WO2018232961A1 - 一种结合汇聚单元信息的物联网路由表更新方法及系统 - Google Patents

一种结合汇聚单元信息的物联网路由表更新方法及系统 Download PDF

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Publication number
WO2018232961A1
WO2018232961A1 PCT/CN2017/098497 CN2017098497W WO2018232961A1 WO 2018232961 A1 WO2018232961 A1 WO 2018232961A1 CN 2017098497 W CN2017098497 W CN 2017098497W WO 2018232961 A1 WO2018232961 A1 WO 2018232961A1
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terminal device
information
access node
routing table
offline
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PCT/CN2017/098497
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English (en)
French (fr)
Inventor
杜光东
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深圳市盛路物联通讯技术有限公司
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Publication of WO2018232961A1 publication Critical patent/WO2018232961A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Definitions

  • the present invention relates to the field of Internet of Things technologies, and in particular, to a method and system for updating an Internet of Things routing table in combination with aggregation unit information.
  • IOT Internet of Things
  • the terminal device simply "broadcasts” a small amount of data information, or “listens” directly to its own data information, and can also be called a "dumb device”.
  • the IoT access node accesses the Internet of Things and collects the data. The information is reported to the aggregation unit, and the data information generated by the terminal device is analyzed and processed by the aggregation unit.
  • the routing table is the basis for the IoT access node to forward data information, and plays a vital role in realizing the positioning, monitoring and management of the Internet of Things.
  • the routing table maintenance scheme has been optimized to meet the user's Higher demand for the Internet of Things.
  • the embodiment of the invention discloses an Internet of Things routing table updating method and system combining the aggregation unit information, which is used for updating the Internet of Things routing table.
  • the first aspect of the present invention discloses an Internet of Things routing table update method that combines aggregation unit information, and may include:
  • the aggregation unit sends the routing table update indication information to the IoT access node, where the routing table update indication information includes the information of interest of the convergence unit, where the information of interest includes the location information or the location of interest of the convergence unit.
  • the IoT access node listens to the terminal device within the coverage of the wireless network to determine the terminal device in the online state as the online terminal device;
  • the IoT access node determines, according to the online routing table of the online terminal device and the IoT access node, a terminal device whose routing information is recorded in the main routing table but is not in an online state, and serves as an offline terminal. device;
  • the IoT access node acquires basic information of the offline terminal device, and determines the departure Whether the basic information of the line terminal device matches the information of interest of the aggregation unit, and the basic information of the offline terminal device includes location information of the offline terminal device or a device type of the offline terminal device;
  • the IoT access node determines that the basic information of the offline terminal device matches the information of interest of the convergence unit, initiates offline timing to obtain an offline duration of the offline terminal device;
  • the IoT access node determines whether the offline duration meets a preset duration
  • the Internet of Things access node determines, according to the online routing table of the online terminal device and the Internet of Things access node, that routing information is recorded in the After the terminal device in the main routing table is not in the online state, the method further includes:
  • the IoT access node determines, according to the online routing table of the online terminal device and the IoT access node, an online terminal device whose routing information is not recorded in the main routing table, as the Internet of Things connection
  • the terminal device to be added within the coverage of the node's own wireless network
  • the IoT access node acquires the basic information of the terminal device to be added, and determines whether the basic information of the terminal device to be added matches the information of interest of the aggregation unit; the basic information of the terminal device to be added includes The location information of the terminal device to be added or the device type of the terminal device to be added;
  • the IoT access node adds the routing information of the terminal device to be added to the main routing table when determining that the basic information of the terminal device to be added matches the information of the aggregation unit.
  • the IoT access node listens to the terminal device within the coverage of the wireless network to determine the terminal device that is in the online state, and serves as the online terminal device. Thereafter, the method further includes:
  • the IoT access node receives the data information sent by the online terminal device in the coverage of the wireless network, and the data information carries the location information of the online terminal device or the device type of the online terminal device;
  • the IoT access node determines, according to the main routing table of the online terminal device and the IoT access node, whether the routing information of the online terminal device is recorded in the main routing table;
  • the Internet of Things access node determines that the online routing table is not recorded in the main routing table.
  • the routing information is prepared, determining whether the data information matches the information of interest of the convergence unit;
  • the IoT access node adds the routing information of the online terminal device to the main routing table when determining that the data information matches the information of interest of the aggregation unit.
  • the method further includes:
  • the IoT access node deletes the routing information of the offline terminal device in the main routing table when it is determined that the basic information of the offline terminal device does not match the information of the aggregation unit.
  • the method further includes:
  • the IoT access node adds the routing information of the online terminal device to the slave routing table when determining that the routing information of the online terminal device is not recorded in the routing table.
  • the second aspect of the present invention discloses an Internet of Things routing table update system that combines aggregation unit information, and may include:
  • a convergence unit configured to send routing table update indication information to the IoT access node, where the routing table update indication information includes information of interest of the convergence unit, where the information of interest includes a location of interest of the convergence unit Information or the type of device of interest of the aggregation unit;
  • the IoT access node is configured to listen to the terminal device within the coverage of the wireless network to determine the terminal device in the online state, as the online terminal device;
  • the IoT access node is further configured to determine, according to the online routing table of the online terminal device and the IoT access node, a terminal device whose routing information is recorded in the main routing table but is not in an online state, As an offline terminal device;
  • the IoT access node is further configured to acquire basic information of the offline terminal device, and determine whether the basic information of the offline terminal device matches the information of interest of the convergence unit, where the basic information of the offline terminal device includes Location information of the offline terminal device or a device type of the offline terminal device;
  • the IoT access node is further configured to: when determining that the basic information of the offline terminal device matches the information of interest of the convergence unit, initiate an offline timing to obtain an offline duration of the offline terminal device;
  • the IoT access node is further configured to determine whether the offline duration meets a preset duration
  • the IoT access node is further configured to delete routing information of the offline terminal device in the main routing table when determining that the offline duration meets the preset duration.
  • the Internet of Things access node is further configured to determine a route according to a primary routing table of the online terminal device and the Internet of Things access node.
  • the terminal device that is recorded in the main routing table but is not in the online state after the offline terminal device, determines that the routing information is not recorded according to the online routing device and the main routing table of the Internet of Things access node.
  • the online terminal device in the main routing table is used as the terminal device to be added in the coverage of the wireless network of the IoT access node; the basic information of the terminal device to be added is obtained, and the terminal device to be added is determined.
  • the basic information of the terminal device to be added includes the location information of the terminal device to be added or the device type of the terminal device to be added; Adding the basic information in the main routing table when the basic information of the terminal device to be added matches the information of interest of the aggregation unit Adding routing information terminal device.
  • the Internet of Things access node is further configured to listen to the terminal device within the coverage of the wireless network to determine the terminal device that is in the online state, as Receiving, by the online terminal device, the data information sent by the online terminal device in the coverage of the wireless network, the data information carrying the location information of the online terminal device or the device type of the online terminal device; Determining, by the terminal device, the main routing table of the Internet of Things access node, whether the routing information of the online terminal device is recorded in the main routing table; determining that the online routing device is not recorded in the main routing table When the information is routed, it is determined whether the data information matches the information of interest of the aggregation unit; when it is determined that the data information matches the information of interest of the aggregation unit, the routing information of the online terminal device is added to the The main routing table.
  • the Internet of Things access node is further configured to: when determining that the basic information of the offline terminal device does not match the information of interest of the convergence unit, And deleting routing information of the offline terminal device in the primary routing table.
  • the Internet of Things access node is further configured to: when determining that the data information does not match the information of interest of the convergence unit, determine the object Whether the routing information of the online terminal device is recorded in the slave routing table of the network access node; and in determining the routing information of the online terminal device when the slave routing table is not recorded, in the slave routing table Adding routing information of the online terminal device.
  • the embodiment of the invention has the following beneficial effects:
  • the aggregation unit sends the routing table update indication information to the Internet of Things access node, where the routing table update indication information includes the information of interest of the convergence unit, where the information of interest includes the location information of the convergence unit or The type of device of interest for the aggregation unit.
  • the IoT access node listens to the terminal device within the coverage of its own wireless network to determine the terminal device in the online state as the online terminal device.
  • the Internet of Things access node may determine, according to the determined online terminal device and the main routing table of the Internet of Things access node, that the routing information is recorded in the main routing table but is not the determined terminal device of the online terminal device.
  • an offline terminal device further obtaining basic information of the offline terminal device, determining whether the basic information of the offline terminal device matches the information of interest of the aggregation unit, and starting when determining that the basic information of the offline terminal device matches the information of interest of the convergence unit
  • the offline timing is obtained to obtain the offline duration of the offline terminal device, and it is further determined whether the offline duration meets the preset duration. If the preset duration is met, the IoT access node deletes the routing information of the offline terminal device in the main routing table.
  • the offline terminal device that records the routing information in the main routing table but is not in the online state is determined, and further determines that the offline terminal device is the terminal device interested in the aggregation unit, and the offline duration After the preset duration is met, the routing information of the offline terminal device is deleted from the main routing table, and the information of the information of the aggregation unit is combined to update the Internet of Things routing table, which helps the aggregation unit to filter and collect the data information.
  • FIG. 1 is a schematic diagram of an Internet of Things architecture disclosed by some embodiments of the present invention.
  • FIG. 2 is a schematic flowchart of a method for updating an Internet of Things routing table in combination with aggregation unit information according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of another method for updating an Internet of Things routing table in combination with aggregation unit information according to an embodiment of the present invention
  • FIG. 4 is a schematic flowchart of another method for updating an Internet of Things routing table in combination with aggregation unit information according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of an Internet of Things routing table update system combining aggregation unit information according to an embodiment of the present invention.
  • the embodiment of the invention discloses an Internet of Things routing table updating method combining the information of the aggregation unit, which is used for updating the Internet of Things routing table in combination with the information of interest of the aggregation unit, and is beneficial to the filtering and collecting of the data information by the aggregation unit.
  • the embodiment of the invention also discloses an Internet of Things routing table update system combining the aggregation unit information.
  • FIG. 1 is a schematic diagram of an Internet of Things architecture disclosed in some embodiments of the present invention. It should be noted that FIG. 1 is only some implementations of the present invention.
  • the schematic diagram of the disclosed Internet of Things architecture, and other schematic diagrams obtained by optimizing or deforming on the basis of FIG. 1 are all within the scope of protection of the present invention, and are not exemplified herein.
  • the IoT architecture shown in FIG. 1 may include three layers of a terminal device layer, an access node layer, and an aggregation unit layer according to functions.
  • the terminal device layer includes a mass terminal device located at the edge of the Internet of Things, such as a hygrometer, a smoke sensor, a ventilation device, a rain sensor, an irrigation valve, etc.; the access node layer may include a large number of IoT access nodes, and these Internet of Things access nodes can be interconnected by a network (not shown in Figure 1).
  • the IoT access node may be a router, a repeater, or the like, which is not limited in the embodiment of the present invention.
  • the aggregation unit layer may include a convergence unit, wherein the aggregation unit is used as a human-machine interface of the Internet of Things in the Internet of Things architecture, and is used for high-level management of the entire Internet of Things through the Internet of Things access node, including collecting a certain period of time.
  • the data reported by the massive terminal equipment analyzes and decides the data, and then converts it into a simple warning, abnormal or related report required by the user; the aggregation unit can also obtain the information or configure the terminal device parameters by sending instructions (the data transmission direction at this time) Terminal equipment); the aggregation unit can also introduce various input services, from big data to Social networks, even from social tools "likes" to weather sharing.
  • the IoT access node can use any standard networking protocol, and the IoT access node can implement data analysis between different network standards; in the IoT architecture shown in Figure 1, each IoT connection
  • the ingress node can provide IoT data receiving and receiving services for a large number of terminal devices covered by its own wireless network, wherein each terminal device within the coverage of each IoT access node's own wireless network can have a built-in wireless communication module. This allows each IoT access node to communicate wirelessly with each terminal device within its coverage by wireless network communication.
  • the wireless communication module built into the terminal device can input the upper frequency point 470MHz and the lower frequency point 510MHz during production, so that the wireless communication module can automatically define the communication frequency band as 470MHz ⁇ 510MHz, It complies with the provisions of China's SRRC standard; alternatively, it can input the upper frequency point of 868MHz and the lower frequency point of 908MHz, so that the wireless communication module can automatically define the communication frequency band as 868MHz to 908MHz to comply with the European ETSI standard; or, you can enter The frequency is 918MHz and the lower frequency is 928MHz, so the wireless communication module can automatically define the communication frequency band as 918MHz ⁇ 928MHz to meet the requirements of the US FCC standard.
  • the communication frequency band of the wireless communication module can also be defined as conforming to the Japanese ARIB standard or Canada.
  • the specification of the IC standard is not limited in the embodiment of the present invention.
  • the terminal device can use Frequency Division Multiple Access (FDMA), Frequency-Hopping Spread Spectrum (FHSS), and Dynamic Time Division Multiple Access (Dynamic Time Division Multiple Access). , DTDMA), and backtracking multiplexing (CSMA) are combined to solve the interference problem.
  • FDMA Frequency Division Multiple Access
  • FHSS Frequency-Hopping Spread Spectrum
  • CSMA Dynamic Time Division Multiple Access
  • FIG. 2 is a schematic flowchart of a method for updating an Internet of Things routing table in combination with aggregation unit information according to an embodiment of the present invention
  • an Internet of Things routing table update method combining aggregation unit information may include :
  • the aggregation unit sends the routing table update indication information to the IoT access node, where the routing table update indication information includes the information of interest of the convergence unit, where the information of interest includes the location information of the convergence unit or the interested unit of the convergence unit.
  • Equipment type
  • the aggregation unit may indicate that it is more eager to interact with terminal devices of certain specific functions, time segments or geographic locations, and collectively refer to specific functions, time segments, geographic locations, or device types.
  • Information of interest in the aggregation unit. Convergence unit through letter of interest Information, screening and collecting data collected by the terminal device.
  • the aggregation unit is interested in monitoring the humidity sensors of all farmland in a certain four counties, and then the location information of the four counties can be used as the location information of the convergence unit or the humidity sensor is used as the aggregation unit.
  • Equipment type is indicating that it is more eager to interact with terminal devices of certain specific functions, time segments or geographic locations, and collectively refer to specific functions, time segments, geographic locations, or device types.
  • the aggregation unit may indicate that the IoT access nodes of the four prefectures are used to preferentially report the data information collected by the humidity sensor to the aggregation unit, and the aggregation unit sends the information of interest as the routing table update indication information to the Internet of Things.
  • the access node so that the IoT access node updates and maintains its own routing table according to the routing table update indication information, so that the data information collected by the humidity sensor interested in the aggregation unit can be preferentially reported to the aggregation unit.
  • the IoT access node listens to the terminal device within the coverage of the wireless network to determine the terminal device that is in the online state, and serves as the online terminal device.
  • the Internet of Things access node After receiving the routing table update indication information sent by the aggregation unit, the Internet of Things access node updates the routing table according to the routing table update indication information.
  • the IoT access node listens to the terminal device in the coverage of the wireless network to determine the terminal device that is in the online state.
  • the Internet of Things access node listens to the heartbeat data packet sent by the terminal device within the coverage of the wireless network, and transmits the terminal device that sends the heartbeat data packet within the coverage of the wireless network as the online terminal device;
  • the IoT access node sends a broadcast message within the coverage of its own wireless network, and receives a response message from the terminal device within the coverage of the wireless network to the broadcast message, and responds to the broadcast message within the coverage of the wireless network.
  • Terminal device as an online terminal device.
  • the Internet of Things (IoT) access node determines, according to the main routing table of the online terminal device and the IoT access node, the terminal device whose routing information is recorded in the main routing table but is not in the online state, as an offline terminal device;
  • IoT Internet of Things
  • step 202 it is determined that the online terminal device of the IoT access node's own wireless network coverage, but no routing information is recorded in the terminal device in the main routing table, Think of it as an offline terminal device.
  • the Internet of Things access node obtains basic information of the offline terminal device, and determines whether the basic information of the offline terminal device matches the information of interest of the aggregation unit, where the basic information of the offline terminal device includes location information of the offline terminal device or an offline terminal device.
  • Equipment type
  • the Internet of Things access node obtains an Internet Protocol Address (IP) of the offline terminal device from the main routing table, and then according to the IP address.
  • IP Internet Protocol Address
  • the basic information of the offline terminal device is searched from the terminal device information table managed by the Internet of Things access node.
  • step 205 When it is determined that the basic information of the offline terminal device matches the information of interest of the convergence unit, the process proceeds to step 205.
  • the IoT access node When determining that the basic information of the offline terminal device matches the information of interest of the convergence unit, the IoT access node starts offline timing to obtain an offline duration of the offline terminal device.
  • the Internet of Things access node determines whether the offline duration meets the preset duration
  • step 207 If the offline duration meets the preset duration, the process proceeds to step 207; if the offline duration does not satisfy the preset duration, the process ends.
  • the Internet of Things access node deletes routing information of the offline terminal device in the main routing table.
  • the aggregation unit sends the routing table update indication information to the Internet of Things access node, where the routing table update indication information includes the information of interest of the convergence unit, where the information of interest includes the location information of the convergence unit or The type of device of interest for the aggregation unit.
  • the IoT access node listens to the terminal device within the coverage of its own wireless network to determine the terminal device in the online state as the online terminal device.
