TWI423611B - Wireless communication apparatus and wireless communication method - Google Patents

Description

Wireless communication device and wireless communication method Field of invention

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

Background of the invention

Wireless communication systems such as mobile phone systems or wireless LANs (Local Area Networks) are widely used today. With regard to wireless communication technology, discussions on next-generation technologies are frequently conducted to improve communication speed and communication quality. Such wireless communication technologies include techniques for communicating over a plurality of wireless communication devices (eg, between a wireless base station and a mobile station) using a plurality of carriers. It is sometimes said that a complex carrier is used for carrier combining, and in this case, each carrier is sometimes referred to as a component carrier.

In wireless communication, a wireless communication device sometimes transmits a control signal to another wireless communication device. The information conveyed as a control signal may include information that the other device uses to receive information transmitted by our device (for example, information indicating the format used for data transmission). It may also contain information specifying the method of transmission when the other party's device transmits the data (for example, specifying the information that should be used in the format of the data transmission). For example, the information transmitted from the wireless base station to the mobile station may include information that the mobile station refers to when receiving the downlink data channel, or information that the mobile station refers to when transmitting the uplink data channel.

Here, in the case where wireless communication is performed using a plurality of carriers between two wireless communication devices, the radio resources for controlling signal transmission and the radio resources for data transmission and reception of the control signal application object belong to different carriers. Case. The problem in this case lies in the method of identifying the signal to which the control signal is applied.

As one of the identification methods, a method of adding a carrier (carrier indicator) for carrier identification to a control signal to indicate a carrier to be applied has been proposed (refer to, for example, Section 15.4 of Non-Patent Document 1). Further, a recognition method has been proposed which is applied to a CRC (Cyclic Redundancy Check) attached to a control signal in a codec sequence corresponding to an ID (IDentifier: identifier) of a mobile station assigned to a communication object. The radio base station in which the bit is subjected to the scramble processing is checked (refer to, for example, Non-Patent Document 2). In the method, only the ID of the number of carriers is allocated to each mobile station, and the CRC bits are subjected to the codec processing by the codec sequence corresponding to any ID, thereby simultaneously identifying the carrier of the mobile station and the applicable object from the CRC. .

Advanced technical literature Non-patent literature

Non-Patent Document 1: 3GPP (3rd Generation Partnership Project), "Final Report of 3GPP TSG-RAN WG1 #57 v1. 0.0", TSG RAN WG1 #57bis, R1-092292, July 2009.

Non-Patent Document 2: 3GPP (3rd Generation Partnership Project), "Control signal for carrier aggregation", TSG-RAN WG1 #55bis, R1-090375, Jan. 2009.

However, the method described in Non-Patent Document 1 has a problem that the radio frequency resource is additionally consumed in order to add a carrier indicator element to the control signal, and the transmission efficiency of the control signal is lowered. Further, in the method described in Non-Patent Document 2, the ID of the same number as the carrier is assigned to each communication target, and the ID is exhausted, which poses a problem. When the length of the bit string of the ID is fixed, the upper limit of the number of communication objects that can be communicated in parallel becomes small. For example, when five carriers are used, the upper limit of the number of communication objects may be 1/5 as compared with the case of using only one carrier.

In addition, there will be another control signal to inform the information indicating the boundary between the control signal and the data channel. In this case, when the above-mentioned additional control signal cannot be correctly received, since the boundary between the control signal and the data channel cannot be correctly detected, there is a problem that the data channel cannot be correctly received.

In one aspect of the present invention, an object of the present invention is to provide a wireless communication device and a wireless communication method capable of efficiently notifying a communication target of a wireless resource of a processing target selected from a plurality of wireless resources.

As a first aspect, there is provided a wireless communication device that transmits a signal for processing by a wireless communication device by any of a plurality of second wireless resources by a first wireless resource. The wireless communication device has a signal generation unit and a transmission unit. The signal generation unit generates a first signal for processing by another wireless communication device and a second signal for error detection of the first signal, and generates a signal including a first signal and a second signal, and a part of the interval The third signal subjected to the agitation process. In the codec processing, the section corresponding to the second radio resource to be processed by the first signal is selected in the complex section corresponding to the plurality of second radio resources, and the signal of the selected section is stirred. Code processing. The transmitting unit transmits the third signal generated by the first radio resource.

As a second aspect, there is provided a wireless communication device that transmits a signal for processing by a wireless communication device to any of a plurality of second wireless resources by a first wireless resource. The wireless communication device has a signal generation unit and a transmission unit. The signal generation unit generates a first signal for processing by another wireless communication device and a second signal for error detection of the first signal, and generates a first signal and a second signal, and at least the first signal A part of the third signal subjected to the agitation process. In the codec process, a codec sequence corresponding to the second radio resource to be processed by the first signal is used in the complex codec sequence corresponding to the plurality of second radio resources. The transmitting unit transmits the third signal generated by the first radio resource.

As a third aspect, there is provided a wireless communication device that transmits a signal for processing by a wireless communication device to any of a plurality of second wireless resources by using a first wireless resource. The wireless communication device has a signal generation unit and a transmission unit. The signal generating unit generates a first signal for processing by another wireless communication device and a second signal for error detection of the first signal, and generates a signal sequence including the first signal and the second signal. In at least part of the interval, the third signal of the bit order has been replaced. In the replacement of the bit order, the permutation method corresponding to the second radio resource to be processed by the first signal is used in the complex multiplication method corresponding to the plurality of second radio resources. The transmitting unit transmits the third signal generated by the first radio resource.

As a fourth aspect, a wireless communication device having a receiving unit and a detecting unit is provided. The receiving unit receives the third signal from the other wireless communication device by using the first wireless resource, and the third signal includes the first signal for processing the processing of any of the plurality of second wireless resources, and the first signal for the first signal. The second signal of the error detection, and the signal of a part of the interval is subjected to the codec processing. The detection unit performs a de-agglomeration process on the received third signal for each of the plurality of mutually complex complex sections corresponding to the plurality of second radio resources, and detects that the result of the error detection after the de-coupling process is in accordance with a predetermined condition The second radio resource is used as a target for the processing of the first signal.

As a fifth aspect, a wireless communication device having a receiving unit and a detecting unit is provided. The receiving unit receives the first signal including the processing for any one of the plurality of second radio resources and the second signal for the error detection of the first signal from the other wireless communication device by using the first radio resource, and At least one of the first signals is subjected to the third signal of the coded processing. The detecting unit performs the de-agglomeration processing on the received third signal by using each sequence of the complex second-frequency complex and the complex multi-coded sequence, and detects that the result of the error detection after the de-coalling process is in accordance with a predetermined condition. The second radio resource corresponding to the code sequence is used as the target of the process of using the first signal.

As a sixth aspect, a wireless communication device having a receiving unit and a detecting unit is provided. The receiving unit receives the first signal including the processing for any one of the plurality of second radio resources and the second signal for the error detection of the first signal from the other wireless communication device by the first radio resource. In at least a part of the interval of the signal sequence, the bit order is replaced by the third signal. The detecting unit rearranges the bit order of the received third signal according to each method corresponding to the plural second radio resource and the different complex rearrangement method, and detects that the result of the error detection after the rearrangement meets the predetermined condition The second radio resource corresponding to the row method is used as the object of the process of using the first signal.

As a seventh aspect, a wireless communication method is provided which is performed between a first wireless communication device and a second wireless communication device by using a first wireless resource and a plurality of second wireless resources. In the wireless communication method, a first signal for processing one of the plurality of second radio resources and a second signal for error detection of the first signal are generated. Generating a third signal, wherein the third signal includes the first signal and the second signal, and the second wireless resource corresponding to the plurality of second radio resources and the mutually different complex interval and the target used for processing the first signal The signal of the corresponding interval is subjected to the codec processing. The third signal is transmitted in the first radio resource. For each section of the complex section, the received third signal is subjected to descrambling processing, and the second radio resource corresponding to the section corresponding to the predetermined condition is detected as a result of the error detection after the de-glitching process. The first signal is processed for the detected second radio resource.

As a eighth aspect, a wireless communication method is provided which is performed between a first wireless communication device and a second wireless communication device by using a first wireless resource and a plurality of second wireless resources. In the wireless communication method, a first signal for processing one of the plurality of second radio resources and a second signal for error detection of the first signal are generated. Generating a third signal, wherein the third signal includes the first signal and the second signal, and the second and second plurality of radio resources corresponding to the plurality of radio resources are used, and the second object of the processing using the first signal is used. The agitation code sequence corresponding to the radio resource performs at least one part of the first signal to be coded. The third signal is transmitted in the first radio resource. The received third signal is subjected to descrambling processing using each sequence of the complex codec sequence, and the second radio resource corresponding to the coded sequence corresponding to the predetermined condition is detected as a result of the error detection after the de-glitching process. The first signal is processed for the detected second radio resource.

As a ninth aspect, a wireless communication method is provided which is performed between a first wireless communication device and a second wireless communication device by using a first wireless resource and a plurality of second wireless resources. In the wireless communication method, a first signal for processing one of the plurality of second radio resources and a second signal for error detection of the first signal are generated. Generating a third signal, wherein the third signal includes the first signal and the second signal, and the second wireless device that is used for the processing of the first signal is used in the complex multiple replacement method corresponding to the second plurality of radio resources The replacement method corresponding to the resource replaces the bit sequence of the signal in at least a part of the interval. The third signal is transmitted in the first radio resource. According to each method of the complex rearrangement method corresponding to the complex replacement method, the bit order of the received third signal is rearranged, and the second radio resource corresponding to the rearrangement method in which the result of the error detection after the rearrangement meets the predetermined condition is detected. The first signal is processed for the detected second radio resource.

According to the wireless communication device and the wireless communication method, the wireless resource of the processing target selected from the plurality of wireless resources can be efficiently notified to the communication target.

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

Simple illustration

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

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

Fig. 3 is a view showing an example of setting a component carrier in the second embodiment.

Fig. 4 is a view showing a configuration example of a radio frame of the second embodiment.

Fig. 5 is a view showing an example of allocation of PDSCH and PUSCH in the second embodiment.

Fig. 6 is a block diagram showing a radio base station according to the second embodiment.

Fig. 7 is a block diagram showing the details of the PDCCH generating unit in the second embodiment.

Fig. 8 is a block diagram showing a mobile station according to the second embodiment.

Fig. 9 is a view showing the details of the control signal decoding unit of the second embodiment.

Fig. 10 is a flow chart showing the transfer processing of the second embodiment.

Fig. 11 is a flow chart showing the receiving process of the second embodiment.

Fig. 12 is a view showing a first example of the control signal of the second embodiment.

Fig. 13 is a view showing a second example of the control signal of the second embodiment.

Fig. 14 is a view showing a third example of the control signal of the second embodiment.

Fig. 15 is a view showing an example of allocation of PDSCH in the third embodiment.

Fig. 16 is a flow chart showing the transfer processing of the third embodiment.

Fig. 17 is a flow chart showing the receiving process of the third embodiment.

Fig. 18 is a flow chart showing the transfer processing of the fourth embodiment.

Fig. 19 is a flow chart showing the receiving process of the fourth embodiment.

Fig. 20 is a view showing an example of a control signal in the fourth embodiment.

Fig. 21 is a view showing the details of the PDCCH generating unit in the fifth embodiment.

Fig. 22 is a view showing the details of the control signal decoding unit of the fifth embodiment.

Fig. 23 is a view showing an example of the control signal of the fifth embodiment.

Fig. 24 is a view showing a modification of the control signal of the fifth embodiment.

Fig. 25 is a view showing the details of the PDCCH generating unit in the sixth embodiment.

Fig. 26 is a view showing the details of the control signal decoding unit of the sixth embodiment.

Figure 27 is a view showing a first example of the control signal of the sixth embodiment.

Fig. 28 is a view showing a second example of the control signal of the sixth embodiment.

Fig. 29 is a view showing a modification of the control signal of the sixth embodiment.

Fig. 30 is a view showing the details of the PDCCH generating unit in the seventh embodiment.

Figure 31 is a view showing the details of the control signal decoding unit of the seventh embodiment.

Fig. 32 is a view showing a first example of the control signal of the seventh embodiment.

Figure 33 is a view showing a second example of the control signal of the seventh embodiment.

Fig. 34 is a view showing the details of the PDCCH generating unit in the eighth embodiment.

Fig. 35 is a view showing the details of the control signal decoding unit of the eighth embodiment.

Fig. 36 is a view showing an example of the control signal of the eighth embodiment.

Fig. 37 is a view showing a modification of the control signal of the eighth embodiment.

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 wireless communication system according to the first embodiment. The wireless communication system includes wireless communication devices 1, 2. The wireless communication systems 1 and 2 perform wireless communication using the radio resource 3a (first radio resource) and the radio resources 3b, 3c, and 3d (the plurality of second radio resources). In the case of implementation as a mobile communication system, it is conceivable to use, for example, a wireless base station as the wireless communication device 1 and a mobile station as the wireless communication device 2. The radio resources 3b, 3c, and 3d have radio resources in mutually different carriers, or radio resources in mutually different timings in the same carrier.

The wireless communication device 1 has a signal generating unit 1a and a transmitting unit 1b. The signal generating unit 1a generates a signal #1 (first signal) for processing by the wireless communication device 2, and a signal #2 (second signal) for error detection of the signal #1. Signal #2 is for example a CRC signal. Then, according to the signals #1, #2, the signal #3 (the third signal) is generated. The transmission unit 1b transmits the signal #3 generated by the signal generation unit 1a via the radio resource 3a.

Here, the signal #3 is applied to the signal sequence including the signals #1 and #2. The signal generation unit 1a selects a conversion method of the radio resource corresponding to the application target of the signal #1 from the complex conversion method corresponding to the radio resources 3b, 3c, and 3d. As the type of the conversion method, the following method can be considered: (1) the interval of the codec processing is set to be variable, and the method of agitating the code part of the signal series including the signals #1 and #2 is performed; (2) the code is processed. The sequence is set to be variable, at least one of the signals #1 is subjected to a codec process; and (3) a method of replacing the bit order in at least a portion of the signal sequence including the signals #1 and #2.

In the case of the method (1), the signal generation unit 1a associates the sections of the complex multiplication coding process with the radio resources 3b, 3c, and 3d in advance. Different sections mean that the sections are not completely identical, and there may be a repetition between a section corresponding to a certain radio resource and a section corresponding to another radio resource. Then, the signal generating unit 1a selects a section corresponding to the radio resource to which the signal #1 is applied in the complex section, and performs a codec processing on the signal of the selected section. For example, between the signal of the selected interval and the codec sequence, the logical OR operation is performed in units of bits. The codec sequence for the codec processing may be a predetermined fixed bit string, or a variable bit string determined in accordance with a communication condition or the like.

