Abstract: Systems and methods for scheduling wireless communications of a base station with multiple user mobile stations involve grouping the user mobile stations in clusters based on a predetermined criterion, such as a Quality of Service (QOS) profile of a user mobile station. Each cluster is assigned with a cluster weight factor that defines a priority level of the cluster. For each user mobile station in each cluster, a priority index may be determined based on the cluster weight factor of a respective cluster, and throughput and fairness factors respectively selected to maximize throughput and provide fairness to user mobile stations. The user mobile stations may be served in an order based on their priority indexes.

Abstract: A method and computer-readable medium for dynamically adjusting a multimedia data resolution in a wireless environment is provided. The method includes: determining the access profile of the mobile station; monitoring transmission conditions in the wireless system; transmitting the multimedia data and control signaling to the mobile station with a highest resolution based upon the transmission conditions, wherein the control signaling determines an amount of the multimedia data accessible to the mobile station based upon the access profile of the mobile station; and decreasing a resolution of the multimedia data being transmitted to the mobile station, if the transmission conditions become unacceptable for transmitting the multimedia data at the highest resolution.

Abstract: A relay device has a plurality of input/output modules each having input/output ports, each input/output module including throughput measuring means for measuring throughput of communication packets received from other input/output modules, and throughput limiting means for limiting throughput of communication packets to be transferred to the other input/output modules on the basis of the throughput measured by the throughput measuring means, wherein the relay device transfers communication packets between the input/output modules to relay the communication packets.

Abstract: A method for communications between neighboring wireless cells such as wireless regional area networks operating according to IEEE 802.22 specifications. The method involves scheduling inter-base station communications for over-the-air connections to allow neighboring base stations to communicate in environments where a single available channel is shared between the neighboring cells or where two or more channels used by two or more neighboring cells. In some embodiments, a bridge system, such as a bridge consumer premise equipment (CPE), positioned in an area of coverage overlap between two cells is used for inter-base station communications, and allocation and scheduling of bandwidth on the utilized channels is performed to provide interference free communications between the base stations. Existence announcements are provided in coexistence time slots and requests for bandwidth such as reserved and additional time slots are transmitted between the base stations using the coexistence time slots.

Abstract: A bandwidth management card includes a switch control unit and multiple ports connected to one or more line cards that are separate from the bandwidth management card. The bandwidth management card further includes at least one switch, and multiple network ports, where each of the multiple network ports is connected to a respective link to at least one external network. A first switch of the at least one switch receives instructions from the switch control unit, switches a first subset of the multiple network ports through to a first port of the multiple ports based on the received instructions, and switches a second subset of the multiple network ports through to a second port of the multiple ports based on the received first instructions.

Abstract: A method for determining Quality of Service (QoS) level is provided. The method includes: assigning, by a Coaxial-cable Line Terminal (CLT), a QoS level for a user terminal; sending, by the CLT, relevant information of the assigned QoS level to a Coaxial-cable Network Unit (CNU); and determining, by the CNU, a QoS level for a packet sent by the user terminal according to the relevant information of the assigned QoS level. A system for determining QoS level is provided. The system includes: a CLT and a CNU. A CLT and a CNU are also provided. The solution enables a coaxial-cable network unit to satisfy the QoS requirements of user terminals, and reduces the producing cost of the coaxial-cable network unit.

Abstract: Methods and systems for efficient allocation of resources between child nodes of a parent node in a hierarchical system. The parent node has a limited number of resources available in a resource allocation phrase. The limited number of resources are allocated according to requests from the child nodes in the resource allocation phase. It is determined whether at least one of the child nodes has a request not met by the allocated resources. A bookmark associated with the child node is set for the additional required resources. Additional resources are allocated to the child node according to the bookmark in a subsequent resource allocation phase.

Abstract: A bus controller includes: a data receiving section for receiving output status information from other bus controllers on transmission routes available; a route load detecting section for calculating uniformity of distribution index indicating the degree of non-uniformity in transmission flow rate between the routes based on the output status information; a routing section for determining transmission routes, of which the transmission flow rates have been adjusted by reference to the index; a packet assembling section for generating a packet; a data output section for outputting the packet through one of output ports; a header analyzing section for determining which output port is connected to a transmission route chosen by reference to information about the packet receiving end; and a data output section for outputting the packet through the output port.

