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Method and device for determining pilot frequency port

A technology for determining a method and a port, which is applied in the communication field and can solve the problems of non-orthogonality, non-orthogonality of reference signals, and influence on channel estimation of reference signals.

Active Publication Date: 2014-09-10
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Depend on image 3 It can be seen that under the corresponding relationship between E-PDCCH and UERS port, the specific resource of a PRB pair only corresponds to a unique UERS port, so if two different E-PDCCHs use the same time-frequency resource, they must use For the same UERS port, there is no specific resource corresponding to multiple UERS ports. In order to distinguish the signals from the sender to different UEs, different scrambling sequences can be used to distinguish the same UERS, and different scrambling sequences are used The same UERS ports are non-orthogonal and interfere with each other, so MU-MIMO transmission based on different UERS ports cannot be supported
Only different URRS scrambling sequences can be used to distinguish the channels from the transmission point to multiple users. Since the reference signals of different users based on different scrambling sequences are not orthogonal, it will affect the channel estimation of the reference signals, and then affect the multiple User Transmission Performance
[0014] To sum up, the existing pilot port determination schemes in the prior art can only support multi-user transmission based on different user-specific reference signal scrambling sequences, and the reference signals of different users are not orthogonal, which affects the reference signal The channel estimation is carried out, which in turn affects the performance of multi-user transmission

Method used

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  • Method and device for determining pilot frequency port

Examples

Experimental program
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Effect test

Embodiment 1

[0069] In a PRB pair with only a centralized transmission mode, the resources in a PRB pair are divided into 4 different parts, and each part is defined as an enhanced control resource element (E-CCE), which is performed in a PRB pair The sequence numbers are E-CCE 1, E-CCE 2, E-CCE 3, and E-CCE 4. Two-level pilot port determination rules and corresponding search spaces are pre-agreed on the network side and UE side. The so-called two-level pilot port The frequency port determination rules are the first-level pilot port determination rules and the second-level pilot port determination rules.

[0070] First-level pilot port determination rules:

[0071] The enhanced physical control channel resources of the E-PDCCH occupying 1 CCE in the current PRB pair are: {E-CCE 1, E-CCE 2, E-CCE 3, E-CCE 4}. At this time, the enhanced physical control channel resources The corresponding relationship with the pilot port is: in, Indicates the pilot port number corresponding to the enhan...

Embodiment 2

[0083] In a PRB pair with only a centralized transmission mode, the resources in a PRB pair are divided into 4 different parts, and each part is defined as an enhanced control resource element (E-CCE), which is performed in a PRB pair The sequence numbers are E-CCE 1, E-CCE 2, E-CCE 3, and E-CCE 4. Two-level pilot port determination rules and corresponding search spaces are pre-agreed on the network side and UE side. The so-called two-level pilot port The frequency port determination rules are the first-level pilot port determination rules and the second-level pilot port determination rules.

[0084] First-level pilot port determination rules:

[0085] The enhanced physical control channel resources of the E-PDCCH occupying 1 CCE in the current PRB pair are: {E-CCE 1, E-CCE 2, E-CCE 3, E-CCE 4}. At this time, the enhanced physical control channel resources The corresponding relationship with the pilot port is: in, Indicates the pilot port number corresponding to the enhan...

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Abstract

The invention discloses a method and a device for determining a pilot frequency port, used for supporting multi-user transmission for an enhanced physical control channel based on an orthogonal user dedicated reference signal.. The method for determining the pilot frequency port disclosed by the invention comprises the following steps that: a network side determines pilot frequency port determination rules required to be adopted currently, wherein the pilot frequency port determination rules comprise correspondence between enhanced physical control channel resource and the pilot frequency port, and the same enhanced physical control channel resource corresponds to different pilot frequency ports under different pilot frequency port determining rules; and the pilot frequency port determining rule adopted at the network side comprises that the enhanced physical control channel resource is distributed for user equipment (UE) and the pilot frequency port is determined.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for determining a pilot port. Background technique [0002] The current centralized enhanced physical downlink control channel uses high-level signaling configuration and implicit correspondence between physical resources and user-specific reference signal ports to determine the pilot port of the enhanced physical control channel. However, the existing pilot port determination schemes can only support multi-user transmission based on different user-specific reference signal scrambling sequences, and the reference signals of different users are not orthogonal, which affects the channel estimation of the reference signals. Affects the performance of multi-user transmissions. [0003] The specific introduction of the prior art is given below. [0004] Due to the introduction of technologies such as multi-user multiple input multiple output (MU-MI...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/00
Inventor 张然然赵锐拉盖施潘学明
Owner DATANG MOBILE COMM EQUIP CO LTD