In the case of the method (2), the signal generating unit 1a associates the complex multiplicative codec sequences with the radio resources 3b, 3c, and 3d in advance. Then, in the complex codec sequence, the codec sequence of the radio resource corresponding to the applicable object of the signal #1 is selected, and the coded process is performed by using the selected sequence. The interval of the code processing is all or part of the interval of the signal #1. In the latter case, a part of the section may be a predetermined fixed section or a variable section determined in accordance with a communication condition or the like. Further, the complex codec sequence may also be obtained by subjecting the predetermined codec sequence to only cyclically shifting the number of bits different from each other.

In the case of the method (3), the signal generating unit 1a associates the complex multiplicative replacement method with the radio resources 3b, 3c, and 3d in advance. Then, the bit order is replaced in accordance with the replacement method of the radio resource corresponding to the applicable object of the signal #1 in the complex replacement method. For example, as the type of the replacement method, a method of cyclically shifting only the number of bits corresponding to the radio resource to be applied to all or a part of the section of the signal #1 can be considered. Also, a method of cyclically shifting all or part of the interval of the signal #2 may be considered. Also, a method of inserting the signal #2 in the position corresponding to the radio resource of the applicable object in the signal #1 may be considered.

The wireless communication device 2 includes a receiving unit 2a and a detecting unit 2b. The receiving unit 2a receives the signal #3 from the wireless communication device 1 with the wireless resource 3a. The detecting unit 2b attempts a conversion process for each of the methods of the complex number conversion method corresponding to the radio resources 3b, 3c, and 3d with respect to the signal #3 received by the receiving unit 2a. This conversion processing corresponds to the reverse processing of the conversion processing performed by the wireless communication device 1. Then, error detection is performed on the converted signals, and a conversion method in which the result of the error detection meets the predetermined condition is specified. The radio resource corresponding to the specific conversion method is detected as the applicable object of the signal #1.

Here, as the complex conversion method, the detecting unit 2b adopts a method corresponding to the complex conversion method employed by the wireless communication device 1. That is, in the case of the method (1), the detecting unit 2b performs the descrambling process and the error detection of the signal #3 for each section of the complex section. For example, by using the same sequence as the codec sequence used for the codec process, a mutually exclusive logical OR operation is performed for each bit. In the case of the method (2), the detecting unit 2b performs the descrambling process and the error detection of the signal #3 by using each sequence of the complex codec sequence. In the case of the method (3), the detecting unit 2b performs the order rearrangement and error detection of the signal #3 in accordance with each method of the complex rearrangement method. Thereby, the conversion method selected by the wireless communication device 1 in the complex conversion method can be estimated.

Moreover, the error detection can be compared with the signal #1, #2, and the signal equivalent to the signal #1, by the signal #3 after the conversion processing has been performed, such as the de-sequencing code or the bit sequence rearrangement. The calculated parity is achieved by a signal equivalent to signal #2. As a judgment condition for the success of the error detection, for example, no error or the number of error bits is below the threshold value.

Further, the detecting unit 2b may execute in parallel or successively execute the complex conversion method. In other words, it is conceivable that the detecting unit 2b copies the signal #3 in accordance with the candidate number of the conversion method, and performs conversion processing and error detection processing on the complex conversion method in parallel. Further, the conversion processing and the error detection processing are performed on one of the complex conversion methods, and if the result of the error detection does not satisfy the predetermined condition, the next conversion method may be tried.

Further, the control information transmitted as the signal #1 includes information referred to when the wireless communication device 2 receives data from the wireless communication device 1, or information referred to when the wireless communication device 2 transmits data to the wireless communication device 1. In the former case, the wireless communication device 2 receives the data signal from the detected wireless resources in the wireless resources 3b, 3c, and 3d, and retrieves the data by referring to the signal #1. In the latter case, a data signal is generated with reference to signal #1, and the data signal is transmitted using the detected wireless resources in the wireless resources 3b, 3c, and 3d.

According to the wireless communication system of the first embodiment, the wireless communication device 1 generates the signal #1, and the processing for processing any of the plurality of radio resources 3b, 3c, and 3d (the second radio resource). Signal #2 for error detection of signal #1. Then, from the complex conversion method corresponding to the radio resources 3b, 3c, and 3d, the conversion method of the radio resource corresponding to the applicable object of the signal #1 is selected, and the signal #3 is generated by applying the selected conversion method. In the signal #3, the content corresponding to the signals #1, #2 is included. The signal #3 is transmitted by the radio resource 3a (first radio resource).

Further, the wireless communication device 2 performs conversion processing of the signal #3 (reverse processing of the conversion processing by the wireless communication device 1) that is attempted to be received by the complex conversion method. Then, after the conversion process, the signals corresponding to the signals #1 and #2 are extracted, error detection is performed, and the conversion method employed by the wireless communication device 1 is estimated from the result of the error detection. The radio resource corresponding to the estimated conversion method among the radio resources 3b, 3c, and 3d is detected as the applicable object of the signal #1. Thereafter, processing of the detected wireless resources (e.g., data reception or data transmission) is performed.

Thereby, the wireless communication device 1 can be efficiently notified to the wireless communication device 2 of the wireless resource to which the signal #1 is applied. In other words, compared with the method of the above-described Non-Patent Document 1, the bit number for identifying the radio resources 3b, 3c, and 3d is not added to the signal #1, so that the amount of consumption of the radio resource 3a can be suppressed. Further, compared with the method of Non-Patent Document 2, it is only necessary to perform the codec processing of the signal #2, and it is possible to suppress the increase in the number of the code sequences to be prepared without recognizing both the communication target and the radio resource. Therefore, the ID depletion for identifying the codec sequence can be suppressed.

Further, the wireless communication system according to the first embodiment can be realized as a mobile communication system such as an LTE-A (Long Term Evolution-Advanced) system. In this case, as described above, it is conceivable to use the radio base station as the radio communication device 1 and the mobile station as the radio communication device 2. The following embodiments are described for the communication between the wireless base station and the mobile station, and the communication method between the wireless communication devices 1 and 2 is applied. The communication method according to the first embodiment can also be applied to wireless communication other than mobile communication such as fixed wireless communication.

[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 radio base station 100 and mobile stations 200 and 200a.

The wireless base station 100 is a wireless communication device that wirelessly communicates with a mobile station in a cell. The wireless base station 100 can perform wireless communication in parallel with the plurality of mobile stations. The mobile stations 200 and 200a are mobile radio terminal devices that are connected to the radio base station 100 and perform wireless communication. Examples of the mobile stations 200 and 200a include a mobile phone or a portable information terminal.

The wireless base station 100 and the mobile stations 200, 200a can perform two-way communication. That is, data transfer (downlink communication) from the wireless base station 100 to the mobile stations 200, 200a and data transfer from the mobile stations 200, 200a to the wireless base station 100 (uplink communication) can be performed. Further, the radio base station 100 and the mobile stations 200 and 200a are connected to each of the downlink and uplink chains, and perform communication (carrier coupling) using a plurality of component carriers.

The wireless base station 100 controls the scheduling of downlink communication and uplink communication. Control information is appropriately transmitted from the radio base station 100 to the mobile station 200. Further, the wireless base station 100 can be regarded as an example of the wireless communication device 1, and the mobile stations 200 and 200a can be regarded as an example of the wireless communication device 2.

Fig. 3 is a view showing an example of setting a component carrier in the second embodiment. In the mobile communication system according to the second embodiment, data can be transmitted using up to five component carriers (CC) for uplink (UL) and downlink (DL), respectively. Each component carrier is allocated a frequency band of a predetermined bandwidth (for example, 20 MHz).

The radio base station 100 can transmit data by using one of the five component carriers (CC#1 to #5) in the downlink or the radio resources in the plurality of component carriers. Further, the mobile stations 200 and 200a can transmit data by using one of the five component carriers (CC#1 to #5) in the uplink or the radio resources in the plurality of component carriers.

Further, in the example of FIG. 3, although five frequency bands are consecutively allocated in the uplink and the downlink, a discontinuous frequency band may be allocated. Further, the number of component carriers of the uplink and the downlink can be set to an arbitrary number. The number of component carriers may be different between the uplink and the downlink. For example, five downlinks may be provided, and three component carriers may be provided in the uplink. Further, each component carrier may not have the same bandwidth.

Fig. 4 is a view showing a configuration example of a radio frame of the second embodiment. In order to allow the wireless base station 100 to communicate wirelessly with the mobile station 200, a radio frame is formed on each component carrier. One radio frame contains a plurality of sub-frames (for example, 10 sub-frames).

The radio resources in the subframe are managed by the radio base station 100. The minimum unit of frequency direction of resource management is subcarrier, and the smallest unit of time direction is symbol. The use of radio resources differs between the uplink and the downlink. An area for the uplink shared channel (PUSCH: Physical Uplink Shared CHannel) is provided in the UL subframe. In addition, the DL subframe is provided with a downlink shared channel (PDSCH: Physical Downlink Shared CHannel) and a downlink control channel (PDCCH: Physical Downlink Control CHannel). region.

The PUSCH mobile station 200, 200a is used to transmit the physical entity channel of the user data and control information to the wireless base station 100. The control information transmitted by the PUSCH includes the allocation requirements of the radio resources for transmitting the user data. A PUSCH is set for each of the mobile stations 200 and 200a. In one UL subframe, the PUSCH of the multiple mobile stations can be set by frequency division. The radio resource allocation to the PUSCH is dynamically performed by the radio base station 100.

The PDSCH-based radio base station 100 is configured to transmit physical data channels of user data or upper layer control data to the mobile stations 200, 200a. A PDSCH is set for each of the mobile stations 200 and 200a. In one DL subframe, the PDSCH of the complex mobile station can be set by orthogonal frequency division. That is, as a radio resource in which a plurality of symbols are allocated as an area that can be allocated to the PDSCH, the area can be divided to set a complex PDSCH. The radio resource allocation to the PDSCH is dynamically performed by the radio base station 100.

The PDCCH-based radio base station 100 is configured to transmit physical entity channels of control information to the mobile stations 200, 200a. The control information transmitted on the PDCCH contains information about the PUSCH and the PDSCH. The information about the PUSCH includes: information indicating a radio resource allocated to the PUSCH; information specifying a data format such as Modulation and Coding Scheme (MCS); and HARQ (Hybrid Automation Repeat reQuest) Indicates the information of the uplink retransmission control. The information about the PDSCH includes: information indicating the radio resources allocated to the PDSCH; information indicating the format of the data; and information indicating the downlink retransmission control.

The PDCCH is set corresponding to the PUSCH and the PDSCH, respectively. That is, the control information about the PUSCH and the control information about the PDSCH are transmitted in different PDCCHs. Also, control information for different mobile stations is transmitted with different PDCCHs. In one DL subframe, the complex PDCCH can be set by orthogonal frequency division. That is, as an area that can be allocated to the PDCCH, a radio resource of a plurality of symbols is provided from the beginning of the DL subframe, and a complex PDCCH can be set in the area.

Further, the carrier structure and the structure of the radio frame shown in Figs. 3 and 4 are only for realizing an example of the mobile communication system according to the second embodiment. For example, in the third and fourth figures, a frequency division duplex (Frequency Division Duplex) is used for bidirectional communication, but a time division duplex (Time Division Duplex) may be used. That is, the UL subframe and the DL subframe can also communicate using wireless resources that alternately appear in a time-sharing manner.

Moreover, in the above description, the control information about the PUSCH is transmitted with different PDCCHs.

The control information about the PDSCH may be transmitted, but the two control information may be transmitted on one PDCCH. Further, in the above description, the control information for the different mobile stations is transmitted with different PDCCHs, but the control information for the plurality of mobile stations may be transmitted by one PDCCH.

Fig. 5 is a view showing an example of allocation of PDSCH and PUSCH in the second embodiment. In the example of FIG. 5, the PDCCH of user #1 (mobile station 200) is set in CC#1 of the downlink, and the PDCCH of user #2 (mobile station 200a) is set in CC#2, in CC#. 3 The PDCCH of user #3 is set. As described above, since the PDCCHs for the same mobile station are aggregated by one component carrier, the mobile stations 200 and 200a can narrow the range of the monitored component carriers, which is advantageous in terms of power saving. The PDCCH of the same mobile station may also be dispersed in the complex component carrier.

Further, in the example of Fig. 5, at a certain timing, PDSCHs of users #1 and #2 are set in CC#1 of the downlink, and PDSCHs of users #1 and #2 are set in CC#2. As described above, the control information of the PDSCH of the user #1 is transmitted by CC#1, and the control information of the PDSCH of the user #2 is transmitted by CC#2.

Further, at another timing, PUSCHs of users #1 and #3 are set in CC#1 of the uplink, and PUSCHs of users #2 and #3 are set in CC#2. As described above, the control information of the PUSCH of the user #1 is transmitted by CC#1 of the above-mentioned line chain, and the control information of the PUSCH of the user #2 is transmitted by CC#2, and the control information of the PUSCH of CC#3 is transmitted. Transfer by CC#3.

As such, the information transmitted by the PDCCH also includes control information about a channel in a carrier that is different from the component carrier to which the PDCCH belongs. Therefore, the mobile stations 200 and 200a can be easily specified, and the control information received by the PDCCH is preferably control information about the carrier.

Moreover, the control information about the PUSCH is, for example, a UL frame in which the PUSCH is set, and only the DL subframe transmission before the predetermined timing is advanced. Further, the control information on the PDSCH is transmitted, for example, in the same sub-frame as the DL subframe in which the PDSCH is set.

Fig. 6 is a block diagram showing a radio base station according to the second embodiment. The radio base station 100 includes an antenna 110, a radio reception unit 120, a PUSCH processing unit 130, a scheduler 140, a PDSCH generation unit 150, a PDCCH generation unit 160, and a radio transmission unit 170.

The antenna 110 is an antenna for transmitting and receiving. The antenna 110 outputs the wireless signals received from the mobile stations 200 and 200a to the wireless receiving unit 120. Further, the transmission signal obtained from the wireless transmission unit 170 is wirelessly output. Furthermore, the transmission antenna and the reception antenna may be separately provided in the radio base station 100. Further, a plurality of transmitting and receiving antennas may be provided for diversity communication.

The radio receiving unit 120 converts the received signal obtained from the antenna 110 into a baseband signal, and outputs the converted received signal to the PUSCH processing unit 130. In order to convert from a wireless signal to a baseband signal, the wireless receiving unit 120 includes, for example, a low noise amplifier (LNA), a frequency converter, a band pass filter (BPF: Band Pass Filter), and an A/D (Analog to Digital: Analog to digital converter).

