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Base station apparatus, mobile station apparatus, and synchronization channel transmission method

A technology for synchronizing channels and mobile stations, which is applied in the direction of synchronization devices, transmission path separation devices, transmission path sub-channel allocation, etc., and can solve problems such as deterioration of S-SCH characteristics

Active Publication Date: 2010-03-31
NTT DOCOMO INC
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Problems solved by technology

This is because when the number of P-SCH sequences and the types of P-SCH transmission intervals are small, the probability that the P-SCH sequences in adjacent cells are the same or the probability that the P-SCH transmission intervals are the same increases, and the station Increased probability of occurrence of S-SCH characteristic deterioration in an inter-synchronous system

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  • Base station apparatus, mobile station apparatus, and synchronization channel transmission method
  • Base station apparatus, mobile station apparatus, and synchronization channel transmission method
  • Base station apparatus, mobile station apparatus, and synchronization channel transmission method

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Embodiment Construction

[0120] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings for explaining the embodiments, parts having the same function are assigned the same symbols, and repeated descriptions are omitted.

[0121] refer to image 3 A wireless communication system including a mobile station and a base station apparatus according to an embodiment of the present invention will be described.

[0122] The wireless communication system 1000 is a system to which, for example, Evolved UTRA and UTRAN (Evolved UTRA and UTRAN, alias: Long Term Evolution or super 3G) is applied. The wireless communication system 1000 includes a base station device (eNB: eNode B) 200 m (200 1 、200 2 、200 3 ,...,200 m , m is an integer of m>0), and the base station device 200 m Multiple mobile stations 100 in communication n (100 1 、100 2 、100 3 ,...100 n , n is an integer of n>0). The base station device 200 is connected to a high-level st...

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Abstract

A base station apparatus which communicates with a mobile station by OFDM in a down link in a wireless communication system. The base station apparatus comprises sequence selection means for selectinga sequence of a plurality of synchronization signals, synchronization signal generation means for generating a secondary synchronization channel using a part of the selected sequences of the synchronization signal and other sequences of the synchronization signal, and transmission means for transmitting the secondary synchronization channel. Cell-unique information is detected using the secondarysynchronization channel.

Description

technical field [0001] The present invention relates to a wireless communication system using Orthogonal Frequency Division Multiplexing (OFDM) in the downlink, and particularly relates to a base station device, a mobile station device, and a synchronization channel transmission method. Background technique [0002] 3GPP, the standardization body of W-CDMA, is studying long-term evolution (LTE: Long Term Evolution) as the successor communication method of W-CDMA, HSDPA, and HSUPA. As a wireless access method, OFDM is being studied for the downlink, and OFDM is being studied for the uplink. Lu is studying SC-FDMA (Single-Carrier Frequency Division Multiple Access, Single-Carrier Frequency Division Multiple Access) (for example, refer to Non-Patent Document 1). [0003] OFDM is a method of dividing the frequency band into multiple narrow frequency bands (subcarriers) and carrying data on each frequency band for transmission. By partially overlapping the subcarriers in frequenc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/16H04W56/00H04L27/26H04W92/10
CPCH04J11/0069H04L27/2655H04W48/16H04L27/2626H04L27/2613H04L5/005H04L5/0007H04W48/12H04L27/2675H04J11/0076H04L5/0048H04L5/0053H04W56/0015H04W92/10H04L27/26136H04W56/00H04J13/0025H04J13/0003
Inventor 樋口健一岸山祥久永田聪佐和桥卫
Owner NTT DOCOMO INC
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