WO2011145896A2 - 코디네이터 결정 방법 및 장치 - Google Patents
코디네이터 결정 방법 및 장치 Download PDFInfo
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- WO2011145896A2 WO2011145896A2 PCT/KR2011/003704 KR2011003704W WO2011145896A2 WO 2011145896 A2 WO2011145896 A2 WO 2011145896A2 KR 2011003704 W KR2011003704 W KR 2011003704W WO 2011145896 A2 WO2011145896 A2 WO 2011145896A2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
- G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
- G06F15/163—Interprocessor communication
- G06F15/173—Interprocessor communication using an interconnection network, e.g. matrix, shuffle, pyramid, star, snowflake
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/04—Network management architectures or arrangements
- H04L41/042—Network management architectures or arrangements comprising distributed management centres cooperatively managing the network
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- H—ELECTRICITY
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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- H04L45/16—Multipoint routing
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- H—ELECTRICITY
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- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
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- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44231—Monitoring of peripheral device or external card, e.g. to detect processing problems in a handheld device or the failure of an external recording device
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- H04L61/50—Address allocation
- H04L61/5038—Address allocation for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
Definitions
- the present invention relates to a method and apparatus for determining a coordinator, and more particularly, to a method and apparatus for selecting a coordinator for performing network management.
- the network management method is divided into a centralized control scheme and a distributed control scheme.
- the centralized control method is a method in which one of the devices included in the network performs a network management such as address allocation, bandwidth allocation, etc. as a coordinator.
- the present invention has been made in an effort to provide a method and apparatus for determining one of a plurality of devices included in a network as a coordinator, and to provide a computer readable recording medium having recorded thereon a program for executing the method. have.
- the coordinator that performs network management can be dynamically determined, so that the coordinator can join and leave the network freely.
- the optimal coordinator can be selected based on the information on the coordinator performance, so that network management can be performed more quickly and reliably.
- FIG. 1 illustrates a network topology of devices connected via an AV interface according to an embodiment of the present invention.
- FIG. 2A illustrates bidirectional transmission of data over an AV interface in accordance with an embodiment of the present invention.
- 2B illustrates bidirectional transmission of data via an AV interface according to another embodiment of the present invention.
- FIG. 3 illustrates a hierarchical structure of an AV network according to an embodiment of the present invention.
- FIG. 4 illustrates a device connection according to an embodiment of the present invention.
- FIG. 5 is a flowchart illustrating a method of determining a coordinator according to an embodiment of the present invention.
- 6A-6E illustrate coordinator selection criteria according to one embodiment of the invention.
- FIG. 8 is a flowchart illustrating a method of determining a coordinator according to another embodiment of the present invention.
- FIG 9 illustrates a device connection according to another embodiment of the present invention.
- FIG. 10 is a flowchart for explaining a method of determining a coordinator according to another embodiment of the present invention.
- FIG. 11 is a flowchart illustrating a method of determining a coordinator according to another embodiment of the present invention.
- FIG. 12 illustrates a device connection according to another embodiment of the present invention.
- FIG. 13 is a flowchart illustrating a method of determining a coordinator according to another embodiment of the present invention.
- FIG. 14 is a flowchart illustrating a method of determining a coordinator according to another embodiment of the present invention.
- FIG. 15 illustrates a coordinator determination apparatus according to an embodiment of the present invention.
- FIG. 16 illustrates a coordinator determination apparatus according to another embodiment of the present invention.
- the information includes information on at least one item for determining whether the corresponding device is a suitable device as a coordinator.
- the at least one item includes an item indicating whether the corresponding device is a device capable of performing the role of coordinator.
- the at least one item indicates whether the device is a switch device for relaying data between devices in the network and whether the device is a device in an always-on state. Includes more items.
- the at least one item further includes an item for the number of ports held by the device and an item for the maximum hop with other devices connected to the device.
- the step of determining the first device or the second device as the coordinator compares the information on the coordinator performance of the first device and the information on the coordinator performance of the second device as a result, if the second device is more suitable as the coordinator, determining the second device as the coordinator.
- the coordinator determination method according to the present invention is the coordinator of the network including the first device before the first device is connected to the second device, the coordinator serves as the coordinator; Handing over to a second device.
- the step of determining the first device or the second device as the coordinator compares the information on the coordinator performance of the first device and the information on the coordinator performance of the second device as a result, if the first device is more suitable as the coordinator, determining the first device as the coordinator.
- the coordinator determination method according to the present invention further includes the step of announce to the devices of the network that the first device is the coordinator.
- a method for determining a coordinator managing a network by a first device establishing a connection with a second device; Receiving information about coordinator capability from a first coordinator of a first network in which the first device was included before the connection; Receiving information about coordinator capability from a second coordinator of a second network in which the second device was included before the connection; And comparing the information on the coordinator performance of the first coordinator and the information on the coordinator performance of the second coordinator to merge the first coordinator or the second coordinator with the first network and the second network. And determining as a coordinator of the network, wherein the information about the coordinator performance includes information on at least one item for determining whether the corresponding device is a suitable device as a coordinator.
- An apparatus of a first device for determining a coordinator for managing a network for solving the technical problem includes a connection for establishing a connection with the second device; And receiving information about the coordinator capability of the second device from the second device, comparing the information about the coordinator capability of the first device with the information about the coordinator capability of the second device, and comparing the information about the coordinator capability of the second device. And a coordinator manager configured to determine a device or the second device as the coordinator, and the information on the coordinator performance includes information on at least one item for determining whether the device is a device suitable as a coordinator.
- An apparatus of a first device for determining a coordinator for managing a network includes a connection for establishing a connection with the second device; And receiving information about coordinator capability from a first coordinator of a first network in which the first device was included before the connection, and a second coordinator in a second network in which the second device was included before the connection. Receive information on the coordinator capability (capability) from, and compares the information on the coordinator performance of the first coordinator and the information on the coordinator performance of the second coordinator to compare the first coordinator or the second coordinator to the first And a coordinator manager configured to determine a network and a coordinator of a network in which the second network is merged.
- the information on the coordinator performance includes information on at least one item for determining whether the corresponding device is a device suitable as a coordinator. Include.
- the present invention provides a computer-readable recording medium having recorded thereon a program for executing the above-described coordinator determination method.
- the AV interface refers to an interface for transmitting and receiving AV data (audio / video data).
- AV link' means a link established based on an AV interface according to an embodiment of the present invention, and HDMI means connection through an HDMI cable.
- AV devices may configure a network through an AV interface according to an embodiment of the present invention.
- AV devices present in a plurality of rooms may be connected to various types of AV devices existing in the same or different rooms through an AV interface according to an embodiment of the present invention.
- a switch device relaying the AV link relays the connection based on the AV interface.
- the switch device may be a separate device for relaying the AV link, such as the AV link home switch 151, or may be an AV device 152, 153, 154, 155, 156, and 157 with a switch function.
- AV receivers 152, TV 153, and Blu-ray player 157 which are AV devices, function as switch devices
- AV devices are AV devices.
- TVs 155 and 156 serve as switch devices.
- the switch device may be a device for switching between an AV interface and a high-definition multimedia interface (HDMI) according to an embodiment of the present invention.
- HDMI high-definition multimedia interface
- the switch device 154 of the room 2 120 receives AV data from a computer and a game machine through HDMI, and receives the received AV data through the AV link according to an embodiment of the present invention.
- Devices of the network illustrated in FIG. 1 may be classified into a source / leaf device, a source / switch device, a switch device, a sink / switch device, and a sink / leaf device according to a role performed.
- a device providing AV data without relaying an AV link like the set top box 164 of room 1 110 corresponds to a source / leaf device, and the Blu-ray player 152 of room 1 110.
- a device for relaying an AV link while providing AV data to another device as described above corresponds to a source / switch device.
- a device that performs only the relay of the AV link such as the AV link home switch 151, corresponds to a switch device, and relays the AV link while receiving AV data from another device such as the TV 156 of the room 4 140.
- a device that receives AV data from another device without relaying an AV link like the projector 163 of room 4 140 corresponds to a sink / leaf device.
- the AV data of the Blu-ray player 157 of the room 1 110 is transmitted to the TV 155 of the room 3 130 through the AV receiver 152 and the AV link home switch 151.
- TV 156 in room 4 140 is connected to the TV 156, the AV link home switch 151, and the AV receiver 152 of the room 3 130 through the AV link home switch 151.
- the AV interface in order to freely transmit and receive AV data in a network based on an AV interface (hereinafter, referred to as an 'AV network') as shown in FIG. 1, the AV interface according to an embodiment of the present invention performs bidirectional transmission of data. You must support.
- Prior art AV interfaces such as DVI and HDMI only support unidirectional data transfer from the source device to the sink device.
- the AV data of the source device is only transmitted to the sink device, and the sink device cannot transmit the AV data to the source device through an AV interface according to the prior art such as DVI and HDMI.
- TV 156 a sink device in room 4 140, can only receive AV data from set-top box 158 connected via HDMI, and cannot transmit AV data to set-top box 158.
- the AV link through the AV interface may support data transmission in both directions to transmit data to a device in another room in the network structure shown in FIG. 1, or to receive data from a device in another room. Can be.
- the AV link according to an embodiment of the present invention enables bidirectional transmission of uncompressed video data, an example of bidirectional transmission of data will be described in detail with reference to FIGS. 2A and 2B.
- FIG. 2A illustrates bidirectional transmission of data over an AV interface in accordance with an embodiment of the present invention.
- the AV data (eg, uncompressed video data) of source device 1 210 is played back on sink device 1 216 (eg, a projector).
- AV data of source device 2 212 eg, set-top box
- source / sink device 214 eg, PC
- AV data of source / sink diavis 214 is generated.
- Can be played on sink / switch device 1 218 eg, a TV).
- the sink / switch device 1 218 receives the AV data of the source device 1 210 and the AV data of the source device 2 212 from the source device 1 210 and the source device 2 212, and then receives the received AV.
- the data is time division duplexed and sent to switch device 2 (220).
- the switch device 2 220 Upon receiving the AV data of the source device 1 210 and the AV data of the source device 2 212, the switch device 2 220 relays the received data to the sink device 1 216 to transmit the AV device of the source device 1 210. And transmits the AV data of source device 2 212 to source / sink device 214. Switch device 2 220 also receives AV data from source / sink device 214 and transmits the received AV data to switch device 1 218.
- AV data that is, uncompressed video data
- the AV interface may perform bidirectional data transmission through one cable and transmit AV data received from a plurality of source devices using time division duplex.
- 2B illustrates bidirectional transmission of data via an AV interface according to another embodiment of the present invention.
- the AV data (eg, uncompressed video data) of source device 1 210 is synchronized to sink device 1 216 (eg, Projector), AV data of source device 2 212 (e.g., set-top box) is played on source / sink device 214 (e.g., PC), and AV data may be played back at sink / switch device 1 218 (eg, a TV).
- sink device 1 216 e.g, Projector
- source device 2 212 e.g., set-top box
- source / sink device 214 e.g., PC
- AV data may be played back at sink / switch device 1 218 (eg, a TV).
- FIG. 2A illustrates a method of transmitting and receiving data using a time division duplex
- FIG. 2B illustrates a method of transmitting and receiving data using a space division duplex.
- an AV link based on an AV interface may include a plurality of sublinks.
- the plurality of sublinks may correspond to a plurality of spatially separated lanes representing a physical connection between the device and the device. Accordingly, as shown in FIG. 2B, when transmitting and receiving AV data, data may be transmitted and received using a spatial division duplex based on a plurality of sublinks.
- the sink / switch device 1 218 may transmit the AV data of the source device 1 210 and the AV data of the source device 2 212 to the spatial division duplex using two sublinks. Similarly, when receiving AV data of the source / sink device 214 from the switch device 2 220, it is received using another sublink.
- AV interfaces according to the prior art such as DVI and HDMI cannot perform bidirectional transmission of AV data. Therefore, as shown in FIG. 1, a data transmission network cannot be configured using the AV interface.
- the AV interface according to the present invention enables bidirectional data transmission through one cable as shown in FIGS. 2A and 2B, a flexible network configuration in which various devices are connected is possible.
- Ethernet data is generally data transmitted over a TCP / IP-based LAN.
- the AV interface according to the embodiment of the present invention supports bidirectional data transmission unlike the AV interface according to the related art, it is possible to transmit and receive Ethernet data through the AV interface. Accordingly, the notebook 160 transmits Ethernet data to the PC 161 through a network composed of AV links. To this end, switch devices present in the network of FIG. 1 have the ability to relay Ethernet data. Ethernet data is transferred from the wireless router 159 to the PC 161 through switching of the link layer.
- the switch devices when transmitting the USB data of the camera 162 to the notebook 160, transfer the USB data to the notebook 160 by using a switch function of the provided USB data. Since not only AV data but also various types of data are transmitted through the AV interface, various devices may be connected to a network connected through the AV interface to freely transmit and receive data. Switch devices relay USB data through switching of the link layer.
- data for controlling the device and the network may also be transmitted and received through the AV interface according to an embodiment of the present invention.
- the user may control the AV receiver 152 of the same room using the TV 153 of the room 1 110.
- the user controls the AV receiver 152 by operating the TV 153 to transmit data for controlling the AV receiver 152 through the AV interface.
- the TV 156 or the set-top box 158 of another room 140 connected to the network configured using the AV interface may be controlled through the AV interface.
- Data for controlling the network connected to the AV interface may also be transmitted and received through the AV interface, and data for managing the network as well as link setting may be transmitted and received through the AV interface as data for network control. .
- the transmission unit of the AV network may include information about the type of data.
- Information about the data type may be included in the header of the transmission unit of the AV network.
- power can also be delivered through an AV interface according to an embodiment of the present invention. Like power transfer via a USB interface, certain power can be delivered to the mobile device via an AV link. Power delivery over the AV link delivers power for charging or operating the mobile device.
- FIG. 3 illustrates a hierarchical structure of an AV network according to an embodiment of the present invention.
- a network hierarchy as shown in FIG. 3 may be used to bidirectionally transmit various types of data based on an AV interface according to an embodiment of the present invention.
- a network layer structure includes an application layer 310, a link layer 320, and a physical layer 310.
- the application layer 310 includes sublayers related to the processing of data transmitted and received through the above-described AV interface.
- the application layer of the source device may include a video source layer for transmitting video data, an audio source layer for transmitting audio data, and a CP layer for copyright protection of AV content. It may also include an Ethernet layer, a TCP / IP layer, and a DLNA / UPnP layer associated with the transmission of Ethernet data. It may also include a USB stack associated with the transfer of USB data and an AV interface command layer associated with the control of the AV network.
- the application layer of the sink device may include a video sink layer for receiving video data, an audio sink layer for receiving audio data, and a CP layer for copyright protection of AV content. It may also include an Ethernet layer, a TCP / IP layer, and a DLNA / UPnP layer associated with the reception of Ethernet data. It may also include a USB stack associated with the transfer of USB data and an AV interface command layer associated with the transfer of control data.
- the link layer 320 provides a function for accurately delivering data of the application layer to the destination device.
- the link layer 320 is an Isochronous Data Pakt./Depkt. For packetizing or depacketizing data requiring real-time transmission such as audio data and video data. Contains the hierarchy. It also includes an Asynchronous Data Pakt./Depkt. Layer for packetizing or depacketizing data that does not require real-time transmission, such as Ethernet data, USB data, and network control data. do. It also includes a link management layer and a network management layer for management of AV links and management of networks based on AV links.
- the switch device includes a video switch layer, an audio switch layer, an Ethernet switch instrumentation, and a data switch layer to perform the switching of the link layer described above.
- the video switch layer and the audio switch layer determine a source address and a destination address of the link layer based on the depacketization result of the concurrency data packetization / depacketization layer, and based on the determination result. Perform switching.
- the Ethernet switch layer and the data switch layer determine the source address and the destination address of the link layer based on the depacketization result of the asynchronous data packetization / depacketization layer, and perform switching based on the determination result.
- the physical layer 330 is a layer that converts data of the link layer 320 into physical signals for transmission over a cable.
- the source device, the switch device and the sink device all include a physical layer 330 and include an AV connector, a physical transport layer for data transmission, and a physical reception layer for data reception.
- the concurrency data packetization / depacketization layer or asynchronous data packetization / depacketization layer of the link layer 320 delivers the packetized data to the link transport layer, and the link transport layer multiplexes the packetized data. It may be delivered to the physical layer 310.
- the AV link according to the present invention may include a plurality of sublinks for spatial division duplex, and the AV cable may include a plurality of spatially separated lanes corresponding to the plurality of sublinks. Accordingly, the link transport layer may multiplex packetized data, allocate the packetized data to each lane, and then deliver the packetized data to the plurality of physical transport layers corresponding to the plurality of lanes, respectively.
- data received by the plurality of physical reception layers corresponding to the plurality of lanes is transmitted to the link reception layer, and the link reception layer demultiplexes the data received from the plurality of physical reception layers to form concurrency data. It can be passed to the / depacketization layer or asynchronous data packetization / depacketization layer.
- the concurrency data packetization / depacketization layer or the asynchronous data packetization / depacketization layer may depacketize and forward the received data to the application layer 310 or to the switch layers.
- Transmission and reception of data according to the network hierarchy shown in FIG. 3 is performed based on addresses assigned to respective devices in the AV network. Each device is assigned a predetermined address to identify devices connected via the AV interface, and data transmission and reception are performed based on the assigned address.
- the AV receiver 152 of room 1 110 of FIG. 1 transmits AV data to the TV 156 of room 4 140
- the AV receiver 152 of room 1 110 In the AV network an address assigned to the AV receiver 152 is set as a source address, and an address assigned to the TV 156 is set as a destination address to generate a transmission unit.
- the generated transmission unit is a transmission unit generated according to a protocol defining an AV interface as a transmission unit of an AV network.
- the allocation of the address of the AV network may be performed by one device (hereinafter, referred to as 'coordinator') that performs network management according to a centralized control scheme.
- the coordinator updates the AV network address to inform all devices of the AV network.
- An updated AV network address may be included in a message periodically transmitted for network management.
- An identifier corresponding to each of the devices included in the AV network and an assigned AV network address are 1: 1 corresponded, and a message including information on the correspondence between the identifier and the AV network address is sent to the devices of the AV network. Can be sent periodically.
- the AV network address is an example of network information managed by the coordinator, and all information necessary for maintaining the AV network and performing data transmission between devices of the AV network may be network information periodically transmitted by the coordinator.
- the coordinator When two or more devices are connected to form a network, one of them should serve as the coordinator described above.
- a plurality of networks each having a coordinator are merged to form a single network, only one of the coordinators before the merge is to be selected as the coordinator of the merged network. Accordingly, a method for selecting one of a plurality of devices included in a network as a coordinator is needed, and a method for selecting a coordinator will be described in detail with reference to the accompanying drawings.
- the messages transmitted and received to select the coordinator may be the above-described message of the link layer 320.
- FIG. 4 illustrates a device connection according to an embodiment of the present invention.
- the first device 410 and the second device 420 establish a new connection 400 to form a network.
- the new connection may be a connection based on an AV interface according to the present invention.
- one of the two devices 410 and 420 is determined as the coordinator of the newly formed network. It determines which of the first device 410 and the second device 420 is more suitable as a coordinator, and determines the coordinator based on the determination result. For example, when the first device 410 has a function of performing a coordinator and the second device 420 does not have a corresponding function, the first device 410 should determine the first device 410 as a coordinator. .
- the first device 410 and the second device 420 include information including at least one item for determining whether the device is suitable as a coordinator (hereinafter referred to as 'information about coordinator performance'). ) And the coordinator is determined based on the information on the exchanged coordinator performance, which will be described in detail with reference to FIG. 5.
- FIG. 5 is a flowchart illustrating a method of determining a coordinator according to an embodiment of the present invention.
- the first device 410 and the second device 420 establish a connection.
- a link between the first device 410 and the second device 420 may be established.
- the link may be an AV link based on the AV interface according to the invention. If the AV link includes the plurality of sublinks described above, and the plurality of sublinks include a plurality of lanes that are spatially separated, at least one lane of the plurality of lanes is the first device 410 and the second device ( 420 may be allocated for data transmission between.
- the information transmission period may be initialized for synchronization of the information transmission / reception period.
- the first device 410 and the second device 420 exchange information on the coordinator performance.
- the information on the coordinator performance includes information on at least one item for determining whether the first device 410 and the second device 420 are suitable as coordinators as described above.
- the first device 410 receives information about the coordinator performance of the second device 420 from the second device 420, and the second device 420 receives information about the coordinator performance of the first device 410. Received from the first device 410.
- Information on coordinator performance will be described in more detail with reference to FIGS. 6A-6E and 7.
- 6A-6E illustrate coordinator selection criteria according to one embodiment of the invention.
- a device A 601 having a function of serving as a coordinator with reference to information on coordinator performance may be used as a coordinator. It is desirable to decide.
- the switch device 603 it is desirable to determine the switch device 603 relaying data between device A 604 and device B 605 as the coordinator. As shown in FIG. 1, a switch device that relays data between devices is more likely to be directly connected with more devices. Therefore, it is desirable to determine the function of relaying data among the plurality of devices, that is, the switch device 603 having the switch function as the coordinator.
- FIG. 6C illustrates a case where the criterion for selecting a coordinator is the number of devices directly connected to each device.
- the switch device B It is preferable to determine 607) as the coordinator.
- switch device A 606 and switch device B 607 are variable. For example, in the example shown in FIG. 6C, when device C 610 and device D 611 are powered off and leave the network, only one device 612 is connected to switch device B 706. It becomes.
- the coordinator may be determined based on the number of ports. If the number of ports of the switch device B 607 is larger than the number of ports of the switch device A 606, it is preferable to determine the switch device B 607 as the coordinator.
- the maximum hop may be considered as a criterion for determining the coordinator.
- the maximum hop of switch device A 613 is '2'. This is because the hops from the switch device A 613 to the device B 617, the device C 618, the device D 619, or the device E 620 are all '2'.
- the maximum hop of switch device B 614 and switch device C 615 is '3'. The hop from switch device B 614 to device D 619 or device E 620 is' 3 'and the hop from switch device C 615 to device B 617 or device C 618 is' 3 '.
- the smaller the maximum hop the smaller the number of switch devices that the hop has to access in order to access the largest device, and thus the switch device A 613 with the smallest maximum hop can be determined as the coordinator.
- the smaller the maximum hop the faster network information that is periodically sent to manage the network can be sent to all devices in the network, so that the coordinator can be determined based on the maximum hop.
- the home switch device 621 connects a home network formed based on an AV interface with an external network (for example, the Internet), such as the AV link home switch 151 of FIG. 1, and transmits data between a plurality of rooms. Relay. Accordingly, the home switch device 621 is likely to maintain the always-on state, and if the device having a high possibility of maintaining the always-on state is determined as the coordinator, frequent change of the coordinator can be avoided. In short, whether or not the device is in an always-connected state may be a criterion for determining the coordinator.
- information about coordinator performance exchanged between the first device 410 and the second device 420 corresponds to the plurality of criteria described with reference to FIGS. 6A through 6E. It may include at least one of a plurality of items to be.
- the information on the coordinator performance exchanged between the first device 410 and the second device 420 in step 520 may include at least one of an IC item, an SC item, an AO item, an NP item, and an MHC item. It may include.
- the IC item is an item indicating whether the IC item has a function of acting as a coordinator. IC items may be represented by one bit. If the IC item is set to "1", it means that the coordinator function is provided. If the IC item is set to "0", it means that the IC item is not provided.
- the SC item is an item indicating whether the switch device relays data.
- the SC item may be represented by one bit. If the SC item is set to "1", it means that it is a switch device. If the SC item is set to "0", it means that it is not a switch device.
- the AO item is an item indicating whether the device is in the always-connected state.
- the AO item may also be represented by one bit. If the AO item is set to "1", it means that the device maintains an always connected state. If the AO item is set to "0", it means that the device does not maintain an always connected state.
- the NP item is an item about the number of ports.
- the NP item may be represented by a plurality of bits, and the number of ports held by the corresponding device may be included in the NP item.
- the * MHC item is for the maximum hop.
- the MHC item may also be indicated by a plurality of bits, and information on the maximum hop among hops from the corresponding device to other devices is included in the MHC item.
- the first device 410 may use the first device 410 or the second device 420 based on the information about the coordinator performance of the second device 420 received in operation 520. Determine as the coordinator. The first device 410 compares the information on the coordinator performance of the second device 420 received in step 520 with the information on the coordinator performance of the first device 410 to determine a more suitable device as the coordinator.
- a plurality of items may be compared in a predetermined order. For example, if the first device 410 or the second device 420 is determined as a coordinator by first comparing the IC items of FIG. 7, other items may not be compared. Only when the IC items are the same, the coordinator may be determined by comparing the SC items and the AO items in order, and the coordinator may be determined by comparing the NP items and the MHC items only when the IC items, the SC items and the AO items are the same.
- the second device 420 is determined as a coordinator.
- the second device 420 may transmit the first device 410 or the second device 420 based on the information about the coordinator performance of the first device 410 received from the first device 410 in operation 520. Determine as the coordinator.
- a suitable device is determined as the coordinator. Since the coordinator is determined in the same manner as in step 530, the determination result of step 530 and the determination result of step 540 are the same.
- the first device 410 transmits a management message in step 550.
- the management message including information on the address allocated to the second device 420 may be transmitted to the second device 420.
- 5 illustrates an example in which the first device 410 is determined to be a coordinator.
- the second device 420 is determined to be a coordinator, The device 420 sends a management message.
- the management message may include network information for managing the network, and the first device 410 may periodically transmit the management message.
- Network information included in the management message is a plurality of devices 410 and 420 are connected to the information on the identifier (identifier) of the newly formed network, the identifier for each of the plurality of devices and assigned to each of the plurality of devices in the newly formed network It may include at least one of information on a correspondence relationship between addresses, information on types of a plurality of devices, information on an identifier of a coordinator, and information indicating that the first device 410 is a coordinator.
- the information on the identifier of the network includes information for distinguishing a network formed by connecting the first device 410 and the second device 420 from other networks, as shown in FIG. 4.
- the identifier for each of the plurality of devices is information for identifying each of the plurality of devices and may be a universally unique identifier (UUID), a globally unique identifier (GUID), or a serial number.
- UUID universally unique identifier
- GUID globally unique identifier
- serial number a serial number.
- a static address unique to the first device 410 and the second device 420 may be used as an identifier for each of the first device 410 and the second device 420.
- a unique address assigned at the time of manufacture of the first device 410 and the second device 420, such as the MAC address of the first device 410 and the second device 420, may be used as an identifier for each of the plurality of devices. Can be.
- the information on the type is information indicating which type of the above-described source / leaf device, source / switch device, switch device, sink / switch device, and sink / leaf device, each of the plurality of devices included in the network. to be.
- the address assigned to each of the plurality of devices and the information about the device type are 1: 1 corresponded and included in the management message.
- the information on the identifier of the coordinator is information for identifying a device determined as the coordinator.
- the unique address of the device determined as the coordinator may be used as an identifier of the coordinator.
- the management message transmitted by the first device 410 may be a message periodically indicating its existence (hereinafter, referred to as a "periodic message").
- Devices 410 and 420 included in the network may maintain the network by sending periodic messages to other devices in the network, each of which includes information about the address assigned to the device, its identifier and device type.
- the management message transmitted by the first device 410 may be one of periodic messages transmitted by devices of such a network.
- the periodic message may include information indicating that the first device 410 is a coordinator.
- FIG. 8 is a flowchart illustrating a method of determining a coordinator according to another embodiment of the present invention.
- FIG. 8 illustrates a method of determining a coordinator when the first device 410 and the second device 420 are connected to form a network, as shown in FIG. 4.
- the first device 410 establishes a connection. Corresponds to step 510 of FIG. 5.
- the first device 410 and the second device 420 respectively request an association from the counterpart device.
- a request is made to join the counterpart device through the link established in step 810.
- the association must be completed in order to receive an address and to transmit and receive data in a network.
- the first device 410 and the second device 420 assigns an address as a coordinator, in step 812 and 814 the first device 410 and the second device 420 are the other party, respectively. Request a join to the device.
- the messages sent in step 812 and 814 to request joining include information about the coordinator capabilities.
- the association request message transmitted by the second device 420 may include information about the coordinator performance of the second device 420.
- the association request message transmitted by the first device 410 may be a first request. It includes information about the coordinator performance of the device 410.
- the association request message transmitted by the second device 420 may be transmitted.
- the association request message transmitted may include information about an identifier of the second device 420, as well as information on the coordinator performance of the second device 420. 2 may further include information about the type of device 420. The information on the identifier of the second device 420 may be information about the unique address of the second device 420 as described above.
- the association request message transmitted by the second device 420 may include information about an address temporarily assigned to the second device 420 before the association is completed. . Before the combining is completed, information about the temporary address allocated by the second device 420 by itself may be included in the combining request message transmitted to the first device 410.
- the association request message transmitted by the first device 410 may be transmitted.
- the association request message transmitted may include information about the coordinator performance of the first device 410, as well as information about an identifier of the first device 410. 1 may further include information about the type of device 410.
- the first device 410 may include information about a temporary address allocated by itself before the coupling is completed.
- steps 816 and 818 the first device 410 and the second device 420 determine the coordinator, respectively. Steps 816 and 818 correspond to steps 530 and 540, respectively.
- the first device 410 determines the coordinator based on the information on the coordinator performance of the second device 420 included in the association request message received in operation 812.
- the coordinator is determined by comparing the information on the coordinator performance of the second device 420 included in the association request message received in step 812 with the information on the coordinator performance of the first device 410.
- the second device 420 determines the coordinator based on the information on the coordinator performance of the first device 410 included in the association request message received in operation 814.
- the coordinator is determined by comparing the information about the coordinator performance of the first device 410 included in the association request message received in operation 814 with the information about the coordinator performance of the second device 420.
- the first device 410 announces to the second device 420 that it is the coordinator.
- the first device 410 when the first device 410 is determined to be the coordinator, the first device 410 generates a message informing that the coordinator is the coordinator and transmits the message to the second device 420.
