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Uplink signal detecting method and downlink signal transmitting method for subdistrict with multiple coverage areas

A technology for signal detection and coverage area, applied in space transmit diversity, diversity/multi-antenna systems, advanced technologies, etc.

Active Publication Date: 2013-10-23
TD TECH COMM TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no method for NodeB to detect uplink signals and send downlink signals in a multi-coverage area scenario.

Method used

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  • Uplink signal detecting method and downlink signal transmitting method for subdistrict with multiple coverage areas
  • Uplink signal detecting method and downlink signal transmitting method for subdistrict with multiple coverage areas
  • Uplink signal detecting method and downlink signal transmitting method for subdistrict with multiple coverage areas

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Embodiment Construction

[0053] In order to make the purpose, technical means and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0054] The basic idea of ​​the present invention is: in a cell with multiple coverage areas, all antennas in the cell receive uplink signals, when performing uplink signal detection, select some antennas from all antennas in all coverage areas, and use these selected antennas to Uplink signal detection is performed on received signals on the network; when downlink signal transmission is performed, the coverage area for downlink signal transmission is determined according to these selected partial antennas, and downlink signal transmission is performed.

[0055] Specifically, the uplink signal detection method in the present invention includes: in any uplink time slot, all antennas in the cell will receive the uplink signal of any uplink channel in the time slot, and ...

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Abstract

The invention discloses an uplink signal detecting method which comprises the steps of: normalizing noise power of receiving signals on each antenna in a subdistrict; determining effective antennae according to a set effective antenna threshold; and carrying out detection by using the normalized receiving signals on the effective antennae. In this way, the antennae receiving stronger uplink channel signals can be selected and used for signal detection. The invention also discloses a downlink signal transmitting method which comprises the steps of: determining the effective antennae of the uplink channel signals which correspond to downlink channels; determining and receiving the coverage areas of the uplink channel signals; computing the addition of receiving power and DLBF gain of each coverage area for the uplink channel signals; and selecting the coverage area with a maximum addition result for transmitting downlink channel signals. In this way, the coverage areas and downlink channels with better current condition can be determined, thereby the coverage areas and the downlink channels can be used to transmit the downlink signals.

Description

technical field [0001] The invention relates to signal detection and transmission technology, in particular to a method for uplink signal detection and downlink signal transmission in a cell with multiple coverage areas. Background technique [0002] In a TD-SCDMA network, there is a scenario where one cell includes multiple coverage areas. In a multi-coverage area scenario, the types and numbers of antennas in each coverage area may be different, and the transmit power of different antennas in each coverage area may be different. For example: in figure 1 In the shown indoor and outdoor three-dimensional coverage scenario, a cell consists of two types of remote radio remote units (RRUs): single-channel RRUs and multi-channel RRUs. The single-channel RRU is an RRU with a single antenna, corresponding to one antenna, and the multi-channel RRU is an RRU with multiple antennas, corresponding to multiple antennas. Typical multi-channel RRUs include 6-channel RRUs and 8-channel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/08H04B7/06H04L25/02H04W72/54
CPCY02B60/50Y02D30/70
Inventor 魏立梅佟学俭邢立军蔡文涛
Owner TD TECH COMM TECH LTD
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