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Relay device, relay system, relay method, radio communication system, and program

A relay device and signal relay technology, applied in radio transmission systems, wireless communications, radio relay systems, etc., can solve the problem that relay devices cannot accurately perform relay operations.

Inactive Publication Date: 2016-08-03
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Therefore, in the LTE system environment, when the relay device controls the relay operation based on the total received power of all uplink signals (that is, the total received power of the entire system frequency band), if the number of mobile stations adjacent to the relay device is small Small, even if a mobile station transmits an uplink signal, the relay device may not perform the relay operation accurately because the total received power of the uplink signal received by the relay device does not exceed the reference power level

Method used

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  • Relay device, relay system, relay method, radio communication system, and program
  • Relay device, relay system, relay method, radio communication system, and program
  • Relay device, relay system, relay method, radio communication system, and program

Examples

Experimental program
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example 1

[0062] image 3 A rough structure of a radio communication system according to Working Example 1 of the present invention is shown.

[0063] refer to image 3 , the radio communication system according to this working example is provided with an evolved node (eNB) 100 , a user equipment (UE) 200 , and a relay device 300 .

[0064] exist image 3 In, eNB100 is figure 1 Example of base station 10 shown; UE 200 is figure 1 Working example of mobile station 20 shown; relay device 300 is figure 1 An example of a relay device 30 is shown.

[0065] although image 3 One eNB100, one UE200 and one relay device 300 are shown, but the number is not limited to one, and may be multiple.

[0066] The radio communication system according to this working example is used for mobile communication based on the Frequency Division Duplex-Long Term Evolution (FDD-LTE) scheme defined in the Third Generation Partnership Project (3GPP, http: / / www.3gpp.org), for example. phone system.

[0067]...

example 2

[0103] Although the radio communication system according to Working Example 2 has the same structure as the radio communication system according to Working Example 1, their operations are different.

[0104] According to Working Example 1, after relay device 300 starts an uplink signal relay operation, relay device 300 performs a level determination operation on the average received power within the frequency band used by PRACH. After a lapse of a predetermined period of time, if the result of the level determination operation of PRACH is still "NG", the relay device 300 stops the uplink signal relay operation.

[0105] Conversely, according to this working example, after relay device 300 starts an uplink signal relay operation, it also performs a level determination operation on the average received power of a frequency band used by a physical channel (eg, PUCCH) other than PRACH. After a predetermined period of time has elapsed, if both the result of the level determination ...

example 3

[0121] Figure 11 A rough structure of a radio communication system according to Working Example 3 of the present invention is shown.

[0122] refer to Figure 11 , the radio communication system according to this working example differs from the relay device 300 according to working examples 1 and 2 only in that the former is further provided with a monitoring unit 400 connected to the relay device 300 .

[0123] The monitoring unit 400 is a computer or a server that notifies the relay device 300 of setting information about the relay operation of the relay device 300 . The setting information includes frequency information indicating a frequency band used by UE 200 for an uplink channel. Here, the monitoring unit 400 may notify the relay device 300 of the above setting information periodically or periodically (for example, every time the frequency information is updated). The cycle at which the monitoring unit 400 periodically notifies the setting information to the relay...

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Abstract

The relay device according to the present invention includes: an uplink signal relay unit, which performs an uplink signal relay operation: amplifies an uplink signal transmitted from a mobile station through an uplink channel, and amplifies the amplified uplink signal a link signal is retransmitted to the base station; a frequency information acquisition unit which periodically or periodically acquires frequency information representing a frequency band used by the mobile station and for an uplink channel; an uplink signal detection unit which determines whether the average reception power of the uplink signal in the frequency band indicated by the frequency information acquired by the information acquisition unit exceeds a predetermined threshold; and a control unit which controls the execution by the uplink signal relay unit based on the determination result of the uplink signal detection unit uplink signal relay operation.

Description

technical field [0001] The present invention relates to a relay device, a relay system, a relay method, a radio communication system, and a program. Background technique [0002] In recent years, in order to improve the convenience and satisfaction of users, communication providers have made it a priority to reduce blind spots, such as reducing blind spots in buildings in the city center, inside restaurants, at the edge of residential areas, and in high-rise buildings (in places such as mobile phones) Radio waves of such mobile stations cannot fully reach) the radio wave blind area. [0003] In areas where there is not enough space to install base station equipment, or in mountainous areas where the number of users is small, repeaters (relay equipment) are usually installed to replace new base stations, and repeaters will perform relay operations: The signal sent by the mobile station is amplified and the amplified signal is retransmitted. [0004] However, because a relay...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/26H04B7/15H04W48/08
CPCH04B7/2606H04W84/047H04B7/15542H04B7/14
Inventor 中田卓
Owner NEC CORP