Alcatel Lucent

Alcatel

Hardy Halbauer

Jürgen Otterbach

Bozo Cesar

Stephan Saur

Thorsten Wild

Hajo Bakker

Robert Fetscher

Volker Braun

Uwe Doetsch

Mark Doll

Oliver Stanze

Peter Jaenecke

Bernd Gloss

Anton Ambrosy

Hajo-Erich Bakker

Joerg Schaepperle

Osman Aydin

Gabriele Schwoerer

Federico Boccardi

Paolo Baracca

Cornelis Hoek

Frank Schaich

Danish Aziz

Michael Tangemann

Yejian Chen

Karsten Oberle

Andreas Rueegg

Gunther Jacob

J&uuml;rgen Otterbach

J&uuml;rgen Enssle

Jakob R Hoydis

Cesar Bozo

It is proposed a device to process data to be transmitted via a first radio module of a radio communications network, in which data to be transmitted is mapped on subcarriers and in the radio module subsequently up-converted to a radio frequency higher than the subcarrier frequencies, wherein the subcarriers are grouped into frequency subbands, and wherein at least one subband is scalable with at least one subband parameter, wherein a subband parameter is in particular a subcarrier spacing, and wherein in at least one subband at least two different parameters, in particular subcarrier spacings, can be used.

Device to process data to be transmitted via a first radio module

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

Embodiments provide beamforming apparatuses, methods and a computer programs for a base station transceiver and a mobile transceiver. An apparatus () operable in a base station transceiver () of a mobile communication system comprises a transceiver module () comprising interfaces to a plurality () of antennas. The transceiver module () is operable to subdivide the plurality () of antennas in a plurality of subgroups using the interfaces, and to form a first beam pattern () using one or more antennas of a subgroup. The apparatus () further comprises a control module (), which is operable to transmit a synchronization signal using the transceiver module () and the first beam pattern (). The control module () is further operable to receive a response signal after transmission of the synchronization signal from a mobile transceiver () using the transceiver module (), to determine a second beam pattern () based on the response signal from the mobile transceiver (). The second beam pattern () has a higher antenna gain than the first beam pattern (), and to transmit a signal to the mobile transceiver () using the second beam pattern () and the transceiver module (). An apparatus () operable in a mobile transceiver () of a mobile communication system comprises a transceiver module () comprising interfaces to a plurality of antennas (), and a control module () operable to determine a first set of beam patterns () based on the plurality of antennas (), to receive a signal from a base station transceiver () using a first beam pattern from the first set of beam patterns () using the transceiver module (). The control module () is further operable to determine a second set of beam patterns () based on the plurality of antennas (), the second set of beam patterns () comprising more beam patterns than the first set of beam patterns (), and to transmit a signal to the base station transceiver () using a second beam pattern from the set of second beam patterns () and using the transceiver module ().

Beamforming apparatuses, methods and computer programs for a base station transceiver and a mobile transceiver

A sounding method in a cellular wireless communication system, comprising at least one mobile station and at least two base stations. One base station is a serving base station for the mobile station and the at least one further base station is a neighboring base station. The serving base station generates a schedule for measurement signals and transmits said schedule to the mobile station and to the neighboring base station. The mobile station transmits measurement signals in accordance with the schedule to the serving base station and to the neighboring base station. Furthermore, the neighboring base station calculates a mean channel state for the uplink channel from the mobile station to itself and transmits the mean channel state to at least one further base station, so that said base station can be provided with channel estimations for uplink channels between the mobile station and all base stations.

Measurement in radio communication systems

The invention relates to a base station () for a cellular communications network, wherein said base station () is configured to control at least one antenna system () which comprises a plurality of antenna elements (&#x3b7;), wherein at least two antenna elements () are arranged at different vertical positions (pa, pb) with reference to a virtual horizontal plane (P). The base station () is further configured to transmit specific pilot signals (D, D) on orthogonal radio resources associated with said specific pilot signals (D, D) via different antenna elements ().

Base station and method of operating a base station

The present invention relates to a method for reducing interference in the downlink direction of a cellular radio communication system comprising base stations communicating with terminals using a frame structure showing a time and frequency extension, said frame comprising a preamble portion and at least one data portion, said terminals being adapted to receive frames for which the receive power of said at least one data portion is varying in a predefined range relative to the receive preamble power of said preamble portion, According to the present invention, the method comprises the steps of:

Method for reducing interference in the downlink direction of a cellular radio communication network and corresponding base station

The present invention relates to a system comprising a processing unit, a plurality of access nodes adapted to communicate with a plurality of mobile terminals and wireless backhaul links adapted to connect said access nodes and a wireless backhaul termination interfacing with a core network, According to the present invention:&#x2014;said processing unit determining dynamically out of said plurality of access nodes, access nodes to remain unused and, access nodes to be used for supporting communication of said mobile terminals, said determination taking into account at least one optimisation criterion consisting in reducing the interference between active access nodes and mobile terminals; said processing unit determining a mapping between said mobile terminals and said active access nodes,&#x2014;said wireless backhaul links consisting in point-to-multipoint connections between said wireless backhaul termination and said access nodes.

Mobile network, corresponding access node, processing unit and method for operating the mobile network

The present invention relates to a method for allocating frequency subchannels on an air interface of a wireless communication system to users for a predefined time period, a plurality of frequency subchannels being available for communicating between a base station belonging to a cell and users under the coverage of said cell requiring a frequency subchannel allocation. According to the present invention, the method comprises the steps of:

Method for allocating frequency subchannels on an air interface of a wireless communication system and corresponding radio resource allocation module

The present invention relates to a method for scheduling transmissions in a radio communication system comprising a plurality of base stations and a plurality of terminals, a base station being associated to a sector and transmitting/receiving data to/from terminals located in said sector. According to the present invention, the method comprises the steps of: &#x2014;determining an area around each given sector, said area comprising a set of sectors, &#x2014;allocating to said sectors in said area a scheduling priority chosen among at least two different scheduling priorities, &#x2014;scheduling decisions in a sector having a lower scheduling priority than a sector belonging to said area depending on scheduling decisions made for said sector with higher scheduling priority, said scheduling decisions made in said sector with higher scheduling priority being reported by said base station associated to said sector with higher scheduling priority to said base station associated to said sector with lower scheduling priority.

Method for scheduling terminals in a radio communication network, and corresponding base station

The invention relates to a multicarrier mobile device comprising a receiver () for receiving a first multicarrier signal being associated with a first communication cell and a second multicarrier signal being associated with a second communication cell, an extractor () for extracting a first signal portion from the first multicarrier signal and for extracting a second signal portion from the second multicarrier signal and a processor () for determining a first interference power on the first signal portion and the second interference power on the second signal portion.

Multicarrier mobile device

A synchronization procedure for a multipoint-to-point CDMA network (), which minimizes the influence on the information transmission. Instead of interleaving communications and synchronization signals timewise, a simultaneous emission is proposed, in which the synchronization signals are superimposed on the communications signals. The synchronization signals are coded with a special synchronization code (), which does not correspond to the CDMA communications code of the information signals, e.g Barker code. In addition, the synchronization signals are sent at a lower amplitude compared with the communications signals. The synchronization signals are also modulated () prior to sending, in particular using alternating multiplication by +1 and &#x2212;1. On the receiving side (), the synchronization signals are detected by demodulation (), correlation () and subsequent accumulation. The transmission capacity for the communications signals is maximized by this procedure and the influence of the synchronization signals on the communications signals minimized.

Transmitting and receiving device for a multipoint-to-point network

It is the object of the invention to make available a method of transferring user data packets from a terminal to a mainframe of an S-CDMA point-to-multipoint system, in which the data transfer is optimized. The method includes the steps of a repeated transmission of reference data packets coded with pilot codes for the duration of the connections between terminals and a mainframe, wherein the reference data packets contain previously known information, and the transmission of user data packets coded with communication codes include the user information to be transferred. In a preferred embodiment of the invention the user data packets are coded synchronously in time to the reference data packets, superimposed on these, and then modulated. Each terminal is allocated a pilot code, and at least one communication code.

Method of transferring user data packets

A master clock signal generated at the center ( ) of a bidirectional point-to-multipoint network is transmitted in the form of time stamps in an MPEG-2 data format over the downstream channel of the network to a plurality of transmitting/receiving facilities ( ). Each transmitting/receiving facility ( ) derives the clock signal for the upstream channel from the master clock signal and a local clock signal generated by a reference clock ( ). The center ( ) compares the clock signal from each transmitting/receiving facility with the master clock signal and derives from the result of this comparison digital phase correction information individual to each transmitting/receiving facility ( ), which it transmits to the respective transmitting/receiving facility ( ) in the MPEG-2 data stream. The respective transmitting/receiving facility ( ) uses the phase correction information to control the clock signal for the upstream channel in a numerically controlled oscillator ( ).

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Ettlingen, Germany

Hardy Halbauer