Abstract: In an example embodiment described herein, there is disclosed an implementation for analyzing a network having cache advance (CA) segments, such as a session control protocol (SCTP) pipe. The path between endpoints, e.g. a client on a first local area network (LAN) and a server on a second LAN, wherein the first and second LAN are coupled by an SCTP pipe, is determined and properties of the path are acquired.

Abstract: A system, method, and computer readable medium for strict priority weighted round robin scheduling includes selecting a set of bandwidth allocation table filled entries having a common destination address, each filled entry associated with a received data packet and determining a scheduling weight for each bandwidth allocation table entry in the selected set, the scheduling weight determined first by a priority and then by an assigned weight.

Abstract: When a communication apparatus (server device) that includes wireless access means and can send content data by using the wireless access means starts sending content data, it calculates a communication band that remains available for the server device to perform communication, so that any content that has a rate equal to or greater than the remaining communication band may not be publicized open to and may not hence be sent to a client device.

Abstract: A communications system having an ATM transmission line and an IP transmission line is disclosed that includes a base station capable of communicating with a mobile terminal through a radio link; and a radio network controller capable of communicating with the base station through the ATM or IP transmission line. The radio network controller includes a division part dividing transmission data into signals of a predetermined data size; a transmission part transmitting the divided signals to the base station at predetermined time intervals; a retransmission part retransmitting the signals transmitted to the base station when a response signal from the mobile terminal is not received within a predetermined period; a measuring part measuring a signal response period in a communications channel between the radio network controller and the mobile terminal through the base station; and a determination part determining the predetermined data size based on the measured response period.

Abstract: Disclosed is a method and apparatus for allocating a bandwidth in a communication system. The method includes the steps of checking the number of mobile stations that fall within a cell under the control of an relay station and have data to be transmitted to a base station, determining a bandwidth allocation period for data transmission corresponding to the checked number of mobile stations, and transmitting a bandwidth allocation message at intervals of the determined bandwidth allocation period.

Abstract: Examples are disclosed for forwarding data partitioned into one or more cells through at least a portion of a three-stage memory-memory-memory (MMM) input-queued Clos-network (IQC) packet switch. In some examples, each module of the three-stage MMM IQC packet switch includes a virtual queue and a manager that are configured in cooperation with one another to forward cells through at least a portion of the switch. The cells may have been partitioned and stored at an input port for the switch and destined for an output port for the switch.

Abstract: A method, apparatus, and system for controlling multicast bearer resources are disclosed, which employ a resource and admission control subsystem (RACS) to control the multicast bearer resources. The method includes: a network entity in a RACS receives a request for controlling multicast bearer resources from a bearer-layer network entity and controls the multicast bearer resources. The network entity in the RACS includes: a receiving unit adapted to receive a request for controlling multicast bearer resources from a bearer-layer network entity and a control unit adapted to control the multicast bearer resources.

Abstract: Novel satellite communications systems, methods, and related devices are described. In one set of embodiments, available frequency channels may be dynamically assigned to particular beams of a multi-beam satellite system. The frequency assignment may be based on the amount of frequency allocated to particular beams of the multi-beam satellite system, utilizing a novel frequency selection method employing frequency reuse constraints. There may be a number of distinct frequency channels that are each assigned to one or more different beams. Such a system may be made up of a satellite in communication with terminals (e.g., user terminals or gateways). The satellite may receive and compile bandwidth request data from the terminals, and use this information in frequency assignment.

Abstract: A proactive adaptive radio methodology for the opportunistic allocation of radio spectrum is described. The methods can be used to allocate radio spectrum resources by employing machine learning to learn models, via accruing data over time, that have the ability to predict the context-sensitive durations of the availability of channels. The predictive models are combined with decision-theoretic cost-benefit analyses to minimize disruptions of service or quality that can be associated with reactive allocation policies. Rather than reacting to losses of channel, the proactive policies seek switches in advance of the loss of a channel.

