Abstract: A satellite receiver module (101) for telecommunication equipment includes circuitries (102, 103) configured to: receive timing information from one or more satellites, run at least a part of master-end functions of a synchronization protocol suitable for synchronizing master and slave clock-times over a data transfer network, and convert the timing information into timing messages that are accordant with the synchronization protocol. The satellite receiver module further includes a data interface (104) including a connector (105) for detachably attaching to a body device of the telecommunication equipment and for transferring a bit stream carrying the timing messages to the body device. Because the timing information received from the one or more satellites is converted into the timing messages that are accordant with the synchronization protocol, the timing information can be transferred among other possible digital data, e.g. location information, from the satellite receiver module to the body device.

Abstract: A synchronization adapter is coupled to the application that does not support synchronization and generates the necessary synchronization metadata for all data in the application that is to be synchronized. The synchronization adapter then combines the metadata to the actual data to be synchronized to form a synchronization feed. The synchronization feed is stored in an internal cache (or data store) which is internal to the application, or an external cache (or data store), which is external to the application, or it can be stored in both caches. The synchronization adapter also intermittently determines whether the application data has changed, thus warranting a change in its metadata, or whether a synchronization operation is warranted to synchronization operation is warranted to synchronize the data with data in another application. In either case, the synchronization adapter makes the changes to the data, or performs a synchronization operation.

Abstract: A method and apparatus for synchronizing operations between a first circuit and a second circuit is disclosed. The method involves writing receive data from the first circuit to a first ring buffer at a first rate. The first ring buffer has a fixed-length of buffer elements and respective read and write buffer pointers. The buffered receive data is read from the first ring buffer to the second circuit at a second data rate. The respective positions of the read and write buffer pointers are detected, and a relative position between the read and write pointers is dynamically adjusted to enforce at least a predetermined minimum spacing. The dynamic adjustment comprises selectively adding or deleting portions of the data to or from the ring buffer.

Abstract: Systems and methods of transporting internal radio base station (RBS) interface information over a packet network are presented. In one exemplary embodiment, in an interworking function (IWF) for communicating packets between a radio equipment (RE) and a radio equipment controller (REC) of a radio base station (RBS), a method may include receiving a packet sent from another IWF and having internal RBS interface information and residence time measurement (RTM) information that characterizes an asymmetry between processing times on links in different directions between the RE and the REC. Further, the method may include determining an asymmetry compensation that compensates for the asymmetry using the RTM information. Also, the method may include applying the asymmetry compensation to a timestamp of the internal RBS interface information to obtain an updated internal RBS interface information.

Abstract: A method for determining a slave clock to master clock time difference with an alignment marker. The method selects and transmits a first alignment marker at a first time by a transmitter that has a master clock in a first message to a receiver that has a slave clock. Subsequent to transmitting the first message, the method further transmits a second message that contains the first time and an identity of the first alignment marker. The method further receives the first message and records a second time that the first message is received. The method further receives the second message and the first time and the identity of the first alignment marker. The method further determines a transmission delay and generates a time difference from the slave clock to the master clock.

Abstract: A storage device includes a nonvolatile memory, and a memory controller adapted to control the nonvolatile memory and to transmit a first timing signal to the nonvolatile memory at a read operation. The nonvolatile memory includes a nonvolatile memory device adapted to output read data and a second timing signal in response to the first timing signal, and a retiming circuit adapted to detect a locking delay according to the first timing signal, to produce a third timing signal from the second timing signal using the detected locking delay, to retime the read data by latching the read data in synchronization with the third timing signal and to output the third timing signal and the retimed read data to the memory controller.

Abstract: An apparatus for mitigation of packet delay variation, PDV, in a packet-based network, comprising an ingress port to receive event messages, each message being timestamped with a local ingress timestamp at the instant of reception of the message using a local internal clock; an extraction unit to extract a timestamp embedded in the received message; a computation unit to calculate a time offset between the extracted embedded timestamp and the local ingress timestamp of the received event message to record the calculated time offset as a maximum observed delay, if the calculated time offset exceeds a previously recorded maximum observed delay, the computation unit adjusting an internal transmission delay time before onward transmission of the event message from an egress port depending on a time difference between recorded maximum observed delay and calculated time offset of the event message to minimize the packet delay variation, PDV, at the egress port.

Abstract: A controller is configured, by decreasing light quantity in only a first slot that is any one of a plurality of slots into which a unit time is divided equally, and increasing light quantity in all the remaining slots except the first slot of the plurality of slots, to assign information to the first slot of the plurality of slots. The controller is furthermore configured to decrease light quantity in second slots that are three or more continuous slots starting from a head of a preamble, which indicates a frame start point, of a frame of an optical-communication signal and to increase light quantity in a slot immediately before the preamble.

Abstract: A semiconductor integrated circuit apparatus may include a clock-distributing unit, an internal circuit unit and an output-controlling unit. The clock-distributing unit may drive an input clock to output a distribution clock. The internal circuit unit may generate an internal circuit output signal in response to an input signal and the distribution clock. The output-controlling unit may select one of the input clock and the distribution clock in response to a clock selection signal and an output selection signal. The output-controlling unit may synchronize the internal circuit output signal with a clock selected between the input clock and the distribution clock or bypass the internal circuit output signal to output an output signal.

Abstract: A packet network includes a peer-to-peer transparent clock hardware support, a peer-to-peer transparent clock being at least used in order to measure and correct delays of link or path adjacent to network elements and NE residence time, and a Master/Slave end-to-end synchronization path including a first set of network elements A time stamped packet including at least a correction field indicating the cumulated transmission delay of the said packet along the synchronization path. A method includes a detecting a failure event; storing by the first element a measured past path delay of at least one previously transmitted time stamped packet received by the first element; and a function of the incoming current value of the received correction field, the first network element residence time, and a first value depending of a measured past path delay value. A first indicator is generated when detecting a failure.

Abstract: An integrated receiver supports adaptive receive equalization. An incoming bit stream is sampled using edge and data clock signals derived from a reference clock signal. A phase detector determines whether the edge and data clock signals are in phase with the incoming data, while some clock recovery circuitry adjusts the edge and data clock signals as required to match their phases to the incoming data. The receiver employs the edge and data samples used to recover the edge and data clock signals to note the locations of zero crossings for one or more selected data patterns. The pattern or patterns may be selected from among those apt to produce the greatest timing error. Equalization settings may then be adjusted to align the zero crossings of the selected data patterns with the recovered edge clock signal.

Abstract: A transceiver adapted to emulate devices using one or more of a plurality of different radio access protocols. The transceiver comprises a timing module, the timing module being adapted to maintain a record of the current timing state which would apply to each of the different radio access protocols the transceiver is able to use, if that radio access protocol was being used. When the transceiver changes a radio access protocol being used to emulate a device from a first radio access protocol used to emulate a first device to a second radio access protocol used to emulate a second device, the transceiver is adapted to use the record of the current timing state which would apply to the second radio access protocol to set the timing of the second radio access protocol.

Abstract: A network receiver for a network using distributed clock synchronization and a method of adjusting a frequency of an internal clock of the network receiver are provided. The network receiver receives from the network an input signal and has an internal clock for generating a clock signal. The network receiver further includes a clock bit comparator and an adjustment signal generator. The clock bit comparator compares lengths of a first time period lapsed while receiving at least five consecutive bits of the signal and of an internal clock time interval representing the same number of bits as a number of bits of the first time period. The adjustment signal generator generates a frequency adjustment signal for controlling a frequency of the internal clock in dependence of a result of the comparison of the lengths to reduce a difference between the lengths.

Abstract: This application discusses, among other things, communication apparatus and methods, and more particularly, a single conductor or single wire communication scheme. In an example, a method for communicating between a master device and a slave device using a first single conductor can include transmitting a first ping on the first single conductor using a master device, the first single conductor configured to couple the master device to a slave device, receiving a slave ping on the first single conductor at the master device during a ping interval, toggling a logic level of the first single conductor prior to sending a first data packet using pulses having a duration of less than one half of a unit interval, such as a unit interval associated with a bit interval.

Abstract: A system and method for closely synchronizing the transmission of real-time data streams is described. Synchronization data is transmitted by a cycle master for receipt by one or more cycle slaves. A cycle slave updates an internal state based on synchronization data received from the cycle master. This internal state may govern reproduction of received real-time data streams by the cycle slave. Such synchronization data may be inserted into transmitted media streams. The cycle slave internal state may be more accurately set by calculating timing differences between the cycle master and cycle slave and periodically adjusting that internal state between receipt of the synchronization data from the cycle master.

