TW201631904A - Device and method - Google Patents

Abstract

To enable better reception quality when performing transmission using a directive beam. Provided is a device comprising: an acquisition unit that acquires power-related information concerning power according to the number of directional beams formed within a subframe in a frequency band; and a control unit which notifies a terminal device of the power-related information in the downlink control information transmitted within the subframe in the aforementioned frequency band.

Description

Device and method

The disclosure relates to apparatus and methods.

Now, in the 3GPP (Third Generation Partnership Project), various technologies required to increase the capacity of the cellular network system are being studied in order to accommodate explosively increased traffic. It can even be said that in the future, it will require about 1000 times the capacity. In terms of technologies such as MU-MIMO (Multi-User Multiple-Input Multiple-Output) and CoMP (Coordinated Multipoint), it is considered that the capacity of the cellular network system can only be increased by several times. Therefore, there needs to be an epoch-making approach.

For example, as a method for greatly increasing the capacity of a cellular network system, it is conceivable to perform beamforming by a base station using a directional antenna including a plurality of antenna elements (for example, about 100 antenna elements). Such a technique is one of technologies called Large-Scale MIMO or Massive MIMO. According to such beamforming, the half value of the beam will be narrowed. That is, a sharp beam is formed. Also, by arranging a plurality of antenna elements on a plane, it is also possible Form a beam in the desired three-dimensional direction.

For example, Patent Documents 1 to 3 disclose techniques to which a directional beam in a three-dimensional direction is used.

[Previous Technical Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2014-204305

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2014-53811

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2014-64294

However, for example, in the case where the number of directional beams (for example, directional beams of massive MIMO) formed at the same time is dynamically changed, the power allocated to each directional beam also dynamically changes. It may cause the ACG (Automatic Gain Control) of the terminal device to fail to follow. As a result, the quality of the reception may be degraded.

Therefore, the provision of a mechanism for obtaining a relatively good reception quality when the directional beam is caused by the transmission is required.

According to the disclosure, there is provided an apparatus comprising: an acquisition unit that obtains a direction formed in a sub-frame in a frequency band The power-related information of the power corresponding to the number of the sexual beams; and the control unit notifying the terminal device of the power-related information in the chain control information transmitted in the upper sub-frame in the upper frequency band.

Moreover, in accordance with the present disclosure, a method can be provided, comprising: the step of, by the processor, obtaining power-related information about a power corresponding to the number of directional beams formed in a sub-frame in a frequency band; And in the above-mentioned frequency band, in the chain control information transmitted in the upper sub-frame, the power-related information is reported to the terminal device.

Further, according to the present disclosure, there is provided an apparatus comprising: an acquisition unit that acquires power-related information on a power corresponding to the number of directional beams formed in a sub-frame in a frequency band, and the power is recorded The related information is notified to the terminal device by the base station in the chain control information transmitted in the upper sub-frame in the upper frequency band; and the control unit performs the above-mentioned terminal device based on the power-related information The gain setting of the receiver amplifier.

Moreover, according to the present disclosure, a method can be provided for: obtaining, by a processor, power-related information about a power corresponding to the number of directional beams formed in a sub-frame in a frequency band, and recording The power-related information is a step of notifying the terminal device by the base station in the chain control information transmitted in the upper sub-frame in the upper frequency band; and performing the power-on terminal device based on the power-related information The step of setting the gain of the receiver amplifier.

As described above, according to the present disclosure, it is possible to obtain a relatively good reception quality when the transmission by the directional beam is performed. In addition, the effect of the above is not necessarily limited to the explanation, and may be combined with the effect of the above, or the effect of the above, to achieve any of the effects to be disclosed in the present specification, or other effects that can be grasped according to the present specification.

1‧‧‧ system

100‧‧‧Base Station

101‧‧‧Hive Network

151‧‧‧Information Acquisition Department

153‧‧‧Control Department

200‧‧‧ Terminals

241‧‧‧Information Acquisition Department

243‧‧‧Control Department

FIG. 1 is an explanatory diagram for explaining a weight set for beamforming of massive MIMO.

[Fig. 2] An explanatory diagram for explaining an example of a case where beamforming of large-scale MIMO is performed.

[Fig. 3] An explanatory diagram for explaining the relationship between the multiplication of the weight coefficient and the insertion of the reference signal.

[Fig. 4] An explanatory diagram for explaining other relationships between the multiplication of the weight coefficients and the insertion of the reference signal.

[Fig. 5] An explanatory diagram for explaining an example of the number of directional beams formed in each sub-frame.

Fig. 6 is an explanatory diagram for explaining an example of a dynamic range and reception power.

Fig. 7 is an explanatory diagram showing an example of a schematic configuration of a system according to an embodiment of the present disclosure.

Fig. 8 is a block diagram showing an example of a configuration of a base station according to the embodiment. Figure.

Fig. 9 is a block diagram showing an example of a configuration of a terminal device according to the embodiment.

FIG. 10 is an explanatory diagram for explaining an example of power related information indicating a power offset. FIG.

FIG. 11 is an explanatory diagram for explaining an example of a PDCCH to which downlink control information is transmitted.

FIG. 12 is an explanatory diagram for explaining a processing flow of gain setting of an LNA.

[Fig. 13] An explanatory diagram for explaining an example of stopping the transmission of the downlink data signal.

FIG. 14 is an explanatory diagram for explaining an example of power after the stop of the transmission of the downlink data signal. FIG.

Fig. 15 is a flowchart showing an example of a schematic flow of processing in the same embodiment.

Fig. 16 is a block diagram showing a first example of a schematic configuration of an eNB.

FIG. 17 is a block diagram showing a second example of the schematic configuration of the eNB.

[Fig. 18] A block diagram showing an example of a schematic configuration of a smartphone.

Fig. 19 is a block diagram showing an example of a schematic configuration of a driving navigation device.

Hereinafter, a preferred embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. In addition, in the present specification and the drawings, constituent elements having substantially the same functional configuration are denoted by the same reference numerals. The overlapping description is omitted.

In addition, the explanation is performed in the following order.

1. Introduction

1.1. Related technology

1.2. Technical issues

2. The schematic structure of the system

3. Composition of each device

3.1. Composition of the base station

3.2. Composition of the terminal device

4. Technical characteristics

5. Process flow

6. Modifications

7. Application examples

7.1. Application examples of base stations

7.2. Related application examples of terminal devices

8. Summary

<<1. Introduction>>

First, the technique related to the embodiment of the present disclosure and the technical subject of the present embodiment will be described with reference to Figs. 1 to 6 .

<1.1. Related Technology>

Referring to Figures 1 to 4, beam forming, measurement, and selection of a hive network will be described as a technique associated with an embodiment of the present disclosure. Select and have beamforming for CSR.

(1) Beamforming (a) The need for massive MIMO

Now, in 3GPP, in order to accommodate explosively increased traffic, various technologies required to increase the capacity of the cellular network system are being studied. It can even be said that in the future, it will require about 1000 times the capacity. In terms of technologies such as MU-MIMO and CoMP, it is considered that the capacity of the cellular network system can only be increased by several times. Therefore, there needs to be an epoch-making approach.

In the release 10 of 3GPP, the eNodeB is equipped with eight antennas. Therefore, according to the antenna, 8-layer MIMO can be realized in the case of SU-MIMO (Single-User Multi-Input Multiple-Input Multiple-Output). The so-called 8-layer MIMO is a technique for spatially multiplexing eight independent streams. Furthermore, it is also possible to implement two layers of MU-MIMO for four users.

On the User Equipment (UE), it is difficult to increase the antenna elements of the antenna of the UE due to the small space required for the antenna configuration and the limited processing capability of the UE. However, with the advancement of antenna mounting technology in recent years, it is not impossible to arrange a directional antenna including 100 antenna elements on the eNodeB.

For example, as a method for greatly increasing the capacity of a cellular network system, it is conceivable to perform beamforming by a base station using a directional antenna including a plurality of antenna elements (for example, about 100 antenna elements). This technology is called Large-Scale MIMO, or One form of Massive MIMO technology. According to such beamforming, the half value of the beam will be narrowed. That is, a sharp beam is formed. Further, by arranging a plurality of antenna elements on a plane, it is also possible to form a beam in a desired three-dimensional direction. For example, by forming a beam toward a higher position than the base station (for example, a floor above the high-rise building), a signal is transmitted to the terminal device existing at the current location, which is proposed.

In typical beamforming, the direction of the beam can be changed in the horizontal direction. Therefore, typical beamforming is also known as 2-dimensional beamforming. On the other hand, in the beamforming of massive MIMO (or massive MIMO), the direction of the beam can be changed in the vertical direction except for the horizontal direction. Therefore, beamforming of large-scale MIMO can also be said to be 3-dimensional beamforming.

In addition, since the number of antennas increases, the number of users in MU-MIMO can also increase. Such a technique is another form of technology called massive MIMO or massive MIMO. In addition, when the number of antennas of the UE is two, the number of spatially independent streams for one UE is two. Therefore, instead of increasing the number of streams for one UE, it is better to increase the number of users of MU-MIMO. It is more reasonable.

(b) Weight collection

The set of weights for beamforming (i.e., the set of weighting coefficients required for a plurality of antenna elements) is represented in a complex number. Hereinafter, an example of a weight set for beamforming of large-scale MIMO will be specifically described with reference to FIG. 1.

