CN1389988A - Multiplex commuicator with radio transceivers in several regions and its working method - Google Patents
Multiplex commuicator with radio transceivers in several regions and its working method Download PDFInfo
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Abstract
The invention relates to the device of multiple multiplex wireless transceiver of the base-band controller of the local area wireless network. The device comprises at least the base-band controller of the local area wireless network, the wireless transceiver in local area and the antenna. There are two or more said local area wireless transceivers working at 2.4-2.4835 GHz with one end connected to the antenna and another connected to the base-band controller. There is only one base-band controller whose memory stores the application program of the multiplex operation. Based on the application program, the device carries multiplex operating the said wireless transceives through the connected data transferring and control ports and multiple addresses. The device increases the relevant wireless communication terminals and communication quality.
Description
Affiliated field
The present invention relates to a kind of communicator and method of work of multiplexed a plurality of regional wireless transceivers, belong to the cordless communication network equipment technical field.
Background technology
When history strides forward 21 century the gate time, the world has entered networking, informationalized science and technology epoch.Along with the progress of epoch and mechanics of communication, communication modes also promptly develops into wired and wireless coexistence by wired.And the application of radio wave communication also no longer is confined to the mobile communcations system of present pandemic GSM, GPRS and the 3rd third-generation mobile communication CDMA wide area network in future formation; In short distances such as office, family, community (from several meters of zero points to the scope of 100-200 rice), also can be connected to each other the information of carrying out transmission and exchange between diverse network terminal, the information equipment with wireless mode.The latter is otherwise known as: zonal wireless telecommunication system.That wherein be widely known by the people most is area wireless network (802.11 agreement) and Bluetooth technology (bluetooth or claim 802.15 agreements)." bluetooth (Bluetooth) " speech of the short-distance wireless communication that was taken the lead in proposing by Ericsson in 1994 is the designate of new wireless communication technology standard, also is " allowing stube cable dissolve into the air ", the fresh information technological revolution that realizes network terminal wireless penetration.Along with the quick decline of manufacturing cost and price, use the communicator of above-mentioned technology that surprising user's growth rate is arranged.
Below do brief description with regard to these two kinds zonal wireless telecommunication system equipment (area wireless network 802.11 and Bluetooth protocol):
The equipment of zonal wireless communication system devices is formed and can be included: antenna 4, regional wireless transceiver module 2 (RF module or RF), base band (baseband) controller module 1 and other alternative add-on modules; As shown in Figure 1.Wherein the function finished of baseband controller module 1 is: the data packet that meets the specific wireless host-host protocol that receives from antenna 4 through control and data transmission interface 3 receiving area wireless transceiver modules 2, and the data packet that will meet the specific wireless transmission format protocol, transfer to regional wireless transceiver module 2 by control and data transmission interface 3, and finish serial parallel conversion, comparison, coding/decoding, encrypt/decrypt, check code generation/check, frequency hopping generates and desired other relevant works of agreement (for example: be connected and control Link control, medium access control Media Access control ... Deng), send with antenna 4 again.
Utilize digital modulation (Modulation) technology to convert the radio wave signal of high frequency (2.4GHz or 5GHz) to and the function of regional wireless transceiver module 2 is the digital information that will send, maybe utilize demodulation (Demodulation) technology to convert digital information to high frequency (2.4GHz or the 5GHz) radio wave signal that receives.This transceiver module 2 receives with specific transmitting-receiving frequency (channel) and sends these data messages.And this transmitting-receiving frequency can constantly jump to another frequency (promptly so-called " frequency hopping " Hopping) by a frequency in time in bluetooth equipment, and frequency hopping can reduce the interference phenomenon and increase transmission security between signal.
Along with the quick progress of CPU design with manufacturing process technology, the performance of CPU and the speed of service promote significantly, as long as the sequential, the clock (clock) that utilize software program to control well between each signal are handled problems with real-time (real time), the speed of service of the CPU in the baseband controller and performance thereof enough provide the time sub operation and the demand of controlling of a plurality of regional wireless transceivers (RF module) module.