The PUSCH processing unit 130 extracts the PUSCH signal from the fundamental frequency signal acquired from the radio receiving unit 120 and performs error correction decoding. At the time of decoding of the PUSCH, the radio base station 100 refers to the information of the modulation coding method notified to the mobile stations 200 and 200a by the PDCCH. Thereby, the user data or control information transmitted by the mobile station 200, 200a is captured. The PUSCH processing unit 130 outputs the control information to the scheduler 140 when the control information obtained includes information indicating that the UL radio resource is required.

Scheduler 140 manages the allocation of DL radio resources and UL radio resources. That is, when the user data sent to the mobile stations 200 and 200a reaches the buffer (not shown) provided in the radio base station 100, the scheduler 140 allocates the DL radio resources to the mobile stations 200 and 200a. Further, from the control information acquired from the PUSCH processing unit 130, the amount of user data to be transmitted by the mobile stations 200 and 200a is detected, and the UL radio resources are allocated to the mobile stations 200 and 200a. Then, the scheduler 140 notifies the PDSCH generation unit 150 and the PDCCH generation unit 160 of the scheduling result.

The PDSCH generation unit 150 extracts the user data sent to the mobile stations 200 and 200a from the buffer (not shown) included in the radio base station 100 in response to the scheduling result notified from the scheduling unit 140. Then, the user data is subjected to error correction coding to generate a PDSCH, and is output to the wireless transmission unit 170.

The PDCCH generation unit 160 generates control information about the PDSCH in response to the scheduling result regarding the DL radio resource notified from the scheduler 140. Further, control information regarding the PUSCH is generated in response to the scheduling result regarding the UL radio resource notified from the scheduler 140. Then, the PDCCH generation unit 160 generates an PDCCH by error correction coding of the control information, and outputs the PDCCH to the wireless transmission unit 170. The details of the PDCCH generation unit 160 will be described later.

The radio transmission unit 170 converts the PDSCH signal (data signal) acquired from the PDSCH generation unit 150 and the PDCCH signal (control signal) acquired from the PDCCH generation unit 160 into a radio signal and outputs it to the antenna 110. In order to convert from a fundamental frequency signal to a wireless signal, the wireless transmission unit 170 includes, for example, a D/A (Digital to Analog) converter, a frequency converter, a band pass filter, and the like.

Fig. 7 is a block diagram showing the details of the PDCCH generating unit in the second embodiment. The PDCCH generation unit 160 includes a control information generation unit 161, a parity addition unit 162, an agitation position control unit 163, a codec sequence generation unit 164, a codec unit 165, and an error correction coding unit 166.

The control information generating unit 161 generates control information on the PDSCH and the PUSCH. As described above, the control information about the PDSCH includes: the radio base station 100 is adapted to the modulation coding method of the PDSCH or the information indicating the location of the PDSCH in the DL subframe. The control information about the PUSCH includes: the mobile stations 200 and 200a should be adapted to the modulation coding method of the PUSCH or the information of the location of the PUSCH in the UL subframe. Then, the control information generating unit 161 outputs a bit string indicating the control information to the co-located adding unit 162. Moreover, the length of the bit string can be fixed or variable.

The co-location adding unit 162 generates a bit string (colocated bit) for error detection based on the bit string (information bit) obtained from the control information generating unit 161. As the error detection method, for example, CRC can be utilized. Then, the parity addition unit 162 generates a control signal to which the information bit is added with the parity bit, and outputs it to the codec unit 165.

At that time, the co-located add-on unit 162 performs the scramble processing on the co-located bit by using the scramble code sequence corresponding to the mobile station to which the control signal is transmitted. The codec sequence used is a sequence corresponding to an ID assigned in advance to each mobile station, that is, an RNTI (Radio Network Temporary Identifier). Thereby, the mobile station 200, 200a can determine whether it is a control signal sent to the station by whether or not the agitation of the parity bit can be cancelled. Moreover, the code processing of the parity bits is performed before the information bits and the parity bits are combined, or after the combination.

The codec position control unit 163 is controlled by the control signal generated by the co-location adding unit 162 to further control the interval in which the code is processed. The stitching position control unit 163 registers in advance the correspondence between the five component carriers (CC #1 to #5) and the five types of sections. The codec position control unit 163 determines that it is a control signal for the component carrier, and notifies the codec unit 165 of the interval of the codec process.

For example, when the codec position control unit 163 is a control signal for the PUSCH in the CC#1 of the uplink, the codec position control unit 163 notifies the codec unit 165 of the section corresponding to CC#1. Further, when it is the control signal of the PDSCH in the CC#2 of the downlink, the buffer unit 165 is notified of the section corresponding to CC#2.

The codec sequence generation unit 164 generates a codec sequence and outputs it to the codec unit 165. The bit length of the output code sequence can also be the same as the bit length of the control signal located in the interval of the code processing.

As an example of the agitating sequence, the following can be considered. It is also possible to use different sequences in the case of the control signal for the PDSCH and the control signal for the PUSCH.

(a) indicates the RNTI bit sequence assigned to the mobile station where the control signal is transmitted.

(b) indicates the bit sequence of the cell ID

(c) Any random sequence agreed upon in advance with the mobile stations 200, 200a

(d) A pseudo-random sequence generated by using one or both of the RNTI and the cell ID as initial values

(e) all "1" bit string

(f) "0" and "1" rotations

The codec unit 165 performs a codec process on a portion of the control signal obtained from the co-located adder 162 by using the codec sequence obtained by the self-mixing code sequence generation unit 164. Specifically, between the signal in the interval and the codec sequence, a mutually exclusive logical OR is performed for each bit, and the signal in the interval is replaced with the obtained bit string. The object range of the agitation processing is notified from the scramble code position control unit 163. Then, the control signal after the scramble processing is output to the error correction encoding unit 166. Thereby, the mobile stations 200 and 200a can specify the control signal for the component carrier by estimating the section subjected to the codec processing.

Further, the agitating process performed by the co-located adding unit 162 and the agitating process performed by the agitating unit 165 are individual processes. In the above description, after the parity bit is agitated in response to the RNTI, the code is matched with the component carrier, but in the case where the latter is only targeted by the information bit, the two codec processes are executed in an arbitrary order.

The error correction coding unit 166 acquires the control signal after the agitation processing by the agitation unit 165, and performs error correction coding. The coding of the PDCCH utilizes a predetermined coding scheme. Then, the error correction coding unit 166 outputs the generated PDCCH signal to the wireless transmission unit 170. Further, in the above description, the error correction coding is performed after the coding process is performed in the section corresponding to the component carrier, but a method in which the order of the two is reversed may be considered.

Fig. 8 is a block diagram showing a mobile station according to the second embodiment. The mobile station 200 includes an antenna 210, a radio reception unit 220, a control signal acquisition unit 230, a control signal decoding unit 240, a PDSCH acquisition unit 250, a PDSCH decoding unit 260, a PUSCH generation unit 270, and a radio transmission unit 280. The mobile station 200a can also be realized by the same configuration as the mobile station 200.

The antenna 210 is an antenna for transmitting and receiving. The antenna 210 outputs the wireless signal received from the wireless base station 100 to the wireless receiving unit 220. Further, the transmission signal obtained from the wireless transmission unit 280 is wirelessly output. Further, the transmission antenna and the reception antenna may be separately provided in the mobile station 200. Further, a plurality of transmitting and receiving antennas may be provided.

The wireless receiving unit 220 converts the received signal obtained from the antenna 210 into a baseband signal, and outputs the converted received signal to the control signal capturing unit 230 and the PDSCH capturing unit 250. In order to convert from a wireless signal to a baseband signal, the wireless receiving unit 220 includes, for example, a low noise amplifier, a frequency converter, a band pass filter, an A/D converter, and the like.

The control signal extracting unit 230 extracts a signal (a PDCCH signal candidate) that may be a PDCCH signal sent to the station from the receiving signal of the baseband signal obtained from the wireless receiving unit 220. Then, the control signal extraction unit 230 outputs the extracted PDCCH signal candidate to the control signal decoding unit 240.

The control signal decoding unit 240 performs error correction coding on the PDCCH signal candidate acquired from the control signal acquisition unit 230, and retrieves the control signal sent to the station. At that time, the control signal decoding unit 240 specifies that the captured control signal is information about the component carrier. Further, from the content of the control information, it is judged as information about which of the PDSCH and the PUSCH.

When it is the information about the PDSCH, the control signal decoding unit 240 outputs the control information to the PDSCH extraction unit 250 and the PDSCH decoding unit 260, and notifies the specified component carrier. When it is information about the PUSCH, the PUSCH generation unit 270 outputs control information and notifies the specified component carrier. The details of the control signal decoding unit 240 will be described later.

The PDSCH acquisition unit 250 extracts the PDSCH signal from the reception signal obtained as the fundamental frequency signal from the radio reception unit 220. The signal to be captured is specified by the component carrier signal notified from the control signal decoding unit 240 and the position in the sub-frame indicated by the signal obtained from the control signal decoding unit 240. Then, the PDSCH acquisition unit 250 outputs the extracted PDSCH signal to the PDSCH decoding unit 260.

The PDSCH decoding unit 260 performs the error correction decoding by acquiring the PDSCH signal from the PDSCH acquisition unit 250. At the time of decoding of the PDSCH, the modulation coding method shown by the control information obtained from the control signal decoding unit 240 is referred to. Thereby, the user data sent to the mobile station 200 transmitted by the wireless base station 100 is captured. Then, the PDSCH decoding unit 260 outputs the extracted user data to the processing unit (not shown) of the upper layer.

The PUSCH generation unit 270 generates a PUSCH signal based on the control information on the PUSCH acquired from the control signal decoding unit 240. In other words, the PUSCH generating unit 270 extracts user data from a buffer (not shown) included in the mobile station 200. Further, control information sent to the wireless base station 100 is generated. The control information generated here contains the allocation requirements of the UL radio resources. Then, the error correction coding is performed in such a manner that the user data and the control information are specified, and the PUSCH signal is generated and output to the wireless transmission unit 280. The transmission timing of the PUSCH signal is, for example, received from the control information, and only after the predetermined number of subframes is delayed.

The radio transmission unit 280 converts the PUSCH signal acquired from the PUSCH generation unit 270 into a radio signal and outputs it to the antenna 210. In order to convert from a fundamental frequency signal to a wireless signal, the wireless transmission unit 280 includes, for example, a D/A converter, a frequency converter, a band pass filter, and the like.

Fig. 9 is a view showing the details of the control signal decoding unit of the second embodiment. The control signal decoding unit 240 includes an error correction decoding unit 241, a descrambled code position control unit 242, a codec sequence generation unit 243, a descramble code unit 244, and an error detection unit 245.

The error correction decoding unit 241 acquires the PDCCH signal candidates from the control signal acquisition unit 230 and performs error correction decoding. As described above, the coding of the PDCCH utilizes a predetermined coding scheme. The error correction decoding unit 241 outputs the control signal obtained by the decoding to the descramble code unit 244.

The de-aggregation code position control unit 242 controls the section in which the de-agglomeration processing is performed, in the control signal output from the error correction decoding unit 241. The de-aggregation code position control unit 242 registers in advance the correspondence between the five component carriers (CC #1 to #5) and the five types of sections. This correspondence is the same as that of the codec position control unit 163 registered in the radio base station 100. The de-aggregation code position control unit 242 notifies the de-agglomeration code unit 244 of the section of the de-agglomeration code processing corresponding to the component carrier (component carrier candidate) in which the PDSCH or the PUSCH may be set.

Moreover, the component carrier candidates are changed depending on the communication status of the mobile station 200. For example, when it is determined that the mobile station 200 uses CC #1 to #3 instead of CC #4 and #5, only CC #1 to #3 are candidates. When there is no such limitation, all component carriers (CC#1 to #5) may be candidates.

The codec sequence generation unit 243 generates a codec sequence and outputs it to the descramble code unit 244. The codec sequence generation unit 243 generates the same codec sequence as the codec sequence generation unit 164 of the wireless base station 100. The code sequence is as described above. The bit length of the output code sequence can also be the same as the bit length of the control signal located in the interval of the code processing.

The de-aggregation code unit 244 performs a descrambling process on a portion of the control signal obtained from the error correction decoding unit 241 by the agitation code sequence obtained by the self-aggregation code sequence generation unit 243. This descrambling code processing corresponds to the reverse processing of the agitation processing performed by the agitation unit 165 of the radio base station 100. Specifically, between the signal in the interval and the codec sequence, a mutually exclusive logical OR is performed for each bit, and the signal in the interval is replaced with the obtained bit string. If the exclusive logical OR is performed twice with the same codec sequence, the original bit string can be restored. The target section of the descrambling code processing is used in any of the sections notified from the descrambled code position control unit 242. Then, the control signal after the descrambled processing is output to the error detecting unit 245.

The error detecting unit 245 performs error detection on the control signal obtained from the de-agglomerating unit 244. Specifically, the error detecting unit 245 performs deserial processing on the parity bits included in the control signal. The codec sequence used is a sequence corresponding to the RNTI that has been assigned to the mobile station 200 by the radio base station 100. Further, based on the information bit included in the control signal, the bit addition sequence is generated in the same manner as the parity addition unit 162 of the radio base station 100. Then, the generated bit string is compared with the unsigned bit and the information bit error is detected. As the error detection method, for example, a CRC can be used.

When the error detection is successful (the detection result is OK), that is, when it is determined that there is no error, the error detecting unit 245 determines that the control signal is the correct signal to be sent to the mobile station 200. Then, the co-located bit portion is discarded, and the bit string of the information bit portion is regarded as control information, and it is judged to be information about the PDSCH or about the PUSCH. In the case where the error detection is unsuccessful (the detection result is NG), that is, when it is determined that there is an error, the control signal is discarded.

There are two reasons for the failure of the error detection, in addition to the error in the wireless communication channel. One reason is the case where the control signal is not sent to the signal of the mobile station 200. In this case, even if the cosine bit is subjected to the descrambling process using the codec sequence corresponding to the RNTI of the mobile station 200, the parity bit before the codec process cannot be restored. Another reason is that the section in which the descrambling code section 244 is subjected to the descrambling code processing is different from the section in which the codec section 165 of the radio base station 100 is subjected to the agitation processing. In this case, the control signal before the jamming process cannot be restored.

Here, when the de-aggregation code position control unit 242 specifies the complex section, that is, when there are a plurality of candidates for the section in which the codec processing has been performed, the de-agglomerating code section 244 and the error detecting section 245 are for each candidate attempt. Uncoupling code processing and error detection. Then, the error detecting unit 245 specifies a section in which the descramble code processing has been performed when the error detection is passed, and specifies a component carrier corresponding to the specified section.

Further, the de-aggregation code unit 244 performs the de-agglomeration processing in parallel for the plurality of candidate sections, and outputs the control signal after the complex descrambling processing to the error detecting unit 245. Alternatively, the de-agxing code processing is performed on one candidate section, and if the control signal after the de-agglomeration processing is not qualified in the error detection, the next candidate section may be subjected to the descrambling process and sequentially executed.

Further, as described above, the radio base station 100 may perform the scramble processing corresponding to the component carrier after the error correction encoding. In this case, the mobile station 200 may perform the descrambling code processing for each candidate section before the error correction decoding. However, since the error correction coding is performed after the codec processing, it is not necessary to perform the error correction decoding for the same reception signal by the mobile station 200. Therefore, it is advantageous in suppressing the load of the mobile station 200.

Fig. 10 is a flow chart showing the transfer processing of the second embodiment. This processing is continuously performed by the wireless base station 100. The processing shown in Fig. 10 will be described below by following the step numbers.

(Step S11) The control signal generation unit 161 generates control information on the PDSCH or control information on the PUSCH.

(Step S12) The co-location adding unit 162 regards the bit string of the control information generated in step S11 as the information bit, and generates the co-located bit from the information bit in accordance with a predetermined error detecting method (for example, CRC).

(Step S13) The co-located adding unit 162 performs the scramble processing on the parity bit generated in the step S12 by using the scramble code sequence corresponding to the RNTI of the mobile station. Specifically, the exclusive OR logic OR of the parity bit and the codec sequence is calculated, and the bit string after the operation is replaced with the parity bit.

Through the above processing, the control signal including the information bit indicating the content of the control information and the parity bit processed by the RNTI is obtained.

(Step S14) The codec position control unit 163 specifies the PDSCH or PUSCH to which the control signal is applied, and is a channel set to the first component carrier. Then, a section to which the scramble processing corresponding to the specific component carrier is given is selected.

(Step S15) The codec unit 165 performs a codec process on the signals of the sections selected in the step S14 among the control signals generated in the steps S11 to S13 in a predetermined codec sequence. Specifically, the exclusive OR of the bit string and the codec sequence in the calculation interval replaces the bit sequence after the operation with the bit string in the interval.

(Step S16) The error correction coding unit 166 performs error correction coding on the control signal subjected to the codec processing in step S15 in accordance with a predetermined coding scheme, and outputs it as a PDCCH signal. The wireless transmission unit 170 converts the PDCCH signal into a wireless signal and transmits it.

In this way, the radio base station 100 registers in advance the correspondence between the complex component carrier and the interval of the plurality of different types of codec processing. Then, the interval corresponding to the component carrier of the object to which the control signal is applied is subjected to the codec processing.

Fig. 11 is a flow chart showing the receiving process of the second embodiment. This processing is continuously performed by the mobile station 200. The same processing is also performed on the mobile station 200a. The processing shown in Fig. 11 will be described below by following the step number.

(Step S21) The control signal extracting unit 230 retrieves candidates for the PDCCH signal sent to the mobile station 200. The error correction decoding unit 241 performs error correction decoding on the candidate of the PDCCH signal that is captured, and outputs it as a control signal.

(Step S22) The descrambled code position control unit 242 specifies a candidate for the component carrier associated with the control signal. Then, a candidate for the section of the agitation processing corresponding to the candidate of the specific component carrier is selected. The de-aggregation code unit 244 performs de-agglomeration processing in a predetermined agitation sequence for each candidate of the selected section. Specifically, the exclusive OR of the bit string and the codec sequence in the calculation interval replaces the bit sequence after the operation with the bit string in the interval.

(Step S23) The error detecting unit 245 performs the descrambling process on the parity bits included in the control signal by using the codec sequence corresponding to the RNTI of the mobile station 200. Specifically, the exclusive OR logic OR of the parity bit and the codec sequence is calculated, and the bit string after the operation is replaced with the parity bit.

(Step S24) The error detecting unit 245 extracts the information bit and the parity bit from the control signal after the codec processing in steps S22 and S23, and performs error detection. Then, for any control signal after the descrambling code processing, it is judged whether the error detection result is OK (determination is no error). When the detection result of any of the control signals is OK, the process proceeds to step S25. When the detection result of any of the control signals is NG, the processing is terminated.

(Step S25) The error detecting unit 245 regards the bit string of the information bit portion included in the control signal as control information, and judges whether the control information is information about the PDSCH from the content of the control information. In the case of the information about the PDSCH, the process proceeds to step S26. In the case of the information about the PUSCH, the process proceeds to step S28.

(Step S26) The error detecting unit 245 specifies a section in which the descramble code processing has been performed when the error detection result is OK. Then, the component carrier assigned to the corresponding lower row chain is specified.

(Step S27) The PDSCH acquisition unit 250 extracts the PDSCH signal from the received signal of the component carrier specified in step S26 based on the control information on the PDSCH. The PDSCH decoding unit 260 decodes the captured PDSCH signal and retrieves the user data sent to the mobile station 200.

(Step S28) The error detecting unit 245 specifies a section in which the descramble code processing has been performed when the error detection result is OK. Then, the component carrier of the uplink corresponding to the specified section is specified.

(Step S29) The PUSCH generation unit 270 generates a PUSCH signal transmitted by the component carrier specified in step S28 based on the control information on the PUSCH. The wireless transmission unit 280 converts the PUSCH signal into a wireless signal and transmits it.

In this manner, the mobile station 200 registers in advance the correspondence between the complex component carrier and the interval in which the plurality of different types of de-aggregation codes are processed. Then, for the received control signal, each of the candidates for the complex interval is subjected to the unwrapping code processing, and the interval subjected to the agitation processing is estimated from the result of the error detection. From the estimated interval, the component carrier associated with the control information can be specified. Further, as described above, the descrambling processing and the error detection for the candidates of the complex section can be performed in parallel or sequentially.

Fig. 12 is a view showing a first example of the control signal of the second embodiment. Here, the control signal after the co-location is included in the information bit of 30 bits and the parity bit of 16 bits. Moreover, the 16 bits in the information bit are subjected to the codec processing.

In the first example, the number of component carriers of the channel (PDSCH or PUSCH) to which the control signal is applied is set, and the interval of the codec processing is shifted by one bit. Between the 16-bit object of the control signal and the 16-bit code of the codec sequence, the exclusive logical OR of each bit operation.

Specifically, in the case of the control signal of CC #1, the interval of the first 16 bits (C0 to C15) is stirred. In the case of the control signal of CC#2, the code is shifted by one bit interval (C1 to C16) from the case of CC#1. Similarly, C2 to C17 are mixed in the case of the control signal of CC#3, C3 to C18 are mixed in the case of the control signal of CC#4, and the code is agitated in the case of the control signal of CC#5. C4 ~ C19.

Fig. 13 is a view showing a second example of the control signal of the second embodiment. In the second example, the number of the component carriers of the channel to which the control signal is applied is set, and the interval of the codec processing is shifted by two bits.

Specifically, in the case of the control signal of CC #1, the section (C0 to C15) of the first 16 bits is scrambled. In the case of the control signal of CC#2, the agitation code is shifted rearward by a 2-bit interval (C2 to C17) than the case of CC#1. Similarly, in the case of the control signal of CC#3, the code C4 to C19 are mixed, and in the case of the control signal of CC#4, the code C6 to C21 are mixed, and in the case of the control signal of CC#5, the code is agitated. C8 ~ C23.

Fig. 14 is a view showing a third example of the control signal of the second embodiment. In the third example, the number of component carriers corresponding to the channel to which the control signal is applied is set, and the interval of the codec processing is shifted by one bit. Among them, the difference from the first example is that it is shifted forward from the end of the information bit.

Specifically, in the case of the control signal for CC #1, the interval (C14 to C29) of the last 16 bits is scrambled. In the case of the control signal of CC#2, the agitation code is shifted forward by one bit (C13 to C28) in the case of CC#1. Similarly, in the case of the control signal for CC#3, the codes C12 to C27 are mixed, and in the case of the control signal for CC#4, the codes C11 to C26 are mixed, and in the case of the control signal for CC#5, the code is stirred. C10 ~ C25.

As described above, the five component carriers (CC #1 to #5) correspond to the assignment of the section of the codec processing, and various methods can be considered. The methods shown in Figs. 12 to 14 are merely examples. For example, the section corresponding to CC#1 is not the beginning or the end of the information bit. Moreover, the amount of the staggered interval may not be equal intervals. Further, in the methods shown in Figs. 12 to 14, the continuous section is subjected to the agitation processing, but the discontinuous section may be used. Moreover, the interval of the codec processing may also span the information bit and the parity bit.

Further, the length of the agitation section is not 16 bits, and the same length may not be used for all of CC #1 to #5. Wherein, when the coded interval is long, the mobile stations 200 and 200a can reduce the probability of erroneously detecting the component carrier. In the case of the method of FIGS. 12 to 14, when the interval of the N-bit is set, the length of the agitation section can be set within the range of the information bit length - (component carrier number - 1) × N or less.

According to the mobile communication system according to the second embodiment, the radio base station 100 can efficiently notify the mobile stations 200 and 200a of the component carriers of the PDSCH or the PUSCH to which the control signal is applied. That is, compared with the method of adding the component number of the control signal to the control signal, the consumption of the radio resource of the PDCCH can be suppressed. Further, compared with the method of allocating the RNTI to the mobile stations 200 and 200a by the number of component carriers, it is possible to suppress the RNTI from being exhausted.

Further, in the second embodiment described above, the number of the component carrier is specified from the section subjected to the codec processing, but the downlink and the uplink are not distinguished. This is because the control information can be judged as information about the PDSCH or information about the PUSCH from the content of the control information. Among them, it is also possible to distinguish between the downlink and the uplink from the interval in which the code is processed. For example, 10 types of coded intervals are prepared, and 10 component carriers can be identified one-to-one.

Further, in the second embodiment, both the control signal of the PDSCH and the control signal of the PUSCH are processed by the scrambling process to specify the component carrier. However, only one of the above processes may be performed. For example, only the control signal of the PDSCH is processed by the agitation code to process the specific component carrier, and the control information of the PUSCH may be explicitly added with the component carrier number. On the other hand, the specific component carrier can be processed by the agitation code only for the control signal of the PUSCH, and the component carrier number is explicitly added to the control information of the PDSCH.

Further, the second embodiment described above is an example of performing a codec process and a de-agglomeration process in the case of a control signal for all component carriers, but in the case of a control signal for a predetermined component carrier (for example, PDCCH) Similarly to the PDSCH, in the case of component carrier transmission, or when the number of the component carrier transmitting the PDCCH is the same as the number of the component carrier transmitting the PUSCH, the codec processing and the descrambling code processing may not be performed.

Further, the second embodiment described above is described using terms such as PDCCH, PDSCH, and PUSCH, but more generally, it may be referred to as a downlink control channel, a downlink shared channel, and an uplink shared channel. That is, the above-described wireless communication method is not limited to the applicable field, and can be applied to wireless communication other than mobile communication such as fixed wireless communication or wireless LAN. This is also the same in the following embodiments.

[Third embodiment]

Next, a third embodiment will be described. The difference from the second embodiment will be mainly described, and the description of the same matters as those of the second embodiment will be omitted. In the second embodiment, the component carrier to which the channel to which the control signal is applied is specified by the interval of the codec processing. On the other hand, in the third embodiment, the radio resource at the beginning of the channel is specified by the interval of the scramble processing.

The mobile communication system according to the third embodiment can be realized by the same configuration as that of Fig. 2. Further, the structure of the component carrier and the radio frame used for the wireless communication of the third embodiment is the same as that of the second embodiment shown in Figs. Here, the boundary between the PDCCH and the PDSCH of the DL subframe is variable.

Fig. 15 is a view showing an example of allocation of PDSCH in the third embodiment. In each DL subframe, the first symbol is allocated as the region of the PDCCH, and the remaining symbols are allocated as the region of the PDSCH. Here, the number of symbols of the area of the PDCCH differs depending on the DL subframe.

In the following description, the number of symbols in the area of the PDCCH is set to be variable within the range of 1 to 3 symbols. In the case of the fifteenth example, in the DL subframe of CC#1, two symbols are allocated to the area of the PDCCH. Therefore, the PDSCH starts from the third symbol. In the DL subframe of CC#2, the PDCCH area is allocated with 3 symbols. Therefore, the PDSCH starts from the 4th symbol. In the DL subframe of CC#3, the PDCCH area is allocated with 1 symbol. Therefore, the PDSCH starts from the second symbol.

A PCFICH (Physical Control Format Indicator CHannel) is provided in a region of the PDCCH of each DL subframe. The PCFICH transmits the number of symbols in the PDCCH region of our subframe. Therefore, the PCFICH of the DL sub-frame of CC#1 shown in Fig. 15 transmits "2". The PCFICH of the DL sub-frame of CC#2 transmits "3". The PCFICH of the DL sub-frame of CC#3 transmits "1".

The device receiving the radio frame can specify the location of the symbol to which the PDSCH is transmitted by referring to the PCFICH. However, in this method alone, when the identification of the PCFICH fails, the PDSCH signal cannot be correctly captured. Therefore, in the third embodiment, even if the identification of the PCFICH fails, the PDSCH signal can be correctly captured.

The radio base station according to the third embodiment can be realized by the same configuration as that of the radio base station 100 according to the second embodiment shown in Figs. The control of the agitating position control unit 163 is different at the above points. The mobile station according to the third embodiment can be realized by the same configuration as that of the mobile station 200 according to the second embodiment shown in Figs. The control of the de-agglomerating code position control unit 242 and the error detecting unit 245 is different at the above points. The control of the third embodiment will be described below using the same reference numerals as in the second embodiment.

Fig. 16 is a flow chart showing the transfer processing of the third embodiment. This processing is continuously performed by the wireless base station 100. The processing shown in Fig. 16 will be described below by following the step numbers.

(Step S31) The control signal generation unit 161 generates control information on the PDSCH or control information on the PUSCH. Further, in order to identify the component carrier in which the PDSCH or the PUSCH is provided, the component carrier number may be added to the control information.

(Step S32) The co-location adding unit 162 regards the bit string of the control information generated in the step S31 as the information bit, and generates the co-located bit from the information bit.

(Step S33) The parity addition unit 162 performs the codec processing on the parity bit generated in step S32 by using the codec sequence corresponding to the RNTI of the transmission destination.

Through the above processing, the control signal including the information bit indicating the content of the control information and the parity bit processed by the RNTI is obtained.

