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

An apparatus and method for accessing a Random Access Channel (RACH) at a low-power terminal in a wireless communication system are provided, in which resource allocation information is acquired according to used resource identification information included in system information broadcast from a Base Station (BS), and a random access preamble is transmitted to the BS according to the acquired resource allocation information.

Disclosed are methods and system for dynamically switching at least a base station in ON / OFF mode in a cellular network. The method comprises: determining traffic load information of BSs; exchanging the traffic load information between BSs; determining at least a preferred BS for one of a switched OFF mode and a switched ON mode. The system comprises: at least a coverage BS with a master controller; at least a capacity BS with a slave controller adapted to be in one of the switched ON mode and the switched OFF mode depending on network conditions and to satisfy cellular traffic loads, and at least a communication interface adapted to provide interface between at least the coverage BS and the capacity BS.

A method and apparatus for performing transmit (Tx) power control in a convergence network of a plurality of communication systems. A method for performing transmit power control (TPC) in a plurality of communication system convergence networks includes receiving, by a first entity of a first communication system, a TPC information request message requesting information associated with transmit power control (TPC) from a second entity of a second communication system; upon receiving a request of the TPC information request message, transmitting a first TPC information reporting message, which includes a maximum transmit (Tx) power value of the first entity and an interference signal value caused by a neighbor entity of the first entity, to the second entity; receiving a TPC command message, which includes information of the maximum Tx power value of the first entity adjusted based on the maximum Tx power value of the first entity and the interference signal value, from the second entity; and adjusting the maximum Tx power value of the first entity based on the information regarding the adjusted maximum Tx power of the first entity.

Methods and systems are provided for efficient and secure “Machine-to-Machine” (M2M) between modules and servers. A module can communicate with a server by accessing the Internet, and the module can include a sensor and / or actuator. The module and server can utilize public key infrastructure (PKI) such as public keys to encrypt messages. The module and server can use private keys to generate digital signatures for datagrams sent and decrypt messages received. The module can internally derive pairs of private / public keys using cryptographic algorithms and a set of parameters. A server can use a shared secret key to authenticate the submission of derived public keys with an associated module identity. For the very first submission of a public key derived the module, the shared secret key can comprise a pre-shared secret key which can be loaded into the module using a pre-shared secret key code.

The present disclosure relates to a method for activating a relay functionality of a ProSe capable and relay-capable user equipment within a mobile communication network. The radio base station, to which the relay UE is connected, determines whether further relays are necessary in the radio cell controlled by the radio base station. In case further relays are necessary in the radio cell, the radio base station selects a persistence check value and transmits a broadcast message in the radio cell. The broadcast message at least indicates that further relays are necessary and comprises the selected persistence check value. Upon receiving the broadcast message, the relay UE activates its relay functionality in case it determines that relay requirements for activating its relay functionality in the radio cell are fulfilled and in case a persistence check performed by the relay UE based on the received persistence check value is successful.

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 present disclosure relates to a method for activating a relay functionality of a ProSe capable and relay-capable user equipment within a mobile communication network. The radio base station, to which the relay UE is connected, determines whether further relays are necessary in the radio cell controlled by the radio base station. In case further relays are necessary in the radio cell, the radio base station selects a persistence check value and transmits a broadcast message in the radio cell. The broadcast message at least indicates that further relays are necessary and comprises the selected persistence check value. Upon receiving the broadcast message, the relay UE activates its relay functionality in case it determines that relay requirements for activating its relay functionality in the radio cell are fulfilled and in case a persistence check performed by the relay UE based on the received persistence check value is successful.

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.

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.

A communication method and apparatus of a terminal in a mobile communication system are provided. The method includes generating uplink control information for at least one activated cell; configuring, if the activated cell belongs to a Master Cell Group (MCG) under a control of a Master evolved Node B (MeNB), an uplink control channel based on the uplink control information of the activated cell belonging to the MCG; and transmitting the uplink control channel to a Primary Cell (PCell).

Current wireless networks do not allow machine type communication (MTC) devices to have long discontinuous reception (DRX) cycles or sleep lengths. A long DRX cycle may allow MTC systems and devices to operate with much longer DRX / Sleep cycles / periods. This may facilitate the MTC operations for infrequent system access or infrequent system reaching (e.g. paged once in a week) with no or low mobility and may allow MTC devices to sleep for a long time with low power consumption.

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.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. An apparatus and method are provided for supporting a high data rate service. A method for an application server includes receiving, from a first terminal, a service request for a second terminal; identifying that the second terminal is in a power saving mode; and transmitting an early media service to the first terminal based on information related to the power saving mode of the second terminal.

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.

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.

A method performed by a user equipment (UE) that operates according to a first indicator and a second indicator is provided. When the UE is in a radio resource control (RRC) connected state with a first communication system and is in a state of idle mode with a second communication system, the UE receives a first message including the first indicator and the second indicator from the first communication system. The first indicator instructs the UE to perform association processes with a base station of the second communication system. The second indicator instructs the UE to operate in a power saving mode with the base station of the second communication system. After the UE performs the association processes, the UE switches to an RRC-idle mode state with the first communication system and enters the power saving mode from the idle mode with the second communication system.