- the notification message transmitted in operation 820 may include information on at least one of information about an identifier of a network, a unique address of a coordinator, and an identifier of a coordinator.
- Step 820 illustrates the case in which the first device 410 is determined to be the coordinator in steps 816 and 818.
- the device 410 transmits a message notifying that it is the coordinator.
- the second device 420 requests the first device 410 to join.
- the association request message sent by the second device 420 in step 822 is the same as in step 812, except that the coordinator transmits after the coordinator is determined in steps 816 and 818.
- the message transmitted by the second device 420 in step 822 may include information about the coordinator performance of the second device 420, as well as information about the identifier of the second device 420, and the second message. It may include information about the type of device 420 and information about an address temporarily assigned to the second device 420 before the coupling is completed.
- the first device 410 transmits a response message to the association request message of operation 822.
- At least one of information on an identifier of a network and information on an address allocated to the second device 420 may be included.
- the first device 410 transmits a management message.
- a management message including network information for managing the network is transmitted.
- the management message transmitted by the first device 410 may be the aforementioned periodic message. Corresponds to step 550 of FIG. 5.
- FIG 9 illustrates a device connection according to another embodiment of the present invention.
- FIG. 9 illustrates a case where a second device 920 newly joins a network 910 formed by connecting a first device 912 and a plurality of devices 914 and 916.
- the new connection 900 may be a connection based on an AV interface according to the present invention.
- the first device 912 serves as a coordinator.
- the second device 920 is more suitable as a coordinator than the first device 912, after joining the second device 920, the second device 920 preferably serves as a coordinator. Accordingly, the first device 912 and the second device 920 exchange information about the coordinator performance to determine the coordinator, which will be described in detail with reference to FIGS. 10 and 11.
- FIG. 10 is a flowchart for explaining a method of determining a coordinator according to another embodiment of the present invention.
- the first device 912 and the second device 920 establish a connection.
- a link between the first device 912 and the second device 920 may be established as establishing a physical connection between the first device 912 and the second device 920.
- Step 1010 is performed when the first device 912 is directly connected to the second device 920.
- the second device 920 may not be directly connected to the first device 912 but may be connected to another device 914 or 916 of the network 910.
- a step 1010 is performed with the corresponding device 914 or 916 to establish a connection.
- the first device 912 and the second device 920 exchange information about the coordinator performance.
- the information on the coordinator performance includes information on at least one item for determining whether the first device 912 and the second device 920 are suitable as coordinators as described above.
- the first device 912 receives information about the coordinator performance of the second device 920 from the second device 920, and the second device 920 receives information about the coordinator performance of the first device 912. Receive from the first device 912.
- Information on coordinator performance has been described above with reference to FIGS. 6A-6E and 7.
- the first device 912 determines the first device 912 or the second device 920 as a coordinator based on the information about the coordinator performance of the second device 920 received in operation 1020.
- the first device 912 compares the information about the coordinator performance of the second device 920 received in step 1020 with the information about the coordinator performance of the first device 912 to determine a more suitable device as the coordinator.
- Step 1030 corresponds to step 530 of FIG. 5 and step 816 of FIG. 8.
- step 1030 despite the new subscription of the second device 920, if the first device 912 is more suitable for the coordinator than the second device 920, and the first device 912 is determined to be the coordinator The first device 912 continues to act as a coordinator and transmits a management message to the second device 920 including information about an address assigned to the second device 920.
- step 1030 when the determination of step 1030 indicates that the second device 920 is more suitable for the coordinator than the first device 912, and the second device 920 is determined to be the coordinator, steps 1040 and 1050 are performed.
- the first device 912 hands over the role of the coordinator to the second device 920.
- the first device 912 transmits a message to the second device 920 requesting to serve as a coordinator, and the second device 920 transmits a response message thereto, thereby performing a handover.
- the second device 920 transmits a management message including network information as the coordinator to the first device 912.
- the management message transmitted in step 1050 may include the information indicating that the second device 920 is a new coordinator as the above-described periodic message.
- FIG. 11 is a flowchart illustrating a method of determining a coordinator according to another embodiment of the present invention.
- the first device 912 and the second device 920 establish a connection.
- step 1010 of FIG. 10 If the second device 920 and the first device 912 are not directly connected, and the other device 914 or 916 and the second device 920 of the network 910 are connected, the corresponding device 914 or 916. And step 1110 to establish a connection.
- the second device 920 requests the first device 912 to join.
- the first device 912 is requested to join through the link established in operation 1110. Since the first device 912 assigns an address as a coordinator of the network 910, it requests the first device 912 to join.
- the message sent by the second device 920 to request joining includes information about the coordinator capabilities of the second device 920.
- the coordinator of the network 910 from the connected device 914 or 916.
- Receiving information about the first device 912 for example, information about an address, an identifier, etc. of the first device 912 in the network 910), and based on the received information, the first device 912.
- the first device 912 transmits a response message to the association request message in operation 1112.
- the response message may include information about an identifier of the network and information about an address assigned to the second device in the network 910.
- the first device 912 determines the first device 912 or the second device 920 as a coordinator based on the information about the coordinator performance of the second device 920 received in operation 1112.
- the first device 912 compares the information about the coordinator performance of the second device 920 received in step 1112 with the information about the coordinator performance of the first device 912 to determine a more suitable device as the coordinator.
- Step 1116 corresponds to step 1030 of FIG. 10.
- step 1116 despite the new subscription of the second device 920, if the first device 912 is more suitable for the coordinator than the second device 920, the first device 912 continues to the coordinator. Play a role. However, if it is determined in step 11116 that the second device 920 is more suitable for the coordinator than the first device 912, and the second device 920 is determined to be the coordinator, steps 1118 to 1124 are performed.
- the first device 912 hands over the role of the coordinator to the second device 920.
- the first device 912 transmits a message requesting to perform the role of the coordinator, that is, a handover request message to the second device 920, and in operation 1120, the second device 920 responds thereto.
- Message that is, handover response message.
- the second device 920 informs the devices of the network 910 that it is the coordinator of the network 910 at step 1122, and the second device 920 is the coordinator at step 1124.
- the management message transmitted in operation 1124 may include the information indicating that the second device 920 is a coordinator as the above-described periodic message.
- the first device 912 or another device 914 or 916 may be obtained by sharing information about a plurality of devices included in the network, and may transmit a management message based on the obtained information.
- FIG. 12 illustrates a device connection according to another embodiment of the present invention.
- FIG. 12 illustrates a case where a first network 1210 in which the first coordinator 1212 is a coordinator and a second network 1220 in which the second coordinator 1222 is a coordinator are merged.
- a new connection 1200 is established between the first device 1214 of the first network 1210 and the second device 1224 of the second network 1220 to form a merged network.
- the new connection 1200 may be a connection based on an AV interface according to the present invention.
- Coordinators 1212 and 1222 exist in the first network 1210 and the second network 1220 before merging, respectively. However, since one coordinator must manage the network after merging, one of the first coordinator 1212 and the second coordinator 1222 should be determined as the coordinator of the merged network. To this end, one of the first device 1214 and the second device 1224, which is involved in the connection 1200 that is the basis of the network merge, determines one of the two coordinators 1212 and 1222 as the coordinator of the merged network. . This will be described in more detail with reference to FIGS. 13 and 14.
- FIG. 13 is a flowchart illustrating a method of determining a coordinator according to another embodiment of the present invention.
- the first device 410 and the second device 420 establish a connection.
- a link between the first device 410 and the second device 420 may be established.
- the first device 1214 receives information about the coordinator performance of the first coordinator 1212 in step 1320, and receives information about the coordinator performance of the second coordinator 1222 in step 1330.
- FIG. 13 illustrates how the first device 1214 determines the coordinator of the merged network.
