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Method for scheduling pilot signal, control node and wireless device

A technology of guiding signals and wireless devices, applied in the field of dispatching guiding signals, which can solve the problems of only 1 unit of transmission power, not high, poor accuracy of wireless channels, etc.

Inactive Publication Date: 2017-07-07
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although figure 1 The mechanism can eliminate ICI, but since the transmission power under this mechanism is only 1 unit, the corresponding signal-to-noise ratio (SNR) is not high in essence
In this case, the accuracy of estimating the wireless channel will be poor

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  • Method for scheduling pilot signal, control node and wireless device
  • Method for scheduling pilot signal, control node and wireless device
  • Method for scheduling pilot signal, control node and wireless device

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Embodiment Construction

[0038] The disclosure proposes a pilot signal scheduling method, a control node and a wireless device, which can effectively eliminate ICI from other cells and simultaneously achieve a higher SNR to increase the data rate.

[0039] Please refer to figure 2 , which is a schematic diagram of a network cluster according to an embodiment of the present disclosure. Generally speaking, the size of the network cluster is determined according to the frequency reuse factor considered by the system. If the frequency reuse factor is 1 / N (N is a positive integer), a network cluster will include N cells. therefore, figure 2 The network cluster 200 shown can be regarded as an aspect in which N is 7. In other words, one specific pilot signal is simultaneously assigned to one wireless device managed by each of the seven control nodes of the network cluster 200 . However, this is for example only, and is not intended to limit the possible implementation modes of the present disclosure. ...

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Abstract

A method for scheduling a pilot signal, a control node and a wireless device are proposed. The control node manages an i-th cell among N cells of a network cluster. The method includes: dividing a training time into at least (N) time slots; scheduling a wireless device of the i-th cell to transmit a first pilot signal at a j-th time slot and a (j+1)-th time slot, or scheduling the wireless device of the i-th cell to transmit a second pilot signal at the j-th time slot and the (j+1)-th time slot; scheduling the wireless device to alternately transmit the first pilot signal and the second pilot signal at residual time slots other than the j-th time slot and the (j+1)-th time slot, wherein the first pilot signal and the second pilot signal have opposite signs.

Description

technical field [0001] The disclosure relates to a method for scheduling pilot signals, a control node and a wireless device. Background technique [0002] In a wireless multi-cell time division duplex (TDD) communication system, channel state information (CSI) is derived based on a pilot signal (pilot signal) from a UE. In order to obtain the CSI, each UE needs to send a pilot signal to the base station to which it belongs. The pilot signal refers to a sequence known by a transmitting end (such as a user end) and a receiving end (such as a base station), and different sequences are orthogonal to each other. After the receiving end receives different pilot signals, the receiving end can divide the pilot signals from different transmitting ends according to the orthogonality of these pilot signals, so as to estimate channels with different transmitting ends respectively. From a linear algebra point of view, the total number of orthogonal pilots in a set is equal to the leng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12
CPCH04W72/54H04W72/535H04J11/0043H04J11/005H04L5/0051H04L5/1469H04L25/0226H04L5/0073H04W72/12H04W72/0446
Inventor 赖明昱吴仁铭
Owner IND TECH RES INST