Abstract: A method for multi-hop data transmission in an ad-hoc network comprising concealed nodes. A source node determines the probability of a collision-free transmission of data to the following nodes and if a high probability of collision-free transmission is present, transmits a data packet to a following node without coordinating transmission-channel allocation with concealed nodes disposed in the vicinity of the next node.

Abstract: The present invention relates to a system conducting multi-carrier communications between a base station and a plurality of mobile terminals. When a transmission format of an individual information channel transmitted from the base station to the mobile terminals is output over a control channel from the base station to the mobile terminals, the transmission is conducted over the control channel of the same chunk as the chunk used in the individual information channel.

Abstract: Methods are described for handling an incoming call at a mobile switching center when the mobile station is currently in either an access state (in the process of making an outgoing call) or in a paging state (in the process of receiving an earlier incoming call). The mobile switching center waits until the mobile station transitions out of the access state or paging state into a traffic state. The mobile switching center sends an alert message to the mobile station alerting the user of the new incoming call. The mobile switching center handles the incoming call per a response to the alert message. One option would be to send the new incoming call to the user and drop the other incoming call (or the outgoing call). Another option would be to direct the incoming call to voice mail. In either case, the handling of the incoming call is per the user's direction, i.e., as dictated by the response message.

Abstract: Disclosed is a method for a femtocell to reduce interference with an overlapping macrocell. The femtocell determines soft-frequency-reuse (“SFR”) information of the macrocell. From that information, the femtocell determines which frequency sub-channels are assigned by the macrocell for its cell-center users and which frequency sub-channels are assigned for cell-edge users. (Cell-edge users are given a higher transmission power profile in order to overcome potential interference with neighboring macrocells.) Then, the femtocell selects from the cell-center user frequency sub-channels for transmission to the femtocell's users. By transmitting on the cell-center user frequency sub-channels, the femtocell reduces interference with the overlapping macrocell. The femtocell continues to update its knowledge of the macrocell's SFR information and re-assigns frequency sub-channels as the SFR changes.

Abstract: Embodiments provide methods, apparatuses, and systems for efficient control signaling over shared communication channels with wide dynamic range. Some embodiments includes a gateway configured to encode and to transmit multiple physical layer headers, including a first physical layer header and a second physical layer header. The first physical layer header may span a first length and represent a first modcode; the second physical layer header may span a second length and represent a second modcode. The second length may be longer than the first length. Embodiments may include multiple terminals in wireless communication with the gateway via satellite, including a first terminal configured to decode the first physical layer header and to determine the first modcode. Embodiments may include a second terminal configured to decode the second physical layer header and determine the second modcode.

Abstract: A method of operating synchronous Hybrid Automatic Repeat Request (HARQ) between a transmitting station and a receiving station in a Time-Division Duplex (TDD) communication system includes configuring, at the transmitting station, a plurality of HARQ processes; transmitting data packets to the receiving station using the plurality of HARQ processes, wherein the data packets do not include HARQ process identification information; receiving, from the receiving station, a plurality of HARQ feedback packets indicative of whether the data packets were correctly received at the receiving station, wherein the plurality of HARQ feedback packets do not include HARQ process identification information and wherein the plurality of HARQ feedback packets are received in a downlink slot; and mapping, by the transmitting station, the plurality of HARQ feedback packets to the plurality of HARQ processes.

Abstract: A method, apparatus and computer product for scheduling in a cellular system using a wired RS is disclosed. In one aspect, a BS collects CQIs of all MSs within a cell, calculates a transmittable data amount for each of the MSs according to the CQI, selects an MS having a highest PF metric, and allocates resources to the selected MS.

Abstract: An information processing apparatus includes a storage unit including plural memory banks, a wireless communication unit for executing the wireless communication process, a communication quality information storage unit for storing the communication quality information indicating the communication quality of the wireless communication unit in the case where one of the plural memory banks is used, a memory bank selection unit for selecting the memory bank based on the communication quality information stored in the communication quality information storage unit in the case where the wireless communication process is executed by the wireless communication unit, and a memory bank switching unit for switching to the memory bank selected by the memory bank selection unit.

Abstract: A relay device receives transfer data from a transfer-source terminal and transfers the received transfer data to a transfer-destination terminal via relaying performed by another relay device. When the transfer data is received, the relay device establishes a direct communication with the other relay device, if information regarding the other relay device is attached to the received transfer data. If information regarding the other relay device is not attached, then the relay device attaches information regarding itself to the transfer data and transfers the resulting transfer data to a wireless control station.

Abstract: A system for determining a Home Zone service availability within a cell in a cellular communications network, wherein users of said cell comprise Home Zone users for whom services are provided at special Home Zone subscription rates when the user is in the cell, and non-Home Zone users. The system comprises measuring means for measuring total usage within the cell, and determining means for determining from said measurements and one or more Home Zone user usage profiles whether a further Home Zone user can be added to the cell.

Abstract: Embodiments of methods and apparatus for providing downlink channel parameters determination for downlink channels associated with a multiple-input-multiple-output (MIMO) system are generally described herein. Other embodiments may be described and claimed.

Abstract: There is described a method for allocating bandwidth in a satellite communication system comprising a plurality of terminals, the method comprising: at each one of the plurality of terminals: sending a local terminal bandwidth request to a centralized bandwidth manager and to all other terminals of the plurality of terminals via a satellite; receiving a centralized bandwidth allocation for a first group of applications from the centralized bandwidth manager; receiving other terminal bandwidth requests from the other terminals, extracting requests for a second group of applications, and generating a decentralized bandwidth allocation according to a set of bandwidth allocation rules common to all of the plurality of terminals; and generating a global bandwidth allocation using the centralized bandwidth allocation and the decentralized bandwidth allocation.

Abstract: In one aspect, a method includes scheduling network communications in a network comprising nodes connected by links, receiving at a first node updated bandwidth values from the other nodes, determining a cluster coefficient based on a number of one-hop neighbors of the first node and a number of neighbors N-hops and less of the first node, adjusting the cluster coefficient to form an adjusted cluster coefficient and determining a wait period based on the adjusted cluster coefficient. The method also includes implementing the updated bandwidth values received to determine updated node weight values of the other nodes after the wait period has expired.

Abstract: The invention concerns a method for performing a scheduling algorithm in a scheduler (120) of a wireless communication system, comprising the steps of obtaining from a communication unit (200) a minimum resource parameter, wherein said minimum resource parameter indicates a minimum of resources allocated to the communication unit in a scheduling frame to meet a resource constraint and scheduling allocation units for radio access to the communication unit in a scheduling frame in accordance with the minimum resource parameter.

Abstract: A method of operating a communication network having multiple stations, each able to transmit and receive data, so that the network can transmit a message from an originating station to a destination station via at least one opportunistically selected intermediate station. Stations wishing to transmit data transmit probe signals which are responded to by other stations, thereby to identify available stations. When a station has data to send, it transmits probe signals with Request to Send messages, identifying the data to be sent. When a station receives such data for onward transmission, it transmits its own probe signals with a Request to Send message and including identification information relating to the data. The Request to Send messages are received by other stations in the vicinity, so that they serve as an implied acknowledgement of the receipt of the data by the forwarding station without the need for sending explicit confirmation.

Abstract: Methods and apparatus related to partitioning traffic segments are described. An access router, having concurrent connections with two access terminals, each desiring to transmit traffic signals to the access router in the same traffic segment, partitions a traffic segment. The partition is such that a first portion of the traffic segment is allocated to a first access terminal and a second portion of the traffic segment is allocated to the second access terminal. Control information, e.g., conveying partition information, is communicated to access terminals prior to the traffic segment. In some embodiments, the partition information is communicated as part of a transmission request response signal, e.g., via phase of the request response signal. An access terminal which has been allocated a traffic segment partition portion identifies is allocation from the transmitted control information, and subsequently transmits traffic signals to the access router in its allocated portion of the traffic segment.

Abstract: A system and a method in a wireless network utilizing session initiation protocol (SIP) for call control. The SIP payload (SDP) contains a list of available transcoders (codecs) to coordinate transcoder selection to allow for the minimization of transcoders. An additional aspect of the embodiment of the present invention includes a serving MSCe that is operable to determine whether to initiate ringback to the calling party. If ring back is to be initiated, ringback can be initiated from the serving MSCe or from a network element supporting the calling party. The call negotiation process according to the described embodiment of the invention eliminates the requirement for any transcoding in specific situations to result in the number of transcoders used in the voice bearer path to be reduced to 0 (TrFO, Transcoder Free Operation) or to 1 (RTO, remote transmitter operation).

