Abstract: An enhanced mobile communication device communicates directly with other enhanced mobile communication devices in an ad-hoc mode over a wireless medium. The device transmits and receives packets of digital data. The packets of digital data are such that when transmitted, the probability that they will be received by the other mobile communication devices is increased. The probability is further increased by transmitting the packets a multiple and variable number of times according activity in the wireless medium. Attempts to transmit are made periodically and the period of transmission is adjusted according to activity in the wireless medium. In a transportation application, the packets comprise vehicle traffic congestion update information. The device maintains a traffic database and a map database. Traffic congestion update information is exchanged with other devices.

Abstract: Systems and methods for providing the progressive download of media content using techniques that preferentially identify and use periods of surplus network capacity to maintain the content delivery. A buffer of a receiving system is maintained and pre-filled with enough content to bridge playback intervals where a network is unable to deliver content as fast as it is played out. Content delivery does not impact other users' applications and use of the network and its resources since content is only sent when surplus network capacity exists in the network. When no surplus network capacity is available, a user requesting content may be given the option to continue the delivery in the background so that the content may be played at a later time. The user may then resume their playback experience once the content has been completely delivered using surplus network capacity as it becomes available.

Abstract: A method implemented in a network for placing services at network devices is disclosed. The network contains a plurality of network devices and offers a set of services to subscribers. Subsets of the set of services are included in ordered service chains for subscribers. The method starts with determining a list of bandwidth consumption entities of a service for each service within the set of services, where each bandwidth consumption entity is based on one or more chains of services. Then a weight of each service is calculated based on the list of bandwidth consumption entities of the service and a service with a highest weight within the group of one or more services that have not been placed is selected. The selected service is then placed at a network device based at least partially on calculating bandwidth impacts to the network by the service.

Abstract: A system and method is provided for intelligent bandwidth allocation in a wireless communication device supporting multiple interfaces. A wireless communications device operating in connection with a first communications interface and a second communications interface is capable of switching channels back and forth so as to receive beacons from both interfaces effectively and provide enough bandwidth for each interface for data traffic to continue without any observable interruptions.

Abstract: A telecommunication and multimedia management apparatus and method that supports voice and other media communications and that enables users to: (i) participate in multiple conversation modes, including live phone calls, conference calls, instant voice messaging or tactical communications; (ii) review the messages of conversations in either a live mode or a time-shifted mode and to seamlessly transition back and forth between the two modes; (iii) participate in multiple conversations either concurrently or simultaneously; (iv) archive the messages of conversations for later review or processing; and (v) persistently store media either created or received on the communication devices of users. The latter feature enables users to generate or review media when either disconnected from the network or network conditions are poor and to optimize the delivery of media over the network based on network conditions and the intention of the users participating in conversations.

Abstract: An active transceiver circuit for transmission of a low bitrate data signal over and reception of a high bitrate data signal from a single ended transmission medium is provided. The active transceiver circuit includes an input port for receiving a low bitrate input data signal, an output port for delivering a high bitrate output data signal, a differential input/output port for launching a low bitrate data signal into the single ended transmission medium and for receiving a high bitrate data signal from the single ended transmission medium, a first and second single ended output driver adapted for each delivering, on their respective output nodes, the shaped low bitrate input data signal, and a high bitrate receiver for receiving the signals at output nodes of the first and second single ended output drivers, and for generating a high bitrate output data signal on the output port.

Abstract: A method and an arrangement for transmitting reference signals in a radio frame in a cellular communication system comprising at least one network node having a measurement bandwidth ?, which is more narrow than a full downlink bandwidth ? of said network node. Subframes only carrying reference signals, which are to be transmitted from said network node may be transmitted over a temporarily reduced transmission bandwidth ?, which is at least equally wide as the measurement bandwidth Y provided by the network node, and more narrow than the full downlink bandwidth ? of the network node. The use of a reduced transmission bandwidth leads to that less reference signals are transmitted, and thereby transmission power will be saved.

Abstract: Content is received within a network by a content receiver based upon fetch requests by the content receiver to a content source, where the fetch requests for content are based upon a first adaptation logic scheme to fill a buffer of the content receiver at a selected rate and to download segments of content at selected encoding rates. A network priority is detected at the content receiver that includes an observed download rate at the content receiver that is greater than a fair share rate for other content receivers in the network. Fetch requests for content are revised in response to detection of the network priority, where the revised fetch requests are based upon a priority adaptation scheme that results in at least one of filling the buffer at a faster rate and downloading segments of content at higher encoding rates compared with the first adaptation logic scheme.

