Electronic device and wireless communication method in wireless communication system
A technology for wireless communication systems and electronic equipment, applied in wireless communication, radio transmission systems, diversity/multi-antenna systems, etc., can solve problems such as high transmission power, interference, and serious interference
Inactive Publication Date: 2021-06-15
SONY CORP
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Problems solved by technology
On the other hand, beamforming is generally aimed at users at the edge of the cell, so the transmission power is relatively large. Once adjacent cells use the same CSI-RS resources to transmit beamforming CSI-RS, the interference will be very serious.
On the other hand, in the serving cell, using the same CSI-RS resource to transmit beamforming CSI-RS to two user equipments will also cause certain interference
Method used
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[0031] Examples of the present disclosure will now be described more fully with reference to the accompanying drawings. The following description is merely exemplary in nature and is not intended to limit the disclosure, application or uses.
[0032] Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth such as examples of specific components, devices and methods, to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms, and that neither should be construed to limit the scope of the disclosure. In some example embodiments, well-known processes, well-known structures, and well-known technologies are not described in detail.
[0033]The UE (User Equipment, user equipment) in...
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The present disclosure relates to an electronic device and a wireless communication method in a wireless communication system. An electronic device according to the present disclosure includes one or more processing circuits configured to perform the following operations: in response to a measurement indication from a base station in a wireless communication system, channel state information reference signal CSI- The RSs are measured separately; and feedback information is generated based on the measurement results, so that the base station selects an antenna port for transmitting CSI-RS to the electronic device from one or more antenna ports, and the feedback information includes indicating that one or more antenna ports occupancy information for each of the occupancy situations. Using the electronic device and the wireless communication method according to the present disclosure, the port selection of CSI-RS can be realized, the interference of beamforming CSI-RS between cells and within the cell can be reduced, the performance of the system can be improved, and at the same time, only a small amount of signaling is required overhead can be achieved.
Description
technical field [0001] The present disclosure relates to the technical field of wireless communication, and in particular to an electronic device in a wireless communication system and a method for performing wireless communication in the wireless communication system. Background technique [0002] This section provides background information related to the present disclosure which is not necessarily prior art. [0003] CSI-RS (Channel State Information-Reference Signals, Channel State Information-Reference Signals) is introduced in the R10 (Release10, version 10) version of the LTE-A (Long Term Evolution-Advanced, advanced long-term evolution) system, which is used to obtain Channel state information. Beamforming is a signal preprocessing technology based on antenna arrays. Beamforming generates directional beams by adjusting the weighting coefficients of each array element in the antenna array, so that significant array gain can be obtained. Therefore, beamforming techno...
Claims
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IPC IPC(8): H04B7/06
CPCH04B7/061H04B7/0695H04B7/06H04B7/063H04B7/0602H04B7/0617H04B7/0626H04B17/309H04W84/042
Inventor 徐瑨高程刘思綦金炳丞陈晋辉
Owner SONY CORP