Alcatel

Motorola Corporation

Nortel Networks Corporation

Alcatel Telspace

Apple Inc.

Motorola Mobility LLC

Alcatel Italia S.p.a.

Alcatel Thomson Faisceaux Hertziens

Alcatel Transmission Par Faisceaux Hertziens

Societe Anonyme Dite Alcatel Telspace

Pierre Roux

Thierry Lucidarme

Nidham Ben Rached

Rossano Marchesani

Alejandro De Hoz Garcia-Bellido

Christophe Cordier

Marco Fratti

Denis Fauconnier

Madjid F Nakhjiri

Juing Fang

Georges Martinez

Cédric Bourgoin

Jean-Fran&ccedil;ois Houplain

Jean-Francois Houplain

Christophe Beaujean

Gilles De Villenaut

A communication system () is provided that comprises a Radio Access Network () having a Radio Network Controller (RNC) () coupled to each of a cellular Node B () and a Digital Broadcasting Video-Handhelds (DVB-H) Node B (). When the communication system delivers low rate Multimedia Broadcast/Multicast Service (MBMS) user information, the user information is conveyed via the cellular Node B and a low data rate channel. When the communication system delivers high rate MBMS user information, the user information is conveyed via the DVB-H Node B and a high data rate channel. Thus the communication system provides high rate MBMS data services without imposing the system capacity constraints resulting from the employment of HSDPA by a cellular Node B.

Method and apparatus for delivery of high rate data as part of a multimedia broadcast/multicast service

Parameters for the propagation channels between each mobile terminal (A,B) and several fixed transceivers () are measured and a report message transmitted to a radio network controller (), indicating at least one part of the measured parameters. The radio network controller processes the report messages. The parameters measured for each fixed transceiver are a propagation profile, including at least one propagation path associated with a reception energy and the parameters given in the report messages for at least one transceiver, comprise data on the energetic distribution in the propagation profile, taken into account by the radio network controller in processing.

Method for monitoring radio equipment for communication between a mobile terminal and a cellular infrastructure with spread spectrum and arrangement for performing said method

Parameters for the propagation channels between each mobile terminal (A,B) and several fixed transceivers () are measured and a report message transmitted to a radio network controller (), indicating at least one part of the measured parameters. The ratio network controller processes the report messages. The parameters measured for each fixed transceiver are a propagation profile, including at least one propagation path associated with a reception energy and the parameters given in the report messages for at least one transceiver, comprise data on the energetic distribution in the propagation profile, taken into account by the radio network controller in processing.

Method for monitoring radio equipment for communication between a mobile terminal and a cellular infrastructure with spectrum dispersion and arrangement for performing said method

A heterogeneous communication system comprises a plurality of heterogeneous access networks and a core network connecting the heterogeneous access networks. An admission server of the core network receives resource indications indicative of an estimated resource usage for a given communication service and a given access point of an access network. The admission server furthermore determines and stores current resource availability indications for access points. When a communication session request comprising a communication service indication and an access point identification is received, the admission server determines an estimated resource requirement for the communication sessions based on the resource indications. The admission server then determines whether to allow the communication session dependent on the resource availability for the access point and the estimated resource requirement for the communication service.

Admission control for a heterogeneous communication system

The invention provides for secure end-to-end user authentication by a remote server communicating with a communication device. The communication device further communicates with an authentication device, which provides a user authentication message to the communication device for forwarding to the remote server. The authentication device comprises a data store for storing user authentication credentials. A user authentication processor performs a local authentication of a user of the authentication device in response to a user input. An authentication processor generates the authentication message if the user authentication is valid. The authentication processor implements a cryptographic function based on the user authentication credentials. A transmitter then transmits the authentication message to the at least one communication device.

Method and apparatus for user authentication

An apparatus and method is provided for a cellular radiocommunication using macrodiversity techniques. The method includes the transmission, to a first radio network controller, of a first frame of hard bits from a base node whose accuracy indicator has a so-called 'good' level, if at least one accuracy, indicator has the good level, the transmission, to the first radio network controller if no accuracy indicator has the said good level, of each of the first frames of soft bits from at least two base nodes and the combination in the first radio network controller of the transmitted frames of soft bits in order to generate a second frame of hard bits.

Communication method, radio network controller and base node for implementing this method

A method of adjusting a signal quality target at a transceiver of a CDMA radio communication network. The adjustment of the signal quality target ensures that a predefined frame quality target is reached in power control procedure. According to the invention, the method consists in computing for a received frame, a frame quality indicator depending on signal quality indicators measured at slot level in the received frame. The method further comprises a step of adjusting the signal quality target according to the difference between the frame quality indicator and the predefined frame quality target.

