160 results about "Broadcast range" patented technology

A data processing system and method are disclosed for disabling a portable computer in response to the portable computer being moved outside of an authorized area of use. An authorized, geographical area of use is established. The authorized, geographical area is any geographical area capable of being defined. The geographical area is not limited to areas within an enclosure, and is not bounded by a transmitter's broadcast range. A determination is made regarding whether the portable computer is located outside of the authorized area. If the portable computer is moved outside of the authorized area, the portable computer is disabled. The portable computer is inoperable when disabled.

A method is provided for suppressing redundant packet message transmissions a multi-hop message delivery system. The vehicle receives message packets from any one of a plurality of vehicles within a broadcast range of the vehicle. The vehicle includes a buffer for holding the received message packets prior to re-broadcasting the message packets. A first estimation value is calculated as a function of a signal strength of the vehicle receiver for a respective received message packet. A second estimation value is calculated as a function of the buffer. A re-broadcast estimation threshold value is determined as a function of the first estimation value and the second estimation value. At least one triggering function is provided for generating an at least one triggering indicator. The respective message packet is re-broadcast in response to the re-broadcast estimation threshold value satisfying the at least one triggering indicator.

A wireless network having an architecture that resembles a peer-to-peer network has two types of nodes, a first sender type node and a second receiver / relay type node. The network may be used in a medical instrumentation environment whereby the first type node may be wireless devices that could monitor physical parameters of a patient such as for example wireless oximeters. The second type node are mobile wireless communicators that are adapted to receive the data from the wireless devices if they are within the transmission range of the wireless devices. After an aggregation process involving the received data, each of the node communicators broadcasts or disseminates its most up to date data onto the network. Any other relay communicator node in the network that is within the broadcast range of a broadcasting communicator node would receive the up to date data. This makes it possible for communicators that are out of the transmitting range of a wireless device to be apprized of the condition of the patient being monitored by the wireless device. Each communicator in the network is capable of receiving and displaying data from a plurality of wireless devices.

A system and method for delivering geographically restricted content, including but not limited to over-air broadcast programming, to a recipient over a computer network, namely the Internet. The content is only delivered over the computer network if the recipient's computer or network device requesting the content over the network is verified to be located in the geographically restricted area. A conventional tuner is employed by the recipient's computer to receive one or more over-air signals having a broadcast range deemed to be synonymous with the geographically restricted area for the requested content. If the tuner is able to receive such over-air signal(s), the requested content is delivered over the network to the recipient's computer. This is because the recipient is known to be physically located in the geographically restricted area by the ability of the tuner to receive the over-air signal(s).

The invention discloses a BLE (Bluetooth Low Energy) device. The configuration of the BLE device is that an iBeacon base station is simulated, a custom iBeacon message is outwards broadcasted, and Bluetooth communication with an IOS device within the broadcasting range of the iBeacon message is built so as to conduct data interaction with a specific application program in the IOS device, wherein the iBeacon message comprises a universally unique identifier corresponding to the specific application program; the universally unique identifier is used for enabling the IOS device to automatically start up the specific application program to build the Bluetooth communication with the BLE device; the IOS system version of the IOS device is IOS 7.1 or above. The invention further provides an information safety device and an automatic start-up method of an application program. The BLE device, the information safety device and the automatic start-up method can realize the aims of the automatic start-up of the application program and the Bluetooth communication with the BLE device, solve the problems of being low in accuracy, low in efficiency, poor in user experience and the like when a plurality of devices simultaneously pair with each other, and meanwhile can prevent others from monitoring to a certain extent and improve communication security.

A wireless network having an architecture that resembles a peer-to-peer network has two types of nodes, a first sender type node and a second receiver / relay type node. The network may be used in a medical instrumentation environment whereby the first type node may be wireless devices that could monitor physical parameters of a patient such as for example wireless oximeters. The second type node are mobile wireless communicators that are adapted to receive the data from the wireless devices if they are within the transmission range of the wireless devices. After an aggregation process involving the received data, each of the node communicators broadcasts or disseminates its most up to date data onto the network. Any other relay communicator node in the network that is within the broadcast range of a broadcasting communicator node would receive the up to date data. This makes it possible for communicators that are out of the transmitting range of a wireless device to be apprized of the condition of the patient being monitored by the wireless device. Each communicator in the network is capable of receiving and displaying data from a plurality of wireless devices.

A wireless network having an architecture that resembles a peer-to-peer network has two types of nodes, a first sender type node and a second receiver / relay type node. The network may be used in a medical instrumentation environment whereby the first type node may be wireless devices that could monitor physical parameters of a patient such as for example wireless oximeters. The second type node are mobile wireless communicators that are adapted to receive the data from the wireless devices if they are within the transmission range of the wireless devices. After an aggregation process involving the received data, each of the node communicators broadcasts or disseminates its most up to date data onto the network. Any other relay communicator node in the network that is within the broadcast range of a broadcasting communicator node would receive the up to date data. This makes it possible for communicators that are out of the transmitting range of a wireless device to be apprized of the condition of the patient being monitored by the wireless device. Each communicator in the network is capable of receiving and displaying data from a plurality of wireless devices.

The invention provides a method for order allocation. The method comprises the following steps of after receiving a cab hailing request of UE (User Equipment), generating an order according to the cab hailing request; obtaining at least one terminal in an order broadcasting range according to starting of the order; aiming at each obtained terminal, determining distance between the current position of the terminal and the starting of the order; obtaining order capturing probability of the terminal according to the distance and the current time information through a preset order capturing probability prediction model; and allocating the order according to the order capturing probability of at least one terminal. The invention further provides a device for order allocation, comprising an order generation unit, a terminal screening unit, a distance determining unit, an order capturing probability prediction unit and an order allocation unit. According to the invention, in an order allocation stage, the order broadcasting range of different area and different period of time is limited, thus, waiting time of passengers and deadhead time of drivers are reduced effectively, and experience of the passengers and the drivers is improved.

A system for alerting motorists about an approaching emergency vehicle is disclosed, which broadcasts an emergency warning message that motorists can readily hear and use to determine the approach direction of the emergency vehicle. For example, a system for alerting motorists about an approaching emergency vehicle is disclosed, which includes a transmitter unit for the emergency vehicle that broadcasts an emergency warning message over a short range radio frequency, a GPS receiver unit for the emergency vehicle that provides the emergency vehicle's position, and a processor unit that regularly retrieves the emergency vehicle's position data, determines the emergency vehicle's heading, and generates the emergency warning message including pertinent position and heading information. Thus, a motorist within broadcast range can receive and hear the emergency warning message on the radio of the motorist's vehicle, and ascertain from the message the nearness and approach direction of the emergency vehicle.

The invention relates to a multimedia resource recommendation method and device, and relates to the technical field of multimedia. The recommendation method includes the steps that user viewing data, in the test broadcast range, of multimedia resources to be recommended are obtained; the user viewing data are analyzed and processed to obtain user behavior data corresponding to the multimedia resources to be recommended; according to the user behavior data corresponding to the multimedia resources to be recommended, first user preference degree scores of the multimedia resources to be recommended are calculated; second user preference degree scores of multiple recommended multimedia resources are obtained; according to the first user preference degree scores and the second user preference degree scores, the multimedia resources to be recommended are recommended. The user preference degree scores of the multimedia resources to be recommended are obtained through calculation according to the user behavior data corresponding to the multimedia resources to be recommended, and the user behavior data can reflect the real preference degree of a user to the multimedia resources, so that the recommendation accuracy is high when the multimedia resources to be recommended are recommended according to the user preference degree scores.