- the information on the coordinator performance required for the coordinator determination may be determined by the first coordinator 1212 and the second coordinator 1212 and 1330. 1222).
- the second device 1224 may determine the coordinator of the merged network.
- a device that first receives a periodic message may determine the coordinator.
- the second device 1224 sends a message to announce its presence in the network prior to the first device 1214 over the newly established connection 1200, and the first device 1214 sends this period. If a message has been received, the first device 1214 may be selected as the device for determining the coordinator of the merged network.
- the first device 1214 receives information about the coordinator performance of the first coordinator 1212 through a connection in the first network 1210, and newly establishes information about the coordinator performance of the second coordinator 1222. Receive over connection 1200.
- the first device 1214 may determine the first coordinator (based on the information on the performance of the coordinator of the first coordinator 1212 and the information on the coordinator performance of the second coordinator 1222) received in operations 1320 and 1330. 1212) or determine the second coordinator 1222 as the coordinator of the merged network.
- the first device 1214 notifies the first coordinator 1212 and the second coordinator 1222 of the determination result of step 1340.
- the determination result may be notified to the first coordinator 1212 and the second coordinator 1222, and the decision result is notified only to the device determined as the coordinator of the merged network among the first coordinator 1212 and the second coordinator 1222. It may be.
- the coordinator of the merged network transmits a management message including network information to devices of the merged network in steps 1360 and 1370.
- the management message may be a message indicating that the identifier and the coordinator of the device determined as the coordinator as the aforementioned periodic message.
- FIG. 14 is a flowchart illustrating a method of determining a coordinator according to another embodiment of the present invention.
- the first device 1214 and the second device 1224 establish a connection. It corresponds to step 1310 of FIG.
- the first device 1214 requests information about the coordinator performance from the first coordinator 1212 and the second coordinator 1222.
- FIG. 14 illustrates a method of determining a coordinator of a merged network by the first device 1214 as shown in FIG. 13. Accordingly, the first device 1214 requests information about the coordinator performance from the first coordinator 1212 and the second coordinator 1222.
- the second device 1224 may determine the coordinator of the merged network instead of the first device 1214.
- the first device 1214 receives information about coordinator performance from the first coordinator 1212 and the second coordinator 1222. Receive information about the coordinator capabilities in response to the requests of steps 1412 and 1414.
- the first device 1214 determines the first coordinator 1212 or the second coordinator 1222 as the coordinator of the merged network based on the information about the coordinator performance in steps 1416 and 1418. Once the coordinator of the merged network is determined, in steps 1420 through 1426, the first device 1214 notifies the first coordinator 1212 and the second coordinator 1222 of the decision result.
- the first device 1214 requests network coordination from the first coordinator 1212 and the second coordinator 1222.
- the message requesting the network merge includes an identifier of the merged network, an identifier of the coordinator of the merged network, and the like.
- the identifier of the coordinator of the merged network may be a unique address of the device determined as the coordinator.
- the unique address of the device determined as the coordinator of the merged network among the unique addresses of the first coordinator 1212 and the second coordinator 1222 is the first coordinator 1212 and the second coordinator 1222 in steps 1420 and 1422. It may be included in the message requesting the network merge sent to.
- the first coordinator 1212 and the second coordinator 1222 send a response message to the first device 1214 in response to the message requesting the network merge.
- the first device 1214 is notified that it has received a message requesting a network merge, and a response message indicating that it is ready to perform the network merge is sent to the first device 1214 in steps 1424 and 1426.
- first coordinator 1212 notifies devices of the merged network that it has been determined to be the coordinator of the merged network.
- the second coordinator 1222 who was the coordinator of the second network 1220 before the merge, requests the first coordinator 1212 to update the network information in step 1430,
- the first coordinator 1212 transmits a response message to the request message of operation 1430 to the devices of the merged network.
- Information on the identifier of the merged network, information on the correspondence between the identifier for each of the plurality of devices and the address assigned to each of the plurality of devices in the newly formed network, information on the types of the plurality of devices, and identifiers of the coordinator. Information may be included in the response message.
- the first coordinator 1212 transmits a management message including network information to devices included in the network as a coordinator of the merged network.
- the management message may include the information indicating that the first coordinator 1212 is a coordinator of the merged network as the aforementioned periodic message.
- FIG. 15 illustrates a coordinator determination apparatus according to an embodiment of the present invention.
- the coordinator determination apparatus 1500 includes a connection unit 1510, a coordinator manager 1520, and a network manager 1530.
- the coordinator determination apparatus 1500 of FIG. 15 is an apparatus included in the first device 410 of FIG. 4, the first device 912 of FIG. 9, or the first device 1214 of FIG. 12 will be described first.
- the connector 1510 establishes a new connection with another device through a predetermined interface.
- the connector 1510 may establish a new link with the coordinator second device 420 of the first device 410.
- connection unit 1510 may establish a new link with the second device 920 newly joined to the network.
- another device 914 or 916 directly connected to the second device 920 may be newly connected with the second device 920. Set up the link.
- the connector 1510 may establish a new link with the second device 1214 included in the second network 1220.
- the coordinator manager 1520 determines the coordinator. The coordinator is determined based on the information about the coordinator performance.
- the coordinator manager 1520 receives information on the coordinator performance from the second device 420, receives information on the coordinator performance of the first device 410, and receives the received second device 420.
- the first device 410 or the second device 420 is determined as a coordinator by comparing the information about the coordinator performance of the "
- the coordinator manager 1520 receives information on the coordinator performance from the second device 920, receives information on the coordinator performance of the first device 912, and receives the received second device 420.
- the first device 912 or the second device 420 is determined as the coordinator by comparing the information about the coordinator performance of the " If the first device 912 that was the coordinator before joining the second device 420 is determined to be the coordinator, the first device 912 continues to serve as the coordinator. However, when the second device 920 newly joined to the network is determined to be the coordinator, the second device 920 hands over the role of the coordinator.
- the handover request message is transmitted to the second device 920, and a response message is received from the second device 920.
- the coordinator manager 1520 receives information on the coordinator performance from the first coordinator 1212 of the first network 1210 and includes a second network in which the second device 1224 is included. Information about the coordinator performance is received from the second coordinator 1222 at 1220. Then, the coordinator manager 1520 compares the received information of the coordinator performance of the first coordinator 1212 and the information of the coordinator performance of the second coordinator 1222 to compare the first coordinator 1212 or the second coordinator ( 1222 is determined as the coordinator of the merged network. When the coordinator is determined, at least one of the first coordinator 1212 and the second coordinator 1222 is notified of the determination result.
- the network manager 1530 performs a role of coordinator based on the determination result of the coordinator manager 1520.
- the management message including the network information is transmitted to at least one device included in the network.
- the network manager 1530 notifies the second device 420 that the first device 410 is determined to be a coordinator. In addition, as the second device 420 transmits a message requesting joining, the joining response message is transmitted to the second device 420 to complete the joining. In addition, the network manager 1530 may periodically transmit a management message including network information.
- the network manager 1530 performs the same operations as the embodiment shown in FIG. 4. In other words, the connection with the second device 920 may be completed and the management message may be periodically transmitted.
- the network manager 1530 receives a message notifying that the second device 920 is the coordinator from the second device 920 without performing an operation as a coordinator, and periodically transmitting the second device 920. Receive a management message.
- the first device 1214 does not act as a coordinator in the merged network. Accordingly, the network manager 1530 of the first device 1214 receives a message notifying that the coordinator is from the device determined as the coordinator of the merged network among the first coordinator 1212 and the second coordinator 1222, and from the corresponding device. Management messages can be received periodically.
