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142results about How to "Reduce detours" patented technology

Method and device for achieving virtual machine communication

The invention provides a method and a device, a first interchanger receives an ARP response from an SDN controller, the ARP response carries an MAC address of a destination gateway, the first interchanger acquires a VTEP message corresponding to the MAC address of the destination gateway in dependence on the MAC address of the destination gateway, and a router corresponding to the VTEP message is arranged in a first data center; the first interchanger sends an IP message to the router corresponding to the VTEP message in dependence on the VTEP message, and therefore the router corresponding to the VTEP message sends the IP message to a second virtual machine through the router and a channel of a second interchanger. Therefore, the SDN controller answers instead, the transmission bandwidth occupied by broadcasting messages is reduced, and the messages only pass through the router in the first data center, and the messages are prevented from detouring among data centers.
Owner:HUAWEI TECH CO LTD

Block chain-based online taxi-hailing service system

InactiveCN107045650AReal-time time-consumingReduce uncertain attribute problemsReservationsTransmissionArtificial Intelligence SystemMobile client
The invention discloses a block chain-based online taxi-hailing service system. The system includes a traffic cloud database, a traffic cloud artificial intelligence system (TAI) and a mobile client. With the block chain-based online taxi-hailing service system adopted, a decentralized, trustless, collectively maintained, asymmetric cryptography reliable database basic infrastructure and underlying internet protocol can be provided for traffic cloud; and a mobile SaaS (Software-as-a-Service) application pattern, a distributed computing normal form and a group intelligence model which can establish high-degree connections for travelers based on time stamp, achieve travel resource allocation consensuses and provide services according to demands can be realized.
Owner:罗轶

Method and system for terminal handover in wireless communication system

A method and system for terminal switching in a wireless communication system are disclosed. A terminal accesses a packet data network through a packet data network gateway, when the terminal switches between gateways, the target gateway to which the terminal switches allocates a new Routing Identifier (RID) to the terminal, and stores a mapping relationship between the Access Identifier (AID) and the new RID of the terminal. The target gateway or the target mobility management entity (MME) of the terminal initiates a registration update request including the new RID of the terminal to the home Identity Location Register (ILR) of the terminal. After receiving the request, the home ILR of the terminal updates the stored AID-RID mapping information of the terminal according to the new RID of the terminal, and initiates a notification for updating the RID of the terminal to the opposite gateway and / or the opposite MME.
Owner:XIAN ZHONGXING NEW SOFTWARE

Parking guidance system based on LBS (location based service)

The invention discloses a parking guidance system based on LBS (location based service). The parking guidance system consists of a parking lot server side, a server and a client side, wherein, the parking lot server side comprises an exit sensor and an entrance sensor which are respectively arranged on lifting levers at an exit and an entrance of a parking lot, and the sensors collect parking space information of the parking lot in real time and send the information to the server; the client side acquires car position information through a positioning module and then sends the information to the server; and according to the received parking space information of the parking lot, the server selects three parking lots based on a near-to-far distance and low-to-high charges principle, and sends the position information of the parking lots to the client side. The parking guidance system based on the LBS has the characteristics of realizing convenient and fast parking, fully and reasonably utilizing resources and facilitating energy conservation and emission reduction.
Owner:无锡爱维特信息技术有限公司

Comprehensive designing method for urban public traffic system based on one-road-one-line straight-going mode

InactiveCN101225631ALow repetition factorReduce detoursRoadwaysIntegrated designTraffic flow
The invention relates to an integrated design approach for urban public transport system based on the mode of one road, one line and direct movement, as well as a configuration method for urban road and public transport system, in particular to an integrated design approach for urban public transport system based on the mode of one road, one line and direct movement. The integrated design approach is characterized in that: the roads are arranged into a grid shape, and a direct-movement bus line is arranged at one road; a plurality of bus stops are arranged at the crossroads, furthermore, the bus stop is close to the crosswalk at the crossroad. The integrated design approach aims at providing the integrated design approach for urban public transport system based on the mode of one road, one line and direct movement. The integrated design approach for urban public transport system based on the mode of one road has the advantages that: the transport efficiency for urban ground public transport system can be improved significantly; the bus travel time can be reduced; the interference between the buses and social vehicles also can be reduced; the interference between passengers and the traffic flow can be less, moreover, the safety of the transportation system can be improved.
Owner:SOUTHEAST UNIV

