1047 results about "Traffic load" patented technology

Systems and methods for correlating and distributing intrusion alert information among collaborating computer systems are provided. These systems and methods provide an alert correlator and an alert distributor that enable early signs of an attack to be detected and rapidly disseminated to collaborating systems. The alert correlator utilizes data structures to correlate alert detections and provide a mechanism through which threat information can be revealed to other collaborating systems. The alert distributor uses an efficient technique to group collaborating systems and then pass data between certain members of those groups according to a schedule. In this way data can be routinely distributed without generating excess traffic loads.

Systems and methods provide an alert correlator and an alert distributor that enable early signs of an attack to be detected and rapidly disseminated to collaborating systems. The alert correlator utilizes data structures to correlate alert detections and provide a mechanism through which threat information can be revealed to other collaborating systems. The alert distributor uses an efficient technique to group collaborating systems and then pass data between certain members of those groups according to a schedule. In this way data can be routinely distributed without generating excess traffic loads.

A method for a computer network includes sending a first request from a web client for resolving a first web address of a web page to a client DNS server, sending the first request from the client DNS server to a POP DNS server within a POP server network, using a probe server in the POP server network to determine traffic loads of a plurality of customer web servers, each of the customer web servers storing the web page, using the POP DNS server to determine a customer web server from the plurality of customer web servers, the customer web server having a traffic load lower than traffic loads of other customer web servers in the plurality of customer web servers, requesting the web page from the customer web server, the web page including static content represented by an embedded URL, sending the web page from the customer web server to the web client, sending a second request from the web client for resolving the URL to the client DNS server. sending the second request from the client DNS server to the POP DNS server within a POP server network, using the probe server to determine service metrics of a plurality of web caches within the POP server network, using the POP DNS server to determine a web cache from the plurality of web caches, the web cache having service metrics more appropriate for the second request than service metrics of other web caches in the plurality of web caches, requesting the static content from the web cache, sending the static content to the web client, and outputting the static content with the web client.

The present invention provides a method for feedback and transmission of multi-user (MU) multiple input multiple output (MIMO) in a wireless communication system. The method includes steps of selecting subset codebook or full code book based on traffic load of a base station, and broadcasting the selected codebook to user equipments. In high traffic load, subset codebook is selected, and in low traffic load, full codebook is selected. User stations calculated a channel quality indicator of a spatial codeword vector that is included in the selected codebook. Information of the maximum channel quality indicator is sent to the base station together with a precoder of the user equipment. The base station selects user equipments based on the information of the maximum channel quality indicator and precoder, and transmits precoder signal and data signal to the user equipments. The present invention also provides a system for the base station that causes the base station to perform the above mentioned operations.

A method and apparatus for controlling an output power level of a radio frequency (RF) repeater (100 or 200). A system includes a receiver to receive a signal, a filtering unit configured to pass frequency components at or around a frequency band of a predetermined communication channel, an attenuator (124 or 142) to produce an attenuated signal by attenuating a parameter of the signal, a power amplifier (150) to adjust the output power level of repeater to a desired level by adjusting the gain of one or more components of the system, and a microprocessor (170) to receive an input responsive to the output power level of the repeater and, in response to the input, to transfer control signals to the receiver and the attenuator. The method includes sampling traffic load characteristics during operation of a network and adjusting a gain of one or more components of the repeater based on the traffic load characteristics.

A communication system balances message traffic between return channel groups and within the groups, so that the user does not control the specific transmission frequency used. Uplink frequencies and bandwidths for the return channels are set by the system in a return channel control message in the broadcast signal so as to account for system and return channel group loading, and to account for user message backlogs. An initial transmission from a remote user may be made using an ALOHA-type burst signal that provides a message backlog to the control station, and is made on a frequency determined from a randomly weighted, load-based frequency selection process. The system, and not the individual users determine the frequency and channel allocations. For large backlogs or priority users, periodic bandwidth is provided. A method for balancing loads among and between groups of return channels in the communication system includes requesting return channel bandwidth in an uplink message from a remote user to a control station. The uplink message may include a both a backlog indicator and a bandwidth allocation request provided to a Network Operations Center (NOC) which can be used to set the return channel bandwidth and frequency for the remote uplink. A user message is transmitted on the designated return channel frequency using bandwidth allocated in accordance with the backlog indicator and a bandwidth allocation request so that traffic loads are maintained in balance between established return channel frequency groups, and within each return channel frequency group.

A dynamic upstream bandwidth allocation scheme is disclosed, i.e., limited sharing with traffic prediction (LSTP), to improve the bandwidth efficiency of upstream transmission over PONs. LSTP adopts the PON MAC control messages, and dynamically allocates bandwidth according to the on-line traffic load. The ONU bandwidth requirement includes the already buffered data and a prediction of the incoming data, thus reducing the frame delay and alleviating the data loss. ONUs are served by the OLT in a fixed order in LSTP to facilitate the traffic prediction. Each optical network unit (ONU) classifies its local traffic into three classes with descending priorities: expedited forwarding (EF), assured forwarding (AF), and best effort (BE). Data with higher priority replace data with lower priority when the buffer is full. In order to alleviate uncontrolled delay and unfair drop of the lower priority data, the priority-based scheduling is employed to deliver the buffered data in a particular transmission timeslot. The bandwidth allocation incorporates the service level agreements (SLAs) and the on-line traffic dynamics. The basic limited sharing with traffic prediction (LSTP) scheme is extended to serve the classified network traffic.

The present disclosure is a novel utility of a software defined radio (SDR) based Distributed Antenna System (DAS) that is field reconfigurable and support multi-modulation schemes (modulation-independent), multi-carriers, multi-frequency bands and multi-channels. The present disclosure enables a high degree of flexibility to manage, control, enhance, facilitate the usage and performance of a distributed wireless network such as flexible simulcast, automatic traffic load-balancing, network and radio resource optimization, network calibration, autonomous / assisted commissioning, carrier pooling, automatic frequency selection, frequency carrier placement, traffic monitoring, traffic tagging, pilot beacon, etc. As a result, the SDR DAS can increase the efficiency and traffic capacity of the operators' wireless network.

A system and method of providing a subscriber service to service users in a telecommunications network. In networks utilizing Session Initiation Protocol (SIP) control signaling for call setup and control, the SIP REGISTER message is modified to indicate service capability information and optionally a traffic load indication for service providers. The REGISTER message is sent to a modified Presence and Instant Messaging (PIM) server that stores presence information and the service capability information for registered service providers. The PIM server then notifies subscribing service users of the identity of the service provider that is registered on the network. The PIM server may utilize the traffic load information to balance the traffic load between service providers by providing users with the identity of the service provider that is the most lightly loaded.

A communication system balances message traffic between return channel groups and within the groups, so that the user does not control the specific transmission frequency used. Uplink frequencies and bandwidths for the return channels are set by the system in a return channel control message in the broadcast signal so as to account for system and return channel group loading, and to account for user message backlogs. An initial transmission from a remote user may be made using an ALOHA-type burst signal that provides a message backlog to the control station, and is made on a frequency determined from a randomly weighted, load-based frequency selection process. The system, and not the individual users determine the frequency and channel allocations. For large backlogs or priority users, periodic bandwidth is provided. A method for balancing loads among and between groups of return channels in the communication system includes requesting return channel bandwidth in an uplink message from a remote user to a control station. The uplink message may include a both a backlog indicator and a bandwidth allocation request provided to a Network Operations Center (NOC) which can be used to set the return channel bandwidth and frequency for the remote uplink. A user message is transmitted on the designated return channel frequency using bandwidth allocated in accordance with the backlog indicator and a bandwidth allocation request so that traffic loads are maintained in balance between established return channel frequency groups, and within each return channel frequency group.

