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Data transmission method, reception method and device

A data transmission method and data transmission technology, applied in the direction of digital transmission system, error prevention, electrical components, etc., can solve the problems of reducing transmission efficiency and system spectral efficiency, increasing terminal power consumption, multi-channel resources, etc., and reducing repeated transmission. frequency, power saving, and the effect of improving transmission performance

Active Publication Date: 2019-05-24
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, the method of using the repetition mechanism to achieve coverage enhancement needs to occupy more channel resources, which reduces the transmission efficiency and system spectrum efficiency, and greatly increases the power consumption of the terminal.

Method used

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  • Data transmission method, reception method and device
  • Data transmission method, reception method and device
  • Data transmission method, reception method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0138] Embodiment 1: Assume that the size of a transport block (TB, Transport Block) is K=20 bits, transmitted in M=8 subframes, adopting QPSK modulation, and 20 bits of encoded information (10 QPSK bits) can be transmitted in each subframe Modulation symbols), occupying 1 PRB for transmission, the transmission structure is as follows image 3 as shown, image 3 Expressed as the transmission structure under the conventional CP, each subframe has 10 modulation symbols, and the specific transmission process is as follows:

[0139] sender:

[0140] Step 1: Channel coding: the transmission block with a length of K=20 is encoded into a length S=148-bit coded sequence through turbo coding;

[0141] Step 2: Grouping:

[0142] Method 1: Group the bits:

[0143] 1) Divide the encoded sequence into group, wherein, the first 7 groups, each group contains ki=20-bit coded information, and the last group contains 8-bit coded information, wherein because the last group of 8-bit informa...

Embodiment 2

[0188] Embodiment 2: Assume that the size of a transport block (TB) is K=20 bits, transmitted in M=50 subframes, adopting QPSK modulation, and 20 bits of encoded information (10 QPSK modulation symbols) can be transmitted in each subframe , occupying 1 PRB for transmission, the transmission structure is as follows image 3 As shown, the specific transmission process is as follows:

[0189] sender:

[0190] Step 1: Channel coding: the transmission block with length K=20 undergoes turbo coding and rate matching (rate matching means repeating the 3 data streams output by turbo coding to match the corresponding code length), and is coded as length S=50*20=1000 bit-encoded sequence;

[0191] Step 2: Grouping:

[0192] Method 1: Group the bits:

[0193] 1) Divide the coded sequence into 50 groups, wherein each group contains ki=20 bits of coded information (because the coding and rate matching itself is carried out according to the total number of bits transmitted in 50 subframe...

Embodiment 3

[0210] Embodiment 3: Assuming that the size of a transmission block (TB) is K=20 bits, transmitted in M=74 subframes, and adopting QPSK modulation, 2-bit coded information (1 QPSK modulation symbol) can be transmitted in each subframe , occupying 1 PRB for transmission, the transmission structure is as follows Figure 5 As shown, the specific transmission process is as follows:

[0211] sender:

[0212] Step 1: Channel coding: the transmission block with a length of K=20 is encoded into a length S=148-bit coded sequence through turbo coding;

[0213] Step 2: Grouping:

[0214] Method 1: Bit grouping:

[0215] 1) Divide the encoded sequence into Groups, wherein each group contains ki=2 bits of encoded information;

[0216] 2) QPSK modulation is carried out to the 2-bit information in each group, and 1 QPSK modulation symbol is obtained in each group; or 2) may not be included in this step, and the QPSK modulation is placed in step 3 to realize;

[0217] Method 2: Modulat...

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Abstract

Disclosed are a data sending method, reception method and device. The data sending method comprises: channel-coding a transmission information block having a length of K bits to obtain a coded sequence having a length of S bits; transmitting the coded sequence having a length of S bits on a corresponding channel resource in M sub-frames, M ≥ 1; transmitting Qi QAM symbols {q_1, q_2, …, q_Qi} in an i-th sub-frame of the M sub-frames, the Qi QAM symbols being obtained from Ki bits in the coded sequence having a length of S bits, 1 ≤ i ≤ M; each of the QAM symbols q_j, 1 ≤ j ≤ Qi, is transmitted on at least one symbol for data transmission of the i-th sub-frame, the signal transmitted on symbols for data transmission being product of a CAZAC sequence and the QAM symbol q_j; and transmitting a pilot frequency signal on at least one symbol of the i-th sub-frame, the pilot frequency being the CAZAC sequence.

Description

technical field [0001] The present invention relates to the communication field, and in particular, relates to a data sending method, a receiving method and a device. Background technique [0002] The Internet of Things technology is in the ascendant, and the third generation mobile communication system and its long-term evolution system (LTE, Long Term Evolution) need to support the function of Machine Type Communications (MTC, Machine Type Communications). An MTC device (MTC terminal) may have some of the characteristics of various machine-to-machine (M2M, Machine to Machine, or machine-to-machine) communication characteristics, such as low mobility, small amount of transmitted data, and no delay in communication. Sensitive, requiring extremely low power consumption and other characteristics, the following are examples of some of the currently recognized characteristics of MTC communication that may exist: [0003] - MTC terminals have low mobility; [0004] -The data tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04L1/00
Inventor 高雪娟邢艳萍徐伟杰沈祖康潘学明
Owner DATANG MOBILE COMM EQUIP CO LTD
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