Method for sending sync beacon message by NAN device, and device

Patent metadata

Field	Value
Publication number	US-11140644-B2
Application number	US-201616088951-A
Country	US
Kind code	B2
Filing date	Mar 28, 2016
Priority date	Mar 28, 2016
Publication date	Oct 5, 2021
Grant date	Oct 5, 2021

Abstract

Embodiments of the present invention relate to the communications field, and provide a method for sending a sync beacon message by a NAN device, and a device, so as to resolve a problem of a sync beacon message conflict that occurs when the NAN device merges to a new cluster in a master role. The method is: when a first device in a first cluster receives first cluster information of a second cluster, if the first device determines to merge to the second cluster, sending a sync beacon message in the second cluster according to a role and a state of the first device in the first cluster. According to the embodiments of the present invention, after merging to a cluster, a NAN device determines whether to send a sync beacon frame.

First claim

What is claimed is:

1. A method for sending a sync beacon frame by a neighbor awareness network (NAN) device, comprising:
receiving, by a first device that is in a first cluster, a message, wherein the message comprises first cluster information of a second cluster, wherein the first cluster information of the second cluster comprises at least one of a cluster identifier of the second cluster, a first anchor master rank (AMR), a first anchor master beacon transmission time (AMBTT), a first time synchronization function (TSF), or a first hop count HC);
setting, by the first device, information of the first device according to the first cluster information of the second cluster, wherein the setting comprises;
setting, by the first device, at least one of a cluster identifier of the first device, anchor master information, a second TSF, or a role and a state of the first device, and wherein setting comprises at least one of:
the cluster identifier of the first device is set to be the same as the cluster identifier of the second cluster;
the anchor master information comprises a second AMR and a second AMBTT, wherein a value of the second AMBTT is set to be equal a value of the first AMBTT;
the second TSF is set to be the same as the first TSF; or
the role and the state of the first device are set to be the same as the role and the state of the first device in the first cluster;

merging, by the first device, to the second cluster; and
after merging to the second cluster, sending, by the first device, a sync beacon message in the second cluster when the first device in the first cluster is in a sync state.

2. The method according to claim 1 , wherein
the anchor master information comprises a second HC, and wherein a value of the second HC is set to be equal a value of the first HC plus one.

3. The method according to claim 1 , wherein receiving, by a first device in a first cluster, a message, wherein the message comprises first cluster information of the second cluster comprises:
receiving, by the first device, a message from a second device that is in the second cluster, wherein the message comprises the first cluster information of the second cluster; or
receiving, by the first device, a message from a third device that is in the first cluster, wherein the third device is in a first NAN data cluster (NDC) of the first cluster, and the message comprises the first cluster information of the second cluster; or
receiving, by the first device, a message from a fourth device that is in the first cluster, wherein the message comprises the first cluster information of the second cluster.

4. The method according to claim 1 , further comprising not sending, by the first device, the sync beacon message in the second cluster when a role of the first device in the first cluster is a non-master device and the state of the first device in the first cluster is a non-sync state.

5. The method according to claim 1 , further comprising not sending, by the first device, the sync beacon message in the second cluster when a role of the first device in the first cluster is a non-master device and the state of the first device in the first cluster is a non-sync state.

6. The method according to claim 1 , wherein when merging to the second cluster, a role and a state of the first device are the same as the role and the state of the first device in the first cluster.

7. The method according to claim 1 , wherein the cluster identifier of the second cluster is different from the cluster identifier of the first cluster and a cluster grade (CG) value of the second cluster is greater than a CG value of the first cluster.

8. The method according to claim 5 , wherein the cluster identifier of the second cluster is different from the cluster identifier of the first cluster and a cluster grade (CG) value of the second cluster is greater than a CG value of the first cluster.

9. A first device, wherein the first device is a neighbor awareness network (NAN) device, and comprises:
a memory storage comprising instructions; and
a processor in communication with the memory, wherein the processor executes the instructions to:
receive a message, wherein the message comprises first cluster information of a second cluster, wherein the first cluster information of the second cluster comprises at least one of a cluster identifier of the second cluster, a first anchor master rank (AMR), a first anchor master beacon transmission time (AMBTT), a first time synchronization function (TSF), or a first hop count HC;
set information of the first device according to the first cluster information of the second cluster, wherein the setting comprises;
setting, by the first device, at least one of a cluster identifier of the first device, anchor master information, a second TSF, or a role and a state of the first device, and wherein setting comprises at least one of:
the cluster identifier of the first device is set to be the same as the cluster identifier of the second cluster;
the anchor master information comprises a second AMR and a second AMBTT, wherein a value of the second AMBTT is set to be equal a value of the first AMBTT;
the second TSF is set to be the same as the first TSF; or
the role and the state of the first device are set to be the same as the role and the state of the first device in the first cluster;

merge to the second cluster; and
after merging to the second cluster, send a sync beacon message in the second cluster when the first device in the first cluster is in a sync state.

10. The first device according to claim 9 , wherein
the anchor master information comprises a second HC, and wherein a value of the second HC is set to be equal a value of the first HC plus one.

11. The first device according to claim 9 , wherein to receive a message the processor executes the instructions to:
receive a message from a second device that is in the second cluster, wherein the message comprises the first cluster information of the second cluster; or
receive a message from a third device that is in the first cluster, wherein the third device is in a first NAN data cluster (NDC) of the first cluster, and the message comprises the first cluster information of the second cluster; or
receive a message from a fourth device that is in the first cluster, wherein the message comprises the first cluster information of the second cluster.

12. The first device according to claim 9 , wherein the processor executes the instructions to:
when the first device receives the message from a second device, obtain an MR of the second device;
when the first device receives the message from a third device, obtain an MR of the third device; and
when the first device receives the message from a fourth device, obtain an MR of the fourth device.

13. The first device according to claim 9 , further comprising wherein the processor executes the instructions to not send the sync beacon message in the second cluster when a role of the first device in the first cluster is a non-master device and a state of the first device in the first cluster is a non-sync state.

14. The first device according to claim 9 , wherein when merging to the second cluster, a role and a state of the first device are the same as the role and the state of the first device in the first cluster.

15. The first device according to claim 9 , wherein the cluster identifier of the second cluster is different from the cluster identifier of the first cluster and a cluster grade (CG) value of the second cluster is greater than a CG value of the first cluster.

16. A non-transitory

Assignees

• Huawei Tech Co Ltd

Inventors

• Pang Gaokun
• Fang Ping

Classifications

• H04W56/001 Primary

  Synchronization between nodes · CPC title

• H04W56/0015 Primary

  one node acting as a reference for the others · CPC title

• H04W74/00

  Wireless channel access · CPC title

• H04W84/20

  Leader-follower arrangements · CPC title

• H04W56/00

  Synchronisation arrangements · CPC title