Along with the quick progress of Electronic Design and manufacturing process technology, the price of regional wireless transceiver module (RFModule) is dropped rapidly to quite cheap thereupon, makes the transceiver module cost only account for the minimum ratio of this zone wireless device product price.In addition, along with the quick progress of regional wireless transceiver (RF Module) design with manufacturing process technology, be used under the situation of certain power, the effective operating distance of its radio wave also increases considerably; For example, TIX adopts the sensitivity of transceiver module of the MC13180 model of Bluetooth technology can reach-84dBm, than bluetooth standard code-70dBm is also much higher.And the raising of sensitivity makes its operating distance can expand 120m to, has improved 4 times than the regulation of bluetooth standard.Because effective working distance has increased, effective covering scope of its signal is the expansion of duplicate ratio especially.Yet, in the territorial scope of big several times or tens of times, also will have more area wireless network equipment to propose the demand of wireless telecommunications, the corresponding problem of therefore also having derived certainly than the past.For example: at wireless the Internet gateway, LAP LAN Access Point (Wireless Access Point, AP) in the equipment, if more user side wireless telecommunications system requires incoming communication, because numerous users must share frequency range, so, resulting separately actual frequency range is narrow more, and transmission speed is also slow more, and the usefulness of transmission is also poor more.In addition, wireless the Internet gateway, local area network (LAN) access device for Bluetooth technology, because the restriction of standard (be at present: bluetooth 1.1) can only be carried out communication with 7 ustomer premises access equipments at one time, other ustomer premises access equipments then can only be in wait (Standby) state.This restriction has become the big bottleneck on its expansion operating distance or the scope of application.
At present, the method that people can take to increase a plurality of WAP (wireless access point) (AP) equipment usually solves this because of the multiple users share frequency range causes transmitting the usefulness variation, and the few problem of active user number that can support access simultaneously with this bluetooth equipment.But, be not difficult to find and be understood that: the equipment investment expense that makes up a plurality of WAP (wireless access point) (AP) will increase, also need for each AP building network, lay power line etc., and it is more that the frequency that sends with receiving might take place between each AP, because of identical, the close problem that produces the phase mutual interference of its frequency of utilization.
Summary of the invention
The communicator that the purpose of this invention is to provide the multiplexed a plurality of wireless transceivers of a kind of area wireless network baseband controller, this device both can increase a plurality of regional wireless transceivers, so that can increase a plurality of wireless communication terminal equipments corresponding, satisfy the wireless communication needs of people's sharp increase with it; Can reduce investment cost again, can also solve effectively that the signaling rate that increases radio communication device and supervene is slow, the problem of serious interference.
Another object of the present invention provides the method for work of the communicator of the multiplexed a plurality of wireless transceivers of a kind of area wireless network baseband controller.
The object of the present invention is achieved like this: the device of the multiplexed a plurality of wireless transceivers of a kind of area wireless network baseband controller, and this device includes at least: area wireless network baseband controller, regional wireless transceiver and antenna; It is characterized in that: described regional wireless transceiver is two or more, works alone respectively separately in the 2.4-2.4835GHz frequency range, and the one end connects antenna, and the other end is connected to baseband controller respectively; Described baseband controller is one, and its store memory contains the application program of this device multiplex operation; By transfer of data and control interface and a plurality of address thereof that this device and above-mentioned a plurality of regional wireless transceivers are connected respectively, above-mentioned two or more wireless transceivers are carried out multiplex operation by this application program.
The multiplexed operation of central processor CPU in the described wireless network baseband controller is time division multiplexing or frequency division multiplexing or code division multiplexing.
Described regional wireless transceiver can have a frequency range that is operated in 5GHz.
Described two or more regional wireless transceivers can be the different structure of different production firms manufacturing or the module of different model.
Can between baseband controller and each regional wireless transceiver, set up a complex programmable logic device (CPLD) or on-site programmable gate array FPGA device, as offset buffer (shift register) or push-up storage (FIFO) or comparator, be used for the data message of buffer-stored baseband controller when multiplexed transmitting-receiving is operated and the computing of this baseband controller part monitoring program of execution.
Another object of the present invention is achieved in that the method for work of a plurality of wireless transceiver devices of the multiplexed running of a kind of area wireless network baseband controller, it is characterized in that: comprise the following steps:
(1) CPU in the area wireless network baseband controller is that each regional wireless transceiver produces a transmitting-receiving work disposal sequential, this transmitting-receiving work disposal sequential is the transmitting-receiving cycle with half, one or more time slot (time slot), and CPU should stagger the transmitting-receiving work disposal sequential of each transceiver mutually and makes it asynchronous to each other;
(2) before the transmitting-receiving work disposal cycle of each regional wireless transceiver begins, the CPU in the area wireless network baseband controller is provided with this zone wireless transceiver full duplex transmission and sends and the initial state that receives;
(3) before the transmitting-receiving cycle begins, CPU in the area wireless network baseband controller determines time of current transmission cycle according to the kind of wireless protocols package, and calculates and other the current different transmission of regional wireless transceiver in the operating state and modes of receive frequency and/or modulation and demodulation of being in for it;
(4) CPU in the area wireless network baseband controller sends instruction, does to send the operation of signal in regular turn for the current regional wireless transceiver that is under the transmission cycling state;
(5) CPU in the area wireless network baseband controller receives instruction, does the operation of received signal in regular turn for the current regional wireless transceiver that is under the receiving cycle operating state.
The order of above-mentioned steps (4), (5) can be interlocked or exchange and be carried out.
The order of above-mentioned steps (2), (3) is commutative.
The communication protocol that described area wireless network baseband controller is supported is Bluetooth protocol or 802.11 agreements or Home RF agreement.
This zone wireless transceiver full duplex transmission that is provided with in the described step (2) sends and the initial state that receives, and also can change into the initial state that this zone wireless transceiver half-duplex transmission sends or receives is set.
The present invention is a kind of communicator that utilizes the multiplexed a plurality of wireless transceivers of area wireless network baseband controller of Bluetooth technology or other regional wireless communication protocols, as long as this device is spent more the hardware costs of the regional wireless transceiver module of several less expensive of expense in the product manufacturing, the one-at-a-time operation monitoring program software that is aided with exploitation again, just can increase by one or several regional wireless transceivers are set, be equivalent to establish newly one or several wireless transmission communication road.And because these regional wireless transceivers are controlled by same baseband controller, this controller can provide a plurality of addresses at a plurality of regional wireless transceivers (RF) module, and the operation method of utilizing its CPU with its transmitting-receiving frequency of a plurality of regional wireless transceivers of supporting simultaneously or sequential or coding stagger each other and realize multiplexed, to avoid producing the signal interference phenomenon, and then increase a plurality of wireless communication terminal equipments corresponding with it, satisfy the wireless communication needs of people's sharp increase.Can increase radio communication terminal device effectively like this, can significantly reduce manufacturing cost again, also reduce investment cost, and obtain preferable wireless receiving and dispatching quality, prevent that the signaling rate of supervening usually is slow, the problem of serious interference.
Description of drawings
Fig. 1 is that the structure of the regional radio communication device of use is now formed schematic diagram.
Fig. 2 is that the communicator basic structure of the multiplexed a plurality of wireless transceivers of the regional wireless network baseband controller of the present invention is formed schematic diagram.
Fig. 3 is that the another kind of basic structure of communicator of the multiplexed a plurality of wireless transceivers of the regional wireless network baseband controller of the present invention is formed schematic diagram.
Fig. 4 be the multiplexed a plurality of wireless transceivers of the regional wireless network baseband controller of the present invention one time-division of communicator multiplexing embodiment basic structure form schematic diagram.
Fig. 5-Fig. 7 be the multiplexed a plurality of wireless transceivers of the regional wireless network baseband controller of the present invention one time-division of communicator multiplexing embodiment three sequential schematic diagrames.
Embodiment
Referring to Fig. 2, the present invention is the device of the multiplexed a plurality of wireless transceivers of a kind of area wireless network baseband controller, and this device includes at least: baseband controller 1, two or more wireless transceiver 20,21 ... 2n and antenna 4; These wireless transceivers 20,21 ... 2n works alone respectively separately in the 2.4-2.4835GHz frequency range, and the one end connects antenna 4, and the other end is connected to baseband controller 1 respectively.Store memory in the baseband controller 1 contains the application program of this device multiplex operation; By this baseband controller 1 of this application program be modeled into a plurality of virtual baseband controllers 10,11 ... 1n, by transfer of data and control interface 3 and a plurality of address thereof that is connected respectively with above-mentioned a plurality of regional wireless transceivers, to above-mentioned two or more wireless transceivers 20,21 ... 2n carries out multiplex operation.The multiplexed operation of the CPU here is time division multiplexing or frequency division multiplexing or code division multiplexing.The operating frequency range of these wireless transceivers is 2.4-2.4835GHz, and in a plurality of regional wireless transceivers a frequency range that is operated in 5GHz can be arranged.And above-mentioned two or more regional wireless transceivers can be the different structure of different vendor's manufacturing or the transceiver module of different model.
