JP6901447B2 - Base station equipment that allocates radio resources for terminal equipment that communicates using the half-duplex method, its control method, and programs. - Google Patents

Description

The present invention relates to a radio resource allocation technique for a terminal device that communicates using a half-duplex method.

In the 3rd Generation Partnership Project (3GPP), it has been decided that the terminal device supports a half-duplex system in which transmission and reception are time-switched and executed (Non-Patent Document 1).

3GPP TS36.300 V13.4.0, June 2016

When the half-duplex method is used, a guard time occurs when switching between transmission and reception, and when transmission and reception are frequently switched, there is a problem that the period during which the terminal device that switches between transmission and reception can communicate is reduced. was there.

The present invention has been made in view of such a problem, and provides a technique capable of executing efficient communication using a half-duplex method.

The base station device according to one aspect of the present invention includes a detection means for detecting that a signal should be transmitted from the terminal device to the base station device, and the terminal device based on the detection of the state. On the other hand, it has an allocating means for allocating a radio resource for transmitting a signal to the base station apparatus, and the allocating means should transmit the signal to the terminal apparatus when the state is detected. When there is no data signal that has not yet been transmitted, the allocation of the radio resource is postponed until the data signal is generated, and the data signal is generated within a predetermined period after the state is detected. While the response signal from the terminal device when the data signal is transmitted to the terminal device and the signal from the terminal device based on the detection of the state are transmitted, the terminal device The radio resource is allocated to the terminal device so that the device does not receive a signal from the base station device.

Further, the base station apparatus according to another aspect of the present invention may have a detection means for detecting the generation of a data signal to be transmitted to the terminal apparatus and a signal may be transmitted from the terminal apparatus to the base station apparatus. A determination to determine the timing of transmitting the data signal when the generation of the data signal is detected between the specific means for specifying the first period and a predetermined timing determined based on the first period. As a means, the terminal device transmits a signal from the base station device during a period between the second period in which the response signal from the terminal device is transmitted to the data signal and the first period. so as not to become a reception states, and determination means for determining the timing, have a, a transmitting means for transmitting the data signal at the timing, the determination unit is faster the data from the predetermined timing When a signal is generated, the timing of transmitting the data signal is postponed .

According to the present invention, efficient communication can be performed with a terminal device using the half-duplex method.

It is a figure which shows the configuration example of a wireless communication system. It is a figure which briefly explains the radio resource allocation which concerns on this Embodiment. It is a figure which shows the hardware configuration example of a base station apparatus. It is a figure which shows the functional configuration example of a base station apparatus. It is a figure which shows the example of the flow of processing which a base station apparatus executes. It is a figure which shows the example of the flow of processing which a base station apparatus executes.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(System configuration)
FIG. 1 shows a configuration example of the wireless communication system according to the present embodiment. In one example, the wireless communication system includes a base station device 101 and a terminal device 102. Although FIG. 1 shows an example including one base station device 101 and one terminal device 102 for the sake of simplicity, the wireless communication system has a large number of devices like a normal cellular communication system. It may include a base station device 101 and a large number of terminal devices 102.

It is assumed that this wireless communication system can operate in accordance with the LTE (Long Term Evolution) standard defined by, for example, 3GPP, and as an example, MTC (Machine Type Communication) can be used. In the following description, technical terms in MTC will be used, but the following discussion is not intended only for MTC, and the following discussion can be applied to any other system.

The terminal device 102 adopts a half-duplex method, and communicates via a downlink (wireless link in the direction from the base station device 101 to the terminal device 102) and an uplink (wireless link in the direction from the terminal device 102 to the base station device 101). The communication with the above is switched in time and executed. That is, when communicating on the downlink, communication on the uplink is not performed, and when communicating on the uplink, communication on the downlink is not performed.

In the half-duplex method, there is a guard time during which communication is not performed when switching between downlink and uplink communication. Therefore, if the communication between the downlink and the uplink frequently occurs, the terminal device 102 may not be able to perform the communication by the guard time for many periods, and the communication efficiency may deteriorate. For example, in downlink communication, after the control signal and the data signal for allocating the radio resource of the downlink are transmitted on the downlink, the response signal to the data signal is transmitted on the uplink. .. Further, in the case of uplink communication, a control signal for allocating wireless resources of the uplink is transmitted on the downlink, and then a data signal is transmitted on the uplink. If these are performed once, once during the transmission of the data signal on the downlink, once after the completion of the data signal on the downlink and before the transmission of the data signal on the uplink, once on the uplink. Since the ascending / descending switching is performed once or three times during the transmission of the data signal, it is necessary to insert the guard time accordingly. As described above, by switching between uplink and downlink each time communication occurs, a period during which the terminal device 102 cannot perform communication frequently occurs, and the communication efficiency of the terminal device 102 may deteriorate.

In the present embodiment, the base station apparatus 101 controls the allocation timing of radio resources in order to suppress such deterioration of communication efficiency. For example, when the base station apparatus 101 detects that the terminal apparatus 102 is in a state where the first signal of the uplink should be transmitted to the base station apparatus 101, it should transmit to the terminal apparatus 102 and the untransmitted downlink. Wait for the second signal of the link to occur. Here, the first signal may be, for example, a data signal for transmitting user data, a control signal for transmitting control information in the system, or the like. The second signal is a data signal and may be a control signal containing information for predetermined control in some cases. In the following description, it is assumed that the second signal is, for example, a signal such that the response signal to the signal is transmitted from the terminal device 102, and the signal such as the signal for radio resource allocation. Signals that are not notified of the success or failure of reception shall not be included. The base station apparatus 101 is at the timing when the response signal (ACK / NACK) is transmitted from the terminal apparatus 102 when the second signal is transmitted in response to the generation of the second signal during the predetermined period. Correspondingly, for example, the radio resource is allocated to the terminal device 102 so that the above-mentioned first signal is transmitted at the same timing as that timing. The base station device 101 is not in a state where the terminal device 102 receives the signal from the base station device 101 between the transmission of the response signal to the second signal and the transmission of the first signal. It is sufficient to allocate the radio resources as described above, and it is not necessary to allocate the radio resources of the same subframe to the response signal and the first signal. For example, the base station apparatus 101 is wireless so that the interval between the transmission period of the response signal to the second signal and the transmission period of the first signal is not larger than a predetermined number (for example, one) of subframes. Can allocate resources. According to this, the transmission of the response signal to the downlink data signal and the transmission of the uplink data signal are collectively performed in one period in which the downlink communication is not performed, and therefore, within this period. Will no longer cause guard time. Therefore, it is possible to reduce the deterioration of the communication efficiency of the terminal device 102.

This situation is shown in FIG. In FIG. 2, it is assumed that each signal is repeatedly transmitted twice, but this repeated transmission is an example, and the repeated transmission may not be performed, or the number of repetitions may be more than two times.

FIG. 2A shows conventional radio resource allocation. In the case of FIG. 2A, when the base station apparatus 101 detects the occurrence of the first signal to be transmitted on the uplink (for example, in response to a scheduling request), the terminal apparatus 102 can receive the downlink signal. The control signal (MPDCCH) that allocates the radio resource for the transmission of the first signal is transmitted. MPDCCH is an acronym for MTC (Machine Type Communication) Physical Downkink Control Channel. After that, the base station device 101 receives the first signal (PUSCH) from the terminal device 102 in the radio resource assigned to the terminal device 102. PUSCH is an acronym for Physical Uplink Shared Channel. Here, it is assumed that in the base station apparatus 101, a second downlink signal is generated between the transmission of the MPDCCH and the reception of the PUSCH. In this case, the base station device 101 sends a second signal to the terminal device 102 after the terminal device 102 finishes transmitting the uplink signal and can receive the downlink signal. Sends a control signal (MPDCCH) indicating the allocation of downlink radio resources for. Then, the base station apparatus 101 transmits a downlink second signal (PDSCH) in the radio resource indicated by the MPDCCH. Here, PDSCH is an acronym for Physical Downlink Shared Channel. After that, the base station apparatus 101 receives a HARQ (Hybrid Automatic Repeat request) response signal (ACK / NACK) from the terminal apparatus 102 after a predetermined frame. This response signal is transmitted by PUCCH (Physical Uplink Control Channel). In the example of FIG. 2A, (1) between the scheduling request (uplink) and MPDCCH (downlink), (2) between MPDCCH (downlink) and PUSCH (uplink), and (3) PUSCH (uplink) and MPDCCH. Switching between (down) and (4) PDSCH (down) and PUCCH (up) is performed four times.

