236results about How to "Avoid detours" patented technology

The invention discloses a method for recognizing unknown roads in a current navigation map and carrying out navigation on the unknown roads. The method comprises the following steps: (1) collecting and extracting information of unknown roads: obtaining the initial driving track data through track collection, processing and analyzing the track data to extract the information of unknown roads, integrating the unknown roads into known roads, and providing the map for navigation; (2) carrying out navigation on unknown roads: after the information of unknown roads is obtained, calculating the navigation information (turn-around direction and turn-around distance) of unknown roads, combining realtime positioning, and matching the realtime position to the current unknown roads to realize realtime navigation. The provided method can extract the information of unlabelled roads, which exist on a navigation map, through historical tracks, conveniently navigates drivers on the unknown roads, avoids the phenomenon that the drivers are detoured or cannot reach the destination due to slow update of navigation map, and is suitable for the field of logistics distribution.

The invention relates to a vehicle navigation method which can automatically correct navigation path, especially a traffic control method for transmitting navigation instruction to the vehicle with planet positioning and communicating devices, wherein said method comprises: the navigation terminal of vehicle receives and stores the navigation path data of group ground mark sequence provided by the navigation center; when driving, the navigation terminal, based on present ground mark, judges if the driving direction is normal and the bias amount with present navigation road, and if said vehicle is deflected from present navigation path, sends vehicle recognize code and present position to the navigation center; the navigation center based on electric map calculates out the navigation path data of one group of ground mark sequence to be sent to the navigation terminal; and the navigation terminal via the navigation path data plays the instruction voice of present target ground mark and plays navigation instruction information; when the vehicle reaches target ground mark, the navigation terminal based on navigation path refreshes present target ground mark.

The invention provides an indoor navigation method and mobile equipment. According to the indoor navigation method, the mobile equipment determines the current indoor initial position of a user based on the operation of the user in a preset indoor map; a track route beginning with the indoor initial position is generated according to the movement path of the user, sensed by a motion sensor; when the return navigation operation of the user is acquired, a return path corresponding to the rack route is provided for the user. The indoor navigation method and the mobile equipment have the advantage that the problem that the user cannot find out the return path in a room is effectively solved.

The invention discloses an IGMP message transmitting method comprising that an IGMP agent device receives IGMP adding messages from a host; the IGMP agent device obtains the multicast source address corresponding to the IGMP adding messages, searches a uni-cast routing table of itself according to the multicast source address to obtain an outgoing interface of the next hop; if the outgoing interface is an uplink interface of IGMP, the IGMP agent device sends out the IGMP adding messages through the outgoing interface; if the outgoing interface is not an uplink interface of IGMP, the IGMP agent device selects an interface from the IGMP uplink interfaces of itself and sends out the IGMP adding messages through the selected interface. The invention also discloses an IGMP agent device. The invention avoids rounding of multicast flows and realizes load-sharing between IGMP uplink interfaces.

The invention relates to a navigation method and a device capable of accurately searching points of interest around a navigation path. The method includes: inputting POI information; performing POI searching along the navigation path so that a structure of fish bones is formed between the positions of the searched POI information and the current navigation path; establishing corresponding navigation paths; displaying the navigation paths having the structure of the fish bones and navigating. The device comprises an inputting module used for inputting the POI information; a navigation path establishing module used for performing POI searching along the navigation path so that the structure of fish bones is formed between the positions of the searched POI information and the navigation path and is used for establishing the corresponding navigation paths; and a navigation module used for displaying the navigation paths having the structure of the fish bones and navigating. The method and the device can avoid detour caused by a large difference between the actual path and a linear distance.

The invention discloses a method for switching a terminal and a corresponding communication network. The communication network comprises a wireless side network element, an access gateway which is connected between the wireless network element and a packet data network, a mobility management node and an identity position register. In the process of switching the terminal, when a target access gateway different from the original access gateway is determined, the target access gateway allocates the identifier of a new position for the terminal and saves the mapping information of the identifier of the identity of the terminal and the identifier of the new position; a target mobility management node or the target access gateway initiates registration and updates the identifier of the position of the terminal in the identity position register to which the terminal belongs; and the terminal is switched from the original wireless side network element to a target wireless side network element, and is connected to the packet data network by the target wireless side network element and the target access gateway, so that data messages is encapsulated and forwarded between the terminal and a communication opposite end. Through the invention, the route detours of data packets can be reduced, transmission delay and bandwidth waste can be lowered.

The invention discloses a method and a device for determining an assembly area. The method comprises the following steps: according to positions of a first user and a second user as well as a target position, generating a first path, and determining a candidate position corresponding to the position of the first user; according to the candidate position, the target position and the position of the second user, generating a second path, and determining the candidate position to be the assembly area for going to the target position by the first user and the second user when the second path is determined to be shorter than the first path. Compared with the prior art, the method, provided by the invention, for determining the assembly area can determine an appropriate assembly area for users of both sides, so that convenience of the users of both sides when going to the assembly area is enhanced, and travel distance and travel time can be reduced.

The invention relates to the technical field of mobile communication, in particular technology for sending push messages in multimedia message service. The invention discloses a method, a device and a system for sending the push messages in the multimedia message service to solve the problem of an alternate route when the push messages are transmitted and shorten the transmission time delay of multimedia messages. The method comprises the following steps: acquiring an HLR IP address to which a receiver terminal belongs after a receiver home location MMSC receives the multimedia messages which are sent to the receiver terminal; acquiring a receiver visitor location MSC information from a corresponding HLR according to the HLR IP address; and transmitting the push messages to the receiver terminal through a corresponding MSC according to the receiver visitor location MSC information. The invention simultaneously discloses an address inquiring method and an address inquiring device.

The invention discloses a method of realizing conditional call forwarding; the method comprises: ensuring that the called mobile terminal currently occurs internetworks roam according to the conditional call forwarding optimization routing ORCCF intelligent service when ensuring the called mobile terminal satisfying the call forwarding condition; releasing the speech channel of the calling terminal and the called mobile terminal; forwarding the calling from the calling terminal to the called mobile terminal into the forwarding number corresponding to the called mobile terminal from the calling terminal. The invention further discloses a system and device of realizing conditional call forwarding. The invention can avoid internetworks roam cost paying for call forwarding when the called user internetworks roams in the conditional call forwarding service.

The invention discloses a satellite network dynamic routing method based on queue monitoring and congestion prediction, which is suitable for a low-orbit satellite network with large network flow and frequent change, has high robustness, can meet the lightweight characteristic of the requirement of satellite computing resources, and belongs to the technical field of communication. The method is based on the dynamic routing algorithm, and can adapt to the network topology structure change caused by the rapid motion of the satellite. A queue monitoring method is used for monitoring the flow of the satellite, load rates can be calculated for different links connected with the same node, and therefore the situation that bandwidth resources of other available links of the node are wasted due to all flow bypassing caused by congestion of a certain link on the node is avoided. Meanwhile, load distribution can be carried out before congestion occurs by predicting the congestion which is about to occur in the queue, so that packet loss caused by the congestion which occurs already is reduced.

The invention discloses a multi-destination path navigation method, comprising the following steps: a) selecting an interest point through a mobile terminal to serve as a destination, sending a path navigation request to a server, and calculating a first navigation path through the server with the destination as end point; b) searching interest points with the same name or category within a preset range on the surrounding of the destination through the server; c) if interest points with the same name or category exist, using all searched interest points as end points, and continuing to calculate the navigation path to obtain a plurality of second navigation paths; d) respectively comparing the plurality of second navigation paths with the first navigation path, and if a second navigation path with better pre-estimated distance or pre-estimated time obviously exists, simultaneously sending the second navigation path and the first navigation path to the mobile terminal for selection. By adopting the multi-destination path navigation method provided by the invention, detour or time waste caused by improper destination selection of a user is avoided, and the navigation efficiency is greatly improved.

The invention relates to the technical field of logistics, in particular to a robot scheduling method and device, which are applied to a warehouse comprising a robot, and the method comprises the following steps: tracking a scheduling event, and filling a matching pool with the scheduling event, the scheduling event located in the matching pool being a target scheduling event; establishing a tripartite graph matching model according to the current position of the robot and the target scheduling event; according to the tripartite graph matching model, allocating a scheduling task to the robot,and the scheduling task at least comprising a task destination; and based on disjoint path conditions of time and space, determining a motion path and a motion state of the robot between the current position of the robot and the task destination of the scheduling task. According to the invention, the phenomena of detouring and congestion of the robot can be avoided, manual forced intervention is not needed, and the transportation efficiency of the robot is improved.

The invention discloses a mobility management method, a gateway node and a core network. During a relocation process between serving general packet radio service (GPRS) support nodes (SGSN), when an original gateway GPRS support node (GGSN) accessed to a terminal determines that it is needed to switch a GGSN according to an update packet data protocol (PDP) context request sent by a new SGSN of the terminal, the PDP context of the terminal is pushed to a new GGSN and first address information of the new GGSN is notified to the new SGSN; the new GGSN sends downlink data sent to the terminal to the new SGSN according to the address of the new SGSN contained in the PDP context of the terminal and tunnel endpoint identifier (TEID); and the new SGSN sends uplink data of the terminal to the new GGSN according to the first address information of the new GGSN. According to the invention, a location management function is realized; subscriber identifier and locator separation of the terminal is supported; and a routing circularity problem can be solved. Moreover, consistency of an existing relocation flow will not be influenced, thereby realizing good feasibility.

The invention relates to a three-dimensional emergency escape guiding method based on a wireless sensor network, which comprises the following steps: 1) node initiation, namely setting a weight <1, w> of each node, wherein 1 refers to the danger level of a floor where the node is positioned, and w refers to the danger level of the node in the floor, and setting the following parameters: a constant D, Ai, Ai and e[i, j]; and 2) guiding process, wherein when a sensor node x senses fire, the sensor node x sets the self weight as Adis and simultaneously broadcasts an emergency message to the network, and other nodes decide self guiding directions through calculation after receiving the emergency message; and when a sensor node y receives an emergency message sent by a neighbor node z, the sensor node y updates a weight of z in a neighbor list by Az, and directs to a neighbor with the minimum weight. The method can obtain the optimal escape path, and has good reliability.