Significantly lifting along with CPU speed and usefulness, and operating system (OS) control enriching constantly and developing of instruction and technology, as long as make people control the staggered of clock, sequential well with time-division, frequency division or sign indicating number divide operation fast, can be embedded among the ROM in the application program with the multiplex operation of baseband controller of the present invention, promptly be stored in advance in its operating system, become a multiplexed real-time application that drives a plurality of transceivers of controlling in its operating system.This being contained the operating system of multiplexed application program (comprising: the relevant parameter of giving unique address of this wireless device, certain wireless protocols with relevant data again ...) organically combine, form file system, be solidificated in the memory of baseband controller, just can finish the various functions of the specific a plurality of regional wireless transceivers of multiplexed control, such system, i.e. " SOC " (System On Chip) or can be described as: embedded system (Embedded System).Can be at baseband controller 1 and a plurality of transceivers 20,21, set up a complex programmable logic device (CPLD) or on-site programmable gate array FPGA device 5 (referring to shown in Figure 3) between the 2n, as offset buffer (shift register) or push-up storage (FIFO) or comparator, be used for the data message of buffer-stored baseband controller when multiplexed transmitting-receiving is operated and the computing of this baseband controller part monitoring program of execution, thereby can reach the power consumption of CPU when multiplexed transmitting-receiving is operated and the performance of its Flexible Design of increase that reduces significantly in the baseband controller.For example: when need increasing an identical isolated area wireless transceiver, only need to revise the data of its setting or can differentiate (Auto Configure) automatically, need not change software just can very fast realization it.And, even need to change or upgrade software also only needs again burning program or uploads software to ROM, can finish easily, the freedom of the regional wireless transceiver module of selecting multiple different model that different vendor makes and specification etc. can also be arranged.
In fact, on 802.11 area wireless network devices, there has been manufacturer to deliver similar products recently, the composition of its relevant portion is: one 802.11 baseband controller is connected to the stand-alone transceiver module of a 802.11a (2.4GHz) and the stand-alone transceiver module of a 802.11b (5GHz), but the difference of itself and maximum of the present invention is: this baseband controller can only be selected one and come work (promptly 2 selecting 1) in above-mentioned two transceiver modules, rather than utilize clock and sequential, the multiplexing technique that frequency or coding stagger mutually allows plural transceiver module come " simultaneously " work.Other difference also has: the present invention supports a plurality of (two or more) transceiver module in same frequency range (as 2.4GHz-2.4835GHz), and the application program of utilizing CPU in the baseband controller staggers their working channels to each other (annotate: Bluetooth technology can mark off 79 frequency hopping channels between 2.4GHz-2.4835), disturbs with the signal of avoiding producing to each other.Application software of the present invention is to be embedded among the ROM, and the operation of carrying out software upgrading, displacement or upgrading is very easy to.Apparatus of the present invention also have characteristics: it must be same manufacturer or same model or same structure that a plurality of (two or more) distinct area wireless transceiver module that this device uses does not limit, therefore can increase another or several regional wireless transceiver module at an easy rate for satisfying the demands, or original one or several regional wireless transceiver modules are done upgrade job.This provides very big free space to the research staff of radio network device in the selection of the elasticity of product design and module.
The present invention also provides a kind of method of work of communicator of the multiplexed a plurality of wireless transceivers of area wireless network baseband controller that utilize Bluetooth technology or other regional wireless communication protocols, and it comprises the following steps:
(1) CPU in the area wireless network baseband controller is that each regional wireless transceiver produces a transmitting-receiving work disposal sequential, this transmitting-receiving work disposal sequential is the transmitting-receiving cycle with half, one or more time slot (time slot), and CPU should stagger the transmitting-receiving work disposal sequential of each transceiver mutually and makes it asynchronous to each other.