Abstract: Provided is a synchronization system comprising a first synchronization device and a second synchronization device which carry out synchronization processing by transmitting and receiving synchronization packets in accordance with a synchronization protocol and which synchronize the times thereof. The first synchronization device, which corresponds to a slave device, notifies an abnormality to the second synchronization device when an abnormality related to time synchronization processing is detected. The second synchronization device, which corresponds to a master device, increases the interval during which synchronization is performed as the length of time during which an abnormality notification is not received increases.

Abstract: A distributed automatic level control function is provided, in which information relating to a common automatic level control parameter is transmitted to each of a plurality of microphone devices, wherein the information transmitted to at least one microphone device is derived from an audio sample of at least one different microphone device. Each microphone device produces the common automatic level control parameter based on the information received by the microphone device and applies the common automatic level control parameter produced by the microphone device to a distributed automatic level controller of the microphone device.

Abstract: In an embodiment, a processor includes a master counter to store a time stamp count for the processor, and multiple cores each including a core counter to store core time stamp counts. The processor also includes synchronization logic to, in response to a de-synchronization event in a core: obtain a value of the master counter; initiate a first core counter using the value of the master counter, where the first core counter is included in the first core; compare a synchronization digit of the first core counter to a synchronization signal indicating a value of a synchronization digit of the master counter; and in response to a determination that the synchronization digit does not match the synchronization signal, adjust a first subset of digits of the first core counter based on a latency value of the synchronization signal. Other embodiments are described and claimed.

Abstract: A method and system are provided that synchronize one or more appliances to one or more users' schedules. Sensor data may be obtained from a sensor. The sensor data may indicate a state of a first appliance. A user location may be determined. A first characteristic of the first appliance may be obtained. Based upon the user location and the sensor data, a schedule indicating when the user will desire a state change of the first appliance may be determined. A feature of the first appliance may be dynamically modified to cause the first appliance to operate according to the schedule. A notice may be sent to the user that contains information about the first appliance.

Abstract: A system may include a database configured with individual partitions, one of the partitions corresponding to a sponsored content campaign of a social network. The system may further include multiple servers each communicatively coupled to the database, and each configured to implement a campaign having a campaign termination criterion. Each of the servers may include a processor configured to track sponsored content event data received from a user device based on the campaign and transmit the event data to the database and terminate the campaign based on a comparison of the event data as received from a partition of the database corresponding to the campaign and an estimation of event data not received from the database. The database may be configured to store the event data as received from the servers in the partition corresponding to the campaign upon receipt of the event data.

Abstract: A method for detecting symmetry of optical fibers and a device thereof are provided. The method includes: receiving, by a boundary clock, a first timestamp message carrying a first timestamp via a slave port, and a second timestamp message carrying a second timestamp via a passive port; and determining, by the boundary clock, symmetry of optical fibers according to at least the first timestamp and the second timestamp. The method and device for detecting symmetry of optical fibers provided by the present disclosure reduce the cost of detecting symmetry of optical fibers in the conventional technology, and improve the efficiency of detecting symmetry of optical fibers in the conventional technology.

Abstract: A method and system are provided for measuring the propagation time, or one-way delay or latency, of an 8B/10B data stream, such as a CPRI stream, through a network using a transport network protocol, such as OTN. Embodiments of the present disclosure do not modify the CPRI client and are unlimited in the amount of delay that can be measured. At first and second network endpoints, information is gathered related to patterns associated with successive occurrences of a control character in the 8B/10B encoded data stream. This information is sent over a side channel separate from the 8B/10B encoded data stream. The one-way delay is determined based on a difference between the information related to the pattern identified at the first and second network endpoints.

Abstract: Method and apparatus for reducing latency in a networking application comprises receiving data at a physical coding sublayer (PCS) from a media access control (MAC) sublayer, wherein the MAC sublayer utilizes a first clock domain operating at a first clock frequency. The method further comprises performing one or more functions in the PCS on the data in the first clock domain. The method also includes transmitting the data on one or more physical medium attachment (PMA) lanes, wherein the one or more PMA lanes utilize a second clock domain operating at a second clock frequency, wherein the first clock frequency and the second clock frequency have a fixed ratio. The method also comprises performing one or more functions in the PCS on the data in the second clock domain.

