Wireless communication system, communication control method, wireless station, and recording medium

As for this invention, especially, radio station rises at least autonomously in regard to the radio communication system which includes radio station, the radio communication system which does the radio resource management of the circuit, communications control method, regards radio station, and record medium.

The portable telephone is advanced to be wide the recent years when it has spread, at the interior development of the base station for home which is installed in the interior attendant upon the increase of demand for speech communication and data communication. As an operational form of base station for this kind of home, only the mobile station which is registered beforehand connecting to the base station for home, doing communication is examined. The range which base station for home covers, quite from small thing, is called the femto- cell with the base station which is installed in the outside (below, calling macro base station,) in comparison. Then, at below, base station for home is called femto- base station.

The femto- base station and base station in the existing portable communication network transmits the common pilot signal. The mobile station doing synchronous establishment and channel presumption etc, by receiving that common pilot signal, establishes the circuit, does the sending and receiving of the data with base stations. Because of this, to try to be able to receive the common pilot signal with satisfactory reception quality, in the mobile station, it is necessary in order to offer satisfactory communication quality.

In addition, as the data transmission from base station in the descent circuit to the mobile station accelerates, also the data transmission from the mobile station in the rising circuit to base station has accelerated. In order to achieve the acceleration of data transmission of the rising circuit, total value of received power of all channel in base station (RTWP; The Received Total Wideband POWER) the technology which assures the largest conversion of data transmission speed with the transmission electric power of the mobile station as maximum, is known in the range where it is below specified set point. The set point of RTWP is set fixed at each base station.

Like above as for femto- base station, using in the system of WCDMA (Wideband Code Division Multiple Access) and E-UTRAN (Enhanced UMTS Terrestrial Radio Access Network) etc is examined. With WCDMA, as stated in non patent literature 1, it rises and the circuit the transmission electric power in the descent circuit the data transmission which uses the common channel in the data transmission and descent which use the individual channel which is controlled circuit is done. In addition, with E-UTRAN, way it is stated in non patent literature 2, zone of Radio Frequency plural resource blocks (PRB; Physical Resource Block) it is divided. And, data transmission with the mobile stations is done making use of PRB where the scheduler which is prepared for the base station of E-UTRAN does the allotment of PRB, as for base station is allotted.&lt;br /&gt;<nplcit num="1"><text>3GPP TS 25.214 V7.3.0 (2006-12) and 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Physical layer procedures (FDD) (Release 7)</text></nplcit><nplcit num="2"><text>3GPP TS 36.300 V8.1.0 (2007-06) and 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)</text></nplcit>

<p> One example of the system which is formed from macro base station and femto- base station is shown in Figure 8. With example in Figure 8, inside macro cell 801 where macro base station 81 forms, femto- base station 82A and 82B exist. Femto- base station 82A and 82B, form respective femto- cell 802A and 802B. Femto- base station 82A is categorized to the vicinity of macro base station 81, femto- base station 82B is categorized near the cell edge of macro cell 801. Mobile station 91A and 91B, do respective femto- base station 82A, 82B and communication, mobile station 91C and 91D together macro base station do 81 and communication. Mobile station 91C moves the vicinity of macro base station, mobile station 91D is moving near the cell edge of macro cell 801.</p><p> At below, goal RTWP of femto- base station 82A and 82B you analyze concerning the communication quality of the rising circuit in, each of femto- base station 82A when together it sets to the same as macro base station 81 and 82B. Furthermore, the analysis which is expressed below is something which the inventors of long-cherished desire did in order to examine the problematical point of the femto- base station which is expressed with background technology is not the contents which are disclosed in the known literature and the like.</p><p> Femto- base station 82A rises from the mobile station 91C which moves the vicinity mainly and receives interference. Here, it rises and interference, it means the interference for the rising circuit which from the mobile station faces to base station. But, as for mobile station 91C, because the vicinity of macro base station 81 is being moved, as for transmission electric power of mobile station 91C, relatively it becomes small in comparison with when it is categorized near the cell edge of macro cell 801. Therefore, as for the interference which femto- base station 82A receives from mobile station 91C because it is small relatively, RTWP of femto- base station 82A is held down within set point. Because of this, communication quality of the rising circuit in femto- base station 82A does not deteriorate.</p><p> On the one hand, femto- base station 82B rises from the mobile station 91D which moves the vicinity mainly and receives interference. As for mobile station 91D, because long way of macro base station is being moved, as for transmission electric power of mobile station 91D relatively it becomes large. Therefore, the interference which femto- base station 82B receives from mobile station 91D is considerable the times when it becomes large, there is a possibility RTWP of femto- base station 82B exceeding set point frequently. Because of this, femto- base station 82B and the mobile station 91B which does communication not be able to utilize transmission electric power in the maximum, the rising circuit communication quality in femto- base station 82B deteriorates. For example, data transmission speed of rising direction of mobile station 91B decreases substantially.</p><p> Next, you analyze concerning the communication quality of the rising circuit in, each of femto- base station 82A when target received power RTWP_target of femto- base station 82A and 82B is set together largely and 82B. This time, because goal RTWP of femto- base station 82A is high excessively, there are times when transmission electric power of mobile station 91A becomes excessively large over. As a result, when interference to macro base station 81 increases from mobile station 91A, macro base station communication quality of mobile station 91C and 91D which do 81 and communication deteriorates. On the one hand, because can allow the rising interference from of mobile station 91D goal RTWP becomes high about, to make the frequency where RTWP exceeds set point small it is possible femto- base station 82B. As a result, femto- base station 82B and the mobile station 91B which does communication be able to convert transmission electric power maximally, communication quality does not deteriorate.</p><p> As expressed above, with the former method of setting the goal RTWP of femto- base station fixed not to depend on the position inside macro cell of femto- base station, there is a topic that inside macro cell of femto- base station the femto- base station which is due to the interference to the femto- cell from macro cell depending upon position, deterioration of communication quality between the mobile stations which are connected to this, it causes the increase of interference to macro cell from the femto- cell.</p><p> As for this invention, being something which you can do on the basis of the above-mentioned knowledge, as for purpose of this invention, while holding down the interference to macro cell from the femto- cell not to depend on the position inside macro cell of femto- base station, there are times when it offers satisfactory communication quality in inside the femto- cell. When from you express generally, as for purpose of this invention, being located inside the large-scale cell, while radio station and communication between the mobile stations holding down the interference which it causes to the large-scale cell not to depend on the position inside the large-scale cell of the radio station which does communication with the mobile stations, the radio communication system which can offer satisfactory communication quality to radio station and between the mobile stations, communications control method, there are times when the control supervisor of radio station, and radio station is offered.</p>

<p> The radio communication system which depends on the 1st feature of this invention has first base station and radio station. The aforementioned first base station transmits the first pilot signal in inside the first cell which is formed personally. The aforementioned radio station, as it communicates with the mobile stations, sets the target received power of the aforementioned rising data which is used for the control of transmission electric power of the rising data by the aforementioned mobile station on the basis of the reception quality of the aforementioned first pilot signal.</p><p> It is the communications control method in the radio station where 2nd feature of this invention with first base station is used with the radio communication system, does the radio communication with the mobile station. Particular method (1) inputs the measurement result of reception quality of the pilot signal which is transmitted from the aforementioned first base station, features that target received power of the aforementioned rising data which is used for the control of transmission electric power of the rising data by the aforementioned mobile station (2) on the basis of the reception quality of the aforementioned pilot signal, is set.</p><p> 3rd feature of this invention with first base station is used with the radio communication system, being the radio station which does the radio communication with the mobile station, has with the control data setting expedient which sets the target received power of the aforementioned rising data which is used for the control of transmission electric power of the rising data by the aforementioned mobile station on the basis of the reception quality of the pilot signal which is transmitted from radio sending and receiving expedient and the aforementioned first base station which do the communication with the aforementioned mobile station.</p><p> There is the radio station control supervisor which makes the control processing regarding the radio station where 4th feature of this invention with first base station is used with the radio communication system, does the mobile station and communication the computer execute. Here, the aforementioned control processing includes with the processing which sets the target received power of the aforementioned rising data which is used for the control of transmission electric power of the rising data by the aforementioned mobile station on the basis of the reception quality of processing and the aforementioned pilot signal which input the measurement result of reception quality of the pilot signal which is transmitted from the aforementioned first base station.</p>

<p> It can decide according to each feature of this invention which it mentions, target received power of the rising data from the mobile station according to the reception quality of the pilot signal which is transmitted from first base station. Because of this, for example, when the radio station in each feature of this invention which is mentioned is femto- base station, when reception level of the pilot signal from the macro base station where femto- base station is categorized to the vicinity of macro base station, in the femto- cell is large, the fact that transmission electric power of the mobile station which is communicated with femto- base station by lowering the target received power of femto- base station, becomes high can be controlled. In addition, for example, femto- base station it can be located distantly considered as macro base station, when reception level of the pilot signal from the macro base station in the femto- cell is small, it can evade the decrease of data transmission speed of the mobile station by increasing the target received power of femto- base station.</p><p> Therefore, according to this invention, being located inside the large-scale cell, while radio station and communication between the mobile stations holding down the interference which it causes to the large-scale cell not to depend on the position inside the large-scale cell of radio station such as the small-scale base station which does communication with the mobile stations, it can offer satisfactory communication quality to radio station and between the mobile stations.</p>

<figref num="1">Form of execution of this invention - 4 the constitution of radio communication system it is the figure which shows 1. </figref><figref num="2">Form of execution of this invention and 2 it is the figure which shows the constitution of macro base station of 1. </figref><figref num="3">Form of execution of this invention - 4 the constitution of femto- base station it is the figure which shows 1. </figref><figref num="4">Form of execution of this invention - 4 the constitution of mobile station it is the figure which shows 1. </figref><figref num="5">Form of execution of this invention and 3 it is the flow figure which shows the setting procedure of the target received power in the femto- base station of 1. </figref><figref num="6">Form of execution of this invention and 4 it is the figure which shows the constitution of macro base station of 3. </figref><figref num="7">It is the figure which shows the constitution of the mobile station of form 5 of execution of this invention. </figref><figref num="8">It is the system configuration figure in order to explain topic.</figref>

Explanation of mark

1 macro gate way devices&lt;br /&gt; 2 femto- gate way devices&lt;br /&gt; 3 macro base stations&lt;br /&gt; 4 femto- base stations&lt;br /&gt; 5 macro cells&lt;br /&gt; 6 femto- cells&lt;br /&gt; 71 - 74 mobile station&lt;br /&gt; 10 networks&lt;br /&gt; 30 antennas&lt;br /&gt; 31 radio sending and receiving sections&lt;br /&gt; 32 reception data processing sections&lt;br /&gt; 33 transmit data processing sections&lt;br /&gt; 34 wire sending and receiving sections&lt;br /&gt; 35 radio network control sections&lt;br /&gt; 36 mobile station mode reception sections&lt;br /&gt; 37 radio network control data setting sections

Next, referring to the plan concerning the form of execution of this invention, you explain in detail.&lt;br /&gt; Figure 1 form is the block diagram to which the radio communication system of form 4 of 1 of execution of this invention - execution is in common. This radio communication system, macro gate way device 1, femto- gate way device 2, macro base station 3, femto- base station 4, macro cell 5, the femto- cell includes 6, and the mobile station 71 - the 74.

Macro base station 3 and femto- base station 4, each macro cell 5, forms the femto- cell 6. Macro base station 3 communicates with the mobile station 71, femto- base station 4 communicates with the mobile station 72. Macro base station in case of plural there is, a cell where each of 3 and femto- base station 4 forms, but for simplifying the explanation, with form of this execution, you explain as each each one. In addition, the cellular communication system which depends on the form of this execution, many macro base station and femto- base station the macro cell which corresponds to these, includes the femto- cell, and the mobile station other than those which are shown in Figure 1, but it abbreviates illustration.