Abstract: A method may include receiving a request to establish a quality of service (QoS) policy that identifies a desired QoS associated with traffic being transported by a network; generating a QoS model based on the identified desired QoS, where the QoS model includes a class of service (CoS) and corresponding forwarding priorities associated with the traffic; retrieving a service level agreement (SLA), associated with a client device that is interconnected to a network node associated with the network, where the SLA includes a particular CoS and corresponding other forwarding priorities for packets associated with the client device; creating a QoS provisioning policy based on the QoS model and the SLA, where the creating includes mapping the CoS to the particular CoS or mapping the forwarding priorities to the other forwarding priorities; and transmitting, to the network node, the QoS provisioning policy that permits the network node to process the packets in a manner that complies with the QoS model or the SLA.

Abstract: A method is provided of transfer of a call connection connecting a telecommunications base station and a mobile user terminal between dedicated channels in both directions therebetween and shared channels in both directions therebetween. The transfer is made dependent upon the amount of data buffered at the base station and the user terminal for transmission therebetween and/or the rate that data arrives at the base station and user terminal for transmission therebetween. The transfer is also dependent upon the value of a measured parameter of the signals between the base station and the user terminal, the parameter being signal attenuation or propagation delay.

Abstract: A path control apparatus of the present invention includes: a status change detecting unit that detects a status change of a network; a path calculating unit that decides a path in accordance with the status of the network; and a calculation execution node deciding unit that compares a shortest path tree, which is established before occurrence of a change in the status of the network calculated by the path calculating unit, with a shortest path tree, which is established after the occurrence of the change in the status of the network calculated by the path calculating unit, and creates information required for determining whether a node apparatus in the network needs a path update, when the change occurs in the status of the network.

Abstract: Data communications in a parallel active messaging interface (‘PAMI’) of a parallel computer, the PAMI composed of data communications endpoints, each endpoint including a specification of data communications parameters for a thread of execution on a compute node, including specifications of a client, a context, and a task, endpoints coupled for data communications through the PAMI and through data communications resources, including receiving in an origin endpoint of the PAMI a SEND instruction, the SEND instruction specifying a transmission of transfer data from the origin endpoint to a first target endpoint; transmitting from the origin endpoint to the first target endpoint a Request-To-Send (‘RTS’) message advising the first target endpoint of the location and size of the transfer data; assigning by the first target endpoint to each of a plurality of target endpoints separate portions of the transfer data; and receiving by the plurality of target endpoints the transfer data.

Abstract: Back pressure is mapped within a network, and primary bottlenecks are distinguished from dependent bottlenecks. Further, the presently disclosed technology is capable of performing network healing operations designed to reduce the data load on primary bottlenecks while ignoring dependent bottlenecks. Still further, the presently disclosed technology teaches identifying and/or suggesting a switch port for adding a node to the network. More specifically, various implementations analyze traffic load and back pressure in a network, identify primary and dependent bottlenecks, resolve the primary bottlenecks, collect new node parameters, and/or select a switch port for the new node. Further, a command can be sent to a selected switch to activate an indicator on the selected port. New node parameters may include new node type, maximum load, minimum load, time of maximum load, time of minimum load and type of data associated with the new node.

Abstract: Disclosed is a method for achieving efficient and accurate measurement of path capacities of a communication network. The method includes the following steps: (a) transmitting a number of probes from a local node to a remote node over a forward network path, each probe contains at least one probe packet and can elicit the remote node to transmit a number of response packets to the local node over a reverse network path; (b) determine for each response packet a minimum round-trip packet delay between the time transmitting the probe and the time receiving the response packet; (c) calculate a number of pair-wise minimum delay differences from the minimum round-trip packet delays. The number of pair-wise minimum delay differences can be used as a measurement of the forward capacity, reverse capacity, faster-path capacity, slower-path capacity and a degree of capacity asymmetry between the local node and the remote node.

