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Soft spatial-frequency reuse method and apparatus thereof, and base station

An air-frequency, serving base station technology, applied in the field of communication, can solve the problems of reducing the signal-to-interference noise ratio, increasing the interference of adjacent cells, and decreasing the total throughput of the cell, so as to increase the available resources, increase the SINR, and increase the throughput. Effect

Active Publication Date: 2012-06-06
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0011] Since the available resources in the edge area of ​​the cell are transmitted at full power, while increasing the amount of available resources at the edge of the cell, it also increases the interference between adjacent cells. Not only will there be interference between the edge areas of adjacent cells, but also Interference will also occur between different areas of the cell, which reduces the Signal to Interference Plus Noise Ratio (Signal to Interference Plus Noise Ratio, hereinafter referred to as: SINR) of users in the edge area of ​​the cell, thereby reducing the throughput of the edge area of ​​the cell; When the total amount of available resources in the cell is constant, increasing the available resources in the edge area of ​​the cell will reduce the amount of available resources in the center of the cell, thus resulting in a decrease in the total throughput of the cell

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  • Soft spatial-frequency reuse method and apparatus thereof, and base station
  • Soft spatial-frequency reuse method and apparatus thereof, and base station
  • Soft spatial-frequency reuse method and apparatus thereof, and base station

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Embodiment Construction

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0047] Figure 6 It is a flowchart of an embodiment of the SSFR communication method of the present invention. The process of this embodiment can be specifically executed by the base station, such as Figure 6 As shown, the SSFR communication method of this embodiment includes the following processes:

[0048] Step 101, determine the cell area where the user is located according to the strength of the pilot signal fed back by the user, and determine the available...

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Abstract

The invention discloses a soft spatial-frequency reuse (SSFR) method and an apparatus thereof, and a base station. The method comprises the following steps that: according to intensity of a pilot signal feedbacked by a user, an area of a cell that the user is located at is determined as well as frequency resources that are available for the user are determined; according to the frequency resources that are available for the user, corresponded transmitting powers are distributed and resource scheduling is carried out; according to a resource scheduling result, group users are selected, wherein the group users include users that use the same physical resource block (PRB) as the user uses in the same cell and a neighboring cell; a minimum interference leakage matrix is obtained according to the group users as well as under the minimum interference leakage matrix, the interference of downlink data of the user on the set user is minimum, wherein the downlink data are sent by a serving base station of the cell that the user is located at; a precoding matrix of the user is obtained according to the minimum interference leakage matrix; and on the basis of the precoding matrix, precoding is carried out on the downlink data so as to obtain precoded data. According to the embodiment of the invention, on the condition that the total throughput of a cell is not reduced, the throughput of a cell edge area (CEA) is increased.

Description

technical field [0001] The present invention relates to communication technology, in particular to a soft spatial-frequency reuse (hereinafter referred to as: SSFR) communication method and device, and a base station. Background technique [0002] At present, there are two types of downlink interference coordination technologies commonly used in Orthogonal Frequency Division Multiple Access (hereinafter referred to as OFDMA) networks: one is soft frequency reuse (hereinafter referred to as: SFR) technology , and one is a partial frequency reuse (partial frequency reuse, hereinafter referred to as: PFR) technology. [0003] The SFR technology divides all available frequency resources of a cell into available resources in the central area and available resources in the edge area. Among them, the available resources in the central area are transmitted at reduced power, that is, partial power transmission, the available resources in the edge area are transmitted at full power, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L1/00
Inventor 王卫东张英海王朝炜崔高峰余阳许晓东
Owner BEIJING UNIV OF POSTS & TELECOMM
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