Source: https://patents.google.com/patent/CN104041100A/en
Timestamp: 2020-01-23 14:28:23
Document Index: 476966224

Matched Legal Cases: ['art 240', 'art 240', 'art 240', 'art 240', 'art 240', 'art 240', 'art 240', 'art 240', 'art 260', 'art 260', 'art 260', 'art 260', 'art 240', 'art 260', 'art 260', 'art 260', 'art 240', 'art 240', 'art 2010', 'art 2010', 'art 2010', 'art 2010', 'art 2010', 'art 2010', 'art 2010', 'art 3010', 'art 3010', 'art 3010', 'art 3010', 'art 2010', 'art.\n12']

CN104041100A - Communication device, mobile communication device, communication system, and communication method - Google Patents
Communication device, mobile communication device, communication system, and communication method Download PDF
CN104041100A
CN104041100A CN201280066508.0A CN201280066508A CN104041100A CN 104041100 A CN104041100 A CN 104041100A CN 201280066508 A CN201280066508 A CN 201280066508A CN 104041100 A CN104041100 A CN 104041100A
CN201280066508.0A
大山哲平
下村刚史
2012-01-10 Application filed by 富士通株式会社 filed Critical 富士通株式会社
2012-01-10 Priority to PCT/JP2012/050286 priority Critical patent/WO2013105220A1/en
2014-09-10 Publication of CN104041100A publication Critical patent/CN104041100A/en
A communication device (100) comprises an identification unit (110), an acquisition unit (130), and a notification unit (140). The identification unit (110) identifies each location included in a coverage area of the host device with which wireless communication with a mobile communication device is possible. The acquisition unit (130) acquires, from a database (120) which the mobile communication device cannot access, frequency information (131) which denotes a frequency usable in the wireless communication in each of the locations which are identified by the identification unit (110). The notification unit (140) notifies the coverage area with a wireless signal (142) of association information (141), based on the frequency information (131) which is acquired by the acquisition unit (130), which associates each location with the usable frequency.
Communicator, mobile communications device, communication system and communication means
The present invention relates to communicator, mobile communications device, communication system and communication means.
In recent years, wireless traffic continues to increase hastily, and the demand of the frequency as limited resources is continued to increase.As realizing one of means of effective frequency of utilization, carry out to cognition electric wave environment around the research that the cognition wireless technology of optimal communication is relevant and make progress.For example, as white space type (or frequency sharing type) cognition wireless, known to find white space (the WS:White Space: function white space) communicating of frequency according to time, place with can preferentially not interfering by the system of each frequency.For example in the U.S., the communication utilization of TV white space (TVWS) is studied.
In the cognition wireless of white space type, for example, the system with the priority of frequency of utilization is called to Major Systems or 1 subsystem, the system of finding white space and communicating is called to subsystem or 2 subsystems.The in the situation that of TVWS, TV broadcasts as Major Systems.
(change of time orientation is also few for Ultra High Frequency: utmost point ultrashort wave) frequency band etc. distributes wide frequency band, frequency (the TV channel of the physics) difference of not only using according to region in TV broadcast, to utilize UHF.Method as finding this quasi-static TVWS, has sensing mode and database access mode etc.Such as also can be according to by FCC (Federal Communications Commission: the rule of Federal Communications Committee) delivering is come regulation sensing mode or database access mode etc.
In database access mode, for example the database in electrical secondary system accesses network is obtained the WS information that represents white space.Database is such as the WS information calculating according to information such as the position at TV broadcast transmission station, transmitted power, transmission frequency is associated with positional information.In the rule of FCC, stipulated following content: the subsystem of usage data storehouse access mode 1 day in order to use TVWS is accessing database more than 1 time at least.
On the other hand, known technology as follows in cognition wireless: wireless terminal decides and utilizes frequency (for example,, with reference to following patent documentation 1 according to comprising from the parameter of the frequency utilized of data library device issue and signal post's need of communication distance.)。
Patent documentation 1: TOHKEMY 2007-184850 communique
But, in above-mentioned prior art, belong to subsystem and do not have to the mobile communications device etc. of access function that the server of WS information is provided, on the position of this device, cannot differentiate which frequency is white space.Therefore, the frequency limitation that mobile communications device can be used in radio communication is spendable frequency in the whole overlay areas such as base station etc., has the situation of the utilization ratio step-down of frequency.
The object of the invention is in order to eliminate the problem points of above-mentioned prior art, and communicator, mobile communications device, communication system and the communication means of the raising of the utilization ratio that can realize frequency are provided.
In order to solve above-mentioned problem and to reach object, according to an aspect of the present invention, following communicator has been proposed, mobile communications device, communication system and communication means, wherein determine and between communicator and mobile communications device, can carry out each position that the overlay area of the above-mentioned communicator of radio communication comprises, from the database that the information that comprises the frequency that can use according to each positional representation above-mentioned radio communication and above-mentioned mobile communications device can not be accessed, obtain and be illustrated in the frequency information that can be used in the frequency of above-mentioned radio communication on determined each position, that utilizes that wireless signal reports frequency information based on obtained to above-mentioned overlay area makes above-mentioned each position information corresponding with the above-mentioned frequency that can use, receive the wireless signal of having reported, from received wireless signal, obtain the information of above-mentioned correspondence, determine the position of mobile communications device, the retrieval above-mentioned frequency that can use corresponding with determined position from the information of obtained above-mentioned correspondence, the frequency that utilization retrieves is carried out above-mentioned radio communication between above-mentioned communicator and above-mentioned mobile communications device.
According to a side of the present invention, play the utilization ratio that can realize frequency and improve such effect.
Fig. 1-1st, illustrates the figure of an example of structure of the communicator of execution mode 1.
Fig. 1-2 is the figure of other example of structure that the communicator of execution mode 1 is shown.
Fig. 2-1st, illustrates the figure of an example of structure of the mobile communications device of execution mode 1.
Fig. 2-2nd, illustrates the figure of other example of structure of the mobile communications device of execution mode 1.
Fig. 2-3rd, illustrates the figure of another example of structure of the mobile communications device of execution mode 1.
Fig. 3 is the figure of an example that the communication system of execution mode 1 is shown.
Fig. 4-1st, illustrates the figure of an example of the hardware configuration of base station.
Fig. 4-2nd, illustrates the figure of an example of the hardware configuration of mobile communications device.
Fig. 4-3rd, illustrates the figure of an example of the hardware configuration of database server.
Fig. 5 is the flow chart of an example of action that the base station of execution mode 1 is shown.
Fig. 6 is the flow chart of an example of action that the mobile communications device of execution mode 1 is shown.
Fig. 7 is the figure that an example of each position that overlay area comprises is shown.
Fig. 8 is the figure that an example of the positional information being sent by base station is shown.
Fig. 9 is the figure that the concrete example of each position that overlay area comprises is shown.
Figure 10 be illustrate in each position can frequency of utilization the figure of concrete example.
Figure 11 illustrates the figure of concrete example that each frequency is the position of white space.
Figure 12 is the figure of concrete example that the transmission frame of base station is shown.
Figure 13 is the figure of concrete example that the wireless signal of each frequency that base station sends is shown.
Figure 14 is the block diagram that the example that the decoding of the wireless signal of mobile communications device processes is shown.
Figure 15 is the figure of an example of structure that the communicator of execution mode 2 is shown.
Figure 16-1st, illustrates the figure of an example in the WS region of each frequency.
Figure 16-2nd, illustrates the figure of an example of action of the communication system of execution mode 2.
Figure 17 is the flow chart of an example of action that the base station of execution mode 2 is shown.
Figure 18 is the figure of other example of action that the communication system of execution mode 2 is shown.
Figure 19 is other routine flow chart of action that the base station of execution mode 2 is shown.
Figure 20 is the figure of concrete example that the wireless signal of each frequency that base station sends is shown.
Figure 21 is the figure of an example of structure that the communicator of execution mode 3 is shown.
Figure 22 is the figure that an approximate example of area information is shown.
Figure 23 is the figure that the approximate concrete example in region is shown.
Figure 24 is the flow chart of an example that the approximate processing in region is shown.
Figure 25 is the figure that an example of Region Segmentation is shown.
Figure 26 is the flow chart of an example that the dividing processing in region is shown.
Figure 27 is the figure that the concrete example of cutting apart in region is shown.
Figure 28 is the figure that other example of cutting apart in region is shown.
Figure 29 is the flow chart of other example that the dividing processing in region is shown.
Figure 30 is the figure of the structure of communicator (its 1) that execution mode 4 is shown.
Figure 31 is the figure of the structure of communicator (its 2) that execution mode 4 is shown.
Figure 32 is the flow chart of an example of action that the database server of execution mode 4 is shown.
Figure 33 is the flow chart of an example of action that the base station 320 of execution mode 4 is shown.
Below, with reference to accompanying drawing, describe the execution mode of communicator of the present invention, mobile communications device, communication system and communication means in detail.
(structure of the communicator of execution mode 1)
Fig. 1-1st, illustrates the figure of an example of structure of the communicator of execution mode 1.Communicator 100 shown in Fig. 1-1 be and the overlay area of communicator 100 (this device) in mobile communications device between carry out the radio communication device of radio communication.Communicator 100 is for example and between mobile communications device, carries out the base station of radio communication.Or communicator 100 can be with other mobile communications device between carry out mobile communications device of radio communication (communicating by letter such as wireless Ad Hoc) etc.
