Abstract: One embodiment provides an apparatus. The example apparatus includes a root mean square (RMS) distortion determination module configured to determine an RMS distortion error and a signal to noise and distortion ratio (SNDR), the RMS distortion error determined based, at least in part, on a portion of a transmitted pulse centered at or near a transmitted pulse maximum amplitude and the SNDR determined based, at least in part, on the RMS distortion error.

Abstract: The detection and validation of Secondary Synchronization Signal comprising generating a set of samples by performing DFT operation on a time domain LTE signal, wherein the signal comprising an LTE frame divided into an even half and odd half frame, First and second set of hypotheses from even samples in even and odd half frame are generated and third and fourth set of hypotheses from odd samples in even and odd half frame are generated using first and second hypotheses. Even half frame is selected as start of boundary of the frame when location of the peak of first hypotheses is smaller than that of second hypotheses or location of the peak of fourth hypotheses is smaller than that of third hypotheses. The physical layer cell identity is determined from the locations of the peak of the first, second, third and fourth set of hypotheses averaged over multiple frames.

Abstract: An Acknowledgment (ACK) method is provided by a receiving device in a Wireless Local Area Network (WLAN). The receiving device receives a plurality of data units having a plurality of Traffic Identifiers (TIDs) and transmits an ACK frame including a plurality of ACK information fields for at least part of the plurality of data units. An ACK information field for a data unit satisfying a first condition among the plurality of ACK information fields includes a Traffic Identifier (TID) and a block ACK bitmap indicating whether the data unit has been successfully received. An ACK information field for a data unit satisfying a second condition and having been successfully received among the plurality of ACK information fields includes the first TID and does not include a block ACK bitmap.

Abstract: A wireless receiving device removes signals of a redundant portion of each symbol of a transmission signal to extract signals of a data portion. The wireless receiving device linearly approximates, for each symbol, the overall variation in phase rotation of the symbol calculated by using the signals of the data portion to estimate the amount of phase rotation per time unit of the data portion. Subsequently, the wireless receiving device individually corrects each of the signals of the data portion according to the estimated amount of phase rotation per time unit to correct the signals of the data portion in a single symbol and over a plurality of symbols accordingly on a packet-by-packet basis. The signals of the data portion thus corrected are converted to subcarrier signals.

Abstract: A carrier aggregation transmission method and apparatus are provided. The method includes: bearing N carriers in a preset band, where N is a positive integer greater than 1, and a nominal bandwidth values of the carriers are less than or equal to 5 MHz; aggregating the N carriers, to make nominal channel spacing between adjacent carriers among the N carriers is integral multiples of 0.2 MHz; and transmitting the N aggregated carriers. Besides, by further appropriately setting the chip rate corresponding to the carriers with different nominal bandwidths, the performance of small-bandwidth and narrow-bandwidth aggregation systems is efficiently improved, and existing hardware and algorithms can be reused.

Abstract: A method for interference management at a network element within a wireless telecommunications network, and the network element and user equipment, the method coordinating transmission of cell specific resource elements with at least one other network element; and transmitting the cell specific resource element to a user equipment concurrent to a resource element transmission from the at least one other network element. Also a method for interference avoidance at a network element operating within a wireless telecommunications network, and the user equipment and network element, the method receiving interference information from a user equipment; providing the interference information to at least one interfering network element; and precoding transmissions to the use equipment for interference cancellation.

Abstract: A base station capable of communicating with a user equipment (UE) includes a transceiver configured to transmit Channel State Information-Reference Signal (CSI-RS) according to a CSI-RS configuration comprising a number of antenna ports, and downlink signals containing the CSI-RS configuration and a precoding-matrix-construction configuration for precoding matrix indicator (PMI) reporting on physical downlink shared channels (PDSCH), the precoding-matrix-construction configuration comprising a first and second sampling factors, O1 and O2, and a first and second numbers, N1 and N2, receive, from the UE, uplink signals containing a precoding matrix indicator (PMI) derived using the CSI-RS according to the precoding-matrix-construction configuration, a controller configured to convert the PMI to one of predetermined precoding matrices. Other embodiments including UEs and methods are disclosed.

