Unauthorized frequency band cell dynamic instruction device and method, and communication system and method

An unlicensed frequency band, dynamic indication technology, applied in the direction of transmission system, digital transmission system, electrical components, etc., can solve the problem of unstable licensed frequency band, not considering different channel communication methods, not giving, etc.

Inactive Publication Date: 2016-11-23
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, due to its particularity, especially non-exclusiveness, the unlicensed frequency band has instability problems compared to the licensed frequency band, especially for the state where the terminal is in a cell where multiple unlicensed frequency bands overlap. A method that can dynamicall

Method used

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  • Unauthorized frequency band cell dynamic instruction device and method, and communication system and method
  • Unauthorized frequency band cell dynamic instruction device and method, and communication system and method
  • Unauthorized frequency band cell dynamic instruction device and method, and communication system and method

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no. 1 approach

[0046] The first embodiment relates to a device for dynamically indicating an unlicensed frequency band cell applied in a base station and a corresponding communication system. The device for dynamically instructing cells in the unlicensed frequency band can perform dynamic indication allocation on each channel in the unlicensed frequency band.

[0047] The relationship between the so-called unlicensed frequency band and the channels formed is as follows: image 3 shown.

[0048] image 3 is a diagram representing an example of an unlicensed band. It shows that a certain unlicensed frequency band 201 ranges from 5.25 GHz to 5.35 GHz, with a total bandwidth of 100 MHz. After the unlicensed frequency band 201 is further divided, five channels 202 of 20 MHz are formed. In the LTE system, such a channel is defined as a serving cell. Therefore, the unlicensed frequency band cell (small cell) corresponds to each unlicensed frequency band channel constituting the unlicensed freq...

no. 2 approach

[0125] The difference in the structure of the second embodiment of the present invention is that, on the basis of the first embodiment, there is also an unlicensed frequency band cell grouping unit. Therefore, a detailed description of the same structure will be omitted, and only the first embodiment will be compared. The differences are described in detail.

[0126] In addition, the same code|symbol is attached|subjected to the same component, and repeated description is abbreviate|omitted.

[0127] Figure 11 It is an internal block diagram of a base station 101 having an unlicensed band cell dynamic indication device 10' related to the second embodiment.

[0128] Such as Figure 11 As shown, the unlicensed frequency band cell dynamic indication device 10' also has an unlicensed frequency band cell grouping unit 5043, and the unlicensed frequency band cell grouping unit 5043 can divide the unlicensed frequency band cells into multiple groups.

[0129] In this embodiment, ...

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Abstract

The invention provides an unauthorized frequency band cell dynamic instruction device which can allow a terminal to rapidly and correctly receive in a usable cell and thus improve data transmission efficiency. The unauthorized frequency band cell dynamic instruction device is provided with a configuration unit used for configuring an authorized frequency band cell corresponding to an authorized frequency band and an unauthorized frequency band cell corresponding to each unauthorized frequency band channel forming an unauthorized frequency band for each terminal; a resource management unit used for managing unauthorized frequency band cell state management information that indicates a state of the unauthorized frequency band cell; a downlink signaling generation unit used for generating a downlink signaling according to the unauthorized frequency band cell state management information, wherein the downlink signaling comprises unauthorized frequency band cell state information that indicates whether each unauthorized frequency band cell is available; and a downlink signaling transmitting unit used for broadcasting the downlink signaling via the authorized frequency band.

Description

technical field [0001] The present invention relates to a dynamic indication device for a cell in an unlicensed frequency band, a dynamic indication device method for a cell in an unlicensed frequency band, a communication system and a communication method in a carrier aggregation state under the scenario of aggregation of an authorized frequency band and an unlicensed carrier. Background technique [0002] In the field of wireless communication, it is necessary to use wireless channels to send and receive data. Due to the shared nature of the wireless channel, any wireless signal will cause interference to other signals transmitted on the same frequency band before it attenuates to a certain extent, so that the sink cannot receive the signal correctly. Therefore, radio frequency resources are generally regarded as precious and limited resources, which are managed by radio management departments specially established by governments of various countries. Radio frequency reso...

Claims

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Application Information

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IPC IPC(8): H04L5/00
Inventor 耿璐郑萌姜淼
Owner HITACHI LTD
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