Abstract: Sending a data stream from a sending endpoint to a receiving endpoint, wherein both of the sending endpoint and the receiving endpoint each have multiple physical interfaces connecting the sending endpoint and the receiving endpoint to multiple networks, respectively, is provided. The data stream is split into a series of data packets and sent over the multiple physical interfaces. A next available data packet of the series is sent over a fastest one of the multiple physical interfaces. A data packet from further back in the series is extracted in accordance with a determined expected difference in arrival time, and sent on a corresponding slower one of the multiple physical interfaces. The next available data packet is sent from the sending endpoint nearly simultaneously as the extracted data packet is sent from the sending endpoint.

Abstract: A device receives a packet provided in a wireless access network, and determines whether the packet is a payload packet or an acknowledgment (Ack) packet. The device also allocates, when the packet is an acknowledgement packet, the acknowledgment packet to an expedited priority queue, and allocates, when the packet is a payload packet, the payload packet to a regular priority queue. The device further delivers one or more acknowledgment packets provided in the expedited priority queue prior to delivering one or more payload packets provided in the regular priority queue.

Abstract: A method is disclosed that includes retrieving first data associated with a call from an action-object table. The method further includes retrieving second data from a resolution table based on the first data. The second data indicates a treatment type to be provided to the call. The method further includes, in response to determining that the treatment type indicates a particular treatment type, servicing the call with the particular treatment type. The particular treatment type includes routing the call to a destination associated with a call center.

Abstract: A method implemented in a network for enhancing transmission is disclosed. The network contains a number of network devices, and at least one network device provides traffic scheduling function to schedule transmission of packets. The method starts with arrival of a packet. In response to arrival of the packet, the network device determines whether a timer has expired, whether a congestion level has reached a congestion threshold, whether the packet is a high priority packet, and whether a burst accumulation counter has reached an accumulation threshold. The packet is transmitted, along with any packet waiting for transmission, in response to at least one of the conditions are satisfied: the timer has expired, the congestion level has reached the congestion threshold, the packet is a high priority packet, and the burst accumulation counter has reached the accumulation threshold.

Abstract: A method and system generates channel response estimates by performing time direction filtering of first channel estimates obtained from frequency direction filtering. A baseband integrated circuit (BBIC) receives information signals comprising reference signals, control signals provided by physical control channels, and data signals provided by physical data channels. Using a latency requirement of a physical channel, symbol selection logic selects valid reference signal symbol positions corresponding to first channel estimates from among frequency filtered received reference signals. A coefficient set selection logic selects a set of filter coefficients from among multiple sets of pre-optimized coefficients, utilizing at least one of (a) the latency requirement, (b) a channel condition, and (c) the selected reference signal symbol positions.

Abstract: Disclosed in an example embodiment is an apparatus comprising a transmitter and processing logic coupled with the transmitter. The processing logic is configured to send data via the transmitter. The processing logic generates a request to send frame. The processing logic encodes data representative of a bandwidth parameter set in the request to send frame. The processing logic transmits the request to send frame via the transmitter.

Abstract: A system and method for differentiated services in adaptive streaming are provided. A method for server operations includes: determining an optimization of aggregated quality of experience scores for a set of candidate subscribers served by a server; adjusting a service rate of at least one subscriber based on the determined optimization of aggregated quality of experience scores; and streaming information to the at least one subscriber based on the adjusted service rate. The optimization is based on one or more of: a subscriber level for one or more of the plurality of subscribers; a current service rate; and available service rates.

Abstract: A representative line card in a switch system that is configured of a layer 2 switching processor and a plurality of line cards connected to the layer 2 switching processor, the plurality of line cards including at least one representative line card, comprising: an FDB table having FDB information entried therein, and; a learning unit that receives a learning notification including the FDB information from the other line cards excluding its own line card via the layer 2 switching processor, determines whether the FDB information of the learning notification has been entried into the FDB table of its own line card, updates the FDB table of its own line card when the FDB information has not been entried, and transmits the learning notification including the FDB information to the other line cards via the layer 2 switching processor with a multicast.

Abstract: One embodiment includes a firewall, intrusion prevention, or other device that automatically and dynamically adjusts packets subjected to certain rate limiting based on the reputation level associated with these packets (e.g., based on the reputation score of the source of a packet). In response to measured traffic, one embodiment automatically adjusts the range of reputation scores determining which packets are subjected to this rate limiting (e.g., which packets are possibly dropped), such as, but not limited to increase or decrease the measured traffic. For example, packet traffic with a worse reputation can be singled out for this rate limiting during a period of increased traffic, and then when the measured traffic subsides, the range of reputation scores can be correspondingly changed to allow more measured traffic.