FIG. 1 is an explanatory diagram for explaining a weight set for beamforming of massive MIMO. Referring to Fig. 1, an antenna element arranged in a lattice shape is illustrated. Further, two axes x and y orthogonal to each other on the plane in which the antenna elements are arranged, and one axis z which is orthogonal to the plane are also illustrated. Here, the direction of the beam to be formed is expressed by, for example, an angle phi (Greek alphabet) and an angle theta (Greek alphabet). The angle phi (Greek letter) is the angle between the component of the xy plane in the beam direction and the x-axis. Also, the angle theta (Greek letter) is the angle between the beam direction and the z-axis. In this case, for example, the weight coefficient V _m,n of the antenna elements arranged in the x-axis direction and the n-th antenna element in the y-axis direction can be expressed as follows.

f is the frequency and c is the speed of light. Also, j is an imaginary unit in a complex number. Further, d _x is an interval between antenna elements in the x-axis direction, and d _y is an interval between antenna elements in the y-axis direction. Further, the coordinates of the antenna element can be expressed as follows.

[Number 2] x = ( m -1) d _x , y = ( n -1) d _y

In addition, the weight set for typical beamforming (2-dimensional beamforming) can be decomposed into: used to form a beam that is oriented in the desired horizontal direction. The set of weights required, and the set of weights needed to adjust the phase between the antennas. Therefore, the weighting set for beamforming of large-scale MIMO can be decomposed into: a first weight set required to form a beam in a desired vertical direction, and a second weight required to form a beam in a desired horizontal direction. A set of weights, and a third set of weights needed to adjust the phase between the antennas.

(c) Changes in the environment caused by beamforming of massive MIMO

When beamforming for large-scale MIMO is performed, the gain will reach 10 dB or more. In the cellular network system using the beamforming described above, the variation of the radio wave environment may be more severe than in the previous cellular network system.

(d) Cases in which beamforming of large-scale MIMO is performed

For example, consider forming a beam toward a high-rise building by a base station of the metropolitan area. Further, even in the suburbs, it is considered that a base station of a small honeycomb network forms a beam toward a peripheral area of the base station. In addition, the base station system of the giant honeycomb network in the suburbs is likely to not perform beamforming for large-scale MIMO.

Fig. 2 is an explanatory diagram for explaining an example of a case where beamforming of large-scale MIMO is performed. Referring to Fig. 2, a base station 71 and a high-rise building 73 are illustrated. For example, the base station 71 forms a directional beam 79 to the high-rise building 73 in addition to the directional beams 75, 77 that are formed on the ground.

(2) Determination (a) Determination of CRS

In LTE (Long Term Evolution), a terminal device performs measurement on a CRS (Cell-specific Reference Signal) transmitted by a base station. Specifically, the terminal device performs the measurement of the quality of the propagation path between the base station and the terminal device by the reception of the CRS transmitted by the base station. This measurement is referred to as "RRM (Radio Resource Management) measurement" or simply as "measurements".

The results of the above measurements are used to select the honeycomb network required for the terminal device. Specifically, for example, the result of the above measurement is used for Cell Selection/cell reselection by the RRC (Radio Resource Control) RRC Idle terminal device. Further, for example, the result of the measurement described above is reported by the RRC Connected terminal device to the base station, and is used for the handover decision by the base station.

As described above, the above measurement is performed by the reception of the CRS. The CRS is a signal required to measure the quality of the transmission path of the non-directional radio wave, and thus is transmitted without beamforming. That is, the CRS is transmitted without being subjected to multiplicative beamforming.

In addition, there is a reference signal for demodulation called a DM-RS (Demodulation Reference Signal) or a UE specific reference signal (UE specific reference signal). The reference signal for demodulation is multiplied by the weight set for beamforming, and thus is not suitable for measuring the quality of the transmission path of the non-directional radio wave. Also, there is a reference signal called CSI-RS (Channel State Information Reference Signal). The CSI-RS, like the CRS, is transmitted without beamforming. However, the frequency of CSI-RS transmission is low, so the measurement caused by the reception of CSI-RS will take a long time. Hereinafter, the relationship between the multiplication of the weight coefficients and the insertion (or entropy) of the reference signal will be described with reference to FIG.

Fig. 3 is an explanatory diagram for explaining the relationship between the multiplication of the weight coefficient and the insertion of the reference signal. Referring to FIG. 3, the signal 82 corresponding to each antenna element 81 is multiplied by a complex multiplication coefficient 83 by the multiplier 84. Then, the transmission signal 82, which has been multiplied by the weight coefficient 83, is transmitted from the antenna element 81. Further, the DR-MS 85 is inserted before the multiplier 84, and is multiplied by the weighting coefficient 83 in the multiplier 84. Then, the DR-MS 85, which has been multiplied by the weight coefficient 83, is transmitted from the antenna element 81. On the other hand, CRS86 (and CSI-RS) is inserted after the multiplier 84. Then, the CRS 86 (and CSI-RS) is transmitted from the antenna element 81 without being multiplied by the weight coefficient 83.

(b) RSRP and RSRQ

In LTE, the measurement of CRS is measurement of RSRP (Reference Signal Received Power) and/or RSRQ (Reference Signal Received Quality). In other words, The terminal device obtains RSRP and/or RSRQ as a result of measurement of the CRS. RSRQ is calculated from RSRP and RSSI (Received Signal Strength Indicator).

RSRP is the received power of the CRS for each single resource element. That is, RSRP is the average of the received power of the CRS. The receiving power of the CRS is obtained by detecting the correlation between the received signal in the resource element of the CRS and the known signal, that is, the CRS. RSRP corresponds to the desired signal "S(Signal)".

RSSI is the total power of the signal per OFDMA (Orthogonal Frequency Division Multiple Access) symbol. Therefore, the RSSI contains the desired signal, interference signal and noise. That is, the RSSI system corresponds to "S(Signal) + I(Interference) + N (Noise)".

The RSRQ is RSRP/(RSSI/N). N is the number of resource blocks used in the calculation of RSSI. The resource block is a resource block arranged in the frequency direction. Therefore, the RSRQ is a value obtained by dividing the RSRP by the RSSI of each resource block. That is, the RSRQ corresponds to the SINR (Signal-to-Interference-plus-Noise Ratio).

As described above, by measuring the CRS, the reception power (i.e., RSRP) and the reception quality such as the SINR (i.e., RSRQ) can be obtained.

In addition, the reception quality (ie, RSRQ) is frequently used in the selection of the hive network described later. This is because, based solely on the reception Power (also known as RSRP) to select the hive network, then may choose the hive network with large interference.

(c) The effect of averaging

In order to obtain RSRP and RSRQ, it is necessary to receive signals from several milliseconds to tens of milliseconds to average the received power. This is because if RSRP and RPRQ are obtained by averaging only one time slot or one sub-set, it is easily affected by instantaneous changes in channels such as attenuation.

In addition, the method of averaging is implemented in each terminal device, and there is no specific formulation in the specifications.

(3) Selection of honeycomb network (a) Examples of the choice of the hive network

For example, the terminal device performs cell selection/cell reselection when it is in RRC idle (RRC Idle). That is, the terminal device selects a cellular network (for example, a cellular network required for paging reception) required for communication.

Also, for example, the base station system performs a Handover Decision. That is, the base station selects the target cellular network required by the terminal device, and decides to take over the target cellular network from the servo cellular network required by the terminal device.

Further, for example, the base station adds an Scell (Secondary Cell) that performs carrier aggregation. The Scell is also called SCC (Secondary Component Carrier).

In addition, the "honeycomb network" herein may mean a communication area of a base station or a frequency band used by a base station. In addition, the "honeycomb network" here may also be a Pcell (Primary Cell) or an Scell of carrier aggregation. The above-mentioned Pcell system is also called PCC (Primary Component Carrier), and the above-mentioned Scell system is also called SCC (Secondary Component Carrier).

(b) Selection of the hive network when beamforming is performed

As described above, in one aspect of a technique called massive MIMO or massive MIMO, the base station performs beamforming using a directional antenna including a plurality of antenna elements (for example, about 100 antenna elements). In this case, the base station can change the direction of the beam not only in the horizontal direction but also in the vertical direction. Therefore, as an example, the base station can increase the throughput rate at a higher position by forming a beam that is oriented higher than the base station (for example, the upper floor of the high-rise building). As another example, a small base station can reduce interference with adjacent base stations by forming a beam directed to a nearby area.

Here, in the case where the reception of the signal due to the beamforming of the large-scale MIMO becomes mainstream, whether or not the selection of the cellular network is performed based on the result of the measurement of the CRS is likely to occur.

Specifically, it can be known from the measurement of the CRS that it is only the quality of the transmission path of the radio wave having no directivity. However, the transmission path of the non-directional radio wave is completely different from the transmission path of the sharp beam formed by beamforming of large-scale MIMO. Therefore, if In the case where the signal transmission by the beamforming is premised, the selection of the honeycomb network based on the result of the measurement of the CRS may not select an appropriate cellular network.

As an example, if the terminal device in the cellular network selected based on the result of the CRS measurement transmits a signal, there is a possibility that interference is generated more than a sharp beam from an adjacent base station. As another example, even if the result of the measurement of the CRS for a certain honeycomb network is better than the result of the measurement of the CRS for another honeycomb network, when beamforming is performed, it is still possible to write up another honeycomb network. The quality of communication is better than the communication quality in a certain hive network.

As described above, when beamforming is performed, there is a possibility that an appropriate honeycomb network cannot be selected for the terminal device.

(c) The case where the measurement of CRS is not ideal

As described above, for example, beamforming in consideration of massive MIMO is performed by a base station of the metropolitan area or a base station of a small cellular network. Therefore, the selection of the honeycomb network of these base stations is not ideal based on the measurement of the CRS.

(4) Beamforming with respect to CSR

Usually, the CRS is transmitted by the non-directional radio wave, so the result of the measurement of the CRS (receiving power/receiving quality) is the reception of the data signal transmitted by the directional beam. Power/receiving quality may vary greatly. In order to solve this, consider putting CRS Sent by a directional beam. Hereinafter, a specific example will be described with reference to Fig. 4 .

Fig. 4 is an explanatory diagram for explaining other relationships between the multiplication of the weight coefficients and the insertion of the reference signal. Referring to FIG. 4, the signal 92 corresponding to each antenna element 91 is multiplied by a complex multiplication coefficient 93 by the multiplier 94. Then, the transmission signal 92, which has been multiplied by the weight coefficient 93, is transmitted from the antenna element 91. Further, the DR-MS 95 is inserted before the multiplier 94, and is multiplied by the weighting coefficient 93 in the multiplier 94. Then, the DR-MS 95, which has been multiplied by the weight coefficient 93, is transmitted from the antenna element 91. Then, the CRS 96 is inserted before the multiplier 94, and is multiplied by the weighting coefficient 93 in the multiplier 94. Then, the CRS 96 multiplied by the weight coefficient 93 is transmitted from the antenna element 91. On the other hand, the usual CRS97 (and CSI-RS) is inserted after the multiplier 94. Then, the normal CRS 97 (and CSI-RS) is transmitted from the antenna element 91 without being multiplied by the weight coefficient 93.

<1.2. Technical issues>

Next, the technical problem described in the present embodiment will be described with reference to Figs. 5 and 6 .

For example, in the case where the number of directional beams (for example, directional beams of massive MIMO) formed at the same time is dynamically changed, the power allocated to each directional beam also dynamically changes, possibly resulting in ACG (Automatic Gain) for terminal devices Control) can't follow. As a result, the quality of the reception may be degraded. Hereinafter, a specific example will be described with reference to FIGS. 5 and 6 .

Fig. 5 is an explanatory diagram for explaining an example of the number of directional beams formed in each sub-frame. Referring to Figure 5, three sub-frames 31, 33, 35 relating to frequency bands (e.g., component carriers) are illustrated. For example, in the sub-frame 31, 150 directional beam systems are formed in the upper frequency band. Further, in the sub-frame 33, 15 directional beam systems are formed in the upper frequency band, and in the sub-frame 35, 60 directional beam systems are formed in the upper frequency band. Since the base station's transmission power has an upper limit, the more directional beams are formed in the sub-frame, the smaller the power allocated to each directional beam is, and is formed in the sub-frame. The less the directional beam, the greater the power allocated to each directional beam. Therefore, for example, the number of directional beams formed in the sub-frame 33 is 1/10 of the number of directional beams formed in the sub-frame 31, and thus is within the sub-frame 33. The power to which the directional beam is formed is increased by 10 dB. As a result, the reception power in the terminal device also becomes large. Moreover, for example, the number of directional beams formed in the sub-frame 35 is four times the number of directional beams formed in the sub-frame 33, and thus is within the sub-frame 33. The power to which the directional beam is formed is reduced by 6.02 dB. As a result, the reception power in the terminal device also becomes small.

Fig. 6 is an explanatory diagram for explaining an example of dynamic range and reception power. Referring to Fig. 6, a change in the received power 41 within the dynamic range in the terminal device is illustrated. For example, at time point 43, the directional beam is As a result, the number of rushes is reduced, and as a result, the reception power 41 in the terminal device is also rapidly increased. As a result, saturation occurs in the A/D (Analog-Digital) converter, and the terminal device may not be able to receive signals properly.

Therefore, the provision of a mechanism for obtaining a relatively good reception quality when the transmission by the directional beam is performed is required.

<<2. Summary of the system>>

Next, a schematic configuration of the system 1 described in the embodiment of the present disclosure will be described with reference to Fig. 7 . Fig. 7 is an explanatory diagram showing an example of a schematic configuration of the system 1 according to the embodiment of the present disclosure. Referring to Fig. 7, system 1 includes base station 100 and terminal device 200. System 1 is a system based on, for example, LTE, LTE-Advanced, or communication specifications that conform to these specifications.

(Base station 100)

The base station 100 performs wireless communication with the terminal device 200. For example, the base station 100 performs wireless communication with the terminal device 200 located in the cellular network 101 of the base station 100.

In particular, in the embodiment of the present disclosure, the base station 100 performs beamforming. For example, the beamforming is beamforming for massive MIMO. The beamforming system is also referred to as beamforming of massive MIMO, beamforming of free dimension MIMO, or 3-dimensional beamforming. Specifically, for example, the base station 100 is provided with a directional antenna that can be used for large-scale MIMO, and multiplies the weight set required for the directional antenna to the transmission signal for mass MIMO. Beamforming.

(Terminal device 200)

The terminal device 200 performs wireless communication with the base station 100. For example, when the terminal device 200 is located in the cellular network 101 of the base station 100, it performs wireless communication with the base station 100.

<<3. Composition of each device>>

Next, an example of the configuration of the base station 100 and the terminal device 200 will be described with reference to Figs. 8 and 9 .

<3.1. Composition of base station>

First, an example of the configuration of the base station 100 according to the embodiment of the present disclosure will be described with reference to Fig. 8 . Fig. 8 is a block diagram showing an example of the configuration of the base station 100 according to the embodiment of the present disclosure. Referring to Fig. 8, base station 100 includes antenna unit 110, wireless communication unit 120, network communication unit 130, memory unit 140, and processing unit 150.

(antenna portion 110)

The antenna unit 110 radiates the signal output from the wireless communication unit 120 in a space by radio waves. Further, the antenna unit 110 converts the radio wave of the space into a signal, and outputs the signal to the wireless communication unit 120.

For example, the antenna unit 110 includes a directional antenna. For example, the directional antenna is a pointer that can be used for massive MIMO. Antenna.

(Wireless communication unit 120)

The wireless communication unit 120 transmits and receives the signal. For example, the wireless communication unit 120 transmits a downlink signal to the terminal device 200 and receives the uplink signal from the terminal device 200.

(Network Communication Department 130)

The network communication unit 130 is for receiving information. For example, the network communication unit 130 transmits information to other nodes and receives information from other nodes. For example, the other nodes mentioned above include other base stations and core network nodes.

(memory unit 140)

The memory unit 140 is a program and data required to memorize the operation of the base station 100.

(Processing unit 150)

The processing unit 150 provides various functions of the base station 100. The processing unit 150 includes an information acquisition unit 151 and a control unit 153. Further, the processing unit 150 may further include other components other than these components. In other words, the processing unit 150 can perform operations other than the operations of these components.

Specific operations of the information acquisition unit 151 and the control unit 153 will be described in detail later.

<3.2. Composition of terminal device>

Next, an example of the configuration of the terminal device 200 according to the embodiment of the present disclosure will be described with reference to Fig. 9 . Fig. 9 is a block diagram showing an example of the configuration of the terminal device 200 according to the embodiment of the present disclosure. Referring to Fig. 9, terminal device 200 includes antenna unit 210, wireless communication unit 220, memory unit 230, and processing unit 240.

(antenna portion 210)

The antenna unit 210 radiates the signal output from the wireless communication unit 220 in a space by radio waves. Further, the antenna unit 210 converts the radio wave of the space into a signal, and outputs the signal to the wireless communication unit 220.

(Wireless communication unit 220)

The wireless communication unit 220 transmits and receives the signal. For example, the wireless communication unit 220 receives the downlink signal from the base station 100 and transmits the uplink signal to the base station 100.

(memory unit 230)

The memory unit 230 is a program and data required for the operation of the memory terminal device 200.

(Processing unit 240)

The processing unit 240 provides various functions of the terminal device 200. deal with The part 240 includes an information acquisition unit 241 and a control unit 243. Further, the processing unit 240 may further include other components than these components. In other words, the processing unit 240 can perform operations other than the operations of these components.

Specific operations of the information acquisition unit 241 and the control unit 243 will be described in detail later.

<<4. Technical Features>>

Next, the technical features described in the embodiments of the present disclosure will be described with reference to Figs. 10 to 14 .

In the embodiment of the present disclosure, the base station 100 (the information acquisition unit 151) acquires power-related information on the power corresponding to the number of directional beams formed in the sub-frame in the frequency band. Then, the base station 100 (control unit 153) notifies the terminal device of the power-related information in the downlink control information (Downlink Control Information: DCI) transmitted in the upper sub-frame in the upper frequency band. 200.

Further, in the embodiment of the present disclosure, the terminal device 200 (the information acquisition unit 241) obtains the above-described power-related information. Then, the terminal device 200 (control unit 243) sets the gain of the receiving amplifier of the terminal device 200 based on the above-described power-related information.

Thereby, for example, when transmitting with a directional beam, a relatively good reception quality can be obtained.

(1) Frequency band

For example, the upper frequency band is a component carrier (Component Carrier: CC).

(2) Power related information (a) Power bias

For example, the above-mentioned power-related information is information indicating the power offset corresponding to the number on the directional beam. For example, the power offset can also be said to be the amount of power reduction for each directional beam. Also, for example, the above directional beam is a directional beam of massive MIMO.

As an example, if the number of the directional beams is a predetermined number (for example, 15), the power offset is 0 dB, and if the number of directional beams is twice the number of the above, the power offset is The above power bias is -3.01dB. Furthermore, if the number of the directional beams is four times the number specified above, the power bias is given as above, and the power offset is -6.02 dB.

According to such a power offset, the terminal device 200 can easily know how much the received power is, and can perform appropriate gain setting.

For example, the power-related information is an index indicating the power offset. Hereinafter, a specific example will be described with reference to Fig. 10 .

Fig. 10 is an explanatory diagram for explaining an example of power related information indicating a power offset. Referring to Figure 10, the index and power offset are illustrated. Set. For example, a complex power offset is formulated as described above, and each index indicates one of the corresponding complex power offsets. For example, index 0 represents 0 dB and index 2 represents -6.02 dB. The power related information is one of the complex indexes, and indicates one of the complex power offsets. Further, information indicating the relationship between such an index and the power offset is held in the base station 100 and the terminal device 200.

(b) Other examples

The power-related information is also used to indicate information other than the power offset.

As an example, the above-mentioned power-related information system may also be information indicating that the number of the above-mentioned directional beams is recorded. In this case, the above-mentioned power-related information may also be an index indicating the number of the above-mentioned directional beams. Further, information indicating the relationship between the index and the number of directional beams (and information indicating the relationship between the number of directional beams and the power offset) may be held in the base station 100 and the terminal device 200.

Based on the number of such directional beams, the terminal device 200 can know to what extent the received power is, and can perform appropriate gain setting.

(3) Terminal device (a) Terminal device to which resources are allocated

For example, the terminal device 200 notifying the power-related information by the base station 100 is a terminal device to which the lower-chain resource in the upper sub-frame is allocated. Set. That is, the terminal device 200 is a terminal device that receives a downlink data signal in the upper subframe.

(b) Ability

For example, the terminal device 200 notifying the power-related information by the base station 100 is a device having the capability of setting the gain of the receiving amplifier based on the power-related information.

For example, the terminal device 200 (control unit 243) notifies the base station 100 of the capability information indicating that the terminal device 200 has the above-described capability. Then, the base station 100 (the information acquisition unit 151) obtains the above-mentioned ability information.

(4) Notice

As described above, the base station 100 (control unit 153) notifies the terminal device 200 of the power-related information recorded in the above-mentioned sub-frame in the upper frequency band.

For example, the above-described lower chain control information includes information indicating that the chain resources are allocated to the terminal device 200.

For example, the above-mentioned lower chain control information is information transmitted on a Physical Downlink Control Channel (PDCCH).

FIG. 11 is an explanatory diagram for explaining an example of a PDCCH to which downlink control information is transmitted. Referring to Fig. 11, the downlink resource of one subframe in the frequency band is illustrated. The frequency band is a component carrier. example For example, among the 14 symbols included in the subframe, the PDCCH is configured in the first three symbols, and the remaining 11 symbols are configured with PDSCH. The downlink control information is sent on the PDCCH.

By the notification of the power control information in the downlink control information, for example, the terminal device 200 becomes a gain setting of the receiving amplifier in a stage near the beginning of the subframe, and the receiving of the subframe is performed. Processing. As a result, the received signal can converge within the dynamic range of the A/D converter, and the transmitted downlink data signal can be appropriately received by the directional beam.

In addition, the above-mentioned entity downlink control channel may not be a normal PDCCH but an ePDCCH.

(5) Delivery of the downlink data signal

For example, the base station 100 transmits the downlink data signal to the terminal device 200 by the directional beam. More specifically, for example, the base station 100 transmits the downlink data signal to the terminal device 200 by the directional beam on the PDSCH. For example, a directional beam that is different with each terminal device 200 can be formed.

(6) Gain setting

As described above, the terminal device 200 (control unit 243) sets the gain of the receiving amplifier of the terminal device 200 based on the above-described power-related information. For example, the receiver amplifier is LNA (Low Noise Amplifier).

For example, if the terminal device 200 (control unit 243) lowers the power offset indicated by the power-related information, the gain setting value of the above-mentioned receiving amplifier is lowered, and the power offset indicated by the power-related information is recorded. If the setting is increased, the gain setting value of the above-mentioned receiving amplifier is increased.

Fig. 12 is an explanatory diagram for explaining a processing flow of gain setting of the LNA. Referring to Fig. 12, for example, the signal received by the antenna element is amplified by the LNA, converted into a digital signal by the A/D converter, and demodulated. Then, the power-related information contained in the downlink control information is obtained, and the gain setting of the LNA is performed based on the power-related information.

(7) Stopping of the delivery of the downlink information signal

For example, the base station 100 (control unit 153) stops the transmission of the downlink data signal within the predetermined time after the transmission of the lower chain control information in the upper sub-frame.

Thereby, for example, it is possible to prevent the deterioration of the reception quality due to the occurrence of noise accompanying the gain setting.

(a) the time specified

For example, the time specified in the above is the one symbol after the transmission of the lower chain control information in the above sub-frame. More specifically, for example, the above-mentioned time is the one symbol in the upper sub-frame immediately after the upper-lower entity control channel. Hereinafter, this point will be described with reference to FIG. Specific examples.

Fig. 13 is an explanatory diagram for explaining an example of stopping the transmission of the downlink data signal. Referring to Fig. 13, the downlink resources of one subframe in the frequency band are illustrated. As described with reference to FIG. 11, among the 14 symbols included in the subframe, the PDCCH is arranged in the first three symbols, and the downlink control information is transmitted on the PDCCH. For example, the base station 100 stops the transmission of the downlink data signal in the symbol 51 (ie, the fourth symbol) immediately after the PDCCH.

(b) Power allocation

The base station 100 (control unit 153) may also allocate the power required for the predetermined time as the power required for another time after the predetermined time in the upper frame, and allocate it. Hereinafter, a specific example will be described with reference to Fig. 14 .

Fig. 14 is an explanatory diagram for explaining an example of power after the stop of the transmission of the downlink data signal. Referring to Fig. 14, the downlink resources of one sub-frame in the frequency band are illustrated. As described with reference to FIG. 13, for example, the base station 100 stops the transmission of the downlink data signal in the symbol 51 (ie, the fourth symbol) immediately after the PDCCH. Then, the power required by the symbol 51 is assigned as the power required for the symbol 53 immediately after the symbol 51 (i.e., 10 symbols immediately after the symbol 51). As a result, the power of the symbol 53 is 11/10 times.

In addition, the power required by the symbol 51 can also be regarded as a 3-symbol immediately after the symbol 51 (that is, a symbol in the same time slot). It is allocated according to the power required. As a result, the power of the three symbols can be 4/3 times.

Thereby, for example, even if the transmission of the downlink data signal is stopped within the time specified in the above, the reception quality in another time can be improved. As a result, the reduction in communication speed can be suppressed.

(c) Cases with stops and cases without stops

The base station 100 (control unit 153) is the upper power-related information that is notified to the terminal device 200 in the upper frame in the upper frequency band, and is in the upper frequency band immediately before the upper frame. In the case where the other power-related information notified to the terminal device 200 in one sub-frame is different, the transmission of the downlink data signal may be stopped in the above-mentioned frequency band for the time specified in the above. Further, if the base station 100 (control unit 153) records that the power-related information is the same as the other power-related information, the base station 100 (control unit 153) may not stop the transmission of the downlink data signal within the time specified in the upper frequency band. News.

As an example, if the power control information is an index 4 indicating -12.04 dB and the other power control information is an index 0 indicating 0 dB, the base station 100 (control unit 153) may also be in the above The transmission of the downlink data signal is stopped in the frequency band for the time specified in the above. On the other hand, if both the power control information and the other power control information are both index 4 indicating -12.04 dB, the base station 100 (control unit 153) may also be in the upper frequency band for the time specified in the above. Do not stop the delivery of the downlink data signal. This is because the terminal device 200 The gain setting has not changed.

Thereby, for example, the frequency of stopping the downlink data signal can be further reduced.

Further, the base station 100 (control unit 153) may notify the terminal of the stop information indicating whether or not the transmission of the downlink data signal is stopped within the time period indicated in the upper frequency band, in the lower link control information. Device 200. Then, the terminal device 200 (the information acquisition unit 241) can also obtain the above-described stop information, and the terminal device 200 (control unit 243) can perform the reception in the upper frame in the upper frequency band based on the above-described stop information. Processing. Thereby, for example, the terminal device 200 can easily know whether or not to perform gain setting.

<<5. Process of processing>>

Next, an example of the processing described in the embodiment of the present disclosure will be described with reference to Fig. 15 . Fig. 15 is a flowchart showing an example of a schematic flow of processing described in the embodiment of the present disclosure.

The terminal device 200 notifies the base station 100 that the terminal device 200 is capability information having the capability of setting the gain of the receiving amplifier based on the power-related information (S401).

The base station 100 performs resource allocation in a subframe having a frequency band (S403).

The base station 100 obtains power-related information about the power corresponding to the number of directional beams formed in the upper subframe in the upper frequency band, and is indicated in the upper frequency band for the time specified in the above-mentioned frequency band. Whether to stop the stop information of the transmission of the downlink data signal (S405). For example, the base station 100 generates the power-related information and the stop information based on the result of the resource allocation.

The base station 100 notifies the terminal device 200 of the power-related information and the above-described stop information in the lower chain control information transmitted in the upper subframe in the upper frequency band (S407). In other words, the base station 100 is in the upper frequency band, and transmits the downlink control information including the power-related information and the stop information in the upper frame to the terminal device 200.

The terminal device 200 acquires the above-described power-related information and the above-described stop information (S409).

The terminal device 200 performs gain setting of the receiving amplifier of the terminal device 200 based on the above-described power-related information (S411).

The base station 100 transmits the downlink data signal to the terminal device 200 by the directional beam in the upper sub-frame in the upper frequency band (S413). For example, the directional beam is a directional beam of massive MIMO.

The terminal device 200 performs the reception processing in the upper subframe in the upper frequency band based on the above-described stop information (S415).

<<6. Modifications>>

Next, a modification of the embodiment of the present disclosure will be described.

According to a modification of the embodiment of the present disclosure, the base station 100 (control unit 153) performs resource allocation or power division. Arranging such that the power of each directional beam formed in the first sub-frame in the upper frequency band is formed in the second sub-frame immediately after the first sub-frame The difference in power per 1 directional beam does not exceed a predetermined threshold. That is, the base station 100 (control unit 153) does not significantly reduce the power per one directional beam between consecutive sub-frames.

For example, the number of directional beams is reduced from 150 to 15. In this case, for example, the base station 100 forms 150 directional beams in the first sub-frame and 15 directional beams in the second sub-frame. Here, for example, when the base station 100 is in power allocation, the power of each directional beam is not increased to 10 dB in the second subframe, but for example, across multiple subframes. The power of each directional beam is slowly increasing. As a result, the power of each directional beam does not increase significantly between successive sub-frames. Therefore, the AGC can follow the change in the received power and avoid saturation in the A/D converter.

For example, the number of directional beams is increased from 15 to 150. In this case, for example, the base station 100 forms 15 directional beams in the first sub-frame, and spans the plurality of sub-frames including the second sub-frame, so that the number of directional beams is gradually increased. . The base station 100 does not substantially increase the number of directional beams in the second subframe. As a result, the power of each directional beam is not greatly reduced between successive sub-frames. Therefore, the AGC can follow the change in the received power and avoid the degradation of the signal in the A/D converter.

Thereby, for example, when the terminal device that does not have the capability of setting the gain of the receiving amplifier based on the power-related information is to perform the signal of the downlink data, the degradation of the reception quality in the terminal device can be prevented.

Further, the base station 100 (control unit 153) may perform the assignment of the downlink resources of both the first subframe and the second subframe to the terminal device that does not have the above-mentioned capability. Resource allocation or power allocation such that the upper difference does not exceed the threshold specified above.

<<7. Application examples>>

The technology described in the present disclosure can be applied to various products. For example, the base station 100 may be implemented as any type of eNB (evolved Node B) such as a macro eNB or a small eNB. The small eNB may also be an eNB that covers a cellular network smaller than the macro hive network, such as a pico eNB, a micro eNB, or a home (femto) eNB. Alternatively, the base station 100 can be implemented as another type of base station such as a NodeB or a BTS (Base Transceiver Station). The base station 100 may include a main body (also referred to as a base station device) that controls wireless communication, and one or more RRHs (Remote Radio Heads) that are disposed at a place separated from the main body. Further, the base station function can be temporarily or semi-permanently executed by various types of terminals to be described later, and the base station 100 can be operated. Even at least a part of the components of the base station 100 can be implemented in a module required for the base station apparatus or the base station apparatus.

Further, for example, the terminal device 200 can also be implemented as A mobile terminal such as a smart phone, a tablet PC (Personal Computer), a notebook PC, a portable game terminal, a portable/key type mobile router, a mobile terminal such as a digital camera, or a driving navigation device. Further, the terminal device 200 may be implemented as a terminal (also referred to as an MTC (Machine Type Communication) terminal) that performs M2M (Machine To Machine) communication. Further, at least a part of the components of the terminal device 200 can be realized by a module (for example, an integrated circuit module including one wafer) mounted on the terminals.

<7.1. Application examples of base stations> (First application example)

Fig. 16 is a block diagram showing a first example of a schematic configuration of an eNB to which the technique described in the present disclosure is applicable. The eNB 800 has one or more antennas 810 and a base station device 820. Each antenna 810 and base station device 820 are connected to each other via an RF cable.

Each of the antennas 810 has a single or complex antenna element (e.g., a plurality of antenna elements constituting a MIMO antenna) that is used to receive the wireless signals of the base station apparatus 820. The eNB 800 has a complex antenna 810 as shown in FIG. 16, and the complex antenna 810 may also correspond to, for example, a complex frequency band used by the eNB 800, respectively. In addition, although FIG. 16 illustrates an example in which the eNB 800 has the complex antenna 810, the eNB 800 may have a single antenna 810.

The base station device 820 includes a controller 821, a memory 822, a network interface 823, and a wireless communication interface 825.

The controller 821 can be, for example, a CPU or a DSP, and causes various functions of the upper layer of the base station device 820 to operate. For example, the controller 821 generates a data packet from the data in the signal that has been processed by the wireless communication interface 825, and transmits the generated packet through the network interface 823. The controller 821 can also bundle the data from the complex baseband processor to generate a bundled packet, and transmit the generated bundled packet. Further, the controller 821 may have a function of performing Radio Resource Control, Radio Bearer Control, Mobility Management, Admission Control, or Scheduling. The logical function of control. Moreover, the control may be performed in cooperation with a neighboring eNB or a core network node. The memory 822 includes a RAM and a ROM, and stores programs to be executed by the controller 821, and various control data (such as a terminal list, transmission power data, and schedule data).

The network interface 823 is used to connect the base station device 820 to the communication interface required by the core network 824. The controller 821 can also communicate with the core network node or other eNB through the network interface 823. In this case, the eNB 800 and the core network node or other eNBs may also be connected to each other by a logical interface (for example, an S1 interface or an X2 interface). The network interface 823 can be a wired communication interface or can be a wireless communication interface for wireless backhaul. If the network interface 823 is a wireless communication interface, the network interface 823 can also use a frequency band higher than the frequency band used by the wireless communication interface 825 for wireless communication.

The wireless communication interface 825 supports any cellular communication method such as LTE (Long Term Evolution) or LTE-Advanced, and provides a wireless connection to the terminal located in the cellular network of the eNB 800 through the antenna 810. The wireless communication interface 825, typically, may include a baseband (BB) processor 826, an RF circuit 827, and the like. The BB processor 826 is, for example, capable of performing encoding/decoding, modulation/demodulation, and multiplexing/reverse multiplexing, and performs various layers (for example, L1, MAC (Medium Access Control), RLC (Radio Link Control), and PDCP ( Packet Data Convergence Protocol)) A variety of signal processing. The BB processor 826 can also replace the controller 821 with some or all of the above logic functions. The BB processor 826 can also be a module containing: a memory for controlling the communication control program, a processor for executing the program, and a related circuit. The function of the BB processor 826 can also be changed by upgrading the program. Further, the upper module may be a card or a blade that is inserted into a slot of the base station device 820, or may be a wafer that is mounted on the upper card or the upper blade. On the other hand, the RF circuit 827 may also include a mixer, a filter, an amplifier, etc., and transmit the wireless signal through the antenna 810.

The wireless communication interface 825 includes a complex BB processor 826 as shown in FIG. 16, and the complex BB processor 826 corresponds to, for example, a plurality of frequency bands used by the eNB 800. Further, the wireless communication interface 825 includes a plurality of RF circuits 827 as shown in FIG. 16, and the plurality of RF circuits 827 may also correspond to, for example, a plurality of antenna elements. In addition, although the wireless communication interface 825 is shown in FIG. 16 as an example including a plurality of BB processors 826 and a plurality of RF circuits 827, the wireless communication interface 825 may also include A single BB processor 826 or a single RF circuit 827.

The information acquisition unit 151 and the control unit 153 described with reference to FIG. 8 in the eNB 800 shown in FIG. 16 can also be implemented in the wireless communication interface 825. Alternatively, at least a part of these constituent elements may be implemented in the controller 821. As an example, the eNB 800 may also be equipped with a module including a part of the wireless communication interface 825 (for example, the BB processor 826) or all, and/or the controller 821, and the information acquisition unit 151 and the control unit 153 may be implemented in the module. . In this case, the upper module can also be used to make the processor operate as the program required by the information acquisition unit 151 and the control unit 153 (in other words, to enable the processor to execute the operations of the information acquisition unit 151 and the control unit 153). The program) is remembered and executed as the program. As another example, a program required to operate the processor as the information acquisition unit 151 and the control unit 153 may be installed in the eNB 800 and executed by the wireless communication interface 825 (for example, the BB processor 826) and/or the controller 821. The program. As described above, the eNB 800, the base station device 820, or the upper module may be provided by means of the device including the information acquisition unit 151 and the control unit 153, and the processor may be operated to become the information acquisition unit 151 and the control unit. 153 required program. Further, a readable recording medium on which the above program is recorded may be provided.

Further, in the eNB 800 shown in FIG. 16, the wireless communication unit 120 described with reference to FIG. 8 can also be implemented in the wireless communication interface 825 (for example, the RF circuit 827). Further, the antenna unit 110 can also be implemented in the antenna 810. Moreover, the network communication unit 130 can also be implemented in the controller 821 and/or the network interface 823.

(Second application example)

17 is a block diagram showing a second example of a schematic configuration of an eNB to which the technology described in the present disclosure is applicable. The eNB 830 has one or more antennas 840, a base station device 850, and an RRH 860. Each antenna 840 and RRH 860 are connected to each other through an RF cable. Further, the base station device 850 and the RRH 860 can be connected to each other by a high-speed line such as an optical fiber.

Each of the antennas 840 has a single or complex antenna element (e.g., a plurality of antenna elements that form a MIMO antenna) that is used to receive the radio signals of the RRH 860. The eNB 830 has a complex antenna 840 as shown in FIG. 17, and the complex antenna 840 may also correspond to, for example, a complex frequency band used by the eNB 830, respectively. In addition, although FIG. 17 illustrates an example in which the eNB 830 has the complex antenna 840, the eNB 830 may have a single antenna 840.

The base station device 850 includes a controller 851, a memory 852, a network interface 853, a wireless communication interface 855, and a connection interface 857. The controller 851, the memory 852, and the network interface 853 are the same as the controller 821, the memory 822, and the network interface 823 described with reference to FIG.

