Abstract: A method in a wireless communication terminal including receiving a signal comprising at least a Positioning Reference Signal (PRS) transmission from a serving cell and a PRS transmission from a neighbor cell, estimating a signal quality metric (SQM) based on the PRS transmission from the neighbor cell, estimating a time difference of arrival (TDOA) measurement for the neighbor cell based on the PRS transmissions, determining if the estimated SQM satisfies a criterion, and sending a report to the serving cell that includes at least the estimated TDOA if the criterion is satisfied.

Abstract: Systems and techniques for crosstalk estimation. One or more user devices feed back preceding matrix indicator rank information to one or more base stations, which generated channel state information reference sources, at least one of which includes weightings based on the preceding matrix indicator rank information. One or more user devices estimates channel information based on active preceding matrix indicator information received by the base station from at least one user device. One or more user devices computes channel estimates for a desired transmission channel and one or more other potential transmission channels associated with other user devices and performs crosstalk estimation for the estimated channels. Crosstalk estimation information is fed back to a base station, which performs scheduling based at least in part on the crosstalk estimation from the one or more user devices.

Abstract: A TCP transmission control device and a method of controlling a TCP transmission are provided that achieve greater efficiency of TCP transmission processes for applications that use intermittent transmission methods. A communication terminal includes a TSO control unit, which determines whether a TCP session open for data transmission is using a TCP segment link transmission process. The communication terminal also includes a link management unit, which manages all information consisting of the session identifiers employed in TCP sessions, and link transmission processing usage information and maximum number of TCP segment links notified from the TSO control unit, on a per TCP session basis.

Abstract: Techniques are provided for transmitting a plurality of Fiber-Channel packets in an FC network. A reliability protocol header comprising reliability attributes and FC attributes are prepended to the FC packets prior to their transmission for each packet in an exchange block comprising a plurality of FC packets. The FC packets are transmitted with the reliability protocol header across the FC network for delivery to a destination device.

Abstract: Provided is an apparatus and method for allocating time slots to nodes without contention in a wireless network. The method for allotting time slots includes: receiveing a packet length and maximum allowable latencies of the nodes and converting them into data in symbol units; determining a beacon order so that a beacon interval representing a length of a superframe is smaller than or equal to a minimum value of the converted maximum allowable latencies; determining a superframe order so that the sum of a length of a beacon frame, a length of a contention access period, and a length of contention free period is smaller than a length of an active portion, based on the converted packet length; and allocating a guaranteed time slot without contention to each node according to an allocation priority order for the nodes.

Abstract: An embodiment herein provides a method to mitigate effects of inter-cell interference in cellular communications, thereby maximizing SINR of a cellular device, due to a serving base station selecting a transmission strategy which places the signal strength (average and instantaneous) of the cellular device utilizing the base station in its in-phase region and inverse of interference signal strength (average and instantaneous) received by the cellular device from interfering base stations in their out-of phase region.

Abstract: A preconditioned air unit (10) for supplying preconditioned air to an aircraft parked on the ground, the preconditioned air unit comprising a main unit with a housing (12) accommodating a flow duct (20) with an air inlet (22) for ambient air and an air outlet (25) for connection to the parked aircraft, a blower (30) connected with the flow duct for generation of an air flow from the air inlet toward the air outlet, and a plurality of compartments (34), each of which is configured for accommodation of a self-contained cooling module comprising at least one refrigeration system, each of which includes at least one compressor (38), at least one condenser (40), at least one expansion valve (42), and at least one evaporator (44) connected in a flow circuit containing a refrigerant, and wherein each compartment is further configured so that the at least one evaporator interacts with the air flow in the flow duct when the self-contained cooling module is installed in the compartment, and wherein at least one self-co

Abstract: Systems and methods are disclosed which provide wireless communication systems implementing subsystems adapted for flexible deployment configurations and to resist the introduction of interference. Preferred embodiments of the present invention provide a wireless communication system configuration in which an ODU subsystem is coupled to an IDU subsystem using a fiber optic link. According to a preferred embodiment of the present invention, an ODU subsystem is adapted to provide conversion between digital and analog to thereby facilitate the use of a digital link between the ODU subsystem and a corresponding IDU subsystem. Embodiments of the present invention utilize a plurality of ODU subsystems configured according to the present invention to provide wireless communication coverage of a service area, such as to provide a wireless application termination system (WATS) hub for use in providing wireless communication links with respect to a plurality of subscriber units.

Abstract: A system and method for determining a state of a communications system. A determination is made whether a communications path is fully functional, impaired, or non functional. A maximum capacity available to the communications path is determined in response to determining the communications path is impaired. The communications path is limited to a maximum capacity available in response to determining the maximum capacity of the connection as impaired.

Abstract: A method and apparatus for interrupting the lower priority packet transmission/reception for higher priority packer transmission reception within the context of a common RLC entity is provided herein. The transmission/reception of lower priority data blocks containing data segments of a first higher layer packet is interrupted to transmit/receive higher priority data blocks containing data segments of a second higher layer packet. After the transmission/reception of a final segment of the second higher layer packet, the transmission/reception of the first higher layer packet is resumed. In some embodiments, a final segment of the second higher layer packet is encapsulated in a final higher priority data block with a remaining data segment of the first higher layer packet. The final higher priority data block further includes a transition indicator to indicate a transition from the second higher layer packet back to the first higher layer packet.

