| CPC H04B 7/0408 (2013.01) [H04B 7/0413 (2013.01)] | 16 Claims |
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1. A method of adaptively selecting beams in a network node implemented in a wireless communication system, comprising:
determining, by the network node, a set of beams to transmit reference signals in a burst action set A={A #1, . . . , A #N} with N elements, where parameter N corresponds to a total number of the reference signals, wherein the determining is based on one of: random search, exhaustive search, iterative search and hierarchical search;
transmitting, from the network node, a set of reference signals using the set of beams contained in A to an associated node;
in response to the transmitting, receiving, from the associated node, measurements of a signal level of a radio link established between the network node and the associated node;
calculating, by the network node, based on the measurements of the received signal level and a correlation between beams of the set of beams, an associated reward (R) cost function, which comprises a set of associated weights W={W1, . . . , WX}, where parameter X corresponds to a number of network parameters considered in the associated reward (R) cost function;
updating, by the network node, a mapping of the burst action set A with the associated reward (R) cost function; and
retransmitting, by the network node, the set of reference signals using an updated burst action set A′, the updated burst action set A′ being obtained based on the updated mapping, and wherein the set of beams in the updated burst action set A′ is decorrelated beams.
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