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Data transmission method and device

A data transmission method and transmission block technology, which are applied in the field of data transmission methods and devices, can solve problems such as low data coding gain coverage, and achieve the effects of improving coding gain and improving coverage performance.

Inactive Publication Date: 2013-10-30
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem of relatively low coding gain and coverage of data in the related art, the present invention provides a data transmission method and device to at least solve this problem

Method used

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  • Data transmission method and device

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Experimental program
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Embodiment 1

[0138] This embodiment provides a transmission rule of coverage enhancement coding suitable for medium-rate transmission and a method for sending and receiving indication signaling.

[0139] The method in this embodiment includes the following steps S402 and S404.

[0140] Step S402: The sending end sends control signaling information to the receiving end on the control channel, indicating whether the joint coding of coverage enhancement is enabled. If the joint coding enablement parameter of coverage enhancement is configured as true, the sending end transmits the data carried by M TTIs Perform joint encoding, where M is an integer greater than 1.

[0141] Step S404: the sending end sends the jointly encoded data to the receiving end.

[0142] Preferably, in this embodiment, the joint coding enablement parameter for coverage enhancement is configured by a higher layer, and sent on a PDSCH channel or sent on a PDCCH.

[0143] Preferably, the sending end in step S402 performs...

Embodiment 2

[0157] This embodiment provides a data transmission method, which is described in comparison with the transmission method in the related art and the data transmission method in this embodiment.

[0158] figure 1 is a schematic diagram of uplink transmission according to related technologies, in figure 1 Among them, in order to support uplink medium-rate transmission, for example, when supporting 384kbps services, the transmission per TTI is usually selected, for example, the transmission per TTI of TBS=392bits is adopted. At this time, each TTI transmits one TB. The important feature is that the 392 bits of data in each TTI are independently coded to form a mother code with a code rate of 1 / 3, and then multiple redundant versions are generated according to the mother code, and then transmitted, and Indicate the transmission control information of the TB in the corresponding n-4 PDCCH, such as information such as resource location and quantity.

[0159] Figure 7 It is a sch...

Embodiment 3

[0169] This preferred embodiment provides a data transmission method, Figure 10 It is a schematic diagram of rule 2 of the redundant coding version number transmitted in each TTI of the first transmission and retransmission in the joint coding transmission when M=4 according to the embodiment of the present invention, as shown in Figure 10 As shown, in the first transmission, the RV0 version number is transmitted in 4 consecutive TTIs; in the N retransmission, the RVN version number is transmitted in 4 consecutive TTIs.

[0170]In this embodiment, when the joint coding enabling parameter of coverage enhancement is true, the transmitted joint coding redundancy version number is related to the number of transmissions CURRENT_TX_NB, and the same version number is transmitted in four consecutive TTIs.

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Abstract

The invention discloses a data transmission method and device. The data transmission method comprises the following steps that data transmitted by M TTIs are encoded into a transmission block together by a transmitting terminal, wherein M is an integer larger than 1; a preset number of redundancy versions are generated by the transmitting terminal according to data carried by one transmission block; one redundancy version of the preset number of the redundancy versions is transmitted at each TTI of the M TTIs by the transmitting terminal according to a first predetermined rule. According to the data transmission method and device, the coverage range and coding gain of data transmission are improved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a data transmission method and device. Background technique [0002] For 3G construction, the role of coverage enhancement technology is to solve the contradiction between investment and coverage capacity. In the fierce market competition environment, operators need to increase the breadth and depth of coverage, and to improve coverage requires increased investment. Coverage enhancement technology seems to alleviate the contradiction between wide coverage and large investment to a certain extent. It can not only expand the coverage area, but also speed up the construction of the network while reducing the operator's investment. [0003] In the Long Term Evolution (LTE for short) system, the Orthogonal Frequency Division Multiple Access (OFDMA for short) technology is adopted in the downlink, which can significantly reduce the interference in the cell, but Since the same-frequ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/06
Inventor 罗薇关艳峰陈宪明袁弋非
Owner ZTE CORP
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