52 results about "COAP protocol" patented technology

The invention discloses a method and device for delivering M2M (machine to machine) service messages, relating to the communication field and being used for realizing message intercommunication of devices for supporting a constrained application protocol (CoAP) and devices for supporting other application layer protocols in an M2M service. The method comprises the following steps: receiving a first protocol message sent by a sender; converting the first protocol message into a second protocol message; and sending the second protocol message to a receiver, wherein one of the first protocol message and the second protocol message is a CoAP message, and the other one is a protocol bearing message. The method and device disclosed by the invention can be applied to mutual conversion between the CoAP message and the protocol-bearing message.

The invention provides a method, a device and a system of transmitting data safely. The method of transmitting data safely is characterized by comprising that a user terminal sends a resource access request carrying a first authentication request header field to a server, wherein the first authentication request header field comprises user identification and server identification; a request response returned by the server is received, the request response comprises a second authentication request header field and a message body, and the second authentication request header field carries a third integrity summery; and after the server receives the resource access request, the third integrity summery is further obtained by calculation, wherein the calculation is carried out by using a third a message digest algorithm according to a user password and message contents and by using, and the message body carries the message contents encrypted by a shared key. The user password is obtained from the storage area of the server according to the user identification carried by the resource access request. The machine-to-machine (M2M) transmission based on a constrained application protocol (CoAP) is enabled to be carried out safely and reliably.

The embodiment of the invention provides a firmware updating method and device. The method comprises the steps of acquiring updated version information of firmware; determining a target data block forthe firmware of the updated version; sending an acquisition request for the target data block to a server based on a CoAP protocol; receiving a target data block returned by the server based on a CoAP protocol; judging whether a next data block for the firmware of the updated version exists or not; ifyes, returning to the step of determining the target data block for the firmware of the updated version, the target data block being the next data block; if not, it is determined that downloading of the firmware of the updated version is completed. The embodiment of the invention provides a firmware updating mode based on a CoAP protocol, so that a terminal gets rid of dependence on a TCP protocol, and the terminal which does not support the TCP protocol can also normally realize firmware updating. Moreover, the CoAP protocol is customized for the Internet of Things equipment with limited resources, so that the resource occupation is extremely small, and the network anti-interference performance is high.

The invention relates to a web service-based intelligent household control system, which is characterized by comprising an intelligent device with a web browser, a home gateway and a home terminal. According to the technical scheme of the invention, the information transmission efficiency is improved based on the CoAP protocol. Meanwhile, the operation modes of the system are conveniently controlled based on the Web service. The system can be switched among a plurality of control modes and the user rights of the system can be preset.

A device for use in transmitting a message includes a memory device including an application layer that includes a constrained application protocol and a processor coupled to the memory device. The processor is programmed to identify a message to be transmitted through a data link to at least one other device within a network, determine a quality of the data link, and determine a segment size based on the data link quality. The processor is also programmed to execute instructions within the application layer to form at least one message segment from the message such that a size of the at least one message segment is equal to the segment size. The device also includes a communication device configured to transmit the at least one message segment to the at least one other device.

The invention discloses a congestion control method for Internet of Things transmission in the technical field of network communication. On the basis of the draft CoCoA, every time when a sending end retransmits a CON message, the sending end repackages service data and allocates a new Message ID to obtain a message for retransmission; the sending end receives an ACK message from a receiving end and can uniquely determines the CON message triggering the ACK message; and the sending end receives the ACK message, can measure RTT obtained in the present communication and update the RTO by using the RTT so as to enhance the congestion control ability of the CoAP protocol. By adoption of the congestion control method disclosed by the invention, the probability of obtaining the RTT is also increased while the RTT measurement accuracy is improved, and the congestion control ability of the CoAP protocol can be effectively enhanced.

