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Uplink transmission method and device for internet-of-things system and internet-of-things terminal

A technology of an Internet of Things system and a transmission method, which is applied in the direction of synchronization devices, transmission systems, digital transmission systems, etc., can solve problems such as large system overhead, achieve the effects of reducing transmission delay, reducing resource consumption, and increasing decoding complexity

Inactive Publication Date: 2012-12-05
淮安意德健康管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide an uplink transmission method and device for the Internet of Things system to solve the problem of high system overhead caused by signaling interaction in high-speed business systems

Method used

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  • Uplink transmission method and device for internet-of-things system and internet-of-things terminal
  • Uplink transmission method and device for internet-of-things system and internet-of-things terminal
  • Uplink transmission method and device for internet-of-things system and internet-of-things terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] refer to figure 1 , is a flow chart of an uplink transmission method of an Internet of Things system according to Embodiment 1 of the present invention.

[0063] In the Internet of Things business system, data transmission involves the terminal and the network side, and the uplink transmission process is as follows:

[0064] Step 101, when the terminal has uplink service data to be sent, the uplink synchronization code is sent together with the uplink service data to be sent; when the terminal has no uplink service data to be sent, the uplink synchronization code is not sent;

[0065] Among them, the "send together" can be understood as:

[0066] The uplink synchronization code and uplink service data can be sent in the same time domain scheduling unit.

[0067] Moreover, the uplink synchronization code and the uplink service data may also be sent in a TDM (Time Division Multiplexing, Time Division Multiplexing) manner in the same time domain scheduling unit.

[0068...

Embodiment 2

[0079] Based on the first embodiment, the following takes the frame structure of the LTE system as an example to specifically describe the process of sending and receiving uplink service data.

[0080] The process of sending uplink service data by the terminal is as follows:

[0081] As mentioned above, the smallest time-domain scheduling unit of the LTE system is a subframe, and the length of a subframe is 1ms. The 1ms is composed of two slots (slots), each slot is 0.5ms; each slot In the case of normal CP (Normal Cyclic Prefix, normal cyclic prefix), it consists of 7 symbols.

[0082] The minimum resource scheduling unit of the LTE system in the frequency domain is 1 RB (Resource Block, resource block), and 1 RB is composed of 12 consecutive subcarriers (subcarriers) in the frequency domain, and the interval between each subcarrier is 1 5kHz, that is to say, the size of one RB in the frequency domain is 180kHz. Assume that the system bandwidth is 1.4M, and the correspondin...

Embodiment 3

[0089] refer to figure 2 , is a structural diagram of an uplink transmission device of an Internet of Things system according to Embodiment 3 of the present invention.

[0090] Wherein, the IoT system includes a terminal and a network side, and the device mainly includes:

[0091] The data sending module 21 is located at the terminal, and is used for sending the uplink synchronization code together with the uplink service data to be sent when the terminal has uplink service data to be sent; when the terminal has no uplink service data to be sent, the uplink synchronization code is not sent;

[0092] The data receiving module 22, located on the network side, is used to receive the uplink synchronization code and uplink service data, perform uplink synchronization according to the received uplink synchronization code, and obtain the starting position and length of the received uplink service data; and according to the received uplink synchronization code The received uplink se...

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Abstract

The invention provides an uplink transmission method and an uplink transmission device for an internet-of-things system and a user terminal and a base station applied to an internet of things, and aims to solve the problem of high system overhead brought by using signaling interaction in a high-rate service system. The uplink transmission method comprises the following steps of: transmitting an uplink synchronous code together with uplink service data to be transmitted when the terminal has the uplink service data for transmission; and not transmitting the uplink synchronous code when the terminal has no uplink service data for transmission. Because the signaling interaction is not adopted during the uplink transmission, the signaling cost is saved, the time for uplink synchronization on a network side can be shortened and the transmission delay of the service data can be reduced so as to reduce the resource consumption.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to an uplink transmission method of an Internet of Things system, an uplink transmission device of an Internet of Things system, and a base station and a user terminal applied to the Internet of Things. Background technique [0002] In order to be in a favorable position in the highly competitive environment of mobile communication technologies in the future and to meet the growing diversified needs of users, the 3GPP organization approved the project work on 3GPP Long Term Evolution (LTE) at the end of 2004 to accelerate the formulation of new Air interface and radio access network standards. The goals of 3G LTE are: higher data rate, lower delay, improved system capacity and coverage, and lower cost. Based on the above goals, the LTE system uses key technologies such as OFDM (Orthogonal Frequency Division Multiplexing) and MIMO (Multiple-Input Multiple-Out-pu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00H04L1/00
Inventor 张辉刘广宋磊
Owner 淮安意德健康管理有限公司