Abstract: Described embodiments provide a first-in, first-out (FIFO) buffer for packet switching in a crossbar switch with a speedup factor of m. The FIFO buffer comprises a plurality of registers configured to receive N-bit portions of data in packets and a plurality of one-port memories, each having width W segmented into S portions a width W/S. A first logic module is coupled to the registers and the one-port memories and receives the N-bit portions of data in and the outputs of the registers. A second logic module coupled to the one-port memories constructs data out read from the one-port memories. In a sequence of clock cycles, the N-bit data portions are alternately transferred from the first logic module to a segment of the one-port memories, and, for each clock cycle, the second logic module constructs the data out packet with output width based on the speedup factor of m.

Abstract: An apparatus and method for verifying route and bandwidth settings of multiple services provided over networks. The apparatus has an extractor and a verifier. Based on input data describing services each having primary and secondary routes between specific locations, an available bandwidth of each network, and a guaranteed bandwidth of each service, the extractor selects a first network to be verified and extracts first services that use the first network as their respective primary routes. The extractor then selects at least one second network from among the networks that the first services specify as their respective secondary routes. The extractor extracts second services that use the second network as their primary routes and specify the first network as their secondary routes. The verifier sums up guaranteed bandwidths that the first and second services should provide, and determines whether the sum is smaller than an available bandwidth of the first network.

Abstract: A step-wise approach to automatically determining the bandwidth of a communication channel includes dividing the channel's potential bandwidth into a number of ranges. An initial range is then selected and a series of data packets specific to the selected range are transmitted from a first endpoint to a second endpoint, with the second endpoint determining one or more channel metrics based on the transmitted packets (e.g., measured transmission rates). If the metrics indicate the current range accurately reflects the channel's bandwidth, a measured transmission rate of the transmitted data packets is used as the channel's bandwidth. Otherwise, another range is selected and the process is repeated. The described approach rapidly determines channel bandwidth, even when the channel between the two endpoints is asymmetric. Techniques described herein are particularly beneficial when used in conjunction with multimedia conferencing applications.

Abstract: A serial ATA interface calibrates serially connected components of a computer system linked by the interface to a negotiated data transmission speed. The interface negotiates the fastest data transmission speed supported by the serially connected components. Link parameters associated with the negotiated data transmission speed are calibrated and implemented in a Phy layer of the interface before data is transmitted across the interface. The calibrated link parameters include signal transmission settings for amplitude, pre-emphasis, equalization and timing. Default settings of the link parameters correspond to the slowest data transmission speed supported by the serially connected components. The serially connected components are calibrated each time system power is initialized. The serially connected components can be a host computer linked to a data storage device such as a backplane-based storage subsystem.

Abstract: The invention relates to a method, a bandwidth broker and an edge node for providing a predefined quality of service between two communication partners, wherein the quality of service is provided by means of a plurality of connections and a decentralised admission control.

Abstract: A scheduler is adapted to schedule packets or other data blocks for transmission from a plurality of transmission elements in timeslots of a frame in a communication system. In scheduling for a given frame, the scheduler initially designates each of the transmission elements as eligible to transmit one or more data blocks in the given frame, and selects from among those of the transmission elements designated as eligible at least one of the transmission elements for scheduling in a next available timeslot of the given frame. The scheduler then adjusts the eligibility status of the selected transmission element(s), and repeats the selecting and adjusting operations for one or more remaining timeslots of the given frame. The scheduler in an illustrative embodiment may be implemented in a network processor integrated circuit or other processing device of the communication system.

Abstract: The present invention relates to a resource allocation and data receiving method. A resource allocation message for allocating a resource for an uplink dedicated channel is transmitted to a relay station, a receipt check message on the resource allocation message is received from the relay station, and successful resource allocation is checked.

Abstract: A respective number of terminals are managed by network agents. When initializing a connection between two terminals, the network agent initializes the connection if the relevant terminals are arranged in the same bandwidth-uncritical area. If one of the terminals is arranged in a bandwidth-critical area, the network agent ascertains the requested bandwidth and sends a resource request to an associated bandwidth broker, which uses a topology function and knowledge of bandwidth used by existing connections to check the availability of the requested bandwidth in the bandwidth-critical area of the communication network. The use of network agents and the fact that resource requests are no longer required in the communication network dynamically reduces the load on bandwidth brokers and superordinate bandwidth brokers to a significant extent.

Abstract: A method includes receiving network information for calculating weighted round-robin (WRR) weights, calculating WRR weights associated with queues based on the network information, and determining whether a highest common factor (HCF) exists in relation to the calculated WRR weights. The method further includes reducing the calculated WRR weights in accordance with the HCF, when it is determined that the HCF exists, and performing a WRR scheduling of packets, stored in the queues, based on the reduced WRR weights.

Abstract: Aspects of a method and system for best-M CQI feedback together with PMI feedback may include generating a plurality of feedback messages, which may be communicated from a mobile station to a base station, wherein at least one of the generated plurality of feedback messages may be associated with each corresponding selected one of a plurality of Channel Quality Indicator (CQI) reporting units. The at least one of the generated feedback messages may comprise CQI information and Pre-coding Matrix Index (PMI) information, which may both be associated with the selected one of the plurality of CQI reporting units. At least one other of the generated plurality of feedback messages may comprise an aggregate CQI information, which is based on one or more of the plurality of CQI reporting units.

Abstract: Optimizing data rates for video services on a broadband network. Different data rates can be delivered to a subscriber premises depending on the size of the display screen connected to a set-top box, the type of content being requested, or whether there is real-time viewing. Therefore, the data rate can be optimized to maximize the number of video streams that can be delivered to any one subscriber without causing a perceived reduction in video picture quality.

Abstract: A method for registration of multiple entities belonging to a specific optical networks unit (ONU). In one embodiment, the multiple entity registration method comprises checking by an optical line terminal (OLT) if a registration request message (400) received from the specific ONU belongs to a certain grant (402), and based on the check result, registering an entity as either a first (408) or as an additional entity (404) of the specific ONU. In another embodiment, the method comprises checking by an OLT of a reserved value of a flags field (502) inside a registration request message (500), and based on the check result, registering an entity as either a first (508) or as an additional entity (504) of the specific ONU. The knowledge by an OLT that multiple entities belong to a specific ONU is used for grant optimization and packet data flow optimization.

Abstract: In a GPON system conforming to ITU-T Recommendations G.984.3, an optical line terminal is provided which has an active bandwidth allocation function that preferentially puts small bandwidth signals in a particular segment of a frame, e.g., at a head of the frame, to prevent fragmentations that may occur particularly when allocating small bandwidths of about 100 kbits/s.

Abstract: A method, system and apparatus for dynamically modifying the quality of service provided to a mobile communication device. The method includes the steps of establishing a secure tunnel between the mobile communication device and a remote network through a wireless network; communicating through the secure tunnel at a first quality of service; determining that a second quality of service, higher or lower than the first quality of service, is more appropriate to the communication type, and requesting, from the wireless network, the second quality of service.

Abstract: The present invention relates to a method and an apparatus for controlling message traffic licenses. The method includes: controlling message traffic through an ordinary license; judging whether the triggering conditions of using the first extended license are fulfilled, and, if the triggering conditions are fulfilled, using the first extended license to control the message traffic. The apparatus includes: a license management module, adapted to switch between the licenses according to the triggering conditions of the message traffic license; and a control module, adapted to control the message traffic by using the license selected by the license management module.

Abstract: Radio resource management for wireless cellular networks equipped with relay stations for multi-hop packet or protocol data unit (PDU) relaying.

Abstract: Methods and apparatus are provided for constructing scheduling assignments for transmission, by a User Equipment (UE), of data signals over a single contiguous bandwidth and multiple non-contiguous clusters of contiguous bandwidth. The scheduling assignments for each transmission structure are designed to always result into the same maximum number of decoding operations the UE needs to perform to receive the scheduling assignments. The data signal transmission over the single contiguous bandwidth can be with or without frequency hopping and the data signal transmission over the multiple non-contiguous clusters of contiguous bandwidth may always be without frequency hopping.

