Alcatel Lucent

Alcatel-lucent USA Inc.

Lucent Technologies Inc.

Agere Systems Inc.

Gemalto Sa

Nokia Technologies Oy

Said Tatesh

Fang-Chen Cheng

Sudeep K Palat

Jung Ah Lee

Lei Song

Rainer Walter Bachl

Mirko Schacht

Hongwei Kong

Matthew Baker

Alessio Casati

Hai Zhou

Teck H Hu

Francis Dominique

Jens Mueckenheim

Qiang Cao

James Paul Seymour

Henry Hui Ye

Patrick Georges Venceslas Charriere

Cristian Demetrescu

Iqbal Jami

Antonella Faniuolo

Gordon Peter Young

Christophe Demarez

Andrew Jonathan Bennett

Alfons Eizenhoefer

Florian Derriennic

Sudepp Kumar Palat

Michael Link

Peter Kuczynski

Iqbal Jarni

Simon Fabri

Sudeep Kumar Palat

Sundeep Kumar Palat

Andrew Bennett

A method of facilitating dormant small cell discovery in a wireless communications network including at least a small cell and a second cell includes changing, at the small cell, an operating state of the small cell from an active state to a dormant state, the dormant state being a state in which the small cell transmits discovery signals and does not transmit DL broadcast or DL control channels, the discovery signals being signals through which user equipments (UE)s discover the dormant small cell; sending, from the dormant small cell, a notification, the notification identifying, for at least the second cell, a duty cycle with which the first small cell will periodically transmit the discovery signals; and transmitting, from the dormant small, the discovery signals using a periodic transmission pattern that includes active portions and non-active portions defined by the duty cycle.

Methods and apparatuses for facilitating dormant cell discovery

User equipment decrypt information received in a first frame over an air interface during device-to-device (D2D) communication with another user equipment. The information is decrypted using a cryptographic function that is applied to a security key and a first frame number of the first frame.

Secure device-to-device (D2D) communication

An example of the present invention is a method of transmitting encrypted user data to a mobile terminal in a wireless telecommunications network. The method comprises sending to the mobile terminal a data packet. The data packet comprises both an identifier of encryption information to be used in recovering encrypted user data, and user data encrypted using the encryption information.

Encryption in a wireless telecommunications

At least one example embodiment discloses a method of coordinating a change from a first operating state to a second operating state of a selected cell in a system. The method includes changing to an intermediate state from the first operating state based on first signaling information exchanged between a serving cell of a user equipment (UE) and the selected cell in the first operating state and at least one signal received by the selected cell in the first operating state from the UE, the first operating state being a dormant state and operating in the intermediate state based on second signaling information between the serving cell and the selected cell, third signaling information between the serving cell and the UE and transmission information between the UE and the selected cell, the intermediate state being between the first operating state and the second operating state, the second operating state being an on state where the selected cell serves the UE.

Methods and systems for controlling cells in a network

First user equipment transmits a first synchronization signal and a second synchronization signal that are assigned to the first user equipment for device-to-device (D2D) communication. The first synchronization signal indicates a timing reference for D2D communication and a combination of the first synchronization signal and the second synchronization signal indicate resources allocated to the first user equipment to transmit discovery information for D2D communication. First user equipment detects a first synchronization signal and a second synchronization signal that are assigned to second user equipment for D2D communication.

Two-stage device-to-device (D2D) discovery procedures

Embodiments of the claimed subject matter provide a method and apparatus for device discovery in device-to-device (D2D) communication. One embodiment of the method includes generating first information indicative of a first synchronization signal in response to a request from a first user equipment to be authenticated for D2D communication with one or more second user equipment. The first information corresponds to a sequence used to generate a primary synchronization signal for transmission by a serving cell for the first user equipment. This embodiment of the method also includes providing the first information to the first user equipment so that the first user equipment can transmit the first synchronization signal.

Device discovery for device-to-device communication

An exemplary method of communicating includes a relay node that uses a cell identifier that is also used by a base station having a coverage area within which the relay node is located. The method includes determining that a mobile station is within a communication range of the relay node. A transmission power from the relay node is controlled so that the total transmission power of at least one transmission from the relay node and the base station corresponds to a selected transmit power limit. A timing of a downlink transmission from the base station and the relay node is coordinated based on a schedule determined by the base station. At least one uplink control parameter is set at the base station based upon uplink information regarding a link between the mobile station and the relay node.

Method and apparatus for power control and interference coordination

A multicast status availability indication from an anchor () is provided to a plurality of base nodes () that are part of a multicast group serviced by the anchor (). The availability status indication in one example is sent autonomously by the anchor () independent of any inquiry or attempted setup of a new session with that anchor by a base mode (). The base modes () maintain a candidate anchor set that includes information regarding currently available anchors for establishing new sessions, for example.

Broadcast anchor availability indication

The present invention provides a method of operating an idle mobile unit that is capable of communicating with first and second wireless communication systems. One embodiment of the method includes providing a location update message in response to the idle mobile unit transitioning from a first tracking area associated with the second wireless communication system to a second tracking area associated with the second wireless communication system. The first and second wireless communication systems are capable of paging the idle mobile unit following the location update message.

Method of providing location update messages and paging messages in a wireless communication system

An example of the present invention is a method of transmitting encrypted user data to a mobile terminal in a wireless telecommunications network. The method comprises sending to the mobile terminal a data packet. The data packet comprises both an identifier of encryption information to used in recovering encrypted user data, and user data encrypted using said encryption information.

A method is provided of transferring a call connection with a mobile terminal from a first network to a second network. The first network is capable of handling both circuit-switched and packet-switched modes of connection. The second network is capable of handling one of the packet-switched or circuit-switched modes of connection but not both. The terminal is capable of both packet-switched and circuit-switched call modes of connection. The method comprises the first network: identifying the location of the mobile terminal with respect to at least one of the networks, identifying the mobile terminal as being in a mode of connection not usable in the second network, instructing the mobile terminal to transfer the call connection to the other mode of connection, and transferring the call connection to the second network.

Call continuity

The present invention provides a method involving a configurable random access channel structure. One embodiment of the method includes generating a random access channel burst that includes a cyclic prefix and a selected number of repetitions of a preamble. The number of repetitions is selected based on at least one of a cell radius and a radio transmission frequency. This embodiment of the method also includes transmitting the random access channel burst over an air interface.

Configurable random access channel structure for range extension in a wireless communication system

The present invention provides a method and apparatus for using uplink reference signals for access grant requests. The method includes determining that at least one mobile unit is requesting access to at least one uplink channel based on information indicative of a change in a masking sequence applied to at least one reference signal. Another embodiment of the present invention includes providing a first reference signal modulated by a first masking sequence to indicate a request for access to at least one uplink channel.

Method of using uplink reference signals for access grant requests

A method is provided of registering a mobile terminal in an area of overlapping cell coverage by first and second networks for wireless mobile telecommunications. The networks are of different types. The method comprises: storing an identifier of the mobile terminal; storing in a controller a first record of in which cell or group of cells the mobile terminal is located in the first network and a second record of in which cell or group of cells the mobile terminal is located in the second network; and providing the mobile terminal with information of both records and said identifier.

Growing community of inventors

Swindon, United Kingdom

Said Tatesh