TWI426750B - Mobile communication system, radio communication apparatus, mobile communication apparatus, and radio communication method - Google Patents

Description

Mobile communication system, wireless communication device, mobile communication device and wireless communication method Field of invention

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

Background of the invention

Nowadays, mobile communication systems such as mobile phone systems or wireless metropolitan area networks (MANs) are mostly utilized. In addition, in order to pursue higher speed and large capacity of wireless communication, active discussions on the next generation of mobile communication technologies continue.

For example, in the 3rd Generation Partnership Project (3GPP), one of the standardization bodies, the proposal to have the largest communication to the 20MHz band is called LTE (Long Term Evolution). Communication specifications of the technology (for example, refer to Non-Patent Document 1). Furthermore, as a communication standard for the next generation of LTE, there is proposed a communication standard called LTE-A (LTE-Advanced) that can communicate to five bands of 20 MHz (that is, a band of 100 MHz) (for example, Refer to Non-Patent Document 2).

Such a next-generation mobile communication system is sometimes not defined as a system different from the previous generation of mobile communication systems, but is defined as an extension of the previous generation mobile communication system. In this case, the base station or the relay station corresponding to the communication specifications of the next generation may also be required to have the rear interchangeability of the mobile station that can accommodate the communication specifications corresponding to the previous generation. For example, the above LTE-A is proposed as a communication specification for LTE expansion. Therefore, the base station or the relay station corresponding to the LTE-A is required to accommodate both the mobile station corresponding to the LTE and the mobile station corresponding to the LTE-A.

Further, in the case where the base station transmits an individual control signal to its own terminal, a communication system is proposed which can use the expanded radio resource area as an individual control channel to transmit an individual control signal (for example, refer to Patent Document 1). Moreover, in the LTE system, it is proposed to prohibit the base station from all the mobile stations by using the Access Barring Information which informs the channel of the System Information Block (SIB). The accessor (for example, refer to Section 6.3.1 of Non-Patent Document 1).

Advanced technical literature Patent literature

Patent Document 1: Japanese Patent Laid-Open Publication No. 2009-218813

Non-patent literature

Non-Patent Document 1: 3GPP (3rd Generation Partnership Project), "Evolved Universal Terrestrial Radio Access (E-UTRA) Radio Resource Control (RRC); Protocol specification", 3GPP TS 36. 331 V9.0.0. 2009-09.

Non-Patent Document 2: 3GPP (3rd Generation Partnership Project), "Feasibility study Further Advancements for E-UTRA (LTE-Advanced)", 3GPP TR 36. 912 V9.0.0. 2009-09.

Summary of invention

However, the wireless communication device such as a base station or a relay station corresponding to the communication specifications of the next generation is intended to inform the cells under its control (Cell) of information that is not included in the communication specification information of the previous generation. Happening. For example, a plurality of frequency bands (for example, 20 MHz × 5) can be used in LTE-A with respect to one frequency band (for example, 20 MHz) that can be used in LTE. Therefore, it is conceivable that the base station or the relay station corresponding to the LTE-A can inform the information not addressed in the LTE and for the complex frequency band.

However, the wireless communication device that can accommodate both the mobile station of the previous generation and the mobile station of the next generation will be a problem as to how to inform the notification information of the communication specifications not included in the previous generation. Further, the above-mentioned problem of the notification information is not limited to the situation in which the wireless communication device accommodates the mobile station corresponding to the LTE and the mobile station corresponding to the LTE-A, but is a problem that generally occurs when a plurality of types of mobile stations are accommodated.

In view of the above, the present invention aims to provide a mobile communication system, a wireless communication device, a mobile communication device, and a wireless communication method that can efficiently realize communication control in which a plurality of types of mobile stations are considered.

In order to solve the above problems, a mobile communication system having a wireless communication device and a mobile communication device is provided. The wireless communication device includes a first generation unit, a second generation unit, and a transmission unit. The first generation unit generates first notification information, and the first notification information can be used for processing of the first and second types of mobile stations. The second generation unit is configured to generate second notification information, the second notification information It can be used for the processing of the mobile station of the second type described above. The transmitting unit transmits the first notification information on the first notification channel and transmits the second notification information on the second notification channel. The mobile communication device of the mobile station of the second type includes a receiving unit and a control unit. The receiving unit is configured to receive the first notification information transmitted by the first notification channel and the second notification information transmitted by the second notification channel. The control unit controls the communication with the wireless communication device using the received first and second notification information.

Moreover, in order to solve the above problems, a wireless communication method including a mobile communication system of a wireless communication device and a mobile communication device is provided. In the wireless communication method, the wireless communication device generates the first notification information and the second notification information, and the first notification information is used by the processor of the first and second types of mobile stations, and the second notification information system The processor of the mobile station of the second type. In the wireless communication device, the first notification information is transmitted on the first notification channel, and the second notification information is transmitted on the second notification channel. The wireless communication device of the mobile station of the second type receives the first notification information transmitted by the first notification channel and the second notification information transmitted by the 2 notification channel. The mobile communication device controls the communication with the wireless communication device using the received first and second notification information.

According to the above mobile communication system, wireless communication device, mobile communication device, and wireless communication method, communication control considering the existence of a plurality of types of mobile stations can be efficiently realized.

The above and other objects and features of the present invention will become apparent from the accompanying drawings and claims advantage.

Form for implementing the invention

Hereinafter, the present embodiment will be described in detail with reference to the drawings.

[First Embodiment]

Fig. 1 is a view showing a mobile communication system according to the first embodiment. The mobile communication system according to the first embodiment includes a wireless communication device 1 and mobile communication devices 2 and 3.

The wireless communication device 1 can perform wireless communication with the mobile stations of the first type and the second type. The wireless communication device 1 is, for example, a base station or a relay station that transmits wireless communication between the base station and the mobile station. The mobile communication device 2 is a mobile station of the second type, and the mobile communication device 3 is a mobile station of the first type. The mobile communication devices 2, 3 are, for example, wireless terminal devices such as mobile phones or mobile information terminal devices.

The wireless communication device 1 includes a first generation unit 1a, a second generation unit 1b, and a transmission unit 1c. The first generation unit 1a generates first notification information that is referred to by the mobile stations of both the first type and the second type. The second generation unit 1b generates a second notification information that the mobile station of the first type does not refer to, but the second type of mobile station refers to. The transmitting unit 1c transmits (notifies) the first notification information generated by the first generating unit 1a to the first notification channel 4a. Further, the transmitting unit 1c transmits (notifies) the second notification information generated by the second generation unit 1b to the second notification information 4b different from the first notification channel 4a.

The mobile communication device 2 includes a receiving unit 2a and a control unit 2b. The receiving unit 2a receives the first transmission from the first communication channel 4a from the wireless communication device 1. Inform the information. Further, the receiving unit 2a receives the second notification information transmitted by the second notification channel 4b. The control unit 2b refers to both the first and second notification information received by the receiving unit 2a to control communication with the communication device 1. On the other hand, the mobile communication device 3 does not receive the second notification information although it receives the first notification information. That is, the mobile communication device 3 controls communication with the communication device 1 without referring to the second notification information.

Here, the wireless communication device 1 can also perform wireless communication using a plurality of frequency bands. In this case, the wireless communication device 1 may transmit the information (for example, the information of the bandwidth of the display band) for connecting to the wireless communication device 1 using the relevant frequency band for each frequency band, and transmit it to the first notification information. . Furthermore, information indicating the relationship between the complex frequency band and the type of the mobile station may be included in the second notification information transmission.

On the other hand, the mobile communication device 2 can determine the frequency band usable by the mobile station of the second type among the plurality of frequency bands based on the second notification information. Further, it is also possible to connect the wireless communication device 1 with the frequency band based on the first notification information for the frequency band judged to be usable. Information showing the relationship between the complex frequency band and the type of the mobile station, for example, can be defined as information having the following meaning.

1) Information on the frequency band that can be used by the mobile station of the second type

2) Information specifying the frequency band that cannot be used by the mobile station of the second type

3) The frequency band used for the transmission of the information is the band that can be used by the mobile station of the second type.

4) The frequency band used for the transmission of the information is a band that is not usable by the mobile station of the second type.

Moreover, the wireless communication device 1 can also assign identification information to the plurality of frequency band. The identification information can be used to indicate the relationship between the plural frequency band and the type of the mobile station in the second notification information. As the identification information, for example, a cell ID, a unique number within the same cell ID, or the like can be used. When a cell ID is used as the identification information, one cell will be assigned a plurality of cell IDs. Moreover, it is possible for the mobile station to identify a plurality of frequency bands (virtual ground) as different cells.

The first notification channel 4a is set, for example, in a plurality of frequency bands. The second notification channel 4b may be set to a plurality of frequency bands or to only a part of the frequency bands. In the latter case, it is conceivable to set it in a predetermined frequency band (for example, a frequency band at the center on the frequency axis) or a frequency band that can be used in a mobile station of the second type. Further, the second notification channel 4b may be set adjacent to the first notification channel 4a in the radio resource region specified by the frequency and time. Alternatively, the second notification channel 4b may be set adjacent to the synchronization channel for transmitting the synchronization signal.

