KR20190141414A - Heterogeneous network gateway and method for mitigating interference between wireless IoT networks using the same - Google Patents

Abstract

The present invention relates to a heterogeneous network gateway and a method for mitigating interference between short-range wireless networks using the same. According to the present invention, a method for mitigating interference between wireless networks using a heterogenous network gateway communicating with a plurality of different kind of networks comprises the steps of: analyzing a communication state of a plurality of networks to collect quality of service (QoS) information about the networks; checking a transmission ratio and a channel capacity of the network based on the QoS information and comparing the same with a threshold transmission ratio and a threshold capacity preset for each network; operating a meditation mode when the network with at least one from the transmission ratio and the channel capacity less than a threshold is two kinds or more; and planning a communication allowance section allocated to each network when operating the meditation mode, and generating and broadcasting a transmission plan packet including information about the planned communication allowance section. Accordingly, when interference is generated between short-range wireless networks operated by communication technologies different from each other, the heterogeneous network gateway executes the meditation mode to schedule and broadcast a transmission plan for each network, thereby providing advantages of mitigating an interference problem between heterogeneous networks and increasing a transmission ratio of the entire network.

Description

Heterogeneous network gateway and method for mitigating interference between wireless IoT networks using the same}

The present invention relates to a heterogeneous network gateway and a method for mitigating interference between short-range wireless networks using the same, and more particularly, to a heterogeneous network gateway capable of mediating interference between a plurality of heterogeneous wireless networks, and to mitigating interference between short-range wireless networks using the same. It is about a method.

The Internet of Things (IoT) refers to a technology that allows many things to be connected, exchange data, and provide useful services to users through a network. The communication and network technology between things is essential for the implementation of the IoT system, and the number of things connected to the IoT system will increase to be difficult to implement by wire communication, as the IoT concept that all things are connected. Therefore, it is realistic to implement a communication between a communication and a network by using a wireless communication technology, and much research is being conducted on a wireless communication technology suitable for the IoT as the IoT receives much attention in the market.

Short-range wireless communication technologies for the IoT are characterized by low power consumption and short communication distances. Most of the things connected to the IoT system do not have sufficient battery capacity, and if a lot of power is consumed for wireless communication, frequent battery replacement is required, which makes it impossible to implement a realistic system. In addition, when the wireless communication is performed using low power, the distance at which communication is possible is shortened. Wireless communication technologies for the IoT use a method in which several communication devices form a network to relay data transmission to solve a short communication distance problem.

Another feature of wireless communication technologies for the IoT is the use of unlicensed frequency bands. Frequency bands are an essential resource for wireless communications, and governments lend their rights to use them through auctions over a period of time. The frequency band in which the communication is carried out by obtaining a license is called a licensed frequency band, and a mobile communication system is a wireless communication system using a representative licensed frequency band.

Unlicensed frequency bands, unlike licensed frequency bands, are bands that anyone is allowed to use without paying for the frequency bands, provided that they comply with radio regulations. Typical unlicensed frequency bands include the Industrial Scientific and Medical (ISM) band, and wireless communication technologies using the ISM band include Wi-Fi, Bluetooth, and ZigBee.

The unlicensed frequency band is a frequency band that is used by many products using short-range wireless communication because it does not pay a fee, and as the Internet of Things approaches reality, interference problems between wireless communication technologies that use the unlicensed frequency band must be solved. It is a problem.

The background technology of the present invention is disclosed in Korean Patent Laid-Open No. 2017-0083193 (published Jul. 18, 2017).

SUMMARY OF THE INVENTION An object of the present invention is to provide a heterogeneous network gateway and a method for mitigating interference between short-range wireless networks using the arbitration function in a heterogeneous network gateway to improve interference occurring between different networks using an unlicensed frequency band. .

The present invention relates to a method for mitigating interference between wireless networks using heterogeneous network gateways that communicate with a plurality of networks of different types, wherein the communication state of the plurality of networks is analyzed to determine quality of service (QoS) information for the plurality of networks. Acquiring a data rate, verifying a transmission rate and a channel capacity of the network based on the QoS information, and comparing the transmission rate and the channel capacity with a predetermined threshold transmission rate and a threshold capacity for each network; If it is determined that there are at least two types of networks having at least one lower than a threshold, driving the arbitration mode for inter-network arbitration, and planning a communication allowance interval allocated to each network when the arbitration mode is driven, respectively, The transmission plan packet containing the information Provided is a method for mitigating interference between wireless networks, including generating and broadcasting.