The invention provides a data transmission method and device for vehicle communication, a base station, and network side equipment. The method comprises the steps: receiving vehicle communication data transmitted by a transmitting terminal; judging which one of a unicast mode and a broadcast mode is used for transmitting vehicle communication data according to the number of receiving terminals for receiving vehicle communication data or prompt information transmitted by the transmitting terminal; directly transmitting the vehicle communication data to the receiving terminal in a unicast mode when the unicast mode is determined to be employed for transmitting the vehicle communication data; determining a needed broadcast range of the vehicle communication data when the broadcast mode is determined to be employed for transmitting the vehicle communication data, and carrying out the transmission of the vehicle communication data in a mode of single-cell broadcast or multi-cell broadcast according to the needed broadcast range of the vehicle communication data. According to the technical scheme of the invention, the method achieves the support for a V2V transmission mechanism based on a Uu interface, and can achieve high-efficiency V2V communication saving the transmission resources.

The invention relates to a vehicle-mounted network data distribution method on the basis of collaborative optimization sign bit encoding. The vehicle-mounted network data distribution method comprises the following steps that a data distribution center distributes data on vehicle nodes in a selected region in a broadcasting manner by arranged base stations, wherein each vehicle node is provided with a single radio wireless receiver and each base station has the same source file F obtained from the data distribution center; sign bit encoding is applied to encode the distributed data and when the vehicle nodes are positioned in the broadcasting range of the base stations, the base stations broadcast the data to the vehicle nodes in a circulating manner; and when the vehicle nodes are positioned beyond the broadcasting range of the base station, the vehicle nodes are self-organized mutually to form a mobile network and a group of relay nodes are selected among the vehicle nodes so as to collaboratively distribute the data among the vehicle nodes and implement data collaborative broadcasting distribution on the basis of encoding. The method disclosed by the invention can be more flexibly suitable for the dynamic environment of the vehicle-mounted network; and compared with a conventional network encoding mode, the vehicle-mounted network data distribution method has high encoding rate, large network throughput and short distribution time delay.

A broadcasting device includes a broadcasting unit configured to broadcast positional information indicating an indoor position of the broadcasting device to a predetermined area, wherein the broadcasting unit broadcasts range information indicating the size of the predetermined area together with the positional information.

The invention discloses a position interaction talkback terminal based on an interphone network and an application system thereof, relates to the technical field of wireless communication, and overcomes the technical defects that the conventional interphone cannot realize position sharing and position monitoring between talkback terminals and performs positioning depending on a relay station or a base station and a background server and the like. The position interaction talkback terminal comprises a talkback communication module, and an interphone antenna connected with the talkback communication module, and is characterized by also comprising a global position system (GPS) positioning module and a geographic information system (GIS) engine system module which are connected with the talkback communication module, an electronic map database and a liquid crystal display (LCD) module which are connected with the GIS engine system module, and a GPS antenna connected with a GPS positioning module. By adopting the talkback terminal, the positions of each member in an outdoor team or an activity group can be timely shared in the team, the operating convenience can be provided, or the fun of the activity is improved. The broadcast range of a single talkback terminal is exceeded, even the talkback terminal required to be monitored can be monitored under the condition that the sum of the broadcast ranges of multiple talkback terminals is exceeded.

The invention provides a transmitting method and system for wireless multimedia broadcasting system, where the method includes the following steps: according to the property of each channel data that needs transmitting, determining logic channel and modulating solution needed to transmit each channel data; allocating the logic channel to each channel data and making coding interlace on the logic channel; making mapping and frame-forming operation on the signal through the coding interlace; scrambling operation; modulating the signal; able to combine many logic channels according to the transmitted data property, or dividing them each into many subchannels, where the modulating types and coding modes for these logic channels are mutually independent. Thus it realizes flexible data channel configuration according to different application requirements, provides coding protection at different grades, and provides multiple services largely beyond the range of one-way broadcast. It assures the performance and implementing efficiency of data transmission in different packet lengths and provides an open platform for wideband wireless communication.

