Abstract: A method for a device to communicate in one operational mode over a wireless network uses any suitable media access control mechanism for periodically communicating scheduled data transmission information between nodes. Scheduled data is then periodically transmitted according to the scheduled data transmission information and neighbor scheduled data is periodically listened for according to the neighbor scheduled data transmission information. Finally, the device is otherwise allowed to enter in a different operational mode.

Abstract: A signal is transmitted in a communication network system, in particular a mobile communication network system, from a user equipment, in particular a mobile user equipment, to a base station, which signal includes an information about the kind of a message intended to be transmitted from said user equipment to said base station, wherein said information must be acknowledged by said base station as a condition for transmitting said message from said user equipment to said base station.

Abstract: A method and system for reducing latency by anticipating responsive data communications is described. When the user of a first mobile station receives a message sent from a second mobile station, the user of the first mobile station may responsively reply. If, before the reply is sent, the second mobile station releases its network radio link and goes dormant, the reply may be delayed as the radio link is set up again after the reply is sent. To reduce this latency, the first mobile station may monitor its user's actions and, upon an indication that the user intends to soon reply to the earlier received message, the first mobile station may send a signal into the network which causes the second mobile station to maintain its radio link or to set up a new radio link if it has gone dormant.

Abstract: Techniques for use in contending for a portion of a television channel spectrum are disclosed. In some instances, a back-off value is used to decide whether a contender's contention number will be transmitted when the contention channel is free, and the back-off value is determined based on the contention number. In some instances, a contender monitors the contention channel and withdraws from contention if it detects from the contention channel that a higher priority contender is in contention.

Abstract: A method of enhancing security in a wireless mesh communication network operating in a process control environment and including a plurality of wireless network devices includes processing a join request from a wireless device wishing to join the wireless mesh communication network, providing a limited network functionality to the wireless device if the join request is granted, requesting a complete approval of the wireless device; and granting a full network functionality to the wireless device if the complete approval of the wireless device is received.

Abstract: The present invention provides a system (600), device (500) and method (400) for automatic partner selection in an existing Cooperative MAC (CMAC) protocol, which uses the Ready-to-Send (RTS), Clear-to-Send (CTS) and Partner-Clear-to-Send (PCTS) handshaking to establish cooperation. The present invention enables a “best” partner/relay (500.R.k) who is also willing to cooperate to relay information to a destination (500.D.J) for the transmitting device (i.e., the source), without the source (500.S.i) making a decision on partner selection. That is, the present invention provides a new mechanism by which the best partner/relay (500.R.k) that is also willing to cooperate will “step in” automatically without the source's involvement in selection of the partner/relay (500.R.k). This mechanism is contention-based and the partner is “selected” using local information only in a fully distributed manner.

Abstract: Embodiments enable prioritization and selection of network access points (NAP) by a computing device using NAP attribute values. The computing device obtains the attribute values based on a location of the computing device and/or proximate NAPs detected by the computing device. The obtained attribute values are compared to a state of the computing device (e.g., sensor values), user preferences, or other criteria to select at least one of the NAPs for connection with the computing device. In some embodiments, a user of the computing device is presented with a list of Wi-Fi access points ranked according to relevance to the computing device and/or user.

Abstract: Systems and methods for coexistence of WLAN and Bluetooth networks are described. At least one embodiment includes a method for operating a wireless device in both a 802.11 network and a Bluetooth network. In accordance with some embodiments, the method comprises monitoring transmission of Synchronous Connection Oriented (SCO) slots over the Bluetooth network, informing an access point (AP) in the 802.11 network not to transmit to the device before the end of an SCO slot, transmitting a power save trigger to the AP to retrieve buffered data from the AP, and transmitting data to the AP.

Abstract: A data communication method and system for a mobile communication network includes an improved medium access control mechanism for improving QoS and power efficiency of network components while maintaining channelization effects. A data communication method for a wireless communication network includes a coordinator and at least one network node according to the present invention includes the steps of broadcasting, at the coordinator, a beacon frame for informing the at least one network node of a duration of a superframe; transmitting a Guaranteed Time Slot (GTS) from the coordinator to the at least one network node for allocating timeslots; and transmitting a data frame from the coordinator to the at least one wireless network through the timeslots allocated to the at least one wireless network node.

Abstract: A method for bus arbitration is for use when working with multi-carrier modulation methods. Each user on a bus is assigned a unique address which identifies the user and which is transmitted upon each initiation of communication. The address is represented as a sequence of binary numerals, the number of bits of the binary numerals being equal to the number of carriers used in the multi-carrier modulation method. This sequence of binary numerals is transmitted successively for the arbitration via the multi-carrier modulation method, a user being eliminated from the arbitration when a further user at the same time has transmitted a binary numeral having higher priority. The transmission of the binary numeral may be repeated if the arbitration of the numeral does not lead to a result in one step. The method for bus arbitration may be used advantageously in a system for contactless energy supply. A redundant sending of phase-shifted signals reduces the failure rate because of random destructive interference.

Abstract: Methods and apparatus for allocating traffic contention resource units in a wireless communications system in which decisions are made in a distributed manner are described. A wireless communications device, corresponding to a link, self allocates resource units for traffic contention. Decisions regarding initially acquiring resources, relinquishing acquired resources, and/or acquiring additional resources for traffic contention are based on detected levels of network congestion and/or detected changes in network congestion. A wireless communications device detects a level of network congestion and determines a number of resource units to acquire for traffic contention based on the detected level of network congestion.

Abstract: Methods and apparatus for implementing a robust unicast/broadcast/multicast protocol are provided. In one aspect, a method of avoiding collision of intra-basic service set unicast, broadcast or multicast transmissions notifies stations in the basic service set of a reserved transmit opportunity for a unicast, broadcast or multicast transmission. Transmissions from at least one station in the basic service set are deferred until after the reserved unicast, broadcast or multicast transmit opportunity.

Abstract: In a 60 Hz WGA wireless network, not all frames with the duration field are received by a STA in a WGA network because of directional antennas. Therefore, a NAV Timer cannot account for the reserved duration of the channel by only updating with the longest duration field received. A STA can receive two frames each with a source and destination addresses and update the NAV Timer by comparing the received addresses to overcome such problem. Further, a STA can receive one frame with a source and destination addresses and update the NAV Timer by comparing the received addresses with the NAVSRC and NAVDST values.

Abstract: Methods of providing multicast communications within a wireless communications network are provided. In an example, an access network forms a target sector group, the target sector group including at least one target sector from among a plurality of sectors, each target sector expected to have one or more access terminals belonging to a given multicast group. The access network also forms a supporting sector group, the supporting sector group including at least one supporting sector from among the plurality of sectors, each supporting sector not being a target sector and satisfying a proximity metric (e.g., being adjacent to one or more target sectors) with respect to at least one target sector. The access network transmits multicast messages associated with the given multicast group in the at least one target sector and the at least one supporting sector.

Abstract: A method for communication transmission includes the steps of: performing sub-frame transmission in accordance with a first communication standard and pausing sub-frame transmission in accordance with a second communication standard in a first communication period; performing a sub-frame uplink operation in accordance with the second communication standard and pausing a sub-frame uplink operation in accordance with the first communication standard in a second communication period; and performing a sub-frame downlink operation in accordance with the second communication standard and pausing a sub-frame downlink operation in accordance with the first communication standard in a third communication period. The transmission band of the first communication standard overlaps, at least partially, the transmission band of the second communication standard.

Abstract: Provided is a data transmission method of a plurality of sending nodes in a sensor network. In the data transmission method, data is generated to be transmitted to a receiving node, respectively. Headers of the generated data are transmitted to the receiving node, respectively, in response to a Wake-up Notification Message (WNM) from the receiving node. A Grant Notification Message (GNM) for selecting one of the plurality of sending nodes is received from the receiving node. The plurality of sending nodes transmit a payload of the generated data according to the GNM, or switch into sleep mode without data transmission.

