Enhanced uplink fractional power control method used for microcells in heterogeneous network

A control method, fractional power technology, applied in power management, advanced technology, electrical components, etc., can solve problems such as changes in wireless channel conditions, invalid transmit power, and dynamic changes in uplink interference not considered.

CN105554862AActive Publication Date: 2016-05-04TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2016-05-04

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Abstract

The invention relates to an enhanced uplink fractional power control method used for microcells in a heterogeneous network. The heterogeneous network comprises a macro cell and a plurality of microcells disposed in the macro cell. User equipment in the macro cell and the microcells respectively provides service to a macro base station and a micro base station. The enhanced uplink fractional power control method comprises the steps that: A, according to an allowable uplink interference magnitude of the base station and the interference condition of the microcells to uplinks of the macro cell, the upper limit value of a power reference value of any user equipment served by a microcell m is set; B, an enhanced power reference value capable of inhibiting the cross-layer interference of the microcells to the uplinks of the macro cell is defined; and C, in a conventional uplink fractional power control method, the enhanced power reference value is adopted, so that the emission power of the user equipment is more effectively controlled. Compared with the prior art, the interference of the microcells to the uplinks of the macro cell is effectively reduced, and the communication quality of the heterogeneous network in an LTE-A system is improved.
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Description

technical field

[0001] The present invention relates to a microcell uplink power control method, in particular to an enhanced uplink fractional power control method for microcells in a heterogeneous network. Background technique

[0002] In order to increase the capacity and / or coverage of a traditional cellular mobile communication network that only deploys macrocells (Marcocell), in an LTE-Advanced (referred to as LTE-A) system, it is considered that co-channel ( That is, co-channel) to deploy some low-power micro cells (ie, small cells), such as Pico cells; the resulting network is usually called a heterogeneous network (ie, heterogeneous networks, HetNets for short).

[0003] When multiple micro cells that can be opened to all network users are deployed in the macro cell, some user equipments can be served by the micro cell, thereby reducing the burden of the macro cell and realizing load balancing.

[0004] In the LTE-A system, regardless of whether it is a macro cell ...

Examples

Embodiment Construction

[0056] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0057] figure 2 A flow chart of the method according to the invention is shown. It can be seen from the figure: According to the enhanced uplink fractional power control method for micro cells in the heterogeneous network of LTE-A system according to the present invention, wherein the heterogeneous network includes macro cells and deployed in the A plurality of micro cells in a macro cell, the user equipment in the macro cell and the micro cell are respectively served by a macro base station and a micro base station, and the method includes the following steps:

[0058] First, in s...