Abstract: A method, system, and computer program product for ordering grants of upstream bandwidth in a two-way grant-based communication system, such as a DOCSIS-based communication system. Typically, a central controller, such as a CMTS, sends a grant message to a set of end user devices, e.g., cable modems, wherein the message defines when each end user device can transmit upstream. The invention first determines, for each end user device, the time needed for processing the grant message. The central controller then constructs the grant message, such that grants for the end user devices associated with the shortest grant message processing times occur early in the grant message and represent the earliest grants. Grants for end user devices associated with the longest grant message processing times occur later in the grant message and represent later grants.

Abstract: A system includes a universal transceiver and a switch coupled to the universal transceiver, wherein the switch is configured to selectively couple a terminal of the universal transceiver to one of a plurality of different physical media. The universal transceiver is configured to generate a global schedule based on at least one input received by the universal transceiver, wherein the global schedule controls the switch.

Abstract: A relay apparatus of performing packet communication of time division, including: a receiver configured to receive a first data packet to be transmitted pursuant to a reservation of a time slot, a second data packet, and a control packet including first data representing which of the first data packet and the second data packet is to be transmitted in the same time slot; a processor configured to, in a case where the control packet including first data representing that the second data packet is to be transmitted in the same time slot, store in a data storage the second data packet; and a transmitter configured to transmit the second data packet stored in the data storage in a time slot not including other data packet than the second data packet.

Abstract: Systems and methods for point-to-multipoint communications with CAS are provided. In one embodiment, a method for providing CAS for a point-to-multipoint communication network comprises: providing a network having a first network interface adapted to communicate with a first fractional network interface and a second fractional network interface; mapping a first set of user-data timeslots of the first network interface to timeslots of the first fractional network interface and mapping a second set of user-data timeslots of the first network interface to timeslots of the second fractional network interface, the first set including a first N user-data timeslots and the second set including a next M user-data timeslots; mapping a first set of signaling bits associated with the first set of user-data timeslots with the first fractional network interface; and mapping a second set of signaling bits associated with the second set of user-data timeslots with the second fractional network interface.

Abstract: The invention relates to a method for implementing an RFID network, comprising the following steps: each read-write station transmits at least one test signal; each read-write station (1, 2, 3, 11, N0-N17) receives the (receivable) test signals of neighboring read-write stations (1, 2, 3, 11, N0-N17), said signals comprising a station address, a frequency channel number and a measured signal intensity of each receivable neighboring read-write station (1, 2, 3, 11, N0-N17); a network structure (110) comprising structure data and a co-ordination plan comprising co-ordination data are calculated using a number of time slots (21, 31, 41) and a number of frequency channels (20, 30, 40), a service frequency channel (reader service channel, RSK) and/or a service time slot (reader service time, RST) being defined and used by the read-write stations (1, 2, 3, 11, N0-N17) for service purposes; and at least corresponding structure data and co-ordination data for an organized, synchronous network operation is transmitted

Abstract: A wireline communications circuit using transceivers compatible with a wireless communications protocol is disclosed using access points and stations in an adaptive Time Division Multiple Access scheme for a multi-channel medium with colocated transceivers. Methods of operating an access point and a station, their implementations as chips and the implementation of a chip for either the access point or station are further disclosed.

Abstract: A communication system distributes, in the time domain, acknowledgment transmissions by a group of access terminals sharing a same time domain resource. A position of one or more access terminals in the group of access terminals is determined and each of the one or more access terminals then sends an acknowledgment transmission, such as an acknowledgment or negative acknowledgement, in a time slot that is N time slots after the shared time domain resource, where N is a function of the position of the access terminal in the group of access terminals.

Abstract: A method for generating a superframe structure by using a beacon scheduling within a wireless sensor network and transmitting data based on the generated superframe structure includes: defining, by each of a plurality of data transceivers in the network, a relation with data transceivers located in their vicinity; assigning a data transceiver for beacon transmission/reception to each slot of a superframe in consideration of the defined relation; generating a superframe structure including a Beacon Only Period (BOP) and a data frame transmission period, in consideration of assigned slots; and broadcasting beacons and data frames in consideration of the superframe structure.

Abstract: The present invention can reliably adjust the lip-sync between an video and audio at a decoder side, without making the viewer feel strangeness. In this invention, the encoded video frames to which video time-stamps VTS are attached and the encoded audio frames to which audio time-stamps ATS are attached, all received, are decoded, generating a plurality of video frames VF1 and a plurality of audio frames AF1. The video frames VF1 and audio frames AF1 are accumulated. Renderers 37 and 77 calculate the time difference resulting from a gap between the reference clock for the encoder side and the system time clock stc for the decoder side. In accordance with the time difference, the timing of outputting the plurality of video frames, one by one, on the basis of a timing of outputting the plurality of audio frames, one by one. Hence, the lip-sync can be achieved, while maintaining the continuity of the audio.

Abstract: An integrated system concurrently connects voice and data communications devices used by small and medium sized businesses to a network T1 data line terminating at the customer premises. A system chassis includes multiple slots and backplane connectors for removably receiving a bank controller unit (BCU), power service unit (PSU), and one or more different types of smart and dumb voice and data access modules that provide the functional interface to the customer premises equipment. The BCU controls the operation of the system, which can be configured by the customer through an external terminal interface.

Abstract: A system for managing voice and data communications coupled to a wide area telecommunications network. Video data is coupled between the system and a video unit under control of a processor. Audio data is coupled between the system and a microphone unit under control of the processor. The audio data are coupled to a TDM bus in the system operating under control of the processor. The video and audio data are coupled to a digital transmission link of the wide area telecommunications network. A user participates in a video call with the video data, while concurrently the user participates in a telephone call with the audio data. Voice communications of the telephone call that stay in a circuit-switched form are provided via the TDM bus. The video call and the telephone call provide a conference call.

Abstract: A wireless user equipment device transmits a control channel and a data channel. Each of the control channel and the data channel include a plurality of time slots. The control channel is configured to transmit control information and includes both transmission time slots and non-transmission time slots. The data channel is configured to transmit data packets. The device further includes a processor configured to schedule at least one data packet for transmission in at least one data channel time slot that is concurrent to at least one control channel transmission time slot, and a transmission module configured to transmit the at least one data packet in the at least one data channel time slot that is concurrent to the at least one control channel transmission time slot.

Abstract: Systems and methods for dynamic allocation of network bandwidth. In some examples, a guaranteed interval period, including a guaranteed interval start time and guaranteed interval end time, can be identified based upon policy. Network stations can then identify first interval start times and first interval end times different than the guaranteed start times and guaranteed end time provided by policy. An access network can thereby provide a first interval start time and a first interval end time to stations within the access network. An in-home network can determine an in-home interval period based upon the first interval start time and first interval end time.

Abstract: Apparatuses and methodologies are described that coordinate multiple wireless communication protocols within a mobile device. A single mobile device can contain multiple communication components (e.g., a Bluetooth component, an IEEE 802.11b/g component). To prevent interference and possible loss of data, one communication component may be prevented from transmitting or receiving data packets while the other communication component is either transmitting or receiving. The components may be coordinated by a central controller located in the mobile device. Alternatively, the communication components may exchange messages to determine transmission or reception priority. In addition, one communication component may monitor the status of the other communication component to determine unused communication slots.

Abstract: Apparatus for flexible sharing of bandwidth in switches with input buffering by dividing time into a plurality of frames of time slots, wherein each frame has a specified integer value of time slots. The apparatus includes modules where inputs sequentially select available outputs to which the inputs send packets in specified future time slots. The selection of outputs by the inputs is done using a pipeline technique and a schedule is calculated within multiple time slots.

Abstract: The present invention is directed to a method of delivering a video stream. The method operates by determining a group of video streams to be provided to a particular destination over a particular communication link. Next, the band width of the link is allocated to the video streams based upon the particular properties of the various video streams to be transmitted. The video streams are processed so that they fit into the band width allocations. Next, the video streams are transmitted in separate channels, synchronized with respect to each other, to reach the subject destination.