Macro gate way device 1 is connected macro base station 3. Femto- gate way device 2 is connected femto- base station 4. As and as for these gate way devices 1 and 2, also superior network 10 is connected, superior network controls the communication with the mobile station 71 - the 74 where exists inside the cell of base station of 10 and the subordinate, it transfers information.

Everything of the mobile station 71 - the 74 has been permitted connection in macro base station 3. On the one hand, the identifier only of the mobile station 72 - the 74 is registered by femto- base station 4, is permitted connection only the mobile station 72 - the 74 as a register end mobile station.

In order to permit connection in only for the mobile station of specification, femto- base station 4 as cell identification number information is transmitted making use of the common control channel, transmits the information of the connection restriction which shows the fact that it is the cell where permits connection in only the mobile station of specification. On the one hand, the mobile station 72 - the 74 keep the cell identification number information of the cell where connection is permitted. And, as for the mobile station 72 - the 74, when information of connection restriction and cell identification number is transmitted in the femto- cell 6, the cell identification number which is transmitted, when it matches the cell identification number which has been kept, connects that cell as cell selective candidacy.

Macro base station 3 and femto- base station 4 does the mobile station and communication making use of identical Radio Frequency. And, macro base station 3 descends in macro cell 5, the common pilot channel of the circuit (CPICH; The pilot signal is transmitted by fixed transmission electric power Common Pilot Channel) with. On the one hand, femto- base station 4 sets the transmission electric power of the common pilot signal autonomously, transmits the common pilot signal with CPICH in the femto- cell 6.

In addition, macro base station each of 3 and femto- base station 4 descends and descends making use of the data channel and transmits the data to the mobile station, rises and rises from the mobile station making use of the data channel and receives the data.

At the time of receiving the rising data of femto- base station 4, data transmission speed is controlled making use of the target received power RTWP_target in femto- base station 4. In other words, it is the parameter which is utilized at the time of transmission power control which decides the transmission electric power of the mobile station where target received power RTWP_target rises and in the circuit, as standard.

Each of the mobile station 72 - the 74 starts data transmission at fixed data transmission speed, as for femto- base station 4, measures RTWP as a total value of the received power in femto- base station 4 while receiving the rising data from the mobile station 72 - the 74. If and, as for femto- base station 4, the RTWP is smaller than RTWP_target, if increase of data transmission speed is indicated vis-a-vis the mobile station 72 - the 74 and that RTWP is larger than RTWP_target, decrease of data transmission speed is indicated vis-a-vis the mobile station 72 - the 74. On the one hand, while the mobile station 72 - the 74, you follow to the indication and increasing and decreasing data transmission speed, in order for transmission electric power per information bit to become fixed, increasing and decreasing transmission electric power, you do data transmission. Due to this kind of control, femto- base station 4, while RTWP that to try does not exceed RTWP_target largely, rises at maximum speed and it is possible to do data reception. You explain the setting method of RTWP_target as a radio parameter, in detail in the form of execution below.

Furthermore, with form of this execution, it rises and adopts the FDD (Frequency Division Duplex) system which uses the Radio Frequency which differs from the circuit with the descent circuit, but it rises and the circuit you can adopt the TDD (Time Division Duplex) system which uses identical Radio Frequency timewise separately with the descent circuit, can execute this invention in the same way.

Furthermore, with form of this execution, being consistent, you explain concerning the radio communication system which includes macro base station and femto- base station, but macro base station to be larger than femto- base station such as micro base station or pico- base station replacing with the other base station which is smaller than macro base station, it can execute this invention in the same way. In addition, femto- base station, replacing with other base station such as micro base station or the pico- base station which is smaller than macro cell of superior class, it can execute this invention in the same way.

[Form 1 of execution]&lt;br /&gt; The radio communication system which depends on the form of this execution may adopt whatever system to communication method with base station and the mobile station, but with form 1 of execution, CDMA system is adopted as a radio access method, macro base station 3, femto- base station each of 4 and the mobile station 71 - the 74, spreading, the transmission signal transmits information in specified Radio Frequency zone. In addition, in macro gate way device 1 of form 1 of execution, radio network control control equipment (Radio Network Controller; RNC) function is added. Because of this, macro gate way device 1 notifies the Radio Frequency of the macro cell 5 which is set beforehand vis-a-vis macro base station 3, and the transmission electric power etc of the common pilot signal.

Figure 2 is the figure which shows one example of constitution of macro base station 3. When Figure 2 is referred to, macro base station 3 of form of this execution, antenna 20, radio sending and receiving section 21, reception data processing section 22, transmit data processing section has 23, and wire sending and receiving section 24.

Radio sending and receiving section 21, through wire sending and receiving section 24 from macro gate way device 1, receives the notification of Radio Frequency of macro cell, 5 and transmission electric power etc of the common pilot signal does the transmission of the common pilot signal on the basis of that notification. In addition, radio sending and receiving section 21, wire sending and receiving section through 24 and transmit data processing section 23, descending from macro gate way device 1 and receiving the data, through antenna 20, directing to the mobile station 71 it transmits. In addition, radio sending and receiving section 21, through antenna 20, rises from the mobile station 71 and receives the data, reception data processing section through 22 and wire sending and receiving section 24, sends to macro gate way device 1.

Figure 3 is the figure which shows one example of constitution of femto- base station 4. When Figure 3 is referred to, femto- base station 4 of form of this execution, antenna 30, radio sending and receiving section 31, reception data processing section 32, transmit data processing section 33, wire sending and receiving section 34, radio network control section 35, mobile station mode reception section has 36, and radio network control data setting section 37.

Mobile station mode reception section 36, through antenna 30, measures the received power P_macro of the pilot signal which is transmitted in macro cell 5.

Radio network control data setting section 37 receives the notification of the common pilot signal received power P_macro which mobile station mode reception section 36 measured, the transmission electric power of the common pilot signal due to femto- base station 4 and the target received power RTWP_target in rising data receiving from the mobile station 72 - the 74 decides. If concretely, adding specified electrical offset value to P_macro, it should have decided transmission electric power of the common pilot signal. Transmission electric power of the common pilot signal which it decides the target received power RTWP_target in rising data receiving is sent to radio network control section 35.

Radio network control section 35 of form of this execution has had the function of RNC, the Radio Frequency which is used, transmission electric power, and rising target received power RTWP_target of the common pilot signal are notified to radio sending and receiving section 31. As and, radio sending and receiving section 31, Radio Frequency, receives the transmission electrical value of the common pilot signal, and the notification of rising target received power RTWP_target from radio network control section, 35 transmits the common pilot signal on the basis of that notification, it descends same as the radio sending and receiving section 21 of macro base station and 3 the data does the sending and receiving of the rising data.

Figure 4 is the figure which shows one example of constitution of the mobile station 72 of form of this execution. If furthermore, the other mobile station 71, also the 73 and the 74 same as Figure 4 should have constituted. When Figure 4 is referred to, the mobile station 72 of form of this execution, antenna 40, radio sending and receiving section 41, reception data processing section 42, transmit data processing section has 43, and buffer section 44.

Radio sending and receiving section 41 descends and, through antenna 40, receives the data, through the reception data processing section, sends the descent data which is received to buffer section 44. The descent data which is housed in buffer section 44 reading out, is utilized according to the purpose. In addition, radio sending and receiving section 41, through transmit data processing section 43, receives the rising data which is housed in buffer section 44, through antenna 40, directing to base station, transmits.

Consequently at below, you explain in detail concerning the setting procedure of RTWP_target due to the femto- base station 4 of form of execution. Figure 5 is the flow figure which shows one example of the procedure where femto- base station 4 of form of this execution does the setting of RTWP_target.

When Figure 5 is referred to, femto- base station 4 measures the received power P_macro of the common pilot signal of macro base station 3 in step S101. Femto- base station 4, when executing the measurement of P_macro, stops the transmission of all radio signals, should have become the mobile station mode which receives the common pilot signal which is transmitted from macro base station 3. Furthermore, the sign of P_macro and the like in the flow figure in Figure 5 is all decibel values.

Step with S102 - S106, P_macro which was measured and small and large comparison with threshold P_th1 and P_th2 which are decided beforehand is done, RTWP_target is decided by selecting from midst of candidacy value R1 of three RTWP_target which are decided beforehand according to the relative result, R2 and R3. Here, the threshold P_th1 for P_macro makes the value (P_th1 &lt; P_th2) which is smaller than threshold P_th2. In addition, small and large relationship of candidacy value R1 of three RTWP_target, R2 and R3 R1 &gt; R2 &gt; makes R3.

Concretely, when P_macro is below P_th1, (YES), RTWP_target is designated as R1 with S102, (S103). When P_macro than P_th1 to be larger and it is below P_th2, (YES), RTWP_target is designated as R2 with S104, (S105). When P_macro is larger than P_th2, (NO), RTWP_target is designated as R3 with S104, (S106).

Really measuring outside propagation environment according to distance, it is possible to set threshold P_th1 and P_th2, and, calculating from theoretical propagation model, such as Okumura model and Qin model it is possible to set. If RTWP_target is the outside, it is decided according to the cell design of cell radius and the like. Regarding the form of this execution, it is possible to set R3, to the same as the outside. In addition, R3 from macro base station 3 installs femto- base station 4 in the outside of specified 1st distance, in order when from femto- base station 4 the mobile station 72 is categorized to specified 2nd distance, for the interference which the mobile station 72 causes to macro base station 3 to reach approved level, is possible to decide. For example R2 and R1, from R3 in order in order at a time 10dB to increase, it is possible to set.

In addition, but, with form of this execution, as for the threshold of P_macro 2, as for the specification of RTWP_target 3 the case where it was explained, the fact that it is not something which is limited to these numbers is of course, as bigger number than form of this execution or a small number is good.

In addition, in the explanation which used Figure 5 and mentions, RTWP_target, showed the example which is set in ascending arrangement according to the size of P_macro. But, in order to be inversely proportional to P_macro the occasion where it calculated with true value, it is possible to set RTWP_target. Concrete, for example, it is possible to calculate at the decibel value which is shown below RTWP_target with arithmetic expression (1).&lt;br /&gt; RTWP_target &lt;br /&gt; = Median (RTWP_target_default + (Pmacro_default - Pmacro), RTWP_target_max,&lt;br /&gt; RTWP_target_min) (1)&lt;br /&gt; Here, RTWP_target_default is the fixed value which is equal to R3 of form of this execution. As for P_macro_default, from macro base station 3 specified 1st distance (the occasion where RTWP_target_default is set use) it is the common pilot signal received power in. In addition, RTWP_target_max and RTWP_target_min are the maximum and minimum of RTWP_target.

It is possible to set with the setting which is based on arithmetic expression (1), RTWP_target according to the distance from of macro base station 3. As a result, because at the femto- base station 4 which is categorized to the macro base station 3 vicinities RTWP_target becomes small, be able to control the increase of transmission electric power of the mobile station 72 - the 74 which are communicated with femto- base station 4, the interference for the rising circuit of macro base station 3 can be controlled. On the one hand, because at the femto- base station 4 which is located distantly from macro base station 3 RTWP_target becomes large, as for the mobile station 72 - the 74 which are communicated with femto- base station 4, it is possible, can evade the decrease of data transmission speed to utilize transmission electric power in the maximum.

[Form 2 of execution]&lt;br /&gt; As for the femto- base station 4 which depends on the form 2 of execution, in place of P_macro in the form 1 of execution, reception quality Ec/No of the common pilot signal of macro base station 3 (energy per chip to noise density) it measures, uses this for the decision of RTWP_target. Same as P_macro Ec/No, there is a character which goes away basically from macro base station and 3 following becomes small. Because of this, the decisive procedure of RTWP_target in femto- base station 4 should have replaced P_macro to Ec/No in the flowchart which is shown in Figure 5. Constitution and operation of femto- base station 4 other than this point because it should have made similar to the form 1 of execution, abbreviate repetition explanation.

[Form 3 of execution]&lt;br /&gt; Form with form 2 of 1 of execution and execution, WCDMA system was adopted as a communication method with base station and the mobile station, but with form 3 of execution, it rises and as for the circuit single carrier FDMA (Frequency Division Multiple Access) system, as for the descent circuit OFDM (Orthogonal Frequency Division Multiplexing) adopts system respectively. And, in radio communication system of form of this execution, as for Radio Frequency zone plural resource blocks (PRB; Physical Resource Block) it is divided, for macro base station the scheduler which is prepared 3 and femto- base station 4 does the allotment of PRB. As for macro base station 3 and femto- base station 4, data transmission with the mobile stations is done making use of PRB which is allotted by the scheduler.

This time, regarding the rising circuit of femto- base station 4, target received power RTWP_target is designated as set point of the received power of each PRB, but the transmission electric power of each PRB which is by the mobile station 72 - the 74 may make decrease according to channel quality and the transmit data quantity.

In macro gate way device 1 of form 1 of execution, radio network control control equipment (Radio Network Controller; RNC) function is added, but with form 3 of execution, as for RNC function it is not added to macro gate way device 1. Instead, RNC function is added to macro base station 3.

Figure 6 is the figure which shows one example of constitution of macro base station 3 of form 3 of execution. When Figure 6 is referred to, macro base station 3 of form of this execution, antenna 50, radio sending and receiving section 51, reception data processing section 52, transmit data processing section 53, wire sending and receiving section has 54, and radio network control section 55.

Radio sending and receiving section 51 descending and, wire sending and receiving section through 24 and transmit data processing section 23 from macro gate way device 1, receiving the data, through antenna 20, directing to the mobile station 71 it transmits. In addition, radio sending and receiving section 51, through antenna 20, rises from the mobile station 71 and receives the data, reception data processing section through 22 and wire sending and receiving section 24, sends to macro gate way device 1. Radio network control section 55 has housed control parameter such as Radio Frequency of each cell and transmission electric power of the common pilot signal, these are notified to radio sending and receiving section 51. Radio sending and receiving section 51 is not, macro gate way device 1 does the radio communication with the mobile station 71 making use of the control parameter which is notified from radio network control section 25.

Furthermore, the other components in Figure 6 similar to the macro base station 3 which depends on the form 1 of the execution which is explained making use of Figure 2 should have made. In addition, the femto- base station also constitution of 4 which depends on the form of this execution and the mobile station 71 - the 74, similar to the form 1 of the execution which is mentioned should have made. In addition, setting procedure of the radio parameter due to femto- base station 4, in other words also setting procedure of target received power RTWP_target, similar to the form 1 of the execution which is mentioned should have made.

[Form 4 of execution]&lt;br /&gt; As for the femto- base station 4 which depends on the form 4 of execution, in place of P_macro in the form 3 of execution, reception quality Ec/No of the common pilot signal of macro base station 3 is measured, this is used for the decision of RWTP_target. The decisive procedure of RTWP_target in femto- base station 4 should have replaced P_macro to Ec/No in the flowchart which is shown in Figure 5. Constitution and operation of femto- base station 4 other than this point because it should have made similar to the form 3 of execution, abbreviate repetition explanation.

[Form 5 of execution]&lt;br /&gt; As for form 1 of execution - 4, femto- base station 4 had executed the measurement of received power Pmacro of the common pilot signal from of macro base station 3. This replacing, as for form 5 of execution, femto- base station inside the mobile station 72 - the 74 which do 4 and communication 1 units measure Pmacro at least, notify the result to femto- base station 4. Constitution of the mobile station 72 in the form of this execution is shown in Figure 7. Furthermore, the mobile station 71, the constitution where also the 73 and the 74 are similar to Figure 7 it should have made.

In Figure 7, reception level test section 45 is added in addition to the constitution in Figure 4. Reception level test section 45, through antenna 40, measures the received power Pmacro of the pilot signal which is transmitted in macro cell. The measurement result is processed in radio sending and receiving section, 41 through antenna 40, is transmitted to femto- base station 4. Femto- base station 4 receives the measurement result of Pmacro, processes in radio network control data setting section 37. After that because that similar it should have done the setting procedure of RTWP_target, either of the formal 1~4 of execution repetition explanation is abbreviated.

&lt; Form of other executions &gt;&lt;br /&gt; Form with 1 of the execution which it mentions - 5, macro base station the mobile station 71 - the 74 have done the sending and receiving of the data with 3 and femto- base station 4, but as for these mobile stations, as for the necessity to be the radio station which always possesses mobility it is not, it is possible to be the radio station which is locked to the place of specification.

In addition, form with 1 of execution - 5, the example where femto- base station 4 does communication simultaneously with the plural mobile station 72 - the 74 was shown. But, if femto- base station 4 at least 1 mobile stations and communication possible it should have been.

In addition, form with 1 of execution - 5, as femto- base station 4, does data sending and receiving with the mobile station 72 - the 74, other base station (concretely the example which controls the transmission electric power of the mobile station 72 - the 74 macro base station 3) from on the basis of the reception quality of the pilot signal was explained. But, as data sending and receiving is done at least with 1 mobile stations, as for the radio station which has the function which at least controls the transmission electric power of 1 mobile stations on the basis of the reception quality of the pilot signal from other base station, as for the necessity always to be base station of femto- base station 4 and the like it is not. For example, the radio station which has the above-mentioned function, has the information input/output section of the operation button, the keyboard, the microphone and the speaker, etc is possible to be the radio communication terminal which is used for the user. The form of this kind of execution, for example, the plural mobile stations macro base station 3 through in inside macro cell 5 where macro base station 3 forms, when ad hoc communication is done and the like, it is effective. In other words, macro base station the rising circuit of the mobile station which does 3 and communication, it can control the interference between the communication channels between the mobile stations which do ad hoc communication.

In addition, setting procedure of the target received power RTWP_target which the femto- base station 4 which is expressed with form 1 of execution - 5 executes is actualization possible by making the program for base station control computer execute such as microprocessor. For example, in case of form 1 of execution, on the basis of the control of the computer which executes the base station control supervisor, if to mobile station mode reception section 36 measurement of pilot signal received power Pmacro from of macro base station 3 should have been made to execute. Furthermore, the computer, using Pmacro which was measured, as target received power RTWP_target is calculated, if the transmission power control for the mobile station 72 - the 74 on the basis of the control by the computer, should have been executed.

As for this program, it is possible, to house in record medium of various types, in addition, through communication medium, it is possible to be transmitted. Here, in record medium, for example, flexible disk and the hard disk, the disk and the magnet-optical disk, CDROM, DVD, the ROM cartridge, the battery backup equipped RAM memory cartridge, the flash memory cartridge and the non-volatile RAM cartridge etc are included. In addition, wire communication medium and radio communication medium etc of microwave circuit and the like such as telephone line are included by communication medium, also Internet is included.

Furthermore, this invention is not something where is limited in only form of the execution which is mentioned, the fact that various modifications are possible gist of this invention which is already expressed in the range which does not deviate of course is.

This application insists the preference which designates the Japanese application patent application 2007312258 which is applied on 2007 December 3rd as the foundation takes in everything of the disclosure here.

As for this invention, especially, radio station rises at least autonomously in regard to the radio communication system which includes radio station, the radio communication system which does the radio resource management of the circuit, communications control method, it is possible to utilize in the control supervisor of radio station, and radio station.