Abstract: A digital broadcasting system and a method of processing data are disclosed. The method of processing data of a transmitting system includes generating signaling information including service-related transmission parameters of mobile service data, packetizing the generated signaling information to a predetermined data packet format, primarily multiplexing the packetized signaling information and a mobile service data packet including the mobile service data, and secondarily multiplexing the primarily multiplexed data packets and a main service data packet including main service data, thereby transmitting the secondarily multiplexed data packets to at least one transmitter located in a remote site.

Abstract: An apparatus, logic, and method of performing timing and frequency estimation in a MediaFLO™ mobile multimedia multicast system comprising a receiver and a transmitter, wherein the method comprises receiving a wireless data stream comprising a MediaFLO™ mobile multimedia multicast system superframe comprising Orthogonal Frequency Division Multiplexing (OFDM) symbols; estimating a Fast Fourier Transform (FFT) trigger point for each of the received OFDM symbols; estimating a fine carrier frequency offset of each OFDM symbol; determining the start of the MediaFLO™ mobile multimedia multicast system superframe by locating a Time Division Multiplexed (TDM) pilot symbol in the superframe; estimating a coarse carrier frequency offset of each of the received OFDM symbols; and synchronizing the receiver to the start of the MediaFLO™ mobile multimedia multicast system superframe and the transmitted OFDM symbols based on the fine carrier frequency offset, the TDM pilot symbol, and the coarse carrier frequency offset.

Abstract: The present invention relates to a transmitter in a frequency division multiple access communication system. The transmitter generates a plurality of pilot symbols, and groups the plurality of pilot symbols into a plurality of groups according to a location of a subcarrier. In addition, the transmitter inverse fast Fourier transforms the pilot symbol in each group, and sequentially outputs a first pilot symbol sequence corresponding to each group. The transmitter generates a plurality of pilot blocks respectively corresponding to the plurality of groups, and converts the first pilot symbol sequence of each group into a second pilot symbol sequence of a corresponding pilot block among the plurality of pilot blocks.

Abstract: Disclosed methods and systems relate to characterizing a dynamic performance quality of service available from a storage element within a storage system. An exemplary method includes initiating a known I/O request to the storage element; measuring a time the storage element takes to respond to the known I/O request; and reporting a measure of the quality of service available from the storage element. One implementation of the method further includes using the time measurement and an estimation algorithm to calculate the quality of service and adjusting the load on the storage element based on the quality of service.

Abstract: A method of rate-control for a group of ports in a communication network. Ramping is performed for allowed-rate of each of the group of ports, if sum of the ingress-rates of the group of ports is less than a given rate threshold; and adjusting is performed for allowed-rate of each of the group of ports, if sum of the ingress-rates of the group of ports is greater than or equal to the given rate threshold, such that the sum of allowed-rates of the group of ports is equal to the given rate threshold.

Abstract: Provided are a Connection Admission Control (CAC) method and apparatus in a Broadband Wireless Access (BWA) system. The CAC method includes checking a class of a requested service; converting the transmission request rate of the service into the number of required air resource blocks by using an average block capacity of the checked class; and determining whether to admit or deny connection by comparing the number of required resource blocks with the number of available resource blocks.

Abstract: A system for rate management of communication services. The system comprises at least one group of ports sharing a guaranteed-rate; and each of the group of ports determines an allowed-rate using at least one rate management policy.

Abstract: A method includes representing a communication endpoint as a protocol stack having a plurality of protocol software modules, each of the plurality of protocol software modules providing associated protocol services for a packet flowing through the protocol software module, and enabling a test application to access internal state information of the packet as the packet moves between the plurality of protocol software modules. A computer program product and system are also provided.

Abstract: An apparatus and a method for realizing OAM function interworking between an Ethernet network and an MPLS network in network communication field. The method meets the challenge in realizing OAM functions when MPLS serves as a bearer network to bear Ethernet services, provides processing modes for all kinds of OAM functions. Based on the Ethernet-MPLS service interworking function model defined in Y.1415, interworking of Ethernet OAM functions defined in Y.17 ethoam and MPLS OAM functions defined in Y.1711 on network layer is realized, ensuring an end-to-end OAM interworking mechanism between Ethernet and MPLS networks. Processing modes for all kinds of OAM functions on the basis of the Ethernet-MPLS service interworking model in Y.1415 are provided, implementing end-to-end OAM interworking and improving communication continuity and safety between the Ethernet network and the MPLS network.

Abstract: Provided are a QR decomposition apparatus and method for a MIMO system. The QR decomposition apparatus includes: a norm calculator for calculating a vector size norm for a channel input; a Q column calculator for calculating a column value of a unitary matrix Q by multiplying a delayed channel input with ?{square root over (norm)}; an R row calculator for receiving the delayed channel input, the output of the Q column calculator, and 1/?{square root over (norm)}, and calculating a row value of an upper triangular matrix R; a Q update calculator for receiving the delayed channel input, the output of the R row calculator, and a delayed output of the Q column calculator, and calculating a Q update matrix value; and a norm update calculator for receiving a delayed output of the norm calculator and an output of the R row calculator, and outputting a norm update matrix value.

Abstract: A system and method for providing server identification to accept a server request in a vehicle wireless communications system. If the server wishes to send a request for a certain function to the vehicle, it will transmit the request and the vehicle will receive the request. If the vehicle receives a valid vehicle identification number, the vehicle will then ask the server to disconnect the communications link. The server will disconnect the communications link, and wait for the vehicle to call the server directly within a predetermined time window to confirm that it was in fact a valid server making the request. If the server confirms that it was the one making the initial request, the vehicle will perform the function.