  • the Internet of Things access node may determine, according to the determined online terminal device and the main routing table of the Internet of Things access node, that the routing information is recorded in the main routing table but is not the determined terminal device of the online terminal device.
  • an offline terminal device further obtaining basic information of the offline terminal device, determining whether the basic information of the offline terminal device matches the information of interest of the aggregation unit, and starting when determining that the basic information of the offline terminal device matches the information of interest of the convergence unit
  • the offline timing is obtained to obtain the offline duration of the offline terminal device, and it is further determined whether the offline duration meets the preset duration. If the preset duration is met, the IoT access node deletes the routing information of the offline terminal device in the main routing table.
  • the offline terminal device that records the routing information in the main routing table but is not in the online state is determined, and further determines that the offline terminal device is the terminal device interested in the aggregation unit, and the offline duration After the preset duration is met, the routing information of the offline terminal device is deleted from the main routing table, and the information of the information of the aggregation unit is combined to update the Internet of Things routing table, which helps the aggregation unit to filter and collect the data information.
  • FIG. 3 is another schematic flowchart of an method for updating an Internet of Things routing table combined with aggregation unit information according to an embodiment of the present invention
  • FIG. 3 is a method for updating an Internet of Things routing table combined with aggregation unit information.
  • Can include:
  • the aggregation unit sends a routing table update indication information to the Internet of Things access node, where the routing table further
  • the new indication information includes information of interest of the convergence unit, where the information of interest includes location information of interest of the aggregation unit or a type of device of interest of the aggregation unit;
  • the aggregation unit receives a routing table update request sent by the Internet of Things access node, where the routing table update request includes the Internet of Things.
  • the identity of the access node after receiving the routing table update request, the aggregation unit extracts the identity of the IoT access node from the routing table update request, and verifies whether the IoT access node corresponding to the identity identifier is The legal node ends the process if not; if yes, the aggregation unit sends routing table update indication information to the IoT access node.
  • the Internet of Things access node listens to the terminal device within the coverage of the wireless network to determine the terminal device that is in the online state, and serves as the online terminal device.
  • step 302 After step 302 is performed, the process proceeds to step 303 or 304, and the specific situation is analyzed as follows.
  • the IoT access node determines, according to the main routing table of the online terminal device and the IoT access node, the terminal device whose routing information is recorded in the main routing table but is not in the online state, and serves as an offline terminal device;
  • step 303 After step 303 is performed, the process proceeds to step 307.
  • the Internet of Things access node determines, according to the main routing table of the online terminal device and the IoT access node, the online terminal device whose routing information is not recorded in the main routing table, and is within the coverage of the wireless network of the IoT access node itself. Terminal equipment to be added;
  • the IoT access node obtains the basic information of the terminal device to be added, and determines whether the basic information of the terminal device to be added matches the information of the information of the aggregation unit.
  • the basic information of the terminal device to be added includes the location information of the terminal device to be added or The device type of the terminal device to be added;
  • the IoT access node may further detect whether the routing information of the terminal device to be added is recorded in the routing table, if in the routing table. If the routing information of the terminal device to be added is recorded, the process ends. If the routing information of the terminal device to be added is not recorded in the routing table, the routing information of the terminal device to be added is added to the routing table.
  • the IoT access node can simultaneously manage two routing tables, which are a primary routing table and a secondary routing table, wherein the primary routing table is used to store routing information related to the terminal device that matches the information of interest of the aggregation unit.
  • the routing table is used to store routing information of other terminal devices. Based on this, the IoT access node preferentially forwards the data information of the corresponding terminal device in the main routing table. Main routing table The priority is higher than the routing table.
  • the IoT access node adds routing information of the terminal device to be added to the main routing table.
  • the Internet of Things access node obtains basic information of the offline terminal device, and determines whether the basic information of the offline terminal device matches the information of interest of the aggregation unit, and the basic information of the offline terminal device includes location information of the offline terminal device or offline terminal device.
  • Equipment type
  • step 308 If the basic information of the offline terminal device matches the information of interest of the convergence unit, go to step 308; if the basic information of the offline terminal device does not match the information of interest of the aggregation unit, go to step 310.
  • the Internet of Things access node starts offline timing to obtain an offline duration of the offline terminal device.
  • the Internet of Things access node determines whether the offline duration meets the preset duration
  • step 310 If the offline duration meets the preset duration, the process proceeds to step 310; if the offline duration does not satisfy the preset duration, the process ends.
  • the Internet of Things access node deletes routing information of the offline terminal device in the main routing table.
  • the Internet of Things access node uses the online terminal device that is not in the main routing table but belongs to the coverage of the wireless network as the terminal device to be added, and then the location information or device type of the terminal device to be added.
  • the routing information is added in the main routing table; when the Internet of Things access node has an online terminal device in the main routing table but is not within the coverage of its own wireless network, it is called If the offline terminal device further determines the location information of the offline terminal device or the device type matches the information of interest of the aggregation unit, the corresponding routing information is deleted from the main routing table.
  • FIG. 4 is another schematic flowchart of a method for updating an Internet of Things routing table combined with aggregation unit information according to an embodiment of the present invention
  • an Internet of Things routing table updating method combining aggregation unit information Can include:
  • the IoT access node receives the data information sent by the online terminal device in the coverage of the wireless network, where the data information carries the location information of the online terminal device or the device type of the online terminal device.
  • the IoT access node listens to the terminal device within the coverage of the wireless network to determine the terminal device that is in the online state. After the online terminal device, the IoT access node can further send the device according to the online terminal device.
  • the data information updates the main routing table.
  • the data information here is data information collected by the online terminal device and reported to the aggregation unit, the data information except The location information of the online terminal device or the device type of the online terminal device, including specific content, and other necessary identifiers.
  • the Internet of Things access node determines, according to the main routing table of the online terminal device and the Internet of Things access node, whether the routing information of the online terminal device is recorded in the main routing table.
  • the Internet of Things access node determines whether the data information matches the information of interest of the convergence unit.
  • step 404 if the data information matches the information of interest of the convergence unit, the process proceeds to step 404; if the data information does not match the information of interest of the aggregation unit, the process ends.
  • the Internet of Things access node adds routing information of the online terminal device to the main routing table.
  • the IoT access node determines whether the routing information of the online terminal device is recorded in the routing table of the Internet of Things access node; When the network access node determines that the routing information of the online terminal device is not recorded from the routing table, the routing information of the online terminal device is added from the routing table.
  • the routing information of the terminal device that does not match the information of interest of the aggregation unit is added to the secondary routing table as a routing table whose forwarding priority is lower than that of the primary routing table.
  • the IoT access node after receiving the data information sent by the online terminal device within the coverage of the wireless network, acquires the location information of the online terminal device or the device of the online terminal device from the data information. If the type of the obtained online terminal device or the device type of the online terminal device matches the information of the aggregation unit, and the routing information of the online terminal device does not exist in the main routing table, add the online information to the main routing table. Routing information of the terminal device.
  • FIG. 5 is a schematic structural diagram of an Internet of Things routing table updating system that combines aggregation unit information according to an embodiment of the present invention
  • an Internet of Things routing table updating system that combines aggregation unit information may include :
  • the aggregation unit 510 is configured to send routing table update indication information to the IoT access node 520, where the routing table update indication information includes the information of interest of the aggregation unit 510, where the information of interest includes the location information of interest or the aggregation unit of the convergence unit 510. 510 type of device of interest;
  • the Internet of Things access node 520 is configured to listen to the terminal device 530 within the coverage of the wireless network to determine the terminal device 530 in the online state as the online terminal device;
  • the IoT access node 520 is further configured to determine, according to the main routing table of the online terminal device and the IoT access node 520, the terminal device 530 whose routing information is recorded in the main routing table but is not in the online state, as the offline terminal device;
  • the IoT access node 520 is further configured to acquire basic information of the offline terminal device, and determine whether the basic information of the offline terminal device matches the information of interest of the aggregation unit 510, and the basic information of the offline terminal device includes the location information of the offline terminal device or offline.
  • the IoT access node 520 is further configured to: when determining that the basic information of the offline terminal device matches the information of interest of the convergence unit 510, initiate offline timing to obtain an offline duration of the offline terminal device;
  • the Internet of Things access node 520 is further configured to determine whether the offline duration meets the preset duration
  • the IoT access node 520 is further configured to delete routing information of the offline terminal device in the main routing table when determining that the offline duration meets the preset duration.
  • the implementation manner of the basic information of the offline terminal device is obtained by the Internet of Things access node 520: the Internet of Things access node 520 obtains the IP address of the offline terminal device from the main routing table, and then according to the IP address. The basic information of the offline terminal device is searched from the terminal device information table managed by the Internet of Things access node 520.
  • the aggregation unit 510 receives the routing table update request sent by the Internet of Things access node 520, and the routing table is updated.