Abstract: A relay station, a transmission method, and a tangible machine-readable medium thereof for use in a multi-hop network are provided. The relay station comprises a receiving module, a decoding module, and a transmission module. The receiving module is configured to receive a frame, the frame comprising an extended information element corresponding to the relay station. The decoding module is configured to decode the extended information element to derive at least one message. The transmission module is configured to transmit a burst according to the at least one message.

Abstract: Methods to improve the efficiency of satellite transmission by coordinating the use of corresponding channels on adjacent satellites. Improvements over the current state of the art range from 130% to 1000%, yielding in the best case full utilization of potential bandwidth.

Abstract: A cellular communications system includes a base station and a plurality of user devices, wherein each user device is operable to communicate with the base station over a communication channel having a plurality of frequency resources, wherein the base station is operable: i) to provide each user device with a respective initial allocation of the frequency resources; and ii) to provide at least one user device with a periodic communications opportunity in which the user device can communicate with the base station, wherein each user device is operable to apply a frequency shift to its initially allocated frequency resource in accordance with a frequency hopping sequence, wherein the user devices use the same frequency hopping sequence and are synchronized with each other so that, at any point in time, a common frequency shift is applied by the user devices.

Abstract: A method is provided to control scheduling of transmission and reception by a TDMA radio. This method allows individual transmissions and receptions to be independently configured for different frequencies, coding rates, modulation schemes, in fact anything which the radio modem allows to be configured. In addition, this scheduling and configuration may be configured and reconfigured in real time without disrupting radio operations.

Abstract: A system for the end-to-end delivery of digital television signals. In a preferred embodiment a digital television signal is: received from production equipment, typically in HD format at approximately 1.4 gigabits per second (Gbps); the received signal is transmitted to a venue point-of-presence; converted for transmission via a 270 Mbps local loop; transmitted to a fiber network point of presence/video service edge; packetized into TCP/IP packets in a video gateway; and routed to one or more destination addresses via the fiber network; received at one or more video service edge destinations; converted to a digital television format, typically SDI; and either transmitted via a second 270 Mbps local loop for delivery to a customer site and subsequent conversion to a 1.4 Gbps HD signal, or converted directly to a 1.4 Gbs HD signal at the receiving video service edge.

Abstract: A communications system is described in which user devices communicate with an associated base station. The user devices employ frequency hopping techniques to provide frequency diversity in their communications with the base station. Techniques are described for reducing collisions between the communications from the different user devices and for the efficient signalling of data defining the frequency hopping sequence to use. The inventions are particularly suitable for use in the uplink of the E-UTRA communications scheme.

Abstract: Use of multi-user detection (MUD) with a frequency-multiplexed satellite return link (scheduling algorithms, etc) is described. The satellite return link may utilize multi-frequency time division multiple access (MF-TDMA). The satellite return link may include a plurality of return sub-channels, wherein one or more of the return sub-channels may operate in a contention mode during some time periods and a non-contention mode at different time periods.

Abstract: There is provided a base station device for suppressing increase of current consumption at a communication terminal by a line quality information report used for resource allocation of a downstream line and increase of interference of the upstream line traffic. The base station device reports whether a terminal performing communication which may be delayed, to each communication terminal (ST301). When the communication terminal has received a report that it is a terminal performing communication whose delay is not permitted, it reports the line quality information all the report timings (ST302, ST307, ST310). On the other hand, when the terminal is decided to be a terminal performing communication which may be delayed, it reports line quality information on an preferable average line quality sub-carrier group once a predetermined report timing (ST303).

Abstract: A method for allocating distributed Medium Access Control (MAC) resources in a Wireless Personal Area Network (WPAN) includes calculating an acknowledgement overhead; calculating a Medium Access Slot (MAS) overhead depending on a payload length of a frame; calculating a transfer rate; calculating a number of frame bits to be transmitted; and calculating a first number of MASs. Thereby, the method optimized a final number of MASs required per superframe. Further, a distributed MAC resource allocation apparatus includes a MAC client for determining a resource allocation scheme and an amount of resources, and for sending a request to a MAC resource management unit; a MAC physical layer for providing a received power level or the like to the MAC resource management unit; and the MAC resource management unit for determining a payload length or the like and for allocating wireless resources to devices connected to the WPAN.

Abstract: Disclosed herein is a system and method for downlink beamforming that takes into account imperfect channel state information (CSI) at the transmitter when determining the steering vector used in the beamforming process. The steering vector is calculated to increase the ratio of the average power of a desired signal component to the sum of the interference power of other wireless terminals, referred to as the signal-to-leakage ratio. By accounting for imperfect CSI when calculating the steering vector, the bit-error rate for a given signal-to-noise ratio is decreased. Also disclosed is a power allocation method that improves performance of the system by increasing the signal-to-interference-plus-noise ratio for all of the wireless terminals currently communicating with the base station. The power allocation similarly decreases the bit-error rate for a given signal-to-noise ratio, especially at high signal-to-noise ratios.

Abstract: A system and method of wireless data communication over a network of devices and device types are disclosed. In one aspect, the beacons of a first device type are sent and received from devices of the first device type or a second device type, by a first device of the first device type. A plurality of beacons of the first device type or the second device type are sent or received from a plurality of devices of the first device type or a second device type, by a second device of the second device type. Each of channels by the first device is sensed. A free channel for data communication between the first device and the second device is located. Beacons of the first device type are sent out by the first device. Channel reservations of time blocks are made of the free channel for data transmissions.

Abstract: A method for reserving resources in a packet communication network, preferably an IP protocol network. The method includes sending an active packet containing a request for reservation of resources for an active data flow, receiving the packet by an active node in the network, and reserving resources of the node according to the request. In this method, an active packet communication network node, in particular an IP active router, reserves resources for processing data of an active data flow according to a resource reservation request for this active data flow contained in this active packet received by the node.

Abstract: Connection ID (CID) assignment in multi-hop relay system can be used to perform routing. Using CID assignment as routing information in a multi-hop wireless relay system to maintain the routing structure is disclosed. In a CID cache scheme, a base station builds a CID cache based on the upstream packet and broadcasts the CID cache to a relay station. The CID cache comprises CIDs along with routing information. Based on CID cache the spanning tree of the routing can be reconstructed. A hierarchical CID assignment is disclosed wherein a base station assigns a range of CIDs to a relay station. A relay station can recognize its data packets and forward them to corresponding mobile stations. Maintaining routing automatically along with CID assignment is also disclosed.

Abstract: The present invention relates to a resource allocation requesting method and a packet scheduling method for uplink packet traffic in a mobile communication system, and an apparatus of the packet scheduling method. For efficient scheduling for the uplink traffic, scheduling is performed according to characteristics of traffic between a base station and user equipment (UE). Particularly, when the traffic generates a variable size packet on a periodic basis, the traffic is classified into first traffic that generates a completely variable size packet on a periodic basis and second traffic that generates a quasi-variable size packet on a periodic basis. In addition, the UE requests resource allocation in a different form from the base station depending on the type of traffic, and the base station performs scheduling according to the resource allocation request.

Abstract: The present invention relates to a system and method for dynamic allocation of a resource. In particular, it concerns a system to dynamically designate a priority for a resource request and to allocate a resource, partially filling or completely filling the request. Partial filling of requests and conditional priorities allows maximum use of resources at low priority while protecting minimum access to resources Thus, the system and method of the present invention improve access and optimization of a Bandwidth On Demand (BOD) satellite communication system. Free resources are used as access channelsthat may be allocated to a user.

Abstract: Techniques to support operation in a compressed mode and/or a continuous packet connectivity (CPC) mode are described. In an aspect, a user equipment (UE) may obtain an assignment of enabled subframes for the CPC mode and an assignment of transmission gaps for the compressed mode. The transmission gaps may be aligned with idle times between the enabled subframes. The UE may exchange data during enabled subframes not overlapping the transmission gaps and may skip data exchanges during enabled subframes overlapping the transmission gaps. The UE may make cell measurements during the transmission gaps. In another aspect, the UE may obtain enabled subframes and skipped subframes, exchange data during enabled subframes not corresponding to the skipped subframes, and skip data exchanges during the skipped subframes. In yet another aspect, the UE may receive orders on a shared control channel to quickly enable and disable the compressed mode.