The invention relates to a method and device for registering in a Constrained Application Protocol (CoAP) network. The method comprises the following steps of: receiving a CoAP message carrying registering information, wherein the registering information is carried by one or more of an extensional CoAP message and a corresponding header field, an extensional header field, a message body or a uniform resource identifier (URI); and judging whether the CoAP message is sent by a contracted user, if so, storing the registering information, and otherwise, refusing a registering request corresponding to the CoAP message. In the method, a terminal can register for the current Internet protocol (IP) address of the terminal in a server or a platform in the network in time by sending the CoAP message carrying the registering information, so that the server or the platform can acquire the on-line state of the terminal in time, and ensure that the CoAP message sent to an identifier of the terminalcan be sent accurately.

A method is provided that includes determining, via data processing circuitry, error rate metrics of data transmissions over a constrained application protocol (CoAP) using a first CoAP segment size. The method further includes determining, via the data processing circuitry, a second CoAP segment size for the data transmissions based at least in part upon the error rate metrics.

The embodiment of the invention provides a method and a device of data communication in a constrained application protocol (CoAP). The method comprises the following steps of: receiving a request transmitted from a terminal; processing Via option information based on whether an agent node stores parameters and status of session corresponding to the request, wherein the Via option information is used for recording a request path and a response route; and transmitting the processed request. By the technical scheme, the stateless proxy can be realized, stateful proxy nodes and the stateless proxy nodes are allowed to exist simultaneously on the transmission path of the same session, and the routing information of the path in the protocol report can extract through the stateful proxy nodes and then delete the routing information so as to change to the routing information of the local storage route, thus shortening the routing information carried in the protocol message, increasing the usage efficiency of the proxy node resource, and reducing the communication delay or interruption caused by the proxy node rush or fault.

The present disclosure relates to capillary network gateway, CGW 12a, 12b, selection in a capillary network. In particular, the present disclosure relates to methods and arrangements for linking a machine device, MD 11, operating according to a local area radio access technology, RAT, in a capillary network, to a cellular network via a CGW 12a, 12b, wherein the capillary network comprises a plurality of CGWs that each have a connection to the cellular network. A plurality of MDs 11 is connected via a local area radio access technology, RAT, of the capillary network to the CGWs 12a, 12b which in turn are connected to respective radio base stations, RBSs, 21a, 21b of the cellular network. An MD 11 may be capable of setting up a link to the cellular network by means of multiple CGWs and thus a selection of CGW should be performed prior to establishing the link. A method for selecting the CGW comprises determining one or more dynamic properties for each of at least two CGWs of the plurality of CGWs, wherein the one or more dynamic properties relate to a traffic processing and forwarding capability of the respective CGW, and controlling selection of at least one CGW out of the at least two CGWs based on the determined one or more dynamic properties. The step of determining preferably comprises determining the traffic load experienced by the CGW, the channel quality of the CGW's connection to the cellular network and / or the radio access technology for the CGW's connection to the cellular network. The MD may be instructed to set up a local area radio connection to a CGW by means of an RPL message (Routing Protocol for Low-Power and Lossy Networks), a link layer message, a CoAP message (Constrained Application Protocol) or an OMA-LWM2M message (Open Mobile Alliance Lightweight Machine-to-Machine), or a broadcast or unicast Ipv6 router advertisement.

The invention discloses an Internet of Things device operation and maintenance management method, device and system based on a COAP protocol, an operation and maintenance management platform and a readable storage medium. According to the scheme, the method comprises the steps that according to a subscription mechanism of the COAP protocol, subscribing a state change event of an Internet of Thingsequipment; acquiring a COAP protocol-based notification message generated by the Internet of Things equipment when a state change event occurs in the Internet of Things equipment; and according to the notification message, locally executing a corresponding operation and maintenance management operation, or generating an operation message based on a COAP protocol and sending the operation messageto the Internet of Things equipment, so that the Internet of Things equipment executes a corresponding processing operation according to the operation message. Thus, according to the scheme, the operation and maintenance management function of the Internet of Things equipment is realized by utilizing a perfect interaction mechanism of the COAP, the integrity and the safety of the interaction process are ensured, and in addition, the COAP is realized based on the UDP, so that the expenditure on a memory and a network is effectively reduced.

An embodiment of the invention discloses a heterogeneous protocol interconnection method and a controller. The heterogeneous protocol interconnection method comprises the steps that: the controller receives a first CoAP message sent by a first terminal running an Internet-of-Things operating system through a CoAP protocol, and analyzes the first CoAP message to obtain a target address and a first control command contained in the first CoAP message, wherein the first control command is used for indicating to execute a preset operation in the Internet-of-Things operating system; the controller sends a second control command in an ALLJoyn framework to a second terminal indicated by the target address, so that the second terminal running the ALLJoyn framework executes the preset operation according to the second control command; and the second control command is used for indicating to execute the preset operation in the ALLJoyn framework, and the controller runs the ALLJoyn framework and the Internet-of-Things operating system. By adopting the heterogeneous protocol interconnection method and the controller, the control between the terminal running the Internet-of-Things operating system based on the CoAP protocol and the terminal running the ALLJoyn framework can be achieved.

Enhancements to the device management functionality within service layer architecture of a Gateway node are described. The SL application registration procedure can be enhanced for devices in support of device management. Functionality can be added to the service layer to initiate automated request notification for DM purposes. Lightweight SL Transport Protocol bindings can support sending multiple DM commands called DM Action Scripts with a specific focus on the Constrained Application Protocol (CoAP) Protocol.

The invention discloses a message conversion method based on SNMP and CoAP. Mutual conversion of an SNMP message and a CoAP message can be realized by use of an SNMP / CoAP adapter. The invention also discloses a wireless controller that comprises the SNMP / CoAP adapter for converting an SNMP request message sent by an SNMP proxy module into a CoAP request message, converting a CoAP response message of a CoAP service module into an SNMP response message and converting a push message of a wireless sensing node received by the CoAP service module into a Trap message of SNMP. According to the message conversion method, due to the mutual conversion of SNMP and CoAP, an SNMP manager is enabled to manage Internet-of-Things equipment based on a CoAP protocol by use of the wireless controller; an SNMP protocol can be effectively supported and efficient SNMP Internet-of-Things network management can be realized without replacing the sensing node.

There is provided mechanisms for making resources discoverable. A method is performed by a resource location mapping node. The method comprises acquiring scope information of a local network and location information enabling determination of specific locations of resources in the local network. The method comprises generating Constrained Application Protocol (CoAP) resource identifiers of the resources from the scope information and the location information. The method comprises providing the CoAP resource identifiers to a resource directory, thereby making the resources discoverable.

The invention relates to a CoAP proxy cache method based on node dormancy and router maintenance, and belongs to the technical field of application level. The CoAP proxy cache method is designed for the CoAP of resource limited IP network. The method comprises agency relation maintenance, cache resource information base maintenance and overdue approach detection, wherein overdue approach detection can reflect change of resource, occupies less storage resource, and provides convenience for user operation. The method comprises the advantages that support for node dormancy and route maintenance of the CoAP is enhanced, convenience is provided for operation of a periodic dormancy server, and the throughput and network time delay of a router can be effectively controlled.

The embodiment of the invention provides a message processing method and apparatus. The method is applied to a limited application protocol COAP server, the COAP server is a World-Wide-Web WEB server,and the method comprises the following steps: determining a source message issued to a COAP client, wherein the COAP client is a narrowband Internet of Things NB device; and converting the source message into a target message in a byte BYTE format, and sending the target message to the COAP client. By adoption of the message processing method and apparatus provided by the embodiment of the invention, the direct communication between the COAP server and the COAP client is achieved, the message does not need to be forwarded by using middleware, thereby avoiding waste of message resources, and improving the high availability of communication between the WEB server and the NB device. Furthermore, since a COAP protocol packet is relatively small, it is conducive to improving the communicationcapability between the WEB server and the NB device.

