Large scale channel parameter indication method, large scale channel parameter determination method, base station and terminal

A technology for channel parameters and determination methods, applied to base stations and terminals, indication of large-scale channel parameters, and determination methods, can solve the problem that a receiver cannot determine large-scale channel parameters for downlink reception, etc.

Active Publication Date: 2018-08-14
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an indication and determination method of large-scale channel parameters, a base station and a terminal to solve the problem that the receiving end cannot determine the large-scale channel parameters related to downlink reception in the prior art

Method used

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  • Large scale channel parameter indication method, large scale channel parameter determination method, base station and terminal
  • Large scale channel parameter indication method, large scale channel parameter determination method, base station and terminal
  • Large scale channel parameter indication method, large scale channel parameter determination method, base station and terminal

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no. 1 example

[0113] like figure 1 As shown, the embodiment of the present invention provides a method for indicating large-scale channel parameters, which is applied to a base station, including:

[0114] Step 101: Determine the first transmission resource related to the transmission channel for one or a group of large-scale channel parameters, and send the configuration information of the first transmission resource to the terminal through the first signaling, and the first transmission resource are transmission resources of K downlink reference signals, and K is a positive integer.

[0115] Here, a large-scale channel parameter is a spatial parameter, delay spread, average delay, Doppler Doppler frequency offset, Doppler spread or average gain, etc., and a set of large-scale channel parameters includes: spatial parameter, delay spread, At least two of average delay, Doppler frequency offset, Doppler spread, or average gain. The first signaling may specifically be an activation signalin...

no. 2 example

[0126] like figure 2 As shown, the method for indicating large-scale channel parameters in the embodiment of the present invention is applied to the base station, including:

[0127] Step 201: Configure a third transmission resource for the terminal, and send configuration information of the third transmission resource to the terminal through third signaling, where the third transmission resource is a transmission resource of N downlink reference signals , and N is greater than or equal to K.

[0128] Specifically, the base station configures transmission resources of N downlink reference signals for the terminal through signaling, and the downlink reference signals may specifically be channel state information reference signals CSI-RS. The configuration information of transmission resources of each downlink reference signal includes time-frequency resources transmitted by a set of downlink reference signal ports, sequence configuration information of downlink reference sign...

example 1

[0157] Assuming that the base station determines that the transmission beams used to transmit data or control channels to the terminal are beam A and beam B, the base station should select the CSI that is also transmitted using beam A and beam B from the K CSI-RS resources used for spatial parameter tracking -RS resources (denoted as CSI-RS resource A and CSI-RS resource B), and the numbers of CSI-RS resource A and CSI-RS resource B in the K CSI-RS resources used for spatial parameter tracking, Notify the terminal through DCI.

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Abstract

The invention provides a large scale channel parameter indication method, a large scale channel parameter determination method, a base station and a terminal. The problem that in the prior art, a receiving end cannot determine large scale channel parameters related to downlink receiving is solved. The indication method provided by the invention comprises the steps of determining first transmissionresources related to transmission channels for one or a group of large scale channel parameters, and sending configuration information of the first transmission resources to the terminal through first signals, wherein the first transmission resources are the transmission resources of K downlink reference signals, and the K is a positive integer; and selecting second transmission resources in thefirst transmission resources according to transmission parameters employed by the transmission channels, sending indication information of the second transmission resources to the terminal through second signals, wherein the second resources are the transmission resources of L downlink reference signals, the L is a positive integer, and the K is greater than or equal to the L. According to the methods, the base station and the terminal, the terminal can determine corresponding receiving beams according to the large scale parameters of the transmission channels, and the receiving reliability ofthe terminal is improved.

Description

technical field [0001] The present invention relates to the technical field of communication applications, in particular to a method for indicating and determining large-scale channel parameters, a base station and a terminal. Background technique [0002] In view of the important role of MIMO (Multiple-Input Multiple-Output) technology in improving peak rate and system spectrum utilization, LTE (Long Term Evolution, long-term evolution) / LTE-A (LTE-Advanced, enhanced long-term Evolution) and other wireless access technology standards are built on the basis of MIMO+OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) technology. The performance gain of MIMO technology comes from the spatial freedom obtained by multi-antenna systems. Therefore, one of the most important evolution directions of MIMO technology in the standardization development process is the expansion of dimensions. [0003] In LTE Rel-8, up to 4 layers of MIMO transmi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00
CPCH04L5/0053H04B7/06H04W24/10H04L5/0048H04B7/024H04L5/0094H04B7/0413H04B7/0417H04B17/309H04B7/0695H04L25/0204H04L25/0224H04L27/2666H04W16/28H04W72/23
Inventor 高秋彬塔玛拉卡·拉盖施陈润华苏昕
Owner DATANG MOBILE COMM EQUIP CO LTD
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