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Data transmission method and device

A data transmission method and a technology for sending data, which are applied in the field of data transmission methods and devices, can solve the problems of low frequency diversity gain and small data transmission coverage, and achieve the effect of improving frequency diversity gain

Inactive Publication Date: 2017-08-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problem in the related art that the frequency diversity gain of the data transmission method is relatively low and the coverage of the data transmission is relatively small, the present invention provides a data transmission method and device to at least solve the problem

Method used

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  • Data transmission method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] The preferred embodiment provides an enhanced frequency hopping manner for uplink resources, which can obtain more frequency diversity gain without increasing control overhead.

[0082] In this preferred embodiment, the transmitter determines the frequency domain position of the physical resource block in the time slot used for sending data through frequency hopping, and initializes the random sequence c in the frequency hopping through the following parameters: cell identification and frame sequence number. Better,

[0083] Preferably, the inter-subband Hopping function f hop (i) Determined by:

[0084]

[0085] Preferably, the Hopping function f in the subband m (i) Determined by:

[0086]

[0087] In this preferred embodiment, when uplink frequency hopping is enabled, time slot n s The physical resource block used for uplink transmission is determined according to the following formula:

[0088]

[0089] Preferably, i is determined by one of the following methods:

[0090] ...

Embodiment 2

[0096] The preferred embodiment provides a data transmission method, Figure 5 It is a schematic diagram of enhanced type 2 inter-subframe resource hopping according to an embodiment of the present invention, such as Figure 5 As shown, subframe 0 and subframe 8 are resource positions occupied by the first transmission and retransmission of data, and subframe 2 and subframe 10 are resource positions occupied by the first transmission and retransmission of data.

[0097] In this preferred embodiment, data transmission can be performed according to the following formula:

[0098] Physical resource block offset index:

[0099] (Formula 1)

[0100] Among them, the frequency hopping variable (Formula 2)

[0101] Among them, the subband frequency hopping function (Formula 3)

[0102] Among them, the image frequency hopping function f m (i)=c(10*i) Formula 4

[0103] Among them, the number of resource blocks in the subband (Formula 5)

[0104] among them, (Formula 6)

[0105] (Formula 7)

[0...

Embodiment 3

[0121] The preferred embodiment provides a data transmission method, Image 6 It is a schematic diagram of enhanced type 2 inter-subframe and intra-subframe resource hopping according to an embodiment of the present invention, such as Image 6 As shown, subframe 0 and subframe 8 are resource positions occupied by the first transmission and retransmission of data, and subframe 2 and subframe 10 are resource positions occupied by the first transmission and retransmission of data.

[0122] In this preferred embodiment, data transmission can be performed according to the following formula:

[0123] Physical resource block offset index:

[0124] (Formula 8)

[0125] Among them, the frequency hopping variable i=n s (Formula 9)

[0126] Among them, the subband frequency hopping function (Formula 10)

[0127] Among them, the image frequency hopping function f m (i)=c(10*i) formula (11)

[0128] Among them, the number of resource blocks in the subband (Formula 12)

[0129] among them, (Formula...

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Abstract

The invention discloses a data transmission method and device. The method includes: determining the frequency domain position of a physical resource block in a time slot used to send data through a frequency hopping method, wherein the random sequence of the frequency hopping method is determined by a cell identifier and a frame The serial number is initialized; the data is transmitted on the time-frequency resource corresponding to the determined frequency domain position of the physical resource block. Through the invention, the coverage of data transmission is improved.

Description

Technical field [0001] The present invention relates to the field of communications, in particular to a data transmission method and device. Background technique [0002] In the Long Term Evolution (LTE) system, the downlink uses Orthogonal Frequency Division Multiple Access (OFDMA) technology, and the uplink uses single-carrier-frequency division multiple access. Into (Single Carrier-Frequency Division Multiple Access, referred to as SC-FDMA) technology, but due to the general use of co-frequency networking, inter-cell interference (Inter-Cell Interference, referred to as ICI) has increased significantly. In order to reduce ICI, LTE adopts some anti-interference technologies, for example, Inter-Cell Interference Cancellation (ICIC) in the downlink. Downlink ICIC technology is based on the evolved Node B (evolved Node B, referred to as eNodeB) relative narrowband transmit power (Relative Narrowband TX Power, referred to as RNTP) restriction method to achieve the downlink interfe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/7136H04B7/12
CPCH04B1/7136H04L5/0012H04L5/0053
Inventor 关艳峰陈宪明罗薇袁弋非左志松
Owner ZTE CORP
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