Wireless communication apparatus and non-transitory computer readable storage medium

• US 9,215,716 B2
• Filed: 04/02/2012
• Issued: 12/15/2015
• Est. Priority Date: 10/15/2009
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Mie, Kouki, Yamada, Kenji, Inao, Yuichi
• Primary Examiner(s): SEFCHECK, GREGORY B
• Application Number:
  US13/437,348
• Publication Number:
  US 20120188968A1
• Time in Patent Office: 1,352 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 45/026 Details of "hello" or keep-alive messages
• CPC Class Codes: H04W 40/24 Connectivity information management, e.g. connectivity discovery or connectivity update
• CPC Class Codes: H04W 72/54 based on quality criteria
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A wireless communication apparatus on the receiving side receives communication data that is a transmitted to the wireless communication apparatus using one of the plurality of channels. Subsequently, the wireless communication apparatus on the receiving side obtains channel information contained in the communication data received by the receiving unit and judges whether the obtained channel information is target information indicating a channel of a processing target. The wireless communication apparatus on the receiving side performs a receiving process on the received communication data, when the judging unit determines that the obtained channel information is the target information, performs a receiving process on the communication data received by the receiving unit and that, when the judging unit determines that the obtained channel information is not the target information, discards the received communication data.

Claims

1. A wireless communication apparatus comprising:

a processor; and

a memory, wherein the processor executes;

receiving communication data that is transmitted to the wireless communication apparatus, the communication data including address information of the wireless communication apparatus in destination information, and including any channel number information among a plurality of channel numbers;

obtaining the channel number information included in the communication data;

judging whether the obtained channel number information is channel number information indicating a channel of a communication target; and

performing a receiving process on the communication data when it is determined that the obtained channel number information is channel number information indicating the channel of the communication target at the judging, and discarding the received communication data when it is determined that the obtained channel number information is not channel number information indicating the channel of the communication target at the judging, wherein

the processor further executes transmitting, when a HELLO transmission time has arrived, in the manner of a broadcast, a HELLO message containing node information stored in the wireless communication apparatus, and

the HELLO message contains, in addition to the node information of the wireless communication apparatus, other node information including the node information of a gateway (GW), wherein

the node that has received the HELLO message registers a source node into a routing table and registers information indicating that a path to the gateway is routed through the source node into the routing table and a link table, wherein

the routing table stores therein, as path information to a destination node, a hop number, a path quality weight, and a return path link weight, and

the link table stores therein a local sender address, link quality information, the number of times a HELLO has been received, and a HELLO request interval, received via the HELLO messages.

2. The wireless communication apparatus according to claim 1, wherein the processor further executes, when the communication data received at the receiving contains a change instruction indicating that the channel number information indicating a channel of a communication target is to be changed, changing the channel number information to channel number information indicated in the change instruction.

3. The wireless communication apparatus according to claim 1, wherein

the processor further executes appending a channel number to be used by the communication data to an ad-hoc header within an ad-hoc message frame representing the communication data of an application and transmitting the communication data to a destination, and

judging whether the channel number contained in the ad-hoc header within the ad-hoc message frame representing the received communication data is the channel number that is currently designated as a communication target by the wireless communication apparatus and outputting the judgment result.

4. The wireless communication apparatus according to claim 1, wherein

the receiving includes receiving ad-hoc frame data addressed to the wireless communication apparatus,

the judging includes judging whether a channel number is appended to an ad-hoc header in the ad-hoc frame data, when the channel number is appended, obtaining the channel number out of the ad-hoc header, judging whether the obtained channel number matches the channel number of the communication target, when the channel number obtained out of the ad-hoc header matches the channel number of the communication target, outputting the ad-hoc frame data, and

the discarding includes discarding, when no channel number is appended or when the channel number does not match the channel number of the communication target, the ad-hoc frame data.

5. The wireless communication apparatus according to claim 1, wherein the node that has received the HELLO message further registers results of calculating path quality and link quality of the path.

6. The wireless communication apparatus according to claim 1, wherein the channel number information is included in an ad-hoc header within an ad-hoc message frame.

7. The wireless communication apparatus according to claim 1, wherein the HELLO message is compressed by using a compression algorithm and is transmitted to an adjacent node,

a signature is appended to a payload following an ad-hoc header within a data frame transmitted and received among nodes, and

the transmission and the reception are performed after the payload is encrypted by using a common key.