Transmitting-receiving work disposal sequential is the cpu monitor program control zone beginning and the end in wireless transceiver transmitting-receiving cycle, each transmitting-receiving sequential can be that an original clock respectively adds a time difference (as: time offset A, time offet B etc.), CPU should allow the starting point of the transmission of each transceiver and receiving cycle to stagger mutually suitable blanking time, the time difference time offset of above-mentioned each transceiver can use: n * time slot+time offset represents that wherein n is: more than or equal to 0 and less than the integer of the exercisable channel number of this radio communication device; For example: Bluetooth protocol stipulates that exercisable channel number can be 79 or 23, and the length of time slot is generally fixed value, is to be defined by specific regional wireless communication protocol.Wherein Zui Da time difference value is less than half or a time slot.And the transmitting-receiving sequential can half, one or more time slot (time slot) is the transmitting-receiving cycle.Use what time slots as the transmitting-receiving cycle, normally be decided by the kind (Type) of current this wireless protocols package that will send or receive, this kind (Type) is then formulated or is parsed by the CPU of baseband controller.
(2) before the transmitting-receiving work disposal cycle of each regional wireless transceiver begins, the CPU in the area wireless network baseband controller is provided with this zone wireless transceiver full duplex transmission and sends and the initial state that receives.If the transfer of data standard of this wireless transceiver is to adopt single-line type or half-duplex mode, then this step should be the initial state that this zone wireless transceiver half-duplex transmission sends or receives is set.Usually, one of each transceiver sends or receiving cycle all will maintain one or more slot time, and full duplex or half-duplex alternatively send and receive.
(3) before the transmitting-receiving cycle begins, CPU in the area wireless network baseband controller determines time of current transmission cycle according to the kind of wireless protocols package, and calculates and other the current different transmission of regional wireless transceiver in the operating state and modes of receive frequency and/or modulation and demodulation of being in for it; This step (3) can with step (2) exchange sequence.
The zone wireless transceiver can (for example: different channel time-division bluetooth bluetooth agreement) is carried out the transmitting-receiving of wireless signal, and (for example: bluetooth can be divided 79 or 23 frequency hopping channels in the public frequency range of ISM 2.4GHz-2.4835GHz meeting this zone wireless transmission protocol, 802.11 agreements then can be divided 14 frequency hopping channels), and for fear of the interference that produces because operating frequency is identical between each transceiver channel, the application program of CPU should be it and selects a transmitting-receiving working channel with other current each regional wireless transceiver different frequencies just at work when the send-receive clock cycle of this transceiver begins.For example, if Bluetooth protocol is this transceiver and chooses one in bluetooth (79-m) or (23-m) in the individual frequency hopping channel, wherein m is in m the shared channel number of regional wireless transceiver in the operating state for other are current.If two transceivers that this baseband controller articulates work in the different frequency scope fully, the RF module of the RF module of the external 2.4GHz of Local Area Network baseband controller and a 5GHz for example, then the CPU of this controller just need not to carry out the work that frequency staggers.Or calculate frequency hop sequences (Hopping Sequence) respectively for each transceiver by CPU, and the frequency hop sequences of each transceiver also should stagger each other with other each current frequency hop sequences that is in the regional wireless transceiver in the operating state; Promptly the channel of each regional wireless transceiver use is inequality at one time.Even in the ideal state that the frequency hop sequences that can't realize with each regional wireless transceiver in running order staggers fully, at least also will be with minimum because of using same channel to cause the probability of phase mutual interference to reduce to.In case certain transceiver is finished the transmitting-receiving cycle, its shared channel also discharges thereupon.
(4) CPU in the area wireless network baseband controller sends instruction, does to send the operation of signal in regular turn for the current regional wireless transceiver that is under the transmission cycling state;
(5) CPU in the area wireless network baseband controller receives instruction, makes the operating procedure of received signal in regular turn for the current regional wireless transceiver that is under the receiving cycle operating state.This step (5) can be interlocked or exchange with the order of step (4) and be carried out.
