Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device for configuring control channel resources based on DMRS demodulation in short tti

A technology for controlling channel resources and resource elements, which is applied in the field of control channel resource mapping and devices, and can solve problems such as short TTI resource configuration that has not been proposed

Active Publication Date: 2020-06-05
DATANG MOBILE COMM EQUIP CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, in the existing standards of the LTE system, there is no specific plan on how to configure the resources of the control channel based on DMRS demodulation in the short TTI in the control region

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for configuring control channel resources based on DMRS demodulation in short tti
  • Method and device for configuring control channel resources based on DMRS demodulation in short tti
  • Method and device for configuring control channel resources based on DMRS demodulation in short tti

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] see Figure 4 , a method for configuring control channel resources in a short TTI is shown in the figure, and the specific steps are as follows:

[0064] Step 401, determine the number of short resource element groups corresponding to one resource element group in the short TTI control region, and then enter step 402;

[0065] Optionally, step 401 is implemented by: determining the number of SREGs according to the number of resource elements in the resource unit group. Of course, it can be understood that, in this embodiment, the number of SREGs may also be determined in other manners.

[0066] Step 402: According to the number of SREGs, all resource elements in the resource unit group are numbered cyclically in the order of first frequency domain and then time domain or first time domain and then frequency domain, and then enter 403;

[0067] Step 403, combine the resource elements with the same number into one SREG.

[0068] The resource unit group (RU group, RUG f...

Embodiment 2

[0090] Assuming that the short TTI time domain includes 2 OFDM symbols, a RU group defined by an SREG contains consecutive N=3 RUs (RU N-1, RU N, RU N+1), and each RU group contains M= 4 SREGs, the SREG resource mapping is as follows Figures 5A-5C shown. The REs contained in the SREG do not include the REs occupied by DMRS used for control channel demodulation. Such as Figures 5A-5C As shown, each RUgroup contains 4 SREGs, and each SREG is composed of REs with the same label in the RU group. in Figure 5A Indicates that the short TTI only contains DMRS used for control channel demodulation in the short TTI, and does not contain CRS AP or CSI-RS AP; Figure 5B Indicates that the short TTI contains DMRS and a CRS AP for control channel demodulation in the short TTI; Figure 5C Indicates that the short TTI includes DMRS, one CRS AP and one CSI-RS AP used for control channel demodulation in the short TTI. The location of the DMRS is hypothetical and other locations and den...

Embodiment 3

[0093] Assuming that the short TTI time domain includes 7 OFDM symbols, a RU group defined by a SREG contains consecutive N=2 RUs (RU N, RU N+1), and each RU group contains M=16 SREGs, then SREG resource mapping such as Figures 6A-6B shown. The REs contained in the SREG do not include the REs occupied by DMRS used for control channel demodulation. Such as Figures 6A-6B As shown, each RU group contains 16 SREGs, and each SREG is composed of REs with the same label in the RU group. in Figure 6A Indicates that the short TTI contains the control region of the legacy (traditional) LTE system (assumed to occupy 2 OFDM symbols), including DMRS for control channel demodulation in the short TTI, including 4 CRS ports and 8 CSI-RS ports; Figure 6B Indicates that the short TTI includes DMRS and 4 CRS ports used for control channel demodulation in the short TTI. For example, SREG0 consists of all REs whose RE number is 0 in the RU group. The REs constituting the SREG may be occu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Embodiments of the present disclosure provide a DMRS demodulation-based method and apparatus for controlling channel resource configuration in a short TTI. The method comprises: determining the quantity of short resource element groups corresponding to a resource unit group in a short TTI control area; circularly numbering, according to the quantity of the short resource element groups, all resource elements in the resource unit group in a frequency domain-to-time domain sequence or in a time domain-to-frequency domain sequence; and combining resource elements having a same number into a short resource element group.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a control channel resource mapping and device based on DMRS (demodulation reference signal) demodulation in a short TTI (Transmission Time Interval, transmission time interval). Background technique [0002] The mobile Internet is subverting the traditional mobile communication business model, providing users with unprecedented experience, and profoundly affecting all aspects of people's work and life. The mobile Internet will promote the further upgrading of information interaction methods in human society, and provide users with richer business experiences such as augmented reality, virtual reality, ultra-high-definition (3D) video, and mobile cloud. The further development of the mobile Internet will bring about a thousand-fold increase in mobile traffic in the future, and promote a new round of changes in mobile communication technology and industry. The Inter...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04L27/26
CPCH04L5/0051H04L5/0091H04L27/2647H04L5/00H04L27/26
Inventor 王磊高雪娟潘学明
Owner DATANG MOBILE COMM EQUIP CO LTD