Abstract: Certain aspects of the present disclosure provide techniques and apparatus for using channel state information (CSI) feedback for multiuser multiple-input multiple-output (MU-MIMO) transmission. For certain aspects, a method of wireless communications generally includes generating a training frame and transmitting the generated training frame. The training frame typically includes first information identifying a group of one or more apparatuses and second information indicating whether each of the apparatuses in the group is to determine at least one characteristic of a channel. For other aspects, a method of wireless communications generally includes receiving a request at an apparatus and transmitting, in response to the received request, a packet using frame aggregation, wherein two or more frames are transmitted in a single transmission using a single header.

Abstract: Methods and systems for selectively processing VLAN traffic from different networks while allowing flexible VLAN identifier assignment are disclosed. According to one aspect, a layer 2 switch includes a virtual switch identifier data structure that associates a VLAN identifier extracted from a layer 2 frame and a port identifier corresponding to a port on which a frame is received with a virtual switch identifier. The virtual switch identifier is used to select a per-virtual-switch data structure, such as a forwarding table. The per-virtual-switch data structure is used to control processing of the layer 2 frame on a per-virtual-switch basis. The per-virtual-switch data structure may also be updated separately from the data structures assigned to other virtual switches.

Abstract: A system and method are disclosed herein for managing conference bridge communication sessions. The system and method involves receiving a plurality of calls containing user media from users into a conference bridge, then connecting the plurality of calls via a load balancer to a plurality of conference servers on a network. A master broker dynamically selects a master conference server from among the plurality of conference servers to which the calls are connected. Once the master conference server is selected, the master broker directs all other conference servers to bridge the user media for the calls that are connected to the master conference server. The master conference server receives the user media from each of the connected conference servers. The master conference server is able to organize and mix the various user media and return this mixed media to each of the connected conference servers and thereby back to each user.

Abstract: The present invention is designed to minimize the increase of user terminal power consumption even when downlink control channels are extended.

Abstract: A communication system is provide which includes a plurality of communication units connected to a communication line, in which collisions occur between dominant signals outputted from the communication units on the communication line. At least one of the communication units includes a first driver which is set so that a variation of voltage applied to the communication line in transmission of the dominant signal with respect to that in absence of transmission of the dominant signal is smaller than a variation of voltage applied from another of the communication units to the communication line in transmission of the dominant signal. One of the communication units, which differs from the communication unit including the first driver, includes a second driver which limits variation per unit time of current flowing through the communication line in transmission of the dominant signal.

Abstract: Techniques for guard band utilization for wireless data communication are described. In at least some embodiments, guard bands can be leveraged to transmit wireless broadband data and/or other forms of wireless data. According to one or more embodiments, signal activity in a wireless channel that is adjacent to a guard band is monitored, e.g., while the guard band is being utilized for wireless data communication. In at least some implementations, if the signal activity exceeds a signal activity threshold, usage of the guard band channel can be adjusted to mitigate interference with signal activity in an adjacent channel.

Abstract: A system and method for handling packets includes receiving the packets at a layer 3 handler in a network device, determining whether the packets are diagnostic packets by examining bit patterns of the packets, determining whether an application in the network device can handle the diagnostic packets when the packets are the diagnostic packets, delivering the diagnostic packets to the application for handling when the application in the network device can handle the diagnostic packets, receiving response packets from the application, and transmitting the response packets. In some embodiments, the bit patterns include a reserved bit of an IP header that is set to one when the packets are the diagnostic packets. In some embodiments, application packets and the diagnostic packets include a same source IP address, a same destination IP address, a same source port, and a same destination port.

Abstract: Provided is a synchronization establishment method capable of reducing the time required to establish synchronization in a slave station without putting an unnecessary load on a master station. In the synchronization establishment method, a one-second cycle of a message is divided into 100 time slots including slot “0” to slot “99”; ten slots including slot “90” to slot “99” as some of the slots are allocated to a fast synchronization establishment mode; and, in the fast synchronization establishment mode, messages such as Sync2, Delay_Req, and Delay_Resp are transmitted and received between the master station and the slave station so that the slave station establishes synchronization.

Abstract: A method assigns backhaul links in a cooperative wireless network including a control unit (CU) connected to a set of access points (APs) by a set of backhaul links, and wherein the APs are connected to an end user by wireless channels. A reliability of each backhaul link is determined to produce a set of reliabilities. A distance between each AP and the end user is determined to produce a set of distances. Using the set of reliabilities and the set of distances, probabilities of successful reception of a message transmitted from the CU to the end user via the backhaul links and the wireless channels are determined. Then, the backhaul links are assigned according to the probabilities of successful reception of the message by the end user.

