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A downlink sending method and device

A sending method and technology of a sending device are applied in the field of communication and can solve the problem of no RRU combining and the like

Active Publication Date: 2016-11-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Theoretically speaking, RRUs that are suitable for use in different scenarios may be combined in different ways, but there is currently no solution for combining RRUs with different numbers of antennas

Method used

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  • A downlink sending method and device
  • A downlink sending method and device
  • A downlink sending method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] see figure 1 , is a downlink sending method provided by an embodiment of the present invention, including:

[0072] 101: Determine an RRU corresponding to the UE, where the working RRU corresponding to the UE is an RRU available for communication with the UE, and the working RRU corresponding to the UE includes a target RRU corresponding to the UE.

[0073] Exemplarily, the downlink transmission method provided by the embodiment of the present invention can be applied to various communication systems, such as a long term evolution (Long Term Evolution, LTE) system, especially when multiple RRUs share a cell in the above-mentioned system, select the user equipment (User Equipment, UE) in the scenario of RRU sending downlink data. The execution subject of the embodiment of the present invention may be a base station, specifically, may be a BBU (Baseband Unit, baseband processing unit) of the base station.

[0074] The working RRU corresponding to the UE: refers to the R...

Embodiment 2

[0108] see figure 2, is another downlink sending method provided by the embodiment of the present invention, including:

[0109] 201: Determine a working RRU corresponding to the UE, where the working RRU corresponding to the UE is an RRU that can be used for communication with the UE, and the working RRU corresponding to the UE includes a target RRU corresponding to the UE.

[0110] Optionally, in different combining modes, the determined working RRU corresponding to the UE is different, specifically:

[0111] (1) In the 2+1n combination mode, the working RRU corresponding to the UE can be: 2-antenna RRU and 1-antenna RRU, or only include 1-antenna RRU.

[0112] (2) In the 8+1n combination mode, the working RRU corresponding to the UE can be: 8-antenna RRU and 1-antenna RRU, or only include 1-antenna RRU.

[0113] (3) In the 8+2n combination mode, the working RRU corresponding to the UE can be: 8-antenna RRU and 2-antenna RRU, or only include 2-antenna RRU.

[0114] (4) I...

Embodiment 3

[0150] Since the RRU with a large number of antennas supports the transmission mode supported by the RRU with a small number of antennas, it can be determined whether the working RRU corresponding to the UE supports the downlink transmission mode of the UE through the number of antennas of the working RRU corresponding to the UE. In this way, it is determined whether the working RRU corresponding to the UE supports the downlink transmission mode of the UE, and the RRU combination mode configured by the base station includes two types of RRUs as an example for illustration, specifically 2+1n combination mode and 8+1n combination method mode and 8+2n combination mode are taken as examples for description.

[0151] see image 3 , is another downlink sending method provided by the embodiment of the present invention, including:

[0152] 301: Determine a working RRU corresponding to the UE, where the working RRU corresponding to the UE is an RRU that can be used for communication ...

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Abstract

The embodiment of the present invention discloses a downlink transmission method and device, relates to the field of communication, and can support combination of RRUs with different numbers of antennas. The method provided by the embodiment of the present invention includes: determining the working RRU corresponding to the UE, wherein the working RRU corresponding to the UE is an RRU that can be used for communication with the UE, and the working RRU corresponding to the UE includes a target RRU corresponding to the UE; if The working RRU corresponding to the UE includes at least 2 RRUs with different numbers of antennas, then select at least 1 RRU from the working RRU corresponding to the UE, and the selected at least 1 RRU supports the downlink transmission mode of the UE; RRUs send downlink data to the UE. The embodiment of the present invention is used to select the RRU for sending data to the UE.

Description

technical field [0001] The present invention relates to the communication field, in particular to a downlink sending method and device. Background technique [0002] In a specific scenario, multiple Radio Remote Unit (RRU) coverage areas can be combined (hereinafter referred to as "multi-RRU common cell") to improve coverage, thereby improving signal quality and network performance. To better meet user needs and improve user experience. Among them, the specific scenarios may include: F-band indoor and outdoor coordination scenarios, outdoor blindness compensation scenarios, indoor cell merging scenarios, high-speed rail and residential cell deep coverage scenarios, outdoor cell merging scenarios, etc. [0003] There are many types of RRUs. For example, the types can be distinguished according to the number of antennas, that is, different RRUs can have different numbers of antennas, generally including: 8-antenna RRU, 4-antenna RRU, 2-antenna RRU, 1-antenna RRU, etc. RRUs w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/00H04W88/08
Inventor 董伟
Owner HUAWEI TECH CO LTD
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