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Method for feedback UCI in enhanced carrier aggregation system

A carrier aggregation and carrier technology, applied in the field of UCI feedback, can solve the problem of UCI feedback shortage, which cannot be solved, and it is difficult to carry UCI.

Active Publication Date: 2016-10-05
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to support up to 32 carriers, if the PUCCH is still only located on the primary cell, it is difficult for existing solutions to carry a sharply increased UCI on one carrier
In dual connectivity Rel-12, dual PUCCHs for MCG and SCG are supported, however, even if dual PUCCHs are supported in carrier aggregation enhancement, the UCI feedback shortage problem cannot be solved

Method used

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  • Method for feedback UCI in enhanced carrier aggregation system
  • Method for feedback UCI in enhanced carrier aggregation system

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Embodiment Construction

[0024] In the following detailed description of the preferred embodiment, reference is made to the accompanying drawings which form a part hereof. The accompanying drawings show, by way of example, specific embodiments in which the invention can be practiced. The illustrated embodiments are not intended to be exhaustive of all embodiments in accordance with the invention. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. Accordingly, the following detailed description is not limiting, and the scope of the invention is defined by the appended claims. In addition, while the specification describes steps of a method in a particular order, this does not require or imply that operations must be performed in that particular order, or that all illustrated operations must be performed to achieve desirable results. Rather, the depicted Steps can change the order of exe...

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Abstract

The present invention provides a method for feedback UCI in an enhanced carrier aggregation system. The method of a user terminal comprises the following steps: obtaining carrier grouping information from a base station to determine multiple carrier groups; and using PUCCE and / or PUSCH channels on a special carrier in the carrier groups to transmit the UCI of each carrier in the carrier groups. The method of the base terminal comprises the following steps: enforcing grouping of multiple carriers requiring to be grouped to obtain multiple carrier groups and generate corresponding carrier grouping information; assigning a special carrier for each carrier group, and generating special carrier information; and sending the carrier grouping information and the special carrier information to the user terminal. The present invention further provides another method for feedback UCI in an enhanced carrier aggregation system.

Description

technical field [0001] The present invention relates to the field of wireless communication, and in particular, the present invention relates to a method for feeding back UCI in an enhanced carrier aggregation system. Background technique [0002] A new work item for enhanced carrier aggregation over 5 carriers was approved in RAN#66 meeting. Currently, there is a lot of interest in expanding LTE by occupying unlicensed spectrum in the 5Gz band. Apart from the 5GHz frequency band which is widely used in LTE, on other frequency bands, such as 3.5GHz, allocation enables more than 1 carrier on one frequency band. Also, RAN4 is progressing well recently, with the specification of carrier aggregation requirements (especially in the downlink direction) with multiple 3-DL carrier aggregation work items being completed, and the configuration of multiple 4-DL carrier aggregation being discussed. As noted above, the extension of carrier aggregation beyond 5 carriers provides an oppo...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L5/00
Inventor 孙芳蕾
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD