JP2016225994A - node - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a node capable of preventing cluster misalignment in the same area.SOLUTION: At the node, a plurality of clusters among clusters of networks that connect each cluster provided by Bluetooth (R) in a mesh form are connected to each other in a mesh form. The node comprises first means Sw for transferring packets between the respective clusters in accordance with route management means, second means M for constructing a first cluster among the clusters connected to the first means Sw, third means S for participating in a second cluster among the clusters connected to the first means Sw, and fourth means for changing states between a first state 1a in which the first cluster connected to the first means Sw is constructed and a network is constructed by participating in the second cluster, and a second state 3 in which the first cluster connected to the first means Sw is not constructed and a network is constructed by participating in a plurality of second clusters.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a node, a communication integrated circuit, or a control program.

  Conventionally, a scatternet method is known. For example, the technique described in Japanese Patent Application Laid-Open No. 2003-516095 discloses a system and method for scheduling communication between piconets in a scatternet, and a first network node transmits a capacity allocation message to a second network node. The message includes a parameter indicating the capacity requested from the second terminal and a description of the capacity available in the first terminal, and the second terminal executes a matching function to communicate with the first terminal. Techniques have been disclosed for determining whether there is a mutually acceptable available capacity that can be allocated to a communication session.

JP 2003-516095 A

  By the way, in the conventional scatternet method, a BT unit having slaves participating in three piconets appears. However, since the slave itself does not have a BT packet switching function capable of path management, each slave is connected to another slave. If the BT packet is transferred to the scatter net, the same BT packet is congested on the scatter net.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a node, a communication integrated circuit, or a control program that can provide a BT packet switching function capable of route management to a BT unit that is a slave participating in three piconets. is there.

  In order to solve the above problems, the node of the present invention is configured such that each of a plurality of the clusters in the network in which the clusters provided by Bluetooth (registered trademark) are connected in a mesh shape is connected to each other. A first means (Sw) for transferring packets between the respective clusters in the light of route management means, and a second one for constructing a first cluster among the clusters connected to the first means (Sw). Means (M), third means (S) participating in a second cluster among the clusters connected to the first means (Sw), and the first cluster connected to the first means (Sw). A first state (1a) for constructing and participating in the second cluster to construct the network, and a plurality of the second clusters without constructing the first cluster connected to the first means (Sw) Characterized in that it comprises a fourth means for state transition between the second state to build the network to participate (3).

According to the present invention, the first to third aspects of the present invention provide a state in which a node that constructs a network that connects each cluster provided by Bluetooth (registered trademark) in a mesh form does not construct a cluster from a state in which the cluster is constructed. Since transition is possible, cluster irregularity can be prevented within the same area.
In addition, a BT packet switching function capable of path management can be provided to a BT unit that is a slave participating in three piconets.

It is an example of the block diagram of the scatter net of embodiment.

  Hereinafter, an embodiment of the present invention will be described in detail.

  FIG. 1 is an example of a configuration diagram of the scatternet of the embodiment. For example, the scatternet transmits and receives a BT (Bluetooth: registered trademark) master M that constructs a piconet (inside the dotted line in FIG. 1), at least one BT slave S that participates in the piconet, and transmits and receives BT packets. An information processing unit that is not connected to each other, and each port is connected to the master M, the slave S, and the information processing unit, and includes a switch unit Sw that receives a BT packet and transfers it to another port, and a slave S, A BT unit 2 that is a peripheral device connected to the BT unit 1 that transmits and receives BT packets via the slave S, and a scatter unit that includes the slave S and that serves as a scatternet terminal that transmits and receives BT packets via the slave S 3 and a plurality of BT units 1 exist, and at least one slave unit is included in one piconet. S can participate, and the slave S of the BT unit 1 participates in the piconet constructed by the master M of the other BT unit 1 and performs communication within the piconet, whereby the piconet is connected to the network structure. And the slaves S of the BT units 2 and 3 participate in any one piconet to perform intra-piconet communication, and a plurality of BT units 1 to 3 coexist in the piconet. Moreover, you may provide the BT unit 3 comprised by the three slaves S and the one switch part Sw.

  Devices such as the BT units 1 to 3 include a computer unit having a CPU, a ROM, a RAM, and the like. The master M and the slave S of the BT unit 1 share a wireless transmission / reception unit.

