Wireless system, wireless device, non-transitory computer-readable storage medium having stored therein communication program, and communication method
A communication system as an example of an exemplary embodiment includes two mobile terminals and two BLE terminals. The mobile terminals establish connections with the BLE terminals. Specifically, one of the mobile terminals and one of the BLE terminals are connected together such that the mobile terminal is a central and the BLE terminal is a peripheral. The BLE terminal connected as a peripheral repeatedly executes advertising and a scan, thereby exchanging application data with the other BLE terminal connected as a peripheral.
1. A wireless system including a plurality of devices capable of performing wireless communication,
a first device among the plurality of devices executing:
acquiring a single piece of application data for an application;
wirelessly transmitting a broadcast or multicast packet; and
wirelessly receiving a broadcast or multicast packet from another device,
the first device repeatedly executing the transmitting and receiving; and
in the transmitting,
dividing the application data into a plurality of pieces, and
separately transmitting each piece of the divided application data in a respective one of a plurality of packets,
the packets being transmitted via one of broadcast and multicast,
wherein each of the packets respectively having one of the plurality of pieces of the divided application data further comprises respective first information, the respective first information identifying a part of the divided application data included in the respective one of the plurality of the packets as a respective one piece of the plurality of pieces of divided application data,
wherein at least one packet includes timing information, the timing information indicating at least one of:
a timing of a subsequent transmitting or the receiving; or a length of an execution period of a subsequent transmitting or receiving, the length of the execution period being a period of time of transmitting or receiving.
2. The wireless system of claim 1 , wherein each packet transmitted by the first device includes the timing information.
3. The wireless system of claim 1 , wherein a first packet transmitted by the first device includes the timing information.
4. The wireless system of claim 1 , wherein a second device receives the at least one packet and adjusts a timing of receiving a packet or transmitting a packet based on the timing indicated by the timing information.
5. The wireless system of claim 4 , wherein the second device adjusts the timing of receiving or transmitting a packet to coincide with the timing indicated by the timing information.
6. The wireless system of claim 2 , wherein a second device receives the packets and adjusts a timing of receiving a packet based on the timing information and whether the second device received the plurality of pieces of divided application data.
7. The wireless system of claim 6 , wherein the second device determines whether the second device received a piece of the divided application data based on the respective first information in each packet received and adjusts the timing of receiving packets to coincide with transmission times for pieces of the divided data not received indicated by the timing information.
8. The wireless system of claim 1 , wherein a second device receives the at least one packet and adjusts a period of time of receiving a packet or transmitting a packet based on the length of the execution period indicated by the timing information.
9. The wireless system of claim 8 , wherein the second device adjusts the period of time of receiving or transmitting a packet to coincide with the length of the execution period indicated by the timing information.
10. The wireless system of claim 6 , wherein the second device determines whether the second device received a piece of the divided application data based on the respective first information in each packet received and adjusts the period of time of receiving packets to coincide with the periods of time for transmission of pieces of the divided data not received.