8. A wireless communication apparatus comprising:

a processor; and

a memory, wherein the processor executes;

transmitting communication data to a destination apparatus by using any channel among a plurality of channels, wherein

the transmitting includes generating the communication data including address information of the destination apparatus in destination information, and including channel number information that is a communication target of the destination apparatus, and transmitting the generated communication data to the destination apparatus, wherein

the processor further executes transmitting, when a HELLO transmission time has arrived, in the manner of a broadcast, a HELLO message containing node information stored in the wireless communication apparatus, and

the HELLO message contains, in addition to the node information of the wireless communication apparatus, other node information including the node information of a gateway (GW), wherein

the node that has received the HELLO message registers a source node into a routing table and registers information indicating that a path to the gateway is routed through the source node into the routing table and a link table, wherein

the routing table stores therein, as path information to a destination node, a hop number, a path quality weight, and a return path link weight, and

the link table stores therein a local sender address, link quality information, the number of times a HELLO has been received, and a HELLO request interval, received via the HELLO messages.

9. The wireless communication apparatus according to claim 8, wherein the transmitting includes appending, to the communication data, information instructing that the channel number information that is a communication target is to be changed and transmitting the communication data to the destination apparatus.

10. A non-transitory computer-readable storage medium storing a program for processing a wireless communication, the program causing a computer to execute:

receiving communication data that is transmitted to the wireless communication apparatus, the communication data including address information of the wireless communication apparatus in destination information, and including any channel number information among a plurality of channel numbers;

obtaining the channel number information included in the communication data;

judging whether the obtained channel number information is channel number information indicating a channel of a communication target;

performing a receiving process on the communication data when it is determined that the obtained channel number information is channel number information indicating the channel of the communication target at the judging, and discarding the received communication data when it is determined that the obtained channel number information is not channel number information indicating the channel of the communication target at the judging; and

transmitting, when a HELLO transmission time has arrived, in the manner of a broadcast, a HELLO message containing node information stored in the wireless communication apparatus, wherein

the HELLO message contains, in addition to the node information of the wireless communication apparatus, other node information including the node information of a gateway (GW), wherein

the node that has received the HELLO message registers a source node into a routing table and registers information indicating that a path to the gateway is routed through the source node into the routing table and a link table, wherein

the routing table stores therein, as path information to a destination node, a hop number, a path quality weight, and a return path link weight, and

the link table stores therein a local sender address, link quality information, the number of times a HELLO has been received, and a HELLO request interval, received via the HELLO messages.

11. A non-transitory computer-readable storage medium storing a program for processing a wireless communication, the program causing a computer to execute:

transmitting communication data to a destination apparatus by using any channel among a plurality of channels, wherein

the transmitting includes generating the communication data including address information of the destination apparatus in destination information, and including channel number information that is a communication target of the destination apparatus, and transmitting the generated communication data to the destination apparatus,

the transmitting includes transmitting, when a HELLO transmission time has arrived, in the manner of a broadcast, a HELLO message containing node information stored in the wireless communication apparatus, and

the HELLO message contains, in addition to the node information of the wireless communication apparatus, other node information including the node information of a gateway (GW), wherein

the node that has received the HELLO message registers a source node into a routing table and registers information indicating that a path to the gateway is routed through the source node into the routing table and a link table, wherein

the routing table stores therein, as path information to a destination node, a hop number, a path quality weight, and a return path link weight, and

the link table stores therein a local sender address, link quality information, the number of times a HELLO has been received, and a HELLO request interval, received via the HELLO messages.

12. A wireless communication apparatus comprising:

a processor; and

a memory, wherein the processor executes;

transmitting communication data to a destination apparatus by using any channel among a plurality of channels;

receiving communication data that is transmitted to the wireless communication apparatus, the communication data having been transmitted by using any channel among the plurality of channels, including address information of the wireless communication apparatus in destination information, and including any channel number information among a plurality of channel numbers;

obtaining the channel number information included in the communication data;

judging whether the obtained channel number information is channel number information indicating a channel of a communication target; and

performing a receiving process on the communication data when it is determined that the obtained channel number information is channel number information indicating the channel of the communication target at the judging, and discarding the received communication data when it is determined that the obtained channel number information is not channel number information indicating the channel of the communication target at the judging, wherein

the processor further executes transmitting, when a HELLO transmission time has arrived, in the manner of a broadcast, a HELLO message containing node information stored in the wireless communication apparatus, and

the HELLO message contains, in addition to the node information of the wireless communication apparatus, other node information including the node information of a gateway (GW) , wherein

the node that has received the HELLO message registers a source node into a routing table and registers information indicating that a path to the gateway is routed through the source node into the routing table and a link table, wherein

the routing table stores therein, as path information to a destination node, a hop number, a path quality weight, and a return path link weight, and

the link table stores therein a local sender address, link quality information, the number of times a HELLO has been received, and a HELLO request interval, received via the HELLO messages.