Wireless communication apparatus, program, wireless communication method and wireless communication system
A wireless communication apparatus includes a transmitting portion to transmit a data signal to other wireless communication apparatus, a receiving portion to receive a reception confirmation signal indicating reception of the data signal by the other wireless communication apparatus from the other wireless communication apparatus during a specified period, a determination portion to determine that a predetermined requirement is satisfied if the receiving portion receives a given signal during the specified period, and a control portion to control the transmitting portion to request the other wireless communication apparatus to retransmit the reception confirmation signal if the receiving portion does not normally receive the reception confirmation signal and the determination portion determines that the predetermined requirement is satisfied.
1. A wireless communication apparatus comprising:
a transmitting portion to transmit a data signal to other wireless communication apparatus;
a receiving portion to receive a reception confirmation signal indicating reception of the data signal by the other wireless communication apparatus from the other wireless communication apparatus during a specified period;
a storage portion to store a reception success rate of the reception confirmation signal by the receiving portion and a plurality of conditions;
a setting portion to retrieve the reception success rate and the conditions from the storage portion, the setting portion to select and set a predetermined requirement from the conditions based on the reception success rate;
a determination portion to determine that the predetermined requirement is satisfied if the receiving portion receives a given signal during the specified period;
a control portion to control the transmitting portion to request the other wireless communication apparatus to retransmit the reception confirmation signal if the receiving portion does not normally receive the reception confirmation signal and the determination portion determines that the predetermined requirement is satisfied; and
wherein the retransmit request includes a different data format then the data signal.
2. The wireless communication apparatus according to claim 1 , wherein
the determination portion determines that the requirement is satisfied further if a reception strength of the given signal is equal to or higher than a threshold.
3. The wireless communication apparatus according to claim 1 , wherein
the determination portion determines that the requirement is satisfied further if a preamble is detected from the given signal.
4. The wireless communication apparatus according to claim 1 , wherein
the given signal contains error detection data for detecting an error of data represented by the given signal, and
the determination portion determines that the requirement is satisfied further if an error is detected from data represented by the given signal based on the error detection data.
5. The wireless communication apparatus according to claim 1 , wherein
the determination portion determines that the requirement is satisfied further if a destination of the given signal is its own apparatus.
6. The wireless communication apparatus according to claim 1 , wherein
the determination portion determines that the requirement is satisfied further if the given signal is a data frame of the reception confirmation signal.
7. The wireless communication apparatus according to claim 1 , wherein
the determination portion determines that the requirement is satisfied further if a data amount of the given signal is the same as or similar to a data amount of the reception confirmation signal.
8. The wireless communication apparatus according to claim 2 , further comprising:
a threshold setting portion to dynamically set the threshold based on the reception success rate.
9. The wireless communication apparatus according to claim 4 , wherein
the determination portion determines that the requirement is satisfied if a destination of the given signal is its own apparatus or the given signal is a data frame of the reception confirmation signal; and
if an error is detected from data represented by the given signal based on the error detection data.
10. A non-transitory computer-readable storage medium storing a computer program which, when executed by a computer, serves as a wireless communication apparatus performing a wireless communication method, the method including:
transmitting a data signal to other wireless communication apparatus;
receiving a reception confirmation signal indicating reception of the data signal by the other wireless communication apparatus from the other wireless communication apparatus during a specified period;
storing a reception success rate of the reception confirmation signal and a plurality of conditions;
selecting and setting a predetermined requirement from the conditions based on the reception success rate;
determining whether the predetermined requirement is satisfied when a given signal is received during the specified period;
requesting the other wireless communication apparatus to retransmit the reception confirmation signal if the reception confirmation signal is not normally received if the predetermined requirement is satisfied; and
wherein the retransmit request includes a different data format then the data signal.
11. A wireless communication method performed in a wireless communication apparatus comprising the steps of:
transmitting a data signal to other wireless communication apparatus;
storing a reception success rate of a reception confirmation signal and a plurality of conditions;
selecting and setting a predetermined requirement from the conditions based on the reception success rate;
determining whether the predetermined requirement is satisfied when a given signal is received during a specified period where a reception confirmation signal indicating reception of the data signal by the other wireless communication apparatus is expected to be transmitted from the other wireless communication apparatus;
requesting the other wireless communication apparatus to retransmit the reception confirmation signal if the reception confirmation signal is not normally received and the given signal is received during the specified period; and
wherein the retransmit request includes a different data format then the data signal.
12. A wireless communication system including a plurality of wireless communication apparatus wirelessly communicating with each other, each wireless communication apparatus comprising:
a transmitting portion to transmit a data signal to other wireless communication apparatus;
a receiving portion to receive a reception confirmation signal indicating reception of the data signal by the other wireless communication apparatus from the other wireless communication apparatus during a specified period;
storing a reception success rate of the reception confirmation signal by the receiving portion and a plurality of conditions;
selecting and setting a predetermined requirement from the conditions based on the reception success rate;
a determination portion to determine that the predetermined requirement is satisfied if the receiving portion receives a given signal during the specified period;
a control portion to control the transmitting portion to request the other wireless communication apparatus to retransmit the reception confirmation signal if the receiving portion does not normally receive the reception confirmation signal and the determination portion determines that the predetermined requirement is satisfied; and
wherein the retransmit request includes a different data format then the data signal.