| 主权项 |
1. A gateway to communicate with sensor nodes, the gateway comprising:
a processor configured to determine, with respect to a time slot included in a previous uplink interval, whether data is received from a sensor node corresponding to the time slot; generate, based on previous schedule information on the previous uplink interval, response data, wherein, upon determining that the data is received, the processor is configured to set a bit corresponding to the sensor node among a set of bits included in the response data to be a first logic value, and wherein, upon determining that the data is not received, the processor is configured to set the bit to be a second logic value; and generate subsequent schedule information about a subsequent uplink interval, the subsequent schedule information comprising elements in the subsequent uplink interval allocated to the sensor nodes; and a transmitter configured to transmit the response data and the subsequent schedule information to the sensor nodes, wherein the response data comprises the set of bits, each bit corresponding to a sensor node that transmitted data in the previous uplink interval. |