Abstract: When wireless systems are in communication with each other, transmit power levels can vary based on a distance between the communicating wireless systems. The transmit power levels may be varied by taking into consideration optimal values of performance indicators such as SNR. However, because a transmitting wireless system typically does not receive information that describes a communication channel as seen by a receiving wireless system, the transmitting wireless system may not be able to accurately determine when, whether, and by how much to reduce the transmit power without impairing signal reception ability at the receiving wireless system. Functionality can be implemented on the transmitting wireless system to vary the transmit power level based on comparing a percentage of packets transmitted at a maximum packet transmit rate with one or more thresholds. Such a variation of the transmit power levels can help reduce power consumption and ensure performance is not compromised.

Abstract: Techniques to configure quality of service (QoS) for communication are described. An access terminal configures a first QoS profile prior to a call. This QoS profile is for a set of QoS parameters that provides certain QoS. The access terminal thereafter establishes (e.g., originates or terminates) a call with an access network. If the first QoS profile is appropriate for the call, then QoS is not reconfigured. However, the access terminal may determine that a second QoS profile is to be used for the call, e.g., based on a format or a rate set supported by a remote/other terminal for the call. The access terminal would then configure the second QoS profile during the call. The access terminal may exchange data in accordance with (a) the first QoS profile before the second QoS profile is configured and activated and (b) the second QoS profile after it is configured and activated.

Abstract: An apparatus for providing wireless coverage to a plurality of sectors includes means for generating a reference sequence, and means for applying a time domain orthogonal sequence to the reference sequence to generate a reference signal for broadcasting over one of the sectors. An apparatus for wireless communications within a sector includes means for receiving a broadcast within a sector, the received broadcast comprising a reference signal having a time domain orthogonal sequence applied to a reference sequence, and means for recovering the reference sequence from the received broadcast.

Abstract: An information processing apparatus is provided which includes a transmission unit for transmitting a query request for querying another device for a count value held by such other device, a reception unit for receiving a return of the count value from such other device, a correction unit for performing, at a predetermined period, correction processing for synchronizing sampling frequency with such other device based on the received count value, and a reproduction unit for reproducing content in synchronization with such other device based on the sampling frequency. The correction unit corrects by taking into account a Round Trip Time between the transmission of the query request and the reception of the return and residual difference occurred at a previous correction time.

Abstract: An exemplary method includes an interface device 1) detecting a request provided by a user device for a server to transmit data to the user device by way of a base station and a wireless network that connects the user device to the base station, 2) pre-fetching, in response to the request, the data from the server, 3) transmitting the pre-fetched data to the base station for forwarding by the base station to the user device by way of the wireless network, 4) dynamically receiving, as the interface system transmits the pre-fetched data to the base station, queue occupancy information from the base station, and 5) using the queue occupancy information to perform flow control with respect to the transmission of the pre-fetched data by the interface system to the base station. Corresponding methods and systems are also disclosed.

Abstract: Methods and apparatus for data synchronization in communication systems using repetitive preamble patterns. In one embodiment, a method includes receiving a signal, where the received signal includes a data unit. The data unit includes a preamble symbol, and the preamble symbol has a start time and includes Q portions, each having the same pattern. The method further includes determining multiple possible values of a frame timing (FT). The method further includes determining multiple correlation functions including at least one correlation function corresponding to each of the multiple possible values of the FT, such that a given correlation function corresponding to a given possible value of the FT represents a correlation between data in two non-adjacent portions of the Q portions associated with the given FT. The method further includes selecting one of the multiple possible values of the FT based at least in part on the multiple determined correlation functions.

Abstract: A method performed by network devices that includes operating in a normal mode, where the network devices form a virtual chassis that corresponds to a single logical network device; detecting when a failure within the virtual chassis occurs; executing a splitting process to form one or more new virtual chassis in correspondence to the failure; determining whether one of the one or more new virtual chassis operates as a functioning virtual chassis based on whether at least one of a set of criteria is satisfied, where the functioning virtual chassis operates according to resources configured for the virtual chassis; and operating as a nonfunctioning virtual chassis when it is determined that the one of the one or more virtual chassis does not satisfy the at least one of the set of criteria, where the nonfunctioning virtual chassis operates in a pass-through mode.

Abstract: A method of wireless communication includes determining whether a serving cell signal strength is below a first threshold. The method also includes determining whether an inter/intra frequency neighbor cell signal strength is below a second threshold. The method further includes determining whether a number of idle traffic time slots for inter-radio access technology IRAT measurements is less than a third threshold. Finally, a frequency of IRAT measurements in time slot zero (TS0), a downlink pilot time slot (DwPTS), an uplink pilot time slot (UpPTS), and a gap (GP) is increased. The increase is based on the determined serving cell signal strength, the determined inter/intra frequency neighbor cell signal strength, and the determined number of idle traffic time slots.

Abstract: A method measures a resident delay for each port in a node in a network and a peer delay between each pair of neighbor nodes in the network. From these resident delays and peer delays, latency between each pair of neighbor nodes in the network is determined. The method includes weighting a route for a data packet going through the nodes in the network using the determined latencies. Each node includes a switch having switchable connections and is configured by a controller to send probe packets from an output port to a port in a neighbor node. The packet may include a time stamp and an identifier.

Abstract: A network device identifies an Open Shortest Path First (OSPF) link between the network device and a layer 2 network as one of a point-to-multipoint over broadcast interface or a point-to-multipoint over non-broadcast multi access (NBMA) interface, and performs database synchronization and neighbor discovery and maintenance using one of a broadcast model or a NBMA model. The network device also generates a link-state advertisement for the network device, where the link-state advertisement includes a separate link description for each point-to-point link within the layer 2 network; and sends the link-state advertisement to each fully adjacent neighbor in the layer 2 network.