JP2022086590A - Base station and relay device - Google Patents

Abstract

To provide a base station capable of making a relay device perform the reuse of a radio resource between two radio links of the relay device.SOLUTION: A base station in an embodiment includes: an information acquisition unit that acquires a piece of resource information representing a radio resource that is assigned to a relay device for communication with the base station and a piece of reuse information relevant to the reuse of the radio resource for communication between the relay device and a communication device; and a communication processing unit that transmits the resource information and the reuse information to the relay device.SELECTED DRAWING: Figure 9

Description

The present disclosure relates to base stations and relay devices.

In recent years, mobile communication technology has been proposed in the 3GPP (3rd Generation Partnership Project) and standardized as a technical specification (TS). At present, LTE (Long Term Evolution) technology has matured, and 5G (5th Generation) technology is being studied.

In a mobile communication network, a relay node can relay a signal between a base station and a user equipment (UE). For example, Patent Document 1 discloses a technique for reusing radio resources of another relay node in a relay node.

Patent No. 4966858

However, as a result of detailed examination by the inventor, in the technique disclosed in Patent Document 1, the radio resource for communication between the base station and the relay station is the radio resource between the relay station and the UE. Since it is not reused for communication, the problem has been found that the base station cannot make the relay device perform such reuse.

An object of the present disclosure is to provide a base station and a relay device that allows a base station to recycle radio resources between two radio links of the relay device.

The base station according to one aspect of the present disclosure includes resource information indicating radio resources allocated to the relay device for communication with the base station and the radio resources for communication between the relay device and the communication device. It is provided with an information acquisition unit for acquiring reuse information regarding reuse of the above, and a communication processing unit for transmitting the resource information and the reuse information to the relay device.

The relay device according to one aspect of the present disclosure includes resource information indicating radio resources allocated to the relay device for communication with the base station and the radio resource for communication between the relay device and the communication device. It is provided with a first communication processing unit that receives the reuse information regarding the reuse of the above from the base station, and a second communication processing unit that communicates with the communication device based on the resource information and the reuse information. ..

According to the present disclosure, it is possible for a base station to allow a relay device to reuse radio resources between two radio links of the relay device. It should be noted that, according to the present disclosure, other effects may be produced in place of or in combination with the effect.

It is explanatory drawing which shows an example of the schematic structure of the system which concerns on embodiment of this disclosure. It is explanatory drawing which shows the example of the protocol stack of each apparatus which concerns on embodiment of this disclosure. It is explanatory drawing which shows the specific example of the communication apparatus which concerns on embodiment of this disclosure. It is explanatory drawing which shows the example of the arrangement of each apparatus which concerns on embodiment of this disclosure. It is a block diagram which shows the example of the schematic functional structure of the base station which concerns on embodiment of this disclosure. It is a block diagram which shows the example of the schematic hardware composition of the base station which concerns on embodiment of this disclosure. It is a block diagram which shows the example of the schematic functional structure of the relay device which concerns on embodiment of this disclosure. It is a block diagram which shows the example of the schematic hardware structure of the relay device which concerns on embodiment of this disclosure. It is explanatory drawing for demonstrating an example of reuse of a radio resource which concerns on embodiment of this disclosure. It is a sequence diagram for demonstrating the first example of the schematic flow of the process which concerns on embodiment of this disclosure. It is a sequence diagram for demonstrating the second example of the schematic flow of the process which concerns on embodiment of this disclosure. It is explanatory drawing for demonstrating the example of the reuse of the downlink resource which concerns on the 2nd modification of the Embodiment of this disclosure. It is explanatory drawing for demonstrating the example of the use of the free resource in the example of the reuse of the downlink resource which concerns on the 2nd modification of the Embodiment of this disclosure. It is explanatory drawing for demonstrating the example of the reuse of the uplink resource which concerns on the 2nd modification of the Embodiment of this disclosure. It is explanatory drawing for demonstrating the example of utilization of free resource in the example of reuse of uplink resource which concerns on the 2nd modification of embodiment of this disclosure. It is explanatory drawing for demonstrating the example of the unused region which concerns on the 3rd modification of the Embodiment of this disclosure.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the present specification and the drawings, elements that can be similarly described may be designated by the same reference numerals, so that duplicate description may be omitted.

The explanations are given in the following order.
1. 1. System configuration 2. Base station configuration 3. Configuration of relay device 4. Operation example 5. Modification example

<1. System configuration>
An example of the configuration of the system 1 according to the embodiment of the present disclosure will be described with reference to FIGS. 1 to 4. Referring to FIG. 1, system 1 includes a base station 100, a relay device 200 and a communication device 30.

For example, the system 1 is a system compliant with the technical specifications of the 3GPP (Third Generation Partnership Project). More specifically, for example, the system 1 is a 5G or NR (New Radio) TS compliant system. Of course, system 1 is not limited to this example.

(1) Communication between devices For example, the relay device 200 communicates with the base station 100 and the communication device 30. More specifically, for example, the relay device 200 communicates with the base station 100 on the first wireless link between the base station 100 and the relay device 200, and the second relay device 30 and the relay device 200 communicate with each other. Communicates with the communication device 30 on the wireless link of.

For example, communication over a radio link is performed using a radio access network (RAN) protocol stack and an antenna. In other words, the radio link is formed by the RAN protocol stack and antenna.

For example, as shown in FIG. 2, the relay device 200 uses the first protocol stack 13 of the RAN and the antenna 281 to communicate with the base station 100 on the first radio link. The base station 100 uses the protocol stack 11 of the RAN and the antenna 181 to communicate with the relay device 200 on the first radio link.

For example, as shown in FIG. 2, the relay device 200 uses the second protocol stack 15 of the RAN and the antenna 285 to communicate with the communication device 30 at the second radio link. The communication device 30 uses the protocol stack 17 of the RAN and the antenna 31 to communicate with the relay device 200 at the second radio link.

For example, each of the protocol stack 11 and the first protocol stack 13 includes a physical (: PHY) layer, a MAC (Medium Access Control) layer, and an RLC (Radio Link Control) layer. Each of the protocol stack 11 and the first protocol stack 13 may further include one or more higher layers. The one or more upper layers may include a PDCP (Packet Data Convergence Protocol) layer. The one or more upper layers may include a SDAP (Service Data Adaptation Protocol) layer in the user plane, or may include an RRC (Radio Resource Control) layer in the control plane.

The description of the second protocol stack 15 and the protocol stack 17 is the same as the description of the protocol stack 11 and the first protocol stack 13. Therefore, a duplicate description will be omitted here. As a matter of course, the layer included in each of the second protocol stack 15 and the protocol stack 17 may be different from the layer included in each of the protocol stack 11 and the first protocol stack 13.

Each of the antenna 181, the antenna 281 and the antenna 285 and the antenna 31 may include a transmitting antenna and a receiving antenna, or may be an antenna common to transmitting and receiving.

(2) Specific Example of Device As a specific example, for example, as shown in FIG. 3, the communication device 30 is a UE. Further, for example, the relay device 200 is also a UE. The base station 100 is, for example, gNB.

