Abstract: The invention is related to a method of transmitting data whereby a transmission channel towards an access point (10) is shared among a plurality of users (12), the data being transmitted using the Contention Resolution Diversity Slotted ALOHA (CRDSA) method. According to the invention the number of copies (14a,14b, 14c; 16a, 16b, 16c; 18a,18b,18c) of data packet (14, 16, 18) transmitted simultaneously by a user (12) within one frame is varied.

Abstract: A network switch, in response to receipt from a source station of a Layer 2 reservation request, establishes a reservation for capacity of an ingress queue of the network switch for a data flow of the source station. In response to a queue overrun condition on the ingress queue of the network switch while the reservation is active, the network switch preserves data frames in the data flow of the source station transmitted pursuant to the reservation and discards other data frames.

Abstract: A network includes an access point using a first protocol and a station using both the first protocol and a second protocol. The station uses the first protocol before a first threshold and a second protocol after the first threshold. A first duration between the second threshold and the first threshold is at least of sufficient length for the station to receive one data packet from the access point and send an acknowledgment. The station transmits to the access point a current clear-to-send packet at a current time during a current exchange based on success or failure of a previous exchange during which a previous clear-to-send packet was transmitted to the access point at a previous time.

Abstract: A device is dedicated to selection of a type of bearer channel for broadcasting contents between a service platform adapted to set up point-to-point and point-to-multipoint type bearer channels and a terminal, each content being associated with at least one set of broadcast parameters defining at least the type of bearer channel for broadcasting it and the frequency channel on which it is broadcast on a bearer channel of the type.

Abstract: A system (300), apparatus (301), and method are provided for decentralized medium access control comprising an enhanced protocol for UWB MAC that includes a distributed reservation protocol (DRP) for distributed reservation of the medium (310). The invention also relates to any wireless system (300) that uses a MAC protocol comprising a distributed reservation protocol. The method comprises devices (301) announcing medium reservations in beacons (400) and devices (301) that receive such announcements respecting the reservations.

Abstract: In order to facilitate reduced power consumption of an electronic device (such as a smartphone) when communicating with another electronic device (such as an access point) in a wireless network, the electronic device may change a wake policy based on the applications executing on the electronic device. In particular, the electronic device may monitor a subset of the applications currently executed by a processor in the electronic device, where the subset can include zero or more of the applications. Based on the subset, the wake policy of an interface circuit in the electronic device may be changed. This wake policy may specify a frequency of wake ups to receive information from the other electronic device and/or monitoring of unicast or multicast bits in a Traffic Indication Map element. In this way, the time that the electronic device is in the active mode can be reduced, thereby reducing power consumption.

Abstract: In one non-limiting, exemplary embodiment, a method includes: receiving at least one parameter from a broadcast channel (51); determining, using the received at least one parameter, information including at least one of an initial bit rate to use when transmitting on a random access channel (RACH) and an automatic repeat request (ARQ) profile to use when transmitting on the RACH (52); and transmitting a message on the RACH in accordance with the determined information (53).

Abstract: A system and method transmit a data stream from a source to a destination over a communication channel. A transmitter includes devices for processing inputs to assemble data packets for the data stream, and a multiplexer for assembling a data frame to be transmitted over the communication channel, in which each data frame has at least one fixed slot. The multiplexer sets at least one freely allocatable time slot in each data frame. Retransmission control devices connected to the multiplexer retransmit a specific data packet which is not properly received by the destination, using one of the freely allocatable slots.

Abstract: The present invention relates to a wireless communication system, and in particular, to a method and an apparatus for transmitting a downlink reference signal in a wireless communication system that supports multiple antennas.

Abstract: A method and apparatus for assigning a slot, including: constructing a HELLO packet, the packet including slot request information of a local node and/or slot request information of a neighbor node of the local node; and transmitting the packet, so that a node receiving the packet authenticates a reservation slot requested by a sender; wherein the slot request information of the local node includes an address of the local node and of a receiving node of a data packet to be transmitted and an index of the reservation slot requested by the local node; and the slot request information of the neighbor node includes an address of the neighbor node, an address of a receiving node of a data packet to be transmitted, an index of a reservation slot requested by the neighbor node, and confirmation information of the reservation slot requested by the neighbor node.