Message forwarding method and message forwarding device

Provided in an embodiment of the present invention are a packet forwarding method and device. The method comprises: a first network virtualization edge (NVE) receives a first packet transmitted by a first tenant end system (TES), the destination IP address of the first packet being the IP address of a second TES, the destination MAC address of the first packet being a gateway MAC address corresponding to the first NVE, the first TES and the second TES belonging to the same layer 3 VPN; the first NVE obtains an access VN ID of the first TES according to at least one of the first packet and the port information for receiving the first packet, and obtains the identifier of a layer 3 VPN instance of the first TES; the first NVE performs layer 2 termination on the first packet, looks up a route forwarding table corresponding to the identifier of the layer 3 VPN instance of the first TES, to obtain an entry corresponding to the IP address of the second TES, and encapsulates the first packet into a network virtualization overlays(NVO3) packet according to the entry; the first NVE forwards the NVO3 packet to the second NVE by layer 3, and the second TES accesses the second NVE.
Owner:HUAWEI TECH CO LTD

A method and device for network route optimization

This invention relates to a method for optimizing network routes including: a, service CSCF judges if iFC trigger condition for expressing if a signed service of a user is activated is satisfied in an initial filtration rule from the user signed data of an attributed user server, b, CSCF determines if it routes said session to an applied server corresponding to the initial filtration rule. This invention also provides a device used in optimizing network routes.
Owner:HUAWEI TECH CO LTD

Banded transportation junction formed by paralleling parallel elevated road stations and elevated railway stations

The invention relates to a banded transportation junction formed by paralleling parallel elevated road stations and elevated railway stations, belonging to the technical field of railway station construction and aiming at solving the problem of inconvenience brought about for people by the conditions that the stations of various transport means of a large-scale integrated transportation junction are excessively concentrated, a scale is excessively huge, and transport is separated from commerce. The parallel elevated road stations are arranged parallel to one or more than one elevated railway station at short distances to form the banded transport hub; stop stations of island platforms of the parallel elevated road stations correspond to entrances / exits of the elevated railway stations, and passengers can take buses which are convenient for positive-direction and reverse-direction transfer on parallel elevated roads to reach and leave the entrances / exits of elevated railway stations on which the passengers need to take; and when the parallel elevated road stations are parallel to the elevated railway stations in an overlapping way, the parallel elevated road stations are positioned below the elevated railway stations.
Owner:田耕

Multi-hop transitroute design method based on terminal direct communication

The invention discloses a multi-hop transitroute design method based on terminal direct communication. Direct communication among terminals is permitted, the burden of a cellular system is relieved, and the capacity of a communication system is expanded. A D2D communication system improves the resource utilization rate of a communication network and system reliability by leading in the relaying technology. In order to meet the scene where the same data need to be sent to multiple terminals within a large range in a low-delay mode, a route is selected in this way, and a transmission route of the data is built. A solution scheme is provided in order to overcome the cavitation phenomenon that a goal terminal can not be reached.
Owner:NANJING UNIV OF POSTS & TELECOMM

Intelligent water affair Internet of Things online monitoring platform and method

The invention relates to the technical field of water affair monitoring, and particularly relates to an intelligent water affair Internet of Things online monitoring platform and method. The method isapplied to the platform. The platform comprises a field data acquisition device, data transmission equipment, a server, an operation and maintenance terminal and remote monitoring equipment, whereinthe server comprises the following modules: a data receiving module, a data processing module, a data display module and an operation and maintenance alarm module, and the operation and maintenance alarm module is used for sending a fault node and a geographic position corresponding to the fault node to the operation and maintenance terminal to inform the operation and maintenance personnel of maintenance when the data processing module pre-judges that there is a faults. According to the invention, the problem that the existing water affair system cannot timely and quickly master and track theworking dynamic of each water affair operation and maintenance work and cannot quickly respond to emergencies is solved.
Owner:莱格特智电物联科技(重庆)有限公司

Location aided routing method applied to wireless Mesh network

The invention discloses a location aided routing method applied to a wireless Mesh network. The method comprises the following steps that: distributed nodes in the wireless Mesh network acquire the location information of the nodes, and transmit the location information to other nodes in the network in a broadcast form; each node in the network maintains a mapping table L-Mac of Mac addresses and the location information in the form of a Hash link table; a source node calculates a circular search domain according to the location information in the L-Mac as well as the moving speed and moving direction of the source node before initiation of routing; when a routing request frame is received, an intermediate node judges whether or not the intermediate node is in the request domain, if so, forwards the routing request frame, otherwise, discards the routing request frame; after receiving the request frame, a destination node transmits a routing response frame to the source node by selecting a path with a small moving speed domain accumulated value; and after receiving the response frame, the source node starts transmitting data packets. Through adoption of the location aided routing method, the location information is utilized fully. Compared with a conventional routing method, the method has the advantages of smaller time delay and lower resource occupation.
Owner:SOUTHEAST UNIV

Navigation method and navigation system for continuous intersections, navigation server and mobile terminal

The invention provides a navigation prompting method for continuous intersections. The navigation prompting method for the continuous intersections includes that a geographic information system (GIS) navigation server obtains current position information and road condition information of a mobile terminal, the GIS navigation server judges whether the continuous intersections which are required to be prompted appear at the front of the mobile terminal according to the current position information and the road condition information, wherein the continuous intersections comprise a plurality of intersections. If the GIS navigation server judges that the continuous intersections which are required to be prompted appear at the front of the mobile terminal, the GIS navigation server transmits navigation prompting information of the plurality of the intersections to the mobile terminal and the mobile terminal carries out the navigation prompting for users according to the navigation prompting information of the plurality of the intersections. The navigation prompting method for the continuous intersections improves accuracy of navigation and reduces economic loss and time waste. The invention also provides a navigation prompting system for the continuous intersections, the GIS navigation server and the mobile terminal.
Owner:BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD

System and method for automatic reservation and scheduling of college faculty member transportation vehicles

The present invention provides a system and method for automatic reservation and scheduling of college faculty member transportation vehicles. A staff usage terminal and a vehicle intelligent terminal are connected with a server through a wireless network, and a database is configured in the server; the staff usage terminal is held by users' hands, and the staff usage terminal comprises an information transmission module and an identity verification module; vehicle intelligent terminal is installed on a vehicle and comprises a GPS location module, an operation speed obtaining module and a passenger identity authentication module; the server comprises an information storage module, an information transmit-receive module and a scheduling module; and the server obtains and receives the corresponding information and requirements of the staff usage terminal and the vehicle intelligent terminal to perform reasonable scheduling of the staff and the vehicles and send the scheduling results and other corresponding information to the staff usage terminal and the vehicle intelligent terminal. The system and method for automatic reservation and scheduling of college faculty member transportation vehicles realize that the faculty members can wait for vehicles at many vehicle waiting stations so as to reduce the no-load condition of vehicles and the detouring phenomenon, reduce the waiting time, improve the system operation stability, reduce the investment of human cost and facilitate system maintenance.
Owner:NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY

PGW (Packet Data Network Gateway) switching control method, system, and server

This invention discloses a PGW switching control method. The method comprises the following steps: a terminal sends current position information to a source PGW; the source PGW detects user data delay information and reports judging information to a server, wherein the judging information includes the current position information, the user data delay information, source PGW information, MME (Mobility Management Entity) information and an APN (Access Point Name); the server compares the received judging information with historical information stored in a database, and judges whether PGW switching needs to be performed or not according to a comparison result; if so, a PGW switching instruction is sent to the MME; the MME sends a detaching request to the terminal; and, the terminal initiates an attachment according to the detaching request, and selects a current optimal PGW as a destination PGW. The method can control the terminal to switch the PGW at an optimal moment, reduces route detouring, and improves user experience. The invention further discloses a PGW switching control system and server.
Owner:惠州市智慧大数据有限公司

Conveying pipeline, boom system and operating equipment

The invention discloses a boom system which comprises a boom and a conveying pipeline. The boom comprises a first arm, a middle arm and a tail arm which are hinged sequentially, the conveying pipeline comprises a first pipeline body, a middle pipeline body and a tail pipeline body which are fixedly arranged on the first arm, the middle arm and the tail arm respectively and are connected sequentially, the middle pipeline body comprises a first pipeline, a second pipeline and a pipeline switching device, an inlet of the first pipeline is communicated with the first pipeline body, an outlet of the second pipeline is communicated with the tail pipeline body, and the pipeline switching device is used for disconnecting or connecting the first pipeline with the second pipeline. The boom system is provided with two discharging ports used for long-distance distribution and short-distance distribution respectively, and harm caused by 'bypassing' of concrete in the conveying pipeline during short-distance distribution can be avoided. Additionally, the invention further discloses the conveying pipeline and operating equipment provided with the boom system.
Owner:SANY AUTOMOBILE MFG CO LTD

Semi-permanent address based message sending method

The invention discloses a semi-permanent address based message sending method. According to the semi-permanent address based message sending method, an RCode (Residence Code) of target equipment of an account is obtained firstly, then messages are sent to the target equipment directly, and message detour is reduced. The invention also discloses a residence identification method which is used for obtaining the RCode of the target equipment of the account. The invention also discloses a SPAddr (Service Provider Address) based message sending method which is used for directly sending messages to the target equipment of the account. The invention also discloses a SPEmailAddr (Service Provider Email Address) based message sending method. The invention also discloses a residence identification method which is used for directly obtaining a new RCode of the SPEmailAddr. The invention also discloses an HSvr (Home Server) which can eliminate bottleneck factors and reduce message detour. The invention also discloses a message processing method which is used for processing messages from other HSvrs. The invention also discloses a residence identification message processing method. The invention also discloses a RIDSvr (Residence Identification Server) which can achieve load sharing.
Owner:王正伟

Method and system for avoiding bypass of carrying media

The invention provides a method of avoiding the circularity of a loading media. A communication transmitting end transmits IP domain negotiation request carrying an IP domain message at the transmitting end to a communication receiving end; the communication receiving end transmits the IP domain negotiation request response to the communication transmitting end; if the IP domain negotiation request response which indicates that the IP domain of the communication transmitting end is identical to the IP domain of the communication receiving end, the communication transmitting end negotiates with the communication receiving end to obtain a media connection IP address and / or port information of an opposite terminal. Finally the communication transmitting end can be directly communicated with the communication receiving end through a router; thereby the unnecessary circularity of the loading media is avoided.
Owner:HUAWEI TECH CO LTD

Intelligent storage method and intelligent storage device

The invention provides an intelligent storage method and an intelligent storage device. The intelligent storage method comprises the steps that current storage information from a storage terminal is obtained and is sent to any user terminal; storage request information of each user terminal is obtained; the to-be-opened storage box cell corresponding to the storage terminal is determined according to the current storage information and the storage request information, and a corresponding opening signal is sent to the storage terminal; after a signal about storage box cell closing is obtained, geographical location information of the storage terminal corresponding to the storage box cell is sent to the user terminal corresponding to the storage request information. By adopting the technical scheme, on one hand, appropriate storage box cells are allocated for users, the utilization rate of the storage box cells is improved; on the other hand, the geographical location information of the storage terminals corresponding to the storage box cells are sent to the user terminals, the article taking convenience of the users is improved, self-service storage and taking are achieved, the intelligent storage method is convenient and quick, and user experience is improved.
Owner:SHENZHEN SPRINGWOODS HLDG CO LTD

Worldwide interoperability for microwave access (Wimax) system capable of realizing non-fixed anchor point switch and switch method thereof

The invention provides a worldwide interoperability for microwave access (Wimax) system capable of realizing non-fixed anchor point switch and a switch method thereof. After a terminal finishes a Wimax access service network anchored switch, a source access gateway (AGW) transmits an AGW switch request to the target AGW; the target AGW allocates a new resource identifier (RID) for the terminal, and stores the mapping information of the terminal access identifier (AID) and the new resource identifier (RID); the target AGW initiates an RID registration process and updates the RID of the terminal which is stored by a home identity location register (ILR) of the terminal; the target AGW transmits an AGW switch response to the source AGW, and the source AGW releases resources allocated to the terminal after the switch is finished. Messages between the terminal and the opposite ends of the terminal are forwarded via the target AGW. According to the invention, based on a Wimax system, a non-fixed anchor point switch is realized and an alternative route is avoided.
Owner:ZTE CORP

On-sea construction ship worker positioning management system and method

The invention relates to an on-sea construction ship worker positioning management system comprising a ship monitoring system, a worker monitoring system and a ground command system, wherein the worker monitoring system comprises a card reader and an industrial control computer that are installed on a ship, the card reader is used for reading information of labels worn by workers and sending the information read by the card reader to the industrial control computer, the industrial control computer is used for sending information read by the card reader to the ground command system, and the ship monitoring system is used for sending ship positioning data and basic ship information to the ground command system; the ground command system is used for receiving the information read by the card reader, the ship positioning data and the basic ship information so as to form on-sea construction ship worker positioning information. Via the on-sea construction ship worker positioning management system and method, convenience of management can be realized, positions and conditions of construction ships and workers can be grasped in real time, construction safety can be ensured, ship machine and worker safety can be ensured via capability of mobilizing resources at any time, and efficiency can be raised.
Owner:HUADIAN HEAVY IND CO LTD

4G and 5G network interoperation method and device, system and equipment

The invention relates to a 4G and 5G network interoperation method and device, a system, equipment and a storage medium. The 4G and 5G network interoperation method is applied to the situation that user equipment (UE) moves from a 4G network to a 5G network, and comprises the following steps: an authentication management function (AMF) obtains first information of the UE from a mobility managemententity (MME), and the first information carries a serving gateway (SGW) address; according to the SGW address, an interface address between the AMF and second network equipment is obtained from the first network equipment, and the second network equipment comprises a session management function SMF and an SGW which are arranged in a combined mode; and connecting with the SMF of the second networkequipment according to the interface address between the AMF and the second network equipment.
Owner:CHINA TELECOM CORP LTD

Bus-similar carpooling method

The invention relates to a bus-similar carpooling method. The car owner route of high matching degree is pushed to passengers with the car owner acting as the center, and then the passengers select totake the car or not so that the detouring and communication cost of the car owner can be reduced, the inconvenience caused by picking up the passengers of the same route can be reduced for the car owner as much as possible, the passengers make compromises for their own get-on points and get-off points according to the driving route of the car owner, and the carpooling cost can also be saved for the passengers. The carpooling cost can be effectively reduced by reducing the cost of providing the carpooling service of the car owner so that more passengers can be absorbed to join carpooling and green traveling can be realized. The car owner can set the get-on allowing route and the get-off allowing road section along the way in advance for matching of the passengers, and two carpooling modesof reservation and real-time invitation can be selected.
Owner:厦门信息港建设发展股份有限公司

Method, device and system for identifying service priority

The invention discloses a method, a device and a system for identifying service priority. The method includes the steps: 1) routing a conversational service initiated in a circuit switch domain by a user at a mobile switching center to a user data storage device; 2) inquiring service priority identifier bit information of the conversational service according to registration status information of the user in the circuit switch domain and an IP (internet protocol) multimedia subsystem domain by the user data storage device; and 3) processing the conversational service according to the service priority identifier bit information by the mobile switching center. Service priority identifier bits are set in an integrated HSS / HLR (home subscriber server / home subscriber server), services capable of being completely finished in a CS (customer service) domain can be finished only in the CS domain when the user sign a contract of the services, roundabout of signaling and media is decreased, network resources are saved, and service processing efficiency is improved.
Owner:CHINA MOBILE COMM GRP CO LTD

Method and system for realizing intelligent roaming services

InactiveCN102892101ASolve the problem of high international roaming chargesReduce detoursTransmissionNetwork data managementRoamingProcessor register
The embodiment of the invention discloses a method for realizing intelligent roaming services. The method comprises the following steps that: when a user terminal with one card and multiple numbers is started up in the first country and selects first numbers, a home location register (HLR) in the first country sends phone activation (HAT) information to a service control point (SCP); and, when the user terminal with one card and multiple numbers roams to other countries and a common user terminal in the first country calls the user terminal with one card and multiple numbers through the first numbers in the first country, the SCP converts the first number into numbers corresponding to the country to which the user terminal with one card and multiple numbers roams according to the phone activation (HAT) information. The invention further provides a system for realizing intelligent roaming services. According to the technical scheme disclosed by the invention, the higher international roaming problem of the user terminal with one card and multiple numbers is solved.
Owner:ZTE CORP

Single-line full mutual passage one layer overpass

The invention relates a fly-over bridge. It is utilized the original one load surface of the cross road as longitudinal vehicle straight-going lane, and added an arc high crossover to use as transversal straight-going passageway. Another two sets of U type ramp is formed arc high crossover to realize left and right turning. Both of them are set at its inner side to realize left turning. The inner side arc small crossover can realize right turning, and longitudinal walker cross. The transversal can be realized by pedestrian overpass. Thus the single layer road way realizes many functions, such as all sides vehicle not cross each other, machine non separation, and so on. It can solve traffic jam, increase driving speed and reduce energy consumption.
Owner:徐志力 +1

Medical assistance system and medical service method based on mobile positioning

The invention discloses a medical assistance system based on a network. The system comprises a medical server platform and a mobile terminal. The medical server platform is equipped with a patient module, a medical staff module, a communication module, an online inquiry module, a surrounding assistance module and a positioning system. A patient and a medical staff log in the medical server platform through an APP or a third party link application. The patient can check positions of surrounding medical groups which are in a service state through the mobile terminal and provides own shared position. According to the scheme, a user can seek the medical staff nearest to the user efficiently outside the hospital and the user can ask for help at a critical moment and fights for the gold rescue time. For slight illness and chronic illness, the user can consult with a doctor nearest to the user, and the diagnosis, direction, inquiry and help can be carried out through look, listen, question and feel of the doctor. Through remote positioning, a remote demander is helped to seek the surrounding medical staff for help.
Owner:林康

WiMAX (Worldwide Interoperability for Microwave Access) system for switching without fixed anchors and switching method thereof

The invention relates to a WiMAX (Worldwide Interoperability for Microwave Access) system for switching without fixed anchors and a switching method thereof. In the system, an ILCR (Identity Location Control Router) is used for distributing a new location identification for a terminal when the terminal is switched in, releasing resources distributed for the terminal after the terminal is switched out and forwarding data messages for switching the terminal in and out; an AGW (W-ASN Gateway) is used for realizing W-ASN (Wimax Access Service Network)-anchored switching of the terminal, selecting a target ILCR for the switched-in terminal, building a tunnel between the switched-in terminal and the target ILCR and forwarding data messages of the terminal through the tunnel; the ILCR or the AGW is also used for registering the new location identification of the terminal to an ILR (Identity Location Register) of the terminal; and the ILR is used for registering and updating the location identification of the terminal and transmitting a location identification updating notification to all gateways accessed from correspondent nodes of the terminal after receiving a triggering message for updating the correspondent nodes. Through the method and system disclosed by the invention, the switching without fixed anchors can be realized, path circuity of data packages is reduced and transmission delay and bandwidth wastes are decreased.
Owner:ZTE CORP

Method and device for sending response message, computing equipment and storage medium

The invention provides a method and device for sending a response message, computing equipment and a storage medium, and belongs to the technical field of network communication. The method comprises the steps that a network device receives a response message sent by a DHCP service device, wherein a destination address of the response message is a first IP address of a relay device, and the relay device establishes a communication connection with a client; the network device determines a first next hop address in a plurality of next hop addresses corresponding to the destination IP address of the response message, wherein the first next hop address is a first tunnel endpoint IP address of the relay device and being different from tunnel endpoint IP addresses of other relay devices of a target anycast group to which the relay device belongs, and each relay device in the target anycast group establishes a communication connection with the client; and the network equipment can forward the response message to the relay equipment according to the first next hop address. By adopting the method and the device, the detour condition of the response message can be reduced.
Owner:HUAWEI TECH CO LTD

Express collection point recommendation method, device and system, equipment and storage medium

The invention discloses an express collection point recommendation method, device and system, equipment and a storage medium, and the method comprises the steps: receiving an express collection pointrecommendation request initiated by a client, obtaining a first express waybill number to be sent by the client at present, and screening a second express waybill number which can be signed by a collection point from the first express waybill number; acquiring first interest surface information of a receiving address corresponding to the second express waybill number, and aggregating the first interest surface information to obtain a plurality of pieces of second interest surface information; obtaining address information of each preset collection point and electronic fence information corresponding to the client; screening out a target collection point in an area corresponding to the electronic fence information according to the address information of each collection point; and returningthe second express waybill number, the second interest plane information, the electronic fence information and the address information of the target collection point as express collection point recommendation information to the client for visual display. According to the invention, the collection point information is transparent, the back-and-forth detour of salesmen is reduced, and the express signing timeliness is improved.
Owner:SHANGHAI DONGPU INFORMATION TECH CO LTD
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