Data transmission method and device

A data transmission method and data transmission technology are applied in the field of data transmission methods and devices, and can solve the problems of low frequency diversity gain and the like

Active Publication Date: 2019-01-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] Aiming at the problem that the frequency diversity gain of the data transmission method in the related art is relatively low, 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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Embodiment 1

[0140] This preferred embodiment provides a frequency hopping method, which can reduce frequency diversity gain loss.

[0141] The method in this preferred embodiment includes the following steps S202 to S206.

[0142] Step S202: According to the inter-subband frequency hopping f hop The value of and the image hopping frequency f m The value of , to obtain the inter-subband hopping frequency f hop and mirror frequency hopping f m Various combinations of values ​​are taken and expressed as a set S, as shown in Table 1 below.

[0143] Table 1

[0144]

[0145] Among them, the inter-subband hopping frequency f hop The range of values ​​is {0,1,…,N sb -1}, mirror frequency hopping f m The range of values ​​is {0,1}, N sb Indicates the number of subbands within the frequency hopping bandwidth, N hop,m Indicates the inter-subband hopping frequency f hop and mirror frequency hopping f m The number of combinations of values, that is, the size of the set S (equivalent to ...

Embodiment 2

[0177] This preferred embodiment provides a frequency hopping method. In this preferred embodiment, the frequency hopping period P hop is the time length n of a wireless frame f , the output time index number N i is 20, the number of subbands corresponding to the frequency hopping bandwidth N sb is 4, the cell identifier is 1 and the pseudo-random sequence interception granularity K2 is 10, namely

[0178] P hop =n f , n s =0,1,…,19,N i =20, N sb =4, K2=10,

[0179] Among them, a wireless frame n f Consists of 20 time slots, n s Indicates that in a frequency hopping period P hop The slot index within .

[0180] The method of this preferred embodiment comprises the steps:

[0181] Step S302: According to the inter-subband frequency hopping f hop The value of and the image hopping frequency f m The value of , to obtain the inter-subband hopping frequency f hop and mirror frequency hopping f m Various combinations of values ​​are taken and expressed as a set S...

Embodiment 3

[0247] This preferred embodiment provides a frequency hopping method. In this preferred embodiment, the frequency hopping period P hop is the time length n of a wireless frame f , the output time index number N i is 10, the number of subbands corresponding to the frequency hopping bandwidth N sb 3, the cell identifier is 37 and the pseudo-random sequence interception granularity K2 is 10, namely

[0248] P hop =n f , n s =0,1,…,19,N i =10,N sb =3, K2=10,

[0249] Among them, a wireless frame n f Consists of 20 time slots, n s Indicates that in a frequency hopping period P hop The slot index within .

[0250] The method of this preferred embodiment comprises the steps:

[0251] Step S402: According to the inter-subband frequency hopping f hop The value of and the image hopping frequency f m The value of , to obtain the inter-subband hopping frequency f hop and mirror frequency hopping f m Various combinations of values ​​are taken and expressed as a set S, a...

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Abstract

The invention discloses a data transmission method and device. The method includes the steps that a set S formed by different combinations of frequency hopping fhop values between sub-bands and mirror image frequency hopping fm values is acquired, wherein Nhop, and Nm represent the magnitude of the set S; according to cellular identifiers, the combination of the fhop values and the fm values corresponding to the output time index i is determined, wherein i is an integer from 0 to Ni-1, and Ni represents the output time index number and is contained in the set S; according to the physical resource block position nPRB(i) of transmitted data at the output time with the index being i, data are transmitted on time-frequency resources corresponding to the physical resource block position nPRB(i). With the method and device, frequency diversity gain of data 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] In the Frequency Division Duplex (FDD) system of the 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP for short) long term evolution (Long Term Evolution, LTE for short) plan, a radio frame includes 10 A subframe takes up 1ms and is divided into two slots. A resource block (Resource Block, RB for short) occupies a duration of one time slot in the time domain. Due to the existence of frequency division multiplexing, many resource blocks can be divided according to the different frequency bands within the duration of a time slot. index n VRB is 0,1,…, one of them is the number of resource blocks corresponding to the uplink system bandwidth. [0003] For the Physical Uplink Shared Channel (PUSCH for short), two types of uplink frequency hopping (Hopping) are defined, specifical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04L1/00
Inventor 陈宪明关艳峰罗薇左志松
Owner ZTE CORP
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