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Method and device for sending uplink demodulation reference signal DMRS

A technique for demodulating reference signals and sending methods, applied in the field of sending methods and devices for uplink demodulating reference signals, capable of solving problems such as inability to enhance uplink DMRS multiplexing functions

Active Publication Date: 2017-10-24
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The present invention provides a method and device for sending an uplink demodulation reference signal DMRS, so as to at least solve the problem in the related art that the multiplexing function of the uplink DMRS cannot be enhanced

Method used

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  • Method and device for sending uplink demodulation reference signal DMRS
  • Method and device for sending uplink demodulation reference signal DMRS
  • Method and device for sending uplink demodulation reference signal DMRS

Examples

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Embodiment 1

[0089] In this embodiment, the base station on the network side configures the parameters required for sending the uplink demodulation reference signal DMRS for the user terminal (same as the above-mentioned terminal), and notifies the above-mentioned user terminal of the configured parameters through downlink control signaling or high-level signaling ; This parameter can include:

[0090] Frequency comb index of uplink DMRS.

[0091]Optionally, the above-mentioned base station indicates whether the time-domain repetition factor of the uplink DMRS is 2 or 4 or 8 is enabled through downlink control signaling or high-level signaling, or indicates whether the interleaved frequency division multiple access IFDMA of the uplink DMRS is enabled, or indicates Whether the number of frequency combs for the uplink DMRS is 2, 4, or 8. The schematic diagram of IFDMA is shown as Figure 5 shown.

[0092] When the base station does not configure or indicate that the time domain repetition...

Embodiment 2

[0095] In this embodiment, the base station on the network side configures the parameters required for sending the uplink demodulation reference signal DMRS for the user terminal, and notifies the user terminal of the configured parameters through downlink control signaling or high-layer signaling (corresponding to the above-mentioned terminal); this parameter can include:

[0096] The DMRS cyclic shift of each layer or the first layer of uplink spatial multiplexing (corresponding to the above-mentioned uplink DMRS cyclic shift), the DMRS orthogonal mask of each layer or the first layer of uplink spatial multiplexing (corresponding to the above-mentioned uplink DMRS orthogonal Mask), frequency comb index of uplink DMRS.

[0097] Optionally, the base station may jointly indicate the uplink DMRS cyclic shift, the uplink DMRS orthogonal mask, and the frequency comb index of the uplink DMRS through downlink control signaling, for example, as shown in Table 2 or Table 3 or Table 4 ...

Embodiment 3

[0110] In this embodiment, the base station on the network side configures the parameters required for sending the uplink demodulation reference signal DMRS for the user terminal (corresponding to the above-mentioned terminal), and notifies the user of the configured parameters through downlink control signaling or high-layer signaling terminal; the above parameters can include:

[0111] The DMRS cyclic shift of each layer or the first layer of uplink spatial multiplexing (corresponding to the above-mentioned DMRS cyclic shift), the DMRS orthogonal mask of each layer or the first layer of uplink spatial multiplexing (corresponding to the above-mentioned DMRS orthogonal mask) mask). Wherein, the above-mentioned uplink DMRS orthogonal mask may be a 4-bit uplink DMRS orthogonal mask.

[0112] In this embodiment, the time-frequency resources required for sending the uplink DMRS may include the following two methods:

[0113] method one:

[0114] Such as Figure 6 As shown, the...

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Abstract

The invention provides a method and a device for sending an uplink demodulation reference signal DMRS. The method includes the following steps: configuring parameters for a terminal to send an uplink DMRS, wherein the parameters include at least one of the following parameters: uplink DMRS cyclic shift, uplink DMRS orthogonal mask, uplink DMRS frequency comb index, orthogonal mask enable control bit, piecewise generated DMRS sequence indicator, and the number of uplink DMRS frequency combs; and sending the configured parameters to the terminal, wherein the parameters are used to indicate the terminal to send an uplink DMRS according to the parameters. According to the invention, the problem that the multiplexing function of an uplink DMRS cannot be enhanced in the related technology is solved, the multiplexing function of an uplink DMRS can be enhanced, and the demand of uplink multi-user pairing is satisfied.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for sending an uplink demodulation reference signal (Demodulation Reference Signal, DMRS for short). Background technique [0002] The uplink physical channels of the Long Term Evolution (abbreviated as LTE) system include a physical random access channel (Physical Random Access Channel, abbreviated as PRACH), a physical shared channel (Physicaluplink shared channel, abbreviated as PUSCH), and a physical uplink control channel. (Physical Uplink Control Channel, referred to as PUCCH). The uplink scheduling information (Uplink Scheduling Information) of the PUSCH may be sent by the network side to a target user equipment (User Equipment, UE) (also called terminal). Wherein, the uplink scheduling information includes: resource allocation related to the physical uplink shared channel, modulation and coding scheme, and DMRS cyclic shift (Cyclic Shift) and other ...

Claims

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Application Information

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IPC IPC(8): H04L5/00
CPCH04L5/0048H04L5/0051H04L5/00
Inventor 王瑜新鲁照华陈艺戬李儒岳李永肖华华吴昊蔡剑兴
Owner ZTE CORP