Further, as shown in FIG. 4, the relay device 200 may be an in-vehicle device mounted on the vehicle 20. More specifically, for example, the relay device 200 may be a V2X ECU (Electronic Control Unit). The communication device 30 may be located in the vehicle 20. In this case, the antenna 281 may be outside the vehicle 20 and the antenna 285 may be inside the vehicle 20.

Although a four-wheeled vehicle is described as the vehicle 20 in FIG. 4, the vehicle 20 may be a two-wheeled vehicle, a three-wheeled vehicle, or a railroad vehicle. Alternatively, the relay device 200 may be mounted on a moving body other than the vehicle 20 (for example, a flying object such as a drone), and the antenna of the relay device 200 may be present inside or outside the moving body. Alternatively, the relay device 200 may be installed in a building, and the antenna of the relay device 200 may be present inside or outside the building.

The antenna 281 and the antenna 285 may be provided in a moving body (for example, a vehicle 20 or a flying object) or a building on which the relay device 200 is mounted, instead of the relay device 200 itself. Alternatively, the relay device 200 may be a moving body (for example, a vehicle 20 or a flying body) or the building itself.

As a matter of course, the base station 100, the relay device 200, and the communication device 30 are not limited to the above-mentioned examples. A modification of this point will be described later.

<2. Base station configuration>
An example of the configuration of the base station 100 according to the embodiment of the present disclosure will be described with reference to FIGS. 5 and 6.

(1) Functional Configuration First, an example of the functional configuration of the base station 100 according to the embodiment of the present disclosure will be described with reference to FIG. Referring to FIG. 5, the base station 100 includes a wireless communication unit 110, a network communication unit 120, a storage unit 130, and a processing unit 140.

-Wireless communication unit 110
The wireless communication unit 110 wirelessly transmits and receives signals. For example, the wireless communication unit 110 receives a signal from another device and transmits a signal to the other device. For example, the other device is a relay device 200.

-Network communication unit 120
The network communication unit 120 receives a signal from the network to which the base station 100 is connected, and transmits the signal to the network. For example, the network is a backhaul.

-Memory unit 130
The storage unit 130 temporarily or permanently stores programs and parameters for the operation of the base station 100, as well as various data. The program includes one or more instructions for the operation of base station 100.

-Processing unit 140
The processing unit 140 provides various functions of the base station 100. The processing unit 140 includes an information acquisition unit 141 and a communication processing unit 143. The processing unit 140 may further include other components other than these components. That is, the processing unit 140 may perform operations other than the operations of these components. The specific operations of the information acquisition unit 141 and the communication processing unit 143 will be described in detail later.

For example, the processing unit 140 (specifically, the communication processing unit 143) processes the protocol stack 11 shown in FIG. 2 and communicates with another device (for example, the relay device 200) via the wireless communication unit 110. do. For example, the processing unit 140 communicates with another device connected to the network via the network communication unit 120.

(2) Hardware Configuration Next, with reference to FIG. 6, an example of the hardware configuration of the base station 100 according to the embodiment of the present disclosure will be described. Referring to FIG. 6, the base station 100 includes an antenna 181 and an RF (Radio Frequency) circuit 183, a processor 185, a network interface 187 and a memory 189.

For example, the processor 185 processes the protocol stack 11 shown in FIG. 2 and communicates with another device (eg, the relay device 200) via the antenna 181 and the RF circuit 183.

Processor 185 may process one or more layers other than the RAN protocol stack (ie, protocol stack 11). The one or more layers may include an internet layer, a transport layer and / or an application layer.

Processor 185 may be a single processor. Alternatively, the processor 185 may include a plurality of processors. As an example, the plurality of processors may include a baseband processor that processes the protocol stack 11 and an additional processor that processes the one or more layers.

The network interface 187 is, for example, a network adapter. The processor 185 communicates with a device connected to the network via the network interface 187.

The memory 189 stores a program executed by the processor 185, parameters related to the program, and various data. The memory 189 may be contained in the processor 185. The above program may be called an instruction.

The wireless communication unit 110 may be implemented by an antenna 181 and an RF circuit 183. The network communication unit 120 may be implemented by the network interface 187. The storage unit 130 may be implemented by the memory 189. The processing unit 140 may be implemented by the processor 185.

Considering the above hardware configuration, for example, the base station 100 includes a memory for storing a program and one or more processors for executing the program to operate the information acquisition unit 141 and the communication processing unit 143. .. For example, the memory is memory 189, and the one or more processors is processor 185. The above program is a program for causing a computer to execute the operations of the information acquisition unit 141 and the communication processing unit 143.

<3. Relay device configuration>
An example of the configuration of the relay device 200 according to the embodiment of the present disclosure will be described with reference to FIGS. 7 and 8.

(1) Functional Configuration First, an example of the functional configuration of the relay device 200 according to the embodiment of the present disclosure will be described with reference to FIG. 7. Referring to FIG. 7, the relay device 200 includes a first wireless communication unit 210, a second wireless communication unit 220, a network communication unit 230, a storage unit 240, and a processing unit 250.

-First wireless communication unit 210
The first wireless communication unit 210 wirelessly transmits and receives signals. For example, the first wireless communication unit 210 receives a signal from another device and transmits a signal to the other device. For example, the other device is the base station 100.

-Second wireless communication unit 220
The second wireless communication unit 220 wirelessly transmits and receives signals. For example, the second wireless communication unit 220 receives a signal from another device and transmits a signal to the other device. For example, the other device is the communication device 30.

-Network communication unit 230
The network communication unit 230 receives a signal from the network to which the relay device 200 is connected, and transmits the signal to the network.

As an example, as shown in FIG. 4, the relay device 200 may be an in-vehicle device mounted on the vehicle 20, and the network may be an in-vehicle LAN (Local Area Network). In this case, in addition to the relay device 200, various sensors (for example, running state sensors, etc.), various ECUs (for example, engine control ECU, operation support ECU, etc.), operation switches, display devices, and the like are included in the network. It may be connected.

-Memory unit 240
The storage unit 240 temporarily or permanently stores programs and parameters for the operation of the relay device 200, as well as various data. The program includes one or more instructions for the operation of the relay device 200.

-Processing unit 250
The processing unit 250 provides various functions of the relay device 200. The processing unit 250 includes a first communication processing unit 251 and a second communication processing unit 253. The processing unit 250 may further include other components other than these components. That is, the processing unit 250 may perform operations other than the operations of these components. The specific operations of the first communication processing unit 251 and the second communication processing unit 253 will be described in detail later.

For example, the processing unit 250 (specifically, the first communication processing unit 251) processes the first protocol stack 13 shown in FIG. 2 and another device (for example, the first communication processing unit 210) via the first wireless communication unit 210. , Base station 100). For example, the processing unit 250 (specifically, the second communication processing unit 253) processes the second protocol stack 15 shown in FIG. 2 and another device (for example, the second communication processing unit 220) via the second wireless communication unit 220. , Communicate with the communication device 30). For example, the processing unit 250 communicates with another device connected to the network via the network communication unit 230.

If the relay device 200 is not connected to the network, the relay device 200 may not include the network communication unit 230.

(2) Hardware Configuration Next, with reference to FIG. 8, an example of the hardware configuration of the relay device 200 according to the embodiment of the present disclosure will be described. Referring to FIG. 8, the relay device 200 includes an antenna 281, an RF circuit 283, an antenna 285, an RF circuit 287, a processor 289, a network interface 291 and a memory 293.

For example, the processor 289 processes the first protocol stack 13 shown in FIG. 2 and communicates with another device (eg, base station 100) via the antenna 281 and the RF circuit 283. Further, for example, the processor 289 processes the second protocol stack 15 shown in FIG. 2 and communicates with another device (eg, the communication device 30) via the antenna 285 and the RF circuit 287.

Processor 289 may process one or more layers other than the RAN protocol stack (ie, the first protocol stack 13 and the second protocol stack 15). The one or more layers may include an internet layer, a transport layer and / or an application layer.

The processor 289 may be a single processor. Alternatively, the processor 289 may include a plurality of processors. As an example, the plurality of processors include a first baseband processor that processes the first protocol stack 13, a second baseband processor that processes the second protocol stack 15, and one or more of the above. It may include additional processors that process the layers.

The network interface 291 is, for example, a network adapter. The processor 289 communicates with a device connected to the network via the network interface 291.

The memory 293 stores a program executed by the processor 289, parameters related to the program, and various data. The memory 293 may be contained in the processor 289. The above program may be called an instruction.

The first radio communication unit 210 may be implemented by the antenna 281 and the RF circuit 283. The second radio communication unit 220 may be implemented by an antenna 285 and an RF circuit 287. The network communication unit 230 may be implemented by the network interface 291. The storage unit 240 may be implemented by the memory 293. The processing unit 250 may be implemented by the processor 289.

If the relay device 200 is not connected to the network, the relay device 200 may not be provided with the network interface 291.

Considering the above hardware configuration, for example, the relay device 200 has a memory for storing a program and one or more that executes the program to operate the first communication processing unit 251 and the second communication processing unit 253. Equipped with a processor. For example, the memory is memory 293, and the one or more processors is processor 289. The above program is a program for causing a computer to execute the operations of the first communication processing unit 251 and the second communication processing unit 253.

<4. Operation example>
An example of the operation of the base station 100 and the relay device 200 according to the embodiment of the present disclosure will be described with reference to FIGS. 9 to 11.

The base station 100 (information acquisition unit 141) has resource information indicating radio resources allocated to the relay device 200 for communication with the base station 100, and the above-mentioned for communication between the relay device 200 and the communication device 30. Acquires reuse information regarding the reuse of wireless resources. The base station 100 (communication processing unit 143) transmits the resource information and the reuse information to the relay device 200.

The relay device 200 (first communication processing unit 251) receives the resource information and the reuse information from the base station 100. The relay device 200 (second communication processing unit 253) communicates with the communication device 30 based on the resource information and the reuse information.

This allows, for example, the base station 100 to allow the relay device 200 to reuse radio resources between the two radio links of the relay device 200. That is, the base station 100 can reuse the radio resources allocated to the relay device 200 for communication with the base station 100 to the relay device 200 for communication between the relay device 200 and the communication device 30.

(1) Radio resource For example, the radio resource is a downlink resource allocated to the relay device 200 for reception from the base station 100. This allows, for example, the reuse of downlink resources.

Alternatively, the radio resource may be an uplink resource assigned to the relay device 200 for transmission to the base station 100. This allows, for example, reuse of uplink resources.

(2) Reuse of radio resources For example, the reuse of the radio resources is to reuse at least a part of the radio resources for communication between the relay device 200 and the communication device 30.

For example, the relay device 200 (first communication processing unit 251) communicates with the base station 100 by using the radio resource based on the resource information. The relay device 200 (second communication processing unit 253) reuses at least a part of the radio resource and communicates with the communication device 30 based on the resource information and the reuse information.

This allows, for example, the relay device 200 to flexibly reuse the required amount of resources.

-In the case of a downlink resource As described above, for example, the radio resource is the downlink resource, and the relay device 200 (first communication processing unit 251) uses the downlink resource to make the base station 100. Receive data from. In this case, the relay device 200 (second communication processing unit 253) reuses the downlink resource and transmits data to the communication device 30.

The reuse of the downlink resource may be performed when the interference from the second radio link in the relay device 200 to the first radio link is small. For example, the interference may be measured by the relay device 200, and it may be determined whether the reuse is possible based on the result of the measurement of the interference. This determination may be made by the base station 100 or by the relay device 200. The base station 100 may generate the reuse information according to the result of such a determination.

-In the case of an uplink resource Alternatively, the wireless resource may be the uplink resource, and the relay device 200 (first communication processing unit 251) uses the uplink resource to send data to the base station 100. May be sent. In this case, the relay device 200 (second communication processing unit 253) may reuse the uplink resource to receive data from the communication device 30.

The reuse of the uplink resource may be performed when the interference from the first radio link in the relay device 200 to the second radio link is small. For example, the interference may be measured by the relay device 200, and it may be determined whether the reuse is possible based on the result of the measurement of the interference. This determination may be made by the base station 100 or by the relay device 200. The base station 100 may generate the reuse information according to the result of such a determination.

(3) Resource information For example, the resource information includes frequency resource information indicating a resource of a frequency domain and time resource information indicating a resource of a time domain. For example, the frequency resource information indicates a set of resource blocks. For example, the time resource information indicates a start symbol, the number of symbols, and the like.

(4) Reuse information For example, the reuse information indicates whether or not to reuse the radio resource for communication between the relay device 200 and the communication device 30. More specifically, for example, the reuse information is 1-bit information (for example, a flag) indicating whether or not to reuse the radio resource for communication between the relay device 200 and the communication device 30. Is. As an example, when the reuse information is 1, it indicates that the radio resource is reused, and when it is 0, it indicates that the radio resource is not reused.

Alternatively, the reuse information may indicate that the radio resource is reused for communication between the relay device 200 and the communication device 30. Specifically, the reuse information may be predetermined information (for example, a predetermined value), and the relay device 200 receives the reuse information from the relay device 200 and the communication device 30. The radio resources may be reused for communication between them. The relay device 200 may not reuse the radio resource when the reuse information is not received.

With such reuse information, for example, it becomes possible to easily control the reuse of radio resources by the relay device 200.

(5) Transmission of resource information and reuse information For example, the base station 100 (communication processing unit 143) converts the downlink control information (DCI) including the resource information and the reuse information into a physical downlink control channel (PDCCH). Is transmitted to the relay device 200. As a result, for example, the relay device 200 can dynamically reuse wireless resources.

(6) Specific Example A specific example will be described with reference to FIG. Communication between the base station 100 and the relay device 200 (that is, communication on the first radio link) and communication between the relay device 200 and the communication device 30 (that is, communication on the second radio link), respectively. , Slots 41, 43 and 45 are shown in the time direction and frequency blocks are shown in the frequency direction. The frequency block is common to both communications. For example, the base station 100 (communication processing unit 143) transmits the control information 51 including the resource information and the reuse information to the relay device 200 in the slot 41. The control information is, for example, DCI. The resource information indicates a radio resource 55 assigned to the relay device 200 for communication with the base station 100. Further, the reuse information indicates that the radio resource 55 is reused for communication between the relay device 200 and the communication device 30. Therefore, the relay device 200 (second communication processing unit 253) transmits the control information 53 including the resource information indicating the radio resource 55 to the communication device 30. The control information is, for example, side link control information (SCI). The relay device 200 (first communication processing unit 251) communicates with the base station 100 using the radio resource 55, and the relay device 200 (second communication processing unit 253) communicates using the radio resource 55. It also communicates with the device 30.

For example, the radio resource 55 is a downlink resource. Alternatively, the radio resource 55 may be an uplink resource.

(7) Process Flow An example of the process according to the embodiment of the present disclosure will be described with reference to FIGS. 10 and 11.

-Downlink example With reference to FIG. 10, a downlink example will be described as a first example.

The base station 100 relates to resource information indicating radio resources allocated to the relay device 200 for communication with the base station 100 and reuse of the radio resources for communication between the relay device 200 and the communication device 30. Get reuse information. The base station 100 transmits the resource information and the reuse information to the relay device 200 (S410). The relay device 200 receives the resource information and the reuse information. In this example, the radio resource is a downlink resource.

The relay device 200 transmits resource information indicating the radio resource to the communication device 30 (S420). The communication device 30 receives the resource information.

The base station 100 uses the radio resource to transmit data to the relay device 200 (S430), and the relay device 200 uses the radio resource to receive the data from the base station 100.

Further, the relay device 200 transmits data to the communication device 30 using the wireless resource (S440), and the communication device 30 receives the data from the relay device 200 using the wireless resource.

-Uplink example With reference to FIG. 11, an uplink example will be described as a second example.

The base station 100 relates to resource information indicating radio resources allocated to the relay device 200 for communication with the base station 100 and reuse of the radio resources for communication between the relay device 200 and the communication device 30. Get reuse information. The base station 100 transmits the resource information and the reuse information to the relay device 200 (S460). The relay device 200 receives the resource information and the reuse information. In this example, the radio resource is an uplink resource.

The relay device 200 transmits resource information indicating the radio resource to the communication device 30 (S470). The communication device 30 receives the resource information.

The relay device 200 uses the radio resource to transmit data to the base station 100 (S480), and the base station 100 uses the radio resource to receive the data from the relay device 200.

Further, the communication device 30 uses the wireless resource to transmit data to the relay device 200 (S490), and the relay device 200 uses the wireless resource to receive the data from the communication device 30.

<5. Modification example>
The first to fourth modifications of the embodiment of the present disclosure will be described with reference to FIGS. 12 to 16.

(1) First Modification Example In the above-described example of the embodiment of the present disclosure, the base station 100 (communication processing unit 143) transmits DCI including the resource information and the reuse information to the relay device 200 on the PDCCH. .. However, the embodiments of the present disclosure are not limited to this example.

As a first modification of the embodiment of the present disclosure, for example, the base station 100 (communication processing unit 143) transmits a radio resource control (RRC) message including the resource information and the reuse information to the relay device 200. You may. This makes it possible, for example, to avoid changes in signaling at the physical layer. In addition, radio resources can be reused in SPS (Semi-Persistent Scheduling) or Controlled Grant resource allocation.

As a first modification of the embodiment of the present disclosure, both DCI and RRC messages may be used for transmission of the resource information and the reuse information. As an example, the base station 100 (communication processing unit 143) may transmit an RRC message including the resource information to the relay device 200, and may transmit a DCI including the reuse information to the relay device 200. As another example, the base station 100 (communication processing unit 143) may transmit the DCI including the resource information to the relay device 200, and may transmit the RRC message including the reuse information to the relay device 200.

Alternatively, a MAC control element may be used instead of DCI or RRC.

(2) Second Modification Example As a second modification of the embodiment of the present disclosure, the radio resource allocated to the relay device 200 for communication with the base station 100 is the base station 100 in a plurality of slots. It may be a radio resource allocated to the relay device 200 for communication. In this case, the reuse of the radio resource is to reuse the radio resource for communication between the relay device 200 and the communication device 30 in at least one of the plurality of slots. You may. That is, the relay device 200 (second communication processing unit 253) may communicate with the communication device 30 in at least one of the plurality of slots based on the resource information and the reuse information.

This allows, for example, reuse of radio resources across multiple slots.

-Case of downlink resource The radio resource may be a downlink resource assigned to the relay device 200 for reception from the base station 100.

--Transmission from the base station 100 to the relay device 200 The base station 100 (communication processing unit 143) transmits data to the communication device 30 in the slots other than the last one or more slots among the plurality of slots. It may be transmitted to the relay device 200, and the data may not be transmitted to the relay device 200 in the last one or more slots.

The relay device 200 (first communication processing unit 251) may receive data to the communication device 30 from the base station 100 in the slots other than the last one or more slots among the plurality of slots. It is not necessary to receive the data from the base station 100 in the last one or more slots.

--Transmission from the relay device 200 to the communication device 30 The relay device 200 (second communication processing unit 253) transmits the data to the communication device 30 in the first one or more slots among the plurality of slots. It may not be necessary, and the data may be transmitted to the communication device 30 in the slots other than the first one or more slots among the plurality of slots. That is, the slots other than the first one or more of the plurality of slots may be slots used for transmitting the data from the relay device 200 to the communication device 30.

--Specific Example A specific example will be described with reference to FIG. Slots 61 to 67 are shown in the time direction and frequency blocks are shown in the frequency direction for each of the communication between the base station 100 and the relay device 200 and the communication between the relay device 200 and the communication device 30. There is. The frequency block is common to both communications.

For example, the base station 100 (communication processing unit 143) transmits the control information 71 including the resource information and the reuse information to the relay device 200 in the slot 61. The control information is, for example, DCI. The resource information indicates downlink resources 75 to 78 assigned to the relay device 200 for communication with the base station 100. Further, the reuse information indicates that the downlink resources 75 to 78 are reused for communication between the relay device 200 and the communication device 30.

The relay device 200 (second communication processing unit 253) transmits the control information 72 including the resource information indicating the downlink resources 75 to 78 (or the downlink resources 76 to 78) to the communication device 30. The control information is, for example, SCI.

The base station 100 (communication processing unit 143) uses the downlink resources 75 to 77 to transmit data to the communication device 30 to the relay device 200, and the relay device 200 (first communication processing unit 251) goes down. The above data is received from the base station 100 using the link resources 75 to 77. The relay device 200 (second communication processing unit 253) reuses the downlink resources 76 to 78 and transmits the above data to the communication device 30.

