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Information sending and determining and relationship determining method and device

A technology of information transmission and relationship, applied in the field of communication, can solve the problems of indistinguishability and poor channel estimation performance of terminals, and achieve the effect of improving channel estimation performance

Active Publication Date: 2017-04-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0036] The present invention provides a method and device for information transmission and determination, and relationship determination, to at least solve the problem of inability to distinguish different precoded pilots in the notification signaling of quasi-co-location information in the related art, which leads to poor channel estimation performance of the terminal. good question

Method used

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  • Information sending and determining and relationship determining method and device
  • Information sending and determining and relationship determining method and device
  • Information sending and determining and relationship determining method and device

Examples

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Effect test

Embodiment 1

[0121] In related technologies, the notification of quasi-co-location information cannot distinguish between different ports, different subframes, and different subbands. Therefore, the same quasi-co-location NZP CSI-RS configuration must be used when using different beams for transmission. measurement, but in fact different beams have different channel characteristics (logical channel, the terminal can only see the logical channel), so this method will affect the channel estimation performance and receiver performance. Moreover, when multiple beams appear in a cell, similar to the formation of figure 1 At this time, the existing 2-bit indication signaling no longer meets the requirements, and in some cases it may be necessary to support the selection of up to 16 or more beams. But the overhead caused by simple extension signaling is not a good solution.

[0122] In order to solve the problem of inaccurate large-scale characteristics of the channel obtained by the terminal du...

Embodiment 2

[0146] Figure 9 Schematic illustration of CSI-RS pilots for multiple beams Figure 1 ,Such as Figure 9 As shown, by sending different beams at different subframe positions and triggering different channel quantization information feedback at different positions, multiple precoded pilots are supported in a more flexible manner.

[0147] The related technology notice is a set of periodic NZP CSI-RS configuration, which is equivalent to Figure 9 All subframes in are considered to have a quasi-co-located relationship with the DMRS of the current data transmission subframe, which obviously causes problems. One solution is, on the basis of the original quasi-co-location NZP CSI-RS configuration, add time-domain position indication information in each Set, such as subframe offset information, subframe set information, etc., and pass DCI The Set in the selection signaling is used for selection.

[0148] Table 11 is a mapping table for time-domain position indication through sub...

Embodiment 3

[0160] When the configured system bandwidth is large, the precoded pilots used in different frequency domain positions may change, Figure 12 is a schematic diagram of different sub-band positions with different beams. In related technologies, what is notified is a set of periodic NZP CSI-RS configurations, which is equivalent to Figure 12 The CSI-RS sent by all RBs / subbands in the data is considered to have a quasi-co-location relationship with the DMRS of the current data transmission subframe. This understanding is not accurate. One solution is to use the quasi-co-location Based on the NZP CSI-RS configuration, frequency domain position indication information is added to each Set, and is selected through the Set selection signaling in the DCI.

[0161]Table 14 indicates the position in the frequency domain by notifying the position of the sub-band, and different sub-band positions correspond to different weights. Although the CSI-RS configuration IDs of subbands 1, 2, 3,...

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Abstract

The invention provides an information sending and determining and relationship determining method and device. The information sending method comprises the steps that a base station sends M parameter sets through high-level signaling, wherein M>=1, each parameter set at least comprises quasi-colocated nonzero power CSI-RS pilot instruction information, and the quasi-colocated nonzero power CSI-RS pilot instruction information is used for the terminal to acquire the large scale features of the channel; and when M>1, the base station also indicates parameter set selection information of the current subframe for transmitting physical layer control signaling through the physical layer control signaling. With application of the information sending and determining and relationship determining method and device, the terminal is enabled to perform matching according to the acquired large scale features of the channel to acquire the quasi-colocated information of the current data so that the problem in the relevant technologies that the large scale features of the channel acquired by the terminal are inaccurate due to the fact that the indication in the notification signaling in the quasi-colocated information is undefined can be solved and the effect of enhancing the channel estimation performance of the terminal can be achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method and device for information transmission and determination, and relationship determination. Background technique [0002] During channel demodulation, if the terminal can obtain some statistical characteristic parameters of the channel between the base station and the terminal in advance, the terminal can effectively use these statistical characteristic parameters to improve the estimation accuracy of the demodulation pilot, improve the performance of the receiver, and effectively Noise is suppressed, and statistical characteristic parameters can be applied to different estimation algorithms and receiving algorithms. It should be pointed out that only the pilot signals sent by the same base station can accurately measure the above statistical channel characteristics, that is, the measurement of these statistical characteristic parameters is generally for the pilot signa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/12
CPCH04W72/23H04W72/04H04L5/0007H04L5/005H04L5/0053H04L5/0094H04B7/0626H04L5/0057H04W72/0446
Inventor 陈艺戬李儒岳蔡剑兴肖华华李永王瑜新鲁照华吴昊
Owner ZTE CORP
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