Abstract: A wireless connection system and method are provided to connect diverse Ad-hoc network groups. A first Ad-hoc network group has a first network node and a first edge node wirelessly connecting with each other. The second Ad-hoc network group has a second network node and a second edge node wirelessly connecting with each other without connecting the first Ad-hoc network group. The first and second edge nodes have multiple wireless modules respectively. One of the wireless modules is used to connect wireless with other network nodes in the same Ad-hoc network group. The rest extra wireless module(s) is used to connect wirelessly with another extra wireless module(s) of the edge node(s) in different Ad-hoc network group(s). Therefore, the independent first and second Ad-hoc network groups are now capable of wirelessly connecting with each other.

Abstract: A system and method are provided for multiple nodes to wirelessly transmit in an Ad-hoc network architecture. First of all, an integration module of the system integrates a multi-node transmission protocol into a reservation column of a data packet. Next, an initial node of the system transmits the integrated data packet. Afterwards, according to the multi-node transmission protocol, one or more bridge node of the system receives the integrated data packet transmitted from the initial node. And finally, according to the multi-node transmission protocol, a destination node of the system receives the integrated data packet transmitted from the bridge node. By means of the proposed system and method, data transmission between multiple nodes is achieved under the Ad-hoc network architecture.

Abstract: A radio frequency identification (RFID) reader includes a plurality of signal antennas, which are respectively arranged in directions that are not parallel to and co-linear with each other. Each of the signal antennas has a predetermined antenna field pattern and operates with a predetermined carrier wave frequency. A wireless receiver is connected to the signal antennas. A signal conversion unit is connected to the wireless receiver. A frequency generator generates the carrier wave frequency to the signal antenna. A microprocessor is connected to the signal conversion unit and the frequency generator.

Abstract: A system and method is provided to track positions of a portable electronic device. Different communication modules capable of retrieving position signals are enabled selectively according to the status/type of position signals of the portable electronic device. All of the different communication modules are enabled when the portable electronic device locates around a boundary between different regions that require different communication modules to obtain geography information. Therefore, by means of seamless transferring operation between different communication modules, a remote manager may be able to continuously monitor the positions of the portable electronic device.

Abstract: A radio frequency identification (RFID) communication system and method is provided to resolve the power-consuming problems of an active RFID tag while operating at a receiving mode in a long duration. A designated channel is established between the reader and the RFID tag, and also the reader sends a designated message so that the actuated active RFID tag can receive the designated messages and dynamically enter into a receiving mode. Therefore, normal communications may be conducted between the reader and the RFID and the usage period or technical performance can be improved as well.

Abstract: A method for preventing signal collision in radio frequency identification (RFID) system through random code timing is disclosed. The RFID system includes one or more RFID reading device to receive respective tag information from a plurality of RFID tags. Multiple RFID tags of the RFID system each includes a microprocessor connected to a random code generation unit, a power supply unit, a memory unit and a radio frequency transceiver module. The memory unit stores the respective tag information that contains a tag identification code. The microprocessor of the RFID tag issues a base number or uses the tag identification code to generate a random code and a tag signal is transmitted to the RFID reading device in accordance with the random code so generated.

Abstract: A method and system is provided to reinforce wireless communication capabilities between multiple network nodes of an wireless network group. The method and system first detects a wireless transmission capability between a first network node and a second network node. When the wireless transmission capability is lower than a threshold value, one set of reinforcing coordinates will be derived by introducing the first geographic information and the second geographic information. Afterwards, move a third network node to a position with the set of reinforcing coordinates to establish an alternative wireless transmission route between the first network note and second network node. Therefore, when an original wireless transmission route between any two network nodes is abnormal, the alternative wireless transmission route will be available in time and reduce the risks of losing transmission signals.

Abstract: An ADSL physical transmission layer retrieves data to be transmitted from either a transmit data buffer, or a dummy cell buffer in the case when no actual data is being transmitted to maintain a continuous data stream in an ADSL data link. The ADSL physical transmission layer and an associated ATM protocol layer are implemented as an interrupt service routine and delayed procedure call respectively in an ADSL software modem application. Because the ATM protocol layer does not fill the transmit data buffer with dummy cell data, it is simpler and faster. Moreover, latency is minimized, and overall system throughput enhanced since the maximum latency is independent of any operating system latency, and is no greater than the size of the cell stored in the dummy cell buffer.

Abstract: An ADSL physical transmission layer retrieves data to be transmitted from either a transmit data buffer, or a dummy cell buffer in the case when no actual data is being transmitted to maintain a continuous data stream in an ADSL data link. The ADSL physical transmission layer and an associated ATM protocol layer are implemented as an interrupt service routine and delayed procedure call respectively in an ADSL software modem application. Because the ATM protocol layer does not fill the transmit data buffer with dummy cell data, it is simpler and faster. Moreover, latency is minimized, and overall system throughput enhanced since the maximum latency is independent of any operating system latency, and is no greater than the size of the cell stored in the dummy cell buffer.