Data transmission method, network device, and communication system
A data transmission method, a network device, and a communication system are provided. The method includes: acquiring a frequency hopping time period and frequency hopping information when reliable transmission is required; transmitting data according to the frequency hopping information in the frequency hopping time period. Thus, the reliability of data transmission is ensured, the original network is not changed significantly, and the system overhead and resources are saved.
1. A data transmission method, comprising:
acquiring a frequency hopping time period and frequency hopping information when reliable transmission of important data is required, including receiving a frequency hopping guaranteed time slot (FH-GTS) as the frequency hopping time period and the frequency hopping information allocated by a coordinator; and transmitting the important data according to the frequency hopping information at the FH-GTS after synchronization according to the beacon frame sent by the coordinator.
2. The data transmission method according to claim 1 , further comprising: sending an FH-GTS request;
wherein the step of receiving the FH-GTS comprises: receiving a frequency hopping negotiation response command corresponding to the FH-GTS request sent by the coordinator or a notification of the FH-GTS allocated by the coordinator, wherein the frequency hopping negotiation response command or the notification of the FH-GTS carries the FH-GTS and the frequency hopping information.
3. A data transmission method, comprising:
acquiring a frequency hopping time period and frequency hopping information when reliable transmission of important data is required, including receiving a guaranteed time slot (GTS) as the frequency hopping time period allocated by a coordinator and negotiating with the coordinator to determine the frequency hopping information; and
transmitting the important data according to the frequency hopping information in the frequency hopping time period, including receiving a beacon frame sent by the coordinator, and transmitting the important data according to the frequency hopping information at the GTS after synchronization according to the beacon frame sent by the coordinator.
4. A network device, comprising:
an acquiring module configured to receive a frequency hopping guaranteed time slot (FH-GTS) as a frequency hopping time period and frequency hopping information allocated by a coordinator when reliable transmission of important data is required; and
a transmitting module configured to receive a beacon frame sent by the coordinator, and transmit the important data according to the frequency hopping information at the FH-GTS as the frequency hopping time period after synchronizing according to the beacon frame sent by the coordinator.
5. The network device according to claim 4 , wherein
the network device is further configured to send an FH-GTS request; and
the acquiring module is configured to receive a frequency hopping negotiation response command corresponding to the FH-GTS request sent by the coordinator or a notification of the FH-GTS allocated by the coordinator, wherein the frequency hopping negotiation response command or the notification of the FH-GTS carries the FH-GTS and the frequency hopping information.
6. A network device, comprising:
an acquiring module configured to receive a guaranteed time slot (GTS) as a frequency hopping time period allocated by a coordinator, and negotiate with the coordinator to determine frequency hopping information when reliable transmission of important data is required; and
a transmitting module configured to receive a beacon frame sent by the coordinator, and transmit the important data according to the frequency hopping information at the GTS as the frequency hopping time period after synchronizing according to the beacon frame sent by the coordinator.
7. A communication system, comprising:
a coordinator configured to communicate with a network device; allocate a frequency hopping guaranteed time slot (FH-GTS) as a frequency hopping time period and frequency hopping information to the network device; and send a beacon frame to the network device when reliable transmission of important data is required;
and the network device configured to transmit the important data according to the frequency hopping information in the frequency hopping time period; or
the coordinator configured to allocate a guaranteed time slot (GTS) as a frequency hopping time period to the network device, negotiate with the network device to determine frequency hopping information; and send a beacon frame to the network device when reliable transmission of important data is required; and the network device configured to transmit the important data according to the frequency hopping information in the frequency hopping time period.