Abstract: In an embodiment, a method of controlling transmission of data from a wireless device to a receiver connected via a communication channel includes an application executing on the wireless device providing an estimate of end-to-end bandwidth of the communication channel; supplying to the application from wireless access circuitry in the wireless device at least on communication-related parameter and modifying in the application the estimate of end-to-end bandwidth using the at least one communication-related parameter.

Abstract: A method, apparatus and computer program product for packet buffering measurement is presented. A plurality of packets are transmitted to a packet switching device. Packets are received from the packet switching device. A determination is made, with respect to a particular time, based on packets transmitted to the packet switching device and packets received from the packet switching device, regarding a number of packets being held in a memory of the packet switching device.

Abstract: A computer-readable medium has tangibly embodied thereon and accessible therefrom a set of instructions interpretable by at least one data processing device. The set of instructions is configured for causing the at least one data processing device to carry out operations for estimating a delay for each one of a plurality of packets of a VOIP traffic flow and for allocating a delay budget for each one of the packets dependent upon the estimated delay thereof. Such estimating is performed at a fixed location between end locations of a path over which the packets traverse and is performed using packet timestamp information acquired from the packets only at the fixed location.

Abstract: A method of providing multicast rate control in a wireless communication device can include transmitting data frames to a plurality of stations in a multicast group with a first data rate. Acknowledgements (ACKs) can then be requested from a first subset of the plurality of stations. Frame losses can be determined using the ACKs from the first subset. A second data rate can be determined based on the frame losses with the first subset. A second subset of the plurality of stations can be selected based on the frame losses with the first subset. Data frames can be transmitted to the plurality of stations with the second data rate. Notably, ACKs only from the second subset of the plurality of stations are requested. Frame losses for the second subset can be determined using those ACKs. A current data rate can be adjusted based on the frame losses for the subset and at least one predetermined threshold. Data frames can be transmitted to the plurality of stations using the adjusted data rate.

Abstract: Methods and apparatus for allocating resources (such as communications bandwidth) using a network access device. In one embodiment, the network includes a wireless network (e.g., WiFi), and the access device includes a wireless router or gateway in communication with a plurality of wireless users. The device includes an administrator function which allows the network administrator to implement one or more resource allocation policies or rules. Using this approach, resources such as bandwidth can be allocated based on any number of different parameters or use classifications, including for example: (i) public versus private use; (ii) security level; (iii) user range from the access device; (iv) type of PHY or air interface; (v) type of channel coding; (vi) air interface mode or application (e.g., data versus voice). In one variant, the allocation policies are manually controlled by the administrator. In another variant, substantially automatic resource allocation is performed by the administrator program.

Abstract: A system and method for slow ad detection is provided. An ad tool receives information including round trip times to load web pages, in which each web page is loaded with at least one ad. Additionally, the ad tools calculates, for each ad, a mean round trip time to load each web page loaded with the respective ad. The ad tool then determines a predetermined number of the ads with highest mean round trip to load each of the web pages with the ad. Further, the ad tool enables testing of each of the predetermined number of ads to determine the round trip load time of each of the predetermined number of ads.

Abstract: A packet retransmission control system includes an application processing module on which an application for executing communication processing operates, a retransmission control determination module which determines whether to execute high-speed retransmission control by a lower layer based on a predetermined rule with respect to a packet whose sending is requested by the application processing module, a packet processing branching module which allocates a packet determined to be subjected to high-speed retransmission control and a packet determined not to be subjected to high-speed retransmission control, an MAC retransmission control module which executes retransmission control of a transmission packet by a retransmission time-out shorter in time than a protocol of a transport layer with respect to a packet determined to be subjected to high-speed retransmission control, and an external output module which externally outputs a packet sent from the MAC retransmission control module or the packet processing

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: Systems and methods are disclosed for determining network congestion. A wireless communications device may identify available networks and assess a congestion parameter for each wireless channel associated with those networks. Assessing congestion on a given channel may include identifying all access points operating on the channel and monitoring traffic associated with each access point. By performing this assessment for each channel, the channel exhibiting minimum congestions may then be selected.