Further, this mobile communication system can be implemented, for example, as an LTE-A system. In this case, the mobile station of the first type can be a mobile station corresponding to LTE, and the mobile station of the second type can be realized by a mobile station corresponding to LTE-A. Further, the first notification channel 4a can be realized as a notification channel defined by LTE and LTE-A, and the second notification channel 4b can be realized as an extension notification channel not defined by LTE. Further, in LTE-A, the above-mentioned plural frequency bands may be referred to as a component carrier (CC) or a carrier component (CC), respectively.

In the mobile communication device according to the first embodiment, the first communication information and the second notification information are generated by the wireless communication device 1, and the first notification information is used by the processors of the first and second types of mobile stations. The second information system The processor used for the mobile station of the second type. The first notification information is transmitted by the first notification channel 4a. The second notification information is transmitted in the second notification channel 4b. Further, the mobile communication device 2 receives the first notification information transmitted by the first notification channel 4 and the second notification information transmitted by the second notification channel 4b. The communication between the wireless communication device 1 and the mobile communication device 2 is controlled based on the received first and second notification information.

In other words, the notification information that is not referred to (or cannot be referred to) by the mobile station of the first type but is referred to by the mobile station of the second type is different from the notification information that is commonly referred to by the mobile stations of the first type and the second type. Inform. Thereby, communication control in which a plurality of types of mobile stations are considered can be efficiently realized.

For example, as the implementation of the LTE-A system, it may be considered to inform the notification channel defined by LTE by the conventional notification channel, and further, the notification information to be added by LTE-A may be notified by the extension notification channel. . In this case, the LTE-compatible mobile station (LTE-A non-corresponding mobile station) can receive the original notification information on the one hand, that is, the LTE-A system with the efficiency of rear interchangeability can be realized.

Furthermore, since the second notification information includes information indicating the relationship between the complex frequency band and the type of the mobile station, the allocation of the radio resources can be easily controlled. That is, by designating and notifying the frequency band to be used for the second type of mobile station (or not intended to be used), the second type of mobile station can be easily induced to a part of the frequency band. In particular, in the case of the LTE-A system, only one frequency band is used for the mobile station corresponding to LTE, and since the mobile station corresponding to LTE can use a plurality of frequency bands, the aforementioned induction is advantageous for the wireless resource. It is useful to increase this with efficiency.

In the second embodiment below, a case where the wireless communication method according to the first embodiment is applied to the LTE-A system is considered. However, the aforementioned wireless communication method can of course be applied to other types of mobile communication systems.

[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 base station 100, a relay station 200, and mobile stations 300 and 400. This mobile communication system corresponds to the communication specifications of LTE-A.

The base station 100 is a wireless communication device that can wirelessly communicate with the mobile stations 300, 400 directly or through the relay station 200. The base station 100 is connected to a wired upper network (not shown), and performs data transfer between the upper network and the mobile stations 300 and 400. The base station 100 manages three cells (also referred to as segments) under its control. The base station 100 uses five component carriers (hereinafter referred to as CC) for wireless communication.

The relay station 200 is a wireless communication device that relays wireless communication between the base station 100 and the mobile stations 300 and 400 when the mobile stations 300 and 400 are present in the subordinate cells. Relay station 200, sometimes referred to as a transit station. The relay station 200 uses five CCs in the same frequency band as the base station 100 in the wireless communication system.

The mobile stations 300 and 400 are wireless terminal devices that connect the base station 100 or the relay station 200 to perform wireless communication, for example, a mobile phone or a mobile information terminal device. The mobile station 300, in the downward link (the wireless link from the base station 100 or the relay station 200 to the mobile station 300), can simultaneously use up to 5 CCs to receive data, and in the upward link (from the mobile station 300 to the base station 100) Or relay station 200 wireless link), can use up to 2 CC receiving data at the same time. On the other hand, the mobile station 400 transmits/receives data using only one CC in both the downward link and the upward link.

Here, in the present embodiment, a mobile station that does not use a plurality of CCs is referred to as an LTE mobile station, and a mobile station that can use a plurality of CCs can be referred to as an LTE-A mobile station. The mobile station 300 is an LTE-A mobile station, and the mobile station 400 is an LTE mobile station. In the base station 100 and the relay station 200, both the LTE-A mobile station and the LTE mobile station can be connected.

In addition, in 3GPP, the communication specifications of LTE are defined by the specifications of the 8th edition, and the communication specifications of LTE-A are defined by the specifications of the 10th edition. However, all mobile stations corresponding to the 10th edition are not limited to mobile stations (LTE-A mobile stations) that can use a plurality of CCs. That is, there is also a possibility that an LTE mobile station corresponding to the 10th edition exists. Further, in the present embodiment, the mobile station corresponding to the ninth version is handled as an LTE mobile station in the same manner as the mobile station corresponding to the eighth version.

Fig. 3 is a view showing a setting example of a component carrier. The base station 100 and the relay station 200 use five CCs as shown in FIG. For the case of two-way communication using Frequency Division Duplex (FDD), ensure CC # 1~# for Down-link (DL) and Up-link (UL) respectively. 5 frequency band. Hereinafter, in the case of only CC #1 to #5, it may refer to a group of DL bands and UL bands. The frequency bands of the DL and the UL CC are both 20 MHz, and the overall frequency band is 100 MHz. The base station 100 and the relay station 200 perform radio resource allocation (scheduling) for CC #1 to #5, respectively.

Further, in the example of Fig. 3, although two-way communication is realized by FDD, it is also possible to realize two-way communication by Time Division Duplex (TDD). In this case, five CCs are set on the frequency axis without distinguishing between DL and UL. Further, in the example of Fig. 3, although the bandwidth of all CCs is set to 20 MHz, it may be set to another bandwidth (for example, 5 MHz, 10 MHz, or 15 MHz). Also, the bandwidth of all CCs does not have to be set to be the same.

Further, in the example of Fig. 3, the UL radio resource is set on the low frequency side, and the DL radio resource is set on the high frequency side. Since the signal transmission loss of the lower frequency becomes smaller, the UL radio resource is set to the low frequency side, and the transmission power of the mobile stations 300 and 400 can be depressed. However, UL radio resources can also be configured in reverse to DL radio resources.

In this way, the mobile station 300 can use a wider bandwidth than the bandwidth of one CC (for example, 20 MHz) by collecting a plurality of CCs in CC #1 to #5 (for example, 40 MHz, 60 MHz, 80MHz, 100MHz, etc.) Send/receive data.

Here, CC #1~# 5 may be disposed in any one of frequency bands of 800 MHz band, 2.5 GHz band, 3.5 GHz band, etc., or may be dispersedly disposed in different complex frequency bands. A continuous or non-contiguous CC aggregator belonging to the same frequency band is sometimes referred to as Carrier Aggregation. On the other hand, CC aggregators belonging to different frequency bands are sometimes referred to as spectrum aggregation.

Fig. 4 is a view showing a first example of carrier aggregation. In the example of Fig. 4, it is in the 3.5 GHz band, as a possible band for wireless communication, preparing four discontinuous 5 MHz wide bands, and three discontinuous 20 MHz wide bands. and Moreover, by merging four 5 MHz bands, CC #2 of 20 MHz width is formed. Also, a band of 20 MHz wide is defined as CC #3.

For example, CC #2, CC #3 can be used as a 40 MHz band (logically one band) by carrier aggregation. In this case, the mobile station 300 actually uses four 5 MHz wide bands and one 20 MHz wide band belonging to the 3.5 GHz band. Further, although the frequency band belonging to the 3.5 GHz band is taken as an example in FIG. 4, in other frequency bands such as the 800 MHz band, it is also possible to use a band having a frequency wider than 20 MHz.

Fig. 5 is a view showing a second example of carrier aggregation. In the example of Fig. 5, in the 3.5 GHz band, a continuous 80 MHz wide band is prepared as a possible band for wireless communication. Moreover, the 80 MHz wide band is divided into four, which are defined as CC # 2~CC # 5 of 20 MHz width.

For example, the mobile station 300 can use CC #2, CC #3 by carrier aggregation and use it as a frequency band of 40 MHz (logically one frequency band). In this case, in reality, the mobile station 300 is a part of a band of 80 MHz wide which is continuous in the 3.5 GHz band.

Figure 6 is a diagram showing an example of spectrum aggregation. In the example of Fig. 6, in the 2 GHz band, a continuous 20 MHz wide band is prepared as a possible band for wireless communication. Also, in the 3.5 GHz band, a continuous 80 MHz wide band is prepared as a possible band for wireless communication. Moreover, the band of 20 MHz wide in the 2 GHz band is defined as CC #1, and the band of 80 MHz wide in the 3.5 MHz band is divided into four, which are defined as CC # 2~CC # 5 of 20 MHz width.

The mobile station 300, for example, can use CC #1~# 5, by spectrum aggregation, It is used as a frequency band of 100 MHz (logically, one frequency band). In this case, the mobile station 300 actually uses a 20 MHz wide band belonging to the 2 GHz band and a continuous 80 MHz wide band belonging to the 3.5 GHz band. Further, as shown in FIG. 4, CC #1 may be formed by collecting a plurality of bands having a frequency width smaller than 20 MHz which is a 2 GHz band.

Figure 7 is a diagram showing the relationship between a mobile station and a component carrier. The mobile station 400, as previously described, is an LTE mobile station. Therefore, the mobile station 400 does not apply carrier aggregation or spectrum aggregation, and uses any of CC #1 to #5 to receive and transmit data. That is, a frequency band of up to 20 MHz wide is used.

On the other hand, the mobile station 300 is an LTE-A mobile station. Therefore, since the mobile station 300 applies carrier aggregation or spectrum aggregation, data can be received and transmitted using the complex CCs among CC #1 to #5. That is, data transmission (uplink communication) can be performed using a frequency band of 20 MHz wide or 40 MHz wide. Further, reception of data in a frequency band of 20 MHz wide, 40 MHz wide, 60 MHz wide, 80 MHz wide, or 100 MHz wide (down link communication) can be performed.

However, in order to identify CC #1 to #5 in the cell under the control, the base station 100 and the relay station 200 assign an ID to each CC. As the allocation method of the ID, for example, the following method can be considered,

1) Method for assigning cell IDs to each CC

In a general LTE system, one cell ID is assigned to each cell. In this regard, it is desirable to assign 5 cell IDs to each cell. Next, each CC can be identified by making five cell IDs correspond to CC #1~#5.

2) Method for allocating expanded cell IDs for each CC

In a general LTE system, 504 cell IDs are prepared, and the mobile station uses cell IDs to identify peripheral cells, respectively. If the cell is assigned five cell IDs, the design of the mobile communication system, the exhaustion of the cell ID sometimes becomes a problem. In this case, more expanded cell IDs than the total number of cell IDs defined in LTE can be defined, and 5 expanded cell IDs are assigned to each cell. Next, each of the CCs can be identified by making the five expanded cell IDs correspond to CC #1 to #5.

3) Method for assigning unique numbers in cells to each CC

Assign a unique number in the cell to CC # 1~# 5 as the CC number. For example, for each cell, "1" is given to CC #1, "2" is given to CC #2, "3" is given to CC #3, "4" is given to CC #4, and CC is given to CC #4. 5 Give the number of "5". Further, the cell number may be at least unique within the cell, and the CC of the plurality of cells may be given a serial number. For example, the CC of the plurality of cells managed by the same base station or the relay station may be given a serial number.

Fig. 8 is a view showing a first example of allocation of component carrier identification information. In the example of Fig. 8, the first or second method described above is employed. For the CC # 1~# 5 of the first cell managed by the base station 100, the cell ID (or expanded cell ID) "1" to "5" is assigned. For CC # 1~# 5 of the second cell, assign the cell ID (or expanded cell ID) "6" to "10". For CC # 1~# 5 of the third cell, assign the cell ID (or expanded cell ID) "11" to "15". Further, for CC #1 to #5 of the cells managed by the relay station 200, the cell ID (or expanded cell ID) "16" to "20" is assigned.

Fig. 9 is a view showing a second example of allocation of component carrier identification information. 9th In the example of the figure, the method of the third method described above is adopted. For the CC # 1~# 5 of the first cell managed by the base station 100, the cell number (CC number, CC-ID) "1" to "5" is assigned. For CC # 1~# 5 of the second cell, the cell number "6" to "10" is assigned. For CC # 1~# 5 of the third cell, the cell numbers "11" to "15" are assigned. Further, the cell numbers "1" to "5" are assigned to CC #1 to #5 of the cells managed by the relay station 200.

Fig. 10 is a view showing an example of the structure of a radio frame. In each of CC #1 to #5, the radio frame shown in Fig. 10 is transmitted/received between the base station 100 and the mobile stations 300, 400, and between the relay station 200 and the mobile stations 300, 400. However, the structure shown in FIG. 10 is only an example, and the structure of the radio frame is not limited thereto.

In this example, the radio frame in the 10ms period includes 10 1ms wide sub-frames (sub-frames #0~#9). Each sub-frame contains two 0.5ms wide trenches. That is, the radio frame in the 10ms period includes 20 slots (grooves #0~#19).

In the DL radio frame, the primary synchronization channel (P-SCH) and the secondary synchronization channel (S-SCH) for transmitting the synchronization signal are allocated to the slots #0 and #10. Further, in the slot #1, in order to transmit the notification information (notification), a physical broadcast channel (PBCH) and an extended physical broadcast channel (E-PBCH) are allocated.

The wireless resources in the wireless frame are managed by being subdivided into time and frequency directions. Use orthogonal frequency division multiplexing access in DL frames (Orthogonal Frequency Division Multiple Access (OFDMA), and Single-Carrier Frequency Division Multiple Access (OFDMA) is used in the UL frame. Wireless messages in the time x frequency area are allocated in various channels.

Regarding the time direction, the groove contains 7 or 6 symbols. The symbol insertion has an interval signal called a Cyclic Prefix (CP). In the CP, there are two CPs of different lengths, called a general CP and an extended CP. In the case of a general CP, there are seven symbols in one groove, and in the case of expanding the CP, six symbols are included in one groove. Regarding the frequency direction, the CC includes a plurality of subcarriers.

Fig. 11 is a view showing an example of the first allocation of the extended entity notification channel. In the longitudinal direction of Fig. 11, the time axis is the time axis, and the horizontal direction is the frequency axis. Further, in the example of Fig. 11, the case where the general CP is used as the CP, that is, the case where the one groove includes seven symbols is displayed.

In the DL frame, the physical control format indicator channel (PCFICH) and the physical hybrid automatic repeat request indicator channel (Physical Hybrid automatic repeat request indicator channel) are assigned to the first symbol of the slot #0. PCFICH). The PCIFH is a channel for notifying the number of symbols allocated by the physical downlink control channel (PDCCH) of the entity. PHICH is a channel for feeding back ACK (ACKnowledgement) or NACK (Negative ACKnowledgement) for data reception. PHICH is sometimes assigned to the 3rd symbol.

Further, the PDCCH described above is allocated to the first symbol of the slot #0. The PDCCH is a channel for transmitting control information of L1/L2 (Layer1/Layer2). The PDCCH is also assigned to the second symbol and the third symbol, and the number of symbols of the PDCCH is between 1 and 3 and is variable.

Further, the sixth symbol of the slot #0 is assigned with the aforementioned S-SCH, and the seventh symbol is assigned with the aforementioned P-SCH. The P-SCH is a channel in which any one of a predetermined number (for example, three) of the main synchronizing signal series is transmitted. The S-SCH is a channel in which any one of the predetermined number (for example, 168) of the secondary synchronization signals is transmitted. The combination of the P-SCH series and the S-SCH series (for example, a combination of 3 x 168 = 504 channels) corresponds to the cell ID.

As a method of assigning the ID of the CC, the first method described above is adopted, that is, when CC # 1 to # 5 are assigned mutually different cell IDs, the P-SCH series and the S-SCH series are different depending on the CC. . Further, as described above, P-SCH and S-SCH are also allocated in the groove #10. However, the P-SCH series transmitted in the trench #10 is the same as the one in the trench #0, but the S-SCH series transmitted in the trench #10 is different from the one in the trench #0.

Further, the aforementioned PBCH is assigned to the first to fourth symbols of the groove #1, and the aforementioned E-PBCH is assigned to the fifth to seventh symbols. On the wireless message area, the E-PBCH is adjacent to the PBCH in the time direction. PBCH is a notification channel defined by LTE and LTE-A. E-PBCH is a notification channel added to LTE-A. That is, the mobile station 300 of the LTE-A mobile station can detect both the PBCH and the E-PBCH. On the other hand, the mobile station 400 of the LTE mobile station can detect the PBCH but cannot detect the E-PBCH.

The notification information transmitted in the PBCH includes information of the CCs set by the mobile stations 300 and 400 in order to connect to the PBCH. For example, in the PBCH The information includes the display bandwidth (for example, 5MHz, 10MHz, 15MHz, 20MHz, etc.), because the LTE and LTE-A frequency bandwidth is variable.

The notification information (extension notification information) sent in the E-PBCH includes information on setting the CC of the plural. For example, in order to make scheduling easy, considering the base station 100 or the relay station 200, it is possible to connect the CC of the LTE mobile station and the CC of the LTE-A mobile station. In this case, it is considered that the information indicating the correspondence between the CC #1~#5 and the type of the mobile station is included in the extension notification information transmission. Thereby, the mobile station 300 of the LTE-A mobile station can know that the allowed CC can be connected before the base station 100 or the relay station 200, and the connection processing can be made more efficient.

As a method of displaying the correspondence relationship between CC #1 to #5 and the type of the mobile station, a method of designating a CC that can connect to the LTE-A mobile station, and a method of designating a CC that cannot connect to the LTE-A mobile station can be specified, and a method can be specified. A method of connecting a CC of an LTE mobile station, a method of not being able to connect to a CC of an LTE mobile station, or the like is specified. In order to expand the notification information, in order to display the CC, the ID given to each CC can be used. However, the extension notification information does not limit the information showing the correspondence between CC #1~# 5 and the type of the mobile station, and other information may also be included.

As shown in FIG. 11, the S-SCH, the P-SCH, the PBCH, and the E-PBCH are not allocated to one CC (subcarrier) as a whole, but may be allocated only to a part of the frequencies (subcarriers). Such as the frequency assigned to the center of the CC. It is not near the CC realm but is assigned to frequencies near the center of the CC in order to make channel detection by the mobile stations 300, 400 easier. The frequency assigned to the E-PBCH may be the same as or different from the frequency assigned to the PBCH. Also.

In addition, the DL frame transmits a reference signal (RS) of the known pilot signal by using one of the resources other than the radio resource for the channel. The mobile stations 300 and 400 can measure the received power or reception quality using the reference signal.

Fig. 12 is a view showing a second allocation example of the extended entity notification channel. The assignment example of Fig. 12 is the same as the example shown in Fig. 11 except for the setting position of the E-PBCH. In the example of Fig. 12, E-PBCH is assigned to the fourth to fifth symbols of the groove #0. On the radio resource area, the E-PBCH is adjacent to the S-SCH in the time direction. The frequency assigned to the E-PBCH may be the same as or different from the frequency assigned to the S-SCH.

Figure 13 is a diagram showing a third allocation example of the extended entity notification channel. The assignment example of Fig. 13 is the same as the example shown in Figs. 11 and 12 except for the setting position of E-PBCH. In the example of Fig. 13, E-PBCH is assigned to both the fourth to fifth symbols of the groove #0 and the fifth to seventh symbols of the groove #1. In the radio resource area, the E-PBCH is adjacent to the S-SCH and the PBCH in the time direction. The frequency assigned to the E-PBCH may be the same as or different from the frequency assigned to the S-SCH and the PBCH.

Thus, by increasing the amount of radio resources allocated to the E-PBCH, more extended notification information can be sent. The radio resources allocated to the E-PBCH may also be made variable in response to the amount of information to be transmitted. Further, as shown in FIGS. 11 to 13, it is easier to detect the E-PBCH by the mobile station 300 by causing the E-PBCH to be adjacent to at least one of the synchronization channel and the PBCH in the time direction. However, it can also be set to be adjacent to the frequency direction, not the time. direction. Further, the E-PBCH may be set not to be adjacent to either the synchronization channel or the PBCH, and the 14th figure is a diagram showing the fourth allocation example of the extended entity notification channel. The assignment example of Fig. 14 is the same as the example shown in Figs. 11 to 13 except for the setting position of the E-PBCH. In the example of Fig. 14, the E-PBCH is assigned to the seventh symbol of the groove #1. On the radio resource area, the E-PBCH is not adjacent to the PBCH. The frequency assigned to the E-PBCH may be the same as or different from the frequency assigned to the PBCH.

Fig. 15 is a view showing a fifth allocation example of the extended entity notification channel. The assignment example of Fig. 15 is the same as the example shown in Figs. 11 to 14 except for the setting position of the E-PBCH. In the example of Fig. 15, the E-PBCH is assigned to the fourth symbol of the groove #0. On the radio resource area, the E-PBCH is not adjacent to the S-SCH. The frequency assigned to the E-PBCH may be the same as or different from the frequency of the S-SCH.

Figure 16 is a diagram showing a sixth allocation example of the extended entity notification channel. The assignment example of Fig. 16 is the same as the example shown in Figs. 11 to 15 except for the setting position of the E-PBCH. In the example of Fig. 16, the E-PBCH is assigned to the sixth symbol of the groove #1. On the radio resource area, the E-PBCH is not adjacent to the PBCH. The frequency assigned to the E-PBCH may be the same as or different from the frequency assigned to the PBCH.

In the above, from the 11th to the 16th, the case where the general CP is used as the CP (1 case where the groove includes 7 symbols) is taken as an example, but the case where the CP is expanded as the CP is used (1 groove includes 6) In the case of a symbol, the E-PBCH can also be set in the same way. In this case, for example, the method in Figure 11 is tied to the ditch. The fifth to sixth symbols of slot #1, the method in Fig. 12 is the fourth symbol of the groove #0, and the method in Fig. 13 is the fourth symbol of the groove #0 and the groove #1 In the fifth to sixth symbols, the method in Fig. 14 assigns an E-PBCH to the sixth symbol of the groove #1.

Figure 17 is a block diagram showing the base station. The base station 100 includes an antenna 111 for receiving and transmitting, a radio receiving unit 112, a demodulation and decoding unit 113, a quality information extracting unit 114, a program processor 115, an RA control signal extracting unit 116, an RA control unit 117, and an RA control signal generating unit. 118. The notification information generating unit 119, the extended notification information generating unit 120, the control information generating unit 121, the synchronization signal generating unit 122, the RS generating unit 123, the mapping unit 124, the encoding and transforming unit 125, and the wireless transmitting unit 126.

The transmitting and receiving antenna 111 receives the wireless signals transmitted by the relay station 200 and the mobile stations 300 and 400, and outputs the wireless signals to the wireless receiving unit 112. Further, the transmitting and receiving antenna 111 wirelessly outputs the transmission signal obtained from the wireless transmitting unit 126. Further, the transmitting antenna and the receiving antenna may be separately provided in the base station 100, not only for transmitting and receiving the antenna. Further, diversity transmission and reception antennas can also be used for diversity transmission.

The wireless receiving unit 112 performs wireless signal processing on the signal obtained from the transmitting and receiving antenna 111, and performs signal conversion (down convert) from the high frequency wireless signal to the low frequency baseband. The wireless receiving unit 112 is configured to have a low noise amplifier (LNA), a frequency converter, a band pass filter, and an analog to digital (A/A) for processing a wireless signal. D) Converters, etc. The frequency band of the receiving object is indicated by the programmer 115.

The demodulation and decoding unit 113 decodes the baseband signal obtained from the wireless receiving unit 112, polyphony correction, and error correction, and outputs the obtained data (including user data and control information). The polyphonation and decoding are performed in accordance with a predetermined Modulation and Coding Scheme (MCS) or a modulation coding method indicated by the program machine 115. The modulation mode candidate includes a digital modulation method such as Quadrature Phase Shift Keying (QPSK) or 16 Quadrature Amplitude Modulation (QAM). The coding mode candidates include Turbo codes or Low Density Parity Check (LDPC) codes. The extracted user data is converted into a packet form and transferred to the upper network.

The quality information extracting unit 114 is a control report transmitted by the mobile stations 300 and 400, and can extract a wireless quality measurement report (Measurement Report). Further, the quality information extracting unit 114 outputs the extracted measurement report to the program machine 115.

The program machine 115 allocates radio resources to the mobile stations 300 and 400 based on the measurement report acquired from the quality information extracting unit 114. Further, the radio resource allocation unit 112, the demodulation and decoding unit 113, the RA control signal generation unit 118, the code modulation unit 125, and the radio transmission unit 126 are notified of the radio resource allocation status. Further, the programmer 115 appropriately selects the modulation coding method based on the measurement report. Then, the demodulation decoding unit 113 and the code modulation unit 125 are notified of the selected modulation coding method.

The RA control signal extracting unit 116 extracts the control signal transmitted to the base station 100 when the mobile stations 300 and 400 are randomly accessed (RA). Random storage In the case where the mobile stations 300 and 400 are connected to the base station 100, the procedure is performed between the two. The control signal extracted by the RA control signal extracting unit 116 includes a random access preamble signal or a physical entity transmitted by a physical random access channel (PRACH) disposed in the UL radio frame. The program broadcast signal sent by the shared channel Physical Uplink Shared Channel, PUSCH).

The RA control unit 117 controls the random access based on the control signal extracted by the RA control signal extracting unit 116. Specifically, when the random access preamble signal is detected, the RA control unit 117 determines whether the CC used for the transmission of the signal corresponds to the type of the mobile station of the transmission source (LTE mobile station or LTE-A). Mobile station), and decide whether it can be accepted. Then, the RA control signal generation unit 118 is notified of the determination result. Further, when the program broadcast signal is correctly detected, the RA control unit 117 notifies the RA control signal generation unit 118 of the intention.

The RA control signal generation unit 118 generates a control signal transmitted to the mobile stations 300 and 400 at the time of random access based on the notification from the program machine 115 and the RA control unit 117. Specifically, the RA control signal generating unit 118 generates a response signal indicating whether or not random access is acceptable as a response to the random access preamble signal. Also, as a response to the program broadcast signal, a contention resolution signal is generated.

The notification information generating unit 119 generates notification information that is transmitted (notified) in the PBCH every CC. The information is hereby informed, including information showing the bandwidth of the CC, and the like. The extended notification information generating unit 120 generates the extended notification information that is transmitted (notified) in the E-PBCH. Informed extension information, including display CC # 1~# 5 corresponds to the type of mobile station. The system information generating unit 121 generates control information for transmitting L1/L2 on the PDCCH. The control information includes information indicating the allocation result of the UL radio resource or the modulation coding method to be applied. The synchronization signal generation unit 122 generates a P-SCH series and an S-SCH series every CC. The RS generating unit 123 generates a reference signal of the known signal.

The mapping unit 124 is a user data received from the upper network, the RA control signal generation unit 118, the notification information generation unit 119, the extended notification information generation unit 120, the control information generation unit 121, the synchronization signal generation unit 122, and the RS. The control information/control signal generated by the generating unit 123 is mapped to the DL radio frame. Further, the mapped data is sequentially output to the code modulation unit 125.

The code modulation unit 125 corrects the error correction and transposition of the data obtained from the mapping unit 124, generates a baseband signal as a transmission signal, and outputs the signal to the wireless transmission unit 126. The coding and modulation are performed using a predetermined modulation coding method or a modulation coding method indicated by the program machine 115. The candidate for the modulation method includes a digital modulation method such as QPSK or 16QAM. The candidate for the coding method includes a turbo code or an LDPC code.

The wireless transmitting unit 126 performs wireless signal processing on the transmission signal obtained from the code modulation unit 125, and performs conversion (up-conversion) of the low-frequency baseband signal to the high-frequency wireless signal. The wireless transmitting unit 126 is provided with, for example, a digital to analog (D/A) converter, a frequency converter, a band pass filter, a power amplifier, and the like for wireless signal processing. The frequency band of the transmission object is indicated by the programmer 115.

Figure 18 is a block diagram showing the relay station. Relay station 200 The transmitting antennas 211 and 228, the radio receiving unit 212, the demodulation and decoding unit 213, the quality information extracting unit 214, the program processor 215, the RA control signal extracting unit 216, the RA control unit 217, the RA control signal generating unit 218, and the notification information generation The unit 219, the extension notification information generation unit 220, the control information generation unit 221, the synchronization signal generation unit 222, the RS generation unit 223, the mapping unit 224, the code modulation unit 225, the wireless transmission unit 226, and the base station side communication unit 227.

The module from the transmitting and receiving antenna 211 to the wireless transmitting unit 226 performs the same processing as the module of the same name on the base station 100 as shown in Fig. 18. These modules perform wireless communication processing between the relay station 200 and the mobile stations 300, 400.

The base station side communication unit 227 performs wireless communication processing between the relay station 200 and the base station 100. The base station side communication unit 227 performs correction error coding, modulation, and up-conversion on the user data (transmission data of the mobile stations 300 and 400) acquired from the demodulation decoding unit 213, and outputs the obtained transmission signal to the obtained transmission signal. The transmitting antenna 228 is received. Further, the base station side communication unit 227 outputs the extracted wireless data, low-inversion frequency conversion, demodulation, and error correction from the transmission/reception antenna 228, and outputs the extracted user data (the transmission data of the base station 100) to Mapping unit 224.

The transmitting and receiving antenna 228 receives the wireless signal transmitted from the base station 100 and outputs it to the base station side communication unit 227. Further, the transmitting and receiving antenna 228 wirelessly outputs the transmission signal obtained from the base station side communication unit 227. Further, instead of separately providing the transmitting and receiving antenna 211 and the transmitting and receiving antenna 228, a transmitting and receiving antenna for wirelessly communicating the base station 100 and the mobile stations 300 and 400 in parallel may be provided.

Figure 19 is a block diagram showing the mobile station. The mobile station 300 includes a transmission/reception antenna 311, a radio reception unit 312, a demodulation decoding unit 313, a control information extraction unit 314, a notification information extraction unit 315, an extension notification information extraction unit 316, a synchronization signal extraction unit 317, and a synchronization control unit. 318. The terminal control unit 319, the RS extraction unit 320, the quality measurement unit 321, the quality information generation unit 322, the received power measurement unit 323, the cell selection unit 324, the RA control signal extraction unit 325, the RA control unit 326, and the RA control signal generation. The unit 327, the code modulation unit 328, and the wireless transmission unit 329.

The transmitting and receiving antenna 311 receives the wireless signals transmitted from the base station 100 and the relay station 200, and outputs them to the wireless receiving unit 312. Further, the transmitting and receiving antenna 311 wirelessly outputs the transmission signal obtained from the wireless transmitting unit 329. Further, the transmitting antenna and the receiving antenna may be separately provided to the mobile station 300 instead of the antenna for both transmission and reception. Further, diversity transmission may be performed using a plurality of transmission and reception antennas.

The wireless receiving unit 312 performs wireless signal processing on the signal obtained from the transmitting and receiving antenna 311, and performs signal conversion (low-direction frequency conversion) from a high-frequency wireless signal to a low-frequency baseband. The wireless receiving unit 312 is provided with, for example, a low noise amplifier, a frequency converter, a band pass filter, an analog digital (A/D) converter, and the like for processing the wireless signal. The frequency band of the reception target is instructed by the terminal control unit 319.

The demodulation and decoding unit 313 performs complex adjustment and error correction decoding on the baseband signal obtained from the wireless reception unit 312, and outputs the obtained data (including user data and control information). The polyphony and decoding are performed according to a predetermined transposition coding method or a transposition coding method indicated by the terminal control unit 319. get on.

The control information extracting unit 314 extracts the control information for transmitting the L1/L2 on the PDCCH by the base station 100 or the relay station 200. The control information includes information indicating that the allocation of the UL radio resource or the display of the transposition coding method is applied. Further, the control information extracting unit 314 outputs the extracted control information to the terminal control unit 319.

The notification information extracting unit 315 causes the base station 100 or the relay station 200 to extract the notification information notified to the PDCCH for every CC. The information is hereby included, including information indicating the bandwidth of the CC to which the notification information is transmitted. The notification information extracting unit 315 outputs the extracted control information to the terminal control unit 319.

The extension notification information extracting unit 316 extracts the base station 100 or the relay station 200 to inform the extension information notified by the E-PBCH. The E-PBCH is set in at least one CC. In this extended information, there is information showing the correspondence between CC # 1~# 5 and the type of mobile station. The extended notification information extracting unit 316 outputs the extracted extended notification information to the synchronization control unit 318, the terminal control unit 319, the quality measuring unit 321, the received power measuring unit 323, and the cell selecting unit 324.

The synchronization signal extracting unit 317 extracts the synchronization signals (primary synchronization signals and secondary synchronization signals) transmitted by the base station 100 or the relay station 200 on the P-SCH and the S-SCH by the respective CCs. Further, the synchronizing signal extracting unit 317 outputs the synchronizing signal to the synchronizing control unit 318 and the synchronizing control unit 318, and detects the timing of the radio frame of the 10 ms period based on the synchronizing signal extracted by the synchronizing signal extracting unit 317. Again, detection The timing of the trenches in the 0.5ms period. Then, the timing of the detected radio frame or the groove is notified to the radio reception unit 312, the demodulation decoding unit 313, the RS extraction unit 320, the code modulation unit 328, and the radio transmission unit 329, and fed back to the synchronization signal extraction. Part 317. Further, the synchronization control unit 318 specifies the P-SCH series and the S-SCH series used by the base station 100 or the relay station 200, and combines the specific cell IDs from the combination of the two. Further, the cell selection unit 324 is notified of the specific cell ID.

The terminal control unit 319 refers to the extension notification information extracted by the extension notification information extracting unit 316, and determines the CC that can be used by the LTE-A mobile station. Further, the access to the base station 100 or the relay station 200 is controlled by referring to the notification information extracted by the information extracting unit 315. Further, with reference to the control information extracted by the control information extracting unit 314, the radio resource allocated to the mobile station 300 is judged, and the applicable modulation coding method is determined. Further, the terminal control unit 319 controls operations of the radio reception unit 312, the demodulation decoding unit 313, the code modulation unit 328, and the radio transmission unit 329.

The RS extracting unit 320 extracts the reference signal transmitted from the base station 100 or the relay station 200 based on the timing of the radio frame or the slot detected by the synchronization control unit 318. Then, the extracted reference signal is output to the quality measuring unit 321 and the received power measuring unit 323.

The quality measuring unit 321 displays the information by expanding the notification information, and measures the reception quality of the CC that can be used by the LTE-A mobile station using the reference signal extracted by the RS extraction unit 320. However, the reception quality of the CC that cannot be used by the LTE-A mobile station may not be measured. Further, the quality measuring unit 321 notifies the quality information generating unit 322 of the measurement result. In addition, the quality measurement department The camera returns the measurement result to the RS extraction unit 320. As an indicator of the reception quality, for example, Signal to Interference and Noise Ratio (SINR) can be used.

The quality information generating unit 322 generates control information (measurement report) for displaying the reception quality measured by the quality measuring unit 321. As the measurement report, for example, a channel quality indicator (CQI) indicating the reception quality as a discrete value can be used.

The received power measuring unit 323 measures the received power (receiving electric power intensity) of each of CC #1 to #5 using the reference signal extracted by the RS extracting unit 320. At the time of measurement, the CC that is available to the LTE-A mobile station is specified by the extension notification information extracted by the notification information extracting unit 316, and the received power of the CC that cannot be used by the LTE-A mobile station may not be used. Determination. Further, the received power measurement unit 323 notifies the cell selection unit 324 of the measurement result.

The cell selection unit 324 selects the cell to be connected to the mobile station 300 based on the cell ID of the surrounding cell specified by the synchronization control unit 318 and the received power measured by the received power measurement unit 323. Ideally, the cells that receive the most power are selected. Further, based on the extension notification information extracted by the extension notification information extracting unit 316 and the received power of each CC, the CC for random access is selected. Ideally, the largest amount of received power among the connectable CCs is selected. Further, the cell selection unit 324 notifies the RA control unit 326 of the cell at the connection end and the CC to be used.

The RA control signal extracting unit 325 extracts the control signal transmitted by the base station 100 or the relay station 200 on the PDSCH at the time of random access. Control here The signal number includes a random access response signal or a competition resolution signal. Further, the RA control signal extracting unit 325 outputs the extracted control signal to the RA control unit 326.

When the cell from the connection end of the cell selection unit 324 and the CC to be used are notified, the RA control unit 326 uses the notified CC to instruct the RA control signal generation unit 327 to transmit the random access preamble signal, and instructs The RA control signal extracting unit 325 is enabled to extract the control signal for the response. When the RA control unit 325 extracts the random access response signal from the RA control signal extracting unit 325, the RA control unit 326 instructs the RA control signal generating unit 327 to enable the progress transmission signal to be transmitted.

The RA control signal generation unit 327 generates a random access preamble signal transmitted by the PRACH in accordance with an instruction from the RA control unit 326. Further, the RA control signal generation unit 327 generates a progress transmission signal transmitted on the PUSCH in accordance with an instruction from the RA control unit 326.

The code modulation unit 328 modulates the user data transmitted to the base station 100 or the relay station 200, the measurement report generated by the quality information generating unit 322, and the control signal error correction code generated by the RA control signal generating unit 327. And mapped to the UL radio resource assigned to the mobile station 300. The coding and modulation are performed using a predetermined modulation coding method or a modulation coding method indicated by the terminal control unit 319. Further, the baseband signal is output as a transmission signal to the wireless transmission unit 329.

The wireless transmitting unit 329 performs wireless signal processing on the transmission signal obtained from the code modulation unit 328, and performs conversion (upconversion) from the low frequency baseband signal to the high frequency wireless signal. The wireless transmitting unit 329 is provided with, for example, a digital analog (D/A) converter and frequency change for processing wireless signals. Converters, bandpass filters, power amplifiers, etc. The frequency band of the transmission target is instructed by the terminal control unit 319.

Fig. 20 is a sequence diagram showing a first connection example from the mobile station to the base station. This sequence is shown as a case where the mobile station 300 of the LTE-A mobile station is connected to the base station 100. The same procedure is also applied to the case where the mobile station 300 is connected to the base station 200.

(Step S11) The base station 100 transmits the synchronization signal by the P-SCH and the S-SCH of each of CC #1 to #5. When the ID of CC #1~#5 is used as the cell ID, a different synchronization signal is transmitted every CC. Further, when the base station 100 manages a plurality of cells, a synchronization signal is transmitted to each cell. Similarly, the relay station 200 also transmits a synchronization signal.

(Step S12) The mobile station 300 synchronizes with the base station 100 based on the synchronization signal transmitted by the base station 100 and detects the timing of the radio frame of each cell. When the timings of the CC frames of CC #1~# 5 are the same, it is not necessary to perform timing detection for all CCs. Similarly, the mobile station 300 acquires synchronization with the relay station 200.

(Step S13) The base station 100 transmits the reference signals of the pilot signals by CC #1~#5 respectively. The reference signals sent by CC # 1~# 5 may all be the same signal. Similarly, the relay station 200 also transmits a reference signal.

(Step S14) The mobile station 300 measures the received power from the base station 100 for each cell based on the reference transmitted by the base station 100. The received power can also be measured for any of the CCs, or for a plurality of CCs. In the former case, the frequency band to be measured may be determined in advance. In the latter case, the maximum or average value of the received power of the complex CC can also be defined as the base. The ground station 100 receives power. Similarly, the mobile station 300 measures the received power from the relay station 200.

(Step S15) The mobile station 300 selects the cell to which the mobile station 300 is to be connected based on the received power measured in step S14. Ideally, the mobile station 300 will select the cell that receives the most power. Here, cells under the genus of the base station 100 are selected.

(Step S16) The base station 100 transmits (notifies) the notification information by the individual PBCHs of CC #1~#5. Further, the extension notification information is transmitted (notified) by at least one E-PBCH set in CC #1 to #5.

(Step S17) The mobile station 300 confirms the CC that can be connected to the LTE-A mobile station among the CC #1 to #5 based on the transmission notification information transmitted (notified) by the base station 100.

(Step S18) The mobile station 300 selects a CC to be used for random access from the CC that has been confirmed to be usable by the LTE-A mobile station in step S17. When there are a plurality of candidates for the CC, any one of them may be selected, or the maximum received power may be selected.

Further, in the example of the sequence of Fig. 20, although the CC to be used is selected after selecting the cells to be connected, the cells and the CC can be simultaneously selected. For example, it is not limited to one cell, and the received power of the CC of all the surrounding cells detected is measured, and among these CCs, a CC in which the LTE-A mobile station may be connected and receives a large power may be selected. Further, before the cells are selected, the CCs to which the LTE-A mobile station may be connected are confirmed for the surrounding cells, and the received power of the CCs is measured, and the CC having the large received power may be selected.

(Step S19) The mobile station 300 is included to correspond to the S18 The information selected in the step is to confirm the information to be connected to its CC (for example, information showing the bandwidth). Further, the random access preamble is transmitted to the base station 100 at the PRACH of the radio frame set in the selected CC.

(Step S20) The base station 100 allows the mobile station to receive the random access preamble CC to be a CC to which the LTE-A mobile station may connect, and if there is enough space to accommodate the radio resources of the mobile station 300, the mobile station is allowed to move. The connection of the station 300. When the connection is allowed, the base station 100 transmits a random access response indicating the allowed connection with the PDSCH of the DL radio frame set in the CC receiving the random access preamble. At this time, the base station 100 allocates the UL radio resource for the step S21 to the mobile station 300.

(Step S21) The mobile station 300 broadcasts the progress of the predetermined message to the base station 100 in order to confirm whether the communication can be normally performed, and the UL radio resource (PUSCH) allocated in the step S20.

(Step S22) The base station 100 is to confirm whether or not the progress broadcast is normally received. Moreover, as a response message, a contention resolution indicating whether or not reception is possible is transmitted to the mobile station 300 on the PDSCH.

In this way, the mobile station 300 of the LTE-A mobile station can confirm the CC that can be used by the LTE-A mobile station before random access by referring to the extension notification information by receiving. Therefore, the connection of the CC that the LTE-A mobile station cannot use is not attempted, and the procedure of wasting random access can be suppressed. Further, since the CC that can be used by the LTE-A mobile station can be confirmed in advance, the CC of the received power can be measured and determined. Therefore, the load of the processing of the mobile station 300 can be alleviated.

On the other hand, the mobile station 400 of the LTE mobile station cannot refer to the extension notification information. Therefore, even if the base station 100 or the relay station 200 restricts LTE mobile In the case of a CC that can be used by the station, it is not possible to confirm whether any of the CCs is a CC that can be used by the LTE mobile station before random access. Therefore, random access failures occur.

Fig. 21 is a sequence diagram showing a second connection example from the mobile station to the base station. This sequence is shown as a case where the mobile station 400 of the LTE mobile station is connected to the base station 100. The case where the mobile station 400 is connected to the relay station 200 is also performed in the same order.

(Step S31) The base station 100 transmits the synchronization signal by the P-SCH and the S-SCH of CC #1 to #5, respectively. In the case where the base station 100 manages a plurality of cells, a synchronization signal is transmitted for each cell. Similarly, the relay station 200 also transmits a synchronization signal.

(Step S32) The mobile station 400 detects the timing of the radio frame for each cell based on the synchronization signal transmitted from the base station 100, and synchronizes with the base station 100. When the cell ID is used as the ID of the CC, the mobile station 400 may recognize that CC #1 to #5 (virtual) are different from each other. Similarly, the mobile station 400 acquires synchronization with the relay station 200.

(Step S33) The base station 100 transmits the reference signals of the pilot signals by CC #1~#5. Similarly, the relay station 200 also transmits a reference signal.

(Step S34) The mobile station 400 measures the received power from the base station 100 for each cell and each CC based on the reference transmitted by the base station 100. Similarly, the mobile station 300 measures the received power from the relay station 200.

(Step S35) The mobile station 400 selects a cell to be connected to the mobile station 400 based on the received power measured in the step S34. Ideally, moving Station 400 will choose to receive the cells with the most power. Here, the cells selected under the genus of the base station 100 are selected.

(Step S36) The base station 100 transmits (informs) the notification information by the individual PBCHs of CC #1~#5.

(Step S37) The mobile station 400 selects any one of CC, CC #1~#5 for random access from CC #1~#5 of the cell selected in step S35. You can also choose to receive the largest one. Further, when the mobile station 400 recognizes CC #1 to #5 (virtually) as cells different from each other, it is conceivable to perform cell selection and CC selection based on the received power of each CC.

(Step S38) The mobile station 300 confirms a message included in the notification information corresponding to the CC selected in the step S37, and is used to connect to the CC (for example, information showing the bandwidth). Further, the random access preamble is transmitted to the base station 100 by the PRACH of the UL radio communication frame provided in the selected CC. However, here, the selected CC is a CC that cannot connect to LTE.

(Step S39) The base station 100 rejects the connection of the mobile station 400 when the CC to which the random access preamble is received is not a CC to which the LTE mobile station can connect. When the connection is rejected, the base station 100 transmits a random access response indicating that the connection is rejected by the PDSCH of the DL radio frame set in the CC of the random access preamble. Also, the base station 100 does not respond to the random access preamble.

(Step S40) The mobile station 400 receives the random access response indicating that the connection is rejected, or sends a random access response and does not receive the specified time. When answering, it is judged that random access is a failure. Accordingly, the mobile station 400 selects the CC other than the cell selected in the step S35.

(Step S41) The mobile station 400 confirms a message including the notification information corresponding to the CC selected in the step S40, and is used to connect to the CC. Further, the random access preamble is transmitted to the base station 100 by the PRACH of the UL radio communication frame provided in the selected CC. Here, the selected CC is a CC that can be connected to LTE.

(Step S42) The base station 100 allows the mobile station 400 when the CC receiving the random access preamble is a CC connectable by the LTE mobile station and has a space sufficient to accommodate the radio resources of the mobile station 400. Link. When the connection is allowed, the base station 100 transmits a display permission connection random access response by using the PDSCH of the DL radio communication box provided in the CC that receives the random access preamble. At this time, the base station 100 allocates the UL radio resource for the step S43 to the mobile station 400.

(Step S43) The mobile station 400 transmits the progress transmission to the base station 100 in order to confirm whether or not the communication can be performed normally, in the UL radio resource (PUSCH) allocated in the step S42.

(Step S44) The base station 100 confirms whether or not the progress transmission is normally received. Next, as a response message, the contention resolution indicating whether or not reception is possible is transmitted to the LTE mobile station 400 on the PDSCH.

As described above, since the mobile station 400 of the LTE mobile station cannot refer to the extension notification information, the CC that can be used by the LTE mobile station cannot be confirmed before the random access. Therefore, random access has the possibility of failure. Moreover, since the CC that can be used by the LTE mobile station cannot be confirmed, it cannot be determined in advance. Receive CC of power.

Next, explain the relationship between CC # 1~# 5 and E-PBCH.

Fig. 22 is a view showing an example of the first transmission and reception of the extension notification information. In the example of Fig. 22, the base station 100 or the relay station 200 controls to use CC #1~#3 for the LTE mobile station and #4~#5 for the LTE-A mobile station.

Further, the base station 100 or the relay station 200 is provided with PBCH and E-PBCH in all of CC #1 to #5. The PBCH at each CC will send a notification message containing the information used to connect the CC. The information to be sent on the PBCH may be different depending on the CC. The extension notification information including the information showing the relationship between CC #1 to #5 and the type of the mobile station is transmitted to each E-PBCH. The extension notification information sent by E-PBCH can also be the same in all CCs.

In this case, the terminal 300 of the LTE-A mobile station receives the extension notification information transmitted by the E-PBCH of any of CC #1 to #5. From the received extension notification information, it is known that #4, #5 are CCs that can be used in the LTE-A mobile station. Moreover, one of #4, #5 can be selected as the CC for random access. Which of #4 and #5 should be selected can be judged based on the received power measurement result. In the example of Fig. 22, the mobile station 300 selects CC #4 with reference to the extension notification information notified by CC #4.

When CC #4 is selected as the CC for random access, the mobile station 300 refers to the notification information transmitted by the PBCH of CC #4, and transmits the random storage with the PRACH of the UL radio frame set in CC #4. Take the preamble. Thereby, the procedure of random access between the base station 100 or the relay station 200 and the mobile station 300 can be started. Thus, in the example of FIG. 22, since all CCs are provided E-PBCH, as long as you refer to any CC, you can know the CC that can be used by the LTE-A mobile station.

Further, since the mobile station 300 is an LTE-A mobile station, CC #4 and #5 can be collected and used for data transmission and reception. In this case, in the case of random access, the CC (CC # 4) is also used first. Thereafter, when the connection between the base station 100 or the relay station 200 and the mobile station 300 is established, other CCs (CC #5) usable by the LTE-A mobile station can be used under the control of the base station 100 or the relay station 200. .

Further, the base station 100 or the relay station 200 can dynamically change the CCs that can be used by the LTE-A mobile stations among CC #1 to #5 in response to the communication status. In this case, the base station 100 or the relay station 200 dynamically changes the content of the extension notification information transmitted by the E-PBCH.

Fig. 23 is a view showing an example of the second transmission and reception of the extension notification information. In the example of Fig. 23, the base station 100 or the relay station 200 is provided with PBCHs in all of CC #1 to #5, and the E-PBCH is set only in CC #4 and #5 which can be used by the LTE-A mobile station. At the PBCH of each CC, the notification information including the information used to connect the CC is transmitted. In the E-PBCH of CC #4, #5, the extension notification information indicating the relationship between the CC #1~#5 and the type of the mobile station is transmitted.

In this case, the mobile station 300 of the LTE-A mobile station receives the extension notification information transmitted by the E-PBCH of one of CC #4, #5. From the reception extension notification information, it can be seen that CC #4, #5 are CCs that can be used by the LTE-A mobile station. Moreover, one of CC #4, #5 is selected as the CC for random access. So, in the example of Figure 23, because only on the LTE-A mobile station The E-PBCH can be set by using the CC, so wireless resources can be saved.

Further, if it is determined in advance that the E-PBCH is set only for the CC that can be used by the LTE-A mobile station, the mobile station 300 can determine that the CC that can detect the E-PBCH can be used by the CC of the LTE-A mobile station. In the case, the information transmitted by the E-PBCH sent by CC #4, #5 is informative, and information about other CCs is not included.

Further, the base station 100 or the relay station 200 may be provided with only one of CC #4 and #5, and may be provided with E-PBCH. In other words, the E-PBCH may be provided in at least one of the CCs that can be used by the LTE-A mobile station. Further, the CC in which the E-PBCH is provided is referred to as a basic CC or a basic band, and the other CCs may be referred to as an extended CC or an extended band.

Fig. 24 is a view showing an example of the third transmission and reception of the extension notification information. In the example of Fig. 24, the base station 100 or the relay station 200 is provided with PBCHs in all of CC #1 to #5, and E-PBCH is set only in the center position CC #3 of CC #1~# 5 on the frequency axis. . At the PBCH of each CC, the notification information including the information used to connect the CC is transmitted. In the E-PBCH of CC #3, an extension notification information indicating information including the relationship between CC #1~#5 and the type of the mobile station is transmitted.

In this case, the mobile station 300 of the LTE-A mobile station receives the extension notification information transmitted by the E-PBCH in CC #3. From the received extension notification information, it can be seen that CC #4, #5 are CCs that can be used for the LTE-A mobile station. Moreover, one of CC #4, #5 is selected as the CC for random access. As described above, in the example of Fig. 24, since only the CC that can be used by the LTE-A mobile station can set the E-PBCH, radio resources can be saved. Also, the mobile station 300 is only With reference to a predetermined CC (for example, a CC located at the center of CC #1 to #5 on the frequency axis), the processing of the mobile station 300 can be simplified, and the processing load can be reduced.

According to the mobile communication system according to the second embodiment as described above, the base station 100 or the relay station 200 can restrict the connectable CCs according to the type of the mobile station. Therefore, the scheduling of the environment in which the LTE-A mobile station is mixed with the LTE mobile station becomes easy. In addition, it is easy to allocate broadband wireless resources to LTE-A mobile stations.

Further, the LTE-A mobile station can know the usable CC before connecting to the base station 100 or the relay station 200 by referring to the extension notification information. Therefore, even in the case where the CC connectable according to the type of the mobile station is restricted, the connection processing can be smoothly performed. Further, the LTE-A mobile station can reduce the CC of the received power when the cell is selected or the CC is selected, and the processing load can be reduced. Plus, the processing time can be shortened when cells are selected (including when they are transferred).

For example, the LTE-A mobile station detects three peripheral cells in advance, and two of the five CCs of each cell are assumed to be allocated to the LTE-A mobile station. In this case, it is necessary to measure the received power of 5 × 3 = 15 CCs without referring to the extension notification information, but when selecting a CC that receives a large power as much as possible. On the other hand, when the reference extension information is excluded from the CC that cannot be used by the LTE-A mobile station, it is only necessary to measure the received power of 2 × 3 = 6 CCs. That is, the processing of the LTE-A mobile station can be reduced to about two-fifths.

Of course, the extended notification channel not only displays information on the correspondence between the complex CC and the type of the mobile station, but also can be used to transmit various information that should be notified to the LTE-A mobile station. Also, you can also inform the new notification that is not defined in LTE. The channel is called by a name other than "Augmentation Notification Channel". For example, one of the conventional notification channel and the extension notification channel may also be referred to as a first notification channel, and the other may be referred to as a second notification channel.

Only the principles of the present invention are shown with respect to the above. Furthermore, most of the modifications and changes are possible for the person engaged in the occupation, and the present invention is not limited to the correct configuration and application examples described above, and all the modifications and equivalents are provided by the present invention. The scope of the appended claims and their equivalents are considered to be within the scope of the invention.

1‧‧‧Wireless communication device

1a‧‧‧1st Generation Department

1b‧‧‧2nd Generation Department

1c‧‧‧Send Department

2, 3‧‧‧ mobile communication devices

2a‧‧‧Receiving Department

2b‧‧‧Control Department

4a‧‧‧1st notification channel

4b‧‧‧2nd notification channel

5‧‧‧Secondary synchronization channel

6‧‧‧ entity notification channel

7‧‧‧Expanding entity notification channel

8‧‧‧ entity control format indication channel

9‧‧‧ Physical Downlink Control Channel

10‧‧‧Entity hybrid automatic repeat request indication channel

11‧‧‧ Random Access Response

12‧‧‧Upstream entity sharing channel

13‧‧‧ Progress transmission

14‧‧‧ Random Access Response

15‧‧‧Competition resolution

100‧‧‧Base Station

112‧‧‧Wireless Receiving Department

113‧‧‧Demodulation and Decoding Department

114‧‧‧Quality Information Extraction Department

115‧‧‧Programming machine

116‧‧‧RA control signal extraction department

117‧‧‧RA Control Department

118‧‧‧RA Control Signal Generation Department

119‧‧‧Inform the Information Generation Department

120‧‧‧Expanding Information Generation Department

121‧‧‧Control Information Generation Department

122‧‧‧Synchronous Signal Generation Department

123‧‧‧RS Generation Department

124‧‧‧ Mapping Department

125‧‧‧Code Modulation Department

126‧‧‧Wireless Transmission Department

200‧‧‧ Relay Station

212‧‧‧Wireless Receiving Department

213‧‧‧Demodulation and Decoding Department

214‧‧‧Quality Information Extraction Department

215‧‧‧Programmer

216‧‧‧RA control signal extraction department

217‧‧‧RA Control Department

218‧‧‧RA Control Signal Generation Department

219‧‧‧Inform the Information Generation Department

220‧‧‧Expanding Information Generation Department

221‧‧‧Control Information Generation Department

222‧‧‧Synchronous Signal Generation Department

223‧‧‧RS Generation Department

224‧‧ ‧ Mapping Department

225‧‧‧Code Modulation Department

226‧‧‧Wireless Transmission Department

300‧‧‧Mobile Station

312‧‧‧Wireless Receiving Department

313‧‧‧Demodulation and Decoding Department

314‧‧‧Control Information Extraction Department

315‧‧‧ inform the information extraction department

316‧‧‧Expansion Information Dissemination Department

317‧‧‧Synchronous signal extraction department

318‧‧‧Synchronous Control Department

319‧‧‧ Terminal Control Department

320‧‧‧RS extraction department

321‧‧‧Quality Measurement Department

322‧‧‧Quality Information Generation Department

323‧‧‧ Receiving Power Measurement Department

324‧‧‧Cell Selection Department

325‧‧‧RA control signal extraction department

326‧‧‧RA Control Department

327‧‧‧RA Control Signal Generation Department

328‧‧‧Code Modulation Department

329‧‧‧Wireless Transmission Department

400‧‧‧Mobile Station

S12‧‧‧Synchronization

S14‧‧‧Measured receiving power

S15‧‧‧Select cells

S17‧‧‧Confirm the connectable CC

S18‧‧‧Select CC

S32‧‧‧Synchronization

S34‧‧‧Measured receiving power

S35‧‧‧Select cells

S37‧‧‧Select CC

Fig. 1 is a view showing a mobile 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 the carrier aggregation mode.

Fig. 6 is a diagram showing an example of a spectrum aggregation mode.

Figure 7 is a diagram showing the relationship between a mobile station and a component carrier.

Fig. 8 is a view showing a first example of allocation of component carrier identification information.

Fig. 9 is a view showing a second example of allocation of component carrier identification information.

Fig. 10 is a view showing a configuration example of a radio frame.

Fig. 11 is a view showing an example of the first allocation of the extended entity notification channel.

Fig. 12 is a view showing a second allocation example of the extended entity notification channel.

Figure 13 is a diagram showing a third allocation example of the extended entity notification channel.

Figure 14 is a diagram showing a fourth allocation example of the extended entity notification channel.

Fig. 15 is a view showing a fifth allocation example of the extended entity notification channel.

Figure 16 is a diagram showing a sixth allocation example of the extended entity notification channel.

Figure 17 is a block diagram showing the base station.

Figure 18 is a block diagram showing the relay station.

Figure 19 is a block diagram showing the mobile station.

Fig. 20 is a sequence diagram showing a first connection example from the mobile station to the base station.

Fig. 21 is a sequence diagram showing a second connection example from the mobile station to the base station.

Fig. 22 is a view showing an example of the first transmission and reception of the extension notification information.

Fig. 23 is a view showing an example of the second transmission and reception of the extension notification information.

Fig. 24 is a view showing an example of the third transmission and reception of the extension notification information.

1‧‧‧Wireless communication device

1a‧‧‧1st Generation Department

1b‧‧‧2nd Generation Department

1c‧‧‧Send Department

2, 3‧‧‧ mobile communication devices

2a‧‧‧Receiving Department

2b‧‧‧Control Department

4a‧‧‧1st notification channel

4b‧‧‧2nd notification channel

Claims (11)

A mobile communication system comprising a wireless communication device and a mobile communication device, wherein the wireless communication device includes: a first generation unit configured to generate a first notification information, wherein the first notification information can be used for 1 and a processing performed by the mobile station of the second type; the second generating unit is configured to generate a second notification information, and the second notification information can be used for processing by the mobile station of the second type; and the transmitting unit The first notification information is transmitted by the first notification channel, and the second notification information is transmitted by the second notification channel. The mobile communication device is configured as a mobile station of the second type, and includes: receiving The first notification information transmitted by the first notification channel and the second notification information transmitted by the second notification channel; and the control unit using the received first and second notifications Information to control communication with the aforementioned wireless communication device. The mobile communication system according to claim 1, wherein the second notification information includes information indicating a relationship between a plurality of frequency bands used by the wireless communication device for wireless communication and a type of the mobile station; and the control unit is Based on the second notification information, a frequency band usable by the second type of mobile station among the plurality of frequency bands is determined. The mobile communication system according to claim 2, wherein the second notification information is used to display the relationship between the plurality of frequency bands and the type of the mobile station in order to identify the identification information of the plurality of frequency bands. For example, in the mobile communication system of claim 3, the cell identification information respectively assigned to the plurality of frequency bands or the unique number in the same cell is used as the identification information. The mobile communication system according to claim 1, wherein the transmitting unit sets the first notification channel in a plurality of frequency bands for wireless communication by the wireless communication device, and sets the aforementioned at least one of the plurality of frequency bands. The second notification channel. The mobile communication system according to claim 5, wherein the transmitting unit sets the second notification channel in a frequency band usable by the mobile station of the second type among the plurality of frequency bands. The mobile communication system according to claim 1, wherein the second notification channel is set to be at least one of a frequency and a time, and is set to a radio resource adjacent to the first notification channel. The mobile communication system according to claim 1, wherein the second notification channel is set to be at least one of a frequency and a time, and is set to a radio resource adjacent to a synchronization channel for transmitting the synchronization signal. A wireless communication device includes: a first generation unit configured to generate a first notification information, wherein the first notification information can be used for processing by the first and second types of mobile stations; The second generating unit is configured to generate a second notification information, wherein the second notification information can be used for processing by the mobile station of the second type; and the transmitting unit is configured to notify the first notification information by the first notification channel. The second notification information is sent to the second notification channel sender. A mobile communication device comprising: a receiving unit configured to receive first notification information by a first notification channel by a wireless communication device capable of wirelessly communicating with the first and second types of mobile stations, and to provide a second notification channel Receiving the second notification information, and the first notification information can be used by the mobile station for the first and second types of mobile stations, and the second notification information can be used for the mobile station of the second type. And the control unit controls the communication with the wireless communication device using the received first and second notification information, and the mobile communication device is the mobile device of the second type . A wireless communication method is a wireless communication method including a mobile communication system of a wireless communication device and a mobile communication device, wherein the wireless communication device generates a first notification information and a second notification information, and the first notification information The second notification information can be used for processing by the mobile station of the first type and the second type, and the second notification information can be used for processing by the mobile station of the second type; the wireless communication device is configured to use the first notification information by the first Informing the channel to send, and transmitting the aforementioned second notification information to the second notification channel sender; The mobile communication device as the mobile station of the second type receives the first notification information transmitted by the first notification channel and the second notification information transmitted by the second notification channel; the mobile communication device is The communication with the wireless communication device is controlled using the received first and second notification information.