Alcatel Lucent

Inria

Inria Institut National De Recherche En Informatique Et En Automatique

Eitan Altman

Veronique Capdevielle

Afef Feki

Majed Haddad

Nidham Ben Rached

Laurent Roullet

Frédéric Ratovelomanana

Sreenath Ramanath

Véronique Capdevielle

Nidham Ben Rachec

Veronique Capdeville

A method for estimating the speed of a user equipment connected to a base station of a wireless network, the method comprising the following steps: measuring the power of a signal transmitted between the user equipment and the base station; computing the derivative of the measured signal power with respect to time; computing the standard deviation of the computed derivative; estimating, from previously established reference data, the speed of the user equipment that corresponds to the computed standard deviation, the reference data associating a given user equipment speed with a certain computed standard deviation.

Temporal analysis for user speed estimation in wireless networks

A method for estimating the speed of a user equipment connected to a base station of a wireless network, the method comprising the following steps: &#x2014;performing signal strength measurements (S) of a radio signal transmitted between the user equipment and the base station; &#x2014;performing a spectral analysis () of the signal strength measurements; &#x2014;determining the frequency of a local maximum in the power spectrum of the signal strength measurements; &#x2014;estimating (), from previously established reference data, the speed of the user equipment that corresponds to the determined frequency, the reference data associating a given user equipment speed with a certain determined frequency.

Method and system for user speed estimation in wireless networks

The present invention relates to a radio access arrangement for operating a radio cell (C), and comprising at least one wireless transceiver () configured to set up and operate radio communication channels with mobile devices. In accordance with an embodiment of the invention, the radio access arrangement further comprises speed determination logic () configured to characterize a particular mobile device () as belonging to a high-speed or lower-speed category (HS; LS) according to speed information of the particular mobile device, and a radio resource controller () configured to assign a particular radio communication channel, for communication with the particular mobile device, within a first or second disjoint radio resource partition of the radio cell (B_DLB_ULB_DLB_UL) if the particular mobile device is characterized as belonging to the lower-speed or high-speed category. The radio access arrangement further comprises a transmit power controller () configured to control a transmit power used for communication over the particular radio communication channel as being lower than a first or second substantially higher maximum transmit power level (PTXMAX_DLPTXMAX_ULPTAX_MAX_DLPTXMAX_UL) if the particular radio communication channel is assigned within the first or second radio resource partition respectively, thereby yielding a long-reach radio coverage area () for high-speed mobile devices and a shorter-reach radio coverage area () for lower-speed mobile devices. The present invention also relates to a method for operating a radio cell, and to a method for configuring radio resources of radio cells.

Cell partitioning for high-speed users

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FR

Eitan Altman