Abstract: A method for transmitting an uplink signal at a UE in a wireless communication system includes, when a virtual cell ID for a reference signal for demodulation of a physical uplink channel is provided, generating a sequence of the reference signal on the basis of the virtual cell ID, and transmitting the generated reference signal to an eNB. A sequence hopping pattern of the reference signal can be determined on the basis of the virtual cell ID.

Abstract: A method of transmitting a signal using a plurality of modulation and coding schemes by a transmitter in a wireless communication system is provided. The method includes when a position of an active tone hits a position of a pilot tone of an adjacent cell, the active tone corresponding to a tone boosted through an application of a hybrid Frequency Shift Keying (FSK) and Quadrature Amplitude Modulation (QAM) Modulation (FQAM) scheme among tones included in an FQAM symbol based on the FQAM scheme in which a QAM scheme and a FSK scheme are combined, detecting two or more tones, which do not hit the position of the pilot tone among the tones included in the FQAM symbol, and transmitting signals by using the detected two or more tones.

Abstract: Methods, systems, and devices are described for supporting common reference signaling in wireless communications systems. Some configurations introduce a phase discontinuity between common reference signal (CRS) transmissions on different subframes. This may address issues that may arise when a reduced CRS periodicity is utilized. Indicators may also be transmitted from base stations to user equipment (UEs) to indicate whether phase continuity may be assumed or not. Some configurations may support CRS sequence initialization. These tools and techniques may utilize an extended CRS sequence periodicity, which may increase the number of CRS sequences transmitted by a cell.

Abstract: A method for receiving ACK/NACK (Acknow1edge/Negative ACK) information at a base station in a wireless communication system, the method includes configuring a plurality of carriers for downlink signal transmission; transmitting downlink signals including a semi-persistent scheduled downlink signal through the plurality of carriers; and receiving an ACK/NACK payload for the plurality of carriers, the ACK/NACK payload including a plurality of concatenated ACK/NACK sets, wherein each ACK/NACK set is associated with a respective one of the plurality of carriers and has one or more ACK/NACK bits, wherein the ACK/NACK payload includes an ACK/NACK bit for the semi-persistent scheduled downlink signal, and the ACK/NACK bit for the semi-persistent scheduled downlink signal is positioned at an end of a corresponding ACK/NACK set.

Abstract: Channel state information (CSI) feedback reporting is disclosed for multi-cell downlink cooperation networks. In such networks, when a user equipment (UE) has little uplink data traffic, CSI feedback is triggered by the serving base station through a downlink grant to the UE. The UE detects the CSI feedback trigger placed by the base station in the downlink grant and selects a set of uplink resources based, at least in part, on the downlink grant.

Abstract: Apparatus and methods for managing use of radio frequency channels in unlicensed radio frequency bands by a wireless communication device in communication with a cellular wireless network are disclosed. The wireless communication device obtains, from an eNodeB of the wireless network, one or more access network discovery and selection function (ANDSF) policies that include rules for mobility of the wireless communication device and offloading of traffic for the wireless communication device to radio frequency channels in an unlicensed radio frequency band. The wireless communication device determines when at least one radio frequency channel in the unlicensed radio frequency band is available for offloading traffic, for network selection, for network re-selection, or for a supplemental connection via carrier aggregation based on the ANDSF policies, measured interference levels, and/or loading information provided by the eNodeB.

Abstract: A method for collecting an Access Point (AP) is provided. The method includes detecting, by a first device, tagging of a second device; when the tagging of the second device is detected, transmitting, by the first device, to the AP, a request message for requesting access to the second device; and when the access to the second device is allowed, transmitting, to the second device, AP information required for an AP connection.

Abstract: Indicating a attribute of a dynamic subframe in the scenario of applying the dynamic TDD subframe in a time division duplexing system includes: determining, by a user equipment, an attribute of a dynamic subframe, wherein the attribute of the dynamic subframe indicates that the dynamic subframe is an uplink subframe or that the dynamic subframe is a downlink subframe; and performing an information transmission according to the attribute of the dynamic subframe.

