US 2004/0171384 A1 · Inter-frequency measurements with mimo terminals

Abstract

The invention is a terminal, system and method for providing inter-frequency and inter-system handovers. A terminal 20′ in accordance with the invention includes at least one radio transceiver including P radio receivers and at least one transmitter (16) with P being an integer at least equal to 2. Each radio receiver includes an antenna (41) which receives M encoded data streams. A terminal controller 18 controls the that at least one radio transceiver. In response to a transmission that the terminal is to operate at least one of the radio receiver chains in at least one frequency band not used to receive the M encoded data streams during at least one identified data frame therein to measure a radio indicator of the at least one frequency band not used to receive the M encoded data streams, the terminal controller causes at least one of the radio receiver chains to be turned to the at least one frequency band during the at least one identified data frame and to make measurements therein and to transmit the measurements with at least one transmitter of the at least one radio transceiver to a station (24).

Claims60

Dependent claims

In a data transmission system including a station which transmits M encoded data streams using M antennas to a terminal and a station controller which controls the station, wherein M is an integer at least equal to 2, the terminal comprising:

at least one radio transceiver including P radio receivers and at least one transmitter with P being an integer at least equal to 2, each radio receiver including an antenna which receives the M encoded data streams and a detecting function which decodes the M encoded data streams into decoded data;
and
a terminal controller which controls the at least one radio transceiver;
and wherein
in response to a transmission from the station that the terminal is to operate at least one of the radio receivers in at least one frequency band not used to receive the M encoded data streams during at least one identified data frame therein to measure a radio indicator of the at least one frequency band not used to receive the M encoded data streams, the terminal controller causes at least one of the radio receivers to be turned to the at least one frequency band during the at least one identified data frame and to make measurements therein and to transmit the measurements with the at least one transmitter of the at least one radio transceiver to the station.

2 more elements

A data transmission system comprising:

a terminal;
a station which transmits M encoded data streams using M antennas to the terminal wherein M is an integer at least equal to 2;
a station controller which controls the station;
the terminal including at least one radio transceiver including P receivers and at least one transmitter, with P being an integer at least equal to 2, each radio receiver including an antenna which receives the M encoded data streams and a detecting function which decodes the M encoded data streams into decoded data;
and
a terminal controller which controls the at least one radio transceiver;
and wherein
in response to a transmission from the station that the terminal is to operate at least one of the radio receivers in at least one frequency band not used to receive the M data streams during at least one identified data frame therein to measure a radio indicator of the at least one frequency band not used to receive the M encoded data streams, the terminal controller causes at least one of the radio receivers to be tuned to the at least one frequency band during the at least one identified data frame and to make measurements of the radio energy therein and to transmit the measurements with the at least one transmitter of the at least one radio transceiver to the station.

5 more elements

In a data transmission system including a station which transmits M encoded data streams using M antennas to a terminal comprising at least one radio transceiver including P radio receivers and at least one transmitter with P being an integer at least equal to 2, each radio receiver including an antenna which receives the M encoded data streams and a detecting function which decodes the M encoded data streams into decoded data, a station controller which controls the station, wherein M is an integer at least equal to 2, and a terminal controller which controls the that at least one radio transceiver, a method comprising:

in response to a transmission from the station that the terminal is to operate at least one of the radio receivers in at least one frequency band not used to receive the M encoded data streams during at least one identified data frame therein to measure a radio indicator of the at least one frequency band not used to receive the M encoded data streams, the terminal controller causes at least one of the radio receivers to be turned to the at least one frequency band during the at least one identified data frame and to make measurements therein and to transmit the measurements with the at least one transmitter of the at least one radio transceiver to the station.

Dependencies are inferred from the claim text.

Inter-frequency measurements with mimo terminals

Life of this patent

Inter-frequency measurements with mimo terminals

Life of this patent

Abstract

Claims60