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Data transmission method and device

A data transmission method and transmission time interval technology, applied in the field of communication, can solve the problems of small data transmission coverage and low frequency diversity gain

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

[0009] For the transmission time interval bundling technology in the related art, the coverage of data transmission is relatively small due to the relatively low frequency diversity gain. 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

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0124] This embodiment provides a resource frequency hopping method based on TTI bundling, the method includes: if (enhanced) TTI bundling and frequency hopping are enabled, time slot n s The physical resource block of TTI Bundling used for uplink transmission is determined according to the following formula:

[0125] n ~ PRB ( n s ) = ( n ~ VRB + f hop ( i ) · N RB sb + ( ( N RB sb - 1...

Embodiment 2

[0147] This embodiment provides a data transmission method of TTI Bundling, Figure 6 It is an illustration of resource allocation of the enhanced transmission time interval bundling technology according to the embodiment of the present invention Figure 1 ,Such as Figure 6 As shown, VoIP adopts TTI Bundling technology for transmission, and TTI_Bundling_Size=4, that is, 4 TTIs. The squares of each pattern represent the initial transmission and retransmission of a VoIP voice packet, and the retransmission and initial transmission use the same HARQ process, but the resource locations are not exactly the same, depending on the frequency hopping method and the parameters indicated by the signaling. Among them, the PDCCH corresponding to the first transmission of TTI Bundling carries a resource allocation or resource grant (Grant) information, and the location and quantity information of the physical resource block is obtained according to the resource allocation information and ...

Embodiment 3

[0173] This embodiment provides a data transmission method of TTI Bundling, Figure 7 It is an illustration of resource allocation of the enhanced transmission time interval bundling technology according to the embodiment of the present invention Figure II ,Such as Figure 7 As shown, VoIP adopts TTI Bundling technology for transmission, and TTI Bundling Size=4, that is, 4 TTIs. The squares of each pattern represent the initial transmission and retransmission of a VoIP voice packet, and the retransmission and initial transmission use the same HARQ process, but the resource locations are not exactly the same, depending on the frequency hopping method and the parameters indicated by the signaling. Among them, the PDCCH corresponding to the first transmission of TTI Bundling carries a resource allocation or resource grant (Grant) information, and the location and quantity information of the physical resource block is obtained according to the resource allocation information and...

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Abstract

The invention discloses a data transmission method and device. The data transmission method comprises the following steps that a frequency domain position used for transmitting a physical resource block in a time slot of TTI Bundling is determined according to parameters of the TTI Bundling in a frequency hopping mode, and data are transmitted on the time-frequency resources corresponding to the frequency domain position of the physical block in a determined time slot. According to the data transmission method and device, the coverage range of TTI Bundling data transmission is 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] Capacity and coverage are two important performance indicators in wireless communication systems. In order to increase capacity, co-frequency networking is generally adopted, but co-frequency networking increases inter-cell interference, resulting in reduced coverage performance. [0003] For example, in the Long Term Evolution (LTE for short) system, the Orthogonal Frequency Division Multiple Access (OFDMA) technology is used for the downlink, and the single-carrier-frequency-division multiple access technology is used for the uplink. Single Carrier-Frequency Division Multiple Access (Single Carrier-Frequency Division Multiple Access, abbreviated as SC-FDMA) technology, but because the same frequency mode is generally used for networking, inter-cell interference (Inter-Cell Interference, abbreviated as ICI) i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04B1/713
Inventor 关艳峰陈宪明袁弋非张峻峰
Owner ZTE CORP