DATA TRANSMISSION METHOD, NETWORK DEVICE, AND COMMUNICATION SYSTEM

• US 20110150042A1
• Filed: 03/04/2011
• Published: 06/23/2011
• Est. Priority Date: 09/05/2008
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: LIU, Yongjun
• Granted Patent: US 8,335,244 B2
• Time in Patent Office: Days
• US Class Current: 375/133
• CPC Class Codes: H04B 1/713 using frequency hopping

Abstract

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.

Claims

1. A data transmission method, comprising:

acquiring, a frequency hopping time period and frequency hopping information when reliable transmission is required; and

transmitting, data according to the frequency hopping information in the frequency hopping time period.

2. The data transmission method according to claim 1, wherein

the acquiring a frequency hopping time period and frequency hopping information when reliable transmission is required comprises:

acquiring the frequency hopping time period and the frequency hopping information when important data is transmitted; and

the transmitting data according to the frequency hopping information in the frequency hopping time period comprises;

transmitting the important data according to the frequency hopping information in the frequency hopping time period.

3. The data transmission method according to claim 2, wherein

the acquiring a frequency hopping time period and frequency hopping information comprises:

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

the transmitting data according to the frequency hopping information in the frequency hopping time period comprises;

receiving a beacon frame sent by the coordinator, and transmitting the data according to the frequency hopping information at the FH-GTS stage after synchronization according to a beacon frame sent by the coordinator.

4. The data transmission method according to claim 3, further comprising:

sending an FH-GTS request;

wherein the receiving an FH-GTS as the frequency hopping time period and the frequency hopping information allocated by a coordinator 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.

5. The data transmission method according to claim 2, wherein

the acquiring a frequency hopping time period and frequency hopping information comprises:

receiving a guaranteed time slot (GTS) as the frequency hopping time period allocated by the coordinator, and negotiating with the coordinator to determine the frequency hopping information; and

the transmitting data according to the frequency hopping information in the frequency hopping time period comprises;

receiving a beacon frame sent by the coordinator, and transmitting the data according to the frequency hopping information at the GTS stage after synchronization according to a beacon frame sent by the coordinator.

6. The data transmission method according to claim 2, wherein

the acquiring a frequency hopping time period and frequency hopping information comprises:

receiving synchronization information, the frequency hopping time period, and the frequency hopping information sent by a receiving end device; and

the transmitting data according to the frequency hopping information in the frequency hopping time period comprises;

transmitting the data according to the frequency hopping information in the frequency hopping time period after synchronization according to the synchronization information.

7. A network device, comprising:

an acquiring module, configured to acquire a frequency hopping time period and frequency hopping information when reliable transmission is required; and

a transmitting module, configured to transmit data according to the frequency hopping information in the frequency hopping time period.

8. The network device according to claim 8, wherein

the acquiring module is configured to acquire a frequency hopping time period and frequency hopping information when important data is transmitted;

and

the transmitting module is configure to transmit the important data according to the frequency hopping information in the frequency hopping time period.

9. The network device according to claim 8, wherein

the acquiring module is configured to receive a frequency hopping guaranteed time slot (FH-GTS) as the frequency hopping time period and the frequency hopping information allocated by a coordinator;

and

the transmitting module is configured to receive a beacon frame sent by the coordinator, and transmit data according to the frequency hopping information at the FH-GTS stage after synchronizes according to a beacon frame sent by the coordinator.

10. The network device according to claim 9, 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.

11. The network device according to claim 8, wherein

the acquiring module is configured to receive a guaranteed time slot (GTS) as the frequency hopping time period allocated by a coordinator, and negotiate with the coordinator to determine the frequency hopping information;

and

the transmitting module is configured to receive a beacon frame sent by the coordinator, and transmit the data according to the frequency hopping information at the GTS stage after synchronizes according to a beacon frame sent by the coordinator.

12. The network device according to claim 8, wherein

the acquiring module is configured to negotiate with a receiving end device to determine synchronization information, the frequency hopping time period, and the frequency hopping information;

and

the transmitting module is configured to transmit the data according to the frequency hopping information in the frequency hopping period after synchronizes according to the synchronization information.

14. The communication system according to claim 12, wherein

the coordinator is configured to allocate a frequency hopping time period and frequency hopping information when important data is transmitted, so that the network transmit the important data according to the frequency hopping information in the frequency hopping time period.

15. The communication system according to claim 12, wherein

the coordinator is configured to allocate a frequency hopping guaranteed time slot (FH-GTS) and frequency hopping information to the network device, and send a beacon frame to the network device;

or

the coordinator is configured to allocate a guaranteed time slot (GTS) to the network device, negotiate with the network device to determine frequency hopping information, and send a beacon frame to the network device.

16. The communication system according to claim 12, wherein the coordinator allocates the FH-GTS for the corresponding network device in a unicast, multicast, or broadcast mode.

13. A communication system, comprising:

a coordinator, configured to communicate with a network device, wherein

the coordinator is configured to allocate a frequency hopping time period and frequency hopping information when reliable transmission is required, so that the network transmits data according to the frequency hopping information in the frequency hopping time period.