Abstract: Techniques are provided for providing access control lists in a distributed network switch. The distributed network switch made of switch units is divided into logical switch partitions, or logical networks. Physical ports of the switch units are partitioned into logical ports, where each logical port is associated with a logical switch partition. A control point of the distributed network switch manages and assigns a service tag (S-Tag) used to identify which logical port ingress and egress frames are associated with. To generate metrics and other forwarding actions for a given logical switch partition, the control point sets up access control list (ACLs) targeting the logical port associated with the S-Tags associated with the given logical switch partition.

Abstract: A computer-implemented method for dynamic adjustment of quality of service parameters is described. In one embodiment, one or more quality of service (QoS) parameters of a client of a mesh network is set based on an expected bandwidth for the mesh network. An actual bandwidth for the mesh network is measured. One or more QoS parameters of the client is automatically changed in response to the actual bandwidth differing from the expected bandwidth. The change in the QoS parameters may be configured to compensate for the difference between the actual bandwidth and the expected bandwidth.

Abstract: A method for dynamically adjusting QoS parameters associated with a virtual circuit is disclosed. The virtual circuit includes a first end connected to a first router and a second end connected to a second router. The method includes receiving an offer message at the second router, and sending a request message to the first router. The offer message includes a first set of QoS parameters and the request message includes a second set of QoS parameters. The method further includes receiving a request confirmation message at the second router, receiving a new offer message at the second router, and sending information compliant with the second set of QoS parameters to the first router. The new offer message includes the second set of QoS parameters.

Abstract: A method embodiment for network authentication includes selecting, by a user equipment (UE), an access network for establishing a network connection and receiving one or more network authentication status indications for a network associated with the access network. The method further includes implementing a network authentication and selection policy in accordance with the one or more network authentication status indications.

Abstract: A receiving side data communication device calculates, at prescribed times, an actual measured RTT, which is the time required for data to travel to a transmission side data communication device and back, a data transfer rate for the data transfer, and a data loss ratio, which is the ratio of the number of packets not received by the receiving side data communication device to the number of packets sent from the transmission side data communication device. The receiving side data communication device uses the most recent data transfer rate and the data loss ratio to calculate a transfer score according to a prescribed calculation formula, and increases or decreases the reference RTT in accordance with the change in the transfer score.

Abstract: The present invention supports a scheduling protocol on a wireless communication network to transmit data packets stored in a queue from a user. Two performance metrics are generated and summed to provide a priority. The performance metrics are based on the delay for the data packets stored in the queue and the rate that the data packets can be transmitted on the network. The user with the higher calculated priority for the current time slot has its data packets transmitted.

Abstract: A method and system for improving responsiveness in exchanging management and control frames in a wireless local area network are disclosed. An initiator sends a frame (action, management, control or data frame) to a responder. Upon correctly receiving the frame, the responder sends a response frame to the initiator instead of directly sending an acknowledgement (ACK) packet. The responder preferably accesses the wireless medium to send the response frame in a short inter-frame spacing (SIFS). With this scheme, a long delay associated with having to contend for the wireless medium to send the response frame is avoided and therefore, the responsiveness and timeliness of the feedback mechanism is significantly enhanced. The response frame may be piggybacked on or aggregated with another packet.

Abstract: A base station apparatus in a radio communications system is disclosed. The radio communications system has a mobile station apparatus and the base station apparatus in communication with the mobile station apparatus to which is applied a scheduling scheme which allocates a radio resource for each of constant periods. The base station apparatus includes a first transmitting unit which conducts a first transmission of a first signal for each of the constant periods based on the scheduling scheme; and a second transmitting unit which conducts second and subsequent transmissions at predetermined timings when an error occurs in the first transmission.

Abstract: Feedback information including a transmission quality of a packet transmitted from a transmitting device to a receiving device is received from the receiving device and the transmission quality included in the feedback information is revised down, to be transferred to the transmitting device, based on information of resource consumed for maintaining a wireless link included in a path to the receiving device. The above revising down is executed if it is found that the information of resource consumed reaches a predetermined threshold or is not executed unless it is found otherwise. The information of resource includes, for example, the number of retransmission times of a packet for a predetermined period of time, a transmission power level or a code length of an error correcting code.

Abstract: A solution for extending the cell range and in particular for a solution for handling timing alignment is presented herein. The solution comprises determining a distance between user equipment and a radio access network node. User equipment located at a distance related to a pre defined timing advance value is scheduled to handle uplink communication so as to arrive at a later time slot for reducing the risk of conflicting with other transmissions towards the access node.

