Nec Corporation

Takahiro Ookuma

Satoru Yamano

There is provided a packet joining method, program, and apparatus with an increased wireless utilization efficiency and a reduced packet delay. The packet joining method includes a step of performing Neighbor Discovery within a range reachable in one hop to detect neighboring audio terminals which are connectable over short-range radio and acquiring call information including audio session information such as whether the detected audio terminals are busy with respective calls and packetization period information and wireless transmission rate information, a step of selecting one as a joining destination from the list of detected connectable audio terminals on the basis of the call information by the criteria that occupancy time of wireless transmission becomes short and that a packet delay at the time of joining becomes small, a step of requesting packet joining of the selected audio terminal as the joining destination, and a step in which an audio terminal as a joining source starts a voice call upon receipt of a positive response from the audio terminal as the joining destination in response to the request for joining.

Packet joining method, program, and apparatus

In a wireless multi-hop network, a node directly connectable in one hop at a relay node installation point candidate is detected. When a node-to-node connectability diagnosis result demonstrates that an isolated node exists, the candidate enabling a connection to the base station and yet the candidate enabling a one-hop connection to the isolated node is selected as a relay node. When an isolated node still remains, the candidate enabling one-hop connections both to the remaining isolated node and to the isolated node that has newly become connectable to the base station is additionally selected as a relay node from among candidates that do not enable a connection to the base station. The route of 'the remaining isolated node&#x3e;additionally added relay node&#x3e;isolated node that has become connectable to the base station&#x3e;base station' is established.

Relay node installation selection method, relay node installation point selection device, same device-mounted base station, and program product for executing same selection method

Growing community of inventors

Toyko, Japan

Takahiro Ookuma