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Method and apparatus for data transmission

A data transmission method and data transmission technology, which are applied in the field of data transmission methods and devices, and can solve the problems of low frequency spectrum utilization in data transmission, etc.

Active Publication Date: 2012-10-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] The main purpose of the present invention is to provide a data transmission method and device to at least solve the problem of relatively low frequency spectrum utilization of data transmission in the scenario of multiple different system download wave aggregation in the above-mentioned related art

Method used

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  • Method and apparatus for data transmission
  • Method and apparatus for data transmission

Examples

Experimental program
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Embodiment 1

[0094] This embodiment provides a method for carrier aggregation, so that data can be effectively transmitted in a carrier aggregation scenario. The method includes: performing spectrum aggregation on frequency spectrums of a plurality of different systems, wherein the frequency spectrum aggregation is one of the following: aggregation of frequency spectrum corresponding to TDD system and frequency spectrum corresponding to FDD; aggregation of frequency spectrum of TDD system with different uplink and downlink configurations ; Spectrum aggregation of any two or more different systems in LTE system, HSUPA system, HSDPA system, HSPA+ system, WCDMA system, CDMA system, UMB, TD-SCDMA system, 16e / m / n, WIFI;

[0095] Preferably, the above spectrum may be one spectrum, or multiple continuous or discontinuous spectrums.

[0096] Preferably, the above-mentioned TDD system and FDD system are LTE systems or LTE-A systems.

[0097] Preferably, for the scheduling within the frequency spec...

Embodiment 2

[0113] This embodiment provides a spectrum aggregation method, and this embodiment combines the foregoing embodiments and preferred implementation manners therein.

[0114] Figure 4 It is an illustration of the timing relationship between PUSCH scheduling information, PUSCH, PUSCH ACK / NACK, and retransmitted PUSCH according to an embodiment of the present invention Figure 1 ,Such as Figure 4 As shown, for spectrum aggregation, it can be continuous FDD system spectrum and continuous TDD spectrum aggregation, can be discontinuous FDD system spectrum and continuous TDD spectrum aggregation, can be continuous FDD system spectrum and discontinuous TDD spectrum aggregation, It can be aggregated for discontinuous FDD system spectrum and discontinuous TDD spectrum.

[0115] For spectrum aggregation, discontinuous TDD spectrum aggregation with different uplink and downlink configurations, such as Figure 5 shown.

[0116] Figure 6 It is an illustration of the timing relationsh...

Embodiment 3

[0118] This embodiment provides a spectrum aggregation method, and this embodiment combines the foregoing embodiments and preferred implementation manners therein.

[0119] In this embodiment, it is assumed that two FDD system spectrums (CC1) for uplink and downlink and one frequency spectrum (CC2) for TDD system are aggregated; the TDD system adopts uplink and downlink configuration 1; Scheduling, transmission according to the timing relationship of the system corresponding to the frequency spectrum.

[0120] Figure 7 It is a schematic diagram of the timing relationship of data transmission according to the embodiment of the present invention Figure 1 ,Such as Figure 7 As shown, the specific timing relationship is as follows:

[0121] When the UE detects the PDCCH channel carrying the scheduling information of the PDSCH on the spectrum b corresponding to the subframe n on the spectrum b corresponding to the UE, the UE receives the PDSCH at the position indicated by the ...

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Abstract

The invention discloses a method and an apparatus for data transmission. The method comprises: performing frequency spectrum aggregation of a plurality of first frequency spectrums corresponding to a plurality of systems; and carrying out data transmission on a second frequency spectrum formed by aggregation of the plurality of first frequency spectrums. Through the method and the apparatus in the invention, the frequency spectrum aggregation of the plurality of systems is realized and a frequency spectrum utilization rate of a communication system 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] There are two frame structures in the Long Term Evolution (LTE for short) system, and the frame structure type 1 is applicable to Frequency Division Duplex (FDD for short) and Frequency Division Half Duplex. Each wireless frame is 10ms long and consists of 20 time slots (slot), each time slot is 0.5ms, numbered from 0 to 19. figure 1 It is a schematic diagram of the frame structure of the FDD mode according to the related technology, such as figure 1 As shown, a subframe (subframe) is composed of two consecutive time slots, for example, subframe i is composed of two consecutive time slots 2i and 2i+1. Whether it is half-duplex FDD or full-duplex FDD, the uplink and downlink are transmitted on different frequencies, but for half-duplex FDD, the UE cannot send and receive data at the same time; for full-duplex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W72/12H04L1/16
CPCH04W72/0453H04L5/0037H04L5/0055H04L5/14
Inventor 戴博夏树强郝鹏黄亚达艾建勋胡留军
Owner ZTE CORP
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