Abstract: Systems and methods for synchronizing filter records between a mobile device and a network node are described herein. Upon detection of a precedence contention when installing filters at the network node, a synchronization command can be initiated to synchronize the filter records between the mobile device and the network node.

Abstract: A network terminal has communication section that communicates with other network terminals connected via a network, time-series data creation section that, at timing set beforehand, creates time information including a correspondence between an identification number of the own network terminal and a current time measured by a timer of the own network terminal and creates time-series data registering the time information, and additional registration section that, when the communication section receives the time-series data transmitted from another network terminal, creates time information including a correspondence between the identification number of the own network terminal and a current time measured by the timer of the own network terminal and additionally registers the time information to the time-series data received this time.

Abstract: A system and associated methods are disclosed for routing communications amongst computing units in a distributed computing system. In a preferred embodiment, processors engaged in a distributed computing task transmit results of portions of the computing task via a tree of network switches. Data transmissions comprising computational results from the processors are aggregated and sent to other processors via a broadcast medium. Processors receive information regarding when they should receive data from the broadcast medium and activate receivers accordingly. Results from other processors are then used in computation of further results.

Abstract: A system and method are provided for adaptive synchronization of timing information provided in communications messages transmitted between independently clocked communication nodes of a wireless communications network. The system and method include measures for collecting timestamps of messages generated by a plurality of the nodes, each timestamp being generated by one of the nodes relative to a local time reference thereof. A pairwise clock error is computed for at least one pair of nodes based upon a plurality of network messages passed therebetween. A global time reference is adaptively established for the timestamps responsive to the pairwise clock error. A plurality of mapping factors are defined each for translating from one local time reference to the global time reference. The mapping factors are selectively applied to corresponding ones of the timestamps.

Abstract: Systems, methods, and processor readable media are disclosed for encoding and transmitting first media content and second media content using a digital radio broadcast system, such that the second media content can be rendered in synchronization with the first media content by a digital radio broadcast receiver. The disclosed systems, methods, and processor-readable media determine when a receiver will render audio and data content that is transmitted at a given time by the digital radio broadcast transmitter, and adjust the media content accordingly to provide synchronized rendering. In exemplary embodiments, these adjustments can be provided by: 1) inserting timing instructions specifying playback time in the secondary content based on calculated delays; or 2) controlling the timing of sending the primary or secondary content to the transmitter so that it will be rendered in synchronization by the receiver.

Abstract: A method of aligning clock signals in multiple transceiver channels on an integrated circuit may include adjusting a slave clock signal at a slave transceiver channel based on a master clock signal received from a master transceiver channel. A clock generation circuit and/or a delay circuit in the slave transceiver channel may be used to adjust the slave clock signal to produce an intermediate slave clock signal. The master clock signal may be adjusted based on the intermediate slave clock signal received at the master transceiver channel to obtain a total adjustment value. The phase of the intermediate slave clock signal may further be adjusted at the slave transceiver channel based on the total adjustment made at the master transceiver channel.

Abstract: A wireless broadcast system that collects content for distribution over a wireless communication network. The content stream is encapsulated into a stream of transport packets for broadcast over the wireless communication link. The stream of transport packets are simultaneously broadcast as part of an identical signal from a plurality of synchronized transmitters in a single frequency network. A receiver acquires the broadcast signal and synchronizes to the signal. Once the receiver is synchronized to one of the transmitters in the single frequency network, the receiver can receive signals from any, or multiple, of the transmitters in the network without re-synchronizing.

Abstract: Systems and methodologies are described that facilitate synchronizing base stations in a wireless communication environment. A base station can receive a synchronization signal sent via a low reuse channel, which can be shared by a group of base stations. Further, the base station can align a clock associated therewith to the received synchronization signal. Moreover, the base station can coarsely align the clock to a first synchronization signal received upon a first subset of resources of the low reuse channel, and finely align the clock to a second synchronization signal received upon a second subset of resources (e.g., of the low reuse channel, of a separate channel, . . . ), where the second subset of resources can be reserved for transmission from at least one base station with at least a predetermined level of synchronous accuracy.

Abstract: Systems and methods for addressing the de-synchronization of the cryptosync between the network and the mobile stations (eNB) that can occur at mobility are addressed. De-synchronization is resolved by forwarding HFN and PDCP Sequence Number(s) from the source eNB to the target eNB. In order to avoid re-use of a cryptosync for a given key, a backward offset from the initial COUNT value is used by the target eNB. These approaches do not require an over-the-air signaling and the COUNT value handling in the network is transparent to the mobile station.

Abstract: A repeater (1) particularly suitable for a time-division duplex transmission of communication signals is provided. The repeater (1) comprises a master unit (2) for communicating with a base station (3) of a wireless network, at least one remote unit (4) for communicating with a network terminal, as well as a waveguide (11) connecting the remote unit (4) with the master unit (2) for transmitting the communication signals in an uplink direction (6) from the remote unit (4) to the master unit (2) and in a downlink direction (5) from the master unit (2) to the remote unit (4). Both the master unit (2) and the remote unit (4) comprise one switch (19, 20) each for changing over the signal transmission between uplink direction (6) and downlink direction (5).

Abstract: In order to select a synchronization signal higher in accuracy, thereby increasing the accuracy of the time synchronization, it is provided a network node for transferring data in a network, comprising: a network interface having a plurality of ports; a transfer control module; a time synchronizing module; a fluctuation measurement module; and a clock. The time synchronization module uses a received time synchronization packet to synchronize the clock. The fluctuation measurement module determines an accuracy of a time contained in the received time synchronization packet based on a result of comparison between the time contained in the received time synchronization packet and a time of the clock.

Abstract: An arrangement for adjusting a clock signal in a network element of a communications network includes a processor device arranged to produce a control variable containing information about synchronization messages received from at least two other network elements. A situation in which the reception from a sending network element of synchronization messages of a good enough quality ceases will not significantly disturb the clock signal to be adjusted because only part of the control variable used for the adjustment depends on synchronization messages sent by an individual network element. In a preferred arrangement, the reference value of the control variable is changed in response to a situation where the reception from a sending network element of synchronization messages of a good enough quality ceases. Thus it is possible to reduce the change of the difference between the control variable and its reference value which further reduces disturbances caused in the clock signal to be adjusted.

Abstract: The present invention provides a method for range extension is wireless communication systems. One embodiment of the method includes determining whether a mobile unit is within a first range corresponding to a range of timing advances supported by a timing advance command. This embodiment also includes transmitting a plurality of timing advance commands to the mobile unit when the mobile unit is outside the first range so that the mobile unit can synchronize with the base station by combining information in the plurality of timing advance commands.

Abstract: The invention concerns a device for transmitting packets in a packet communication network comprising at least two stations, characterized in that it includes means for: extract image cues from a synchronizing signal, initializing a first counter based on said image cues, initializing a second counter every “m” zero crossing of the first counter, sampling the second counter at all the Tech periods, where Tech is derived from a time base synchronized on all the network stations, and transmitting packets containing the samples in the network. The invention also concerns a device for receiving packets in a packet communication network comprising at least two stations.

Abstract: Disclosed are externally connected time port changeover method and device. The method includes: a node serving as a GM node transmitting time information via a first externally connected time port of the node; if the first externally connected time port fails, the node updating current node priority and GM node priority of the node as preset node priority which is node priority configured for the node when the node is activated; and the node judging whether a second externally connected time port of the node is up and the priority of the second externally connected time port is higher than the current GM node priority, if so, activating the second externally connected time port to transmit the time information. The problem that when the currently selected time access port has failed, changeover among ports cannot be completed in time is solved, thus improving the stability of the time synchronization network.

Abstract: RFID tags are used for many purpose including tracking. RFID interrogators are used to retrieve information from tags. In many applications, a plurality of RFID interrogators are required. Synchronization between interrogators in the same theatre of operation is critical to ensure that their broadcasts do not interfere with each other. In fixed RFID interrogator applications, RFID interrogators can be wired together allowing a channel to synchronize the transmissions of the RFID interrogators. Methods described herein can ensure that synchronization is maintained in the event of the failure of a synchronizing master. Furthermore, additional methods for synchronizing RFID interrogators in wireless applications are described allowing synchronization in the absence of wired connections between interrogators.

Abstract: A network comprises at least one network device and a plurality of unconnected network ports, the apparatus comprising: a send component for sending an identification message to each network device; a receive component, responsive to the send component sending the identification message, for receiving at least one identification response from the network; an analyze component, responsive to the receive component receiving an identification response, for determining the plurality of unconnected network ports comprising a first network port; an identify component, responsive to the analyze component determining the plurality of unconnected network ports, for determining the first network port; and a send component, responsive to the identify component determining the first network port, operable for sending a first location message to the first network port.

Abstract: A radio communication apparatus that performs radio communication with another communication apparatus includes an antenna unit, a contact detecting unit that detects contact with the another communication apparatus, a first modulating and demodulating unit for performing communication in a state in which the radio communication apparatus is remote from the another communication apparatus, a second modulating and demodulating unit for performing communication in a state in which the radio communication apparatus is in contact with the another communication apparatus, and a control unit that performs control to perform radio communication with the another communication apparatus via the antenna unit by selecting the first modulating and demodulating unit while the contact detecting does not detect contact with the another communication apparatus and selecting the second modulating and demodulating unit when the contact detecting unit detects contact with the another communication apparatus.

Abstract: Synchronization of two or more items can be optimized through the use of parallel execution of synchronization tasks and adaptable processing that monitors and adjusts for system loading. Two or more synchronization tasks required to be performed for an item can, if not inherently serial in nature, be performed in parallel, optimizing synchronization of the item. Even if multiple synchronization tasks required for one item must be serially executed, e.g., download the item prior to translating the item, these synchronization tasks can be executed in parallel for different items, optimizing a download request involving two or more items. Moreover, multiple threads for one or more synchronization tasks can be concurrently executed when supportable by the current operating system resources. Rules can be established to ensure synchronization activity is not degraded by the overextension of system resources.

Abstract: A wireless device receives a control command causing transmission of a random access preamble on a reference secondary cell in a secondary cell group. The reference secondary cell is employed as a timing reference to transmit first uplink signals in the secondary cell group. The wireless device receives a random access response comprising a timing advance command for the secondary cell group. The wireless device, autonomously and when a predefined condition is met, selects a new activated secondary cell in the secondary cell group as the timing reference.

Abstract: Disclosed is a method capable of minimizing a period of time required for a handover network acquisition procedure when a handover occurs between communication networks which provide communication services using different mobile communication technologies. When a modem for a handover communication network performs network acquisition due to the occurrence of a handover, the modem previously extracts information about a handover channel from a Universal Handover Direction Message (UHDM), and uses the extracted channel information in a network acquisition procedure. Accordingly, the modem for a handover communication network can easily acquire a handover network even without using a preferred roaming list, and can omit an radio frequency (RF) tuning procedure by extracting a corresponding code division multiple access (CDMA) channel from the received UHDM, thereby reducing the total handover processing time period and increasing the success rate of the handover.

Abstract: Methods and apparatus related to peer to peer communication networks are described. A peer to peer timing structure is implemented which includes recurring peer discovery intervals and traffic intervals. Some embodiments further include recurring paging intervals for peer to peer pages. A wireless communications device, supporting peer to peer communications and storing information defining the timing structure, determines a time reference point, facilitating a coarse level of synchronization with respect to the timing structure. The time reference point is determined based on a broadcast signal received from a communications device, e.g., a satellite, base station, or beacon signal transmitter. Multiple peer to peer wireless communications devices in a local vicinity thus obtain the same basic understanding as to the current relative point in time with respect to a common recurring peer to peer timing structure.

Abstract: Certain aspects of a method and system for speed negotiation for twisted pair links in fiber channel systems are disclosed. Aspects of a method may include communicating data between fiber channel host devices communicatively coupled via a twisted pair link based on a common speed negotiated between the fiber channel host devices. At least one available speed may be determined for the communication of data between the fiber channel host devices over the twisted pair link. The determined available speeds for each of the fiber channel host devices may be exchanged via at least one fast link pulse signal. The common speed negotiated may be a highest available speed for the communication of data between the fiber channel host devices.

Abstract: A method is provided for detecting scrambling of a radiocommunication network. The method is applied by a radiocommunication circuit capable of being connected to the network by being synchronized on a radiocommunication channel. The method includes a final detection phase, having the following steps: detection of verification of the following final condition: there are N radiocommunication channels on which the radiocommunication circuit cannot be synchronized despite detection of a power level normally sufficient for being synchronized, where N>2; and if the final condition is verified, generation of a final scrambling signal with a probability of scrambling equal to 100%. The method also includes at least one intermediate detection phase, having the following steps: detection of verification of at least one intermediate condition; and if the at least one intermediate condition is verified, generation of an intermediate scrambling signal with a probability of scrambling of less than 100%.

Abstract: A base station configures a primary cell group and at least one secondary cell group in a wireless device. The wireless device transmits first uplink signals in the secondary cell group employing a reference secondary cell in the secondary cell group as a timing reference. The wireless device autonomously selects a new activated secondary cell in the secondary cell group as the timing reference. The new activated secondary cell is different from the reference secondary cell. The wireless device transmits second uplink signals in the secondary cell group employing the new activated secondary cell as the timing reference.

Abstract: A base station configures a primary cell group and at least one secondary cell group in a wireless device. The wireless device transmits first uplink signals in the secondary cell group employing a reference secondary cell in the secondary cell group as a timing reference. The wireless device autonomously selects a new activated secondary cell in the secondary cell group as the timing reference. The new activated secondary cell is different from the reference secondary cell. The wireless device transmits second uplink signals in the secondary cell group employing the new activated secondary cell as the timing reference.

Abstract: The time synchronization system according to the present invention can allow the master and slave time Tx/Rx devices to communicate information therebetween via two-way interactive wireless communication, so that it can rapidly detect an error that occurs in the system, via a monitoring device and a network management device for performing real-time integral management. Therefore, the system can reduce the user's system maintenance fee and can also maximize efficiency. In addition, the time synchronization system can allow for the easy extension of the equipment construction coverage area even in a long distance environment, by installing only repeaters, and can manage log information that may be used as evidence data for various incidents.

Abstract: The present invention is a system and method for enabling multicast synchronization of initially unicasted content. Multiple unicast streams are synchronized in order to convert the unicast streams into a multicast stream. Each unicast stream may be accelerated or slowed down in relation to a reference stream to a common point within each stream upon which the unicast streams are replaced by a multicast stream of the same content.

Abstract: A method, system and master service interface transfer differential timing over a packet network. The transmitting service interface receives a service clock and is coupled to a receiving service interface through a network backplane. A primary reference clock is provided to time the network backplane. The primary reference clock and the service clock are used to synthesize a copy of the service clock connected to the transmitting service interface. A first control word containing an error differential between the service clock and the synthesized copy of the service clock is generated and transmitted through the network backplane via a packet. The first control word, together with the primary reference clock, is used to recreate the service clock for timing the receiving service interface.

Abstract: Embodiments of the present invention set forth a method and system for reducing uncertainty in receive and transmit timestamps created by an NTP server. The uncertainty in the receive timestamps is removed by recording the time-of-arrival in the hardware clock of the NTP server before the incoming packets may be delayed by traversing the various layers of software in a timestamping system. The uncertainty in the transmit timestamps is removed by giving the outgoing packets a timestamp in the future using an estimate of the transmission latency calculated by the latency estimator filter. Subsequently, the actual time-of-departure is used to re-calculate and update the estimate of the transmission latency. In this fashion, superior control of the timestamping function may be implemented in existing NTP servers in a manner that retains interworking compatibility with the current NTP standards.

