Patent application number | Description | Published |
20090122763 | COMMUNICATION CONTROL DEVICE AND METHOD - Included are a communication control device applied to a wireless communication system | 05-14-2009 |
20090190555 | Handover Method in Wireless Communication System, Mobile Station, and Wireless Communication System - A handover method, in a wireless communication system having a mobile station and a plurality of base stations, for performing handover of the mobile station from a connected base station to a neighbor base station, the method having the steps of: deciding that neighbor base station information non-reception handover is establish; searching a connectable neighbor base station; acquiring identification information for the neighbor base station; transmitting a handover request including the acquired identification information; transmitting, in the connected base station received the handover request, to the mobile station, service level information included with in a handover response, and deciding a handover destination based on the service level information. | 07-30-2009 |
20090209254 | Radio Communication System, Radio Base Station, And Base Station Switching Method - A radio communication system, including; a first and second base station; and at least one terminal, wherein the first base station including: an advertisement message generation unit which generates an advertisement message including channel information of the second base station; a handover request message generation unit which generates a handover request message including a handover instruction to the second base station; and a transmission unit which transmits the advertisement message and the handover request message to the terminal, and the terminal including: a receive unit which receives the advertisement message and the handover request message; and a terminal side handover processing unit which detects whether a handover to the second base station instructed by the handover request message is possible, and performs handover to the second base station, using the channel information of the second base station included in the advertisement message, if the handover can be possible. | 08-20-2009 |
20090264129 | Radio Communication Method and Terminal Device - A radio communication method for performing radio communication between a base station and a terminal, including the steps of: comparing field strength of the base station which transmitted a reconnection instruction and filed strength of an adjacent base station which locates adjacent to the base station, when the terminal in a power saving standby mode receives the reconnection instruction from the base station, and controlling whether the terminal reconnects or not to the base station which transmitted the reconnection instruction, according to the result of the comparison. | 10-22-2009 |
20100002665 | BASE STATION, MOBILE STATION, AND METHOD FOR WIDEBAND WIRELESS ACCESS SYSTEM - A base station includes a deciding part configured to decide a period of performing data transmission/reception and a period of not performing data transmission/reception when performing intermittent communications, a generating part configured to generate a predetermined signal to a mobile station, and an adjusting part configured to adjust the period of performing data transmission/reception and/or the period of not performing data transmission/reception according to a response signal transmitted from the mobile station in response to the predetermined signal. | 01-07-2010 |
20100248615 | Communication Control Method And Radio Base Station And Radio Terminal - A communication control method, for a radio communication system including a radio base station, a radio terminal, and a relay station that receives a radio signal transmitted from the radio base station and relays the radio signal to the radio terminal at a transmission frequency different from a reception frequency, includes broadcasting information on one or more transmission frequencies of radio base stations or relay stations from the radio base station; and determining, by the radio terminal, whether transmission-source identification information included in the radio signals that are received before and after switching the reception frequency match, the switching being conducted based on the information broadcasted from one of the radio base station directly and via the relay station, wherein if the radio terminal determines that the transmission-source identification information matches, the radio terminal omits a terminal registering procedure after frame-synchronization with the radio communication system. | 09-30-2010 |
20100323691 | Wireless Communication System For Switching To A Preferred Carrier - A wireless communication system, including: a first wireless base station disposed on a first wireless network; a second wireless base station disposed on a second network; and a mobile station that includes a communication controller, which controls wireless communication; wherein in the case where the mobile station attempts to switch communication to the second wireless network while coupled to the first wireless base station and communicating on the first wireless network, the communication controller temporarily synchronizes with the second wireless base station, and obtains an address pointer for acquiring network configuration information from the second wireless base station, the network configuration information containing information regarding the network configuration of the second wireless network, and after obtaining the address pointer, the communication controller recouples with the first wireless base station, accesses the data acquisition location specified by the address pointer via the first wireless network, and acquires the network configuration information. | 12-23-2010 |
20110059723 | Mobile Terminal - A mobile terminal used in a wireless communication system includes a first base station group for which base station information is advertised to the mobile terminal, a second base station group for which the base station information is not advertised to the mobile terminal, the mobile terminal being able to access each base station in the first base station group and a specified base station in the second base station group. The mobile terminal includes a unit to receive location information, and a unit to execute base station detection processing regarding the first base station group and the second base station group when the location information is associated with the specified base station, and to execute the base station detection processing regarding the first base station group while restricting the base station detection processing regarding the second base station group when the location information is not associated with the specified base station. | 03-10-2011 |
20110064048 | Wireless Terminal, Wireless Base Station and Communication Method in Wireless Communication System - In a wireless communication system, time point information is transmitted from a second wireless base station. The time point information indicates a time point at which service information is transmitted from the second wireless base station. Moreover, at the time point indicated by the time point information, the service information is transmitted from the second wireless base station. On the wireless terminal side, firstly, the time point information is obtained in a first non-communication period in which communication with the first wireless base station is temporarily stopped. Then, the service information is obtained in a second non-communication period which is ensured in accordance with the time point indicated by the time point information. | 03-17-2011 |
20110243003 | METHOD, APPARATUS, AND SYSTEM FOR WIRELESS CONNECTION - A wireless connecting method includes a connection monitoring step, a connection parameter retaining step, and a connection restoring step. The connection monitoring step monitors the wireless connection between the communication terminal device and the base station. The connection parameter retaining step sets a communication session retention time period that is longer than a connection parameter retention time period, and retains a connection parameter. A connection parameter when the wireless connection is disconnected is retained in at least one of the communication terminal device and the base station for the communication session retention time period exceeding the connection parameter retention time period. The connection restoring step executes, after the connection parameter retention time period has elapsed, when the communication session retention time period has not elapsed, an initial connecting process and restores the connection using the connection parameter stored when the wireless connection is disconnected. | 10-06-2011 |
20120076114 | WIRELESS COMMUNICATION APPARATUS, WIRELESS BASE STATION, AND ABNORMALITY RESTORATION METHOD - A wireless communication apparatus attachable to an information processing apparatus. The wireless communication apparatus includes a wireless communication interface configured to perform wireless communication. The wireless communication apparatus also includes a processor configured to input, on detecting an error in the wireless communication interface, a signal for recognizing a temporary interruption to the information processing apparatus, and to initialize the wireless communication interface. | 03-29-2012 |
20120213069 | TRANSMISSION CONTROL METHOD, TRANSMISSION CONTROL SYSTEM, COMMUNICATION DEVICE AND RECORDING MEDIUM OF TRANSMISSION CONTROL PROGRAM - A transmission control method includes performing communication between a transmission source communication device and a transmission destination communication device by using a transmission control protocol which includes a plurality of congestion control functions corresponding to a plurality of congestion control methods, respectively, and causing, when the transmission source communication device and the transmission destination communication device switch from a first congestion control function to a second congestion control function, at least one of a plurality of parameters for controlling operating states in the first congestion control function to be inherited by a parameter for controlling an operating state in the second congestion control function. | 08-23-2012 |
20120246282 | COMMUNICATION SETTING METHOD, SERVER, RELAY DEVICE, COMMUNICATION SYSTEM, AND INFORMATION PROCESSING DEVICE - A communication setting method includes receiving, at a server in a network to be connected to another network by a plurality of connected devices, a setting request from a terminal to the server, selecting, at the server, one of the plurality of connected devices based on terminal location information regarding the location of the terminal relating to the received setting request, transmitting a setting response including identification information for identifying the selected connected device form the server to the terminal, setting, at the terminal, the connected device of this terminal based on the identification information included in the setting response. | 09-27-2012 |
20130010728 | WIRELESS TERMINAL APPARATUS, COMMUNICATION APPARATUS, AND WIRELESS COMMUNICATION SYSTEM - A wireless terminal apparatus is capable of switching between a first mode in which connection to a wireless access network is established and a second mode in which the connection to the wireless access network is temporarily released. The wireless terminal apparatus has a data processing unit and a transmitting unit. The data processing unit generates data to be transmitted to the wireless access network. The transmitting unit includes at least a part of the data generated by the data processing unit during the second mode in a control message to be transmitted to the wireless access network in the second mode, and transmits the data. | 01-10-2013 |
20130163455 | COMMUNICATION DEVICE AND COMMUNICATION METHOD - A communication device including: a processor configured to perform a wireless communication protocol including an upper layer and a lower layer, wherein the processor is configured to estimate, based on a round trip time measured at the upper layer in case of carrying out a retransmission control at the lower layer and a time taking for retransmissions at the lower layer, a first estimated round trip time, to estimate, based on the number of times of packet loss at the upper layer in case of carrying out the retransmission control at the lower layer, and the number of times of successful transmission at the upper layer being recovered by the retransmission control, a first estimated packet loss rate, and to obtain, based on the first estimated round trip time and the first estimated packet loss rate, a first estimated throughput in case of not carrying out the retransmission control. | 06-27-2013 |
20130223254 | COMMUNICATION CONTROL DEVICE, COMMUNICATION CONTROL METHOD, AND COMPUTER-READABLE RECORDING MEDIUM - A communication control device measures a size of burst data transmitted from a first device through the use of a predetermined protocol in a transport layer. The communication control device selects a protocol ruled by an algorithm with the smallest latency, which is estimated from the measured size of burst data and characteristics of a network, from among plural protocols used in the transport layer. The communication control device terminates the communication of the burst data transmitted through the predetermined protocol from the first device and transmits the burst data to a destination through the use of the selected protocol. | 08-29-2013 |
20130235729 | INFORMATION PROCESSING APPARATUS, CONGESTION CONTROL METHOD, AND COMPUTER-READABLE RECORDING MEDIUM - A TCP node stores a congestion window size before congestion is detected, the congestion window size limiting the amount of data to be transmitted. If congestion is detected, the TCP node reduces a current congestion window size to a predetermined size. If path switching subsequently occurs after congestion is detected, the TCP node uses a round-trip time or bandwidth information of a path after switching to correct the congestion window size before congestion detection. The TCP node then changes the reduced congestion window size to the corrected size. | 09-12-2013 |
20140082180 | INFORMATION PROCESSOR APPARATUS, INFORMATION PROCESSING METHOD, AND RECORDING MEDIUM - An information processor apparatus includes a memory which stores a program, and a processor, based on the program, configured to, detect a packet that is transmitted from a management device to a second node that is included in a second network, and that triggers a request packet transmitted from the second node to a first node that is included in a first network, by monitoring communication from the management device that manages the first node and the second node that obtains data from the first node through a third network, and execute a proxy request by transmitting the request packet to the first node when the packet is detected and a connection is made with the first network. | 03-20-2014 |
20140169164 | COMMUNICATION DEVICE, COMMUNICATION METHOD, AND RECORDING MEDIUM - A communication device includes a memory configured to store a program, and a processor, based on the program, configured to control a number of communication segments that are allowed to be continuously transmitted after a first communication segment to be transmitted in accordance with a number of acknowledgments that have been received, and set a communication segment length of the first communication segment based on a length of time before completion of reception of an acknowledgment for a transmitted second communication segment. | 06-19-2014 |