The broadcasting may include sequentially transmitting the transmission plan packet generated for each network to each network.

In the broadcasting, when the arbitration mode is driven, the transmission plan packet may be broadcast by planning the communication permission interval for only the determined at least two types of networks among the plurality of networks.

In the broadcasting, when the arbitration mode is driven, the transmission plan packet may be broadcast by planning the communication permission interval for all networks.

In addition, the transmission plan packet may be configured in the order of header information for the corresponding network, header information encoded in a predetermined pattern to inform the driving of the arbitration mode, and payload information corresponding to the communication permission interval.

The information on the communication permission interval may include a window length indicating the temporal length of the communication permission interval and a transmission interval indicating the idle time until the communication permission interval comes again.

In addition, the threshold transmission rate is different for each network, and the higher the threshold transmission rate is, the longer the communication permission interval may be allocated to the network.

The plurality of networks may include Wi-Fi, Bluetoooth, and Zigbee networks, and the threshold transmission rate may have a high value in order of Wi-Fi, Bluetoooth, and Zigbee networks.

In addition, the QoS information of the network may include at least one of received power received from a communication node in the network, the number of communication nodes, a ratio of packets successfully received to the communication node, and interference power on the network. have.

In addition, the present invention is a heterogeneous network gateway that communicates with a plurality of networks of different types, the data collection unit for analyzing the communication state of the plurality of networks to collect QoS (Quality of Service) information for the plurality of networks A comparator for checking a transmission rate and a channel capacity of the network based on the QoS information, and comparing the transmission rate and the channel capacity with a predetermined threshold transmission rate and a threshold capacity for each network; and at least one of the transmission rate and the channel capacity. If it is determined that there are at least two types of networks having a threshold lower than each other, the determination unit for driving the arbitration mode for inter-network arbitration, and the communication permission interval allocated to each network when the arbitration mode is driven are respectively planned, and the planned communication permission is allowed. Create a transmission plan packet containing the information of the interval Provides a heterogeneous network gateway including a transmission schedule that bit.

According to the present invention, in case of interference between short-range wireless networks operated by different communication technologies, the intermediary mode is executed at the heterogeneous network gateway to schedule and broadcast a transmission plan of each network, thereby alleviating the interference problem between the heterogeneous networks. Of course, there is an advantage that can improve the transmission rate of the entire network.

1 is a diagram illustrating a configuration of a heterogeneous network gateway according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a concept of determining whether to use an arbitration function by the heterogeneous network gateway illustrated in FIG. 1 based on information of each network.
FIG. 3 is a diagram illustrating how the heterogeneous network gateway shown in FIG. 1 broadcasts a transmission plan packet to each network.
4 is a diagram illustrating an example in which a heterogeneous network gateway illustrated in FIG. 1 allocates a transmission window to each network.
FIG. 5 is a diagram illustrating a method for mitigating interference between short-range wireless networks using the heterogeneous network gateway shown in FIG. 1.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present disclosure.

The present invention relates to a method for mitigating interference between short-range wireless networks using heterogeneous network gateways, and proposes a method for mediating interference problems between heterogeneous network gateways in a heterogeneous network gateway communicating with a composite network using an unlicensed frequency band.

1 is a diagram illustrating a configuration of a heterogeneous network gateway according to an embodiment of the present invention.

As shown in FIG. 1, the heterogeneous network gateway 100 according to an exemplary embodiment of the present invention is a gateway device capable of communicating with heterogeneous hybrid networks, and includes at least two or more types of local area networks (Wi−) using an unlicensed frequency band. Fi, Bluetooth, ZigBee network, etc.) can be configured to communicate.

1 representatively illustrates a configuration of a heterogeneous network gateway supporting all three short-range communication methods, Wi-Fi, Bluetooth, and ZigBee communication. For this purpose, the heterogeneous network gateway 100 is a Bluetooth communication unit for communication with each network. 160, the Wi-Fi communication unit 170, and the Zigbee communication unit 180 are all included.

Of course, the heterogeneous network gateway 100 according to an embodiment of the present invention may be configured to support more various communication methods. Accordingly, the types of the coverable local area networks and the short-range communication schemes that can be covered by the heterogeneous network gateway 100 are not necessarily limited to those described above.

The heterogeneous network gateway 100 includes a communication device for supporting each communication technology for communication with a plurality of communication technologies. Since the three communication technologies described above all share the ISM band, which is an unlicensed frequency band, the signals of the respective networks become interference signals to each other.

