摘要:
A location based service method and location based service system is provided. The location based service method includes: making requests for position determination of a client terminal according to a first position determination method and a second position determination method, in response to a location based service request; receiving a position determination result according to the first position determination method, and generating first location data including additional information which corresponds to the position determination result according to the first position determination method; providing the client terminal with the first location data; receiving a position determination result according to the second position determination method, and generating second location data, the second location data being refined first location data; and providing the client terminal with the second location data.
摘要:
A mobile communication terminal capable of position determination, including: a base station information recorder recording detailed base station information corresponding to at least one base station; a base station signal receiver receiving base station signal information from a reference base station at a predetermined interval; a base station information reader reading the detailed base station information with respect to a base station corresponding to the received base station signal information, from the base station information recorder; and a position determiner determining a position of the mobile communication terminal by using the received base station signal information and the read detailed base station information.
摘要:
A method and an apparatus for estimating a location of a terminal are provided. The method includes: receiving at least one base station signal from each of at least one base station; computing received signal information with respect to the received signal; and estimating the location of the terminal based on signal transmission direction information associated with the base station and the computed received signal information. The present invention can accurately estimate the location of the terminal based on directional information of base station signals.
摘要:
A method and system for determining a location of a mobile communication device for an improvement of a positioning through a self-learning processing algorithm. In the method and system for determining a location of a mobile communication device, a self-learning processing unit batch processes GPS-based positioning results accumulated in a first self-learning database, and generates a sector direction value. Also, the self-learning processing unit generates optimized environment parameters, which is necessary for wireless network-based positioning, and basic data for a pattern matching, and updates the optimized environment parameters and basic data in a second self-learning database. Accordingly, the system for determining a location of a mobile communication device performs a positioning through a pattern matching method by using results accumulated in the second self-learning database.
摘要:
A method of determining a location of a mobile communication terminal, the method including: receiving base station identification signals from a plurality of base stations; calculating distance ratios between the plurality of base stations and the mobile communication terminal, from the received base station identification signals; generating first variables and second variables from the distance ratios; and determining the location of the mobile communication terminal from the first variables and the second variables is provided.
摘要:
There is provided a method for supporting a multicast service in an Ethernet passive optical network system. Since an Optical Network Unit (ONU) system monitors an IGMP (Internet Group Management Protocol) message and informs the monitored result of an Optical Line Terminal (OLT) system so that the OLT system creates L2 multicast forwarding table using a multicast address and ONU ID information in a PON port, the ONU system transmits the multicast packet only to a corresponding subscriber on the basis of the L2 multicast forwarding table when receiving a multicast packet. Therefore, it is possible to transfer a multicast packet only to a specific ONU system belonging to a corresponding multicast address group among a plurality of ONU systems.
摘要:
A method for providing a QoS-guaranteeing multi-path and a method for providing disjoint paths using the same are provided. The method configures the shortest path tree by adapting the start node “s” and the destination node “d”. When a new node is selected as a tree node in a tree configuration process according to the “s” or the “d”, the closest node to either the “s” or the “d” is selected. If a specified node “v” is contained in both a tree oriented from the “s” and another tree oriented from the “d”, one path of “s”-“v”-“d” is created. If all nodes are contained in either the tree of “s” or the other tree of “d”, then a program of path creation process is terminated. Further, the method further includes a step for determining two disjoint paths from the “s” to the “d” among the found multiple paths above.
摘要:
The present invention provides an advertising sheet using a micro-prism retroreflective sheet with a highly retroreflective property and a method for manufacturing the same. The advertising sheet (400) includes the retroreflective sheet (410) which has a micro-prism reflective surface on a lower surface thereof, and a reinforced fabric (420) which is attached to the lower surface of the retroreflective sheet. The advertising sheet (400) further includes a chemical layer (430) which is applied to an upper surface of the retroreflective sheet (410), and a printing layer (440) which is provided on the chemical layer (430). The advertising sheet (400) further includes a transparent coating film (450) covering an outer surface of the printing layer (440).
摘要:
Provided are a dry adhesive fastening system which has a relatively superior adhesion, does not almost generate noises during the attaching or detaching operation, has a simplified structure adapted to mass production requirements, and a method of using the same. For this, the dry adhesive fastening system includes a first adhesion member having a first microvillus disposed on a first board and a second adhesion member having a second microvillus disposed on a second board to contact the first adhesion, thereby providing adhesion. Also, unlike the existing velcro fastening system, the hook and loop may not be classified to improve production yield and effectiveness. Also, during the attachment/detachment, the noises may do not occur. In addition, since the microvillus having the micro or nano size is used, the adhesion may be realized even though a very small area is provided. Therefore, the dry adhesive fastening system according to the embodiment of the present invention may be applied in fields greater than those of the existing velcro fastening system.