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DMRS (demodulation reference signal) as well as sending method and device thereof

A sending method and signaling technology, applied in the field of communication, can solve the problems of poor channel estimation quality and the inability of UE to achieve orthogonality, and achieve the effect of improving the accuracy rate

Inactive Publication Date: 2012-04-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Aiming at the problem in the related art that UEs between different cells cannot achieve orthogonality, so that the channel estimation quality of the uplink CoMP users at the receiving end is relatively poor, the present invention provides a method and device for sending DMRS and its signaling to at least solve the problem of the problem

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  • DMRS (demodulation reference signal) as well as sending method and device thereof
  • DMRS (demodulation reference signal) as well as sending method and device thereof
  • DMRS (demodulation reference signal) as well as sending method and device thereof

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Embodiment 1

[0113] This preferred embodiment provides a signaling configuration method for an uplink demodulation reference signal, the method includes: a base station issues signaling configuration information for sending an uplink demodulation reference signal to a user. Preferably, the signaling configuration information includes one or more of the following information: user-specific (UE specific) sequence group number offset, user-specific cell ID number offset, user-specific sequence shift Bit pattern offset.

[0114] As a preferred embodiment, the user-specific sequence group number offset is used to determine the sequence group number of the uplink DMRS: u=[f gh (n s )+f ss +Δ u ]mod30, or u=[f gh (n s )+(f ss +Δ u ) mod 30] mod 30, where, Δ u That is, the user-specific sequence group number offset, Δ u ∈ {0, 1, ..., 29}.

[0115] As another preferred embodiment, the user-specific cell ID number offset and the user-specific sequence shift pattern offset are used to deter...

Embodiment 2

[0127] This embodiment provides a signaling configuration method for an uplink demodulation reference signal. The method includes: a base station sends signaling configuration information for sending an uplink demodulation reference signal to a user. Wherein, the signaling configuration information includes one or more of the following information: user-specific cell ID number offset, user-specific sequence shift pattern offset.

[0128] This preferred embodiment takes Figure 5 Take the schematic diagram of uplink CoMP transmission as an example, assuming the cell ID number of cell 1 is 0, the cell ID number of cell 2 is 30, and the uplink CoMP transmission cells of UE1 are cell 1 and cell 2. If the time-frequency positions of UE1 and UE2 overlap, in order to reduce mutual interference, it is necessary to make the uplink DMRS sequences of UE1 and UE2 orthogonal through cyclic shift or OCC multiplexing.

[0129] The configuration method in the related art will be described ...

Embodiment 3

[0136] This embodiment provides a signaling configuration method for an uplink demodulation reference signal. The method includes: a base station sends signaling configuration information for sending an uplink demodulation reference signal to a user. Wherein, the signaling configuration information includes one or more of the following information: a user-specific (UE specific) sequence group number offset, and a user-specific sequence shift pattern offset.

[0137] In this preferred embodiment, the user determines the sequence group number of the uplink DMRS by using the user-specific sequence group number offset and / or the user-specific sequence shift pattern offset in one of the following ways.

[0138] Method 1: u=[f gh (n s )+f ss +Δ u ]mod30, or u=[f gh (n s )+(f ss +Δ u )mod30]mod30, where, Δ u That is, the user-specific sequence group number offset, Δ u ∈ {0, 1, ..., 29}.

[0139] Method 2: u=[f gh (n s )+f ss ] mod30.

[0140] Preferably, for PUCCH, it c...

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Abstract

The invention discloses a DMRS (demodulation reference signal) as well as a sending method and device thereof, wherein the sending method of the DMRS comprises: UE (user equipment) receives user individual signaling configuration information sent by a base station and used for the UE to determine the DMRS; the UE uses the user individual signaling configuration information to determine the DMRS; and the UE sends the DMRS. According to the invention, the quality accuracy of performing channel estimation on an uplink CoMP (coordinated multi-point) user by a receiving terminal is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method and device for sending a demodulation reference signal (Demodulation Reference Signal, DMRS for short) and its signaling. Background technique [0002] In the Long Term Evolution (LTE for short) system of The 3rd Generation Partnership Project (abbreviated as 3GPP), centralized scheduling of base stations is used to control user equipment (User Equipment, UE for short). ) transmission on a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH for short). [0003] The uplink scheduling information (Uplink Scheduling Information) for the PUSCH is sent by the base station to the target UE through a physical downlink control channel (Physical Downlink Control Channel, PDCCH for short). The uplink scheduling information includes: resource allocation related to the physical uplink shared channel, modulation and coding scheme, DMRS cyclic shift (Cyclic Shift)...

Claims

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Application Information

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IPC IPC(8): H04W72/04
CPCH04W4/02H04L25/0204H04L5/0094H04L5/0035H04L25/0226H04L5/0051
Inventor 王瑜新郝鹏戴博梁春丽
Owner ZTE CORP
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