Method and device for transmitting reference signal, control signal, and data in mobile communication system
A reference signal and wireless communication system technology, applied in the field of wireless communication systems, can solve problems such as difficulty in obtaining the minimum channel state information of base stations and terminals, and difficulty in supporting various services flexibly
Active Publication Date: 2019-05-03
SAMSUNG ELECTRONICS CO LTD
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Problems solved by technology
[0006] Specifically, when there are reference signals, especially channel state information reference signals (CSI-RS), which are fixedly transmitted with the time and frequency resources of the NR system, it may be difficult for the existing LTE system and future additional NR services to be flexible support the various services mentioned above
Therefore, even if the transmission of such reference signals should be minimized, it may be difficult to obtain the minimum channel state information between the base station and the terminal when there is no corresponding reference signal
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[0030] Currently, it is no longer appropriate to provide original voice-oriented services, and mobile communication systems have evolved into high-speed, high-quality wireless packet data communication systems for providing data services and multimedia services. For this, standardization organizations such as 3GPP, 3GPP2, and IEEE are working on the standardization of a third generation evolved mobile communication system applying a multiple access scheme using multiple carriers. In recent years, various mobile communication standards such as Long Term Evolution (LTE) of 3GPP, Ultra Mobile Broadband (UMB) of 3GPP2, and 802.16m of IEEE have been developed to support high speed, high Quality wireless packet data transmission service.
[0031] Existing third-generation evolved mobile communication systems, such as LTE, UMB or 802.16m, are based on multi-carrier multiple access schemes, apply multiple-input multiple-output (MIMO) schemes to improve transmission efficiency, and hav...
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Disclosed are a communication technique for merging, with an IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system, and a system therefor. The disclosure can be applied to intelligent services (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, security and safety related services, and the like) on the basis of 5G communication technology and IoT related technology. A new radio access technology (NR) system, which is novel 5G communication, is designed such that various services can be freely multiplexed in time and frequency resources, thereby enabling channel state information based on an aperiodic CSI-RS or a synchronization signal to be transmitted and received. According to the present invention, a base station in a wireless communication system transmits channel state information reference signal (CSI-RS) configuration information to a terminal, transmits channel state information feedback configuration information to the terminal, transmits CSI-RS trigger information to the terminal, aperiodically transmits a CSI-RS to the terminal according to the CSI-RS trigger information, and can receive, from the terminal, channel state information generated on the basis of the transmitted CSI-RS, wherein the CSI-RS is configured according to the CSI-RS configuration information, and at least a part of the configured CSI-RS can be transmitted by the CSI-RS trigger information.
Description
technical field [0001] The present invention relates to wireless communication systems, and more particularly, to channel state information reference signals and methods for measuring and reporting channel states to be used in 5G communication systems. Background technique [0002] In order to meet the demand for wireless data services increased from the deployment of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. Therefore, 5G or pre-5G communication systems are also called 'super 4G networks' or 'post-LTE systems'. 5G communication systems are considered to be implemented in higher frequency bands (mmWave), such as the 60GHz band, enabling higher data rates. In order to reduce the propagation loss of radio waves and increase the transmission distance, beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, massive Antenna technology. In addi...
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IPC IPC(8): H04L5/00H04W72/04
CPCH04W72/04H04L5/0023H04L5/0048H04L5/0057H04L5/006H04L5/0064H04L5/0091H04L27/261H04L25/0204H04L25/0224H04L5/0094H04L5/0039H04L5/0053H04L5/0007H04W72/0453H04W72/20H04B17/318H04W24/10
Inventor 郭莹宇卢勋东申哲圭
Owner SAMSUNG ELECTRONICS CO LTD