  • the request includes the identity of the IoT access node 520; after receiving the routing table update request, the aggregation unit 510 extracts the identity of the IoT access node 520 from the routing table update request, and verifies the identity corresponding to the identity identifier. Whether the IoT access node 520 is a legal node, if not, the process ends; if so, the aggregation unit 510 sends routing table update indication information to the IoT access node 520.
  • the IoT access node 520 listens to the terminal device 530 in the coverage of the wireless network to determine the terminal device 530 in the online state.
  • the Internet of Things access node 520 listens to the heartbeat data packet sent by the terminal device 530 in the coverage of the wireless network, and transmits the terminal device 530 that sends the heartbeat data packet within the coverage of the wireless network as the online terminal device; or
  • the Internet of Things access node 520 transmits a broadcast message within its own wireless network coverage, and receives a response message made by the terminal device 530 within the coverage of the wireless network to the broadcast message, and makes a broadcast message within the coverage of the wireless network. Responsive terminal device 530 as an online terminal Ready.
  • the Internet of Things access node 520 is further configured to determine, according to the main routing table of the online terminal device and the Internet of Things access node 520, that the routing information is recorded in the main routing table but is not in the online state.
  • the terminal device 530 after the offline terminal device, determines the online terminal device whose routing information is not recorded in the main routing table, as the Internet of Things access node 520, according to the main routing table of the online terminal device and the Internet of Things access node 520.
  • the terminal device to be added in the coverage of the wireless network; the basic information of the terminal device to be added, and the basic information of the terminal device to be added are matched with the information of the aggregation unit 510; the basic information of the terminal device to be added includes the information to be added.
  • the Internet of Things access node 520 is further configured to delete the routing information of the offline terminal device in the main routing table when it is determined that the basic information of the offline terminal device does not match the information of interest of the aggregation unit 510.
  • the Internet of Things access node 520 is further configured to listen to the terminal device within the coverage of the wireless network to determine the terminal device 530 in the online state, and receive the wireless device as the online terminal device.
  • the routing information of the online terminal device is added to the main routing table.
  • the IoT access node 520 determines whether the routing table of the Internet of Things access node 520 records the route of the online terminal device. Information; when the Internet of Things access node 520 determines that the routing information of the online terminal device is not recorded from the routing table, the routing information of the online terminal device is added from the routing table. In this embodiment, the routing information of the terminal device that does not match the information of interest of the aggregation unit 510 is added to the secondary routing table as a routing table whose forwarding priority is lower than that of the primary routing table.
  • the Internet of Things access node 520 is further configured to determine the Internet of Things access section when determining that the data information sent by the online terminal device does not match the information of interest of the convergence unit 510. Whether the routing information of the online terminal device is recorded in the routing table of point 520; and when it is determined that the routing information of the online terminal device is not recorded in the routing table, the routing information of the online terminal device is added from the routing table.