The heterogeneous network gateway 100 analyzes the state of each network to determine whether there is interference between networks, and directly operates an arbitration mode when interference occurs to mitigate the interference and improve the transmission rate of the entire network.

Referring to FIG. 1, the heterogeneous network gateway 100 includes a data collecting unit 110, an interference measuring unit 120, a comparing unit 130, a determining unit 140, a Bluetooth communication unit 160, and a Wi-Fi communication unit 170. And a Zigbee communication unit 180.

The data collector 110 analyzes communication states of the plurality of networks and collects quality of service (QoS) information for the plurality of networks.

The data collecting unit 110 analyzes the communication state of each network and collects QoS information for each network while communicating with each network through each communication unit 160, 170, 180.

The data collector 110 may store the collected QoS information for each network in a database. QoS information stored in the database can be any information that can indicate the transmission status and the interference level.

In this case, the QoS information of the network is the received power (QoS information 1) received from at least one communication node in the network, the number of communication nodes (QoS information 2) existing in the network, and the ratio of packets successfully received to the communication node. (QoS information 3) and at least one of interference power (QoS information 4) detected on the corresponding network.

Here, the communication node is a node connected to the corresponding network to communicate in a corresponding communication method, and may be various, such as a smartphone, a notebook, a tablet PC, a wireless speaker, a smart pad, a home appliance, a sensor node, and the like.

The data collection unit 110 may collect from the information measured by the interference measuring unit 120 in the case of interference power (QoS information 4) among the QoS information. The interference measuring unit 120 may measure the power of the interference signal existing in each network by comparing the received power and the spectrum of the signals received by the communication units 160, 170, and 180. Of course, since the interference measurement technology is variously known, a detailed description thereof will be omitted.

The comparator 130 checks the transmission rate and the channel capacity of the network based on the QoS information, and compares the transmission rate and the channel capacity with the threshold transmission rate and the threshold capacity set for each network.

Here, threshold transmission rates and threshold capacities are set differently for each network. That is, the threshold value for the transmission rate and the threshold value for the channel capacity are different according to the type of the network.

The Wi-Fi network requires a higher threshold transmission rate (high performance) than other networks, and in this embodiment, the threshold transmission rate has a higher value in the order of Wi-Fi, Bluetoooth, and Zigbee networks. In the case of Wi-Fi network, it is mainly related to large data such as video, high speed communication, and long distance communication, Bluetoooth network is involved in communication such as keyboard and mouse, and Zigbee network is closely related to communication in sensor network. do.

Of course, as will be described later, a network having a higher threshold transmission rate may be allocated a communication allowable interval (actually, a window interval) that is longer than other networks when the arbitration mode is driven.

If it is determined that there are at least two types of networks having at least one of a transmission rate and a channel capacity below a threshold, the determination unit 140 drives an arbitration mode for inter-network arbitration.

That is, the determination unit 140 checks the channel states of the plurality of networks based on the data stored in the database and determines whether to satisfy the sufficient transmission rate or channel capacity guaranteed by each network, and determines whether to operate the arbitration mode according to the determination result. Decide

FIG. 2 is a diagram illustrating a concept of determining whether to use an arbitration function by the heterogeneous network gateway illustrated in FIG. 1 based on information of each network.

As shown in FIG. 2, in the embodiment of the present invention, the heterogeneous network gateway 100 analyzes the transmission rate and the channel capacity from the QoS information of each network (Wi-Fi, Bluetoooth, Zigbee), and then the transmission rate and the channel capacity. Based on the result of comparing the threshold rate and the threshold capacity with respect to the preset threshold rate, respectively, it is determined whether a transmission plan is required.

For example, if there are two types of networks (eg, Wi-Fi, Bluetoooth) whose transmission rate is less than the threshold transmission rate, it is determined that interference has occurred between these two types of networks, the arbitration mode is driven, and the transmission plan is performed. See Table 1 below for more various examples.

As shown in Table 4 and Case 7 of Table 1, when it is determined that there are two or more types of networks having at least one of a transmission rate and a channel capacity below the threshold, mutual interference occurs between two or more determined networks. If it is determined that the transmission mode is executed, the transmission mode is executed.

However, in Table 2, when only one type of network having at least one of a transmission rate and a channel capacity below the threshold, such as 'Case 2' and 'Case 3', exists in the network itself, not an interference problem between several networks. It is judged as a problem (network temporary error, node failure, etc.) and does not run the arbitration mode.

