TWI448119B - Radio communication apparatus, radio communication system, and radio communication method - Google Patents

Description

Wireless communication device, wireless communication system and wireless communication method (1) Field of invention

The present invention relates to a wireless communication device, a wireless communication system, and a wireless communication method.

Background of the invention

Nowadays, wireless communication systems such as a mobile phone system or a wireless LAN (Local Area Network) are widely used. In addition, in order to further increase the speed of wireless communication and increase the capacity, the next generation of wireless communication technologies will continue to be actively discussed.

For example, 3GPP (3rd Generation Partnership Project), one of the standardization bodies, proposes a communication specification called LTE (Long Term Evolution), which is capable of wirelessly utilizing a frequency band of up to 20 MHz. Correspondent. In addition, as a next-generation communication standard for LTE, a communication standard called LTE-A (Long Term Evolution-Advanced) is proposed, which is a wireless communicator that can utilize up to five bands of 20 MHz.

Further, in LTE or LTE-A, a data transmission method called MBSFN (Multimedia Broadcast multicast service Single Frequency Network) is reviewed. In MBSFN, a plurality of base stations are at the same timing, and the same frequency is transmitted by the same frequency using the same modulation method. The data transmitted by the MBSFN is called, for example, MBMS (Multimedia Broadcast Multicast Service) data. The mobile station can improve the reception quality of MBMS data by synthesizing wireless signals transmitted from a plurality of base stations.

In the LTE or LTE-A wireless signal, in order to suppress the inter-symbol interference caused by the delayed wave, a guard interval is inserted between the valid symbols as the data signal (called Cyclic Prefix: LTE or LTE-A). prefix)). The longer the guard interval, the more the delay wave with a large delay time can be absorbed. The MBSFN transmission uses a longer guard interval than the individual data sent to a particular mobile station, so that the mobile station can synthesize wireless signals from more base stations (so that it can also capture wireless signals from more distant base stations). .

Furthermore, a wireless communication system has been proposed. When there are a plurality of types of wireless terminal devices having different frequency bands that can be transmitted and received, the wireless terminal device notifies the base station of the frequency bandwidth that can be transmitted and received by the own device, and the base station selects the used frequency band according to the notification. The sub-band (refer to, for example, paragraph [0047] of Patent Document 1). In addition, a base station that has been proposed by the MBSFN is to provide a short CP unicast data and an MBMS data to which a long CP is given, and insert a guard interval to transmit the frequency multiplex (refer to, for example, Patent Document 2) Paragraph [0040]).

Further, a transmission apparatus has been proposed in which the unicast channel having different guard interval lengths and the MBMS channel are time-multiplexed and transmitted in the same frequency band (see, for example, Patent Document 3). In addition, when a guard interval length is variable, a wireless parameter group is set such that the ratio of the guard interval portion in one symbol is constant, and the data transmission efficiency is maintained constant (refer to, for example, the paragraph of Patent Document 4) [0012].

Advanced technical literature Patent literature

Patent Document 1: Japanese Laid-Open Patent Publication No. 2010-41581

Patent Document 2: Japanese Laid-Open Patent Publication No. 2009-267988

Patent Document 3: Japanese Laid-Open Patent Publication No. 2010-81652

Patent Document 4: Japanese Laid-Open Patent Publication No. 2010-98773

However, in a wireless communication system that performs communication using a plurality of frequency bands, it is possible to transmit the data of the first guard interval length in the first frequency band and the data of the second guard interval length in the second frequency band. At this time, the data of the first and second guard intervals may also be transmitted at the same timing.

On the other hand, for the wireless communication device that receives the data, the data of the different guard interval lengths is received in parallel, and the reception processing such as the effective symbol or the FFT (Fast Fourier Transform) is received from the received signal. The burden is huge. Therefore, it is also conceivable that there is a limit in the ability to process guard intervals of different lengths in parallel depending on the wireless communication device. However, in this case, it may happen that the wireless communication device that cannot handle the guard intervals of different lengths in parallel transmits the data of the first and second guard intervals at the same timing, and thus the wireless communication device fails to receive at least one of the data. , wasting the problem of sending data.

The present invention has been made in view of such problems, and an object thereof is to provide a wireless communication device, a wireless communication system, and a wireless communication method capable of efficiently performing wireless communication using a plurality of frequency bands.

In order to solve the above problems, a wireless communication system that uses a plurality of frequency bands for communication is provided. The wireless communication system includes a first wireless communication device including a notification unit, and a second wireless communication device including a transmission unit and a control unit. The notification unit notifies the performance information regarding the ability of the own device of the first and second lengths of the protection interval to be processed in parallel. The transmitting unit transmits the first data of the guard interval of the first length in the first frequency band of the plurality of frequency bands, and transmits the second data of the guard interval of the second length in the second frequency band of the plurality of frequency bands. The control unit schedules the transmission of at least one of the first and second materials based on the notified performance information.

Further, a wireless communication method is provided, which is a wireless communication method of a wireless communication system that communicates with a first wireless communication device and a second wireless communication device using a plurality of frequency bands. In the wireless communication method, the first wireless communication device notifies the second wireless communication device of performance information regarding the capability of processing the own device of the first and second lengths of the protection interval in parallel. The second wireless communication device schedules transmission of at least one of the first data of the protection section of the first length and the second data of the protection section of the second length based on the notified performance information. The second wireless communication device transmits the first data in the first frequency band of the plurality of frequency bands in parallel or at different timings in response to the scheduling result, and transmits the second data in the second frequency band among the plurality of frequency bands.

According to the wireless communication device, the wireless communication system, and the wireless communication method, wireless communication using a plurality of frequency bands can be efficiently performed.

The above and other objects, features, and advantages of the present invention will be apparent from the description accompanying claims

Simple illustration

Fig. 1 is a view showing a wireless communication system according to the first embodiment.

Fig. 2 is a view showing a mobile communication system according to a second embodiment.

Fig. 3 is a view showing a setting example of a component carrier.

Fig. 4 is a view showing a first example of carrier aggregation.

Fig. 5 is a view showing a second example of carrier aggregation.

Fig. 6 is a view showing a setting example of the MBSFN area.

Figure 7 is a diagram showing an example of transmission of individual data and MBMS data.

Fig. 8 is a view showing a configuration example of a radio frame.

Fig. 9 is a view showing a structural example of a symbol.

Figure 10 is a diagram showing the synthesis method of the MBMS data signal.

Figure 11 is a diagram showing a setting example of a general subframe and an MBSFN subframe.

Fig. 12 is a table showing a first category example of the mobile station.

Figure 13 is a table showing a second category of the mobile station.

Fig. 14 is a block diagram showing a base station of the second embodiment.

Figure 15 is a block diagram showing the device control unit of the base station.

Figure 16 is a block diagram showing a mobile station according to a second embodiment.

Figure 17 is a block diagram showing the terminal control unit of the mobile station.

Figure 18 is a block diagram showing a first example of the receiving circuit of the mobile station.

Figure 19 is a block diagram showing a second example of the receiving circuit of the mobile station.

Figure 20 is a block diagram showing a third example of the receiving circuit of the mobile station.

Figure 21 is a block diagram showing the MCE of the second embodiment.

Figure 22 is a flow chart showing the transmission processing of the base station.

Figure 23 is a flow chart showing the receiving process of the mobile station.

Fig. 24 is a first sequence diagram showing an example of data transmission control.

Fig. 25 is a second sequence diagram showing an example of data transmission control.

Fig. 26 is a third sequence diagram showing an example of data transmission control.

Fig. 27 is a fourth sequence diagram showing an example of data transmission control.

Fig. 28 is a block diagram showing a base station of the third embodiment.

Figure 29 is a block diagram showing the MCE of the third embodiment.

Fig. 30 is a fifth sequence diagram showing an example of data transmission control.

Form for implementing the invention

The present embodiment will be described below with reference to the drawings.

[First Embodiment]

Fig. 1 is a view showing a wireless communication system according to the first embodiment. The wireless communication system according to the first embodiment includes wireless communication devices 10, 20, and 20a. The wireless communication device 10 and the wireless communication devices 20 and 20a perform wireless communication using a plurality of frequency bands including the frequency bands #1 and #2. For example, it is conceivable that the wireless communication device 10 is a base station and the wireless communication devices 20 and 20a are mobile stations.

The wireless communication device 10 includes a transmitting unit 11 and a control unit 12. The transmitting unit 11 transmits the material #1 in the frequency band #1 and the data #2 in the frequency band #2. The data #1 is data transmitted by the GI (Guard Interval) of the first length, and is, for example, data (for example, MBMS data) receivable by a plurality of wireless communication devices including the wireless communication devices 20 and 20a. The data #2 is data transmitted using the GI of the second length, which is, for example, individual data to the wireless communication device 20 (or the wireless communication device 20a). The control unit schedules the transmission of at least one of the materials #1 and #2 of the transmitting unit 11. For example, the transmission timing of the data #2 for the individual data of the wireless communication device 20 (or the wireless communication device 20a) is controlled.

The wireless communication device 20 includes a receiving unit 21 and a notification unit 22. The receiving unit 21 receives the data #1 transmitted in the band #1 and the data #2 transmitted in the band #2. The receiving unit 21 may or may not have the ability to process GIs of different lengths in parallel. For example, when data #1 and #2 are transmitted at the same timing, both of them can be received in parallel or cannot be received. The notification unit 22 notifies the wireless communication device 10 of the performance information regarding the ability of the receiving unit 21 to process the GIs of different lengths in parallel. Similarly to the wireless communication device 20, the wireless communication device 20a has a receiving unit and a notification unit.

