Wide band wireless multimedia communication system
AssigneeLG Information & Communications, Ltd.
InventorsOk Moon Kwak, Kwang Joo Choi
Life of this patent
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Abstract
Disclosed is a local multipoint distribution service(LMDS) system, in which the cost for installation and maintenance is lower comparing to a cable communication system, it takes a little time to install the system, and a variety multimedia communication services can be provided. According to one feature of the present invention, the LMDS system comprises a data/signal handler for multiplexing and modulating packet data received from a network, and for demodulating and demultiplexing an optical signal received; and at least one base stations for down-converting the multiplexed and modulated packet data into a radio frequency(RF) signal, and for converting an RF signal received into an optical signal so as to send to the data/signal handler.
Claims12
An apparatus comprising:
- a first base station of a first cell comprising a plurality of antennas, wherein:
- each antenna transmits on one of two frequencies;
- each antenna is oriented in one of two opposite polarities;
- each antenna is directed to a sub-cell of the first cell;
- each sub-cell of the first cell is adjacent to at least two sub-cells of a base station that is not the first base station;
- each of said at least two sub-cells has an antenna that transmits one of the two frequencies that is not the same as the one of the two frequencies that the adjacent sub-cell of the first cell transmits;
- and
- each of said at least two sub-cells has an antenna that is oriented in one of the two opposite polarities that is the same as the one of the two frequencies that the adjacent sub-cell of the first cell is oriented.
A method comprising:
- configuring a first base station of a first cell to comprise a plurality of antennas, such that:
- each antenna transmits on one of two frequencies;
- each antenna is oriented in one of two opposite polarities;
- each antenna is directed to a sub-cell of the first cell;
- each sub-cell of the first cell is adjacent to at least two sub-cells of a base station that is not the first base station;
- each of said at least two sub-cells has an antenna that transmits one of the two frequencies that is not the same as the one of the two frequencies that the adjacent sub-cell of the first cell transmits;
- and
- each of said at least two sub-cells has an antenna that is oriented in one of the two opposite polarities that is the same as the one of the two frequencies that the adjacent sub-cell of the first cell is oriented.
Dependencies are inferred from the claim text.