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Method for notifying reference signal configuration information and device thereof

A technology for configuring information and reference signals, which is applied in the field of notifying reference signal configuration information, can solve the problems of CRS mutual collision and restriction, and achieve the effects of reducing overhead, high multiplexing factor, and long cycle

Active Publication Date: 2014-01-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the existing technology only notifies the UE of the CRS configuration information, through the implicit mapping method of binding the pilot pattern and the cell ID, the number of downlink channels of different cells that the UE can distinguish will be limited by the number of cell IDs, and In a CoMP (Coordinated Multipoint Processing, Coordinated Multipoint Processing) system, the CRSs in a CoMP measurement set (including multiple possible CoMP cooperative cells) are likely to collide with each other

Method used

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  • Method for notifying reference signal configuration information and device thereof
  • Method for notifying reference signal configuration information and device thereof
  • Method for notifying reference signal configuration information and device thereof

Examples

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Embodiment 1

[0035] See figure 1 , This embodiment provides a method for notifying reference signal configuration information, and the specific process of the method is as follows:

[0036] 101: Encode CSI-RS configuration information according to CSI-RS configuration information to obtain CSI-RS configuration information coding, where the CSI-RS configuration information includes at least the number of ports, pilot patterns, pilot periods, and subframe offsets;

[0037] 102: Store the mapping relationship between the CSI-RS configuration information code and the CSI-RS configuration information, and send the mapping relationship between the CSI-RS configuration information code and the CSI-RS configuration information to the user equipment UE for storage;

[0038] 103: Determine the CSI-RS configuration information to be notified, and search for the CSI-RS configuration information code corresponding to the CSI-RS configuration information to be notified in the stored mapping relationship between...

Embodiment 2

[0042] This embodiment provides a method for notifying reference signal configuration information. Since CSI-RS has the characteristics of low overhead, long period, high multiplexing factor, and high-port pilot patterns nested with low-port pilot patterns, this implementation For example, by encoding the CSI-RS configuration information, and notifying the CSI-RS configuration information to the UE in the form of CSI-RS configuration information encoding, so that the UE can determine the CSI-RS configuration information, thereby reducing overhead and ensuring more cells. The purpose of CSI-RS not to collide with each other.

[0043] Among them, the device that notifies the reference signal configuration information is the network device, and the CSI-RS configuration information includes, but is not limited to, the number of ports, the pilot pattern, the pilot period, and the subframe offset.

[0044] If the CSI-RS of a certain cell and the data symbols sent by the strong interferen...

Embodiment 3

[0123] See Figure 7 , This embodiment provides a device for notifying reference signal configuration information, and the device includes:

[0124] The encoding module 701 is used to encode the CSI-RS configuration information according to the channel state information-reference signal CSI-RS configuration information to obtain the CSI-RS configuration information coding. The CSI-RS configuration information includes at least the number of ports, pilot patterns, and pilots. Frequency period and subframe offset;

[0125] The storage module 702 is configured to store the mapping relationship between the CSI-RS configuration information encoding and the CSI-RS configuration information obtained by the encoding module 701;

[0126] The first sending module 703 is configured to send the mapping relationship between the CSI-RS configuration information code and the CSI-RS configuration information stored in the storage module 702 to the user equipment UE for storage;

[0127] The searching...

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Abstract

Embodiments of the present invention disclose a method and a device for notifying reference signal configuration information, and relate to the field of communications technologies. The method includes: coding, according to channel state information-reference signal (CSI-RS) configuration information, the CSI-RS configuration information, to obtain a CSI-RS configuration information code; storing a mapping relation between the CSI-RS configuration information code and the CSI-RS configuration information, and sending the mapping relation to a UE for storage; searching, in the stored mapping relation between the CSI-RS configuration information code and the CSI-RS configuration information, for a CSI-RS configuration information code corresponding to CSI-RS configuration information to be notified; and sending the found CSI-RS configuration information code to the UE, so that the UE determines CSI-RS configuration information according to the received CSI-RS configuration information code and the mapping relation between the CSI-RS configuration information code and the CSI-RS configuration information, where the mapping relation between the CSI-RS configuration information code and the CSI-RS configuration information is stored by the UE. In the embodiments of the present invention, the CSI-RS configuration information is notified to the UE in the form of the CSI-RS configuration information code, so that the UE determines the CSI-RS configuration information according to the CSI-RS configuration information code, thus not only lowering the overhead, but also ensuring that CSI-RSs of multiple cells do not collide with each other.

Description

Technical field [0001] The present invention relates to the field of communications, and in particular to a method and device for notifying reference signal configuration information. Background technique [0002] In a wireless communication system, a network device needs to notify a UE (User Equipment) in a covered area of ​​reference signal configuration information, so that the UE can perform downlink channel estimation based on the reference signal configuration information, thereby improving system error performance. [0003] The prior art discloses a method of notifying the UE of CRS (Common Reference Signal) configuration information. In specific implementation, the network device performs offset by binding the pilot pattern of the downlink CRS to the implicit mapping of the cell identity. In the (shift) operation mode, the pilot pattern is notified to the UE. In addition, the number of CRS ports is implicitly notified to the UE through SIB (System Information Block) signali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04W68/00
CPCH04L5/0094H04W72/04H04L5/0051H04W72/042H04W72/23H04L5/0035H04L5/0048H04L27/2601H04W88/08
Inventor 大卫·马萨莱塞夏媛夏亮
Owner HUAWEI TECH CO LTD
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