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Uplink multi-user superposition transmission method and device

A data transmission and solution technology, applied in the field of downlink HARQ-ACK transmission, can solve problems affecting PHICH reception performance, PHICH resource conflicts, etc.

Inactive Publication Date: 2017-03-01
SHANGHAI LANGBO COMM TECH CO LTD
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  • Description
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Problems solved by technology

[0008] However, when the uplink MUST is used to transmit PUSCH, if the above method is still used to obtain PHICH resources, the starting positions of the uplink PUSCH resources scheduled by two (or more) UEs are likely to be the same. Using the same DMRS (Demodulation Reference Signal), the PHICH resources allocated by the base station will cause conflicts among these UEs, thereby affecting the receiving performance of the PHICH

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  • Uplink multi-user superposition transmission method and device

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Embodiment Construction

[0112] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined arbitrarily.

[0113] figure 1 It is a flow chart of base station configuration and user equipment processing in Embodiment 1 of the present invention. as attached figure 1 shown.

[0114] Step S101: The base station sends first information, which includes one or more of the following:

[0115] - Resource offset value: a value for indicating a resource offset.

[0116] - resource offset enabling indication: used to indicate whether the resource offset is used.

[0117] - resource offset index: used to indicate the index number corresponding to the value of the resource offset.

[0118] As an embodiment, the resource offset value is a positive integer, and is configured through dedicat...

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Abstract

The invention discloses an uplink multi-user superposition transmission method and device. In an embodiment, a base station sends a first message in a first step, wherein the first message comprises a resource deviation value and a resource deviation index; the base station receives uplink data transmission in a second step; and first HARQ-ACK feedback is sent on a given PHICH (Physical HARQ Indicator Channel) resource in a third step. A PHICH group serial number and a PHICH intra-group orthogonal sequence index of the given PHICH resource are respectively a PHICH group modified serial number and a PHICH intra-group modified orthogonal sequence index. Generation parameters of the PHICH group modified serial number and the PHICH intra-group modified orthogonal sequence index respectively comprise the first message. The first HARQ-ACK is used for indicating whether the uplink data is correctly received or not. The method and device disclosed by the invention avoid collision of PHICH resources occupied by two or more pieces of UE performing uplink MUST transmission, and thus correct reception of the PHICH is guaranteed.

Description

technical field [0001] The invention discloses a downlink HARQ-ACK transmission scheme in a wireless communication system, in particular to a downlink HARQ-ACK feedback transmission method and device using MUST (MUST, Multi User Superposition Transmission, multi-user superposition transmission). Background technique [0002] In the traditional 3GPP (3rd Generation Partner Project, third generation partnership project) cellular system, multi-user downlink wireless signals are transmitted through {TDM (Time Division Multiplexing, Time Division Multiplexing), FDM (Frequency Division Multiplexing, Frequency Division Multiplexing) , CDM (Code Division Multiplexing, Code Division Multiplexing)} in one or more ways to achieve. In 3GPP R (Release, version) 13, a new research topic (RP-150496) - downlink MUST is introduced, that is, downlink wireless signals of two users are distinguished by difference in transmission power. The two users usually include a near user (that is, close ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L1/18H04W72/04
CPCH04L1/1861H04L5/0055H04W72/21
Inventor 张晓博
Owner SHANGHAI LANGBO COMM TECH CO LTD
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