  The switch unit Sw is configured as an L3 switch and includes an FDB (Forwarding DataBase) that performs all path management of two or three piconets, and other ports are compared with other ports in view of BT packets received from each port. Will be transferred to. Further, the relay point of two or three piconets is configured, and each BT packet received from the piconet is checked against the FDB or the like to determine the BT unit 1 or 3 as a transfer destination. Designating the transfer destination of the BT packet, transferring it to the port on the BT unit 1, 3 side, and the master M or slave S receiving the transfer of the BT packet sending the BT packet to the BT unit 1, 3; Become.

  The BT unit 1 uses its own identification information as piconet identification information, and directs the beacon including the piconet identification information and the piconet identification information of the piconet to which the slave S participates from the master M to another BT unit 1 or the like. Broadcast transmission, and select a piconet to participate in its own slave S based on the beacon received from the other BT unit 1 and join it there, and the ring of the three BT units 1 including itself is connected to the other ring. Control to link.

  Specifically, in the case of the BT unit 1a, one slave S is based on the received beacon and the BT unit 1b corresponding to the condition in which the ring of the three BT units 1 including itself is connected to the other ring Select and participate in the constructed piconet and link the three BT units 1a, 1b, 1c including the self, and the other slave S based on the received beacon forms the three BT units 1 including the self The piconet constructed by the BT unit 1d corresponding to the condition is selected and participated, and the three BT units 1a, 1b, and 1d including itself are linked. Here, the BT unit 1 finds an arbitrary piconet constructed by another BT unit 1 to which the BT unit 1 that is not connected is not found when there is no suitable piconet in which the three BT units 1 including the self are connected. You will be there.

  In the above-described embodiment, the scatternet is configured to notify the other BT unit 1 of the identification information of the piconet constructed by itself and the other piconet in which the scatter unit 1 participates. It is also possible to provide a means for the self to participate in another piconet so that the ring of the three BT units 1 including the self is connected to the other ring. The BT units 1 to 3 include a communication integrated circuit including a master M, a switch unit Sw, a slave S, and the like, and the master M, the switch unit Sw, the slave S, and the like are controlled by the communication integrated circuit, and the BT unit. It is good also as a structure which implement | achieves 1-3. Further, in order to prevent the piconet from standing up in the same area, each BT unit 1 may function as the BT unit 3 in accordance with the number of piconets in the same area.

  In the above description, the case where various control programs including the communication control program are stored in the ROM in advance has been described. However, the control program may be recorded on a storage medium readable by the computer unit. With such a configuration, when the program is read from the storage medium by the computer unit and the computer unit executes processing according to the read program, the same operations and effects as those of the devices of the above-described embodiment can be obtained.

  Here, the storage medium is a semiconductor storage medium such as RAM or ROM, a magnetic storage type storage medium such as FD or HDD, an optical reading type storage medium such as CD, DVD or BD, or a magnetic storage type / optical such as MO. Any storage medium can be used as long as it is a computer-readable storage medium regardless of electronic, magnetic, optical, or other reading methods.

  Further, the control program can be downloaded, installed and executed via a network system such as the Internet or a LAN.

  1-3 ... BT unit, M ... Master, S ... Slave, Sw ... Switch part

  In order to solve the above-mentioned problems, the node of the present invention includes a first means (information processing unit) and the clusters of the network network that connect each Bluetooth (registered trademark) cluster (hereinafter referred to as a cluster) in a network. Are connected to each other in a mesh pattern, and each of the first means is connected to each other, and second means (Sw) for transferring the packets between them in the light of route management means, and the first means A third means (M) for constructing a first cluster among the clusters connected to two means (Sw), and a fourth participating in a second cluster among the clusters connected to the second means (Sw). Means (S), constructing the first cluster and joining the second cluster, the second means (Sw) constructing the network, and constructing the first cluster Without and duplicate Wherein in participating in the second cluster second means (Sw), characterized in that the and a fifth means for state transition between the second state (3) constituting the reticulated network.

According to the present invention, the first to third aspects of the present invention, from a state in which a node that constructs a network that connects each Bluetooth (registered trademark) cluster (hereinafter referred to as a cluster) in a mesh form constructs the cluster, Since the state can be changed to a state in which the cluster is not constructed, the cluster can be prevented from standing up in the same area.
In addition, a BT packet switching function capable of path management can be provided to a BT unit that is a slave participating in three piconets.

  In order to solve the above-described problem, the node (1) of the present invention includes a master (M) that constructs a first cluster among the clusters of the mesh network that connects the Bluetooth (registered trademark) clusters in a mesh pattern, and Means (M, S) comprising slaves (S) participating in the second cluster, the means (M, S) comprising the first state (1a) for constructing the first cluster and participating in the second cluster; ) To the second state (3) in which a plurality of the second clusters are joined without constructing the first cluster.

