Abstract: A method for allocating radio resources in a wide band radio communication network for uplink communications, the network including cells, each having a base station and terminals, the method including during connection of a first terminal to a first base station of a first cell: performing reference signal quality measurements, defined respectively for the terminals of the cells by each base station, analyzing the interference detected from the first terminal on the uplink communications from the terminals connected to the base stations, the analysis being carried out as a function of the reference signal quality measurements, by each base station, allocating radio resources by the first base station for an uplink communication from the first terminal, as a function of the analysis results on detection of interference from the first terminal on the uplink communications from the other terminals of the cells, the results coming from each cell.

Abstract: This invention relates to the proposal of component carrier (de)activation message that is allowing a activation or deactivation of one or more component carriers in the uplink or downlink. Furthermore, the invention relates to the use of the new component carrier (de)activation message in methods for (de)activation of downlink component carrier(s) configured for a mobile terminal, a base station and a mobile terminal. To enable efficient and robust (de)activation of component carriers, the invention proposes to use component carrier-specific or cell-RNTI(s) for the scrambling of the CRC of the component carrier (de)activation message, and to explicitly indicate the intended recipient of the component carrier (de)activation message in a corresponding field in the message. Furthermore, the invention further proposes different designs of the component carrier (de)activation message and further uses thereof, so as to trigger CQI reporting and/or SRS transmission by a mobile terminal.

Abstract: Systems and methods for flexible spectrum, or bandwidth, support in a cellular communications network are disclosed. In one embodiment, a base station for a cellular communications network is configured to transmit a non-standardized bandwidth carrier and information that identifies a standardized bandwidth and additional information that, together with the information that identifies the standardized bandwidth, defines a non-standardized bandwidth of the non-standardized bandwidth carrier. In one embodiment, the additional information defines a bandwidth adjustment for the standardized bandwidth that defines the non-standardized bandwidth. In one embodiment, the bandwidth adjustment is a symmetric bandwidth restriction. In another embodiment, the bandwidth adjustment is an asymmetric bandwidth restriction. In yet another embodiment, the bandwidth adjustment is a symmetric bandwidth expansion. In yet another embodiment, the bandwidth adjustment is an asymmetric bandwidth expansion.

Abstract: A method and an apparatus for tuning an FIR filter in an in-band full duplex transceiver. The method for tuning an FIR filter includes: converting an input signal of the FIR filter into a first signal that is a baseband signal; converting a signal obtained by subtracting an output signal of the FIR filter from the self-transmitted interference signal into a second signal that is the baseband signal; and calculating attenuation of the FIR filter using the first signal and the second signal.

Abstract: A multiband filter circuitry utilized in a radio-frequency (RF) system is disclosed. The multiband filter circuitry operates at a plurality of operating frequency bands. The multiband filter circuitry comprises at least a switchable-filtering series. Each of the at least a switchable-filtering series comprises a first terminal coupled between the antenna and the RF processing unit; a second terminal coupled to a ground; and a plurality of switchable-filtering units connected in series, each comprising a filtering unit; and a switching unit, connected to the filtering unit in parallel.

Abstract: RF circuitry, which includes an antenna VSWR RF duplexer and duplexer control circuitry, is disclosed. The antenna VSWR RF duplexer includes a first hybrid RF coupler having a first main port coupled to an RF antenna, a first isolation port, and a first pair of quadrature ports; a second hybrid RF coupler having a second main port, a second isolation port, and a second pair of quadrature ports; a third hybrid RF coupler having a third main port, a third isolation port, and a third pair of quadrature ports; and RF filter circuitry coupled to the first pair of quadrature ports, the second pair of quadrature ports, and the third pair of quadrature ports, such that the antenna VSWR RF duplexer provides an antenna VSWR signal. The duplexer control circuitry receives and processes the antenna VSWR signal, which is representative of VSWR mismatch conditions at the first main port.

Abstract: In a broadcast scheme of transportation in an IP scheme, clock synchronization and presentation synchronization are well implemented. A clock synchronizing with time information acquired from an outside is generated. Time information including frequency information of the clock and synchronizing with the time information acquired from the outside is generated. A broadcast signal including transmission media, time acquisition information for acquiring decoding time and presentation time for every presentation unit of the transmission media obtained based on the generated time information, and the generated time information is transmitted.

Abstract: A method of performing synchronization in a super regenerative receiver (SRR) includes setting a quench rate of the SRR to a value of 1.5 times a chip rate of an incoming signal, acquiring an expected preamble sequence of an arbitrary sample set among a plurality of possible sample sets, acquiring an expected start frame delimiter (SFD) sequence for all of the possible sample sets to achieve frame synchronization, computing respective correlation metrics for bits of the expected SFD sequence while the expected SFD sequence is acquired for all of the possible sample sets, calculating a decision metric based on the correlation metrics in response to an SFD sequence being detected for one or more of the possible sample sets, and identifying a best sample set for demodulating the incoming signal among all of the possible sample sets based on the decision metric to achieve pulse synchronization.

Abstract: A sample rate converter for an oversampled data stream develops interpolated samples at a first oversample rate, from samples at a second oversample rate; wherein the first oversample rate is a non-integer multiple of the second oversample rate. When the samples at the second oversample rate are changing state, at least two interpolated samples are generated or the interpolation is at least second order. When the sample at the second oversample rate is not changing state, the sample at the second oversample rate is passed substantially unchanged. In one embodiment of the invention, asynchronous sample rate conversion is performed, and the first oversample rate is a varying non-integer multiple of the second oversample rate.

Abstract: Systems and methods for provided for reducing interference caused by leakage of signals generated by a spread spectrum phase lock loop (SS PLL). Output of SS PLL may be processed to reduce interference. For example, a sinusoidal spreading signal may be used to spread the output of the SS PLL. A notch filter tracks the frequency of the output of the SS PLL to steer the notch in the filter to the instantaneous frequency output from the SS PLL, thus allowing the notch filter to be placed in the path of signals that have unwanted leakage from the SS PLL.

Abstract: The invention relates to a method for securing an electronic device (SC) against attacks via covert channels when the electronic device (SC) implements a Montgomery ladder for calculating the element A?A?. . . ?A where A appears k times. A designates an element of an Abelian group with a law ?, and k is a natural number. The method comprises a modified implementation of the Montgomery ladder. The invention also relates to a device (SC), a computer program and a storage medium arranged so as to implement such a method.

Abstract: A system and method for providing security key exchange and management prior to the operating system of the server and also provides for executing various security functions to prevent a virus or malicious software from propagating through the server and the network. The system and method utilize the BIOS firmware and baseboard management controller (BMC), which are more secure since they do not rely on open source code for software plug-ins from the user layer. As a result, a secure code can be created for key management with a globally unique identifier (GUID). The system and method provides for a network manager to easily and flexibly manage multiple security keys for a rack server system.

Abstract: In a method for generating a secret key, a first node which is connected via a transmission channel to a second node estimates a variability of the transmission channel with regard to at least one physical channel parameter of the transmission channel, selects a sampling rate for the channel parameter as a function of the variability, generates a bit sequence by sampling the channel parameter at the selected sampling rate, and adjusts the bit sequence with the second node.

Abstract: In a method for generating a secret key, a first node which is connected via a transmission channel to a second node measures a sequence of physical channel parameters of the transmission channel within a predefined time window, determines for multiple predefined code words a distance of each code word from the sequence, selects a particular code word from the multiple code words which has the shortest distance from the sequence, and adjusts a bit sequence which is assigned to the selected code word with the second node via the transmission channel.

Abstract: A method for data transformation is provided. The method includes interleaving input/output (I/O) processing of files or blocks and rekeying of the files or blocks. The method includes blocking from the rekeying the portion of the file or blocks while the portion of the file or blocks is subjected to the I/O processing and blocking from the I/O processing the portion of the file or blocks while the portion of the file or blocks is subjected to the rekeying. The method further includes writing metadata regarding status of the rekeying of the portion of the file or blocks, and regarding a key applied in the rekeying of the portion of the file or blocks, wherein at least one method operation is performed by a processor. A computer readable media and a system are provided also.

Abstract: A system for improving the data security during a communication process, including at least one processor and a hardware security module. The communication data is authenticated prior to a transmission process, and the authenticity of the communication data is checked upon being received. The authentication is carried out by the processor, and the authentication check is carried out by the hardware security module, wherein the communication data is car-to-X messages. The processor and the hardware security module are linked via a common secret element such that at least the hardware security module cannot be coupled to another processor.

