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Method and apparatus for channel sounding in beamforming massive mimo system

A beam and channel technology, applied in the field of wireless communication systems, can solve the problem of multiple beams increasing the complexity of uplink channel detection, etc.

Inactive Publication Date: 2018-02-16
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The increased use of multiple beams for both the mobile station and the base station increases the complexity of uplink channel sounding

Method used

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  • Method and apparatus for channel sounding in beamforming massive mimo system
  • Method and apparatus for channel sounding in beamforming massive mimo system
  • Method and apparatus for channel sounding in beamforming massive mimo system

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Embodiment Construction

[0050] discussed below Figure 1 to Figure 15 , and the various embodiments used to describe the principles of the present disclosure in this patent document are by way of illustration only and should not be construed in any way as limiting the scope of the disclosure. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged cellular system.

[0051] figure 1 Illustrated is a wireless network 100 according to an embodiment of the disclosure. figure 1 The embodiment of the wireless network 100 illustrated in is for illustration only. Other embodiments of wireless network 100 may be used without departing from the scope of this disclosure.

[0052] Wireless network 100 includes eNodeB (eNB) 101 , eNB 102 and eNB 103 . eNB 101 communicates with eNB 102 and eNB 103 . The eNB 101 also communicates with an Internet Protocol (IP) network 130 such as the Internet, a proprietary IP network, or other data net...

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Abstract

Base station (BS) and mobile station (MS) methods and apparatus are provided. The BS configures an uplink sounding channel consisting of at least one OFDM symbol in an uplink realization slot. The BS signals to the MSs the use and location of the different configurations of the uplink sounding channel via a system configuration broadcast message. The uplink sounding channel includes one or more OFDM symbols different in subcarrier spacing and sampling frequency from OFDM symbols used for data transmission. Each OFDM symbol includes a sounding reference symbol corresponding to at least one transmit beam and is received by at least one receive beam to form at least one transmit-receive beam pair. The at least one transmit-receive beam pair for UL-SRS is different in different OFDM symbols. The sounding channel configuration is based on information received from neighboring BSs via inter-BS coordination through a predefined interface.

Description

technical field [0001] The present invention relates generally to wireless communication systems, and more particularly to channel sounding in beamformed massive MIMO systems. Background technique [0002] Cellular systems are expected to evolve from today's 4G (LTE, 802.16m) to 5G allowing even greater data rates (up to 100 times greater). One of the candidates for 5G systems is to use millimeter wave frequency bands to replace the PCS microwaves currently used in 4G systems. Millimeter wave frequencies are orders of magnitude larger than today's PCS frequency bands. [0003] The characteristics of propagation differ in the mmWave band in that the propagation loss in free space is much larger than that observed in the microwave band. At shorter wavelengths, the size of the antenna required to transmit mmWave is much smaller compared to that required in the microwave band. However, smaller antennas can be packed in an area comparable to that used for microwave bands. Whe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W88/08H04L5/00H04W88/02
CPCH04L5/0048H04L5/0091H04L5/0035H04W88/02H04W88/08
Inventor K.M.乔赛亚姆R.塔奥里
Owner SAMSUNG ELECTRONICS CO LTD