Abstract: The present invention relates to a method for use in controlling the emission power of a transceiver which is in communication with another transceiver via a communication system, said method including the steps of measuring the amplitude or the power of the signal received by said transceiver and of evaluating a power control command which is then used to command the emission power of said transceiver according to said control command signal. According to the invention, the method includes the steps of evaluating the fast fading duration of the received signal on basis of said amplitude or power measurement and of deducing the power control command from said fast fading duration.

Abstract: Method for transmitting a word representative of transmission parameters respectively allocated to the mobile stations in communication with a base station of a mobile telecommunication system, wherein it includes the step of: including, in each transmission burst a midamble resulting from the sum of selected midambles among all the available midambles, said selection being done by said base station in relation with a word so that a selected midamble corresponds to a binary element of said word equal to a first value and a non-selected midamble corresponds to a binary element of said word equal to a second value, and considering a word the elements of which are in one-to-one relationship with the temporal positions of the estimations respectively corresponding to said available midambles.

Abstract: A channel estimation sequence including two concatenated sequences (S and G) respectively including two complementary sequences (s and g), which are extended periodically by extensions (esf, esd and egf, egd) which constitute copies of their starting part and/or ending part and which are respectively concatenated at the end and/or start of the sequence. Also, a channel estimation method including transmitting the channel estimation sequence and receiving and correlating the received signal with the first complementary sequence (s), correlating the received signal with the second complementary sequence (g), adding the results of the two correlations.

Abstract: A channel estimation sequence including two concatenated sequences (S and G) respectively including two complementary sequences (s and g), which are extended periodically by extensions (esf, esd and egf, egd) which constitute copies of their starting part and/or ending part and which are respectively concatenated at the end and/or start of the sequence. Also, a channel estimation method including transmitting the channel estimation sequence and receiving and correlating the received signal with the first complementary sequence (s), correlating the received signal with the second complementary sequence (g), adding the results of the two correlations.

Abstract: Method for transmitting an information representative of the number of spreading codes allocated to the mobile stations in communication with a base station of a mobile telecommunication system,

Abstract: A method for estimating responses in a transmission or telecommunications channel in which a composite signal of complementary sequences such as: &PHgr;s,s(n)+&PHgr;g,g(n)=k·&dgr;(n) is constructed and in which a pair of complementary sequences s(n) and g(n) is transmitted after having multiplexed the pair of complementary sequences in phase.

Abstract: A method of estimating qualities of a transmission or telecommunications channel involves using a pair of complementary sequences s(n) and g(n), with n=0, 1, . . . , N−1, which have the property that the sum of their auto-correlations is a perfect Dirac function (that is, &PHgr;s,s(n)+&PHgr;g,g(n)=k·&dgr;(n)). A composite signal made up of two complementary sequences s(n) and g(n) is used, after having time multiplexed these two sequences in such a way as to exploit the property &PHgr;s,s(n)=&PHgr;g,g(n)=k·&dgr;(n). The composite signal is made up of two sequences which are concatenated with, between them, a guard interval of a duration greater than or equal to the length of the impulse response of the channel to be estimated.

Abstract: Method for transmitting a word representative of transmission parameters respectively allocated to the mobile stations in communication with a base station of a mobile telecommunication system, wherein it includes the step of: including, in each transmission burst a midamble resulting from the sum of selected midambles among all the available midambles, said selection being done by said base station in relation with a word so that a selected midamble corresponds to a binary element of said word equal to a first value and a non-selected midamble corresponds to a binary element of said word equal to a second value, and considering a word the elements of which are in one-to-one relationship with the temporal positions of the estimations respectively corresponding to said available midambles.

Abstract: Method for transmitting a word representative of transmission parameters respectively allocated to the mobile stations in communication with a base station of a mobile telecommunication system, wherein it includes the step of: including, in each transmission burst a midamble resulting from the sum of selected midambles among all the available midambles, said selection being done by said base station in relation with a word so that a selected midamble corresponds to a binary element of said word equal to a first value and a non-selected midamble corresponds to a binary element of said word equal to a second value, and considering a word the elements of which are in one-to-one relationship with the temporal positions of the estimations respectively corresponding to said available midambles.

Abstract: Method for transmitting an information representative of the number of spreading codes allocated to the mobile stations in communication with a base station of a mobile telecommunication system. The method forms a word to be transmitted, the content of which is representative of the number of spreading codes allocated. In each transmission burst a general midamble resulting from the sum of selected midambles among all the available midambles is included. The selection is done by the base station in relation with the transmitted word so that a selected midamble corresponds to a binary element of the transmitted word equal to a first value and a non-selected midamble corresponds to a binary element of the transmitted word equal to a second value. A received word is considered, the elements of which are in a one-to-one relationship with the temporal positions of the estimations respectively corresponding to the available midambles.

