A method for establishing a small cell telecommunications network is provided. The method includes determining a plurality of sets of candidate locations, in which each set includes candidate locations for establishing small cell base transceiver stations to provide wireless network service. Each location in the set is determined by applying a gradient descent process to find a local optimal location. The evaluation criteria in the process can include, e.g., an estimated number of people expected to receive coverage, and/or the cost of operating the base transceiver stations. The plurality of sets are evaluated to determine a set of global optimal locations. The evaluation criteria can include, e.g., the expected revenue generated per unit time minus the cost of operating the base transceiver stations per unit time.

A device may select a sector of a network on which to perform network traffic offloading based on a sector loading metric relating to an imbalance of loading of a set of cells of the sector. The device may identify a loaded cell of the sector based on one or more call admission metrics or one or more cell congestion metrics. The device may identify a less loaded neighbor (LLN) cell for the loaded cell. The device may cause one or more cell configuration alterations relating to causing network traffic to be offloaded from the loaded cell to the LLN cell.

A device may select a sector of a network on which to perform network traffic offloading based on a sector loading metric relating to an imbalance of loading of a set of cells of the sector. The device may identify a loaded cell of the sector based on one or more call admission metrics or one or more cell congestion metrics. The device may identify a less loaded neighbor (LLN) cell for the loaded cell. The device may cause one or more cell configuration alterations relating to causing network traffic to be offloaded from the loaded cell to the LLN cell.

A method and an apparatus for acquiring channel information in a polarization division duplex system. An uplink signal transmitted from a terminal is received, the uplink signal indicating that a null subcarrier is disposed in a first subcarrier overlapped with a second subcarrier including a downlink pilot signal, and a self-interference channel is estimated by using a signal received from the null subcarrier. A signal corresponding to the null subcarrier from the uplink signal is removed, and channel information is acquired by estimating the uplink channel based on estimation results of the self-interference channel and a pilot signal included in the uplink signal from which the null subcarrier is removed.

A method and an apparatus for acquiring channel information in a polarization division duplex system. An uplink signal transmitted from a terminal is received, the uplink signal indicating that a null subcarrier is disposed in a first subcarrier overlapped with a second subcarrier including a downlink pilot signal, and a self-interference channel is estimated by using a signal received from the null subcarrier. A signal corresponding to the null subcarrier from the uplink signal is removed, and channel information is acquired by estimating the uplink channel based on estimation results of the self-interference channel and a pilot signal included in the uplink signal from which the null subcarrier is removed.

[Object] To enable flexible arrangement of cells with a smaller burden. [Solution] Provided is an apparatus including: an acquisition unit configured to acquire information indicating one or more second base stations located within coverage of a first base station connected to a wired backhaul; and a controller configured to control establishment of a wireless backhaul between the first base station and each of the one or more second base stations.

The present invention relates to a method and a device for performing cell shaping. A base station can establish a cell shaping plan on the basis of current states. The current states may be the load of the base station and the traffic space distribution of the base station. The base station transmits a first message to a neighboring base station and receives a second message from the neighboring base station in response to the first message. The first message may include the cell shaping plan, and the second message may include whether or not the neighboring base station can perform cell shaping. The base station can determine whether or not to perform cell shaping on the basis of the second message.

The present invention relates to a method and a device for performing cell shaping. A base station can establish a cell shaping plan on the basis of current states. The current states may be the load of the base station and the traffic space distribution of the base station. The base station transmits a first message to a neighboring base station and receives a second message from the neighboring base station in response to the first message. The first message may include the cell shaping plan, and the second message may include whether or not the neighboring base station can perform cell shaping. The base station can determine whether or not to perform cell shaping on the basis of the second message.

Systems, methods, and apparatus for facilitating automated wireless access point resource allocation and optimization are presented herein. An external data store (EDS) component can automatically select, based on spatial data of at least one polygon including at least one wireless access point, one or more parameters associated with wireless communications of the at least one wireless access point. Further, an access point provisioning gateway (APPG) can remotely initiate the at least one wireless access point to automatically configure equipment of the at least one wireless access point to service the wireless communications using at least one of the one or more parameters. Furthermore, a boundary generation component can automatically generate the spatial data by at least one of: combining spatial data of two or more polygons; splitting a polygon into at least two polygons; or expanding a boundary of the polygon.

In a cellular communication system, a coverage area configuration transition is performed where a compensation service area is expanded to cover at least a portion of an energy saving service area of an energy saving cell employing the same frequency channel as the compensation service area. An energy saving communication station providing the energy saving cell is configured to deactivate the energy saving service area. Handovers to the compensation service area are prepared for the UE devices in the energy saving service area. The energy saving communication station sends a expansion notification to a compensation communication station where the notification at teas!indicates that the compensation service area can be expanded. The energy saving communication station transmits handover commands to the UE devices prior to expansion of the compensation service area and reduction of the energy saving service area.