Abstract: A novel alternative concept for handling dynamic provisioning changes and ongoing network reconfiguration and incremental reoptimization in general. A prime motivation is concern about the dependency of existing concepts for dynamic provisioning on the real-time coherence of databases of network state at diverse geographic locations. Not only is the continual updating of such global state everywhere in the network an intensive real-time load, but inevitable incoherencies pose hazards in network operation. The alternative proposal is a framework that makes use precise time synchronization and the computational power of network nodes to solve identical local instances of incremental reoptimization problems in situ. The new scheme removes the database coherency hazard, reduces signaling volumes, and increases resource efficiencies in service provisioning. It also provides a framework in general for continually ongoing incremental or (if desired) total reoptimization of network configuration.

Abstract: A system recovers a local media clock from a master media clock based on time-stamped packets received from a transmitter. The packets may include audio, video, or a combination of both, sampled at a rate determined by the master media clock at the transmitter. Timestamps in the packets may be based on values of a remote real-time counter at the transmitter that is synchronized with a local real-time counter at a receiver. The local media clock may be syntonized with the master media clock through the clock periods. The clocks may be synchronized by syntonizing the clocks and adjusting the phase of the local media clocks based on timestamps and a real-time counter.

Abstract: Time-interleaved analog-to-digital (AD) conversion circuit, which includes first and second AD converters that generate first and second digital signal sequences by converting an analog input signal into first and second digital signals with a first frequency at first and second timings mutually different with each other is disclosed. The AD conversion circuit further includes a FIFO that receives the first and second digital signal sequences, and a correction filter including first and second portions that are supplied with a common clock signal. The correction filter generates a first corrected digital signal sequence by adding the first synchronized digital signal sequence and the second synchronized digital signal sequence passed through the first portion of the correction filter, and a second corrected digital signal sequence by passing the second synchronized digital signal sequence through the second portion of the correction filter.

Abstract: A reliable synchronization apparatus and method within a multicast and broadcast service (MBS) zone having m sync executers (SEs) belonging to n retransmission zones is provided. Each retransmission zone has a selected leader SE and other member SEs. The apparatus comprises a sync controller and the n selected leader SEs. When the Sync controller multicasts a sync ruler to all SEs in a retransmission zone, the leader SE that loses the Sync ruler sends a NACK message to request the sync controller to retransmit the sync ruler. An election is triggered for updating leader information and announcing election to all SEs. The member SE that loses the sync ruler sends a NACK message to request its leader or the Sync controller to retransmit the sync ruler.

Abstract: A communication system includes a transmitter and receiver. The transmitter includes a detector configured to detect an error amount of an edge position of a pulse signal caused by sampling; and a multiplexer configured to include a value indicating the detected error amount in a multiplexed signal. The receiver includes a demultiplexer configured to demultiplex the multiplexed signal and output a value indicating an amplitude of the pulse signal and the value indicating the error amount of the pulse signal; and a corrector configured to correct an edge position of the pulse signal using the error amount of the pulse signal, where the edge position is obtained from the value indicating the amplitude of the pulse signal output from the demultiplexer.

Abstract: The invention relates to a method for transmitting signals termed useful signals via a satellite by means of connection stations. To this end, a first connection station (CNX1) carries out the generation of a first service signal on a service carrier frequency dubbed the pilot signal (Fp), and the transmission of this pilot signal to at least one second connection station (CNX2). The use of this pilot signal ensures phase synchronization and temporal synchronization of the signals so as to implement a transmit diversity, that is to say to toggle the transmission of the useful signal by this second connection station without loss of phase synchronization between the two stations. The invention applies to the Frequency Division Multiple Access (FDMA) signal communications by satellites.

Abstract: Various embodiments facilitate data communication between a client device and a remote device over a voice channel of a telephone system. In one embodiment, the data communication over the voice channel is synchronized to align with voice frames utilized by the telephone system to transmit communicated data between the devices. In some embodiments, the synchronization is performed by determining an offset between a received synchronization audio signal and the voice frames used by the telephone system to process the synchronization audio signal, such as based on an amount of energy present in the received synchronization audio signal.

Abstract: For adding additional data, such as multi-channel extension data, to base data, such as conventional stereo data, a test fingerprint of test data relating to a test time instant of the test data is provided. The test data equals the additional data or the base data or depends on the additional data or the base data in parametric manner. Using the test fingerprint, reference time instant information is determined, which depends on a reference time instant in reference data, the reference data being the conventional stereo data. Finally, the additional data or the base data is manipulated, namely using the reference time instant information and the test time instant information, to obtain manipulated data, by which synchronous reproduction of the data information can be performed. Thus, a robust and flexible possibility for synchronous, especially late extension of base data by additional data is obtained.

Abstract: Relay devices and sink devices that provide synchronized audio and/or video outputs are described. A relay device receives a first communication packet from a source device. The first communication packet includes a data frame. A timestamp is generated. The timestamp is an estimate of a time at which content defined by the data frame will be “played.” A second communication packet is generated that includes the data frame and the generated timestamp. The second communication packet is transmitted from the relay device. In one implementation, the generated timestamp is received by a plurality of sink devices, and is used to synchronize output signals (e.g., sound and/or video images) of the sink devices. In another implementation, the generated timestamp is received by a sink device, and is used to synchronize an output signal of the sink device with an output signal of the relay device.

Abstract: A method and a multimode terminal for minimizing current consumption and simultaneously reducing a handover processing time when a handover occurs between communication networks which provide communication services using different mobile communication technologies. The communication network modems of the multimode terminal are interconnected via a one-to-one communication path, so that a handover target communication network modem is powered on only when handover actually occurs. In this way, by efficiently determining a time point when the handover target communication network modem is powered on, a processing time according to the occurrence of handover can be reduced, and additional current consumption can be minimized.

Abstract: Apparatus and methods for synchronizing a network element (e.g. access points, femtocells, etc.) to a master network (such as a cellular network) to provide accurate frequency and/or time references for their internal systems. In one embodiment, the network element utilizes a dedicated receiver (or transceiver) to receive timing information from the master network. The implementation of the dedicated receiver is advantageous for cost and simplicity reasons. Furthermore, the timing or frequency information, as received from the master network, is used to correct the network element's internal timing. In addition, the network element's internal timing can operate in open-loop mode, if no master network can be found, thereby allowing for the device to continue providing service to network users. Additionally, a dedicated receiver can also receive information (e.g. location, SID, NID, SSID, etc.

Abstract: A data synchronizer that receives an input stream of asynchronous digital data in packets, and provides an output stream of synchronous data in packets. The synchronizer includes a first memory unit and a second memory unit, each having a data input, a data output, a write clock input and a read clock input. A first switch is provided for switching connection of the input in alternating manner between the first memory unit input and the second memory unit input, and a second switch is provided for switching connection of the data synchronizer output in alternating manner between the first memory unit output and the second memory unit output. A write clock is provided to write clock inputs of the first and second memory units.

Abstract: In a network including at least two transmission paths whose bands are respectively managed, an RTT test of DTCP-IP may fail due to a relay wait time generated by the band management regardless of retrials. An objective of the present invention is to assure success of the RTT test. A master unit device manages bands of the transmission paths and includes an RTT test detection section detecting a failure of the RTT test, and a band management section modifying a band management (TXOP allocation) schedule based on an RTT test failure detection. With this configuration, a time band during which no TXOP is allocated is provided between the transmission paths whose bands are respectively managed, thereby assuring success of the RTT test.