- the coordinator determination apparatus 1500 of FIG. 15 is an apparatus included in the second device 420 of FIG. 4, the second device 920 of FIG. 9, or the second device 1224 of FIG. 12 will be described.
- the connection unit 1510, the coordinator manager 1520, and the network manager 1530 are included in the first device 410. Symmetrically. In other words, the connection unit 1510 establishes a connection with the first device 410, and the coordinator manager 1520 receives information on the coordinator performance of the first device 410, and based on the received information, If the second device 420 is determined to be a coordinator, the network manager 1530 may serve as a coordinator.
- the connection unit 1510, the coordinator manager 1520, and the network manager 1530 are included in the first device 912. Symmetrically.
- the connection unit 1510 establishes a connection with the first device 912 or another device 914 or 916, and the coordinator manager 1520 provides information about the coordinator performance of the second device 920 with the first device 912. To transmit.
- the network manager 1530 receives a message and a management message notifying that the coordinator is from the first device 912.
- the network manager 1530 receives a handover request message from the first device 912 and the second device. The message 920 notifies the coordinator is transmitted to the first device 912.
- the connection unit 1510, the coordinator manager 1520, and the network manager 1530 are included in the first device 1214. Symmetrically.
- the connection unit 1510 establishes a connection with the first device 1214, and the coordinator manager 1520 transmits information on the coordinator performance of the second device 920 to the first device 1214.
- the coordinator manager 1520 relays information on the coordinator performance of the second coordinator 1222 to the first device 1214, and relays the coordinator determination result of the first device 1214 to relay the second coordinator 1222.
- the network manager 1530 receives a message notifying that the coordinator is from the device determined as the coordinator of the merged network among the first coordinator 1212 and the second coordinator 1222, and also receives a management message from the corresponding device.
- FIG. 16 illustrates a coordinator determination apparatus according to another embodiment of the present invention.
- FIG. 16 is included in the first coordinator 1212 or the second coordinator 1222 in the embodiment shown in FIG. 12 to transmit information about coordinator performance to the first device 1214, and A device for performing the role of coordinator according to the decision result is shown.
- the coordinator determining apparatus 1600 includes a coordinator manager 1610 and a network manager 1620.
- the coordinator manager 1610 transmits information on the coordinator performance to the first device 1214 that has established the connection 1200 that is the basis of the network merge.
- the coordinator determining apparatus 1600 transmits information about the coordinator performance of the first coordinator 1212 to the first device 1214 and is included in the second coordinator 1222. In this case, information about the coordinator performance of the second coordinator 1222 is transmitted to the first device 1214.
- the network manager 1620 receives the coordinator determination result from the first device 1214 and performs a role of the coordinator based on the received result.
- the first device 1214 determines the first coordinator 1212 or the second coordinator 1222 as the coordinator of the merged network
- the first device 1214 serves as the coordinator based on the determination result. If it is not determined as a coordinator, a message notifying that the coordinator is received from the device determined as the coordinator is received, and a management message including network information is also received.
- a coordinator determination apparatus includes a bus coupled to respective units of the apparatus as shown in FIGS. 15 and 16, and at least one processor coupled to the bus. can do. It may also include a memory coupled to the bus for storing instructions, received messages or generated messages and coupled to at least one processor for performing instructions as described above.
- the computer-readable recording medium also includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of the recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device and the like.
- the computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.
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Abstract
Description
Claims (15)
- 제1 디바이스가 네트워크를 관리하는 코디네이터(coordinator)를 결정하는 방법에 있어서,제2 디바이스와의 연결을 성립시키는 단계;상기 제2 디바이스로부터 상기 제2 디바이스의 코디네이터 성능(capability)에 대한 정보를 수신하는 단계; 및상기 제1 디바이스의 코디네이터 성능에 대한 정보와 상기 제2 디바이스의 코디네이터 성능에 대한 정보를 비교하여 상기 제1 디바이스 또는 상기 제2 디바이스를 상기 코디네이터로 결정하는 단계를 포함하고,상기 코디네이터 성능에 대한 정보는 해당 디바이스가 코디네이터로 적합한 디바이스인지 판단하기 위한 적어도 하나의 항목에 대한 정보를 포함하는 것을 특징으로 하는 코디네이터 결정 방법.
- 제 1 항에 있어서, 상기 적어도 하나의 항목은해당 디바이스가 코디네이터의 역할을 수행할 수 있는 디바이스인지 나타내는 항목을 포함하는 것을 특징으로 하는 코디네이터 결정 방법.
- 제 2 항에 있어서, 상기 적어도 하나의 항목은해당 디바이스가 상기 네트워크의 디바이스들 사이에서 데이터를 중계하는 스위치 디바이스인지 나타내는 항목 및 해당 디바이스가 상시 접속(always ON) 상태의 디바이스인지 나타내는 항목을 더 포함하는 것을 특징으로 하는 코디네이터 결정 방법.
- 제 3 항에 있어서, 상기 적어도 하나의 항목은해당 디바이스가 보유하고 있는 포트의 개수에 대한 항목 및 해당 디바이스에 연결된 다른 디바이스와의 최대 홉(hop)에 대한 항목을 더 포함하는 것을 특징으로 하는 코디네이터 결정 방법.
- 제 1 항에 있어서, 상기 제1 디바이스 또는 상기 제2 디바이스를 상기 코디네이터로 결정하는 단계는상기 제1 디바이스의 코디네이터 성능에 대한 정보와 상기 제2 디바이스의 코디네이터 성능에 대한 정보를 비교한 결과, 상기 제2 디바이스가 상기 코디네이터로 더 적합하면, 상기 제2 디바이스를 상기 코디네이터로 결정하는 단계를 포함하는 것을 특징으로 하는 코디네이터 결정 방법.
- 제 5 항에 있어서,상기 제1 디바이스가 상기 제2 디바이스와 연결되기 이전에 상기 제1 디바이스가 포함된 네트워크의 코디네이터이면, 상기 코디네이터의 역할을 상기 제2 디바이스에 핸드오버(handover)하는 단계를 더 포함하는 것을 특징으로 하는 코디네이터 결정 방법.
- 제 1 항에 있어서, 상기 제1 디바이스 또는 상기 제2 디바이스를 상기 코디네이터로 결정하는 단계는상기 제1 디바이스의 코디네이터 성능에 대한 정보와 상기 제2 디바이스의 코디네이터 성능에 대한 정보를 비교한 결과, 상기 제1 디바이스가 상기 코디네이터로 더 적합하면, 상기 제1 디바이스를 상기 코디네이터로 결정하는 단계를 포함하는 것을 특징으로 하는 코디네이터 결정 방법.
- 제 7 항에 있어서,상기 제1 디바이스가 상기 코디네이터임을 상기 네트워크의 디바이스들에 통보(announce)하는 단계를 더 포함하는 것을 특징으로 하는 코디네이터 결정 방법.
- 제1 디바이스가 네트워크를 관리하는 코디네이터(coordinator)를 결정하는 방법에 있어서,제2 디바이스와의 연결을 성립시키는 단계;상기 연결 전에 상기 제1 디바이스가 포함되어 있던 제1 네트워크의 제1 코디네이터로부터 코디네이터 성능(capability)에 대한 정보를 수신하는 단계;상기 연결 전에 상기 제2 디바이스가 포함되어 있던 제2 네트워크의 제2 코디네이터로부터 코디네이터 성능(capability)에 대한 정보를 수신하는 단계; 및상기 제1 코디네이터의 코디네이터 성능에 대한 정보와 상기 제2 코디네이터의 코디네이터 성능에 대한 정보를 비교하여 상기 제1 코디네이터 또는 상기 제2 코디네이터를 상기 제1 네트워크 및 상기 제2 네트워크가 병합(merge)된 네트워크의 코디네이터로 결정하는 단계를 포함하고,상기 코디네이터 성능에 대한 정보는 해당 디바이스가 코디네이터로 적합한 디바이스인지 판단하기 위한 적어도 하나의 항목에 대한 정보를 포함하는 것을 특징으로 하는 코디네이터 결정 방법.
- 제 9 항에 있어서, 상기 적어도 하나의 항목은해당 디바이스가 코디네이터의 역할을 수행할 수 있는 디바이스인지 나타내는 항목을 포함하는 것을 특징으로 하는 코디네이터 결정 방법.
- 제 10 항에 있어서, 상기 적어도 하나의 항목은해당 디바이스가 상기 네트워크의 디바이스들 사이에서 데이터를 중계하는 스위치 디바이스인지 나타내는 항목 및 해당 디바이스가 상시 접속(always ON) 상태의 디바이스인지 나타내는 항목을 더 포함하는 것을 특징으로 하는 코디네이터 결정 방법.
- 제 11 항에 있어서, 상기 적어도 하나의 항목은해당 디바이스가 보유하고 있는 포트의 개수에 대한 항목 및 해당 디바이스에 연결된 다른 디바이스와의 최대 홉(hop)에 대한 항목을 더 포함하는 것을 특징으로 하는 코디네이터 결정 방법.
- 네트워크를 관리하는 코디네이터(coordinator)를 결정하는 제1 디바이스의 장치에 있어서,제2 디바이스와의 연결을 성립시키는 연결부; 및상기 제2 디바이스로부터 상기 제2 디바이스의 코디네이터 성능(capability)에 대한 정보를 수신하고, 상기 제1 디바이스의 코디네이터 성능에 대한 정보와 상기 제2 디바이스의 코디네이터 성능에 대한 정보를 비교하여 상기 제1 디바이스 또는 상기 제2 디바이스를 상기 코디네이터로 결정하는 코디네이터관리부를 포함하고,상기 코디네이터 성능에 대한 정보는 해당 디바이스가 코디네이터로 적합한 디바이스인지 판단하기 위한 적어도 하나의 항목에 대한 정보를 포함하는 것을 특징으로 하는 코디네이터 결정 장치.
- 네트워크를 관리하는 코디네이터(coordinator)를 결정하는 제1 디바이스의 장치에 있어서,제2 디바이스와의 연결을 성립시키는 연결부; 및상기 연결 전에 상기 제1 디바이스가 포함되어 있던 제1 네트워크의 제1 코디네이터로부터 코디네이터 성능(capability)에 대한 정보를 수신하고, 상기 연결 전에 상기 제2 디바이스가 포함되어 있던 제2 네트워크의 제2 코디네이터로부터 코디네이터 성능(capability)에 대한 정보를 수신하며, 상기 제1 코디네이터의 코디네이터 성능에 대한 정보와 상기 제2 코디네이터의 코디네이터 성능에 대한 정보를 비교하여 상기 제1 코디네이터 또는 상기 제2 코디네이터를 상기 제1 네트워크 및 상기 제2 네트워크가 병합(merge)된 네트워크의 코디네이터로 결정하는 코디네이터관리부를 포함하고,상기 코디네이터 성능에 대한 정보는 해당 디바이스가 코디네이터로 적합한 디바이스인지 판단하기 위한 적어도 하나의 항목에 대한 정보를 포함하는 것을 특징으로 하는 코디네이터 결정 장치.
- 제 1 항 내지 제 12 항 중 어느 한 항의 방법을 실행하기 위한 프로그램을 기록한 컴퓨터로 읽을 수 있는 기록 매체.
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BR112012029378A BR112012029378A2 (pt) | 2010-05-19 | 2011-05-19 | método pelo qual um primeiro dispositivo elege um coordenador para gerenciar uma rede, coordenadpr elegendo dispositivo para eleger um coordenador, e meio de gravação legível por computador |
EP11783778.1A EP2562962A4 (en) | 2010-05-19 | 2011-05-19 | METHOD AND APPARATUS FOR DETERMINING A COORDINATOR |
CN201180035756.4A CN103155483B (zh) | 2010-05-19 | 2011-05-19 | 确定协调器的方法和设备 |
JP2013511117A JP2013531921A (ja) | 2010-05-19 | 2011-05-19 | コーディネータ決定方法及び装置 |
US13/681,168 US20130080615A1 (en) | 2010-05-19 | 2012-11-19 | Method and apparatus for determining a coordinator |
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US34607510P | 2010-05-19 | 2010-05-19 | |
US61/346,075 | 2010-05-19 | ||
US34658810P | 2010-05-20 | 2010-05-20 | |
US61/346,588 | 2010-05-20 | ||
KR10-2011-0045685 | 2011-05-16 | ||
KR1020110045685A KR20110127604A (ko) | 2010-05-19 | 2011-05-16 | 코디네이터 결정 방법 및 장치 |
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US13/681,168 Continuation US20130080615A1 (en) | 2010-05-19 | 2012-11-19 | Method and apparatus for determining a coordinator |
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WO2011145896A2 true WO2011145896A2 (ko) | 2011-11-24 |
WO2011145896A3 WO2011145896A3 (ko) | 2012-04-19 |
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US (1) | US20130080615A1 (ko) |
EP (1) | EP2562962A4 (ko) |
JP (1) | JP2013531921A (ko) |
KR (1) | KR20110127604A (ko) |
CN (1) | CN103155483B (ko) |
BR (1) | BR112012029378A2 (ko) |
WO (1) | WO2011145896A2 (ko) |
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US9066286B2 (en) * | 2013-03-15 | 2015-06-23 | Qualcomm Incorporated | Automatic selection of coordinating functionality in a hybrid communication network |
US9763115B2 (en) | 2014-06-02 | 2017-09-12 | Intel IP Corporation | Apparatus, system and method of performing a time of flight (ToF) measurement |
US10270610B2 (en) * | 2016-06-12 | 2019-04-23 | Apple Inc. | Selection of a coordinator device for an automated environment |
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KR100643272B1 (ko) * | 2004-04-26 | 2006-11-10 | 삼성전자주식회사 | 조정자 기반 무선 네트워크 간의 네트워크 통신 방법 및장치 |
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JP4976776B2 (ja) * | 2006-07-31 | 2012-07-18 | キヤノン株式会社 | 通信装置、通信方法、並びに当該通信方法をコンピュータに実行させるためのコンピュータプログラム |
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2011
- 2011-05-16 KR KR1020110045685A patent/KR20110127604A/ko not_active Application Discontinuation
- 2011-05-19 EP EP11783778.1A patent/EP2562962A4/en not_active Withdrawn
- 2011-05-19 JP JP2013511117A patent/JP2013531921A/ja not_active Ceased
- 2011-05-19 BR BR112012029378A patent/BR112012029378A2/pt not_active IP Right Cessation
- 2011-05-19 WO PCT/KR2011/003704 patent/WO2011145896A2/ko active Application Filing
- 2011-05-19 CN CN201180035756.4A patent/CN103155483B/zh not_active Expired - Fee Related
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2012
- 2012-11-19 US US13/681,168 patent/US20130080615A1/en not_active Abandoned
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See also references of EP2562962A4 |
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JP2013531921A (ja) | 2013-08-08 |
US20130080615A1 (en) | 2013-03-28 |
WO2011145896A3 (ko) | 2012-04-19 |
KR20110127604A (ko) | 2011-11-25 |
BR112012029378A2 (pt) | 2017-11-21 |
CN103155483B (zh) | 2016-06-01 |
EP2562962A2 (en) | 2013-02-27 |
EP2562962A4 (en) | 2016-01-20 |
CN103155483A (zh) | 2013-06-12 |
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