Out of multiple networks
Network with transfer rate ≤ threshold transfer rate Out of multiple networks
Network with channel capacity ≤ threshold capacity Abnormal
network
Kinds Transmission plan
Need Case 1 - - 0 × Case 2 - Wi-Fi One × Case 3 Bluetooth Bluetooth One × Case 4 Bluetooth Wi-Fi 2 ○ Case 5 Bluetooth, Wi-Fi - 2 ○ Case 6 Bluetooth, Wi-Fi Zigbee 3 ○ Case 7 - Bluetooth, Wi-Fi, Zigbee 3 ○

Of course, if there are 0 types of faulty networks, such as 'Case 1', all kinds of networks are in normal operation and no interference between networks occurs.Therefore, there is no need to establish a transmission plan. Keep it.

The transmission planning unit 150 operates when the determination result of the determination unit 140 determines that the mediation function is necessary. That is, when driving of the arbitration mode is commanded, the transmission planning unit 150 plans (scheduling) the communication permission intervals allocated to each network, and generates a transmission plan packet including information on the planned communication permission intervals and broadcasts them. Cast

When the arbitration mode is driven, the transmission planning unit 150 plans a communication permission section for only at least two types of networks determined by the determination unit 140 of the plurality of networks, or designates a communication permission section for all the entire networks. By planning, the transmission plan packet can be broadcast.

 For example, 'Case 4' of Table 1, the transmission planning unit 150 newly plans only the communication allowance interval for the Bluetooth network and the Wi-Fi network except for the Zigbee network, among the three networks. Each generated transmission plan packet can be broadcast separately to a Bluetooth network and a Wi-Fi network.

In addition, the transmission planning unit 150 may newly plan a communication allowance interval for all three networks and then broadcast them sequentially to each network. As such, the transmission planning unit 150 may set a transmission plan for only the network in which the problem occurs, or set a transmission plan for all networks.

Of course, the transmission planning unit 150 may consider the number of communication nodes of each network, the general demand transmission rate of the network, etc. when scheduling the communication allowance interval, and each communication unit 160, 170, 180 to transmit the transmission plan packet to each network. ) Can be controlled.

In addition, the transmission planner 150 may sequentially broadcast the transmission plan packet generated for each network to each network. That is, the broadcasting operation may be performed in any order or in a predetermined order in order to avoid interference between heterogeneous communications in the heterogeneous network gateway 100. For example, a transmission plan packet may be broadcast in the order of a Wi-Fi network, a Bluetooth network, and a Zigbee network.

Of course, the transmission plan packet may be broadcast periodically and delivered to nodes in multiple networks for continued inter-network arbitration. In addition, each receiving device (communication node) in each network may receive and follow the broadcasted transmission plan packet, and an operation following the transmission plan may be implemented in hardware or software according to a developer's freedom.

FIG. 3 is a diagram illustrating how the heterogeneous network gateway shown in FIG. 1 broadcasts a transmission plan packet to each network.

As shown in FIG. 3, the transmission planner 150 may control each communication unit 160, 170, 180 to broadcast a transmission plan packet to a corresponding network.

In this case, as described above, the broadcasting for each network may be sequentially performed in an arbitrary order in order to avoid interference between signals (transmission plan packets) transmitted from each communication unit 160, 170, 180.

The transmission plan packet may be configured in the order of general header information of the corresponding network, header information (hereinafter, arbitration notification header) indicating the operation of the arbitration mode, and payload information corresponding to the communication permission interval. That is, unlike the general data packet structure, the transmission plan packet generated by the transmission planner 150 has a structure in which an arbitration notification header section is additionally inserted between the header section and the payload section.

The Arbitration Notification Header is a header attached to the beginning of the payload portion to indicate that the transmission plan packet is a predetermined pattern, that is, a predetermined pattern (for example, a pattern in which 1 and 0 are repeated; "1010101010 ..."). Can be encoded.

As such, the arbitration notification header is encoded in a specific pattern so that the transmission plan packet can be distinguished from the normal packet. Accordingly, each node in the network recognizes the operation of the arbitration mode based on the arbitration header information inserted in the packet, and also recognizes that the transmission plan information is included in the payload section following the arbitration header. Communication is performed based on the transmission plan information.

The information of the communication permission section included in the payload section includes information regarding the transmission interval and the window length, as shown in FIG. 3. Here, the window length represents the temporal length of the communication permission interval. That is, the window length is time information that is allowed to be transmitted in each network, and nodes of the network may communicate using multiple access techniques of each network during the window length.