FIG. 2B shows the allocation of radio resources according to the present embodiment. In the case of FIG. 2B, when the base station apparatus 101 detects the generation of the first signal to be transmitted on the uplink, until the predetermined period expires or the second signal on the downlink is generated. , Postpone the allocation of radio resources. Then, when the second signal is generated, the base station apparatus 101 has a transmission timing of the first MPDCCH for allocating the radio resource for the downlink and a transmission timing of the second MPDCCH for allocating the radio resource for the uplink. Is adjusted so that the first signal of the uplink and the response signal to the second signal of the downlink are transmitted together at the same timing. By doing so, for example, in the case of FIG. 2 (A), the number of times of switching between the downlink communication and the uplink communication was 4, whereas in the case of FIG. 2 (B). , The number of times is twice (between the scheduling request and the first MPDCCH, PDSCH / between the second MPDCCH and PUSCH). Therefore, the occurrence of guard time can be reduced, and deterioration of communication efficiency can be suppressed.

In 3GPP, when a HARQ response (ACK / NACK) is returned at the timing when the radio resource for PUSCH is allocated to the terminal device 102, the response is included in the PUSCH and transmitted. There is. Therefore, in the example of FIG. 2B, since the terminal device 102 transmits the first signal and the HARQ response in one PUSCH, the amount of radio resources used can be suppressed. Note that FIG. 2B is an example, and the transmission timing of each signal is not limited to the example of FIG. 2B. For example, the terminal device 102 is in a state of receiving the signal from the base station device 101 between the transmission of the first signal of the uplink and the transmission of ACK / NACK for the second signal of the downlink. If the radio resource allocation is such that there is no such thing, it is possible to suppress the occurrence of guard time and improve the communication efficiency of the terminal device 102. For example, the base station apparatus 101 allocates radio resources so that the transmission period of the first signal and the transmission period of the response signal to the second signal are continuous, or only a part of the period overlaps. Can be done.

In the example of FIG. 2, the base station apparatus 101 detects the generation of the first signal to be transmitted from the terminal apparatus 102 by the scheduling request, but the present invention is not limited to this. For example, the base station apparatus 101 may know in advance that the transmission target data is generated in the terminal apparatus 102 at regular intervals. In this case, the base station apparatus 101 can specify the timing at which the transmission target data is generated based on the cycle. Further, it may be detected that the first signal to be transmitted is generated in the terminal device 102 by another method.

If the base station apparatus 101 does not generate the second signal of the downlink within a predetermined period after detecting the generation of the first signal of the uplink, the base station apparatus 101 is further second. Radio resources for transmitting the first signal can be allocated without waiting for the signal to be generated. The predetermined period can be set according to, for example, the allowable delay time in the communication of the first signal. That is, by allocating the radio resource to the first signal within the predetermined period, the base station apparatus 101 sets the predetermined period so that the communication of the first signal is completed within the allowable delay time. At this time, for example, when the first signal is from an application that requires real-time performance, the allowable delay time is shortened, so that the predetermined period is also shortened. Further, in VoLTE (Voice over LTE) or the like, a predetermined period is set so that radio resources are allocated within an allowable delay time of 20 milliseconds to 40 milliseconds, which is a packet generation interval. Further, when the first signal is a best effort data signal, the predetermined period may be set longer.

Further, in the above example, the base station apparatus 101 waits for the generation of the second signal of the downlink after detecting the generation of the first signal of the uplink, but these may be reversed. .. That is, if the base station apparatus 101 does not detect the generation of the first signal of the uplink at the time when the second signal of the downlink is generated, the base station apparatus 101 may wait for the generation of the first signal. Good. This also allocates radio resources so that the terminal device 102 does not become ready to receive the signal from the base station device 101 between the transmission of the first signal and the transmission of the response signal to the second signal. Is possible.

In the LTE standard, the terminal device 102 may transmit the scheduling request only at a predetermined timing set in advance. Therefore, the base station apparatus 101 has a signal such that the response signal to the downlink signal is transmitted from the terminal apparatus 102 at a predetermined timing at which the scheduling request may be transmitted from the terminal apparatus 102. Radio resource allocation for the purpose may be performed. Further, the terminal device 102 measures the radio channel and periodically reports the channel quality information (CQI). Therefore, the base station device 101 may allocate radio resources for the signal so that the response signal to the downlink signal is transmitted from the terminal device 102 at the timing of the periodic CQI report. .. In addition, the base station device 101 can perform semi-persistent scheduling that periodically allocates a constant radio resource to the terminal device 102 that periodically generates data to be transmitted, such as VoLTE. Therefore, the base station device 101 sends a downlink signal to the terminal device 102 that is the target of semi-persistent scheduling at a timing that can be specified according to the cycle in which the radio resource is allocated to the terminal device 102. Radio resources may be allocated for the signal so that the response signal to is transmitted from the terminal device 102. It should be noted that the period during which a scheduling request or CQI report may be transmitted or the first period during which radio resources are allocated by semi-persistent scheduling and the second period during which a response signal to a downlink signal is transmitted. That is, at least a part thereof may or may not overlap, but at least during these two periods, the terminal device 102 is in a state of receiving the signal from the base station device 101. It is set so that it is close in time to the extent that there is no such thing. For example, radio resource allocation for downlink signals may be made so that the interval between the first period and the second period is no longer than one subframe.

In this way, the base station apparatus 101 has a first period in which signals may be transmitted from the terminal apparatus 102 (for example, a subframe in which transmission of a scheduling request is permitted, a subframe in which periodic CQI reporting is performed). , Subframes to which radio resources are allocated by semi-persistent scheduling) so that ACK / NACK can be returned in its first period, or a first period and a second period to return ACK / NACK. The timing of transmitting the second signal of the downlink can be determined so that the terminal device 102 does not receive the signal from the base station device 101, and the radio resource can be allocated accordingly. According to this, the terminal device 102 switches between the timing of transmitting the scheduling request, the CQI report, etc. and the timing of transmitting the response signal to the downlink data signal for downlink communication. The guard time can be reduced because it will not be damaged.

(Device configuration)
Subsequently, a hardware configuration example of the base station apparatus 101 that executes the above-described processing will be described with reference to FIG. In one example, the base station device 101 includes a processor 301, a ROM 302, a RAM 303, a storage device 304, and a communication circuit 305. The processor 301 is a computer including one or more processing circuits such as a general-purpose CPU (central processing unit) and an ASIC (application specific integrated circuit), and is stored in a ROM 302 or a storage device 304. By reading and executing the program, the entire process of the base station apparatus 101 and each of the above-mentioned processes are executed. The ROM 302 is a read-only memory that stores information such as programs and various parameters related to processing executed by the base station apparatus 101. The RAM 303 is a random access memory that functions as a workspace when the processor 301 executes a program and stores temporary information. The storage device 304 is composed of, for example, a detachable external storage device or the like. The communication circuit 305 is composed of, for example, a circuit for wired communication or wireless communication. The base station device 101 is configured to include, for example, a baseband circuit for MTC, an RF circuit, and an antenna as a communication circuit 305 for communication with the terminal device 102. Further, the communication circuit 305 of the base station apparatus 101 may include, for example, a circuit for performing (wired or wireless) communication with another base station apparatus or a network node. Although one communication circuit 305 is shown in FIG. 3, the base station apparatus 101 may have a plurality of communication circuits.

FIG. 4 shows an example of the functional configuration of the base station apparatus 101. In one example, the base station apparatus 101 includes a communication unit 401 and a communication control unit 402. Further, the communication control unit 402 includes, for example, a detection unit 403 and a resource allocation unit 404.

The communication unit 401 is a functional unit for communicating with the terminal device 102. The communication control unit 402 controls the communication by the communication unit 401. For example, the communication control unit 402 outputs a signal (MPDCCH) for allocating uplink radio resources to the terminal device 102 in response to detecting that the terminal device 102 is in a state where a signal should be transmitted to the base station device 101. The communication unit 401 is controlled so as to transmit to the device 102. Then, the communication control unit 402 controls the communication unit 401 so as to receive the radio signal from the terminal device 102 by using the allocated radio resource. Further, the communication control unit 402 transmits a signal (MPDCCH) for allocating the downlink radio resource to the terminal device 102 when the signal should be transmitted from the base station device 101 to the terminal device 102. Controls the communication unit 401. Then, the communication control unit 402 controls the communication unit 401 so as to transmit a radio signal to the terminal device 102 using the allocated radio resource.

The detection unit 403 detects that the terminal device 102 has generated (generated) an uplink signal to be transmitted to the base station device 101. In the detection unit 403, for example, when a scheduling request from the terminal device 102 is received by the communication unit 401, or when the terminal device 102 transmits a signal periodically, the timing at which the signal should be transmitted is determined by the cycle. When the time until arrival reaches a predetermined value, it is possible to detect that the terminal device 102 has generated (generated) an uplink signal to be transmitted to the base station device 101. In addition, it may be detected that the terminal device 102 is in a state where a signal should be transmitted by a method other than this. Further, the detection unit 403 detects that a signal to be transmitted to the terminal device 102 has been generated, for example, by monitoring whether or not data is stored in the buffer addressed to the terminal device 102.

The resource allocation unit 404 allocates wireless resources to the terminal device 102 according to the detection result by the detection unit 403. When the resource allocation unit 404 detects that an uplink signal has been generated, the resource allocation unit 404 postpones the radio resource allocation for the uplink signal until an untransmitted signal to be transmitted on the downlink is generated. To do. Then, the resource allocation unit 404 sets the transmission period of the response signal for the downlink signal and the transmission period of the uplink signal to overlap at least a part of each other, or the length of the period between these two transmission periods. Determines the transmission timing of the first MPDCCH to which the downlink radio resource is allocated and the transmission timing of the second MPDCCH to which the uplink radio resource is allocated so that is sufficiently small and equal to or less than a predetermined value. Then, the resource allocation unit 404 transmits the first MPDCCH and the second MPDCCH at the timings determined respectively, transmits the downlink signal to the terminal device 102 at the corresponding timing, and transmits the downlink signal to the terminal device 102 at the uplink. The communication unit 401 is controlled so as to receive the response signal to the downlink signal and the uplink signal from. When the resource allocation unit 404 detects the occurrence of an uplink signal, if there is already an untransmitted signal to be transmitted on the downlink, the resource allocation unit 404 precedes the transmission timing of the response signal related to that signal. Controls can be made to allocate radio resources for uplinks. That is, the base station device 101 controls for allocating radio resources for the generated uplink signal before the terminal device 102 transitions from the downlink communication state to the uplink communication state. The signal can be transmitted to the terminal device 102. For example, when the base station apparatus 101 already has an untransmitted signal of the downlink and has already transmitted the MPDCCH regarding resource allocation for the signal, the base station apparatus 101 together with the downlink signal of the uplink MPDCCH can be transmitted to allocate radio resources for signals. By performing such control, it is possible to perform communication between the uplink signal and the downlink signal while suppressing the frequency with which the terminal device 102 switches between uplink communication and downlink communication.

Further, the resource allocation unit 404 specifies a first period in which the uplink signal may be transmitted from the terminal device 102, and is, for example, the same as or at least a part of the first period. Specify the transmission timing of the downlink signal such that the response signal is transmitted in the second period, such that the two overlap or the interval between the first period and the first period is equal to or less than a predetermined value. Then, the resource allocation unit 404 monitors whether or not a downlink signal has been generated, with a predetermined timing before the transmission timing arrives as a deadline. When the resource allocation unit 404 detects the occurrence of the downlink signal before a predetermined timing, the downlink signal is transmitted so that the response signal to the downlink signal is transmitted in the second period described above. Determine the transmission timing of. The resource allocation unit 404 transmits the MPDCCH indicating the allocation of the radio resource at the timing before that so as to transmit the downlink signal at the determined transmission timing, and transmits the downlink signal whose occurrence is detected thereafter. Send.

Since the details of the radio resource allocation by the resource allocation unit 404 are as described above, the description will not be repeated here.

(Processing flow)
Finally, the process executed by the above-mentioned base station apparatus 101 will be schematically described. 5 and 6 show an example of a processing flow executed by the base station apparatus 101. The base station device 101 executes these processes by, for example, the processor 301 executing a program stored in the ROM 302 or the storage device 304. Further, although the outline of the process will be described here, the description will not be repeated here because further details are as described above.

FIG. 5 shows an example of a processing flow executed by the base station apparatus 101 when it is detected in the terminal apparatus 102 that an uplink signal to be transmitted has been generated (S501). When such an uplink signal is generated, the base station apparatus 101 waits for an untransmitted signal of the downlink to be generated (S502), and postpones the allocation of radio resources for the uplink signal. If the downlink untransmitted signal is not generated within a predetermined period after the uplink signal is generated (NO in S502, YES in S503), the base station apparatus 101 directly transmits the uplink signal. Therefore, radio resource allocation is performed (S505). On the other hand, when the downlink untransmitted signal is generated within a predetermined period after the uplink signal is generated (YES in S502 while NO in S503), the base station apparatus 101 receives the downlink signal. The transmission timing of the downlink signal and the uplink signal is determined so that the state in which the downlink signal can be received does not occur between the transmission of the response signal for the transmission and the transmission of the uplink signal. (S504). Then, the base station apparatus 101 executes radio resource allocation so that the downlink signal and the uplink signal are transmitted at the determined timing (S505). In this way, the radio resource allocation for the uplink signal is postponed, and the state in which the response signal transmission of the downlink signal and the transmission of the uplink signal execute the uplink communication is kept. It is executed before the transition to the state of executing the downlink communication. As a result, it is possible to suppress the occurrence of guard time and suppress the deterioration of the communication efficiency of the terminal device 102.

FIG. 6 shows that when the base station device 101 transmits a downlink signal, the terminal device 102 goes to the downlink signal at the same time as or close to the timing at which the terminal device 102 may transmit the uplink signal. Defer radio resource allocation for downlink signals to receive the response signal of. In this process, the base station apparatus 101 identifies a first period during which the uplink signal may be transmitted (S601). Since the base station device 101 manages, for example, the transmission timing of the scheduling request, the timing of periodic CQI reporting, or whether or not periodic radio resource allocation is performed to the terminal device 102. At some point, the next upcoming first period can be easily identified. Then, the base station apparatus 101 specifies a predetermined timing corresponding to the transmission timing of the downlink signal so that the response signal can be received at the specified first period or a timing close to the specified first period (S602). ). The predetermined timing may be determined in consideration of various conditions such as a time margin for adjusting the radio resource allocation and the like. Then, the base station apparatus 101 waits for the downlink signal to be generated (S603). When the predetermined timing arrives (YES in S604) without generating the downlink signal (NO in S603), the base station apparatus 101 returns the process to S601 and processes from the identification of the next first period. repeat. On the other hand, when the downlink signal is generated (YES in S603) before the predetermined timing arrives, the base station apparatus 101 transmits the response signal in the first period or a timing close to it. The transmission timing of the downlink signal is determined so that the downlink signal is transmitted at such a timing (S605). Then, the base station apparatus 101 allocates the radio resource of the transmission timing for the downlink signal (S606), and transmits the downlink signal in the allocated radio resource. According to this, the transmission of the response signal of the downlink signal and the transmission of the uplink signal by the scheduling request, the CQI report, and the periodically allocated radio resource keep the state of executing the uplink communication. It is executed before the transition to the state of executing the downlink communication. As a result, it is possible to suppress the occurrence of guard time and suppress the deterioration of the communication efficiency of the terminal device 102.

The base station apparatus 101 can execute the process of FIG. 5 and the process of FIG. 6 in parallel. That is, the base station apparatus 101 executes the process of FIG. 5 when the occurrence of the uplink signal is detected first while continuing to specify the first period and the predetermined timing described above, and performs the downlink signal. When the generation of the signal is detected first, the process as shown in FIG. 6 can be executed. As a result, deterioration of communication efficiency in the terminal device 102 can be suppressed.

Claims (14)

It ’s a base station device,
A detection means for detecting that a signal should be transmitted from the terminal device to the base station device, and
An allocation means for allocating a radio resource for transmitting a signal to the base station device to the terminal device based on the detection of the state.
Have,
The allocation means
If there is no data signal that should be transmitted to the terminal device when the condition is detected and has not yet been transmitted, the allocation of the radio resource is postponed until the data signal is generated.
When the data signal is generated within a predetermined period after the state is detected, the transmission of the response signal from the terminal device and the state when the data signal is transmitted to the terminal device are detected. Allocate the radio resource to the terminal device so that the terminal device does not receive the signal from the base station device while the signal is transmitted from the terminal device based on the above. ,
A base station device characterized by that. When the data signal is not generated during the predetermined period after the state is detected, the assigning means sends a signal from the terminal device to the terminal device based on the detection of the state. Allocate the radio resource for transmission,
The base station apparatus according to claim 1. The allocating means allocates the radio resource to the terminal device so that at least a part of the period during which the response signal is transmitted and the period during which the signal based on the detection of the state is transmitted overlap. ,
The base station apparatus according to claim 1 or 2. The predetermined period is set based on the allowable delay time in communication based on the detection of the state.
The base station apparatus according to any one of claims 1 to 3. If the data signal is generated while the state is not detected, the transmission of the data signal is postponed until the state is detected.
The base station apparatus according to any one of claims 1 to 4. The detection means detects the state in response to receiving a scheduling request from the terminal device.
The base station apparatus according to any one of claims 1 to 5. It ’s a base station device,
A detection means for detecting the generation of a data signal to be transmitted to a terminal device,
Specific means for identifying a first period during which a signal may be transmitted from the terminal device to the base station device, and
It is a determination means for determining the timing of transmitting the data signal when the generation of the data signal is detected up to a predetermined timing determined based on the first period, and is the terminal for the data signal. The terminal device is not in a state of receiving the signal from the base station device during the period between the second period in which the response signal is transmitted from the device and the first period. A determination means for determining the timing of transmitting the data signal, and
A transmission means for transmitting the data signal at a timing determined by the determination means, and
Have a,
When the data signal is generated earlier than the predetermined timing, the determination means postpones the timing of transmitting the data signal.
The base station apparatus according to claim and this. The first period includes a period during which the terminal device is allowed to send a scheduling request.
The base station apparatus according to claim 7. The first period includes a period during which the terminal device should transmit a signal for reporting channel quality information to and from the base station device.
The base station apparatus according to claim 7 or 8. The first period includes a period in which the radio resource is allocated to the terminal device when the radio resource is periodically allocated to the terminal device.
The base station apparatus according to any one of claims 7 to 9. The determination means determines the timing so that at least a part of the first period and the second period overlap.
The base station apparatus according to any one of claims 7 to 10. It is a control method for base station equipment.
A detection step of detecting that the detection means is in a state where a signal should be transmitted from the terminal device to the base station device, and
An allocation step in which the allocation means allocates a radio resource for transmitting a signal to the base station device to the terminal device based on the detection of the state.
Have,
In the allocation process,
If there is no data signal that should be transmitted to the terminal device when the condition is detected and has not yet been transmitted, the allocation of the radio resource is postponed until the data signal is generated.
When the data signal is generated within a predetermined period after the state is detected, the transmission of the response signal from the terminal device and the state when the data signal is transmitted to the terminal device are detected. Allocate the radio resource to the terminal device so that the terminal device does not receive the signal from the base station device while the signal is transmitted from the terminal device based on the above. ,
A control method characterized by that. It is a control method for base station equipment.
A detection process in which the detection means detects the generation of a data signal to be transmitted to the terminal device,
A specific step in which the specific means specifies a first period during which a signal may be transmitted from the terminal device to the base station device.
The determination means is a determination step of determining the timing of transmitting the data signal when the generation of the data signal is detected up to a predetermined timing determined based on the first period, and the data. The terminal device may be in a state of receiving the signal from the base station device during the period between the second period in which the response signal from the terminal device is transmitted to the signal and the first period. The determination step of determining the timing of transmitting the data signal and the determination step so as not to occur.
A transmission step in which the transmission means transmits the data signal at a timing determined in the determination step,
Have a,
In the determination step, when the data signal is generated earlier than the predetermined timing, the timing of transmitting the data signal is postponed.
Control wherein a call. A program for causing a computer to function as each means included in the base station apparatus according to any one of claims 1 to 11.

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