Patent application number | Description | Published |
20080233943 | Network management apparatus and method of selecting base station for software update - A network management apparatus inputs a plurality of work dates and time periods to update software in a base station. The apparatus obtains an n-week average of the numbers of connection calls during each of the input time periods for each day of the week, based on statistical information about connection with a wireless terminal in each base station. The apparatus obtains an m-month average of the numbers of connection calls during each of the input time periods for each date, based on the statistical information. The apparatus calculates, for each of the time periods for a work date, an average or a weighted average of the n-week average and the m-month average to obtain a degree of impact upon a communication service. A processing section selects a work date and a time period having the minimum degree of impact and updates the software. | 09-25-2008 |
20090042554 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION NETWORK AND SOFTWARE UPGRADING METHOD - A base station control portion | 02-12-2009 |
20090111450 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION NETWORK AND SOFTWARE UPGRADING METHOD - A base station control portion | 04-30-2009 |
20090111451 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION NETWORK AND SOFTWARE UPGRADING METHOD - A base station control portion selects one or multiple signals in accordance with the state of radio waves from signals received through multiple communication paths. A wireless communication apparatus communicates with a wireless terminal and a wired communication network at multiple frequencies. In response to a request for software upgrading from a network management device, the wireless communication apparatus selects one frequency, controls the state of transmission waves of a wireless interface such that a communication path in which a communication service is being provided can be switched to another communication network without interruption, rewrites software for each wireless interface to software received through a wired interface in advance, and returns the state of transmission waves of the wireless interface. Thus, the software can be upgraded without blackouts of the communication service to the wireless terminal. | 04-30-2009 |
20100248705 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION NETWORK AND SOFTWARE UPGRADING METHOD - A base station control portion | 09-30-2010 |
20110070875 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION NETWORK AND SOFTWARE UPGRADING METHOD - A base station control portion selects one or multiple signals in accordance with the state of radio waves from signals received through multiple communication paths. A wireless communication apparatus communicates with a wireless terminal and a wired communication network at multiple frequencies. In response to a request for software upgrading from a network management device, the wireless communication apparatus selects one frequency, controls the state of transmission waves of a wireless interface such that a communication path in which a communication service is being provided can be switched to another communication network without interruption, rewrites software for each wireless interface to software received through a wired interface in advance, and returns the state of transmission waves of the wireless interface. Thus, the software can be upgraded without blackouts of the communication service to the wireless terminal. | 03-24-2011 |
20110171947 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION NETWORK AND SOFTWARE UPGRADING METHOD - A base station control portion | 07-14-2011 |
Patent application number | Description | Published |
20100020690 | Communication System, Optical Line Terminal, and Congestion Control Method - Congestion caused by a large number of IGMP requests sent from set top boxes at channel switching is prevented in an optical line terminal (OLT). An IGMP processing section in the OLT has a delayed data generation threshold and a delayed data transmission threshold. When the number of ONTS participating in a multicast group is increased, the OLT generates a delayed multicast group for video data. The delayed multicast group having a few second delay accommodates a new user. With this, the end time of a highly popular program and a commercial start time are shifted among users to prevent, in the OLT, congestion caused by IGMP requests sent for channel switching at an identical time point. | 01-28-2010 |
20100202612 | OPTICAL NETWORK SYSTEM AND METHOD OF CHANGING ENCRYPTION KEYS - An optical network system including an OLT and ONUs is provided that can prevent the loss of a multicast signal. When receiving an encryption key generation request from the OLT, the ONU generates an encryption key, and transmits the generated encryption key to the OLT. When receiving a notice of timing from the OLT, the ONU updates the encryption key of a belonging group. When receiving a report message from a STB through the ONU, the OLT analyzes the report message, stores a group that the STB belongs to as well as the ONU in a second table, and transmits the encryption key generation request to the ONU. When receiving the encryption key from the ONU, the OLT further stores the encryption key in the second table, and transmits to the ONU a notice of the timing in which the encryption key is valid. | 08-12-2010 |