Method and apparatus for joint processing and precoding mode selection based on limited feedback in mobile communication system
First Claim
1. A method for selecting a precoding mode in a mobile communication system by a base station, the method comprising:
- receiving channel estimate information from at least one terminal;
generating a user group according to a precoding scheme from among a plurality of precoding schemes based on the channel estimate information;
performing individual user scheduling of the generated user group according to each precoding scheme to generate a service candidate group set;
determining a precoding scheme that maximizes a transmission capacity of the service candidate group set for each precoding scheme, wherein the determination is based on an expected signal to interference plus noise ratio (SINR) degradation such that the SINR degradation comprises an interference to a multiple link between a transmission end and a reception end according to the determined precoding scheme; and
transmitting data to a determined candidate group set based on the determined precoding scheme.
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Abstract
According to one embodiment, a method of a base station configured to select a precoding mode in a mobile communication system. When channel estimate information is received from at least one terminal, the channel estimate information is collected, so that user grouping is performed according to one precoding scheme from among multiple precoding schemes. Individual user scheduling is performed according to each precoding scheme, so that a service candidate group set is generated. The selected precoding scheme is maximized according to a transmission capacity of a service candidate group set for each precoding scheme. Data is then transmitted to a determined candidate group set using the determined precoding scheme.
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Citations
20 Claims
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1. A method for selecting a precoding mode in a mobile communication system by a base station, the method comprising:
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receiving channel estimate information from at least one terminal; generating a user group according to a precoding scheme from among a plurality of precoding schemes based on the channel estimate information; performing individual user scheduling of the generated user group according to each precoding scheme to generate a service candidate group set; determining a precoding scheme that maximizes a transmission capacity of the service candidate group set for each precoding scheme, wherein the determination is based on an expected signal to interference plus noise ratio (SINR) degradation such that the SINR degradation comprises an interference to a multiple link between a transmission end and a reception end according to the determined precoding scheme; and transmitting data to a determined candidate group set based on the determined precoding scheme. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A base station configured to select a precoding mode in a mobile communication system, the base station comprising:
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a transceiver configured to receive channel estimate information from at least one terminal; a user grouping unit configured to generate a user group according to a precoding scheme from among a plurality of precoding schemes associated with each terminal of the at least one terminal based on the channel estimate information; and a scheduler configured to perform individual user scheduling of the generated user group according to each precoding scheme to generate a service candidate group set, and determine a precoding scheme that maximizes a transmission capacity of a service candidate group set for each precoding scheme, wherein the determination is based on an expected signal to interference plus noise ratio (SINR) degradation such that the SINR degradation comprises an interference to a multiple link between a transmission end and a reception end according to the determined precoding scheme, wherein the transceiver is configured to transmit data to a determined candidate group set based on the determined precoding scheme. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification