Patent application number | Description | Published |
20100189034 | WIRELESS COMMUNICATION APPARATUS AND SERVER APPARATUS - Each of wireless communication terminals UA | 07-29-2010 |
20100296442 | COMMUNICATION APPARATUS AND COMMUNICATION CONTROL METHOD - An origination terminal UA | 11-25-2010 |
20100309883 | WIRELESS COMMUNICATION APPARATUS - A wireless communication apparatus is provided with a wireless communication unit ( | 12-09-2010 |
20110007714 | WIRELESS COMMUNICATION APPARATUS - In order to perform handover from a first wireless communication network to a second wireless communication network, a handover control unit obtains a handover preparation time Tb to handover, respective delay times Tddn | 01-13-2011 |
20110019580 | WIRELESS COMMUNICATION APPARATUS - A reproduction speed of an application being executed is controlled with changing an upper limit of accumulation of a jitter buffer based on a radio state during communication by a first wireless communication network. If it is determined to start handover preparation from the first wireless communication network to a second wireless communication network, a preparation time before handover and an absolute delay time of each of the first wireless communication network and the second wireless communication network are obtained from the handover control unit. Based on such information obtained and a data amount in a jitter buffer at a time when it is determined to start the handover preparation, the reproduction speed of the application being executed is controlled to be slowed down. Thereby, it is possible to perform handover to a different wireless communication network without deteriorating reproduction quality and real-time property. | 01-27-2011 |
20110026494 | WIRELESS COMMUNICATION APPARATUS AND COMMUNICATION APPARATUS - In order to perform handover from a first wireless communication network to a second wireless communication network, when it is determined to start preparing for handover from the first wireless communication network to the second wireless communication network, data are transmitted via the first wireless communication network and simultaneously accumulated for a predetermined period. The accumulated data are transmitted via the second wireless communication network after handover. It thus enables to transmit the data in the predetermined period, which are expected to be lost because of handover, while accumulating the data and to transmit accumulated data after handover. Thereby, it is possible to provide a wireless communication apparatus and a communication apparatus capable of performing handover to a different wireless communication network without causing packet loss and thus maintaining stable reproduction quality and real-time property all the time. | 02-03-2011 |
20110044288 | WIRELESS COMMUNICATION APPARATUS - In order to perform handover from a first wireless communication network to a second wireless communication network, a handover control unit obtains a handover preparation time to handover, and by receiving data via the first wireless communication network and the second wireless communication network separately obtains a delay time difference between the networks based on reception times of the same data. Based on such information obtained and an amount of the data in a jitter buffer at a point to determine to start handover preparation, the handover control unit controls a reproduction speed of an application being executed. Thereby, it is possible to perform handover to a different wireless communication network without deteriorating reproduction quality and real-time property and causing packet loss. | 02-24-2011 |
20110044293 | WIRELESS COMMUNICATION APPARATUS AND COMMUNICATION APPARATUS - There is a problem that, if a silent period is generated to a real-time application such as VoIP due to handover using BBM method, a user has a sense of anxiety and misunderstands that communication is completely disconnected. If the silent period is generated to the real-time application such as VoIP due to packet loss at handover, a terminal activates handover alarm (beep sound, for example), indicating that handover is in progress, during the silent period. Thereby, it notifies the user that the silent period is caused by handover and prevents user's misunderstanding that communication is completely disconnected. | 02-24-2011 |
20140030999 | RADIO COMMUNICATION SYSTEM, RADIO BASE STATION, RADIO TERMINAL, AND COMMUNICATION CONTROL METHOD - A radio communication system includes a first radio base station corresponding to a first radio communication scheme and a second radio base station corresponding to a second radio communication scheme. The first radio base station transmits a first switching request notification for requesting switching of a connection to the second radio base station to a radio terminal connected to the first radio base station when emergency information associated with an emergency situation from an upper network has been received. The radio terminal transmits, to the second radio base station, a connection request notification for requesting a connection to the second radio base station when the first switching request notification has been received. | 01-30-2014 |