Method, apparatus and system of determining coded modulation parameter

A coding modulation and parameter technology, applied in the field of Internet of Things, can solve the problem that the coding modulation parameter method cannot be applied and cannot be correctly encoded and decoded.

Active Publication Date: 2017-07-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the following differences between LTE and LTE-A systems and Narrowband Internet of Things (NB-IOT) systems: NB-IOT and LTE / LTE-A systems have different bandwidths, multiple access methods, coding methods, and resource allocation. Major changes, such as the introduction of single-tone multiple access and multiple-tone multiple access in the uplink, tail-biting convolutional codes instead of turbo codes in the downlink, etc., make the method of determining coding and modulation parameters in LTE and LTE-A systems unable to be applied to In the NB-IOT system, there is no relevant technology in the prior art to disclose the method of determining the encoding and modulation parameters for the NB-IOT system, resulting in the inability to correctly encode and decode

Method used

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  • Method, apparatus and system of determining coded modulation parameter
  • Method, apparatus and system of determining coded modulation parameter
  • Method, apparatus and system of determining coded modulation parameter

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0259] In the first embodiment, the terminal receives the downlink control information sent by the base station, and according to the resource allocation field and the MCS field I in the downlink control information MCS Determine any one or more of: TBS, number of repetitions, redundancy version.

[0260] Wherein, the downlink control information includes the MCS field I MCSand resource allocation fields.

[0261] Wherein, the resource allocation field is used to indicate the RU-based resource allocation of a TBS, and the MCS field is used to indicate the coding and modulation mode.

[0262] Among them, RU is a time-frequency two-dimensional resource including Nsc consecutive frequency domain subcarriers and Nsym consecutive OFDM symbols in the time domain, each RU includes NscNsym0 resource elements, and Nsc and Nsym are integers greater than or equal to 1.

[0263] Among them, according to the resource allocation field and the MCS field I in the downlink control informatio...

no. 2 example

[0285] In the second embodiment, the terminal receives the downlink control information sent by the base station, and determines any one or more of the following according to the TBS indication field and the resource allocation field: MCS, number of repetitions, and redundancy version.

[0286] Among them, any one or more of the following are determined according to the TBS indication field and the resource allocation field: MCS, number of repetitions, and redundancy version include:

[0287] The terminal determines the number Nru of RUs occupied by a TB according to the resource allocation field; the terminal determines any one or more of the following according to the TBS indication field and the number Nru of RUs occupied by a TB: MCS, number of repetitions Nrep, and redundancy version RV.

[0288] The number Nru of RUs occupied by a TB is the number of RUs occupied by a TB when performing one HARQ transmission, or the number of RUs occupied by a TB before repeated processin...

no. 3 example

[0293] In the third embodiment, the terminal receives the downlink control information sent by the base station, and the terminal determines any one or more of the following according to the MCS in the downlink control information and the joint coding field of the predefined transmission information and the number of RUs occupied by one TB: TBS, repetition Times, redundant versions.

[0294] Among them, the terminal determines any one or more of the following according to the MCS in the downlink control information, the joint coding field of the predefined transmission information, and the number of RUs occupied by one TB: TBS, repetition times, and redundancy versions include:

[0295] The terminal determines the number Nru of RUs occupied by a TB according to the resource allocation field; the terminal determines any one or more of the following according to the MCS and the joint coding field of the predefined transmission information and the number Nru of RUs occupied by a T...

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Abstract

The invention discloses a method, apparatus and system of determining a coded modulation parameter. The method of determining a coded modulation parameter includes the steps: a terminal receives the downlink control information from a base station, and determines the coded modulation parameter according to a domain for determining the coded modulation parameter in the downlink control information. The method of determining a coded modulation parameter can determine the coded modulation parameter according to a domain for determining the coded modulation parameter in the downlink control information so as to realize determination of the coded modulation parameter in an NB-IOT (Narrow Band-Internet of Things) system.

Description

technical field [0001] The present invention relates to but not limited to Internet of Things technology, especially a method, device and system for determining encoding and modulation parameters. Background technique [0002] In a wireless communication system, different users use multiple access technology to share wireless communication resources. Common multiple access technologies include Frequency Division Multiple Access (FDMA, Frequency Division Multiplexing Acess), Time Division Multiple Access (TDMA, Time Division Multiplexing Access), Code Division Multiple Access (CDMA, Code Division Multiplexing Acess), Orthogonal Frequency Division Multiplexing Access (OFDMA, Orthogonal Frequency Division Multiplexing Access), Single Carrier Orthogonal Frequency Division Multiplexing Access (SC-OFDMA, Single Carrier-Orthogonal Frequency Division Multiplexing Access ). [0003] In the Release-12 Long Term Evolution (LTE, Long Term Evolution) system, uplink and downlink adopt S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L27/26
CPCH04L1/001H04L27/2647H04L27/2602H04L1/0009H04L1/0031H04L1/0032H04L1/08H04L1/1819H04L1/0003H04W72/23H04W72/232H04L5/0094H04L1/1812H04L27/2605
Inventor 徐俊戴博许进陈泽为方惠英
Owner ZTE CORP
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