Abstract: Methods are provided for transforming a declarative description of a processor of the packets of a communication protocol. A first declarative description of the packet processor is input. The first declarative description includes rules that include actions for manipulating the fields of the packets. Each rule includes one or more of the actions, and at least one of the rules includes multiple actions and a guard condition for enabling and disabling some of these actions. The first declarative description is transformed into a second declarative description of the packet processor. The second declarative description includes rules for manipulating the fields of the packets, and each rule corresponds to an action of a rule of the first declarative description. In addition, each individual action of each rule of the first declarative description corresponds to a rule of second declarative description that includes the individual action. The second declarative description is output.

Abstract: A data processing system according to the invention comprising a group of at least a first and a second module, wherein each module has a data processing facility, a clock for timing data transmissions from the module to another module, a time-slot counter for counting a number of time slots which are available for transmission of data. The modules have a first operational state wherein the counted number of time slots is less than or equal to a predetermined number, in which operational state data transmission is enabled, and a second operational state wherein the number is in excess of the predetermined number, in which second operational state data transmission is disabled, Each module has a notifying facility for notifying when it is in the second operational state.

Abstract: A method implemented on a network node includes receiving an adjustable schedule of transmission start slots, where the transmission start slots represent transmission initiation opportunities for the initiation of data transmission by at least one of a plurality of network devices on a network, and transmitting a current position of the node within all groups of the schedule suitable for full resynchronization to the adjustable schedule by at least one other the network node.

Abstract: The present invention is a system (1200), base station (1100)/customer premise equipment (1150) apparatus, and method (400 450) for a two-stage quiet-period management mechanism that provides the required protection to incumbents (primary spectrum users) while supporting the desired QoS of secondary users participating in a cognitive radio network. In the first stage, a simple fast sensing (301) is done (e.g., energy detection) by all devices in the network. Depending on the result of the fast sensing, the second and possibly longer stage, herein termed fine sensing (302), is performed.

Abstract: In many aspects, the invention relates to systems and methods for synchronizing a communication network, particularly a slotted communication network, having a plurality of nodes. In slotted communication networks, the nodes are configured to transmit or receive data during selected time slots. During a selected time slot, each node transmits a synchronization message that is received by a neighboring node. The neighboring node adjusts its time slot boundary to coincide with the time of receipt of the synchronization message, thereby synchronizing each node with a neighboring node. Such systems and methods are energy efficient, accurate, fast, fault tolerant and easy to implement.

Abstract: Methods and apparatus are presented for conducting communications using a shared communication medium. A message is sent over the shared communication medium. The shared communication medium is organized to include an allocation of node identification signal space and an allocation of data transmission signal space. The allocation of node identification signal space includes a plurality of node identification segments. The allocation of data transmission signal space includes a data transmission segment. The message includes a node identification portion and a data transmission portion. The node identification portion is transmitted in the allocation of node identification signal space and occupies a node identification segment. The data transmission portion is transmitted in the allocation of node identification signal space and occupies the data transmission segment.

Abstract: A system and method for increasing bandwidth usage between an access point and a wireless device are described. One embodiment can include an access point, a prioritizer, and a priority storage device. These components can increase bandwidth usage between an access point and a wireless device by allocating previously unused transmission slots.

Abstract: A method and apparatus for removing interference from a UpLink (UL) signal in a Time Division Duplex (TDD) system are provided. The method includes determining whether a section for receiving an UpLink (UL) signal from the MS overlaps with sections for sending a DownLink (DL) signal of neighbor BSs in service, the neighbor BSs sending the DL signal to another MS, when the UL signal section overlaps with the DL sections of the neighbor BSs, detecting DL transmit signal information from the neighbor BSs transmitting in the overlapping sections, and removing interference from the UL signal using the detected transmit signal information. Accordingly, the accuracy of detecting the signal from the MS can be raised without having to adopt the complex resource allocation scheme to avoid the interference of the neighbor BSs.

Abstract: In communication method for communicating via a transmission channel to which first communication apparatuses communicating based on a first communication system, second communication apparatuses communicating based on a second communication system, and third communication apparatuses communicating based on a third communication system are connected, a data transmission domain and a notification domain for notifying a data transmission within the data transmission domain are allocated to the first communication apparatuses, the second communication apparatuses, and the third communication apparatuses, respectively. In the communication method, notices of the data transmission for each of the first communication apparatuses, the second communication apparatuses and the third communication apparatuses are transmitted within the notification domain, and the data transmission domain is reallocated in accordance with the notices transmitted from the first, second and third communication apparatuses.

Abstract: Aspects of the present invention relate to methods and systems for managing and allocating bandwidth in a communication medium. Some aspects relate to the determination of bit usage patterns for use in allocating bandwidth. Some aspects relate to the further determination of a derived usage pattern from the bit usage patterns and allocation of tone-slots within the derived usage pattern.

Abstract: Embodiments of a wireless access network and method for allocation time and frequency resources are generally described herein. Other embodiments may be described and claimed. In some embodiments, a base station allocates contiguous groups of data subcarriers of a downlink subframe to closed-loop user stations, and allocates the remaining data subcarriers of the downlink subframe to open-loop user stations to increase frequency diversity.

Abstract: Provided are a method, system, and computer program product for using gathered system activity statistics to determine when to schedule a procedure. Activity information is gathered in a computer readable storage medium indicating activity in a computer system during time slots for recurring time periods, wherein each time period includes a plurality of time slots. A high activity value is determined comprising an activity amount of a slot having a maximum amount of activity among the slots for the time periods and a low activity value is determined comprising an activity amount of a slot having a minimum amount of activity among the slots for the time periods. A threshold point is determined as a function of the high activity, the low activity, and a threshold percent comprising a percentage value. A determination is made as to whether there is at least one lull window having a plurality of consecutive time slots each having an activity value lower than the threshold point.

Abstract: Methods and systems for providing data communication in medical systems are disclosed.

Abstract: Data communication sub-slots of a cycle in a time division mode are allocated to communication apparatuses; a maintenance communication sub-slot is allocated to the communication apparatus operating as a master communication apparatus; the communication apparatuses perform data communication with the use of the data communication sub-slots allocated thereto; and the communication apparatus uses the maintenance communication sub-slot to change or monitor information about the communication of the communication apparatuses in the time division mode.

Abstract: A communication apparatus, wherein the communication apparatus selects a superframe from W consecutive superframes, and starts each of the W consecutive superframes without transmitting a beacon in a first time period of each of the W consecutive superframes when a superframe to be started is different from the selected superframe.

Abstract: The method and apparatus described herein controls transmission from a plurality of user terminals to an access point on a random access channel in a wireless communication system. An access point determines an allowed information rate for each user terminal and transmits a rate control parameter indicative of the allowed information rates to the user terminals. The access point also computes a packet transmission probability and transmits the packet transmission probability to the use terminals on a common control channel. The packet transmission probability controls the number of user terminals that transmit in a given time slot to reduce collisions and increase the departure rate. The user terminals selectively transmit one or more packets to the access point in a time slot on the random access channel based on the allowed information rate and the packet transmission probability.

Abstract: Techniques are described that can be used to permit coexistence of different radios. Preambles of frames from a first radio are detected. If the preambles occur within a prescribed period of one another, then a frame synchronization signal is transmitted. Based on the timing of the frame synchronization signal, a second radio adjusts the timing of transmit and receive time slots.

Abstract: Systems and methods are disclosed for a managed access network device that generates and transmits a schedule map for requesting bandwidth to a plurality of network devices. The managed access network device then broadcasts a request time where the request time is broken down into a plurality of periods. When a network device generates a packet having a priority, the schedule map is then consulted to determine one of a plurality of periods in which to transmit the request for bandwidth, where each period corresponds with at least one priority. The network device then subsequently transmits the request for bandwidth during the determined period within the request time.

Abstract: In a system where mobile stations use one frequency to transmit/receive and share position information data, synchronization has been made in a shared time resulting from GPS and the mobile stations transmit the data at mutually different timings that are predetermined, whereby overlapping of the transmissions is avoided. However, the transmission period of a station cannot be changed even if that station wants to change its transmission period. Transmission period determining units are disposed which determine transmission periods on the basis of the moving speeds of mobile stations. The mobile stations are time-synchronized by GPS. After the time synchronization, fundamental transmission periods comprising plural time slots are disposed. Transmission is done just in one time slot within one fundamental transmission period normally, and the number of transmissions is increased to two times or three times within one fundamental transmission period when the period is to be shortened.

Abstract: Allocating radio resources in a mobile communication system, comprises transmitting first information to a network, wherein the first information is utilized by the network to allocate radio resources to a mobile terminal for allowing communication between the mobile terminal and the network, and receiving second information from the network, wherein the second information is related to an allocation of radio resources for the mobile terminal.

Abstract: A mechanism is provided for packet coalescing in virtual channels of a data processing system. A first processor bundles original data into a data packet to be transmitted to a destination processor, the original data comprising payload data and overhead data. The first processor transmits the data packet to a second processor along a path to the destination processor. The second processor determines if the second processor has additional payload data destined for the same destination processor. Responsive to the second processor having the additional payload data, the second processor unbundles the data packet, adds the additional payload data to the payload data, and rebundles the payload data along with the additional payload data and the overhead data into a rebundled data packet. Then the second processor transmits the rebundled data packet to at least one other processor along the path to the destination processor.

Abstract: A communication system, a communication apparatus and a terminal accommodation apparatus which use a metallic subscriber line and are a high-speed and inexpensive are provided. The communication system includes a plurality of terminal accommodation apparatuses 200 for accommodating terminals 3c, 3d, a communication apparatus 1 connected to an IP network 4, and digital subscriber lines L3 for connecting the plurality of terminal accommodation apparatuses 200 and the communication apparatus 1. The terminal accommodation apparatus 200 includes a PCM (pulse code modulation) modulator and a subscriber line interface. The PCM modulator converts a voice signal received from the terminal 3c to PCM data. The subscriber line interface transmits data including the PCM data to the communication apparatus 1 via the metallic subscriber line L3. The communication apparatus 1 includes an IP converter 130 for converting the PCM data to an IP (Internet protocol) packet.

Abstract: Systems and methodologies are described that facilitate implementing a linear adaptive equalizer receiver on the downlink link of a UMTS TDD wireless communication system. A reference signal can be generated based on multiple non-common midamble sequences in a time slot of a received transmission. Traffic-to-pilot ratios for channel codes in the time slot can be generated, and relative strengths of channel codes associated with specific midambles can be determined to weight the midamble. A plurality of the weighted midambles can then be utilized to generate a reference signal to train the equalizer, which can facilitate utilization of total aggregate midamble energy rather than midamble energy associated with a single midamble in the signal.

Abstract: The present invention discloses a method and an apparatus for coexistence of multiple operating entity systems, where the method includes: setting part or all of bandwidths of an operating entity in uplink timeslots of a downlink carrier frequency interference region to be in an idle state. By using the present invention, the uplink timeslots of the operating entity in the downlink carrier frequency interference region are set to be in an idle state and do not transmit an uplink transmit signal any longer, which prevents a downlink transmit signal of another operating entity from interfering with an uplink transmit signal of the operating entity.

Abstract: The present invention concerns a method for determining if a handover of a first half-duplex terminal has to be executed from a first to a second base station. The first base station: transfers signal in the cell of the first base station, receiving a message transferred by the first half-duplex terminal in response to the signal transferred by the first base station, the message comprising information relative to quality measurements on the signals transferred by the first and second base stations, receiving a message indicating if the idle period of the cell of the second base station is compatible with the round trip delay of the first half-duplex terminal in the cell of the second base station, determining if a handover of the first half-duplex terminal has to be executed according to the compatibility.

Abstract: A multi-node communications system is provided with communications protocol using both static (11, 12, 13, 18) (pre-determined) and dynamic (51, 52, 53 . . . ) (run-time determined) consecutive communication slots is used. The system has a number of distributed communication nodes, each node being arranged for communicating frames of data with the other nodes during both the static (11, 12, 13 . . . ) and the dynamic (51, 52, 53 . . . ) communication slots. Each node includes a synchronized time base 5 made up of consecutive timeslots (11, 12, 13 . . . , 51, 52, 53 . . . ). The timebase 5 has substantially the same error tolerance in each node. For static communication (10), a predetermined number of timeslots (20) are utilized for each static communication slot. For dynamic communication a dynamically allocated number of timeslots (60) are utilized for each dynamic communication slot. In this way both static and dynamic media arbitration is provided within a periodically recurring communication pattern.

