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

Method and device for sending and receiving data

A data transmission method and data transmission technology, applied in the field of communication, can solve the problems of reducing transmission efficiency and system spectrum efficiency, increasing terminal power consumption, multi-channel resources, etc., to reduce the number of repeated transmissions, save power, and improve transmission performance Effect

Active Publication Date: 2016-06-01
DATANG MOBILE COMM EQUIP CO LTD
View PDF4 Cites 0 Cited by
  • 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

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 sending and receiving data
  • Method and device for sending and receiving data
  • Method and device for sending and receiving data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0138] Embodiment 1: Assume that the size of a transport block (TB, TransportBlock) is K=20 bits, transmitted in M=8 subframes, and adopts QPSK modulation, and 20 bits of encoded information can be transmitted in each subframe (10 QPSK modulated symbol), 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 length K=20 is coded into a length S=148-bit coded sequence through turbocoding;

[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 information is less th...

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 whose length is K=20 undergoes turbocoding and rate matching (rate matching is to repeat the 3 data streams output by turbocoding to match the corresponding coding length), and is encoded as length S=50*20=1000 bit coding post-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 s...

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 length K=20 is coded into a length S=148-bit coded sequence through turbocoding;

[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: Modulation symb...

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

The invention discloses a method and a device for sending and receiving data. The method for sending data comprises following steps: signal channel coding is performed on transmitted information block with length of K bits to obtain coded sequence with length of S bits; the coded sequence with length of S bits is transmitted on corresponding signal channel resource in M sub-frames, wherein M>=1; Qi QAM symbols{q_1, q_2, ..., q_Qi}are transmitted in the ith sub-frame of the M sub-frames, wherein the Qi QAM symbols are obtained from Ki bits of the coded sequence with length of S bits, and 1<= i <= M; each of QAM symbols q_j, 1<=j<=Qi, is transmitted through at least one symbol for transmitting data in the ith sub-frame, wherein the signal transmitted through the symbol for transmitting data is a product of a CAZAC sequence and the QAM symbol q_j; a pilot signal is transmitted through at least one symbol of the ith sub-frame, wherein the pilot signal is a 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 technology of the Internet of Things 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 machine type communication (MTC, Machine Type Communications) function. An MTC device (MTC terminal) may have some of the characteristics of various machine-to-machine (M2M, Machine to Machine, or become machine-to-machine) communication characteristics, such as low mobility, small amount of transmitted data, insensitivity to communication delay, Features such as extremely low power consumption are required. The following are some examples of some currently recognized MTC communication features that may exist: [0003] - MTC terminals have low mobility; [0004] -The data transmission t...

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 Applications(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
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com