JP2019134458A - Anchor master AM management method and node - Google Patents

Abstract

To provide an anchor master AM management method and a node that solve a problem in which resources are excessively consumed.SOLUTION: When a first node receives a first synchronization beacon frame transmitted by a second node in a neighbor aware network, carried anchor master information of the first node includes a second AMR, and the second AMR includes second MAC address information. When the first AMR is lower than the second AMR, first MAC address information is the same as the second MAC address information, and a master rank MR of the first node is higher than the first AMR, the anchor master information of the first node is updated according to the first anchor master information, and when the preset node status of the first node is in a synchronization state, the first node transmits a second synchronization beacon frame or when the preset node status of the first node is an asynchronization state, the first node skips transmission of the synchronization beacon frame.SELECTED DRAWING: Figure 1

Description

  The present invention relates to the field of wireless communication technology, and in particular, to an anchor master AM management method and a node.

  Currently, social and localization have become mainstream modes in the mobile Internet field. In particular, along with the proliferation of mobile nodes with wireless-fidelity (Wi-Fi) interfaces, in Wi-Fi technology, beacon frames are periodically transmitted using the central node, External nodes can be associated with the central node. However, there are limitations to the network structure and data transmission in the 802.11 protocol. For example, if there is no central node, it is difficult to perform a discovery service. Currently, Neighbor Awareness Networking (NAN) mechanisms are commonly used to solve this problem, whereby multiple NAN nodes form a NAN cluster. Nodes in the same NAN cluster have the same cluster identifier, and each node has its own attributes including role and state. There are two roles: master node (Master) and non-master node (non-Master). There are two states, synchronous (sync) and asynchronous (non-sync). Nodes in Sync state are responsible for maintaining cluster synchronization. Master is in Sync state and non-Master can be in Sync state or non-sync state. Each node further includes a Master Rank (MR), the Master with the highest MR in the NAN cluster becomes the Anchor Master (AM), and all other nodes are in time with the AM Keeping synchronized, this ensures synchronization of the entire NAN cluster. In a NAN cluster, a typical application scenario is that multiple nodes perform mutual service discovery before association. In order to perform service discovery between nodes, the nodes in the NAN cluster must operate via the NAN social channel and remain awake for a specified period of time. For example, the social channel of the 2.4 GHz channel is channel 6. In some scenarios, the NAN needs to run in the background for a long time. Therefore, energy saving control needs to be performed in the nodes in the NAN, and it is specified that the node wakes up only when a discovery window (DW) arrives, which enables service discovery and cluster synchronization on the social channel Execute.

  In the prior art, nodes need to be synchronized frequently to ensure that there is no significant deviation between the two system clocks, ie, each Master and each Sync non-Master is synchronized within the DW. Send a Beacon frame. According to existing rules, when a node in a cluster receives an AM Sync Beacon frame, the Anchor Master Rank (AMR) in the Sync Beacon frame is recorded by the majority of the nodes in the cluster. If the media access control (MAC) address information in the Sync Beacon frame is the same as the MAC address information of the AM recorded by the node, Most of the nodes can change their role to become AM in a short time. As a result, a large amount of Sync Beacon needs to be transmitted in a short time, consuming excessive air interface resources.

  The present invention provides an anchor master AM management method and node, which can reduce the amount of beacon transmitted by AM in a NAN network in a short time, and waste air interface resources. Is effectively reduced.

A first aspect of an embodiment of the present invention provides an anchor master AM management method, which is used in a neighbor aware network,
Receiving a first synchronization beacon frame transmitted by a second node in a neighbor aware network by the first node, wherein the first synchronization beacon frame carries first anchor master information; The first anchor master information includes the first anchor master rank AMR, the first AMR includes the first MAC address information, and the first node anchor master information includes the second AMR. And the second AMR includes the second MAC address information, and
When the first AMR is lower than the second AMR, the first MAC address information is the same as the second MAC address information, and the master rank MR of the first node is higher than the first AMR, Updating the anchor master information of the first node according to the first anchor master information by the first node;
A step of transmitting a second synchronous beacon frame by the first node when the preset node status of the first node is in a synchronous state, or the preset node status of the first node is in an asynchronous state And skipping sending synchronous beacon frames by the first node, and
including.

Referring to the first aspect, in the first implementation of the first aspect of the present invention, the second state is set by the first node when the preset node status of the first node is in a synchronized state. Prior to sending the sync beacon frame, the method
Determining by the first node whether the node status prior to the preset node status of the first node is in synchronization;
Sending a second synchronization beacon frame by the first node if the node status before the preset node status of the first node is in a synchronized state, or the preset of the first node Skips sending the second sync beacon frame in the current window by the first node and the second sync beacon in the next discovery window if the node status before the node status is asynchronous Sending a frame;
Further included.

  Referring to the first aspect or the first implementation of the first aspect, in the second implementation of the first aspect of the invention, the preset node status of the first node is the first synchronization It includes the state of the first node before the beacon frame is received, the state of the first node when the current discovery window starts, or the state of the first node in the previous discovery window.

Referring to the first aspect or the second implementation of the first aspect, in the third implementation of the first aspect of the invention, the step of transmitting the second synchronization beacon frame by the first node comprises:
Transmitting a second synchronization beacon frame by the first node in the current window or the next discovery window.

With reference to any one of the first aspect or the first to third implementations of the first aspect, in the fourth implementation of the first aspect of the present invention, the first node After the step of updating the anchor master information of the first node according to the anchor master information, the method
Receiving by a first node a third synchronization beacon frame transmitted by a third node in a neighbor aware network, wherein the third synchronization beacon frame carries third anchor master information; The third anchor master information includes a third AMR, and the updated anchor master information of the first node includes a fourth AMR; and
If the third AMR is lower than the fourth AMR, skip the update of the anchor master information of the first node by the first node, and if the first node is in sync, the first Sending a synchronous beacon frame by the first node within the next discovery window, or if the third AMR is higher than the fourth AMR, according to the third anchor master information by the first node Updating the updated anchor master information;
Further included.

A second aspect of the present invention provides an anchor master AM management method, which is used in a neighbor aware network,
Receiving a first synchronization beacon frame transmitted by a second node in a neighbor aware network within a second half of the current discovery window by the first node, wherein the first synchronization beacon frame is Carrying the first anchor master information, the first anchor master information includes the first AMR, and the anchor master information of the first node includes the second AMR; and
Skipping updating the preset node status of the first node and the anchor master information of the first node by the first node when the first AMR is lower than the second AMR; and
including.

Referring to the second aspect, in the first implementation of the second aspect of the invention, the method comprises:
Determining by the first node whether the preset node status of the first node is in a synchronized state;
Sending a second synchronization beacon frame by the first node within the next discovery window if the preset node status of the first node is in a synchronized state, or preset by the first node Skipping sending synchronous beacon frames by the first node when the node status is asynchronous,
Further included.

With reference to the second aspect, in a second implementation of the second aspect of the invention, the method comprises:
Determining by the first node whether the current node status of the first node is synchronized;
Further determining, by the first node, whether the previous node status of the first node is in a synchronized state if the preset node status of the first node is in a synchronized state;
Sending a second synchronous beacon frame by the first node if the node status before the first node is in a synchronized state, or if the node status before the first node is in an asynchronous state Skip sending synchronous beacon frames by the first node, or skip sending synchronous beacon frames by the first node if the current node status of the first node is out of sync And steps to
Further included.

A third aspect of the present invention provides an anchor master AM management method, which is used in a neighbor aware network,
Determining by the first node whether the previous node status of the first node is asynchronous;
Send a frame within the current discovery window by the first node when the node status before the first node is asynchronous and the current node status of the first node is synchronous or asynchronous Step to skip that,
including.

  Referring to the third aspect, in the first implementation of the third aspect of the present invention, the method includes a period of the second half of the current discovery window in which the current node status of the first node is in a synchronized state If the node status of the first node is in sync, the first node skips sending a sync beacon frame in the current discovery window and the sync beacon frame in the next discovery window The method further includes the step of transmitting.

A fourth aspect of the present invention provides an anchor master AM management method, which is used in a neighbor aware network,
Obtaining an anchor master rank MR of another node in the neighbor aware network by a first node;
Receiving a first synchronization beacon frame transmitted by a second node in a neighbor aware network by the first node, wherein the first synchronization beacon frame carries first anchor master information; The first anchor master information includes the first anchor master rank AMR, the first AMR includes the first medium access control MAC address information, and the second anchor master information of the first node Includes the second MAC address information, and
If the first AMR is lower than the preset percentage of MR obtained by the first node and the first MAC address information is the same as the second MAC address information, then the first node Skipping updating the second anchor master information;
including.

A fifth aspect of the present invention provides a node, which is used in a neighbor aware network,
A transmission module configured to receive a first synchronization beacon frame transmitted by a second node in a neighbor aware network, wherein the first synchronization beacon frame carries first anchor master information. The first anchor master information includes the first anchor master rank AMR, the first AMR includes the first medium access control MAC address information, and the anchor master information of the first node is the first A transmission module including two AMRs, wherein the second AMR includes second MAC address information;
When the first AMR is lower than the second AMR, the first MAC address information is the same as the second MAC address information, and the master rank MR of the first node is higher than the first AMR, A processing module configured to update the anchor master information of the first node according to the first anchor master information;
Including
The transmission module is further configured to transmit a second synchronization beacon frame when the processing module determines that the preset node status of the first node is in a synchronized state, or the transmission module is , Further configured to skip transmitting a synchronous beacon frame when the processing module determines that the preset node status of the first node is asynchronous.

With reference to the fifth aspect, in a first implementation of the fifth aspect of the invention, the processing module comprises:
Further configured to determine whether the node status before the preset node status of the first node is in a synchronized state;
The transmission module transmits a second synchronization beacon frame when the processing module determines that the node status before the preset node status of the first node is in synchronization, or the first node Skips sending the second synchronous beacon frame within the current discovery window when the processing module determines that the node status prior to the preset node status is asynchronous, the next discovery window And is further configured to transmit a second synchronization beacon frame.

  With reference to the fifth aspect or the first implementation of the fifth aspect, in the second implementation of the fifth aspect of the invention, the preset node status of the first node is the first synchronization Contains the state of the first node before the beacon frame is received by the sending module, the state of the first node when the current discovery window starts, or the state of the first node within the previous discovery window .

Referring to the fifth aspect or the second implementation of the fifth aspect, in the third implementation of the fifth aspect of the present invention, the transmission module specifically includes:
It is configured to transmit a second synchronization beacon frame within the current discovery window or the next discovery window.

With reference to any one of the first to third implementations of the fifth aspect or the fifth aspect, in the fourth implementation of the fifth aspect of the invention, the transmission module comprises:
Further configured to receive a third synchronization beacon frame transmitted by a third node in the neighbor aware network, wherein the third synchronization beacon frame carries third anchor master information and a third anchor The master information includes the third AMR, the updated anchor master information of the first node includes the fourth AMR,
The processing module skips updating the anchor master information of the first node if the third AMR is lower than the fourth AMR, and if the first node is in sync, the next discovery Further configured to send a synchronous beacon frame within the window, or the processing module updates the first node according to the third anchor master information when the third AMR is higher than the fourth AMR. Further configured to update the updated anchor master information.