As Figure 1-1, communicator 100 possesses determination portion 110, obtaining section 130 and reports portion 140.Determination portion 110 is determined each position that the overlay area of communicator 100 comprises.For example, the coverage area information of the scope of the overlay area of storage expression communicator 100 in the memory of communicator 100, each position that determination portion 110 determines that by reading out in the coverage area information of storing in memory overlay area comprises.
Or determination portion 110 can be determined each position that overlay area comprises by receive the coverage area information of the scope of the overlay area that represents communicator 100 from other communicator.Or determination portion 110 can be by determining according to the scope of the overlay area of the calculating communicators 100 such as intensity of the wireless signal of communicator 100 transmissions each position that overlay area comprises.
Determination portion 110 is notified fixed each position to obtaining section 130.In the example shown in Fig. 1-1, the definite position p2 of determination portion 110 ..., each position of comprising as the overlay area of communicator 100 of pm (m is natural number).In the case, determination portion 110 to obtaining section 130 output represent position p2 ..., pm positional information 111.
Database 120 be comprise according to position p1 ..., pm ... pn (n is the natural number that is greater than m) is illustrated in the database of the information of spendable frequency in the radio communication between communicator 100 and mobile communications device.Position p1 ..., pm ... in pn, comprise position p2 that the overlay area of communicator 100 comprises ..., pm.Database 120 can be the database that the memory of the external device (ED) (for example server) of communicator 100 is stored, or can be the database that the memory of communicator 100 is stored.
Obtaining section 130 obtains frequency information from database 120, and this frequency information is illustrated in spendable frequency in the radio communication from each position shown in the positional information 111 of determination portion 110 outputs and between mobile communications device.For example,, in the situation that store database 120 in the memory of communicator 100, read frequency information the database 120 that obtaining section 130 is stored from memory.In addition, in the situation that store database 120 in the memory of the external device (ED) of communicator 100, obtaining section 130 is from external device (ED) receive frequency information.
In the example shown in Fig. 1-1, from determination portion 110 to obtaining section 130 notice position p2 ..., pm.Therefore, obtaining section 130 from database 120, obtain with the position p1 of database 120 ..., pm ... in the relevant frequency information of pn with position p2 ..., frequency information 131 that pm is relevant.
Obtaining section 130 is to reporting the acquired frequency information 131 of portion's 140 output.In frequency information 131, frequency F1, F2 are corresponding to position p2.In addition, in frequency information 131, frequency F1, F3 are corresponding to position p3.In addition, in frequency information 131, frequency F3 is corresponding to position pm.
Report portion 140 according to wireless signal 142, to the overlay area of communicator 100, report frequency information 131 based on from obtaining section 130 output make position p2 ..., pm and corresponding informance 141 corresponding to spendable frequency.Corresponding informance 141 be for example according to position p2 ..., pm is illustrated in the information of spendable frequency in the radio communication between communicator 100 and mobile communications device.Or, corresponding informance 141 be according to frequency illustrate the position p2 that can carry out radio communication between communicator 100 and mobile communications device ..., pm information.
In addition, communicator 100 possesses and mobile communications device between carry out the Department of Communication Force of radio communication.The Department of Communication Force of communicator 100 utilizes mobile communications device according to the frequency of reporting corresponding informance 141 that portion 140 reports and selecting, and between mobile communications device, carries out radio communication.
Like this, communicator 100 is obtained the spendable frequency in each position in overlay area and is reported in overlay area from database 120.Thus, the mobile communications device in overlay area can be determined in the spendable frequency of self-position.Therefore, thereby for example cannot determine that with mobile communications device the situation that the frequency that can use at self-position is used in the whole overlay area of communicator 100 spendable frequency to carry out radio communication compares, can put forward high-frequency utilization ratio.
Fig. 1-2 is the figure of other example of structure that the communicator of execution mode 1 is shown.In Fig. 1-2, to the part mark prosign identical with the part shown in Fig. 1-1, also description thereof is omitted.As shown in Figure 1-2, obtaining section 130, according to the information of database 120, for spendable each frequency in radio communication, obtains the positional information that expression can be carried out the position of radio communication.
In the example shown in Fig. 1-2, obtaining section 130 obtains the corresponding positional information 151～153 respectively with spendable frequency F1 in radio communication between communicator 100 and mobile communications device～F3.Positional information 151 mean in the radio communication between communicator 100 and mobile communications device can frequency of utilization F1 position p2, p3 ... information.Positional information 152 mean in the radio communication between communicator 100 and mobile communications device can frequency of utilization F2 position p2 ... information.Positional information 153 mean spendable frequency F3 in the radio communication of carrying out between communicator 100 and mobile communications device position p3 ..., pm information.Obtaining section 130 is to reporting portion's 140 output position information 151～153.
Reporting portion 140 sends from the positional information 151～153 of obtaining section 130 outputs according to the wireless signal of object frequency respectively.Specifically, report portion 140 and send positional information 151 according to the wireless signal 161 of frequency F1.In addition, report portion 140 and send positional information 152 according to the wireless signal 162 of frequency F2.In addition, report portion 140 and send positional information 153 according to the wireless signal 163 of frequency F3.
Like this, communicator 100 respectively as object frequency, by reporting and represent to use object frequency with the wireless signal of object frequency same frequency, can carry out the positional information of the position of radio communication using spendable frequency.Thus, mobile communications device can by be received in and communicator 100 between radio communication in the wireless signal of the Candidate Frequency that uses, obtain the positional information that expression can be used each position of Candidate Frequency.Therefore, for example mobile communications device can efficiency be obtained the positional information with spendable frequency dependence well.
(structure of the mobile communications device of execution mode 1)
Fig. 2-1st, illustrates the figure of an example of structure of the mobile communications device of execution mode 1.Mobile communications device 200 shown in Fig. 2-1 is in the overlay area of the communicator 100 shown in Fig. 1-1, Fig. 1-2 and between communicator 100, carries out the mobile communications device of radio communication.In addition, mobile communications device 200 is the mobile communications devices that can not access the database 120 shown in Fig. 1-1, Fig. 1-2.As shown in Fig. 2-1, mobile communications device 200 possesses acceptance division 210, obtaining section 220, determination portion 230, search part 240 and Department of Communication Force 250.
The wireless signal that acceptance division 210 utilizes from communicator 100, receives the signal of reporting to the overlay area of communicator 100.For example, when the Candidate Frequency using between communicator 100 and mobile communications device 200 is made as to frequency F1～F5, acceptance division 210 is the wireless signal of receive frequency F1～F5 respectively.For example, in the example shown in Fig. 1-1, acceptance division 210 receives the wireless signal 142 that comprises corresponding informance 141.The wireless signal 142 that acceptance division 210 has received to obtaining section 220 outputs.
Obtaining section 220 is according to the wireless signal 142 from acceptance division 210 outputs, obtain make on each position that He overlay area, each position that overlay area comprises comprises with communicator 100 between radio communication in the corresponding corresponding informance 141 of spendable frequency.Obtaining section 220 is to the acquired corresponding informance 141 of search part 240 output.
Determination portion 230 is determined the position of mobile communications device 200 (this device).For example, determination portion 230 is by receiving from GPS (Global Positioning System: global positioning system) gps signal of satellite is determined the position of mobile communications device 200.Or determination portion 230 can be by receiving the position of determining mobile communications device 200 from the wireless signal of peripheral base station.In the example shown in Fig. 2-1, determined the position of position p2 as mobile communications device 200.Determination portion 230 represents the positional information 231 of fixed position p2 to search part 240 outputs.
The frequency that search part 240 is corresponding with the position p2 shown in the positional information 231 of exporting from determination portion 230 according to retrieval the corresponding informance 141 from obtaining section 220 outputs.In corresponding informance 141, frequency F1, F2 are corresponding to position p2 (for example, with reference to Fig. 1-1).Search part 240 represents the frequency information 241 through frequency F1, the F2 of retrieval acquisition to Department of Communication Force 250 outputs.
Between at least any one frequency frequency F1, F2 shown in the frequency information 241 that Department of Communication Force 250 use are exported from search part 240 and communicator 100, carry out radio communication.Thus, even if mobile communications device 200 does not have to the function of database 120 access, also can determine spendable frequency on the position of mobile communications device 200, and carry out radio communication by fixed frequency and between communicator 100.
Fig. 2-2nd, illustrates the figure of other example of structure of the mobile communications device of execution mode 1.In Fig. 2-2, to the part mark prosign identical with part shown in Fig. 2-1, also description thereof is omitted.As shown in Fig. 2-2, in the wireless signal receiving at acceptance division 210, comprise wireless signal 161～163 (with reference to Fig. 1-2).The wireless signal 161～163 that acceptance division 210 has received to obtaining section 220 outputs.
Obtaining section 220 is according to obtaining respectively positional information 151～153 from the wireless signal 161～163 of acceptance division 210 outputs.Obtaining section 220 is to the acquired positional information 151～153 of search part 240 output.Search part 240 is according to retrieve the frequency corresponding with the position p2 shown in the positional information 231 of exporting from determination portion 230 from the positional information 151～153 of obtaining section 220 outputs.In the example shown in Fig. 2-2, because comprise position p2 in positional information 151,152, so obtain frequency F1, F2 as the frequency corresponding with position p2.
Like this, mobile communications device 200 receives the wireless signal of Candidate Frequency, and obtains positional information according to the signal of the Candidate Frequency having received.Thus, for example mobile communications device 200 can efficiency be obtained the positional information with spendable frequency dependence well.
Fig. 2-3rd, illustrates the figure of another example of structure of the mobile communications device of execution mode 1.In Fig. 2-3, to the part mark prosign identical with part shown in Fig. 2-2, also description thereof is omitted.As shown in Fig. 2-2, mobile communications device 200 also possesses determination part 260 and selection portion 270 except the structure shown in Fig. 2-2.
Determination part 260 is according to the wireless signal 161～163 from acceptance division 210 outputs, measures mobile communications device 200 under each frequency and the communication quality between communicator 100.Communication quality is for example receiving intensity.In the example shown in Fig. 2-3, communication quality q1～q3 that determination part 260 is measured under frequency F1～F3.
But determination part 260 at least can be measured by the communication quality under the detected frequency of search part 240.That is, determination part 260 can be measured the communication quality under frequency F1, F2, and does not measure the communication quality under frequency F3.The quality information 261 of communication quality q1～q3 under frequency F1～F3 that determination part 260 represents to have measured to selection portion 270 outputs.
Selection portion 270 is according to the quality information 261 from determination part 260 outputs, from frequency F1, the F2 shown in the frequency information 241 of being exported by search part 240, be chosen in and communicator 100 between radio communication in the frequency used.For example, selection portion 270 is selected the highest frequency of communication quality shown in quality information 261 from frequency F1, F2.In the example shown in Fig. 2-3, be assumed to the communication quality q1 of frequency F1 higher than the communication quality q2 of frequency F2, selection portion 270 is selected frequency F1.The frequency information 271 of the frequency F1 that selection portion 270 has been selected to Department of Communication Force 250 output expressions.
Department of Communication Force 250 use are carried out radio communication between the frequency F1 shown in the frequency information 271 of selection portion 270 outputs and communicator 100.Thus, even if mobile communications device 200 does not have to the function of database 120 access, also can determine the good frequency of spendable communication quality on the position of mobile communications device 200, and use between fixed frequency and communicator 100 and carry out radio communication.
(communication system of execution mode 1)
Fig. 3 is the figure of an example that the communication system of execution mode 1 is shown.As shown in Figure 3, the communication system 300 of execution mode 1 comprises electric wave tower 310, base station 320, mobile communications device 330 and database server 340.Communicator 100 shown in Fig. 1-1, Fig. 1-2 for example can be applicable to base station 320.Database 120 shown in Fig. 1-1, Fig. 1-2 for example can be applicable to database server 340.Mobile communications device 200 shown in Fig. 2-1～Fig. 2-3 for example can be applicable to mobile communications device 330.
Electric wave tower 310 is such as the system that sends the primary side of TV or wireless broadcasting wave etc.The frequency that electric wave tower 310 is used is made as f1.Prohibited area 311 is electric wave tower 310 regions around, is the region that the communication system different from the communication system of electric wave tower 310 cannot frequency of utilization f1.
Base station 320 and mobile communications device 330 are to be used as the electric wave tower 310 of primary side system there is no the cellular system of the secondary side of the frequency (white space) used.Region around, 321Shi base station, overlay area 320 is can carry out the region of radio communication between base station 320 and mobile communications device 330.
Database server 340 be for example connected in wired mode with base station 320 and can be from base station 320 servers that conduct interviews.On the other hand, database server 340 is the servers that can not directly access from mobile communications device 330.
In the example shown in Fig. 3, mobile communications device 330 is positioned at the lap of overlay area 321 and prohibited area 311.Therefore the frequency in the wireless signal, sending to base station 320 at mobile communications device 330 beyond proportion f1.In addition, when mobile communications device 330 and base station 320 with same frequency utilization TDD two-way while sending wireless signal, the also frequency beyond proportion f1 in the wireless signal sending to mobile communications device 330 in base station 320.
(hardware configuration of base station)
Fig. 4-1st, illustrates the figure of an example of the hardware configuration of base station.Base station 320 shown in Fig. 3 for example can be realized by the information processor 410 shown in Fig. 4-1.Information processor 410 possesses CPU411, main storage 412, additional storage 413, user interface 414, wireless communication interface 415 and wired communication interface 416.CPU411, main storage 412, additional storage 413, user interface 414, wireless communication interface 415 and wired communication interface 416 connect via bus 419.
CPU411 (Central Processing Unit: central processing unit) carry out the control of information processor 410 integral body.Main storage 412 is for example RAM (Random Access Memory: random access memory).The working region that main storage 412 is used as CPU411.Additional storage 413 is such as being the nonvolatile storages such as hard disk or flash memory.The various programs that storage is moved information processor 410 in additional storage 413.The program of storage in additional storage 413 is loaded in main storage 412, by CPU411, is carried out.
User interface 414 is accepted from the input equipment of user's operation input or to the output equipment of user's output information etc. such as comprising.Input equipment is such as realizing by key (such as keyboard) or remote controller etc.Output equipment is such as realizing by display or loud speaker etc.In addition, can realize input equipment and output equipment by touch panel etc.Utilize CPU411 to control user interface 414.
Wireless communication interface 415 is the communication interfaces that for example, communicate between the outside (mobile communications device 330) that utilizes wireless and information processor 410.Wired communication interface 416 is the communication interfaces that for example, communicate between the outside (database server 340) that utilizes wired and information processor 410.Utilize CPU411 to control wireless communication interface 415 and wired communication interface 416.
Determination portion 110 shown in Fig. 1-1, Fig. 1-2 for example can realize by CPU411 and additional storage 413.Obtaining section 130 for example can realize by CPU411 and wired communication interface 416.Reporting portion 140 for example can realize by wireless communication interface 415.The Department of Communication Force of communicator 100 for example can be realized by wireless communication interface 415.
(hardware configuration of mobile communications device)
Fig. 4-2nd, illustrates the figure of an example of the hardware configuration of mobile communications device.Mobile communications device 330 shown in Fig. 3 for example can utilize the information processor 420 shown in Fig. 4-2 to realize.Information processor 420 possesses CPU421, main storage 422, additional storage 423, user interface 424, wireless communication interface 425 and GPS module 426.CPU421, main storage 422, additional storage 423, user interface 424, wireless communication interface 425 and GPS module 426 utilize bus 429 to connect.
CPU421, main storage 422, additional storage 423 and user interface 424 are identical with the CPU411 shown in Fig. 4-1, main storage 412, additional storage 413 and user interface 414 respectively.
Wireless communication interface 425 is the communication interfaces that for example, communicate between the outside (base station 320) that utilizes wireless and information processor 420.Utilize CPU421 to control wireless communication interface 425.GPS module 426 is the modules that obtain the information of the current location that represents information processor 420 from the gps signal of gps satellite by receiving.Utilize CPU421 to control GPS module 426.
Acceptance division 210 shown in Fig. 2-1～Fig. 2-3 for example can be realized by wireless communication interface 425.Obtaining section 220 for example can realize by CPU421.Determination portion 230 for example can realize by GPS module 426.Search part 240 for example can realize by CPU421.Department of Communication Force 250 for example can be realized by wireless communication interface 425.
(hardware configuration of database server)
Fig. 4-3rd, illustrates the figure of an example of the hardware configuration of database server.Database server 340 shown in Fig. 3 for example can be realized by the information processor 430 shown in Fig. 4-3.Information processor 430 possesses CPU431, main storage 432, additional storage 433, user interface 434 and communication interface 435.CPU431, main storage 432, additional storage 433, user interface 434 and communication interface 435 utilize bus 439 to connect.
CPU431, main storage 432, additional storage 433 and user interface 434 are identical with the CPU411 shown in Fig. 4-1, main storage 412, additional storage 413 and user interface 414 respectively.
Communication interface 435 is to utilize the communication interface for example, communicating between the outside of wireless or wired and information processor 430 (base station 320).Utilize CPU431 to control communication interface 435.
(action of the base station of execution mode 1)
Fig. 5 is the flow chart of an example of action that the base station of execution mode 1 is shown.First, the scope (step S501) of the overlay area 321 of our station is calculated in base station 320 according to the transmitted power such as our station or transmitting antenna figure etc.Narrate the calculating of the scope of overlay area 321 below.
Then, each locational spendable frequency (step S502) that overlay area 321 comprises, according to the scope of the overlay area 321 of being calculated by step S501, is obtained in base station 320 from database server 340.Then, base station 320, according to the spendable frequency of utilizing step S502 to obtain, according to each frequency, generates the positional information (step S503) that can carry out the position of radio communication between expression and mobile communications device 330.
Then, the transmission based on wireless signal (step S504) of the positional information of each frequency that base station 320 beginnings are calculated by step S503, and finish a succession of action.According to each above step, spendable frequency on each position of overlay area 321 can be obtained from database server 340 in base station 320, and reports in overlay area 321.
(action of the mobile communications device of execution mode 1)
Fig. 6 is the flow chart of an example of action that the mobile communications device of execution mode 1 is shown.First, mobile communications device 330 receives the wireless signal (step S601) that uses the frequency not receiving in Candidate Frequency.Then, mobile communications device 330 is measured the signal quality (step S602) of the wireless signal receiving via step S601.
Then, mobile communications device 330, according to the signal quality determining via step S602, judges whether to use the wireless signal receiving by step S601 as reporting signal (step S603).For example, mobile communications device 330 is judged as and does not use wireless signal as reporting signal when signal quality is less than threshold value, at signal quality, is that threshold value is judged as when above and uses wireless signal as reporting signal.When being judged as wireless signal that use received when reporting signal (step S603: be), 330 pairs of wireless signals that received of mobile communications device decode (step S604).
Then, mobile communications device 330 is obtained positional information (step S605) from the decoded result of step S604, and shifts to step S606.The positional information obtaining via step S605 is to use the information that can carry out the position of radio communication between the frequency identical with the frequency of the wireless signal receiving via step S601 and base station 320.
When be judged as wireless signal that use does not receive when reporting signal (step S603: no) in step S603, mobile communications device 330 judges whether the wireless signal (step S606) that utilizes step S601 to receive whole use Candidate Frequencies.When not receiving the wireless signal of whole use Candidate Frequencies (step S606: no), mobile communications device 330 is back to step S601.
When receiving the wireless signal of whole use Candidate Frequencies in step S606 (step S606: be), mobile communications device 330 utilizes GPS to determine self-position (step S607).Then, mobile communications device 330 is according to via the definite self-position of step S607 and the positional information that obtains according to each frequency via step S605, be chosen in and base station 320 between radio communication in the frequency (step S608) used.
Then, mobile communications device 330 use the frequency of selecting via step S608 to start and base station 320 between radio communication (step S609), and finish a series of action.Utilize each above step, mobile communications device 330 can be determined spendable frequency on the position of mobile communications device 330 according to the positional information of each frequency of reporting from base station 320, and carries out radio communication by fixed frequency and between base station 320.
(calculating of overlay area)
Base station 320 for example can be by adopting the propagation formula in free space to obtain the scope that zone radius calculates the overlay area 321 of our station.For example, when by the ERP of the transmitting antenna of base station 320 (Effective Radiation Power: actual effect radiant power) be made as P[W] time, can utilize following formula (1) to illustrate with the transmitting antenna of base station 320 at a distance of d[km] locational electric field strength E [dBuV/m].
E＝106.9+10·log(P/1000)-20·logd…(1)
Therefore,, when the electric field strength of the overlay area of base station 320 is made as to Ec (E=Ec), can utilize following formula (2) that the radius R c (d=Rc) of the overlay area 321 of base station 320 is shown.
Rc = 10 106.9 - Ec 20 P 1000 [ km ] &CenterDot; &CenterDot; &CenterDot; ( 2 )
Base station 320 for example can be calculated using the position of pre-stored base station 320 in the memory of base station 320 as center and be had the circle of the radius R c calculating via above-mentioned formula (2), as the scope of overlay area 321.
(each position that overlay area comprises)
Fig. 7 is the figure that an example of each position that overlay area comprises is shown.In Fig. 7, to the part mark prosign identical with the part shown in Fig. 3, also description thereof is omitted.As shown in Figure 7,320Jiang overlay area, base station 321 is divided into latticed, and uses the point (i, j) of each grid of having cut apart as each position of overlay area 321.Calculating coverage area based 321 each points (i, j) that comprise are carried out according to the radius R c of the overlay area 321 of calculating via above-mentioned formula (2) in base station 320.
Then, each point (i, j) that has calculated to database server 340 notices base station 320, the set f (i, j) obtaining from database server 340 thus in the upper spendable frequency of each point (i, j)=f1, f2 ..., fn}.The set of the point (i, j) that the some set P (fk) that at frequency f k is the region of white space is comprised to frequency f k in the table at f (i, j).
(positional information of utilizing base station to send)
Fig. 8 is the figure that an example of the positional information of utilizing base station transmission is shown.In Fig. 8, to the part mark prosign identical with the part shown in Fig. 7, also description thereof is omitted.Positional information 701 shown in Fig. 8 be wireless signal that base station 320 sends comprise by the positional information under the frequency f 1 in the positional information of frequency.In positional information 701, storing can each position latitude of living in of frequency of utilization f1 and the information of the combination of longitude.
Equally, base station 320 also sends the positional information of the information of the combination that stores spendable each position latitude of living in and longitude about the frequency beyond frequency f 1.Like this, base station 320 sends the table that comprises frequency f k and represent the some set P (fk) of position that can frequency of utilization fk, as the positional information about frequency f k.In addition, base station 320 utilizes the wireless signal of frequency f k to send the positional information about frequency f k.
The candidate of 330 pairs of frequencies to be used of mobile communications device is scanned, and according to signal quality, judges and adopts which frequency, can decode by the signal to each frequency in addition, obtains the positional information of each frequency.Specifically, mobile communications device 330 is according to the self-position (x, y) of being determined by GPS and some set P (fk), and needing only that (x, y) ∈ P (fk) just can be judged as can frequency of utilization fk.
(concrete example of each position that overlay area comprises)
Fig. 9 is the figure that the concrete example of each position that overlay area comprises is shown.In Fig. 9, to the part mark prosign identical with the part shown in Fig. 3, also description thereof is omitted.As shown in Figure 9, in the overlay area 321 of the radius R c that utilizes base station 320 to calculate, comprise 9 grids.
(concrete example of spendable frequency on each position)
Figure 10 is the figure that the concrete example of spendable frequency on each position is shown.Utilize each point (0,0) on xy axes of coordinates, (0,1), (0,2), (1,0) ..., (2,2) 9 grids coming the overlay area 321 shown in presentation graphs 9 to comprise.The candidate of the frequency adopting here in addition, is these 3 of frequency f 1, f2, f3.
Shown in Figure 10 on each aspect spendable frequency.For example, in point (0,0), spendable frequency is frequency f 1, f3.In addition, in point (1,2), spendable frequency is frequency f 1.
(concrete example of the position that each frequency is white space)
Figure 11 illustrates the figure of concrete example that each frequency is the position of white space.As shown in figure 11, the some set P (fk) that indicated object frequency is each position of white space, according to spendable frequency on each position shown in Figure 10, is calculated respectively for frequency f 1～f3 in base station 320.Base station 320 utilizes wireless signal to report calculated some set P (fk), as the positional information of each frequency.
(concrete example of the transmission frame of base station)
Figure 12 is the figure of concrete example that the transmission frame of base station is shown.Transmission frame 1200 shown in Figure 12 is Yi Ge units' (20 time slot) of the transmission frame in base station 320.For example, base station 320 is using the initial time slot that sends frame 1200 as reporting signal slot 1210, stored position information in reporting signal slot 1210.Thus, report termly positional information.
(concrete example of the wireless signal of each frequency that base station sends)
Figure 13 is the figure of concrete example that the wireless signal of each frequency that base station sends is shown.Wireless signal 1301～1303 shown in Figure 13 is respectively the wireless signal of frequency f 1～f3.In addition, wireless signal 1301～1303 comprises respectively the positional information corresponding with frequency f 1～f3.For example, comprising position (0,1), (0,2), (1,1), (1,2), (2,1), (2,2) in the wireless signal 1301 of frequency f 1, is each position of white space as frequency f 1.
(decoding of the wireless signal of mobile communications device is processed)
Figure 14 is the block diagram that the example that the decoding of the wireless signal of mobile communications device processes is shown.In Figure 14, to the part mark prosign identical with the part shown in Figure 13, also description thereof is omitted.Mobile communications device 330 for example possesses filter 1411～1413, lsb decoder 1421～1423, signal quality determination portion 1431～1433 and frequency determination section 1440.Mobile communications device 330 receives the wireless signal of the wireless signal 1301～1303 that comprises frequency f 1, f2, f3 in overlay area 321.
Filter 1411 is only obtained the reception signal 1401 of wireless signal 1301 by extracting the signal of the frequency f 1 in the signal receiving.Filter 1411 is to lsb decoder 1421 and the acquired reception signal 1401 of signal quality determination portion 1431 output.Filter 1412 is obtained the reception signal 1402 of wireless signal 1302 by only extracting the signal of the frequency f 2 in the signal having received.Filter 1412 is to lsb decoder 1422 and the acquired reception signal 1402 of signal quality determination portion 1432 output.Filter 1413 is obtained the reception signal 1403 of wireless signal 1303 by only extracting the signal of the frequency f 3 in the signal receiving.Filter 1413 is to lsb decoder 1423 and the obtained reception signal 1403 of signal quality determination portion 1433 output.
Lsb decoder 1421～1423 is respectively to decoding from the reception signal 1401～1403 of filter 1411～1413 outputs, to frequency determination section 1440 output decoded results.Signal quality determination portion 1431～1433 measures respectively from the signal quality of the reception signal 1401～1403 of filter 1411～1413 outputs, the signal quality of having measured to 1440 outputs of frequency determination section.In the example shown in Figure 14, signal quality determination portion 1431～1433 measures respectively receiving intensity 10[dB] ,-2[dB], 14[dB], as the signal quality that receives signal 1401～1403.
Frequency determination section 1440, according to each decoded result from lsb decoder 1421～1423 outputs, is retrieved the frequency corresponding with the position of mobile communications device 330.For example, while in the position of mobile communications device 330 being position (2,1), in the decoded result from lsb decoder 1421,1423, comprise position (2,1) (for example, with reference to Figure 13), so mobile communications device 330 is selected frequency f 1, f3.
Mobile communications device 330 is also chosen in the frequency f 1 of having selected, the higher frequency of signal quality from 1431～1433 outputs of signal quality determination portion in f3.In the example shown in Figure 14, from the signal quality of signal quality determination portion 1433 output (14[dB]) higher than the signal quality from 1431 outputs of signal quality determination portion (10[dB]), so mobile communications device 330 is selected frequency f 3, as the frequency of using in the radio communication with base station 320.
Thus, can determine the frequency used in the radio communication with base station 320.Mobile communications device 330 frequency f 3 that 320 notices are determined by frequency determination section 1440 to base station, the radio communication of the base station 320 of beginning and frequency of utilization f3.
Like this, according to the communicator 100 of execution mode 1 and mobile communications device 200, communicator 100 can be obtained on each position in overlay area spendable frequency and report in overlay area from database 120.Thus, the mobile communications device in overlay area 200 can be determined in the spendable frequency of self-position.Therefore, can increase spendable frequency, and put forward high-frequency utilization ratio.
About communicator 100, mobile communications device 200 and the communication system 300 of execution mode 2, the communicator 100 from execution mode 1, mobile communications device 200 and the different part of communication system 300 are described.
(structure of the communicator of execution mode 2)
Figure 15 is the figure of an example of structure that the communicator of execution mode 2 is shown.In Figure 15, to the additional prosign of the part identical with the part shown in Fig. 1-2, also description thereof is omitted.As shown in figure 15, the communicator 100 of execution mode 2 also possesses selection portion 1510 except the structure shown in Fig. 1-2.Selection portion 1510 for example can realize by the CPU411 shown in Fig. 4-1.
Selection portion 1510 is according to the positional information 151～153 from obtaining section 130 outputs, from spendable frequency F1～F3, select with frequency F1～F3 outside frequency phase specific energy carry out the frequency more than the position of radio communication.For example, selection portion 1510 selects to carry out the maximum frequency in position of radio communication from spendable frequency F1～F3.
Or selection portion 1510 can be selected to carry out the position the 1st of radio communication and two frequencies of more than the 2nd from spendable frequency F1～F3.That is, selection portion 1510 can select to carry out N the many frequency of position the 1st to N (N is the natural number that is less than spendable frequency number) of radio communication from spendable frequency.Thus, in the overlay area of communicator 100, can select to carry out the wide frequency in region of radio communication.
For example, position p2, the p3 corresponding with frequency F1 ... quantity more than the position p2 corresponding with frequency F2 ... quantity or the position p3 corresponding with frequency F3 ..., pm quantity.In the case, selection portion 1510 is for example selected frequency F1.Selection portion 1510 is to the positional information corresponding with selected frequency F1 151 of reporting in portion's 140 output position information 151～153.Reporting portion 140 utilizes wireless signal 161 to report from the positional information 151 of selection portion 1510 outputs.Therefore,, in the example shown in Figure 15, do not report positional information 152,153.
Like this, according to the communicator 100 of execution mode 2, from spendable frequency, select to carry out the many a part of frequencies in position of radio communication, to overlay area, report the positional information of the frequency of having selected.Thus, on one side can reduce the amount of information of reporting to overlay area, Yi Bian report the information of the spendable frequency of more mobile communications device in overlay area.
(the WS region of each frequency)
Figure 16-1st, illustrates the figure of an example in the WS region of each frequency.In Figure 16-1, WS region 1611～161n illustrates respectively the region that frequency f 1～fn is white space.For example, 320 pairs of the base stations positional information that represents the WS region 1611 of the area maximum in the 1611～161n of WS region is carried out wireless transmission, about WS region 1612～161n, does not carry out wireless transmission.
(action of the communication system of execution mode 2)
Figure 16-2nd, illustrates the figure of an example of action of the communication system of execution mode 2.In Figure 16-2, to the part mark prosign identical with the part shown in Fig. 3, also description thereof is omitted.Mobile communications device the 1621, the 1622nd, the mobile communications device same with the mobile communications device 330 shown in Fig. 3.But mobile communications device 1621 is positioned at the WS region 1611 shown in the positional information of the frequency f 1 of reporting from base station 320.Therefore, mobile communications device 1621 can be according to the positional information from base station 320, carries out the radio communication with the mobile communications device 330 of frequency f 1.
On the other hand, mobile communications device 1622 is not positioned at WS region 1611, and is positioned at WS region 1612.In WS region 1612, can carry out radio communication by frequency of utilization f2, but not utilize base station 320 to report the positional information of frequency f 2.Therefore, mobile communications device 1621 cannot be obtained spendable frequency on the position of self terminal, thus do not carry out and mobile communications device 330 between radio communication.
(action of the base station of execution mode 2)
Figure 17 is the flow chart of an example of action that the base station of execution mode 2 is shown.Each following step is for example carried out in the base station 320 of execution mode 2.Step S1701～S1703 shown in Figure 17 is identical with the step S501～S503 shown in Fig. 5.
After step S1703, the area (step S1704) in the WS region that can carry out radio communication, according to the positional information of each frequency of calculating via step S1703, is calculated in base station 320 according to frequency.For example, the number of set of computations P (fk) is carried out respectively in base station 320 for spendable frequency f k | P (fk) | and, the region area A (fk) using result of calculation as frequency f k.
Then, the frequency (step S1705) of the area maximum in the WS region that step S1704 calculates is selected to utilize in base station 320 from spendable frequency.Then, the transmission (step S1706) of the positional information of each position that base station 320 starts to represent to use the frequency of selecting via step S1705 based on wireless signal, and finish a series of action.Utilize each above step, on one side the quantity of 321 positional informations of reporting to overlay area can be reduced in base station 320, amount of information is reduced, Yi Bian report the information of the spendable frequency of more mobile communications device in overlay area 321.
(other example of the action of the communication system of execution mode 2)
Figure 18 is the figure of other example of action that the communication system of execution mode 2 is shown.In Figure 18, to the part mark prosign identical with the part shown in Figure 16-1 or Figure 16-2, also description thereof is omitted.As shown in figure 18, base station 320 can be reported and represent the WS region 1611 of frequency f 1 of area maximum and the positional information of the position of WS region 1612 (corresponding with frequency f 2), and this WS region 1612 covers the region that the WS region 1611 in overlay area 321 does not comprise.
Thus, the mobile communications device 1622 that is positioned at WS region 1612 can, according to the positional information from base station 320, carry out radio communication with the mobile communications device 330 of frequency f 2.Therefore, though can both proportion f1 on 321Zhong optional position, overlay area or frequency f 2 carry out radio communication.
(other example of the action of the base station of execution mode 2)
Figure 19 is other routine flow chart of action that the base station of execution mode 2 is shown.Each following step for example can be carried out in the base station 320 of execution mode 2.Step S1901～S1904 shown in Figure 19 is identical with the step S1701～S1704 shown in Figure 17.After step S1904, the initial value (step S1905) that the frequency setting of the area maximum in 320JiangWS region, base station is frequency sets.
Then, base station 320 calculate in current frequency sets, under each frequency, can carry out radio communication each position and set (step S1906).For example, when frequency sets f is f={f1, f2, f3}, base station 320 zoning P (f1), P (f2), P (f3) with set P (f1) ∪ P (f2) ∪ P (f3).Then, base station 320 judgement utilize that step S1905 calculates with set in whether comprise whole positions (step S1907) of overlay area 321.
In step S1907, be judged as with set in while not comprising whole position of overlay area 321 (step S1907: no), base station 320 joins frequency sets (step S1908) by other frequency that does not add frequency sets, and is back to step S1906.When with set in comprise overlay area 321 whole position time (step S1907: be), base station 320 starts to carry out the transmission based on wireless signal (step S1909) of the positional information of each frequency that frequency sets comprises, and finishes a series of action.
According to each above step, on one side the quantity of 321 positional informations of reporting to overlay area can be reduced in base station 320, amount of information is reduced, Yi Bian for the information of the spendable frequency of each position reporting of overlay area 321.
Figure 20 is the figure of concrete example that the wireless signal of each frequency that base station sends is shown.In Figure 20, to the part mark prosign identical with the part shown in Figure 13, also description thereof is omitted.For example, in the example shown in Figure 11, the area in each WS space of frequency f 1, f2, f3 is respectively | P (f1) |=6, | P (f2) |=5, | P (f3) |=5.
Therefore, as shown in figure 20, for example, base station 320 utilizes wireless signal 1301 to send the positional information as the frequency f 1 of the frequency of the area maximum in WS space.In addition, base station 320, because only utilize frequency f 1 to cover the integral body of overlay area 321, makes up frequency f 1 for the positional information of the frequency f 2 of each position of white space so utilize wireless signal 1302 to send.
But, as shown in figure 20, can from wireless signal 1302, remove each position that the wireless signal 1301 in each position that frequency f 2 is white space comprises.Thus, can further the dip amount of information of information.In the example shown in Figure 20, in wireless signal 1302, comprise position (0,0), (1,0), (2,0), as frequency f 2, are each positions of white space.
Like this, according to the communicator 100 of execution mode 2 and mobile communications device 200, can from spendable frequency, select to carry out the many frequencies in position of radio communication, to overlay area, report the positional information of the frequency of having selected.Thus, on one side can reduce the amount of information of reporting to overlay area, Yi Bian report the information of the spendable frequency of more mobile communications device in overlay area.
About communicator 100, mobile communications device 200 and the communication system 300 of execution mode 3, to the communicator 100 with execution mode 1 or execution mode 2, mobile communications device 200 and the different part of communication system 300 describe.
(structure of the communicator of execution mode 3)
Figure 21 is the figure of an example of structure that the communicator of execution mode 3 is shown.In Figure 21, to the part mark prosign identical with the part shown in Fig. 1-2, also description thereof is omitted.Shown in Figure 21, the communicator 100 of execution mode 3 also possesses calculating part 2010 except the structure shown in Fig. 1-2.Calculating part 2010 is according to the positional information 151～153 from obtaining section 130 outputs, calculates the approximate extents information of scope that each frequency of use in the overlay area that represents approx communicator 100 can be carried out each position of radio communication according to spendable frequency.
In the example shown in Figure 21, it is x1[° that calculating part 2010 is calculated latitude] above scope, as the frequency of utilization f1 in the overlay area of communicator 100, can carry out the scope of each position of radio communication.In addition, calculating part 2010 is calculated latitude for being less than x2[°] scope, as frequency of utilization f2, can carry out the scope of each position of radio communication.In addition, it is y1[° that calculating part 2010 is calculated latitude] above scope, as frequency of utilization f3, can carry out the scope of each position of radio communication.
Calculating part 2010 is to the range information 2011～2013 of reporting portion 140 output and represent the scope calculated respectively for frequency f 1～f3.Reporting the wireless signal 161～163 that portion 140 utilizes respectively frequency f 1～f3 reports from the range information 2011～2013 of calculating part 2010 outputs.
(being similar to of area information)
Figure 22 is the figure that an approximate example of area information is shown.In Figure 22, to the part mark prosign identical with the part shown in Figure 16-1, also description thereof is omitted.Base station 320 calculate in the WS region 1611 that can use frequency f 1 for example can frequency of utilization f1 on whole longitudes latitude be x1[°] more than region 2201, as the region in approximate W S region 1611.
In the case, base station 320 utilizes the wireless signal of frequency f 1 to report expression latitude=x1[°] above information.Be positioned at the mobile communications device in region 2201 because the latitude of the position of this device is x1[°] more than, so can be according to 320 range information of reporting from base station, be judged as and base station 320 between radio communication in can frequency of utilization f1.
Like this, the scope that can carry out the latitude x of radio communication on whole longitude y in base station 320Jiang overlay area 321 is reported as range information (corresponding informance).Or the scope that can carry out the longitude y of radio communication on whole latitude x in 320Ke Jiang overlay area, base station 321 is reported as range information (corresponding informance).
(the approximate concrete example in region)
Figure 23 is the figure that the approximate concrete example in region is shown.Each point shown in Figure 23 represents to use the frequency f 1 in overlay area 321 can carry out each position of radio communication.For example, base station 320 makes the minimum value (being for example zero) of latitude x latitude of 321 from overlay area start to increase, and calculates on whole longitudes of overlay area 321, can carry out the latitude x1 of radio communication in current latitude.Base station 320 will comprise the latitude x1 that calculated and as the information of parameter, as range information, reports.
As the form of reporting signal, considered the group of for example frequency of utilization f1 transmission { frequency, off-position parameter, size sign }.In the case, the form of reporting signal is for example { f1, x1, larger (predetermine is in logic 0 or 1) }.
(approximate processing in region)
Figure 24 is the flow chart of an example that the approximate processing in region is shown.Each following step is for example carried out according to spendable frequency in base station 320.First, base station 320 is set as zero (step S2401) by latitude x.Then, base station 320 makes latitude x increase unit change amount Δ x (step S2402).Then, in base station 320 overlay area 321, calculating latitude is part (each position) (step S2403) more than x.
Then, whether base station 320 judgements are can frequency of utilization f1 (step S2404) in whole parts more than x at the latitude of calculating via step S2403.In step S2404, when the whole parts more than latitude is x can not frequency of utilization f1 (step S2404: no), base station 320 is back to step S2402.
In step S2404, when the whole parts more than latitude is x can frequency of utilization f1 (step S2404: be), the latitude x that base station 320 utilizes now, is similar to the region (step S2405) that can carry out radio communication by frequency f 1, and finishes a series of processing.The range information that base station 320 utilizes wireless signal to report to comprise the latitude x in step S2405.
(cutting apart of region)
Figure 25 is the figure that an example of Region Segmentation is shown.In Figure 25, to the part mark prosign identical with the part shown in Figure 16-1 or Figure 22, also description thereof is omitted.Except reporting in whole longitudes of overlay area 321 range information in region 2201 that can frequency of utilization f1, can also report in whole longitudes of overlay area 321 range information in region 2501 that can frequency of utilization f2.
Thus, overlay area 321 can be divided into can frequency of utilization f1 region 2201 and region 2501 that can frequency of utilization f2.Base station 320 is for example reported and is illustrated in the above range information that can frequency of utilization f1 of latitude x1 by the wireless signal of frequency f 1, utilize the wireless signal of frequency f 2 to report to be illustrated in while being less than latitude x1 can frequency of utilization f2 range information.
(dividing processing in region)
Figure 26 is the flow chart of an example that the dividing processing in region is shown.First, the WS region (step S2601) that each frequency is calculated in base station 320.Then, the frequency (step S2602) of the area maximum in the WS region of calculating via step S2601 is selected in base station 320 from spendable frequency.
Then, the approximate region (step S2603) that can use the frequency of selecting via step S2602 in radio communication is calculated in base station 320.Then, each position (step S2604) of the approximate region of calculating via step S2603 is removed in base station 320 from other WS region of calculating via step S2601.
Then, the frequency (step S2605) of the area maximum in WS region is selected in base station 320 from spendable frequency in unselected frequency.Then, the approximate region (step S2606) that can use the frequency of selecting via step S2605 in radio communication is calculated in base station 320.
Then, whether base station 320 judgements comprise whole positions (step S2607) of overlay area 321 in the set in the WS region of the frequency of selecting via step S2602 or step S2605.While not comprising whole position of overlay area 321 in the set in WS region (step S2607: no), base station 320 is back to step S2604.While comprising whole position of overlay area 321 in the set in WS region (step S2607: be), a series of processing is finished in base station 320.
(concrete example of Region Segmentation)
Figure 27 is the figure that the concrete example of Region Segmentation is shown.By the dividing processing in the region shown in Figure 26, cut apart as shown in figure 27 overlay area 321.
First, utilize step S2601 to calculate each WS region of frequency f 1～fn.Then, in each WS region, make the WS region of frequency f 1 maximum, utilize step S2602 to select frequency f 1.WS region 2711 shown in state 2701 is WS regions of frequency f 1.Then, utilize step S2603, the oblique line part in WS region 2711 is calculated as approximate region.The minimum value of the latitude x of the oblique line part in WS region 2711 is made as to x1.Then, utilize step S2604 from each WS region of frequency f 2～fn, to remove the oblique line part in WS region 2711.
Then, in each WS region of frequency f 2～fn, make the WS region of frequency f 2 maximum, utilize step S2605 to select frequency f 2.WS region 2712 shown in state 2702 is regions of the position of the oblique line portion of removing WS region 2711 in the WS region of frequency f 2.Then, utilize step S2606, the oblique line part in WS region 2712 is calculated as approximate region.The minimum value of the latitude x of the oblique line part in WS region 2712 is made as to x2.Then, utilize step S2604, from each WS region of frequency f 3～fn, remove the oblique line part in WS region 2712.
Then, in each WS region of frequency f 3～fn, make the WS region of frequency f 3 maximum, utilize step S2605 to select frequency f 3.WS region 2713 shown in state 2703 is regions of each position of the oblique line portion in the removal WS region 2711,2712 in the WS region of frequency f 3.Then, utilize step S2606 that the oblique line part (Zone Full) in WS region 2713 is calculated as approximate region.
Thus, overlay area 321 can be divided into WS region 2711～2713.Specifically, the latitude x in overlay area 321 be more than x1 region is WS region 2711 that can frequency of utilization f1.Latitude x in overlay area 321 is less than x1 and is more than x2 region is WS region 2712 that can frequency of utilization f2.The region that latitude x in overlay area 321 is less than x2 is WS region 2713 that can frequency of utilization f3.
(other example of Region Segmentation)
Figure 28 is the figure that other example of Region Segmentation is shown.In Figure 28, white circle represents that the frequency f 1 in overlay area 321 is not each point in WS region.Black circle represents that the frequency f 1 in overlay area 321 is each point in WS region.The overlay area 321 of tiltably cutting apart as shown in figure 28 base station 320.
In the case, reporting the parameter that information comprises is for example x0 and the θ in straight line y=tan θ (x-x0).Specifically, in base station 320, about θ, with 0 °～360 ° of full angles, change, about x0, with the endpoints thereof xmin～xmax in overlay area 321, change.
Then, when whole points that 320You overlay area, base station 321 and straight line y=tan θ (x-x0) surround are WS region, calculate points N.The maximum such θ of quantity N of the point going out in full and parameter θ max and the x0max of x0 are calculated in base station 320, and final shape is made as to y=tan θ max (x-x0max).
(other example of the dividing processing in region)
Figure 29 is the flow chart that other example of Region Segmentation processing is shown.Each following step is for example carried out as the dividing processing in region in base station 320.First, base station 320 is set as zero (step S2901) by Nmax.In addition, base station 320 is set as x0 the minimum value xmin (step S2902) of the latitude x of overlay area 321.
In addition, base station 320 θ is set as-180[°] (step S2903).Then, each point (step S2904) being surrounded by overlay area 321 and straight line y=tan θ (x-x0) is calculated in base station 320.Whether each whole point that then, base station 320 judgements are calculated via step S2904 is WS region (step S2905).
When each points whole in step S2905 is WS region (step S2905: be), each points N (step S2906) of having calculated is calculated in base station 320.Then, base station 320 judgements utilize the quantity N that step S2906 calculates whether to be greater than Nmax (step S2907).
When the several N that calculate in step S2907 are not more than Nmax (step S2907: no), shift to step S2911 base station 320.When the several N that calculate are greater than Nmax (step S2907: be), base station 320 is set as Nmax (step S2908) by the N calculating.In addition, current θ (step S2909) is calculated with θ max in base station 320.In addition, current x0 (step S2910) is set with x0max in base station 320, and shifts to step S2911.
When each points whole in step S2905 is not WS region (step S2905: no), base station 320 makes current θ and unit change amount Δ θ be added (step S2911).Then, base station 320 judges whether current θ is greater than 180[°] (step S2912).When θ is not more than 180[°] time (step S2912: no), base station 320 is back to step S2904.
In step S2912, when θ is greater than 180[°] time (step S2912: be), base station 320 makes current x0 and unit change amount Δ x be added (step S2913).Then, base station 320 judges whether current x0 is greater than xmax (step S2914).When x0 is not more than xmax (step S2914: no), base station 320 is back to step S2903.
When in step S2914, x0 is greater than xmax (step S2914: be), a series of processing is finished in base station 320.Utilize each above step, θ and x0 in can the straight line y=tan θ (x-x0) of computed segmentation overlay area 321.Base station 320 is reported and is comprised the θ that calculated and the range information of x0 according to wireless signal.
Like this, according to the communicator 100 of execution mode 3, mobile communications device 200 and communication system 300, utilize wireless signal to report the corresponding informance that can carry out the scope of radio communication is shown approx, can reduce the amount of information of reporting to overlay area thus.About making to carry out the approximate method of scope of radio communication, be not limited to the above-mentioned scope of utilizing latitude or longitude having illustrated and carry out approximate method or utilize straight line y=tan θ (x-x0) to carry out approximate method.For example, can also make can radio communication scope according to being similar to definite place distance apart or being similar to according to region (residence etc.).
In addition, in execution mode 3, also can similarly from spendable frequency, select to carry out with execution mode 2 the position frequency how of radio communication, and to overlay area, report the positional information of the frequency of having selected.Thus, can further reduce the amount of information of reporting to overlay area.
About communicator 100, mobile communications device 200 and the communication system 300 of execution mode 4, the communicator 100 from execution mode 1～3, mobile communications device 200 and the different part of communication system 300 are described.
(structure of the communicator of execution mode 4)
Figure 30 is the figure of the structure of communicator (its 1) that execution mode 4 is shown.In Figure 30, to the part mark prosign identical with the part shown in Fig. 1-1, Fig. 1-2, also description thereof is omitted.As shown in figure 30, the communicator 3000 (secondary communication device) of execution mode 4 possesses determination portion 110, obtaining section 130 and sending part 3010.Like this, in execution mode 4, determination portion 110 and the obtaining section 130 of the communicator 100 of execution mode 1～3 can be set on the communicator 3000 different from communicator 100.
Communicator 3000 can be applicable to example database server 340 as shown in Figure 3.Obtaining section 130 is to the obtained frequency information 131 of sending part 3010 output.Sending part 3010 to communicator 100 send frequency information 131 based on from obtaining section 130 outputs make position p2 ..., the pm corresponding informance 141 corresponding with spendable frequency.In the transmission of the corresponding informance 141 of communicator 3000, can adopt radio communication or wire communication.
The determination portion 110 of communicator 3000 for example can realize by the CPU431 shown in Fig. 4-3 and additional storage 433.The obtaining section 130 of communicator 3000 and sending part 3010 for example can be realized by CPU431 and communication interface 435.
Figure 31 is the figure of the structure of communicator (its 2) that execution mode 4 is shown.In Figure 31, to the part mark prosign identical with the part shown in Fig. 1-1, Fig. 1-2, also description thereof is omitted.As shown in figure 31, the communicator 100 (first communication device) of execution mode 4 for example replaces the determination portion shown in Fig. 1-1, Fig. 1-2 110 and obtaining section 130 and possesses acceptance division 3110.Acceptance division 3110 receives the corresponding informance 141 being sent by communicator 3000.Acceptance division 3110 exports to reporting portion 140 corresponding informance 141 having received.
Reporting portion 140 utilizes wireless signal 142 to the overlay area of communicator 100, to report from the corresponding informance 141 of acceptance division 3110 outputs.Like this, communicator 3000 that can be different by the communicator 100 from reporting corresponding informance 141 communicates determining of each position or the obtaining of corresponding informance 141 of the overlay area of device 100.Acceptance division 3110 for example can be realized by the CPU411 shown in Fig. 4-1 and wired communication interface 416.
(action of the database server of execution mode 4)
Figure 32 is the flow chart of an example of action that the database server of execution mode 4 is shown.First, database server 340, according to the transmitted power such as the base station 320 of 320 notices from base station or transmitting antenna figure etc., carrys out the scope (step S3201) of the overlay area 321 of calculation base station 320.
Then, database server 340, according to the scope of the overlay area 321 of calculating by step S3201, is obtained spendable frequency (step S3202) on each position comprising in overlay area 321 from database 120.Then, database server 340, according to the spendable frequency obtaining by step S3202, generates the positional information (step S3203) that can carry out the position of radio communication between expression and mobile communications device 330 according to frequency.
Then, the positional information (step S3204) of database server 340 each frequency that 320 transmissions are calculated via step S3203 to base station, and finish a series of action.Utilize each above step, database server 340 can be obtained spendable frequency 320 transmissions to base station on each position of overlay area 321 from database 120.
(action of the base station of execution mode 4)
Figure 33 is the flow chart of an example of action that the base station 320 of execution mode 4 is shown.Each following step for example, in self power supply making time or the transmitted power of self when change, is carried out in base station 320.First, base station 320 is to the transmitted power (step S3301) of database server 340 notice our stations.Then, whether base station 320 judgements receive the positional information (step S3302) of each frequency from database server 340, and wait for until receive (step S3302: no loop).
When having received the positional information of each frequency from database server 340 in step S3302 (step S3302: be), the transmission based on wireless signal (step S3303) of the positional information of each frequency that base station 320 starts to have received, and finish a series of action.Utilize each above step, spendable frequency on each position of overlay area 321 can be reported in base station 320 in overlay area 321.
Like this, according to the communicator 100 of execution mode 4 and communication system 300, communicator 3000 that can be different by the communicator 100 from reporting corresponding informance 141 communicates determining of each position or the obtaining of corresponding informance of the overlay area of device 100.
Here, in execution mode 1, illustrated and utilized communicator 3000 to carry out the determining or the structure obtaining of corresponding informance of each position of overlay area, but can be for utilizing communicator 3000 to carry out the determining or the structure obtaining of corresponding informance of each position of overlay area in execution mode 2,3.For example, can from communicator 100, save execution mode 2 communicator 100 selection portion 1510 and be arranged in communicator 3000.In addition, can from communicator 100, save execution mode 3 communicator 100 calculating part 2010 and be arranged in communicator 3000.
As discussed above, according to communicator, mobile communications device, communication system and communication means, can realize the raising of the utilization ratio of frequency.
111,151～153,231,701 positional informations
131,241,271 frequency informations
141 corresponding informances
142,161～163,1301～1303 wireless signals
200,330,1621,1622 mobile communications devices
261 quality informations
300 communication systems
310 electric wave towers
311 prohibited areas
320 base stations
321 overlay areas
340 database servers
410,420,430 information processors
419,429,439 buses
1200 send frame
1210 report signal slot
1401～1403 receive signal
1411～1413 filters
1611～161n, 2711～2713 WS regions
2011～2013 range information
2201,2501 regions
1. a communicator, is characterized in that, this communicator possesses:
Determination portion, its determine can and mobile communications device between carry out each position that the overlay area of this device of radio communication comprises;
Obtaining section, its database that can not access from described mobile communications device, obtains the frequency information that is illustrated in the frequency that can use on each position of being determined by described determination portion in described radio communication; And
Report portion, it utilizes wireless signal to described overlay area, to report the corresponding corresponding informance of the frequency that described each position is used with described energy of the frequency information based on being obtained by described obtaining section.
The described portion of reporting utilize with described can with the wireless signal of frequency same frequency report and represent can carry out by the described frequency that can use the described corresponding informance of the position of described radio communication in described overlay area.
3. communicator according to claim 2, is characterized in that,
Described report portion using the described frequency that can use respectively as object frequency, utilize the wireless signal of described object frequency to report to represent and can carry out by described object frequency the described corresponding informance of the position of described radio communication in described overlay area.
4. communicator according to claim 1, is characterized in that,
This communicator possesses selection portion, and this selection portion, from the described frequency that can use, is selected to compare with other frequency in the described frequency that can use the more frequency in position that can carry out described radio communication,
The described portion that reports reports to described overlay area and makes the frequency described corresponding informance corresponding with described each position selected by described selection portion.
5. communicator according to claim 1, is characterized in that,
The described portion of reporting utilizes wireless signal to report to represent approx and can carry out by the described frequency that can use the described corresponding informance of the scope of described radio communication in described overlay area.
Described corresponding informance means can be carried out the latitude scope of described radio communication or can be carried out by the described frequency that can use the information of the longitude scope of described radio communication on each latitude by the described frequency that can use on each longitude in described overlay area.
7. according to the communicator described in any one in claim 1～6, it is characterized in that,
The described frequency that can use is the frequency that there is no use in the different particular communications system of the communication system from described radio communication.
8. a mobile communications device, is characterized in that, this mobile communications device possesses:
Acceptance division, it receives the wireless signal of being reported to the overlay area of described communicator by other communicator;
Obtaining section, its from the wireless signal being received by described acceptance division, obtain make each position that described overlay area comprises and on described each position with described communicator between radio communication in the corresponding corresponding informance of the frequency that can use;
Determination portion, it determines the position of this device;
Search part, it retrieves the described frequency that can use corresponding with the determined position of described determination portion from the corresponding informance of being obtained by described obtaining section; And
Department of Communication Force, it utilizes the frequency being retrieved by described search part, and between described communicator, carries out described radio communication.
9. mobile communications device according to claim 8, is characterized in that,
Described acceptance division receives the described wireless signal of the Candidate Frequency of the described frequency that can use,
Described obtaining section, from the wireless signal of the described Candidate Frequency that received by described acceptance division, obtains and represents can carry out by described Candidate Frequency the described corresponding informance of the position of described radio communication in described each position.
10. mobile communications device according to claim 8 or claim 9, is characterized in that, this mobile communications device possesses:
Determination part, it is according to the wireless signal that received by described acceptance division, measure under the frequency being retrieved by described search part and described communicator between communication quality; And
Selection portion, it,, according to the communication quality being determined by described determination part, selects frequency to be used from the frequency being retrieved by described search part,
Described Department of Communication Force utilizes between the selected frequency of described selection portion and described communicator and carries out described radio communication.
11. mobile communications devices according to claim 10, is characterized in that,
Described selection portion, from the determined frequency of described determination portion, is selected the highest frequency of communication quality being determined by described determination part.
12. 1 kinds of communication systems, is characterized in that, this communication system comprises:
Communicator, its determine can and mobile communications device between carry out each position that the overlay area of this device of radio communication comprises, the database that can not access from described mobile communications device, obtain the frequency information that is illustrated in the frequency that can use on determined each position in described radio communication, utilize wireless signal to described overlay area, to report the corresponding corresponding informance of the frequency that described each position is used with described energy of the frequency information based on obtained; And
Mobile communications device, it receives the wireless signal of reporting to the overlay area of described communicator from described communicator, from received wireless signal, obtain described corresponding informance, determine the position of this device, corresponding with the determined position described frequency that can use of retrieval from obtained corresponding informance, by carrying out described radio communication between the frequency that retrieves and described communicator.
13. 1 kinds of communication meanss, is characterized in that,
Each position that the definite overlay area that can carry out the described communicator of radio communication between communicator and mobile communications device comprises,
The database that can not access from described mobile communications device, obtain the frequency information that is illustrated in the frequency that can use on determined each position in described radio communication,
Described communicator utilizes wireless signal to described overlay area, to report the corresponding corresponding informance of the frequency that described each position is used with described energy of the frequency information based on obtained,
Described mobile communications device receives described wireless signal,
From received described wireless signal, obtain described corresponding informance,
Determine the position of described mobile communications device,
The retrieval described frequency that can use corresponding with determined described position from obtained described corresponding informance,
The described frequency that utilization retrieves is carried out described radio communication between described communicator and described mobile communications device.
14. 1 kinds of communicators, is characterized in that, this communicator possesses:
Determination portion, each position that its definite overlay area that can carry out described other communicator of radio communication between other communicator and mobile communications device comprises;
Obtaining section, its database that can not access from described mobile communications device, obtains the frequency information that is illustrated in the frequency that can use on determined each position of described determination portion in described radio communication; And
Sending part, it sends the corresponding corresponding informance of the frequency that described each position is used with described energy of the frequency information based on being obtained by described obtaining section to described other communicator.
15. 1 kinds of communication systems, is characterized in that, this communication system comprises:
Mobile communications device;
First communication device, carries out radio communication between itself and the described mobile communications device in the overlay area of this device; And
Secondary communication device, it determines each position that described overlay area comprises, the database that can not access from described mobile communications device, obtain the frequency information that is illustrated in the frequency that can use on determined each position in described radio communication, and the corresponding corresponding informance of the frequency that described each position is used with described energy of the frequency information of transmission based on obtained
Described first communication device utilizes wireless signal to described overlay area, to report the corresponding informance being sent by described secondary communication device,
Described mobile communications device receives the wireless signal of reporting from described first communication device, from the wireless signal receiving, obtain described corresponding informance, determine the position of this device, the retrieval described frequency that can use corresponding with determined position from obtained corresponding informance, the frequency that utilization retrieves, and between described first communication device, carry out described radio communication.
CN201280066508.0A 2012-01-10 2012-01-10 Communication device, mobile communication device, communication system, and communication method CN104041100A (en)
PCT/JP2012/050286 WO2013105220A1 (en) 2012-01-10 2012-01-10 Communication device, mobile communication device, communication system, and communication method
CN104041100A true CN104041100A (en) 2014-09-10
ID=48781196
CN201280066508.0A CN104041100A (en) 2012-01-10 2012-01-10 Communication device, mobile communication device, communication system, and communication method
US (1) US9763121B2 (en)
EP (1) EP2804412A4 (en)
JP (1) JP5871015B2 (en)
KR (1) KR101654444B1 (en)
CN (1) CN104041100A (en)
WO (1) WO2013105220A1 (en)
JP6408271B2 (en) * 2014-07-10 2018-10-17 株式会社トヨタＩｔ開発センター White space information transmitting method and white space information providing apparatus
JPWO2017154508A1 (en) * 2016-03-11 2019-01-17 ソニー株式会社 Server apparatus, information processing apparatus and method
WO2009104689A1 (en) * 2008-02-21 2009-08-27 株式会社トヨタＩｔ開発センター Mobile radio communication system and radio communication method
JP2011029770A (en) * 2009-07-22 2011-02-10 Kddi Corp Reference signal transmission power control information generation device, method of controlling reference signal transmission power, and computer program
CN102202312A (en) * 2010-03-25 2011-09-28 索尼公司 Management server, base station, communication system, and communication method
JP5586051B2 (en) * 2010-06-21 2014-09-10 独立行政法人情報通信研究機構 Cognitive radio communication system and method
2012-01-10 JP JP2013553126A patent/JP5871015B2/en not_active Expired - Fee Related
2012-01-10 WO PCT/JP2012/050286 patent/WO2013105220A1/en active Application Filing
2012-01-10 CN CN201280066508.0A patent/CN104041100A/en not_active Application Discontinuation
2012-01-10 EP EP12865105.6A patent/EP2804412A4/en not_active Withdrawn
2012-01-10 KR KR1020147018460A patent/KR101654444B1/en active IP Right Grant
2014-06-16 US US14/305,180 patent/US9763121B2/en active Active
WO2013105220A1 (en) 2013-07-18
EP2804412A1 (en) 2014-11-19
US20140295863A1 (en) 2014-10-02
EP2804412A4 (en) 2015-12-30
JP5871015B2 (en) 2016-03-01
KR20140105523A (en) 2014-09-01
KR101654444B1 (en) 2016-09-05
JPWO2013105220A1 (en) 2015-05-11
US9763121B2 (en) 2017-09-12
CN101690043B (en) 2015-08-19 Apparatus for operating communication is with the method for share air link resources, wireless terminal and radio communication device
CN1668936A (en) 2005-09-14 Method and system for estimating position of mobile device
JP4855340B2 (en) 2012-01-18 Area map construction system that creates area maps based on communication quality information
EP2140692A1 (en) 2010-01-06 Enhanced zone determination