A system and method of providing a subscriber service to service users in a telecommunications network. In networks utilizing Session Initiation Protocol (SIP) control signaling for call setup and control, the SIP REGISTER message is modified to indicate service capability information and optionally a traffic load indication for service providers. The REGISTER message is sent to a modified Presence and Instant Messaging (PIM) server that stores presence information and the service capability information for registered service providers. The PIM server then notifies subscribing service users of the identity of the service provider that is registered on the network. The PIM server may utilize the traffic load information to balance the traffic load between service providers by providing users with the identity of the service provider that is the most lightly loaded.

A method of monitoring telecommunications network traffic comprising the steps of: receiving a packet stream comprising packets each identified as belonging to one of at least three classes; calculating a difference between the numbers of packets received identified as belonging to a first and a second of said classes; and deriving a measure of traffic load on the network responsive to said difference. The invention also relates to a method for admission control based on the above method of monitoring and a method for overcoming admission control avoidance. It also relates to apparatus embodying these methods.

The invention includes a method and apparatus for establishing DIAMETER associations between nodes of a network. The invention uses a DIAMETER application server disposed between DIAMETER nodes in order to establish DIAMETER associations between nodes and, further, to provide DIAMETER traffic load balancing using established associations. A method includes receiving a DIAMETER connection establishment request from an originating node requesting an association with a destination node, terminating the DIAMETER connection establishment request, obtaining respective DIAMETER associations for the originating node and the destination node, linking the obtained DIAMETER associations, and storing the linked DIAMETER associations. The DIAMETER association for a node may be obtained by identifying a node associated with the DIAMETER connection establishment request, determining if an association exists for the identified node, and retrieving the association from memory if an association exists for the identified node, retrieving the association from memory, or, if an association does not exist for the identified node, establishing the association.

Apparatus and methods for reconfiguration of a communication environment based on loading requirements. Network operations are monitored and analyzed to determine loading balance across the network or a portion thereof. Where warranted, the network is reconfigured to balance the load across multiple network entities. For example, in a cellular-type of network, traffic loads and throughput requirements are analyzed for the access points and their user equipment. Where loading imbalances occur, the cell coverage areas of one or more access points can be reconfigured to alleviate bottlenecks or improve balancing.

The present invention provides a method and an apparatus for balancing traffic load between a plurality of users on one or more shared wireless channels, e.g., from a communication node associated with a network of a plurality of cells including a first and a second cell. The method comprises determining a first indication of traffic load for a first cell and a second indication of traffic load for a second cell on the one or more shared wireless channels and redistributing the traffic load on the one or more shared wireless channels associated with the first cell and the second cell based on the first indication of traffic load for the first cell and the second indication of traffic load for the second cell. A scheduler, e.g., at a Node B and a decision algorithm at a controller, e.g., a radio network controller may be used in a wireless telecommunication system that uses wireless channels including a shared channel, a forward access channel, a random access channel, as well as a dedicated channel to switch traffic associated with at least one user of a multiplicity of users on a shared wireless channel from a cell to another cell. In this manner, for user equipment, e.g., a Universal Mobile Telecommunications System mobile station, a decision algorithm in a Universal Mobile Telecommunications System Terrestrial Radio Access Network may direct at least a part of the traffic load on a shared channel from a source cell to a target cell by moving a cell border without affecting a traffic load on a dedicated channel.

A communication system with a plurality of access points (AP1, AP2, AP3) and at least one network station (5, 6), the network station (5, 6) being arranged to communicate with one of said plurality of access points (AP1, AP2, AP3) through a wireless communication protocol, each access point (AP1, AP2, AP3) is able to: monitor its access point traffic load and transmit an access point traffic load parameter (ATT) to the network station (5, 6), and the network station (5, 6) is able to: monitor its network station traffic load; store a network station traffic load parameter (AUTT); receive access point traffic load parameters (ATT) from the access points (AP1, AP2, AP3); select a communication connection with one of the access points (AP1, AP2, AP3) using a predetermined cost function taking the access point traffic load parameters (ATT) and the network station traffic load parameters (AUTT) into account.