Abstract: Provided is a communication control device that controls radio communication conducted by one or more terminal devices according to a time-division duplex (TDD) scheme, the communication control device including a configuration section that configures, for each frame that includes a plurality of subframes, a link direction configuration expressing a link direction per subframe, and a control section that signals the link direction configuration configured by the configuration section to each terminal device. The configuration section configures a first link direction configuration for a first terminal group, and configures a second link direction configuration for a second terminal group, and the control section signals the first link direction configuration to a terminal device belonging to the first terminal group on a first cycle, and signals the second link direction configuration to a terminal device belonging to the second terminal group on a second cycle that is shorter than the first cycle.

Abstract: In some aspects, the disclosure is directed to methods and systems for in-band full-duplex operation. A first device transmits a frame to a second device wirelessly within a first frequency band, in one or more embodiments. In one or more embodiments, the first device detects, while the transmission of the frame is ongoing, feedback from the second device within the first frequency band. In one or more embodiments, the feedback is in response to the ongoing transmission of the frame. In one or more embodiments, the first device determines, responsive to the feedback, whether to stop the ongoing transmission of the frame or to update a transmission parameter for the ongoing transmission within the first frequency band.

Abstract: Disclosed herein are systems, methods, and computer-readable storage media for enabling improved cancellation of self-interference in full-duplex communications, or the transmitting and receiving of communications in a single frequency band without requiring time, frequency, or code divisions. The system estimates the signal strength and phase of a self-interference signal, generates a cancellation signal based on this estimate, then uses the cancellation signal to suppress the self-interference before sampling received analog signal. After applying the cancellation signal, the system samples and digitizes the remaining analog signal. The digitized signal is then subjected to additional digital cancellation, allowing for extraction of the desired signal.

Abstract: A universal asynchronous receiver/transmitter (UART) module is disclosed. The UART module may include a receiver unit being clocked by a programmable receiver clock configured to sample an incoming data signal and comprising a counter clocked by said receiver clock, wherein the counter is reset to start counting with every falling edge of the data signal and to trigger a BRK detection signal if the counter reaches a programmable threshold value.

Abstract: System, methods and apparatus are described that facilitate transmission of data, particularly between two devices within an electronic apparatus. A configurable clock tree includes a delay matrix that may be configured such that each the timing of clocks for each of a plurality of data lanes can be optimized for minimum skew. Selections between different versions of a base clock signal and different paths available to the selected version may provide a root clock used for transmitting data on a communications link. The versions of the one or more clock signals may include three versions of a first clock signal. Each version of the first clock signal may be subject to a different delay with respect to the clock signal.

Abstract: The present invention is directed to communication systems. According to embodiments of the present invention, a communication system includes at least two communication lanes and a skew management module. The skew management module generates a control current based on output test patterns of the two communication lanes. The control current is integrated and compared to a reference voltage by a comparator, which generates an analog offset signal. A PLL of one of the communication lanes generates a corrected clock signal that is adjusted using the analog offset signal to remove or adjust the skew between the communication lanes. The corrected clock signal is used for output data. There are other embodiments as well.

Abstract: An example information encryption method that includes acquiring to-be-encrypted information and converting the to-be-encrypted information into a polynomial of a predetermined format; extracting biometric information, and acquiring biometric data; and substituting the biometric data into the polynomial for calculation to acquire a value of the polynomial and using a two-dimensional dataset including the biometric data and the value of the polynomial corresponding to the biometric data as first encrypted information. The techniques of the present disclosure improve the security of information encryption, and reduce the risk of illegal decryption of encrypted information.

Abstract: A user device and one or more server computers securely evaluate a k-nearest neighbor model, with reasonable computation speed and bandwidth utilization, using a combination of techniques. The user device encrypts input vectors using a client's public key to keep client information private. The server computer homomorphically computes a distance between the encrypted input vector and vectors stored in the k-nearest neighbor model. The server computer then engages in a minimization process which results in the user device receiving classification vectors corresponding to the k-nearest neighbors.

Abstract: In one embodiment, a tunnel to be affected by configuration of a service in a network is identified and key information for the identified tunnel is obtained from a corresponding router. The tunnel is assigned to a key group based on the key information, and provisioning information associated with the tunnel on the router is updated based on the assigned key group in conjunction with configuration of the service. The updating of the provisioning information may comprise altering the key information on the router to include a key associated with the assigned key group. Also, one or more keys not associated with the assigned key group may be deleted from the router and from a management entity of the network.