The wireless communication interface 855 supports any cellular communication mode such as LTE or LTE-Advanced, and provides a wireless connection to terminals located in the section corresponding to the RRH 860 through the RRH 860 and the antenna 840. The wireless communication interface 855, typically, may include a BB processor 856 or the like. BB processor 856, except through the connection interface 857 The RF circuit 864 of the RRH 860 is connected, and the rest is the same as the BB processor 826 described with reference to FIG. The wireless communication interface 855 includes a complex BB processor 856 as shown in FIG. 17, and the complex BB processor 856 corresponds to, for example, a plurality of frequency bands used by the eNB 830. In addition, although the wireless communication interface 855 is illustrated as an example including a plurality of BB processors 856 in FIG. 17, the wireless communication interface 855 may also include a single BB processor 856.

The connection interface 857 is the interface required to connect the base station device 850 (wireless communication interface 855) with the RRH 860. The connection interface 857 may also be a communication module required to connect the base station device 850 (wireless communication interface 855) with the upper high speed line of the RRH860.

Moreover, the RRH860 is provided with a connection interface 861 and a wireless communication interface 863.

The connection interface 861 is the interface required to connect the RRH 860 (wireless communication interface 863) with the base station device 850. The connection interface 861 can also be used for the communication module required for high-speed line communication.

The wireless communication interface 863 transmits wireless signals through the antenna 840. The wireless communication interface 863, typically, may include an RF circuit 864 or the like. The RF circuit 864 may also include a mixer, a filter, an amplifier, etc., and transmit the wireless signal through the antenna 840. The wireless communication interface 863 includes a plurality of RF circuits 864 as shown in FIG. 17, and the plurality of RF circuits 864 may also correspond to, for example, a plurality of antenna elements. In addition, although the wireless communication interface 863 is illustrated in FIG. 17 , it includes a plurality of RF circuits 864. For example, the wireless communication interface 863 may also include a single RF circuit 864.

The information acquisition unit 151 and the control unit 153 described with reference to FIG. 8 in the eNB 830 shown in FIG. 17 can also be implemented in the wireless communication interface 855 and/or the wireless communication interface 863. Alternatively, at least a part of these constituent elements may be implemented in the controller 851. As an example, the eNB 830 may also be equipped with a module including a part of the wireless communication interface 855 (for example, the BB processor 856) or all, and/or the controller 851, and the information acquisition unit 151 and the control unit 153 may be implemented in the module. . In this case, the upper module can also be used to make the processor operate as the program required by the information acquisition unit 151 and the control unit 153 (in other words, to enable the processor to execute the operations of the information acquisition unit 151 and the control unit 153). The program) is remembered and executed as the program. As another example, a program required to operate the processor as the information acquisition unit 151 and the control unit 153 may be installed in the eNB 830 and executed by the wireless communication interface 855 (for example, the BB processor 856) and/or the controller 851. The program. As described above, the eNB 830, the base station device 850, or the upper module may be provided by means of the device including the information acquisition unit 151 and the control unit 153, and the processor may be operated to become the information acquisition unit 151 and the control unit. 153 required program. Further, a readable recording medium on which the above program is recorded may be provided.

Further, in the eNB 830 shown in FIG. 17, for example, the wireless communication unit 120 described with reference to FIG. 8 may be implemented in the wireless communication interface 863 (for example, the RF circuit 864). Further, the antenna unit 110 can also be implemented in the antenna 840. Moreover, the network communication unit 130 can also be implemented In controller 851 and/or network interface 853.

<7.2. Related Application Examples of Terminal Devices> (First application example)

Fig. 18 is a block diagram showing an example of a schematic configuration of a smartphone 900 to which the technology described in the present disclosure is applicable. The smart phone 900 includes a processor 901, a memory 902, a storage 903, an external connection interface 904, a camera 906, a sensor 907, a microphone 908, an input device 909, a display device 910, a speaker 911, and a wireless communication interface 912. One or more antenna switches 915, one or more antennas 916, a bus bar 917, a battery 918, and an auxiliary controller 919.

The processor 901 can be, for example, a CPU or a SoC (System on Chip), and controls the functions of the application layer and other layers of the smart phone 900. The memory 902 includes a RAM and a ROM, and stores programs and data executed by the processor 901. The storage 903 may contain a memory medium such as a semiconductor memory or a hard disk. The external connection interface 904 may also be an interface required to connect an external device such as a memory card or a USB (Universal Serial Bus) device to the smart phone 900.

The camera 906 has an imaging element such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor), and generates an imaging image. The sensor 907 can include, for example, a sensor group of a positioning sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor. The microphone 908 converts the sound input to the smart phone 900 into an audio signal. Input device The 909 system includes, for example, a touch sensor, a key pad, a keyboard, a button, or a switch that detects a touch on the screen of the display device 910, and accepts an operation or information input from a user. The display device 910 has a screen such as a liquid crystal display (LCD) or an organic light emitting diode (OLED) display, and displays an output image of the smart phone 900. The speaker 911 converts the sound signal output from the smartphone 900 into sound.

The wireless communication interface 912 supports any cellular communication method such as LTE or LTE-Advanced to perform wireless communication. The wireless communication interface 912 typically includes a BB processor 913, an RF circuit 914, and the like. The BB processor 913 is, for example, capable of performing encoding/decoding, modulation/demodulation, and multiplexing/reverse multiplexing, and performs various signal processing required for wireless communication. On the other hand, the RF circuit 914 may include a mixer, a filter, an amplifier, and the like, and transmits a wireless signal through the antenna 916. The wireless communication interface 912 is typically a single-chip module that is condensed by the BB processor 913 and the RF circuit 914. The wireless communication interface 912 can also include a plurality of BB processors 913 and a plurality of RF circuits 914 as shown in FIG. In addition, although FIG. 18 illustrates an example in which the wireless communication interface 912 includes a plurality of BB processors 913 and a plurality of RF circuits 914, the wireless communication interface 912 may also include a single BB processor 913 or a single RF circuit 914.

In addition, the wireless communication interface 912 can support short-range wireless communication methods, proximity wireless communication methods, or wireless LAN (Local Area Network) methods, etc., in addition to the cellular communication mode. Can contain every wireless communication method BB processor 913 and RF circuit 914.

Each of the antenna switches 915 switches the connection destination of the antenna 916 between a plurality of circuits (for example, circuits used in different wireless communication methods) included in the wireless communication interface 912.

Each of the antennas 916 has a single or complex antenna element (e.g., a plurality of antenna elements that form a MIMO antenna) that is used to receive the wireless signals of the wireless communication interface 912. The smart phone 900 can also have a plurality of antennas 916 as shown in FIG. In addition, although FIG. 18 illustrates an example in which the smart phone 900 has a plurality of antennas 916, the smart phone 900 may have a single antenna 916.

Even the smart phone 900 can be equipped with an antenna 916 having a wireless communication method. In this case, the antenna switch 915 can be omitted from the configuration of the smartphone 900.

The bus 917 is a processor 901, a memory 902, a storage 903, an external connection interface 904, a camera 906, a sensor 907, a microphone 908, an input device 909, a display device 910, a speaker 911, a wireless communication interface 912, and The auxiliary controllers 919 are connected to each other. The battery 918 supplies power to each block of the smartphone 900 shown in Fig. 18 through a power supply line shown by a broken line in the figure. The auxiliary controller 919, for example, in the sleep mode, operates the minimum necessary function of the smartphone 900.

In the smartphone 900 shown in FIG. 18, the information acquisition unit 241 and the control unit 243 described with reference to FIG. 9 may be embodied in the wireless communication interface 912. Or at least one of these components The points can also be implemented in the processor 901 or the auxiliary controller 919. As an example, the smart phone 900 can also be equipped with a module including a part of the wireless communication interface 912 (for example, the BB processor 913) or all, the processor 901, and/or the auxiliary controller 919, and implemented in the module. The information acquisition unit 241 and the control unit 243. In this case, the upper module can also be used to operate the processor into the program required by the information acquisition unit 241 and the control unit 243 (in other words, to enable the processor to execute the operations of the information acquisition unit 241 and the control unit 243). The program) is remembered and executed as the program. As another example, a program required to operate the processor as the information acquisition unit 241 and the control unit 243 may be installed in the smart phone 900, and may be provided by the wireless communication interface 912 (for example, the BB processor 913) and the processor 901. And/or the auxiliary controller 919 to execute the program. As described above, the smart phone 900 or the upper module can be provided by means of the device having the information acquisition unit 241 and the control unit 243, and the processor can be operated to become the information acquisition unit 241 and the control unit 243. The required program. Further, a readable recording medium on which the above program is recorded may be provided.

Further, in the smartphone 900 shown in FIG. 18, for example, the wireless communication unit 220 described with reference to FIG. 9 can also be implemented in the wireless communication interface 912 (for example, the RF circuit 914). Further, the antenna unit 210 can also be implemented in the antenna 916.

(Second application example)

Fig. 19 is a block diagram showing an example of a schematic configuration of a driving navigation device 920 to which the technology described in the present disclosure is applied. Driving navigation device 920 A processor 921, a memory 922, a GPS (Global Positioning System) module 924, a sensor 925, a data interface 926, a content player 927, a memory medium interface 928, an input device 929, a display device 930, a speaker 931, Wireless communication interface 933, one or more antenna switches 936, one or more antennas 937 and battery 938.

The processor 921 can be, for example, a CPU or SoC, controlling the navigation functions and other functions of the driving navigation device 920. The memory 922 includes a RAM and a ROM, and stores programs and data executed by the processor 921.

