Patent application number | Description | Published |
20080205361 | Wireless communication system and terminal - The present invention provides a wireless communication system and a terminal. A base station includes means that notifies terminals of an intensity of a received interference power. The terminal includes means that controls a transmission power for transmitting data to the base station, which is one of base stations and to which data is to be transmitted, by referencing an intensity of interference power (OSI) notified from base stations to which data is not to be transmitted. The means that controls a transmission power calculates a decision value for increasing/decreasing the transmission power, wherein the decision value is variable according to the current transmission power of the terminal and propagation attenuations between the terminal and the base stations to which data is not to be transmitted, and variably controls the amount of transmission power increase/decrease according to the decision value for increasing/decreasing a transmission power. | 08-28-2008 |
20080242303 | RADIO COMMUNICATION METHOD, RADIO MOBILE DEVICE AND RADIO BASE STATION ACCOMMODATION APPARATUS - In a radio communication system in which sequence numbers of radio packets transmitted to first and second radio base stations are managed independently to perform hand-off, when the hand-off is performed while a plurality of fragmented radio packets are transmitted, a mobile device applies sequence numbers of radio packets managed by the first radio base station after the hand-off is performed and applies sequence numbers of radio packets managed by the second radio base station after completion of transmission of the plurality of radio packets. The radio base station managing radio packets is identified on the basis of the sequence numbers managed in each base station upon restoration and data is restored. | 10-02-2008 |
20090023382 | Radio Communication System and Base Station - A radio communication system includes a grouping unit for grouping a plurality of base stations into a plurality of groups (Soft Handoff Groups) and a determining unit for selecting base stations belonging to one and the same group selected from the groups produced by the grouping unit and for determining the base stations as base stations to send communication packets to an access terminal. | 01-22-2009 |
20090180419 | INFORMATION TRANSMITTING METHOD AND INFORMATION TRANSMITTING SYSTEM - An information transmitting method including; determining, on a basis of a packet error rate from a master station to slave stations, a number of times of multicast transmission in accordance with an expected value of a number of slave stations that transmit a retransmission request, an expected value of a number of retransmitted packets responding to the retransmission request, or a probability that the slave stations receive all packets forming information; notifying determined number of times of multicast transmission to the slave stations; and transmitting, to plural slave stations in multicast, same information formed of plural packets the determined times of multicast transmission. | 07-16-2009 |
20090180420 | INFORMATION TRANSMITTING METHOD AND INFORMATION TRANSMITTING SYSTEM - A slave station which transmits/receives signals to/from a master station, the slave station includes: a transmitting unit and receiving unit for transmitting/receiving signals regarding the master station; a storing unit; an input unit; wherein under a control by a control unit, the transmitting unit transmits a transmission request for transmitting multicast data to the master station in accordance with a timing of power-on or an input by the input unit; the receiving unit receives information of a number of times of transmission for requested multicast data from the master station and stores the number in the storing unit; and after receiving the multicast data the number of times of transmission stored in the storing unit, the control unit determines presence of absence of lacking data which have not been received and, transmits a retransmission request for requesting the lacking data in a case of presence the lacking data. | 07-16-2009 |
20090296631 | SYNCHRONOUS DELIVERY METHOD - An aggregation device performs a synchronous processing so that a synchronous delivery may be made from a plurality of base stations through a broadcasting channel. A BSN ( | 12-03-2009 |
20100081436 | Wireless Communication System, Session Reference Network Controller, and Session Reference Network Control Method - In a conventional system, there is a possibility that human errors are generated in setting registration information because a maintenance engineer manually enters registration information into a session reference network controller which integrally controls access terminals and base stations. To improve the system, session reference network controller a session reference network controller stores the number of access terminals, N, in advance. And, when a “base distance” setting request is received from an access terminal via a base station, the session reference network controller or an OAM (Operation, Administration and Maintenance) server determines a base station, which is one of a plurality of controlled base stations and is Nth nearest from the base station that has transmitted the setting request, and sets the distance between the base station, which has transmitted the setting request, and the base station, which is Nth nearest, as the “base distance”. | 04-01-2010 |
20100202342 | AREA MANAGEMENT SYSTEM - A transmission area is specified flexibly in accordance with the contents of a flow. An area identification number (SHOG) is specified for each interlaced stream of wireless base stations. The same flow is sent at the same timing (or substantially at the same timing) in the interlaced stream specified for the same SHOG. A wireless terminal determines a neighbor sector or a neighbor wireless base station sending the same flow, in accordance with information given from the wireless base stations, and receives and combines the flows. | 08-12-2010 |
20100322107 | WIRELESS COMMUNICATION NETWORK, METHOD OF GENERATING NEIGHBOR LIST IN THE WIRELESS COMMUNICATION NETWORK, AND CONTROL DEVICE THEREFOR - In a wireless communication system, a base station control device has following two steps on the basis of latitude/longitude information obtained from a GPS, that is, a first step of recognizing, from the positional information obtained from the GPS, the fact that base stations in new and old systems are installed at the same location, and a second step of linking a neighbor list of the old system to a neighbor list of the new system with use of the result of the first step. | 12-23-2010 |
20110010592 | INFORMATION TRANSMITTING METHOD AND INFORMATION TRANSMITTING SYSTEM - Information transmitting arrangements for transmitting information through a plurality of base stations from a master station to a plurality of slave stations which communicate with the base stations. | 01-13-2011 |