Abstract: Computationally implemented methods and systems are described herein that are designed to, among other things, receiving a level-two encrypted output of a surveillance device; decrypting at least a part of the level-two encrypted output of the surveillance device with a level-two decryption key that is practicably inaccessible by a level-two encryption entity; and transmitting a level-one encrypted output of the surveillance device.

Abstract: In one aspect, systems and methods to improve a cryptosystem include computer-implemented operations such as scanning a biometric attribute for comparison with stored biometric data, and generating a keystream based upon the stored biometric data if the scanned biometric attribute substantially matches the stored biometric data. The computer-implemented method may also include operations for encrypting object data, and encrypting final data based upon the keystream and the encrypted object data.

Abstract: A method of restoring confidential information items of a first device to a second device by using a set of servers. The method generates a public and private key pair and ties the private key to the hash of executable code of the servers at the time of generating the public and private keys. The method receives the encrypted confidential information items in a secure object which is encrypted with a user-specific key and the public key. The method only provides the confidential information to the second device when the second device provides the same user-specific key as the key that encrypts the secure object and the hash of the executable code of the servers at the time of accessing the private key to decrypt the secure object matches the hash of the executable code running on the servers at the time of generating the private key.

Abstract: Systems for the automated capture of forensic data information are presented. An example system may receive an access/modification request directed to a data item(s), generate an initial data capture record for the data item(s), and send the record to an isolated, secure data preservation module before granting the request. After the access/modification, the system may generate a post-access data capture record and send it to the preservation module. The system may determine the content of the generated records, based on, e.g., content of the data item(s), before generation. For example, the system may determine a first content type for records where data item(s) include critical data, and a second content type for records that do not, to, e.g., efficiently allocate system resources while minimizing any disruption to an accessing user. The system may also utilize different encryption and decryption key techniques based on, e.g., the content of the data item(s).

Abstract: Systems and methods for enhanced security of media are provided. Media security may be enhanced by improving the setup of encryption and/or decryption, by improving the performance of encryption and/or decryption, or by improving both. The calls related to enhanced security of media from an application in an emulated environment to a security module in the operating system hosting the emulated environment may be combined to reduce the overhead of accessing a security module. An application handling secure shell (SSH) communications may execute multiple calls to a cryptographic module in the host operating system. Because many calls to the cryptographic module during SSH communications follow patterns, two or more related calls may be combined into a single combined call to the cryptographic module. For example, a call to generate a server-to-client key and a call to generate a client-to-server key may be combined into a single call.

Abstract: A method for distributed trust authentication of one or more users attempting to access one or more service providers operating on a network includes performing primary authentication of a user using a first authentication factor, generating a first partial digital signature for a first authentication response to the primary authentication, performing secondary authentication of the user using a second authentication factor, generating a second partial digital signature for the second authentication response to the secondary authentication, combining the first and second partial digital signatures to form a composite digital signature, and validating the composite digital signature.

Abstract: A system and method for authenticating and enabling functioning of a manufactured electronic device are disclosed.

Abstract: Power management techniques for a network device providing services to other network devices. In one embodiment, a first device communicates requests for access to and release of a resource (such as a media serving service) hosted by a second device. Power management functionality in the second device selectively controls power to the resource based, at least in part, on such requests. For example, a resource may be placed in an inactive state following receipt of a request for release of the resource. Access to the resource may be provided through a network interface that is separately activated or deactivated by the power management functionality. In further embodiments, information relating to the state of the resource and/or network interface is provided by a proxy device.

Abstract: Provided is a method and apparatus for controlling a charging condition and policy by a first entity, in which information for policy decision information is received from a second entity and an acknowledgement message is transmitted to the second entity. A policy based on the information for policy decision information is determined, the policy is transmitted to a third entity, and an acknowledgement message for the policy is received from the third entity.

Abstract: A method is provided in one example embodiment and may include receiving a first Internet protocol (IP) flow for an IP session for a subscriber; selecting a first service function group from a plurality of service function groups to perform one or more services for the IP session for the subscriber, wherein each of the plurality of service function groups comprises a plurality of service function chain types and wherein each service function chain type comprises an ordered combination of one or more service functions; assigning the IP session for the subscriber to the first service function group; and forwarding the first IP flow for the IP session of the subscriber across a first service function chain type for the first service function group based, at least in part, on a service policy for the subscriber.

Abstract: The embodiments disclose a method and communication node for configuring a multicast group in a Multiple Protocol Label Switching (MPLS) network. The method comprises: obtaining a multicast group configuration request to configure the multicast group of at least one downstream node in the MPLS network, the at least one downstream node may comprise a transit node, a leaf node or the combination thereof; generating a multicast group configuration packet based on the multicast group configuration request; and transmitting the multicast group configuration packet from the root node to the at least one transit node and/or leaf node via a multicast tree in the MPLS network.

Abstract: The method of establishing a multicast data channel in a network virtualization system includes: creating, on a controller, a virtual remote logical interface for an external interface of a remote node; generating, a multicast tree tunnel that uses a core node as a root, and obtaining a multicast protocol packet sent by a device outside the network virtualization system; acquiring, a multicast source address and a multicast group address from the multicast protocol packet, and generating a multicast forwarding table; searching, the multicast forwarding table for an external interface of the core node, searching for an outbound interface of the multicast tree tunnel on the core node according to the multicast tree tunnel, and generating a P2MP PW forwarding table of the core node, and sending the P2MP PW forwarding table of the core node to the core node. The method implements a multicast service in a virtual cluster router.

Abstract: A method for providing enhanced broadband services over a communications network includes the steps of: receiving from the communications network at least first signals in a first frequency band, the first signals comprising programming material that has been converted from a second frequency band and/or material originally generated in the first frequency band to be converted to the second frequency band, the first and second frequency bands being non-overlapping; translating one or more first signals from the first frequency band to the second frequency band; and combining the one or more first signals translated to the second frequency band with the first signals in the first frequency band to generate combined programming material comprising one or more signals in the first frequency band and one or more signals in the second frequency band for reception by receiving location equipment.

Abstract: A first device is installed at a first location in a first space visible to a user. A second device is installed at a second location in a second space not visible to the user. A device control method acquires line-of-sight information indicating a line-of-sight direction of the user from a camera. The line-of-sight direction of the user is determined based on the line-of-sight information. In a case where the line-of-sight direction indicates a third location other than the first location, the second device is identified as an object of control. Sound data indicating speech of the user is acquired from a microphone, a control command corresponding to the sound data is generated, and the control command is transmitted to the object of control.

Abstract: Provided are a method, apparatus, and system for sharing usage information of daily life. Usage information sharing system includes: a first home network including at least one electronic device generating metadata with respect to human behavior; a first collecting device collecting metadata with respect to usage information from first home network; a second collecting device transmitting metadata of first home network that is received from the first collecting device to a second home network; and a second home network comprising at least one electronic device receiving the metadata from the second collecting device and performing an operation corresponding to the metadata. Accordingly, behavioral actions of a person in daily life can be dynamically recognized via a home network and home electronic devices and converted into metadata, and transmitted to another home network in real-time via a network. Thus, the experiences and feelings of a user can be dynamically shared.

Abstract: A LIN communication system includes a master controller, and at least one slave controller connected to the master controller via local interconnect network (LIN) communication. The master controller allows the at least one slave controller to enter a sleep mode in a normal situation through a sleep mode message of an unconditional frame provided via the LIN communication and checks a failure state of the at least one slave controller in an abnormal situation.

Abstract: Networking systems and, more particularly, processes of limiting MAC address information in a forwarding table in data center networking systems are provided. The method includes limiting MAC address information in a forwarding table in leaf switches of a local area networking system by learning, for each of the leaf switches, only MAC addresses from directly connected hosts.

Abstract: A method is provided in one example embodiment and includes configuring on a network element a first tunnel from the network element to a first network, wherein the configuring comprises mapping a nexthop address of the local network element to a transport address of the tunnel on the network to create a first nexthop-to-transport mapping for the network element; and advertising the first nexthop-to-transport mapping along with routing information for the network element to remote network elements.

Abstract: A method for applying network services to data traffic forwarded between virtual private network (VPN) sites includes: receiving a data packet addressed to a target site associated with the VPN, determining services to be applied to the data packet according to a service chain, where the determining is a function of at least one of the VPN, the origin site or the target site, adding an indication of a VPN forwarding context onto the data packet, encapsulating the data packet with Network Service Header encapsulation, where a header for the encapsulated data packet indicates at least the service chain; forwarding the encapsulated data packet in accordance with the service chain, receiving the encapsulated data packet at the end of the service chain, terminating the service chain, removing the encapsulation, and forwarding the data packet to a target destination per the indication of a VPN forwarding context.

Abstract: A system and method of defining the topology of a network-on-chip. The IP sockets and their data transfer connectivity are defined. The location of each IP socket is defined. A number of switches are defined so that there is at least one switch within a distance from each IP socket, the distance being less than that over which a signal propagates within one clock cycle period. The switches are coupled by links. Links may comprise pipeline stages, storage buffers, and are characterized by a data width.

Abstract: Combinational networks may provide simultaneous connectivity over networks of different network types between user equipment. A communication session, comprising a circuit switched call and one or more packet switched sessions, may be deployed simultaneously over different network types, in relation to the same user equipment. The circuit switched call and the packet switched session can be correlated, in which case the communication session is regarded as a combinational session. By introducing a number of logical databases that contain actual data on network addresses and communication sessions, a correlation check is deployed applied by a correlation node. The check consists of a number of queries towards said databases or to other network entities, yielding whether the communication session is to be regarded as combinational. The result of the check may e.g. be deployed in an on-line combinational charging system.

Abstract: There is provided a method of estimating channel spread at a receiver of a user equipment, UE, for one antenna port of a network node. The method is performed in the UE. The method comprises acquiring channel estimates for one antenna port of a network node. The method further comprises determining a variation of acquired channel estimates representing subframes associated with a common precoder, the subframes comprising resource blocks scheduled to the UE. The method further comprises estimating the channel spread by using a pre-determined mapping from the determined variation to a channel spread value. A user equipment and a computer program are also provided.

Abstract: Certain aspects of the present disclosure provide an apparatus for wireless communications. The apparatus comprises an interface configured to receive a plurality of channel estimation sequences, wherein each one of the plurality of channel estimation sequences is received on a respective one of a plurality of channels, each one of the plurality of channels having a respective one of a plurality of frequency bands. The apparatus also comprises a processing system configured to generate a channel estimation for each one of the plurality of channels using the respective one of the plurality of channel estimation sequences, and to generate a collective channel estimation based on the channel estimations.

Abstract: A method for estimating a channel state of an audio/video signal includes: estimating a first response and a second response according to the audio/video signal, wherein the first response corresponds to an echo path and the second response corresponds to a reference path; calculating a plurality of phase differences at a plurality of time points between the first response and the second response; determining whether the echo path is a Doppler path according to the phase differences; and when it is determined that the echo path is the Doppler path, calculating a phase rotation frequency of the Doppler path according to a difference between at least two of the phase differences.

Abstract: Methods and systems for obtaining improved joint channel estimates for a multi-user, frequency-multiplexed data transmission such as SC-FDMA or OFDM begins by estimating separate contributions of users (and/or other signal sources) to the received signal based on joint frequency domain channel estimates. A reduced data set is obtained by subtracting contributions of one or more users from the received data, leaving only the estimated contributions of the remaining users, with noise and residual estimation error signal. Time domain joint channel estimation is then performed on the reduced data set, which is feasible because the number of users has been reduced. In exemplary embodiments, the reduced data set includes only one estimated user contribution. This process is repeated to obtain time domain estimates for all of the users. The method can be repeated by using the TD channel estimates to re-estimate the user contributions and calculate revised TD channel estimates.

Abstract: A system for digitally equalizing a data channel with heavily ISI-induced signals received after passing a data communication channel using a combination of a linear equalizer and a nonlinear equalizer, which comprises an ADC, for sampling a received signal and converting it to a digital form; a Linear Equalizer for pre-processing said received signal, said Linear Equalizer is adapted to pre-process a first group consisting of echoes/channel taps of the induced ISI, which are not equalized by said nonlinear equalizer, by eliminating the echoes/channel taps of said first group; pre-process a second group consisting of the combination of the entire echoes/channel taps of the induced ISI, by eliminating the echoes/channel taps of said second group; and a nonlinear equalizer for receiving the signals preprocessed by said Linear Equalizer and for further processing said preprocessed signals and eliminating the echoes/channel taps of the induced ISI to be equalized by said nonlinear equalizer, thereby compensating