Abstract: A method and apparatus are provided for transmitting a data frame using channel bonding in a wireless local area network in which high throughput (HT) stations and legacy systems coexist. The method includes adding a legacy format physical layer header including information, which indicates that a medium is being used while a frame exchange sequence is performed with respect to the HT format data frame, to the HT format data frame, transmitting the HT format data frame with the physical layer header by using channel bonding, and broadcasting the legacy format CF-End frame through a plurality of channels used in the channel bonding. Accordingly, after a frame exchange sequence is completed, the legacy stations which use channels used in the channel bonding can participate in a fair contention for medium access.

Abstract: A transmission opportunity setting method in a wireless LAN system using multiple channels includes: receiving a request-to-send (RTS) frame from a wireless station, the RTS frame including information on a wireless LAN mode of the wireless station; and transmitting a clear-to-send (CTS) frame to the wireless station according to at least one of the number of remaining available channels among the multiple channels and the wireless LAN mode of the wireless station.

Abstract: A mobile device transmits to a server a request for information regarding access points in a wireless network. In response to the request, the mobile device receives encoded access point identifiers for a plurality of access points. The encoded access point identifiers include a reference identifier that has a number of groups of bits. The encoded access point identifiers also include encoding masks for respective access point identifiers, wherein a respective encoding mask identifies groups of bits for the respective access point identifier that are identical to corresponding groups of bits for the reference identifier. The encoded access point identifiers further include, for the respective access point identifiers, groups of bits that are not identical to the corresponding groups of bits for the reference identifier. The mobile device decodes at least some of the encoded access point identifiers.

Abstract: Methods and apparatus related to peer to peer communication networks are described. A peer to peer timing structure is implemented which includes recurring peer discovery intervals and traffic intervals. Some embodiments further include recurring paging intervals for peer to peer pages. A wireless communications device, supporting peer to peer communications and storing information defining the timing structure, determines a time reference point, facilitating a coarse level of synchronization with respect to the timing structure. The time reference point is determined based on a broadcast signal received from a communications device, e.g., a satellite, base station, or beacon signal transmitter. Multiple peer to peer wireless communications devices in a local vicinity thus obtain the same basic understanding as to the current relative point in time with respect to a common recurring peer to peer timing structure.

Abstract: A system of a telecommunications network is provided. The system includes a processor configured to promote preventing a detachment of a user equipment (UE) from the network by preventing deactivation of at least one default bearer between the UE and the network when at least one bearer between the UE and the network is to be deactivated based on a quality of service parameter.

Abstract: A packet routing apparatus and method are provided. The packet routing apparatus may participate in a sensor network. In certain aspects the packet routing apparatus may snatch a request to send (RTS) signal that is transmitted from a first node to a second node in the sensor network and may intervene on the relay path of the snatched data packet. In certain aspects, the packet routing apparatus may sniff a data packet that is transmitted from a first node to a second node and may intervene on the relay path of the sniffed data packet.

Abstract: A method for accessing a wireless communication network includes transmitting a first message that has a first random identifier (RAND ID), and receiving a response to the first message such that the response includes the first RAND ID and signaling information. The method further includes transmitting a second message, having a second RAND ID, using at least one allocated resource. An alternative method includes communicating with a UE by receiving a first message from the UE. The first message includes a first RAND ID. The method further includes transmitting to the UE a response to the first message, and receiving a second message from the UE on at least one allocated resource. Typically, the response includes the first RAND ID and signaling information, and the second message comprises a second RAND ID.

Abstract: Performing distributed contention-free communication channel reservation for wireless communication, is disclosed. One implementation involves providing access to a shared communication channel in a wireless network including multiple wireless stations, by performing distributed channel time reservation for contention-free access to a shared wireless channel by each wireless station, based on a prior successful contention by the wireless station for access to the channel in a wireless network.

Abstract: In one aspect, a method for communicating with a wireless communication system through a wireless client includes associating a wireless client with a wireless communication system; at the wireless client, receiving one or more real time data packets transmitted from the wireless communication system, each real time data packet containing real time data; and sending an acknowledgement (ACK) packet for each real time data packet correctly received by the wireless client.

Abstract: A unified contention based protocol is implemented in which a source station within a basic service set selects the protection methodology for data transmission on the communication medium. Utilizing EDCA as a medium access method and maintaining that each transmission opportunity has multiple slots, the source station is provided with the opportunity to select a protection methodology based on the protection environment, which enables transmission opportunity protection without direct PCP involvement.

Abstract: A system for performing transmit power and admission control for a satellite based wireless communication systems. Admission control uses centralized admission and distributed admission controls. Centralized admission control uses a maximum persistence value broadcasted from a hub to terminals. Persistence is the probability that a transmission will timely occur. Each terminal transmits a persistence that is no greater than the maximum persistence value. If the transmission fails, the transmission is repeated using the same probability. Lowering the persistence introduces a delay for alleviating congestion. Power control is performed using centralized and distributed power control. Centralized power control uses power control commands transmitted from the hub to each terminal. When an acknowledge is not received, a backoff and recovery procedure is performed.

Abstract: Aspects of the present invention provide communication with a handset utilizing industry standard TCP/IP protocol. According to one aspect of the present invention, a handset includes a processor, web server program, and first virtual network adapter. The first virtual network adapter emulates a network adapter operative to provide network access to the handset. The handset includes a second virtual network adapter that emulates a second network adapter operative to provide network access to a computing device connected to the handset. Communication occurs over a private network established between the computing device and the handset using the TCP/IP protocol. A custom web page file stored on the handset and provided to the web browser program of the computing device renders a user-friendly web page interface.

Abstract: An apparatus and method to receive first service request signals and second service request signals from virtual signal queues, to map the virtual signal queues according to a first mapping, to arbitrate the first service request signals in accordance with the first mapping of the virtual signal queues, and to re-map the virtual signal queues according to a second mapping, different from the first mapping, to allow arbitrating of the second service request signals in accordance with the second mapping of the virtual signal queues.

Abstract: A system for signaling an application when a requested data rate and Quality of Service cannot be achieved using OFDM wireless data transmission, and the application proceeds by either renegotiating QoS and data rate, or waiting until they requested rate and QoS are met.

Abstract: The present invention includes a method for sharing a quantity of resources between several users in a telecommunication network or a computing system starting from a given date. The method includes updating a tree, each node of which represents a time period. The tree contains at least one node representing a time period including the given date. The concatenation of the time periods represented by daughter nodes of a parent node represent the time period represented by the parent node.

Abstract: In a system comprising a first access point serving a first wireless network; and a neighboring access point serving a neighboring wireless network having coverage overlapping with the first wireless network, where the first access point and the neighboring access point transmit beacon messages at beacon times that are temporally separated by predetermined beacon periods, a method of operating the system is disclosed, the method comprising: the first access point sending a first offer to the neighboring access point, the first offer offering a period of silent time to the neighboring access point during which period of silent time the first access point silences the first wireless network, the period of silent time being independent of the beacon times and the beacon periods.

Abstract: A base station calculates the number of terminals which have transmitted messages at ith frame, and calculates the number of messages to be transmitted at (i+1)th frame by using the number of terminals which have transmitted the messages in the ith frame. The base station calculates a transmission probability by using the number of messages to be transmitted in the (i+1)th frame and the number of random access slots, and transmits the number of messages to be transmitted in the (i+1)th frame and the transmission probability to the plurality of terminals. The base station receives a message transmitted by a pertinent terminal, whose number of messages to be transmitted in the (i+1)th frame is greater than the number of random access slots, among the plurality of terminals, according to the result obtained by comparing the transmission probability and a random number.

Abstract: Communicating between stations in a network is described. A plurality of stations coordinate according to a distributed protocol to select a first station to transmit over a shared medium. The communication includes transmitting between the first station and a second station over the shared medium during a time period in which stations other than the first and second stations refrain from transmitting over the shared medium. The first station transmits information that grants permission to the second station to transmit during the time period.

