Abstract: A data integration apparatus for use in a sensor network system is provided. The sensor network system includes a sensor network and an application server. The data integration apparatus receives text commands associated with access of the sensor network from the application server, and accomplishes the operations of the tabled data provided by the network node of the sensor network by using the text commands and the hardware configurations of the sensor network cooperatively.

Abstract: A data integration apparatus for use in a sensor network system is provided. The sensor network system includes a sensor network and an application server. The data integration apparatus receives text commands associated with access of the sensor network from the application server, and accomplishes the operations of the tabled data provided by the network node of the sensor network by using the text commands and the hardware configurations of the sensor network cooperatively.

Abstract: A method and a system for indoor positioning are provided. In the present method, a default positioning weight is defined at first. Then, a plurality of neighboring ranging devices near a target device is obtained from all wireless ranging devices deployed in an indoor space, and a current positioning weight of each of the neighboring ranging devices is calculated. Next, the current positioning weight of each of the neighboring ranging devices is respectively compared with the default positioning weight, so as to obtain a plurality of reference ranging devices from the neighboring ranging devices. After calculating at least one candidate coordinate according to a deploy coordinate of each of the reference ranging devices, a positioned coordinate represents the current location of the target device is estimated according to the at least one candidate coordinate.

Abstract: A network communication node and a data transmission method thereof for use in a power line communication network are provided. The network communication node receives a broadcast message from a gateway, and determines whether the load of the power line communication network changes or not. The network communication node is capable of changing a route for transmitting the data dynamically according to the change of the load.

Abstract: An apparatus for a beacon-enabled wireless network, a transmission time determination method, and a tangible machine-readable medium thereof are provided. The apparatus is located within the coverage area of the first equipment. The second equipment is located within the coverage area of the apparatus. The apparatus comprises a receive/transmission module and a decision module. The receive/transmission module is configured to receive the beacon of the first equipment. The decision module is configured to decide information of an upload time slot and a download time slot of the apparatus according to the beacon so that the receive/transmission module can perform data transmission with the first equipment by the upload time slot and perform data transmission with the second equipment by the download time slot. According to the aforementioned allocations, transmission collisions can be avoided and delay of transmission times is decreased.

Abstract: A method and a system for indoor positioning are provided. In the present method, a default positioning weight is defined at first. Then, a plurality of neighboring ranging devices near a target device is obtained from all wireless ranging devices deployed in an indoor space, and a current positioning weight of each of the neighboring ranging devices is calculated. Next, the current positioning weight of each of the neighboring ranging devices is respectively compared with the default positioning weight, so as to obtain a plurality of reference ranging devices from the neighboring ranging devices. After calculating at least one candidate coordinate according to a deploy coordinate of each of the reference ranging devices, a positioned coordinate represents the current location of the target device is estimated according to the at least one candidate coordinate.

Abstract: A data processing method for communication for a network having a plurality of nodes and a data collection device is provided. First, one of the nodes is selected according to a schedule for overhearing a reference data transmitted by a reference node to the data collection device. Then, a predicted data is calculated by the selected node according to the reference data and a corresponding prediction module. Next, the predicted data is compared with an actual data captured by the selected node, and an error between the predicted data and the actual data is transmitted to the data collection device. The selected node needs not to transmit any data to the data collection device if there is no error between the predicted data and the actual data. Thereby, the quantity of data to be transmitted is greatly reduced, and accordingly problems caused by insufficient bandwidth of the network are avoided.

Abstract: A communication apparatus originally transmits data packets via a first channel based on a first beacon interval. A memory thereof records the first beacon interval. A receiving interface thereof receives information of a second channel. A processor thereof determines whether the second channel has been used according to the information. If not, a transmission interface thereof switches the communication channel to the second channel, and transmits data based on the first beacon interval via the second channel in order to solve the problem that packets are delay for transmission or even abandoned due to overload of the beacon network.

Abstract: An apparatus for a beacon-enabled wireless network, a transmission time determination method, and a tangible machine-readable medium thereof are provided. The apparatus is located within the coverage area of the first equipment. The second equipment is located within the coverage area of the apparatus. The apparatus comprises a receive/transmission module and a decision module. The receive/transmission module is configured to receive the beacon of the first equipment. The decision module is configured to decide information of an upload time slot and a download time slot of the apparatus according to the beacon so that the receive/transmission module can perform data transmission with the first equipment by the upload time slot and perform data transmission with the second equipment by the download time slot. According to the aforementioned allocations, transmission collisions can be avoided and delay of transmission times is decreased.

Abstract: A communication apparatus originally transmits data packets via a first channel based on a first beacon interval. A memory thereof records the first beacon interval. A receiving interface thereof receives information of a second channel. A processor thereof determines whether the second channel has been used according to the information.

Abstract: A system, a method, a computer program product, and a computer readable medium thereof for a new node joining a wireless network are disclosed. The wireless network system comprises a plurality of child nodes and a plurality of father nodes corresponding to those child nodes. Each of the child nodes and each of the father nodes can send a beacon packet, which comprises an absolute time index and a relative time index. When the new node collects the absolute time indexes and relative time indexes of neighboring child nodes, it can calculate the occupied absolute time index quickly and derive its absolute time index from the unoccupied absolute time index. Based on the same reason, when applying the system to a scheduling algorithm, the scheduled result can be derived quickly. In addition, the system can prevent the accumulated error. The system can be applied to a low-rate wireless network.