A method and apparatus for selecting paths to route incoming traffic through a data communication network, which is capable of effectively dispersing the traffic load to the selected paths on the network and effectively optimizing the use of network resources. In a communication network, a plurality of label switched paths between an ingress node and an egress node are provided. Incoming traffic at the ingress node is labeled and delivered through the network to the egress node. In a method and apparatus for selecting paths to route the incoming traffic through the network, a plurality of forwarding equivalent class elements (FEC) of the incoming traffic at the ingress node are allocated for the plurality of label switched paths. The labeled traffic is delivered on the plurality of label switched paths on an FEC-element basis so as to route the labeled traffic through the network to the egress node. The traffic load on the respective label switched paths can be effectively dispersed and the sequence of data packets, sent by the same terminal, may be maintained.

A plurality of base stations communicate with a plurality of mobile units. Each base station includes a base station transceiver that receives inbound information from the mobile units and transmits outbound information to the mobile units. A mobile switching center (MSC) is coupled to the base stations and communicates the inbound information and outbound information with the base stations. The base stations each include signal detectors that detect signal strength of the inbound information, co-channel information and adjacent channel information. The MSC maintains a table of signal strength per communication channel and allocates communication channels to the base stations based on the signal strength information. The inventive dynamic channel allocation includes several channel allocation algorithms that can be active at the same time. Only one of the algorithms is active at a time. The choice of the algorithm is based on current interference conditions and traffic load. The invention is implemented in the MSC and base stations of a digital cellular network using wideband technology for its air interface. While the decision-making mechanism and the channel allocation algorithms are implemented in the MSC, the protocol between the MSC and base stations is extended to support the proposed concept for dynamic channel allocation. Advantages of the invention includes improved communication and reduced interference.

A load balancing system and methodology for packet-based wireless cellular networks, whereby wireless access points are dynamically reconfigured by altering their transmission power level to modify their area of coverage. The modification function is based on the localized traffic load or congestion at each individual access point, or the collective load experienced by groups of access points. This modification to the cellular layout is used as an implicit load-balancing technique. When an overloaded access point reduces its coverage area, it forces some wireless client devices that were earlier within its footprint, but no longer within its coverage area, to attach to alternative access points. Similarly, when an underloaded access point increases its coverage area, it provides an opportunity to wireless devices, which were earlier outside its footprint, but now within the expanded coverage area, to switch attachment to this access point. By changing the access point to which a wireless device attaches, the load-levels on the individual access points are indirectly changed.

The present invention provides a method for feedback and transmission of multi-user (MU) multiple input multiple output (MIMO) in a wireless communication system. The method includes steps of selecting subset codebook or full code book based on traffic load of a base station, and broadcasting the selected codebook to user equipments. In high traffic load, subset codebook is selected, and in low traffic load, full codebook is selected. User stations calculated a channel quality indicator of a spatial codeword vector that is included in the selected codebook. Information of the maximum channel quality indicator is sent to the base station together with a precoder of the user equipment. The base station selects user equipments based on the information of the maximum channel quality indicator and precoder, and transmits precoder signal and data signal to the user equipments. The present invention also provides a system for the base station that causes the base station to perform the above mentioned operations.

A method is provided of controlling traffic load on a link in a telecommunications network. The link carries user sessions of non-real time, NRT, and real time, RT, services. The method comprises periodically monitoring traffic load on the link in the network. The method further comprises successively restricting alternately NRT and RT traffic on said link so as to bring said load below a predetermined level.