Here, the control unit 12 schedules the transmission of at least one of the materials #1 and #2 using the performance information notified from the wireless communication devices 20 and 20a. For example, when the wireless communication device 20 can process GIs of different lengths in parallel, the data #2 and the data #1 scheduled for the individual data of the wireless communication device 20 can be transmitted at the same timing. In addition, when the wireless communication device 20a cannot process the GIs of different lengths in parallel, the data #2 and the data #1 scheduled to be scheduled as the individual data of the wireless communication device 20 are transmitted at different timings.

Furthermore, the plurality of wireless communication devices including the wireless communication devices 20, 20a may be classified into a plurality of categories in accordance with performance items including one or more of the capabilities of processing GIs of different lengths in parallel. In this case, the notification unit 22 notifies the wireless communication device 10 of the material indicating the type of the wireless communication device 20 as the performance information. Further, the performance information may be notified from the wireless communication devices 20 and 20a to the wireless communication device 10 when the wireless communication devices 20 and 20a are connected to the wireless communication device 10.

In the wireless communication system according to the first embodiment, the wireless communication devices 20 and 20a notify the wireless communication device 10 of the performance information of processing the GIs of the first and second lengths in parallel. The wireless communication device 10 schedules the data #1 using the first length GI and the data #2 using the second length GI based on the performance information notified from the wireless communication devices 20 and 20a. Then, in response to the scheduling result, data #1 is transmitted in band #1 at the same or different timing, and data #2 is transmitted in band #2.

Thereby, wireless communication using a plurality of frequency bands including the frequency bands #1 and #2 can be efficiently performed. For example, when the wireless communication device 20 can process GIs of different lengths in parallel, by scheduling the data #2 of the individual data of the wireless communication device 20 due to the loose transmission timing limitation, the frequency bands #1 and #2 can be effectively utilized. Wireless resources. Further, when the wireless communication device 20a cannot process the GIs of different lengths in parallel, it is possible to suppress the waste of data transmission by not transmitting the data #2 of the individual data of the wireless communication device 20a at the same timing as the data #1.

Furthermore, the wireless communication system of the first embodiment can also be implemented as an LTE-A system. In this case, the bands #1 and #2 are bands called a component carrier (CC: Component Carrier), or a band called a subcarrier block. Moreover, the guard interval may also be referred to as a CP. In the second and third embodiments described below, an example of a mobile communication system in which LTE-A is assumed will be described.

[Second Embodiment]

Fig. 2 is a view showing a mobile communication system according to a second embodiment. The mobile communication system according to the second embodiment includes a plurality of base stations including base stations 100 and 100a, mobile stations 200 and 200a, MCE (Multi-cell/multicast Coordination Entity) 300, and MME ( Mobility Management Entity 410; MBMS Gateway 420; and SAE (System Architecture Evolution) Gateway 430.

The base stations 100 and 100a are wireless communication devices that can communicate wirelessly with the mobile stations 200 and 200a. The wireless communication system uses a plurality of component carriers (CC). The base stations 100 and 100a are connected to the MCE 300, the MBMS gateway 420, and the SAE gateway 430 via a wired network. The base stations 100 and 100a are connected between the mobile stations 200 and 200a and the SAE gateway 430, and transmit individual data of the mobile stations 200 and 200a. Further, the base stations 100 and 100a perform MBSFN transmission under the control of the MCE 300 (at the same timing, the same frequency is used to transmit the MBMS data of the same content by the same modulation method). The MBMS data is taken from the MBMS gateway 420.

The mobile stations 200 and 200a are wireless terminal devices capable of wirelessly communicating with the base stations 100 and 100a, and are, for example, mobile phones or portable information terminal devices. The mobile stations 200 and 200a receive individual data from the base station 100 or the base station 100a in the following chain (DL: Downlink). Further, the individual data is transmitted to the base station 100 or the base station 100a by the above chain (UL: Uplink). In the second embodiment, it is considered that the mobile stations 200 and 200a are connected to the base station 100 to transmit and receive individual data. Further, the mobile stations 200 and 200a receive the MBMS data transmitted by the MBSFN. The mobile stations 200 and 200a receive signals including MBMS data transmitted by a plurality of base stations at the same timing, synthesize the received signals, and perform demodulation and decoding, and the plurality of base stations include the base stations 100 and 100a.

The MCE300 is a communication device that controls the transmission of the MBSFN. The MCE 300-based base stations 100 and 100a receive the MBSFN request transmitted by the mobile stations 200 and 200a, and schedule the MBSFN transmission. Then, the MBSFN control information is transmitted to the base stations 100, 100a, and the MBMS gateway 420 is instructed to transmit the MBMS data.

The MME 410 is a communication device that performs mobile management of the mobile stations 200 and 200a. The MME 410 communicates with the base stations 100, 100a to manage the cells within the coverage of the mobile stations 200, 200a. The MBMS gateway 420 is a communication device that manages the MBMS data transmitted by the MBSFN. The MBMS gateway 420 is under the control of the MCE 300 and transmits MBMS data to the base stations 100, 100a. The SAE gateway 430 is a communication device that processes individual data of the mobile stations 200, 200a. The SAE gateway 430 transmits the individual data transmitted to the mobile stations 200 and 200a to the base stations 100 and 100a, and receives the data transmitted by the mobile stations 200 and 200a from the base stations 100 and 100a.

Furthermore, in the second embodiment, the MBSFN is controlled by the MCE 300 of the independent device. However, the function of the MCE300 can also be installed on the base stations 100 and 100a. In this case, a plurality of base stations including the base stations 100 and 100a communicate to perform MBSFN control. Moreover, the function of the MCE 300 can be installed in other communication devices in the wired network such as the MME 410.

Fig. 3 is a view showing a setting example of a component carrier. The base stations 100 and 100a can use up to five CCs (CC#1 to #5) for wireless communication. When FDD (Frequency Division Duplex) is used for bidirectional communication, the frequency bands of CC #1 to #5 are secured for DL and UL, respectively. In DL, for example, the frequency bandwidth of each CC is set to 20 MHz, and the entire frequency bandwidth is set to 100 MHz.

The base stations 100 and 100a perform allocation control of radio resources for CC #1 to #5, respectively. The base stations 100 and 100a collect a plurality of CCs and use wireless communication with the mobile stations 200 and 200a (using a plurality of CCs at the same time), thereby realizing a frequency bandwidth using a bandwidth wider than one CC (for example, 20 MHz) ( For example, 40MHz, 60MHz, 80MHz, 100MHz, etc. data communication.

Furthermore, in the example of FIG. 3, two-way communication is realized by FDD, but it can also be realized by time division duplex (TDD: Time Division Deplex). In this case, five CCs are set without distinguishing between DL and UL on the frequency axis. Further, in the above description, the frequency bandwidth of each CC of the DL is set to 20 MHz, but may be set to another frequency bandwidth (for example, 5 MHz, 10 MHz, 15 MHz, or the like). Also, all CCs may be set to the same frequency bandwidth.

Moreover, in the example of FIG. 3, the UL radio resource is set to the low frequency side, and the DL radio resource is set to the high frequency side. Since the transmission loss of the signal is small when the frequency is low, the transmission power of the mobile stations 200 and 200a can be depressed by setting the UL radio resource on the low frequency side. However, it is also possible to configure UL radio resources and DL radio resources.

Here, CC#1 to #5 are all provided in any one of the 800 MHz band, the 2.5 MHz band, and the 3.5 MHz band, or may be dispersed in a plurality of bands. It is sometimes said that a plurality of CCs are aggregated as carrier aggregation (Carrier Aggregation). In carrier aggregation, it is sometimes said that CCs belonging to different frequency bands are aggregated (Spectrum Aggregation).

Fig. 4 is a view showing a first example of carrier aggregation. In the example of Fig. 4, in the 3.5 GHz band, a continuous band of 100 MHz wide is prepared as a frequency band that can be used for wireless communication. Then, the 100 MHz wide frequency band is divided into five, which are defined as CC#1 to #5 of 20 MHz width.

The mobile stations 200 and 200a use, for example, CC#1 and #2 as frequency bands of 40 MHz (logically one frequency band) by carrier aggregation. In this case, the mobile stations 200 and 200a actually use one of the bands of the continuous 100 MHz wide which belongs to 3.5 GHz. Further, in Fig. 4, an example of a frequency band belonging to 3.5 GHz is used, and in the case of a frequency band of another frequency band such as 800 MHz or 2.5 MHz, carrier aggregation is also possible.

Fig. 5 is a view showing a second example of carrier aggregation. In the example of Fig. 5, in the 800 MHz band, a frequency band of 20 MHz wide is prepared as a frequency band that can be used for wireless communication. Further, in the 3.5 GHz band, a continuous band of 80 MHz wide is prepared as a frequency band that can be used for wireless communication. Then, the 20 MHz band of the 800 MHz band is defined as CC #1, and the 80 MHz band of the 3.5 GHz band is divided into four, which are defined as CC #2 to #5 of 20 MHz width, respectively.

The mobile stations 200 and 200a use, for example, CC#1 and #2 as frequency bands of 40 MHz (logically one frequency band) by spectrum aggregation (carrier aggregation). In this case, the mobile stations 200 and 200a actually use one of a frequency band of 20 MHz which is a band of 800 MHz and a band of 80 MHz which is a continuous band of 3.5 GHz. Further, in Fig. 5, an example belonging to a combination of the 8000 MHz band and the 3.5 GHz band is cited, and in the case of a combination of other bands, spectrum aggregation is also possible.

Fig. 6 is a view showing a setting example of the MBSFN area. In the MBSFN area, the synchronization of MBMS data transmission is obtained by the control of the MCE300. In the example of Fig. 6, 19 honeycombs (Hives #1 to #19) are contained in the MBSFN region.

Here, the mobile station 200 is within the coverage of the hive #1, and all the cells (hives #1 to #19) in the MBSFN area are transmitted with the MBMS data received by the mobile station 200. In this case, the mobile station 200 can demodulate and decode the wireless signals of the 19 cells and retrieve the MBMS data. In addition, one part of the cells in the MBSFN area may not send the MBMS data received by the mobile station 200.

Figure 7 is a diagram showing an example of transmission of individual data and MBMS data. The mobile station 200 can also receive the MBMS data transmitted by the MBSFN by a certain CC, and receive the individual information of the mobile station 200 by other CCs. The example of Fig. 7 shows the case where the base station 100 and the mobile station 200 are in wireless communication, and CC#1 and #2 are used.

For example, the base station 100 transmits a Physical Channel (Physical Multicast Channel) of the physical channel by CC#1. In the PMCH, the MCCH (Multicast Control Channel) of the logical channel for transmitting the MBSFN control information and the MTCH (Multicast Traffic Channel) of the logical data for transmitting the MBMS data are mapped. Further, the base station 100 transmits a PDCCH (Physical Downlink Control Channel) for transmitting a physical channel of the individual control information and a PDSCH (Physical Downlink Shared) for transmitting the physical channel of the individual data by CC#2. Channel: entity chain sharing channel). The base station 100a transmits the PMCH in CC#1.

At this time, the mobile station 200 receives and combines the wireless signals transmitted by the base stations 100 and 100a with CC#1, receives the wireless signals transmitted by the base station 100, and extracts the individual data to itself. Furthermore, the base stations 100 and 100a can also transmit MBMS data and individual data at the same timing or at different timings. The mobile stations 200, 200a may or may not have the ability to receive MBMS data and individual data transmitted at the same timing in parallel. In the second embodiment, it is assumed that the mobile station 200 can receive in parallel, and the mobile station 200a cannot receive in parallel.

Fig. 8 is a view showing a configuration example of a radio frame. In each of CC #1 to #5, the radio frame shown in Fig. 8 is transmitted between the base stations 100 and 100a and the mobile stations 200 and 200a. However, the structure shown in FIG. 8 is an example, and the structure of the radio frame is not limited to this example.

For example, a radio frame with a time width of 10 ms includes 10 sub-frames (sub-frames #0 to #9) having a time width of 1 ms. In the sub-frame, there are 2 slots with a time width of 0.5ms, and 20 slots (10 slots to 019) in the 10ms radio frame.

The radio resources in the radio frame are managed by subdivision in the time direction and frequency direction. For example, as a multiplex access method, OFDMA (Orthogonal Frequency Division Multiple Access) is used in DL, and SC-FDMA (Single-Carrier Frequency Division Multiple Access) is used in UL. Access) or N×DFT-s-OFDM (N×Discrete Fourier Transform Spread Orthogonal Frequency Division Multiple Access: N×Discontinuous Fourier Transform Spread Spectrum Orthogonal Frequency Division Multiple Access). Regarding the time direction, the slot contains 7 or 6 symbols. Regarding the frequency direction, the CC includes a plurality of subcarriers. The wireless resources of the time×frequency area are assigned to various channels.

In the DL radio frame, in the slot #0, #10, the synchronous channel (SCH: Synchronization Channel) for transmitting the synchronization signal is transmitted. In the message slot #1, the PBCH (Physical Broadcast Channel) for transmitting the entity notification channel of the notification information is transmitted. In the message slot #8, #18, the PCH (Paging Channel) transmission for calling the transmission channel of the mobile station 200, 200a. The PCH is transmitted by mapping to the PDSCH of the physical channel.

Furthermore, the subframe (MBSFN subframe) for transmitting the MBMS data is selected from the subframes #1 to #3 and #6 to #8 of any one of the SCH, PBCH, and PCH. As will be described later, the CP length of the MBSFN subframe is different from the subframes (general subframes) other than the subframes, and therefore is not used for the transmission of individual data. Therefore, in one sub-frame, MBMS data and individual data are not subject to multiplex.

Fig. 9 is a view showing a structural example of a symbol. As shown in Fig. 9, the symbol contains the valid symbol as the data part and the CP as the guard interval. The CP copies the signal at the end of the valid symbol and appends it before the valid symbol.

The CP includes two types of CPs that differ in length from the normal CP (Normal CP) and the extended CP (Extended CP). For example, the general CP has a time width of 4.69 μsec and the extended CP has a time width of 16.67 μsec. The time width of the valid symbol is the same as when using the general CP and when using the extended CP. The slot using the general CP contains 7 symbols, and the slot using the extended CP contains 6 symbols.

The general CP is used in principle in the general subframe. Therefore, the slot in the general subframe contains 7 symbols. In addition, the extended CP is utilized in the MBSFN subframe. Therefore, the slot in the MBSFN subframe contains 6 symbols. The mobile stations 200 and 200a can synthesize a delayed wave having a delay time of less than CP and combine it with a direct wave or other delayed wave to demodulate it. The mobile stations 200 and 200a can synthesize ‧ demodulation delay time is greater than the wireless signal when the general CP is used (for example, a wireless signal transmitted from a remote base station) by using the extended CP, and the MBMS data can be retrieved.

Figure 10 is a diagram showing the synthesis method of the MBMS data signal. In the example of FIG. 10, the mobile stations 200 and 200a receive signals in which the wireless signals transmitted from the five base stations are superimposed as signals in which the direct waves overlap with the four delayed waves. Among the four delayed waves, the delay time of three delayed waves is less than CP length, and the delay time of one delayed wave exceeds CP length. At this time, the mobile stations 200 and 200a synthesize and demodulate the direct wave and the three delayed waves.

Figure 11 is a diagram showing a setting example of a general subframe and an MBSFN subframe. In the example of FIG. 11, the sub-frame #1 of CC#1 is set to the MBSFN sub-frame, and the sub-frames #0 to #2 of the sub-frames #0, #2 and CC#2 of CC#1 are set as general sub-frames. Frame. Furthermore, in each sub-frame, it is called the pilot signal of the reference signal (RS: Reference Singnal). The RS system is used to measure the reception quality of the mobile stations 200 and 200a. The RS included in the general subframe and the RS contained in the MBSFN subframe are different signal series.

As mentioned above, the general subframe contains 7×2 symbols, and the MBSFN subframe contains 6×2 symbols. Therefore, as shown in Fig. 11, at the time of the sub-frame #1, CC#1 and CC#2 deviate from the start position of each symbol. At this time, if the mobile stations 200 and 200a receive the sub-frame #1 of CC #1 and #2 in parallel, the reception of the effective symbol or the reception processing of the FFT or the like is greatly burdened. As described above, in the second embodiment, it is considered that the mobile station 200 can receive in parallel, and on the other hand, the mobile station 200a cannot receive in parallel. The base stations 100 and 100a consider the communication capabilities of the mobile stations 200 and 200a, and schedule the individual data for the mobile stations 200 and 200a.

In addition, in FIG. 11, for the ease of description, one source block (RB: Resource Block) is described for each CC in the frequency direction. Each CC may also include a plurality of RBs in the frequency direction. For example, a 1.4MHz wide CC may include six, a 3MHz wide CC may include 15, a 5MHz wide CC may include 25, a 10MHz wide CC may include 50, and a 15MHz wide CC may include 75, 20MHz wide. The CC can contain 100 RBs.

Fig. 12 is a table showing a first category example of the mobile station. A plurality of mobile stations including mobile stations 200 and 200a are classified according to communication capabilities. For example, when the mobile stations 200 and 200a are connected to the base station 100, the base station 100 is notified of its own type. For example, the category table 101 shown in FIG. 12 is stored in the base station 100.

The category table 101 includes items of category ID, DL bandwidth, UL bandwidth, and whether or not the CP is acceptable. The category ID is used to identify the identification information of the category. The DL bandwidth is the maximum bandwidth that can be used for DL communications. The UL bandwidth is the maximum bandwidth available for UL communications. Whether the different CP reception can indicate whether the sub-frame of the general CP and the sub-frame of the extended CP can be received at the same time.

For example, according to the definition of the category table 101, the mobile station of category=10 can use the frequency band below 60 MHz for DL communication, and the frequency band of 15 MHz or less can be used for UL communication, and the general CP and the extended CP cannot be processed in parallel. In addition, the mobile station of category=11 can use the same frequency bandwidth as the mobile station of category=10, and the general CP and the extended CP can be processed in parallel. Further, in Fig. 12, the DL frequency bandwidth and the UL frequency bandwidth are expressed in Hertz, but the CC number can be expressed by carrier aggregation.

Figure 13 is a table showing a second category of the mobile station. The plurality of mobile stations including the mobile stations 200, 200a may also be substituted for the category table 101, and the categories are distinguished according to the category table 102 shown in FIG. In this case, for example, the category table 102 is stored in the base station 100. The category table 102 includes items of category ID, DL frequency bandwidth, and availability of different CPs. The UL frequency bandwidth is defined to be proportional to the DL frequency bandwidth, or different from the class notification, and the base station 100 can be notified from the mobile stations 200, 200a. This simplifies the classification of the mobile station.

Fig. 14 is a block diagram showing a base station of the second embodiment. The base station 100 includes an antenna 111, a radio reception unit 112, a demodulation and decoding unit 113, a class notification extraction unit 114, a quality information acquisition unit 115, an MBSFN request extraction unit 116, a scheduler 121, and a category information storage unit 122. The device control unit 130, the individual control information generating unit 141, the reception control information generating unit 142, the MBSFN control information generating unit 143, the RS generating unit 144, the mapping unit 145, the encoding and transforming unit 146, and the wireless transmitting unit 147. Other base stations including the base station 100a can also be implemented by the same configuration as the base station 100.

The antenna 111 receives the wireless signals transmitted by the mobile stations 200 and 200a and outputs them to the wireless receiving unit 112. Further, the transmission signal obtained from the wireless transmission unit 147 is output as a wireless signal. Further, the antenna for transmitting and receiving is not provided, and the transmitting antenna and the receiving antenna may be separately provided in the base station 100. Further, the base station 100 can also perform diversity transmission using a plurality of antennas.

The wireless receiving unit 112 performs wireless signal processing on the received signal obtained from the antenna 111, and performs conversion (down-conversion) of the high frequency wireless signal to the low frequency fundamental frequency signal. The wireless receiving unit 112 includes circuits such as a low noise amplifier (LNA), a quadrature demodulator, and an ADC (Analog to Digital Converter) for wireless signal processing.

The demodulation and decoding unit 113 demodulates and corrects the baseband signal obtained from the radio reception unit 112. The demodulation and decoding are performed in accordance with a specific modulation coding scheme (MCS: Modulation and Coding Scheme) or a method of MCS instructed by the device control unit 130. The user data of the individual data retrieved is transmitted to the SAE gateway 430.

The category notification extraction unit 114 retrieves the category notifications transmitted by the mobile stations 200 and 200a. Category notifications include, for example, category IDs. The category notification is transmitted by the UL physical channel, PUSCH (Physical Uplink Shared Channel). The category notification extraction unit 114 outputs the extracted category notification to the device control unit 130.

The quality information capturing unit 115 extracts the quality information indicating the quality of the reception information of the control information transmitted by the mobile stations 200 and 200a. The quality information is, for example, a CQI (Channel Quality Indicator) indicating the reception quality in discrete values. The quality information is transmitted by the PU's physical channel, PUCCH (Physical Uplink Control Channel). The quality information capturing unit 115 outputs the captured quality information to the scheduler 121.

The MBSFN request acquisition unit 116 is configured to retrieve the MBSFN request transmitted by the mobile stations 200 and 200a indicating that the MBSFN transmission is required. The MBSFN request contains information on the selection of the MBMS service and is transmitted on the PUSCH. The MBSFN requires the capture unit 116 to output the captured MBSFN request to the scheduler 121. Also, the MBSFN request is transmitted to the MCE 300 in response to an instruction from the scheduler 121.

The scheduler 121 performs scheduling of individual data for the mobile stations 200, 200a. In the scheduling, the reception quality of the mobile stations 200 and 200a indicated by the quality information obtained from the quality information acquisition unit 115, the communication capabilities of the mobile stations 200 and 200a notified from the device control unit 130, and the MBSFN received from the MCE 300 are referred to. Controls the timing of sending MBMS data as indicated by the information. The schedule includes the assignment of wireless resources or the choice of MCS. The scheduler 121 notifies the individual control information generating unit 141, the reception control information generating unit 142, and the device control unit 130 of the scheduling result. Further, the scheduler 121 instructs the MBSFN control information generation unit 143 to transmit the PMCH (PCCH) based on the MBSFN control information received from the MCE 300.

The category information storage unit 122 is a memory that stores in advance the category information indicating the correspondence relationship between the category ID and the communication capability of the mobile station. For example, the category information storage unit 122 stores the category table 101 shown in FIG.

The device control unit 130 specifies the communication capabilities of the mobile stations 200 and 200a based on the category notification acquired from the category notification extraction unit 114 and the category information stored in the category information storage unit 122, and notifies the scheduler 121. Further, the device control unit 130 controls the reception processing and transmission processing of the radio reception unit 112, the demodulation decoding unit 113, the code modulation unit 146, and the radio transmission unit 147 based on the scheduling result of the scheduler 121.

The individual control information generating unit 141 generates individual control information transmitted by the PDCCH in response to the scheduling result of the scheduler 121. The individual control information includes information indicating the wireless resources used for the transmission of individual data, or information indicating the MCS applicable to the individual data. The individual control information generating unit 141 outputs the generated individual control information to the mapping unit 145.

The reception control information generation unit 142 generates reception control information transmitted by the PDCCH in response to an instruction from the scheduler 121. The receiving control information is when the mobile station 200, 200a wants to receive both the individual data and the MBMS data, indicating whether the information of both parties can be received. For example, the reception control information may be considered to indicate that both the individual data and the MBMS data can be received, and that the MBMS data cannot be received. The reception control information generation unit 142 outputs the generated reception control information to the mapping unit 145.

The MBSFN control information generating unit 143 generates MBSFN control information transmitted by the PMCH (MCCH) in response to an instruction from the scheduler 121. The MBSFN control information includes information indicating a list of MBMS services (types of MBMS data) available to the mobile stations 200 and 200a. Also, information indicating a wireless resource for MBMS data transmission or information indicating an MCS applicable to MBMS data is included. The MBSFN control information generating unit 143 outputs the generated MBSFN control information to the mapping unit 145.

The RS generation unit 144 generates an RS of the known pilot signal, and outputs the generated RS to the mapping unit 145.

The mapping unit 145 maps the MBMS data received from the MBMS gateway 420 and the individual data received from the SAE gateway 430 to the DL radio frame. Further, the control information acquired from the individual control information generating unit 141, the reception control information generating unit 142, and the MBSFN control information generating unit 143, and the RS acquired from the RS generating unit 144 are mapped to the DL radio frame. The mapping unit 145 sequentially outputs the mapped transmission signals to the code modulation unit 146.

The code modulation unit 146 performs error correction coding and modulation from the transmission signal acquired from the mapping unit 145, and outputs the result to the wireless transmission unit 147. The MCS indicated by the specific MCS or the slave control unit 130 is used for encoding and modulation.

The wireless transmitting unit 147 performs wireless signal processing on the transmission signal obtained from the code modulation unit 146, and converts (upgrades) the low frequency fundamental signal to the high frequency wireless signal. The wireless transmitting unit 147 includes circuits such as a DAC (Digital to Analog Converter), a quadrature demodulator, and a power amplifier for wireless signal processing.

Further, the collection of the individual control information generating unit 141, the reception control information generating unit 142, the MBSFN control information generating unit 143, the RS generating unit 144, the mapping unit 145, the encoding and transforming unit 146, and the wireless transmitting unit 147 can be regarded as the first implementation. An example of the transmission unit 11 of the form. The set of the scheduler 121 and the device control unit 130 can be regarded as an example of the control unit 12 of the first embodiment.

Figure 15 is a block diagram showing the device control unit of the base station. The device control unit 130 includes an exclusive CP reception control unit 131, a frequency control unit 132, a reception frequency bandwidth setting unit 133, a reception frequency setting unit 134, a transmission frequency setting unit 135, and a transmission frequency bandwidth setting unit 136. In addition, in the 15th figure, the description about the control system of MCS is abbreviate|omitted.

The different CP reception control unit 131 determines whether the mobile stations 200 and 200a can process CPs of different lengths in parallel based on the category notification acquired from the category notification extraction unit 114 and the category information stored in the category information storage unit 122. The program 121 notifies. Further, the exclusive CP reception control unit 131 notifies the general frequency CP to the reception frequency bandwidth setting unit 133, the reception frequency setting unit 134, the transmission frequency setting unit 135, and the transmission frequency bandwidth setting unit 136 based on the scheduling result of the scheduler 121. And the setting of the simultaneous transmission of the extended CP.

The frequency control unit 132 determines, based on the category notification obtained from the category notification extraction unit 114 and the category information stored in the category information storage unit 122, that the mobile stations 200 and 200a can use the frequency bandwidth for wireless communication, and to the scheduler. 121 notice. Further, the frequency control unit 132 notifies the reception frequency bandwidth setting unit 133, the reception frequency setting unit 134, the transmission frequency setting unit 135, and the transmission frequency bandwidth setting unit 136 based on the scheduling result of the scheduler 121, and notifies the setting of the use frequency. .

The reception frequency bandwidth setting unit 133 sets the frequency band in which the wireless signals are received from the mobile stations 200 and 200a based on the notifications from the different CP reception control unit 131 and the frequency control unit 132 in the UL frequency bands of CC #1 to #5. width. The reception frequency setting unit 134 sets the CC that receives the wireless signal from the mobile stations 200 and 200a among the CCs #1 to #5 based on the notification from the different CP reception control unit 131 and the frequency control unit 132.

The transmission frequency setting unit 135 sets a CC for transmitting the wireless signal to the mobile stations 200 and 200a among the CCs #1 to #5 based on the notification from the different CP reception control unit 131 and the frequency control unit 132. The transmission frequency bandwidth setting unit 136 sets a frequency band for transmitting the wireless signal to the mobile stations 200 and 200a in the frequency bands of the DLs of CC#1 to #5 based on the notifications from the different CP reception control unit 131 and the frequency control unit 132. width.

Figure 16 is a block diagram showing a mobile station according to a second embodiment. The mobile station 200 includes an antenna 211, a radio reception unit 220, a demodulation and decoding unit 230, an individual control information acquisition unit 241, a reception control information acquisition unit 242, an MBSFN control information acquisition unit 243, and an RS acquisition unit 244. The MBSFN control unit 251, the quality measurement unit 252, the performance information storage unit 253, the terminal control unit 260, the class notification generation unit 271, the MBSFN request generation unit 272, the quality information generation unit 273, the code modulation unit 274, and the wireless transmission unit 275. The mobile station 200a can also be implemented by the same block configuration as the mobile station 200.

The antenna 211 receives a wireless signal transmitted from a base station including one or more base stations 100, and outputs the wireless signal to the wireless receiving unit 220. Further, the antenna 211 wirelessly outputs the transmission signal acquired from the wireless transmission unit 275. Further, the antenna for transmitting and receiving is not provided, and the transmitting antenna and the receiving antenna may be provided separately for the mobile station 200. Further, the mobile station 200 can also perform diversity reception using a plurality of antennas.