Abstract: The present invention discloses a system and a method of dynamic QoS negotiation in NGN. The Resource and Admission Control Subsystem (RACS) provides intercommunication interfaces with Transport functional (TF) entity, Service Control Functional (SCF) entities, and Network Attachment Subsystem (NASS), and thereby, when a user terminal in NGN is to develop a service with QoS requirement, the RACS can obtain the QoS requirement parameters of a service, determine the admission control decision parameters in accordance with the QoS requirement parameters, and the RACS send the determined admission control decision parameters to the TF entity for execution, such that the QoS assurance for the service is realized. The present invention allows an end-to-end QoS negotiation in NGN in accordance with the availability of current transport network resources, and thereby can effectively improve the transport resource utilities. Therefore, the present invention can effectively ensure QoS of service transported in NGN.

Abstract: Embodiments of the present invention provide a method for reducing the capacity of a Virtual Concatenation Group (VCG) and a VCG communication network. When a network management device sends a downlink-member removing command to remove a downlink member to a Sink in the VCG, the Sink receiving the downlink-member removing command in the VCG sends, to a Source, failure state information indicating that the downlink member will be removed; the Source receiving the failure state information in the VCG sends do-not-use information to the Sink indicating that the downlink member will not be used any longer, and the Sink removes the downlink member; the network management device sends an uplink-member removing command to remove an uplink member to the Source, the Source removes the uplink member which will not be used any longer. Thus, possibility of mis-operation can be avoided fundamentally and operational freedom of an operator is enhanced.

Abstract: Improved timeout table mechanism are disclosed. By way of example, a method for providing timeout delays for data queues in a processing system includes the following steps. A timeout structure is maintained. The timeout structure includes two or more groups, each group including two or more bins, each bin having a range of timeout delay values associated therewith, each group having a weight associated therewith, the weight of each group being based on a rate and a quantity of queues assignable to each group. A timeout delay value to be assigned to a data queue in the processing system is selected.

Abstract: A method for allocating the use of an optical light-trail includes calculating a bid at a first node in the light-trail with consideration for the criticality of the node's need to transmit particular traffic on the light-trail. The method also includes transmitting the calculated bid to one or more of the other nodes included in the light-trail. In addition, the method includes receiving an acknowledgment from one or more of the other nodes included in the light-trail, each acknowledgement indicating whether the transmitted bid is higher or lower than a bid calculated by the node from which the acknowledgment originates. The method also includes determining, based at least on the content of acknowledgements received, whether the transmitted bid is the highest bid.

Abstract: Techniques and technologies are provided for dynamically selecting one of a default channel bandwidth and an alternate channel bandwidth for transmitting information over a wireless communication link which couples a transmitter node to a receiver node. The transmitter node and the receiver node are designed to transmit and receive at the default channel bandwidth and at the alternate channel bandwidth.

Abstract: The present invention discloses a method and device for implementing Och-SPRing in Wavelength Division Multiplexing system. The method includes: in the node of the optical network system, setting two switches in each working path and its backup path that pass through the node, each of which includes two input ports and one output port; when receiving signals, controlling the first switch to selectively accept the downlink service signals sent from the working path or the backup path; when sending signals, sending the uplink service signal sent from the local device respectively to one output port of uplink direction in the working path and the second switch; controlling the second switch to choose one signal among the local uplink service signal and the downlink service signal sent from the backup path to input into the uplink direction of the backup path. The method of the present invention can largely reduce construction cost of the system, save optical power budget, and improve OSNR.

Abstract: Embodiments of the present invention address deficiencies of the art in respect to multi-source messaging and provide a method, system and computer program product for sequencing multi-source messages for delivery to multiple destinations. In one embodiment, a multi-source message synchronization data processing system can be provided. The system can include a common clock and a message server configured for communicative coupling to a multiple message sources, each message source including a corresponding clock synchronized with the common clock. Multi-source message sequencing logic can be coupled to the message server and can include program code enabled to concatenate different message sequences produced by different ones of the message sources into a unified message sequence based upon timestamps applied by the message sources to messages in respective ones of the message sequences.

Abstract: The multiplexing device includes a data conversion unit which receives input of at least one of a plurality of pieces of data and executes segmentation or concatenation processing with respect to the data as required to output data which fails to exceed a predetermined limited size and which is delimited by a delimitation of a predetermined data unit, a plurality of adaptation units which are disposed in plural corresponding to the plurality of pieces of data and output data from the data conversion unit to provide the corresponding data with a function of an adaptation layer according to properties of the data, and a multiplexing layer unit which multiplexes a plurality of pieces of data from the plurality of adaptation units and sends out the multiplexed data.

Abstract: Methods, systems, and computer program products for providing transcoder-free operation in a media gateway are disclosed. In one method, first and second lists of media encoding rates and corresponding indices used by first and second media endpoints of a media stream connection are received. It is determined whether transcoder-free operation is possible for the media stream connection based on the first and second lists. In response to determining that transcoder-free operation is possible for the media stream connection, a transcoder-free connection is established in the media gateway between the first and second endpoints using a single digital signal processor to monitor and map between indices and encoding rates used by the first and second endpoints during the media stream connection.