Abstract: A system executes a search to tune dimensions and distribution of meta-atoms in the passive acoustic metasurface with respect to a plurality of predefined input signal property sets of the acoustic signal to provide a tuned propagation profile of the meta-atoms in aggregate and forms the meta-atoms with the dimensions and the distribution. Each meta-atom modulates incoming acoustic wavefronts to form corresponding outgoing acoustic wave exiting the passive acoustic metasurface. The tuned propagation profile in aggregate supports the plurality of predefined input signal property sets of the incoming acoustic wavefronts and, for each input signal property set. The physical dimensions and the distribution of the meta-atoms are tuned according to the tuned propagation profile to modulate the incoming acoustic wavefronts to generate a predefined beam pattern of the acoustic signal exiting the passive acoustic metasurface corresponding to a select input signal property set of predefined input signal property sets.

Abstract: This application discloses a network control method. The method includes: obtaining global network information; determining resource information of at least one sliced network based on the global network information, where each sliced network is corresponding to one second controller, and resource information of each sliced network includes initial link bandwidth allocated to each aggregation flow in each sliced network on each link in each sliced network; and sending resource information of a corresponding sliced network to each second controller, so that a target second controller performs, through closed-loop control based on a queue status corresponding to a target sliced network, closed-loop correction on initial link bandwidth allocated to each aggregation flow in the target sliced network on each link in the target sliced network, and each switch in the target sliced network transmits a corresponding aggregation flow based on corresponding corrected link bandwidth.

Abstract: This application discloses a network control method. The method includes: obtaining global network information; determining resource information of at least one sliced network based on the global network information, where each sliced network is corresponding to one second controller, and resource information of each sliced network includes initial link bandwidth allocated to each aggregation flow in each sliced network on each link in each sliced network; and sending resource information of a corresponding sliced network to each second controller, so that a target second controller performs, through closed-loop control based on a queue status corresponding to a target sliced network, closed-loop correction on initial link bandwidth allocated to each aggregation flow in the target sliced network on each link in the target sliced network, and each switch in the target sliced network transmits a corresponding aggregation flow based on corresponding corrected link bandwidth.

Abstract: A method for profiling network traffic of a network. The method includes capturing packets based at least on a common source IP address shared by each of the packets, where said each packet is assigned a source timestamp by a source of said each packet and further assigned a capture timestamp by a packet capturing device, identifying a first portion of the packets as a first flow and a second portion of the packets as a second flow, extracting a first monotonic timestamp-pair (MTSP) sequence and a second MTSP sequence from the first flow and the second flow, respectively, comparing the first MTSP sequence and the second MTSP sequence to generate a result, and determining, based on the result, whether the first flow and the second flow are generated by a single host of the network.

Abstract: A method for profiling network traffic of a network. The method includes capturing packets based at least on a common source IP address shared by each of the packets, where said each packet is assigned a source timestamp by a source of said each packet and further assigned a capture timestamp by a packet capturing device, identifying a first portion of the packets as a first flow and a second portion of the packets as a second flow, extracting a first monotonic timestamp-pair (MTSP) sequence and a second MTSP sequence from the first flow and the second flow, respectively, comparing the first MTSP sequence and the second MTSP sequence to generate a result, and determining, based on the result, whether the first flow and the second flow are generated by a single host of the network.

Abstract: A method for profiling network traffic of a network. The method includes capturing packets based at least on a common source IP address shared by each of the packets, where said each packet is assigned a source timestamp by a source of said each packet and further assigned a capture timestamp by a packet capturing device, identifying a first portion of the packets as a first flow and a second portion of the packets as a second flow, extracting a first monotonic timestamp-pair (MTSP) sequence and a second MTSP sequence from the first flow and the second flow, respectively, comparing the first MTSP sequence and the second MTSP sequence to generate a result, and determining, based on the result, whether the first flow and the second flow are generated by a single host of the network.

Abstract: A method, system and computer program product for accurately tracking the position of a mobile device. The microphone on a mobile device receives acoustic signals at a few selected frequencies from a device to be controlled by the mobile device. The frequency shifts are used to estimate the speed and distance traveled. The distance between the speakers of the device to be controlled is calibrated and the mobile device's initial position is narrowed down using its movement trajectory. Based on the information, the mobile device's new position is continuously tracked in real time. Hence, movement of the mobile device can be accurately tracked, thereby allowing the mobile device to be realized as a motion-based controller (e.g., mouse, game controller, controller for Internet of Things).

Abstract: A communication device provides a face detection module and a face recognition module. The face detection module detects faces in a photo input by a user. The face recognition module searches the detected faces in a storage system of the communication device. If the detected faces do not exist in the storage system, the communication device prompts the user to edit communication information of the detected faces. If the user wants to dial a phone number, the communication device searches the storage system for the phone number of a selected face in a photo and dials the phone number. If a phone number is calling in, the communication device displays a photo corresponding to the phone number, and highlights a face corresponding to the phone number.

Abstract: A communication device provides a face detection module and a face recognition module. The face detection module detects faces in a photo input by a user. The face recognition module searches the detected faces in a storage system of the communication device. If the detected faces do not exist in the storage system, the communication device prompts the user to edit communication information of the detected faces. If the user wants to dial a phone number, the communication device searches the storage system for the phone number of a selected face in a photo and dials the phone number. If a phone number is calling in, the communication device displays a photo corresponding to the phone number, and highlights a face corresponding to the phone number.

Abstract: A communication device provides a face detection module and a face recognition module. The face detection module detects faces in a photo input by a user. The face recognition module searches the detected faces in a storage system of the communication device. If the detected faces do not exist in the storage system, the communication device prompts the user to edit communication information of the detected faces. If the user wants to dial a phone number, the communication device searches the storage system for the phone number of a selected face in a photo and dials the phone number. If a phone number is calling in, the communication device displays a photo corresponding to the phone number, and highlights a face corresponding to the phone number.

Abstract: A communication device provides a face detection module and a face recognition module. The face detection module detects faces in a photo input by a user. The face recognition module searches the detected faces in a storage system of the communication device. If the detected faces do not exist in the storage system, the communication device prompts the user to edit communication information of the detected faces. If the user wants to dial a phone number, the communication device searches the storage system for the phone number of a selected face in a photo and dials the phone number. If a phone number is calling in, the communication device displays a photo corresponding to the phone number, and highlights a face corresponding to the phone number.