Abstract: The present invention concerns a method for determining if a handover of a first half-duplex terminal has to be executed from a first to a second base station. The first base station: transfers signal in the cell of the first base station, receiving a message transferred by the first half-duplex terminal in response to the signal transferred by the first base station, the message comprising information relative to quality measurements on the signals transferred by the first and second base stations, receiving a message indicating if the idle period of the cell of the second base station is compatible with the round trip delay of the first half-duplex terminal in the cell of the second base station, determining if a handover of the first half-duplex terminal has to be executed according to the compatibility.

Abstract: A wireless communication method and apparatus for the same performs access control in the following manner, where an acquisition of a right to transmit is performed by CSMA access control method, and a collision of transmitted data packets among different communication apparatuses is prevented for facilitating a stable transmission of data packets from each of the apparatuses in a predetermined interval. The transmission of a data packet having a predetermined data length under a cyclical access control sets an access control start time at a time that is after a lapse of predetermined amount of time from the previous acquisition of the right to transmit. As a result, the competition of the right to transmit is resolved due to a different access control start time set for the next transmission.

Abstract: Methods, systems, and apparatus, for operation of concurrently coordinated microwave paths in coordinated frequency bands are described. In one aspect, a system includes a plurality of primary sites, each primary site including a transceiver portion configured to transmit to or receive from the transceiver portion of another primary site on a coordinated microwave path on a first frequency; a secondary site, the secondary site located in an optimized area, the secondary site including a transceiver portion, the transceiver portion of the secondary site configured to transmit to the transceiver portion of a primary site on a concurrently coordinated microwave path on the first frequency, where the optimized area is an area where interference caused by the secondary site to other transceivers that operate on a different coordinated microwave path on the first frequency is less than interference caused by a primary site to the other transceivers.

Abstract: A method for efficiently signaling resource assignment information to notify User Equipment (UE) of allocated resources in an Frequency Division Multiple Access mobile communication system is provided, in which a base station signals UE Identifications in the order of allocated resource blocks to UEs without explicitly notifying the positions of the allocated resource blocks, so that the UEs can find out resource blocks about which resource assignment information is not required, thereby reducing signaling overhead.

Abstract: Apparatus (48), and an associated method, for facilitating operation of a mobile node (12) operable in a communication system (10) to request allocation of communication capacity upon which to communicate data pursuant to a communication service. A channel allocation request generator (52) is selectably operable to generate requests for allocation of channel capacity upon which to communicate the data. A selector (54) selects when to cause the generator (52) to communicate the additional data packets. Selection is made to delay, or otherwise prevent, retransmission of requests, when a determination is made that the retransmission is unlikely to be successful.

Abstract: A method of scheduling an uplink (UL) data packet on a packet data network (PDN) connection of at least one radio bearer by a wireless communication unit comprises receiving, by the wireless communication unit, a signalling message comprising at least one scheduling priority parameter assigned to at least one uplink radio bearer, wherein the at least one scheduling priority parameter is based on at least one characteristic of the PDN connection that the radio bearer belongs to. The method further comprises determining, from the at least one scheduling priority parameter, at least one user transmission priority level associated with at least one PDN connection of at least one radio bearer; and scheduling at least one uplink data packet transmission in response to the at least one user transmission priority level.

Abstract: Methods and systems for allocating bandwidth and performing soft handoffs in multi-hop cellular communication networks are disclosed.

Abstract: A network selection scheme operable in a network environment having one or more radio access networks (RANs), one or more core networks (CNs), and one or more service networks (SNs). Upon obtaining identity information of a particular network combination, a wireless user equipment (UE) device is operable to register with a roaming broker (RB), whereby additional information may be provided to the device for facilitating appropriate network selection.

Abstract: A carrier sense relationship and an interference relationship between logical links in a shared, broadcast, medium network are determined. Bandwidth for each of the links is estimated based on the carrier sense relationship and the interference relationship.

