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LTE system CQI reporting implementation method

An implementation method and technology related to it, applied in the field of CQI report implementation in LTE system, capable of solving problems such as unfavorable implementation

Active Publication Date: 2009-10-28
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

[0016] In order to solve the problem that there are many combinations of CQIs formed by different coding rates and modulation methods, and a large number of simulations give each mapping relationship, which is not conducive to the realization of the problem, the present invention provides a CQI reporting implementation method for the LTE system

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  • LTE system CQI reporting implementation method
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  • LTE system CQI reporting implementation method

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Embodiment Construction

[0043] In order to make the purpose, technical solution and advantages of the present invention clearer, a method for implementing CQI reporting in an LTE system of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0044] Due to the limited space, it is impossible to list all the situations in the 3GPP protocol 36.213. The following embodiments use the channel bandwidth and the number of physical resource blocks N PRB The configuration relationship is as follows:

[0045] Table 4

[0046] Channel Bandwidth (Mhz)

1.4

3

5

10

15

20

N PRB

6

15

25

50

75

100

[0047] Above N PRB with I TBS The corresponding relationship is shown in the table below:

[004...

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Abstract

The invention relates to a wireless communication technical field, especially a LTE system CQI reporting implementation method. The invention provides a LTE system CQI reporting implementation method, capable of determining the coincidence relation between CQI sequence and I[TBS] and simulating and establishing the mapping relation between SINR and CQI. The invention provides a CQI reporting implementation method in LTE system multimode, capable of reporting the CQI sequence in multimode, wherein the mapping relation between SINR and CQI in one mode is used as the basis, based on the gradient, intercept relations between various transmission modes and the CQI sequences in other transmission modes are obtained by the fitting equation based on the mapping relation between the SINR and CQI sequence. The implementation method effectively solves the problem that many CQI combinations are formed by different cording rate and modulation mode and a large amount of emulations have a large amount of corresponding mapping relations, adverse to implement. The implementation method has simple implementation method and greatly saves the storage space.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for realizing CQI reporting in an LTE (Long Term Evolution) system. Background technique [0002] In order to meet people's increasing demand for data services, the 3rd Generation Partnership Project (The 3rdgeneration Partnership Project, referred to as 3GPP) launched the 3GPP "Long Term Evolution Project", referred to as the 3GPP LTE project, which aims to pass the ever-evolving 3G system , provide stronger data service support, and provide users with better services. [0003] The key technologies of TD-HSDPA (TD-SCDMA system supporting high-speed downlink packet access (HSDPA)) and LTE system include scheduling and adaptive modulation and coding technology. Scheduling means that the system dynamically allocates the most suitable time-frequency resources to a certain user according to the feedback of the current channel quality, the amount of data to be...

Claims

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Application Information

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IPC IPC(8): H04W28/04H04L1/00
Inventor 陈茜茜沈静王茜竹申敏
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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