A sixth aspect of the invention provides a node, which is used in a neighbor aware network,
A transmission module configured to receive a first synchronization beacon frame transmitted by a second node in a neighbor aware network within a second half of the current discovery window, the first synchronization beacon frame Transmits the first anchor master information, the first anchor master information includes the first anchor master rank AMR, and the first node anchor master information includes the second AMR Module,
A processing module configured to skip updating the current node status of the first node and the anchor master information of the first node when the first AMR is lower than the second AMR;
including.

Referring to the sixth aspect, in the first implementation of the sixth aspect of the present invention, the processing module comprises:
Further configured to determine whether the current node status of the first node is synchronized;
The sending module sends a second sync beacon frame within the next discovery window when the processing module determines that the current node status of the first node is in sync, or It is further configured to skip transmitting a synchronous beacon frame when the processing module determines that the current node status is asynchronous.

Referring to the sixth aspect, in the second implementation of the sixth aspect of the present invention, the processing module comprises:
Determine if the current node status of the first node is synchronized,
Further configured to further determine whether the previous node status of the first node is in synchronization if the current node status of the first node is in synchronization;
The sending module sends a second sync beacon frame within the next discovery window when the processing module determines that the node status before the first node is in sync, or When the processing module determines that the previous node status is asynchronous, the processing module determines to skip sending a synchronous beacon frame or that the current node status of the first node is asynchronous If so, it is further configured to skip transmitting a synchronous beacon frame.

A seventh aspect of the present invention provides a node, which is used in a neighbor aware network,
A processing module configured to determine whether the node status before the first node is asynchronous; and
A synchronous beacon frame within the current discovery window when the processing module determines that the previous node status of the first node is asynchronous and the current node status of the first node is synchronous or asynchronous A transmission module configured to skip transmitting
including.

Referring to the seventh aspect, in the first implementation of the seventh aspect of the invention, the transmission module is:
If the processing node determines that the current node status of the first node is synchronous or asynchronous and the node status of the first node is synchronous within the second half of the current discovery window, It is further configured to skip sending synchronization beacon frames within the current discovery window and to send synchronization beacon frames within the next discovery window.

An eighth aspect of the present invention provides a node, which is used in a neighbor aware network,
Obtain the master rank MR of another node in the neighbor aware network,
A transmission module configured to receive a first synchronization beacon frame transmitted by a second node in a neighbor aware network, wherein the first synchronization beacon frame carries first anchor master information. The first anchor master information includes the first anchor master rank AMR, the first AMR includes the first medium access control MAC address information, and the second anchor master information of the first node Includes a transmission module including second MAC address information;
If the first AMR obtained by the sending module is lower than the preset percentage of MR obtained by the sending module and the first MAC address information is the same as the second MAC address information, the second A processing module configured to skip updating the anchor master information of the
including.

A ninth aspect of the present invention provides a node, which is used in a neighbor aware network,
A processor;
Memory configured to store computer executable program code;
A communication interface;
Including receiver and transmitter,
A processor, a receiver, a transmitter, a storage device, and a communication interface communicate with each other using a bus;
When the processor reads the program code and data stored in the storage device, the program code includes an instruction, and when the processor executes the instruction, the instruction performs the following operations:
An operation of using a receiver to receive a first synchronization beacon frame transmitted by a second node in a neighbor aware network, wherein the first synchronization beacon frame carries first anchor master information. The first anchor master information includes the first anchor master rank AMR, the first AMR includes the first medium access control MAC address information, and the anchor master information of the first node is the first An operation that includes two AMRs, wherein the second AMR includes second MAC address information;
When the first AMR is lower than the second AMR, the first MAC address information is the same as the second MAC address information, and the master rank MR of the first node is higher than the first AMR, Updating the anchor master information of the first node according to the first anchor master information;
The operation of transmitting the second synchronous beacon frame using the transmitter when the preset node status of the first node is in a synchronized state, or the preset node status of the first node is in an asynchronous state The operation of skipping sending synchronous beacon frames, and
Makes it possible to execute

Referring to the ninth aspect, in the first implementation of the ninth aspect of the present invention, when the preset node status of the first node is in a synchronized state, the transmitter is used to Prior to the operation of sending a synchronous beacon frame, the processor performs the following operations:
Determining whether the node status before the preset node status of the first node is in a synchronized state;
An operation to transmit a second synchronized beacon frame using a transmitter when the node status before the preset node status of the first node is in a synchronized state, or the preset of the first node Skips sending the second sync beacon frame within the current discovery window using the transmitter and the second sync within the next discovery window when the node status before the node status is asynchronous An operation of transmitting a beacon frame;
Is executed further.

  Referring to the ninth aspect or the first implementation of the ninth aspect, in the second implementation of the ninth aspect of the present invention, the preset node status of the first node is the first synchronization Contains the state of the first node before the beacon frame is received by the receiver, the state of the first node when the current discovery window starts, or the state of the first node within the previous discovery window .

Referring to the ninth aspect or the second implementation of the ninth aspect, in a third implementation of the ninth aspect of the invention, the operation of transmitting a second synchronous beacon frame by a processor using a transmitter Is
Including transmitting a second synchronized beacon frame within a current discovery window or a next discovery window using a transmitter.

With reference to any one of the ninth aspect or the first to third implementations of the ninth aspect, in the fourth implementation of the ninth aspect of the invention, the first implementation is performed according to the first anchor master information. After the operation of updating the anchor master information of the node, the processor
An operation of using a receiver to receive a third synchronization beacon frame transmitted by a third node in the neighbor awareness network, wherein the third synchronization beacon frame carries third anchor master information. The third anchor master information includes a third AMR and the updated anchor master information of the first node includes a fourth AMR; and
If the third AMR is lower than the fourth AMR, skip updating the anchor master information of the first node, and if the first node is in a synchronized state, use the transmitter to An operation to transmit a synchronous beacon frame within the discovery window, or an operation to update the updated anchor master information of the first node according to the third anchor master information when the third AMR is higher than the fourth AMR When,
Is executed further.

A tenth aspect of the present invention provides a node, which is used in a neighbor aware network,
A processor;
Memory configured to store computer executable program code;
A communication interface;
Including receiver and transmitter,
A processor, a receiver, a transmitter, a storage device, and a communication interface communicate with each other using a bus;
When the processor reads the program code and data stored in the storage device, the program code includes an instruction, and when the processor executes the instruction, the instruction performs the following operations:
An operation of receiving a first synchronization beacon frame transmitted by a second node in a neighbor aware network within a second half of the current discovery window, wherein the first synchronization beacon frame is a first synchronization beacon frame Carrying the anchor master information, the first anchor master information includes the first AMR, and the anchor master information of the first node includes the second AMR; and
If the first AMR is lower than the second AMR, it is possible to perform an operation that skips updating the current node status of the first node and the anchor master information of the first node. .

Referring to the tenth aspect, in a first implementation of the tenth aspect of the invention, the processor performs the following operations:
An operation to determine whether the current node status of the first node is synchronous;
When the current node status of the first node is in a synchronized state, the operation of transmitting the second synchronization beacon frame within the next discovery window using the transmitter, or the current node status of the first node is An operation to skip sending a synchronous beacon frame when in an asynchronous state;
Is executed further.

Referring to the tenth aspect, in a second implementation of the tenth aspect of the invention, the processor performs the following operations:
An operation to determine whether the current node status of the first node is synchronous;
An operation to further determine if the previous node status of the first node is in a synchronized state if the current node status of the first node is in a synchronized state;
If the node status before the first node is in a synchronized state, the action of transmitting the second synchronization beacon frame within the next discovery window using the transmitter, or the node status before the first node is An action to skip sending a synchronous beacon frame when in an asynchronous state, or an action to skip sending a synchronous beacon frame when the current node status of the first node is in an asynchronous state;
Is executed further.

An eleventh aspect of the present invention provides a node, which is used in a neighbor aware network,
A processor;
Memory configured to store computer executable program code;
A communication interface;
Including receiver and transmitter,
A processor, a receiver, a transmitter, a storage device, and a communication interface communicate with each other using a bus;
When the processor reads the program code and data stored in the storage device, the program code includes an instruction, and when the processor executes the instruction, the instruction performs the following operations:
An operation to determine whether the node status before the first node is asynchronous;
Skip sending synchronous beacon frames within the current discovery window when the previous node status of the first node is asynchronous and the current node status of the first node is synchronous or asynchronous And the action to
Make it possible to
Provides a node.

Referring to the tenth aspect, in a first implementation of the tenth aspect of the invention, the processor performs the following operations:
If the current node status of the first node is in the synchronized state and the node status of the first node is in the synchronized state within the second half of the current discovery window, the current discovery window using the transmitter The process of transmitting the synchronization beacon frame within the next discovery window is further executed.

A twelfth aspect of the present invention provides a node, which is used in a neighbor aware network,
A processor;
Memory configured to store computer executable program code;
A communication interface;
Including receiver and transmitter,
A processor, a receiver, a transmitter, a storage device, and a communication interface communicate with each other using a bus;
When the processor reads the program code and data stored in the storage device, the program code includes an instruction, and when the processor executes the instruction, the instruction performs the following operations:
Obtaining the master rank MR of another node in the neighbor aware network;
An operation of receiving a first synchronization beacon frame transmitted by a second node in a neighbor aware network, wherein the first synchronization beacon frame carries first anchor master information and the first anchor master The information includes the first anchor master rank AMR, the first AMR includes the first medium access control MAC address information, and the second anchor master information of the first node is the second MAC. Actions, including address information,
If the first AMR is lower than the preset percentage of MR obtained by the first node and the first MAC address information is the same as the second MAC address information, the second anchor master An action to skip updating the information,
Makes it possible to execute

  In the embodiment of the present invention, the first node updates the anchor master information of the first node according to the first anchor master information, the anchor master information of the first node, and the MR of the first node. A second synchronization beacon frame is transmitted when the first node is in a synchronized state, whereby another node is synchronized with the first node. This prevents the node becoming the AM from transmitting a synchronous beacon frame to some extent, effectively reducing the waste of air interface resources.

5 is a flowchart of an anchor master AM management method according to an embodiment of the present invention. 6 is a flowchart of another anchor master AM management method according to an embodiment of the present invention; 6 is a flowchart of another anchor master AM management method according to an embodiment of the present invention; 6 is a flowchart of another anchor master AM management method according to an embodiment of the present invention; It is a schematic block diagram of the node by one Embodiment of this invention. FIG. 6 is another schematic configuration diagram of another node according to an embodiment of the present invention. FIG. 6 is another schematic configuration diagram of another node according to an embodiment of the present invention. FIG. 6 is another schematic configuration diagram of another node according to an embodiment of the present invention. It is a schematic block diagram of the node by one Embodiment of this invention. FIG. 6 is another schematic configuration diagram of another node according to an embodiment of the present invention. FIG. 6 is another schematic configuration diagram of another node according to an embodiment of the present invention. FIG. 6 is another schematic configuration diagram of another node according to an embodiment of the present invention.