Abstract: Communicating among stations in a network includes, from each of multiple stations in the network, transmitting information indicating which other stations from which that station is able to reliably receive transmissions. A schedule for communicating among the stations is determined based on the information from the stations and transmitting the schedule over the network. The schedule includes a plurality of time slots during which respective sets of stations are assigned to communicate using a contention-based protocol.

Abstract: A method for transmitting packets, including forwarding a first set of upstream packets and a first set of local packets by inserting at least one of the first set of local packets between subsets of the first set of upstream packets according to a first insertion rate; calculating a second insertion rate after forwarding a predetermined number of upstream packets generated by a single upstream source, by dividing a cardinality of the first set of upstream packets by a greatest common divisor of the predetermined number and the cardinality of the first set of upstream packets; and forwarding a second set of upstream packets and a second set of local packets from the local switch to the downstream switch by inserting at least one of the second set of local packets between subsets of the second set of upstream packets according to the second insertion rate.

Abstract: A slotted Aloha communication system is provided according to one embodiment of the invention. The system may include a hub and a plurality of RCSTs. According to one embodiment, congestion control may occur at the RCST based in part on the number of segments received at the hub, the number of retransmission segments received at the hub and the number of successful collision retransmission segments received at the hub. The hub may communicate information regarding received segments. Congestion control may include calculating a transmission probably, performing a skewed probability measure with a probability equal to the transmission probability. If the results of the probability measure is positive the RCST may transmit or retransmit a segment within a first time prior, if the probability measure is negative then the RCST waits a set time period and reperforms the skewed probability measure.

Abstract: An arbitration device includes an arbitration section, a counter, and a changing section. While write request signals and read request signals for a transfer path, are inputted from request sources, the arbitration section arbitrates an order that the write and read request signals use the transfer path, and when arbitration is settled, outputs use permission signals to the request sources. The changing section changes a time from outputting of the write request signals until inputting of the write request signals to the arbitration section, and/or a time from outputting of the use permission signals for the write request signals until inputting of the use permission signals to the request sources.

Abstract: A radio communication system including a coordinator unit and at least one communications terminal configured for the radio communication system in which access to the radio resource is performed in accordance with time-division multiplexing, where the radio resource is divided into determinate time frames, the coordinator unit assigns to the at least one communications terminal, at least one useful data transmission time slot whose temporal position is determined in sequential time frames with respect to the beginning of the particular time frame, and the individual time frames are structured such that they contain a synchronization time slot, at least one useful data transmission time slot of equal length and one additional dynamic time slot.

Abstract: In one example, an Edge Quadrature Amplitude Modulation (EQAM) communicates EQAM information to a Modular Cable Modem Termination System (M-CMTS) core using a routing protocol that is configured on a packet switched network coupling the EQAM to the M-CMTS core. The EQAM generates a routing message according to the routing protocol and inserts EQAM information, such as a description of a modulated channel extending from the EQAM, the service-group information, etc, into the routing message. The EQAM then floods the EQAM information over at least portions of a routing domain by transmitting the routing message to an adjacent intermediary device.

Abstract: Subject matter disclosed herein relates to random linear network coding schemes for reliable communications for time division duplexing channels. In at least one embodiment, a transmitter node transmits M data packets through a half-duplex link using random linear network coding. The transmitter node transmits coded packets back-to-back through the link before stopping to wait for an acknowledgement (ACK) packet. An optimal number of coded packets Ni to be transmitted in a subsequent transmission may then be determined based, at least in part, on a number of degrees of freedom (DOFs) a receiving node needs to decode the M information packets from received coded packets.

Abstract: A method of changing channels of a first device in a wireless network, which includes a first coordinator and at least one device, comprises searching whether another channel other than a first channel which is currently used in the wireless network is available, changing the first channel to a second channel among at least one or more available channels as a result of the searching step, and transmitting data to a second device or receiving data from the second device through the second channel.

Abstract: Methods and apparatus for initiating a traffic transmission between a first device and a second device are disclosed. One method includes determining whether the first device has a receive priority or a transmit priority over the second device during a first data frame, determining whether the first device has data to transmit to the second device during the first data frame, transmitting, from the first device, a receive priority control signal during a receive priority control slot (Rxp) corresponding to the first data frame if the first device has the receive priority and no data to transmit, and transmitting, from the first device, a transmit priority control signal during a transmit priority control slot (Txp) corresponding to the first data frame if the first device has the transmit priority and data to transmit.

Abstract: An integrated circuit configured to operate in a mobile device includes a discovery generator module. The discovery generator module is configured to generate a corresponding random value for each beacon interval. A discovery control module is configured to determine a duration of time of a given beacon interval in which the mobile device is to operate in at least one of an active mode and a sleep mode. The duration of time is based on the corresponding random value generated for the given beacon interval. A physical layer (PHY) device is configured to wirelessly transmit a discovery request signal during the time the mobile device is operating in the active mode. The mobile device is partially powered down or fully powered down during the time the mobile device is operating in the sleep mode.

Abstract: In a trading system market data from a matching engine is distributed by a broker to a plurality of trading floors repeatedly every T seconds, typically one second. This one second distribution period is divided into a plurality of time slots and each trading floor is randomly assigned to a slot. Data for a given trading floor is calculated and distributed during the time slot assigned to that floor. The position of a trading floor relative to others is varied by swapping a pair of adjacent time slots every J distribution periods.

Abstract: In order to improve efficiency for sub-carrier allocation in a TDM multi-carrier system, the invention provides a novel frame structure and corresponding method and apparatus. During a centralized short period, each terminal sends a probe message including a predefined sequence to a network device and the network device estimates the channel characteristics for each sub-carrier with respect to each terminal by estimating the received probe message. In this way, sub-carrier allocation can be improved and sub-carriers with good channel characteristics are allocated to appropriate terminals.

Abstract: A method and system by which a base station in a Wireless Regional Area Network (WRAN), and more generally a transceiver in a cognitive radio (CR) system, can communicate with other transceivers to fairly share transmission and reception of scheduled use (“occupancy”) of frames on a single channel within a frame-based, on demand spectrum contention system. The method and system disclose how the base station can initiate contentions for an increased share of the frames available in the following superframe of the CR system. The method and system assure fair and efficient access to the transmission channel by a random number based contention process.

Abstract: An apparatus and method for allocating Radio Network Temporary Identifiers (RNTIs) for random access in a mobile communication system are provided. An Evolved Node B (ENB) determines the number of RNTIs allocated to at least one User Equipment (UE) that transmitted a random access preamble, determines an average number of random access preambles received during a Transmission Time Interval (TTI), and sets a timer based on the number of allocated RNTIs and the average number of random access preambles. If a cell identifier corresponding to a first UE is not received from an upper layer before expiration of the timer, the ENB releases the RNTI allocated to the first UE, and allocates the released RNTI to a second UE different from the first UE.

Abstract: A computer-implemented method may include receiving at a wireless device one or more beacon packets sent by a communication base station, determining a delay period at the wireless device, wherein the delay period is determined so that a delay for the wireless device is different than a delay for another wireless device, sending a first association request from the wireless device after waiting for the delay period, and establishing communication with the base station if an association response is received from the base station within a determined time period. The first association request may include information identifying the wireless device and an association code.

Abstract: A protocol for collision avoidance in inter and intra basic service set broadcast/multicast communication in a wireless network is disclosed. An access point reserves a broadcast transmission time and conveys that reservation to each of its associated stations. Using a beacon or an action frame, the transmission reservation time is sent to all stations and other neighboring access points within range of the primary access point. Upon receiving the broadcast transmission time reservation, each station associated with the reserving access point and any neighboring access points set their network allocation vector thus preventing frame transmission or reception during the now reserved transmission time.