Abstract: In one embodiment, an apparatus, a system or a network (1) sets a discovery period for a node (2B). The discovery period is a time period in which the node (2B) sends a signal (e.g., PSS, SSS, and CRS) necessary for cell detection and radio measurement performed by a user equipment (3A) before a cell (20B), controlled by the node (2B), is to be turned on in order to send a signal (e.g., data signal) for either or both of user data reception and transmission. It is achieved, for example, that the user equipment (3A) is able to detect the signal (e.g., PSS, SSS, and CRS) for cell detection and radio measurement in the discovery period by using legacy behavior of radio measurement.

Abstract: A radio communication apparatus provided with a plurality of antennas (101-1 to 101-M) includes: a channel information acquisition unit (105) that acquires information related to channels between the radio communication apparatus and another radio communication apparatus; an index calculation unit (106) that uses that information to calculate indices related to an angular spread of the channels; a weighting factor generation unit (107) that uses that information and the indices to generate weighting factors corresponding to the respective antennas; and a weighting factor multiplication unit (110) that multiplies signals to be processed by each antenna by the weighting factor corresponding to the antenna that processes the signal.

Abstract: A method and a device for estimating a communication load, as well as a radio station and an upper-level apparatus in a radio communication system, are provided that can estimate a communication load in a target network with high accuracy by using received quality information. A communication load estimation function (1) for estimating a communication load in a network (NW) estimates the communication load in the network by using at least a first quality indicator (Q1), which is a quality measurement value including entire received power, and a second quality indicator (Q2), which is a quality measurement value including the signal-to-noise-and-interference ratio of a reference signal.

Abstract: A method for estimating a network communication load without performing actual communication and a wireless communication terminal are provided. A wireless communication terminal (10) connectable to a network (NW) includes a load estimation section (14), and the load estimation section (14) estimates a communication load of the network NW by using a first quality index that does not depend on a network communication load and a second communication index that depends on a network communication load.