Abstract: A fixed broadband wireless data access service providing shared wide-band packet-switched data transport for high speed data access in areas where conventional ADSL service and fiber optic service are unavailable. The wireless data access service is a point-to-multipoint cellular-type network that connects customers to data service providers through the ATM backbone of an existing network. Customers connect to the ATM backbone and data service provider through a cellular grid in which a wireless base station in each cell communicates with the individual customer wireless equipment within its cell site coverage area. The base stations are connected to an ATM backbone switch through wireless and wireline backhaul links. The upstream and downstream bandwidths of the wireless broadband network are engineered in various symmetric and asymmetric configurations to provide a shared packet-switched connection that emulates an uninterrupted, direct wireline ADSL connection.

Abstract: Virtual dedicated voice connections between parties to a packet-switched system can be created by reserving capacity for such connections in the packet-switched system. The capacity reservable by any one party is limited to prevent over-subscription of resources in the packet switched. The system incorporates a call admission control processor for controlling access to the packet-switched call routing system such that a voice call attempt is successful only if capacity for such a dedicated connection has previously been reserved. The capacity reserved for the virtual connections is made available for use by other traffic when not required for voice sessions.

Abstract: A method includes receiving network information for calculating weighted round-robin (WRR) weights, calculating WRR weights associated with queues based on the network information, and determining whether a highest common factor (HCF) exists in relation to the calculated WRR weights. The method further includes reducing the calculated WRR weights in accordance with the HCF, when it is determined that the HCF exists, and performing a WRR scheduling of packets, stored in the queues, based on the reduced WRR weights.

Abstract: A system that indicates which frame should next be removed by a scheduler from flow queues within a network device, such as a router, network processor, and like devices is disclosed. The system includes a search engine that searches a set of calendars under the control of a Finite State Machine (FSM), a current pointer, and input signals from an array and a clock line providing current time. Also included is a decision block that determines which of the searches are critical and which, during peak calendar search periods, can be postponed with minimal impact to the system. The postponed searches are then conducted at a time when there is available calendar search capacity.

Abstract: Systems and methods are disclosed for providing switched broadband. The disclosed systems and methods may include creating a traffic signature corresponding to a network element connected to a network, the network element having a network element ID and being addressable on the network by the network element ID. Furthermore, the disclosed systems and methods may include optimizing a quality of service for the network element based on the created traffic signature.

Abstract: A method of providing digital data services between a communications service provider and a customer site over a communications loop may include predicting a level of performance of the communications loop without coupling a modem to the communications loop at the customer site to provide a predicted level of performance of the communications loop. The communications loop may be qualified for an initial qualified level of digital data service based on the predicted level of performance of the communications loop. After qualifying the communications loop, digital data service may be provided over the communications loop at the initial qualified level using a modem coupled to the communications loop at the customer site, and a measured level of performance of the communications loop may be obtained based on data communicated between the communications service provider and the modem over the communications loop. The measured level of performance may then be compared with the predicted level of performance.

Abstract: A method is provided for reclaiming bandwidth from an edge device. The method includes communicating a bandwidth query message to at least one session manager. The bandwidth query message specifies an amount of bandwidth that needs to be reclaimed from a single one of a plurality of edge devices in order to establish at least one additional session that delivers a digital service to a subscriber in a service group serviced by the plurality of edge devices over an access network. In response to communication of the bandwidth query message, a bandwidth query response message is received from the session manager identifying an edge device from which at least the specified amount of bandwidth can be reclaimed. A response is communicated to the session manager requesting the session manager to reclaim the specified amount of bandwidth from the edge device that has been identified.

Abstract: Methods and apparatus in a wireless device for use in maintaining appropriate authentication credentials for receiving a message service provided by a service network which is external to a wireless network are described. The wireless device receives, via the wireless network, a data session configuration file which includes a list of a plurality of wireless networks mapped against authentication credentials associated with each said wireless network. The list includes authentication credentials associated with the wireless network. The wireless device submits, via the wireless network, the authentication credentials for establishing a data session via the wireless network. Then, the wireless device receives, in the data session via the wireless network, the message service provided by the service network.

Abstract: Methods are provided for managing hierarchically organized subscriber profiles. According to one embodiment, a policy engine of a VR defines services available to subscribers in terms of profile identifiers. A scalable subscriber profile database is established having a memory requirement dependent upon the number of available service contexts by hierarchically organizing profile identifiers as leaf profile identifiers, which explicitly define services, and intermediate profile identifiers, which indirectly represent services. The policy engine receives a first-level profile identifier and determines whether it is among those stored in the database. If not, then it obtains service profile information associated with the first-level profile identifier. If the first-level profile identifier is an intermediate profile identifier having leaf profile identifiers, then it further obtains them and associated profile information and stores this information in the database.