The direct object that CPU in these two steps in the area wireless network baseband controller sent or received instruction is: " interface " of the transfer of data output/input of this baseband controller.This interface can be that serial ports or data transmit buffer and offset buffer, or A/D (analog/digital) mouthful with D/A (digital-to-analog) mouthful, and by should " interface " interconnecting with the data transmission interface of regional wireless transceiver in proper order.Send and received signal for current each regional wireless transceiver that is under transmission or the receiving cycle operating state in regular turn with these interfaces again.Need to prove: this CPU comes simultaneously above-mentioned a plurality of interfaces to be carried out full duplex or half-duplex receiving and transmitting data signals by multiplex mode in step (4) and step (5).
Wherein step (4) mode staggered with step (5) or that exchange is carried out can be: " after the instruction of execution in step (4), an instruction of execution in step (5); An and then instruction of execution in step (4) ... " so alternatively carry out, perhaps can be: " after the instruction more than 1 or 1 of execution in step (4), the instruction more than 1 or 1 of execution in step (5); And then the instruction more than 1 or 1 of execution in step (4) ... " mode alternatively carry out;
Below in conjunction with Fig. 4-Fig. 7 a time-division multiplexing embodiment structural representation and its send with the received signal sequential chart and introduce method of work of the present invention:
Referring to Fig. 4, baseband controller 1 time division multiplexing of this embodiment is controlled with support four regional wireless transceiver A, B, C, D (representing it with RFA, RFB, RFC and RFD respectively among the figure), and provides corresponding control and data transmit-receive interface: B_A, B_B, B_C, B_D respectively to these four transceivers.
Referring to Fig. 5, after sending or receiving cycle begin, T1 is after the time for process, baseband controller CPU assigns control command C (T2 when this control command C accounts for, its content can be: the transmission be about to begin or/and accepting state or/and channel value or/and modulation system etc. are set) to the RF module, pass through free time T3 again after, baseband controller CPU assigns the instruction D (T4 when this control command D accounts for) that data send or receive to the RF module, after passing through T5 again, this end cycle begins another new cycle; So constantly circulation, and the length in cycle to be clock by the fundamental frequency controller decide according to related wireless protocols.
Referring to Fig. 6, the difference of this Fig. 6 and Fig. 5 is: baseband controller CPU is after assigning control command C to the RF module, directly respectively the serial ports of each RF module is not assigned the instruction that data send or receive, but during increased data buffer and offset buffer as intermediary.That is to say that " data transmission interface " connecting object of baseband controller is: " data transmission buffer " reaches " offset buffer ", and interconnects by the data transmission interface of offset buffer and regional wireless transceiver, and for example, CPU is at T4 among the figure
1In time buffer is carried out the operation of read write command DA, and at T4
2Time CPU then carries out the operation of read write command DB to buffer, can significantly reduce the power consumption (that is to say CPU improve the efficient of transceive data) of baseband controller CPU to the data accessing operation like this, has obviously reduced the duration of T4, i.e. T4
1+ T4
2＜＜T4.And, when the capacity of buffer is big, also can reduce the frequency of access of baseband controller, for example among Fig. 6 to buffer, can reduce in T4 time inner module DA and twice access of module DB and only to carry out primary access, do other work to save switching frequency and time.
The transmission of each regional wireless transceiver can be because of the different possibilities (promptly may account for or several time slots) that different length are arranged of packetizing protocol kind with the time of receiving cycle.For the sake of simplicity, in Fig. 7, (TX Cycle, RX Cycle) is all identical to adopt its transmission, receiving cycle, and all accounts for a time slot and be described (only paying close attention on the information transmission interface) here.
The transmission of each regional wireless transceiver can be because of the different possibilities (promptly may account for or several time slots) that different length are arranged of packetizing protocol kind with the time of receiving cycle.For the sake of simplicity, in Fig. 7, adopt its transmitting-receiving cycle all identical, and all account for a time slot and be described:
1, when clock a point, Clock A comes into operation and timing, and regional wireless transceiver (RF_A) is modulated to specific channel A1, begins to send the data B_A_D that is transmitted by the B_A interface;
2, passed through time difference b-a (time offset B), when clock b point, Clock B comes into operation and timing (Clock B=Clock+time offset B), another specific channel B1 that the CPU application program of baseband controller allows regional wireless transceiver (RF_B) be modulated to be different from the A1 frequency, and begin to send the data B_B_D that transmits by the B_B interface.Meanwhile, the CPU application program of baseband controller also allow RF_A send B_A_D (promptly at bg in the period, CPU adopts the mode at B_A and two quick switching multiplexings of interface of B_B, reaches the purpose of transmitting data simultaneously.Certainly, the speed of this CPU switching must satisfy the timing sequence specification of these two interfaces transmission).The timing sequence specification of this two interfaces transmission may be interpreted as: be the requirement of transmitted data amount in certain time slot (time slot) of satisfying that this area wireless network protocol specification must reach.