  By the way, the conventional scatternet method has a problem that the cluster cannot be prevented in the same area in a mesh network in which nodes connect each cluster (piconet) in a mesh shape.

  Accordingly, an object of the present invention is to provide a node capable of preventing cluster clustering in the same area in a mesh network that connects clusters (piconets) in a mesh shape.

  According to the present invention, a node can prevent cluster clustering in the same area in a mesh network that connects clusters (piconets) in a mesh pattern.

  The present invention relates to a node.

Switch unit Sw is, L3 constitute a switch, two or three constitute a relay point piconet, and the like FDB (Forwarding DataBase) for performing all the route management of the piconet, FDB a BT packet received from the port It will be forwarded to other ports in light of the above .

  In order to solve the above problem, the node of the present invention includes a first mode for constructing a first Bluetooth cluster among the Bluetooth clusters of a mesh-like Bluetooth network that connects each Bluetooth cluster in a mesh shape, and Whether or not the Bluetooth cluster is in the same area is determined based on any one of the second modes that participate in a plurality of second Bluetooth clusters in the Bluetooth cluster without constructing the first Bluetooth cluster. It is characterized by providing it.

  By the way, the conventional scatternet method has a problem that it is impossible to prevent the piconet in the same area in a network-like Bluetooth network in which nodes connect each other in a network.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a node capable of preventing Bluetooth clusters from being disturbed in the same area in a mesh-like Bluetooth network that connects each Bluetooth cluster (piconet) in a mesh. It is in.

  According to the present invention, the node can prevent the clustering of Bluetooth clusters in the same area in the network Bluetooth network that connects the Bluetooth clusters in a network.

  The switch unit Sw is configured as an L3 switch and includes an FDB (Forwarding DataBase) that performs all path management of two or three piconets, and other ports are compared with other ports in view of BT packets received from each port. Will be transferred to. Further, the relay point of two or three piconets is configured, and each BT packet received from the piconet is checked against the FDB or the like to determine the BT unit 1 or 3 as a transfer destination. Designating the transfer destination of the BT packet, transferring it to the port on the BT unit 1, 3 side, and the master M or slave S receiving the transfer of the BT packet sending the BT packet to the BT unit 1, 3; Become.

  In order to solve the above-described problem, the node of the present invention is configured so that the first Bluetooth cluster among the Bluetooth clusters of the mesh-like Bluetooth network that connects the respective Bluetooth clusters in a mesh shape is constructed from the first state. Transitioning to a second state of joining a plurality of second Bluetooth clusters in the Bluetooth cluster without constructing the first Bluetooth cluster according to the number of the Bluetooth clusters in the same area. Features.

Claims (3)

Each cluster provided by Bluetooth (registered trademark) is connected to each other in a network, and each of the plurality of clusters is connected to each other, and a packet is routed between the clusters. First means (Sw) to transfer in light of the management means;
A second means (M) for constructing a first cluster of the clusters connected to the first means (Sw);
A third means (S) for joining a second cluster of the clusters connected to the first means (Sw);
The first state (1a) for constructing the first cluster connected to the first means (Sw) and joining the second cluster to construct the network, and the connection to the first means (Sw) A node (1) comprising: a fourth means for making a state transition between the second states (3) that do not construct the first cluster and participate in the plurality of second clusters to construct the network. . Of node (1)
Each cluster provided by Bluetooth (registered trademark) is connected to each other in a network, and each of the plurality of clusters is connected to each other, and a packet is routed between the clusters. First means (Sw) to transfer in light of the management means;
A second means (M) for constructing a first cluster of the clusters connected to the first means (Sw);
A third means (S) for joining a second cluster of the clusters connected to the first means (Sw);
The first state (1a) for constructing the first cluster connected to the first means (Sw) and joining the second cluster to construct the network, and the connection to the first means (Sw) And a fourth means for making a state transition between the second states (3) that do not construct the first cluster and participate in the plurality of second clusters to construct the network. . Computer
Each cluster provided by Bluetooth (registered trademark) is connected to each other in a network, and each of the plurality of clusters is connected to each other, and a packet is routed between the clusters. First means (Sw) to transfer in light of the management means;
A second means (M) for constructing a first cluster of the clusters connected to the first means (Sw);
A node (1) comprising: a third means (S) for joining a second cluster of the clusters connected to the first means (Sw);
The first state (1a) for constructing the first cluster connected to the first means (Sw) and joining the second cluster to construct the network, and the connection to the first means (Sw) A control program for functioning as a fourth means for making a state transition between the second states (3) in which the first cluster is not constructed and the plurality of second clusters are joined to construct the network.