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Wireless communication system, base station, mobile station, and wireless communication method

A wireless communication system and wireless communication technology, applied in the field of wireless communication systems, can solve problems such as overlapping of multiple signals, and achieve effective resources and effective utilization

Active Publication Date: 2014-05-28
FUJITSU CONNECTED TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the interval of the cyclic shift is too small, when multipath with a large time difference occurs, multiple signals may overlap.

Method used

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  • Wireless communication system, base station, mobile station, and wireless communication method
  • Wireless communication system, base station, mobile station, and wireless communication method
  • Wireless communication system, base station, mobile station, and wireless communication method

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Embodiment Construction

[0026] Embodiments of the wireless communication system, base station, mobile station, and wireless communication method disclosed in this application will be described in detail below with reference to the accompanying drawings. In addition, the wireless communication system, base station, mobile station, and wireless communication method disclosed in this application are not limited to the following embodiments.

[0027] figure 1 It is a diagram showing the arrangement of cells C1 to C3 and RRHs 40a to 401 in the radio communication system 1 . Such as figure 1 As shown, in the wireless communication system 1, a plurality of base stations 10, 20, 30 form a plurality of cells C1, C2, C3. A plurality of RRHs (Remote Radio Head: Remote Radio Head) 40 a - 40 l having antennas are arranged in each of the cells C1 , C2 , and C3 . The RRHs 40 a to 40 l arrange antennas, RF (Radio Frequency: radio frequency) units, and control units such as a baseband processing unit at different ...

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Abstract

A base station (10) communicates with a mobile station. The base station (10) has a scheduler unit (17) and a control signal transmission unit (18). The scheduler unit (17) selects identification information specifying a resource, from a plurality of resources, to be used by the mobile station to transmit signals. The control signal transmission unit (18) transmits the identification information to the mobile station. The mobile station has a control signal reception unit and a DM-RS transmission unit. The control signal reception unit receives the identification information transmitted by the control signal transmission unit (18). The DM-RS transmission unit transmits the signals to the base station (10), using the resource specified by the identification information.

Description

technical field [0001] The present invention relates to a wireless communication system, a base station, a mobile station and a wireless communication method. Background technique [0002] Conventionally, in systems using wireless communication methods such as LTE (Long Term Evolution), when a mobile station transmits data to a base station, the base station sends a message to the mobile station for assigning an uplink direction before the data is received. Resource control signal. The mobile station transmits data and RS (Reference Signal: Reference Signal) to the base station accompanying the reception of the control signal. This RS is transmitted as one symbol in the same slot as the data via a PUSCH (Physical Uplink Shared CHannel: Physical Uplink Shared CHannel). The base station performs channel estimation according to the RS, and uses the estimation result to demodulate the data received through the PUSCH. This RS is called a DM-RS (DeModulation RS: demodulation RS...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12H04W72/54
CPCH04L5/00H04W72/1289H04W72/1231H04L5/0053H04L1/0027H04L5/0048H04W72/23H04W72/542
Inventor 伊藤章
Owner FUJITSU CONNECTED TECH LTD