(Step S34) The codec position control unit 163 determines whether or not the control signal is a control signal for the PDSCH. In the case of the control signal for the PDSCH, the process proceeds to step S35. In the case of the control signal for the PUSCH, the process proceeds to step S37.

(Step S35) The codec position control unit 163 specifies the DL subframe of the PDSCH to which the control signal is applied, and specifies the boundary between the PDCCH region of the specified DL subframe and the PDSCH region ( That is, the beginning of PDSCH is the first symbol). Then, the interval of the scramble processing corresponding to the specific boundary is selected. Further, the stitching position control unit 163 registers in advance the correspondence between the three kinds of boundaries and the three kinds of the coded processing sections.

(Step S36) The codec unit 165 performs a codec process on the signals of the sections selected in the step S35 among the control signals generated in the steps S31 to S33 in a predetermined codec sequence.

(Step S37) The error correction coding unit 166 performs error correction coding on the control signal and outputs it as a PDCCH signal. The wireless transmission unit 170 converts the PDCCH signal into a wireless signal and transmits it.

In this manner, the radio base station 100 registers in advance the structure of the plurality of seed frames and the correspondence relationship between the plurality of different code blocks. Then, the section corresponding to the sub-frame of the PDSCH to which the control signal is applied is subjected to the scramble processing. Further, regarding the control signal of the PUSCH, the codec processing of step S36 may not be performed.

Fig. 17 is a flow chart showing the receiving process of the third embodiment. This processing is continuously performed by the mobile station 200. The same processing is also performed on the mobile station 200a. The processing shown in Fig. 17 will be described below by following the step number.

(Step S41) The control signal extraction unit 230 retrieves candidates for the PDCCH signal sent to the mobile station 200. The error correction decoding unit 241 performs error correction decoding on the candidate of the PDCCH signal that is captured, and outputs it as a control signal.

(Step S42) The descrambled code position control unit 242 specifies a candidate for the boundary between the region of the PDCCH and the region of the PDSCH. Then, candidates for the section of the de-aggregation code processing corresponding to the candidate of the specific boundary are selected. The de-aggregation code unit 244 performs de-agglomeration processing in a predetermined agitation sequence for each candidate of the selected section. Further, the decoupling code position control unit 242 registers in advance the correspondence between the three kinds of boundaries and the sections of the three kinds of decomposed code processing.

(Step S43) The error detecting unit 245 performs the descrambling process on the parity bits included in the control signal by using the codec sequence corresponding to the RNTI of the mobile station 200.

(Step S44) The error detecting unit 245 performs error detection on the control signal subjected to the descramble processing in step S43 and the control signal in which the descramble processing in step S43 is not performed. Then, for any control signal, it is judged whether the error detection result is OK. When the detection result of any of the control signals is OK, the process proceeds to step S45. When the detection result of any of the control signals is NG, the processing is terminated.

(Step S45) The error detecting unit 245 determines whether or not the control information is information about the PDSCH from the content of the control information. In the case of the information on the PDSCH, the process proceeds to step S46. In the case of the information about the PUSCH, the process proceeds to step S48. Moreover, the control information about the PDSCH is extracted from the control signal subjected to the descrambling process of step S43. The control information about the PUSCH is extracted from the control signal that has not been subjected to the descrambling process of step S43.

(Step S46) The error detecting unit 245 specifies the descrambling code section when the error detection result is OK. Then, the initial symbol of the PDSCH is specified from the specified interval.

(Step S47) The PDSCH extraction unit 250 extracts the PDSCH signal from the received signal based on the control information on the PDSCH and the start symbol specified in step S46. The PDSCH decoding unit 260 decodes the captured PDSCH signal and retrieves the user data sent to the mobile station 200. Furthermore, the PDSCH acquisition unit 250 may further confirm the start symbol of the PDSCH by referring to the information transmitted by the PCFICH in the PDCCH region.

(Step S48) The PUSCH generation unit 270 generates a PUSCH signal based on the control information on the PUSCH. The wireless transmission unit 280 converts the PUSCH signal into a wireless signal and transmits it.

In this way, the mobile station 200 registers in advance the correspondence between the plurality of seed frames and the plurality of different kinds of decomposed code intervals. Then, for the received control signal, each of the candidates for the complex interval is subjected to the unwrapping code processing, and the interval subjected to the agitation processing is estimated from the result of the error detection. The initial symbol of the PDSCH can be specified from the estimated interval.

Various methods can be considered for the method of assigning the DL sub-frame and the method of assigning the coded interval. For example, the section corresponding to CC#1 in the 12th to 14th graphs is given a correspondence when the PDCCH region is one symbol, and the interval corresponding to CC#2 is given when the PDCCH region is two symbols. Correspondingly, a method corresponding to CC#3 is assigned to the corresponding case when the PDCCH region is three symbols.

According to the mobile communication system according to the third embodiment, the radio base station 100 can efficiently notify the mobile stations 200 and 200a of the start symbols of the PDSCH to which the control signal is applied. Therefore, even if the symbol position of the PDSCH is variable in the DL subframe, the probability that the mobile station 200, 200a fails to acquire the PDSCH signal can be reduced.

[Fourth embodiment]

Next, a fourth embodiment will be described. The difference from the second and third embodiments will be mainly described, and the description of the same matters as those of the second and third embodiments will be omitted. In the fourth embodiment, the component carrier to which the channel to which the control signal is applied and the radio resource at the head of the channel are specified by the section of the codec processing.

The radio base station according to the fourth embodiment can be realized by the same configuration as that of the radio base station 100 according to the second embodiment shown in Figs. The control of the agitating position control unit 163 is different at the above points. The mobile station according to the fourth embodiment can be realized by the same configuration as that of the mobile station 200 according to the second embodiment shown in Figs. The control of the de-agglomerating code position control unit 242 and the error detecting unit 245 is different at the above points. The control of the fourth embodiment will be described below using the same reference numerals as in the second embodiment.

Fig. 18 is a flow chart showing the transfer processing of the fourth embodiment. This processing is continuously performed by the wireless base station 100. The processing shown in Fig. 18 will be described below by following the step numbers.

(Step S51) The control signal generation unit 161 generates control information on the PDSCH or control information on the PUSCH.

(Step S52) The co-location adding unit 162 regards the bit string of the control information generated in the step S51 as the information bit, and generates the co-located bit from the information bit.

(Step S53) The co-located adding unit 162 performs the scramble processing on the parity bit generated in the step S52 by using the codec sequence corresponding to the RNTI at the transmission.

Through the above processing, the control signal including the information bit indicating the content of the control information and the parity bit processed by the RNTI is obtained.

(Step S54) The codec position control unit 163 determines whether or not the control signal is a control signal for the PDSCH. In the case of the control signal for the PDSCH, the process proceeds to step S55. In the case of the control signal for the PUSCH, the process proceeds to step S56.

(Step S55) The codec position control unit 163 specifies the component carrier of the PDSCH to which the control signal is applied. Next, the DL subframe with the PDSCH is specified, and the boundary between the region of the PDCCH of the specified DL subframe and the region of the PDSCH is specified. Then, the stitching position control unit 163 selects a section to be subjected to the stitching processing corresponding to the specified component carrier and the boundary. Further, the stitching position control unit 163 registers in advance the correspondence between the boundary of the component carrier and the DL subframe and the section of the codec processing.

(Step S56) The codec position control unit 163 specifies the component carrier of the PUSCH to which the control signal is applied. Then, the interval to be subjected to the agitation processing corresponding to the specific component carrier and the boundary is selected. Further, the stitching position control unit 163 registers in advance the correspondence between the component carrier and the section of the codec processing.

(Step S57) The codec unit 165 performs a codec process on the signals of the sections selected in the step S55 or the step S56 among the control signals generated in the steps S51 to S53 in a predetermined codec sequence.

(Step S58) The error correction coding unit 166 performs error correction coding on the control signal subjected to the codec processing in step S57, and outputs it as a PDCCH signal. The wireless transmission unit 170 converts the PDCCH signal into a wireless signal and transmits it.

In this manner, when the radio base station 100 is in the control signal for the PDSCH, the radio base station 100 performs the scramble processing on the section corresponding to the configuration of the component carrier and the DL sub-frame in which the PDSCH is provided. In the case of the PUSCH control signal, the section corresponding to the component carrier in which the PUSCH is provided is subjected to the codec processing.

Fig. 19 is a flow chart showing the receiving process of the fourth embodiment. This processing is continuously performed by the mobile station 200. The same processing is also performed on the mobile station 200a. The processing shown in Fig. 19 will be described below by following the step number.

(Step S61) The control signal extracting unit 230 picks up the candidate of the PDCCH signal sent to the mobile station 200. The error correction decoding unit 241 performs error correction decoding on the candidate of the PDCCH signal that is captured, and outputs it as a control signal.

(Step S62) The descramble code position control unit 242 selects a candidate for the section of the de-agglomeration code processing. The de-aggregation code unit 244 performs de-agglomeration processing in a predetermined agitation sequence for each candidate of the selected section.

(Step S63) The error detecting unit 245 performs the descrambling process on the parity bits included in the control signal by using the codec sequence corresponding to the RNTI of the mobile station 200.

(Step S64) The error detecting unit 245 performs error detection on the control signals subjected to the descrambling process of steps S62 and S63, respectively. Then, for any control signal, it is judged whether the error detection result is OK. When the detection result of any of the control signals is OK, the process proceeds to step S65. When any of the detection results is NG, the processing is terminated.

(Step S65) The error detecting unit 245 determines whether or not the control information is information about the PDSCH from the content of the control information. In the case of the information on the PDSCH, the process proceeds to step S66. In the case of the information about the PUSCH, the process proceeds to step S68.

(Step S66) The error detecting unit 245 specifies a section of the de-agglomerated code processing when the error detection result is OK. Then, the component carrier and the start symbol of the PDSCH are specified from the specified interval. Further, the correspondence between the boundary between the component carrier and the DL subframe and the interval of the codec processing is previously registered in the descrambled code position control unit 242.

(Step S67) The PDSCH acquisition unit 250 extracts the PDSCH signal from the reception signal of the component carrier specified in step S66 based on the control information on the PDSCH and the start symbol specified in step S66. The PDSCH decoding unit 260 decodes the captured PDSCH signal and retrieves the user data sent to the mobile station 200.

(Step S68) The error detecting unit 245 specifies a section in which the descramble code processing has been performed when the error detection result is OK. Then, the component carrier is specified from the specified interval. Further, the correspondence between the component carrier and the section of the descramble code processing is registered in advance in the descrambled code position control unit 242.

(Step S69) The PUSCH generation unit 270 generates a PUSCH signal transmitted by the component carrier specified in step S68 based on the control information on the PUSCH. The wireless transmission unit 280 converts the PUSCH signal into a wireless signal and transmits it.

In this manner, the mobile station 20 attempts to decode the code for each of the candidates of the complex descrambling code section for the received control signal, and estimates the section subjected to the codec processing from the result of the error detection. In the case of the control information of the PDSCH, the component carrier to which the control signal is applied and the start symbol of the PDSCH can be specified from the estimated section. Regarding the control information of the PDCCH, the component carrier to which the control signal is applied can be specified from the estimated section.

Here, regarding the control signal applied to the PDSCH, the correspondence relationship between the component carrier and the start symbol can be identified from the interval of the codec processing. For example, in order to identify five component carriers and three symbol positions, 15 types of coded processing sections are set.

Fig. 20 is a view showing an example of a control signal in the fourth embodiment. Here, as in the example of FIGS. 12 to 14, the control signal after the co-location is included in the information bit of 30 bits and the parity bit of 16 bits. Moreover, the 16 bits in the information bit are subjected to the codec processing.

In this example, the sections of the codec processing are shifted by one bit in accordance with the combination of the five component carriers (CC#1 to #5) and the three symbol positions (positions #1 to #3).

Specifically, when CC#1‧ position #1 is indicated, the first 16-bit interval (C0 to C15) is agitated. When the CC #1‧ position #2 is displayed, the agitation code is shifted rearward by one bit (C1 to C16) from the case of CC#1‧ position #1. Similarly, when CC#5‧ position #2 is displayed, the codes C13 to C28 are mixed, and when CC#5‧ position #3 is indicated, the codes C14 to C29 are mixed.

According to the mobile communication system according to the fourth embodiment, the radio base station 100 can efficiently notify the mobile stations 200 and 200a of both the component carrier to which the control signal is applied and the start symbol of the PDSCH.

[Fifth Embodiment]

Next, a fifth embodiment will be described. The difference from the second embodiment will be mainly described, and the description of the same matters as those of the second embodiment will be omitted. In the second embodiment, the component carrier is identified by the interval of the codec processing. In the fifth embodiment, the component carrier is identified by the cyclic shift amount of the used code sequence.

The radio base station according to the fifth embodiment can be realized by the same configuration as that of the radio base station 100 according to the second embodiment shown in FIG. The PDCCH generation unit 160a described below is used instead of the PDCCH generation unit 160. The mobile station according to the fourth embodiment can be realized by the same configuration as that of the mobile station 200 according to the second embodiment shown in FIG. Here, instead of the control signal decoding unit 240, the control signal decoding unit 240a described below is used.

Fig. 21 is a view showing the details of the PDCCH generating unit in the fifth embodiment. The PDCCH generation unit 160a includes a control information generation unit 161a, a parity addition unit 162a, a codec sequence generation unit 163a, a shift amount control unit 164a, a cyclic shift unit 165a, a codec unit 166a, and an error correction coding unit 167a.

The control information generating unit 161a generates control information on the PDSCH and the PUSCH, and outputs a bit string indicating the control information to the co-located adding unit 162a.

The co-location adding unit 162a generates a parity bit for error detection based on the bit string (information bit) obtained from the control information generating unit 161a. Then, a control signal to which the information bit is attached with the parity bit is generated and output to the codec unit 166a. At that time, the parity bit is subjected to the codec processing by using the code sequence corresponding to the RNTI of the mobile station.

The codec sequence generation unit 163a generates a codec sequence and outputs it to the cyclic shift unit 165a. The generated agitated code sequence may take into account various sequences such as a fixed bit string, a random sequence, and a pseudo random sequence. Among them, in the case of cyclic shift, it is preferable that the agitation sequence of the same sequence as the original agitation sequence does not occur during the cycle of one cycle.

The shift amount control unit 164a controls the shift amount for the cyclic shift of the scramble sequence. The shift amount control unit 164a registers in advance the correspondence between the five component carriers (CC #1 to #5) and the five shift amounts that are different from each other. The shift amount can also contain "0" (no cyclic shift). The shift amount control unit 164a notifies the cyclic shift unit 165a of the shift amount corresponding to the component carrier to which the control signal is applied.

For example, when the shift amount control unit 164a is connected to the control signal of the PUSCH in the CC #1, the shift amount corresponding to the CC #1 is notified to the cyclic shift unit 165a. Further, in the case of the PDSCH control signal in CC #2, the cyclic shift unit 165a is notified of the shift amount corresponding to CC#2.

The cyclic shift unit 165a cyclically shifts the scramble sequence obtained by the self-stitching code sequence generating unit 163a only by the shift amount notified from the shift amount control unit 164a. The shift direction can also be determined arbitrarily in advance. Then, the cyclic shift unit 165a outputs the cyclically shifted agitated sequence to the agitating unit 166a.

The codec unit 166a performs a codec process on the control signal obtained from the co-located adder 162a by the codec sequence obtained from the cyclic shift unit 165a. Then, the control signal after the scramble processing is output to the error correction encoding unit 167a. Further, the agitating process performed by the co-located adding unit 162a and the scramble processing performed by the agitating unit 166a are individual processes.

The error correction coding unit 167a obtains the control signal after the agitation processing from the agitation unit 166a, and performs error correction coding. Then, the generated PDCCH signal is output to the wireless transmission unit 170.

Fig. 22 is a view showing the details of the control signal decoding unit of the fifth embodiment. The control signal decoding unit 240a includes an error correction decoding unit 241a, a codec sequence generation unit 242a, a shift amount control unit 243a, a cyclic shift unit 244a, a descramble code unit 245a, and an error detection unit 246a.

The error correction decoding unit 241a obtains the PDCCH signal candidate from the control signal acquisition unit 230, performs error correction decoding, and outputs the obtained control signal to the descrambled code unit 245a.

The codec sequence generation unit 242a generates the same codec sequence as the codec sequence generation unit 163a of the radio base station 100, and outputs it to the cyclic shift unit 244a.

The shift amount control unit 243a controls the shift amount for the cyclic shift of the scramble sequence. The shift amount control unit 243a registers in advance the correspondence between the five component carriers (CC #1 to #5) and the five shift amounts that are different from each other. This correspondence relationship is the same as the shift amount control unit 164a registered in the radio base station 100. The shift amount control unit 243a notifies the cyclic shift unit 244a of the shift amount corresponding to the component carrier in which the PDSCH or the PUSCH is likely to be set.

The cyclic shift unit 244a cyclically shifts the scramble sequence obtained from the scramble code sequence generation unit 242a only by the shift amount notified from the shift amount control unit 243a. The shift direction is the same as the cyclic shift performed by the cyclic shift unit 165a of the radio base station 100.

The de-agring code unit 245a performs the descrambling process on the control signal obtained from the error correction decoding unit 241a by the codec sequence obtained from the cyclic shift unit 244a. This descrambling code processing corresponds to the reverse processing of the agitation processing performed by the agitating unit 166a of the radio base station 100. Then, the control signal after the descrambled processing is output to the error detecting unit 246a.

The error detecting unit 246a performs error detection on the control signal obtained from the de-agring unit 245a. That is, first, the parity bit included in the control signal is subjected to the codec processing by using the codec sequence corresponding to the RNTI of the mobile station 200. Then, according to the information bit included in the control signal and the parity bit of the descrambled code, it is determined whether there is an error of the information bit.

When the shift amount control unit 243a has designated the candidate of the complex shift amount, the cyclic shift unit 244a outputs a complex scramble sequence having different shift amounts. Then, the de-agglomerating code unit 245a and the error detecting unit 246a attempt to de-agile code processing and error detection for each sequence of the complex scramble sequence. The error detecting unit 246a specifies the shift amount when the error detection result is OK, and specifies the corresponding component carrier. Further, the cyclic shift unit 244a, the descrambled code unit 245a, and the error detecting unit 246a may perform the processing in parallel or sequentially for the complex scramble sequence.

Fig. 23 is a view showing an example of the control signal of the fifth embodiment. Here, the control signal after the co-location is included in the information bit of 30 bits and the parity bit of 16 bits. In addition, all of the 30-bit information bits are subjected to the codec processing.

In this example, the 30-bit codec sequence (S0-S29) is cyclically shifted by one bit to the right corresponding to the component carrier number of the channel (PDSCH or PUSCH) to which the control signal is applied. .

Specifically, in the case of the control signal of CC #1, the original codec sequence (S0, S1, ..., S29) is used without cyclic shift. In the case of the control signal of CC#2, a codec sequence (S29, S0, ..., S28) which cyclically shifts only one bit to the right is used. Similarly, the case of the control signal of CC#3 is such that it is only cyclically shifted by 2 bits, and the case of the control signal of CC#4 is such that it is only cyclically shifted by 3 bits, and the control signal for CC#5 The case is such that it only shifts by 4 bits.

Further, the minimum unit of the cyclic shift is not set to 1 bit and may be set to 2 bits or more. In this case, in order to prevent the codec sequence from being cycled once, it is preferable to have a condition that the minimum unit of cyclic shift × (number of component carriers - 1) < the length of the coded sequence. Moreover, the interval of the codec processing may also span the information bit and the parity bit.

Moreover, only one part of the information bit may be subjected to the codec processing. In this case, it is also possible to combine with the method of the second embodiment, that is, the method of identifying the component carrier by the section of the codec processing. Thereby, more information can be notified from the wireless base station 100 to the mobile stations 200, 200a. For example, many component carriers can be identified. Further, it is also easy to notify both the component carrier and the first symbol of the PDSCH in the fourth embodiment.

Fig. 24 is a view showing a modification of the control signal of the fifth embodiment. Here, as in the example of Figs. 12 to 14, the 16 bits in the information bit are subjected to the codec processing. In this example, five component carriers (CC#1 to #5) are identified by the interval of the codec processing, and three kinds of symbol positions (positions #1 to #3) are identified by the shift amount of the coded sequence. .

Specifically, when CC #1‧ position #1 is indicated, the first 16-bit interval (C0 to C15) is coded by the uninterrupted shift code sequence. When CC#1‧ position #2 is indicated, the same interval (C0 to C15) is coded by a codec sequence after cyclically shifting by one bit. In the case of indicating CC#1‧ position #3, the same interval (C0 to C15) is coded by a codec sequence after cyclic shift of 2 bits.

When CC#2‧ position #1 is indicated, the code is shifted by a three-bit interval (C3 to C18) from the beginning in the agitation sequence without cyclic shift. When CC#2‧ position #2 is indicated, the coded sequence after cyclic shift of 1 bit is coded in the same interval (C3 to C18). In the following, all 15 kinds of code processing methods are provided in the same manner.

According to the mobile communication system according to the fifth embodiment, the same effects as those of the second embodiment can be obtained. Further, in the fifth embodiment, it is easy to lengthen the section of the jamming process, so that the probability of erroneous detection by the mobile stations 200 and 200a can be further suppressed. Further, as in the third embodiment, the method according to the fifth embodiment can be used to identify the symbol position of the PDSCH.

[Sixth embodiment]

Next, the sixth embodiment will be described. The difference from the second embodiment will be mainly described, and the description of the same matters as those of the second embodiment will be omitted. In the sixth embodiment, the component carrier is identified by the difference in the generated codec sequence.

The radio base station according to the sixth embodiment can be realized by the same configuration as that of the radio base station 100 according to the second embodiment shown in FIG. The PDCCH generation unit 160b described below is used instead of the PDCCH generation unit 160. The mobile station according to the sixth embodiment can be realized by the same configuration as that of the mobile station 200 according to the second embodiment shown in FIG. Here, instead of the control signal decoding unit 240, the control signal decoding unit 240b described below is used.

Fig. 25 is a view showing the details of the PDCCH generating unit in the sixth embodiment. The PDCCH generation unit 160b includes a control information generation unit 161b, a parity addition unit 162b, a sequence selection unit 163b, a codec sequence generation unit 164b, a codec unit 165b, and an error correction coding unit 166b.

The control information generating unit 161b generates control information on the PDSCH and the PUSCH, and outputs a bit string indicating the control information to the co-located adding unit 162b.

The co-location adding unit 162b generates a parity bit for error detection based on the bit string (information bit) obtained from the control information generating unit 161a. Then, a control signal to which the information bit is attached with the parity bit is generated and output to the codec unit 165b. At that time, the co-located bit is subjected to the codec processing by using the code sequence corresponding to the RNTI of the mobile station to which the control signal is transmitted.

The sequence selection unit 163b controls switching of the codec sequence. The sequence selection unit 163b registers in advance the correspondence between the five component carriers (CC #1 to #5) and the five types of codec sequences. The sequence selection unit 163b notifies the codec sequence generation unit 164b of the codec sequence corresponding to the component carrier to which the control signal is applied.

For example, when the sequence selection unit 163b is connected to the control signal of the PUSCH in CC#1, the sequence selection unit 163b notifies the codec sequence generation unit 164b of the codec sequence corresponding to CC#1. Further, in the case of the PDSCH control signal in CC#2, the codec sequence generation unit 164b is notified that the codec sequence corresponding to CC#2 is to be generated.

The codec sequence generation unit 164b generates a codec sequence selected by the sequence selection unit 163b in the predetermined complex code sequence, and outputs the code sequence to the codec unit 165b.

The following sequence can be considered as an example of a scramble sequence.

(a) a bit string indicating the number of the component component carrier, or repeating the bit string with the length of the agitation interval;

(b) a pseudo-random sequence generated as a function of a function of the number of the component component carrier;

(c) indicating a bit string of the difference between the number of the component component carrier and the number of the component carrier transmitting the control signal, or repeating the bit string with the length of the agitation section; and

(d) A pseudo-random sequence generated as an initial value as a function of the difference between the number of the component component carrier and the component carrier signal of the transmission control signal.

The codec unit 165b performs a codec process on the control signal obtained from the co-located adder 162b by the codec sequence obtained by the self-cohesion code sequence generation unit 164b. Then, the control signal after the scramble processing is output to the error correction encoding unit 166b. Further, the agitating process performed by the co-located adding unit 162a and the scramble processing performed by the scramble unit 165b are individual processes.

The error correction coding unit 166b acquires the control signal after the codec processing from the agitation unit 165b, and performs error correction coding. Then, the generated PDCCH signal is output to the wireless transmission unit 170.

Fig. 26 is a view showing the details of the control signal decoding unit of the sixth embodiment. The control signal decoding unit 240b includes an error correction decoding unit 241b, a sequence selection unit 242b, a codec sequence generation unit 243b, a descramble code unit 244b, and an error detection unit 245b.

The error correction decoding unit 241b acquires the PDCCH signal candidate from the control signal acquisition unit 230, performs error correction decoding, and outputs the obtained control signal to the descramble code unit 244b.

The sequence selection unit 242b controls the switching of the codec sequence. The sequence selection unit 242b registers in advance the correspondence between the five component carriers (CC #1 to #5) and the five types of codec sequences. This correspondence is the same as the sequence selection unit 163b registered in the radio base station 100. The sequence selection unit 242b notifies the codec sequence generation unit 243b of the codec sequence (the candidate for the codec sequence) corresponding to the component carrier in which the PDSCH or the PUSCH may be set.

The codec sequence generation unit 243b generates a codec sequence selected by the sequence selection unit 242b in the predetermined complex code sequence, and outputs the code sequence to the descramble code unit 244b. The set of the codec sequences that can be generated is the same as the codec sequence generation unit 164b of the radio base station 100.

The de-agglomerating code unit 244b performs the descrambling process on the control signal obtained from the error correction decoding unit 241b by the aliasing sequence obtained by the self-stitching code sequence generating unit 243b. This descramble code processing corresponds to the reverse processing of the codec processing performed by the codec unit 165b of the radio base station 100. Then, the control signal after the descrambled processing is output to the error detecting unit 245b.

The error detecting unit 245b performs error detection on the control signal obtained from the de-agglomerating unit 244b. That is, first, the parity bit included in the control signal is subjected to the codec processing by using the codec sequence corresponding to the RNTI of the mobile station 200. Then, according to the information bit included in the control signal and the parity bit of the descrambled code, it is determined whether there is an error of the information bit.

Here, when the sequence selection unit 242b selects the candidate of the complex code sequence, the code sequence generation unit 243b outputs the selected code sequence. The de-agring code unit 244b and the error detecting unit 245b attempt to de-agile code processing and error detection using the codec sequence, respectively. The error detecting unit 245b specifies a component carrier corresponding to the codec sequence when the error detection result is OK. Further, the codec sequence generating unit 243b, the descrambled code portion 244b, and the error detecting unit 245b may perform the processing for the complex codec sequence in parallel or sequentially.

Figure 27 is a view showing a first example of the control signal of the sixth embodiment. In the first example, the first 16 bits of the information bit 30 bits are subjected to the codec processing. Therefore, five kinds of 16-bit codec sequences are prepared corresponding to the five component carriers (CC#1 to #5). By setting the interval of the codec processing to one of the information bits, the circuit scale of the wireless base station 100 can be suppressed.

Specifically, in the case of the control signal of CC #1, the first 16 bits are encoded by the first sequence (S0 to S15). In the case of the control signal of CC#2, the first 16 bits are agitated by the second sequence (T0 to T15). Similarly, in the case of the control signal of CC#3, the third sequence (U0 to U15) is used for the coding, and in the case of the control signal of CC#4, the fourth sequence (V0 to V15) is used for the coding. In the case of the control signal of CC#5, the code is agitated in the fifth sequence (W0 to W15).

Moreover, the interval of the codec processing may not be the beginning of the information bit, and it may be any interval of the information bit. Further, the length of the section in which the code is processed may not be 16 bits, and all of CC #1 to #5 may be the same length. Moreover, it is also possible to perform the codec processing across the information bits and the parity bits. Also, the agitating code may treat a discontinuous interval instead of a continuous interval.

Fig. 28 is a view showing a second example of the control signal of the sixth embodiment. In the second example, the entire interval of the information bits is subjected to the coding process. Therefore, five kinds of 30-bit codec sequences are prepared corresponding to the five component carriers (CC #1 to #5). By lengthening the interval of the codec processing, the probability that the mobile stations 200, 200a mistakenly detect the component carrier can be reduced.

Specifically, in the case of the control signal of CC #1, the entire information bit is agitated in the first sequence (S0 to S29). In the case of the control signal of CC#2, the entire information bit is agitated by the second sequence (T0 to T29). Similarly, in the case of the CC#3 control signal, the third sequence (U0 to U29) is used to agitate the code, and in the case of the CC#4 control signal, the fourth sequence (V0 to V29) is used to agitate the code. In the case of the control signal of CC #5, the code is agitated in the fifth sequence (W0 to W29).