Method of adjusting a signal quality target to be reached in power control procedures in a CDMA radio communication network and a corresponding transceiver

The invention relates to a method of resolving collisions between at a receiver, and also to such a receiver. According to the invention, the method performed by the receiver processes the signal representative of a collision. The method consists in particular in selecting signal &ldquo;fingers&rdquo; having a power level greater than a threshold value, and in combining said fingers with one another to find configurations for which the packets that result from the combination are error-free, thereby enabling the transmitters from which the colliding packets originated to be identified.

Method of resolving physical layer collisions in a random access protocol an a corresponding receiver

This invention relates to a method of modifying a current transmitted power distribution used by at least two base stations transmitting a signal to a mobile station on the macro-diversity principle. A mobile station using this method is also disclosed. According to the invention, the method consists substituting the current transmitted power distribution by a new transmitted power distribution, selected among several hypothetical transmitted power distributions, under the condition that this new transmitted power distribution provides a better quality of service at the mobile station than the current one.

Method to modify a current transmitted power distribution in case of macro-diversity and corresponding mobile station

The invention provides a block-encoded modulation scheme using multi-level partitioning techniques. This scheme is made transparent to phase ambiguities of &plusmn;&pgr;/2 and of &pgr;, by means of differential encoding and appropriate mapping, it is applicable to 16-QAM modulation, and it has theoretical encoding gain that is optimal for the rate of the code. The decoder associated with this scheme uses the Wagner algorithm which is much less complicated to implement than the Viterbi algorithm or than the Reed-Solomon algorithm.

Encoding/decoding system using 16-QAM modulation encoded in multi-level blocks

Coherent demodulation is effected in single-channel and multi-channel coherent demodulation devices without any knowledge of the transmitted signal (i.e. without any pilot signal). The phase shift is estimated by applying a predetermined function to produce a signed value from the argument of a summed signal, the summed signal being itself obtained from the received signal (by quadrature demodulation, complex despreading and summing over N samples). The phase shift estimate is used in a phase-locked loop so that the system converges towards a null error. The residual static phase ambiguity introduced by application of the predetermined function is resolved. A plurality of such single-channel and multi-channel coherent demodulation devices is used in a receiving system using a plurality of diversity paths.

Single-channel and multi-channel coherent demodulation devices with no

The invention relates to apparatus for synchronizing the phase of a digital signal constituted by two digital components to be corrected defining two samples of a received signal at each symbol time, said apparatus serving to feed a regenerator for regenerating the signal in baseband by sampling and threshold decision-taking, said apparatus including: a first phase-locked loop (31) driven by a first broadband phase-error integrator (37), said first loop (31) being fed with the input signal (30) of the apparatus, and supplying a first phase error estimate (36); and an auxiliary second phase-locked structure (32) driven by re-processing means (38) for re-processing said first phase error estimate (36) established by said first phase-locked loop (31), and outputting a phase synchronized signal fed to an output regenerator (34) for regenerating the signal in baseband; said auxiliary second phase-locked structure (32) being fed with said input signal (30) of the apparatus via delay means (35).

Robust phase estimator and recoverer for digital signals affected in

The invention relates in particular to a method of compensating differences in group propagation times between first and second analog filters of a transmitter of signals in phase quadrature, and between third and fourth analog filters of a receiver of signals in phase quadrature. The method consists in: applying the output signals from the first and second filters respectively to the third and fourth analog filters so as to measure a time difference .DELTA.1 equal to: �Tx+Rx!-�Ty+Ry! where Tx, Rx, Ty, and Ry are respective propagation times for the signals through the first, second, third, and fourth filters; applying the output signals from the first and second filters respectively to the fourth and third analog filters so as to measure a time difference .DELTA.2 equal to: �Ty+Rx!-�Tx+Ry! and determining weighting coefficients from the differences .DELTA.1 and .DELTA.2 for application to digital filters in series with said analog filters so as to compensate the group propagation time differences respectively between the first and second analog filters and between the third and fourth analog filters.

Method of compensating differences in group propagation times between

A regenerator for regenerating received framed digital signals including justification bit includes an arrangement associating justification mechanisms with the operation of a fractionally spaced self-adaptive equalizer which is modified to accept instructions to rotate its coefficients. The regenerator is particularly suitable for microwave digital transmission. Jitter does not accumulate in the regenerator which may be implemented entirely in digital circuits.

Framed digital signal regenerator suitable for microwave digital

A non-intrusive diagnostic system for a transmission channel for a digital modem is appllied to a demodulator-regenerator, and, in each of the channels (14, 15) for the signals demodulated into baseband, it includes an analog-to-digital converter (16, 17) which is clocked by a clock signal at a frequency equal to a multiple of the symbol rate (H), said multiple being not less than twice said rate.

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Argenteuil, France

Pierre Roux