  • an offline terminal device that records routing information in the main routing table but is not in an online state is determined, and further determines that the offline terminal device is a terminal interested in the aggregation unit.
  • the routing information of the offline terminal device is deleted from the main routing table, and the information of the aggregation unit is used to update the Internet of Things routing table, thereby facilitating the filtering of the data information by the aggregation unit. And collecting.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • PROM Programmable Read-Only Memory
  • EPROM Erasable Programmable Read Only Memory
  • OTPROM One-Time Programmable Read-Only Memory
  • EEPROM Electronically-Erasable Programmable Read-Only Memory
  • CD-ROM Compact Disc Read-Only Memory

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Abstract

本发明实施例公开一种结合汇聚单元信息的物联网路由表更新方法及系统，该方法包括：汇聚单元向物联网接入节点下发路由表更新指示信息；物联网接入节点在自身无线网络覆盖范围内侦听终端设备，确定出处于在线状态的终端设备作为在线终端设备，结合物联网接入节点的主路由表，确定出路由信息记载在主路由表中却未处于在线状态的终端设备，作为离线终端设备，获取离线终端设备的基本信息，判断基本信息是否匹配汇聚单元的感兴趣信息，若是，启动离线计时以获得离线终端设备的离线时长，判断离线时长是否满足预设时长，在确定出离线时长满足预设时长时，删除主路由表中离线终端设备的路由信息；用于结合汇聚单元的感兴趣信息，更新物联网路由表。

Description

一种结合汇聚单元信息的物联网路由表更新方法及系统 技术领域
本发明涉及物联网技术领域，具体涉及一种结合汇聚单元信息的物联网路由表更新方法及系统。
背景技术
物联网(Internet of Things，简称IOT)技术在工业监控、智能家居、农业生产等方面逐渐拥有广泛的应用，利用射频识别设备、红外感应器、全球定位系统、激光扫描器等物联网终端设备实现对物品的智能化识别、定位、跟踪、监控和管理。终端设备只是简单地“广播”少量数据信息，或者“收听”直接发送给自己的数据信息，也可以称之为“哑设备”，通过物联网接入节点接入到物联网，将采集的数据信息上报给汇聚单元，由汇聚单元对终端设备产生的数据信息进行分析和处理。其中，路由表是物联网接入节点转发数据信息的依据，为实现物联网定位、监控和管理等起到至关重要的作用，本领域中也一直在优化路由表维护方案，以满足用户对物联网的更高需求。
发明内容
本发明实施例公开了一种结合汇聚单元信息的物联网路由表更新方法及系统，用于更新物联网路由表。
本发明第一方面公开了一种结合汇聚单元信息的物联网路由表更新方法，可包括：
汇聚单元向物联网接入节点下发路由表更新指示信息，所述路由表更新指示信息包括所述汇聚单元的感兴趣信息，所述感兴趣信息包括所述汇聚单元的感兴趣位置信息或者所述汇聚单元的感兴趣设备类型；
所述物联网接入节点在自身无线网络覆盖范围内侦听终端设备，以确定出处于在线状态的终端设备，作为在线终端设备；
所述物联网接入节点根据所述在线终端设备与所述物联网接入节点的主路由表，确定出路由信息记载在所述主路由表中却未处于在线状态的终端设备，作为离线终端设备；
所述物联网接入节点获取所述离线终端设备的基本信息，以及判断所述离 线终端设备的基本信息是否匹配所述汇聚单元的感兴趣信息，所述离线终端设备的基本信息包括所述离线终端设备的位置信息或者所述离线终端设备的设备类型；
所述物联网接入节点在确定出所述离线终端设备的基本信息匹配所述汇聚单元的感兴趣信息时，启动离线计时以获得所述离线终端设备的离线时长；
所述物联网接入节点判断所述离线时长是否满足预设时长；
所述物联网接入节点在确定出所述离线时长满足所述预设时长时，删除所述主路由表中所述离线终端设备的路由信息。
作为一种可选的实施方式，在本发明第一方面中，所述物联网接入节点根据所述在线终端设备与所述物联网接入节点的主路由表，确定出路由信息记载在所述主路由表中却未处于在线状态的终端设备，作为离线终端设备之后，所述方法还包括：
所述物联网接入节点根据所述在线终端设备与所述物联网接入节点的主路由表，确定出路由信息未记载在所述主路由表中的在线终端设备，作为所述物联网接入节点自身无线网络覆盖范围内的待添加终端设备；
所述物联网接入节点获取所述待添加终端设备的基本信息，以及判断所述待添加终端设备的基本信息是否匹配所述汇聚单元的感兴趣信息；所述待添加终端设备的基本信息包括所述待添加终端设备的位置信息或者所述待添加终端设备的设备类型；
所述物联网接入节点在确定出所述待添加终端设备的基本信息匹配所述汇聚单元的感兴趣信息时，在所述主路由表中添加所述待添加终端设备的路由信息。
作为一种可选的实施方式，在本发明第一方面中，所述物联网接入节点在自身无线网络覆盖范围内侦听终端设备，以确定出处于在线状态的终端设备，作为在线终端设备之后，所述方法还包括：
所述物联网接入节点接收自身无线网络覆盖范围内的所述在线终端设备发送的数据信息，所述数据信息携带所述在线终端设备的位置信息或者所述在线终端设备的设备类型；
所述物联网接入节点根据所述在线终端设备与所述物联网接入节点的主路由表，确定所述主路由表是否记载有所述在线终端设备的路由信息；
所述物联网接入节点在确定出所述主路由表没有记载有所述在线终端设 备的路由信息时，判断所述数据信息是否匹配所述汇聚单元的感兴趣信息；
所述物联网接入节点在确定出所述数据信息匹配所述汇聚单元的感兴趣信息时，将所述在线终端设备的路由信息添加进所述主路由表。
作为一种可选的实施方式，在本发明第一方面中，所述方法还包括：
所述物联网接入节点在确定出所述离线终端设备的基本信息不匹配所述汇聚单元的感兴趣信息时，删除所述主路由表中所述离线终端设备的路由信息。
作为一种可选的实施方式，在本发明第一方面中，所述方法还包括：
所述物联网接入节点在确定出所述数据信息不匹配所述汇聚单元的感兴趣信息时，判断所述物联网接入节点的从路由表是否记载有所述在线终端设备的路由信息；
所述物联网接入节点在确定出所述从路由表没有记载有所述在线终端设备路由信息时，在所述从路由表中添加所述在线终端设备的路由信息。
本发明第二方面公开了一种结合汇聚单元信息的物联网路由表更新系统，可包括：
汇聚单元，用于向物联网接入节点下发路由表更新指示信息，所述路由表更新指示信息包括所述汇聚单元的感兴趣信息，所述感兴趣信息包括所述汇聚单元的感兴趣位置信息或者所述汇聚单元的感兴趣设备类型；
所述物联网接入节点用于在自身无线网络覆盖范围内侦听终端设备，以确定出处于在线状态的终端设备，作为在线终端设备；
所述物联网接入节点还用于根据所述在线终端设备与所述物联网接入节点的主路由表，确定出路由信息记载在所述主路由表中却未处于在线状态的终端设备，作为离线终端设备；
所述物联网接入节点还用于获取所述离线终端设备的基本信息，以及判断所述离线终端设备的基本信息是否匹配所述汇聚单元的感兴趣信息，所述离线终端设备的基本信息包括所述离线终端设备的位置信息或者所述离线终端设备的设备类型；
所述物联网接入节点还用于在确定出所述离线终端设备的基本信息匹配所述汇聚单元的感兴趣信息时，启动离线计时以获得所述离线终端设备的离线时长；
所述物联网接入节点还用于判断所述离线时长是否满足预设时长；
所述物联网接入节点还用于在确定出所述离线时长满足所述预设时长时，删除所述主路由表中所述离线终端设备的路由信息。
作为一种可选的实施方式，在本发明第二方面中，所述物联网接入节点还用于在根据所述在线终端设备与所述物联网接入节点的主路由表，确定出路由信息记载在所述主路由表中却未处于在线状态的终端设备，作为离线终端设备之后，根据所述在线终端设备与所述物联网接入节点的主路由表，确定出路由信息未记载在所述主路由表中的在线终端设备，作为所述物联网接入节点自身无线网络覆盖范围内的待添加终端设备；获取所述待添加终端设备的基本信息，以及判断所述待添加终端设备的基本信息是否匹配所述汇聚单元的感兴趣信息；所述待添加终端设备的基本信息包括所述待添加终端设备的位置信息或者所述待添加终端设备的设备类型；以及在确定出所述待添加终端设备的基本信息匹配所述汇聚单元的感兴趣信息时，在所述主路由表中添加所述待添加终端设备的路由信息。
作为一种可选的实施方式，在本发明第二方面中，所述物联网接入节点还用于在自身无线网络覆盖范围内侦听终端设备，以确定出处于在线状态的终端设备，作为在线终端设备之后，接收自身无线网络覆盖范围内的所述在线终端设备发送的数据信息，所述数据信息携带所述在线终端设备的位置信息或者所述在线终端设备的设备类型；根据所述在线终端设备与所述物联网接入节点的主路由表，确定所述主路由表是否记载有所述在线终端设备的路由信息；在确定出所述主路由表没有记载有所述在线终端设备的路由信息时，判断所述数据信息是否匹配所述汇聚单元的感兴趣信息；在确定出所述数据信息匹配所述汇聚单元的感兴趣信息时，将所述在线终端设备的路由信息添加进所述主路由表。
作为一种可选的实施方式，在本发明第二方面中，所述物联网接入节点还用于在确定出所述离线终端设备的基本信息不匹配所述汇聚单元的感兴趣信息时，删除所述主路由表中所述离线终端设备的路由信息。