Abstract: Encryption methods and apparatus are described. According to one aspect, an encryption method includes accessing a sequence of an encryption base, the sequence comprising a plurality of sequence elements which correspond to different place values of the encryption base, accessing data to be encrypted, and using the sequence elements of the sequence, encrypting the data by converting the data from an initial base to the encryption base.

Abstract: To determine the correct media stream to latch onto, the system and method uses a hashing algorithm to uniquely identify a legitimate media stream. A first invite message is received at a Session Border Controller (SBC) to establish a communication session. For example a Session Initiation Protocol (SIP) INVITE is received. The first invite message comprises a first hash of a fingerprint. For example, the hash may be a hashed session key. A media message is received that contains the fingerprint to establish a media stream for the communication session. A second hash is created using the fingerprint in the media message. The first hash is compared to the second hash. In response to the first hash matching the second hash, a Network Address Translator (NAT) latches to an address and/or a port in the media message. Thus, the correct media stream is associated with the communication session.

Abstract: Methods and systems for controlling a network access control system that includes a server encrypting a first identifier that can be related to a registered user and communicating the encrypted first identifier to the mobile device. The lock device receives, from the mobile device, a first data set that includes at least the encrypted first identifier. The lock device may encrypt the first data set to generate a second data set and communicates the encrypted second data set to the mobile device. The server receives a third data set that includes at least the encrypted second data set and a second identifier that can also be related to the registered user. The server extracts from the communicated third data set the first and second identifiers, and the extracted first and second identifiers are compared to verify that the second identifier is indeed related to the first identifier.

Abstract: A variety of mechanisms to perform End-to-End authentication between entities having diverse capabilities (E.g. processing, memory, etc.) and with no prior security associations are used. Security provisioning and configuration process is done such that appropriate security credentials, functions, scope and parameters may be provisioned to an Entity. Mechanisms to distribute the security credentials to other entities which could then use the credentials to perform an End-to-End authentication at the Service Layer or the Session Layer and using Direct or Delegated modes are developed.

Abstract: Devices, systems, and methods for reconditioning an intravascular device for reuse are provided. The method includes reading first security data from a memory of the intravascular device; determining if the intravascular device is authentic; generating second security data, when the intravascular device is authentic; and writing the second security data to the memory of the intravascular device. Devices, systems, and methods for authenticating an intravascular device for use are also provided.

Abstract: The present invention generally relates to systems and methods for extending a chain of trust beyond the DNS. Some embodiments provide a verifier with the ability to validate a chain of trust starting with the trust anchor at the DNS root all the way to a service or object of interest outside the DNS.

Abstract: A method of generating, emitting and validating a security code, in QR Code or Data Matrix formats, which may be printed in physical media, displayed in electronic display or stored in electronic chips through technologies of Radio-Frequency Identification (RFID) or Near Field Communication (NFC). This code is generated using encryption, authenticated cryptography and digital identities or certificates emitted in the standard of Public Key Infrastructure (PKI) by a reliable Certification Authority, providing to validate the code, with (online) or without connectivity (offline) to a data network, by one application installed, by a reading process, cryptographic validation and decryption, allowing to open the security code content. Optionally, it is possible to achieve the emitting of geopositioning and in its security code validation, with the end user identification.

Abstract: A system and method for efficient certificate authentication management and distribution of large, web scale authentication information. The method includes receiving at a server, security certificate information, said security certificate including a unique certificate identifier. A structured data source, such as an XML file or database is encoded with a unique record for each possible security certificate using the record ID as the security certificate ID. Each unique record includes a record of four bits or less. Owing to the small size of the data source, large amounts of security certificates may be managed and distributed efficiently over a network to one of more private gateways allowing for large scale certificate authentication.

Abstract: A constrained device includes an exterior surface affixed with a public key associated with the constrained device. Alternatively, or in addition, the public key may be included in a container that stores the constrained device. The constrained device also includes memory, which stores a private key, wherein the private key corresponds to the public key that is affixed on the exterior surface of the constrained device. By displaying the public key on the constrained device, a system administrator may document the public key and related information about the device and its intended role in the network without requiring any human interface or any establishment of power or network at the installation site.