The radio receiving unit 220 performs radio signal processing on the received signal obtained from the antenna 211, and performs down-conversion from the radio signal to the baseband signal. The radio reception unit 220 includes circuits such as an LNA, a quadrature demodulator, and an ADC for wireless signal processing.

The demodulation and decoding unit 230 demodulates and corrects the baseband signal obtained from the radio reception unit 220. The demodulation and decoding are performed in accordance with a specific MCS or a method of MCS instructed by the terminal control unit 260. The individual data or MBMS data retrieved is delivered to a data processing unit (not shown) of the upper layer such as the processor.

Here, when the MBMS data transmitted by the MBSFN is received, the signal of the same content transmitted from the plurality of base stations is superimposed on the received signal. At the mobile station 200, the lead wave and the delayed wave appear to overlap. The demodulation and decoding unit 230 also extracts the signal of the delayed wave whose delay time is less than the CP length, and synthesizes it into a direct wave signal for demodulation and decoding.

The individual control information capturing unit 241 extracts individual control information transmitted by the PDCCH. As mentioned above, the individual control information includes information indicating the wireless resources used for the transmission of the individual data, or information indicating the MCS applicable to the individual data. The individual control information capturing unit 241 outputs the captured individual control information to the terminal control unit 260.

The reception control information capturing unit 242 extracts the reception control information transmitted by the PDCCH. As described above, the reception control information indicates whether the mobile station 200 can receive both the individual data and the MBMS data. The reception control information acquisition unit 242 outputs the captured reception control information to the terminal control unit 260 and the MBSFN control unit 251.

The MBSFN control information capturing unit 243 extracts MBSFN control information transmitted by the PMCH (MCCH). As described above, the MBSFN control information includes information indicating a list of available MBMS services, information indicating that the MBMS data is transmitted, and information indicating the MCS applicable to the MBMS data. The MBSFN control information acquisition unit 243 outputs the extracted MBSFN control information to the MBSFN control unit 251.

The RS acquisition unit 244 extracts the RS included in the DL radio frame, and outputs the extracted RS to the quality measurement unit 252.

The MBSFN control unit 251 instructs the MBSFN request generation unit 272 to transmit an MBSFN request when the user operation is to be started and the MBMS data is to be received. Further, the MBSFN control unit 251 notifies the terminal control unit 260 of the information for receiving the MBMS data, such as the timing of transmitting the MBSFN data, based on the MBSFN control information acquired from the MBSFN control information capturing unit 243. The MBSFN control unit 251 controls to not receive the MBMS data when receiving the reception control information indicating that the MBMS data cannot be received from the reception control information acquisition unit 242.

The quality measuring unit 252 measures the reception quality (or radio channel quality) such as CIR by using the RS acquired from the RS acquisition unit 244. The quality measuring unit 252 outputs the measurement result to the quality information generating unit 273 and returns it to the RS capturing unit 244.

The performance information storage unit 253 is a memory that memorizes performance information of the mobile station 200 in advance. The performance information indicates the ability of the mobile station 200 to enable the UL and DL bands for wireless communication, or whether CPs of different lengths can be processed in parallel. The performance information storage unit 253 stores the category ID as performance information.

The terminal control unit 260 controls the reception of the individual data to the mobile station 200 and the transmission of the user data to the base station 100 based on the individual control information acquired from the individual control information capturing unit 241. Further, when the mobile station 200 is connected to the base station 100, the terminal control unit 260 instructs the class notification generation unit 271 to notify the base station 100 of the transmission type.

The category notification generation unit 271 reads the performance information from the performance information storage unit 253 in response to an instruction from the terminal control unit 260, and generates a category notification. When the performance information is information other than the category ID, the category of the mobile station 200 is calculated from the communication capability indicating the performance information, and the category ID is specified. The category notification generation unit 271 outputs the generated category notification to the code modulation unit 274. Furthermore, in the above description, the mobile station 200 notifies the base station 100 of the category ID, but may notify the performance information other than the category ID.

The MBSFN request generation unit 272 generates an MBSFN request indicating an MBSFN transmission request in response to an instruction from the MBSFN control unit 251. The MBSFN request includes information indicating the MBMS service selected from the list notified by the base station 100. The MBSFN request generation unit 272 outputs the generated MBSFN request to the code modulation unit 274.

The quality information generating unit 273 generates the reception quality measured by the quality measuring unit 252 or the quality information indicating the quality of the wireless channel. As the quality information, for example, CQI can be utilized. The quality information generation unit 273 outputs the generated quality information to the code modulation unit 274.

The code modulation unit 274 gives an error to the user data transmitted by the PUSCH, the class notification obtained from the class notification generating unit 271, the MBSFN request obtained from the MBSFN request generating unit 272, and the quality information acquired from the quality information generating unit 273. The encoding and modulation are corrected and output to the wireless transmitting unit 275. The coding and modulation system utilizes a specific MCS or an MCS indicated by the terminal control unit 260.

The wireless transmitting unit 275 performs wireless signal processing on the transmission signal obtained from the code modulation unit 274, and up-converts the signal from the baseband signal to the wireless signal. The wireless transmitting unit 275 includes circuits such as a DAC, a quadrature demodulator, and a power amplifier for wireless signal processing.

The wireless receiving unit 220, the demodulation decoding unit 230, the individual control information capturing unit 241, the reception control information capturing unit 242, the MBSFN control information capturing unit 243, and the RS capturing unit 244 can be regarded as the first implementation. An example of the form receiving unit 21. The set of the class notification generation unit 271, the code modulation unit 274, and the wireless transmission unit 275 can be regarded as an example of the notification unit 22.

Figure 17 is a block diagram showing the terminal control unit of the mobile station. The terminal control unit 260 includes an exclusive CP reception control unit 261, a frequency control unit 262, a reception frequency bandwidth setting unit 263, a reception frequency setting unit 264, a transmission frequency setting unit 265, and a transmission frequency bandwidth setting unit 266. In addition, in FIG. 17, the description about the control system of MCS is abbreviate|omitted.

The different CP reception control unit 261 determines whether or not the general CP and the extended CP are simultaneously received based on the reception control information acquired from the reception control information acquisition unit 242 and the performance information of the mobile station 200 stored in the performance information storage unit 253. The different CP reception control unit 261 notifies the reception frequency bandwidth setting unit 263, the reception frequency setting unit 264, the transmission frequency setting unit 265, and the transmission frequency bandwidth setting unit 266, and notifies the setting of simultaneous reception.

The frequency control unit 262 transmits the individual control information acquired from the individual control information capturing unit 241, the notification from the MBSFN control unit 251, and the performance information of the mobile station 200 stored in the performance information storage unit 253 to the reception frequency bandwidth setting unit 263. The reception frequency setting unit 264, the transmission frequency setting unit 265, and the transmission frequency bandwidth setting unit 266 notify the setting of the use frequency.

The reception frequency bandwidth setting unit 263 sets the width of the frequency band in which the wireless signal is received, in accordance with the notification from the different CP reception control unit 261 and the frequency control unit 262 in the frequency bandwidth of the DL of CC #1 to #5. The reception frequency setting unit 264 sets the CC for receiving the wireless signal among the CC#1 to #5 based on the notification from the different CP reception control unit 261 and the frequency control unit 262.

The transmission frequency setting unit 265 sets a CC for transmitting a wireless signal to the base station 100 among CC#1 to #5 based on the notification from the different CP reception control unit 261 and the frequency control unit 262. The transmission frequency bandwidth setting unit 266 sets the width of the frequency band in which the wireless signal is transmitted to the base station 100 in the UL frequency band of CC #1 to #5 based on the notification from the different CP reception control unit 261 and the frequency control unit 262.

Figure 18 is a block diagram showing a first example of the receiving circuit of the mobile station. The example of Fig. 18 shows a case where the mobile station 200 does not perform spectrum aggregation. As described above, the demodulation decoding unit 230 can process the general CP and the extended CP in parallel.

The radio reception unit 220 processes radio signals of one or more CCs belonging to the same frequency band (for example, an 800 MHz band or a 3.5 GHz band). The wireless receiving unit 220 has a LAN 221, a quadrature demodulator 222, and an ADC 223. The LAN 221 amplifies the received signal obtained by the antenna 211. The quadrature demodulator 222 performs quadrature demodulation of the received signal to extract the in-phase component and the quadrature component. The ADC 223 converts the analog fundamental signal into a digital fundamental signal and outputs it to the demodulation decoding unit 230.

The demodulation and decoding unit 230 includes CP processing units 231 and 231a, FFT units 232 and 232a, demodulation units 233 and 233a, PS (Parallel Serial) conversion units 234 and 234a, and decoding units 235 and 235a. When receiving the general subframe and the MBSFN subframe, the CP processing unit 231, the FFT unit 232, the demodulation unit 233, the PS conversion unit 234, and the decoding unit 235 process the general subframe, the CP processing unit 231a, the FFT unit 232a, and the solution. The adjustment unit 233a, the PS conversion unit 234a, and the decoding unit 235a process the MBSFN subframe.

The CP processing unit 231 deletes the normal CP from the digital base signal acquired from the wireless receiving unit 220 and retrieves the valid symbol. The CP processing unit 231a deletes the extended CP from the digital baseband signal and extracts the effective symbol. The FFT sections 232 and 232a perform FFT on the effective symbols and convert the time axis signals into signals of frequency components. The demodulation sections 233 and 233a digitally demodulate the signal after the FFT for each frequency component. The PS conversion sections 234 and 234a return the parallel signals of the frequency components to the sequence signals (demapping). The decoding units 235 and 235a perform error correction decoding on the demapped signals.