A cell broadcasting service system includes: a terminal for generating a short message service (SMS) type message and a cell broadcasting service (CBS) type message; an SMS center for transmitting a CBS type message to a CB center when receiving the CBS type message from the terminal; and a CB center for broadcasting a received message to a corresponding range area by referring to broadcast range information of the message when receiving the message from the SMS center. By assigning a CB ID to a specific subscriber group (a small circles or a local group), a general subscriber can broadcast a short message in the position of the CB entity. In addition, various get-together information and local information can be easily provided to subscribers of a group located within a broadcast range, and more efficient and substantial information can be provided at a low cost.

The invention discloses a caching algorithm of scalable coded adaptive streaming media content in a mobile CCN. The algorithm includes: a method for calculating the potential energy of the layered cache, evaluating the priority of caching a data packet of an SVC layered content; the cache information table CPVT records cache decision-related information, and the nodes cooperate to maintain and update it; After the data packets broadcast by the one-hop node, the hierarchical cache potential energy of each data packet is calculated according to the CPVT information. If it is higher than the specified threshold, it will be cached, otherwise it will be discarded. The present invention can be used for caching operation of mobile CCN's self-adaptive streaming media service, and actively caches data packets with high SVC layered caching potential within the broadcast range, so that mobile users can obtain nearby SVC layered content that can ensure smooth playback, and improve mobile The user's quality of experience watching a video.

A method for communicating to a recipient transceiver from a plurality of transceivers located within the broadcast range of the recipient transceiver includes: transmitting a communication at a first power level such that only a first group of transceivers receive the broadcast, the communication including a command causing each of the first group of transceivers not to respond to a subsequent broadcast; and subsequent thereto, transmitting a communication at a second power level greater than the first power level such that a second group of transceivers greater than and including the first group of transceivers receive the broadcast, but such that only a limited number of transceivers of the second group respond to the broadcast, the limited number of transceivers excluding the first group of transceivers. Each of the plurality of transceivers is associated with a respective sensor for acquiring data and transmitting the data to the recipient transceiver.

The invention discloses a system and method for broadcasting a message in a structural peer-to-peer network to complete message broadcasting in the structural peer-to-peer network. In the method, a message is broadcast stage by stage from an initial node, and each stage at least comprises a broadcasting node; in each stage, the broadcasting node determines the broadcasting range of the current stage, indicates the broadcasting range of the next stage and broadcasts the message to a receiving node of the current stage in accordance with the broadcasting range of the current stage, and after receiving the message, the receiving node of the current stage is used as the broadcasting node of the next stage to continue to broadcast the message; and when no receiving node in a certain stage can be used by the broadcasting node for determining the broadcasting range of the current stage, the broadcasting node of the current stage stops broadcasting, wherein the broadcasting node in the first stage is the initial node. The invention realizes that the message can be quickly broadcast to all the nodes in the network without relevance to specific network topology and routing protocols, thereby being applicable to multiple networks based on distributed hash tables.

The invention discloses a traffic information issuing method, and belongs to the field of intelligent traffic. The method comprises that: a road network, traffic information of each road segment in the road network, and a set of traffic information influence ranges are arranged; a traffic information influence grade and a broadcast range are arranged according to the traffic information and the traffic information influence range; the traffic information is acquired, and the traffic information influence grade and the broadcast range are confirmed according to arrangement and stored; and the traffic information is broadcasted according to user arrangement. A space-time change model of the traffic information influence range is defined, and influence degree of the traffic information is defined in a grading way; and the traffic information acts as the customized issuing main body so that problems, including differences of the traffic information influence range cannot be adapted, algorithm execution efficiency is poor, etc., which are caused by the fact that vehicles act as the customized traffic information acquisition main bodies in the prior art are solved in one action, and the customized broadcast scheme based on shunting points with great expansibility is given.

The embodiment of the invention discloses a method and device for protecting pedestrians from crossing zebra stripes and equipment. The method comprises the steps that whether there are the pedestrians on the target zebra stripes or not is monitored; when it is monitored that there are the pedestrians on the target zebra stripes, early warning information is generated; the early warning information is broadcasted, so that when a vehicle enters within a preset range nearby the zebra stripes, a vehicle-mounted unit of the vehicle receives the early warning information, and a driver is reminded according to the early warning information; or when the vehicle is on automatic pilot, the vehicle-mounted unit sends the early warning information to a vehicle-mounted terminal of the vehicle so as tocontrol the vehicle to avoid the pedestrians. The early warning information is generated when it is monitored that there are the pedestrians on the zebra stripes through a monitoring device, the early warning information is broadcasted, so that when the vehicle within the broadcast range obtains the early warning information through the vehicle-mounted unit, the driver can be reminded, or when the vehicle is on automatic pilot, deceleration or braking or other activities of the vehicle are controlled, and therefore, the pedestrians can be protected from crossing the zebra stripes.

Systems and methods for detecting the presence or absence of a user at a facility are provided. A user device can be configured to communicate with one or more appliances located at the facility. In particular, the user device can be configured to broadcast one or more beacon advertisements, which can be detected by the one or more appliances when located within the broadcast range of the user device. Further, the user device can be configured to broadcast one or more multicast domain name system (mDNS) queries over a local area network. The mDNS queries can be received by the one or more appliances. Such signals can be used to determine the presence or absence of the user at the facility. In particular, such signals can be used independently to detect presence, or such signals can be used in conjunction to detect presence.

The present invention provides a wireless audio-video transmission apparatus. This apparatus can convert the required audio-video signal from the cable line into wireless signal for broadcast. The receivers located within broadcast range can receive the required wireless signal.

A wireless network having an architecture that resembles a peer-to-peer network has two types of nodes, a first sender type node and a second receiver / relay type node. The network may be used in a medical instrumentation environment whereby the first type node may be wireless devices that could monitor physical parameters of a patient such as for example wireless oximeters. The second type node are mobile wireless communicators that are adapted to receive the data from the wireless devices if they are within the transmission range of the wireless devices. After an aggregation process involving the received data, each of the node communicators broadcasts or disseminates its most up to date data onto the network. Any other relay communicator node in the network that is within the broadcast range of a broadcasting communicator node would receive the up to date data. This makes it possible for communicators that are out of the transmitting range of a wireless device to be apprized of the condition of the patient being monitored by the wireless device. Each communicator in the network is capable of receiving and displaying data from a plurality of wireless devices.

Embodiments of the application disclose a parking space indication method, apparatus and system, and a terminal, and belongs to the technical field of terminals. The method includes steps: receiving abluetooth signal broadcasted by at least one parking space bluetooth device, wherein the bluetooth signal includes parking space information and state information of a corresponding parking space; displaying each parking space in a user interface according to the bluetooth signal; determining a first position of the terminal according to bluetooth positioning signals broadcasted by at least threebluetooth positioning devices when receiving a selection signal of a target parking space in the user interface; obtaining a second position of a target parking space bluetooth device corresponding to the target parking space; and displaying parking space indication information in the user interface according to the first position and the second position. The broadcasting range of the bluetooth signals is larger than a user visual range, according to the parking space indication method, apparatus and system, and the terminal, the parking space state indication with a larger range can be realized through bluetooth, users can rapidly determine idle parking spaces and go to the target parking spaces according to the parking space indication information, and the parking efficiency is improved.

A method and system broadcasts an alert packet in a wireless multi-hop network of nodes. An event is sensed in a source node of the network, and an alert packet is broadcast in response to sensing the event. The alert packet is received in a set of candidate nodes within a broadcast range of the source node. Each candidate node infers a distance between the candidate node and the source node based on a receive power of the received alert packet, and determines a priority for rebroadcasting the alert packet, wherein the priority is based on the distance to minimizing a probability of collisions while rebroadcasting the alert packet and extend a range of the rebroadcasting.