283 results about "Bus priority" patented technology

An apparatus for packet-priority control for controlling a priority for packets input includes packet-priority setting means for setting hierarchically the priority for the packet input based on predetermined elements, and to adjust, taking into account other elements according to which the priority for the packet varies over time, the set priority, and wireless-resource allocating means for determining a packet for which a wireless resource is to be allocated in accordance with the adjusted priority.

A communication system (100) including a portable radio (130) selectively transmitting radio signals, a first vehicular repeater system (110) including a first vehicular repeater (112) adaptable to receive radio signals transmitted by the portable radio (130). A first mobile radio (114) is coupled to the first vehicular repeater (112) and is adaptable to retransmit signals received by the first vehicular repeater (112). The first vehicular repeater (112) has priority repeater status that signifies primary responsibility for repeating the radio signals transmitted by the portable radio (130). The first vehicular repeater (112) is also capable of responding to a notification signal received from a second vehicular repeater system (120) with a priority signal to indicate that it is to remain in priority repeater status such that the second vehicular repeater system (120) monitors to receive the priority signal by the first vehicular repeater (112) in order to determine its priority status.

The invention relates to a control method and a system for intersection signal timing guaranteeing the priority of buses. The system adopts an ultrahigh frequency RFID (Radio Frequency Identification) technique to achieve the remote recognition, acquisition and control of information of an onboard unit; and adjusting an intersection signal timing scheme through an optimization algorithm by collecting the information of buses in all direction of an intersection, so as to provide control of passing priority for buses. The control method solves the bus priority mode on common urban roads, and realizes the bus passing priority on the basis of maximizing the overall operation efficiency of vehicles at the intersection, so as to improve the operation efficiency of buses. In addition, the control method is low in cost and convenient to implement and becomes effective fast, and achieves the win-win of the bus priority and the overall operation efficiency of the intersection, so as to reduce delays of buses at urban intersections and ensure the punctuality of buses.

The invention discloses an uplink access method for distribution of lead codes for distinguishing the user priority in a TD-LTE / TD-LTE-A system. The unlink access method is a random access method for achieving different QoS services. The uplink access method includes the steps of (1) a lead code generation sorting stage; (2) a lead code distribution stage, wherein the lead codes are divided into the exclusive lead codes and the competitive lead codes for the first time; during secondary division, the competitive lead codes are divided into n groups according to the user group level number n, G1, G2, ...Gn-1 groups are the priority lead code groups and are used for backoff access of user groups corresponding to the priority lead code groups, and the Gn group is used for public access; an eNB enables the distribution scheme to be notified to all terminals in a broadcasting mode; (3) a random access stage, UE selects the front codes according to broadcast information to have access, a window does not receive any response in the waiting time, collision exists in the access, the terminals back off according to rules and reaccess is performed, and access fails when the maximum access time is exceeded. In random access based on competition, low delay and high throughout of high priority access can be guaranteed, and the requirements for different QoS services of the TD-LTE / TD-LTE-A system are met.

The invention relates to a path planning method, and specifically relates to a time window-based task segmentation multi-AGV path planning algorithm. The method comprises steps of first, generating anAGV working environment model; second, generating a task, and decomposing the task into multiple secondary stages according to different task types; and third, assigning the task by a task assigningmodule according to task priorities, picking the task out by a scheduling system from a high-priority queue, then determining which stage the task is in, if the task is not executed, assigning the task to closest AGV by using an improved A* algorithm, and setting the task state in first secondary stage; if the task is in the second or after stages, and planning a non-conflict shortest path for theAGV bound with the task by using the time widow algorithm by the scheduling system. Shortest and fastest paths are planned by using the improved A* algorithm and time window algorithm, so that the working efficiency is improved and calculation errors are reduced.

The invention discloses an intermittent bus lane control system and an intermittent bus lane control method. The control system comprises a vehicle detection unit, a global positioning system (GPS) bus positioning and detecting unit, a communication unit, a bus priority processing unit, a bus priority control unit and external display equipment, wherein the external display equipment comprises a road marking lamp and a variable information plate and is used for identifying the available state of an intermittent bus lane for social vehicles. The control method comprises a road main area control method and an intersection channelizing control method. The external display equipment is adopted to forbid the social vehicles from entering the intermittent bus lane within a particular time slot to ensure the priority of running of a bus, the dynamic characteristic of the utilization of road resources by public transport with low-frequency departure interval is taken into full consideration, the social vehicles are allowed to enter the intermittent bus lane for running under the condition of non-occupancy of the road resources by the bus, so the utilization rate of the road sources is improved, and the optimal configuration of the sources is realized.

A resource management device of the present invention, used in a system where at least one bus master is connected to each of a plurality of buses, includes: a bus arbitration section for arbitrating an amount of access to be made from the buses to a shared resource; an arbitration information management section for managing, as bus arbitration information, a bus priority order and a highest access priority pattern for ensuring a predetermined access bandwidth to the shared resource for each bus for an arbitration operation by the bus arbitration section; and a resource control section for controlling, based on characteristics of the shared resource, an access to the shared resource from the bus whose access request has been granted by the bus arbitration section. Thus, it is possible to guarantee a minimum bandwidth for access to the shared resource for each of the plurality of bus masters.

Systems and methods to communicate data frames are provided. A particular apparatus may include a first adapter having a first queue configured to store a data frame associated with a first priority. The adapter is configured to generate a first priority pause frame. A distributed virtual bridge may be coupled to the first adapter. The distributed virtual bridge may include an integrated switch router and a first transport layer module configured to provide a frame-based interface to the integrated switch router. The transport layer module may include a first buffer associated with the first priority. A first bridge element of the distributed virtual bridge may be coupled to the first adapter queue and to the first transport layer module. The first bridge element is configured to receive the first priority pause frame from the adapter and to communicate an interrupt signal to the first transport layer module to interrupt delivery of the data frame to the first queue.

The invention discloses a priority control method for a bus signal based on the green light demand, which aims at overcoming the defects in the existing priority control method for the bus signal that the arriving of a plurality of buses from different directions is not considered, and the interest balance between the buses and common motor vehicles, between the buses and pedestrians as well as between the buses and non-motor vehicles is not considered. According to the method, firstly, the situations of arriving, waiting and the like of vehicles are detected so as to generate a bus priority request; based on the condition, the green light holding degree at a green light phase and the green light demand at multiple red light phases are calculated through the combination of real-time traffic flow information, the real-time bus arriving information and the like; the green light holding degree and the greatest green light demand are compared to determine that whether the phases need to be switched; if the green light holding degree is more than or equal to the greatest green light demand, the current green light phase is continuously released; and the next phase is switched if not. The next phase can be a next phase in the fixed phase sequence circulation and also can be a phase of the greatest green light demand in the three red light phases with variable phase sequence.

The invention provides an intersection bus signal priority control system and control method based on C-V2X. Instrumentation from buses to a road traffic signal control machine and interconnection between a signal control center system and a bus operation management system are supported, dynamic priority adjustment of bus signals and active bus priority are achieved, the intersection bus signal priority control system comprises the road traffic signal control machine, traffic signal lamps, a road traffic signal control system, a RSU device, a C-V2X communication base station, a V2X server, a V2X application platform, the bus operation management system and a OBU device, the OBU device uploads bus information and sends the bus information to the road traffic signal control system, the roadtraffic signal control system is in interaction with the bus operation management system and sends bus signal priority requests and estimated time of arrival to the road traffic signal control machine, and the road traffic signal control machine makes decisions to respond to the priority requests or not to respond to the priority requests, gives out a priority control strategy to adjust phase positions of the traffic signal lamps and gives bus traffic priority.

A medical communication system for use in connection with providing medical care to patients at a health care facility. The system includes a central server, a database accessible by the server, and a plurality of mobile stations each carried by a health care practitioner for use within the facility. Each of the mobile stations are accessible within the health care facility by the server via wireless communication. The database provides storage of task information associated with patients receiving medical care at the facility, wherein the task information comprises information associated with a task, including identification of the task, task status, task priority, task assignment or any combination of these. Task information can be shared and updated on each of the mobile devices of the practitioner associated with the patient.

First and second wireless transceiver units operate in the same portion of the RF spectrum. An arbitration device controls when the first and second wireless transceiver units can operate. An interface connects the first transceiver unit to the arbitration device and receives requests for operation. The interface permits the transceiver unit o use one of N possible priority levels for requests. The transceiver associates a transceiver priority level to a series of packets which is chosen from a range of M possible priority levels. The transceiver unit sends a sequence of requests to operate to the arbitration device, each request in the sequence having a priority level chosen from the range of N possible priority levels. The average value of the priority levels used in the sequence depends on the associated transceiver priority level.

A lane setting at a road intersection and a corresponding traffic light control method. It does not distinguish between primary and secondary roads, so that the number of entrance and exit lanes of each main phase is kept equal; the entrance lanes are divided into three parts: "entrance guide lane", "peripheral guide lane" and "bus and right-turn lane"; according to the direction of travel Arrange the lanes, light groups, signal groups and phases symmetrically on the horizontal axis of the horizontal axis; at the intersection, run the main phase of A going straight——B going straight——A turning left (including U-turn)——B turning left (including U-turn); The "peripheral traffic lights" alternately operate the two phases of straight-going vehicles moving forward and left-turning (including U-turn) vehicles moving forward, and an evergreen phase and "electronic police" for directing right-turning vehicles and buses to pass; according to the number of left-turning vehicles Decide whether to control the clearance of pedestrian crossings in units of full or half-way. This method can make the number of lanes passing by each phase of the intersection reach the maximum on the basis of equilibrium, and is conducive to the priority of public transportation and the convenience of pedestrians.

This invention discloses a micro controller with bus and intercommunicated nodes for multi-host communication system, which contains data transmission unit, receiving unit, asynchronous series communication interface, bus monitor check unit, priority mark transmission unit, bus priority arbitration unit, priority mark filter unit, data / address identifying unit, wherein the asynchronous series communication interface connected with a multi-host interface whose another end connected with said bus. Said invention not only realizes point-to-point multi-host communication among plurality of equipment but also does not increase the occupation to software and hardware resource of MCU, and reduces cost and raises efficiency.

Systems, methods, and computer-readable media for priority based routing on an electronic device of data received from a processing subsystem are provided. In some embodiments, a method may include detecting on an electronic device that data received from a remote subsystem includes identifier information that is associated with a match element of an entry of a routing table, routing at least a portion of the data to a first priority destination identified by the entry, and, when the routing of the at least a portion of the data to the first priority destination identified by the entry is not successful, routing the at least a portion of the data to a second priority destination identified by the entry, wherein the second priority destination identified by the entry is different than the first priority destination identified by the entry.

The invention discloses a charging scheduling system based on an electric vehicle charging priority and a method thereof. The system comprises a child node apparatus and an anchor node device. The sub-node apparatus is installed on a child node charging pile and is used for collecting charging pile data. The anchor node device is installed on an anchor node charging pile and is used for data integration and processing, executing a charging scheduling algorithm, processing user feedback information and carrying out charging scheduling. According to a position of an anchor node, area division is performed. One anchor node manages several child nodes. Data collection and operation efficiency are increased. By using the charging scheduling algorithm, according to information of an electric vehicle and the charging pile, charging priority degree assessments are performed twice; global comparison is performed on a final priority degree assessment value; relative priorities of the electric vehicle on each reachable charging pile are determined so that global solution is realized. By using the system and the method in the invention, a utilization rate of a charging pile resource and charging efficiency of the electric vehicle are increased; and charging system performance of the electric vehicle is improved.

The invention discloses an access control method and device, relating to a communication technology. The method comprises the steps of: after receiving a rejection message returned by a network side, starting a backoff timer, wherein the rejection message carries a backoff level indication; and prohibiting a terminal from accessing a network through an access request with set priority within set time. Because of no rejection of all priorities of access requests, when a user accesses the network according to an access request with a normal priority or access request with higher priority, the accessing can not be prohibited by the backoff timer with lower priority, thus accessing with normal priority can be initiated after the terminal with low access priority is rejected from being accessed.

