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Configuration method of EPHICH (enhanced physical hybrid automatic repeat request indicator channel)

A technology of hybrid automatic retransmission and physical enhancement, which is applied in the transmission system, digital transmission system, error prevention/detection using the return channel, etc. It can solve the problem that there is no control channel area and PHICH cannot directly apply the new carrier type of LTE-A system , UE cannot demodulate the channel, etc.

Active Publication Date: 2014-12-31
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Obviously, from the above, PHICH cannot be directly applied to the new carrier type of LTE-A system
The reasons are: 1. There is only sparse CRS signal, and the UE cannot demodulate the channel; 2. There is no dedicated control channel area, and the UE cannot directly know the resource allocation of the channel.

Method used

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  • Configuration method of EPHICH (enhanced physical hybrid automatic repeat request indicator channel)
  • Configuration method of EPHICH (enhanced physical hybrid automatic repeat request indicator channel)
  • Configuration method of EPHICH (enhanced physical hybrid automatic repeat request indicator channel)

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Embodiment Construction

[0036] 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.

[0037] Firstly, the new carrier of the LTE-A system may be a standalone (standalone) carrier or a non-standalone carrier. The difference between the two is that a standalone carrier can be used as an independent primary cell (PCell) or as a secondary cell (SCell) attached to a primary cell; a non-standalone carri...

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Abstract

Disclosed is a configuration method of EPHICH (enhanced physical hybrid automatic repeat request indicator channel) used for user equipment in LTE-A (long term evolution-advanced) wireless communication system. The user equipment belongs to an EPHICH group. The configuration method includes the steps that the user equipment receives first information sent from a base station, to be specific, the first information includes information indicating the user equipment about EPHICH configuration; according to the first information, the user equipment receives an HARQ (hybrid automatic repeat request) feedback on the EPHICH.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to the technical field of LTE-A. Background technique [0002] In recent years, the 3GPP organization is conducting discussions on the next-generation wireless communication technology standard LTE-A, and one of the important issues is the introduction of a new carrier type (new carrier type, NCT for short). One of the main purposes of introducing this new carrier is to improve spectrum efficiency. For this reason, unlike traditional LTE carriers, the traditional control channel region (ie, the first 1-4 symbol regions) will no longer be used in the design of this new carrier That is to say, in the new carrier type, various control channels will use the physical downlink shared channel (physical downlink shared channel PDSCH for short) area of ​​the traditional LTE carrier. In addition, in the new carrier type, dense cell specific reference signals (CRS for s...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L1/00
Inventor 邓云佘锋
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD