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Data transmission method and data transmission device

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

Inactive Publication Date: 2014-01-29
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 data transmission device
  • Data transmission method and data transmission device

Examples

Experimental program
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Embodiment 1

[0081] This preferred embodiment provides an enhanced uplink resource frequency hopping manner, which can obtain more frequency diversity gains without increasing control overhead.

[0082] In this preferred embodiment, the sending end 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 frequency hopping through the following parameters: cell ID and frame number. better, c init = N ID cell + mod ( n f , 10 ) .

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

[0084] f hop ( i ) = ...

Embodiment 2

[0095] This preferred embodiment provides a data transmission method, Figure 5 is a schematic diagram of enhanced type 2 inter-subframe resource frequency hopping according to an embodiment of the present invention, as shown in Figure 5 As shown, subframe 0 and subframe 8 are resource positions occupied by initial data transmission and retransmission, and subframe 2 and subframe 10 are resource positions occupied by data initial transmission and retransmission.

[0096] In this preferred embodiment, data transmission can be performed according to the following formula:

[0097] Physical resource block offset index:

[0098] n ~ PRB ( n s ) ( n ~ VRB + f hop ( ...

Embodiment 3

[0120] This preferred embodiment provides a data transmission method, Figure 6 It is a schematic diagram of enhanced type 2 resource frequency hopping between subframes and within subframes according to an embodiment of the present invention, as shown in Figure 6 As shown, subframe 0 and subframe 8 are resource positions occupied by initial data transmission and retransmission, and subframe 2 and subframe 10 are resource positions occupied by data initial transmission and retransmission.

[0121] In this preferred embodiment, data transmission can be performed according to the following formula:

[0122] Physical resource block offset index:

[0123] n ~ PRB ( n s ) ( n ~ VRB + f hop ...

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Abstract

The invention discloses a data transmission method and a data transmission device. The method includes determining a frequency domain position of a physical resource block in a time slot used for sending data by means of frequency hopping, wherein a random sequence of the frequency hopping mode is initialized through a cell identity and a frame number; transmitting the data on time frequency resources corresponding to the determined frequency domain position of the physical resource block. By the data transmission method and the data transmission device, covering range of data transmission is expanded.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a data transmission method and device. Background technique [0002] 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 is used for the uplink. Single Carrier-Frequency Division Multiple Access (Single Carrier-Frequency Division Multiple Access, referred to as SC-FDMA) technology, but due to the general use of the same frequency network, inter-cell interference (Inter-CellInterference, referred to as ICI) increases significantly. In order to reduce the ICI, LTE adopts some anti-interference technologies, for example, downlink inter-cell interference cancellation (Inter-Cell Interference Cancellation, ICIC for short). The downlink ICIC technology is based on the relative narrowband transmit power (Relative Narrowband TX Power, ...

Claims

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Application Information

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