WO2008067764A1

WO2008067764A1 - Method and system and device for managing zigbee network

Info

Publication number: WO2008067764A1
Application number: PCT/CN2007/071174
Authority: WO
Inventors: Zhihui Gu
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2006-12-08
Filing date: 2007-12-05
Publication date: 2008-06-12
Also published as: CN101197703A; CN101197703B

Abstract

Method and system and device for managing a Zigbee network. The Zigbee network includes a Zigbee network device need to be managed, and a managing information database is set in the Zigbee network device, and the managed object information is recorded in the managing information database. After the Zigbee network device receiving a managing message sent by the managing device, a corresponding managing operation is performed according to the managed object in the managing information database, or the Zigbee network device builds a managing information sent to the managing device according to the managing information database, and the managingdevice achieves the management to the Zigbee device according to the received managing information.

Description

Method, system and device for managing Zigbee network

[1] Technical field

[2] The present invention relates to the field of network communication technologies, and in particular, to an implementation scheme for managing a Zigbee network.

[3] Background Art

[4] Zigbee is a short-range wireless communication technology, which is based on IEEE.

The technology specified in the 802.15.4 standard serves as the physical layer and MAC (Media Access Control) layer standard. The Zigb ee Alliance defines the network layer and application layer related standards.

[5] Zigbee networks operate in the 868, 915MHz and 2.4GHz bands, with corresponding communication distances typically less than 100 meters and transmission rates below 250Kb/s. Therefore, Zigbee network has low speed, low cost, low power consumption, etc., and is mainly used in short-range wireless communication in the fields of industrial monitoring, home control, and sensor networks.

[6] In the Zigbee network, each node device can be divided into FFD (full-featured device) and RFD (reduced function device) according to the function of the node device in the Zigbee network. The FF D can be associated with the Zigbee network. Similarly, the FFD also has the ability to accept associations, and the RFD can only be associated with the network as a stub node.

[7] Therefore, Zigbee's ad hoc network function can be realized through FFD, specifically to build a large Zigbee network through FFD's hierarchical association. The network constructed by Zigbee ad hoc network function can be divided into: star network, tree network and mesh network according to its topology and data forwarding form.

[8] With the rapid development of network communication technology and the large number of applications of Zigbee networks, many Zigbee networks have attempted to establish interoperability with widely used external communication networks (such as the Internet, telecommunication networks, etc.) so that Zigbee networks and external devices can be realized. The network has more extensive information exchange, that is, the Zigbee network has gradually expanded its application in the field of telecommunications networks.

[9] With the large number of applications of Zigbee networks, the requirements for the reliability and manageability of Zigbee networks are increasing. However, there is currently no implementation solution for managing Zigbee networks. Therefore, for Zigbee The management of the network cannot be realized, which limits the application of the Zigbee network. [10] Summary of the invention

The embodiment of the invention provides a method, system and device for managing a Zigbee network, so that the Zigbee network can be managed to improve the reliability and manageability of the Zigbee network.

[12] A method for managing a Zigbee network, establishing a management information base in a Zigbee network device as a managed device, wherein the management information library records the managed object information, and the process of managing the Zigbee network device Includes:

[13] The Zigbee network device receives the management message sent by the management device, where the management message carries the indication information of the management operation; the Zigbee network device performs the correspondence according to the indication information carried in the message and the information in the management information database. Management operations to implement management of Zigbee network devices;

[14] Or,

[15] The Zigbee network device constructs a management message sent to the management device according to the management information base, and the management message carries the indication information of the management operation, and the information management device carried according to the management message can implement the Zigbee network. Management of equipment.

[16] A system for managing a Zigbee network, comprising: a management device and a Zigbee network device as a managed device, wherein the managed device is provided with a management information library, wherein the management information database records the managed object information; among them,

[17] The management device is configured to send a management message to the managed device, where the management message carries the indication information of the management operation; after the managed device receives the management message, according to the indication The information and the managed object information in the management information base perform a corresponding management operation;

[18] Or,

[19] The Zigbee network device is configured to construct, according to the management information base, a management message sent to the management device, where the management message carries indication information of a management operation; and the management device receives the The information carried by the management message implements management of the Zigbee network device.