3, passed through time difference c-a (time offset C), when clock c point, Clock C comes into operation and timing (Clock C=Clock+time offset C), another specific channel C1 that the cpu monitor program of baseband controller allows regional wireless transceiver (RF_C) be modulated to be different from A1 and B1 frequency, and begin to send the data B_C_D that transmits by the B_C interface.Meanwhile, the cpu monitor program of baseband controller also allows RF_A send B_A_D and allows RF_B send B_B_D.Also promptly at cg in the period, CPU can adopt three interfaces at B_A, B_B and B_C to switch the mode that timesharing is controlled fast, reaches the data of transmitting three interfaces simultaneously.Certainly, the speed of CPU switching also must satisfy the timing sequence specification of these three interfaces transmission.
4, passed through time difference e-a (time_offsetD), when clock e point, Clock D comes into operation and timing (Clock D=Clock+time_offsetD), another specific channel D1 that program control allows regional wireless transceiver (RF_D) be modulated to be different from A1, B1 and C1 frequency, and begin to send the data B_D_D that transmits by the B_D interface, meanwhile, the CPU of baseband controller also allows RF_A send B_A_D, allows RF_B send B_B_D and allows RF_C send B_C_D.Also promptly at eg in the period, CPU can adopt the mode of switching fast at B_A, B_B, B_C and four interfaces of B_D, reaches the data of transmitting four interfaces simultaneously.Certainly, the speed of CPU switching also must satisfy the timing sequence specification of these four interfaces transmission.
In a word, the cpu monitor program of baseband controller uses time difference time offsetA, time offsetB, timeoffsetC and time offsetD that the transmission of each regional wireless transceiver A, B, C, D and the starting point of receiving cycle can be staggered mutually with the suitable time interval.Above-mentioned time difference time offset also can use: n * time slot+time offset represents, wherein: n is greater than 0 and less than the integer (exercisable channel number can be 79 or 23 in Bluetooth protocol) of the spendable channel number of communicator of the present invention.
5, when clock g point, the cpu monitor program of baseband controller calculates its transmission cycle through Clock A and terminates, discharge channel A1, make regional wireless transceiver (RF_A) enter receiving cycle, be that Clock A begins another receiving cycle, the cpu monitor program allows RF_A be modulated to another the specific reception info-channel A2 that is different from B1, C1, D1 frequency (annotate: frequency A2 also can be identical with frequency A1), and the CPU of baseband controller begins to receive the data that transmitted by the B_A interface.Meanwhile, the CPU of baseband controller also allows RF_B send data B_B_D, allows RF_C send data B_C_D and allows RF_D send data B_D_D.Also promptly at eg in the period, the cpu monitor program adopts in B_A, B_B, B_C and the mode that four interfaces of B_D switch fast, timesharing is controlled, and realizes sending simultaneously the operation of three interface data and an interface data of reception.Certainly, the speed of CPU switching also must satisfy the timing sequence specification of these a plurality of interface actions.
Below sequential be to circulate again and again, the transmission of different is each transceiver with receive sequential and be in separately cycle period.In addition, it also is similarly that frequency division or sign indicating number divide the method for work of operation, does not repeat them here.
Claims (10)
1, the device of the multiplexed a plurality of wireless transceivers of a kind of area wireless network baseband controller, this device includes at least: area wireless network baseband controller, regional wireless transceiver and antenna; It is characterized in that: described regional wireless transceiver is two or more, works alone respectively separately in the 2.4-2.4835GHz frequency range, and the one end connects antenna, and the other end is connected to baseband controller respectively; Described baseband controller is one, and its store memory contains the application program of this device multiplex operation; By transfer of data and control interface and a plurality of address thereof that this device and above-mentioned a plurality of regional wireless transceivers are connected respectively, above-mentioned two or more wireless transceivers are carried out multiplex operation by this application program.