A hybrid network controller may determine and / or communicate traffic management information for enabling setup and / or handoff of call and / or communication session among femtocells, access points and / or end-point devices. Traffic management information may comprise set-up instructions, handoff instructions, transmit power, neighbor list information, signal quality thresholds, frequency assignments, transmission time, code assignments and / or antenna pattern assignments. The hybrid network controller and / or an end-point device may control handoffs between a communication device external to the communication system and the femtocells, access points and / or end-point devices. Received signal strength, interference levels, SNR, signal path delay, power consumption, traffic loads, bandwidth usage and / or radio resource availability may be monitored and / or analyzed by the hybrid network controller. The hybrid network controller may assign time slots, codes, antenna patterns as well as a serving femtocell and / or AP for a set up and / or a handoff. The information may be communicated via wired, optical and / or wireless interfaces.

A method and apparatus are described including receiving a route request message to establish a streaming route, determining a cost of a reverse route and traffic load introduced by the requested streaming route, discarding the route request message if one of wireless interference constraints for the requested streaming route cannot be satisfied and quality of service requirements for the requested streaming route cannot be satisfied, pre-admitting the route request message if wireless interference constraints for the requested streaming route can be satisfied and if quality of service requirements for the requested streaming route can be satisfied, adding a routing table entry responsive to the pre-admission, admitting the requested streaming route, updating the routing table and transmitting a route reply message to an originator if requested content is cached, updating the route request message and forwarding the updated route request message if the requested content is not cached, receiving a route reply message and deleting the pre-admitted routing table entry if a time has expired.

The invention relates to a method and system for managing data flow between Mobile Nodes (MNs), Access Routers (AR) and peer nodes (HA, CNs), wherein, when a Mobile Node makes handover from one Access Router (AR) to new Access Router (AR2, AR3, . . . ARn), a decision is made whether to command the first Access Router (AR1) to act as an Anchor Access Router and forward data from the peer nodes (HA, CNs) to the Mobile Node via the new Access Router (AR2, AR3, . . . ARn), or to send an update of the new position of the mobile node to a peer node (HA, CN). The decision is made based on at least one of the following criterias: -the number of peer nodes (HA,CN1, CN2, . . . CNn) to which it has ongoing sessions, -the time elapsed from a previous update sent to the peer nodes (HA, CNs), -the traffic activity between the peer node(s) (HA, CN1, CN2, . . . CNn) and the Mobile Node (MN), -amount of signaling or traffic load between mobile node and Access Router and / or peer nodes, -the state of the underlying layers, -the state of the mobile node, -the frequency of handovers.

A system and method for selecting a wireless network is disclosed. The method relates to selecting a wireless network from a plurality of wireless networks. A variation of the invention includes selecting a new platform from a plurality of platforms offered by the current service provider according to a service request from the wireless device. The method comprises determining a requested service associated with the wireless device, determining whether one of the plurality of wireless networks can provide the requested service, and, if one of the plurality of wireless networks can provide the requested service, choosing the one wireless network of the plurality of wireless networks. The method further involves using a variety of parameters in determining which wireless network to choose for servicing the requested service from the wireless device. These parameters include quality of services, application supported, other business factors such as roaming agreements, traffic load and cost of services. The system comprises at least one wireless network node, a wireless device, and a plurality of wireless networks communicating with each other. Either the wireless device or network node may operate to decide based on the services the wireless device user requires on which network the user will receive service from. The network assignment is accomplished to maximize the speed, cost and efficiency of transmission.

A method, apparatus, and computer program product for balancing transmission unit traffic over network links, including disposing transmission units into flows; grouping flows into first flow lists, each corresponding to a selected network link; determining a traffic metric representative of a traffic load on the selected network link; responsive to the traffic metric, regrouping flows into second flow lists corresponding to the selected network link, the regrouping balancing the transmission unit traffic among the network links; and transmitting the respective second flow list over the respective selected network link. The invention also can include a method for transmitting transmission units through a network, including receiving a transmission unit from a transmission unit source; classifying the transmission unit according to a predetermined flow characteristic; selecting a preselected network link over which the transmission unit is to be transmitted; and transmitting the transmission unit over the preselected network link.