Further, when the number of the component carrier transmitting the control signal is the same as the number of the component carrier in which the PDSCH or the PUSCH is provided, the bit sequence of the all-bit "0" is used instead of the sequence corresponding to the component carrier of the latter. Also. The agitation process using the sequence of all bits "0" is equivalent to not performing the agitation process.

On the other hand, in the case of the method shown in Fig. 27, it is also possible to combine with the method of the second embodiment, that is, the method of identifying the component carrier by the section of the codec processing. Thereby, more information can be notified from the wireless base station 100 to the mobile stations 200, 200a. For example, it is also easy to notify both the component carrier and the first symbol of the PDSCH in the fourth embodiment.

Fig. 29 is a view showing a modification of the control signal of the sixth embodiment. In this example, five component carriers (CC#1 to #5) are identified by the interval of the codec processing, and three symbol positions (positions #1 to #3) are identified by the difference in the codec sequence. This allows for all 15 types of code processing methods.

Specifically, when CC #1‧ position #1 is indicated, the first 16-bit interval (C0 to C15) is agitated by the first sequence (C0 to C15). When CC#1‧ position #2 is indicated, the same sequence (C0 to C15) is stirred by the second sequence (T0 to T15). When CC#5‧ position #2 is indicated, the second sequence (T0 to T15) is coded and shifted from the beginning to the 4-bit interval (C4 to C19). When CC#5‧ position #3 is indicated, the same sequence (C4 to C19) is stirred in the third sequence (U0 to U15).

According to the mobile communication system according to the sixth embodiment, the same effects as those of the second embodiment can be obtained. Further, as in the third embodiment, the method according to the sixth embodiment can be used to identify the symbol position of the PDSCH.

[Seventh embodiment]

Next, a seventh embodiment will be described. The difference from the second embodiment will be mainly described, and the description of the same matters as those of the second embodiment will be omitted. In the seventh embodiment, the component carrier is identified by controlling the cyclic shift amount of the signal itself.

The radio base station according to the seventh embodiment can be realized by the same configuration as that of the radio base station 100 according to the second embodiment shown in FIG. The PDCCH generation unit 160c described below is used instead of the PDCCH generation unit 160. The mobile station according to the seventh embodiment can be realized by the same configuration as that of the mobile station 200 according to the second embodiment shown in FIG. Here, instead of the control signal decoding unit 240, the control signal decoding unit 240c described below is used.

Fig. 30 is a view showing the details of the PDCCH generating unit in the seventh embodiment. The PDCCH generation unit 160c includes a control information generation unit 161c, a co-location addition unit 162c, a shift amount control unit 163c, a cyclic shift unit 164c, and an error correction coding unit 165c.

The control information generating unit 161c generates control information on the PDSCH and the PUSCH, and outputs a bit string indicating the control information to the co-located adding unit 162c.

The parity addition unit 162c generates a parity bit for error detection based on the bit string (information bit) obtained from the control information generation unit 161c. Then, a control signal to which the parity bit is added to the information bit is generated and output to the cyclic shift unit 164c. At that time, the parity bit is subjected to the codec processing by using the code sequence corresponding to the RNTI of the mobile station.

The shift amount control unit 163c controls the shift amount for the cyclic shift of the control signal. The shift amount control unit 163c registers in advance the correspondence between the five component carriers (CC #1 to #5) and the five shift amounts that are different from each other. The shift amount can also contain "0" (no cyclic shift). The shift amount control unit 163c notifies the cyclic shift unit 164c of the shift amount corresponding to the component carrier to which the control signal is applied.

The following method can be considered as an example of the shift amount setting method for CC #1 to #5.

(a) The component carrier number of the object -1

(b) the number of the component carrier of the object

(c) (the component carrier number of the object -1) × N (N ≧ 2)

(d) The number of the component carrier of the object × N (N ≧ 2)

(e) The difference between the component carrier number of the object and the component carrier number of the transmission control signal

(f) The difference between the component carrier number of the object and the component carrier number of the transmission control signal × N (N ≧ 2)

The cyclic shift unit 164c cyclically shifts the signal of the predetermined section obtained from one of the control signals of the co-located adding unit 162c only by the shift amount notified from the shift amount control unit 163c. The shift direction can also be determined arbitrarily in advance. Then, the cyclic shift unit 164c outputs the cyclically shifted control signal to the error correction encoding unit 165c.

The error correction coding unit 165c obtains a control signal obtained by cyclically shifting from the cyclic shift unit 164c, and performs error correction coding. Then, the generated PDCCH signal is output to the wireless transmission unit 170.

Figure 31 is a view showing the details of the control signal decoding unit of the seventh embodiment. The control signal decoding unit 240c includes an error correction decoding unit 241c, a shift amount control unit 242c, a cyclic shift unit 243c, and an error detecting unit 244c.

The error correction decoding unit 241c obtains the PDCCH signal candidate from the control signal extraction unit 230, performs error correction decoding, and outputs the obtained control signal to the cyclic shift unit 243c.

The shift amount control unit 242c controls the shift amount for the cyclic shift of the control signal. The shift amount control unit 242c registers in advance the correspondence between the five component carriers (CC #1 to #5) and the five shift amounts that are different from each other. This correspondence relationship is the same as the shift amount control unit 163c registered in the radio base station 100. The shift amount control unit 242c notifies the cyclic shift unit 243c of the shift amount corresponding to the component carrier in which the PDSCH or the PUSCH is likely to be set.

The cyclic shift unit 243c cyclically shifts the signal of the predetermined section of the control signal obtained from the error correction decoding unit 241c by only the shift amount notified from the shift amount control unit 242c. This cyclic shift corresponds to the reverse processing of the processing performed by the cyclic shift unit 164c of the radio base station 100. That is, the shift direction is opposite to the cyclic shift portion 164c.

The error detecting unit 244c performs error detection on the control signal obtained by the cyclic shift from the cyclic shift unit 243c. That is, first, the parity bit included in the control signal is subjected to descrambling processing by using the codec sequence corresponding to the RNTI of the mobile station 200. Then, according to the information bit included in the control signal and the parity bit of the descrambled code, it is determined whether there is an error of the information bit.

When the shift amount control unit 242c specifies the candidate of the complex shift amount, the cyclic shift unit 243c and the error detecting unit 244c attempt cyclic shift and error detection for each of the complex shift amounts. The error detecting unit 244c specifies the shift amount when the error detection result is OK, and specifies the corresponding component carrier. Further, the cyclic shift unit 243c and the error detecting unit 244c may perform the processing for the complex shift amount in parallel or sequentially.

Fig. 32 is a view showing a first example of the control signal of the seventh embodiment. In the first example, the entire information bit of 30 bits is cyclically shifted. As a method of setting the shift amount for the five component carriers (CC #1 to #5), the above (a) is employed. Moreover, the parity bit is generated from the information bits before the cyclic shift.

Specifically, the case of the control signal of CC #1 is not cyclically shifted. Regarding the case of the control signal of CC#2, the information bit is cyclically shifted by one bit to the right. Similarly, the case of the control signal of CC#3 is cyclically shifted by 2 bits, and the case of the control signal of CC#4 is cyclically shifted by 3 bits, and the case of the control signal of CC#5 is cyclically shifted. Bit 4 bits.

Figure 33 is a view showing a second example of the control signal of the seventh embodiment. In the second example, the entire 16-bit information bits are cyclically shifted. As a method of setting the shift amount for the five component carriers (CC #1 to #5), the above (a) is employed. Moreover, the information bit corresponds to the co-bit before the cyclic shift.

Specifically, the case of the control signal of CC #1 is not cyclically shifted. Regarding the case of the control signal of CC#2, the parity bit is cyclically shifted by one bit to the right. Similarly, the case of the control signal of CC#3 is cyclically shifted by 2 bits, and the case of the control signal of CC#4 is cyclically shifted by 3 bits, and the case of the control signal of CC#5 is cyclically shifted. Bit 4 bits.

Moreover, the interval of the cyclic shift is not a whole of the information bit or the parity bit but may be a predetermined part of the interval. Moreover, the signal of one part of the control signal and the interval between the information bit and the parity bit may be cyclically shifted.

According to the mobile communication system according to the seventh embodiment, the same effects as those of the second embodiment can be obtained. Further, in the seventh embodiment, the component carrier can be identified without the codec processing, and the processing load and the circuit scale of the wireless base station 100 and the mobile stations 200 and 200a can be deleted. Further, as in the third embodiment, the method according to the seventh embodiment may be used to identify the symbol position of the PDSCH.

[Eighth Embodiment]

Next, the eighth embodiment will be described. The difference from the second embodiment will be mainly described, and the description of the same matters as those of the second embodiment will be omitted. In the second to seventh embodiments, the same bit is added to the end of the information bit. On the other hand, in the eighth embodiment, the position at which the parity bit is inserted is made variable so that the component carrier can be identified by the insertion position.

The radio base station according to the eighth embodiment can be realized by the same configuration as that of the radio base station 100 according to the second embodiment shown in FIG. The PDCCH generation unit 160d described below is used instead of the PDCCH generation unit 160. The mobile station according to the eighth embodiment can be realized by the same configuration as that of the mobile station 200 according to the second embodiment shown in FIG. Here, instead of the control signal decoding unit 240, the control signal decoding unit 240d described below is used.

Fig. 34 is a view showing the details of the PDCCH generating unit in the eighth embodiment. The PDCCH generation unit 160d includes a control information generation unit 161d, an insertion position control unit 162d, a parity addition unit 163d, and an error correction coding unit 164d.

The control information generating unit 161d generates control information on the PDSCH and the PUSCH, and outputs a bit string indicating the control information to the co-located adding unit 163d.

The insertion position control unit 162d controls the insertion position of the parity bit of the information bit for the control information. In the insertion position control unit 162d, the correspondence relationship between the five component carriers (CC #1 to #5) and the five different insertion positions is registered in advance. The insertion position control unit 162d notifies the parity addition unit 163d of the insertion position corresponding to the component carrier to which the control signal is applied.

As an example of the insertion position of the parity bit, the following positions can be considered.

(a) From the end of the information bit, only the number of bits corresponding to the number of the component carrier is inserted in front

(b) From the beginning of the information bit, only the digit corresponding to the number of the component carrier is inserted in the rear

The co-location adding unit 163d generates a parity bit for error detection based on the bit string (information bit) obtained from the control information generating unit 161d. Then, the generated parity bit is inserted at the position notified from the insertion position control unit 162d, and a control signal is generated and output to the error correction coding unit 164d. At that time, the parity addition unit 163d performs the codec processing on the parity bits by using the codec sequence corresponding to the RNTI of the mobile station to which the mobile station is transmitted. Moreover, the codec processing is performed before the insertion of the parity bit in the information bit, or after the insertion.

The error correction coding unit 164d obtains the control signal from the parity addition unit 163d and performs error correction coding. Then, the generated PDCCH signal is output to the wireless transmission unit 170.

Fig. 35 is a view showing the details of the control signal decoding unit of the eighth embodiment. The control signal decoding unit 240d includes an error correction decoding unit 241d, a rearrangement control unit 242d, a rearrangement unit 243d, and an error detection unit 244d.

The error correction decoding unit 241d obtains the PDCCH signal candidate from the control signal extraction unit 230, performs error correction decoding, and outputs the obtained control signal to the rearrangement unit 243d.

The rearrangement control unit 242d controls a rearrangement method of the bit order of the control signals. The rearrangement control unit 242d registers in advance the correspondence between the five component carriers (CC #1 to #5) and the five types of interpolated cells. This correspondence is integrated with the insertion method managed by the insertion position control unit 162d registered in the radio base station 100. The rearrangement control unit 242d notifies the rearrangement unit 243d that it is possible to insert a section of the same bit.

The rearrangement unit 243d cuts out the signal (which can be regarded as a co-located bit) from the section notified by the rearrangement control unit 242d from the control signal obtained from the error correction decoding unit 241d, and moves to the end. Then, the rearranged control signal is output to the error detecting unit 244d.

The error detecting unit 244d performs error detection on the control signal obtained by the rearrangement from the rearrangement unit 243d. That is, first, a predetermined number of bits (which can be regarded as co-located bits) at the end of the control signal are subjected to descrambling processing using a codec sequence corresponding to the RNTI of the mobile station 200. Then, error detection is performed based on a predetermined number of bits at the beginning of the control signal (which can be regarded as a parity bit) and a bit processed by the de-glitch code.

Here, when the rearrangement control unit 242d specifies the candidate for the complex section, the rearrangement unit 243d and the error detection unit 244d attempt rearrangement and error detection for each of the complex sections. The error detecting unit 244d specifies a section when the error detection result is OK, and specifies a corresponding component carrier. Further, the rearrangement unit 243d and the error detecting unit 244d may perform the processing for the complex shift amount in parallel or sequentially.

Fig. 36 is a view showing an example of the control signal of the eighth embodiment. In this example, a 16-bit isomorph is inserted for a 30-bit information bit. As the insertion position corresponding to the five component carriers (CC #1 to #5), the above (a) is employed.

Specifically, in the case of the control signal of CC#1, the parity bit is inserted at the end of the information bit. Regarding the control signal of CC#2, the parity bit is inserted between the third and fourth bits from the end of the information bit. Regarding the control signal of CC#3, the parity bit is inserted between the sixth and seventh bits from the end of the information bit. Regarding the control signal of CC#4, the parity bit is inserted between the ninth and tenth bits from the end of the information bit. Regarding the control signal of CC#5, the parity bit is inserted between the 12th and 13th bits from the end of the information bit.

Further, in the method of FIG. 36, the insertion positions of CC #1 to #5 are each shifted by three bits, but the amount of shift is an arbitrary number of bits or the amount of shift may not be equal intervals. Moreover, the method of FIG. 36 is inserted into the information bit without dividing the 16-bit co-located bit, but may be considered as a method of dividing into a plurality of blocks and inserting them into different positions.

Further, it is also possible to combine with the method of the seventh embodiment, that is, the method of recognizing the component carrier by the shift amount of the cyclic shift. Thereby, more information can be notified from the wireless base station 100 to the mobile stations 200, 200a. For example, it is also easy to notify both the component carrier and the first symbol of the PDSCH in the fourth embodiment.

Fig. 37 is a view showing a modification of the control signal of the eighth embodiment. In this example, five component carriers (CC#1 to #5) are identified by inserting the same bit, and three kinds of symbol positions (positions #1 to #3) are identified by the shift amount of the parity bits. ). Thereby, a combination of the insertion position of all fifteen parity bits and the cyclic shift amount of the parity bits can be prepared.