作为一种可选的实施方式，在本发明第二方面中，所述物联网接入节点还用于在确定出所述数据信息不匹配所述汇聚单元的感兴趣信息时，判断所述物联网接入节点的从路由表是否记载有所述在线终端设备的路由信息；以及在确定出所述从路由表没有记载有所述在线终端设备路由信息时，在所述从路由表 中添加所述在线终端设备的路由信息。
与现有技术相比，本发明实施例具有以下有益效果：
在本发明实施例中，汇聚单元将路由表更新指示信息发送给物联网接入节点，该路由表更新指示信息包括汇聚单元的感兴趣信息，该感兴趣信息包括汇聚单元的感兴趣位置信息或者汇聚单元的感兴趣设备类型。之后，物联网接入节点在自身无线网络覆盖范围内侦听终端设备，以确定出处于在线状态的终端设备，作为在线终端设备。那么，物联网接入节点可以根据确定出的在线终端设备、物联网接入节点的主路由表，确定出有路由信息记载在主路由表中但是并不是确定出的在线终端设备的终端设备，作为离线终端设备，再进一步获取离线终端设备的基本信息，判断离线终端设备的基本信息是否匹配汇聚单元的感兴趣信息，在确定出离线终端设备的基本信息匹配汇聚单元的感兴趣信息时，启动离线计时以获得离线终端设备的离线时长，并进一步判断离线时长是否满足预设时长，如果满足预设时长，物联网接入节点将主路由表中的离线终端设备的路由信息删除。可以看出，在本发明实施例中，确定出主路由表中记载有路由信息、但是却未处于在线状态的离线终端设备，进一步确定离线终端设备是汇聚单元感兴趣的终端设备、且离线时长满足预设时长后，从主路由表中删除该离线终端设备的路由信息，以结合汇聚单元感兴趣信息，更新物联网路由表，有助于实现汇聚单元对数据信息的筛选和收集。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图
图1为本发明一些实施例公开的物联网架构示意图；
图2为本发明实施例公开的结合汇聚单元信息的物联网路由表更新方法的流程示意图；
图3为本发明实施例公开的结合汇聚单元信息的物联网路由表更新方法的另一流程示意图；
图4为本发明实施例公开的结合汇聚单元信息的物联网路由表更新方法的另一流程示意图；
图5为本发明实施例公开的结合汇聚单元信息的物联网路由表更新系统的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明的是，本发明实施例的术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
本发明实施例公开了一种结合汇聚单元信息的物联网路由表更新方法，用于结合汇聚单元的感兴趣信息，更新物联网路由表，有助于实现汇聚单元对数据信息的筛选和收集。本发明实施例还公开了一种结合汇聚单元信息的物联网路由表更新系统。
在介绍本发明技术方案之前，先简单介绍本发明一些实施例公开的物联网架构，图1为本发明一些实施例公开的物联网架构示意图，需要说明的是，图1仅为本发明一些实施例公开的物联网架构示意图，其它在图1基础上进行优化或者变形得到的示意图均属于本发明的保护范围，在此不再一一举例。图1所示的物联网架构按照功能划分可以包括终端设备层、接入节点层以及汇聚单元层三个层。其中，终端设备层包括位于物联网边缘的海量终端设备，例如湿度计、烟感器、通风设备、雨量传感器、灌溉阀等等；接入节点层可以包括大量物联网接入节点，这些大量的物联网接入节点之间可以通过网络互联(图1未全部示出)。在接入节点层中，物联网接入节点可以是路由器、中继器等各种中间设备，本发明实施例不作限定。汇聚单元层可以包括汇聚单元，其中，汇聚单元在这种物联网架构中用作物联网的人机接口，用于通过物联网接入节点对整个物联网进行高层管理，包括收集某段时间内的海量终端设备上报的数据，对数据进行分析和决策，然后转化成为用户需要的简单预警、异常或者相关报告；汇聚单元还可以通过发指令去获取信息或者配置终端设备参数(此时数据的传输指向终端设备)；汇聚单元还可以引入各种输入业务，从大数据到 社交网络、甚至从社交工具“点赞”到天气分享等。另外，物联网接入节点可以使用任何标准的组网协议，而且物联网接入节点可以在不同的网络制式之间实现数据解析；在图1所示的物联网架构中，每一个物联网接入节点可以为其自身无线网络所覆盖范围内的海量终端设备提供物联网数据收发服务，其中，每一个物联网接入节点自身无线网络所覆盖范围内的每一个终端设备可以内置有无线通讯模块，这使得每一个物联网接入节点可以通过无线网络通讯方式与自身无线网络所覆盖范围内的每一个终端设备进行无线通讯。在图1所示的物联网架构中，终端设备内置的无线通讯模块在生产时，可以输入上频点470MHz，下频点510MHz，这样无线通讯模块可以自动将通讯频段定义为470MHz～510MHz，以符合中国SRRC标准的规定；或者，也可以输入上频点868MHz，下频点908MHz，这样无线通讯模块可以自动将通讯频段定义为868MHz～908MHz，以符合欧洲ETSI标准的规定；或者，可以输入上频点918MHz，下频点928MHz，这样无线通讯模块可以自动将通讯频段定义为918MHz～928MHz，以符合美国FCC标准的规定；或者，无线通讯模块的通讯频段也可以定义为符合日本ARIB标准或加拿大IC标准的规定，本发明实施例不作限定。在图1所示的物联网架构中，终端设备可以采用频分复用(Frequency Division Multiple Access，FDMA)、跳频(Frequency-Hopping Spread Spectrum，FHSS)、动态时分复用(Dynamic Time Division Multiple Access，DTDMA)、退避复用(CSMA)相结合的方法来解决干扰问题。
从图1所示的物联网架构出发，下面将结合具体实施例，对本发明技术方案进行详细说明。
实施例一
请参阅图2，图2为本发明实施例公开的结合汇聚单元信息的物联网路由表更新方法的流程示意图；如图2所示，一种结合汇聚单元信息的物联网路由表更新方法可包括：
201、汇聚单元向物联网接入节点下发路由表更新指示信息，该路由表更新指示信息包括汇聚单元的感兴趣信息，该感兴趣信息包括汇聚单元的感兴趣位置信息或者汇聚单元的感兴趣设备类型；
可以理解，在本发明实施例中，汇聚单元可以指示其更渴望与某些特定功能、时间段或者地理位置的终端设备进行交互，将特定功能、时间段、地理位置或者设备类型等统称之为汇聚单元的感兴趣信息。汇聚单元通过感兴趣信 息，对终端设备采集的数据信息进行筛选和收集。举例来说，汇聚单元对在某四个县辖区监控所有农田的湿度传感器感兴趣，那么可以将四个县辖区的位置信息作为汇聚单元的感兴趣位置信息或者将湿度传感器作为汇聚单元的感兴趣设备类型。汇聚单元可以指示这四个县辖区的部分物联网接入节点，用于优先将湿度传感器采集的数据信息上报给汇聚单元，汇聚单元将其感兴趣信息作为路由表更新指示信息下发给物联网接入节点，从而物联网接入节点根据路由表更新指示信息来更新和维护自己的路由表，以能够优先将汇聚单元感兴趣的湿度传感器采集的数据信息上报给汇聚单元。
202、物联网接入节点在自身无线网络覆盖范围内侦听终端设备，以确定出处于在线状态的终端设备，作为在线终端设备；
物联网接入节点在接收汇聚单元下发的路由表更新指示信息后，根据路由表更新指示信息进行路由表更新。
作为一种可选的实施方式，物联网接入节点在自身无线网络覆盖范围内侦听终端设备，以确定出处于在线状态的终端设备，作为在线终端设备具体包括：
物联网接入节点侦听自身无线网络覆盖范围内的终端设备发送的心跳数据包，将自身无线网络覆盖范围内发送心跳数据包的终端设备，作为在线终端设备；或者
物联网接入节点在自身无线网络覆盖范围内发送广播消息，以及接收自身无线网络覆盖范围内的终端设备对广播消息做出的响应消息，将自身无线网络覆盖范围内对广播消息做出响应的终端设备，作为在线终端设备。
203、物联网接入节点根据在线终端设备与物联网接入节点的主路由表，确定出路由信息记载在主路由表中却未处于在线状态的终端设备，作为离线终端设备；
在该步骤中，根据在步骤202中确定出来的在线终端设备，确定出虽然是物联网接入节点自身无线网络覆盖范围的在线终端设备、但是没有路由信息记载在主路由表中的终端设备，将其看作是离线终端设备。
204、物联网接入节点获取离线终端设备的基本信息，以及判断离线终端设备的基本信息是否匹配汇聚单元的感兴趣信息，离线终端设备的基本信息包括离线终端设备的位置信息或者离线终端设备的设备类型；
作为一种可选的实施方式，物联网接入节点从该主路由表获取离线终端设备的互联网协议地址(Internet Protocol Address，简称IP)，然后根据IP地址 从物联网接入节点管理的终端设备信息表中，查找该离线终端设备的基本信息。
在确定出离线终端设备的基本信息匹配汇聚单元的感兴趣信息时，转向步骤205。
205、物联网接入节点在确定出离线终端设备的基本信息匹配汇聚单元的感兴趣信息时，启动离线计时以获得离线终端设备的离线时长；
206、物联网接入节点判断离线时长是否满足预设时长；
其中，如果离线时长满足预设时长，转向步骤207；如果离线时长不满足预设时长，结束流程。
207、物联网接入节点删除主路由表中离线终端设备的路由信息。
在本发明实施例中，汇聚单元将路由表更新指示信息发送给物联网接入节点，该路由表更新指示信息包括汇聚单元的感兴趣信息，该感兴趣信息包括汇聚单元的感兴趣位置信息或者汇聚单元的感兴趣设备类型。之后，物联网接入节点在自身无线网络覆盖范围内侦听终端设备，以确定出处于在线状态的终端设备，作为在线终端设备。那么，物联网接入节点可以根据确定出的在线终端设备、物联网接入节点的主路由表，确定出有路由信息记载在主路由表中但是并不是确定出的在线终端设备的终端设备，作为离线终端设备，再进一步获取离线终端设备的基本信息，判断离线终端设备的基本信息是否匹配汇聚单元的感兴趣信息，在确定出离线终端设备的基本信息匹配汇聚单元的感兴趣信息时，启动离线计时以获得离线终端设备的离线时长，并进一步判断离线时长是否满足预设时长，如果满足预设时长，物联网接入节点将主路由表中的离线终端设备的路由信息删除。可以看出，在本发明实施例中，确定出主路由表中记载有路由信息、但是却未处于在线状态的离线终端设备，进一步确定离线终端设备是汇聚单元感兴趣的终端设备、且离线时长满足预设时长后，从主路由表中删除该离线终端设备的路由信息，以结合汇聚单元感兴趣信息，更新物联网路由表，有助于实现汇聚单元对数据信息的筛选和收集。