Abstract: One aspect relates to a process and associated device for managing digital ID lifecycles for application programs, and abstracting application programs for multiple types of credentials through a common Digital Identity Management System (DIMS) and Application Programming Interface (API) layer.

Abstract: In an authentication method according to the present disclosure, (1) a device transmits device history information with a CRL added thereto (hereinafter, device history information with added CRL) to a controller, (2) the controller transmits the device history information with added CRL to a server, and (3) if the version of the CRL included in the device history information with added CRL is older than the version of the CRL stored on the server, the server judges that the controller is unauthorized.

Abstract: A computing machine creates a local certificate authority (CA) that has certificate signing authority, creates a certificate signing request (CSR) that includes data of a local service that is hosted by the computing machine, creates a service certificate for the local service using at least a portion of the data in the CSR, signs the service certificate using a private key of the local CA, and provides the service certificate to the local service. The private key is stored locally on the computing machine.

Abstract: In some embodiments, a powered device includes a powered device circuit, which may include a maintain power signature (MPS) circuit configured to compare a sense current to a reference current. In a first mode, the MPS circuit may be configured to automatically generate an MPS signal when the sense current is less than the reference current.

Abstract: A respective electronically controlled switch is provided in series with the output of each PD. A control circuit having a timer functionality is further provided, with the electronically controlled switches responsive to the control circuit. Upon detection that a second PD, defined temporally, is provided with operating power, the respective electronically controlled switch is maintained open for a predetermined hold-off time period sufficient to ensure detection by the respective PD control state machine of the completion of startup. After expiration of the predetermined hold-off time period, the respective electronically controlled switch is closed thus enabling normal operation.

Abstract: A communication monitoring device includes, a first voltage application circuit 5, mounted on a first connector portion 2b arranged at one end of a communication cable 2 having at least two signal lines 2a, or a first repeater 3 or a first communication device, connecting the first connector portion 2b, wherein the first voltage application circuit 5 applies an alternating current voltage at a predetermined frequency to between any signal lines 2a in the communication cable 2, and a second display portion 6, mounted on a second connector portion 2c arranged at an other end of the communication cable 2, or a second repeater 4 or a second communication device, connecting the second connector portion 2c, wherein the second display portion 6 detects and displays the alternating current voltage at the predetermined frequency applied to between the any signal lines 2a in the communication cable 2.

Abstract: A system for selecting and monitoring data plans for telecommunications systems, and methods of determining, learning and estimating usage patterns in-order to predict usage and tie this to cost and the overlaying of plan selection for cost optimization. Further, additional methods are applied to determine anomalous user behaviors and raise security and data leakage related events.

Abstract: Apparatuses, computer readable media, and methods for sending and receiving multi-user request-to-send frames in a high-efficiency wireless local-area network (HEW) are disclosed. HEW frames are sent with frame types and subtypes the same as legacy frames with a length field greater than a legacy length to indicate the frame is a HEW frame. An apparatus of a high-efficiency (HE) wireless local-area network device is disclosed. The apparatus including transceiver circuitry and processing circuitry configured to receive a frame comprising a legacy frame type, a legacy frame sub-type, and a length in a legacy signal field (L-SIG), and determine the frame is an HE frame if the length is greater than a threshold length, wherein the threshold length is greater than a second length of a legacy frame of the legacy frame type and legacy frame sub-type.

Abstract: A communication control method is employed in a mobile communication system including a general cell supporting PTM transmission of MBMS data and a specific cell not supporting PTM transmission of the MBMS data. The method comprises: a step A of broadcasting general cell load information from the general cell; a step B of receiving the general cell load information broadcasted in the step A, by a user terminal which receives the MBMS data from the general cell in an idle mode with the general cell selected as a cell on which to camp; and a step C of controlling cell reselection from the general cell to the specific cell by the user terminal, based on the general cell load information received in the step B.

Abstract: A data transmission system including a plurality of terminal devices arranged in a communication network and configured to transmit or receive content data. At least one terminal devices configured to receive content data transmitted from another terminal device, among the plurality of terminal devices, includes a reception priority management unit configured to manage priority of two or more content data addressed to the own terminal device, and a data reception control unit configured to, based on an output time interval of output signals corresponding to priority data whose priority managed by the reception priority management unit is high among two or more content data being received, request a transmission source configured to transmit content data having priority lower than the priority data, to perform control to stop transmitting the content data.

