Wireless communication method, mobile station device, wireless communication system, and integrated circuit

A wireless communication system, a technology of wireless communication, applied in the direction of wireless communication, transmission system, multiplexing communication, etc., to achieve the effect of efficient retransmission

Active Publication Date: 2012-12-12
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, in the conventional technology, there is a problem that if the HARQ feedback associated with the PUSCH transmitted in the uplink is NACKed in the mobile station apparatus, the downlink component carrier for the PUSCH is transferred from If it is excluded from the downlink component carriers used for downlink communication, the mobile station apparatus repeats the retransmission of the PUSCH regardless of the success or failure of the base station apparatus in decoding the PUSCH.

Method used

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  • Wireless communication method, mobile station device, wireless communication system, and integrated circuit
  • Wireless communication method, mobile station device, wireless communication system, and integrated circuit
  • Wireless communication method, mobile station device, wireless communication system, and integrated circuit

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no. 1 Embodiment approach

[0045] Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.

[0046] figure 1 It is a conceptual diagram of the wireless communication system according to the first embodiment of the present invention. exist figure 1 Among them, the wireless communication system includes mobile station devices 1A to 1C and a base station device 3 . figure 1 It is shown that in wireless communication (downlink) from the base station apparatus 3 to the mobile station apparatuses 1A to 1C, a synchronization signal (Synchronization signal: SS), a downlink reference signal (Downlink Reference Signal: DL RS) are allocated. ), Physical Broadcast Channel (Physical Broadcast Channel: PBCH), Physical Downlink Control Channel (Physical Downlink Control Channel: PDCCH), Physical Downlink Shared Channel (Physical Downlink Shared Channel: PDSCH), Physical Multicast Channel (Physical Multicast Channel: PMCH), Physical Control Format Indicator...

no. 2 Embodiment approach

[0141] Hereinafter, a second embodiment of the present invention will be described in detail with reference to the drawings.

[0142] In the second embodiment of the present invention, when all the downlink component carriers corresponding to the uplink component carriers and on which PHICH (HARQ indicator) and PDCCH (uplink grant) are allocated are deactivated , the mobile station apparatus 1 clears (clears) the contents of all the HARQ buffers associated with the uplink component carrier, and the base station apparatus 3 deactivates the mobile station apparatus 1 corresponding to the uplink component carrier, In the case of all the downlink component carriers on which the PHICH (HARQ indicator) and PDCCH (uplink grant) are mapped, it is determined that the mobile station apparatus 1 matches all the HARQ buffers associated with the uplink component carrier to clear (empty) the contents.

[0143] In addition, it can also be expressed as: when the downlink component carrier co...

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Abstract

Disclosed is a wireless communication system-of which a mobile station device and a base station device communicate using a plurality of downlink component carriers-wherein PUSCH retransmission is efficiently controlled. In the mobile station device, which communicates with the base station device using a plurality of downlink component carriers and a plurality of uplink component carriers, when a downlink component carrier corresponding to one of the aforementioned uplink component carriers is set in a manner so as to not use downlink communication, the contents are deleted of the HARQ buffer of the uplink component carrier relating to the aforementioned downlink component carrier set in a manner so as not to use downlink communication.

Description

technical field [0001] The present invention relates to a wireless communication method, a mobile station device, a wireless communication system, and an integrated circuit. Background technique [0002] In the 3rd Generation Partnership Project (3rd Generation Partnership Project: 3GPP), the wireless access mode of cellular mobile communication and the evolution of wireless networks (hereinafter referred to as "Long Term Evolution (LTE)" or "Evolved General Land Basic Radio Access (EUTRA)".). In LTE, an Orthogonal Frequency Division Multiplexing (OFDM) method, which is multi-carrier transmission, is used as the wireless communication (downlink) from the base station device to the mobile station device. Link) communication method. In addition, SC-FDMA (Single Carrier Frequency Division Multiple Access) method, which is single carrier transmission, is used as a communication method for wireless communication (uplink) from the mobile station device to the base station device. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/04H04J11/00H04L1/16H04W72/04
CPCH04L5/001H04L1/1835H04L5/0005H04W72/042H04W72/23H04L1/1848
Inventor 铃木翔一中岛大一郎上村克成
Owner SHARP KK
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