[20] — Zigbee network equipment, including:

[21] Management information base for recording information of managed objects;

[22] a management operation execution unit, configured to perform a corresponding management operation according to the indication information carried in the management message and the managed object information recorded in the management information database after receiving the management message sent by the management device, or Constructing a management message sent to the management device according to the management information base, and the tube The management message carries the indication information of the management operation.

[23] It can be seen from the technical solutions provided by the foregoing embodiments of the present invention that the embodiments of the present invention can implement management for a Zi gbee network, thereby effectively improving the manageability and reliability of the Zigbee network.

[24] BRIEF DESCRIPTION OF THE DRAWINGS

1 is a schematic structural diagram of an embodiment of a management system according to an embodiment of the present invention;

2 is a schematic structural diagram of a system implemented based on SNMP according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an SNMP-based protocol stack according to an embodiment of the present invention; FIG.

4 is a schematic structural diagram of a MIB library in an embodiment of the present invention;

[29] FIG. 5 is a schematic diagram of an embodiment of a packet encapsulation manner implemented by each functional entity in FIG. 2;

[30] FIG. 6 is a schematic diagram of an embodiment of a management operation process based on the system shown in FIG. 2.

[31] Detailed implementation

[32] In the method for managing a Zigbee network according to an embodiment of the present invention, the Zigbee network includes a Zigbee network device (referred to as a managed device) that needs to be managed, and establishes management in a Zigbee network device that is a managed device. The information base, the management information database records the managed object information, and the management information base can be set according to the attributes and characteristics of the Zigbee network device, and the management of the managed device is performed during the management process of the Zigbee network. The operation specifically includes at least one of configuration management operation information, performance management operation information, and failure management operation.

[33] Further, the implementation process of the management operation of the Zigbee network device based on the foregoing management information base may specifically include:

[34] (1) The processing of the management operation of the Zigbee network device by the management device to send the management message to the Zigbee network device, which may specifically include:

[35] (1) The Zigbee network device receives the management message sent by the management device, where the management message carries the indication information of the management operation;

[36] Thereafter, the management message includes at least one of the following two types of messages:

[37] Configuring an operation message, configured to perform configuration processing on a parameter in the managed device, where the message carries indication information indicating that the message is a configuration message; thus, when the managed device receives the message of the configuration operation, And determining, according to the indication information, that it is a configuration operation message, and then, according to the indication information carried in the configuration operation message and the information saved in the management information base, the corresponding operation is invoked. a function to perform a configuration operation on a corresponding parameter in the managed device;

[38] a performance management message, configured to query performance parameter information of the managed device, where the message carries indication information indicating that the message is a performance message of the query related performance parameter; thus, when the managed device receives After the performance management message, the performance management message may be determined according to the indication information, and then the corresponding operation function may be invoked according to the indication information carried in the performance management message and the information stored in the management information database. The operation of querying the corresponding performance parameter in the managed device enables the management device to query and obtain the performance parameter of the managed device, thereby implementing effective monitoring and management of the managed device.

[39] (2) The Zigbee network device performs a corresponding management operation according to the indication information carried in the message and the managed object information in the management information base;

[40] Specifically: searching for the corresponding managed object in the management information base according to the information carried in the received message

And determining, according to the indication information carried in the message, a management operation that needs to be performed, and then, by calling a corresponding operation function, implementing a management operation for the corresponding managed object.

[41] (2) The Zigbee network device sends a management message to the management device to implement management of the Zigbee network device, which may include:

[42] The Zigbee network device may construct a management message sent to the management device according to the management information base, and the management message carries the indication information of the management operation, so that the management device carries the information according to the received management message. Implement management of Zigbee network devices;

[43] For example, the management operation for the managed device may further include a fault management operation, specifically, monitoring the working parameters of the managed device according to the fault management policy information configured in advance in the managed device, for example, being managed The corresponding fault management policy information is set in the device: periodically, the monitoring function of a parameter is used to monitor the parameter and report the fault management message, or periodically, the monitoring function of a parameter is periodically used to monitor the parameter, and If the parameter meets the predetermined condition and is reported by the fault management message; or during the communication process, if the communication failure with the managed device is detected or the number of attempts exceeds the preset parameter, the fault management message is reported to the management station, The fault management message is specifically configured according to the management object information recorded in the management information base;

[44] The fault management operation process in the managed device may specifically be: In the Zigbee network, the corresponding fault management operation function is invoked according to the pre-configured fault management policy information, so as to facilitate network security. The parameter information is monitored and reported. Similarly, the reported message needs to carry indication information indicating that the message is a fault management message.

In the embodiment of the present invention, the corresponding management message may be encapsulated in the application layer, the network layer or the data link layer packet identified by the Zigbee network, and the report is identified by the acknowledged field value of the application layer packet. The text is management information.

[46] Another embodiment of the present invention provides a system for managing a Zigbee network. The structure is as shown in FIG. 1 , and includes a management device and a managed device in a Zigbee network, where management information is set in the managed device. a management object is recorded in the management information base, and the management device is configured to send a management message to the managed device, where the management message is provided with indication information of the management operation, and the management device receives the management After the message, the corresponding management operation is performed according to the indication information and the managed object information in the management information base.

[47] The content of the management message specifically includes the foregoing, and is not mentioned here.

[48] In the system, the management device may be set in the Zigbee network, or may be set in other networks than the Zigbee network, and the following two cases are respectively described:

[49] (1) If the management device is set in the Zigbee network, the management device directly exchanges information with the managed device, that is, the corresponding management message can be directly sent to the managed device, and the managed device can also The message sent to the management device is directly transmitted to the management device;

[50] At the same time, since the management device is set in the Zigbee network, the management device and the managed device usually support the same protocol, so there is no need to perform corresponding protocol conversion processing;

[51] (2) If the management device is set in a network other than the Zigbee network, the management device can perform information interaction with the managed device through the access point device disposed in the Zigbee network, and if The management device is disposed in the external network, and the information may be exchanged between the gateway device in the external network and the access point device in the Zigbee network;

[52] Moreover, the management protocol used by the management device is different from the protocol supported by the Zigbee network, and the access point device in the Zigbee network needs to perform protocol conversion on the received message. Address translation, in order to convert the message format into a message format corresponding to the protocol identifiable by the receiving end, and convert the address information in the message into address information identifiable by the receiving end (ie, the source address indicated in the converted message and The destination address is the network address or link layer address that the receiver can recognize. After that, Transmitting the message that is identifiable by the receiving end to the receiving end; performing protocol conversion by the corresponding access point device can effectively reduce the implementation complexity of other managed devices in the Zigbee network, that is, simplifying the implementation of other devices .

[53] Still referring to FIG. 1, in the above system, the structure of the Zigbee network device provided by the embodiment of the present invention includes the following components:

[54] (1) Management information base, used to record management object information, such as the name of the managed object, corresponding code

, data structure and other description information;

[55] (2) a management operation execution unit, configured to: after receiving the management message sent by the management device, determine corresponding managed object information in the management information base according to information carried in the management message, and according to management The indication information in the message invokes a corresponding operation function to perform a corresponding management operation for the determined managed object;

[56] The management operation execution unit includes at least one of the following units:

[57] The configuration operation execution unit is configured to invoke a local operation function according to the information carried in the received configuration operation message, so as to implement configuration processing of the corresponding parameter on the local device;

[58] a performance management execution unit, configured to invoke a corresponding operation function according to the information carried in the performance management message of the received query performance related information, so as to implement a management operation for the corresponding managed object in the local management information base, Querying the performance parameter information of the managed device, and reporting the information to the management device, so that the management device can monitor and manage the performance of the managed device.

[59] The fault management operation execution unit is configured to monitor and report the working parameter information of the managed device to the management device, where the monitoring result is reported by the fault management message constructed based on the management information library, so as to facilitate the The working parameters of the management device are monitored and managed. For example, when an abnormal condition occurs in a certain operating parameter of the managed device, the security management operation execution unit can report the corresponding situation to the management device through the fault management message. In order to facilitate and take appropriate measures.

[60] In Fig. 1, only the specific implementation structure of a managed device is given, and the structures of other managed devices are the same, so they are not drawn one by one.

[61] In the specific implementation process, the management of the Zigbee network may be implemented based on an existing protocol, or may be managed based on a customized protocol. Where, if you use a custom protocol for the Zigbee network For management, the corresponding management implementation plan only needs to meet the management requirements based on the implementation scheme described above; however, if the Zigbee network is managed by the existing management protocol, the corresponding existing management needs to be considered comprehensively. The characteristics of the protocol and the characteristics of the Zigbee network are used to determine the management implementation that can be applied to the Zi gbee network.

[62] The implementation of the Zigbee network management using the existing management protocol will be described below. Because existing management protocols usually need to manage network devices based on some specific information, such as IP address information.

, specific device identification, etc., and the corresponding Zigbee network may not be able to provide the corresponding information directly, so

In the process of managing the Zigbee network based on the existing management protocol, the corresponding management protocol needs to be solved.

Zigbee network compatibility issues.

[63] In order to facilitate the understanding of the implementation scheme of Zigbee network management based on the existing management protocol, the following is an example of managing the Zigbee network with the existing SNMP (Simple Network Management Protocol) as the management protocol.

, the corresponding implementation plan is described in detail.

[64] In the process of managing the Zigbee network by using SNMP, in order to ensure optimal implementation, it is necessary to minimize the impact on the existing core network/backbone network and Zigbee network. Therefore, the following implementations need to be considered in the specific implementation process. Aspect factors:

[65] (1) Ensure that the SNMP management architecture remains basically unchanged on the core/backbone network side;

[66] (2) The management operations for the Zigbee network should be completed at the application layer as much as possible in order to minimize the changes in the design of the underlying protocol;

[67] (3) The protocol conversion, address translation and other functions required for easy identification of the SNMP protocol are selected in the Zi gbee network access point (AP) device to reduce the node devices in the Zigbee network (ie, managed) Equipment) The complexity of processing.

[68] A specific implementation process of implementing an embodiment of the present invention based on SNMP will be described below with reference to the accompanying drawings.

[69] The network structure for managing the Zigbee network based on SNMP is as shown in FIG. 2, wherein the management station (ie, the management device) is set in the core/backbone network, the network supports the IP protocol, and the managed device is the network established by Zigbee. A node device in the Zigbee network through the access point device and the GW of the core/backbone network

(ie gateway) associated.

[70] The specific implementation of each functional entity in Figure 2 will be introduced below: [71] (1) Management station, ie management equipment

[72] In the core/backbone network, the management station is mainly used to implement the management operation of the managed device in the Zigbee network by using the SN MP in the same management manner as the IP network; the management station supports the IP protocol, and The Zigbee network is managed by the UDP (User Datagram Protocol)-based SNMP protocol, that is, the SNMP protocol packet is sent or received to the managed device; the management station further includes an MIB (Management Information Base), and the MIB includes the Zigbee The network management object stores an address that can be recognized by the external network, such as an IP address, mapped by the network address of the managed device in the Zigbee network.

[73] (2) Gateway device

[74] In the core/backbone network, the gateway also supports the IP protocol, which is used for forwarding the received IP packet containing the SNMP packet according to the destination address, specifically: It can be included according to the destination IP address. The IP packet of the SN MP message is forwarded to the managed device or to the management station.

[75] (3) Zigbee network access point device, ie AP device

[76] In the Zigbee network, the Zigbee network access point device has the IP and Zigbee protocol stack. As shown in Figure 3, the access point device can implement address translation and protocol conversion functions, which can be encapsulated in IP. After the SNMP packets in the packet are extracted, they are re-encapsulated in the APDU (Application Layer Protocol Data Unit) of the Zigbee according to the corresponding protocol stack, and the IP address mapped by the managed device is converted to the managed device. An address in the Zigbee network, and configured to send Zigbee network layer packets, MAC frames, and physical layer frames to the managed device;

[77] Similarly, the access point device may also perform address and protocol conversion on the message that the managed device needs to send to the management device, and then send the message to the management device.

[78] In summary, the AP should support the IP protocol, UDP protocol, SNMP protocol, Zigbee protocol, and can be utilized.

The Zigbee network learns the managed device corresponding to the destination address of the management message by the IP address mapped by the network address of the management device, and forwards the management message to the corresponding managed device;

[79] It should be noted that if the AP device also acts as a managed device, it should also store the corresponding MIB.

, in order to achieve the corresponding managed functions.

[80] (4) Managed equipment

[81] The managed device is a managed node in the Zigbee network, that is, the Zigbee network device, which can accept the query of the performance parameters of the management station, manage the configuration parameters, and report the trap information to the management station (ie, The management device should support the Zigbee protocol and also include the MIB. The MIB contains the manageable objects of the node. Moreover, the managed device also needs to include an SNMP agent to encapsulate and decapsulate the SNMP in the APDU. The message is processed according to the information in the MIB.

[82] In the above network structure, all the manageable objects in the Zigbee network are included in the MIBs included in the management station and the managed device. In addition, Zigbee needs to be supplemented with the content of the MIB library, including: In order to maintain the consistency of MIB content in the backbone/core network, Zigbee

The management object in the MIB still uses the OID (object identifier), uses the ASN.1 syntax description, and uses the BE R (Basic Encoding Rules) encoding. In this embodiment, the MIB of the Zigbee network can be used as the MIB tree. Rg (the structure of MIB is a tree structure defined by the IETF, org is a branch, indicating that it is related to some organization, alliance, group related or related parameters defined by it) a branch under the node, so that it can join already exists The MIB defined by the IETF (Internet Engineering Task Force) is compatible with SNMP management in IP networks.

[83] The Zigbee

The branch structure in the MIB can be as shown in FIG. 4, and includes information in each hierarchical information base in the Zigbee network, and specifically includes: PHY IB (physical layer information base), MAC IB (MAC layer information base), and NWK IB (network) Layer information base) and APS

IB (application support sub-layer information base), etc.; the MIB may further include: binding information, specifically including binding table, neighbor table, etc.; profile (application configuration) information, specifically including Various application profiles defined in the Zigbee network, feature management objects under each profile; cluster library, specifically including Zigbee in cluster

The cluster command and status defined in the library; interface (interface) information, which can include the address information and traffic information of the node interface; enterprise (enterprise customization), which specifically includes the special attributes defined by the device vendor for its own products.

[84] In the network structure shown in FIG. 2, in order to maintain the uniformity of network management in the core/backbone network, the specifically utilized SNMP protocol messages include: SetRequest (configuration request), GetRequest (query request), GetNextRequest ( Query the next request), GetResponse (Query Response), Trap (trap) at least one of the five protocol messages.

[85] Because SNMP is an application layer protocol, the encapsulation of SNMP packets by the lower layer protocol depends on the underlying layer. The transmission medium and the protocol it supports. Therefore, the encapsulation of the network management protocol packet is as shown in Figure 5. The SNMP packet is encapsulated in the UDP packet between the management station and the Zigbee network access point device. In the packet, in the MAC frame, and in the physical layer frame, where:

[86] If the SNMP packet is sent by the management station to the AP, the destination address in the IP header is the IP address mapped by the Zigbee network managed device;

[87] If sent by the AP to the management station, the destination address in the IP header is the IP address of the management station;

[88] The MAC frame format depends on the underlying protocol, and the corresponding address is the MA C address of the next hop to the destination.

[89] Between the Zigbee network access point device and the managed device of the Zigbee network, the SNMP message is encapsulated in the APDU (Application Layer Protocol Data Unit) and NPDU (Network Layer Protocol Data Unit) defined and supported by the Zigbee protocol. ), MAC frames, and physical layer frames.

[90] Among them, the profile ID or cluster in the APDU

The ID can be set to a recognized value to identify the SNMP packet to be carried. If the SNMP packet is sent by the AP to the managed device, the destination address in the NPDU and MAC header is the network of the managed device in the Zigbee network. Address; If sent by the managed device to the AP, the destination address in the NPDU and the MAC frame header is the network address of the AP in the Zigbee network.

[91] Based on the above description with reference to Figs. 2 to 5, the implementation of the management operation flow for the Zigbee network based on SNMP is as shown in Fig. 6, which will be described in detail below.

[92] The process of managing the Zigbee network is the process in which the management station sends SNMP packets to the managed device, the managed device responds, and the managed device actively reports SNMP trap messages to the management station. Through these two processes, the configuration management, performance management, and fault management functions of the managed device can be completed.

