49 results about "Flat network" patented technology

The recursive time synchronization protocol method for wireless sensor networks provides a modified and extended RTSP method to make it work with clustered networks. In case of non-clustered or flat network, each node is assumed to be a clusterhead in order to run the RTSP method correctly. The RTSP method involves the election of a reference node, and compensation for offset and drift. Simulation results show that the extended RTSP method further improves the accuracy and energy consumption, i.e., it can provide an average accuracy of 0.23 μs in a large multi-hop clustered network while using only 1/7th of the energy consumed by FTSP in the long run.

Disclosed are a wireless communication system and method and an expansion unit of a flat network architecture. The wireless communication system comprises at least one baseband signal source, an expansion unit (EU) and at least one remote radio unit (RU) connected to the EU. By overlapping the baseband signals output by each baseband signal source, remote transmission and wireless coverage of multimode digital signals are achieved, thereby solving the problem of system performance degradation caused by the interaction of radio-frequency analogue signal transmission and optical transmission in the prior art.

The invention discloses a wireless communication system and a wireless communication method for a flat network architecture, and an extend unit. The wireless communication system comprises access unit (AU) subsystems, the EU and at least one radio remote unit (RU) connected with the EU. The EU is used for converting a downlink baseband high-speed signal transmitted by the AU subsystem into a downlink sub-baseband low-speed signal, and transmitting the downlink sub-baseband low-speed signal to the RU, so that the EU can be connected with the RU by a low-speed transmission link such as a category-5 cable, indoor coverage is facilitated, and difficulty and cost in network deployment are reduced; the wireless communication system supports the concatenation and stacking mode of the AU subsystems, so that the capacity extensibility of the system is improved; and in addition, the wireless communication system also can comprise a gateway (GW) subsystem, and the function of a radio network controller (RNC) is shifted down to the GW subsystem and the AU subsystem to further disintegrate and simplify the structure of the whole communication system, so that a network processing time delay and a transmission time delay are shortened.

The invention provides a method of wireless electricity transmission based on orthogonal frequency division multiplexing (OFDM). In terms of structure, based on an idea of saving network nodes and shortening time delay in data transmission, a flat network deploying manner is utilized, four layers of 'a terminal-access equipment-core network equipment-a main station of a power grid' are divided, network equipment is internet protocol (IP)-based and can be identified uniquely through an IP address in the main station of the power grid. In terms of physical channels, three-layer communication protocol systems is built up and comprises a layer of physics, a layer of data linkage and a layer of wireless sources control. Each layer uses a certain technological scheme and performs uploading and downloading of data. All layers converge and are integrated in the core network equipment, and achieve interacting with the main station of the power grid though a manner of wired communication and transmission of power data. According to the method of wireless electricity transmission based on OFDM, OFDM and other key technologies which are in line with the developing trend of the fourth-generation (4G) international main current mobile communication technology are combined with authorized frequency points in the power industry, so that application of an advanced wireless communication technology in data transmission in power service is guided and a reasonable and competitive wire transmission access is built up.

The invention relates to a system and method called autotopology of a network or advertising based network management which enables the analysis and automatic graphical and hierarchical representation of any hierarchical or flat network topology, especially a switched Ethernet (SE). The autotopology can be used for self-configured networks (for example by using zeroconf) and for any otherwise configured networks, especially using DHCP or manually configured networks. The use of zeroconf is called autoconfiguration. Autoconfiguration and autotopology enable a comfortable and safe administration of a network. Administration of a self-configured network using the autotopology data proceeds in a separate and low-priority sub-network (link local) so that the productive operation of the network remains undisturbed. The topology of the network is used as a clear possibility of administering a network. Administration of the network is possible immediately after determination of the topology.

The invention relates to a method for producing round network multifunctional device, which comprises a band intermission operator. The invention is characterized in that a flat network printer and a round network printer are distributed from the cloth inlet to the cloth outlet of the band intermission operator, wherein the flat network printer is disposed with a sliding support with a flat network stencil, a reciprocal drawing parallel motion transmitter at one side of the sliding support, and a lifting support for mounting the transmitter and the sliding support, and a lifting driver. The round network printer comprises a frame, a round network printer base on a track to reciprocally parallel move, and a reciprocal parallel motion transmitter for drawing the round network printer base. The round network printer base is disposed with a round network printer for continuously round network printing. The invention can combine flat network print and round network print, to improve product quality.

The invention discloses a network application system based on P2P and an application method thereof, wherein, the application method based on P2P comprises the following steps: a physical network based on P2P is mapped to a virtual flat network based on P2P; nodes in the network based on P2P are interacted with each other according to the message protocol based on XML in serverless condition. Distributed cooperative computing, parallel transaction processing and cloud calculative rudiment are realized by the invention.

The invention discloses a novel power utilization information collection system based on TD-LTE (time division-long term evolution) wireless broadband. The system comprises a power communication control center, an intelligent ammeter, an information control system, a TD-LTE communication system, a radio-frequency processing device, a concentrator and a collector. The system disclosed by the invention adopts the TD-LTE technology and can adopt a flexible uplink/downlink configuration scheme in which the down peak rate can reach 80M and the up peak rate can reach 20M, and can provide a 64-Kbps full-duplex channel. Due to the adoption of a flat network architecture, the characteristics of high-speed data transmission, short system response time and high safety can be ensured.

The embodiment of the invention provides a radio resource distribution method of an ultra-dense small cell network system. The method mainly comprises: in each small cell, distributing a channel, corresponding to a maximum channel gain, of the small cell to a designated user terminal; calculating the channel capacity of the small cell on each channel; and calculating the transmitting power of each channel of the small cell based on a principle that the sum of the channel capacity of all small cells is maximum and according to a distributed power control algorithm. According to the embodiment of the invention, by using a distributed radio resource distribution algorithm, solution of the optimum transmitting power of the small cell base station on each channel can be locally carried out; complex bloat and mass signalling overhead, which result from centralized control of resource distribution of all small cells by a macro base station, are avoided; and flexibility, effectiveness, and robustness of the system are increased. The method is adapted to the development trend of a modernization flat network structure and enables green communication realized.

The invention discloses a high-reliability substation automation system and a control method for an EPA (Ethernet for plant automation)-based flat network architecture. The system consists of a substation spacer layer and a process layer. Multi-function intelligent electronic devices (MIEDs) with different communication standards can be directly connected to EPA and transmit network data by supporting the EPA of different mainstream physical/data link layer protocols; and an EPA network improves the reliability and maintainability of the substation automation system by adopting redundancy designs and different retransmission strategies. The MIEDs adopt hard logic gate control of DSP (a digital signal processor)+ ARM (an advanced RISC machine) + CPLD (a complex programmable logic device) and multi-machine collaborative architectures, and have the advantages of high-efficient, reliable and stable parallel communication. Multi-layer wavelet transformation is carried out by a wavelet transform algorithm by aiming at the condition that strong electromagnetism/surge interference is superposed in substation site signals, so true values of the substation site signals without interference are acquired. A high-reliability switching value output circuit and a PCB (printed circuit board) device double-socket circuit of the MIEDs isolate strong current return circuits from weak current return circuits, so that the high reliability of the substation automation system is facilitated.

The invention provides a base station data service charging method used for flat network architecture. The method includes the steps: a charging module is added to a base station, wherein the charging module is in charge of phone bill processing of data services and real-time charging and real-time control for the data services; with regard to user switching, after user telephoning is switched off, the base station finishes a current phone bill record, and writes the record in a phone bill file, and after user telephoning is switched in, a new user occurs, and a real-time charging procedure is started. According to the method, the base station is taken as a data service control point, and the phone bill processing of the data services, the real-time charging and the data service control are achieved on the base station. When user data are switched in, the charging function for conversations which do not rely on Web Portal or PPPOE is completely controlled by the base station, and the real data network charging in the mode that once insertion is completed, utilization is achieved can be achieved; though complexity of the base station is increased, flattening of a whole network can be achieved, networking flexibility of a system is improved, system efficiency is enhanced, and user experience is improved.

A data center fabric includes a plurality of Field Programmable Gate Arrays (FPGAs), each FPGA interconnected by a plurality of links with other FPGAs, a plurality of servers in a data center, and physical network functions associated with the data center, wherein the plurality of FPGAs form a virtual fabric for switching between the FPGAs, the plurality of servers, and the physical network functions, and wherein the virtual fabric is arranged in a compound graph and a flat network with each FPGA being a node and a diameter of the compound graph and the flat network is indicative of a maximum number of hops for a packet through the virtual fabric.

The invention provides a method and a system for accessing a terminal to a flat network and an evolved high-speed packet access (HSPA) node. When the UE accesses the flat network, the movement state of user equipment (UE) is judged; and when the UE is in a high-speed state, the UE is prevented from accessing the flat network but is switched and accesses a conventional non-flat network. By the method, frequent switching between evolved HSPA nodes is prevented for the UE which moves at a high speed, so the signaling interaction between the evolved HSPA node and a core network is reduced, the message processing load of the core network is relieved and the normal access of the UE is ensured.

A control device having an integrated switch and being configured to logically enable and disable an Ethernet port of the integrated switch. Further disclosed is a device network consisting of at least two field devices, a primary control device and a primary switch, a secondary control device and a secondary switch, which are connected in a daisy chain loop topology. And wherein the secondary control device is configured to logically enable and disable an Ethernet port of the secondary switch. Further disclosed is a flat network consisting of such a device network. Further disclosed is a method for controlling a redundant connection in a flat network, consisting of detecting failure of the primary control device, initiating failover, enabling the Ethernet port of the secondary switch, and disabling the Ethernet port of the primary switch.

The invention relates to a multilayer time delay-capacity model for an LTE (Long Term Evolution), belonging to the technical field of wireless mobile communication. In the model, the expression of three parts contained in a data packet time delay is described and is expressed by adopting a polynomial mode; a polynomial coefficient is determined by adopting the process of the test; and the capacity of each layer is calculated according to the time delay of each layer, and thereby the multilayer time delay-capacity model for the LTE is obtained. Compared with the traditional model in which linear factors are only considered for the influence of packet size on the time delay, the multilayer time delay-capacity model takes the nonlinear factors in a complex network into consideration, gives out the nonlinear relationship of the time delay and the packet size and can be used for measuring and calculating the time delay and the capacity of each layer of link, thereby providing more proper relationship for the analysis of the performance of a flat network.

The invention relates to a flat network cable. The flat network cable is composed of four pairs of metal conducting wires and an outer projective jacket; the four pairs of metal conducting wires are arranged in a row; the outer projective jacket is combined with the four pairs of metal conducting wires; each pair of metal conducting wires is composed of two metal core wires, a ground wire and a shielding layer; after the ground wire is added into the two metal core wires, the ground wire and the two metal core wires are shielded by the shielding layer; each metal conducting wire is formed by seven metal wires and an insulating layer; the seven metal wires are stranded; the insulating layer wraps the stranded metal wires; after the shielding layer winds each pair of metal conducting wires by an aluminium foil strip or a wire, a metal shielding layer is formed; and, after being respectively wound by the metal shielding layer, the four pairs of metal conducting wires are wrapped by the outer protective sleeve, so that the flat network cable is formed. The flat network cable has the characteristics of being simple in structural composition, convenient and reliable to use, magnetic field interference-resistant and good in data transmission effect, suitable for wall covering or ground wiring, etc.

The embodiment of the invention discloses a method and a device for managing a base station and the base station, relating to the network technical field. The invention solves the problem that a user accesses a calling request through a control region base station of a flat UMTS network to complete a calling service of a CS domain by occupying wireless resources of the flat UMTS network so as to affect the effect of the flat network facing an optimized packet domain. The method for managing the base station provided by the embodiment comprises the steps: dividing a physical base station into two traditional logic base stations, and allocating resources for the traditional logic base stations; upgrading at least one traditional logic base station into a flat network base station; connecting the traditional logic base station to a traditional wireless network controller; and connecting the flat network base station to a core network. The invention not only greatly reduces the cost, but also saves the flat UMTS network wireless resources.

Embodiments of the present invention relate to a method for acquiring an IP address and a network access device. The method includes: after receiving a first IP address acquiring message from a first network, assigning a first IP address to the first network by using a process and associating an identifier of the first network with a first session, so that the network access device is capable of mapping the first IP address to a first private network IP address and sending the same to the first network, thereby avoiding the problem of complex implementation in the prior art resulted from a process where a gateway configured for a family network or an enterprise network needs to initiate an IPoE dial-up process. In this way, the gateway configured for the family network or the enterprise network is simplified, operation and maintenance costs are reduced, and flat networks are further implemented.

The invention discloses an IP network frame system which is characterized by being based on an all-IP flat network structure. According to the IP network frame system, a wireless access network and a core network are unified in one IP network; an efficient embedded type IP protocol stack which is developed by self and is based on a VcWorks embedded type real-time operation system is introduced into the system; an IP head template matrix and an IP data buffer matrix are adopted to control receiving/transmitting packaging and unpackaging of an IP packet in the IP protocol stack. The system further comprises a mobile base station, a mobile core network, a fixed exchange center, a webmaster maintenance platform and various types of interconnection and interworking interface equipment; through delicate design, complex sub-systems can be organically integrated into a highly coordinated and unified mobile fixed communication platform. The IP network frame system has the characteristics of small size, light weight, low power consumption, high integration degree, applicability to backing, and the like, and can meet private networks of armies, public security, armed police, civil air defense, security, and the like.

The invention provides a flat network cabling, comprising pair stranded wires composed of an HDPE insulator and soft copper wire conductors; each soft copper wire conductor is externally wrapped withaluminum foil an ALPET which is externally wrapped with the HDPE insulator; the external layer of the HDPE insulator is provided with a PVC sheath, each pair stranded wire is tangent with the outsideof two soft copper wire conductors; and each soft copper wire conductor is spliced through the point of tangency. The invention has the beneficial effects that the adoption of HDPE insulator has goodenvironment protection effect; the invention conforms to the requirement of TIA/EIA 568B.2 standard; and the invention can be widely applied to digital phone, telegraph text image, video communicationand other LAN situations.

The invention discloses a method, a device and a system for preventing DHCP (Dynamic Host Configuration Protocol) attacks in a flat network. The method comprises the following steps: setting an interface ID, a Supervlan ID and a corresponding user limit value in DHCP snooping; receiving a discover message sent by a client through the DHCP snooping, and judging whether the client is online or not; if the client is not online, determining the corresponding user limit value according to the interface ID and the Supervlan ID in the discover message; judging whether a quantity of current online users exceeds the user limit value or not; if so, not forwarding the discover message; and otherwise, adding the quantity of the current online users with 1, and forwarding the discover message. Through adoption of the method, the device and the system, address exhausting caused by the DHCP attacks can be prevented; the network security is enhanced; and the availability and user experience of a whole scheme are improved.