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Wireless communication system, mobile station device, and base station device
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A technology for mobile stations and base stations, which is applied in the field of wireless communication systems, mobile station devices and base station devices. It can solve the problems of increased cyclic decoding times of downlink control channels and increased processing load of mobile station devices, etc., so as to reduce the processing load Effect
Active Publication Date: 2016-08-03
SHARP KK
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In addition, as the system bandwidth becomes wider, the number of control channel elements increases, the number of cyclic decoding of the downlink control channel increases, and the processing load on the mobile station apparatus increases.
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no. 1 approach
[0094] Figure 4 It is a diagram explaining the numbers of CCEs in the system frequency band in the first embodiment of the present invention. exist Figure 4 In , a case is shown in which five subbands are configured in the system frequency band, and 20 control channel elements are configured in each subband. and, in Figure 4 In the frequency domain of , it is assumed that frequencies are arranged from low to high in the order of sub-band 1<sub-band 2<sub-band 3<sub-band 4<sub-band 5.
[0095] The base station apparatus 1 first interleaves the resource elements in the subband 1 by the block interleaver described above. The base station apparatus 1 assigns numbers CCE1, CCE2, CCE3, CCE4, CCE5, CCE6, CCE7, CCE8, CCE9, CCE10, CCE11, CCE12 to the control channel elements composed of nine resource element groups in the order of output from the block interleaver. , CCE13, CCE14, CCE15, CCE16, CCE17, CCE18, CCE19, CCE20.
[0096] Next, the control channel elements of the subba...
no. 2 approach
[0220] Hereinafter, as the second embodiment of the present invention, the number of mobile station device-specific data allocated to each subband of the same mobile station device 2 as the control information number indicator, that is, the number of downlink control channels The situation of the information is explained.
[0221] In the second embodiment, Figure 12 The control information count indicator generating unit 261 and the Figure 13The function of the control information number indicator detection unit 401 in the reception processing unit 21a of the mobile station apparatus 2 shown is different, and other configurations are the same as those of the first embodiment, so description thereof will be omitted.
[0222] The control information number indicator generation unit 261 of the base station apparatus 1 generates a control information number indicator including information indicating the number of downlink control channels allocated to each subband of the same m...
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Abstract
A wireless communication system, wherein a base station apparatus includes: a control information generation unit that generates control information specific to the mobile station apparatus; A control information number indicator for the number of pieces of control information; a transmission unit that transmits the control information number indicator and the control information to the mobile station apparatus; receiving the control information number indicator and control information sent from the base station apparatus in the selected mobile station dedicated search area; a control information number indicator detection unit, which detects the control information number indicator; a control channel decoding unit, It decodes the control channel according to the number of detected control information.
Description
technical field [0001] The present invention relates to a radio communication system, a mobile station device, and a base station device. [0002] this application claims priority based on Japanese Patent Application No. 2008-278517 for which it applied to Japan on October 29, 2008, and uses the content here. Background technique [0003] WidebandCode Division Multiple Access (W-CDMA: WidebandCode Division Multiple Access) as a third-generation (3G) wirelessaccess method for cellular mobile communications is standardized in the Third Generation Partnership Project (hereinafter referred to as "3GPP (3rd Generation Partnership Project)") , and start the cellular mobile communication service based on this mode. Furthermore, in 3GPP, the evolution of 3G (hereinafter referred to as "EUTRA (Evolved Universal Terrestrial Radio Access)") and the evolution of 3G networks (hereinafter referred to as "EUTRAN (Evolved Universal Terrestrial Radio Access Network)") are studied. [00...
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Application Information
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