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Method and apparatus for determining HARQ timing in communication systems

A communication system and timing technology, applied in transmission systems, wireless communication, digital transmission systems, etc., can solve problems such as the absence of HARQ feedback timing solutions, achieve high peak rates, and minimize feedback delays.

Active Publication Date: 2015-10-28
日本电气珠式会社
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] However, in the prior art, there is no solution for defining HARQ feedback timing for communication systems supporting CA for FDD and TDD

Method used

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  • Method and apparatus for determining HARQ timing in communication systems
  • Method and apparatus for determining HARQ timing in communication systems
  • Method and apparatus for determining HARQ timing in communication systems

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Embodiment Construction

[0054] Hereinafter, the principle and spirit of the present invention will be described with reference to the illustrative embodiments. It should be understood that all these embodiments are given only to enable those skilled in the art to better understand and further practice the present invention, but not to limit the scope of the present invention. For example, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. In the interest of clarity, not all features of an actual implementation are described in this specification. It should of course be understood that in the development of any such actual embodiment, many implementation-specific decisions should be made to achieve the developer's specific goals, such as compliance with system-related and business-related constraints, which will vary from implementation to implementation. Furthermore, it should be appreciated that such a development eff...

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Abstract

Methods and apparatuses for determining HARQ timing in a communication system supporting Carrier Aggregation (CA) are provided. A method for receiving, at a BS, a HARQ feedback from a UE in a communication system supporting CA of a Pcell and at least one Scell is provided. The Pcell and Scell support either FDD or TDD. The method comprises: transmitting a downlink physical channel through one of the Pcell and Scell; receiving the HARQ feedback corresponding to the downlink physical channel of the Pcell at a first timing predetermined for the Pcell; and receiving the HARQ feedback corresponding to the downlink physical channel of the Scell at a second timing. The second timing is determined according to one or more of duplex modes of the Pcell and the Scell, a scheduling mode of the Scell, and predefined rules.

Description

technical field [0001] Embodiments of the present invention generally relate to wireless communication systems, and more particularly to methods, apparatuses, base stations, user equipment and computers for determining hybrid automatic repeat request (HARQ) timing in a communication system supporting carrier aggregation (CA) program. Background technique [0002] This section introduces various aspects that may facilitate a better understanding of the invention. Accordingly, the statements in this section are to be read in that light and should not be construed as an admission as to what is or is not prior art. [0003] The Long Term Evolution (LTE) and LTE-Advanced (LTE-A) standards and / or protocols defined by the Third Generation Partnership Project (3GPP, 3GPP2) are one of the next generation cellular communication standards. According to a multiplexing method, the LTE and LTE-A systems include two modes, Frequency Division Duplex (FDD) and Time Division Duplex (TDD). ...

Claims

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Application Information

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IPC IPC(8): H04L1/18
CPCH04L1/1854H04W72/23H04L5/14
Inventor 孙振年王刚雷鸣
Owner 日本电气珠式会社
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