Abstract: Telecommunication system based on IP technology, comprising a primary media gateway (1), at least one secondary media gateway (2, 3) to be synchronized onto the primary media gateway (1), and several radio base stations (4-10), at each secondary media gateway (2, 3), at least one radio base station (5, 9) connected to it being provided with a device with which the radio base station (5, 9) can be synchronized onto the emission of another radio base station (4, 8) in order to regenerate the system clock and to transmit it to the connected secondary media gateway (2, 3), and each secondary media gateway (2, 3) being provided with at least one connection for a radio base station (5, 9), through which the regenerated clock can be received and used for controlling the internal clock of the secondary media gateway (2, 3).

Abstract: A transmitting method has steps of modulating carrier waves having frequencies set at ½N?n (n?N; n is a positive integer) of a reference frequency with transmission signals to produce modulated signals, multiplexing the modulated signals by frequency division multiplexing to produce an input signal, and transmitting the input signal to a synchronous detector in which the transmission signals are extracted from the input signal by calculating a moving average of the input signal every sampling period of time corresponding to the reference frequency and performing an addition and subtraction calculation corresponding to the cycle of each carrier wave for the moving averages. The frequency of each carrier wave, modulated with one transmission signal having a first signal level, is equal to or lower than the frequency of any carrier wave modulated with another transmission signal having a second signal level higher than the first signal level.

Abstract: Methods and systems are provided for in-band signaling of at least two simultaneous digital media streams in a network, the two simultaneous streams being a part of a media session. Each of the at least two simultaneous streams is generated from a corresponding source. The generated simultaneous streams are synchronized by using a unique marker packet. Each synchronized stream is transmitted to a destination corresponding to each source.

Abstract: An apparatus includes a difference extraction unit to extract a difference between a second time stamp value, which is obtained by adjusting a first time stamp value that is measured at a time of arrival of a synchronization message transmitted by the master at a Layer 3 to be synchronized in frequency with a clock of the master, and a third time stamp value, which is measured at a time of departure of the synchronization message from the master; a minimum filter to select a minimum from one or more difference values extracted by the difference extraction unit; and a delay variation calculation unit to estimate a time of arrival of a current synchronization message at the Layer 3 based on the selected minimum and calculate a delay variation.

Abstract: Aspects of a system for an ad hoc wireless network with master control of network parameters may include one or more circuits that enable generation of a beacon frame at a supervisory WLAN station wherein the generated beacon frame contains a supervisory role indication. The supervisory role indication enables the supervisory WLAN station to establish timing synchronization and network parameters that are utilized by a plurality of WLAN stations utilized for communicating within a wireless network. Aspects of the system may also include a WLAN station that enables communication via a wireless local area network by utilizing a timestamp value and network parameter values retrieved from a received beacon frame based on the presence of a supervisory role indication within the received beacon frame.

Abstract: A technique for synchronizing different network access modules in a mobile communication device is provided. A device embodiment (100) comprises a first network access module (102) having a first radio technology, or RAT, interface (114) and being clocked at a first clock frequency and a second network access module (104) having a second RAT interface (130) and being clocked at a second clock frequency, wherein the first clock frequency is different from the second clock frequency. A method implementation of this technique comprises the steps of generating a clock signal having the first clock frequency, outputting the clock signal for use as a first reference clock signal in the first network access module (102), converting the clock signal to the second clock frequency, and outputting the converted clock signal for is use a second reference clock signal in the second network access module (104).

Abstract: Synchronization of two or more items can be optimized through the use of parallel execution of synchronization tasks and adaptable processing that monitors and adjusts for system loading. Two or more synchronization tasks required to be performed for an item can, if not inherently serial in nature, be performed in parallel, optimizing synchronization of the item. Even if multiple synchronization tasks required for one item must be serially executed, e.g., download the item prior to translating the item, these synchronization tasks can be executed in parallel for different items, optimizing a download request involving two or more items. Moreover, multiple threads for one or more synchronization tasks can be concurrently executed when supportable by the current operating system resources. Rules can be established to ensure synchronization activity is not degraded by the overextension of system resources.