Abstract: The reduction of multicast traffic collisions is facilitated. A device that is associated with a multicast group receives a multicast message requesting re-transmission of an acknowledgment message from the device. The multicast message includes information identifying the device within the multicast group of devices. In response to the device being determined to be identified by the information, the acknowledgement message can be re-transmitted after a defined transmit delay period after receipt of the multicast message. The defined transmit delay period can be based on the number of devices in the multicast group, based on the number of previous re-transmissions by the device and/or based on the number of devices for which re-transmission is requested.

Abstract: Embodiments of the present invention provide a standby method, an intelligent home device, and a standby system, relate to the communications field, and implement standby of the intelligent home device that has a simple process and does not need participation of a third-party server. The method used in the embodiments of the present invention includes: receiving, by a first intelligent home device, a standby indication message sent by a second intelligent home device; keeping in communication with a third-party server corresponding to an intelligent service application of the second intelligent home device; and if a first service request sent by the third-party server is received, sending a wake-up request to the second intelligent home device according to the first service request and a preset correspondence, to wake up the second intelligent home device. The present invention is applied to standby of the intelligent home device.

Abstract: When switching sources, resolutions or refresh rates in a video distribution network, switching times are reduced by maintaining video lock and security authentication between a video switcher and a video sink. The scaler maintains video lock and security authentication by continuing to generate video timing data during switching events. The scaler also facilitates an aesthetically pleasing transition by generating image content data prior to and after the switching event.

Abstract: The invention relates to a method for operating a communication system (100) having a plurality of communication units (300, 301, 302, 303, 304) which are connected to a communication medium (110), wherein access to the communication medium (110) is granted to the communication units (300, 301, 302, 303, 304) in a predefined order, wherein, after the end of a standby mode, a communication unit (300, 301, 302, 303, 304) checks whether it is granted access and changes to the standby mode again for a pause duration (T1, T2) until access is likely to be granted to it again if the communication unit (300, 301, 302, 303, 304) does not require access to the communication medium (110) or is not granted access.

Abstract: To allow good transmission and reception of a plurality of streams of data corresponding to respective ones of a plurality of data channels. A transmitting side transmits a plurality of streams of data corresponding to respective ones of a plurality of data channels, through a transmission path. At this time, the transmitting side inserts, into each of the plurality of streams of data, identification information for identifying the corresponding data channel. A receiving side determines to which of the data channels each of the plurality of streams of data corresponds, on the basis of the inserted identification information. Thereafter, on the basis of the determination result, the receiving side processes the plurality of streams of data.

Abstract: The present application discloses a method for generating forwarding information. The method includes: determining, by a controller, a first SFE and a second SFE that are used to forward a service stream, where the first SFE and the second SFE are on a service function chain corresponding to the service stream; generating, by the controller, first forwarding information for the first SFE and generating second forwarding information for the second SFE; and sending, by the controller, the first forwarding information to the first SFE and sending the second forwarding information to the second SFE. According to the method for generating forwarding information, the controller generates forwarding information for the SFE, so that a service chaining technology can be applied to a service environment in which a large quantity of services and a large quantity of service processing function units exist.

Abstract: A method includes receiving, by a forwarding device, M pieces of description information that are sent by a controller and are in a one-to-one correspondence with M forwarding services. Each piece of description information includes preset performance of a corresponding forwarding service and an identifier of a table to be searched, and a set including preset performance of the M forwarding services includes Q elements. The method further includes generating Q pieces of simultaneous access information according to the M pieces of description information; and determining, according to the Q pieces of simultaneous access information, that N tables are to be stored in at least one memory of the forwarding device.

Abstract: Some embodiments provide a method for channel estimation in a wireless device. According to the method, the wireless device obtains (1010) an indication that a set of antenna ports, or antenna port types, share at least one channel property. The wireless device then estimates (1020) one or more of the shared channel properties based at least on a first reference signal received from a first antenna port included in the set, or having a type corresponding to one of the types in the set. Furthermore, the wireless device performs (1030) channel estimation based on a second reference signal received from a second antenna port included in the set, or having a type corresponding to one of the types in the set, wherein the channel estimation is performed using at least the estimated channel properties.

