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A method, device and terminal equipment for transmitting downlink signals

A technology of terminal equipment and transmission channel, which is applied in transmission path sub-channel allocation, pilot signal allocation, wireless communication, etc., and can solve problems such as insufficient resources

Active Publication Date: 2017-12-15
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondly, in the scenario of dense LPN deployment, according to the provisions of the existing protocol, the resources for transmitting CSI-RS are not enough

Method used

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  • A method, device and terminal equipment for transmitting downlink signals
  • A method, device and terminal equipment for transmitting downlink signals
  • A method, device and terminal equipment for transmitting downlink signals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Such as image 3 As shown, Embodiment 1 of the present invention here proposes a method for transmitting downlink signals, such as image 3 As shown, the specific processing flow is as follows:

[0084] Step 31: Reserve REs among the REs used to transmit downlink DM-RSs.

[0085] Wherein, for different UEs, reserving REs in REs used to transmit DM-RSs may include but not limited to include at least one of the following two ways:

[0086] The first way: reserve REs in the REs used to transmit DM-RS included in the subband configured for the UE.

[0087] The second manner: when sending the downlink reference signal to the UE and at least one other UE occupying a different part of the system bandwidth, reserve REs in the REs used to transmit downlink data included in the subbands of the other at least one UE.

[0088] It should be noted that, in the specific implementation of the above two methods, when reserving REs in the REs used to transmit DM-RS, any one of the above...

Embodiment 2

[0165] Correspondingly, Embodiment 2 of the present invention here proposes a method for transmitting downlink signals, which is applied on the terminal side, and its specific processing flow is as follows:

[0166] Step 1: The terminal device obtains REs reserved by the network side among REs used for transmitting downlink DM-RSs.

[0167] Wherein, for different UEs, the network side may, but is not limited to, include at least one of the following two methods in reserving REs in the REs used to transmit DM-RSs:

[0168] The first way: reserve REs in the REs used to transmit DM-RS included in the subband configured for the UE.

[0169] The second manner: when sending the downlink reference signal to the UE and at least one other UE occupying a different part of the system bandwidth, reserve REs in the REs used to transmit downlink data included in the subbands of the other at least one UE.

[0170] In the subband configured for the UE, the number of REs reserved for the tran...

Embodiment 3

[0203] In Embodiment 1 and Embodiment 2 above, the downlink signal transmission method proposed here in the present invention can be executed on the network side or on the terminal side. If it is executed on the network side or on the terminal side alone, only the The technical solutions proposed in Embodiment 1 and Embodiment 2 of the present invention can be realized by agreement. Of course, the network side can also inform the terminal side of the relevant reserved information and configuration information, and the terminal side can perform corresponding processing according to the relevant information notified by the network side. , based on this, Embodiment 3 of the present invention proposes a method for transmitting downlink signals, such as Figure 9 As shown, the specific processing flow is as follows:

[0204] Step 91 , the network side reserves REs among the REs used to transmit the downlink DM-RS.

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Abstract

The invention discloses a method, device and terminal equipment for transmitting downlink reference signals, which can increase the amount of resources used for transmitting CSI-RS without affecting system performance. Wherein, the method includes: reserving REs in resource elements RE used for transmission of downlink demodulation reference signal DM-RS; The channel state information reference signal CSI-RS is transmitted on the data RE.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, device and terminal equipment for transmitting downlink signals. Background technique [0002] After a long period of development, the cellular mobile communication system has developed into the 4th generation (4G) wireless communication system. The cellular mobile communication system represented by the Term Evolution-Advanced) communication system has completed the eleventh version (also called Rel-11), and is currently working on the twelfth version (Rel-12) research stage. [0003] In the LTE-A Rel-12 protocol, small cell enhancement is a direction that attracts attention. In the small cell enhancement technology, a low power node (LPN, Low Power Node) is used to provide greater capacity network coverage for hotspot areas and indoors. Since the coverage range of the LPN is usually around 20-40 meters, in a co-frequency scenario where the num...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/26H04W24/10
CPCH04L5/0048
Inventor 黎超
Owner HONOR DEVICE CO LTD