The GPS module 924 uses the GPS signals received from the GPS satellites to determine the position (eg, latitude, longitude, and altitude) of the driving navigation device 920. The sensor 925 can include, for example, a sensor group of a gyro sensor, a geomagnetic sensor, and a barometric sensor. The data interface 926 is connected to the in-vehicle network 941 via a terminal (not shown), for example, and acquires data generated by the vehicle side such as vehicle speed data.

The content player 927 reproduces the content stored in a memory medium (for example, a CD or a DVD) to be inserted into the memory medium interface 928. The input device 929 includes, for example, a touch sensor, a button or a switch that detects a touch on the screen of the display device 930, and accepts an operation or information input from a user. The display device 930 has a screen such as an LCD or an OLED display, and displays an image of the navigation function or the content being reproduced. The speaker 931 outputs the sound of the navigation function or the content to be reproduced.

Wireless communication interface 933 supports LTE or LTE- Advanced cellular communication mode, such as Advanced, performs wireless communication. The wireless communication interface 933, typically, may include a BB processor 934, an RF circuit 935, and the like. The BB processor 934 is, for example, capable of performing encoding/decoding, modulation/demodulation, and multiplexing/reverse multiplexing, and performs various signal processing required for wireless communication. On the other hand, the RF circuit 935 may also include a mixer, a filter, an amplifier, etc., and transmit the wireless signal through the antenna 937. The wireless communication interface 933 is typically a single-chip module that is condensed by the BB processor 934 and the RF circuit 935. The wireless communication interface 933 may also include a plurality of BB processors 934 and a plurality of RF circuits 935 as shown in FIG. In addition, although the wireless communication interface 933 is illustrated as an example including a plurality of BB processors 934 and a plurality of RF circuits 935 in FIG. 19, the wireless communication interface 933 may also include a single BB processor 934 or a single RF circuit 935.

In addition, the wireless communication interface 933 can also support other types of wireless communication methods such as short-range wireless communication, proximity wireless communication, or wireless LAN, in addition to the cellular communication mode. In this case, each of the wireless communication interfaces may be included. BB processor 934 and RF circuit 935 of wireless communication mode.

Each of the antenna switches 936 switches the connection destination of the antenna 937 between a plurality of circuits (for example, circuits used in different wireless communication methods) included in the wireless communication interface 933.

Each of the antennas 937 has a single or multiple antenna elements (e.g., a plurality of antenna elements that form a MIMO antenna) that are used to receive wireless signals from the wireless communication interface 933. Driving navigation device 920 It is also possible to have a plurality of antennas 937 as shown in FIG. In addition, although FIG. 19 illustrates an example in which the navigation device 920 has a plurality of antennas 937, the driving navigation device 920 may have a single antenna 937.

Even the driving navigation device 920 can be provided with an antenna 937 for each wireless communication method. In this case, the antenna switch 936 can be omitted from the configuration of the driving navigation device 920.

The battery 938 is supplied with electric power to each block of the driving navigation device 920 shown in Fig. 19 through a power supply line shown by a broken line in the figure. Further, the battery 938 stores electric power supplied from the vehicle side.

The information acquisition unit 241 and the control unit 243 described with reference to FIG. 9 in the driving navigation device 920 shown in FIG. 19 may be installed in the wireless communication interface 933. Alternatively, at least a part of these constituent elements may be implemented in the processor 921. As an example, the driving navigation device 920 can also be equipped with a module including a part of the wireless communication interface 933 (for example, the BB processor 934) or all and/or the processor 921, and the information acquisition unit 241 and the control are implemented in the module. Department 243. In this case, the upper module can also be used to operate the processor into the program required by the information acquisition unit 241 and the control unit 243 (in other words, to enable the processor to execute the operations of the information acquisition unit 241 and the control unit 243). The program) is remembered and executed as the program. As another example, a program required to operate the processor as the information acquisition unit 241 and the control unit 243 may be installed in the navigation device 920, by a wireless communication interface 933 (eg, BB processor 934) and/or a processor. 921 to execute the program. As described above, it is also possible to use a device including the information acquisition unit 241 and the control unit 243. The driving navigation device 920 or the upper recording module provides a program necessary for the processor to operate as the information acquisition unit 241 and the control unit 243. Further, a readable recording medium on which the above program is recorded may be provided.

Further, in the driving navigation device 920 shown in FIG. 19, for example, the wireless communication unit 220 described with reference to FIG. 9 may be implemented in the wireless communication interface 933 (for example, the RF circuit 935). Further, the antenna unit 210 can also be implemented in the antenna 937.

Further, the technology described in the present disclosure may be implemented as an in-vehicle system (or vehicle) 940 including one or more blocks of the above-described driving navigation device 920 and an in-vehicle network 941 and a vehicle-side module 942. In other words, the in-vehicle system (or vehicle) 940 may be provided in a manner that the information acquisition unit 241 and the control unit 243 are provided. The vehicle side module 942 generates vehicle side data such as vehicle speed, engine speed, or failure information, and outputs the generated data to the in-vehicle network 941.

<<8. Summary>>

The devices and processes described in the present disclosure have been described so far with reference to FIGS. 5 to 19.

According to the embodiment of the present disclosure, the base station 100 includes: the information acquisition unit 151, which acquires power-related information on the power corresponding to the number of directional beams formed in the sub-frame in the frequency band; The control unit 153 notifies the terminal device 200 of the power-related information in the lower chain control information transmitted in the upper sub-frame in the upper frequency band.

Further, according to the embodiment of the present disclosure, the terminal device 200 includes the information acquisition unit 241 that acquires power-related information on the power corresponding to the number of directional beams formed in the sub-frame in the frequency band. And the power-related information is sent to the terminal device 200 by the base station 100 in the chain control information transmitted in the upper sub-frame in the upper frequency band; and the control unit 243 is based on the power-on relationship Information is used to set the gain of the receiving amplifier of the terminal device 200.

Thereby, for example, when transmitting with a directional beam, a relatively good reception quality can be obtained.

Although the preferred embodiment of the present disclosure has been described above with reference to the accompanying drawings, the present disclosure is of course not limited to the examples. As long as it is a practitioner, various changes or modifications are naturally conceivable within the scope of the patent scope, and these are of course also within the technical scope of the present disclosure, and this must be understood.

For example, although the system has been described as an example of a system in which LTE, LTE-Advanced, or a communication standard based on these, the present disclosure is not limited to the example. For example, the communication system can also be a system based on other communication specifications.

Further, the processing steps in the processing of the present specification are not necessarily performed in time series in accordance with the order described in the flowchart or the flowchart. For example, the processing steps in the processing may be performed in an order different from the order described in the flowchart or the flowchart, or may be performed in parallel.

Also, it can be used to make the device of the present specification (for example A processor (for example, a CPU, a DSP, etc.) included in a module required for a base station, a base station device, or a base station device, or a module required for a terminal device or a terminal device is a component of the above device (for example, The computer program required for the operation of the information acquisition department and the control unit (in other words, the computer program required for the operation of the components of the device to be recorded by the processor), and the recording medium for recording the computer program. A device having a memory for remembering a computer program and a device for executing one or more processors of the computer program (for example, a module required for a base station, a base station device, or a base station device, or a terminal device) Or a module required for the terminal device. Further, the method including the operation of the components of the device (for example, the information acquisition unit and the communication control unit) is also included in the technology described in the present disclosure.

Further, the effects described in the present specification are merely illustrative or exemplary, and are not intended to be construed as limiting. That is, the technology described in the present disclosure may also be used in addition to the above-mentioned effects, or may replace the above-mentioned effects, and achieve other effects that the practitioner can self-evident according to the description of the present specification.

Further, the following configurations are also within the technical scope of the present disclosure.

(1)

An apparatus includes: an acquisition unit that acquires power-related information on a power corresponding to a number of directional beams formed in a sub-frame in a frequency band; and a control unit that is preceded by a pre-recorded frequency band In the chain control information sent in the frame, the pre-recorded power related information is notified to the terminal Set.

(2)

The device as recited in (1) above, wherein the pre-recorded power-related information is information indicating a power offset corresponding to the number of the directional beam before the directional beam.

(3)

The device described in the above (1), wherein the pre-recorded power-related information is information indicating the number of points before the directional beam.

(4)

The device according to any one of the preceding claims, wherein the pre-recording terminal device is a terminal device to which a downlink resource in the pre-recorded sub-frame is allocated.

(5)

The device according to any one of the preceding claims, wherein the pre-recording terminal device is a device having the capability of setting the gain of the receiving amplifier based on the power-related information.

(6)

The device described in the above (5), wherein the pre-recording acquisition unit acquires, and indicates that the pre-recording terminal device is capability information having a pre-recording capability.

(7)

The device according to any one of the preceding claims, wherein the pre-recording control unit is in the pre-recorded frequency band, and the predetermined time after the transmission of the pre-recorded control information in the pre-recorded sub-frame Within, stop the delivery of the downlink data signal.

(8)

The device described in the above (7), wherein the predetermined time is the one symbol after the transmission of the pre-recorded control information in the pre-recorded sub-frame.

(9)

The device as recited in (8) above, wherein the pre-recorded downlink control information is information transmitted on the physical downlink control channel; the predetermined time in the pre-recorded sub-frame is immediately adjacent to the pre-record The physical lower chain controls the 1 symbol after the channel.

(10)

The device described in any one of the preceding paragraphs (7) to (9), wherein the pre-recording control unit is configured to use the power required for the predetermined time in the pre-recording frame as another time after the predetermined time in the pre-recording frame. The power required for time is allocated.

