Multi-carrier feedback information sending system and method

A technology of feedback information and sending system, which is applied in the field of sending system of multi-carrier feedback information under large bandwidth, and can solve problems such as inability to set feedback requirements and unbalanced feedback information

Active Publication Date: 2010-11-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current existing technologies all directly adopt the mapping relationship given by the LTE system in the current time division duplex (TDD) mode. However, there are problems in directly adopting the mapping relationship set by the system, such as unbalanced feedback information on different channels. etc. In addition, there is room for further improvement in the modulation symbols corresponding to different feedback information on the same channel
In short, the problem existing in the existing technology is: directly using the mapping relationship given by the system, it is impossible to set and adjust the mapping relationship between the above three according to the actual feedback needs, so as to meet the needs of improving feedback performance
Currently, there is no effective solution to this problem

Method used

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  • Multi-carrier feedback information sending system and method

Examples

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example 1

[0098] Example 1 is the case of M=2, and the mapping relationship among feedback information, channel selection and modulation symbols of different downlink component carriers is shown in Table 1. In the following, the UE on the sending side selects an appropriate PUCCH channel and modulation symbol to send feedback information according to the mapping relationship, and the base station on the receiving side detects the actual feedback information according to the PUCCH channel and modulation symbol where the feedback information is located, including the following Several situations:

[0099] a1. The UE sends feedback information according to the mapping relationship. Specifically: when the feedback information of the two downlink component carriers is ACK and ACK respectively, according to the current mapping relationship, the second channel index corresponding to the channel selection On the corresponding PUCCH, the modulation symbol (1, 1) on the current PUCCH is used to ...

example 2

[0107] Example 2 is the case of M=3, and the mapping relationship among feedback information, channel selection and modulation symbols of different downlink component carriers is shown in Table 2. In the following, the UE on the sending side selects an appropriate PUCCH channel and modulation symbol to send feedback information according to the mapping relationship, and the base station on the receiving side detects the actual feedback information according to the PUCCH channel and modulation symbol where the feedback information is located, including the following Several situations:

[0108] b1. The UE sends feedback information according to the mapping relationship: when the feedback information of the three downlink component carriers is ACK, ACK and ACK respectively, according to the current mapping relationship, the third channel index corresponding to the channel selection On the corresponding PUCCH, the modulation symbol (1, 1) on the current PUCCH is used to send ACK...

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Abstract

The invention discloses a multi-carrier feedback information sending system, which comprises a setting unit, a sending unit and a selecting channel, wherein the setting unit is used for setting mapping relationship among feedback information, channel selection and modulation symbols according to feedback requirements on downlink component carriers; the sending unit is used for obtaining the mapping relationship from the setting unit; and the selecting channel sends the feedback information according to the mapping relationship by adopting the modulation symbols corresponding to the channel selection and the feedback information. The invention also discloses a multi-carrier feedback information sending method, which comprises the following steps: setting the mapping relationship among the feedback information, the channel selection and the modulation symbols according to the feedback requirements on the downlink component carriers; selecting the channel by a sending side and sending the feedback information according to the mapping relationship by adopting the modulation symbols corresponding to the channel selection and the feedback information. By adopting the system and the method, the adopted and set mapping relationship can be regulated according to actual feedback requirements, thus improving the feedback performance of the feedback information under a plurality of the component carriers.

Description

technical field [0001] The invention relates to the field of digital communication, in particular to a system and method for sending multi-carrier feedback information under large bandwidth. Background technique [0002] In the Advanced International Mobile Communications (IMT-Advanced, International Mobile Telecommunications-Advanced) system, it can realize high-speed data transmission and has a large system capacity. In the case of low-speed mobile or hotspot coverage, the peak rate of the IMT-Advanced system It can reach 1Gbit / s; in the case of high-speed mobile or wide-area coverage, the peak rate of the IMT-Advanced system can reach 100Mbit / s. [0003] In order to meet the requirements of the International Telecommunication Union-Advanced (ITU-Advanced, International Telecommunication Union-Advanced), the Long Term Evolution Advanced (LTE-A, Long Term Evolution Advanced) system, which is an evolution standard for the Long Term Evolution (LTE, Long Term Evolution), needs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04L1/18H04L1/00H04L5/02
Inventor 米德忠夏树强梁春丽左志松
Owner ZTE CORP
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