More specifically, the data transmitted from the base station 100 to the relay device 200 using the downlink resource 75 is transmitted from the relay device 200 to the communication device 30 by reusing the downlink resource 76. The data transmitted from the base station 100 to the relay device 200 using the downlink resource 76 is transmitted from the relay device 200 to the communication device 30 by reusing the downlink resource 77. The data transmitted from the base station 100 to the relay device 200 using the downlink resource 77 is transmitted from the relay device 200 to the communication device 30 by reusing the downlink resource 78.

In the example of FIG. 12, the downlink resource 75 in the slot 63 is not reused for transmission from the relay device 200 to the communication device 30, and the downlink resource 78 in the slot 66 is the relay device 200 from the base station 100. Not used for sending to.

By transmitting the data as described above, for example, a series of data can be transmitted from the base station 100 to the communication device 30 via the relay device 200.

--Transmission to other communication devices The base station 100 (communication processing unit 143) relays data to other communication devices in the last one or more slots (for example, slot 66 in FIG. 12). May be sent to. The relay device 200 (first communication processing unit 251) may receive the data from the base station 100 in the last one or more slots.

A specific example will be described with reference to FIG. The example of FIG. 13 is obtained by further adding the transmission of data to the communication device 33 to the example of FIG. In particular, the base station 100 (communication processing unit 143) uses the downlink resource 78 to transmit data to the communication device 33 to the relay device 200 in the slot 66. In this example, the base station 100 (communication processing unit 143) transmits the control information 73 to the relay device 200 in the slot 64, and the control information 73 includes the resource information indicating the downlink resources 79 to 80 and the downlink resource. Includes reuse information indicating that 79-80 will be reused. Further, the relay device 200 (second communication processing unit 253) transmits the control information 74 including the resource information indicating the downlink resources 79 to 80 to the communication device 33. The data transmitted from the base station 100 to the relay device 200 using the downlink resource 78 is transmitted from the relay device 200 to the communication device 33 by reusing the downlink resource 79. The data transmitted from the base station 100 to the relay device 200 using the downlink resource 79 is transmitted from the relay device 200 to the communication device 33 by reusing the downlink resource 80.

Thereby, for example, the radio resource can be used more effectively.

Similarly, the relay device 200 (second communication processing unit 253) transmits data to the other communication device to the other communication device in the first one or more slots (for example, slot 63 in FIG. 12). You may. Specifically, in the example of FIG. 12, the relay device 200 reuses the downlink resource 75 in the slot 63 to transfer data to another communication device (for example, communication device 33) to the other communication device. You may send it. Thereby, for example, the radio resource can be used more effectively.

In FIGS. 12 and 13, the downlink resources 75 to 80 assigned to the relay device 200 are resources of continuous slots, but the downlink resource according to the second modification is not limited to this example. For example, the downlink resources 75 to 78 assigned to the relay device 200 may be resources of non-consecutive slots.

-Case of uplink resource The radio resource may be an uplink resource assigned to the relay device 200 for transmission to the base station 100.

--Transmission from the communication device 30 to the relay device 200 The relay device 200 (second communication processing unit 253) is from the communication device 30 in the slots other than the last one or more slots among the plurality of slots. The data may be received from the communication device 30, and the data may not be received from the communication device 30 in the last one or more slots. That is, among the plurality of slots, the slots other than the last one or more slots are slots used for transmitting data from the communication device 30 from the communication device 30 to the relay device 200. May be good.

--Transmission from the relay device 200 to the base station 100 The relay device 200 (first communication processing unit 251) transmits the data to the base station 100 in the first one or more slots among the plurality of slots. It may not be necessary, and the data may be transmitted to the base station 100 in the slots other than the first one or more slots among the plurality of slots.

The base station 100 (communication processing unit 143) may receive the data from the relay device 200 in the slots other than the first one or more slots among the plurality of slots, and the first one or more of the slots may be received from the relay device 200. It is not necessary to receive the above data from the relay device 200 in the slot of.

--Specific Example A specific example will be described with reference to FIG. Slots 61 to 67 are shown in the time direction and frequency blocks are shown in the frequency direction for each of the communication between the base station 100 and the relay device 200 and the communication between the relay device 200 and the communication device 30. There is. The frequency block is common to both communications.

For example, the base station 100 (communication processing unit 143) transmits the control information 81 including the resource information and the reuse information to the relay device 200 in the slot 61. The control information is, for example, DCI. The resource information indicates uplink resources 85 to 89 assigned to the relay device 200 for communication with the base station 100. Further, the reuse information indicates that the uplink resources 85 to 89 are reused for communication between the relay device 200 and the communication device 30.

The relay device 200 (second communication processing unit 253) transmits the control information 82 including the resource information indicating the uplink resources 85 to 89 (or the uplink resources 85 to 87) to the communication device 30. The control information is, for example, SCI.

The communication device 30 reuses the uplink resources 85 to 87, transmits data from the communication device 30 to the relay device 200, and the relay device 200 (second communication processing unit 253) uses the uplink resources 85 to 87. Is reused to receive the above data from the communication device 30. The relay device 200 (first communication processing unit 251) transmits the above data to the base station 100 using the uplink resources 87 to 89. The base station 100 (communication processing unit 143) receives the above data from the relay device 200 using the uplink resources 87 to 89.

More specifically, the data transmitted from the communication device 30 to the relay device 200 by reusing the uplink resource 85 is transmitted from the relay device 200 to the base station 100 using the uplink resource 87. The data transmitted from the communication device 30 to the relay device 200 by reusing the uplink resource 86 is transmitted from the relay device 200 to the base station 100 using the uplink resource 88. The data transmitted from the communication device 30 to the relay device 200 by reusing the uplink resource 87 is transmitted from the relay device 200 to the base station 100 using the uplink resource 89.

In the example of FIG. 14, the uplink resource 85 in the slot 63 and the uplink resource 86 in the slot 64 are not used for transmission from the relay device 200 to the base station 100. Further, the uplink resource 88 in the slot 66 and the uplink resource 89 in the slot 67 are not reused for transmission from the communication device 30 to the relay device 200.

By transmitting the data as described above, for example, a series of data can be transmitted from the communication device 30 to the base station 100 via the relay device 200.

In the example of FIG. 14, the control information 81 may be transmitted in another frequency band, particularly in the case of FDD (Frequency Division Duplex).

--Transmission from another communication device The other communication device transmits data from the other communication device to the relay device 200 in the last one or more slots (for example, slots 66 and 67 in FIG. 14). You may. The relay device 200 (second communication processing unit 253) may receive the data from the other communication device in the last one or more slots.

A specific example will be described with reference to FIG. The example of FIG. 15 further adds the transmission of data from the communication device 33 to the example of FIG. In particular, the communication device 33 reuses the uplink resource 88 in the slot 66 to transmit data from the communication device 33 to the relay device 200. In this example, the base station 100 (communication processing unit 143) transmits the control information 83 to the relay device 200 in the slot 64, and the control information 83 includes resource information indicating the uplink resource 90. Further, the relay device 200 (second communication processing unit 253) transmits the control information 84 including the resource information indicating the uplink resource 88 to the communication device 33. The data transmitted from the communication device 33 to the relay device 200 by reusing the uplink resource 88 is transmitted from the relay device 200 to the base station 100 using the uplink resource 90.