Abstract: A method for sending and receiving a signal is disclosed, and a corresponding device and system. The method includes performing constellation mapping on a data stream to obtain a mapped signal, and performing pre-filtering on the mapped signal to convert the mapped signal into a narrowband signal filtered signal. The pre-filtering is finite impulse response filtering. A bandwidth of the narrowband signal filtered signal is less than bandwidth of the mapped signal, and the narrowband signal filtered signal is a baud rate signal. The method also includes performing waveform forming according to the narrowband signal filtered signal to obtain a shaped signal, and performing digital-to-analog conversion on the shaped signal to convert a shaped second signal into an analog signal, and sending the analog signal.

Abstract: A circuit includes a calculation circuit configured to calculate a noise power of a predetermined-training-sequence pattern repeatedly included in a first signal input into an adaptive equalizer, based on a second signal obtained by compensating the first signal by a compensation circuit, a channel-estimation value based on the second signal, and the predetermined-training-sequence pattern; and an average circuit configured to obtain an average value of estimation values of frequency offsets based on the predetermined-training-sequence pattern having the noise power equal to or smaller than a predetermined power, among estimation values of frequency offsets based on the predetermined-training-sequence pattern, wherein the compensation circuit is configured to compensate a frequency offset of the predetermined-training sequence pattern based on the average value and thereby obtain the second signal, and the adaptive equalizer is configured to perform adaptive-equalization processing of the first signal with a

Abstract: In a detection circuit, inputs correspond to received indications of vector signaling code words received by a first integrated circuit from a second integrated circuit. With four inputs, the circuit compares a first pair to obtain a first difference result and compares a second pair, disjoint from the first pair, to obtain a second difference result. The first and second difference results are then summed to form an output function. A system might use a plurality of such detection circuits to arrive at an input word. The circuit can include amplification, equalization, and input selection with efficient code word detection. The vector signaling code can be a Hadamard matrix code encoding for three input bits. The circuit might also have frequency-dependent gain, a selection function that directs one of the summation function result or the first difference result to the output function, variable gain, and/or a slicer.

Abstract: A telecommunications system is provided that can re-sample a digitized signal at a resample rate that is based on one or more factors to better utilize bandwidth. The factors can include the bandwidth of the signal that the digitized signal represents, the amount of bandwidth owned or used by the carrier, the full bandwidth of the designated RF band, the bandwidth of the serial link, the frame length of the serial link, the segmentation of the frames on the serial link, and the capability of the equipment at the receiving end of a serial link. The re-sampled signal can be transmitted to another unit that is remote to the unit transmitting the signal. The other unit can include a re-sampling device that restores the re-sampled signal to a digital signal that can be converted to an analog signal for wireless transmission.

Abstract: Provided is a transmission method that contributes to an increase in data reception quality when iterative detection is performed at a receive apparatus side. A transmit apparatus alternates between two types of modulation scheme that each shift amplitude and phase, performs mapping to constellation points according to a selected modulation scheme, and transmits a modulated signal obtained by mapping.

Abstract: A measurement apparatus, for example a digital oscilloscope, receives an amplitude modulated (AM) signal comprising a baseband signal, having a baseband waveform, modulating a carrier signal, and reconstructs the baseband waveform. The measurement apparatus: samples the AM signal at a sampling rate which produces a plurality of data samples for each period of the carrier signal; determines the amplitude of the baseband signal for each of a plurality of periods of the carrier signal from at least some of the plurality of data samples for each period; and reconstructs the baseband waveform from the amplitudes of the baseband signal for each of the plurality of periods of the carrier signal. The measurement apparatus may display the reconstructed baseband waveform on a display device.

Abstract: The invention relates to a RFID VHBR receiver comprising a quadrature digital demodulator, a symbol synchronization module at the baud rate and a PSK demodulator. The symbol synchronization module (200) receives the in-phase and quadrature samples from the demodulator and extracts the components of the PSK symbols at the baud rate by selecting a decimation point in time. This synchronization is made by taking advantage of the particular structure of the preamble of the transmission frame in a RFID VHBR receiver.