20110053591 | MOBILE COMMUNICATION SYSTEM, PAGING-AREA DETERMINATION METHOD AND CALL-PROCESSING CONTROL APPARATUS IN MOBILE COMMUNICATION SYSTEM - In order to narrow down base stations within the tracking-area-based paging area to ones within a smaller area where the mobile unit may exist in a mobile communication system performing the paging on the tracking-area basis, the mobile communication system has a location registration information database memorizing tracking area information, a last location registration information and a N-th (N is an integer of one or more) location registration information from the last for each mobile unit, calculates statistical data on a movement distance for each mobile unit based on the location registration information memorized in the location registration information database, and performs the paging via base stations included both within an area whose radius is equal to the calculated statistical data on the movement distance and within the tracking area. | 03-03-2011 |
20110124341 | LOCATION REGISTRATION AREA ASSIGNING METHOD AND WIRELESS COMMUNICATION SYSTEM - A call processing control apparatus automatically detects that a lot of handover and location registration simultaneously occur, and notifies a monitor control server. The monitor control server receiving the notification from the call processing control apparatus transmits a TAI change request to a base station so that a tracking area identity (TAI) of a movement destination cell where congestion occurs and a tracking area identity of a movement origin cell have the same value. The base station receiving the TAI change request message from the monitor control server changes its own TAI value. After that, all mobile devices perform only handover when they move between the cells where the TAI values are changed, and does not perform location registration. | 05-26-2011 |
20110164524 | RADIO ACCESS POINT TESTING APPARATUS - In a case where reception power in a radio access point is high by external noise, the normalcy of the radio access point is tested. In order to judge the normalcy of the radio characteristic of the radio access point, a test is performed through the calling connection between a testing access terminal in the radio access point and a predetermined device. An RSSI is measured before and after the transmission of a test signal. When the RSSI exceeds a threshold value, the path loss of a reverse link connected from the radio access point to the testing access terminal is increased by an attenuator. Then, reception power in the testing access terminal decreases. Thus, initial transmission power in accordance with the reception power from the testing access terminal is raised and the calling connection of the testing access terminal can be performed even under the external noise. | 07-07-2011 |
20110167264 | DECRYPTION-KEY DISTRIBUTION METHOD AND AUTHENTICATION APPARATUS - A decryption key for decrypting data from an access node is distributed to an access terminal intending to receive the data. An authentication unit receives a message for terminal authentication including a terminal identifier from the terminal and authenticates the terminal. The authentication unit refers to a content registration table having stored in advance the content type of a content which the terminal can receive, in association with the terminal identifier, according to the received terminal identifier to obtain a corresponding content type. The authentication unit refers to a decryption data base having stored in advance a decryption key and its valid period in association with a content type, according to the obtained content type to obtain a corresponding decryption key and valid period. The authentication unit sends an authentication result and the decryption key and valid period to the terminal or to a packet control unit. | 07-07-2011 |
20110201330 | WIRELESS COMMUNICATION SYSTEM AND ACQUISITION METHOD FOR MOBILE LOCATION INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A maintenance and administration device of a wireless communication system having for an object to enable the acquisition of accurate location information, even with respect to mobile handsets in the Idle state, sets a mobile handset subscriber identifier and a paging flag to be valid and transmits a visited cell information acquisition request with respect to a call processing control device. In the case where the paging flag is set to be valid, the call processing control device transmits a paging message to the mobile handset, with the mobile handset in the Idle state, and makes it return a reply message. The call processing control device reports, to the maintenance and administration device, the cell having progressively transmitted the paging message reply message as mobile handset visited cell information. | 08-18-2011 |
20120069821 | RADIO COMMUNICATION METHOD, RADIO MOBILE DEVICE AND RADIO BASE STATION ACCOMODATION APPARATUS - A radio communication method in which, when hand-off of the down direction is performed while a radio mobile device subjects one application packet of the up direction to fragmentation to divide the one application packet into a plurality of radio packets and transmits the plurality of radio packets, sequence numbers of radio packets managed by a first radio base station to the plurality of fragmented radio packets of the one application packet even after the hand-off of the down direction is performed and to apply sequence numbers of radio packets managed by a second radio base station to fragmented radio packets of the application packet transmitted subsequently after completion of transmission of the plurality of fragmented radio packets of the one application packet; and making a radio base station accommodation apparatus identify a radio base station and restore data for each radio base station. | 03-22-2012 |
20120287841 | SYNCHRONOUS DELIVERY METHOD - A method for, in a radio communication system having at least a content server, plurality of base stations, and plurality of radio terminals, enabling two or more base stations among the plurality of base stations to broadcast or multicast data delivered from the content server to the radio terminals, the method includes: providing a Broadcast Multicast Service (BCMCS) Serving Node between the content server and two or more base stations; the BCMCS Serving Node includes a period number and sequence number into data delivered from the content server and transmits data including the period number and sequence number to the two or more base stations; in case that a synchronization is deviated or data is lost during data delivery from the base stations to the radio terminals, the base stations perform re-synchronization on a basis of the period number and sequence number included in data received from the BCMCS Serving Node. | 11-15-2012 |
20140029513 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION METHOD, AND MOBILE TERMINAL - A mobile terminal includes: an LTE wireless processing unit having an LTE communication function; a wireless LAN processing unit having a wireless LAN communication function; and a terminal control unit that determines whether to use the LTE wireless processing unit or the wireless LAN processing unit and controls a function as a wireless terminal. The mobile terminal includes a base station functional unit having a communication protocol processing function of an LTE base station. Based on control of the terminal control unit, a signal generated at the base station functional unit, the signal being based on the communication protocol of the LTE base station, is stored in a wireless LAN frame, and the signal is sent to a device in the LTE core network via a wireless LAN base station. | 01-30-2014 |