As described above, if the radio receiving unit 220 is a CC belonging to the same frequency band, the CC transmitting the general subframe and the CC transmitting the MBSFN subframe can be processed at one time. Further, the demodulation and decoding unit 230 is provided with two receiving systems for simultaneously processing the general sub-frames and the MBSFN sub-frames having different CP lengths.

Figure 19 is a block diagram showing a second example of the receiving circuit of the mobile station. The example of Fig. 19 shows a case where the mobile station 200 performs spectrum aggregation. In this case, the mobile station 200 has a wireless receiving unit 220a instead of the wireless receiving unit 220.

The radio reception unit 220a includes LNAs 221 and 221a, orthogonal demodulation units 222 and 222a, and ADCs 223 and 223a. The LAN 221, the quadrature demodulator 222, and the ADC 223 process CCs belonging to one frequency band (for example, 3.5 GHz), and the LAN 221a, the quadrature demodulator 222a, and the ADC 223a process CCs belonging to other frequency bands (for example, 800 MHz). As described above, the radio reception unit 220a and the demodulation and decoding unit 230 include two reception systems, and can simultaneously process the general sub-frames and the MBSFN sub-frames transmitted by the two CCs belonging to different frequency bands.

Figure 20 is a block diagram showing a third example of the receiving circuit of the mobile station. The example of Fig. 20 shows a receiving circuit mounted on the mobile station 200a in which the normal CP and the extended CP cannot be processed in parallel. The mobile station 200a has, for example, a radio reception unit 220 and a demodulation decoding unit 230a.

The demodulation and decoding unit 230a includes a CP processing unit 231, an FFT unit 232, a demodulation unit 233, a PS conversion unit 234, and a decoding unit 235. The CP processing unit 231 and the FFT unit 232 set which of the general subframe and the MBSFN subframe are received for each subframe time (1 ms). The CP processing unit 231 deletes the normal CP or the extended CP and retrieves the valid symbol in response to the setting. The FFT unit 232 performs a FFT to obtain a signal of a frequency component in response to the set timing. Thus, the demodulation and decoding unit 230a does not have the capability of simultaneously processing the general subframe and the MBSFN subframe having different CP lengths.

Figure 21 is a block diagram showing the MCE of the second embodiment. The MCE 300 includes an MBSFN request acquisition unit 311, a scheduler 312, and an MBSFN control unit 313.

The MBSFN request acquisition unit 311 receives the MBSFN request transmitted from the mobile stations 200 and 200a from the base stations 100 and 100a. The MBSFN request acquisition unit 311 outputs the received MBSFN request to the MBSFN control unit 313.

The scheduler 312 schedules the MBMS data transmitted in the MBSFN in response to an instruction from the MBSFN control unit 313. The schedule includes the timing of the decision to send the MBMS data (the choice of the slot or subframe to send the MBMS data), or the MCS for the MBMS data. At the time of scheduling, it is judged whether or not the MBMS data of the type indicated by the MBSFN control unit 313 has been transmitted in the MBSFN area. When it has been sent, sometimes new wireless resources for transmitting the MBMS data may not be assigned.

The MBSFN control unit 313 transmits the MBSFN control information of the list of available MBMS services to the base stations 100 and 100a. When the MBSFN request acquisition unit 311 acquires the MBSFN request from the MBSFN request acquisition unit 311, the MBSFN control unit 313 instructs the scheduler 312 to schedule the MBMS data of the requested MBMS service. Then, the MBSFN control information indicating the scheduling result (the transmission timing of the MBMS data or the MCS, etc.) is transmitted to the base stations 100 and 100a and the MBMS gateway 420.

Figure 22 is a flow chart showing the transmission processing of the base station. The processing shown in Fig. 22 will be described below in accordance with the step number.

(Step S11) When the mobile stations 200 and 200a are connected to the base station 100, the radio reception unit 112 receives a category notification (for example, a category ID) from the mobile stations 200 and 200a. The category notification extraction unit 114 receives the category notification. The device control unit 130 specifies the communication capabilities of the mobile stations 200 and 200a based on the category notification.

(Step S12) The MBSFN control information generating unit 143 generates MBSFN service information of a list of MBMS services based on the information received from the MCE 300. The wireless transmitting unit 147 transmits MBSFN service information by PMCH (MCCH).

(Step S13) The radio reception unit 112 receives the MBSFN request on the PUSCH. The MBSFN requires the capture unit 116 to retrieve the MBSFN request.

(Step S14) The scheduler 121 determines whether the mobile station at the transmission destination of the MBSFN request can simultaneously receive the normal CP and the extended CP based on the communication capability specified in step S11. When it is possible to simultaneously receive (the mobile station 200), the processing proceeds to step S15. When it is not possible to receive (the mobile station 200a) at the same time, the process proceeds to step S18.

(Step S15) The MBSFN request extraction unit 116 transmits the MBSFN request extracted in step S13 to the MCE 300.

(Step S16) The reception control information generating unit 142 generates a reception control information indicating both the individual data and the MBMS data that can be simultaneously received to the mobile station 200. The radio transmission unit 147 transmits the generated reception control information to the mobile station 200 using the PDCCH.

(Step S17) The scheduler 121 performs scheduling of individual data for the mobile station 200. At this time, the location of the MBSFN subframe is determined by the MCE300. The scheduler 121 may also use a sub-frame of the same timing as the MBSFN subframe in the CC different from the CC transmitting the MBSFN for transmitting the individual data of the mobile station 200.

(Step S18) The scheduler 121 specifies the radio resources that can be used for the individual data transmitted to the mobile station 200a. In the specificity of the radio resource, the number of CCs that the mobile station 200a can receive simultaneously or the idle state of the radio resources are considered. Further, the scheduler 121 calculates the transmission rate of each subframe of each CC from the reception quality of the mobile station 200a. Then, the scheduler 121 calculates the transfer rate (transferable rate) that can be achieved by the individual data from the available wireless resources and the transmission rate per subframe.

Here, the radio resource that can be used by the mobile station 200a rejects the sub-frames of the same timing as the MBSFN subframe in the CC different from the CC transmitting the MBSFN subframe. For example, when the mobile station 200a uses CC#1 and #2 to transmit the MBSFN subframe in CC#1, the subframe of CC#2 in the same sequence as the MBSFN subframe is removed from the available radio resources.

(Step S19) The scheduler 121 compares the transfer rate (required rate) to which the individual data of the mobile station 200a is to be matched, and the possible transfer rate calculated in step S18. When the possible transfer rate is equal to or higher than the desired rate, the process proceeds to step S20. When the transfer rate is less than the required rate, the process proceeds to step S23.

(Step S20) The MBSFN request extraction unit 116 transmits the MBSFN request extracted in step S13 to the MCE 300.

(Step S21) The reception control information generating unit 142 generates a reception control information indicating that both the individual data and the MBMS data that can be received by the mobile station 200a are received. The radio transmission unit 147 transmits the generated reception control information to the mobile station 200a using the PDCCH.

(Step S22) The scheduler 121 performs scheduling of individual data for the mobile station 200a. At this time, the scheduler 121 is controlled to be different from the CC of the CC that transmits the MBSFN, and the subframe of the same timing as the MBSFN subframe is not used for the transmission of the individual data to the mobile station 200a.

(Step S23) The reception control information generating unit 142 generates a reception control information indicating that the MBMS data of the MBSFN cannot be received. The radio transmission unit 147 transmits the generated reception control information to the mobile station 200a using the PDCCH. Furthermore, the MBSFN request received in step S13 is discarded.

(Step S24) The scheduler 121 performs scheduling of individual data for the mobile station 200a. At this time, the scheduler 121 may also use a sub-frame of the same timing as the MBSFN subframe in the CC different from the CC transmitting the MBSFN for the transmission of the individual data to the mobile station 200a.

In this way, the base station 100 can process the individual data without being restricted by the MBMS data transmission when the mobile station that requests the MBSFN to request the parallel processing of the general CP and the extended CP. In addition, when the mobile station requesting the source cannot process the general CP and the extended CP in parallel, it is judged whether the MBMS data and the individual data can be transmitted at different timings. When it is not possible to send at different timings, the mobile station requesting the source is instructed to receive the individual data preferentially (do not receive the MBMS data).

Further, in the second embodiment, when the mobile station 100 is unable to simultaneously receive both the MBMS data and the individual data, the base station 100 instructs the mobile station to give priority to the individual data. However, the mobile station may also be instructed to give priority to MBMS data. Further, in the second embodiment, the base station 100 transmits and receives the control information regardless of whether or not the mobile station requesting the source can receive both the MBMS data and the individual data. However, the reception control information may be transmitted only when the two parties cannot be simultaneously received.

Further, in the example of Fig. 22, it is judged whether or not the mobile station requesting the source can process the general CP and the extended CP in parallel, and when the parallel processing is impossible, it is judged that the individual data conforms to the required rate. However, it is also possible to initially determine whether the individual data meets the required rate, and if it does not, determine whether the mobile station requiring the source can process the general CP and the extended CP in parallel.

Figure 23 is a flow chart showing the receiving process of the mobile station. The processing shown in Fig. 23 will be described below in accordance with the step number.

(Step S31) The category notification generation unit 271 generates a category notification (category ID) indicating the type of the own station. The radio transmission unit 275 transmits the generated category notification on the PUSCH.

(Step S32) The radio reception unit 220 receives the MBSFN service information from the base station 100 in PMCH (MCCH). The MBSFN control information capturing unit 243 retrieves the MBSFN service information.

(Step S33) The MBSFN control unit 251 selects the MBMS service based on the MBSFN service information and the user operation received in step S32. The MBSFN request generation unit 272 generates an MBSFN request indicating the selected MBMS service. The radio transmission unit 275 transmits the generated MBSFN request to the base station 100 on the PUSCH.

(Step S34) The radio reception unit 220 receives the reception control information from the base station 100 with the PDCCH. The reception control information capturing unit 242 retrieves the reception control information. The terminal control unit 260 determines whether or not the MBMS data and the individual data can be received from the reception control information. When both sides can be received, the step proceeds to step S35. When the MBMS data cannot be received, the step proceeds to step S38.

(Step S35) The terminal control unit 260 determines whether or not the general CP and the extended CP can be simultaneously received based on the performance information stored in the performance information storage unit 253. When it is possible to simultaneously receive, the process proceeds to step S36. When it is not possible to receive at the same time, the process proceeds to step S37.

(Step S36) The terminal control unit 260 sets the two receiving systems of the demodulation and decoding unit 230 so that the MBMS data and the individual data can be simultaneously received.

(Step S37) The terminal control unit 260 performs setting so that the MBMS data and the individual data can be received at the time of collection.

(Step S38) The terminal control unit 260 is configured to receive the individual data transmitted by the base station 100 without receiving the MBMS data received by the MBSFN.

Fig. 24 is a first sequence diagram showing an example of data transmission control. The first sequence example shows a case where the mobile station 200 simultaneously receives MBMS data and individual data.

The mobile station 200 transmits a class notification indicating that CPs of different lengths can be processed in parallel, and transmits the notification to the base station 100 (step S111). The base station 100 transmits a DL radio frame including the RS of the pilot signal (step S112). The mobile station 200 measures the reception quality using the RS transmitted by the base station 100, and transmits quality information such as CQI to the base station 100 (step S113). The base station 100 schedules the individual data for the mobile station 200, and transmits the individual control information to the mobile station 200 on the PDCCH, and transmits the individual data on the PDSCH (steps S114, S115).

The MCE 300 transmits the MBSFN service information of the MBMS service list to the base station 100 (step S116). The base station 100 transmits the MBSFN service information to the MCCH mapped to the PMCH (step S117). The mobile station 200 selects the used MBMS service and transmits the MBSFN request to the base station 100 (step S118). The base station 100 determines from the category of the mobile station 200 that the mobile station 200 can simultaneously receive the MBMS data and the individual data (step S119).

The base station 100 transmits the MBSFN request to the MCE 300 (step S120). The MCE 300 transmits the MBSFN control information indicating the transmission timing of the MBMS data and the like to the base station 100 (step S121). The base station 100 transmits reception control information indicating that both the MBMS data and the individual data can be received, and transmits it to the mobile station 200 (step S122). The base station 100 transmits the MBSFN control information to the MCCH mapped to the PMCH (step S123).

The base station 100 receives the MBMS data received from the MBMS gateway 420 for MTCH transmission mapped to the PMCH (step S124). Further, at the same timing as the MBMS data, the mobile station 200 transmits the individual control information on the PDCCH, and transmits the individual data received from the SAE gateway 430 on the PDSCH (steps S125 and S126). The mobile station 200 retrieves the MBMS data with reference to the MBSFN control information. Further, individual data is extracted in parallel with the MBMS data by referring to individual control information.

Fig. 25 is a second sequence diagram showing an example of data transmission control. The second sequence example shows a case where the mobile station 200a receives the MBMS data and the individual data at the time of the score.

The mobile station 200a transmits a class notification indicating that the CPs of different lengths cannot be processed in parallel, and transmits them to the base station 100 (step S131). The processing of steps S132 to S138 is the same as the above-described steps S112 to S118. The base station 100 determines that the MBMS data and the individual data cannot be received simultaneously from the category of the mobile station 200a. Further, the possible transmission rate of the individual data is calculated, and here, it is judged that the required rate at which the individual data is not transmitted simultaneously with the MBMS data is satisfied (step S139).

The processing of steps S140 to S143 is the same as the above-described steps S120 to S123. The base station 100 will receive the MBMS data from the MBMS gateway 420 for MTCH transmission mapped to the PMCH (step S144). Further, at the timing different from the MBMS data, the mobile station 200a transmits the individual control information on the PDCCH, and transmits the individual data received from the SAE gateway 430 on the PDSCH (steps S145 and S146). The mobile station 200 is in a different time sequence. The MBMS data is extracted with reference to the MBSFN control information, and the individual data is extracted with reference to the individual control information.

Fig. 26 is a third sequence diagram showing an example of data transmission control. The third sequence example shows a case where the mobile station 200a does not receive the MBMS data.

The mobile station 200a transmits a class notification indicating that the CPs of different lengths cannot be processed in parallel, and transmits them to the base station 100 (step S151). The processing of steps S152 to S158 is the same as the above-described steps S112 to S118. The base station 100 determines that the MBMS data and the individual data cannot be received simultaneously from the category of the mobile station 200a. Further, the possible transmission rate of the individual data is calculated, and here, it is judged that the required rate at which the individual data is not transmitted simultaneously with the MBMS data is not satisfied (step S159).

The base station 100 transmits reception control information indicating that the MBMS data of the MBSFN cannot be received, and transmits it to the mobile station 200a (step S160). The base station 100 transmits the individual control information to the mobile station 200a at the same timing as the MBMS data, and transmits the individual data received from the SAE gateway 430 on the PDSCH (steps S161 and S162). The mobile station 200a receives individual data without receiving MBMS data.

Furthermore, when the mobile station 200a is notified that the MBMS data cannot be received, the MBMS data may be received after the transmission of the individual data having the desired rate is completed, or after the required rate is lowered. The base station 100 can also notify the mobile station 200a of the gist of receiving the MBMS data. Further, in Figs. 24 to 26, an example in which the mobile stations 200 and 200a perform the MBSFN request in the reception of the individual data is shown. However, when the mobile stations 200 and 200a receive the individual data set at the required rate during the reception of the MBMS data, the base station 100 can perform the same control. Further, the base station 100 can also transmit, as the reception control information, information indicating that only the MBMS data and the individual data can receive the individual data to the mobile station 200a.

Further, in Figs. 24 to 26, the base station 100 receives the request from the mobile stations 200 and 200a, and transmits the reception control information to the mobile stations 200 and 200a. However, before receiving the request of the mobile stations 200 and 200a, the base station 100 moves forward. The station 200, 200a notifies the reception control information.

Fig. 27 is a fourth sequence diagram showing an example of data transmission control. The fourth sequence example is the same as Fig. 26, and shows that the mobile station 200a does not receive the MBMS data.

The mobile station 200a transmits a class notification indicating that the CPs of different lengths cannot be processed in parallel, and transmits them to the base station 100 (step S171). The processing of steps S172 to S177 is the same as the above-described steps S112 to S117. When the base station 100 receives the individual data set at the required rate, the base station 100 determines that both the individual data and the MBMS data can be received regardless of the presence or absence of the MBSFN request (step S178).

When the mobile station 200a cannot simultaneously receive both the individual data and the MBMS data, the base station 100 indicates that the reception control information of the MBMS data cannot be received, and transmits it to the mobile station 200a in advance (step S179). The mobile station 200a receives the reception control information, and prohibits the transmission of the MBSFN request until the transmission/reception of the individual data having the desired rate is completed or the required rate is lowered. The base station 100 is paired with the mobile station 200a, transmits individual control information on the PDCCH, and transmits the individual data received from the SAE gateway 430 on the PDSCH (steps S180, S181).

According to the mobile communication system of the second embodiment, the individual data of the mobile station 200 capable of processing the CPs of different lengths in parallel can effectively utilize the radio resources of the plurality of CCs by allowing the same timing transmission as the MBMS data. . In addition, with regard to the individual data of the mobile station 200a, which cannot process CPs of different lengths in parallel, by attempting a schedule such as transmission at a different timing than the MBMS material, wasteful data transmission can be suppressed. Further, when the individual data cannot be transmitted at a different timing from the MBMS data, the mobile station 200a is instructed to preferentially receive the individual data, and the MBMS data is not received, thereby reducing the burden of the receiving process of the mobile station 200a.

[Third embodiment]

Next, a third embodiment will be described. The difference from the second embodiment will be mainly described, and the description of the same matters will be omitted. The mobile communication system according to the third embodiment differs from the second embodiment in that the mobile station is notified of a method in which the MBMS data cannot be received.

The mobile communication system according to the third embodiment can be realized by the same system configuration as the second embodiment shown in Fig. 2. Further, the mobile station according to the third embodiment can be realized by the same block structure as the mobile stations 200 and 200a of the second embodiment.

Fig. 28 is a block diagram showing a base station of the third embodiment. The base station 100b includes an antenna 111, a radio reception unit 112, a demodulation and decoding unit 113, a class notification extraction unit 114, a quality information acquisition unit 115, an MBSFN request extraction unit 116, a scheduler 121b, and a category information storage unit 122. The device control unit 130, the individual control information generating unit 141, the reception control information generating unit 142b, the MBSFN control information generating unit 143, the RS generating unit 144, the mapping unit 145, the encoding and transforming unit 146, and the wireless transmitting unit 147.

When the MBSFN request extraction unit 116 requests the MBSFN request, the scheduler 121b determines whether the mobile station requesting the mobile station can accept the MBMS data in addition to the individual data according to the type of the mobile station requested to be used. When it is judged that the MBMS data cannot be received, the scheduler 121b is directed to the reception control information generating unit 142b, and instructs the MBCEN rejection notification indicating that the MBSFN request for rejection is accepted, and transmits it to the MCE 300a, which will be described later. The reception control information generating unit 142b generates an MBSFN rejection notification in response to an instruction from the scheduler 121b, and transmits it to the MCE 300a.

Figure 29 is a block diagram showing the MCE of the third embodiment. The MCE 300a includes an MBSFN request acquisition unit 311, a scheduler 312, an MBSFN control unit 313a, and an MBSFN rejection notification acquisition unit 314.

The MBSFN rejection notification acquisition unit 314 receives the MBSFN rejection notification from the base station 100b, and outputs it to the MBSFN control unit 313a. When the MBSFN rejection notification unit 314 obtains the MBSFN rejection notification, the MBSFN control unit 313a transmits the reception control information indicating that the MBMS service requested by the mobile stations 200 and 200a cannot be used to the mobile stations 200 and 200a via the base station 100b.

Fig. 30 is a fifth sequence diagram showing an example of data transmission control. The fifth sequence example shows a case where the mobile station 200a does not receive the MBMS data. The fifth sequence example shows a case where the mobile station 200a does not receive the MBMS data.

The mobile station 200a transmits a class notification indicating that the CPs of different lengths cannot be processed in parallel, and transmits the notification to the base station 100b (step S211). Steps S212 to S218 are the same as steps S112 to S118 described in the second embodiment. The base station 100b determines that the MBMS data and the individual data cannot be received simultaneously from the category of the mobile station 200a. Further, the possible transmission rate of the individual data is calculated, and here, it is judged that the required rate at which the individual data is not transmitted simultaneously with the MBMS data is not satisfied (step S219).

The base station 100b transmits an MBSFN rejection notification including information indicating the requested MBMS service to the MCE 300a (step S220). The MCE 300a transmits the reception control information rejecting the gist of the MBSFN request to the base station 100b (step S221). The base station 100b transmits the reception control information received from the MCE 300a to the mobile station 200a (step S222). The base station 100b transmits the individual control information to the mobile station 200a at the same timing as the MBMS data, and transmits the individual data received from the SAE gateway 430 on the PDSCH (steps S223 and S224). The mobile station 200a receives individual data without receiving MBMS data.

According to the mobile communication system of the third embodiment, the same effects as those of the second embodiment can be obtained. Further, the MCE 300a can collectively manage the transmission status of the MBSFN request from the mobile stations 200 and 200a and the permission thereof.

The above is merely a representation of the principles of the invention. In other words, many variations and modifications can be made by the same person, and the present invention is not limited to the above-described and illustrated correct configurations and application examples, and all the corresponding modifications and equivalents are considered as attached. The scope of the invention is set forth in the claims and its equivalents.

10, 20, 20a. . . Wireless communication device

11. . . Sending department

12. . . Control department

twenty one. . . Receiving department

twenty two. . . Notification department

100, 100a, 100b. . . Base station

101, 102. . . Category table

111, 211. . . antenna

112, 220, 220a. . . Wireless receiving unit

113, 230. . . Demodulation and decoding unit

114. . . Category notification capture department

115. . . Quality Information Capture Department

116, 311. . . MBSFN requires the acquisition department

121, 312. . . Scheduler

122. . . Category information memory

130. . . Device control unit

131, 261. . . Different CP reception control unit

132, 262. . . Frequency control unit

133, 263. . . Receive frequency bandwidth setting unit

134, 264. . . Receiving frequency setting unit

135, 265. . . Transmission frequency setting unit

136, 266. . . Transmission frequency bandwidth setting unit

141. . . Individual control information generation department

142. . . Receiving control information generating unit

143. . . MBSFN Control Information Generation Department

144. . . RS generation department

145. . . Mapping department

146, 274. . . Code modulation department

147, 275. . . Wireless transmission unit

200, 200a. . . Mobile station

221. . . LAN

222, 222a. . . Quadrature demodulator

223, 223a. . . ADC

231, 231a. . . CP processing department

232, 232a. . . FFT section

233, 233a. . . Demodulation unit

234, 234a. . . PS conversion unit

235, 235a. . . Decoding department

241. . . Individual control information capture department

242. . . Receiving control information acquisition department

243. . . MBSFN Control Information Capture Department

244. . . RS capture department

251, 313. . . MBSFN Control Department

252. . . Quality measurement department

253. . . Performance information memory

260. . . Terminal control department

271. . . Category notification generation department

272. . . MBSFN Requirements Generation Department

273. . . Quality Information Generation Department

300. . . MCE

410. . . MCE

420. . . MBMS gateway

430. . . SAE gateway

CC. . . Component carrier

DL. . . Down chain

GI. . . Protection interval

S11 to S24, S31 to S38, S111 to S126, S131 to S146, S151 to S162, S171 to S181, and S211 to S224. . . step

UL. . . Winding

Fig. 1 is a view showing a wireless communication system according to the first embodiment.

Fig. 2 is a view showing a mobile communication system according to a second embodiment.

Fig. 3 is a view showing a setting example of a component carrier.

Fig. 4 is a view showing a first example of carrier aggregation.

Fig. 5 is a view showing a second example of carrier aggregation.

Fig. 6 is a view showing a setting example of the MBSFN area.

Figure 7 is a diagram showing an example of transmission of individual data and MBMS data.

Fig. 8 is a view showing a configuration example of a radio frame.

Fig. 9 is a view showing a structural example of a symbol.

Figure 10 is a diagram showing the synthesis method of the MBMS data signal.

Figure 11 is a diagram showing a setting example of a general subframe and an MBSFN subframe.

Fig. 12 is a table showing a first category example of the mobile station.

Figure 13 is a table showing a second category of the mobile station.

Fig. 14 is a block diagram showing a base station of the second embodiment.

Figure 15 is a block diagram showing the device control unit of the base station.

Figure 16 is a block diagram showing a mobile station according to a second embodiment.

Figure 17 is a block diagram showing the terminal control unit of the mobile station.

Figure 18 is a block diagram showing a first example of the receiving circuit of the mobile station.

Figure 19 is a block diagram showing a second example of the receiving circuit of the mobile station.

Figure 20 is a block diagram showing a third example of the receiving circuit of the mobile station.

Figure 21 is a block diagram showing the MCE of the second embodiment.

Figure 22 is a flow chart showing the transmission processing of the base station.

Figure 23 is a flow chart showing the receiving process of the mobile station.

Fig. 24 is a first sequence diagram showing an example of data transmission control.

Fig. 25 is a second sequence diagram showing an example of data transmission control.

Fig. 26 is a third sequence diagram showing an example of data transmission control.

Fig. 27 is a fourth sequence diagram showing an example of data transmission control.

Fig. 28 is a block diagram showing a base station of the third embodiment.

Figure 29 is a block diagram showing the MCE of the third embodiment.

Fig. 30 is a fifth sequence diagram showing an example of data transmission control.

10, 20, 20a. . . Wireless communication device

11. . . Sending department

12. . . Control department

twenty one. . . Receiving department

twenty two. . . Notification department

Claims (7)

A wireless communication device that communicates with another wireless communication device by using a plurality of frequency bands, and has a transmission unit that transmits a protection interval using a first length in a first frequency band of the plurality of frequency bands 1 data, transmitting, by the second frequency band of the plurality of frequency bands, the second data of the second length of the guard interval; and the control unit obtaining, from the other wireless communication device, whether the first data can be processed in parallel And performance information of the protection interval of the second length, and controlling the sender of at least one of the first and second materials based on the performance information. The wireless communication device according to claim 1, wherein the control unit controls the first data to be transmitted at different timings when the performance information indicates that the first and second length guard intervals cannot be processed in parallel. The second information mentioned above. The wireless communication device of claim 1, wherein: the plurality of other wireless communication devices including the other wireless communication device are capable of processing whether the protection intervals of the first and second lengths can be processed in parallel. The performance items of the above or more are classified into a plurality of categories; the control unit obtains information indicating the type of the other wireless communication device as performance information, and controls according to the types of the other wireless communication devices. For example, the wireless communication device of claim 1 of the patent scope, wherein: The first data includes data receivable by a plurality of other wireless communication devices of the other wireless communication device; the second data is data for the other wireless communication device; and the control unit controls transmission of the second data. A wireless communication device is a communication device that communicates with another wireless communication device by using a plurality of frequency bands, and is characterized in that the receiving unit receives the first data and uses the protection interval of the first length in parallel or at different timings. In the second data of the second length protection interval, the first data is transmitted in a first frequency band of the plurality of frequency bands, and the second data is transmitted in a second frequency band of the plurality of frequency bands; and a notification unit Before receiving the first and second data, the other wireless communication device is notified of whether the receiving unit can process the performance information of the first and second lengths of the protection interval in parallel. A wireless communication system that performs communication using a plurality of frequency bands, and includes: a first wireless communication device and a second wireless communication device; and the first wireless communication device includes a notification unit that notifies whether processing is possible in parallel And the second wireless communication device includes: a transmitting unit that transmits the first data of the first length of the guard interval by using the first frequency band of the plurality of frequency bands Transmitting the guard interval using the second length in the second frequency band of the plurality of frequency bands The second information; and the control unit controls the sender of at least one of the first and second materials based on the notified performance information. A wireless communication method is a wireless communication method for a wireless communication system that communicates with a first wireless communication device and a second wireless communication device by using a plurality of frequency bands, and is characterized in that the first wireless communication device is in the foregoing 2. The wireless communication device notifies whether performance information of the first and second length guard intervals can be processed in parallel; and the second wireless communication device controls the use of the first length guard interval based on the notified performance information And transmitting, by the first data, at least one of the second data of the protection interval of the second length; and the second wireless communication device, according to the control result, the first frequency band of the plurality of frequency bands in parallel or at different timings The first data is transmitted, and the second data is transmitted in a second frequency band of the plurality of frequency bands.