Abstract: In certain embodiments, a slave clock node in a wireless packet network achieves time synchronization with a master clock node by implementing a packet-layer synchronization procedure, such as the IEEE1588 precision timing protocol (PTP), to set the slave's local time based on the master's time. The slave's local time is then maintained by implementing a physical-layer syntonization procedure, such as synchronous Ethernet, without relying on the packet-layer synchronization procedure. The packet-layer synchronization procedure may be selectively employed to adjust the slave's local time (if needed) after significant periods of time (e.g., substantially greater than one second). Both the packet-layer synchronization procedure and the physical-layer syntonization procedure are traceable to a common reference timescale (e.g., UTC). Depending on the implementation, the packet-layer synchronization procedure can be, but does not have to be, terminated when not being employed to adjust the slave's local time.

Abstract: A method and apparatus for small packet transmission in response to machine type communication (MTC) device trigger indication are provided. For uplink (UL) transmission of small packet from MTC device in idle state, a tracking area update (TAU) complete non-access stratum (NAS) message is used to protect integrity and confidentiality of UL small packet transmission without attach/service request procedure during idle state. For downlink (DL) transmission of small packet from MTC device in idle state, a TAU accept NAS message is used to protect integrity & confidentiality of DL small packet reception without attach/service request procedure during idle state.

Abstract: Systems and methods for service period recovery in a wireless communications system are provided. An initial service period for transmitting data is assigned to a first remote station. Data period schedule information, including the assignment of the initial service period, is transmitted from a central station. In response to determining that the first remote station is not transmitting during the initial service period, a modified service period is assigned to the first remote station. A service period change announcement, including the assignment of the modified service period, is transmitted from the central station. In response to determining that the first remote station is not transmitting during the modified service period, the initial service period is truncated and a service period truncation is transmitted from the central station.

Abstract: A base station apparatus in a mobile communications system has a unit which transmits, to one or more user apparatuses, a downlink control signal including information for allocating a radio resource, a unit which receives an uplink signal from the one or more user apparatuses, and a unit which determines, based on a feedback from the user apparatus, a pre-encoding matrix indicator (PMI) indicating a pre-encoding matrix to be applied to multiple antennas of the base station apparatus. When a number of multiplexed users in the downlink control signal is no less than a predetermined number, the PMI indicating the pre-encoding matrix to be applied to a whole system bandwidth of the mobile communications system is reported to each of the user apparatuses.

Abstract: Disclosed is wireless communication base station equipment in which CCE allocation can be flexibly performed without collision of ACK/NACK signals between a plurality of unit bands, even when wideband transmission is performed exclusively on a downlink circuit. In this equipment, an allocation unit (105) sets up mutually different search spaces for each of a plurality of downlink unit bands, with respect to wireless communication terminal devices that communicate using a plurality of downlink unit bands, and allocates resource allocation information of downlink circuit data destined for the wireless communication terminal devices to CCEs in mutually different search spaces for each of the plurality of downlink unit bands, and an ACK/NACK reception unit (119); extracts a response signal in respect of the downlink circuit data from the uplink control channel associated with the CCE to which the resource allocation information of this downlink circuit data was allocated.

Abstract: A method is provided for coupling a plurality of access nodes wirelessly to a plurality of access terminals. The method includes dividing up a carrier frequency into a plurality of subbands; scheduling one or more access terminals to share one of the plurality of subbands; and via one of the plurality of access nodes, first communicating with the one or more access terminals over the one of the plurality of subbands. The communicating includes, within the one of the plurality of subbands, time division multiplexing interlaces corresponding to each of the one or more access terminals.

Abstract: The present invention relates to a method and a radio base station (700) for allocating resources to a UE such that the UE can transmit at least channel feedback information to the radio base station (700). According to exemplary embodiments of the present invention, the radio base station (700) is configured to take the possibility of a scheduling request transmission from the UE into account when allocating the channel feedback information resources in order to avoid wasting of uplink resources.

Abstract: The present invention relates to a method of reducing beacon collision probability in a communication network supporting control channels comprising beacon periods divided into beacon slots, each beacon period being followed by a contention period. In the method a communication device (101) operating in the communication network first chooses (503) an available beacon slot for transmission of a first type of beacon for exchanging network topology information with other communication devices operating in the communication network. Then the communication device transmits (515) a beacon of a second type comprising an identifier of the communication device and the chosen beacon slot for the transmission of the beacon of the first type, the beacon of the second type being transmitted in the contention period.

Abstract: The invention discloses a random access method and apparatus so as to perform random access for a User Equipment (UE) with a plurality of aggregated cells in a carrier aggregation-enabled LTE-A system. The method includes: determining a secondary cell configured for a UE and obtaining random access related parameter preset for the secondary cell; and sending the random access related parameter to the UE to instruct the UE to initiate random access procedure over the secondary cell corresponding to the random access related parameter. The inventive method achieves the purpose of enabling the UE to be synchronized with the network side by performing random access over a specified cell, having the UE maintain uplink synchronization with the network side in the configured secondary cell and ensuring the overall performance of the system.

Abstract: An apparatus and method for reducing call setup time of a wireless communication device including determining empty slots on a Common Control Channel where no SIB blocks or MIB blocks are scheduled therein and scheduling SIB7 or SIB 14 blocks in the empty slots to reduce call setup time. In one aspect, the uplink interference level contained in the SIB7 or SIB14 block is piggy-backed on SIB blocks other than SIB7 or SIB14 blocks.

Abstract: The present invention relates to a method of a base station, the method comprising: obtaining information about a service currently used by a communication terminal associated with the base station; performing predictive scheduling of transmissions from the communication terminal to the base station based on the obtained information, the predictive scheduling including determining an interval I which is the predicted maximal time period between consecutive transmission grants sent by the base station to the communication terminal; sending a first transmission grant to the communication terminal at the time t=0 in accordance with the predictive scheduling; sending a first SR inhibiting indicator to the communication terminal, preventing the communication terminal from sending a Scheduling Request (SR) to the base station unless a specified criterion is fulfilled; and sending a second transmission grant to the communication terminal at the latest at the time t=I. The invention also relates to the base station.

Abstract: A method for determining a channel quality index in an OFDM receiver is disclosed. The method comprises receiving signals comprising reference signals from a serving cell and reference signals from neighboring cells; determining signal power of the reference signals from the serving cell and signal power of the reference signals from detected neighboring cells; and determining carrier-to-interference ratio to be the ratio between the signal power of the reference signals from the serving cell and the signal power of the reference signals from the detected neighboring cells. Carrier-to-interference ratio is used for adapting physical layer properties and/or for deciding on handover. A computer program and apparatuses for implementing the method are also disclosed.

Abstract: Method and arrangement in a base station for allocating resources to a user equipment. The method and arrangement comprises analyzing a period of time comprising a subset of the predetermined scheduling request opportunities, detecting a scheduling request from the user equipment, establishing priority level information from the detected scheduling request and the subset of the predetermined scheduling request opportunities, and allocating resources to the user equipment, according to the established priority level information. In addition, a method and arrangement in a user equipment for assisting the base station in allocating resources to the user equipment are described.

Abstract: A method and apparatus for allocating a resource for an uplink control channel in a wireless communication system is provided. The method includes allocating a first resource for an uplink control channel and a second resource for a dynamic ranging channel. The second resource is located right after the first resource.

Abstract: A method, a computer program product, and an apparatus are provided. The apparatus determines paging resources of a plurality of paging resources allocated for listening to paging messages. In addition, the apparatus transmits information indicating the allocated paging resources in a peer discovery signal. The apparatus may determine the paging resources on which to listen based on information received in peer discovery signals received from other wireless devices. The received information indicates the paging resources allocated to the other wireless devices.

Abstract: Embodiments of the present invention relate to the field of security channel multiplexing, and disclose a method and an apparatus for multiplexing a HIP security channel. A method includes: receiving a message for requesting to transmit data; detecting whether a HIP security channel is established with the HIP host; if true, transmitting control signaling to the HIP host, where the control signaling is used to request to multiplex the HIP security channel to transmit data of the traditional host; if a response message returned from the HIP host is received, transmitting the data of the traditional host to the HIP host through the HIP security channel. With embodiments of the present invention, the quantity of HIP security channels established between the HIP proxy and the HIP host and the loads of maintaining the security channel can be reduced, and the utilization of the HIP security channel is increased.

Abstract: A mobile communication method according to the present invention includes: a step in which a mobile station UE transmits “Measurement Report” including identification information “ECGI” on a cell subordinate to a radio base station eNB, to a radio base station HeNB; a step in which a radio base station HeNB transmits “(X2) HO Request” including the identification information “ECGI” of the cell subordinate to the radio base station eNB, to an IP address of a gateway device HeNB-GW; and a step in which the gateway device HeNB-GW transfers the “(X2) HO Request” to the IP address corresponding to the identification information “ECGI” on the cell subordinate to the radio base station eNB.

Abstract: Disclosed is a wireless communication system and the like that can avoid interference even if a plurality of networks coexist. The wireless communication system includes a primary user, cluster head equipment, and a secondary user. The cluster head equipment is for providing a local area network to a cluster region containing the abovementioned primary user. Also, the cluster head equipment contains: an acquisition means that acquires one or both—of information regarding the primary user and information regarding a primary signal—and the like; and a transmission means that transmits information to the secondary user. Then, using this wireless communication system, the secondary user performs cognitive wireless communication or the like on the basis of the information received from the transmission means of the cluster head equipment.

Abstract: Allocation slot arrangement is provided for wireless body area networks (BANs). In particular, in some embodiments the allocation slots are arranged based on a set of rules and received input parameters. Allocation slot arrangement may comprise maximizing a weighted sum function computed by applying the rules and input parameters to all nodes over all possible arrangements.

Abstract: A cyclic prioritized multiple access method is disclosed which includes Fixed Deterministic Post-Backoff. Fixed deterministic post-backoff reduces conflicts between access points of overlapping cells. Contention-free sessions can be generated, one from each overlapping cell. Each active access point engages in a fixed deterministic post-backoff. A fixed deterministic backoff delay (Bkoff times a fixed number of idle time slots) is used by all access points, with the value of Bkoff being greater than the number of overlapping cells. The Bkoff should be large enough to enable the traffic that needs to be accommodated by the channel. Each access point has a backoff timer that is counted down using the shortest interframe space possible. A contention-free session is initiated when the backoff timer expires, and it is then reset to the value of Bkoff to start a new cycle.

Abstract: A method in a user equipment for requesting that a base station schedule the user equipment for an uplink data transmission to the base station is provided. The user equipment comprises a buffer. Directly or indirectly responsive to receiving data into the buffer to be transmitted to the base station, the user equipment generates a scheduling request trigger. The scheduling request trigger is configured to trigger the sending of a scheduling request to the base station if the trigger is pending at the next scheduling request opportunity, and to remain pending until it is cancelled. The user equipment cancels the pending scheduling request trigger when the data is accounted for in a buffer status report, which reports the size of the buffer to the base station, or when the data is included directly in a scheduled uplink data transmission whichever occurs first.

Abstract: In one embodiment, a device receives and stores a broadcast schedule, and may determine whether a neighbor unicast listening schedule is available for a neighboring device. If so, the device may transmit a data frame to the neighboring device pursuant to the neighbor unicast listening schedule. If a neighbor unicast listening schedule is not available, the device may transmit the data frame to the neighboring device pursuant to a broadcast schedule. Once the data frame is received by the neighboring device, pursuant to the neighbor unicast listening schedule or the broadcast schedule, an acknowledgement may be received from the neighboring device, which may include an updated neighbor unicast listening schedule for that neighboring device.

Abstract: An approach for transmission of data packets, based on virtual frame timing, over a communications channel is provided. A remote terminal receives a first stream of data packets at periodic time intervals. The terminal receives an allocation of time slots within a sequence of TDMA transmission frames, for transmission of the data packets over the channel. The timing structure of the allocated time slots is based on a virtual frame size relative to the interval timing of the first data packet stream, and independent of the frame size/timing of the TDMA transmission frames. The remote terminal may receive a second stream of data packets at periodic time intervals that differ from the time intervals of the first stream. In a multi-stream scenario, the virtual frame size for the time slot allocation is based on the greatest common denominator of the interval timings of the first and second data streams.

Abstract: Providing and receiving carrier information using a bitmap comprising a series of bits, each bit indicating one of two predetermined states for a respective carrier of a predetermined group of carriers.

Abstract: A wireless terminal adapted to function in a code division multiple access (CDMA) communications system is provided. The terminal includes a receiver adapted to receive frames having a slot structure in which there is a user identification channel and a shared channel, the shared channel having been transmitted using a plurality of Walsh codes, and containing content for either a plurality of voice users, a plurality of voice users and one high-rate data user, or only one high-rate data user. A slot of the shared channel contains content for a plurality of users which was transmitted in parallel using different Walsh code spaces for different users. The wireless terminal is adapted to decode the user identification channel to determine when a slot of the shared channel contains voice and/or high-rate data content for the wireless terminal.

Abstract: A method and apparatus for controlling signal transmission is provided. The method includes determining whether a signal to noise ratio (SNR) between a first base station and a signal receiving node is less than a threshold, and controlling the first base station and a second base station to cooperatively transmit a signal to the signal receiving node in response to the SNR being less than the threshold. Further, the second base station is located in an adjacent cell to a cell containing the first base station.

Abstract: A method for node communication for use in a rack system is provided. The method includes providing a detecting unit for connecting to the nodes via a circuit switching device; predefining a linked list in which a limit of times for the detecting unit to communicate with each of the nodes is set; sequentially selecting one node of the nodes so that the detecting unit is connected to the one node via the circuit switching device; adding an assigned communication parameter between the detecting unit and the one node selected to the linked list, wherein a number of times of communication corresponding to the assigned communication parameter is not greater than the limit of times; and performing communication between the detecting unit and the one node selected in accordance with the assigned communication parameter in the linked list.

Abstract: A method, apparatus, and system for triggering resource configuration are disclosed. The method includes: if user equipment (UE) in Cell_Paging Channel (Cell_PCH) state figures out that the total amount of buffer occupancy at the radio link control (RLC) layer or the Transport Channel Traffic Volume is larger than configured threshold, the UE carries an indication in a MEASUREMENT REPORT message and transmit the message to the network side, wherein the indication is used to trigger the network side to configure resources for the UE. With the present invention, the resource configuration is quickly triggered, and the delay of the UE in the data transmission is minimized.

Abstract: A first base station receives a message from a second base station. The first base station and the second base station communicate to wireless devices employing a downlink carrier comprising downlink resource blocks. The message comprises downlink beamforming information indicating a beamforming codeword of a codebook employed for downlink resource block(s). The first base station selects, for a subset of the downlink resource blocks, beamforming codewords from a codebook based, at least in part, on the downlink beamforming information. The first base station transmits signals on a subset of the downlink resource blocks employing beamforming codewords.

Abstract: A method includes dividing a Time Division Multiple Access (TDMA) structure into a plurality of first time slots and a plurality of second time slots. The first and second time slots are allocated to communications using first and second protocols, respectively. The method also includes communicating with at least one first wireless device using the first protocol during the first time slots. The method further includes communicating with at least one second wireless device using the second protocol during the second time slots.

Abstract: According to one aspect of the present invention, a method in which a relay performs multicell cooperative communication comprises the steps of: receiving scheduling information and data from a base station; receiving a bypass indicator from the base station; performing protocol layer processing on the scheduling information and data in accordance with the bypass indicator; and transmitting the processed data to a user equipment in accordance with the processed scheduling information, wherein said bypass indicator indicates that the protocol layer processing should be performed for only a portion of the protocol layer of the relay.

Abstract: The present invention relates to a method for protecting MU-MIMO (Multi User-Multiple Input Multiple Output) data through a multi-RTS/CTS frame exchange in a MU-MIMO based wireless communication system. The method of the present invention comprises: a process where an indicator for VHT data protection is added to an RTS frame, using the structure of an RTS/CTS frame for an existing legacy terminal during the multi RTS/CTS frame exchange; a process where an access point designates and then transmits the duration period of the RTS frame while transmitting the RTS frame; and a process where wireless terminals up to the (n?1)th terminal designate the duration period of the CTS frame as ‘0’ and send the designated duration period, while only the n-th wireless terminal designates NAV for data protection.

Abstract: The present invention relates to a method for transmitting the uplink control information in the wireless communication system supporting the multi-carriers according to one embodiment of the present invention, which comprises the steps of: reserving one or more channel selection resources for transmitting the uplink control information; receiving scheduling information for one or more uplink data channels to be transmitted on the same time domain resources as the reserved channel selection resources; determining an uplink data channel in which the uplink control information is multiplexed, from one or more uplink data channels; and multiplexing and transmitting the uplink control information in each of one or more resource element regions corresponding to each of one or more channel selection resources which are reserved to transmit the uplink control information, on the selected one uplink data channel.

Abstract: A first base station receives an application protocol message from a second base station. The application protocol message comprises an identifier of the second base station and a beamforming codebook. The beamforming codebook comprises a plurality of beamforming codewords. Each of the plurality of beamforming codewords is identifiable by an index. The first base station transmits signals to wireless devices using a subset of the plurality of beamforming codewords.

Abstract: In a method, modulator, transmitter and receiver, the modulator of data signals to be transmitted simultaneously to at least two receiving mobile stations in the same transmission time slot is adapted to select rotational angle of a QPSK transmission modulation, such as a hybrid ?-QPSK modulation used to modulate the data signals to the at least two mobile stations in response to the capabilities of the mobile stations that share the same transmission slot.

Abstract: The authentication system in the wireless LAN environment includes a first wireless LAN access point for providing a wireless LAN service to a terminal device accessing the first wireless LAN access point; the terminal device for transmitting an authentication request to a second wireless LAN access point when the terminal device moves to access the second wireless LAN access point while receiving the wireless LAN service through an access to the first wireless LAN access point; and the second wireless LAN access point for identifying the first wireless LAN access point based on identification information contained in the authentication request transmitted from the terminal device which has moved to access the second wireless LAN access point, acquiring authentication information on the terminal device from the identified first wireless LAN access point, and performing an authentication for the terminal device based on the acquired authentication information.

Abstract: A mobile station capable of being served via a first radio access technology (RAT) and a second RAT. The mobile station includes a component configured to receive a permission to identify a cell of the first RAT in absence of a first radio access type neighbor cell list for a serving cell of the second RAT. The mobile station also includes a component configured to identify a cell of the first RAT after receiving the permission.

Abstract: Techniques for MAC processing for efficient use of high throughput systems that is backward compatible with various types of legacy systems are disclosed. In one aspect a first signal is transmitted according to a legacy transmission format to reserve a portion of a shared medium, and communication according to a second transmission format transpires during the reserved portion. In another aspect, a communication device may contend for access on a legacy system, and then communicate according to a new class communication protocol with one or more remote communication devices during the access period. In another aspect, a device may request access to a shared medium according to a legacy protocol, and, upon grant of access, the device may communicate with or facilitate communication between one or more remote stations according to a new protocol.

Abstract: A wireless mobile communication device may include a first and second transceiver, a network load detection system, and a second transceiver controller. The first transceiver may be configured to wirelessly communicate with a first wireless communication network, such as a wireless cellular communication network. The second transceiver may be different from the first transceiver and may be configured to wirelessly communicate with a second wireless communication network which may be different from the first wireless communication network, such as the Internet and at least one Wi-Fi access point. The network load detection system may be configured to detect load information indicative of an amount of load on the first wireless communication network. The second transceiver controller may be configured to autonomously power on the second transceiver when the load information indicates a heavy load on the first wireless communication network.

Abstract: The present invention relates to a broadband wireless access system, and more specifically, to a method and apparatus for efficiently allocating resources to terminals in a random access system. The method for performing such a random access procedure of a terminal in a broadband wireless system according to one embodiment of the present invention comprises: transmitting a preamble sequence to a random access region in a base station; and receiving from the base station ACK information indicative of a received state of the preamble sequence. The ACK information receiving step is preferably a step of decoding a map information element that is masked as an identifier of the random access region.