  The following clearly and fully describes the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a few but not all of the embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

  In the specification, claims, and accompanying drawings of the present invention, terms such as “first” and “second” are intended to distinguish between similar objects, but not necessarily in a particular order or No order is shown. It is understood that data so called may be exchanged in appropriate circumstances so that the embodiments described herein can be implemented in an order other than that shown and described herein. It should be. In addition, the terms “include”, “have”, or any other variation thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or modules is not necessarily limited to explicitly listed steps or modules, and is not explicitly listed or processes, methods, products Or another step or module specific to the device. Module divisions in this specification are merely logical divisions, and there may be other divisions during implementation in actual application. For example, multiple modules may be combined or integrated into another system, or some features may be ignored or not performed. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be implemented through several interfaces. Indirect coupling or communication connections between modules may be implemented electronically or otherwise, which is not limited in this specification. In addition, a module or submodule described as a single component above may or may not be physically separated, or may or may not be a physical module, or It may be distributed among a plurality of circuit modules. Some or all of the modules may be selected according to actual requirements to achieve the objectives of the solutions of the embodiments of the present invention.

  Embodiments of the present invention provide an anchor master AM management method and node used in a neighbor aware network. The neighbor aware network includes at least one cluster (Cluster), each cluster including at least one node, and a node is a device in the cluster. These nodes form a distributed network. A node may be a network element, or any device having an equivalent status, which is not specifically limited here. Details are described below.

  In this specification, node attributes include node role and node status. There are two roles: master node (Master) and non-master node (Non-Master). There are two node statuses: synchronous (Sync) and asynchronous (Non-Sync). The master is classified into an anchor master (AM) and a non-anchor master. The master node status may be synchronous and the non-master node status may be synchronous or asynchronous. Non-Master Sync state nodes and Non-Master Non-Sync state nodes are in the Non-Master role. Each node may have one of the following attributes: Master role, Non-Master Sync state, or Non-Master Non-Sync state. For example, if the node is in the Master role, this indicates that the node is in a synchronized state, and if the node is in a Non-Master Sync state, this indicates that the node is in a synchronized state, or If the node is in a Non-Master Non-Sync state, this indicates that the node is in an asynchronous state.

  In addition, Sync Beacon frames received by a node can be classified into near Beacon frames and far Beacon frames. A nearby Beacon frame is a Receive Signal Strength Indicator (RSSI) that is greater than a first threshold, eg, RSSI = −60 dBm, and a far Beacon frame is greater than a second threshold. A Beacon frame that has an RSSI that is greater than the first threshold, eg, RSSI = −75 dBm.

  In this embodiment of the invention, each node has its own MR, and the node status can be defined to prevent more nodes from becoming AM, The anchor master information is AM node anchor master information recorded or stored in the AM node. In this embodiment of the present invention, the following four solutions are mainly provided in order to reduce the amount of Sync Beacon frames transmitted in a short time in the neighbor aware network.

  I. The node is blocked from sending a Sync Beacon frame using the node's preset status.

  1． Nodes other than the AM node are non-AM nodes. After updating the anchor master information of the non-AM node according to the received Sync Beacon frame sent by another node, the non-AM node checks if the non-AM node's preset node status is in sync It is necessary to judge. If so, a Sync Beacon frame is transmitted, otherwise a Sync Beacon frame is not transmitted. In this way, even if a non-AM node becomes an AM node (switches to a synchronized state or keeps a synchronized state), a Sync Beacon frame is not transmitted after the current node status is switched to a synchronized state, and the above-mentioned The Sync Beacon frame is transmitted only after the determination condition is satisfied. In other words, not all AM nodes transmit Sync Beacon frames. This limits the amount of Sync Beacon frames transmitted by the AM node to some extent and reduces waste of air interface resources.

  2． If a non-AM node receives a Sync Beacon frame within the second half of the DW, the node status and anchor master information for that node will not be updated even if the AMR in the Sync Beacon frame is lower than that node's AMR. That is, the non-AM node is prevented from becoming an AM node, and as a result, no Sync Beacon frame is transmitted. Using this mechanism, the amount of non-AM nodes that can become AM nodes during some special time periods can be effectively reduced, which reduces the amount of Sync Beacon frames transmitted. Waste of air interface resources is reduced.

  3． If the current node status of a node is in sync, a reference to the previous node status of that node needs to be made. That is, if the previous node status is synchronous, the node sends a Sync Beacon frame, or if the previous node status is asynchronous, the node does not send a Sync Beacon frame, which causes a Sync Beacon frame Is further limited, and the amount of Sync Beacon frames to be transmitted is reduced.

  II. Whether to transmit the Sync Beacon frame is determined according to the MR detection result of another node detected by the node in a certain period.

  Each node in the NAN network acquires and records the MR of another node in advance. If the AMR in the Sync Beacon frame received by the node is lower than the pre-set percentage of MR obtained and the MAC address information in the Sync Beacon frame is the same as the node MAC address information, this is Indicates that the AMR of the node corresponding to the Sync Beacon frame in the neighbor aware network is lower than most of the nodes, indicating that the Sync Beacon frame may have been sent by a fake AM node, which The master information is not updated and the Sync Beacon frame is not transmitted. Therefore, the amount of AM nodes and the amount of Sync Beacon frames are reduced, and air interface resources are saved.

  Referring to FIG. 1, in one embodiment of the present invention, the change of the first node of the non-AM role is used as an example to describe the anchor master AM management method in this embodiment of the present invention. The method includes the following steps.

  101. The first node receives the first synchronization beacon frame transmitted by the second node in the neighbor aware network.

  The first Sync Beacon frame carries the first anchor master information, the first anchor master information includes the first anchor master rank AMR, the first AMR is the first The medium access control MAC address information of the first node, the anchor master information of the first node includes the second AMR, and the second AMR includes the second MAC address information.

  In practical applications, the message that can carry the first anchor master information can be a Sync Beacon frame, a Service Discovery Frame, or another message in the NAN, or of course, newly It can be an extended or newly defined message. A specific conveying method is not limited in this specification.

  In addition, the Sync Beacon frame includes at least one of AMR information, HC information, Anchor Master Beacon Transmission Time (AMBTT) information, and Time Synchronization Function (TSF) information. May be included. AM information, AMR information, or MAC address information may be the corresponding information value, or may be in another form of representation, or a derivative of these information values or these combined with other information It may be a derived value of the information value. This is not specifically limited in this specification.

  For example, the above MAC address information may be the lower 6 bytes of the first AMR information, that is, the first AMR includes the first MAC address information, and the first AMR information is determined by the AMR. It may be expressed concretely, and others are the same.

  102. The first node has a first AMR lower than the second AMR, the first MAC address information is the same as the second MAC address information, and the master rank MR of the first node is the first AMR Is higher, the anchor master information of the first node is updated according to the first anchor master information.

  It should be noted that the anchor master information of the first node is the anchor master information stored or recorded in the first node. The first anchor master information further includes a first HC and a first AMBTT, and the anchor master information of the first node further includes a second HC, a second AMBTT, and a first TSF information. .

The following conditions, AMR1 <AMR2, MAC1 = MAC2 , and if AMR1 <MR _{first node} is satisfied, the first node updates the anchor master information of the first node, i.e.,
Set the second AMR to the MR of the first node,
Set the second HC to 0,
Set the second AMBTT to 0.

  In addition, when the MAC address information is compared, specifically, the lower 6 bytes of the first AMR are compared with the lower 6 bytes of the second AMR. There is no order between AMR comparison, MAC address information comparison, and MR and AMR comparison.

  103. The first node determines whether the preset node status of the first node is in a synchronized state.

  It should be noted that the preset node status is a predefined usage state or a usage state defined in the standard. The preset node status may be a node status defined on the network side according to a preset rule, or may be a state set by the node itself. This is not specifically limited. The preset node status is the state of the first node before the first Sync Beacon frame is received, the state of the first node when the current discovery window DW starts, the first in the previous DW (But not limited to these three node statuses if the purpose of limiting the amount of Sync Beacon frames or delaying the transmission of Sync Beacon frames can be achieved). Specifically, the preset node status includes a synchronous state and an asynchronous state. If the node is in Master role, the node is in sync, if the node is in Non-Master-Sync, if the node is in sync, or if the node is in Non-Master-Non-Sync, the node is asynchronous Is in a state.

  That is, even if the current node status of the first node is switched to the synchronized state, whether the preset node status is in the synchronized state, i.e., the node is in the Master role or the Non-Master Sync state It is still required to determine whether

  The preset node status may be stored in the first node and used to compare the node status.

104-1. The first node transmits a second synchronization beacon frame if the preset node status of the first node is in synchronization, or
104-2. The first node does not transmit a synchronous beacon frame when the preset node status of the first node is asynchronous.

  It should be noted that if the first node sends a Sync Beacon, the Sync Beacon carries the updated anchor master information of the first node.

  That is, even if the current node status of the first node is different from the preset node status, the preset status of the first node is in sync with the first node according to the preset rules. If so, send a Sync Beacon frame. The transmission of the Sync Beacon frame by the first node here indicates that the first node can transmit the Sync Beacon frame, and the point in time of transmitting the Sync Beacon frame is at any time, e.g. the current discovery window Or it may be the next discovery window.

  Instead, if the preset node status of the first node is asynchronous, the first node sends a Sync Beacon frame even if the current node status of the first node is synchronous do not do.

  For example, if the preset node status of the first node is the state of the first node before the first Sync Beacon frame is received, the state before the first Sync Beacon frame is received When the state of the first node is the Master state, the first node transmits a second Sync Beacon frame.

  In another example, if the preset node status of the first node is the state of the first node before the first Sync Beacon frame is received, the first Sync Beacon frame is received. If the state of the first node before the transfer is the Non-Master Non-Sync state, this node does not transmit the second Sync Beacon frame.

  In this embodiment of the present invention, the first node updates the anchor master information of the first node according to the first anchor master information, the anchor master information of the first node, and the MR of the first node. And sends a second Sync Beacon frame only when the first node's preset node status is in sync, so that another node is synchronized with the first node The This prevents the node becoming the AM from sending Sync Beacon frames to some extent, and effectively reduces the amount of Sync Beacon frames, occupancy, and waste of air interface resources.

  Furthermore, in this embodiment of the present invention, for example, a node synchronization state may be set, and the preset node status is classified into a first synchronization state Sync1 and a second synchronization state Sync2. When the first node is in Sync1 (Master state), the first node may randomly select a back-off number of [0, 15]. When the first node is in Sync2 (Non-Master Sync state), the first node may randomly select a backoff number of [0, 31]. The back-off number represents a counter. Therefore, the time for transmitting the Sync Beacon frame by different nodes may be shifted, effectively reducing network congestion, delaying the transmission time, and stacking a large number of Sync Beacon frames in a short time. Details of similarities are not described again in this specification.

