Alcatel Lucent

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.

A call server for optimizing the use of the resources in a media gateway of a core network, this call server being configured to receive a session setup request message decide to accept or to reject the session setup request as a function of the load of a gateway controlled by this call server retrieve an internal priority value assigned to an incoming SIP trunk linked to this core network and carrying this session setup request message and decide to accept or to reject the session setup request also as a function of the internal priority value assigned to an incoming SIP trunk carrying this session setup request message.

A method is provided of registering for a service a device residing in a small cell provided by a small cell base station, the small cell base station being associated with a cloud-based server, the server including a docker container for controlling the service in that small cell, the docker container having a docker port, and the method including the steps of: the device sending a request to register including a small cell identifier of the small cell, the server receiving the request and relating the small cell identifier in the request to a corresponding docker port identifier, the device being informed of the docker port identifier of the docker associated with that small cell.

The present disclosure generally discloses capabilities for supporting new network zones and associated services. The network zones and associated services may include a near-real-time (NRT) zone and associated NRT services, a real-time (RT) zone and associated RT services, or the like. The resilient network zones and associated resilient and non-resilient services may be configured to provide bounded latency guarantees for reliably supporting various types of applications (e.g., mobile fronthaul, cloud computing, Internet-of-Things (IoT), or the like). The network zones and associated services may be provided using a distance-constrained fiber and wavelength switching fabric design comprised of various network devices and using associated controllers, which may be configured to support service provisioning functions, service testing functions, wavelength switching functions, and so forth.

The disclosure provides a method for assisting a UE to implement a UL channel access in a base station of an eLAA-based communication system. The method comprises determining a listen-before-talk (LBT) priority for the UE; and transmitting a first signaling indicating the determined LBT priority to the UE. An enhanced UL channel access mechanism is proposed by the disclosure. In this mechanism, the eNB can provide some assistance to facilitate UL access. Chances of multiple user multiplexing and spectrum efficiency in LAA UL can be improved by this solution.

A method and device for detecting a Physical Downlink Control Channel, PDCCH, are provided. According to an embodiment of the present invention, the method for detecting a PDCCH at a UE includes: receiving ( 100 ) a configuration of an Enhanced-PDCCH, E-PDCCH; receiving ( 101 ) a subframe; determining ( 102 ) whether the received subframe is a Multimedia Broadcast Multicast Service Single Frequency Network, MBSFN, subframe; and according to a determination result, detecting ( 103 ) the PDCCH, where if the received subframe is an MBSFN subframe, a common PDCCH in the MBSFN subframe is detected, and if the received subframe is a non-MBSFN subframe, an E-PDCCH in the non-MBSFN subframe is detected.

The present invention relates to a donor radio access node (DeNB 1 ) configured to wirelessly connect to, and to proxy operation of a source relay node (RN 1 ), and further configured to forward upstream user traffic towards a serving gateway (S-GW 1 ) during a handover of a particular mobile device (UE 1 ) from a source cell (A) operated by the source relay node to a target cell (C) operated by a target radio access node (eNB 2 ). In accordance with an embodiment of the invention, the donor radio access node comprises: —first forwarding means (FW 1 ) for forwarding a sequence of upstream data packets (P 1 , P 2 , P 3 ) from the source relay node to the serving gateway, which sequence of upstream data packets comprising upstream data packets up to a particular packet sequence number (Y−1), —second forwarding means (FW 2 ) for forwarding a data transfer status message (SN STATUS TRANSFER) for the particular mobile device from the source relay node to the target radio access node, which data transfer status message comprising an information element (Y) indicative of the particular packet sequence number, wherein the donor radio access node comprises a forwarding controller (CTRL) coupled to the first and second forwarding means, and configured to interdependently control forwarding of the data transfer status message and of any pending upstream data packet (P 2 , P 3 ) out of the sequence of upstream data packets that has not been yet validly forwarded to the serving gateway. The present invention also relates to a method for forwarding upstream user traffic towards a serving gateway during a handover.

The embodiments of the invention relate to a method for operating a first base station (BS 1 ) in a radio communication system (RAN). The method contains transmitting first reference signals via a first radiation beam (BM 1 -BS 1 ) being directed towards a first direction and at least second reference signals via at least one second radiation beam (BM 2 -BS 1 , . . . , BM 5 -BS 1 ) being directed towards at least one second direction. The method further contains receiving for a hand over of a mobile station (MS) from a second base station (BS 2 ) being a serving base station of the mobile station (MS) to the first base station (BS 1 ) an indication for a radiation beam being selected from a group of radiation beams comprising the first radiation beam (BM 1 -BS 1 ) and the at least one second radiation beam (BM 2 -BS 1 , . . . , BM 5 -BS 1 ) for applying the selected radiation beam as an initial radiation beam at the first base station (BS 1 ) for serving the mobile station (MS). The method even further contains scheduling radio resources for the initial radiation beam for serving the mobile station (MS) based on the indication. The embodiments further relate to a method for operating a second base station (BS 2 ) in a radio communication system (RAN), to a first base station (BS 1 ) for operation in a radio communication system (RAN) and to a second base station (BS 2 ) for operation in a radio communication system (RAN).

A method for optical signal amplification in an optical communication system is presented. The optical communication system comprises an optical line terminal, a plurality of optical network units, an optical splitter and a plurality of circulators. The optical network units comprise each an optical amplifier. A first optical signal is sent in a downstream direction from the optical line terminal to a first circulator from the plurality of circulators. The first optical signal is further sent from the first circulator to a first optical network unit from the plurality of optical network units and it bypasses the optical splitter. The first optical signal is amplified in the optical amplifier of the first optical network unit to generate an amplified optical signal. The amplified optical signal is sent from the first optical network unit to the first circulator through the optical splitter and is further sent from the first circulator to a further of the plurality of optical network units.

A node is configured for connection to a massive multiple-input, multiple-output (MIMO) array to provide spatially multiplexed channels in an unlicensed frequency band. The node includes a memory configured to store samples of non-spatially filtered signals received by the node during a first listen-before-talk (LBT) operation used to acquire the unlicensed frequency band. The node also includes a processor configured to determine, based on a number of previously stored samples, a duration of a silent time interval during which the node collects samples of non-spatially filtered signals and stores the samples in the memory. The node further includes a transceiver configured to perform a second LBT operation to acquire the unlicensed frequency band using a spatial filter determined based on the samples stored in the memory.