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Hot-cell coverage data transmission method, device and base station

A data transmission method and technology of a data transmission device, which are applied in the field of mobile communication, can solve the problems that the system transmission rate cannot meet the actual demand, etc., and achieve the effects of improving the system throughput and optimizing the modulation mode.

Inactive Publication Date: 2012-09-19
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a data transmission method, device and base station covered by a hotspot cell, which can support up to 256QAM in an optimized modulation mode, improve system throughput, and solve the problem that the system transmission rate in the coverage of a hotspot cell cannot meet the actual demand.

Method used

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  • Hot-cell coverage data transmission method, device and base station

Examples

Experimental program
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Effect test

Embodiment 1

[0538] figure 2 Is the embodiment of the present invention in I TBS The value ranges from 23-26 when the corresponding modulation mode satisfies 256QAM, I TBS The series is the same as the existing standard TBS table, when 1≤N PRB When ≤110, determine the transmission value of the TBS of the first layer.

[0539] For example, when I TBS =23,N PRB = Determination of 1st floor TBS at 5, by searching 1st floor I TBS =23,N PRB =5, it can be seen from the table that the TBS of one layer is equal to 4008 bits.

[0540]

Embodiment 2

[0542] image 3 Is the embodiment of the present invention in I TBS The value ranges from 21-26 when the corresponding modulation method satisfies 256QAM, I TBS The series is the same as the existing standard TBS table, when 1≤N PRB When ≤110, determine the transmission value of the TBS of the first layer.

[0543] For example, when I TBS =26,N PRB When = 101, the determination of the TBS of the 1st floor is determined by searching the 1st floor I TBS =26,N PRB =101, it can be seen from the table that the TBS of one layer is equal to 101840bit.

[0544]

Embodiment 3

[0546] Figure 4 Is the embodiment of the present invention in I TBS The value ranges from 27-30 and the corresponding modulation mode satisfies the condition of 256QAM, I TBS The number of series is 4 more than the existing standard TBS table, when 1≤N PRB When ≤110, determine the transmission value of the TBS of the first layer.

[0547] For example, when I TBS =28,N PRB When = 41, the determination of the TBS of the 1st floor is determined by searching the 1st floor I TBS =28,N PRB =41, look up the table and know that the TBS of one layer is equal to 36696bit.

[0548]

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Abstract

The invention provides a hot-cell coverage data transmission method. The method comprises the following steps: step a, a base station regulates an MCS (Modulation and Coding Scheme) table to ensure that the MCS satisfies the modulation mode of 256 QAM and to obtain the TBS (Transport Block Size) in a first layer; and step b, the base station determines the TBS of the current data transmission according to the NPRB (Index Transport Block Size), the ITBS (Index Transport Block Size) and the number of mapping layers of the current TB (Transport Block), and performs data transmission according to the TBS. The invention further provides a data transmission device and a base station. When the hot-cell coverage data transmission method, the device and the station, provided by the invention, are adopted, the modulation mode can be optimized to be capable of supporting 256 QAM at most, the system throughput is improved, and the problem that the system transmission rate can not satisfy actual demands in hot cell coverage can be solved.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a data transmission method, device and base station covered by a hotspot cell. Background technique [0002] The Long Term Evolution Advanced (LTE-A) system, as an evolution standard of the Long Term Evolution (LTE) system, proposes an enhanced Multiple Input Multiple Output (MIMO) technology, which can Supports up to 8×8 downlink antenna configuration to improve cell edge coverage and throughput. [0003] LTE-A requires that 4G communication not only meet the high peak rate and large bandwidth, but also ensure the experience of users in various areas. Statistics show that 80%-90% of the system throughput will occur in indoor and hotspot nomadic scenarios. Indoor, high-speed , hotspots will become a more important application scenario of the mobile Internet. [0004] In wireless communication, a transmitting end uses multiple antennas and adopts a spatial multiplexing method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00
CPCH04W28/16H04W28/18H04L1/0016H04W72/04H04L1/00
Inventor 张帅许进徐俊
Owner ZTE CORP
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