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Combined feedback method and device, base station and user equipment

A technology of user equipment and feedback device, which is applied in the field of combined feedback, and can solve problems such as being unable to determine PHICH resources and receiving feedback information correctly

Active Publication Date: 2017-12-15
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0008] In the prior art, when the base station performs combined feedback on the HARQ feedback corresponding to multiple PUSCH subframes in the same PHICH subframe, the HARQ feedback of different PUSCH subframes may correspond to the same PHICH resource at the same time, causing the user equipment to fail. Determine the PHICH resource corresponding to each PUSCH subframe in the PHICH subframe, and the feedback information cannot be received correctly

Method used

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  • Combined feedback method and device, base station and user equipment
  • Combined feedback method and device, base station and user equipment
  • Combined feedback method and device, base station and user equipment

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Embodiment Construction

[0045] As mentioned in the background technology, due to the listen-before-talk mechanism, when the base station cannot obtain the right to use unlicensed spectrum resources at the preset PHICH subframe time corresponding to the PUSCH subframe, it has to delay one or several subframes and When a PHICH subframe sends combined feedback for multiple PUSCH subframes, it is possible that the HARQ feedback of different PUSCH subframes corresponds to the same PHICH resource at the same time, and the user equipment will not be able to determine that each PUSCH subframe corresponds to the PHICH subframe. The PHICH resource cannot receive the feedback information correctly.

[0046] The inventors of the present invention have found through research that the key to the above problem is that in the existing combined feedback technology, it is possible to calculate the same PHICH group ID and intra-group ID according to different PUSCH subframes, because the PHICH group ID and intra-group I...

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Abstract

The invention relates to a combined feedback method and device, a base station and user equipment. The method comprises the following steps of informing all user equipment waiting for receiving feedback of an offset table, wherein the offset table is used for indicating a correspondence between different PUSCH sub-frames and offsets in calculation of PHICH resources; for all to-be-fed back PUSCH sub-frames, calculating, according to the offset corresponding to each PUSCH sub-frame, the PHICH resource used in feedback of HARQ for each PUSCH sub-frame in the PHICH sub-frame; and sending the PHICH in the PHICH sub-frame to all user equipment waiting for receiving feedback. Through adoption of the combined feedback method and device, the base station and the user equipment, the user equipment can determine the PHICH resource used in feedback of HARQs of different PUSCH sub-frames in the combined feedback in the same PHICH sub-frame, so as to acquire information correctly.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a method, device, base station and user equipment for combined feedback. Background technique [0002] The Long Term Evolution (LTE) system is a technical standard for the Universal Mobile Telecommunications System (UMTS) developed by the 3rd Generation Partnership Project (3GPP). The project was formally established and launched at the Toronto meeting. The LTE system introduces key technologies such as Orthogonal Frequency Division Multiplexing (OFDM) and Multiple Input Multiple Output (Multi-Input&Multi-Output, MIMO), which significantly increases spectrum efficiency and data transmission rate, and supports multiple bandwidths Allocation: 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, and 20MHz, etc., and supports global mainstream 2G / 3G frequency bands and some new frequency bands, so the spectrum allocation is more flexible, and the system capacity and coverage are also signif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00
CPCH04L5/0055
Inventor 韩传华邓云
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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