7 results about "Protocol stack" patented technology

The invention discloses an embedded type WIFI module. The embedded type WIFI module comprises a software part and a hardware part. The hardware part comprises a microcontroller chip, a WIFI chip, a program memory chip, a filter, a first crystal oscillator, a second crystal oscillator and a power switch tube, wherein the WIFI chip is connected with the microcontroller chip through data signals, the microcontroller chip is connected with the program memory chip through serial external interfaces, the WIFI chip and the microcontroller chip are connected with the power switch tube, the WIFI chip is connected with the filter and the first crystal oscillator, and the microcontroller chip is connected with the second crystal oscillator. The software part comprises a module interface management unit, an application program module, a webpage server, a miniaturized TCP/IP protocol stack, a WIFI driving module, a bottom layer hardware interface driver and a real-time operating system module, wherein the real-time operating system module is used as a framework, and the module interface management unit, the application program module, the webpage server, the miniaturized TCP/IP protocol stack, the WIFI driving module and the bottom layer hardware interface driver are integrated on the real-time operating system module. The embedded type WIFI module has the advantage of being small in size.

The invention belongs to the technical field of bus networks, and discloses a real-time EtherCAT master station implementation method for a Window platform, and the method comprises the steps that anapplication program interface module provides an interface for operating an EtherCAT master station protocol stack for an application program; the EtherCAT master station protocol stack module runs ina window kernel to realize an EtherCAT protocol and provide a communication function of periodic process data and non-periodic data; the real-time optimization module provides a high-precision timingperiod for periodic process data communication, and improves the real-time performance of a periodic communication task. According to the invention, an EtherCAT protocol stack is realized under a window kernel; the timer with higher timing precision is realized by adopting a DPC timer, and transceiving and real-time processing of an EtherCAT periodic message are carried out; and the driving interface of the physical network port is directly used for transmitting and receiving data, so that the data delay time is reduced.

The invention discloses a service data communication method and system for an Ethernet switch. The method comprises the steps of packaging a private Ethernet head for received service data through a switching chip driver, transmitting the service data to a decision device, and enabling the decision device to distribute the service data packaged with the private Ethernet head to three heterogeneousprocessors; and enabling the heterogeneous processor to extract the service data by removing the private Ethernet head, and distribute the extracted service data to the corresponding application program. According to the invention, a protocol stack can be operated on three heterogeneous processors, and the switching chip drives the service data communication of the Ethernet switch operated on theother processor.

The invention discloses an improved KNX/EIB (Konnex/European Installation Bus) protocol stack-based intelligent home management system. The system comprises standard equipment, intelligent equipment, a KNX router, a central module CU (Control Unit) and a mobile intelligent terminal, wherein the standard equipment is connected with the KNX router through a KNX bus; the KNX router is interconnected with the CU; the CU and the intelligent equipment are accessed to a backbone network; the CU is meanwhile wirelessly connected with the intelligent terminal; the standard equipment meets the ISO/IEC 14543-3 standard, and comprises an extra hardware interface for outwardly broadcasting a summary annotation state and function of the equipment and transmitting a summary-based request to the CU to acquire service; the KNX router is used for transmitting mutual transformation of the KNX/EIB frame and an IP (Internet Protocol) frame for caching a message; the CU is used for configuration and monitoring of the network and service/resource discovery and remote control tasks of the standard equipment and the intelligent equipment for providing operation capacity for the standard equipment and the intelligent equipment; the standard equipment, the intelligent equipment, the KNX router, the CU and the intelligent terminal are communicated through the improved KNX/EIB protocol; the protocol comprises a micro summary layer.

The invention relates to the technical field of communication, in particular to a method and a device for operating quality of service. The method and the device are used for solving the problems that the system burden is increased and the system efficiency is reduced when frequent unlocking and locking operations are needed to operate the quality of service QoS existing in the prior art. The method comprises that: a QoS operation module packages a received QoS operational order into a data packet, and transmits the data packet to a protocol stack; and a data processing module acquires the data packet in the protocol stack, operates a QoS mapping list according to the QoS operational order when the acquired data packet comprises the QoS operational order, searches QoS contents corresponding to the data packet from the QoS mapping list when the acquired data packet does not comprise the QoS operational order, packages the searched QoS contents with the data packet and transmits the QoS contents and the data packet. The method can reduce the system burden, improve the system efficiency, and improve the system performance.

The invention discloses a cheating-based node hiding method, system and device for the Internet. The method comprises the following steps: replying a customized data packet containing spoofing information to a visitor through a constructed camouflage protocol stack when the target device receives a detection/scanning request from the external visitor, wherein the data packet replies to the visitor through equipment fingerprint information different from the target equipment, and the service type of the data packet is the same as the service type of the detection/scanning request of the visitor; enabling the target device to analyze the content of detection/scanning and the response content of the visitor to the data packet, and extracting the detection skill and evidence chain of the visitor to gradually enrich the detection capability of the camouflage protocol stack. The constructed camouflage protocol stack is used for replacing the protocol stack of the target equipment to reply the data packet to the visitor, so that the real information (fingerprint) of the target equipment is hidden, the target equipment is prevented from being attacked due to information leakage, and the security of the target equipment is improved.