The transmission interval represents the idle time until the communication allowance interval comes again in each network. In other words, the transmission interval may indicate information for notifying the start of a window in which each transmission is allowed in the next network. The gateway may measure the arrival time of a received packet from the network and use transmission interval information when synchronization is required.

When the use of the arbitration function is determined by the determination unit 140, the transmission planner 150 determines a time for allocating to each network based on the information in the database, and accordingly determines a window length for transmission to each network. do. To efficiently allocate window lengths, you can take advantage of stored information in the database, such as what services are being used in each network, how many nodes are using them, and so on.

4 is a diagram illustrating an example in which a heterogeneous network gateway illustrated in FIG. 1 allocates a transmission window to each network.

The communication nodes of each network perform transmission using the multiple access scheme of each network during the corresponding window time, and wait for the broadcasting of the next transmission plan packet when the window time ends.

In the case of FIG. 4, each window time for Wi-Fi, Zigbee, Wi-Fi, and Bluetooth communication is simply illustrated as being allocated to 4 seconds, 2 seconds, and 3 seconds. In other words, the higher the threshold transmission rate, the longer the window time, which is a communication allowance interval, is allocated.

In addition, in the case of FIG. 4, the communication enable intervals are allocated in the order of Wi-Fi, Zigbee, Wi-Fi, and Bluetooth communication, and the Wi-Fi communication intervals exist twice in a total of 13 seconds.

Wi-Fi has a window interval of 4 seconds and has two transmission interval information of 2 seconds and 3 seconds corresponding to each of the Zigbee communication section and the Bluetooth communication section. Therefore, in the case of Wi-Fi communication, it takes 2 seconds for Zigbee communication after 4 seconds of data transmission, and then 3 seconds for Bluetooth communication after 4 seconds of data transmission.

In case of Zigbee, it sends data for 2 seconds and waits 11 seconds for Wi-Fi, Bluetooth, and Wi-Fi communication. In case of Bluetooth, it transmits data for 3 seconds and waits 10 seconds for Wi-Fi, Zigbee, and Wi-Fi communication. Of course, the data transmission intervals, that is, the window intervals of each network, are scheduled so as not to overlap each other, and it can be seen that they repeatedly arrive according to the transmission interval.

As described above, the embodiment of the present invention improves the transmission rate of the entire network through the heterogeneous network gateway mediating interference between networks operated by different communication technologies. In particular, when the IoT system becomes a reality, the interference problem between networks will be an important issue, and thus the technique according to the present embodiment is expected to play an important role in coping with the interference issue.

As such, according to an embodiment of the present invention, an interference problem occurring between networks of different communication technologies using an unlicensed frequency band in an IoT system may be improved through an arbitration function in a heterogeneous network gateway, and wireless in an IoT service system. Can be used to improve the performance of the network infrastructure.

FIG. 5 is a diagram illustrating a method for mitigating interference between short-range wireless networks using the heterogeneous network gateway shown in FIG. 1.

First, the data collector 110 analyzes communication states of a plurality of networks and collects Quality of Service (QoS) information for the plurality of networks (S510).

The comparison unit 130 checks the transmission rate and the channel capacity of the network based on the QoS information, and compares the transmission rate and the channel capacity with the threshold transmission rate and the threshold capacity set for each network (S520).

Here, the determination unit 140 checks whether there are two or more types of networks in which at least one of a transmission rate and a channel capacity is less than a threshold (S530). If there are two or more types, the determination unit 140 determines that a transmission plan is necessary and drives the arbitration mode for inter-network arbitration (S540).

 When the arbitration mode is driven by the determination unit 140, the transmission planning unit 150 plans (schedules) a communication permission interval allocated to each network (S550). In addition, the transmission planning unit 150 generates a transmission plan packet including information on the planned communication permission interval and broadcasts it to each network as shown in FIG. 3 (S560).