Abstract: The disclosed embodiments include a system, method, and computer program product for tracking conformance of user traffic with a bandwidth profile. For example, in one embodiment, throughput is measured during an observance window and an average for offered throughput is determined based on the measured throughput. A determination is made as to whether the average exceeds a bandwidth profile in response to a determination that packets are being discarded. An alarm is sent in response to a determination that the average exceeds the bandwidth profile.

Abstract: A cross-connect apparatus and method where the apparatus includes an interface section which divides signals from a transmission line into multiple paths to provide the signals to cross-connect sections, and multiplexes signals provided from the cross-connect sections to send out the signals to the transmission line, the cross-connect sections cross-connects the signals from the interface section to output the signals to the interface section. The cross-connect apparatus includes a control section which determines a number of paths divided by the interface section and an operation mode of the cross-connect sections, according to a line capacity occupied by the signals from the transmission line and which controls the interface section and stops an operation of a cross-connect section which does not perform cross-connect processing.

Abstract: A system and method (200) are disclosed for managing quality of service for multimedia applications. A system that incorporates teachings of the present disclosure may include, for example, a network management system (NMS) (106) having a controller (107) that manages operations of a Digital Subscriber Line Access Multiplexer (DSLAM) (109) interfacing to a digital subscriber line (DSL) modem (114) over a digital subscriber line. The controller can be programmed to detect (204) a signal quality violation in the digital subscriber line according to a quality policy associated with a content source, cause (210) the DSLAM to interleave content supplied thereto by the content source; and cause (212) the DSLAM to allocate to the content supplied by the content source a first portion of a data service bandwidth assigned to the digital subscriber line. Additional embodiments are disclosed.

Abstract: According to one embodiment, a packet distribution apparatus distributes packets each containing a digital content via a communication network. The packet distribution apparatus includes a generator, a packet transmitter, a detector and a swapper. The generator generates the packets for each session with a bit rate corresponding to a content to be distributed. The packet transmitter transmits the generated packets to the communication network. The detector detects a collision of transmission timings of the packets in the sessions. The swapper exchanges, upon detecting a collision of the transmission timings, a transmission order of packets associated with the collision of the transmission timings based on the bit rates.

Abstract: Certain aspects of the present disclosure relate to wireless communications and methods and apparatus for downlink flow control at a user equipment (UE). Aspects generally include monitoring, by a UE, one or more parameters related to the UE, and selectively dropping received packets based on the one or more parameters in order to trigger a rate control mechanism. Selectively dropping received packets may occur at a Packet Data Convergence Protocol (PDCP) layer in order to reduce a corresponding transmission control protocol (TCP) throughput. Accordingly, packets may be selectively dropped prior to reaching an applications processor.

Abstract: A management device for use in an access network including a plurality of data connections between end user devices and an aggregation transceiver device where the connections are aggregated for onward connection through the access network, the access network storing in association with each data connection a Dynamic Line Management, DLM, profile which specifies a set of values for a plurality of parameters associated with the respective data connection, together with a stability level specifying a desired level of stability for the data connection. The device includes means for receiving monitoring data specifying the stability of each respective data connection over a predetermined period of time; means for selecting a DLM profile to be applied to the connection in dependence on both the monitoring data and the stored stability level associated with the data connection; and means for requesting an OSS system of the access network to apply the selected profile to the data connection.

Abstract: A relay apparatus generates partial message data by assembling a package group, the packet group including, out of a plurality of packets received and related to one message, a head packet related to the one message up to a packet including, as a payload, user identification information in a header of the one message. The relay apparatus extracts the user identification information from the partial message data and identifying a user identifier from the user identification information. The relay apparatus performs a specific packet process, in accordance with the identified user identifier, on the packet group of the one message, and a packet not assembled by a packet assembling unit out of the plurality of packets.

Abstract: An apparatus and method for transmitting/receiving data in a mobile communication system using multiple antennas are provided. A receiver estimates a fading channel of received data, selects a weight set relative to a maximum data transmission rate from at least one weight set with elements of a plurality of orthogonal weight vectors, and transmits feedback information including the selected weight set and channel-by-channel state information to a transmitter. The transmitter demultiplexes data to be transmitted on a basis of the feedback information into at least one sub-data stream, multiplies each sub-data stream by an associated weight, and transmits the data.