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Feedback method for terminal capability indicating parameters, feedback processing method for terminal capability indicating parameters, and feedback processing apparatus for terminal capability indicating parameters

A terminal capability and terminal technology, applied in the field of communication, can solve problems such as power waste, different transmission technologies, and too ideal linear adjustment method, and achieve the effect of avoiding power waste and accurate modulation and coding methods

Active Publication Date: 2016-02-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] In the second case, the transmission technology assumed in CQI calculation is different from the transmission technology used in actual data transmission.
[0042] Therefore, one of the biggest technical defects in the existing technology is that the linear adjustment method assumed by the base station after obtaining the Post-SINR based on the CQI reported by the UE is too ideal, and this method may cause several serious problems:
Therefore, there will also be problems of power waste or inaccurate modulation and coding methods
[0053] At present, there is no effective solution for the above-mentioned technical problems in related technologies

Method used

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  • Feedback method for terminal capability indicating parameters, feedback processing method for terminal capability indicating parameters, and feedback processing apparatus for terminal capability indicating parameters
  • Feedback method for terminal capability indicating parameters, feedback processing method for terminal capability indicating parameters, and feedback processing apparatus for terminal capability indicating parameters
  • Feedback method for terminal capability indicating parameters, feedback processing method for terminal capability indicating parameters, and feedback processing apparatus for terminal capability indicating parameters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0129] Embodiment 1 (uplink):

[0130] The terminal and the base station pre-agreed on the amount of distortion noise that will be generated due to the unsatisfactory transmission link of the terminal, such as EVM, and the terminal and the UE pre-agreed on four levels of EVM, as shown in Table 4

[0131] Table 4

[0132] Level1

EVM=0.2

Level2

EVM=0.1

Level3

EVM=0.05

Level4

EVM=0.01

[0133] The terminal feeds back the capabilities it can achieve to the base station. For example, terminal A is a UE with poor hardware performance, and can feed back Level 1 to the base station. Terminal B is a UE with better hardware performance, and can feed back Level3 to the base station.

[0134] Each UE may use 2-bit signaling to represent the Level information.

[0135] After receiving the capability level information of UE, the base station obtains the EVM of UEA as 0.2

[0136] After receiving the capability level information of the...

Embodiment 2

[0148] Embodiment 2 (downstream):

[0149] The terminal and the base station pre-agreed on the amount of distortion noise that will be generated due to the unsatisfactory receiving link of the terminal, such as EVM, and the terminal and the UE pre-agreed on four levels of EVM, as shown in Table 5

[0150] table 5

[0151] Level1

EVM=0.2

Level2

EVM=0.1

Level3

EVM = 0.05

Level4

EVM=0.01

[0152] The terminal feeds back its achievable capabilities to the base station. For example, terminal C is a UE with poor hardware performance, and can feed back Level 2 to the base station. Terminal D is a UE with better hardware performance, and can feed back Level4 to the base station.

[0153] Each UE may use 2-bit signaling to represent the Level information.

[0154] After the base station receives the capability level information of the UE, the EVM of the UEC is obtained as 0.1. After calculation, the base station can estimate that ...

Embodiment 3

[0165] Embodiment 3 (uplink):

[0166] The terminal and the base station pre-agreed on the SINR limit caused by the distortion noise generated by the terminal's unsatisfactory transmission link, and the terminal and the UE pre-agreed on two levels of the maximum SINR, as shown in Table 7

[0167] Table 7

[0168] Level1

Max SINR=20dB

Level2

Max SINR=40dB

[0169] The terminal feeds back the capabilities it can achieve to the base station. For example, terminal A is a UE with poor hardware performance, and can feed back Level 1 to the base station. Terminal B is a UE with better hardware performance, and can feed back Level 2 to the base station.

[0170] Each UE may use 2-bit signaling to represent the Level information.

[0171] After receiving the maximum SINR capability level information of the UEA, the base station may indirectly consider that the transmit EVM of the UEA is 0.1.

[0172] After the base station receives the maximum SINR ca...

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Abstract

The present invention provides a feedback method for terminal capability indicating parameters, a feedback processing method for the terminal capability indicating parameters, and a feedback processing apparatus for the terminal capability indicating parameters. The feedback method includes the steps as follows: a terminal acquires performance parameters of a transmitting link or a receiving link, wherein, the performance parameters are used for indicating the terminal capability; the terminal transmits the performance parameters to a base station. The technical scheme provided by the invention solves the problem that a hypothetical linearity adjustment method may have problems of waste power, inaccurate modulating coding method and the like after the base station acquires Post-SINR according to CQI reported by UE in the correlation technique, so that the waste power of the base station can be avoided and the modulation coding method is more accurate.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a feedback processing method and device for terminal capability indication parameters. Background technique [0002] In the Long Term Evolution system (LTE: Long Term Evolution), the frequency division duplex (FDD: Frequency Division Duplex) system reflects the information (CSI: Channel State Information) of the downlink physical channel state mainly including three parts: channel quality indication (CQI: Channels quality indication), forecast Coding matrix indicator (PMI: Pre-codingMatrixIndicator), rank indicator (RI: RankIndicator). Time Division Duplexing (TDD: TimeDivisionDuplexing), the information CSI reflecting the state of the downlink physical channel in the system mainly includes CQI. [0003] The CQI is an important information that needs to be reported when both the FDD system and the TDD system perform CSI feedback, and can be fed back on the uplink physical c...

Claims

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Application Information

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IPC IPC(8): H04W8/24H04W52/14H04W52/24H04W72/04
CPCH04W8/24
Inventor 陈艺戬李儒岳鲁照华赵晶肖华华
Owner ZTE CORP