According to the present invention as described above, when interference occurs between short-range wireless networks operated by different communication technologies, a heterogeneous network gateway executes an arbitration mode to schedule and broadcast a transmission plan of each network, thereby preventing interference between heterogeneous networks. As well as mitigation, there is an advantage that can improve the transmission rate of the entire network.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

100: heterogeneous network gateway 110: data collection unit
120: interference measurement unit 130: comparison unit
140: determination unit 150: transmission planning unit
160: Bluetooth communication unit 170: Wi-Fi communication unit
180: Zigbee Communication

Claims (18)

In the interference mitigation method between wireless networks using a heterogeneous network gateway that communicates with a plurality of different types of networks,
Analyzing the communication status of the plurality of networks to collect Quality of Service (QoS) information for the plurality of networks;
Checking a transmission rate and a channel capacity of the network based on the QoS information, and comparing the transmission rate and the channel capacity with a predetermined threshold transmission rate and a threshold capacity for each network;
If it is determined that there are at least two types of networks in which at least one of the transmission rate and the channel capacity is less than a threshold, driving an arbitration mode for inter-network arbitration; And
And planning a communication allowance interval allocated to each network when the arbitration mode is driven, and generating and broadcasting a transmission plan packet including information on the planned communication allowance interval. The method according to claim 1,
The broadcasting step,
And transmitting the transmission plan packet generated for each network sequentially to each network. The method according to claim 1,
The broadcasting step,
When the arbitration mode is running, the interference allowance method between the radio network to broadcast the transmission plan packet by planning the communication permission interval targeting only the determined at least two types of networks of the plurality of networks. The method according to claim 1,
The broadcasting step,
When the arbitration mode is in operation, the interference mitigation method between the wireless network to broadcast the transmission plan packet by planning the communication permission interval for all networks. The method according to claim 1,
The transmission plan packet,
A method for mitigating interference between wireless networks, comprising header information for a corresponding network, header information encoded in a predetermined pattern to inform the operation of the arbitration mode, and payload information corresponding to the communication permission interval. The method according to claim 1,
The information of the communication allowed section,
And a window length indicating a temporal length of the communication permission interval and a transmission interval indicating a pause time until the communication permission interval comes again. The method according to claim 1,
The threshold transmission rate is different for each network,
The network with higher threshold transmission rate is the interference mitigation method between the radio network is assigned a longer time interval. The method according to claim 7,
The plurality of networks,
Includes Wi-Fi, Bluetoooth and Zigbee networks,
The threshold transmission rate is,
Method of mitigating interference between wireless networks with the highest values in order of Wi-Fi, Bluetoooth and Zigbee networks. The method according to claim 1,
QoS information of the network,
And at least one of a received power received from a communication node in the network, the number of communication nodes, a percentage of packets successfully received by the communication node, and interference power on the network. In a heterogeneous network gateway that communicates with a plurality of networks of different types,
A data collector configured to analyze communication states of the plurality of networks and collect Quality of Service (QoS) information for the plurality of networks;
A comparison unit for checking a transmission rate and a channel capacity of the network based on the QoS information, and comparing the transmission rate and the channel capacity with a predetermined threshold transmission rate and a threshold capacity for each network;
A determination unit for driving an arbitration mode for inter-network arbitration when it is determined that at least two kinds of networks having at least one of the data rate and the channel capacity are less than a threshold are present; And
And a transmission plan unit configured to plan a communication allowance interval allocated to each network when the arbitration mode is driven, and to generate and broadcast a transmission plan packet including information on the planned communication allowance interval. The method according to claim 10,
The transmission planning unit,
A heterogeneous network gateway which controls each communication unit in charge of each network and sequentially broadcasts the transmission plan packet generated for each network to each network. The method according to claim 10,
The transmission planning unit,
The heterogeneous network gateway is configured to broadcast the transmission plan packet by planning the communication permission interval for only the determined at least two types of networks of the plurality of networks when the arbitration mode is driven. The method according to claim 10,
The transmission planning unit,
The heterogeneous network gateway, when the arbitration mode is driven, broadcasts the transmission plan packet by planning the communication permission interval for all networks. The method according to claim 10,
The transmission plan packet,
The heterogeneous network gateway is configured in the order of the header information for the network, the header information encoded in a predetermined pattern to inform the operation of the arbitration mode, and the payload information corresponding to the communication permission interval. The method according to claim 10,
The information of the communication allowed section,
And a window length indicating a temporal length of the communication permission interval and a transmission interval indicating a pause time until the communication permission interval comes again. The method according to claim 10,
The threshold transmission rate is different for each network,
The heterogeneous network gateway in which the higher the threshold transmission rate is allocated, the longer the communication permission interval is. The method according to claim 16,
The plurality of networks,
Includes Wi-Fi, Bluetoooth and Zigbee networks,
The threshold transmission rate is,
Heterogeneous network gateway with the highest values in the order of Wi-Fi, Bluetoooth and Zigbee networks. The method according to claim 1,
QoS information of the network,
And at least one of a received power received from a communication node in the network, a number of the communication nodes, a percentage of packets successfully received by the communication node, and interference power on the network.

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