Abstract: In a communication network (100), a method (400) of reserving X slots (610) for transmitting data from a source device (110A) to a destination device (110D) via multi-hop relay includes sending a first hop reservation request from the source device (110A) to a second device (110), for transmitting data from the source device to the destination device. The first hop reservation request identifies the source device, the destination device, and X proposed slots (610) to be reserved for the first hop. The source device then receives a first message, addressed to the source device from the second device, indicating that the first hop reservation request is pending and that the X slots proposed by the source device have been reserved by the second device. Later, the source device receives a subsequent message indicating whether a final hop reservation request has been accepted by the destination device.

Abstract: A distributed multi-channel TDMA MAC time slot and channel allocation algorithm for wireless networks is provided. The time slot and channel allocation includes a distributed allocation phase and an allocation adjustment phase. Each phase begins allocation at a first node and continues node-by-node until the last node in the network. The allocation then reflects back from the last node to the first node. At each node in the path, the node can initiate resource allocation between itself and its neighbor nodes. Nodes that are within range of the wireless network but are not on the path do not initiate resource allocation but instead participate in the resource allocation initiated from other nodes.

Abstract: A method, system and computer program product for the transmission of data from a transmitter to a receiver according to the standard universal mobile telecommunications system (UMTS standard). The present invention is directed to improving data transmission according to the UMTS standard. To this end, the transmission of data is accelerated, and an inband-signaling of information is carried out on an MAC-layer plane, wherein the information is particularly relevant to the UMTS base station (BS).

Abstract: Methods and systems for reconfiguring communications systems are provided. In one embodiment, a radio head interface for a communications system comprises: a first interface for communicating with a signal processing module digitally performing waveform processing to modulate and demodulate radio signals; a second interface for communicating with a radio head for transmitting and receiving wireless radio signals; a first buffer coupled to the first interface for receiving a page of data from the signal processing module, the page of data comprising a page header for communicating reconfiguration parameters and a plurality of digital radio frequency samples representing a modulated radio signal; at least one digital frequency converter coupled to the second interface; and a configuration management unit, the configuration management unit adapted to receive the reconfiguration parameters from the page header and reconfigure the at least one digital frequency converter based on the reconfiguration parameters.

Abstract: The quality of signals during SDMA is raised. In an uplink, a signal processing unit receives signals respectively from a plurality of terminal apparatuses which have been multiple-accessed by division of time. It derives receiving channel characteristics corresponding to the plurality of terminal apparatuses, respectively, for each time slot. In a downlink, the signal processing unit derives transmitting channel characteristics from the receiving channel characteristics derived and, based on the transmitting channel characteristics derived, it transmits signals respectively to the plurality of terminal apparatuses to which SDMA has been performed.

Abstract: A wireless communication apparatus includes: a channel setting portion that sets an working channel and an acquisition channel; a remainder obtaining portion that obtains a remaining time length that can be used to wirelessly communicate with the wireless communication apparatuses that form part of the same wireless network using the working channel; a remainder determination portion that determines if the remaining time length is equal to or less than a specified acquisition reference remaining number and equal to less than a specified change reference remaining number; and if the remainder determination portion determines that the remaining time length is equal to or less than the change reference remaining number, an acquisition portion acquires signals transmitted using the acquisition channel and the channel setting portion changes the working channel based on the signals that have been acquired by the acquisition portion.

Abstract: A system and method for dynamic traffic load balancing with a multiple physical layer modes of an air interface protocol architecture, the protocol architecture residing in a base station and/or an access network that includes a base station and access gateway that include distributed and centralized components of the air interface protocol architecture. The traffic load balancing supports various multiplexing scenarios for scheduling communication data under time division multiple access and frequency division multiple access techniques for use in the multi-carrier wireless network.

Abstract: An apparatus and a method for allocating a channel capable of minimizing interference between channels in a node on an Ad-hoc network using a plurality of wireless interfaces for communication are provided. The apparatus includes a receiving unit that receives information on channel allocation from neighboring nodes, a channel search unit that searches for channels through which the node can communicate with all the neighboring nodes with reference to the received information on channel allocation, and a channel allocation unit that allocates a channel to the wireless interfaces based on the result of the search, so that it is possible to improve efficiency of network bandwidth usage and decrease interference of the channels.