Thereby, for example, the radio resource can be used more effectively.

In the example of FIG. 15, the control information 81 and the control information 83 may be transmitted in other frequency bands, especially in the case of FDD.

Similarly, the relay device 200 (first communication processing unit 251) transmits data from other communication devices to the base station 100 in the first one or more slots (for example, slots 63 and 64 in FIG. 14). You may. The base station 100 (communication processing unit 143) may receive the data from the relay device 200 in the first one or more slots. Specifically, in the example of FIG. 14, in the slot 63, the relay device 200 uses the uplink resource 85 to transmit data from another communication device (for example, the communication device 33) to the base station 100. Also, the base station 100 may use the uplink resource 85 to receive the data from the relay device 200. Further, in the slot 64, the relay device 200 may use the uplink resource 86 to transmit data from another communication device (for example, the communication device 33) to the base station 100, and the base station 100 is up. The data may be received from the relay device 200 using the link resource 86. Thereby, for example, the radio resource can be used more effectively.

In FIGS. 14 and 15, the uplink resources 85 to 90 assigned to the relay device 200 are resources of continuous slots, but the uplink resource according to the second modification is not limited to this example. For example, the uplink resources 85 to 90 assigned to the relay device 200 may be resources of non-consecutive slots.

-Reuse information The reuse information may include slot information about the first one or more slots or the last one or more slots.

The slot information indicates that the radio resource is not used in one radio link in the first one or more slots, or that the radio resource is not used in one radio link in the last one or more slots. It may be shown explicitly or implicitly.

The slot information may indicate the number of slots contained in the first one or more slots, or the number of slots contained in the last one or more slots. In the example of FIG. 12, the slot information may indicate one slot as the number of slots. In the example of FIG. 14, the slot information may indicate 2 slots as the number of slots. The number of slots can be said to be a transfer delay.

This makes it possible to control the reuse of radio resources more flexibly, for example.

(3) Third Modification Example As a third modification of the embodiment of the present disclosure, the radio resource communicates with a first region not used for communication between the base station 100 and the relay device 200, and with the relay device 200. It may include at least one of the second areas that are not used for communication with the device 30.

The relay device 200 (first communication processing unit 251) does not have to use the first area of the radio resources for communication with the base station 100. The relay device 200 (second communication processing unit 253) does not have to use the second area of the radio resources for communication with the communication device 30.

This makes it possible, for example, to measure interference between two radio links of the relay device 200.

For example, the first region and the second region may be regions of specific symbols, respectively.

A specific example will be described with reference to FIG. The radio resource 55 includes an area 93 that is not used for communication between the base station 100 and the relay device 200. Further, the radio resource 55 includes an area 95 that is not reused for communication between the relay device 200 and the communication device 30. As an example, the radio resource 55 has 10 symbols in the time domain, the area 93 is the area of the first symbol, and the area 95 is the area of the fifth symbol.

-Case of downlink resource The radio resource 55 may be a downlink resource. In this case, the base station 100 may use the radio resource 55 to transmit data to the relay device 200. However, the base station 100 does not have to use the area 93 of the radio resource 55. Further, the relay device 200 may reuse the wireless resource 55 to transmit data to the communication device 30. However, the relay device 200 does not have to reuse the area 95 of the radio resource 55.

The relay device 200 (first communication processing unit 251) may perform measurement in the area 93. Specifically, even if the relay device 200 (first communication processing unit 251) receives the signal transmitted by the relay device 200 (second communication processing unit 253) in the area 93 and performs measurement based on the signal. good. This makes it possible, for example, for the relay device 200 to know the self-interference from the second radio link in the relay device 200 to the first radio link. Further, it is possible to determine the reuse of the downlink resource based on the self-interference.

The communication device 30 may make measurements in the region 95. Specifically, the base station 100 may transmit a reference signal in the area 95, and the communication device 30 may receive the reference signal in the area 95 and perform measurement based on the reference signal. This makes it possible, for example, for the communication device 30 to know the interference from the base station 100 in the communication device 30. Reuse of the downlink resource may be determined based on the interference.

The base station 100 may transmit a specific signal other than the reference signal in the area 95. In this case, the base station 100 may notify the communication device 30 of the information of the specific signal in advance via the relay device 200.

-Case of uplink resource The radio resource 55 may be an uplink resource. In this case, the relay device 200 may use the radio resource 55 to transmit data to the base station 100. However, the relay device 200 does not have to use the area 93 of the radio resource 55. Further, the communication device 30 may reuse the wireless resource 55 to transmit data to the relay device 200. However, the communication device 30 does not have to reuse the area 95 of the wireless resource 55.

Base station 100 may make measurements in region 93. Specifically, the communication device 30 may transmit a reference signal in the area 93, and the base station 100 may receive the reference signal in the area 93 and perform measurement based on the reference signal. This makes it possible, for example, for the base station 100 to know the interference from the communication device 30 in the base station 100. Reuse of uplink resources may be determined based further on the interference.

The communication device 30 may transmit a specific signal other than the reference signal in the area 93. In this case, the communication device 30 may notify the base station 100 of the information of the specific signal in advance via the relay device 200.

The relay device 200 (second communication processing unit 253) may perform measurement in the area 95. Specifically, even if the relay device 200 (second communication processing unit 253) receives the signal transmitted by the relay device 200 (first communication processing unit 251) in the area 95 and performs measurement based on the signal. good. This makes it possible, for example, for the relay device 200 to know the self-interference from the first radio link to the second radio link in the relay device 200. Further, it is possible to determine the reuse of the uplink resource based on the self-interference.

-Region information The base station 100 (communication processing unit 143) may transmit region information indicating at least one of the first region and the second region to the relay device 200. For example, the area information may indicate both the first area and the second area.

As an example, the area information may indicate a symbol of the first area and a symbol of the second area. Alternatively, a plurality of patterns of the first region and the second region may be predetermined, and the region information may indicate one of the plurality of patterns.

The base station 100 (communication processing unit 143) may transmit an RRC message including the above area information to the relay device 200. Alternatively, the base station 100 (communication processing unit 143) may transmit the MAC control element including the area information to the relay device 200. Alternatively, the base station 100 (communication processing unit 143) may transmit the DCI including the area information to the relay device 200.

By transmitting the above area information, for example, more flexible interference measurement becomes possible.

(4) Fourth Modification Example In the above-mentioned example of the embodiment of the present disclosure, as described with reference to FIG. 3, the communication device 300 is a UE, and the relay device 200 is also a UE. However, of course, the embodiments of the present disclosure are not limited to this example.

-Base station 100-Relay device 200
In the fourth modification of the embodiment of the present disclosure, the relay device 200 may be an IAB (Integrated Access and Backhaul) node, and the base station 100 may be an IAB donor. The first radio link between the base station 100 and the relay device 200 may be a backhaul link. In other words, the first radio link may be a radio link of the F1 interface.

The base station 100 may be an IAB node instead of an IAB donor, and may be connected to an IAB donor (or an upstream IAB node). In this case, the base station 100 may include an additional wireless communication unit and an additional communication processing unit in addition to the wireless communication unit 110 and the communication processing unit 143 shown in FIG. Further, the base station 100 may include an additional antenna and an additional RF circuit in addition to the antenna 181 and the RF circuit 183 shown in FIG.

-Communication device 30
As described above, the communication device 30 may be a UE. In this case, the second wireless link between the communication device 30 and the relay device 200 may be an access link. In other words, the second radio link may be a radio link of the Uu interface.

Alternatively, the communication device 30 may also be an IAB node instead of the UE. In this case, the second radio link may also be a backhaul link. In other words, the second radio link may also be a radio link of the F1 interface.

Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the embodiments. It will be appreciated by those skilled in the art that the embodiments are merely exemplary and that various modifications are possible without departing from the scope and spirit of the present disclosure.

For example, the steps in the processes described herein do not necessarily have to be performed in chronological order in the order described in the drawings. For example, the steps in the process may be performed in a different order than shown in the drawings, or in parallel. In addition, some of the steps in the process may be deleted, and additional steps may be added to the process.

For example, a method may be provided that includes the operation of one or more components included in the functional configuration of each device described herein, and a program for causing a computer to perform the operation of the above components is provided. You may. Further, a non-transitional substantive recording medium that can be read by the computer on which the program is recorded may be provided. Of course, such methods, programs, and computer-readable non-transitional substantive recording media are also included in the present disclosure.

The technical features included in the above-described embodiment may be expressed as the following features. Of course, the present disclosure is not limited to such technical features.

(Feature 1)
It ’s a base station (100),
Resource information indicating the radio resource (55) allocated to the relay device (200) for communication with the base station, and the reuse of the radio resource for communication between the relay device and the communication device (30). The information acquisition unit (141) that acquires reuse information related to usage,
A communication processing unit (143) that transmits the resource information and the reuse information to the relay device, and
Base station equipped with.

(Feature 2)
The base station according to feature 1, wherein the communication processing unit transmits downlink control information (DCI) (51) including the resource information and the reuse information to the relay device on a physical downlink control channel (PDCCH). ..

(Feature 3)
The base station according to feature 1, wherein the communication processing unit transmits a radio resource control (RRC) message including the resource information and the reuse information to the relay device.

(Feature 4)
The base station according to any one of features 1 to 3, wherein the radio resource is a downlink resource assigned to the relay device for reception from the base station.

(Feature 5)
The base station according to any one of features 1 to 3, wherein the radio resource is an uplink resource assigned to the relay device for transmission to the base station.

(Feature 6)
The base station according to any one of features 1 to 5, wherein the reuse information indicates whether or not to reuse the radio resource for communication between the relay device and the communication device.

(Feature 7)
The base station according to any one of features 1 to 5, wherein the reuse information indicates that the radio resource is reused for communication between the relay device and the communication device.

(Feature 8)
The base station according to any one of features 1 to 7, wherein the reuse is to reuse at least a part of the radio resource for communication between the relay device and the communication device.

(Feature 9)
The radio resource is a radio resource allocated to the relay device for communication with the base station in a plurality of slots.
The reuse is any of features 1-8, wherein the reuse is to reuse the radio resource for communication between the relay device and the communication device in at least one of the plurality of slots. The base station according to item 1.

(Feature 10)
The radio resource is a downlink resource (75, 76, 77, 78) assigned to the relay device for reception from the base station.
The communication processing unit transmits data to the communication device to the relay device in slots other than the last one or more slots (66) among the plurality of slots (63, 64, 65, 66). However, in the last one or more slots, the data is not transmitted to the relay device.
The slots other than the first one or more slots (63) among the plurality of slots are slots used for transmitting the data from the relay device to the communication device.
The base station according to feature 9.

(Feature 11)
The base station according to feature 10, wherein the communication processing unit transmits data to the other communication device (33) to the relay device in the last one or more slots.

(Feature 12)
The base according to feature 10 or 11, wherein the first one or more slots are slots used to transmit data to the other communication device (33) from the relay device to the other communication device. Station.

(Feature 13)
The radio resource is an uplink resource (85, 86, 87, 88, 89) assigned to the relay device for transmission to the base station.
Of the plurality of slots (63, 64, 65, 66, 67), the slots other than the last one or more slots (66, 67) transfer data from the communication device from the communication device to the relay device. The slot used to send to
The communication processing unit receives the data from the relay device in the slots other than the first one or more slots (63, 64) among the plurality of slots, and in the first one or more slots. , Do not receive the data from the relay device,
The base station according to feature 9.

(Feature 14)
The base station according to feature 13, wherein the last one or more slots are slots used for transmitting data from the other communication device (33) from the other communication device to the relay device.

(Feature 15)
The base station according to feature 13 or 14, wherein the communication processing unit receives data from the other communication device (33) from the relay device in the first one or more slots.

(Feature 16)
The base station according to any one of features 10 to 15, wherein the reuse information includes information about the first one or more slots or the last one or more slots.

(Feature 17)
The radio resource includes a first area (93) that is not used for communication between the base station and the relay device, and a second area (95) that is not reused for communication between the relay device and the communication device. The base station according to any one of the features 1 to 16, which includes at least one of them.

(Feature 18)
The base station according to feature 17, wherein the communication processing unit transmits area information indicating at least one of the first area and the second area to the relay device.

(Feature 19)
The base station according to any one of features 1 to 18, wherein the relay device is a user device (UE).

(Feature 20)
The relay device is an IAB (Integrated Access and Backhaul) node.
The base station is an IAB donor or IAB node.
The base station according to any one of the features 1 to 18.

(Feature 21)
The base station according to feature 20, wherein the communication device is an IAB node.

(Feature 22)
The base station according to any one of features 1 to 20, wherein the communication device is a user device (UE).

(Feature 23)
It is a relay device (200),
Resource information indicating the radio resource (55) allocated to the relay device for communication with the base station (100) and the reuse of the radio resource for communication between the relay device and the communication device (30). A first communication processing unit (251) that receives reuse information regarding usage from the base station, and
A second communication processing unit (253) that communicates with the communication device based on the resource information and the reuse information.
A relay device equipped with.

(Feature 24)
The first communication processing unit communicates with the base station using the radio resource based on the resource information.
The second communication processing unit reuses at least a part of the radio resource and communicates with the communication device based on the resource information and the reuse information.
The relay device according to feature 23.

(Feature 25)
The radio resource is a radio resource allocated to the relay device for communication with the base station in a plurality of slots.
The second communication processing unit communicates with the communication device in at least one of the plurality of slots based on the resource information and the reuse information.
The relay device according to feature 23 or 24.