Specifically, when CC#1‧ position #1 is indicated, the same bit is added to the end of the information bit. In the case of indicating CC#1‧ position #1, the same bit is added to the end of the information bit, and the same bit is cyclically shifted by one bit to the right.

In the case of CC#5‧ position #2, the same bit is inserted between the 12th and 13th bits from the end of the information bit, and the same bit is rotated to the right by 1 Bit. In the case of CC#5‧ position #3, the same bit is inserted between the 12th and 13th bits from the end of the information bit, and the same bit is rotated to the right by 2 Bit.

According to the mobile communication system of the eighth embodiment, the same effects as those of the second embodiment can be obtained. Further, similarly to the seventh embodiment, the component carrier can be identified without the codec processing, and the processing load and circuit scale of the wireless base station 100 and the mobile stations 200 and 200a can be deleted. Further, as in the third embodiment, the method according to the eighth embodiment can be used to identify the symbol position of the PDSCH.

The foregoing merely illustrates the principles of the invention. It will be apparent to those skilled in the art that many modifications and changes can be made without departing from the scope of the invention described herein. The scope of the invention is attached to the scope of the claims and the equivalents thereof.

1, 2. . . Wireless communication device

1a. . . Signal generation department

1b. . . Transmission department

2a. . . Receiving department

2b. . . Detection department

3a, 3b, 3c, 3d. . . Wireless resource

100. . . Wireless base station

110. . . antenna

120. . . Wireless receiving unit

130. . . PUSCH processing unit

140. . . Scheduler

150. . . PDSCH generation unit

160. . . PDCCH generation unit

161. . . Control information generation department

162. . . Co-location addendum

163. . . Cogging position control unit

164. . . Stirring code generation unit

165. . . Stirring department

166. . . Error correction coding department

170. . . Wireless transmission unit

200,200a. . . Mobile station

210. . . antenna

220. . . Wireless receiving unit

230. . . Control signal acquisition unit

240. . . Control signal decoding unit

241. . . Error correction decoding unit

242. . . Cogging position control unit

243. . . Stirring code generation unit

244. . . Uncoupling code section

245. . . Error detection unit

250. . . PDSCH acquisition department

260. . . PDSCH decoding unit

270. . . PUSCH generation unit

280. . . Wireless transmission unit

160a. . . PDCCH generation unit

161a. . . Control information generation department

162a. . . Co-location addendum

163a. . . Stirring code generation unit

164a. . . Shift amount control unit

165a. . . Cycle shifting

166a. . . Stirring department

167a. . . Error correction coding department

240a. . . Control signal decoding unit

241a. . . Error correction decoding unit

242a. . . Stirring code generation unit

243a. . . Shift amount control unit

244a. . . Cycle shifting

245a. . . Chaos code department

246a. . . Error detection unit

160b. . . PDCCH generation unit

161b. . . Control information generation department

162b. . . Co-location addendum

163b. . . Sequence selection unit

164b. . . Stirring code generation unit

165b. . . Stirring department

166b. . . Error correction coding department

240b. . . Control signal decoding unit

241b. . . Error correction decoding unit

242b. . . Sequence selection unit

243b. . . Stirring code generation unit

244b. . . Uncoupling code section

245b. . . Error detection unit

160c. . . PDCCH generation unit

161c. . . Control information generation department

162c. . . Co-location addendum

163c. . . Shift amount control unit

164c. . . Cycle shifting

165c. . . Error correction coding department

240c. . . Control signal decoding unit

241c. . . Error correction decoding unit

242c. . . Shift amount control unit

243c. . . Cycle shifting

244c. . . Error detection unit

160d. . . PDCCH generation unit

161d. . . Control information generation department

162d. . . Insert position control

163d. . . Co-location addendum

164d. . . Error correction coding department

240d. . . Control signal decoding unit

241d. . . Error correction decoding unit

242d. . . Rearrangement control

243d. . . Rearrangement

244d. . . Error detection unit

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

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

Fig. 3 is a view showing an example of setting a component carrier in the second embodiment.

Fig. 4 is a view showing a configuration example of a radio frame of the second embodiment.

Fig. 5 is a view showing an example of allocation of PDSCH and PUSCH in the second embodiment.

Fig. 6 is a block diagram showing a radio base station according to the second embodiment.

Fig. 7 is a block diagram showing the details of the PDCCH generating unit in the second embodiment.

Fig. 8 is a block diagram showing a mobile station according to the second embodiment.

Fig. 9 is a view showing the details of the control signal decoding unit of the second embodiment.

Fig. 10 is a flow chart showing the transfer processing of the second embodiment.

Fig. 11 is a flow chart showing the receiving process of the second embodiment.

Fig. 12 is a view showing a first example of the control signal of the second embodiment.

Fig. 13 is a view showing a second example of the control signal of the second embodiment.

Fig. 14 is a view showing a third example of the control signal of the second embodiment.

Fig. 15 is a view showing an example of allocation of PDSCH in the third embodiment.

Fig. 16 is a flow chart showing the transfer processing of the third embodiment.

Fig. 17 is a flow chart showing the receiving process of the third embodiment.

Fig. 18 is a flow chart showing the transfer processing of the fourth embodiment.

Fig. 19 is a flow chart showing the receiving process of the fourth embodiment.

Fig. 20 is a view showing an example of a control signal in the fourth embodiment.

Fig. 21 is a view showing the details of the PDCCH generating unit in the fifth embodiment.

Fig. 22 is a view showing the details of the control signal decoding unit of the fifth embodiment.

Fig. 23 is a view showing an example of the control signal of the fifth embodiment.

Fig. 24 is a view showing a modification of the control signal of the fifth embodiment.

Fig. 25 is a view showing the details of the PDCCH generating unit in the sixth embodiment.

Fig. 26 is a view showing the details of the control signal decoding unit of the sixth embodiment.

Figure 27 is a view showing a first example of the control signal of the sixth embodiment.

Fig. 28 is a view showing a second example of the control signal of the sixth embodiment.

Fig. 29 is a view showing a modification of the control signal of the sixth embodiment.

Fig. 30 is a view showing the details of the PDCCH generating unit in the seventh embodiment.

Figure 31 is a view showing the details of the control signal decoding unit of the seventh embodiment.

Fig. 32 is a view showing a first example of the control signal of the seventh embodiment.

Figure 33 is a view showing a second example of the control signal of the seventh embodiment.

Fig. 34 is a view showing the details of the PDCCH generating unit in the eighth embodiment.

Fig. 35 is a view showing the details of the control signal decoding unit of the eighth embodiment.

Fig. 36 is a view showing an example of the control signal of the eighth embodiment.

Fig. 37 is a view showing a modification of the control signal of the eighth embodiment.

1, 2. . . Wireless communication device

1a. . . Signal generation department

1b. . . Transmission department

3a. . . Wireless resource #1

3b, 3c, 3d. . . Wireless resource #2

2a. . . Receiving department

2b. . . Detection department

Claims (20)

A wireless communication device that transmits a signal for processing by a wireless communication device to any of a plurality of second wireless resources by using a first radio resource, and includes: a signal generation unit for generating The first signal processed by the other wireless communication device and the second signal for error detection of the first signal are generated, and the first signal and the second signal are generated, and a part of the interval signal is performed. And a third signal generated by the codec processing; and the transmitting unit is configured to transmit the third signal generated by the first radio resource; and the signal generating unit is selected from the plurality of inter-subjects corresponding to the plurality of second radio resources The section corresponding to the second radio resource of the target of the processing of the first signal is used, and the above-mentioned codec processing is performed on the signal of the selected section. The wireless communication device of claim 1, wherein the plurality of second wireless resources belong to radio resources of different frequency bands. The wireless communication device according to claim 1, wherein the plurality of second radio resources are located in a radio resource at the beginning of the target channel in which the first signal is processed. The wireless communication device according to any one of claims 1 to 3, wherein the signal generating unit performs error correction encoding on the third signal after the stitching process; and the transmitting unit transmits the error correction code. The third signal mentioned above. The wireless communication device of claim 1, wherein the signal generating unit divides the second signal from the object of the aforementioned agitation processing outer. The wireless communication device of claim 1, wherein the signal generating unit performs another codec processing on the second signal by using a codec sequence selected by the other wireless communication device transmitted by the third signal. . The wireless communication device of claim 1, wherein the plurality of second radio resources are wireless resources for data transmission; and the transmission unit is configured by the plurality of second radio resources and the interval in which the agitation processing has been performed. Corresponding to the second wireless resource, the data sent to the other wireless communication device is transmitted. The wireless communication device of claim 1, wherein the plurality of second radio resources are wireless resources for receiving data; and further comprising a receiving unit that performs the agitation in the second radio resource The second wireless resource corresponding to the code processing interval receives data from the other wireless communication device. A wireless communication device that transmits a signal for processing by a wireless communication device to any of a plurality of second wireless resources by using a first radio resource, and includes: a signal generation unit for generating And the first signal processed by the other wireless communication device and the second signal used for error detection of the first signal, and generating the first signal and the second signal, and at least the first signal a third signal subjected to the codec processing; and a transmitting unit that transmits the third signal generated by the first radio resource; The signal generating unit performs the above-described codec processing by using a codec sequence corresponding to the second radio resource to be processed by the first signal in the complex codec sequence corresponding to the plurality of second radio resources. . The wireless communication device of claim 9, wherein the plurality of codec sequences are obtained by cyclically shifting the predetermined codec sequence by only the number of different bits. The wireless communication device of claim 9 or 10, wherein the signal generating unit performs another stirring on the second signal by using a coding sequence selected by the other wireless communication device according to the transmission of the third signal. Code processing. A wireless communication device that transmits a signal for processing by a wireless communication device to any of a plurality of second wireless resources by using a first radio resource, and includes: a signal generation unit for generating a first signal processed by the other wireless communication device and a second signal used for error detection of the first signal, and generating at least a part of the signal sequence including the first signal and the second signal a third signal in which the bit order is replaced; and a transmitting unit that transmits the third signal generated by the first radio resource; and the signal generating unit is in accordance with the plurality of second radio resources and different numbers In the replacement method, the bit order is replaced with a replacement method corresponding to the second radio resource to which the processing of the first signal is performed. The wireless communication device of claim 12, wherein the plurality of replacement methods are only cyclically shifted by mutually different number of bits; the signal generation unit is configured to at least one of the first signal and the second signal The shift is only shifted by the number of bits corresponding to the second radio resource of the object to be processed. The wireless communication device of claim 12, wherein the plural replacement method is a method of inserting the second signal at a position different from the first signal; and the signal generation unit is the object of the processing 2 The second signal is inserted at a position in the first signal corresponding to the radio resource. A wireless communication device, comprising: a receiving unit configured to receive a third signal from another wireless communication device by using a first wireless resource, the third signal including a process for processing any one of the plurality of second wireless resources a signal and a second signal for error detection of the first signal, and a signal of a part of the interval is subjected to a codec processing; and a detecting unit is for each interval of the complex number interval corresponding to the plurality of second wireless resources And performing the de-agglomeration processing on the received third signal, and detecting the second radio resource corresponding to the section in which the result of the error detection after the de-glitching processing is in accordance with a predetermined condition, as the processing using the first signal Object. A wireless communication device, comprising: a receiving unit configured to receive a third signal from another wireless communication device by using a first wireless resource, the third signal including processing for processing any one of the plurality of second wireless resources a first signal, and a second signal for error detection of the first signal, and at least one of the first signals is subjected to a codec And detecting, wherein the received third signal is subjected to de-agglomeration processing using each sequence of the plurality of complex wireless code sequences corresponding to the plurality of second radio resources, and detecting and decoding the descrambled code The result of the error detection is in accordance with the second radio resource corresponding to the coding sequence of the predetermined condition, and is used as the target of the processing of the first signal. A wireless communication device comprising: a receiving unit configured to receive, by a first wireless resource, a first signal including processing for any one of a plurality of second wireless resources from another wireless communication device, and a third signal in which the bit order is replaced in at least a part of the signal sequence of the second signal of the error detection of the first signal; and a detecting unit that is different from the second wireless resource corresponding to the plurality of radio resources Each method of the plurality of rearrangement methods rearranges the bit order of the received third signal, and detects the second radio resource corresponding to the rearrangement method of the predetermined condition after the rearrangement of the error detection is used as the second radio resource The object of the processing of the first signal. A wireless communication method, wherein the first wireless resource and the plurality of second wireless resources are used between the first wireless communication device and the second wireless communication device; and the second wireless resource is generated for the plurality of second wireless resources The first signal processed by either of the first signal and the second signal used for error detection of the first signal; generating a third signal, the third signal including the first signal and the second signal, and corresponding The second wireless of the plurality of second radio resources and the mutually different complex interval, and the target of the processing using the first signal The signal corresponding to the section corresponding to the resource is subjected to the codec processing; the third signal is transmitted by the first radio resource; and the received third signal is subjected to de-agglomeration processing for each section of the complex section, and the foregoing untwisting is detected The result of the error detection after the code processing is in accordance with the second radio resource corresponding to the section of the predetermined condition, and the processing of using the first signal is performed on the detected second radio resource. A wireless communication method, wherein the first wireless resource and the plurality of second wireless resources are used between the first wireless communication device and the second wireless communication device; and the second wireless resource is generated for the plurality of second wireless resources The first signal processed by any one of the first signal and the second signal used for error detection of the first signal; generating a third signal, wherein the third signal includes the first signal and the second signal, and the corresponding signal has been utilized In the complex codec sequence of the plurality of second radio resources and different from each other, at least one of the first signals is subjected to a codec processing in a codec sequence corresponding to the second radio resource to be processed by the first signal. Transmitting the third signal by using the first radio resource; performing de-sampling processing on the received third signal by using each sequence of the complex scramble sequence, and detecting the result of the error detection after the descramble code processing The second radio resource corresponding to the sequence of the code that meets the predetermined condition; and the process of using the first signal for the detected second radio resource. A wireless communication method, characterized in that it utilizes a first wireless resource a source and a plurality of second radio resources are performed between the first wireless communication device and the second wireless communication device; generating a first signal for processing the any of the plurality of second wireless resources, and for using the first signal The second signal of the error detection of the first signal; generating a third signal, wherein the third signal includes the first signal and the second signal, and the multiplicative replacement method corresponding to the plurality of second radio resources is used And a replacement method corresponding to the second radio resource to be used in the processing of the first signal, the bit of the signal in at least part of the interval is sequentially replaced; and the third signal is transmitted by the first radio resource; Each of the methods of the complex rearrangement method of the complex replacement method rearranges the bit order of the received third signal, and detects the second wireless resource corresponding to the rearrangement method of the predetermined condition after the rearrangement of the error detection result; The processing of using the first signal is performed on the detected second radio resource.