100results about "In M2M and D2D communication" patented technology

A method of bootstrapping between endpoint client and server in a low power wireless network. The method includes the steps of initiating a bootstrap request from an endpoint client to the server with the bootstrap request including an endpoint client name in an identifier, determining a registry apparatus to be assigned to the endpoint client, accepting the bootstrap request at the server and in response to the bootstrap request providing a security object and an identifier to the endpoint client to identify the assigned registry apparatus.

One embodiment of the present description provides a method for monitoring a physical downlink control channel (PDCCH). The method for monitoring a PDCCH can comprise the steps of: performing a frequency division duplex (FDD) half-duplex operation; and determining whether to monitor the PDCCH if discontinuous reception (DRX) is set. Here, when a downlink subframe of a downlink carrier is positioned immediately before an uplink subframe of an uplink carrier, the PDCCH can be monitored in the downlink subframe during an active time.

The invention relates to a method for requesting uplink resources by a user equipment in a communication system, wherein a DRX, Discontinued Reception, function is running at the user equipment. The transmission of a scheduling request for requesting uplink resources to a radio base station is triggered upon triggering of a buffer status report in the user equipment. However, the triggering of the scheduling request is delayed such that the scheduling request is triggered in one of the subframes—preferably the first subframe—of an On-Duration period of a DRX cycle according to the DRX function. Correspondingly, the triggered scheduling request is transmitted to the radio base station in the next possible scheduling request transmission occasion after the triggering of the scheduling request is delayed.

A first device may configure a second device, such as a sidelink receiver, so that an interference protection zone surrounding the second device may be dynamically adjusted in size based, for example, on various objectives and / or use cases recognized by the first device. The interference protection zone may be, for example, an area surrounding the second device, within which neighboring devices may be silenced. Changes to the interference protection zone may be achieved by providing a dynamic clear-to-send (CTS) transmit power scaling parameter, that is different from a pre-assigned constant parameter for CTS power control stored at the second device, to the second device from the first device. The second device may calculate CTS channel power using at least the dynamic CTS transmit power scaling parameter and the received RTS channel power. The second device may send a CTS message in a CTS channel at the calculated CTS channel power.

A method and system for uplink-downlink transmission of data packets in a wireless cellular network, during idle state of User Equipment (UE) using connectionless transmission is disclosed. The method establishes S1 common bearer between a Radio Access Network (RAN) node and Serving Gateway (SGW) and S5 common bearer between the SGW and Packet Data Network Gateway (PGW). The method defines a modified Uu interface between the UE and the RAN node. The method appends data packets with UE Identifier (ID) and routing information as packet header information to independently route data packets through wireless cellular network in a self-sustainable manner using the established common bearers and the modified Uu interface. The method secures data packets by providing integrity and ciphering protection. The method eliminates cost of dedicated bearer set up and reduces signaling overhead on the Uu interface thereby improving network efficiency and battery life of the UE.

A module with an embedded universal integrated circuit card (eUICC) can include a received eUICC profile and a set of cryptographic algorithms. The received eUICC profile can include an initial shared secret key for authentication with a wireless network. The module can receive a key K network token and send a key K module token to the wireless network. The module can use the key K network token, a derived module private key, and a key derivation function to derive a secret shared network key K that supports communication with the wireless network. The wireless network can use the received key K module token, a network private key, and the key derivation function in order to derive the same secret shared network key K derived by the module. The module and the wireless network can subsequently use the mutually derived key K to communicate using traditional wireless network standards.

Provided is random access method, performed by terminal for uplink data transmission during random access process between cellular based machine communication terminal and base station. The method includes performing random access process between cellular based machine communication terminal and base station, and the random access process includes selecting random access resource by considering coverage level and whether to support multi-tone transmission or not. Terminal can perform efficient random access process in response to coverage level, subcarrier spacing configuration, multi-tone configuration when machine communication terminal or machine communication device which operates in cellular based IoT system perform random access, number of repetition may be increased, when coverage level is changed, by minimizing the change in coverage level, and operation time of the terminal, due to standing by up to PRACH resource corresponding to the coverage level, may be reduced to reduce energy consumption and to enhance delay time performance.

The present invention relates to a method for transmitting and receiving data in a wireless communication system supporting device to device (D2D) communication. The method performed by first User Equipment (UE) includes receiving first control information related to D2D communication from an eNB, transmitting second control information, including resource information related to D2D data transmission, to second UE based on the received first control information, and transmitting the D2D data to the second UE. Receiving the first control information includes allocating, by the eNB, a resource pool related to the D2D communication through high layer signaling.

A computer device may include a memory storing instructions and a processor configured to execute the instructions to select a broadcast method for a wakeup signal for a wireless communication device; instruct a base station to broadcast the wakeup signal using the selected broadcast method; and provide information identifying the selected broadcast method to the wireless communication device. The processor may be further configured to receiving a wakeup request from a machine-type communication interworking function (MTC-IWF) device; map the received wakeup request to a wakeup signature beacon signal associated with the wireless communication device; and instruct the base station to transmit a wakeup signature beacon signal to the wireless communication device based on the received wakeup request.

An electronic device configured to perform wireless communication in accordance with vehicle-to-X (V2X) communication, the V2X communication including at least vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, and vehicle-to-pedestrian (V2P) communication, each of the V2V, V2I and V2P communications having an intermittent communication function; receive a signal associated with a location of the electronic device; determine whether to activate or deactivate a communication parameter corresponding to the V2P communication based on the signal associated with the location of the electronic device; activate or deactivate the communication parameter corresponding to the V2P communication based on the determining; and activate the intermittent communication function for the V2P communication in a case that that the parameter corresponding to the V2P communication is activated.

An apparatus for reporting connection setup request, includes a request transmitting unit configured to transmit a connection setup request for device-to-device communication to a network side when it is determined according to pre-obtained configuration information that the connection setup request for device-to-device communication can be transmitted to the network side.

Methods, systems, and devices are described for wireless communication at a UE. A user equipment (UE) may perform an initial access procedure to establish a connection with a serving cell. The UE may then arrange a regular transmission schedule with the serving cell including a discontinuous transmission (DTX) cycle and an acknowledgement schedule. The UE may enter a low power mode and refrain from any transmission during the a sleep interval of the DTX cycle. The UE may then wake up and transmit a message to the serving cell after the sleep interval without performing another access procedure. The UE may perform another access procedure to transmit at times not covered by the regular transmission schedule. For example, if an acknowledgement (ACK) for the message isn't received, the UE may perform another access procedure for retransmission.

The present invention relates to a method and a device for reselecting a synchronization signal in a wireless communication system supporting device-to-device direct communication and the method includes: receiving a first synchronization signal from a second UE and receiving a second synchronization signal from a third UE; comparing a first reception power level indicating reception power of the first synchronization signal and a second reception power level indicating the reception power of a second synchronization signal with a first threshold value indicating minimum reception power; and selecting the first synchronization signal or the second synchronization signal according to the comparison result, and the synchronization signal is a synchronization signal selected in the previously synchronization procedure.

Disclosed are a method of changing a connection state according to a movement of a UE and an apparatus for the same. The method of a UE includes: receiving indication information indicating a connection change into a specific RRC state from an evolved NodeB (eNB); configuring a connection state of the UE into the specific RRC state based on the indication information and performing a cell reselection operation according to a movement of the UE; and changing the connection state of the UE into an RRC idle state based on at least one piece of information on whether an RRC resume procedure is initiated, system information of a cell selected by the cell reselection operation, and radio access technology information, wherein the specific RRC state is a state distinguished from an RRC connection state and the RRC idle state.

A communications terminal includes a transmitter to transmit signals, a receiver to receive signals, and a controller to control the transmitter and receiver. The controller includes an input buffer receiving data packets for transmission. The controller can identify whether the received data packets are delay tolerant or non-delay tolerant, to determine a current state for communications for transmitting the data packets and based on predetermined conditions including a current state for radio communications, an amount of the delay tolerant data packets in the input buffer, and an amount of the non-delay tolerant packets in the input buffer, either transmit the non-delay tolerant data packets or transmit the non-delay tolerant data packets and the delay tolerant data packets from the input buffer to a mobile communications network using the transmitter, or maintain the delay tolerant or non-delay tolerant data packets in the input buffer until the predetermined conditions are satisfied.

A communications device includes a transmitter to transmit signals representing data to an infrastructure equipment of a mobile communications network via a first wireless access interface and to transmit signals via a second wireless access interface to one or more communications apparatus which can act as relay nodes, a receiver to receive signals from the infrastructure equipment via the first wireless access interface and to receive signals via the second wireless access interface from the one or more communications apparatus which can act as relay nodes, and a controller. The controller can form a relay assist request message and with the transmitter and receiver to transmit the relay assist request message on the second wireless access interface for reception by the one or more communications apparatus which can act as relay nodes to assist in communicating signals representing data to the infrastructure equipment via the first wireless access interface.

A method and apparatus for selecting a relay UE in a wireless communication system is provided. A remote UE selects a relay UE whose measured channel quality with the remote UE satisfies a condition based on a threshold, and transmits data, which is required to be relayed by the relay UE to a network, to the relay UE.

The invention provides for mobile radio communications device (10) for operation within a mobile radio communications network and arranged to employ one of a plurality of possible power saving modes, and arranged to send non-access stratum or access stratum signalling (14) to the network including an indication of at least one of the said plurality of possible power saving modes, and responsive to which indication the network (12) is arranged to return confirmation (16) of the power saving mode to be employed by the mobile radio communications device (10), the mobile radio communications device (10) further being arranged to receive the said confirmation (16) and to initiate operation of the confirmed power-saving mode (26; 38; 44).

Wireless communications systems and methods related to the reduction in a probability of collision for grant-less transmissions from internet of everything (IOE) devices while not increasing search complexity at a base station are disclosed. An IOE device randomly selects a first access resource from a common pool that the base station searches to initiate a transmission. If a metric associated with the data transmission is predicted to exceed a threshold, the IOE device also requests a second access resource from a reserved access pool from the base station, that the base station does not search. The IOE includes the request in the data transmission. The base station and the IOE device switch to the second access resource after the base station identifies an available resource from the reserved access pool and the IOE device completes the data transmission using the second access resource.

The present disclosure relates to transmitting data over a physical uplink shared channel in a wireless communication system by using an asynchronous hybrid automatic repeat request, HARQ. An exemplary apparatus comprises a first timer configured to start upon uplink data transmission and stop after a first predetermined time; a second timer configured to start upon stop of the first timer and to stop after a second predetermined time; a receiver for receiving downlink control information including a positive acknowledgement for uplink new data transmission or retransmission, the receiver being configured to perform the receiving only when the first timer is stopped and the second timer is running, wherein the second timer is further configured to stop upon receiving the positive acknowledgement. Moreover, an apparatus for receiving the data and transmitting the control channel is provided as well as the corresponding transmitting and receiving method.