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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: 2015-12-02
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: DLRS), a physical broadcast Channel (PhysicalBroadcastChannel: PBCH), Physical Downlink Control Channel (PhysicalDownlinkControlChannel: PDCCH), Physical Downlink Shared Channel (PhysicalDownlinkSharedChannel: PDSCH), Physical Multicast Channel (PhysicalMulticastChannel: PMCH), Physical Control Format Indicator Channel (PhysicalControlFo...

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

To perform control of PUSCH retransmission efficiently in a wireless communication system where a mobile station apparatus and a base station apparatus communicate with each other using a plurality of downlink component carriers. In a mobile station apparatus which communicates with a base station apparatus using a plurality of downlink component carriers and a plurality of uplink component carriers, in case that the downlink component carrier corresponding to the uplink component carrier is set not to be used for downlink communication, the mobile station apparatus flushes HARQ buffers of the uplink component carrier associated with the downlink component carrier set not to be used for 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 (3rdGenerationPartnershipProject: 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 Universal Terrestrial Radio Access" are discussed. (EUTRA)".). In LTE, an Orthogonal Frequency Division Multiplexing (OFDM) method that is multi-carrier transmission is used as a communication method for wireless communication (downlink) from a base station device to a mobile station device. In addition, the 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 apparatus to the base stati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/04H04J11/00H04L1/16H04W72/04
CPCH04L1/1835H04L5/0005H04L5/001H04W72/042H04W72/23H04L1/1848
Inventor 铃木翔一中岛大一郎上村克成
Owner SHARP KK
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