Abstract: A technique dynamically assigns priorities to traffic engineering (TE) label switched paths (LSPs) from a head-end node of a computer network. The novel technique increases the ability to place TE-LSPs that would be otherwise blocked by bandwidth fragmentation. Specifically, a head-end node allocates a range of priority values for groups of possible TE-LSP configurations, such as, e.g., groups by type and/or size of the possible TE-LSPs. When requesting a TE-LSP, the head-end node attempts to establish the TE-LSP by dynamically increasing a priority value of the TE-LSP within the corresponding range of priority values until adequate resources are available, at which time the head-end node may establish the TE-LSP.

Abstract: A method for providing a priority-based, low-collision distributed coordination function (DCF) in a wireless network is provided. The network includes an access point and a plurality of stations. The method includes receiving at a first station a super-frame from the access point. The super-frame is operable to define a service period for each of the stations. A priority for the first station is determined based on the super-frame. A back-off time is selected for the first station based on the priority.

Abstract: Disclosed herewith is a PON system and a bandwidth controlling method capable of controlling congestion with use of an upstream bandwidth in a PON section efficiently when congestion occurs in a gateway (GW) connected to an OLT. An OLT connected to a plurality of ONUs through a passive optical network (PON) and to a gateway (GW) through a communication line, when receiving a congestion occurrence notice indicating a congestion occurred output number from a GW, identifies the identifier of the ONU that is using a GW output line having the congestion output port number and shifts the bandwidth controlling of the PON section in a normal mode for allocating a bandwidth to each ONU normally to that in a bandwidth suppression mode for allocating a congestion time allowable bandwidth that is less than the current bandwidth to the ONU having the identified ONU identifier and a bandwidth to each of other ONUs according to its transmission queue length.

Abstract: Numerous enhancements to metro Ethernet network (MEN) services include an enhancement of the overall MEN Quality of Service (QoS) architecture, an enhancement to classification at the provider edge, the use of Ethernet QoS classes, enhancements to policing and marking at ingress provider edge equipment, the provision of traffic management functions at egress provider edge equipment, the use of multiple Ethernet virtual connections (EVCs) and Aggregate EVCs, an enhancement to QoS across an external network-network interface and an enhancement to treatment of Ethernet service frames in a core network.

Abstract: The present disclosure describes systems and methods that facilitate the allocation of spectrum for wireless communications. A database may be maintained that includes spectrum that has been offered by spectrum holders for use by spectrum users. Portions of the offered spectrum that have been allocated to spectrum users may be identified, the remainder of the offered spectrum being unallocated spectrum. A request specifying aspects of desired spectrum may be received from a user. A lack of available spectrum from the offered spectrum that fulfills the specified aspects in the request may be identified. Unallocated spectrum from a corresponding spectrum offer may be apportioned to fulfill the request with unallocated spectrum that matches the time duration and the geographic area aspects of the request and that has a frequency range that is shifted from the frequency range of the request for at least a portion of the time duration.

Abstract: A dynamic bandwidth allocation method of an Ethernet passive optical network, comprises a predictor and a rule of QoS-promoted dynamic bandwidth allocation (PQ-DBA); the predictor predicts a client behavior and numbers of various kinds of packets by using a pipeline scheduling predictor consisted of a pipelined recurrent neural network (PRNN), and a learning rule of the extended recursive least squares (ERLS); the present invention establishes a better QoS traffic management for the OLT-allocated ONU bandwidth and client packets sent by priority.

Abstract: A method and apparatus are disclosed for adjusting the bandwidth of a connection between at least two communication endpoints in a data network via a monitoring unit and a control unit. The connection in the data network is assigned at least one transmission channel for data transmission. The user data is, in this case, allocated to at least one communication connection; in particular a voice connection. The monitoring unit monitors the signaling connection for requests for at least one further communication connection; in particular, a voice connection. When a request occurs, it signals to the control unit to assign to the connection one or more additional free transmission channels for the at least one requested communication connection.