Abstract: The present disclosure provides a method and apparatus for X2 signaling. The method comprises, in a wireless communication network supporting coordinated multiple point transmission, transmitting load information from a first base station to at least one second base station via X2 signaling, wherein the load information comprises at least one item of i) a relative narrowband beam information element or ii) a relative narrowband scheduling information element. Current X2 signaling is enhanced to support coordinated multiple point transmission with non-ideal backhaul and improve interference coordination.

Abstract: A method is intended for establishing a dual connectivity between a user equipment and a MeNB and a SeNB. This method includes i) a first step during which the MeNB chooses a SeNB to offload a data rate requested by the user equipment, ii) a second step during which the MeNB sends a resource request, including data defining at least complementary radio resources to be allocated, E-RAB parameters, TNL address information, user equipment capabilities, current radio resource configuration for the user equipment, and a user equipment history cell information, to the chosen SeNB, and a third step during which the chosen SeNB determines from these received data and from its not yet allocated radio resources if it can allocate the requested complementary radio resources for the user equipment and how to set corresponding radio parameters.

Abstract: A method of facilitating coordinated multi-point communication (CoMP) in a wireless communications network including at least a first base station (BS) and a second BS, a plurality of user equipment (UEs) being associated with the second BS, includes generating, at the first BS, a status request message for requesting the second BS to report one or more types of status information, the status request message including at least one of an aggregation indicator and conditional reporting indicator, the aggregation indicator specifying whether the second BS is to report individual measurements or aggregated measurements to the first BS, the conditional reporting indicator indicating to the second BS to report measurements corresponding to the one or more types of resource status information to the first BS only when one or more conditions are met; and sending the status request message to the second BS.

Abstract: Methods of controlling a network node, network nodes and a computer program product are disclosed. A method of controlling a network node includes, upon determining a proposed change to characteristics of the network node, providing a first indication of the proposed change to other network nodes within a predefined network node cluster of which the network node is a member; and, in the absence of a second indication from the other network nodes within the network node cluster rejecting the proposed change to the characteristics of the network node, making the proposed change to the characteristics of the network node.

Abstract: A method of facilitating coordinated multi-point communication (CoMP) in a wireless communications network including at least a first base station (BS) and a second BS, a plurality of user equipment (UEs) being associated with the second BS, includes generating, at the first BS, a status request message for requesting the second BS to report one or more types of status information, the status request message including at least one of an aggregation indicator and conditional reporting indicator, the aggregation indicator specifying whether the second BS is to report individual measurements or aggregated measurements to the first BS, the conditional reporting indicator indicating to the second BS to report measurements corresponding to the one or more types of resource status information to the first BS only when one or more conditions are met; and sending the status request message to the second BS.

Abstract: One embodiment of a method for inter-base station signaling includes receiving, at a first base station, first information from a second base station. The first information indicates commitments regarding transmission power by the second base station. The embodiment further includes determining, at the first base station, whether the second base station will follow the commitments indicated in the first infatuation based on second information. The second information indicates for at least one of the first and second base stations which subframes in a series of subframes will be special subframes. Each special subframe has at least one of less transmit power than a maximum transmission power and less data than a fully loaded subframe.

Abstract: Methods of controlling a network node, network nodes and a computer program product are disclosed. A method of controlling a network node, comprises the steps upon determining a proposed change to characteristics of said network node, providing a first indication of said proposed change to other network nodes within a predefined network node cluster of which said network node is a member; in the absence of a second indication from said other network nodes within said network node cluster rejecting said proposed change to said characteristics of said network node, making said proposed change to said characteristics of said network node.

Abstract: One embodiment of a method for inter-base station signaling includes receiving, at a first base station, first information from a second base station. The first information indicates commitments regarding transmission power by the second base station. The embodiment further includes determining, at the first base station, whether the second base station will follow the commitments indicated in the first infatuation based on second information. The second information indicates for at least one of the first and second base stations which subframes in a series of subframes will be special subframes. Each special subframe has at least one of less transmit power than a maximum transmission power and less data than a fully loaded subframe.

Abstract: An optical resonant cavity (50) defined between two mirrors (13′, 40), one of which (40) is a variable pitch Bragg reflector grating, is characterized in that a parameter CS of variation of the Bragg wavelength of the grating is such that the cavity resonates continuously from a first optical frequency to a second optical frequency higher than the first optical frequency. The invention can be used in particular to produce broadband band-pass filters with steep flanks, broadband amplifiers with no gain fluctuation, and continuous emission spectrum lasers and light-emitting diodes.

Abstract: An optical resonant cavity (50) defined between two mirrors (13′, 40), one of which (40) is a variable pitch Bragg reflector grating, is characterized in that a parameter CS of variation of the Bragg wavelength of the grating is such that the cavity resonates continuously from a first optical frequency to a second optical frequency higher than the first optical frequency. The invention can be used in particular to produce broadband band-pass filters with steep flanks, broadband amplifiers with no gain fluctuation, and continuous emission spectrum lasers and light-emitting diodes.

Abstract: The invention relates to modulator of the Mach-Zehnder type in which an optical wave source is coupled to an optical waveguide separating through a coupler (2) into two branches (B1, B2) which recombine, the branches being respectively provided with electro-optical modulators (4). According to the invention, the coupler (2) has an adjustable coupling ratio, regulation means being provided for adjusting the said coupling ratio following the application of at least one signal (V) to at least one of the electro-optical modulators (4) so that the output optical powers of the branches (B1, B2) are respectively equal for destructive interference conditions and for constructive interference conditions. These regulation means comprise at least one regulation electrode (5). The invention applies principally to optical signal transmission systems.

Abstract: The device comprises a parallel input microguide (2) and output microguide (5) between which a flat guide is arranged forming a transition zone (10). Coupling between the flat guide and the microguides is achieved by an optical tunnel effect. The transition zone comprises at least two zones, a reference zone (10a) and an interaction zone (10b). The interaction zone (10b) is formed by depositing a superstrate whose optical coefficient, or thickness, is sensitive to the medium to be studied. The light beam transmitted by the input microguide to the flat guide is divided into a reference beam passing through the reference zone (10a) and a measurement beam passing through the interaction zone (10b). The measurement and reference beams interfere in the output microguide (5). Depending on the geometrical shape of the reference and interaction zones, the device constitutes a double wave or a multiple wave interferometer. Such a device is used to achieve sensors for applications in physics, chemistry and biology.