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Data transmission method and equipment

A data transmission method and data transmission technology, applied in the field of data transmission methods and equipment, can solve the problem that the data transmission method cannot be applied to both ends of data transmission, and achieve the effect of ensuring data transmission efficiency

Active Publication Date: 2012-10-17
新奇点智能科技集团有限公司 +2
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Problems solved by technology

Therefore, the data transmission method based on the maximum number of HARQ processes of the prior art is 8 cannot be applied to the large coverage situation where the distance between the two ends of the data transmission is greater than the distance threshold of the prior art. A data transmission scheme where the distance between terminals is greater than the distance threshold of the prior art

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] In the LTE system, whether the UE is performing service access or the UE is in the uplink and downlink services, due to the time-varying characteristics of the wireless channel and the impact of multipath fading signal transmission, as well as some unpredictable interference, the signal transmission Failed, currently the continuity and correctness of the uplink and downlink services is ensured through the HARQ mechanism. This error-correctable link adaptation mechanism is limited by the processing time of the UE, the processing time of the eNB and the time RTT of the round-trip transmission of wireless signals in the wireless air environment. The RTT is limited by the network coverage, that is, the size of the cell radius.

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Abstract

The invention discloses a data transmission method and data transmission equipment. The method comprises the following steps that: when distance between the data transmission equipment and an opposite end of the data transmission equipment is greater than a distance threshold value, the data transmission equipment acquires the maximum process number of a hybrid automatic repeat request which is employed for data transmission, wherein the maximum process number of the hybrid automatic repeat request is obtained according to the data processing time delay of the data transmission equipment, the data processing time delay of the opposite end of the data transmission equipment and the distance between the data transmission equipment and the opposite end of the data transmission equipment; and the data transmission equipment transmits data to the opposite end of the data transmission equipment according to the maximum process number of the hybrid automatic repeat request. The technical scheme provided by the invention is applicable to a large-coverage scene of which cell radius is more than 100 km, and can effectively ensure data transmission efficiency under the condition of large coverage.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of mobile communications, and in particular, to a data transmission method and device. Background technique [0002] In the cellular mobile communication system, the current mobile communication technology has combined the long-term evolution of Orthogonal Frequency Division Multiplexing (OFDM) and Multiple-Input Multiple-Out-put (MIMO) ( Long Term Evolution; LTE) key technologies. LTE R8 technology can achieve user throughput, spectrum efficiency and mobility to meet the international standard requirements of the 3rd Generation Partnership Project (3rd Generation Partnership Project; 3GPP), that is, the instantaneous peak rate of 20M bandwidth can meet 100Mbit / s (spectrum Efficiency 5bit / s / Hz), 50MHz instantaneous uplink peak rate (peak spectral efficiency 2.5bit / s / Hz) design goals. These mobile communication requirements require that the coverage radius (the coverage radius is t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
Inventor 方晓波佟国旭吴群英汝聪翀柳敦
Owner 新奇点智能科技集团有限公司
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