(11)

The device according to any one of the preceding claims, wherein the pre-recording control unit is a pre-recorded power-related information that is notified to the terminal device in the pre-recorded frame in the pre-recorded frequency band. In the case where the other power-related information notified to the terminal device in the other sub-frame immediately before the pre-recorded subframe is different in the pre-recorded frequency band, the downlink data signal is stopped in the pre-recorded frequency band for the time specified in the preceding note. The message of the pre-recording control department, if the power-related information is related to the previous work When the rate related information is the same, the transmission of the downlink data signal is not stopped in the pre-recorded frequency band for the time specified in the previous note.

(12)

The device described in the above (11), wherein the pre-recording control unit displays, in the pre-recording control information, whether or not the stop information of the transmission of the downlink data signal is stopped in the pre-recorded frequency band for a predetermined period of time. Notify to the predecessor terminal device.

(13)

The device according to any one of the preceding claims, wherein the pre-recording control unit performs resource allocation or power allocation so that each of the pre-recorded bands is formed in the first sub-frame. The difference between the power of the directional beam and the power of each directional beam formed in the second sub-frame immediately after the first sub-frame does not exceed the predetermined threshold.

(14)

The device according to the above (13), wherein the pre-recording control unit assigns a downlink resource of both the first sub-frame and the second sub-frame to the non-previous power connection information In the case of a terminal device that receives the gain setting capability of the amplifier, resource allocation or power allocation is performed such that the pre-difference does not exceed the threshold set by the pre-record.

(15)

A method comprising: obtaining, by a processor, a directional beam formed in a sub-frame in a frequency band The step of power-related information of the corresponding amount of power; and the step of notifying the pre-recorded power-related information to the terminal device in the chain control information transmitted in the pre-recorded sub-frame in the pre-recorded frequency band.

(16)

An apparatus includes: an acquisition unit that acquires power-related information about a power corresponding to a number of directional beams formed in a sub-frame in a frequency band, and the pre-recorded power-related information is in a pre-recorded frequency band The base station transmits the lower chain control information to the terminal device, and the control unit performs the gain setting of the receiving amplifier of the pre-recording terminal device based on the pre-recorded power-related information.

(17)

The device described in the above (16), wherein the pre-recording control unit notifies the pre-recording base station that the pre-recording terminal device has the capability information for performing the gain setting of the receiving amplifier based on the power-related information.

(18)

The device according to the above (16) or (17), wherein the pre-recording acquisition unit obtains whether or not the stop is obtained within a predetermined time after the transmission of the pre-log-down control information in the pre-recorded frame in the pre-recorded frequency band. The stop information of the transmission of the downlink data signal, and the stop information is notified to the predecessor terminal device by the pre-recorded base station in the pre-recorded downlink control information; the pre-record control unit performs the pre-recorded frequency band based on the pre-recorded stop information. The receiving process in the pre-recorded sub-frame.

(19)

The device described in any one of the preceding paragraphs, wherein the pre-recording device is a module required for the pre-recording terminal device or the pre-recording terminal device.

(20)

A method comprising: obtaining, by a processor, power-related information about a power corresponding to a number of directional beams formed in a sub-frame in a frequency band, and the pre-recorded power-related information is in a preamble band The step of notifying the terminal device by the base station among the transmitted chain control information in the pre-recorded sub-frame; and the step of setting the gain of the receiving amplifier of the pre-recording terminal device based on the pre-recorded power-related information.

(twenty one)

A program for causing a processor to perform: obtaining power-related information about a power corresponding to the number of directional beams formed in a sub-frame in a frequency band; and pre-recording in a pre-recorded frequency band The step of notifying the power-related information to the terminal device among the chain control information transmitted in the frame.

(twenty two)

A computer-readable recording medium for recording a program for causing a processor to perform: obtaining a directional beam formed in a sub-frame in a frequency band The step of power-related information of the corresponding amount of power; and the step of notifying the pre-recorded power-related information to the terminal device in the chain control information transmitted in the pre-recorded sub-frame in the pre-recorded frequency band.

(twenty three)

A program for causing a processor to perform: obtaining power-related information about the power corresponding to the number of directional beams formed in a sub-frame in a frequency band, and the pre-recorded power-related information is in the preamble band The step of notifying the terminal device by the base station among the chain control information transmitted in the pre-recorded sub-frame; and the step of setting the gain of the receiving amplifier of the pre-recording terminal device based on the pre-recorded power-related information .

(twenty four)

A computer-readable recording medium for recording a program for causing a processor to perform: obtaining power-related information about a power corresponding to the number of directional beams formed in a sub-frame in a frequency band, And the pre-recorded power-related information is a step of notifying the terminal device by the base station in the chain control information transmitted in the pre-recorded sub-frame in the pre-recorded frequency band; and performing the pre-recording terminal based on the pre-recorded power-related information The step of setting the gain of the receiver of the device.

Claims (20)

An apparatus includes: an acquisition unit that acquires power-related information on a power corresponding to a number of directional beams formed in a sub-frame in a frequency band; and a control unit that is preceded by a pre-recorded frequency band In the chain control information sent in the frame, the pre-recorded power related information is notified to the terminal device. The device of claim 1, wherein the pre-recorded power-related information is information indicating a power offset corresponding to the number of the directional beam before the directional beam. The device of claim 1, wherein the pre-recorded power-related information is information indicating a quantity before the directional beam. The device according to claim 1, wherein the predecessor terminal device is a terminal device to which a downlink resource in the preamble frame is allocated. The device of claim 1, wherein the pre-recording terminal device is a device having the capability of setting a gain of the receiving amplifier based on the power-related information. The device according to claim 5, wherein the pre-recording acquisition unit acquires, and indicates that the pre-recording terminal device is capability information having a pre-recording capability. The device according to claim 1, wherein the pre-recording control unit stops the transmission of the downlink data signal within a predetermined time period after the transmission of the pre-logging control information in the pre-recording frame in the pre-recorded frequency band. News. The device as recited in claim 7, wherein the time set in the preceding note is 1 after the message of the pre-recorded control information in the pre-recorded sub-frame Fu Yuan. The device as recited in claim 8, wherein the pre-log-down control information is information transmitted on the physical downlink control channel; the pre-recorded time is, immediately preceding the pre-recorded entity in the pre-recorded sub-frame The 1 symbol after the downlink control channel. The device according to claim 7, wherein the pre-recording control unit allocates the power required for the predetermined time in the pre-recorded frame as the power required for another time after the predetermined time in the pre-recorded sub-frame. . The device according to claim 7, wherein the pre-recording control unit is the pre-recorded power-related information notified to the terminal device in the pre-recorded frame in the pre-recorded frequency band, and is in the pre-recorded frequency band immediately before the pre-recording In the case where another power-related information notified to the terminal device in another subframe before the frame is different, the transmission of the downlink data signal is stopped in the pre-recorded frequency band for a predetermined period of time; the pre-recording control unit is If the pre-recorded power-related information is the same as the previous power-related information, the transmission of the downlink data signal is not stopped in the pre-recorded frequency band for the time specified in the preceding note. The device according to claim 11, wherein the pre-recording control unit displays the stop information indicating whether or not the transmission of the downlink data signal is stopped in the pre-recorded frequency band in the pre-recorded frequency band, and notifies the lower-chain control information in the pre-recording control information. Give the predecessor terminal device. The device of claim 1, wherein the pre-recording control unit performs resource allocation or power allocation such that the first frequency band is in the first The difference between the power of each directional beam formed in the sub-frame and the power of each directional beam formed in the second sub-frame immediately after the first sub-frame, Exceeded the threshold. The device according to claim 13, wherein the pre-recording control unit allocates a downlink resource of both the first sub-frame and the second sub-frame to the non-subsequent power-related information. In the case of a terminal device capable of gain setting of the amplifier, resource allocation or power allocation is performed such that the pre-difference does not exceed the threshold set by the pre-record. A method comprising: a step of obtaining, by a processor, power-related information about a power corresponding to a number of directional beams formed in a sub-frame in a frequency band; and a pre-recording frame in a pre-recorded frequency band The step of notifying the power-related information to the terminal device among the chain control information transmitted within the network. An apparatus includes: an acquisition unit that acquires power-related information about a power corresponding to a number of directional beams formed in a sub-frame in a frequency band, and the pre-recorded power-related information is in a pre-recorded frequency band The base station transmits the lower chain control information to the terminal device, and the control unit performs the gain setting of the receiving amplifier of the pre-recording terminal device based on the pre-recorded power-related information. The device according to claim 16, wherein the pre-recording control unit notifies the pre-recording that the pre-recording terminal device has capability information for performing the gain setting of the receiving amplifier based on the power-related information. Base station. The device according to claim 16, wherein the pre-recording acquisition unit acquires whether the downlink data signal is stopped within a predetermined time after the transmission of the pre-log-down control information in the pre-recorded frame in the pre-recorded frequency band. The stop information of the transmission, and the stop information is notified to the predecessor terminal device by the pre-recorded base station in the pre-recorded downlink control information; the pre-record control unit performs the pre-recording frame in the pre-recorded frequency band based on the pre-recorded stop information. Receiving processing within. The device according to claim 16, wherein the pre-recording device is a module required for the pre-recording terminal device or the pre-recording terminal device. A method comprising: obtaining, by a processor, power-related information about a power corresponding to a number of directional beams formed in a sub-frame in a frequency band, and the pre-recorded power-related information is in a preamble band The step of notifying the terminal device by the base station among the transmitted chain control information in the pre-recorded sub-frame; and the step of setting the gain of the receiving amplifier of the pre-recording terminal device based on the pre-recorded power-related information.