WO2017183240A1 - Base station device and mobile communication system - Google Patents

Abstract

The present invention is configured in such a way that a control device (11) starts a process to determine the amount of a communication resource to be allocated to a first wireless signal with interframe timing in the time frame of a first carrier wave, and starts a process to determine the amount of a communication resource to be allocated to a second wireless signal when a delay time has elapsed from the interframe timing in the time frame.

Description

Base station apparatus and mobile communication system

The present invention relates to a base station apparatus that performs radio communication with a mobile terminal, and a mobile communication system including the mobile terminal and the base station apparatus.

The standard specification of 3GPP (Third Generation Partnership Project) defines carrier aggregation (CA: Carrier Aggregation) that bundles a plurality of component carrier bands (CC: Component Carrier) and performs radio signal communication. Yes.
In carrier aggregation, a plurality of radio signals are simultaneously transmitted using a plurality of component carriers, and thus throughput is improved.

When communication between a base station and a mobile terminal is performed by carrier aggregation, a plurality of cells (cells) are used as carriers in different frequency bands.
A plurality of cells may be classified into two types of cells. Of the two types of cells, for example, one cell is called a primary cell (PCell) and the other cell is a secondary cell. (SCell: Secondary Cell).

The base station and the mobile terminal perform radio signal communication in time frames on the primary cell and the secondary cell.
One time frame is divided into a plurality of subframes, and physical channels such as a data channel and a control channel are arranged in each subframe.
The data channel is used for transmission / reception of information data, and the control channel is used for transmission / reception of control information.
For example, control information indicating a communication resource amount allocated to a radio signal is arranged in a control channel in a downlink subframe transmitted from a base station to a mobile terminal, and a data channel in the same subframe includes Information data corresponding to the data size corresponding to the communication resource amount is arranged.
For example, Patent Document 1 below discloses an allocation determination process for determining the amount of communication resources allocated to a radio signal.

There are cases where the time frame on the primary cell and the time frame on the secondary cell are synchronized, and sometimes not synchronized.
When the time frame is synchronized, the boundary timing, which is the timing between each frame in the time frame, and the frame number of the time frame match, and when the time frame is not synchronized, the time frame The boundary timing and frame number do not match.
When the primary cell and the secondary cell are accommodated in one base station, the time frame on the primary cell and the time frame on the secondary cell are generally synchronized.
When the primary cell and the secondary cell are accommodated in different base stations, the time frame on the primary cell and the time frame on the secondary cell are generally asynchronous, but the same for different base stations By providing the reference timing, it is possible to synchronize the time frame on the primary cell and the time frame on the secondary cell.

JP 2014-183409 A

Since the conventional mobile communication system is configured as described above, when the time frame on the primary cell and the time frame on the secondary cell are synchronized, in general, the control device is installed on the primary cell. It is conceivable to simultaneously execute the allocation determination process for the communication resource amount allocated to the radio signal communicated in the time frame and the allocation determination process for the communication resource amount allocated to the radio signal communicated in the time frame on the secondary cell. For this reason, in order for the control device to be able to complete the communication resource amount allocation determination processing within a predetermined time, there is a problem that it is necessary to have hardware or the like with high processing capability.

The present invention has been made to solve the above-described problems, and provides a base station device and a mobile communication system capable of performing communication resource amount allocation determination processing without increasing the processing capability of the control device. For the purpose.

A base station apparatus according to the present invention determines a first communication resource amount to be allocated to a first radio signal and a control apparatus to determine a second communication resource amount to be allocated to a second radio signal; Using the carrier wave, a first radio signal including information data for the data size corresponding to the first communication resource amount determined by the control device is transmitted to the mobile terminal, and control is performed using the second carrier wave. A base station that transmits to the mobile terminal a second radio signal including information data of a data size corresponding to the second communication resource amount determined by the device, and the control device includes a time frame of the first carrier wave The timing for determining the allocation of the first communication resource is started at the timing between the frames in the time frame, and the delay time has elapsed from the timing between the frames in the time frame. In, in which so as to initiate the allocation process of determining the second communication resource amount.

According to the present invention, the control device starts the first communication resource amount allocation determination process at the timing between the frames in the time frame of the first carrier wave, and the delay time from the timing between the frames in the time frame. Since the second communication resource amount allocation determination process is started at the elapsed timing, there is an effect that the communication resource amount allocation determination process can be performed without increasing the processing capability of the control device. .

It is a block diagram which shows the mobile communication system by Embodiment 1 of this invention. 6 is a timing chart showing the processing timing of the resource allocation unit 11b in the control device 11 and the processing timing of the transmission units 12a and 13a in the base stations 12 and 13 when the delay time D is 0. 6 is a timing chart showing the processing timing of the resource allocation unit 11b in the control device 11 and the processing timing of the transmission units 12a and 13a in the base stations 12 and 13 when the delay time D is T / 2. It is a block diagram which shows the other mobile communication system by Embodiment 1 of this invention. It is a block diagram which shows the other mobile communication system by Embodiment 1 of this invention. It is a block diagram which shows the mobile communication system by Embodiment 2 of this invention. 4 is a timing chart showing processing timing of a resource allocation unit 11b in a control device 11 and processing timings of transmission units 12a and 13a in base stations 12 and 13; It is a block diagram which shows the other mobile communication system by Embodiment 2 of this invention. It is a block diagram which shows the other mobile communication system by Embodiment 2 of this invention. 4 is a timing chart showing processing timing of a resource allocation unit 11b in a control device 11 and processing timings of transmission units 12a and 13a in base stations 12 and 13; It is explanatory drawing which shows the allocation result message containing a sub-frame number and a communication resource amount. It is a block diagram which shows the mobile communication system by Embodiment 3 of this invention. 3 is a configuration diagram showing a delay class output unit 24 of a mobile terminal 2. FIG. It is explanatory drawing which shows the delay class message containing information data ID and a downlink request | requirement delay class. It is a flowchart which shows the processing content of the resource allocation part 11d in the control apparatus 11. FIG. It is a hardware block diagram of the base station apparatus in a mobile communication system. It is a hardware block diagram of a computer in case a base station apparatus is implement | achieved by software, firmware, etc.

Hereinafter, in order to explain the present invention in more detail, modes for carrying out the present invention will be described with reference to the accompanying drawings.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a mobile communication system according to Embodiment 1 of the present invention.
In FIG. 1, the base station device 1 includes a control device 11, base stations 12 and 13, a reference timing source 14, and a timing delay unit 15.
In the first embodiment, a base station 12 corresponding to a primary cell that is a first carrier (indicated as “PCell” in FIG. 1), and a secondary cell that is a second carrier (in FIG. 1, Although the base station 13 corresponding to “SCell” is provided as a separate base station, the base station 12 and the base station 13 may be integrated as one base station.
Moreover, although the control apparatus 11 and the base stations 12 and 13 are provided as separate apparatuses, the control apparatus 11 and the base stations 12 and 13 may be integrated.
In the first embodiment, the primary cell is treated as the first cell and the secondary cell is treated as the second cell.

The control device 11 includes a reception unit 11a, a resource allocation unit 11b, and a transmission unit 11c, and allocates a communication resource amount Rs1 (first communication resource amount) to be assigned to the first radio signal transmitted from the base station 12 to the mobile terminal 2. ) And a communication resource amount Rs2 (second communication resource amount) assigned to the second radio signal transmitted from the base station 13 to the mobile terminal 2 is determined.
The receiving unit 11a of the control device 11 is connected to the receiving unit 12b of the base station 12 and the receiving unit 13b of the base station 13, and the control information transmitted from the communication unit 21 of the mobile terminal 2 is received by the receiving unit 12b of the base station 12. The control information transmitted from the communication unit 22 of the mobile terminal 2 is received via the reception unit 13 b of the base station 13.
The receiving unit 11a of the control device 11 receives the timing signal Tim1 transmitted from the receiving unit 12b of the base station 12, that is, the timing signal Tim1 indicating the boundary timing that is the timing between subframes in the time frame of the primary cell. At the same time, the timing signal Tim2 transmitted from the receiving unit 13b of the base station 13, that is, the timing signal Tim2 indicating the boundary timing which is the timing between subframes in the time frame of the secondary cell is received.
In addition, when the receiving unit 11a of the control device 11 is connected to the receiving units 12b and 13b of the base stations 12 and 13 via a network such as a LAN (Local Area Network), for example, an interface device for the network is provided. ing.

The control information transmitted from the communication units 21 and 22 of the mobile terminal 2 is stored in the reception quality of the radio signal measured by the communication units 21 and 22 of the mobile terminal 2, that is, the data channel of the subframe in the time frame. Information indicating the reception quality of a transport block (TB).
As the reception quality of the transport block, for example, the received signal strength (RSSI: Received Signal Strength Indicator) of the transport block, the carrier level to interference noise ratio (CINR), and the like can be considered.

The resource allocation unit 11b of the control device 11 starts an allocation determination process for the communication resource amount Rs1 allocated to the first radio signal at the timing when the timing signal Tim1 is received by the reception unit 11a.
Further, the resource allocation unit 11b starts the allocation determination process for the communication resource amount Rs2 allocated to the second radio signal at the timing when the timing signal Tim2 is received by the reception unit 11a.

The transmission unit 11c of the control device 11 is connected to the transmission unit 12a of the base station 12 and the transmission unit 13a of the base station 13, and uses the communication resource amount Rs1 allocated to the first radio signal determined by the resource allocation unit 11b as a base. While transmitting to the transmission part 12a of the station 12, the communication resource amount Rs2 assigned to the second radio signal determined by the resource assignment part 11b is transmitted to the transmission part 13a of the base station 13.
In addition, when the transmission unit 11c of the control device 11 is connected to the transmission units 12a and 13a of the base stations 12 and 13 via a network such as a LAN, for example, an interface device for the network is provided.

As the first radio signal, the base station 12 cuts out information data corresponding to the data size corresponding to the communication resource amount Rs1 transmitted from the transmission unit 11c of the control device 11 from the information data transmitted to the mobile terminal 2. Then, a TB construction process for storing the extracted information data in the transport block TB1 is performed, and the transport block TB1 is transmitted to the communication unit 21 of the mobile terminal 2 using the primary cell, and the communication resource amount Rs1 Is transmitted to the communication unit 21 of the mobile terminal 2.
As the second radio signal, the base station 13 cuts out information data for the data size corresponding to the communication resource amount Rs2 transmitted from the transmission unit 11c of the control device 11 from the information data transmitted to the mobile terminal 2. Then, a TB construction process for storing the extracted information data in the transport block TB2 is performed, and the transport block TB is transmitted to the communication unit 22 of the mobile terminal 2 using the secondary cell, and the communication resource amount Rs2 Is transmitted to the communication unit 22 of the mobile terminal 2.

The transmission unit 12a of the base station 12 performs time adjustment of its own reference clock so that the boundary timing of the time frame in the primary cell coincides with the reference timing indicated by the timing signal Tim _ref output from the reference timing source 14 To do.
Also, the transmission unit 12a of the base station 12 has a data size corresponding to the communication resource amount Rs1 transmitted from the transmission unit 11c of the control device 11 out of the information data transmitted to the mobile terminal 2 as the first radio signal. The TB construction process is performed to cut out the information data and store the cut-out information data in the transport block TB1.
When the TB construction process is completed, the transmission unit 12a of the base station 12 transmits the transport block TB1 to the communication unit 21 of the mobile terminal 2 using the primary cell at the time frame boundary timing in the primary cell, and Control information indicating the communication resource amount Rs1 is transmitted to the communication unit 21 of the mobile terminal 2.

The receiving unit 12 b of the base station 12 receives the control information transmitted from the communication unit 21 of the mobile terminal 2 and transfers the control information to the receiving unit 11 a of the control device 11. This control information includes information indicating the reception quality of the transport block TB1 in the communication unit 21 of the mobile terminal 2.
In addition, the receiving unit 12b of the base station 12 transfers the timing signal Tim _ref output from the reference timing source 14 to the receiving unit 11a of the control device 11 as a timing signal Tim1 indicating the boundary timing of the time frame in the primary cell.

The transmission unit 13a of the base station 13 adjusts the time of the reference clock it has so that the boundary timing of the time frame in the secondary cell matches the timing signal Tim2 output from the timing delay unit 15.
In addition, the transmission unit 13a of the base station 13 has a data size corresponding to the communication resource amount Rs2 transmitted from the transmission unit 11c of the control device 11 out of the information data transmitted to the mobile terminal 2 as the second radio signal. The TB construction process of cutting out the information data and storing the cut-out information data in the transport block TB2 is performed.
When the TB construction process is completed, the transmission unit 13a of the base station 13 transmits the transport block TB2 to the communication unit 22 of the mobile terminal 2 using the secondary cell at the time frame boundary timing in the secondary cell, and Control information indicating the communication resource amount Rs2 is transmitted to the communication unit 22 of the mobile terminal 2.

The receiving unit 13 b of the base station 13 receives the control information transmitted from the communication unit 22 of the mobile terminal 2 and transfers the control information to the receiving unit 11 a of the control device 11. This control information includes information indicating the reception quality of the transport block TB2 in the communication unit 22 of the mobile terminal 2.
In addition, the reception unit 13 b of the base station 13 transfers the timing signal Tim <b> 2 output from the timing delay unit 15 to the reception unit 11 a of the control device 11.

The reference timing source 14 is a signal source that outputs a timing signal Tim _ref indicating the reference timing to the base station 12 and the timing delay unit 15.
That is, the reference timing source 14 includes a GPS receiver that receives a GPS signal transmitted from, for example, a GPS (Global Positioning System) satellite. A reference timing is generated, and a timing signal Tim _ref indicating the reference timing is output to the base station 12 and the timing delay unit 15.

The timing delay unit 15 includes, for example, a delay circuit, and sets a delay time D from the time frame boundary timing in the primary cell.
Further, the timing delay unit 15 delays the timing signal Tim _ref output from the reference timing source 14 by the delay time D, and the delayed timing signal Tim _ref is used as a timing signal Tim2 indicating the boundary timing of the time frame in the secondary cell. Output to the station 13.
The delay circuit that delays the timing signal Tim _ref by the delay time D is disclosed in, for example, the following Patent Document 2 and will not be described in detail. The timing signal Tim _ref may be delayed by the delay time D, and the timing signal Tim _ref may be delayed by a method other than using a delay circuit.
[Patent Document 2] WO95 / 02932

Here, although it is assumed that the receiving unit 13b of the base station 13 transfers the timing signal Tim2 indicating the boundary timing of the time frame in the secondary cell to the receiving unit 11a of the control device 11, the receiving unit of the base station 13 13b generates the time frame boundary timing in the secondary cell by adding the delay time D set by the timing delay unit 15 to the reference timing indicated by the timing signal Tim _ref output from the reference timing source 14 Then, the timing signal Tim2 indicating the boundary timing may be transmitted to the receiving unit 11a of the control device 11.

As the delay time D, for example, a time such as a microsecond is assumed, but the time of the subframe in the time frame in the primary cell and the secondary cell may be expressed as a fraction or a fraction with the unit time as the unit time. Good. Further, it may be expressed in units of time of symbols constituting a subframe.
Here, an example is shown in which the timing delay unit 15 sets the delay time D, but the control device 11 determines the delay time D according to the cell used in carrier aggregation, and timings a message including the delay time D. The delay may be output to the delay unit 15, and the timing delay unit 15 may set the delay time D included in the message.
Further, the delay time D set by the timing delay unit 15 may be specified by the user operating a man-machine interface (not shown).

The delay time D set by the timing delay unit 15 is assumed to be a relative time between the boundary timing of the time frame in the primary cell and the boundary timing of the time frame in the secondary cell. It may be an absolute time indicating the time of the boundary timing. When the delay time D is the absolute time indicating the time of the boundary timing of the time frame in the secondary cell, the timing delay unit 15 indicates the boundary timing of the time frame in the secondary cell at the timing when the current time becomes the absolute time. The timing signal Tim2 is output to the base station 13.
Here, an example in which the timing delay unit 15 sets the delay time D is shown, but the delay time D is recorded in advance in a non-volatile storage area (not shown), and the timing delay unit 15 is non-volatile at the time of power activation, for example. Alternatively, the delay time D may be read from the storage area.

The mobile terminal 2 includes a communication unit 21 corresponding to the primary cell, a communication unit 22 corresponding to the secondary cell, and a control unit 23 that controls the communication units 21 and 22.
The communication unit 21 includes a reception unit 21a and a transmission unit 21b.
The receiving unit 21a of the communication unit 21 receives the transport block TB1 and control information transmitted from the transmitting unit 12a of the base station 12 using the primary cell.
The receiving unit 21a of the communication unit 21 measures the reception quality of the transport block TB1.
The transmission unit 21b of the communication unit 21 transmits control information indicating the reception quality of the transport block TB1 measured by the reception unit 21a to the reception unit 12b of the base station 12 using the primary cell.

The communication unit 22 includes a reception unit 22a and a transmission unit 22b.
The receiving unit 22a of the communication unit 22 receives the transport block TB2 and control information transmitted from the transmitting unit 13a of the base station 13 using the secondary cell.
The receiving unit 22a of the communication unit 22 measures the reception quality of the transport block TB2.
The transmission unit 22b of the communication unit 22 transmits control information indicating the reception quality of the transport block TB2 measured by the reception unit 22a to the reception unit 13b of the base station 13 using the secondary cell.
The control unit 23 is configured by, for example, a semiconductor integrated circuit on which a CPU (Central Processing Unit) is mounted, a one-chip microcomputer, or the like. , 22 are controlled to output a command to transmit control information indicating the reception quality measured by the receiving units 21a, 22a.

FIG. 16 is a hardware configuration diagram of the base station apparatus in the mobile communication system according to the first embodiment of the present invention.
In FIG. 1, each of the control device 11, the base stations 12 and 13, the reference timing source 14, and the timing delay unit 15, which are components of the base station device, has dedicated hardware as shown in FIG. 16, that is, a control circuit. 51, a base station circuit 52, 53, a timing oscillation circuit 54, and a timing delay circuit 55 are assumed.
The control circuit 51 is a circuit that realizes the control device 11, the base station circuits 52 and 53 are circuits that realize the base stations 12 and 13, the timing oscillation circuit 54 is a circuit that realizes the reference timing source 14, and the timing delay circuit 55 is a timing delay. This is a circuit for realizing the unit 15.
The control circuit 51, the base station circuits 52 and 53, the timing oscillation circuit 54, and the timing delay circuit 55 are, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), An FPGA (Field-Programmable Gate Array) or a combination thereof is applicable.

However, the constituent elements of the base station apparatus are not limited to those realized by dedicated hardware, and the base station apparatus may be realized by software, firmware, or a combination of software and firmware. .
Software and firmware are stored as programs in the memory of the computer. The computer means hardware that executes a program, and includes, for example, a CPU, a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, a processor, a DSP (Digital Signal Processor), and the like.
FIG. 17 is a hardware configuration diagram of a computer when the base station apparatus is realized by software, firmware, or the like.
When the base station device is realized by software, firmware, or the like, a program for causing the computer to execute processing procedures of the control device 11, the base stations 12, 13, the reference timing source 14, and the timing delay unit 15 is stored in the memory 61. The computer processor 62 may execute a program stored in the memory 61.

Here, the memory 61 is, for example, a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory, an EPROM (Erasable Programmable Read Only Nonvolatile Memory, or an EEPROM (Electrically Portable Memory). Such as a semiconductor memory, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, and a DVD (Digital Versatile Disc).

16 shows an example in which each component of the base station apparatus is realized by dedicated hardware, and FIG. 17 shows an example in which the base station apparatus is realized by software, firmware, etc. Some components in the station apparatus may be realized by dedicated hardware, and the remaining components may be realized by software, firmware, or the like.
For example, the base stations 12, 13, the reference timing source 14, and the timing delay unit 15 can be realized by dedicated hardware, and the control device 11 can be realized by software, firmware, or the like. However, the combination of dedicated hardware and software is arbitrary.

Next, the operation will be described.
The transmission unit 12a of the base station 12 includes control information indicating the communication resource amount Rs1 to be allocated to the first radio signal in the control channel of the subframe in the time frame in the primary cell, and in the data channel of the same subframe, A transport block TB1 storing information data corresponding to the data size corresponding to the communication resource amount Rs1 is included. The communication resource amount Rs1 assigned to the first radio signal is determined by the resource assignment unit 11b described later.
Then, the transmission unit 12a of the base station 12 transmits the control information indicating the communication resource amount Rs1 and the transport block TB1 to the communication unit 21 of the mobile terminal 2 using the primary cell at the time frame boundary timing in the primary cell. Send.
Details of the transmission processing in the transmission unit 12a of the base station 12 will be described later.

The transmission unit 13a of the base station 13 includes control information indicating the communication resource amount Rs2 to be allocated to the second radio signal in the control channel of the subframe in the time frame in the secondary cell, and in the data channel of the same subframe, A transport block TB2 storing information data for a data size corresponding to the communication resource amount Rs2 is included. The communication resource amount Rs2 assigned to the second radio signal is determined by the resource assignment unit 11b described later.
Then, the transmission unit 13a of the base station 13 transmits the control information indicating the communication resource amount Rs2 and the transport block TB2 to the communication unit 22 of the mobile terminal 2 using the secondary cell at the boundary timing of the time frame in the secondary cell. Send.
Details of the transmission processing in the transmission unit 13a of the base station 13 will be described later.

The receiving unit 21a of the communication unit 21 in the mobile terminal 2 receives the transport block TB1 and the control information indicating the communication resource amount Rs1 transmitted from the transmitting unit 12a of the base station 12.
The receiving unit 21a of the communication unit 21 acquires information data stored in the transport block TB1 as information data corresponding to the data size corresponding to the communication resource amount Rs1 indicated by the control information.
The receiving unit 21a of the communication unit 21 measures the reception quality of the transport block TB1.
The reception unit 22a of the communication unit 22 in the mobile terminal 2 receives the transport block TB2 and the control information indicating the communication resource amount Rs2 transmitted from the transmission unit 13a of the base station 13.
The receiving unit 22a of the communication unit 22 acquires information data stored in the transport block TB2 as information data corresponding to the data size corresponding to the communication resource amount Rs2 indicated by the control information.
In addition, the receiving unit 22a of the communication unit 22 measures the reception quality of the transport block TB2.

When the reception unit 21a measures the reception quality of the transport block TB1, the transmission unit 21b of the communication unit 21 in the mobile terminal 2 determines the reception quality of the transport block TB1 using the primary cell according to the instruction of the control unit 23. The control information shown is transmitted to the receiving unit 12b of the base station 12.
When the reception unit 22a measures the reception quality of the transport block TB2 in the mobile terminal 2, the transmission unit 22b of the communication unit 22 determines the reception quality of the transport block TB2 using the secondary cell according to the instruction of the control unit 23. The control information shown is transmitted to the receiving unit 13b of the base station 13.
The control information indicating the reception quality of the transport blocks TB1 and TB2 is transmitted using, for example, the control channel of the uplink subframe.

The receiving unit 12b of the base station 12 receives control information indicating the reception quality of the transport block TB1 transmitted from the communication unit 21 of the mobile terminal 2, and transfers the control information to the receiving unit 11a of the control device 11.
The receiving unit 13b of the base station 13 receives control information indicating the reception quality of the transport block TB2 transmitted from the communication unit 22 of the mobile terminal 2, and transfers the control information to the receiving unit 11a of the control device 11.

The reference timing source 14 outputs a timing signal Tim _ref indicating the reference timing to the base station 12 and the timing delay unit 15.
When the transmission unit 12a of the base station 12 receives the timing signal Tim _ref from the reference timing source 14, the transmission unit 12a has the self timing so that the boundary timing of the time frame in the primary cell matches the reference timing indicated by the timing signal Tim _ref. Set the time of the reference clock.
The receiving unit 12b of the base station 12 transfers the timing signal Tim _ref output from the reference timing source 14 to the receiving unit 11a of the control device 11 as the timing signal Tim1 indicating the time frame boundary timing in the primary cell.

When receiving the timing signal Tim _ref from the reference timing source 14, the timing delay unit 15 _assumes that the boundary timing of the time frame in the primary cell matches the reference timing indicated by the timing signal Tim _ref. A delay time D from the frame boundary timing is set.
When the delay time D is set, the timing delay unit 15 delays the timing signal Tim _ref output from the reference timing source 14 by the delay time D, and the delayed timing signal Tim _{ref is set} to the time frame boundary timing in the secondary cell. Is output to the base station 13 as a timing signal Tim2.

When the transmission unit 13a of the base station 13 receives the timing signal Tim2 from the timing delay unit 15, the transmission unit 13a of the reference clock of the base station 13 so that the boundary timing of the time frame in the secondary cell matches the timing indicated by the timing signal Tim2. Set the time.
The receiving unit 13b of the base station 13 transfers the timing signal Tim2 output from the timing delay unit 15 to the receiving unit 11a of the control device 11.

Thereby, when the delay time D is 0, the time frame in the primary cell and the time frame in the secondary cell are synchronized, and therefore the boundary timing and frame number of the time frame in the primary cell and the secondary cell match.
However, when the delay time D is greater than 0, the time frame boundary timing and the frame number in the primary cell and the secondary cell do not match.
For example, when the subframe time of the time frame in the primary cell and the secondary cell is T and the delay time D is T / 2, the boundary timing and frame number of the time frame in the secondary cell are It will be delayed by T / 2 from the boundary timing and frame number.
In the first embodiment, without increasing the processing capability of the resource allocation unit 11b in the control device 11, the allocation determination process for the communication resource amount Rs1 allocated to the first radio signal and the communication resource amount allocated to the second radio signal. Since the purpose is to be able to execute the allocation determination process for Rs2, the delay time D is not set to 0, and for example, the delay time D is set to T / 2.

The receiving unit 11a of the control device 11 receives control information indicating the reception quality of the transport block TB1 transferred from the receiving unit 12b of the base station 12, and a timing signal Tim1 indicating the boundary timing of the time frame in the primary cell. .
In addition, the reception unit 11a of the control device 11 receives control information indicating the reception quality of the transport block TB2 transferred from the reception unit 13b of the base station 13, and a timing signal Tim2 indicating the boundary timing of the time frame in the secondary cell. Receive.

2 and 3 are timing charts showing the processing timing of the resource allocation unit 11b in the control device 11 and the processing timing of the transmission units 12a and 13a in the base stations 12 and 13.
FIG. 2 shows a case where the delay time D is 0, and FIG. 3 shows a case where the delay time D is T / 2, assuming that the subframe time of the time frame in the primary cell and the secondary cell is T.
2 and 3, “Δ” indicates the time frame boundary timing in the primary cell, and “∧” indicates the time frame boundary timing in the secondary cell.

The resource allocation unit 11b of the control device 11 starts allocation determination processing of the communication resource amount Rs1 allocated to the first radio signal at the time frame boundary timing in the primary cell indicated by the timing signal Tim1 received by the reception unit 11a. . 2 and 3, the allocation determination process for the communication resource amount Rs1 is expressed as “resource allocation (a)”.
Further, the resource allocation unit 11b of the control device 11 performs an allocation determination process for the communication resource amount Rs2 allocated to the second radio signal at the time frame boundary timing in the secondary cell indicated by the timing signal Tim2 received by the reception unit 11a. Start. 2 and 3, the allocation determination process for the communication resource amount Rs2 is expressed as “resource allocation (b)”.
The allocation determination process for the communication resource amounts Rs1 and Rs2 needs to be completed with sufficient time for the transmission units 12a and 13a of the base stations 12 and 13 to perform the TB construction process. That is, the total processing time of the allocation determination process for the communication resource amount Rs1 and the TB construction process by the transmission unit 12a of the base station 12 is completed within the subframe time T, and the allocation determination process for the communication resource amount Rs2 and the base station 13 The total processing time with the TB construction processing by the transmitting unit 13a needs to be completed within the subframe time T.

The processing time required for the allocation determination process for the communication resource amounts Rs1 and Rs2 differs depending on the processing load in each allocation determination process and the processing capability of the resource allocation unit 11b in the control device 11. For the sake of convenience, it is assumed that the processing time required for the allocation determination processing of the communication resource amounts Rs1, Rs2 is T / 2.
For example, when the resource allocation unit 11b is realized by a semiconductor integrated circuit mounted with a CPU, the processing load in each allocation determination process is determined by the number of required instructions executed by the CPU.
The processing capability of the resource allocation unit 11b is determined by, for example, performance represented by MIPS (Million Instructions Per Second).

When the delay time D is 0, as shown in FIG. 2, the time frame boundary timing “Δ” in the primary cell coincides with the time frame boundary timing “∧” in the secondary cell. Allocation determination processing and communication resource amount Rs2 allocation determination processing are started simultaneously.
When the delay time D is T / 2, as shown in FIG. 3, the time frame boundary timing “∧” in the secondary cell is T / 2 later than the time frame boundary timing “Δ” in the primary cell. The allocation determination process for the communication resource amount Rs2 is started at the timing when the allocation determination process for the communication resource amount Rs1 is completed.
Therefore, when the delay time D is 0, the resource allocation unit 11b necessary for performing the allocation determination process for the communication resource amount Rs1 and the allocation determination process for the communication resource amount Rs2 in the processing time of T / 2. Assuming that the processing capacity is 100%, if the delay time D is T / 2, and if the resource allocation unit 11b has a processing capacity of 50%, the allocation determination process for the communication resource amounts Rs1 and Rs2 is set to T / 2 treatment times.

When the allocation determination process for the communication resource amount Rs1 by the resource allocation unit 11b is completed, the transmission unit 11c of the control device 11 transmits the communication resource amount Rs1 determined by the resource allocation unit 11b to the transmission unit 12a of the base station 12.
Further, the transmission unit 11c of the control device 11 transmits the communication resource amount Rs2 determined by the resource allocation unit 11b to the transmission unit 13a of the base station 13 when the allocation determination process of the communication resource amount Rs2 by the resource allocation unit 11b is completed. To do.

When the transmission unit 12a of the base station 12 receives the communication resource amount Rs1 from the transmission unit 11c of the control device 11, the transmission resource amount Rs1 is selected from the information data transmitted to the mobile terminal 2 as the first radio signal. The information data corresponding to the corresponding data size is cut out.
Then, the transmission unit 12a of the base station 12 performs a TB construction process for storing the extracted information data in the transport block TB1. 2 and 3, the TB construction process for storing the cut out first radio signal in the transport block TB1 is represented as “TB construction (a)”.
As shown in FIGS. 2 and 3, the start timing of the TB construction process for storing the information data in the transport block TB1 is the timing immediately after the allocation determination process for the communication resource amount Rs1 is completed regardless of the delay time D. is there.
2 and 3 show an example in which the processing time of this TB construction processing is T / 2, and the total processing time of the allocation determination processing of the communication resource amount Rs1 and the TB construction processing is the time in the primary cell. It coincides with the subframe time T of the frame.

When the transmission unit 13a of the base station 13 receives the communication resource amount Rs2 from the transmission unit 11c of the control device 11, the transmission resource amount Rs2 is selected from the information data transmitted to the mobile terminal 2 as the second radio signal. The information data corresponding to the corresponding data size is cut out.
Then, the transmission unit 13a of the base station 13 performs TB construction processing for storing the extracted information data in the transport block TB2. In FIG. 2 and FIG. 3, the TB construction process for storing the extracted second radio signal in the transport block TB2 is represented as “TB construction (b)”.
As shown in FIGS. 2 and 3, the start timing of the TB construction process for storing the information data in the transport block TB2 is the timing immediately after the allocation determination process for the communication resource amount Rs2 is completed regardless of the delay time D. is there.

However, when the delay time D is 0, as shown in FIG. 2, the allocation determination process for the communication resource amount Rs1 and the allocation determination process for the communication resource amount Rs2 are performed at the same timing. The TB construction process stored in the port block TB2 is performed at the same timing as the TB construction process for storing information data in the transport block TB1.
When the delay time D is T / 2, as shown in FIG. 3, the allocation determination process for the communication resource amount Rs2 is started at the timing when the allocation determination process for the communication resource amount Rs1 is completed. At the timing when the TB construction process stored in the port block TB1 is completed, the TB construction process for storing information data in the transport block TB2 is started.

When the TB construction process is completed, the transmitting unit 12a of the base station 12 includes control information indicating the communication resource amount Rs1 determined by the resource allocating unit 11b in the control channel of the next subframe, and the data channel of the same subframe Including the transport block TB1, the control information and the transport block TB1 are transmitted to the communication unit 21 of the mobile terminal 2 using the primary cell at the next boundary timing of the time frame in the primary cell.
2 and 3, the control information and the transport block TB1 are transmitted to the communication unit 21 of the mobile terminal 2 at the second boundary timing “Δ” from the left.

When the TB construction process is completed, the transmission unit 13a of the base station 13 includes the control information indicating the communication resource amount Rs2 determined by the resource allocation unit 11b in the control channel of the next subframe, and the data channel of the same subframe Including the transport block TB2, the control information and the transport block TB2 are transmitted to the communication unit 22 of the mobile terminal 2 using the secondary cell at the next boundary timing of the time frame in the secondary cell.
2 and 3, the control information and the transport block TB2 are transmitted to the communication unit 22 of the mobile terminal 2 at the second boundary timing “∧” from the left.

However, when the delay time D is 0, as shown in FIG. 2, the TB construction process for storing information data in the transport block TB1 and the TB construction process for storing information data in the transport block TB2 are the same timing. Therefore, the transmission processing of the transport block TB2 and the like by the transmission unit 13a of the base station 13 is performed at the same timing as the transmission processing of the transport block TB1 and the like by the transmission unit 12a of the base station 12.
When the delay time D is T / 2, as shown in FIG. 3, the TB construction process for storing the information data in the transport block TB1 is completed at the timing when the TB construction process for storing the information data in the transport block TB2 is completed. Is delayed by a time of T / 2 from the completion timing, the timing at which the transmission processing of the transport block TB2 and the like by the transmission unit 13a of the base station 13 is started is the transport block TB1 and the like by the transmission unit 12a of the base station 12 Is delayed by a time of T / 2 from the timing at which the transmission process is started.

As is apparent from the above, according to the first embodiment, the control device 11 starts the allocation determination process for the communication resource amount Rs1 allocated to the first radio signal at the time frame boundary timing in the primary cell. Since the allocation determination process for the communication resource amount allocated to the second radio signal is started at the timing when the delay time D has elapsed from the boundary timing of the time frame, without increasing the processing capability of the control device 11, There is an effect that the communication resource amount allocation determination process can be performed.
That is, the control device 11 can simultaneously execute the processing capacity capable of executing the processing load in the allocation determination process for the communication resource amount Rs1 and the processing load in the allocation determination process for the communication resource amount Rs2 during the time of T / 2. There is no need to have the ability. Therefore, even when performing carrier aggregation using the primary cell and the secondary cell, the control device 11 only needs to have a processing capability capable of executing the processing load in the allocation determination processing of the communication resource amount Rs1, for example. There is no need to increase processing power.

Although the timing delay unit 15 is inserted between the reference timing source 14 and the base station 13 in the first embodiment, the timing delay unit 15 is replaced with the reference timing source 14 as shown in FIG. And the base station 12 may be inserted.
FIG. 4 is a block diagram showing another mobile communication system according to Embodiment 1 of the present invention. In FIG. 4, the same reference numerals as those in FIG.
When the timing delay unit 15 is inserted between the reference timing source 14 and the base station 12, the secondary cell is treated as the first cell and the primary cell is treated as the second cell.

Therefore, when the transmission unit 13a of the base station 13 receives the timing signal Tim _ref from the reference timing source 14, the boundary timing of the time frame in the secondary cell matches the reference timing indicated by the timing signal Tim _ref . Set the time of the reference clock that you have.
The receiving unit 13b of the base station 13 transfers the timing signal Tim _ref output from the reference timing source 14 to the receiving unit 11a of the control device 11 as a timing signal Tim2 indicating the time frame boundary timing in the secondary cell.

When receiving the timing signal Tim _ref from the reference timing source 14, the timing delay unit 15 _assumes that the boundary timing of the time frame in the secondary cell matches the reference timing indicated by the timing signal Tim _ref. A delay time D from the frame boundary timing is set.
When the delay time D is set, the timing delay unit 15 delays the timing signal Tim _ref output from the reference timing source 14 by the delay time D, and outputs the delayed timing signal Tim _ref to the time frame boundary timing in the primary cell. Is output to the base station 12 as a timing signal Tim1.

When the transmission unit 12a of the base station 12 receives the timing signal Tim1 from the timing delay unit 15, the transmission unit 12a of the reference clock of its own so that the boundary timing of the time frame in the primary cell matches the timing indicated by the timing signal Tim1. Set the time.
The receiving unit 12b of the base station 12 transfers the timing signal Tim1 output from the timing delay unit 15 to the receiving unit 11a of the control device 11.

Thereby, in the resource allocation unit 11b of the control device 11, the communication resource amount Rs2 allocated to the second radio signal at the boundary timing of the time frame in the secondary cell indicated by the timing signal Tim2 transferred from the reception unit 13b of the base station 13 Allocation determination processing of the communication resource amount Rs1 allocated to the first radio signal at the time frame boundary timing in the primary cell indicated by the timing signal Tim1 transferred from the receiving unit 12b of the base station 12 To start.
Also in this case, the control device 11 only needs to have a processing capability capable of executing the processing load in the allocation determination processing of the communication resource amount Rs1, for example, and it is not necessary to increase the processing capability of the control device 11.

In the first embodiment, the timing delay unit 15 is inserted between the reference timing source 14 and the base station 13. However, as shown in FIG. It may be inserted between the timing source 14 and the base station 13 and may be inserted between the reference timing source 14 and the base station 12.
5 is a block diagram showing another mobile communication system according to Embodiment 1 of the present invention. In FIG. 5, the same reference numerals as those in FIG.
In this case, two timing delay units are provided so that the allocation determination process for the communication resource amount Rs1 allocated to the first radio signal and the allocation determination process for the communication resource amount Rs2 allocated to the second radio signal are performed serially. 15 may set the delay time D.

The delay time set by the timing delay unit 15 inserted between the reference timing source 14 and the base station 12 is D1, and the delay time set by the timing delay unit 15 inserted between the reference timing source 14 and the base station 13 is set. Assuming that D2 is, for example, if the time difference between the delay time D1 and the delay time D2 is T / 2, the allocation determination process of the communication resource amount Rs1 allocated to the first radio signal and the communication resource allocated to the second radio signal The allocation determination process for the quantity Rs2 is performed serially.
Also in this case, the control device 11 only needs to have a processing capability capable of executing the processing load in the allocation determination processing of the communication resource amount Rs1, for example, and it is not necessary to increase the processing capability of the control device 11.

Embodiment 2. FIG.
In the first embodiment, the timing delay unit 15 is inserted between the reference timing source 14 and the base station 13, but the timing delay unit 16 is connected to the base station 13 as shown in FIG. It may be inserted between the control devices 11.

6 is a block diagram showing a mobile communication system according to Embodiment 2 of the present invention. In FIG. 6, the same reference numerals as those in FIG.
In the second embodiment, the primary cell is treated as the first cell and the secondary cell is treated as the second cell.
In the second embodiment, the receiving unit 13 b of the base station 13 transfers the timing signal Tim _ref output from the reference timing source 14 to the timing delay unit 16.
The timing delay unit 16 includes, for example, a delay circuit, and sets a delay time D as in the timing delay unit 15 of FIG.
In addition, the timing delay unit 16 delays the timing signal Tim _ref transferred from the receiving unit 13b of the base station 13 by the delay time D, and the delayed timing signal Tim _ref is a timing signal indicating the boundary timing of the time frame in the secondary cell. It transmits to the receiving part 11a of the control apparatus 11 as Tim2.
Note that the timing delay unit 16 is realized by the timing delay circuit 55 of FIG. 16 in the same manner as the timing delay unit 15 of FIG.

Next, the operation will be described.
The reference timing source 14 outputs a timing signal Tim _ref indicating the reference timing to the base stations 12 and 13.
When the transmission unit 12a of the base station 12 receives the timing signal Tim _ref from the reference timing source 14, the transmission unit 12a has the self timing so that the boundary timing of the time frame in the primary cell matches the reference timing indicated by the timing signal Tim _ref. Set the time of the reference clock.
The receiving unit 12b of the base station 12 transfers the timing signal Tim _ref output from the reference timing source 14 to the receiving unit 11a of the control device 11 as the timing signal Tim1 indicating the time frame boundary timing in the primary cell.

When the transmission unit 13a of the base station 13 receives the timing signal Tim _ref from the reference timing source 14, the transmission unit 13a has the self timing so that the boundary timing of the time frame in the secondary cell matches the reference timing indicated by the timing signal Tim _ref. Set the time of the reference clock.
The receiving unit 13 b of the base station 13 transfers the timing signal Tim _ref output from the reference timing source 14 to the timing delay unit 16.

The timing delay unit 16 sets a delay time D in the same manner as the timing delay unit 15 in FIG.
Also in the second embodiment, it is assumed that the delay time D is set to T / 2 as in the first embodiment.
When the timing delay unit 16 receives the timing signal Tim _ref from the receiving unit 13b of the base station 13, the timing delay unit 16 delays the timing signal Tim _ref by the delay time D, and transmits the delayed timing signal Tim _ref to the time frame in the secondary cell. It transmits to the receiving part 11a of the control apparatus 11 as timing signal Tim2 which shows boundary timing.

Thereby, when the delay time D is 0, the time frame in the primary cell and the time frame in the secondary cell are synchronized, and therefore the boundary timing and frame number of the time frame in the primary cell and the secondary cell match.
However, when the delay time D is greater than 0, the time frame boundary timing and the frame number in the primary cell and the secondary cell do not match.
For example, when the subframe time of the time frame in the primary cell and the secondary cell is T and the delay time D is T / 2, the boundary timing and frame number of the time frame in the secondary cell are It will be delayed by T / 2 from the boundary timing and frame number.
In the second embodiment, the allocation determination process of the communication resource amount Rs1 allocated to the first radio signal and the communication resource amount allocated to the second radio signal without increasing the processing capability of the resource allocation unit 11b in the control device 11 Since the purpose is to be able to execute the allocation determination process for Rs2, the delay time D is not set to 0, and for example, the delay time D is set to T / 2.

The receiving unit 11a of the control device 11 receives control information indicating the reception quality of the transport block TB1 transferred from the receiving unit 12b of the base station 12, and a timing signal Tim1 indicating the boundary timing of the time frame in the primary cell. .
In addition, the reception unit 11a of the control device 11 receives control information indicating the reception quality of the transport block TB2 transferred from the reception unit 13b of the base station 13, and a timing signal Tim2 indicating the boundary timing of the time frame in the secondary cell. Receive.

FIG. 7 is a timing chart showing the processing timing of the resource allocation unit 11b in the control device 11 and the processing timing of the transmission units 12a and 13a in the base stations 12 and 13.
In FIG. 7, “Δ” indicates the time frame boundary timing in the primary cell, and “∧” indicates the time frame boundary timing in the secondary cell.

The resource allocation unit 11b of the control device 11 starts allocation determination processing of the communication resource amount Rs1 allocated to the first radio signal at the time frame boundary timing in the primary cell indicated by the timing signal Tim1 received by the reception unit 11a. . In FIG. 7, the allocation determination process for the communication resource amount Rs1 is expressed as “resource allocation (a)”.
Further, the resource allocation unit 11b of the control device 11 performs an allocation determination process for the communication resource amount Rs2 allocated to the second radio signal at the time frame boundary timing in the secondary cell indicated by the timing signal Tim2 received by the reception unit 11a. Start. In FIG. 7, the allocation determination process for the communication resource amount Rs2 is expressed as “resource allocation (b)”.

When the delay time D is T / 2, as shown in FIG. 7, the allocation determination process for the communication resource amount Rs2 is started at the timing when the allocation determination process for the communication resource amount Rs1 is completed.
Therefore, when the delay time D is 0, the resource allocation unit 11b necessary for performing the allocation determination process for the communication resource amount Rs1 and the allocation determination process for the communication resource amount Rs2 in the processing time of T / 2. Assuming that the processing capacity is 100%, if the delay time D is T / 2, and if the resource allocation unit 11b has a processing capacity of 50%, the allocation determination process for the communication resource amounts Rs1 and Rs2 is set to T / 2 treatment times.

When the allocation determination process for the communication resource amount Rs1 by the resource allocation unit 11b is completed, the transmission unit 11c of the control device 11 transmits the communication resource amount Rs1 determined by the resource allocation unit 11b to the transmission unit 12a of the base station 12.
Further, the transmission unit 11c of the control device 11 transmits the communication resource amount Rs2 determined by the resource allocation unit 11b to the transmission unit 13a of the base station 13 when the allocation determination process of the communication resource amount Rs2 by the resource allocation unit 11b is completed. To do.

When the transmission unit 12a of the base station 12 receives the communication resource amount Rs1 from the transmission unit 11c of the control device 11, the transmission resource amount Rs1 is selected from the information data transmitted to the mobile terminal 2 as the first radio signal. The information data corresponding to the corresponding data size is cut out.
Then, the transmission unit 12a of the base station 12 performs a TB construction process for storing the extracted information data in the transport block TB1. In FIG. 7, the TB construction process for storing the cut out information data in the transport block TB1 is represented as “TB construction (a)”.
As shown in FIG. 7, the start timing of the TB construction process for storing the information data in the transport block TB1 is the timing immediately after the allocation determination process for the communication resource amount Rs1 is completed regardless of the delay time D.
FIG. 7 shows an example in which the processing time of this TB construction processing is T / 2, and the total processing time of the allocation determination processing of the communication resource amount Rs1 and the TB construction processing is the subframe of the time frame in the primary cell. It coincides with the frame time T.

When the transmission unit 13a of the base station 13 receives the communication resource amount Rs2 from the transmission unit 11c of the control device 11, the transmission resource amount Rs2 is selected from the information data transmitted to the mobile terminal 2 as the second radio signal. The information data corresponding to the corresponding data size is cut out.
Then, the transmission unit 13a of the base station 13 performs TB construction processing for storing the extracted information data in the transport block TB2. In FIG. 7, the TB construction process for storing the cut out information data in the transport block TB2 is expressed as “TB construction (b)”.
As shown in FIG. 7, the start timing of the TB construction process for storing information data in the transport block TB2 is the timing immediately after the allocation determination process for the communication resource amount Rs2 is completed, regardless of the delay time D.
When the delay time D is T / 2, as shown in FIG. 7, the allocation determination process for the communication resource amount Rs2 is started at the timing when the allocation determination process for the communication resource amount Rs1 is completed. At the timing when the TB construction process stored in the port block TB1 is completed, the TB construction process for storing information data in the transport block TB2 is started.

When the TB construction process is completed, the transmitting unit 12a of the base station 12 includes control information indicating the communication resource amount Rs1 determined by the resource allocating unit 11b in the control channel of the next subframe, and the data channel of the same subframe Including the transport block TB1, the control information and the transport block TB1 are transmitted to the communication unit 21 of the mobile terminal 2 using the primary cell at the next boundary timing of the time frame in the primary cell.
In the example of FIG. 7, the control information and the transport block TB1 are transmitted to the communication unit 21 of the mobile terminal 2 at the second boundary timing “Δ” from the left.

When the TB construction process is completed, the transmission unit 13a of the base station 13 includes the control information indicating the communication resource amount Rs2 determined by the resource allocation unit 11b in the control channel of the next subframe, and the data channel of the same subframe Including the transport block TB2, the control information and the transport block TB2 are transmitted to the communication unit 22 of the mobile terminal 2 using the secondary cell at the next boundary timing of the time frame in the secondary cell.
In the example of FIG. 7, the control information and the transport block TB2 are transmitted to the communication unit 22 of the mobile terminal 2 at the third boundary timing “か ら” from the left.

As apparent from the above, according to the second embodiment, the control device 11 starts the allocation determination process for the communication resource amount Rs1 to be allocated to the first radio signal at the time frame boundary timing in the primary cell. Since the allocation determination process for the communication resource amount allocated to the second radio signal is started at the timing when the delay time D has elapsed from the boundary timing of the time frame, without increasing the processing capability of the control device 11, There is an effect that the communication resource amount allocation determination process can be performed.
That is, the control device 11 can simultaneously execute the processing capacity capable of executing the processing load in the allocation determination process for the communication resource amount Rs1 and the processing load in the allocation determination process for the communication resource amount Rs2 during the time of T / 2. There is no need to have the ability. Therefore, even when performing carrier aggregation using the primary cell and the secondary cell, the control device 11 only needs to have a processing capability capable of executing the processing load in the allocation determination processing of the communication resource amount Rs1, for example. There is no need to increase processing power.

In the second embodiment, the timing delay unit 16 is inserted between the base station 13 and the control device 11, but the timing delay unit 16 controls the base station 12 as shown in FIG. It may be inserted between the devices 11.
FIG. 8 is a block diagram showing another mobile communication system according to Embodiment 2 of the present invention. In FIG. 8, the same reference numerals as those in FIG.
When the timing delay unit 16 is inserted between the base station 12 and the control device 11, the secondary cell is treated as the first cell and the primary cell is treated as the second cell.

The receiving unit 12 b of the base station 12 transfers the timing signal Tim _ref output from the reference timing source 14 to the timing delay unit 16.
When the timing delay unit 16 receives the timing signal Tim _ref from the receiving unit 12b of the base station 12, the timing delay unit 16 delays the timing signal Tim _ref by a delay time D, and transmits the delayed timing signal Tim _ref of the time frame in the primary cell. It transmits to the receiving part 11a of the control apparatus 11 as timing signal Tim1 which shows boundary timing.
The receiving unit 13b of the base station 13 transfers the timing signal Tim _ref output from the reference timing source 14 to the receiving unit 11a of the control device 11 as a timing signal Tim2 indicating the time frame boundary timing in the secondary cell.

Thereby, in the resource allocation unit 11b of the control device 11, the communication resource amount Rs2 allocated to the second radio signal at the boundary timing of the time frame in the secondary cell indicated by the timing signal Tim2 transferred from the reception unit 13b of the base station 13 After the allocation determination process is started, the allocation determination process for the communication resource amount Rs1 allocated to the first radio signal is started at the time frame boundary timing in the primary cell indicated by the timing signal Tim1 transmitted from the timing delay unit 16. .
Also in this case, the control device 11 only needs to have a processing capability capable of executing the processing load in the allocation determination processing of the communication resource amount Rs1, for example, and it is not necessary to increase the processing capability of the control device 11.

In the second embodiment, the timing delay unit 16 is inserted between the base station 13 and the control device 11. However, as shown in FIG. And the timing delay unit 16 may be inserted between the base station 12 and the control device 11.
FIG. 9 is a block diagram showing another mobile communication system according to Embodiment 2 of the present invention. In FIG. 9, the same reference numerals as those in FIG.
In this case, two timing delay units are provided so that the allocation determination process for the communication resource amount Rs1 allocated to the first radio signal and the allocation determination process for the communication resource amount Rs2 allocated to the second radio signal are performed serially. 16 may set the delay time D.

The delay time set by the timing delay unit 16 inserted between the base station 13 and the control device 11 is D1, and the delay time set by the timing delay unit 16 inserted between the base station 12 and the control device 11 is D2. Then, for example, if the time difference between the delay time D1 and the delay time D2 is T / 2, the allocation determination process for the communication resource amount Rs1 assigned to the first radio signal and the communication resource amount Rs2 assigned to the second radio signal The allocation determination process is executed serially.
Also in this case, the control device 11 only needs to have a processing capability capable of executing the processing load in the allocation determination processing of the communication resource amount Rs1, for example, and it is not necessary to increase the processing capability of the control device 11.

In the second embodiment, the transmission units 12a and 13a of the base stations 12 and 13 perform the TB construction process. However, the transmission unit 11c of the control device 11 performs the TB construction process. Also good.
Hereinafter, the processing content when the transmission part 11c of the control apparatus 11 implements TB construction processing will be described. For convenience of explanation, it is assumed that the configuration diagram of the mobile communication system is FIG.
FIG. 10 is a timing chart showing the processing timing of the resource allocation unit 11 b in the control device 11 and the processing timing of the transmission units 12 a and 13 a in the base stations 12 and 13.
In FIG. 10, SF # 0, SF # 1, and SF # 2 indicate subframe numbers.

When the resource allocation unit 11b of the control device 11 receives the timing signal Tim1 indicating the boundary timing of the time frame in the primary cell from the reception unit 12b of the base station 12, the allocation determination process of the communication resource amount Rs1 allocated to the first radio signal To start.
In the example of FIG. 10, the allocation determination process for the communication resource amount Rs1 to be allocated to the first radio signal is started at the subframe boundary timing of SF # 0.
When the allocation determination process for the communication resource amount Rs1 assigned to the first radio signal is completed, the resource assignment unit 11b of the control device 11 outputs an assignment result message including the subframe number and the communication resource amount Rs1 to the transmission unit 11c.

In addition, when the resource allocation unit 11b of the control device 11 receives the timing signal Tim2 indicating the boundary timing of the time frame in the secondary cell from the timing delay unit 16, the resource allocation unit 11b performs allocation determination processing for the communication resource amount Rs2 allocated to the second radio signal. Start.
In the example of FIG. 10, the allocation determination process for the communication resource amount Rs2 to be allocated to the second radio signal is started at a timing later by T / 2 than the subframe boundary timing of SF # 0.
When the allocation determination process for the communication resource amount Rs2 to be allocated to the second radio signal is completed, the resource allocation unit 11b of the control device 11 outputs an allocation result message including the subframe number and the communication resource amount Rs2 to the transmission unit 11c.

FIG. 11 is an explanatory diagram showing an allocation result message including a subframe number and a communication resource amount.
The subframe number included in the allocation result message is a number for identifying a subframe in which the control information indicating the communication resource amount Rs1 or Rs2 and the transport block TB1 or TB2 are included.
In the example of FIG. 10, the subframe number included in the allocation result message is SF # 2.

When the transmission unit 11c of the control device 11 receives the allocation result message for the allocation determination process for the communication resource amount Rs1 from the resource allocation unit 11b, it transmits the first radio signal from the information data to be transmitted to the mobile terminal 2. Information data corresponding to the data size corresponding to the communication resource amount Rs1 included in the allocation result message is cut out.
And the transmission part 11c of the control apparatus 11 implements TB construction | assembly process which stores the cut-out information data in transport block TB1. In FIG. 10, the TB construction process for storing the cut-out information data in the transport block TB1 is represented as “TB construction (a)”.
When the TB construction process is completed, the transmission unit 11c of the control device 11 transmits the subframe number SF # 2, the communication resource amount Rs1, and the transport block TB1 included in the allocation result message to the base station 12. It outputs to the transmission part 12a.

When the transmission unit 11c of the control device 11 receives the allocation result message for the allocation determination process for the communication resource amount Rs2 from the resource allocation unit 11b, the transmission unit 11c transmits the second radio signal from the information data to be transmitted to the mobile terminal 2. The information data corresponding to the data size corresponding to the communication resource amount Rs2 included in the allocation result message is cut out.
And the transmission part 11c of the control apparatus 11 implements TB construction | assembly process which stores the cut-out information data in transport block TB2. In FIG. 10, the TB construction process for storing the cut out information data in the transport block TB2 is expressed as “TB construction (b)”.
When the TB construction process is completed, the transmission unit 11c of the control device 11 transmits the subframe number SF # 2, the communication resource amount Rs2, and the transport block TB2 included in the allocation result message to the base station 13. It outputs to the transmission part 13a.

Upon receiving the frame number SF # 2, the communication resource amount Rs1, and the transport block TB1 from the transmission unit 11c of the control device 11, the transmission unit 12a of the base station 12 sends the control channel in the subframe of the subframe number SF # 2 to the control channel. Including the control information indicating the communication resource amount Rs1, the transport block TB1 is included in the data channel in the subframe of the subframe number SF # 2.
Then, the transmission unit 12a of the base station 12 transmits the control information and the transport block TB1 to the communication unit 21 of the mobile terminal 2 using the primary cell.

When receiving the frame number SF # 2, the communication resource amount Rs2, and the transport block TB2 from the transmission unit 11c of the control device 11, the transmission unit 13a of the base station 13 sets the control channel in the subframe of the subframe number SF # 2. Including the control information indicating the communication resource amount Rs2, the transport block TB2 is included in the data channel in the subframe of the subframe number SF # 2.
And the transmission part 13a of the base station 13 transmits the control information and transport block TB2 to the communication part 22 of the mobile terminal 2 using a secondary cell.

Here, the timing at which the transmission unit 12a of the base station 12 transmits the control information and the transport block TB1 to the communication unit 21 of the mobile terminal 2 using the primary cell is 2 from the subframe boundary timing of SF # 0. The example which is a next sub-frame is shown.
However, this is merely an example. For example, if the subframe is one subframe ahead of the subframe boundary timing of SF # 0, the timing is the same as the timing chart shown in FIG.

Embodiment 3 FIG.
In the first embodiment, as shown in FIG. 3, the resource allocation unit 11b of the control device 11 starts the allocation determination process for the communication resource amount Rs1 allocated to the first radio signal, and then the transmission of the base station 12 The time required for the transmission of the transport block TB1 and the like by the unit 12a is 2T. Also, the time required for the transmission of the transport block TB2 and the like by the transmission unit 13a of the base station 13 after the start of the allocation determination process for the communication resource amount Rs2 allocated to the second radio signal is 2T. It is. Therefore, there is no difference in the required time between the two.

In contrast, in the second embodiment, as illustrated in FIG. 7, after the resource allocation unit 11b of the control device 11 starts the allocation determination process for the communication resource amount Rs1 allocated to the first radio signal, The time required for the transmission of the transport block TB1 and the like by the transmission unit 12a of the base station 12 is 2T. In addition, the time required for the transmission of the transport block TB2 and the like by the transmission unit 13a of the base station 13 after the start of the allocation determination process for the communication resource amount Rs2 to be allocated to the second radio signal is 2.5T. Is the time. Therefore, there is a difference in the required time between them, and the communication delay time at the base station 13 is increased as compared with the base station 12.

When the transmission application by the base stations 12 and 13 is an application such as a file transfer, for example, it is considered that there is little problem in practical use. There may be cases where an increase in time is not allowed.
In the third embodiment, a mobile communication system capable of suppressing an increase in communication delay time for information data requiring low delay will be described.
That is, in the third embodiment, if the allowable delay time of the information data transmitted from the control device 11 to the mobile terminal 2 is the first delay time, the information data is included in the first radio signal, and the mobile terminal If the allowable delay time of the information data to be transmitted to the second delay time is longer than the first delay time, the information data is included in the second radio signal.
A mobile communication system that determines the communication resource amount Rs1 to be allocated to the first radio signal and determines the communication resource amount Rs2 to be allocated to the second radio signal will be described.

FIG. 12 is a block diagram showing a mobile communication system according to Embodiment 3 of the present invention. In FIG. 12, the same reference numerals as those in FIG.
If the downlink request delay class corresponding to the information data transmitted to the mobile terminal 2 is a low delay class, the resource allocation unit 11d of the control device 11 includes the information data in the first radio signal and transmits the information data to the mobile terminal 2. If the downlink request delay class corresponding to the information data is the high delay class, the information data is included in the second radio signal. Low delay class information data means information data with a small allowable delay time, high delay class information data, and information data with a large allowable delay time.
Similarly to the resource allocation unit 11b of FIG. 6, the resource allocation unit 11d of the control device 11 determines the allocation of the communication resource amount Rs1 allocated to the first radio signal at the timing when the timing signal Tim1 is received by the reception unit 11a. The process is started, and the allocation determination process for the communication resource amount Rs2 to be allocated to the second radio signal is started at the timing when the reception unit 11a receives the timing signal Tim2.

Here, an example is shown in which the resource allocating unit 11d of the control device 11 is applied to the mobile communication system of FIG. 6, but this is only an example, and for example, it is applied to the mobile communication system of FIG. It may be.
Further, the resource allocation unit 11d of the control device 11 may be applied to the mobile communication system of FIG. 4 or FIG. 8, but in this case, the resource allocation unit 11d transmits information data to the mobile terminal 2 If the downlink request delay class corresponding to is a low delay class, the information data is included in the second radio signal, and if the downlink request delay class corresponding to the information data transmitted to the mobile terminal 2 is a high delay class, The information data is included in the first wireless signal.

The delay class output unit 24 performs a process of outputting a downlink request delay class corresponding to the data form of the information data to the control unit 23.
Similarly to the first and second embodiments, the control unit 23 controls the transmission units 21b and 22b of the communication units 21 and 22 to indicate the reception quality measured by the reception units 21a and 22a of the communication units 21 and 22. In addition to performing control such as outputting a command to transmit information, the downlink request delay class output from the delay class output unit 24 is transmitted to the downlink request delay via the transmission units 21b and 22b of the communication units 21 and 22. The class is transmitted to the base station apparatus 1.

FIG. 13 is a configuration diagram showing the delay class output unit 24 of the mobile terminal 2.
In FIG. 13, the client unit 31 is composed of, for example, a semiconductor integrated circuit on which a CPU is mounted, a one-chip microcomputer, or the like. The data form of information data communicated by an application executed by the mobile terminal 2 is a delay class. Processing to output to the setting unit 33 is performed.
As an application executed by the mobile terminal 2, for example, an application for performing a chat service can be considered, and as a data form of the information data, characters, voices, videos, files, and the like are considered.

The delay class storage unit 32 is realized by a storage device such as a RAM or a hard disk, for example, and stores a downlink request delay class corresponding to the data form of the information data.
For example, if the data form of information data communicated by an application is audio or video, a low delay class with a small allowable delay time is stored as a downlink request delay class, and the data form of information data is a character or file. If there is, a high delay class having a large allowable delay time is stored as the downlink request delay class.
However, the downlink request delay class corresponding to the data form stored in the delay class storage unit 32 is merely an example.

The delay class setting unit 33 is composed of, for example, a semiconductor integrated circuit on which a CPU is mounted, a one-chip microcomputer, or the like, and the client unit 31 out of the downlink request delay classes stored in the delay class storage unit 32. The downlink request delay class corresponding to the data form output from is acquired, and the downlink request delay class is output to the control unit 23.

Next, the operation will be described.
The client unit 31 of the delay class output unit 24 in the mobile terminal 2 outputs a data form of information data communicated by an application executed by the mobile terminal 2 to the delay class setting unit 33.
When the delay class setting unit 33 of the delay class output unit 24 receives the data form of the information data from the client unit 31, the delay class setting unit 33 corresponds to the data form from among the downlink request delay classes stored in the delay class storage unit 32. Get downlink request delay class.
For example, if the data form of the information data communicated by the application is audio or video, a low delay class with a small allowable delay time is acquired as the downlink request delay class.
If the data form of the information data communicated by the application is a character or a file, a high delay class having a large allowable delay time is acquired as the downlink request delay class.

When the delay class setting unit 33 of the delay class output unit 24 acquires the downlink request delay class corresponding to the data form of the information data, as shown in FIG. 14, the delay including the information data ID (IDentification) and the downlink request delay class The class message is output to the control unit 23 as control information. The information data ID is an ID for identifying information data.
FIG. 14 is an explanatory diagram showing a delay class message including an information data ID and a downlink request delay class.
When receiving control information that is a delay class message from the delay class setting unit 33 of the delay class output unit 24, the control unit 23 outputs the control information to the communication unit 21.
When receiving the control information that is a delay class message from the control unit 23, the transmission unit 21b of the communication unit 21 includes the control information in the uplink control channel of the time frame in the primary cell and uses the primary cell to control the control information. Is transmitted to the base station 12.

Here, the control unit 23 outputs the control information, which is a delay class message, to the communication unit 21, but the control information may be output to the communication unit 22.
When receiving the control information that is a delay class message from the control unit 23, the transmission unit 22b of the communication unit 22 includes the control information in the uplink control channel of the time frame in the secondary cell, and uses the secondary cell to control the control information. Is transmitted to the base station 13.
In this example, the control information is included in the control channel, but the control information may be included in the data channel.

When receiving the control information that is a delay class message transmitted from the communication unit 21 of the mobile terminal 2, the receiving unit 12 b of the base station 12 transfers the control information to the control device 11.
The receiving unit 11a of the control device 11 receives the control information transferred by the receiving unit 12b of the base station 12, and outputs the control information to the resource allocating unit 11d.
If the downlink request delay class included in the control information output from the receiving unit 11a of the control device 11 is a low delay class, the resource allocation unit 11d of the control device 11 includes information data included in the control information. Information data indicated by the ID is included in the first radio signal.
If the downlink request delay class included in the control information output from the reception unit 11a of the control device 11 is a high delay class, the resource allocation unit 11d of the control device 11 includes information data included in the control information. Information data indicated by the ID is included in the second radio signal.
FIG. 15 is a flowchart showing the processing contents of the resource allocation unit 11d in the control device 11.
Hereinafter, the processing content of the resource allocation unit 11d will be described in detail with reference to FIG.

The resource allocation unit 11 d of the control device 11 receives the control information that is a delay class message transmitted from the reception unit 12 b of the base station 12 by the reception unit 11 a of the control device 11, thereby receiving the control information from the reception unit 11 a of the control device 11. When the control information is received (step ST1: YES in FIG. 15), it is determined whether or not the downlink request delay class included in the control information is a low delay class (step ST2).
If the downlink request delay class included in the control information is a low delay class (step ST2: YES), the resource allocation unit 11d includes the control information among a plurality of information data to be transmitted to the mobile terminal 2. Is included in the first radio signal (step ST3).
If the downlink request delay class included in the control information is the high delay class (step ST2: NO), the resource allocation unit 11d controls the control information among a plurality of information data to be transmitted to the mobile terminal 2. Is included in the second radio signal (step ST4).

When the receiving unit 11a of the control device 11 has not received control information that is a delay class message transmitted from the receiving unit 12b of the base station 12 (step ST1: NO), the resource allocating unit 11d By receiving the timing signal Tim1 transmitted from the receiving unit 12b, and receiving the timing signal Tim1 from the receiving unit 11a of the control device 11 (step ST5: YES), similarly to the resource allocation unit 11b of FIG. Then, at the timing when the reception unit 11a receives the timing signal Tim1, the allocation determination process for the communication resource amount Rs1 assigned to the first radio signal is started to determine the communication resource amount Rs1 (step ST6).

When the resource allocation unit 11d determines the communication resource amount Rs1 to be allocated to the first radio signal, the resource allocation unit 11d uses the communication resource of the primary cell to transmit information data corresponding to the data size corresponding to the communication resource amount Rs1. In step ST7, it is determined whether there is still a remaining communication resource in the primary cell.
When there is a residual in the communication resource of the primary cell (in the case of YES at step ST7), the resource allocation unit 11d determines the remaining data size in the communication resource of the primary cell among the information data included in the second radio signal. Information data equal to or smaller than the same size is included in the first radio signal, the allocation determination process for the communication resource amount Rs1 to be allocated to the first radio signal is started, and the communication resource amount Rs1 is determined (step ST8).
If there is no remaining communication resource of the primary cell (step ST7: NO), the resource allocation unit 11d returns to the process of step ST1.

When the receiving unit 11a of the control device 11 has not received control information that is a delay class message transmitted from the receiving unit 12b of the base station 12 (step ST1: NO), the resource allocating unit 11d 16 receives the timing signal Tim2 from the receiving unit 11a of the control device 11 by receiving the timing signal Tim2 (step ST5: NO, step ST9: YES), the resource allocation unit of FIG. Similarly to 11b, at the timing when the reception unit 11a receives the timing signal Tim2, the allocation determination process for the communication resource amount Rs2 to be allocated to the second radio signal is started to determine the communication resource amount Rs2 (step ST10). .
In this communication resource amount Rs2 allocation determination process, in step ST8, information data for which the communication resource amount Rs1 has already been determined is excluded from the processing target.
If the timing signal Tim2 is not received from the receiving unit 11a of the control device 11 (in the case of step ST5: NO, in the case of step ST9: NO), the process returns to step ST1.

As is apparent from the above, according to the third embodiment, if the resource allocation unit 11d of the control device 11 has the downlink request delay class corresponding to the information data transmitted to the mobile terminal 2 as the low delay class, Since the information data is included in the first radio signal and the downlink request delay class corresponding to the information data transmitted to the mobile terminal 2 is a high delay class, the information data is included in the second radio signal. In addition to being able to perform the allocation determination process of the communication resource amount without increasing the processing capacity of the control device 11, it is possible to suppress an increase in communication delay time for information data requiring low delay. .

In the third embodiment, the mobile terminal 2 transmits the delay class message including the downlink request delay class to the base station apparatus 1 as control information using the control channel. However, the base station apparatus 1 moves Before starting the transmission of the first and second radio signals to the terminal 2, the mobile terminal 2 and the base station apparatus 1 implement the call control protocol, so that the delay class message including the downlink request delay class is transmitted. You may make it transmit / receive.

In the third embodiment, the mobile terminal 2 transmits a delay class message including a downlink request delay class indicating a low delay class or a high delay class to the base station apparatus 1 as control information. However, only when the downlink request delay class is a low delay class, a delay class message including the downlink request delay class is transmitted as control information to the base station apparatus 1, and the base station apparatus 1 transmits a delay class message from the mobile terminal 2. If no message is transmitted, it may be determined that the downlink request delay class is a high delay class.
In this case, transmission of a delay class message when the downlink request delay class is a high delay class can be omitted.

In the third embodiment, an example is shown in which the downlink request delay class is classified into two classes of a low delay class and a high delay class. However, the downlink request delay class is classified into three or more classes. May be.
When the downlink request delay class is classified into three or more classes, it can be applied to, for example, a mobile communication system using three or more types of cells.

In the third embodiment, the base stations 12 and 13 transmit the control information indicating the communication resource amounts Rs1 and Rs2 and the transport blocks TB1 and TB2 to the mobile terminal 2, but the control device 11 The communication delay time of the first radio signal in the primary cell and the communication delay time of the second radio signal in the secondary cell may be notified to the base stations 12 and 13 and the mobile terminal 2.

For example, the control device 11 refers to a delay time from the time frame boundary timing in the primary cell to the time required to complete transmission of the control information and the transport block TB1 (hereinafter referred to as “primary cell side downlink transmission delay time”). A message including the delay time from the boundary timing of the time frame in the secondary cell to the completion of transmission of the control information and transport block TB2 (hereinafter referred to as “downlink transmission delay time on the secondary cell side”) A message including “
The base station 12 transmits a message including the downlink transmission delay time on the primary cell side output from the control device 11 to the mobile terminal 2, and the base station 13 transmits the downlink transmission delay on the secondary cell side output from the control device 11. A message including the time is transmitted to the mobile terminal 2.
When the mobile terminal 2 receives the message transmitted from the base station 12, the mobile terminal 2 recognizes the downlink transmission delay time on the primary cell side included in the message, and receives the message transmitted from the base station 13, the message The downstream transmission delay time on the secondary cell side included in the can be recognized.

At this time, if the mobile terminal 2 holds a table in which the data form of the information data output from the client unit 31 is associated with the allowable maximum value of the communication delay time, the mobile terminal 2 By comparing the allowable maximum value of the communication delay time corresponding to the data form with the downlink transmission delay time included in the message transmitted from the base station 12 or 13, the downlink transmission delay time is within the allowable maximum value. It becomes possible to select a cell.
For example, the downlink transmission delay time on the secondary cell side is larger than the maximum allowable communication delay time, but if the downlink transmission delay time on the primary cell side is within the maximum allowable communication delay time, the downlink transmission delay time is allowed. The primary cell can be selected as a cell that is within the maximum value.

At this time, if the resource allocation unit 11d of the control device 11 is configured to store the correspondence between the data form of the information data and the cell with reference to the control information transmitted from the mobile terminal 2, the resource allocation If the cell corresponding to the data form of the information data transmitted to the mobile terminal 2 is a primary cell with reference to the stored correspondence, the unit 11d may include the information data in the first radio signal. it can.
Moreover, if the cell corresponding to the data form of the information data transmitted to the mobile terminal 2 is a secondary cell, the resource allocation unit 11d can include the information data in the second radio signal.

Here, the base station 12 transmits a message including the downlink transmission delay time on the primary cell side to the mobile terminal 2, and the base station 13 transmits a message including the downlink transmission delay time on the secondary cell side to the mobile terminal 2. Although shown, the base station 12 may transmit a message including the downlink transmission delay time on the secondary cell side to the mobile terminal 2 in addition to the message including the downlink transmission delay time on the primary cell side. The base station 13 may transmit a message including the downlink transmission delay time on the primary cell side to the mobile terminal 2 in addition to the message including the downlink transmission delay time on the secondary cell side.
Further, the base stations 12 and 13 may deliver a message including the downlink transmission delay time to the mobile terminal 2 in advance by an RRC dedicated signal that is a radio resource control signal.

As a downlink transmission delay time included in a message transmitted from the base station 12 or 13 to the mobile terminal 2, for example, a time such as a microsecond is assumed, but a subframe in a time frame in the primary cell and the secondary cell is assumed. It may be expressed in fractions or decimals with time as unit time.
Further, the downlink transmission delay time included in the message transmitted from the base stations 12 and 13 to the mobile terminal 2 is expressed as an absolute time with a delay amount based on the boundary timing of the time frame in the primary cell or the secondary cell. Can be considered.
Further, the downlink transmission delay time on the secondary cell side may be expressed by a relative time indicating a difference with respect to the downlink transmission delay time on the primary cell side.

The mobile terminal 2, the base stations 12, 13 and the control device 11 may be configured to change the operations related to the primary cell and the secondary cell according to the downlink transmission delay time.
For example, in 3GPP TS 36.213 (clause 8), regarding the HARQ (Hybrid Automatic Repeat reQuest) retransmission control, the number of subframes from the reception of the data channel to the return of the delivery response (ACK / NACK) on the control channel, The number of subframes, the number of retransmission processes, etc., from receipt of a delivery response to retransmission of the data channel are defined.
For example, in the case of FDD (Frequency Division Duplex), the delivery response is defined as 8 processes corresponding to a delay of a total of 8 subframes in a round trip, after 4 subframes for retransmission, and after 4 subframes for retransmission. .

For example, when the processing timing of the resource allocation unit 11d in the control device 11 and the processing timing of the transmission units 12a and 13a in the base stations 12 and 13 are represented by the timing chart of FIG. 7, the time frames in the primary cell and the secondary cell The downstream transmission delay time on the primary cell side is 2T, while the downstream transmission delay time on the secondary cell side is 3T, and the primary cell side downlink transmission delay time is 2T. It is 1T larger than the transmission delay time.
The mobile terminal 2 refers to the downlink transmission delay time included in the messages transmitted from the base stations 12 and 13, so that the downlink transmission delay time on the secondary cell side is only 1T from the downlink transmission delay time on the primary cell side. You can recognize that it is big. For this reason, the mobile terminal 2 may be configured to maintain a delay of a total of 8 subframes in a round trip, for example, by returning a delivery response to the base station 13 earlier than the standard by, for example, 1 subframe.
Alternatively, the control device 11 is configured to apply a received delivery response to the resource allocation process (b) that is, for example, one subframe earlier than the standard so as to maintain a total delay of, for example, 8 subframes. Also good.
Alternatively, the mobile terminal 2 and the control device 11 may transmit and receive a delivery response with the standard number of subframes, and operate by increasing the number of retransmission processes of the secondary cell by, for example, one subframe.

Since the provision of the delivery response, the number of retransmission subframes, and the number of retransmission processes in the case of the TDD (Time Division Duplex) method is more complicated, it will not be described here, but as in the case of the FDD method, The base stations 12 and 13 and the control device 11 can be configured to change the HARQ operation regarding the primary cell and the secondary cell according to the downlink transmission delay time.

In the first, second, and third embodiments, the case where the number of cells simultaneously used in carrier aggregation is two is described. However, three or more cells are used simultaneously, and three or more radio signals are simultaneously transmitted. You may make it transmit.
In the first, second, and third embodiments, the mobile communication system applied to the carrier aggregation standardized by 3GPP has been described. However, the present invention is not limited to the one applied to the carrier aggregation standardized by 3GPP. However, any mobile communication system may be used as long as the base station performs communication using a plurality of component carriers.

In the present invention, within the scope of the invention, any combination of the embodiments, or any modification of any component in each embodiment, or omission of any component in each embodiment is possible. .

In the base station device and the mobile communication system according to the present invention, the control device starts allocation determination processing of the first communication resource amount at a timing between frames in the time frame of the first carrier, and the frame in the time frame Configured to start the second communication resource amount allocation determination process at the timing when the delay time has elapsed from the timing between them, and performed the communication resource amount allocation determination process without increasing the processing capacity of the control device The base station is suitable for use in a mobile communication system in which a base station performs communication using a plurality of component carriers.

1 base station device, 2 mobile terminal, 11 control device, 11a receiving unit, 11b resource allocation unit, 11c transmitting unit, 12 base station, 12a transmitting unit, 12b receiving unit, 13 base station, 13a transmitting unit, 13b receiving unit, 14 reference timing source, 15, 16 timing delay unit, 21 communication unit, 21a reception unit, 21b transmission unit, 22 communication unit, 22a reception unit, 22b transmission unit, 23 control unit, 24 delay class output unit, 31 client unit, 32 delay class storage unit, 33 delay class setting unit, 51 control circuit, 52, 53 base station circuit, 54 timing oscillation circuit, 55 timing delay circuit, 61 memory, 62 processor.

Claims (10)

1. A control device for determining a first communication resource amount to be allocated to the first radio signal and determining a second communication resource amount to be allocated to the second radio signal;
   Using the first carrier wave, a first radio signal including information data for a data size corresponding to the first communication resource amount determined by the control device is transmitted to the mobile terminal, and the second carrier wave is sent to the mobile terminal. And a base station that transmits a second radio signal including information data for a data size corresponding to the second communication resource amount determined by the control device to the mobile terminal,
   The control device starts allocation determination processing of the first communication resource amount at a timing between frames in a time frame of the first carrier wave, and a timing at which a delay time has elapsed from a timing between frames in the time frame Then, the base station apparatus starts the allocation determination process for the second communication resource amount.
2. A delay time from an inter-frame timing in the time frame of the first carrier is set, and a timing at which the delay time has elapsed from an inter-frame timing in the time frame is defined as an inter-frame in the time frame of the second carrier. A timing delay unit that informs the base station as the timing of
   The base station outputs a timing signal indicating the timing notified by the timing delay unit to the control device,
   The base station apparatus according to claim 1, wherein the control apparatus starts the second communication resource amount allocation determination process at a timing indicated by a timing signal output from the base station.
3. A delay time from an inter-frame timing in the time frame of the first carrier is set, and a timing at which the delay time has elapsed from an inter-frame timing in the time frame is defined as an inter-frame in the time frame of the second carrier. A timing delay unit that informs the control device as the timing of
   The base station apparatus according to claim 1, wherein the control apparatus starts the second communication resource amount allocation determination process at a timing notified by the timing delay unit.
4. If the allowable delay time of the information data to be transmitted to the mobile terminal is the first delay time, the control apparatus includes the information data in the first radio signal and allows the information data to be transmitted to the mobile terminal. The base station apparatus according to claim 1, wherein if the delay time is a second delay time longer than the first delay time, the information data is included in the second radio signal.
5. The control apparatus acquires information indicating reception quality of the first radio signal and the second radio signal in the mobile terminal, and determines the first communication resource amount according to the reception quality of the first radio signal. The base station apparatus according to claim 1, wherein the second communication resource amount is determined according to reception quality of the second radio signal.
6. A control device for determining a first communication resource amount to be allocated to the first radio signal and determining a second communication resource amount to be allocated to the second radio signal;
   A first carrier wave is used to transmit a first radio signal including information data corresponding to a data size corresponding to the first communication resource amount determined by the control device, and a second carrier wave is used. A base station that transmits a second radio signal including information data for a data size corresponding to a second communication resource amount determined by the control device;
   A mobile terminal that receives the first radio signal and the second radio signal transmitted from the base station,
   The control device starts allocation determination processing of the first communication resource amount at a timing between frames in a time frame of the first carrier wave, and a timing at which a delay time has elapsed from a timing between frames in the time frame Then, the second communication resource amount allocation determination process is started.
7. A delay time from an inter-frame timing in the time frame of the first carrier is set, and a timing at which the delay time has elapsed from an inter-frame timing in the time frame is defined as an inter-frame in the time frame of the second carrier. A timing delay unit that informs the base station as the timing of
   The base station outputs a timing signal indicating the timing notified by the timing delay unit to the control device,
   7. The mobile communication system according to claim 6, wherein the control device starts assignment determination processing of a communication resource amount to be assigned to the second radio signal at a timing indicated by a timing signal output from the base station. .
8. A delay time from an inter-frame timing in the time frame of the first carrier is set, and a timing at which the delay time has elapsed from an inter-frame timing in the time frame is defined as an inter-frame in the time frame of the second carrier. A timing delay unit that informs the control device as the timing of
   The mobile communication system according to claim 6, wherein the control device starts assignment determination processing of a communication resource amount to be assigned to the second radio signal at a timing notified by the timing delay unit.
9. If the allowable delay time of the information data to be transmitted to the mobile terminal is the first delay time, the control apparatus includes the information data in the first radio signal and allows the information data to be transmitted to the mobile terminal. The mobile communication system according to claim 6, wherein if the delay time is a second delay time longer than the first delay time, the information data is included in the second radio signal.
10. The control apparatus acquires information indicating reception quality of the first radio signal and the second radio signal in the mobile terminal, and determines the first communication resource amount according to the reception quality of the first radio signal. The mobile communication system according to claim 6, wherein the second communication resource amount is determined according to reception quality of the second radio signal.

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