Method for information transmission in TDD system, user equipment and base station

A time-division duplex and user equipment technology, applied in the TDD field, can solve the problem that the eNB cannot feedback the increase of PHICH overhead, and achieve the effect of cost saving

Active Publication Date: 2012-12-26
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a method for transmitting information in a time-division duplex system, user equipment, and a base station, which solves the problem that eNB cannot feed back PHICH or increases overhead in the prior art

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  • Method for information transmission in TDD system, user equipment and base station
  • Method for information transmission in TDD system, user equipment and base station
  • Method for information transmission in TDD system, user equipment and base station

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Embodiment Construction

[0065] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0066] The embodiment of the present invention relates to an LTE TDD system and an uplink HARQ process. The LTE TDD system can support seven different TDD uplink and downlink configurations. The specific configurations are shown in Table 1, including TDD uplink and downlink configuration 0 to TDD uplink and downlink configuration 6. Where D represents a downlink subframe, U represents an uplink subframe, and S represents a special subframe, but it can be used for downlink transmission, so it can be regarded as a downlink subframe.

[0067] Table 1

[0068]

[0069] Table 1 indicates whether each subframe in the seven TDD uplink and downlink configurations is an uplink subframe or a downlink subframe. For example, when configuratio...

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Abstract

The invention discloses a method for information transmission in a TDD (Time Division Duplexing) system, user equipment and a base station, and belongs to the field of TDD. The method for information transmission comprises the following steps: upstream dispatch authorization sent by a base station is received by UE (User Equipment) in a first carrier wave of a TDD system; the dispatched PUSCH (Physical Uplink Shared Channel) is received by the UE in a first subframe in a second carrier wave; a PHICH (Physical HARQ Indicator Channel)is received by the UE in a second subframe, wherein the first carrier wave and the second carrier wave are provided with different upstream and downstream configurations of TDD; a downward compatible PHICH resource exists in the second subframe and is in the first carrier wave or the second carrier wave; and the downward compatible PHICH resource is the PHICH resource of which the UE is recognizable in the TDD system, and the version of the TDD system is lower than that of the former TDD system. The method for information transmission in a TDD system, the user equipment and the base station solve the problem in the prior art that PHICH cannot be fed back because no PHICH resource exists, and the expenditure of the PHICH resource can be saved.

Description

technical field [0001] The invention relates to the field of TDD, in particular to a method for transmitting information in a time division duplex system, user equipment and a base station. Background technique [0002] In a TDD (Time Division Duplexing, Time Division Duplexing) system, uplink and downlink are separated in time, and data reception and transmission are completed at different times in the same frequency band. The LTE (Long Term Evolution, Long Term Evolution) TDD system can support 7 different TDD uplink and downlink configurations. Each configuration specifies which subframe is the uplink subframe and which subframe is the uplink subframe among the 10 subframes of a wireless frame. is the downlink subframe. The specific TDD uplink and downlink configuration adopted by the eNB (Evolved NodeB, evolved base station) may be notified to the UE (User Equipment, user equipment) through a broadcast message. [0003] The uplink HARQ (Hybrid Automatic Repeat Request,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12H04L1/16
CPCH04W28/06H04W72/12H04L1/1829H04W88/08H04W72/1289H04W72/042H04W88/02H04L5/0053H04L5/14
Inventor 官磊吕永霞陈小波
Owner HUAWEI TECH CO LTD
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