Abstract: The present invention concerns a channel estimation sequence (SE) intended to be transmitted by a transmitter (1) to a receiver (2) via a channel (3) so that it can implement a channel estimation method, the said channel estimation sequence consisting of two concatenated sequences (S and G) respectively consisting of two complementary sequences (s and g), the said channel estimation method consisting, on the transmitter side, of transmitting the said channel estimation sequence and, on the receiver side, of a correlation process consisting of correlating the said received signal with the first (s) of the said complementary sequences, correlating the said received signal with the second (g), delayed one, of the said complementary sequences, adding the results of the said two correlations, and deducing the said characteristics of the said channel (3) from the result of the said correlation process.

Abstract: The present invention concerns a channel estimation sequence (SE) intended to be transmitted by a transmitter (1) to a receiver (2) via a channel (3) so that it can implement a channel estimation method, the said channel estimation sequence consisting of two concatenated sequences (S and G) respectively consisting of two complementary sequences (s and g), the said channel estimation method consisting, on the transmitter side, of transmitting the said channel estimation sequence and, on the receiver side, of a correlation process consisting of correlating the said received signal with the first (s) of the said complementary sequences, correlating the said received signal with the second (g), delayed one, of the said complementary sequences, adding the results of the said two correlations, and deducing the said characteristics of the said channel (3) from the result of the said correlation process.

Abstract: Method for transmitting an information representative of the number of spreading codes allocated to the mobile stations in communication with a base station of a mobile telecommunication system,

Abstract: A synchronization signal used to synchronize base stations in a mobile radio telecommunication system having a first sequence followed by a second sequence, the first and second sequences being polyphase complementary sequences configured such that when the synchronization signal is correlated with a replica of the first sequence and a replica of the second sequence, and the correlation results are added exemplary synchronization results are obtained.

Abstract: Method for transmitting a word representative of transmission parameters respectively allocated to the mobile stations in communication with a base station of a mobile telecommunication system, wherein it includes the step of: including, in each transmission burst a midamble resulting from the sum of selected midambles among all the available midambles, said selection being done by said base station in relation with a word so that a selected midamble corresponds to a binary element of said word equal to a first value and a non-selected midamble corresponds to a binary element of said word equal to a second value, and considering a word the elements of which are in one-to-one relationship with the temporal positions of the estimations respectively corresponding to said available midambles.

Abstract: Method for dynamic allocation of transmission resources to a plurality of communications between a base station and a plurality of mobile terminals, each resource consisting of a plurality of possible values, an allocation controller associated with the base station, referred to as a fast allocation controller, being able to allocate to the said communications only certain combinations of possible values, referred to as available resources, the said fast allocation controller generating a pseudo-random sequence and allocating to a communication at least one available resource according to a value of the said pseudo-random sequence.

Abstract: The present invention concerns a method of transmitting a synchronization signal during a synchronization time slot of a system for telecommunication by mobile stations of the time division duplex (TDD) type where the data are transmitted in frames consisting of time slots, the said synchronization signal including a synchronization sequence.

Abstract: The present invention concerns a channel estimation sequence (SE) intended to be transmitted by a transmitter (1) to a receiver (2) via a channel (3) so that it can implement a channel estimation method, the said channel estimation sequence consisting of two concatenated sequences (S and G) respectively consisting of two complementary sequences (s and g), the said channel estimation method consisting, on the transmitter side, of transmitting the said channel estimation sequence and, on the receiver side, of a correlation process consisting of correlating the said received signal with the first (s) of the said complementary sequences, correlating the said received signal with the second (g), delayed one, of the said complementary sequences, adding the results of the said two correlations, and deducing the said characteristics of the said channel (3) from the result of the said correlation process.

Abstract: Method of synchronising base stations in a mobile radio telecommunication system, characterised in that a first base station transmits a synchronisation sequence having a first sequence followed by a second sequence, the said first and second sequences being obtained from polyphase complementary sequences and in that at least one second base station effects the correlation of the said synchronisation sequence with a replica of the first sequence and a replica of the second sequence, the correlation results then being added in order to provide synchronisation information.

Abstract: The invention relates to a method of distributing communications established by radio-communication terminals, within a geographic cell of a radio-communication network, the geographic cell being sub-divided into at least two geographic sectors.