[93] The management station sends an SNMP message to the managed device, and the managed device responds as an example.

The process of managing the Zigbee network is shown in Figure 6, which includes:

[94] Step 1, initiate a poll or an immediate SNMP message;

[95] Specifically, the management station constructs a SNM P message according to the stored MIB library information, the managed Zigbee network, and the node information thereof, and the message may be a SetRequest message or a GetRequest message sent by the poll, for the Zi Configured or queried by managed devices in the gbee network; [96] Step 2, the packet is encapsulated in a UDP packet;

[97] After the SNMP packet is delivered to the lower layer, it is encapsulated in a UDP packet, and the corresponding port number is 161, and the encapsulated content is the SNMP packet described in step 1.

[98] Step 3. Encapsulate UDP packets in an IP packet.

[99] After the UDP packet is delivered to the lower layer, it will be encapsulated in an IP packet. The destination address of the IP packet is the IP address mapped by the managed device, so that the IP packet can be sent to the managed device.

[100] Step 4: Encapsulating the IP packet in a frame based on an underlying protocol;

[101] Specifically: Depending on the transmission medium and protocol used by the underlying layer, the IP packet will be encapsulated in the MAC frame and the physical layer frame, and transmitted from the management station to the gateway device (ie, GW) of the backbone/core network;

[102] Steps 1 to 4 above are the processing implemented in the management station, and then the corresponding SNMP management message is sent to the gateway device, that is, the GW device;

[103] Step 5: After receiving the frame containing the SNMP packet, the gateway device decapsulates the frame to extract the IP packet containing the SNMP packet from the received MAC frame.

[104] Step 6, at the network layer, according to the destination IP address of the IP packet, according to the routing table, the gateway forwards the IP packet to the access point device of the managed Zigbee network;

[105] Step 7: The forwarded IP packet containing the SNMP packet also needs to be transmitted in the MAC frame and the physical layer frame depending on the underlying protocol.

[106] afterwards, the IP packet will be transmitted to the Zigbee network access point device;

[107] Step 8, the Zigbee network access point device receives the frame containing the SNMP message sent by the management station, decapsulates the frame, and extracts the IP packet from the frame;

[108] Step 9, the access point device continues to extract the UDP packet containing the SNMP packet from the IP packet, and according to the port number 161 of the UDP packet, the packet is encapsulated and used to manage the managed device. Operating SNM

P message;

[109] Step 10: The access point device extracts the SNMP packet from the UDP packet, and learns that the SNMP packet is sent to the managed device in the Zigbee network from the destination IP address of the IP packet obtained in step 8.

[110] Step 11, the encapsulated SNMP packet is encapsulated in the APDU defined by the Zigbee standard, and the profile ID or cluster in the APDU header.

A recognized value is used in the ID to identify that the APDU encapsulates an SNMP packet. [111] Step 12, the APDU is delivered to the lower layer, encapsulated in the NPDU defined by the Zigbee standard, and the destination address field of the NPDU header is the network address of the managed device of the Zigbee network;

[112] The network address of the managed device is determined according to the destination IP address (that is, the IP address of the managed device) described in step 8, and the mapping relationship saved in the access point device;

[113] Step 13. The NPDU is transmitted to the lower layer and encapsulated into the MAC frame and the physical frame on which the Zigbee standard depends.

The Zigbee network access point device sends the managed device to the Zigbee network, and the destination address field of the MAC frame header is the network address of the managed device in the Zigbee network;

[114] After routing and forwarding in the Zigbee network, the managed device can receive the frame containing the SNMP message;

[115] Step 14. The managed device extracts an SNMP packet from the frame, and is configured by a profile ID or a cluster in the APDU header.

The ID identifies that the packet is an SNMP packet and is processed by the SNMP agent in the managed device.

[116] Step 15, because the SNMP message is encoded in the management station by using the BER (Basic Encoding Rules) encoding method, the managed device first performs the decoding operation;

[117] Step 16: The managed device performs security authentication on the received SNMP packet according to the community identifier stored by the node, and compares the stored community with the community of the SNMP header. If the community is consistent, the corresponding authority may be performed. Operation, inconsistent, report to the management station;

[118] wherein the SNMP community name is a string representing a management group consisting of a specific NMS and a proxy, and members of the community management group use a simple password to identify the identity;

[119] Step 17, after the foregoing decoding and security authentication process, the managed device searches for the presence or absence of the management object in the MIB of the local node according to the management object OID identifier in the SNMP packet.

[120] Step 18, if the corresponding management object is found, according to the content of the SNMP message, the corresponding function is invoked to perform a corresponding management operation on the management object, and step 19 is performed;

[121] Of course, if the corresponding management object is not found, the GetResponse message is directly reported to the management station, that is, step 19 is performed;

[122] Step 19: The managed device constructs an SNMP response message (ie, a GetResponse message), uses ASN.1 to perform syntax description, and uses BER coding to perform coding; [123] Step 20, the corresponding SNMP response message will be encapsulated in the APDU, and similarly, it needs to be profiled here.

The ID or cluster ID identifies the SNMP packet encapsulated in it.

[124] Step 21: The APDU is transmitted to the lower layer and encapsulated in the NPDU. The destination address field of the NPDU header is the network address of the access point device.

[125] Step 22: The NPDU is encapsulated into a MAC frame and a physical layer frame in turn, and the destination address field of the MAC frame header is a network address of the access point device.

[126] The frame is forwarded to the access point device through the routing information of the Zigbee network;

[127] Step 23, the access point device receives the frame, and according to the profile ID or cluster of the APDU header

The identifier of the ID is found to contain the SNMP packet. Therefore, the SNMP packet is extracted from the received frame. [128] Step 24: The SNMP packet is encapsulated in the UDP packet and the IP packet.

[129] The port number of the UDP packet header is the port number corresponding to SNMP (161/162), and the destination address field of the IP header is the IP address of the management station.

[130] Step 25: The access point device encapsulates the IP packet in a MAC frame and a physical layer frame that are dependent on the underlying protocol, and forwards the packet to the management station, specifically, to the management station by using the gateway;

[131] Step 26: The gateway of the core/backbone network receives the IP packet containing the SNMP response message, and forwards the IP packet to the management station according to the destination IP address of the routing table and the IP packet;

[132] Step 27: The management station extracts the SNMP response message from the received frame, and further reports to the management program of the user interface to perform subsequent processing.

[133] Through the above steps, the management operations initiated by the management station in the core sliding network to the Zigbee network can be completed. Similarly, if the management operation is initiated by the managed device in the Zigbee network, step 19 and subsequent subsequent steps may be invoked to complete the management operation of reporting the Trap trap event to the management station.

[134] It can be seen that although the Zigbee network where the managed object is located does not support the IP protocol, and the Zigbee network where the management station is located and the Zigbee network where the managed device is located is a heterogeneous network, the management station is still completed through the above process. SNMP-based network management for Zigbee networks. Moreover, the above process can maintain the core/backbone network without major changes in the management architecture, and can also make the architecture of the Zigbee network node device not greatly changed.

[135] In addition, in the configuration shown in FIG. 2, the management station may also be in a non-core A trunk network outside the Zigbe e network, or the management station may also be located. Within the Zigbee network Ministry. If the management station processes the internal Zigbee network, the management station can directly encapsulate the SNMP packet in the protocol packet defined by Zigbee and send it to the managed device.

[136] In the protocol stack shown in FIG. 3 above, if the Zigbee network supports the IP protocol, the management process may not perform address and protocol conversion on the Zi gbee network access point device, but is directly forwarded by the managed device. The IP packet containing the SNMP packet is parsed and processed, and the response packet can be directly encapsulated in the IP packet and sent to the management station.

[137] In the MIB library shown in FIG. 4 above, it is obvious that different branch methods or naming methods can also be used to manage and maintain each management object, that is, FIG. 4 is only an example of the MIB library, and the specific application process is not Limited to the structure of the management information base.

[138] In summary, the foregoing embodiments of the present invention provide functions such as configuration management, performance management, and fault management for a Zigbee network, thereby making the Zigbee network manageable, thereby facilitating the Zigbee network. Promote the application.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of within the technical scope disclosed by the present invention. Changes or substitutions are intended to be included within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

Claim

[1] 1. A method for managing a Zigbee network, characterized in that, as a managed device

A management information base is set up in the Zigbee network device, and the managed object information is recorded in the management information base. The management of the Zigbee network device includes:

The Zigbee network device receives the management message sent by the management device, where the management message carries the indication information of the management operation; the Zigbee network device performs the corresponding management according to the indication information and the managed object information in the management information database. Operation to implement management of Zigbee network devices; or,

The Zigbee network device constructs a management message sent to the management device according to the management information base, and the management message carries the indication information of the management operation, and implements management of the Zigbee network device according to the information carried by the management message.

[2] 2. The method according to claim 1, wherein the management message comprises at least one of the following messages:

Configuring an operation message, configured to perform configuration processing on a parameter in the Zigbee network device, where the message carries indication information indicating that the message is a configuration operation message;

a performance management message, configured to query performance parameter information of the Zigbee network device, where the message carries indication information indicating that the message is a performance management message;

The fault management message is used to report the monitoring result for the working parameter in the Zigbee network device, where the message carries the indication information indicating that the message is a fault management message.

[3] The method according to claim 1 or 2, wherein the management information base is set according to attributes and characteristics of the Zi gbee network device, and the management message is based on a simple network management protocol. SNMP management messages.

[4] 4, a system for managing a Zigbee network, comprising: a management device and a Zigbee network device as a managed device, wherein the managed device is provided with a management information library, and the management information database records Managed object information;

The management device is configured to send a management message to the managed device, where the management message carries the indication information of the management operation; after the management device receives the management message, according to the indication information and the Performing a corresponding management operation on the managed object information in the management information base; or,

The Zigbee network device is configured to construct, according to the management information base, a management message sent to the management device, where the management message carries indication information of a management operation; and the management device is configured according to the received management message. The information implements the management of Zigbee network devices.

[5] 5. The system according to claim 4, wherein the Zigbee network device comprises at least one of the following:

Configuring an operation execution unit, configured to perform parameter configuration processing on the Zigbee network device according to the received configuration operation message;

a performance management execution unit, configured to query performance parameter information of the Zigbee network device according to the received performance management message, and report the performance parameter information to the management device;

The fault management operation execution unit is configured to monitor the working parameter information of the Zigbee network device according to the pre-configured fault management policy information, and report the fault management message to the management device.

[6] The system according to claim 4 or 5, wherein the management device is disposed on the Zi gbee network, and the management device directly exchanges information with the managed device; or The management device is disposed in the external network, and the management device exchanges information with the managed device through the access point device disposed in the Zigbee network.

[7] 7. The system according to claim 6, wherein the management device is disposed in an external network, and further passes through a gateway device in the external network and an access point in the Zigbee network. Information exchange between devices.

[8] 8. The system according to claim 6, wherein the management protocol used by the management device and the protocol underlying the protocol are different from those supported by the Zigbee network, and the Zigbee is The access point device in the network also performs protocol conversion and address translation on the received message, converts it into a protocol and address that the receiving end can recognize, and sends the converted message to the receiving end.

[9] 9. The system according to claim 6, wherein if the management device is set in an external network, the destination address included in the management message sent by the management device to the managed device is the managed device. An address mapped by the Zigbee network address that can be recognized by the external network, and Based on this address, management messages can be forwarded to the Zigbee network access point device.

[10] The system according to claim 6, wherein in the Zigbee network, the management message is encapsulated in an application layer, a network layer or a data link layer message identified by the Zigbee network.

And identifying the packet as a management message by using the acknowledged field value of the application layer packet.

[11] 11. The system according to claim 6, wherein the management protocol used by the management device comprises SNMP.

[12] 12. A Zigbee network device, comprising:

a management information base for recording information of managed objects;

a management operation execution unit, configured to perform a corresponding management operation according to the indication information carried in the management message and the managed object information recorded in the management information database after receiving the management message sent by the management device, or The management information base constructs a management message sent to the management device, and the management message carries indication information of the management operation.

[13] 13. The device according to claim 12, wherein the management operation execution unit comprises at least one of the following units: