WO2024062616A1

WO2024062616A1 - Base station device, terminal device, and wireless communication system

Info

Publication number: WO2024062616A1
Application number: PCT/JP2022/035461
Authority: WO
Inventors: 秋元陽介
Original assignee: 富士通株式会社
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2024-03-28

Abstract

The present invention provides a base station device in a wireless communication system supporting first communication which uses different resource blocks in the same slot and the same carrier to perform uplink communication and downlink communication at the same timing, the base station device including a control unit that transmits a notification message containing first information and second information to a first terminal device that supports the first communication and a second terminal device that does not support the first communication, the first information being information that the first terminal device and the second terminal device can recognize and including information related to a slot configuration, the second information being information that the first terminal device can recognize but the second terminal device cannot recognize and including information related to a slot configuration, the second terminal device storing the slot configuration in the first information as a slot configuration assigned to itself, the first terminal device prioritizing the slot configuration in the second information for a redundant slot of the slot configuration in the first information and the slot configuration in the second information and storing the prioritized slot configuration as the slot configuration assigned to itself.

Description

Base station equipment, terminal equipment, and wireless communication systems

The present invention relates to a base station device, a terminal device, and a wireless communication system.

Wireless communication systems require efficient use of radio resources. As one method of efficient use of radio resources, 3GPP (registered trademark) (Third Generation Partnership Project) is considering a technology called SBFD (Sub-band Full Duplex).

SBFD is a method that can allocate the same slot and the same resource of TDD (Time Division Duplex) to both uplink and downlink. In SBFD, a target slot is used as an uplink resource by a certain terminal device, but is used as a downlink resource by another terminal device. The base station apparatus performs reception using uplink resources and transmission using downlink resources at the same timing in the target slot.

The technology related to SBFD is described in the following prior art documents.

Japanese Patent Application Publication No. 2020-141409 Special Publication No. 2012-501603

However, in a wireless communication system, a new version communication device that supports SBFD and an old version communication device that does not support SBFD may coexist. The communication device of the old version has not determined how to operate when receiving a conventional message that is compatible with SBFD, or when receiving a new message that is added with SBFD support, and problems may occur. there's a possibility that.

Therefore, one disclosure provides a base station device, a terminal device, and a wireless communication system that can suppress the effects on terminal devices that do not support SBFD in an SBFD-compatible wireless communication system.

A base station apparatus in a wireless communication system corresponding to first communication that performs uplink and downlink communication at the same timing using different resource blocks in the same slot and the same carrier, the base station apparatus comprising: a control unit that transmits a notification message including first information and second information to one terminal device and a second terminal device that does not support the first communication, and the first information is transmitted to the first terminal device. The second information is information that can be recognized by the device and the second terminal device, and includes information regarding a slot configuration, and the second information is information that can be recognized by the first terminal device but not by the second terminal device, The second terminal device stores the slot configuration of the first information as a slot configuration assigned to the second terminal device, and the first terminal device stores the slot configuration of the first information and the slot configuration of the first information. Among the slot configurations of the second information, for duplicate slots, the slot configuration of the second information is prioritized and stored as the slot configuration assigned to the own device.

One disclosure is that in a wireless communication system compatible with SBFD, the influence on terminal devices that are not compatible with SBFD can be suppressed.

FIG. 1 is a diagram showing an example of the configuration of a wireless communication system 10. FIG. 2 is a diagram illustrating a configuration example of the base station device 200. FIG. 3 is a diagram showing a configuration example of the terminal device 100. FIG. 4 is a diagram showing an example of SBFD communication. FIG. 5 is a diagram showing an example of a message in the first method. FIG. 6 is a diagram showing an example of a slot configuration. FIG. 7 is a diagram illustrating an example of the SBFD processing sequence in the second method. FIG. 8 is a diagram showing an example of first information and second information. FIG. 9 is a diagram showing an example of a message structure. FIG. 10 is a diagram showing an example of the first information and the second information. FIG. 11 is a diagram showing an example of a message structure. FIG. 12 is a diagram showing an example of a slot configuration.

[First embodiment]
A first embodiment will be described.

<About the wireless communication system 10>
FIG. 1 is a diagram showing a configuration example of a wireless communication system 10. As shown in FIG. The wireless communication system 10 includes a base station device 200, a terminal device 100, and a terminal device 101. The wireless communication system 10 is a wireless communication system compatible with SBFD.

The base station device 200 is a device that wirelessly connects with the terminal device 100 and the terminal device 101 and performs wireless communication, and is, for example, an eNodeB or a gNodeB. The base station device 200 is compatible with SBFD, and is compatible with communication generations such as 5G and NR (New Radio), for example. Further, the base station device 200 may be configured with one device, or may be configured with a plurality of devices such as a CU (Central Unit) and a DU (Distributed Unit).

The terminal device 100 is a communication device that wirelessly connects to the base station device 200 and transmits and receives data, and is, for example, a smartphone or a tablet terminal. The terminal device 100 supports SBFD. Hereinafter, the version of communication software compatible with SBFD may be referred to as a new version. Terminal device 100 is a communication device that has a new version of software.

The terminal device 101 is a communication device that wirelessly connects to the base station device 200 and transmits and receives data, and is, for example, a smartphone or a tablet terminal. The terminal device 101 does not support SBFD. Hereinafter, a version of communication software that does not support SBFD may be referred to as an old version. Terminal device 101 is a communication device that has a new version of software.

<Configuration example of base station device 200>
FIG. 2 is a diagram illustrating a configuration example of the base station device 200. The base station device 200 includes a CPU (Central Processing Unit) 210, a storage 220, a memory 230, and a wireless communication circuit 250.

The storage 220 is an auxiliary storage device such as a flash memory, an HDD (Hard Disk Drive), or an SSD (Solid State Drive) that stores programs and data. The storage 220 stores a wireless communication control program 221 and an SBFD control program 222.

The memory 230 is an area into which programs stored in the storage 220 are loaded. The memory 230 may also be used as an area for programs to store data.

The wireless communication circuit 250 is a device that performs wireless communication with the terminal device 100 and the terminal device 101. The base station device 200 transmits and receives signals (messages) to and from the terminal device 100 and the terminal device 101 via the wireless communication circuit 250.

The CPU 210 is a processor that loads a program stored in the storage 220 into the memory 230, executes the loaded program, constructs each part, and implements each process.

The CPU 210 executes a wireless communication control program to build a communication unit and perform wireless communication control processing. The wireless communication control process is a process of establishing a wireless connection with the terminal device 100 or the terminal device 101 and transmitting and receiving signals (messages) via the connected wireless communication. Base station device 200 controls wireless communication in wireless communication control processing.

The CPU 210 executes the SBFD control program to build a control unit and perform SBFD control processing. The SBFD control process is a process of setting and notifying the slot configuration associated with the execution of the SBFD. In the SBFD control process, the base station device 200 notifies and instructs each terminal device of the slot configuration. Furthermore, in the SBFD control process, the base station device 200 acquires capability information indicating whether the terminal device 100 is an SBFD-compatible device.

<Configuration example of terminal device 100>
FIG. 3 is a diagram showing a configuration example of the terminal device 100. The terminal device 100 includes a CPU 110, a storage 120, a memory 130, and a wireless communication circuit 150. Note that although the terminal device 101 has, for example, the same hardware configuration as the terminal device 100, the stored programs may be different.

The storage 120 is an auxiliary storage device such as a flash memory, HDD, or SSD that stores programs and data. The storage 120 stores a wireless communication program 121 and an SBFD execution program 122.

The memory 130 is an area into which programs stored in the storage 120 are loaded. The memory 130 may also be used as an area for programs to store data.

The wireless communication circuit 150 is a device that performs wireless communication with the base station device 200. The terminal device 100 transmits and receives signals (messages) to and from the base station device 200 via the wireless communication circuit 150.

The CPU 110 is a processor that loads a program stored in the storage 120 into the memory 130, executes the loaded program, constructs each part, and implements each process.

The CPU 110 executes the wireless communication program 121 to build a terminal communication unit and perform wireless communication processing. The wireless communication process is a process of wirelessly connecting with the base station device 200 and performing communication. Note that it is assumed that the wireless communication program 121 also has the terminal device 101 compatible with the old version.

By executing the SBFD execution program 122, the CPU 110 constructs a terminal control unit and performs SBFD execution processing. The SBFD execution process is a process of executing SBFD according to instructions from the base station device 200. In the SBFD execution process, the terminal device 100 receives the purpose of the target slot of the SBFD. In the SBFD execution process, the terminal device 100 uses the target slot of the SBFD for the designated purpose.

The SBFD execution process is a program that the terminal device 100 that supports the new version has, and the terminal device 101 that supports the old version does not have the SBFD execution program 122. However, the terminal device 100 of the old version may be able to execute SBFD, for example, using conventional processing and messages rather than new processing for executing SBFD. For example, the first method shown below is a method that can be executed without defining a new message or new information element.

<SBFD>
An example of SBFD will be explained. Note that the following explanation is an example of SBFD, and the uplink and downlink radio resource allocation method, notification method, etc. are not limited to the following example. Furthermore, the present invention can be applied to communication systems other than SBFD that use one unit of radio resource, such as the same timing and the same frequency, for both uplink and downlink. The communication applied in the present invention (first communication) is, for example, communication in which upstream and downstream communications are performed at the same timing using different resource blocks in the same slot and the same carrier.

FIG. 4 is a diagram showing an example of SBFD communication. The wireless communication system 10 includes a base station device 200, a terminal device 100-1, and a terminal device 100-2.

The base station device 200 divides a certain slot SL1 into UL (uplink) resources and DL (downlink) resources in frequency units. For example, the slot SL1 is represented by time on the horizontal axis and frequency on the vertical axis. Base station apparatus 200 sets slot SL1 as a resource used for both uplink and downlink.

The base station device 200 instructs the terminal device 100-1 to use slot SL1 for DL. Furthermore, the base station device 200 instructs the terminal device 100-2 to use slot SL1 in UL.

The terminal device 100-1 receives data at the timing of slot SL1. On the other hand, the terminal device 100-2 transmits data at the timing of slot SL1. Base station device 200 transmits data to terminal device 100-1 and receives data from terminal device 100-2 at the timing of slot SL1.

In this way, the same slot is used as an uplink resource for one terminal device and a downlink resource for another terminal device, and the base station device 200 transmits and receives data in the same slot (while receiving uplink signals, , transmitting downlink signals) is sometimes called SBFD. Note that although SBFD will be described as an example hereinafter, the method applicable to the present invention is not limited to SBFD. The adaptive method may be any method that uses a specific slot for multiple purposes (uplink resource, downlink resource, flexible resource, mixed uplink and downlink resource, etc.) at the same timing.

<Method for realizing SBFD>
A communication method for realizing SBFD will be described below.

<First method>
A first method for realizing SBFD will be explained. FIG. 5 is a diagram showing an example of a message in the first method.

In FIG. 5, slots 2 to 4 indicated by dotted lines are slots targeted for SBFD. In addition, in FIG. 5, U (Uplink) indicates an uplink resource (hereinafter sometimes referred to as a U resource), D (Downlink) indicates a downlink resource (hereinafter sometimes referred to as a D resource), S (Special) indicates a special resource (hereinafter sometimes referred to as an S resource), and F (Flexible) indicates a flexible resource (hereinafter sometimes referred to as an F resource). The special resource is, for example, a resource in which uplink resources and downlink resources coexist in symbol units. A flexible resource is a resource that can be used for both uplink and downlink, and can be overwritten as either an uplink resource, a downlink resource, or a special resource, for example. Alternatively, if an uplink channel, a downlink channel, an uplink signal, and a downlink signal are scheduled by the base station device 200, the

terminal devices

100 and 101 can transmit or receive, respectively.

The base station device 200 uses a notification message to notify both terminal devices that support SBFD, such as terminal device 100 and terminal device 101, and terminal devices that do not support SBFD, of the allocation contents of slots 1 to 10 (the use of each slot). Figure 5 (A) shows an example of a notification message notifying the allocation contents. In Figure 5 (A), the base station device 200 sets slots 2 to 4 as F slots. The notification message notifying the slot allocation contents is, for example, tdd-ul-dl-configurationCommon.

The base station device 200 is wirelessly connected to the terminal device 101 and the terminal device 100, and individually instructs each terminal device to use the target slot of the SBFD. An example of a message that individually instructs is tdd-ul-dl-configurationDedicated. Note that the individual message is transmitted after establishing a wireless connection with the terminal device by, for example, executing a random access procedure.

FIG. 5(B) is a diagram showing an example of an individual message to the terminal device 101. The base station device 200 instructs the terminal device 101 to change slots 2 to 4 to D, D, and S, respectively. Regarding the other slots, the content specified in the notification message is maintained without instructing the content to be changed.

FIG. 5(C) is a diagram showing an example of an individual message to the terminal device 100. The base station device 200 instructs to change slots 2 to 4 to D, U, and U, respectively. For other slots, the contents specified in the broadcast message are maintained.

The terminal device 100 and the terminal device 101 overwrite the contents of the slot specified by the individual message and save it in their internal memory. The terminal device 100 and the terminal device 101 communicate with the base station device 200 according to the overwritten contents (according to the contents instructed by the individual message).

<Second method>
Next, a second method for realizing SBFD will be explained.

For example, depending on the communication system, when changing the slot settings later, it may be necessary to set the F resource once. That is, depending on the communication system, changing slots other than F resources to U resources, D resources, and S resources may be restricted. Therefore, in the first method, the base station device 200 temporarily sets all target slots of SBFD as F resources, and then changes the settings individually.

However, the resource type of a series of slots has a pattern defined in a standardization standard, for example. FIG. 6 is a diagram showing an example of a slot configuration. For example, the slot configuration shown in FIG. 6 is defined in TS38.101-4, which is a standard in the 3GPP (Third Generation Partnership Project). In 3GPP, configurations other than the slot configurations specified herein are not guaranteed to operate.

The terminal device is guaranteed to be able to send and receive signals according to this pattern. In other words, the terminal device may not be able to support patterns other than those defined in the standardization specifications. Therefore, when the terminal device 101 compatible with the old version allocates F resources as in the first method, depending on the slot configuration of the SBFD, resources may be allocated with a slot configuration that is not compatible (operation is not guaranteed). It may be stored away.

Therefore, in the second method, an information element indicating the slot configuration is newly defined in the broadcast message. The terminal device 100 that can analyze the new information element follows the new information element, and the terminal device 101 that cannot analyze the new information element follows the conventional information element. Thereby, the base station device 200 can appropriately notify the slot configuration in a system where terminal devices of old and new versions coexist.

FIG. 7 is a diagram showing an example of the SBFD processing sequence in the second method. The wireless communication system 10 includes a base station device 200, new version terminal devices 100-1 and 2, and old version terminal device 101. It is assumed that the base station device 200 sets different slot configurations for each terminal device.

The base station device 200 transmits (broadcasts) the first broadcast message to the terminal devices 100-1 and 100-2 and the terminal device 101 (S200). The first broadcast message includes first information and second information. The first broadcast message is, for example, tdd-ul-dl-configurationCommon.

The first broadcast information is, for example, an information element that can be analyzed even by an old version of the terminal device, and includes information regarding the slot configuration. On the other hand, the second broadcast information is a new information element that cannot be analyzed by an old version terminal device, but can be analyzed by a new version terminal device, for example.

FIG. 8 is a diagram showing an example of first information and second information. The first information is, for example, tdd-UL-DL-ConfigurationCommon. The second information is tdd-UL-DL-ConfigurationCommon-SBFD-r18, which is newly defined in the present invention. The first information and the second information have, for example, the same format (TDD-UL-DL-ConfigCommon).

FIG. 9 is a diagram showing an example of the structure of a message. FIG. 9(A) is a diagram showing an example of first information and second information. In the first information, D resources, D resources, and S resources are set in slots 2 to 4, which are target slots of SBFD. In the second information, F resources are set in slots 2 to 4, which are the target slots of SBFD. In the first information and the second information, the same resource is set for slots other than slots 2 to 4.

Returning to the sequence of FIG. 7, upon receiving the first broadcast message, the terminal devices 100-1 and 100-2 analyze the second information, and the slot configuration set for the terminal devices 100-1 and 100-2 indicates that slots 2 to 4 are F resources. is recognized and stored in internal memory. At this time, the terminal devices 100-1 and 100-2 may not analyze (ignore) the first information, or even if they analyze it, they may not store it in their internal memory. Further, the terminal devices 100-1 and 2 may analyze the first information and store it in the internal memory, and then analyze the second information and overwrite the slot configuration in the second information in the internal memory. That is, the terminal devices 100-1 and 100-2 may prioritize the slot configuration of the second information over the slot configuration of the first information.

On the other hand, since the terminal device 101 is an old version, it cannot analyze the second information. Therefore, the terminal device 101 analyzes the first information, recognizes that slots 2 to 4 are D resources, D resources, and S resources, and stores them in the internal memory.

The base station device 200 wirelessly connects to the terminal devices 100-1 and 100-2 and the terminal device 101 by random access (S201). The wirelessly connected state is, for example, a state in which the base station device 200 can transmit individual messages to each terminal device.

Note that in the random access procedure, the base station device 200 may acquire the capabilities of the terminal devices from the terminal devices 100-1 and 100-2. The terminal devices 100-1 and 2 transmit capability information, such as whether or not the terminal devices are capable of supporting SBFD, to the base station device 200 using, for example, a RACH preamble, an RRCSetupComplete message, or UECapabilityInformation. By receiving the capability information of the terminal device 100, the base station device 200 can recognize that the terminal device 100 is compatible with SBFD, and can transmit an individual message.

The base station device 200 transmits individual messages including different slot configurations to each of the terminal devices 100-1 and 100-2 compatible with the new version (S202, S203). The individual message is, for example, tdd-ul-dl-configurationDedicated. The individual message includes information (third information) regarding the slot configuration of the slot (differential slot) to be changed from the second information.

FIG. 9(B) is a diagram showing an example of an individual message sent to the terminal device 100-1. The base station device 200 transmits an individual message to the terminal device 100-1, which uses slots 2 to 4 as D resources, U resources, and U resources, respectively.

FIG. 9(C) is a diagram showing an example of an individual message sent to the terminal device 100-2. The base station device 200 transmits an individual message to the terminal device 100-2, which uses slots 2 to 4 as U resources, U resources, and U resources, respectively.

Returning to the sequence of FIG. 7, the terminal device 100-1 receives the individual message (S202), recognizes that slots 2 to 4 are to be changed to D resources, U resources, and U resources, respectively, and stores them in internal memory. (Overwrite.

On the other hand, the terminal device 100-2 receives the individual message (S203), recognizes that slots 2 to 4 are to be changed to U resource, U resource, and U resource, respectively, and stores (overwrites) it in its internal memory.

In the second method, the base station device 200 can use a notification message to assign different slot configurations to the new version terminal device 100 and the old version terminal device 101. This allows the base station device 200 to apply a slot configuration within the range of guaranteed operation to the old version terminal device 101. In other words, in the second method, SBFD can be implemented in an SBFD-compatible communication system without affecting the guaranteed operation of the old version. Note that in this method, the slot configuration is changed by tdd-ul-dl-configurationDedicated for each of the terminal device 100-1 and the terminal device 100-2, but this operation is not necessarily required, and SBFD can also be implemented by the base station device 200 allocating uplink data or downlink data while keeping it set to F resources.

<3rd method>
Next, a third method for realizing SBFD will be explained. In the second method, the formats of the first information and the second information are the same, but in the third method, the formats of the first information and the second information are different. In the third method, only the difference from the first information is indicated by the second information. Note that the third method has the same sequence as the second method, so it will be explained using the sequence of FIG. 7.

The first information is the same as the first information in the second method. The second information is, for example, a new information element that cannot be analyzed by an old version of the terminal device, but can be analyzed by a new version of the terminal device. The second information in the third method does not have the same format as the first information, but includes a difference in slot configuration from the first information (differential slot information).

FIG. 10 is a diagram showing examples of the first information and the second information. The first information is, for example, tdd-UL-DL-ConfigurationCommon. The second information is, for example, composed of the following two pieces of information newly defined in the present invention.

(1) slotSpecificConfigurationsSbfdToAddModList-r18
(2) slotSpecificConfigurationsSbfdToReleaseList-r18

The format of information (1) is SEQUENCE (SIZE (1..maxNrofSlots)) OF TDD-UL-DL-SbfdSlotConfig, which indicates the change content (change content structure) of the slot whose purpose is to be changed.

The format of information (2) is SEQUENCE (SIZE (1..maxNrofSlots)) OF TDD-UL-DL-SlotIndex, and indicates the number of the slot to be changed (index structure). This allows the second information to indicate the number of the slot to be changed and its use after the change.

Furthermore, the format of the second information may be, for example, the same format as the information indicating the slot configuration in the individual message.

FIG. 11 is a diagram showing an example of the message structure. FIG. 11(A) is a diagram showing an example of the first information and the second information. In the first information, D resources, D resources, and S resources are set in slots 2 to 4, which are the target slots for SBFD. In the second information, F resources are set in slots 2 to 4, which is the difference from the first information. In the second information, no resources are set for slots other than slots 2 to 4.

Returning to the sequence in FIG. 7, upon receiving the first broadcast message, the terminal devices 100-1 and 2 analyze the first information and store the slot configuration in their internal memory. Then, the terminal devices 100-1 and 2 analyze the second information and overwrite the slot configuration differences (slots 2 to 4) set by the second information in their internal memories.

On the other hand, upon receiving the first broadcast message, the terminal device 101 analyzes the first information and stores the slot configuration in its internal memory. Since the terminal device 101 cannot analyze the second information, it does not process the second information.

The subsequent sequence and processing are the same as in the second method. The terminal device 100-1 receives the individual message shown in FIG. 11(B) (S202), and stores (overwrites) it in its internal memory. On the other hand, the terminal device 100-2 receives the individual message shown in FIG. 11(C) (S203), and stores (overwrites) it in its internal memory.

In the third method, the base station device 200 can allocate different slot configurations to the new version terminal device 100 and the old version terminal device 101, respectively, using a broadcast message. The new version of the terminal device temporarily stores the slot configuration according to the first information, but then overwrites the stored slot configuration with respect to the slot set with the subsequent second information.

Thereby, the base station device 200 can apply the slot configuration within the guaranteed operation range to the terminal device 101 of the old version. That is, in the third method, SBFD can be implemented in an SBFD-compatible communication system without affecting the operation guarantee of the old version.

Note that when the wireless communication system 10 supports both the second method and the third method, the base station device 200 may use different methods depending on, for example, the number of target slots of SBFD.

[Other embodiments]
In the first embodiment, the base station device 200 sets the F resource to the slot targeted for SBFD in the second information. Then, the base station device 200 uses the individual message to change the SBFD target slot to the U resource or the D resource. However, the base station apparatus 200 may respond to changes other than the above-described change from F resources to U resources or D resources. It is assumed that the base station apparatus 200 is capable of responding to changes from F resources, U resources, D resources, and S resources to F resources, U resources, D resources, and S resources, respectively. The base station apparatus 200 is also capable of responding to a change from an F resource to an F resource (although it is not actually changed, the F resource is overwritten in terms of processing). Note that there may be some change patterns that are not allowed due to restrictions imposed by the communication system, which will be described later.

The slot configuration is limited by the communication system, as shown in FIG. 6, for example. In the second and third methods, the base station device 200 can freely set F resources in the slot targeted for SBFD. Therefore, the set slot configuration may not comply with the restrictions in the communication system. Therefore, the terminal device 100 may determine whether the specified slot configuration is within the permissible range, and if it is outside the permissible range, may ignore (discard) the slot configuration.

FIG. 12 is a diagram showing an example of the slot configuration. For example, in a certain communication system, it is assumed that the slot configuration is set in the order of D resources, F resources, and U resources from the left. FIG. 12A is a diagram illustrating an example of a slot configuration that complies with regulations. Note that the D resource, F resource, and U resource do not necessarily have to be set. For example, the slot configuration may be configured with D resources and U resources without F resources. As for the slot configuration, it is sufficient that the order of D resources, F resources, and U resources is maintained.

FIG. 12(B) is a diagram showing an example of a slot configuration that does not comply with the regulations. In FIG. 12B, since the F resource exists after the U resource, the order does not comply with the regulations.

FIG. 12C is a diagram showing an example of a slot configuration that does not comply with the regulations. In FIG. 12C, the D resource exists after the F resource, so the order does not comply with the regulations.

When the terminal device 100 receives a slot configuration as shown in FIG. 12(B) or FIG. 12(C), it does not have to follow the slot configuration.

Furthermore, the wireless communication system 10 may support any one of the first method, the second method, and the third method, or a combination thereof. Which method is to be supported may be determined depending on the communication characteristics of the wireless communication system 10, the frequency of change in slot usage due to SBFD, the number of SBFD compatible slots, and the like.

10: Wireless communication system 100: Terminal device 110: CPU
120: Storage 121: Wireless communication program 122: SBFD execution program 130: Memory 150: Wireless communication circuit 101: Terminal device 200: Base station device 210: CPU
220: Storage 221: Wireless communication control program 222: SBFD control program 230: Memory 250: Wireless communication circuit

Claims

A base station device in a wireless communication system corresponding to first communication that performs uplink and downlink communication at the same timing using different resource blocks in the same slot and the same carrier,
a control unit that transmits a notification message including first information and second information to a first terminal device that corresponds to the first communication and a second terminal device that does not correspond to the first communication;
The first information is information that can be recognized by the first terminal device and the second terminal device, and includes information regarding a slot configuration,
The second information is information that can be recognized by the first terminal device but cannot be recognized by the second terminal device, and includes information regarding a slot configuration,
The second terminal device stores the slot configuration of the first information as a slot configuration assigned to the second terminal device,
Of the slot configuration of the first information and the slot configuration of the second information, the first terminal device prioritizes the slot configuration of the second information for overlapping slots, and sets the slot configuration assigned to the first terminal device as the slot configuration assigned to the first terminal device. Memorize base station equipment.
After transmitting the notification message, the control unit wirelessly connects with the first terminal device and transmits an individual message including third information to the first terminal device,
The third information includes information regarding a slot configuration of a differential slot to be changed from the slot configuration of the second information,
The base station device according to claim 1, wherein the first terminal device overwrites and stores the slot configuration of the differential slot included in the third information as the slot configuration assigned to the first terminal device.
The first information and the second information have the same format,
When the first terminal device includes the second information in the broadcast message, the first terminal device discards the first information and stores the slot configuration included in the second information as the slot configuration assigned to the first terminal device. 1. The base station device according to 1.
The base station device according to claim 3, wherein the first terminal device stores a slot configuration included in the first information as a slot configuration assigned to the first terminal device when the second information is not included in the broadcast message.
The second information is information regarding a slot configuration of a slot that is different from the slot configuration of the first information,
The first terminal device stores the slot configuration included in the first information as the slot configuration assigned to the first terminal device, and when the second information is included in the broadcast message, the first terminal device stores the slot configuration included in the first information as the slot configuration assigned to the first terminal device, and when the second information is included in the broadcast message, the first terminal device stores the slot configuration included in the first information. The base station device according to claim 1, wherein the base station device overwrites and stores the slot configuration as the slot configuration assigned to the base station device.
The base station apparatus according to claim 2, wherein the second information has the same format as the third information.
The base according to claim 2, wherein the control unit acquires capability information from the first terminal device in the wireless connection, and recognizes from the capability information that the first terminal device supports the first communication. station equipment.
The control unit includes:
setting a flexible resource that can be changed to either an uplink resource or a downlink resource in the target slot of the first communication of the second information;
The base station apparatus according to claim 2, wherein either the uplink resource or the downlink resource is set in the target slot of the third information.
The flexible resource can also be changed to a special resource that is a mixed uplink and downlink resource,
The base station apparatus according to claim 8, wherein the control unit sets one of the uplink resource, the downlink resource, or the special resource to the target slot of the third information.
The base station apparatus according to claim 1, wherein the broadcast message is tdd-ul-dl-configurationCommon.
The broadcast message is tdd-ul-dl-configurationCommon,
The base station apparatus according to claim 2, wherein the individual message is tdd-ul-dl-configurationDedicated.
The base station device according to claim 1, wherein the first communication is SBFD (Sub-band Full Duplex).
A terminal device in a wireless communication system corresponding to first communication in which uplink and downlink communication is performed at the same timing in a base station device using different resource blocks in the same slot and the same carrier,
a terminal communication unit that receives a broadcast message including first information and second information transmitted from the base station device;
a terminal control unit that prioritizes the slot configuration of the second information for overlapping slots between the slot configuration of the first information and the slot configuration of the second information, and stores the slot configuration as the slot configuration assigned to the own device; have,
The first information is information that can be recognized by a terminal device that supports the first communication and a terminal device that does not support the first communication, and includes information regarding a slot configuration;
The second information is information that can be recognized by a terminal device that supports the first communication but cannot be recognized by a terminal device that does not support the first communication, and includes information regarding a slot configuration.
Terminal device.
A base station device and a first terminal device corresponding to first communication that perform uplink and downlink communication at the same timing in the base station device using different resource blocks in the same slot and the same carrier; A wireless communication system having an incompatible second terminal device,
The base station device transmits a broadcast message including first information and second information to the first terminal device and the second terminal device,
The first information is information that can be recognized by the first terminal device and the second terminal device, and includes information regarding a slot configuration,
The second information is information that can be recognized by the first terminal device but cannot be recognized by the second terminal device, and includes information regarding a slot configuration.
The second terminal device receives the broadcast message and stores the slot configuration of the first information as a slot configuration assigned to the second terminal device,
The first terminal device receives the broadcast message, and among the slot configurations of the first information and the slot configuration of the second information, for overlapping slots, the first terminal device prioritizes the slot configuration of the second information, and to be stored as the slot configuration assigned to the
Wireless communication system.