Abstract: A system located on either side of a wireless network for reducing the amount of collisions in the wireless network comprises a TCP server in communication with a TCP client using TCP protocols that use client acknowledgements, and an acknowledgement-summarizing device adapted to summarize at least one client acknowledgement from the TCP protocols in a summarizing acknowledgement, and to transmit the summarizing acknowledgement into the wireless network. The acknowledgement-summarizing device may be replaced or combined with an acknowledgement-aggregating device located on either side of the wireless network and adapted to aggregate one or more client acknowledgements from the TCP protocols into an encoded packet and to transmit the encoded packet into the wireless network.

Abstract: Provided are a method, a system, and a computer program product in which a plurality of switches are maintained in a cascaded configuration. A switch relays a switch fabric internal link services (SW-ILS) to generate a pair of exchanges comprising a first exchange and a second exchange at the switch. In response to a termination of the first exchange of the pair of exchanges, the second exchange of the pair of exchanges is terminated.

Abstract: Apparatus and methods for reducing latency in coordinated networks are provided. The apparatus and methods relate to a protocol that may be referred to as the Persistent Reservation Request (“p-RR”), which may be viewed as a type of RR (reservation request). p-RR's may reduce latency, on average, to one MAP cycle or less. A p-RR may be used to facilitate Ethernet audiovisual bridging. Apparatus and methods of the invention may be used in connection with coaxial cable based networks that serve as a backbone for a managed network, which may interface with a package switched network.

Abstract: A method and system for providing configuration parameters to TDMA nodes are disclosed. The configuration parameters are repeatedly transmitted to the TDMA nodes in a predetermined fashion, allowing existing nodes to receive the up-to-date configuration parameters from messages being broadcast in the TDMA network. Any new node joining the TDMA network may also receive the up-to-date configuration parameters, allowing the new node to apply such parameters accordingly and join the network as applicable.

Abstract: The present invention provides methods and apparatus for selectively notifying user equipments (UEs) of updated access barring statuses and for spreading access attempts by the UEs. The methods and apparatus disclosed in the present application reduce potential overloads in a radio access network caused by UEs simultaneously accessing the radio network, after being notified that access restrictions have been removed.

Abstract: An apparatus and method are provided for transmitting Hybrid Automatic Repeat reQuest ACKnowledgment (HARQ-ACK) feedback information by a User Equipment (UE) in a wireless communication system, when Component Carriers (CCs) configured for the UE include a Frequency Division Duplexing (FDD) CC and a Time Division Duplexing (TDD) CC. The method includes determining a HARQ-ACK timing and a CC for transmitting the HARQ-ACK feedback information, based on a composition structure of the CCs configured for the UE, and transmitting the HARQ-ACK feedback information on a Physical Uplink Control CHannel (PUCCH) or a Physical Uplink Shared CHannel (PUSCH) of the determined CC, based on the determined HARQ-ACK timing.

Abstract: Power control methods are provided. The power control method, performed by a receiving end device, includes receiving two consecutive slots from a dedicated physical channel (DPCH), determining a transmit power control command based on signal qualities of the two consecutive slots; and transmitting the transmit power control command in only a first transmit power control field that is firstly available after the transmit power control command is determined.

Abstract: A method and apparatus for transmitting an uplink signal in a wireless communication system are disclosed.

Abstract: Provided are a method and apparatus for transmitting data in a wireless communication system. The method comprises the steps of: setting up a frame including both a control domain for transmitting scheduling information to a first terminal and a data domain for transmitting first data to the first terminal; and transmitting, to a second terminal, second data in the control domain. The frame comprises a plurality of orthogonal frequency division multiplexing (OFDM) symbols in a time domain. The control domain consists of a first number N (where N is any natural number equal to or less than 4) of OFDM symbols in the frame. The data domain consists of OFDM symbols other than a number N of OFDM symbols in the frame. The second data has a predetermined bit size.

Abstract: A communication system includes a radio transmission apparatus that terminates a radio communication line, a radio transmission apparatus that terminates a radio communication line, and a line control apparatus that performs data communication with the radio transmission apparatuses. The radio transmission apparatuses and monitor the line states of the radio communication lines and notify the line control apparatus of the line states. The line control apparatus controls data to be output to the radio transmission apparatuses and according to the line states.

Abstract: A system for hiding an internal topology of a network having plurality of client and server entities is provided herein. The system comprises a topology hiding node that coordinates communication between systems in two distinct networks: Home Public Land Mobile and Visited Public Land Mobile. The topology hiding node includes long term storage and a short term storage which includes a change list. A real identity of one system entity is represented by at least one virtual identity allocated from a group of at least two virtual identities, when communicating with the other system entities, and the relation between the virtual identities and the real identities of a current communication session is recorded in the change list and stored in short term storage and the relation between the virtual identities and the real identities of a previous communication sessions is stored in the long term storage.