Abstract: A sampling rate allocation method for a wireless sensor network is provided. In this method, a distributed computing method is adopted to allow each node to calculate and obtain its decision table and energy table and upload its energy table to its parent node, and finally, the number of samples to be provided by all the child nodes is determined according to the decision table of the root node and a total sample number. Compared to the conventional techniques, the present invention provides a wireless sensor network which has longer life time and can meet the requirements to both the total number of samples and the fairness.

Abstract: To minimize overhead in the allocation of channels, forward and reverse link time slots are automatically assigned in pairs. In particular, rather than requiring a separate process for allocating reverse link channels for the sending of acknowledgment messages in response to receipt of a forward link packet, a different scenario takes place. At the receiving end, such as for valid reception of data on a forward link channel at a central base station site, a reverse link time slot is automatically allocated in a time slot which depends upon the time slot allocation on the forward link. This assists with the rapid return of acknowledgment messages in a reverse link direction which is the predominant direction for such messages in a wireless system wherein most data traffic is Web page oriented.

Abstract: A system and method for enhanced physical layer device interface capability for backward support of fast retrain. The enhanced physical layer device is configurable in its leveraging of an identified legacy signaling mechanism. The identified legacy signaling mechanism can be used by the enhanced physical layer device to suspend transmission by the media access control device to facilitate the fast retrain.

Abstract: Methods and systems for dynamically changing poll timing based on Bluetooth activity are disclosed. Aspects of one method may include determining synchronous Bluetooth activity between a Bluetooth master device and at least one Bluetooth slave device. The synchronous Bluetooth activity may comprise, for example, transmission of packets by the Bluetooth master device via a SCO link and/or a eSCO link. The Bluetooth master device may dynamically adjust a polling period based on the synchronous Bluetooth activity. For example, the polling period may be less when there is synchronous activity than when there is no synchronous activity. The polling periods for when there is synchronous activity and when there is no synchronous activity may be default values. The default polling periods may be changed to different values, for example, by the user.

Abstract: Provided are a multi-pilot generation method and a detection method in a multi-antenna communication system. In the method, a transmission side superimposes a first preamble sequence and a third preamble sequence to generate a second preamble sequence, which is subjected to serial/parallel conversion before the first preamble sequence and the second preamble sequence are successively transmitted from a plurality of antennas by time division. A reception side receives the first preamble sequence and the second preamble sequence by a plurality of antennas, separates the third preamble sequence from the second preamble sequence by a spatial division process, and performs a pilot correlation process by using the first preamble sequence and the separated third preamble sequence.

Abstract: A method and system for adding a node into a network operating in a cyclic state after one or more nodes have been previously removed without interrupting the synchronous traffic of the remaining nodes on the network is provided. The method includes discovering an added node by sending data to the added node in a downstream timeslot previously assigned to a removed node, the data having a delay value for scheduling a response from the added node to coincide with an upstream timeslot previously assigned to the removed node, thereby avoiding collisions with the synchronous traffic on the network; receiving the response from the added node; configuring the added node in accordance with an original configuration of the removed node; and commencing cyclic operation of the added node.

Abstract: In an example embodiment, a method for speculative power saving. The beginning portion of a header (e.g. a physical layer convergence protocol “PLCP” header of a beacon) is processed to determine whether a predefined bit is set that indicates whether the frame contains any delivery traffic indication for buffered multicast and/or unicast frames. If the bit is set, indicating the frame contains no delivery traffic indication of buffered frames, receiving and processing of the frame stops (e.g. the remainder of the PPDU is not processed) and the receiver switches to a power save state. In an example embodiment, if a predefined NULL beacon frame is detected, receiving and processing of the frame (and PPDU) stops and the receiver switches to a power save state.

Abstract: A pulse generator which, by generating a carrier wave having a certain frequency over a predetermined unit duration time, generates a modulated pulse signal, having a pulse width regulated by the unit duration time, which bears information contained in a baseband signal, includes: a pulse width adjustment section which adjusts the pulse width by adjusting the unit duration time of the modulated pulse signal in accordance with a supplied pulse width control signal.