Alcatel Lucent

Alcatel

Nokia Technologies Oy

Avanex Corporation

Anton Ambrosy

Danish Aziz

Hajo Bakker

Hajo-Erich Bakker

Dietrich Zeller

Rolf Sigle

Alexis Lestra

Harald Eckhardt

Sigrun Schneider

Stephen Kaminski

Volker Braun

Uwe Doetsch

Peter Kersten

Oliver Blume

Hardy Halbauer

Siegfried Klein

Wieslawa Wajda

Gerhard Seibold

Antoni Picard

Edgar Wolfram Kuhn

Jens Schulze

J&ouml;rg Reinhardt

Edgar Kühn

Dietrich Karl Zeller

Hajo Erich Bakker

A method of wireless data transmission at a first radio access point, including detecting a degradation of a first radio link established for a first frequency band between the first radio access point and a user equipment, and sending, addressed to a network entity, information to trigger a handover or handover decision of the wireless data transmission from the first radio link of the first radio access point operating in the first frequency band to a second radio link of a second radio access point operating in the first frequency band depending on the result of the detection.

Handover method for wireless data transmission system

The invention relates to a terminal () for a cellular communications network (). The terminal is configured to maintain a first set (S) of at least n radio cells, wherein n is equal to or greater than three, wherein a quality measure (q) value of each of the n radio cells, which depends on a received signal power associated with reference signals transmitted in said cells and received by said terminal (), exceeds a threshold. The terminal further determines whether a quality measure value of a further radio cell, which is not comprised in the first set, exceeds the quality measure value of the radio cell comprised in the first set with the m-th best quality measure value, m ranging from 1 to n&#x2212;1, by a predetermined amount. If the quality measure value of the further radio cell (c) exceeds the quality measure value of the m-th best radio cell, modification of the first set is arranged, whereby a second set (S) is obtained. The second set comprises the further radio cell.

Terminal, method of operating a terminal, transmission coordinator device, base station and method of operating a transmission coordinator device

The present invention relates to a method for acquiring radio measurements in a mobile communication system. In accordance with one embodiment of the invention, the method comprises the steps of. &#x2014;within a serving cell (A) operated by a radio access node (eNBA) and serving a particular user equipment (UEX), sending measurement control information (meas_ctrl_info) from the radio access node to the particular user equipment whereby the particular user equipment is configured to perform radio measurements, &#x2014;within a further serving cell (B) operated by a further radio access node (eNBB) and subsequently serving the particular user equipment, sending a measurement report (meas_report) from the particular user equipment to the further radio access node comprising measurement data (meas_data) as configured by the serving cell and a cell identifier (PCIA) of the serving cell, &#x2014;transferring the measurement data from the further radio access node back to the radio access node. The present invention also relates to a user equipment and to a radio access node operable to form part of a mobile communication system.

UE measurements for hot spot detection

A computer implemented method of operating a base station of a wireless communication network, wherein the method comprises:

Method for detecting pci collisions

The invention relates to a method comprising the following steps:&#x2014;measuring (S) a traffic load;&#x2014;determining (S), if the traffic load is lower than a first threshold;&#x2014;decreasing (S) a maximum used output load of an amplifier of the base station, if the traffic load is lower than the first;&#x2014;adjusting (S) an operation point () of the amplifier, if the traffic load is lower than the first threshold;&#x2014;determining (S), if the traffic load is higher than a second threshold;&#x2014;increasing (S) the maximum used output load of the amplifier, if the traffic load is higher than the second threshold; and&#x2014;adjusting (S) the operation point of the amplifier, if the traffic load is higher than the second threshold.

Optimizing power consumption of a base station

The present invention relates to a method for acquiring radio measurements in a mobile communication system. In accordance with one embodiment of the invention, the method comprises the steps of.&#x2014;within a serving cell (A) operated by a radio access node (eNBA) and serving a particular user equipment (UEX), sending measurement control information (meas_ctrl_info) from said radio access node to said particular user equipment whereby said particular user equipment is configured to perform radio measurements,&#x2014;within a further serving cell (B) operated by a further radio access node (eNBB) and subsequently serving said particular user equipment, sending a measurement report (meas_report) from said particular user equipment to said further radio access node comprising measurement data (meas_data) as configured by said serving cell and a cell identifier (PCIA) of said serving cell,&#x2014;transferring said measurement data from said further radio access node back to said radio access node. The present invention also relates to a user equipment and to a radio access node operable to form part of a mobile communication system.

The invention relates to a method of communicating in a mobile telecommunication network (), the mobile telecommunication network comprising a plurality of cells (), wherein resource blocks are used for transmitting data in the mobile telecommunication network, and wherein the method comprises:&#x2014;dividing (S) a resource into at least a first plurality of resource blocks and a second plurality of resource blocks, wherein the resource blocks of the first plurality do not overlap with the resource bocks of the second plurality;&#x2014;assigning (S) the first plurality of resource blocks to a first group of cells and assigning the second plurality of resource blocks to a second group of cells;&#x2014;scheduling (S) first data transmissions in the first group of cells on the first plurality of resource blocks;&#x2014;scheduling (S) second data transmissions in the second group of cells on the second plurality of resource blocks;&#x2014;scheduling (S) third data transmissions in the first group of cells on the second plurality of resource blocks, when all resource blocks of the first plurality are already used for data transmissions; and&#x2014;scheduling (S) fourth data transmissions in the second group of cells on the first plurality of resource blocks, when all resource blocks of the second plurality are already used for data transmissions.

Scheduling data transmissions in a mobile telecommunication network

A computer implemented method of operating a base station of a wireless communication network, wherein the method comprises: comparing a number of missing context release messages () with a first criterion; &#x2014;comparing the error rate of connection reestablishment messages () with a second criterion; executing a cell global identity search algorithm () if at least one of the first and the second criterion is fulfilled, wherein the cell global identity of at least one cell with the physical cell identity of the cell where the criterion was fulfilled is requested via an automatic neighbor relation measurement, and wherein a conflict of physical cell identities is detected and reported to an information algorithm () when for the physical cell identity at least two cell global identities are found; &#x2014;an information algorithm for informing a central network element () and/or at least one base station () of the mobile communication network about a conflict of physical cell identities when a conflict of physical cell identities is reported to the information algorithm; and &#x2014;initiating a reassignment of at least one physical cell identity.

Method for detecting PCI collisions

The invention relates to methods of using a trainable software module used in the handover procedure employing the location based information for the self optimization of wireless communication networks, in particular for the self optimization of cellular mobile networks. Embodiments of the invention address the problems of radio link failures and rapid handovers immediately after transferring a wireless appliance from one base station apparatus to the other at certain cell border locations by evaluating which base station apparatus a wireless appliance should have its wireless connection transferred to using either a database or a trainable software module.

Handover method between a preferred base station and alternatives base stations

The invention concerns a method for a handover procedure of a user terminal (UE) on radio interfaces from a source base station (SBS) to a target base station (TBS) whereby the target base station (TBS) sends out user data to the user terminal (UE) before reception of a message indicating the termination of the handover procedure (HO Complete), the user terminal (UE) uses an uplink feedback for sending at least one message (Feedback) associated to the downlink transmission of said user data to the target base station (TBS), and the target base station (TBS) uses said at least one message (Feedback) associated to the downlink transmission of said user data as an indication of the presence of the user terminal (UE) within the range of the target base station (TBS), a base station (BS-BS) and a network (CN) therefor.

Method for handover procedure of user terminal on radio interfaces, a base station and a network therefor

A method for taking a handover decision in a cellular communications system, wherein a communications network detects a need for initiating a handover for at least one mobile device from a source cell to a selected target cell, and further calculates a virtual traffic load indicator for the source cell after a virtual handover execution of the mobile device from said source cell to said target cell, calculates a virtual traffic load indicator for the target cell after a virtual handover execution of the mobile device from said source cell to said target cell, compares the calculated virtual traffic load indicators, and takes a decision to execute or not to execute said handover according to said comparison.

Decision mechanism for handover execution in a cellular radio communications system

An optical module () which contains at least one optical component () whose one optical input/output is directed towards an optical fibre () to which it is to be coupled. At least one additional optical waveguide () is arranged between this optical component () and the optical fibre (). The optical component () is provided with an optical waveguide () whose end (), facing towards the optical fibre (), is tapered or widened for a modal field adaptation. Additionally the end of each interposed optical waveguide () facing towards the optical fibre () is also tapered or widened for a modal field adaptation.

Modal field converter for a highly efficient coupling in optical modules

An optical module ( ) which contains at least one optical component ( ) whose one optical input/output is directed towards an optical fiber ( ) to which it is to be coupled. At least one additional optical waveguide ( ) is arranged between this optical component ( ) and the optical fiber ( ). The optical component ( ) is provided with an optical waveguide ( ) whose end ( ), facing towards the optical fiber ( ), is tapered or widened for a modal field adaptation. Additionally the end of each interposed optical waveguide ( ) facing towards the optical fiber ( ) is also tapered or widened for a modal field adaptation.

The invention relates to a self-centering arrangement of microstructured elements, particularly of microoptical components on a substrate serving as carrier. To provide microoptical components with projections that fit into corresponding recesses is known in the art. The invention provides a way to improve the mutual alignment of components (K,, K,) in that a deformation occurs when projections (Z,, Z,) are inserted into the recesses (A). This deformation may concern the projections or the recesses themselves or a molding material introduced between the projections and the recesses. The deformation improves the self-centering properties; in addition, manufacturing tolerances are more easily compensated. If the element cannot be provided with a suitable projection, an intermediate carrier is used, which is, for example, a plastic element produced by a LIGA process.

Self-centering arrangement of microstructured elements

The invention relates to a substrate (SUB) serving as a support, an optical waveguide (OWL) disposed on the substrate (SUB) and electrical conduction paths (ELB). Conventionally, the electrical conduction paths are placed on a thin insulating layer covering the substrate. According to the invention, the electrical conduction path (ELB) are routed on top of the surface (WOF) of the optical waveguide (OWL). This provides an improved insulation of the electrical conduction paths (ELB); moreover, the substrate surface is better utilized. Preferably, the electrical conduction paths (ELB) which are placed in ramp-like recesses (RA), are routed from the substrate surface (SOF) upwards to the surface (WOF) of the optical waveguide (OWL). The invention can be employed most advantageously proximate to laser bars where several conduction paths which are combined to form coplanar electrical waveguides, are arranged in a tight space.

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Tiefenbronn, Germany

Anton Ambrosy