WIRELESS DEVICE, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION METHOD

• US 20110053494A1
• Filed: 07/21/2010
• Published: 03/03/2011
• Est. Priority Date: 09/03/2009
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Kobayakawa, Shuji
• Granted Patent: US 8,774,732 B2
• Time in Patent Office: Days
• US Class Current: 455/7
• CPC Class Codes: H04B 7/155 Ground-based stations H04B7/204 takes precedence
• CPC Class Codes: H04L 12/5692 Selection among different networks
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04L 45/24 Multipath
• CPC Class Codes: H04W 40/22 using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user

Abstract

A wireless device selects another wireless device that is the relay destination of data and transmits data to a data collector that collects data. Then, the wireless device transmits data obtained by adding relay-destination-device identification information of identifying the another wireless device that is a relay destination to the same as data transmitted to the data collector to the selected wireless device that is the relay destination of data. Moreover, the wireless device transmits the received data to the data collector when data obtained by adding relay-destination-device identification information is received from another wireless device and the device itself corresponds to the relay-destination-device identification information.

Claims

1. A wireless device comprising:

a relay destination selecting unit that selects a first wireless device as a relay destination of data;

a data transmitting unit that transmits first data to a data collector and transmits second data to the first wireless device, the second data containing the first data and relay-destination-device identification information for identifying the first wireless device; and

a data relaying unit that receives the second data from a second wireless device, the data relaying unit transmitting the second data to the data collector when the relay-destination-device identification information indicates the wireless device that includes the data relaying unit.

2. The wireless device according to claim 1, wherein the first wireless device to be selected by the relay destination selecting unit has a radio field intensity not less than a predetermined value from the wireless device that includes the relay destination selecting unit.

3. The wireless device according to claim 1, wherein the data relaying unit transmits the second data to the data collector when a communication state between the wireless device that includes the data relaying unit and the data collector is the best.

4. The wireless device according to claim 1, wherein

the relay destination selecting unit selects a plurality of first wireless devices each being a relay destination of data, and

the data transmitting unit transmits as the second data, data containing the first data and relay-destination-device identification information for identifying the respective first wireless devices.

5. A wireless communication system, comprising:

a first wireless device;

a second wireless device; and

a data collector, wherein

the first wireless device includes

a relay destination selecting unit that selects the second wireless device as a relay destination of data; and

a data transmitting unit that transmits first data to the data collector and transmits second data to the second wireless device, the second data containing the first data and relay-destination-device identification information for identifying the second wireless device,

the second wireless device includes a data relaying unit that receives the second data from the first wireless device and transmits the second data to the data collector when the relay-destination-device identification information indicates the second wireless device, and

the data collector includes a data receiving unit that receives the first data transmitted from the first wireless device and the second data transmitted from the second wireless device.

6. A wireless communication method, comprising

selecting, at a first wireless device, a second wireless device as a relay destination of data;

and

transmitting, at the first wireless device, first data to a data collector;

transmitting, at the first wireless device, second data to the second wireless device, the second data containing the first data and relay-destination-device identification information for identifying the second wireless device;

receiving, at the second wireless device, the second data from the first wireless device;

transmitting, at the second wireless device, the second data to the data collector when the relay-destination-device identification information indicates the second wireless device; and

receiving, at the data collector, the first data transmitted from the first wireless device and the second data transmitted from the second wireless device.