Transmitting and receiving methods
AssigneeNokia Corporation
InventorsOlav Trikkonen, Mikko Kokkonen, Kari Kallojarvi, Rinat Kashaev
Life of this patent
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Abstract
This invention describes a wireless system comprising a plurality of transmitters and receivers, wherein each transmitter has between 1 and n antennas and each receiver has between 1 and m antennas wherein one of said transmitter is arranged to transmit to one of the receivers, said one transmitter is controlled in dependence on at least one of at least one parameter of said transmitters, at least one parameter of said receiver, and at least one parameter of a wireless environment between said transmitter and said receiver.
Claims78
A wireless system comprising a plurality of transmitters and receivers, wherein each transmitter has between 1 and n antennas and each receiver has between 1 and m antennas wherein one of said transmitter is arranged to transmit to one of the receivers, said one transmitter is controlled in dependence on at least one of:
- at least one parameter of said transmitter;
- at least one parameter of said receiver;
- and
- at least one parameter of a wireless environment between said transmitter and said receiver.
A wireless system comprising a plurality of transmitters and receivers, wherein each transmitter has between 1 and n antennas and each receiver has between 1 and m antennas, wherein one of said transmitters is arranged to transmit to one of the receivers, said one transmitter is controlled in dependence on the number of antennas of the transmitter and the number of antennas of the receiver.
A wireless system comprising a plurality of transmitters and receivers, wherein each transmitter has between 1 and n antennas and each receiver has between 1 and m antennas, wherein one of said transmitters is arranged to transmit to one of the receivers, wherein the transmission is controlled in dependence on the number of antennas of said transmitter and receiver, based on a scalable space time codes.
A wireless system comprising a plurality of transmitters and receivers, wherein each transmitter has between 1 and n antennas and each receiver has between 1 and m antennas wherein one of said transmitter is arranged to transmit to one of the receivers, wherein the transmission is controlled in dependence on an estimated practical rank number.
A method of communication in a system comprising a plurality of transmitters and receivers, wherein each transmitter has between 1 and n antennas and each receiver has between 1 and m antennas, comprising the steps of:
- determining at least one parameter of one transmitter;
- and/or at least one parameter of a receiver to which the transmitter is to transmit;
- and/or at least one parameter of a wireless environment between said transmitter and said receiver;
- and
- controlling said one transmitter to transmit to said receiver in dependence on the at least one determined parameter.
A method of communication in a wireless system comprising a plurality of transmitters and receivers, wherein each transmitter has between 1 and n antennas and each receiver has between 1 and m antennas, comprising the steps of:
- determining the number of antennas of one transmitter and the number of antennas of a receiver to which the one transmitter is to transmit;
- and
- transmitting from said one transmitter to the receiver in accordance with said determination.
A method of communication in a wireless system comprising a plurality of transmitters and receivers, wherein each transmitter has between 1 and n antennas and each receiver has between 1 and m antennas, said method comprising the step of:
- determining a practical rank number for a transmitter and a receiver to which the transmitter is to transmit;
- transmitting from the transmitter to the receiver in accordance with the determined practical rank number.
A method of communication in a wireless system comprising a plurality of transmitters and receivers, wherein each transmitter has between 1 and n antennas and each receiver has between 1 and m antennas, comprising the steps of:
- providing scalable space time codes,
- determining a number of antennas of a transmitter and/or of a receiver to which the transmitter is to transmit;
- determining space time codes for said transmission in accordance with said antenna determining step;
- and
- transmitting to said receiver in accordance with the determined space time codes.
A transmitter for use in a wireless system, said transmitter comprising:
- a plurality of transmitter elements;
- means for receiving capability information of a receiver to which said transmitter is to transmit;
- and means for controlling said transmitter elements in accordance with said receiver capability information.
An entity for use in a wireless communications systems, said entity having means for determining a practical rank number based on information relating to said entity and information relating to an entity with which said entity is arranged to communicate.
A wireless system comprising;
- a transmitter being arranged to transmit a plurality of beams and a receiver being arranged to receive said plurality of beams;
- wherein
- said transmitter is arranged to multiply a stream of symbols to be transmitted by n transforms to generate a resultant transformation used in the generation of said beams;
- wherein
- the n transforms used are selected in dependence on at least one of;
- a wireless radio environment between said transmitter and said receiver,
- at least one receiver characteristic, and
- at least one transmitter characteristic.
71 A wireless system as claimed in claim 37, wherein said at least one parameter of at least one of said receivers comprises at least one of;
- number of antennas;
- service required by said receiver;
- one or more parameters of said service required by said receiver;
- computational capacity of said receiver;
- quality of service required by said receiver;
- data rate required by said receiver.
A method of communication in a system comprising a transmitter being arranged to transmit a plurality of beams and a receiver being arranged to receive said plurality of beams, said method comprising the steps of;
- receiving a stream of symbols to be transmitted;
- selecting n transforms in dependence on at least one of a wireless radio environment between said transmitter and said receiver,
- at least one receiver characteristic, and
- at least one transmitter characteristic;
- and multiplying said stream of symbols to be transmitted by said n transforms to generate a resultant transformation used in the generation of said beams.
A transmitter for use in a wireless system,
- said transmitter being arranged to multiply a stream of symbols to be transmitted by n transforms to generate a resultant transformation used in the generation of said beams;
- wherein
- the n transforms used are selected in dependence on at least one of a wireless radio environment between said transmitter and said receiver,
- at least one receiver characteristic, and
- at least one transmitter characteristic.
Dependencies are inferred from the claim text.