Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Harumine Yoshiba

Shiwen Chen

Takao Yamaguchi

Manabu Nakamura

Hongbing Li

Tomoaki Itoh

Junichi Hamada

Naoyuki Otoshi

Mototsugu Shiraiwa

To explicitly identify network devices without providing a database server using an IPv6 address. An IPv6 address for address management on a network is set in a network device connected to an IPv6 network and the network device keeps and maintains the address. An interface IDof the IPv6 address is composed of a maker ID, a management ID, a device ID, and a function ID. Maker information kept and maintained by a maker of the network device is assigned to the maker IDand a number indicating management by a device type is assigned as a number indicating a management system type to a device the management ID. The device IDhas numbers indicating a device type, a product type, and a product serial number. A number indicating a function of the network device is assigned to the function ID

Network device and network device managing method

A centralized multicast session management system is provided for managing resources in a multicast environment. The session management system includes: at least one multicast application that initiates a request for a multicast session; a session manager is configured to receive the session request from the multicast application and to assign a multicast address for the requested multicast session; and a routing and network manager for managing network resources, where the session manager interacts with the routing and network manager to allocate network resources for the requested multicast session before the multicast address is communicated to the multicast application.

Multicast session management system

When a transport rate Rs is updated, in the case where the updated transport rate Rs is within a variable range (Rc&#x3c;Rs&#x3c;U&#xd7;Rc, and U&#x3e;1) defined by a current encoding rate Rc, FEC (Forward Error Correction) data sending rate Rf is updated (Rf=Rs&#x2212;Rc) without updating the current encoding rate Rc. On the other hand, in the case where an Rc update timer set to three seconds, for example, is timed out, the encoding rate Rc is updated using a minimum value Rs_min of the transport rate up to that time (Rc=V&#xd7;Rs_min, and 0&#x3c;V&#x3c;1). Even when the transport rate Rs greatly varies to be out of the variable range, the encoding rate Rc is updated in the same manner.

Method for transporting media, transmitter and receiver therefor

Improved algorithms are provided for performing path management for a plurality of select data transmission sessions in a multicast network. The algorithms include: constructing a weighted graph which represents topology of the network; assigning load correlated costs to network links; and computing least cost paths for each of the data transmission sessions which accounts for global bandwidth utilization.

Static dense multicast path and bandwidth management

A multicasting network route provisioning system for use in allowing an in-session multicast application to switch its path on need includes a datastore of multicast addresses operable to route multicasting traffic over different network paths. It also includes a datastore of multicasting sessions having flows of various flow patterns, wherein a flow pattern is defined in terms of a set of source and destination network nodes, and corresponds to multiple routing network paths. Further, a session management module is adapted to aggregate multicasting session flows by allocating multicast addresses to multicasting sessions based on correspondence between the network paths and flow patterns of the multicasting sessions, thereby ensuring that flow patterns corresponding to different sets of network paths do not share a same multicast address.

Growing community of inventors

Yokohama, Japan

Harumine Yoshiba