实施例二
请参阅图3，图3为本发明实施例公开的结合汇聚单元信息的物联网路由表更新方法的另一流程示意图；如图3所示，一种结合汇聚单元信息的物联网路由表更新方法可包括：
301、汇聚单元向物联网接入节点下发路由表更新指示信息，该路由表更 新指示信息包括汇聚单元的感兴趣信息，该感兴趣信息包括汇聚单元的感兴趣位置信息或者汇聚单元的感兴趣设备类型；
作为一种可选的实施方式，在汇聚单元向物联网接入节点下发路由表更新指示信息之前，汇聚单元接收物联网接入节点发送的路由表更新请求，该路由表更新请求包括物联网接入节点的身份标识；汇聚单元在接收到该路由表更新请求后，从路由表更新请求中提取该物联网接入节点的身份标识，并验证该身份标识对应的物联网接入节点是否为合法节点，如果不是，则结束流程；如果是，汇聚单元向物联网接入节点下发路由表更新指示信息。
302、物联网接入节点在自身无线网络覆盖范围内侦听终端设备，以确定出处于在线状态的终端设备，作为在线终端设备；
执行完步骤302后，转向步骤303或者304，具体情况如下分析。
303、物联网接入节点根据在线终端设备与物联网接入节点的主路由表，确定出路由信息记载在主路由表中却未处于在线状态的终端设备，作为离线终端设备；
执行完步骤303，转向执行步骤307。
304、物联网接入节点根据在线终端设备与物联网接入节点的主路由表，确定出路由信息未记载在主路由表中的在线终端设备，作为物联网接入节点自身无线网络覆盖范围内的待添加终端设备；
305、物联网接入节点获取待添加终端设备的基本信息，以及判断待添加终端设备的基本信息是否匹配汇聚单元的感兴趣信息；待添加终端设备的基本信息包括待添加终端设备的位置信息或者待添加终端设备的设备类型；
其中，如果确定出待添加终端设备的基本信息匹配汇聚单元的感兴趣信息，转向步骤306。如果确定出待添加终端设备的基本信息不匹配汇聚单元的感兴趣信息，物联网接入节点可以进一步检测其从路由表中是否记载有该待添加终端设备的路由信息，如果在从路由表中记载有该待添加终端设备的路由信息，那么结束流程；如果在从路由表中未记载有该待添加终端设备的路由信息，那么在从路由表中添加该待添加终端设备的路由信息。
需要说明，物联网接入节点可以同时管理着两份路由表，分别为主路由表和从路由表，其中，主路由表用于保存匹配汇聚单元的感兴趣信息的终端设备有关的路由信息，而从路由表用于保存其它终端设备的路由信息。基于此，物联网接入节点优先转发主路由表中对应的终端设备的数据信息。即主路由表的 优先级高于从路由表。
306、物联网接入节点在主路由表中添加待添加终端设备的路由信息；
307、物联网接入节点获取离线终端设备的基本信息，以及判断离线终端设备的基本信息是否匹配汇聚单元的感兴趣信息，离线终端设备的基本信息包括离线终端设备的位置信息或者离线终端设备的设备类型；
其中，如果离线终端设备的基本信息匹配汇聚单元的感兴趣信息，转向步骤308；如果离线终端设备的基本信息不匹配汇聚单元的感兴趣信息，转向步骤310。
308、物联网接入节点启动离线计时以获得离线终端设备的离线时长；
309、物联网接入节点判断离线时长是否满足预设时长；
如果离线时长满足预设时长，转向步骤310；如果离线时长不满足预设时长，结束流程。
310、物联网接入节点删除主路由表中离线终端设备的路由信息。
在本发明实施例中，物联网接入节点将主路由表中没有、但是却属于自身无线网络覆盖范围内的在线终端设备作为待添加终端设备，然后在待添加终端设备的位置信息或者设备类型匹配汇聚单元的感兴趣信息时，在主路由表中添加其路由信息；物联网接入节点将主路由表中有、但是不是自身无线网络覆盖范围内的在线终端设备时，将其称之为离线终端设备，如果进一步确定离线终端设备的位置信息或者设备类型匹配汇聚单元的感兴趣信息，则将其对应的路由信息从主路由表中删除。
实施例三
请参阅图4，图4为本发明实施例公开的结合汇聚单元信息的物联网路由表更新方法的另一流程示意图；如图4所示，一种结合汇聚单元信息的物联网路由表更新方法可包括：
401、物联网接入节点接收自身无线网络覆盖范围内的在线终端设备发送的数据信息，数据信息携带在线终端设备的位置信息或者在线终端设备的设备类型；
需要说明的是，物联网接入节点在自身无线网络覆盖范围内侦听终端设备，以确定出处于在线状态的终端设备，作为在线终端设备之后，物联网接入节点可以进一步根据在线终端设备发送的数据信息更新主路由表。这里的数据信息是在线终端设备采集的需要上报给汇聚单元的数据信息，该数据信息除了 携带在线终端设备的位置信息或者在线终端设备的设备类型，还包括具体内容、以及其它必需的标识等。
402、物联网接入节点根据在线终端设备与物联网接入节点的主路由表，确定主路由表是否记载有在线终端设备的路由信息；
确定发送数据信息的在线终端设备的路由信息是否已经记载在主路由表中，如果没有，转向步骤403；如果已经有记载，结束该流程，只需要根据主路由表的路由信息转发数据信息。
403、物联网接入节点判断数据信息是否匹配汇聚单元的感兴趣信息；
其中，如果数据信息匹配汇聚单元的感兴趣信息，转向步骤404；如果数据信息不匹配汇聚单元的感兴趣信息，则结束该流程。
404、物联网接入节点将在线终端设备的路由信息添加进主路由表。
作为一种可选的实施方式，物联网接入节点在确定出数据信息不匹配汇聚单元的感兴趣信息时，判断物联网接入节点的从路由表是否记载有在线终端设备的路由信息；物联网接入节点在确定出从路由表没有记载有在线终端设备路由信息时，在从路由表中添加在线终端设备的路由信息。在该实施方式中，通过将不匹配汇聚单元的感兴趣信息的终端设备的路由信息添加到从路由表中，作为转发优先级低于主路由表的路由表。
在本发明实施例中，物联网接入节点在接收到自身无线网络覆盖范围内的在线终端设备发送的数据信息后，从数据信息中获取携带的在线终端设备的位置信息或者在线终端设备的设备类型，如获取的在线终端设备的位置信息或者在线终端设备的设备类型匹配汇聚单元的感兴趣信息时，且主路由表中还没有该在线终端设备的路由信息时，在主路由表中添加在线终端设备的路由信息。
实施例四
请参阅图5，图5为本发明实施例公开的结合汇聚单元信息的物联网路由表更新系统的结构示意图；如图5所示，一种结合汇聚单元信息的物联网路由表更新系统可包括：
汇聚单元510，用于向物联网接入节点520下发路由表更新指示信息，路由表更新指示信息包括汇聚单元510的感兴趣信息，感兴趣信息包括汇聚单元510的感兴趣位置信息或者汇聚单元510的感兴趣设备类型；
物联网接入节点520用于在自身无线网络覆盖范围内侦听终端设备530，以确定出处于在线状态的终端设备530，作为在线终端设备；
物联网接入节点520还用于根据在线终端设备与物联网接入节点520的主路由表，确定出路由信息记载在主路由表中却未处于在线状态的终端设备530，作为离线终端设备；
物联网接入节点520还用于获取离线终端设备的基本信息，以及判断离线终端设备的基本信息是否匹配汇聚单元510的感兴趣信息，离线终端设备的基本信息包括离线终端设备的位置信息或者离线终端设备的设备类型；
物联网接入节点520还用于在确定出离线终端设备的基本信息匹配汇聚单元510的感兴趣信息时，启动离线计时以获得离线终端设备的离线时长；
物联网接入节点520还用于判断离线时长是否满足预设时长；
物联网接入节点520还用于在确定出离线时长满足预设时长时，删除主路由表中离线终端设备的路由信息。
作为一种可选的实施方式，物联网接入节点520获取离线终端设备的基本信息的实现方式为：物联网接入节点520从该主路由表获取离线终端设备的IP地址，然后根据IP地址从物联网接入节点520管理的终端设备信息表中，查找该离线终端设备的基本信息。
作为一种可选的实施方式，在汇聚单元510向物联网接入节点520下发路由表更新指示信息之前，汇聚单元510接收物联网接入节点520发送的路由表更新请求，该路由表更新请求包括物联网接入节点520的身份标识；汇聚单元510在接收到该路由表更新请求后，从路由表更新请求中提取该物联网接入节点520的身份标识，并验证该身份标识对应的物联网接入节点520是否为合法节点，如果不是，则结束流程；如果是，汇聚单元510向物联网接入节点520下发路由表更新指示信息。
作为一种可选的实施方式，物联网接入节点520在自身无线网络覆盖范围内侦听终端设备530，以确定出处于在线状态的终端设备530，作为在线终端设备具体包括：
物联网接入节点520侦听自身无线网络覆盖范围内的终端设备530发送的心跳数据包，将自身无线网络覆盖范围内发送心跳数据包的终端设备530，作为在线终端设备；或者
物联网接入节点520在自身无线网络覆盖范围内发送广播消息，以及接收自身无线网络覆盖范围内的终端设备530对广播消息做出的响应消息，将自身无线网络覆盖范围内对广播消息做出响应的终端设备530，作为在线终端设 备。
作为一种可选的实施方式，物联网接入节点520还用于在根据在线终端设备与物联网接入节点520的主路由表，确定出路由信息记载在主路由表中却未处于在线状态的终端设备530，作为离线终端设备之后，根据在线终端设备与物联网接入节点520的主路由表，确定出路由信息未记载在主路由表中的在线终端设备，作为物联网接入节点520自身无线网络覆盖范围内的待添加终端设备；获取待添加终端设备的基本信息，以及判断待添加终端设备的基本信息是否匹配汇聚单元510的感兴趣信息；待添加终端设备的基本信息包括待添加终端设备的位置信息或者待添加终端设备的设备类型；以及在确定出待添加终端设备的基本信息匹配汇聚单元510的感兴趣信息时，在主路由表中添加待添加终端设备的路由信息。
作为一种可选的实施方式，物联网接入节点520还用于在确定出离线终端设备的基本信息不匹配汇聚单元510的感兴趣信息时，删除主路由表中离线终端设备的路由信息。