(Feature 26)
The radio resource is a downlink resource (75, 76, 77, 78) assigned to the relay device for reception from the base station.
The first communication processing unit transfers data to the communication device to the base station in slots other than the last one or more slots (66) among the plurality of slots (63, 64, 65, 66). And in the last one or more slots, the data is not received from the base station.
The second communication processing unit does not transmit the data to the communication device in the first one or more slots (63) of the plurality of slots, and the first one of the plurality of slots. In slots other than one or more slots, the data is transmitted to the communication device.
The relay device according to feature 25.

(Feature 27)
The radio resource is an uplink resource (85, 86, 87, 88, 89) assigned to the relay device for transmission to the base station.
The second communication processing unit is the data from the communication device in the slots other than the last one or more slots (66, 67) among the plurality of slots (63, 64, 65, 66, 67). Is received from the communication device, and the data is not received from the communication device in the last one or more slots.
The first communication processing unit does not transmit the data to the base station in the first one or more slots (63, 64) of the plurality of slots, and the first of the plurality of slots. The data is transmitted to the base station in slots other than one or more slots of the above.
The relay device according to feature 25.

(Feature 28)
The first communication processing unit does not use the first region (93) of the radio resources for communication with the base station.
The second communication processing unit does not reuse the second area (95) of the radio resources for communication with the communication device.
The relay device according to any one of the features 23 to 27.

(Feature 29)
This is a method performed by the base station (100).
Resource information indicating the radio resource (55) allocated to the relay device (200) for communication with the base station, and the reuse of the radio resource for communication between the relay device and the communication device (30). Obtaining reuse information regarding usage and
Sending the resource information and the reuse information to the relay device, and
How to include.

(Feature 30)
It is a method performed by the relay device (200), and is performed by the relay device (200).
Resource information indicating the radio resource (55) allocated to the relay device for communication with the base station (100) and the reuse of the radio resource for communication between the relay device and the communication device (30). Receiving reuse information regarding usage from the base station and
Communicating with the communication device based on the resource information and the reuse information,
How to include.

(Feature 31)
On the computer
Resource information indicating the radio resource (55) allocated to the relay device (200) for communication with the base station (100) and the radio resource for communication between the relay device and the communication device (30). To get reuse information about reuse of
Sending the resource information and the reuse information to the relay device, and
A program to execute.

(Feature 32)
On the computer
Resource information indicating a radio resource (55) allocated to the relay device (200) for communication with the base station (100) and the radio resource for communication between the relay device and the communication device (30). Reusing the reuse information regarding the reuse of the above from the base station, and
Communicating with the communication device based on the resource information and the reuse information,
A program to execute.

(Feature 33)
On the computer
Resource information indicating the radio resource (55) allocated to the relay device (200) for communication with the base station (100) and the radio resource for communication between the relay device and the communication device (30). To get reuse information about reuse of
Sending the resource information and the reuse information to the relay device, and
A non-transitional substantive recording medium that can be read by a computer that records a program for executing.

(Feature 34)
On the computer
Resource information indicating a radio resource (55) allocated to the relay device (200) for communication with the base station (100) and the radio resource for communication between the relay device and the communication device (30). Reusing the reuse information regarding the reuse of the above from the base station, and
Communicating with the communication device based on the resource information and the reuse information,
A non-transitional substantive recording medium that can be read by a computer that records a program for executing.

1 System 20 Vehicle 30 Communication device 51, 71, 73, 81, 83 Control information 53, 72, 74, 82, 84 Control information 55 Radio resource 75, 76, 77, 78, 79, 80 Downlink resource 85, 86, 87, 88, 89, 90 Uplink resource 41, 43, 45, 61, 62, 63, 64, 65, 66, 67, 68 Slot 93, 95 Area 100 Base station 141 Information acquisition unit 143 Communication processing unit 200 Relay device 251 First communication processing unit 253 Second communication processing unit

Claims (15)

It ’s a base station (100),
Resource information indicating the radio resource (55) allocated to the relay device (200) for communication with the base station, and the reuse of the radio resource for communication between the relay device and the communication device (30). The information acquisition unit (141) that acquires reuse information related to usage,
A communication processing unit (143) that transmits the resource information and the reuse information to the relay device, and
Base station equipped with. The base according to claim 1, wherein the communication processing unit transmits downlink control information (DCI) (51) including the resource information and the reuse information to the relay device on a physical downlink control channel (PDCCH). Station. The base station according to claim 1, wherein the communication processing unit transmits a radio resource control (RRC) message including the resource information and the reuse information to the relay device. The base station according to any one of claims 1 to 3, wherein the radio resource is a downlink resource assigned to the relay device for reception from the base station. The base station according to any one of claims 1 to 3, wherein the radio resource is an uplink resource assigned to the relay device for transmission to the base station. The base station according to any one of claims 1 to 5, wherein the reuse information indicates whether or not to reuse the radio resource for communication between the relay device and the communication device. The base station according to any one of claims 1 to 5, wherein the reuse information indicates that the radio resource is reused for communication between the relay device and the communication device. The base station according to any one of claims 1 to 7, wherein the reuse is to reuse at least a part of the radio resource for communication between the relay device and the communication device. .. The radio resource is a radio resource allocated to the relay device for communication with the base station in a plurality of slots.
The reuse is any of claims 1 to 8, wherein the reuse is to reuse the radio resource for communication between the relay device and the communication device in at least one of the plurality of slots. Or the base station described in paragraph 1. The radio resource is a downlink resource (75, 76, 77, 78) assigned to the relay device for reception from the base station.
The communication processing unit transmits data to the communication device to the relay device in slots other than the last one or more slots (66) among the plurality of slots (63, 64, 65, 66). However, in the last one or more slots, the data is not transmitted to the relay device.
The slots other than the first one or more slots (63) among the plurality of slots are slots used for transmitting the data from the relay device to the communication device.
The base station according to claim 9. The radio resource is an uplink resource (85, 86, 87, 88, 89) assigned to the relay device for transmission to the base station.
Of the plurality of slots (63, 64, 65, 66, 67), the slots other than the last one or more slots (66, 67) transfer data from the communication device from the communication device to the relay device. The slot used to send to
The communication processing unit receives the data from the relay device in the slots other than the first one or more slots (63, 64) among the plurality of slots, and in the first one or more slots. , Do not receive the data from the relay device,
The base station according to claim 9. The base station according to claim 10 or 11, wherein the reuse information includes information about the first one or more slots or the last one or more slots. The radio resource includes a first region (93) that is not used for communication between the base station and the relay device, and a second region (95) that is not reused for communication between the relay device and the communication device. The base station according to any one of claims 1 to 12, which includes at least one of them. The base station according to claim 13, wherein the communication processing unit transmits area information indicating at least one of the first area and the second area to the relay device. It is a relay device (200),
Resource information indicating the radio resource (55) allocated to the relay device for communication with the base station (100) and the reuse of the radio resource for communication between the relay device and the communication device (30). A first communication processing unit (251) that receives reuse information regarding usage from the base station, and
A second communication processing unit (253) that communicates with the communication device based on the resource information and the reuse information.
A relay device equipped with.

Images