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wireless communication device

A technology of a wireless communication device and a wireless communication terminal is applied in the field of wireless communication devices to achieve the effect of reducing the consumption of wireless resources

Inactive Publication Date: 2019-05-14
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, research is underway to compensate for the increased propagation loss by forming transmit beams

Method used

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no. 1 Embodiment approach

[0032] figure 1 It is a diagram showing a configuration example of a communication system to which the wireless communication device of the first embodiment is applied. figure 1 The illustrated communication system is configured to include a wireless base station 1, a wireless terminal 2, and a higher-level device 3. The wireless base station 1 is a wireless communication device according to the first embodiment.

[0033] The wireless base station 1 is configured to be able to form a plurality of beams 5 using an array antenna, and the wireless base station 1 uses one or more beams 5 to communicate with a wireless terminal 2 as a counterpart device. In addition, in figure 1 It is assumed that the wireless terminal 2 is one unit, but this is only an example, and a plurality of wireless terminals 2 can communicate with the wireless base station 1 at the same time. The wireless terminal 2 may be configured to have multiple antennas. The upper device 3 is a device on the core networ...

no. 2 Embodiment approach

[0093] The wireless communication device of the second embodiment will be described. In addition, the configuration of the communication system to which the wireless communication device is applied and the configuration of the wireless communication device are the same as in the first embodiment.

[0094] The wireless base station 1 as the wireless communication device of the first embodiment is Figure 4 In step S16 shown, the beam shape is temporarily changed, but in addition to changing the beam shape, the antenna used for transmission of data and DMRS may be temporarily changed. The wireless base station 1 of the present embodiment, for example, performs the equivalent of Figure 4 In the process of step S16 shown, follow Picture 10 The rotation shown changes the antenna. Picture 10 It is a diagram showing an example of a change in the antenna position when the number of antennas 15 is eight and two of the eight are allocated to the wireless terminal 2 for communication. in...

no. 3 Embodiment approach

[0097] The wireless communication device of the third embodiment will be described. In addition, the configuration of the communication system to which the wireless communication device is applied and the configuration of the wireless communication device are the same as in the first embodiment.

[0098] Such as Figure 4 As shown, when determining the initial value of the beam shape, the wireless base station 1 as the wireless communication device of the first embodiment receives a notification of the beam ID indicating the beam shape with the best communication quality from the wireless terminal 2. In contrast, the wireless base station 1 of the present embodiment not only collects the beam ID of the beam shape with the best communication quality from each wireless terminal 2, but also collects the communication quality information from each wireless terminal 2 when the beam of each beam shape is used. Beam IDs of all beam shapes or beam IDs of multiple beam shapes with high co...

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Abstract

The wireless communication device of the present invention is, for example, a wireless base station (1) that performs spatial multiplexing transmission of data, and has: a plurality of array antennas (15); and a beam shape control unit (14), which controls the plurality of array antennas (15) , so that the array antenna (15) respectively forms beams of different shapes to transmit the communication quality measurement signal to the range that the device should cover, and, according to each beam measured by the counterpart device that receives the communication quality measurement signal communication quality, determine the initial value of the beam shape used in data transmission to the other party’s device, and after the initial value is determined, repeatedly execute the following process: control the array antenna (15) to temporarily change the data transmission to the other party’s device The beam shape being used, and the beam shape used for data transmission to the counterparty is determined again based on the communication quality when using the temporarily changed beam shape and the communication quality when using the beam shape before the temporary change.

Description

Technical field [0001] The invention relates to a wireless communication device for spatially multiplexing and transmitting data. Background technique [0002] In order to transmit large-capacity data at a limited frequency, the development of a MIMO (Multi-Input Multi-Output: Multiple Input Multiple Output) system using multiple transmit and receive antennas for spatial multiplexing transmission is underway. In the face of further improvement in frequency utilization efficiency, an increase in the number of spatial multiplexing can also be expected in the future. [0003] In the next-generation mobile communication system, research is also being conducted on the effective use of high frequencies exceeding 6 GHz, but there is a problem of increased propagation loss when using high frequency bands. On the other hand, when a high frequency band is used, the antenna element can have multiple elements, thereby forming a transmission beam with a higher gain. Therefore, research is und...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J99/00
CPCH04B7/0413H04B7/0617H04B7/0619H04B7/0695H01Q3/01H04J11/0069H04W16/28
Inventor 内田繁冈崎彰浩平明德
Owner MITSUBISHI ELECTRIC CORP