The invention discloses an MQTT protocol and COAP protocol fusion algorithm, which comprises the following steps: establishing a protocol fusion component, and connecting the component with a cloud server or terminal equipment, wherein the protocol fusion component comprises an MQTT server and a COAP server; judging protocol information used by the Internet of Things equipment and the terminal equipment; if the Internet of Things devices and the terminal devices adopt the same communication protocol, sending the collection information of the plurality of Internet of Things devices to the terminal devices or sending the collection information of the Internet of Things devices to the plurality of terminal devices; if the Internet of Things equipment and the terminal equipment do not adopt the same communication protocol, performing message conversion through the MQTT server and the COAP server; According to the invention, coexistence of TCP and UDP protocols is solved through the MQTT server and the COAP server, multi-protocol conversion is compatible, the original data transmission protocol of the Internet of Things equipment is not changed, and the cost is effectively reduced.

The invention provides a data packet processing method based on conversion between a CoAP protocol and an HTTP protocol. The method comprises the following steps: unpacking a CoAP data packet to be sent, and removing a data packet header to obtain a data load; judging whether the size of the data load is smaller than a set merging threshold value or not, and if yes, putting the data load into a data load queue; and merging the data loads in the data load queue based on a dynamic priority control strategy according to a set sending threshold, adding an HTTP packet header to obtain an HTTP data packet, and transmitting the HTTP data packet through a link. According to the data load merging method for conversion between the CoAP protocol and the HTTP protocol, data load merging is achieved, and the problem that when conversion between the CoAP protocol and the HTTP protocol is carried out, a long packet header is used for transmitting a short data load can be solved; and moreover, the method is simple and easy to use, and facilitates the improvement of link transmission efficiency.

The invention provides a method for supporting COAP equipment by a cloud service platform, which comprises the following steps: creating IoT Hub at Portal, and selecting a project quota at an IoT center to support IoT Edge; creating an IoT Edge device; deploying an IoT Edge Host; creating a Container Registry; deploying a COAP Module; and using a COAP Module in an IoT Edge device, and managing a device of a COAP protocol through a cloud interface. Existing COAP equipment is deployed to the cloud, the problem that traditional IoT equipment is difficult to be deployed to the cloud is solved, thecost of data storage and equipment management is saved, and the safety is improved, so that the pace of technological development of the Internet of Things is followed.

The invention discloses a dynamic timeout algorithm based on a CoAP protocol. The invention relates mainly to the technical field of Internet of Things communication. After a client sends a CON message, the client can track the number of ACK messages received for each CON message and the delay of receiving ACK messages for each CON message transmission, and the client can dynamically change its ACK_TIMEOUT. It is assumed that the client can modify ACK_TIMEOUT of a client-server link or a client-server link set of each individual client, ACK_TIMEOUT is set to the optimal value for the aspect tokeep the message exchange short or to minimize the number of requests to retransmit ACK messages that are received later than expected, the timeout value of CoAP retransmission mechanism is more reasonable and satisfies more links. The endpoint communication in LAN is more timely, and to some extent, the redundancy of CON message and ACK message is reduced, and the network congestion is reduced.

The invention relates to a communication system for enabling low-power consumption alarm equipment to quickly access an NB-IOT platform and method. The system comprises a smoke / temperature sensor detector, a manual alarm button and a sound-light alarm, wherein the smoke / temperature sensor detector can manually trigger the manual alarm button to send an alarm signal A; the alarm signal A is transmitted to the sound-light alarm in an LoRa wireless communication mode; the sound-light alarm sends sound and light warning signals and sends an alarm signal B at the same time; the alarm signal B can be transmitted to the NB-IOT platform at a COAP protocol through the NB-IOT module; and the NB-IOT platform finally transmits the alarm signal to a mobile phone APP client through the network. By adopting the above technical scheme, the time of alarm signal network access and transmission is greatly shortened, time is saved for person and property transfer in a fire area, and disaster avoidance anddisaster relief are more timely.