作为一种可选的实施方式，物联网接入节点520还用于在自身无线网络覆盖范围内侦听终端设备，以确定出处于在线状态的终端设备530，作为在线终端设备之后，接收自身无线网络覆盖范围内的在线终端设备发送的数据信息，数据信息携带在线终端设备的位置信息或者在线终端设备的设备类型；根据在线终端设备与物联网接入节点520的主路由表，确定主路由表是否记载有在线终端设备的路由信息；在确定出主路由表没有记载有在线终端设备的路由信息时，判断数据信息是否匹配汇聚单元510的感兴趣信息；在确定出数据信息匹配汇聚单元510的感兴趣信息时，将在线终端设备的路由信息添加进主路由表。
作为一种可选的实施方式，物联网接入节点520在确定出数据信息不匹配汇聚单元510的感兴趣信息时，判断物联网接入节点520的从路由表是否记载有在线终端设备的路由信息；物联网接入节点520在确定出从路由表没有记载有在线终端设备路由信息时，在从路由表中添加在线终端设备的路由信息。在该实施方式中，通过将不匹配汇聚单元510的感兴趣信息的终端设备的路由信息添加到从路由表中，作为转发优先级低于主路由表的路由表。
作为一种可选的实施方式，物联网接入节点520还用于在确定出在线终端设备发送的数据信息不匹配汇聚单元510的感兴趣信息时，判断物联网接入节 点520的从路由表是否记载有在线终端设备的路由信息；以及在确定出从路由表没有记载有在线终端设备路由信息时，在从路由表中添加在线终端设备的路由信息。
在本发明实施例中，通过实施图5所示的系统，确定出主路由表中记载有路由信息、但是却未处于在线状态的离线终端设备，进一步确定离线终端设备是汇聚单元感兴趣的终端设备、且离线时长满足预设时长后，从主路由表中删除该离线终端设备的路由信息，以结合汇聚单元感兴趣信息，更新物联网路由表，有助于实现汇聚单元对数据信息的筛选和收集。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储介质中，存储介质包括只读存储器(Read-Only Memory，ROM)、随机存储器(Random Access Memory，RAM)、可编程只读存储器(Programmable Read-only Memory，PROM)、可擦除可编程只读存储器(Erasable Programmable Read Only Memory，EPROM)、一次可编程只读存储器(One-time Programmable Read-Only Memory，OTPROM)、电子抹除式可复写只读存储器(Electrically-Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储器、磁盘存储器、磁带存储器、或者能够用于携带或存储数据的计算机可读的任何其他介质。
以上对本发明实施例公开的一种结合汇聚单元信息的物联网路由表更新方法及系统进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (10)

  1. 一种结合汇聚单元信息的物联网路由表更新方法，其特征在于，包括：
    汇聚单元向物联网接入节点下发路由表更新指示信息，所述路由表更新指示信息包括所述汇聚单元的感兴趣信息，所述感兴趣信息包括所述汇聚单元的感兴趣位置信息或者所述汇聚单元的感兴趣设备类型；
    所述物联网接入节点在自身无线网络覆盖范围内侦听终端设备，以确定出处于在线状态的终端设备，作为在线终端设备；
    所述物联网接入节点根据所述在线终端设备与所述物联网接入节点的主路由表，确定出路由信息记载在所述主路由表中却未处于在线状态的终端设备，作为离线终端设备；
    所述物联网接入节点获取所述离线终端设备的基本信息，以及判断所述离线终端设备的基本信息是否匹配所述汇聚单元的感兴趣信息，所述离线终端设备的基本信息包括所述离线终端设备的位置信息或者所述离线终端设备的设备类型；
    所述物联网接入节点在确定出所述离线终端设备的基本信息匹配所述汇聚单元的感兴趣信息时，启动离线计时以获得所述离线终端设备的离线时长；
    所述物联网接入节点判断所述离线时长是否满足预设时长；
    所述物联网接入节点在确定出所述离线时长满足所述预设时长时，删除所述主路由表中所述离线终端设备的路由信息。
  2. 根据权利要求1所述的方法，其特征在于，所述物联网接入节点根据所述在线终端设备与所述物联网接入节点的主路由表，确定出路由信息记载在所述主路由表中却未处于在线状态的终端设备，作为离线终端设备之后，所述方法还包括：
    所述物联网接入节点根据所述在线终端设备与所述物联网接入节点的主路由表，确定出路由信息未记载在所述主路由表中的在线终端设备，作为所述物联网接入节点自身无线网络覆盖范围内的待添加终端设备；
    所述物联网接入节点获取所述待添加终端设备的基本信息，以及判断所述待添加终端设备的基本信息是否匹配所述汇聚单元的感兴趣信息；所述待添加终端设备的基本信息包括所述待添加终端设备的位置信息或者所述待添加终端设备的设备类型；
    所述物联网接入节点在确定出所述待添加终端设备的基本信息匹配所述汇聚单元的感兴趣信息时，在所述主路由表中添加所述待添加终端设备的路由信息。
  3. 根据权利要求1所述的方法，其特征在于，所述物联网接入节点在自身无线网络覆盖范围内侦听终端设备，以确定出处于在线状态的终端设备，作为在线终端设备之后，所述方法还包括：
    所述物联网接入节点接收自身无线网络覆盖范围内的所述在线终端设备发送的数据信息，所述数据信息携带所述在线终端设备的位置信息或者所述在线终端设备的设备类型；
    所述物联网接入节点根据所述在线终端设备与所述物联网接入节点的主路由表，确定所述主路由表是否记载有所述在线终端设备的路由信息；
    所述物联网接入节点在确定出所述主路由表没有记载有所述在线终端设备的路由信息时，判断所述数据信息是否匹配所述汇聚单元的感兴趣信息；
    所述物联网接入节点在确定出所述数据信息匹配所述汇聚单元的感兴趣信息时，将所述在线终端设备的路由信息添加进所述主路由表。
  4. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    所述物联网接入节点在确定出所述离线终端设备的基本信息不匹配所述汇聚单元的感兴趣信息时，删除所述主路由表中所述离线终端设备的路由信息。
  5. 根据权利要求3所述的方法，其特征在于，所述方法还包括：
    所述物联网接入节点在确定出所述数据信息不匹配所述汇聚单元的感兴趣信息时，判断所述物联网接入节点的从路由表是否记载有所述在线终端设备的路由信息；
    所述物联网接入节点在确定出所述从路由表没有记载有所述在线终端设备路由信息时，在所述从路由表中添加所述在线终端设备的路由信息。
  6. 一种结合汇聚单元信息的物联网路由表更新系统，其特征在于，包括：
    汇聚单元，用于向物联网接入节点下发路由表更新指示信息，所述路由表更新指示信息包括所述汇聚单元的感兴趣信息，所述感兴趣信息包括所述汇聚单元的感兴趣位置信息或者所述汇聚单元的感兴趣设备类型；
    所述物联网接入节点用于在自身无线网络覆盖范围内侦听终端设备，以确定出处于在线状态的终端设备，作为在线终端设备；
    所述物联网接入节点还用于根据所述在线终端设备与所述物联网接入节点的主路由表，确定出路由信息记载在所述主路由表中却未处于在线状态的终端设备，作为离线终端设备；
    所述物联网接入节点还用于获取所述离线终端设备的基本信息，以及判断所述离线终端设备的基本信息是否匹配所述汇聚单元的感兴趣信息，所述离线终端设备的基本信息包括所述离线终端设备的位置信息或者所述离线终端设备的设备类型；
    所述物联网接入节点还用于在确定出所述离线终端设备的基本信息匹配所述汇聚单元的感兴趣信息时，启动离线计时以获得所述离线终端设备的离线时长；
    所述物联网接入节点还用于判断所述离线时长是否满足预设时长；
    所述物联网接入节点还用于在确定出所述离线时长满足所述预设时长时，删除所述主路由表中所述离线终端设备的路由信息。
  7. 根据权利要求6所述的系统，其特征在于，所述物联网接入节点还用于在根据所述在线终端设备与所述物联网接入节点的主路由表，确定出路由信息记载在所述主路由表中却未处于在线状态的终端设备，作为离线终端设备之后，根据所述在线终端设备与所述物联网接入节点的主路由表，确定出路由信息未记载在所述主路由表中的在线终端设备，作为所述物联网接入节点自身无线网络覆盖范围内的待添加终端设备；获取所述待添加终端设备的基本信息，以及判断所述待添加终端设备的基本信息是否匹配所述汇聚单元的感兴趣信息；所述待添加终端设备的基本信息包括所述待添加终端设备的位置信息或者所述待添加终端设备的设备类型；以及在确定出所述待添加终端设备的基本信息匹配所述汇聚单元的感兴趣信息时，在所述主路由表中添加所述待添加终端设备的路由信息。
  8. 根据权利要求6所述的系统，其特征在于，所述物联网接入节点还用于在自身无线网络覆盖范围内侦听终端设备，以确定出处于在线状态的终端设备，作为在线终端设备之后，接收自身无线网络覆盖范围内的所述在线终端设备发送的数据信息，所述数据信息携带所述在线终端设备的位置信息或者所述 在线终端设备的设备类型；根据所述在线终端设备与所述物联网接入节点的主路由表，确定所述主路由表是否记载有所述在线终端设备的路由信息；在确定出所述主路由表没有记载有所述在线终端设备的路由信息时，判断所述数据信息是否匹配所述汇聚单元的感兴趣信息；在确定出所述数据信息匹配所述汇聚单元的感兴趣信息时，将所述在线终端设备的路由信息添加进所述主路由表。
  9. 根据权利要求7所述的系统，其特征在于，
    所述物联网接入节点还用于在确定出所述离线终端设备的基本信息不匹配所述汇聚单元的感兴趣信息时，删除所述主路由表中所述离线终端设备的路由信息。
  10. 根据权利要求8所述的系统，其特征在于，所述物联网接入节点还用于在确定出所述数据信息不匹配所述汇聚单元的感兴趣信息时，判断所述物联网接入节点的从路由表是否记载有所述在线终端设备的路由信息；以及在确定出所述从路由表没有记载有所述在线终端设备路由信息时，在所述从路由表中添加所述在线终端设备的路由信息。
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