  It can be seen that in this embodiment of the present invention, the point in time to transmit the Sync Beacon frame may be further limited (this can be understood as a delayed transmission). For example, the Sync Beacon frame may be sent in the current discovery window or the next discovery window, or may be sent in a later discovery window. This is not specifically limited. The time of transmission is selected flexibly and appropriately, so that contention at the time of transmitting the Sync Beacon frame is reduced to some extent, and the nodes can be synchronized in a timely manner.

  Optionally, in this embodiment of the invention, the method before the first node transmits the second synchronization beacon frame when the preset node status of the first node is in a synchronized state. Further includes:

  105. The first node determines whether the node status before the preset node status of the first node is in a synchronized state.

If the node status before the preset node status of the first node is in a synchronized state, the first node transmits a second Sync Beacon frame, or the preset node of the first node If the node status before the status is asynchronous, the first node does not send a second Sync Beacon frame in the current DW, but sends a second Sync Beacon frame in the next DW.

  For example, if the preset node status of the first node is the state of the first node before the first Sync Beacon frame is received, the state before the first Sync Beacon frame is received If the state of the first node is the Master state, i.e., the synchronization state, and if the previous node status is the Master state or Non-Master Sync state, i.e., the synchronization state, then the node Send a Beacon frame. However, if the previous node status is Non-Master Non-Sync, ie asynchronous, the node will not send a second Sync Beacon frame within the current discovery window, but will Send 2 Sync Beacon frames.

  In this optional solution, each node records its own node status change. The node status of two consecutive time points of the first node (of course there may be more than two node statuses, more selection time points will have a better effect) is determined according to the new definition. The first node that becomes AM is prevented from transmitting Sync Beacon frames, and the amount of Sync Beacon frames transmitted in the neighbor aware network can be effectively reduced within a certain period of time. This reduces waste of air interface resources and effectively improves the utilization of network resources, thereby providing more opportunities for SDF to use air interface resources and services between nodes Discovery can be performed in a timely manner, effectively improving the use of network resources.

  Optionally, in this embodiment of the invention, after the first node updates the anchor master information of the first node according to the first anchor master information, the method further includes:

106. The first node receives a third synchronization beacon frame transmitted by a third node in the neighbor aware network, where the third synchronization beacon frame carries third anchor master information and The third anchor master information includes the third AMR, and the updated anchor master information of the first node includes the fourth AMR. This method
If the third AMR is lower than the fourth AMR, skip the update of the anchor master information of the first node by the first node, and if the first node is in sync, the first Sending a synchronous beacon frame in the next DW by the node, or if the third AMR is higher than the fourth AMR, the first node updated the first node according to the third anchor master information It further includes updating the anchor master information. Specifically, the first node may update the updated anchor master information of the first node according to the second synchronization beacon frame, i.e.
Set the fourth AMR to the third AMR,
Set the third HC to 1 (ie, add 1 to the value of the second HC)
Set the third AMBTT to the fourth AMBTT.

  In this alternative solution, after the first node updates the anchor master information recorded by the first node, the synchronization state of the node is changed to the first synchronization state Sync1 and the second synchronization state Sync2. It may be further classified. The first node randomly selects a backoff number, and when the backoff number is reached, the first node transmits a second Sync Beacon frame. Thus, while counting the back-off number, the first node updates the anchor master information recorded by the first node and before sending the second Sync Beacon frame. A frame may be received, or a third Sync Beacon frame may be received after transmitting a second Sync Beacon frame. The specific order of time points is not limited in this specification.

  In addition, even if the third AMR is lower than the fourth AMR, the first node does not change the current node status of the first node or the anchor master information of the first node, and another node Does not send a Sync Beacon frame within the current window to allow to synchronize with the first node. This reduces the amount of Sync Beacon frames to some extent and reduces waste of air interface resources. In addition, if the third AMR is equal to the fourth AMR, the first node may ignore the received third Sync Beacon frame without performing any processing.

  Referring to FIG. 2, in the following, another anchor master AM management method in an embodiment of the present invention will be described from the viewpoint of restricting the change of the first node according to the time when the Sync Beacon frame is received. The method includes the following steps.

  201. The first node receives the first synchronization beacon Sync Beacon frame transmitted by the second node in the neighbor aware network within the second half of the current discovery window DW.

  The first Sync Beacon frame carries first anchor master information, the first anchor master information includes the first AMR, and the anchor master information of the first node includes the second AMR.

  The latter period may be any period within the latter period, indicating that the DW expires, but it can be understood that it is not limited to this 1/2 critical point. In certain areas, DW expiration is set according to the actual design of the network rules. For example, the last 2/5 period may be set to indicate that the DW expires. The division of the period to indicate that the DW expires is not limited in this specification.

  202. The first node does not update the current node status of the first node or the anchor master information of the first node if the first AMR is lower than the second AMR.

  In this embodiment of the present invention, if the first node receives the first Sync Beacon frame within the second half of the DW, the first node even if the first AMR is lower than the second AMR. Is defined as not changing the current node status of the first node and the anchor master information of the first node. In this way, the device is prevented from becoming AM when the discovery window ends, a Sync Beacon frame is sent past the window, and a node that can become AM within some special period is a Sync Beacon frame. Is effectively prevented from transmitting. Therefore, the amount of AM within a short time can be reduced, the amount of Sync Beacon frames transmitted can be effectively reduced, and waste of air interface resources is reduced. The

  It should be noted that based on steps 201 and 202, this embodiment may further include steps 203-205.

  203. Determine whether the current node status of the first node is synchronized.

  204. The first node transmits a second synchronization beacon frame in the next DW if the current node status of the first node is synchronized, where the second synchronization beacon frame is Carries the anchor master information of the node.

  205. The first node does not transmit a synchronous beacon frame if the current node status of the first node is asynchronous.

  Further, based on steps 201 and 202, this embodiment may further include steps 206 to 210, thereby replacing steps 203 to 205.

  206. The first node determines whether the current node status of the first node is in a synchronized state.

  207. The first node further determines whether the previous node status of the first node is in a synchronized state if the current node status of the first node is in a synchronized state.

  208. The first node sends a second Sync Beacon frame if the previous node status of the first node is synchronized, where the second Sync Beacon frame is the anchor master information of the first node Transport.

  209. The first node does not send a Sync Beacon frame if the previous node status of the first node is asynchronous, and optionally the first node does not send a Sync Beacon frame in the current DW. Without transmitting, the second Sync Beacon frame is transmitted in the next DW.

  210. The first node does not transmit a Sync Beacon frame if the current node status of the first node is asynchronous.

  In this embodiment, even if the first node is in a synchronized state within the second half of the DW, the second Sync Beacon frame is not transmitted within the second half of the DW, but is transmitted within the next DW. Is defined as Therefore, the time to send the Sync Beacon frame is effectively delayed, and the node whose state is changed to the synchronized state within the second half of the DW is prevented from sending the Sync Beacon frame, which is unnecessary in a short time. Synchronization is reduced.

  Referring to FIG. 3, the following describes another anchor master AM management method in an embodiment of the present invention from the viewpoint of limiting the amount of Sync Beacon frames according to the node status. Each node records changes in its own node status. The method includes the following steps.

  301. Determine whether the node status before the first node is asynchronous.

  302. The first node does not send a Sync Beacon frame within the current discovery window DW if the previous node status of the first node is asynchronous and the current node status of the first node is synchronous .

  Optionally, the method further comprises the following steps:

  303. If the current node status of the first node is in sync and the node status of the first node is in sync within the second half of the current DW, the first node will sync within the current DW Send Beacon frame within next DW without sending Beacon frame.

  In this embodiment, the two consecutive node statuses of the first node (of course, there may be more than two node statuses, more selection points show better effect) are determined according to the new definition This prevents the first node becoming an AM from sending the above Sync Beacon frame, and the amount of Sync Beacon frames sent on the neighbor aware network is effectively reduced within a certain period of time. Can be reduced. This reduces the waste of air interface resources, which provides more opportunities for SDF to use air interface resources and allows service discovery between nodes to be performed in a timely manner. Yes, the use of network resources is effectively improved.

  In addition, the first node transmits a second Sync Beacon frame if the node status before the first node is in a synchronized state.

  For example, if the current node status of the first node is Master state or AM state and the previous node status is Master state or Non-Master Sync state, the node will send a second Sync Beacon frame .

  In another example, the node state of the first node when the current DW starts is considered. When the current DW starts, the state of the first node is the Master state or Non-Master Sync state, the current node status of the first node is the Master state or AM, and the previous node status is the Master state Or if it is in the Non-Master Sync state, the first node transmits the second Sync Beacon frame.

  Referring to FIG. 4, the following describes another anchor master AM management method according to an embodiment of the present invention. The method includes the following steps.

  401. The first node obtains the master rank MR of another node in the neighborhood awareness network.

  The first node may acquire the MR corresponding to the node in the synchronization state from the synchronization beacon Sync Beacon frame transmitted by the node in the synchronization state in the neighbor recognition network, and record the MR.

  402. The first node receives a first synchronization beacon Sync Beacon frame transmitted by a second node in the neighbor aware network.

  The first Sync Beacon frame carries the first anchor master information, the first anchor master information includes the first anchor master rank AMR, and the first AMR is the first MAC address information. And the second anchor master information of the first node includes the second MAC address information.

  403. If the first node has a first AMR that is lower than a preset percentage of MR obtained by the first node and the first MAC address information is the same as the second MAC address information The second anchor master information is not updated.

  The preset percentage may be any value in the range of 70% to 100%.

  For example, the first node records MRs of N nodes in the neighbor recognition network. If the first AMR is lower than the MR of the 70% to 100% node after the first node receives the first Sync Beacon frame, this is the same as the node that sent the first Sync Beacon frame. The MR is lower than most MRs of the nodes in the neighbor aware network, indicating that the node that sent the first Sync Beacon frame may be a fake or a node that attacks the network. Thus, the first node does not need to update the anchor master information or node status of the first node, and unnecessary state changes and synchronization can be reduced.

  In this embodiment of the invention, the MR of another node in the neighbor aware network is obtained in advance. After the Sync Beacon frame is received, the first anchor master information is compared with the second anchor master information. If the first AMR is lower than the pre-set percentage of acquired MR and the first MAC address information is the same as the second MAC address information, this is a Sync Beacon frame in the neighbor aware network Indicates that the AMR of the node corresponding to is lower than most MR of the node. The second anchor master information does not need to be updated according to the first anchor master information, and no Sync Beacon frames need to be transmitted, which reduces the amount of Sync Beacon frames and saves air interface resources Is done.

Referring to FIG. 5, the following describes a node in an embodiment of the present invention. Node 50 is used in the neighborhood aware network. Node 50 is
A transmission module 501 configured to receive a first synchronization beacon frame transmitted by a second node in a neighbor aware network, wherein the first synchronization beacon frame carries first anchor master information The first anchor master information includes the first anchor master rank AMR, the first AMR includes the first medium access control MAC address information, and the anchor master information of the first node is A transmission module 501 including a second AMR, wherein the second AMR includes second MAC address information;
When the first AMR is lower than the second AMR, the first MAC address information is the same as the second MAC address information, and the master rank MR of the first node is higher than the first AMR, A processing module 502 configured to update the anchor master information of the first node according to the first anchor master information;
including.

  The transmission module 501 is further configured to transmit a second synchronization beacon frame when the processing module 502 determines that the preset node status of the first node is in a synchronized state. Optionally, the transmission module 501 may transmit the second synchronization beacon frame within the current discovery window or the next discovery window.

  Instead, the transmission module 501 does not transmit a synchronous beacon frame when the processing module 502 determines that the preset node status of the first node is asynchronous.

  The preset node status of the first node is the state of the first node before the transmission module 502 receives the first synchronization beacon frame, the state of the first node when the current discovery window starts Or the state of the first node in the previous discovery window. For specific application scenarios, reference may be made to step 103 of the embodiment of this specification. Details of similarities will not be explained again.

  In this embodiment of the invention, the processing module 502 updates the anchor master information of the first node according to the first anchor master information, the anchor master information of the first node, and the MR of the first node. The second synchronization beacon frame is transmitted when the preset node status of the first node is in a synchronized state, whereby another node is synchronized with the first node. This prevents the node becoming the AM from transmitting synchronous beacon frames to some extent, effectively reducing the amount of synchronous beacon frames, occupancy, and waste of air interface resources.

Optionally, the processing module 502 in this embodiment of the invention comprises:
Further configured to determine whether the node status prior to the preset node status of the first node is in a synchronized state.

The transmission module 501 transmits the second synchronization beacon frame when the processing module 502 determines that the node status before the preset node status of the first node is in synchronization, or the first module If the processing module 502 determines that the node status before the preset node status of the current node is asynchronous, it skips sending the second synchronous beacon frame within the current discovery window and Is further configured to transmit the second synchronization beacon frame within the discovery window.

Optionally, the transmission module 501 in this embodiment of the invention comprises:
Further configured to receive a third synchronization beacon frame transmitted by a third node in the neighbor aware network, wherein the third synchronization beacon frame carries third anchor master information and a third The anchor master information of the first node includes the third AMR, and the updated anchor master information of the first node includes the fourth AMR.

The processing module 502 skips updating the anchor master information of the first node when the third AMR is lower than the fourth AMR, and if the first node is in a synchronized state, Send a synchronized beacon frame within the discovery window or update the updated anchor master information of the first node according to the third anchor master information if the third AMR is higher than the fourth AMR Further configured.

Referring to FIG. 6, the following describes a node in an embodiment of the present invention. Node 60 is used in the neighborhood aware network. Node 60 is
A transmission module 601 configured to receive a first synchronization beacon frame transmitted by a second node in a neighbor aware network within a second half of the current discovery window, the first synchronization beacon The frame carries first anchor master information, the first anchor master information includes a first anchor master rank AMR, and the anchor master information of the first node includes a second AMR; A transmission module 601,
A processing module 602 configured to skip updating the current node status of the first node and the anchor master information of the first node when the first AMR is lower than the second AMR;
including.

  In this embodiment of the invention, if the first node receives the first synchronization beacon frame within the second half of the discovery window, even if the first AMR is lower than the second AMR, the processing module 602 Is defined as not changing the current node status of the first node or the anchor master information of the first node. With this mechanism, nodes that can become AMs within some special time period can be effectively prevented from sending synchronous beacon frames. The amount of AM within a short time can be reduced, and the amount of synchronous beacon frames to be transmitted can be effectively reduced, which reduces the waste of air interface resources. The

  Optionally, the transmission module 601 and the processing module 602 in this embodiment of the invention may further perform operations in one of the following cases.

  First case:

The processing module 602 in this embodiment of the invention comprises:
Further configured to determine whether the current node status of the first node is in a synchronized state.

The transmission module 601 in this embodiment of the present invention transmits a second synchronized beacon frame within the next discovery window when the processing module determines that the current node status of the first node is synchronized. Or when the processing module 602 determines that the current node status of the first node is asynchronous, further configured to skip sending synchronous beacon frames.

  Second case:

The processing module 602 in this embodiment of the invention comprises:
Determine if the current node status of the first node is synchronized,
It is further configured to further determine whether the previous node status of the first node is in synchronization if the current node status of the first node is in synchronization.

The transmission module 601 in this embodiment of the present invention transmits the second synchronization beacon frame within the next discovery window when the processing module 602 determines that the node status before the first node is in synchronization. Or,
If processing module 602 determines that the node status before the first node is asynchronous, it skips sending a synchronous beacon frame or the current node status of the first node is asynchronous It is further configured to skip transmitting a synchronized beacon frame if the processing module 602 determines that there is.

Referring to FIG. 7, the following describes another node in one embodiment of the present invention. Node 70 is used in the neighborhood aware network. Node 70
A processing module 701 configured to determine whether the node status before the first node is asynchronous; and
A synchronous beacon within the current discovery window when the processing module 701 determines that the previous node status of the first node is asynchronous and the current node status of the first node is synchronous or asynchronous A transmit module 702 configured to skip transmitting frames;
including.

  In this embodiment, the two consecutive node statuses of the first node (of course there may be more than two node statuses, more selection points indicate better effect) are processed by the processing module 701. Determined according to the new definition. The first node that becomes AM is prevented from transmitting the synchronization beacon frame described above, and the amount of synchronization beacon frames transmitted in the neighbor aware network can be effectively reduced within a specific period of time. This reduces the waste of air interface resources, which provides more opportunities for SDF to use air interface resources and allows service discovery between nodes to be performed in a timely manner. Yes, the use of network resources is effectively improved.

Optionally, the transmission module 702 in this embodiment of the invention comprises:
If the processing module 701 determines that the current node status of the first node is synchronized and the node status of the first node is synchronized within the second half of the current discovery window, It is further configured to skip sending a synchronization beacon frame within the discovery window and to send a synchronization beacon frame within the next discovery window.

Referring to FIG. 8, the following describes a node in an embodiment of the present invention. Node 80 is used in the neighborhood aware network. Node 80 is
Obtain the master rank MR of another node in the neighbor aware network,
A transmission module 801 configured to receive a first synchronization beacon frame transmitted by a second node in a neighbor aware network, wherein the first synchronization beacon frame carries first anchor master information The first anchor master information includes the first anchor master rank AMR, the first AMR includes the first medium access control MAC address information, and the second anchor master of the first node. A transmission module 801, wherein the information includes second MAC address information;
If the first AMR acquired by the transmission module 801 is lower than the preset percentage of MR acquired by the transmission module and the first MAC address information is the same as the second MAC address information, A processing module 802 configured to skip updating the two anchor master information;
including.

  In this embodiment of the invention, the transmission module 801 obtains in advance the MR of another node in the neighbor aware network. After the transmission module 801 receives the synchronization beacon frame, the processing module 802 compares the first anchor master information with the second anchor master information. If the first AMR is lower than the pre-set percentage of the acquired MR and the first MAC address information is the same as the second MAC address information, this is a synchronized beacon frame in the neighbor aware network Indicates that the AMR of the node corresponding to is lower than most MR of the node. The second anchor master information does not need to be updated according to the first anchor master information, and the transmission module 801 does not need to transmit a synchronization beacon frame, which reduces the amount of synchronization beacon frames and Interface resources are saved.

  If the transmitting node described in the embodiment corresponding to FIGS. 5 to 8 and the corresponding alternative embodiment receives or obtains some information, the transmitting node may be understood as a receiver, When sending a message, a sending node may be understood as a transmitter. In addition, a processing module may be understood as a processor that performs some or all of the steps in the above embodiments.

  The present invention further provides a computer storage medium. The medium stores a program. When the program is executed, some or all of the steps of the anchor master AM management method described above are executed.

  The present invention further provides a computer storage medium. The medium stores a program. When the program is executed, the above node performs some or all of the steps of the anchor master AM management method.

  FIG. 9 is another schematic configuration diagram of the user node 90 according to an embodiment of the present invention. User node 90 may include at least one network interface or another communication interface, at least one receiver 901, at least one transmitter 902, at least one processor 903, and memory 904. This realizes connection and communication between these devices. Using at least one network interface (which may be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc., and at least one system gateway and A communication connection with another network element may be used.

  Memory 904 may include read only memory and random access memory and provides instructions and data to processor 903. A portion of the memory 904 may further include high-speed random access memory (RAM), or may include non-volatile memory.

Memory 904 includes the following elements, executable modules or data structures, or subsets thereof, or extensions thereof:
An operation instruction including various operation instructions used to realize various operations;
Stores an operating system that includes various system programs that are used to implement various basic services and to handle hardware-based tasks.

In this embodiment of the invention, the processor 903 invokes an operation instruction stored in the memory 904 (the operation instruction may be stored in the operating system) to perform the following operations:
The operation of receiving the first synchronization beacon frame transmitted by the second node in the neighbor recognition network using the receiver 901, and the first synchronization beacon frame carries the first anchor master information. The first anchor master information includes the first anchor master rank AMR, the first AMR includes the first medium access control MAC address information, and the anchor master information of the first node is An operation including a second AMR, the second AMR including second MAC address information;
When the first AMR is lower than the second AMR, the first MAC address information is the same as the second MAC address information, and the master rank MR of the first node is higher than the first AMR, An operation of updating the anchor master information of the first node according to the first anchor master information by the first node;
The operation of transmitting the second synchronous beacon frame using the transmitter 902 when the preset node status of the first node is in a synchronized state, or the preset node status of the first node is asynchronous An operation to skip sending a synchronous beacon frame when in a state;
Execute.

  The preset node status of the first node is the state of the first node before the first synchronization beacon frame is received, the state of the first node when the current discovery window starts, or before Contains the state of the first node in the discovery window.

  Optionally, the processor 903 uses the transmitter 902 to transmit a second synchronization beacon frame within the current discovery window or the next discovery window.

In some implementations, before the first node transmits the second synchronization beacon frame, the processor 903 performs the following steps:
Determining whether the node status prior to the preset node status of the first node is in synchronization;
Transmitting a second synchronization beacon frame using the first node when the node status before the preset node status of the first node is in a synchronized state, or presetting the first node Skips sending the second synchronous beacon frame in the current discovery window using the transmitter 902 and the second discovery window in the next discovery window when the previous node status is asynchronous. Sending two synchronous beacon frames;
May be further executed.

In some implementations, after the first node updates the anchor master information of the first node according to the first anchor master information, the processor 903 performs the following steps:
Receiving a third synchronization beacon frame transmitted by a third node in the neighbor aware network using a receiver 901, wherein the third synchronization beacon frame carries third anchor master information; The third anchor master information includes a third AMR, and the updated anchor master information of the first node includes a fourth AMR; and
If the third AMR is lower than the fourth AMR, skip updating the anchor master information of the first node, and if the first node is in sync, then use the transmitter 902 to Sending a synchronized beacon frame within the discovery window of the first node, or updating the updated anchor master information of the first node according to the third anchor master information if the third AMR is higher than the fourth AMR Steps,
May be further executed.

  FIG. 10 is another schematic configuration diagram of the user node 100 according to an embodiment of the present invention. User node 100 may include at least one network interface or another communication interface, at least one receiver 1001, at least one transmitter 1002, at least one processor 1003, and memory 1004. This realizes connection and communication between these devices. Using at least one network interface (which may be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc., and at least one system gateway and A communication connection with another network element may be used.

  Memory 1004 may include read only memory and random access memory and provides instructions and data to processor 1003. A part of the memory 1004 may further include a high-speed random access memory (RAM), or may include a non-volatile memory.

Memory 1004 includes the following elements, executable modules or data structures, or subsets thereof, or extensions thereof:
An operation instruction including various operation instructions used to realize various operations;
An operating system is stored that implements various basic services and includes various system programs used to process hardware-based tasks.

In this embodiment of the invention, the processor 1003 performs the following operations by calling an operation instruction stored in the memory 1004 (the operation instruction may be stored in the operating system):
An operation of receiving a first synchronization beacon frame transmitted by a second node in a neighbor aware network using a receiver 1001 within a second half of a current discovery window, the first synchronization beacon frame Carries the first anchor master information, the first anchor master information includes the first AMR, and the anchor master information of the first node includes the second AMR; and
An operation of skipping updating the current node status of the first node and the anchor master information of the first node when the first AMR is lower than the second AMR;
Execute.

In some implementations, the processor 1003 performs the following steps,
Determining whether the current node status of the first node is synchronized;
Sending a second synchronization beacon frame within the next discovery window using transmitter 1002 if the current node status of the first node is in sync, or the current node status of the first node Skipping sending synchronous beacon frames when is in an asynchronous state;
May be further executed.

In some implementations, the processor 1003 performs the following steps,
Determining whether the current node status of the first node is synchronized;
Further determining whether the previous node status of the first node is in a synchronized state if the current node status of the first node is in a synchronized state;
Sending the second synchronization beacon frame within the next discovery window using transmitter 902 if the node status before the first node is in sync; or the node status before the first node Skipping sending a synchronous beacon frame if the node is in an asynchronous state, or skipping sending a synchronous beacon frame if the current node status of the first node is asynchronous ,
May be further executed.

  FIG. 11 is another schematic configuration diagram of the user node 110 according to an embodiment of the present invention. User node 110 may include at least one network interface or another communication interface, at least one receiver 1101, at least one transmitter 1102, at least one processor 1103, and memory 1104. This realizes connection and communication between these devices. Using at least one network interface (which may be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc., and at least one system gateway and A communication connection with another network element may be used.

  Memory 1104 may include read only memory and random access memory and provides instructions and data to processor 1103. A portion of the memory 1104 may further include high-speed random access memory (RAM), or may include non-volatile memory.

Memory 1104 includes the following elements, executable modules or data structures, or subsets thereof, or extensions thereof:
An operation instruction including various operation instructions used to realize various operations;
An operating system is stored that implements various basic services and includes various system programs used to process hardware-based tasks.

In this embodiment of the invention, the processor 1103 performs the following operations by invoking operational instructions stored in the memory 1104 (the operational instructions may be stored in the operating system):
An operation to determine whether the node status before the first node is asynchronous;
If the previous node status of the first node is asynchronous and the current node status of the first node is synchronous or asynchronous, a synchronous beacon frame is used in the current discovery window using the transmitter 1102 And the action to skip sending
Execute.

In some implementations, the processor 1103 performs the following steps,
A sync beacon frame in the current discovery window when the current node status of the first node is in sync and the node status of the first node is in sync during the second half of the current discovery window The step of transmitting a synchronization beacon frame within the next discovery window using the transmitter 1102 may be further performed.

  FIG. 12 is another schematic configuration diagram of the user node 120 according to an embodiment of the present invention. User node 120 may include at least one network interface or another communication interface, at least one receiver 1201, at least one transmitter 1202, at least one processor 1203, and memory 1204. This realizes connection and communication between these devices. Using at least one network interface (which may be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc., and at least one system gateway and A communication connection with another network element may be used.

  Memory 1204 may include read only memory and random access memory and provides instructions and data to processor 1203. A part of the memory 1204 may further include a high-speed random access memory (RAM), or may include a non-volatile memory.

Memory 1204 includes the following elements, executable modules or data structures, or subsets thereof, or extensions thereof:
An operation instruction including various operation instructions used to realize various operations;
Stores an operating system that includes various system programs that are used to implement various basic services and to handle hardware-based tasks.

In this embodiment of the invention, the processor 1203 performs the following operations by invoking an operation instruction stored in the memory 1204 (the operation instruction may be stored in the operating system):
Using the receiver 1201 to obtain the master rank MR of another node in the neighbor aware network;
An operation for receiving a first synchronization beacon frame transmitted by a second node in a neighbor-aware network using a receiver 1201, and the first synchronization beacon frame carries first anchor master information. The first anchor master information includes the first anchor master rank AMR, the first AMR includes the first medium access control MAC address information, and the second anchor master of the first node. An operation wherein the information includes second MAC address information; and
If the first AMR is lower than the preset percentage of MR obtained by the first node and the first MAC address information is the same as the second MAC address information, the second anchor master An action to skip updating the information,
Execute.

  In the above embodiments, the description of each embodiment has its own focus. For parts not described in detail in one embodiment, reference may be made to related descriptions in other embodiments.

  For the purpose of simplicity and simplicity, the detailed operating processes of the above systems, devices, and units can be referred to the corresponding processes in the above method embodiments, where It will be clearly understood by those skilled in the art that details will not be described again.

  It should be understood that in some embodiments provided in the present application, the disclosed systems, devices, and methods may be implemented in other forms. For example, the described apparatus embodiment is merely an example. For example, the unit division is merely a logical function division, and may be another division in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not performed. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be implemented using several interfaces. Indirect coupling or communication connections between devices or units may be realized electronically, mechanically, or in another form.

  A unit described as a separate part may or may not be physically separated, and a part displayed as a unit may or may not be a physical unit. It may be located at a location or distributed across multiple network units. Some or all of the units may be selected according to actual requirements to achieve the objectives of the solutions of the embodiments.

  In addition, the functional units in embodiments of the present invention may be integrated into one processing unit, or each of the units may physically exist alone, or two or more units may be Integrated into one unit. The integrated unit may be realized in the form of hardware or may be realized in the form of a software functional unit.

  If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, the integrated unit may be stored on a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, or a part that contributes to the prior art, or all or some of the technical solutions may be realized in the form of a software product. The software product is stored in a storage medium and causes a computer node (which may be a personal computer, server, or network node) to perform all or some of the method steps described in the embodiments of the present invention. Contains several instructions for commanding. The above storage media can be a USB flash drive, removable hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk Including any medium capable of storing program code.

  The anchor master AM management method and node provided in the present invention are described in detail above. Specific examples are used herein to illustrate the principles and implementations of the present invention. The descriptions of the embodiments are provided merely to assist in understanding the method and core ideas of the present invention. In addition, those skilled in the art can make changes and modifications to the present invention from the viewpoint of specific implementation and application scope in accordance with the spirit of the present invention. In conclusion, the contents of this specification should not be construed as a limitation of the present invention.

50 nodes
60 nodes
70 nodes
80 nodes
90 user nodes
100 user nodes
110 user nodes
120 user nodes
501 Transmitter module
502 processing module
601 transmission module
602 processing module
701 processing module
702 Transmitter module
801 transmission module
802 processing module
901 receiver
902 transmitter
903 processor
904 memory
1001 receiver
1002 transmitter
1003 processor
1004 memory
1101 receiver
1102 Transmitter
1103 processor
1104 memory
1201 receiver
1202 transmitter
1203 processor
1204 memory

Currently, social and localization have become mainstream modes in the mobile Internet field. In particular, along with the proliferation of mobile nodes with wireless-fidelity (Wi-Fi) interfaces, in Wi-Fi technology, beacon frames are periodically transmitted using the central node, External nodes can be associated with the central node. However, there are limitations to the network structure and data transmission in the 802.11 protocol. For example, if there is no central node, it is difficult to perform service discovery . Currently, Neighbor Awareness Networking (NAN) mechanisms are commonly used to solve this problem, whereby multiple NAN nodes form a NAN cluster. Nodes in the same NAN cluster have the same cluster identifier, and each node has its own attributes including role and state. There are two roles: master node (Master) and non-master node (non-Master). There are two states, synchronous (sync) and asynchronous (non-sync). Nodes in Sync state are responsible for maintaining cluster synchronization. Master is in Sync state and non-Master can be in Sync state or non-sync state. Each node further includes a Master Rank (MR), the Master with the highest MR in the NAN cluster becomes the Anchor Master (AM), and all other nodes are in time with the AM Keeping synchronized, this ensures synchronization of the entire NAN cluster. In a NAN cluster, a typical application scenario is that multiple nodes perform mutual service discovery before association. In order to perform service discovery between nodes, the nodes in the NAN cluster must operate via the NAN social channel and remain awake for a specified period of time. For example, the social channel of the 2.4 GHz channel is channel 6. In some scenarios, the NAN needs to run in the background for a long time. Therefore, energy saving control needs to be performed in the nodes in the NAN, and it is specified that the node wakes up only when a discovery window (DW) arrives, which enables service discovery and cluster synchronization on the social channel Execute.

In the prior art, nodes need to be synchronized frequently to ensure that there is no significant deviation between the two system clocks, ie, each Master and each Sync non-Master is synchronized within the DW. Send a Beacon frame. According to existing rules, when a node in the cluster receives an AM Sync Beacon frame, the Anchor Master Rank (AMR) in the Sync Beacon frame is recorded by the majority of the nodes in the cluster. has been lower than the MR of AMR and that node, Sync Beacon medium access control in the frame (medium access control, MAC) address information, if the same as the MAC address information of AM recorded by the node, the Most of the nodes can change their role to become AM in a short time. As a result, a large amount of Sync Beacon frames need to be transmitted in a short time, and excessive air interface resources are consumed.

A third aspect of the present invention provides an anchor master AM management method, which is used in a neighbor aware network,
Determining by the first node whether the previous node status of the first node is asynchronous;
If the previous node status of the first node is asynchronous and the current node status of the first node is synchronous or asynchronous, the first node sends a synchronous beacon frame within the current discovery window. A step of skipping sending,
including.

A ninth aspect of the present invention provides a node, which is used in a neighbor aware network,
A processor;
Memory configured to store computer executable program code;
A communication interface;
Including receiver and transmitter,
A processor, a receiver, a transmitter, a memory, and a communication interface communicate with each other using a bus;
When the processor reads the program code and data stored in the memory , the program code includes an instruction, and the processor executes the instruction, the instruction performs the following operations:
An operation of using a receiver to receive a first synchronization beacon frame transmitted by a second node in a neighbor aware network, wherein the first synchronization beacon frame carries first anchor master information. The first anchor master information includes the first anchor master rank AMR, the first AMR includes the first medium access control MAC address information, and the anchor master information of the first node is the first An operation that includes two AMRs, wherein the second AMR includes second MAC address information;
When the first AMR is lower than the second AMR, the first MAC address information is the same as the second MAC address information, and the master rank MR of the first node is higher than the first AMR, Updating the anchor master information of the first node according to the first anchor master information;
The operation of transmitting the second synchronous beacon frame using the transmitter when the preset node status of the first node is in a synchronized state, or the preset node status of the first node is in an asynchronous state The operation of skipping sending synchronous beacon frames, and
Makes it possible to execute

A tenth aspect of the present invention provides a node, which is used in a neighbor aware network,
A processor;
Memory configured to store computer executable program code;
A communication interface;
Including receiver and transmitter,
A processor, a receiver, a transmitter, a memory, and a communication interface communicate with each other using a bus;
When the processor reads the program code and data stored in the memory , the program code includes an instruction, and the processor executes the instruction, the instruction performs the following operations:
An operation of receiving a first synchronization beacon frame transmitted by a second node in a neighbor aware network within a second half of the current discovery window, wherein the first synchronization beacon frame is a first synchronization beacon frame Carrying the anchor master information, the first anchor master information includes the first AMR, and the anchor master information of the first node includes the second AMR; and
If the first AMR is lower than the second AMR, it is possible to perform an operation that skips updating the current node status of the first node and the anchor master information of the first node. .

An eleventh aspect of the present invention provides a node, which is used in a neighbor aware network,
A processor;
Memory configured to store computer executable program code;
A communication interface;
Including receiver and transmitter,
A processor, a receiver, a transmitter, a memory, and a communication interface communicate with each other using a bus;
When the processor reads the program code and data stored in the memory , the program code includes an instruction, and the processor executes the instruction, the instruction performs the following operations:
An operation to determine whether the node status before the first node is asynchronous;
Skip sending synchronous beacon frames within the current discovery window when the previous node status of the first node is asynchronous and the current node status of the first node is synchronous or asynchronous And the action to
Make it possible to
Provides a node.

A twelfth aspect of the present invention provides a node, which is used in a neighbor aware network,
A processor;
Memory configured to store computer executable program code;
A communication interface;
Including receiver and transmitter,
A processor, a receiver, a transmitter, a memory, and a communication interface communicate with each other using a bus;
When the processor reads the program code and data stored in the memory , the program code includes an instruction, and the processor executes the instruction, the instruction performs the following operations:
Obtaining the master rank MR of another node in the neighbor aware network;
An operation of receiving a first synchronization beacon frame transmitted by a second node in a neighbor aware network, wherein the first synchronization beacon frame carries first anchor master information and the first anchor master The information includes the first anchor master rank AMR, the first AMR includes the first medium access control MAC address information, and the second anchor master information of the first node is the second MAC. Actions, including address information,
If the first AMR is lower than the preset percentage of MR obtained by the first node and the first MAC address information is the same as the second MAC address information, the second anchor master An action to skip updating the information,
Makes it possible to execute

In practical applications, the message can be conveyed to the first anchor master information, messages in the Sync Beacon frame, be another message service discovery frame (Service Discovery Frame, SDF) in a message or NAN, Or, of course, a newly expanded or newly defined message. A specific conveying method is not limited in this specification.

In addition, the Sync Beacon frame includes at least one of AMR information, hop count HC information, anchor master beacon transmission time (Anchor Master Beacon Transmission Time, AMBTT) information, and time synchronization function (Time Synchronization Function, TSF) information. May include one. AM information, AMR information, or MAC address information may be the corresponding information value, or may be in another form of representation, or a derivative of these information values or these combined with other information It may be a derived value of the information value. This is not specifically limited in this specification.

If the first node transmits a Sync Beacon frame, Sync Beacon frame is to be noted that conveys the updated anchor master information of the first node.

The preset node status of the first node is the state of the first node before the transmission module 50 1 receives the first synchronization beacon frame, the first node's state when the current discovery window starts. Contains the state, or the state of the first node in the previous discovery window. For specific application scenarios, reference may be made to step 103 of the embodiment of this specification. Details of similarities will not be explained again.

Referring to FIG. 6, the following describes another node in one embodiment of the present invention. Node 60 is used in the neighborhood aware network. Node 60 is
A transmission module 601 configured to receive a first synchronization beacon frame transmitted by a second node in a neighbor aware network within a second half of the current discovery window, the first synchronization beacon The frame carries first anchor master information, the first anchor master information includes a first anchor master rank AMR, and the anchor master information of the first node includes a second AMR; A transmission module 601,
A processing module 602 configured to skip updating the current node status of the first node and the anchor master information of the first node when the first AMR is lower than the second AMR;
including.

Referring to FIG. 8, the following describes another node in one embodiment of the present invention. Node 80 is used in the neighborhood aware network. Node 80 is
Obtain the master rank MR of another node in the neighbor aware network,
A transmission module 801 configured to receive a first synchronization beacon frame transmitted by a second node in a neighbor aware network, wherein the first synchronization beacon frame carries first anchor master information The first anchor master information includes the first anchor master rank AMR, the first AMR includes the first medium access control MAC address information, and the second anchor master of the first node. A transmission module 801, wherein the information includes second MAC address information;
If the first AMR acquired by the transmission module 801 is lower than the preset percentage of MR acquired by the transmission module and the first MAC address information is the same as the second MAC address information, A processing module 802 configured to skip updating the two anchor master information;
including.

In some implementations, before the first node transmits the second synchronization beacon frame, the processor 903 performs the following steps:
Determining whether the node status prior to the preset node status of the first node is in synchronization;
Transmitting the second synchronization beacon frame using the transmitter 902 if the node status before the preset node status of the first node is in a synchronized state, or preset of the first node Skips sending the second synchronous beacon frame in the current discovery window using the transmitter 902 and the second in the next discovery window when the node status before the previous node status is asynchronous. Sending a synchronous beacon frame of
May be further executed.

In some implementations, the processor 1003 performs the following steps,
Determining whether the current node status of the first node is synchronized;
Further determining whether the previous node status of the first node is in a synchronized state if the current node status of the first node is in a synchronized state;
If previous node status of the first node is a synchronous state, the step using a transmitter 10 02 and transmits a second synchronization beacon frame in the next discovery window or previous node of the first node, Skipping sending synchronous beacon frames when the status is asynchronous, or skipping sending synchronous beacon frames when the current node status of the first node is asynchronous When,
May be further executed.

Claims (33)

An anchor master (AM) node management method, wherein the method is used in a neighbor aware network,
Receiving, by a first node, a first synchronization beacon frame transmitted by a second node in the neighbor aware network, wherein the first synchronization beacon frame includes first anchor master information; The first anchor master information includes a first anchor master rank (AMR), the first AMR includes first medium access control (MAC) address information, and The node's anchor master information includes a second AMR, and the second AMR includes second MAC address information; and
The first AMR is lower than the second AMR, the first MAC address information is the same as the second MAC address information, and the master rank (MR) of the first node is the first Updating the anchor master information of the first node according to the first anchor master information by the first node when higher than the AMR of
Transmitting a second synchronization beacon frame by the first node when the preset node status of the first node is in a synchronized state; or the preset node status of the first node Skipping sending a synchronous beacon frame by the first node when is in an asynchronous state;
An anchor master (AM) node management method including: Before the step of transmitting a second synchronization beacon frame by the first node when the preset node status of the first node is in a synchronized state, the method comprises:
Determining by the first node whether a node status prior to a preset node status of the first node is in synchronization;
Transmitting the second synchronization beacon frame by the first node when the node status before the preset node status of the first node is in a synchronized state, or of the first node Skips sending the second synchronous beacon frame within the current discovery window by the first node when the node status before the preset node status is asynchronous, and the next discovery window Transmitting the second synchronization beacon frame within:
The method of claim 1, further comprising: The preset node status of the first node is the state of the first node before the first synchronization beacon frame is received, of the first node when the current discovery window starts. Including the state, or the state of the first node in the previous discovery window,
The method according to claim 1 or 2. The step of transmitting a second synchronization beacon frame by the first node;
The method according to claim 1 or 3, comprising: transmitting the second synchronization beacon frame by the first node in a current discovery window or a next discovery window. After the step of updating the anchor master information of the first node according to the first anchor master information by the first node, the method comprises:
Receiving a third synchronization beacon frame transmitted by a third node in the neighbor aware network by the first node, wherein the third synchronization beacon frame includes third anchor master information. The third anchor master information includes a third AMR, and the updated anchor master information of the first node includes a fourth AMR; and
If the third AMR is lower than the fourth AMR, the first node skips updating the anchor master information of the first node by the first node, and the first node is in a synchronized state If the first node transmits a synchronous beacon frame within the next discovery window, or if the third AMR is higher than the fourth AMR, the first node Updating the updated anchor master information of the first node according to the anchor master information of 3;
5. The method according to any one of claims 1 to 4, further comprising: An anchor master (AM) management method, wherein the method is used in a neighbor aware network,
Receiving a first synchronization beacon frame transmitted by a second node in the neighbor aware network within a second half of the current discovery window by the first node, the first synchronization A beacon frame carries first anchor master information, the first anchor master information includes a first AMR, and the anchor master information of the first node includes a second AMR; and ,
Skip updating the current node status of the first node and the anchor master information of the first node by the first node when the first AMR is lower than the second AMR Steps,
Anchor master (AM) management method including The method comprises
Determining by the first node whether a current node status of the first node is in a synchronized state;
Transmitting a second synchronization beacon frame by the first node within a next discovery window if the current node status of the first node is in synchronization; or Skipping sending a synchronous beacon frame by the first node when the node status is asynchronous;
The method of claim 6, further comprising: The method comprises
Determining by the first node whether a current node status of the first node is in a synchronized state;
When the current node status of the first node is in a synchronized state, the first node determines whether the previous node status of the first node is in a synchronized state;
Transmitting the second synchronization beacon frame within the next discovery window by the first node, if the node status before the first node is in synchronization, or before the first node Skipping sending a synchronous beacon frame by the first node if the node status of the first node is asynchronous, or if the current node status of the first node is asynchronous Skipping sending synchronous beacon frames by one node;
The method of claim 6, further comprising: An anchor master (AM) management method, wherein the method is used in a neighbor aware network,
Determining, by a first node, whether the previous node status of the first node is asynchronous;
Synchronized within the current discovery window by the first node when the previous node status of the first node is asynchronous and the current node status of the first node is synchronous or asynchronous Skipping sending beacon frames; and
Anchor master (AM) management method including The method comprises
If the current node status of the first node is in a synchronized state and the node status of the first node is in a synchronized state within the second half of the current discovery window, the first node The method of claim 9, further comprising: skipping sending a synchronization beacon frame within a current discovery window and transmitting the synchronization beacon frame within a next discovery window. An anchor master (AM) management method, wherein the method is used in a neighbor aware network,
Obtaining a master rank (MR) of another node in the neighbor aware network by a first node;
Receiving, by the first node, a first synchronization beacon frame transmitted by a second node in the neighbor aware network, wherein the first synchronization beacon frame is first anchor master information The first anchor master information includes a first anchor master rank (AMR), the first AMR includes first medium access control (MAC) address information, and The second anchor master information of one node includes second MAC address information; and
If the first AMR is lower than a preset percentage of MR acquired by the first node and the first MAC address information is the same as the second MAC address information, the Skipping updating the second anchor master information by a first node;
Anchor master (AM) management method including A node that is used in a neighbor aware network;
A transmission module configured to receive a first synchronization beacon frame transmitted by a second node in the neighbor aware network, wherein the first synchronization beacon frame includes first anchor master information; The first anchor master information includes a first anchor master rank (AMR), the first AMR includes first medium access control (MAC) address information, and A transmission module in which the anchor master information of the node includes a second AMR, and the second AMR includes second MAC address information;
The first AMR is lower than the second AMR, the first MAC address information is the same as the second MAC address information, and the master rank (MR) of the first node is the first A processing module configured to update the anchor master information of the first node according to the first anchor master information when higher than
Including
The transmission module is further configured to transmit a second synchronization beacon frame if the processing module determines that a preset node status of the first node is in synchronization; or The transmission module is further configured to skip transmitting a synchronous beacon frame if the processing module determines that the preset node status of the first node is asynchronous.
node. The processing module is
Further configured to determine whether a node status prior to the preset node status of the first node is in a synchronized state;
The transmission module transmits the second synchronization beacon frame when the processing module determines that the node status prior to the preset node status of the first node is in synchronization; or Transmitting the second synchronous beacon frame within a current discovery window when the processing module determines that the node status prior to the preset node status of the first node is asynchronous. Further configured to skip and transmit the second synchronization beacon frame within a next discovery window;
The node according to claim 12.   The preset node status of the first node is the state of the first node before the first synchronization beacon frame is received by the transmission module, the first time when the current discovery window starts. 14. A node according to claim 12 or 13, comprising the state of one node or the state of the first node in a previous discovery window. Specifically, the transmission module is
15. A node according to claim 12 or 14, configured to transmit the second synchronization beacon frame within a current discovery window or a next discovery window. The transmission module is
Further configured to receive a third synchronization beacon frame transmitted by a third node in the neighbor aware network, wherein the third synchronization beacon frame carries third anchor master information, and 3 anchor master information includes a third AMR, and the updated anchor master information of the first node includes a fourth AMR;
If the processing module skips updating the anchor master information of the first node when the third AMR is lower than the fourth AMR, and the first node is in a synchronized state For example, the third anchor is further configured to transmit a synchronous beacon frame within a next discovery window, or when the processing module is higher than the fourth AMR. Further configured to update updated anchor master information of the first node according to master information;
The node according to any one of claims 12 to 15. A node that is used in a neighbor aware network;
A transmission module configured to receive a first synchronization beacon frame transmitted by a second node in the neighbor aware network within a second half of a current discovery window, the first synchronization beacon frame A beacon frame carries first anchor master information, the first anchor master information includes a first anchor master rank (AMR), and the anchor master information of the first node is a second Sending module, including AMR,
A process configured to skip updating the current node status of the first node and the anchor master information of the first node when the first AMR is lower than the second AMR. A node containing modules and. The processing module is
Further configured to determine whether the current node status of the first node is in a synchronized state;
The transmission module transmits a second synchronization beacon frame within a next discovery window if the processing module determines that the current node status of the first node is in synchronization; or Further configured to skip sending a synchronous beacon frame if the processing module determines that the current node status of the one node is out of sync;
The node according to claim 17. The processing module is
Determining whether the current node status of the first node is in a synchronized state;
Further configured to further determine whether the previous node status of the first node is in a synchronized state if the current node status of the first node is in a synchronized state;
The transmission module transmits the second synchronization beacon frame within a next discovery window if the processing module determines that the node status prior to the first node is in synchronization; or Skips sending a synchronous beacon frame when the processing module determines that the previous node status of the first node is asynchronous, or the current node status of the first node is asynchronous Is further configured to skip sending a synchronous beacon frame if the processing module determines that
The node according to claim 17. A node that is used in a neighbor aware network;
A processing module configured to determine whether the node status before the first node is asynchronous; and
Within the current discovery window when the processing module determines that the previous node status of the first node is asynchronous and the current node status of the first node is synchronous or asynchronous A transmission module configured to skip transmitting synchronous beacon frames. The transmission module is
When the processing module determines that the current node status of the first node is in a synchronized state and the node status of the first node is in a synchronized state within a second half of the current discovery window 21. The node of claim 20, further configured to skip transmitting a synchronization beacon frame within the current discovery window and transmit the synchronization beacon frame within a next discovery window. A node that is used in a neighbor aware network;
Obtaining the master rank (MR) of another node in the neighbor aware network;
A transmission module configured to receive a first synchronization beacon frame transmitted by a second node in the neighbor aware network, wherein the first synchronization beacon frame includes first anchor master information; The first anchor master information includes a first anchor master rank (AMR), the first AMR includes first medium access control (MAC) address information, and A sending module, wherein the second anchor master information of the node includes second MAC address information; and
When the first AMR acquired by the transmission module is lower than a preset percentage of MR acquired by the transmission module, and the first MAC address information is the same as the second MAC address information A processing module configured to skip updating the second anchor master information;
A node that contains A node that is used in a neighbor aware network;
A processor;
Memory configured to store computer executable program code;
A communication interface;
A receiver and a transmitter,
Including
The processor, the receiver, the transmitter, the storage device, and the communication interface communicate with each other using a bus;
The processor reads program code and data stored in the storage device, the program code includes an instruction, and when the processor executes the instruction, the instruction executes the following operation:
An operation of receiving, using the receiver, a first synchronization beacon frame transmitted by a second node in the neighbor awareness network, wherein the first synchronization beacon frame includes first anchor master information. The first anchor master information includes a first anchor master rank (AMR), the first AMR includes first medium access control (MAC) address information, and The node's anchor master information includes a second AMR, and the second AMR includes second MAC address information; and
The first AMR is lower than the second AMR, the first MAC address information is the same as the second MAC address information, and the master rank (MR) of the first node is the first An operation of updating the anchor master information of the first node according to the first anchor master information,
An operation of transmitting a second synchronization beacon frame using the transmitter when the preset node status of the first node is in a synchronized state, or the preset node status of the first node An operation that skips sending synchronous beacon frames when
Make it possible to
node. Before the operation of transmitting a second synchronization beacon frame using the transmitter when the preset node status of the first node is in a synchronized state, the processor performs the following operations:
Determining whether the node status before the preset node status of the first node is in a synchronized state;
An operation of transmitting the second synchronization beacon frame using the transmitter when a node status before a preset node status of the first node is in a synchronized state, or of the first node Skips sending the second synchronous beacon frame within the current discovery window using the transmitter when the node status before the preset node status is asynchronous, and the next discovery window Transmitting the second synchronous beacon frame within,
24. The node of claim 23, further executing: The preset node status of the first node is the state of the first node before the first synchronization beacon frame is received, of the first node when the current discovery window starts. Including the state, or the state of the first node in the previous discovery window,
The node according to claim 23 or 24. The operation of transmitting a second synchronous beacon frame by the processor using the transmitter;
26. The node according to claim 23 or 25, comprising: using the transmitter to transmit the second synchronization beacon frame within a current discovery window or a next discovery window. After the operation of updating the anchor master information of the first node according to the first anchor master information, the processor
An operation of receiving, using the receiver, a third synchronization beacon frame transmitted by a third node in the neighbor awareness network, wherein the third synchronization beacon frame includes third anchor master information. The third anchor master information includes a third AMR, and the updated anchor master information of the first node includes a fourth AMR; and
If the third AMR is lower than the fourth AMR, skip the updating of the anchor master information of the first node, and if the first node is in a synchronized state, the transmitter An operation of transmitting a synchronous beacon frame within the next discovery window using the update of the first node according to the third anchor master information when the third AMR is higher than the fourth AMR An operation to update the anchor master information,
The node according to any one of claims 23 to 26, further executing: A node that is used in a neighbor aware network;
A processor;
Memory configured to store computer executable program code;
A communication interface;
Including receiver and transmitter,
The processor, the receiver, the transmitter, the storage device, and the communication interface communicate with each other using a bus;
The processor reads program code and data stored in the storage device, the program code includes an instruction, and when the processor executes the instruction, the instruction executes the following operation:
An operation of receiving a first synchronization beacon frame transmitted by a second node in the neighbor aware network within a second half of a current discovery window using the receiver, the first synchronization beacon frame An operation in which a beacon frame carries first anchor master information, the first anchor master information includes a first AMR, and the anchor master information of the first node includes a second AMR; and ,
An operation of skipping updating the current node status of the first node and the anchor master information of the first node when the first AMR is lower than the second AMR;
Make it possible to
node. The processor performs the following operations:
Determining whether the current node status of the first node is in a synchronized state;
An operation of transmitting a second synchronization beacon frame within the next discovery window using the transmitter when the current node status of the first node is in a synchronized state, or the current of the first node When the node status is asynchronous, an operation to skip sending a synchronous beacon frame;
30. The node of claim 28, further executing: The processor is
Determining whether the current node status of the first node is in a synchronized state;
An operation of further determining whether a previous node status of the first node is in a synchronized state when a current node status of the first node is in a synchronized state;
An operation of transmitting the second synchronization beacon frame within the next discovery window using the transmitter when the node status before the first node is in a synchronized state, or before the first node An operation of skipping transmission of a synchronous beacon frame when the node status of the first node is asynchronous, or transmitting a synchronous beacon frame when the current node status of the first node is asynchronous. The skip action,
30. The node of claim 28, further executing: A node that is used in a neighbor aware network;
A processor;
Memory configured to store computer executable program code;
A communication interface;
Including receiver and transmitter,
The processor, the receiver, the transmitter, the storage device, and the communication interface communicate with each other using a bus;
The processor reads program code and data stored in the storage device, the program code includes an instruction, and when the processor executes the instruction, the instruction executes the following operation:
An operation to determine whether the node status before the first node is asynchronous;
Synchronize within the current discovery window using the transmitter when the previous node status of the first node is asynchronous and the current node status of the first node is synchronous or asynchronous An operation to skip sending a beacon frame;
Make it possible to
node. The processor performs the following operations:
When the current node status of the first node is in a synchronized state, and the node status of the first node is in a synchronized state within the second half of the current discovery window, the transmitter is used to 32. The node of claim 31, further performing an operation of skipping sending a synchronization beacon frame within a current discovery window and transmitting the synchronization beacon frame within a next discovery window. A node that is used in a neighbor aware network;
A processor;
Memory configured to store computer executable program code;
A communication interface;
Including receiver and transmitter,
The processor, the receiver, the transmitter, the storage device, and the communication interface communicate with each other using a bus;
The processor reads program code and data stored in the storage device, the program code includes an instruction, and when the processor executes the instruction, the instruction executes the following operation:
Obtaining a master rank (MR) of another node in the neighbor aware network;
An operation of receiving a first synchronization beacon frame transmitted by a second node in the neighbor aware network, wherein the first synchronization beacon frame carries first anchor master information, and the first Anchor master information includes a first anchor master rank (AMR), the first AMR includes first medium access control (MAC) address information, and a second of the first node An operation in which the anchor master information includes the second MAC address information; and
If the first AMR is lower than a preset percentage of MR acquired by the first node and the first MAC address information is the same as the second MAC address information, the An operation of skipping updating the second anchor master information;
Make it possible to
node.

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