The invention discloses an MAC (Media Access Control) layer communication method on the basis of a fire fighting emergency light. The MAC layer communication method comprises the following steps of: firstly, carrying out offline time slot planning and carrying out clock synchronization; secondly, carrying out node network access and elimination; then distributing a time slot; and finally, uploading and downloading data. According to the invention, a conventional fire fighting emergency light communication mode is upgraded to a novel self-organizing multi-hop protocol which is on the basis of a space division TDMA (Time Division Multiple Access) technology, uses an IPv6 (Internet Protocol Version 6) / 6LoWPAN technology as a protocol stack standard and uses a CoAP (Constrained Application Protocol) packet as a communication carrier; and compared with an original communication protocol, the novel self-organizing multi-hop protocol has various advantages.

Methods for provisioning and managing Internet-of-Things (IoT) devices over a network using device based tunneled nodes are provided. In one aspect, a method includes receiving, by a first network device in a network, data originated from an Internet-of-Things (IoT) device; identifying a device type of the IoT device by analyzing data packets of the received data; obtaining, by the first network device, a device profile for the IoT device, wherein the device profile is used for provisioning the IoT device to access the network; and provisioning the IoT device using the device profile, whereinthe provisioning includes at least one of (1) identifying a tunneling attribute in the device profile; and (2) identifying a constrained application protocol (CoAP) parameter in the device profile, wherein the CoAP parameter is used to zero touch provision one or more device attributes of the IoT device. Systems and machine-readable media are also provided.

The invention belongs to the technical field of Internet of Things communication, and particularly relates to an internet-of-thing communication system and method based on middleware and an MQTT protocol. The internet-of-thing communication system comprises a communication equipment layer and a transmission layer. The communication equipment layer comprises HTTP protocol equipment, COAP protocol equipment, MQTT binary transmission equipment, TCP protocol equipment and UDP protocol equipment; the transmission layer sequentially comprises a data access layer, MQTT own protocol middleware and AMQP protocol internal data communication middleware from bottom to top; and the AMQP protocol internal data communication middleware is configured to be in communication connection with an upper layer service system. According to the invention, (1) through establishing various protocol communication equipment access middleware and data analysis middleware of the transmission layer, the internet-of-thing communication system of the invention is decoupled from a traditional service system and operates independently; and (2) TCP and UDP communication adopts a script engine to carry out data analysis, so that the data analysis process is simplified.

According to the power distribution Internet of Things network communication system based on the CoAP protocol, communication is carried out by using the same protocol in different network environments, so that the complexity of system communication is greatly reduced, and the problem that equipment is difficult to cooperate due to large difference of communication protocols of power distribution network equipment is avoided. According to the invention, a rapid communication line can be dynamically selected without according to a network environment where the power distribution Internet of Things terminal is located, efficient communication between a mobile application side and a power distribution Internet of Things intelligent terminal side is maintained, and rapid response of services is realized. The service type and the belonging application scene are determined according to the data packet interacted in the power distribution Internet of Things, the protocol mode is dynamically selected, and the service quality is improved.

The invention discloses a method for realizing instant messaging through an Internet of Things COAP protocol. The method comprises the following steps that Internet of Things terminal equipment uploads data packets, a middleware communication layer receives the data packets uploaded by the Internet of Things terminal equipment and sorts the data packets to obtain sorted data, and a WEB control platform obtains the sorted data of the middleware communication layer in real time, then generates various reports and sends the reports to a receiving platform. According to the method for achieving instant messaging through the COAP of the Internet of Things, the front end and the rear end are separately developed, developers can more clearly meet requirements, division of labor is clear, development efficiency is improved, subsequent maintenance and expansion are facilitated, modular development is adopted, all components are not coupled, and single-point faults and subsequent expansion parties are avoided.

The invention relates to a dynamic CoAP mode selection method and device based on UCB, and the method comprises the steps: obtaining the type of a data transmission mode of a CoAP protocol in a current data transmission scene, and determining the optimal data transmission mode of each data packet in a data transmission process based on an MAB transmission model. As the MAB transmission model is an online learning model, the data transmission mode combination strategy in the following transmission process can be determined in real time according to the transmission performance of the data packets which are transmitted in the data transmission process, so that the balance between the data transmission time delay and the packet loss rate is achieved on the whole, and the overall performance of the system is improved.