The invention relates to a control system for automatically accomplishing bus priority according to traffic stream change, which comprises a vehicle detecting subsystem, a traffic data predicting subsystem, a vehicle signal processing subsystem, a traffic signal control subsystem and a communication subsystem, wherein the vehicle detecting subsystem is used for detecting the traffic conditions on a common traffic lane and a lane special for the buses within a period of time through corresponding detecting equipment, and counting the numbers of vehicles passing by; the traffic data predicting subsystem is used for predicting the traffic flow data in a next period of time by utilizing the flow data of the current period of time; the vehicle signal processing subsystem is used for generating a specific bus signal priority control policy and a signal timing scheme; the traffic signal control subsystem is used for controlling various signal lights of a crossing according to the control policy; and the communication subsystem is used for transmitting detecting signals to the traffic data predicting subsystem. The control system can effectively relieve the conflicts between the bus priority and common social vehicles and pedestrian pass.

The invention relates to a high-concurrency service resource allocation method based on business priorities. The method comprises the steps of carrying out starting; receiving business requests of users by a dispatcher; generating processes for received business requests by the dispatcher; forwarding the received business requests in a polling mode; when servers receive the business requests, finishing the processes; when all servers pause access of the requests, storing the business requests of the user not received by the servers and inserting the business requests to corresponding queues; and setting time intervals t of retransmitting the business request queues according to the priorities, every other time t, retransmitting the business request queues in the polling mode until idle servers occur and all business request queues are received, and finishing the processes. According to the method, resources are allocated relatively uniformly, the realization is simple, and when the service resources are in shortage, the business with high priorities can obtain the service resources preferentially.

The present invention provides a PCI Bus Diagnostic Monitor which eliminates the need to hook up a logic analyzer and manually analyze the data passing on the PCI Bus. The present invention provides an accurate analysis of the PCI Bus master's utilization and / or latency time to acquire the PCI Bus by controlling a 12-bit counter and analyzing count values at appropriate times, e.g., between the time the PCI Bus request is output and the time that the data transfer begins, and the time between when the data transfer begins and when the data transfer ends. The data corresponding to a large number of data transfers may be buffered and analyzed to provide performance statistics relating to the PCI Bus. The analysis can be performed in lightly loaded, typically loaded, and heavily loaded PCI bus situations to fully and accurately test real-world capabilities of new peripherals, particular combinations of peripherals, and statistics relating to customized usage of a host system. The accurate statistics relating to the performance of the PCI Bus will also allow a system designer to assign and / or reassign PCI Bus priorities for various bus agents or peripherals.

The invention discloses an intersection bus signal priority control system. The intersection bus signal priority control system comprises a bus priority signal generation device connected with a traffic signal controller at an intersection, an RFID reader arranged at a set distance from an intersection stopping line in the vehicle coming direction, and a vehicle electronic label arranged on a front windshield of a vehicle. The intersection bus signal priority control system is characterized in that the RFID reader accurately reads the vehicle electronic label on a bus approaching the intersection, obtains accurate bus registration information and then sends a bus signal priority request and an expected arrival time to the traffic signal controller so as to enable the traffic signal controller to optimize and adjust signal phase times, so that intersection-level signal control provides time priority to buses, and waiting delays of the buses at the intersection are reduced. The intersection bus signal priority control system is adaptable to signal priority control of an urban bus and also adaptable to signal priority control of a high capacity bus such as a BRT, a trolleybus and a tramcar. In addition, the existing traffic signal controller and traffic signal control system do not need to be reconstructed, and the intersection bus signal priority control system has a wide application prospect.

The invention discloses a lane variable time division multiplexing method guaranteeing bus priority. LED signal indicating lamps used for indicating whether social vehicles can be driven into a bus lane are arranged between the first to the Nth road segments; a vehicle recognition unit used for detecting existence of passing of buses registered in advance is arranged on each road segment, and the green light of the LED signal indicating lamp of the Nth road segment is on if the vehicle recognition unit of the Nth road segment does not recognize that there is no bus driven on the (N-1)th road segment; and a control unit display conversion of the LED signal indicating lamps. The invention also provides a lane variable time division multiplexing system guaranteeing the bus priority. Opening and closing of the bus lane are dynamically controlled through the vehicle recognition units and the LED signal indicating lamps so that the passage capacity of the road can be effectively enhanced; besides, green and red switching of the LED signal indicating lamps is controlled by responding to any one of the two conditions through the control unit so that the congestion situation of the social vehicles on the bus lane can be effectively avoided.

The invention relates to a bus priority signal control method. The urban road traffic bus priority signal control method is that oriented reader-writers are installed at the crossroads, active electronic tags are installed in buses, and when the buses run close to the crossroads, the oriented reader-writers and the active electronic tags in buses act in cooperation with each other, interact with a traffic signal control system in a traffic command center and perform bus passing priority control by controlling traffic signal lamps at the crossroads: (1) green lamp time prolonging: when green lamps at the crossroads are about to change, the green lamp time in the advancing direction is prolonged to enable the buses about to arrive to pass the crossroads; (2) read lamp time breaking or calling for passing priority: after the current green lamp phase waits for the shortest green lamp time, existing red lamps are switched instantly for the buses arrived at a red lamp phase, bus priority green lamps are turned on in advance for bus passing. By adopting the urban road traffic bus priority signal control method, the bus operation speed can be effectively improved, the bus line travel time is reduced practically, and overall influence on other traffic flows is small.

The invention discloses a bus priority signal control method based on multiple requests in a vehicle networking environment, aiming at overcoming problems that a current bus priority signal control method has low prediction precision and cannot satisfy priority of multiple buses. The bus priority signal control method based on multiple requests in the vehicle networking environment includes the following steps: 1, collecting real-time information in the vehicle networking environment, and detecting multiple bus priority requests; 2, determining running statuses of the buses and determining whether the bus is behind a timetable; 3, predicting the time when the bus arrives at an intersection; 4, determining a signal control scheme that satisfies priority of multiple buses, including 1) solving green time required to meet the priority requests of multiple buses, 2) calculating a bus priority signal control scheme for a current period, 3) solving a signal control scheme of the next periodbased on a green time compensation algorithm, 4) calculating total delay of the intersection of each signal control scheme, and selecting the priority signal control scheme with the smallest delay.

This invention is a high-level language to specify electronic system design patterns for functional verification. This invention includes automatic translation of the high-level language specification into assertion code from these patterns and temporal properties for design verification. This eliminates the need to code extra RTL to handle features such as pipelines and bus priorities. Such common features are specified only in high-level patterns and temporal properties to be verified. This is advantageous because less verification code to be written, automated synthesis of assertions enforces monitor-style of writing assertions rather than generator-style, and the high-level code can be seamlessly migrated to another verification tool by producing another code generator for the new assertion language.

The invention discloses a bus priority signal control method not involved with a bus lane. The bus priority signal control method not involved with the bus lane comprises the steps that (1) a bus priority request is detected, (2) bus arrival information is extracted, (3) the time for a bus to reach a stop line of an intersection is estimated by a signal control machine according to the serial number information, the positional information, the direction information and the speed information of the bus, (4) the priority time required by a phase position is calculated, (5) the shortest green time and the longest green time of the phase position are set, and (6) the signal control machine controls a signal lamp to be turned on according to a bus priority signal control rule. The bus priority signal control method not involved with the bus lane is suitable for being used under the condition that buses come in multiple directions or under the condition that multiple buses come in one direction, calculation is conducted based on the floating car theory, so that when certain buses stop or new bus priority requests are received, the bus arrival time can be re-calculated and updated, the strategy is adjusted rapidly, the calculation speed is high, the real-time performance is high, and the accuracy is high.

The invention relates to a signal control system capable of realizing bus priority without a bus lane. When a priority signal processing unit in the signal control system determines that a bus appears in the first row of vehicles at an intersection, the priority signal processing unit further calls a proportional value of the number of buses to the total number of vehicles and a proportional threshold value stored in the priority signal processing unit to compare, and issues control instructions according to comparison result. In the control system disclosed by the invention, by setting the proportional threshold value, when the proportional value of the number of the buses to the total number of the vehicles is in a range of each interval, the longest delay time of a green light is limited, thus the problem that when more buses sequentially stop at the intersection, the transportation of other normal social vehicles is seriously affected by the bus priority strategy can be effectively avoided, the intersection delay of the buses is effectively reduced, and simultaneously the impact on the normal social vehicles is minimized.