the remaining battery level of the sensor is greater than or equal to the reference value and there exists a packet in the message queue, and the third state corresponds to a case in which the remaining battery level is less than the reference value regardless of the message queue.
13. The mobile base station of claim 8 , wherein the estimating of the communication possibility of the sensor includes estimating the communication possibility based on a steady state probability based on a Markov chain and updating the communication possibility using different transition probabilities depending on whether a macro user communicates with the macro base station using the resource.
14. The mobile base station of claim 8 , wherein the mobile base station detects a signal transmitted by a macro user every resource allocation period and updates the communication possibility of the sensor every resource allocation period.
15. A non-transitory computer readable medium having instructions stored thereon that, when executed by a processor, cause the processor to perform operations comprising:
detecting at least one sensor within a communicable range of a mobile base station;
estimating a communication possibility of the sensor based on a message queue and a remaining battery level of the at least one sensor;
receiving resource allocation from a macro base station based on the communication possibility; and
allocating the allocated resource to the sensor,
wherein the estimating the communication possibility of the sensor based on the message queue and the remaining battery level of the at least one sensor includes:
estimating the communication possibility of the sensor based on whether a packet exists in the message queue and whether the remaining battery level is equal to or greater than a reference value required for transmission of the packet.