NB-IoT physical downlink channel complex method, base station and user equipment

A technology of physical downlink channel and narrow-band Internet of Things, which is applied in the direction of transmission path sub-channel allocation, signaling allocation, wireless communication, etc., and can solve problems such as inapplicability

Inactive Publication Date: 2017-07-04
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the multiplexing mechanism based on PRB (or PRB pair) is not applicable in NB-IoT

Method used

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  • NB-IoT physical downlink channel complex method, base station and user equipment
  • NB-IoT physical downlink channel complex method, base station and user equipment
  • NB-IoT physical downlink channel complex method, base station and user equipment

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Experimental program
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Embodiment 1

[0055] image 3 It shows a schematic diagram of multiplexing more than one narrowband Internet of Things physical downlink channel based on an enhanced channel element (Enhanced ChannelElement, ECE) in the same subframe, wherein one ECE consists of four enhanced resource element groups (Ehanced Resource Element Group, EREG) composition. A NB-IoT physical downlink channel (NB-PDCCH or NB-PDSCH) consists of one or more enhanced channel units. Therefore, in this embodiment, up to four narrowband Internet of Things physical downlink channels can be multiplexed in the same subframe.

[0056] EREGs are used to define the mapping between NB-PDCCH and / or NB-PDSCH to resource elements. In a NB-IoT downlink subframe (or a physical resource block pair), there are 16 EREGs numbered from 0 to 15, and each EREG consists of 9 resource units. Such as image 3 As shown, in a downlink subframe of the NB-IoT, according to the frequency domain first and then the time domain, in an ascending o...

Embodiment 2

[0067] Figure 5 It shows a schematic diagram of multiplexing more than one narrowband Internet of Things physical downlink channel based on ECE in the same subframe, wherein one ECE is composed of two EREGs. A NB-IoT physical downlink channel (NB-PDCCH or NB-PDSCH) consists of one or more enhanced channel units. Therefore, in this embodiment, up to 8 narrowband Internet of Things physical downlink channels can be multiplexed in the same subframe.

[0068] EREGs are used to define the mapping between NB-PDCCH and / or NB-PDSCH to resource elements. In a NB-IoT downlink subframe (or a physical resource block pair), there are 16 EREGs numbered from 0 to 15, and each EREG consists of 9 resource units. Such as Figure 5 As shown, in a downlink subframe of NB-IoT, according to the frequency domain first and then the time domain, the bearer antenna port P(7, 8, 9, 10, 11, 12, 13, 14) Resource elements for demodulation reference signaling (that is, the 24 resources located on the 5...

Embodiment 3

[0076] Figure 7 It shows a schematic diagram of multiplexing multiple NB-PDSCHs (or NB-PDCCHs) based on an Enhanced Channel Element (Enhanced Channel Element, ECE) in the same subframe. In this embodiment, multiple NB-PDCCHs are allowed to be multiplexed in the same subframe based on ECE (or ECCE), or multiple NB-PDSCHs are multiplexed in the same subframe based on ECE (or ESCE), but NB is not allowed - PDCCH and NB-PDSCH are multiplexed in the same subframe. Moreover, in one NB-IoT downlink subframe, the number of multiplexed NB-PDSCHs (or NB-PDCCHs) is an integer greater than 4 and less than or equal to 8. It can also be said that in one NB-IoT downlink subframe, the number of multiplexed NB-IoT UEs is an integer greater than 4 and less than or equal to 8. In the following, multiplexing of multiple NB-PDSCHs in the same subframe is taken as an example for description.

[0077] EREGs are used to define the mapping between NB-PDSCH and resource elements. In a NB-IoT downl...

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Abstract

Embodiments of the invention provide a narrowband internet of thing (NB-IoT) physical downlink channel complex transmission method, and a corresponding base station and user equipment performing the method. According to the embodiments of the invention, the base station comprises a mapping unit and a transmitting unit, wherein the mapping unit is used for multiplexing more than one NB-IoT physical downlink channel in a same sub frame, the NB-IoT physical downlink channel comprises an NB-IoT physical downlink control channel (NB-PDCCH) and / or an NB-IoT physical downlink shared channel (NB-PDSCH), the maximum particle size of resource allocation of the NB-IoT physical downlink channel takes an enhanced resource element group (EREG) as a unit, the EREG consists of time-frequency two-dimensional limited multiple resource elements in the same sub frame, and the rransmitting unit is used for transmitting downlink sub frames.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and more specifically, the present disclosure relates to a multiplexing method of a physical downlink channel, a configuration method of a reference signaling antenna port for demodulation of a physical downlink channel, a base station and a user equipment. Background technique [0002] With the rapid growth of mobile communication and the great advancement of technology, the world will move towards a fully interconnected network society, that is, anyone or anything can obtain information and share data at any time and anywhere. It is estimated that by 2020, the number of connected devices will reach 50 billion, of which only about 10 billion may be mobile phones and tablet computers, and the rest are not machines that talk to people, but machines that talk to each other. Therefore, how to design a system to better support the Internet of Everything is a topic that requires...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00
CPCH04L5/003H04L27/2602H04W72/04H04W72/1273H04L5/0053H04W72/0446H04W72/23
Inventor 刘仁茂张萌
Owner SHARP KK
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