Abstract: It is proposed a method for providing synchronization in a data acquisition system including a plurality of acquisition units. A given acquisition unit of the plurality carries out the following steps: receiving a packet from another device of the data acquisition system; extracting a synchronization accuracy information and a reference clock information from the received packet; obtaining a first reference clock as a function of the extracted reference clock information; if the extracted synchronization accuracy information indicates a better synchronization accuracy than a current synchronization accuracy information associated to the given acquisition unit: taking the obtained first reference clock as a selected reference clock and updating the current synchronization accuracy information to indicate a lower synchronization accuracy than the extracted synchronization accuracy information.

Abstract: In certain aspects, the present disclosure is related to devices, methods, systems and/or computer-readable media for use in an isochronous media network in which media devices connected to a network employ one or more synchronization signal to regulate or facilitate the transmission of media signals through the network. In certain aspects, the present disclosure is also related to devices, methods, systems and/or computer-readable media for use in a larger unified, or substantially unified, isochronous network created from aggregating local isochronous media networks in which media devices connected to a network employ a one or more synchronization signal distributed from a local master clock to regulate or facilitate the transmission of media signals.

Abstract: Video content is uploaded via the Internet to a video-on-demand (VOD) server identified by a title and a hierarchical address of categories and subcategories for categorizing the title. The VOD server converts and stores the video content at a storage address in a video content database linked to the title. The title is listed in a location of an electronic program guide (EPG) using the same categories and subcategories as in its hierarchical address. Any TV subscriber can access the EPG and navigate through its categories and subcategories to find a title for viewing on the TV. This can enable many, new blogging or podcasting-like programs by popular “Hosts” to be self-published on the Internet and readily navigated for display on TV. The EPG can also store TV program addresses as bookmarks and allow them to be shared with other subscribers or with friends and contacts online by sending to their email addresses.

Abstract: A method and device for implementing a compensation for an asymmetry delay of a 1588 link are provided. The method comprises: measuring and calculating a value of an asymmetry delay of the 1588 uplink/downlink; performing an asymmetry delay compensation when the value of the asymmetry delay exceeds a set synchronization offset range; and continuing a normal 1588 time synchronization if the value of the asymmetry delay does not exceed the set synchronization offset range; and implementing the automatic compensation for the asymmetry delay of the 1588 link. The above-mentioned scheme can correct the asymmetry delay automatically, and ensure the quality of 1588 time synchronization.

Abstract: A security device may receive, from a server device, a response to a request. The request may be provided by an attacker device and may include a plurality of input values. The security device may determine the plurality of input values, included in the request, based on receiving the response. The security device may modify the response to form a modified response. The response may be modified to include information associated with the plurality of input values. The response may be modified in an attempt to prevent the attacker device from identifying a vulnerability, associated with the server device, based on the plurality of input values being included in the response. The security device may provide the modified response to the attacker device.

Abstract: A radio communication device includes: a receiver configured to receive first and second compressed data strings obtained by compressing, in a control device, a first data string as an object of radio transmission via a first antenna and a second data string as an object of radio transmission via a second antenna different from the first antenna; and a processor configured to process the first and second compressed data strings, wherein the processor: decompresses the first and second compressed data strings and restores the first and second data strings; measures a first decompression time taken for decompressing the first compressed data string and a second decompression time taken for decompressing the second compressed data string; and synchronizes radio transmission timings of restored first and second data strings based on a difference between the first decompression time and the second decompression time.

Abstract: According to the embodiments, a communication apparatus stores therein an operation mode indicating whether the communication apparatus is a publisher or a subscriber, and includes a message processing unit that generates a transmission message and analyzes a reception message and a nonvolatile memory. When the communication apparatus is subscriber, the communication apparatus sends a repair message to request a retransmission of a data chunk not successively received. When the communication apparatus is publisher, the communication apparatus selectively retransmits the data chunk based on the repair message.

Abstract: A system and method is described herein for managing power consumption by a plurality of sensors in a proximity-based ad hoc network. The system and method receives sensor data that is provided from a plurality of sensors and constructs a proximity-based ad hoc network among the plurality of sensors based on the sensor data. The system and method also receives and analyzes power status information from each sensor in a group of spatially and temporally proximate sensors in the proximity-based ad hoc network. Based on the analysis, the system and method then modifies a manner in which at least one sensor in the group provides sensor data.

Abstract: Systems and methods for a secure mobile framework to securely connect applications running on mobile devices to services within an enterprise are provided. Various embodiments provide mechanisms of securitizing data and communication between mobile devices and end point services accessed from a gateway of responsible authorization, authentication, anomaly detection, fraud detection, and policy management. Some embodiments provide for the integration of server and client side security mechanisms, binding of a user/application/device to an endpoint service along with multiple encryption mechanisms. For example, the secure mobile framework provides a secure container on the mobile device, secure files, a virtual file system partition, a multiple level authentication approach (e.g., to access a secure container on the mobile device and to access enterprise services), and a server side fraud detection system.

Abstract: Certain embodiments of the invention may include systems, methods, and apparatus for modifying sensor time stamp data. According to an example embodiment of the invention, a method is provided for monitoring and correcting sample time stamps. The method can include receiving packet data from one or more sensors or intelligent electronic devices (IEDs); examining time stamps associated with the received packet data; and determining a variance between the time stamps or an offset between the time stamps and an accurate time source.

Abstract: A wireless media distribution system is provided comprising an access point (6) for broadcasting media and a plurality of stations (2) for reception and playback of media. Each station is configured for receiving and decoding a timestamp in a beacon frame transmitted repeatedly from the access point. This is used to control the output signal of a station physical layer clock (12) which is then used as a clock source for an application layer time synchronisation protocol. This application layer time synchronisation protocol can then be used in the station to control an operating system clock (8) for regulating playback of media.

Abstract: A method and an apparatus for transmitting a synchronization signal in a wireless communication system are provided. A base station transmits a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) to a terminal through a macro node, and transmits a third synchronization signal (TSS) to the terminal through at least one radio remote head (RHH) having a cell identity (ID) that is identical to the macro node. The terminal performs synchronization based on at least one of the PSS, the SSS, and the TSS.

Abstract: A method includes, at a first network endpoint, determining whether a second network endpoint supports receipt of a stream of packets having a quality of service indicator. The method further includes, at the first network endpoint, in response to determining that the second network endpoint supports receipt of the stream of packets having the quality of service indicator, generating and sending the stream of packets having the quality of service indicator and including forward error correction data to the second network endpoint.

Abstract: A game apparatus includes a CPU, and a relationship diagram displaying screen is displayed on a second LCD according to an instruction from a first user of the game apparatus. On the relationship diagram displaying screen, a display manner of an arrow displayed between a user image of the first user and a user image of a second user of another game apparatus is changed. The thickness and the color of the arrow on the side of the user image of the second user are set on the basis of the degree of transmission of the message data transmitted by the first user to the second user. Furthermore, the thickness and the color of the arrow on the side of the user image of the first user are set on the basis of the degree of reception of the message data received by the first user from the second user.

Abstract: A low power partial functionality communication link that includes a first mode of operation for transmitting a first high throughput data stream including a plurality of data types over wires, and a second low power partial functionality mode of operation for transmitting, over a subset of the wires used for transmitting the first data stream, a second low throughput bidirectional data stream that may include less data types than the first data stream.

Abstract: Precision Timing Protocol (PTP) related functions for use in packet communications carried in part by a microwave communications link include setting of time of day values across the microwave link and providing transparent clock functions. The PTP functions may be used for synchronizing radio base stations in a cellular network. The transparent clock can bridge Ethernet switches associated with microwave stations providing the microwave communications link.

Abstract: In a method for monitoring the residence time across nodes of a communication network including a transparent clock-based synchronization architecture, the method includes configuring and generating a tunable and traceable packet dedicated to delay measurements. The method further includes measuring the packet resident time across a network node by a transparent clock, storing, at the level of the network node, the measured residence time, and retrieving the stored residence time by a Network protocol.

Abstract: An apparatus comprising high speed ports connected via an integrated high speed serial switch fabric and serializer/deserializer circuits to an internal processing logic, wherein the high speed serial switch fabric is adapted to switch a serial reception signal received by a high speed port to at least one of at least one other high speed port of the apparatus and to the serializer/deserializer circuit of the receiving high speed port.

Abstract: A method of splicing a first data stream and a second data stream is disclosed. The method comprising detecting a splice in-point and a splice out-point within the first data stream, wherein the splice in-point is a frame in the first data stream and the splice out-point is another frame in the first data stream. The method further identifies splice-in opportunity point and a splice-out opportunity point from a plurality of splice opportunity points (SOPs) in the first data stream, wherein the splice-in opportunity point corresponds to the splice in-point and the splice-out opportunity point corresponds to the splice out-point, wherein the splice-in opportunity point and the splice-out opportunity point are frames of the first data stream.

Abstract: A gateway device includes plural electronic circuit boards with redundant structures, between first and second networks, which are different. The gateway device receives data provided through the first network and, after applying data processing, outputs data to the second network. Data processing reference timings and time information, which are common in the gateway device, are shared, the data processing is executed in synchronization with the reference timings, and synchronized packets are provided. System switching between the electronic circuit boards is executed in accordance with the time information. Thus, packet outputs are synchronously switched.

Abstract: A system and method of operation of an optical network communication system includes: an optical fiber; an optical link attached to the optical fiber; a data transmitter for sending a downstream data message at a downstream data wavelength in the optical link; an optical time domain reflectometry (OTDR) transmitter for sending a OTDR broadcast pattern continuously at an OTDR wavelength different from the downstream data wavelength in the optical link; a broadband photo detector coupled to the optical fiber; and an OTDR receiver for receiving an OTDR reflected response pattern on the broadband photo detector during an open time slot not used for receiving an upstream data message for indicating an optical fault and for calculating an error distance along the optical fiber based on the optical fault.

Abstract: The disclosure discloses a terminal access method and a radio communication network. The method comprises: after a first terminal accesses the radio communication network, the radio communication network stores the first context information corresponding to a first identifier of the first terminal; the radio communication network receives an access request message from a second terminal, wherein the access request information carries a second identifier of the second terminal; the radio communication network establishes the second context information for the second terminal according to the first identifier, the first context information and the second identifier; and the radio communication network implements the access of the second terminal according to the second context information. In the disclosure, duplicate establishment of the same information in context information can be avoided, so that the non-data-service overhead of the radio communication network is reduced.

Abstract: A method includes, in a mobile communication terminal, receiving a signal, which carries media content that has been encrypted after being compressed in accordance with a compression protocol having a plurality of predefined configurations. Each configuration specifies a respective compression mode of the compression protocol. The received signal is decrypted, and one or more parameters that define a configuration of the compression protocol that was used for compressing the media content are determined from the decrypted signal. An absence of match is detected when the determined one or more parameters do not match any of the plurality of predetermined configurations of the compression protocol. An error in decrypting the received signal is identified based on detecting the absence of a match.

Abstract: A managing station comprises a delay time measuring unit that measures, while transmitting a delay time measurement frame to each of the slave stations and receiving a response frame responsive to the delay time measurement frame from the slave station, an elapsed time from when transmitting the delay time measurement frame to when receiving the response frame and that calculates a delay time of the slave station; and a delay detecting unit that compares the calculated delay time and a delay judgment value that is an average of the delay times calculated in a past for the slave station to determine whether delay is occurring in the slave station for each of the slave stations and that identifies, if delay is occurring in the slave station, the position of a delay element using connection configuration information indicating connection states between the communication apparatuses in the network.

Abstract: Embodiments of the present invention provide a clock synchronization method and device. The method includes: receiving, a preconfigured multi-protocol label switching (MPLS) capability parameter and a traffic engineering (TE) capability parameter, and establishing, based on the MPLS capability parameter and the TE capability parameter, an MPLS tunnel interface; establishing, an MPLS TE tunnel whose bidirectional paths are consistent between the first clock synchronization device and a second clock synchronization device; and performing, clock synchronization message interaction with the second clock synchronization device through the established MPLS TE tunnel.

Abstract: A system and/or computer program product synchronizes data between a first computer and a second computer. An original first data in a first computer is changed into revised first data in the first computer by inserting a data change into the original first data. The data change in the revised first data is identified and transmitted to a second computer in a message. The message instructs the second computer to convert an original second data stored in the second computer into a revised second data by inserting the data change into the original second data, where the original second data and the revised second data are used and managed by a resident application software on the second computer. The message is executable without use of the resident application software on the second computer, thus allowing changes to be made across disparate platforms.

Abstract: Provided is a PLC network extension system, the system including a basic base generating a control data for controlling a plurality of extension bases, generating a network frame using the control data, and transmitting the network frame to one extension base in the plurality of extension bases via a network cable, and the plurality of extension bases extracting a control data from the received network frame to control a pre-installed module based on the control data.