2, the device of the multiplexed a plurality of wireless transceivers of area wireless network baseband controller according to claim 1 is characterized in that: the multiplexed operation of central processor CPU in the described wireless network baseband controller is time division multiplexing or frequency division multiplexing or code division multiplexing.
3, the device of the multiplexed a plurality of wireless transceivers of area wireless network baseband controller according to claim 1, it is characterized in that: described regional wireless transceiver can have a frequency range that is operated in 5GHz.
4, the device of the multiplexed a plurality of wireless transceivers of area wireless network baseband controller according to claim 1 is characterized in that: described two or more regional wireless transceivers can be the different structure of different production firms manufacturing or the module of different model.
5, the device of the multiplexed a plurality of wireless transceivers of area wireless network baseband controller according to claim 1, it is characterized in that: can between baseband controller and each regional wireless transceiver, set up a complex programmable logic device (CPLD) or on-site programmable gate array FPGA device, as offset buffer (shift register) or push-up storage (FIFO) or comparator, be used for the data message of buffer-stored baseband controller when multiplexed transmitting-receiving is operated and the computing of this baseband controller part monitoring program of execution.
6, the method for work of the multiplexed a plurality of wireless transceiver devices of a kind of area wireless network baseband controller is characterized in that: comprise the following steps:
(1) CPU in the area wireless network baseband controller is that each regional wireless transceiver produces a transmitting-receiving work disposal sequential, this transmitting-receiving work disposal sequential is the transmitting-receiving cycle with half, one or more time slot (time slot), and CPU should stagger the transmitting-receiving work disposal sequential of each transceiver mutually and makes it asynchronous to each other;
(2) before the transmitting-receiving work disposal cycle of each regional wireless transceiver begins, the CPU in the area wireless network baseband controller is provided with this zone wireless transceiver full duplex transmission and sends and the initial state that receives;
(3) before the transmitting-receiving cycle begins, CPU in the area wireless network baseband controller determines time of current transmission cycle according to the kind of wireless protocols package, and calculates and other the current different transmission of regional wireless transceiver in the operating state and modes of receive frequency and/or modulation and demodulation of being in for it;
(4) CPU in the area wireless network baseband controller sends instruction, does to send the operation of signal in regular turn for the current regional wireless transceiver that is under the transmission cycling state;
(5) CPU in the area wireless network baseband controller receives instruction, does the operation of received signal in regular turn for the current regional wireless transceiver that is under the receiving cycle operating state.
7, the method for work of the multiplexed a plurality of wireless transceiver devices of area wireless network baseband controller according to claim 6 is characterized in that: the order of above-mentioned steps (4), (5) can be interlocked or exchange and be carried out.
8, the method for work of the multiplexed a plurality of wireless transceiver devices of area wireless network baseband controller according to claim 6, it is characterized in that: the order of above-mentioned steps (2), (3) is commutative.
9, the method for work of the multiplexed a plurality of wireless transceiver devices of area wireless network baseband controller according to claim 6 is characterized in that: the communication protocol that described area wireless network baseband controller is supported is Bluetooth protocol or 802.11 agreements or Home RF agreement.
10, the method for work of the multiplexed a plurality of wireless transceiver devices of area wireless network baseband controller according to claim 6, it is characterized in that: this zone wireless transceiver full duplex transmission that is provided with in the described step (2) sends and the initial state that receives, and also can change into the initial state that this zone wireless transceiver half-duplex transmission sends or receives is set.
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| CN 02124259 CN1389988A (en) | 2002-07-12 | 2002-07-12 | Multiplex commuicator with radio transceivers in several regions and its working method |
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| CN 02124259 CN1389988A (en) | 2002-07-12 | 2002-07-12 | Multiplex commuicator with radio transceivers in several regions and its working method |
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| CN1937439B (en) * | 2005-06-10 | 2011-12-14 | 美国博通公司 | Method and system for frequency distribution |
| CN104272284A (en) * | 2012-03-02 | 2015-01-07 | 凯萨股份有限公司 | Systems and methods for duplex communication |
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