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Data transmission method and device

A data transmission method and data technology, applied in the field of communication, can solve the problems of limited PUSCH coverage and limited transmission power, and achieve the effect of excellent performance and flexible binding transmission

Active Publication Date: 2018-06-08
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Embodiments of the present invention provide a data transmission method and device to at least solve the technical problem of limited PUSCH coverage in the prior art due to limited transmission power of the UE

Method used

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  • Data transmission method and device
  • Data transmission method and device

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Embodiment 1

[0095] According to one aspect of the present invention, a data transmission method is provided, including: the sending end determines the transmission mode according to the received indication signaling, and when the binding transmission is enabled, further determines the TTI binding mode according to the indication of the binding mode signaling. Set the size of the number (TTI_BUNDLE_SIZE), the sender encodes the data to be sent to generate a predetermined number of encoded redundant versions, and the sender sends one of the predetermined number of redundant versions on each TTI of TTI_BUNDLE_SIZE TTIs. remaining version.

[0096] Among them, the sending end encodes the data to be sent according to the instructions, and the instructions include two types, one is the TTI bundling enabling flag, which is configured by the upper layer, and uses 1 bit to indicate, and the other is the TTI bundling mode flag ( Also called parameter) (TTI Bundling-mode), configured by the upper la...

Embodiment 2

[0131] This embodiment provides a data transmission method, Figure 7 is a flowchart of a data transmission method according to an embodiment of the present invention, such as Figure 7 As shown, the method includes.

[0132] Step S702: The sender receives the transmission mode indication, and determines the size of TTI_BUNDLE_SIZE;

[0133] Step S704: the sending end determines the TTI bundling transmission mode;

[0134] When the TTI bundling enable flag is 0, TTI bundling is not enabled, it can be considered that TTI_BUNDLE_SIZE is 1, when the TTI bundling enable flag is 1, further determine the TTI bundling mode flag;

[0135] Step S706: When the TTI bundling mode flag is 0, transmit according to bundling mode 1, and TTI_BUNDLE_SIZE is 4;

[0136] Step S708: When the TTI bundling mode flag is 1, transmit according to bundling mode 2, and TTI_BUNDLE_SIZE is 8;

[0137] Step S710: The sending end encodes the data to be transmitted to generate a predetermined number of re...

Embodiment 3

[0143] This embodiment provides a data transmission method. The difference between this embodiment and Embodiment 1 is: when the TTI bundling enable flag is 1 and the TTI bundling mode flag is 1, the sending end detects the uplink assignment of the PDCCH in subframe n information, and / or the PHICH channel transmission information of subframe n-3 to determine the scheduling information of the sending end in subframe n+4 (the first bound subframe).

[0144] Figure 8 It is the HARQ timing according to the TTI BUNDLING mode 2 under FDD in the embodiment;

[0145] This bundling mode is mainly used in the VoIP business model. When the TTI bundling enable flag is 1 and the TTIBUNDSIZE size is 10, within the bound frame, the terminal adopts a non-adaptive method to retransmit 10 times in a row (including the first transmission) , when the NACK feedback signaling is received in frame n-3, continue to bind and retransmit 10 times starting from the n+4th time.

[0146] If the scheduli...

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Abstract

The invention discloses a data transmission method and device. The method comprises: a sending end determines the TTIBundling transmission mode used for data transmission; the sending end encodes the transmitted data to generate a coding redundancy version; the sending end sends the data according to the TTIBundling transmission mode Encode the redundant version. The present invention can solve the technical problem of limited PUSCH coverage due to limited UE transmission power in the prior art.

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 most of the sa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/16H04L1/18
Inventor 罗薇关艳峰陈宪明左志松
Owner ZTE CORP
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