CN103313258A - Method, communication device and communication terminal for coordinating network operation - Google Patents
Method, communication device and communication terminal for coordinating network operation Download PDFInfo
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Abstract
The present invention discloses a method, a communication device and a communication terminal for coordinating network operation. The communication device is configured for operating a network in a first frequency band for aiming at two communication terminals which are registered for using the network. The communication device comprises a controller which is configured for indicating the two communication terminals to perform transmission between the two communication terminals in a second frequency band if the second frequency band can be used for communication. The communication terminal comprises a receiving circuit which is configured for receiving instruction that is used for performing transmission with the other communication terminal that is registered for using the network in the second frequency band if the second frequency band can be used for communication.
Description
The cross reference of related application
The application requires the priority of Singapore's patent application of submitting on March 7th, 2012 201201618-4 number, for all purposes, by reference its full content is herein incorporated.
Technical field
Each embodiment relates generally to by utilizing chance formula in the optional channel to transmit to coordinate the operation of the network with dedicated channel.
Background technology
Rise has in identical unauthorized frequency range, such as the different radio technology of operation in the 60GHz frequency range (that is D band).Many by standardized technology or will be specified in the work of D band by standardized technology, comprise IEEE802.11ad, standardization IEEE802.15.3c and standardization ECMA-387.
Further, Chinese Wireless Personal Network (CWPAN) is the standard operation group that meets China national information technology standard (NITS), is defined in the standard of 60GHz scope operation, as the Wireless Personal Network (WPAN) in China.The purpose of these standards is to Wireless Personal Network provides high-throughput greater than 1Gbit/s, and has similar spectral channelization.Each standard has the channel more than, to satisfy the synchronous operation network.The 60GHz wireless technology can be configured in the various environment, such as office, school and family.In some running environment as office and school, many network supports can be favourable, or even conclusive.On the other hand, in other environment of picture family or small office, single network is normally enough.Therefore, in these cases, it is favourable will being exchanged for single operational network for the frequency spectrum at the many networks of support of bigger throughput.Yet when other networks were thought to move in its vicinity, single network may not be allowed to handle or abandon and repair.
Therefore, for provide the operational network throughput between improving balance and for everybody keeps level playing field, the chance formula transmission in the optional channel outside the exploitation single network dedicated channel.
In order to promote this chance formula transmission, can use medium access control (MAC) agreement.
The MAC agreement generally comprises the use of IEEE802.11MAC beacon interval.
Fig. 1 illustrates the example of beacon interval (BI) structure, comprise two CBAP and two SP in BTI, A-BFT, AT and the DTT, as specified in the IEEE P802.11ad/D5.0 in September, 2011 standard " the tenth part: the very enhancing of high-throughput in WLAN medium access control (MAC) and physical layer (PHY) the standard amendment 5:60GHz band ".
Among the IEEE802.11ad MAC, beacon interval 100 mainly is divided into 4 parts:
Beacon transmission interval (BTI) 104
Related wave beam forms training (A-BFT) 106
The announcement time (AT) 108
Data transfer time (DTT) 102
During beacon transmission interval (BTI) 104, individual Basic Service Set central point (PCP)/access point (AP) is via the one or more D band beacon frames in different sector half-transmit fully.Beacon frame carries network management information.Beacon frame is the network enabled synchronizing function also.
Beacon frame as PCP/AP and non--PCT/ non--AP station (STA) between the training frames that forms of wave beam.In order to connect network, the STA scanning for beacon continues PCP/AP beam forming process among the A-BFT, cooperates with PCP/AP during AT108 or based on the access period CBAP110,116 that competes then.
Related wave beam form training (A-BFT) 106 be used for PCP/AP and non--PCP/ non--carry out initial beam between the AP STA to form training.A-BFT106 fluting and allow a plurality of non--PCP/ is non--AP STA carries out wave beam simultaneously with PCP/AP and form in identical A-BFT106.
During the announcement time (AT) 108, can carry out PCP/AP and non--PCP/ non--the management access based on request-response between the AP STA.PCP/AP data transfer time (DTT) 102 scheduling CBAP110,116 and the periods of service (SP) 112,114 distribute.
During the data transfer time (DTT) 102, CBAP110,116 and SP112,114 during can produce any frame, comprise application data frame transmission.Visit during the CBAP110,116 is based on the IEEE 802.11EDCA operation of modification, and this operates to beam communication and adjusted.Visit during the SP112,114 is scheduled and is assigned to specific station.
Summary of the invention
In first aspect, the present invention relates to a kind of communicator, described communicator is configured at two communication terminals for using network to register, operational network in first frequency band, described communicator comprises controller, can be used for communication if this controller is configured to second frequency band, then indicate described two communication terminals in described second frequency band, to carry out transmission between described two communication terminals.
According to second aspect, the present invention relates to a kind of communication terminal for using the network in first frequency band, move to register, described communication terminal comprises receiving circuit, can be used for communication if be configured to second frequency band, the instruction of the transmission between another communication terminal of then receive to be used for carrying out and registering for the network that uses in second frequency band.
In the third aspect, the present invention relates to a kind of method of coordination network operation, described method comprises: at two communication terminals for using network to register, operational network in first frequency band; And if second frequency band can be used for communication, then indicate described two communication terminals in second frequency band, to carry out transmission between described two communication terminals.
Description of drawings
In the accompanying drawings, run through different views, similarly the identical part of the general expression of Reference numeral.Accompanying drawing is not necessarily drawn in proportion, focuses on explaining principle of the present invention on the contrary.For clearness, various feature/size of component can at random be amplified or be reduced.In the following description, various embodiment of the present invention describe with reference to following accompanying drawing, wherein:
Fig. 1 illustrates the example of beacon interval (BI) structure, is formed by two access period (CBAP) and two periods of service (SP) based on competition that the beacon time interval (BTI), related wave beam form in training (A-BFT), announcement time (AT) and the data transfer time (DTT), as the IEEE P802.11ad/D5.0 in September, 2011 standard " the tenth part: the WLAN medium access control (MAC) and physical layer (PHY) standard amendment 5:60GHz be with in the very enhancing of high-throughput " in specified;
Fig. 2 illustrates the exemplary band according to chance formula transmission in the optional channel of the representative of each embodiment;
Fig. 3 A illustrates the schematic diagram according to the communicator of each embodiment;
Fig. 3 B illustrates the schematic block diagram according to the communication terminal of each embodiment;
Fig. 3 C illustrates the flow chart according to the method for the coordination network operation of each embodiment;
Fig. 4 A illustrates the example of expansion D band TSPEC element form, as specified in the IEEE P802.11ad/D5.0 in September, 2011 standard " the tenth part: the very enhancing of high-throughput in WLAN medium access control (MAC) and physical layer (PHY) the standard amendment 5:60GHz band ";
Fig. 4 B illustrates the example of D band assignment information field format, as specified in the IEEE P802.11ad/D5.0 in September, 2011 standard " the tenth part: the very enhancing of high-throughput in WLAN medium access control (MAC) and physical layer (PHY) the standard amendment 5:60GHz band ";
Fig. 5 A illustrates the example of expansion scheduling element form, as specified in the IEEE P802.11ad/D5.0 in September, 2011 standard " the tenth part: the very enhancing of high-throughput in WLAN medium access control (MAC) and physical layer (PHY) the standard amendment 5:60GHz band ";
Fig. 5 B illustrates the example according to the allocation field form of each embodiment, it has optional TX BI field number and hangs the BI field number, optional TX BI field number is according to the duration of BI number indication transmission block in can optional channel, and described suspension BI field number is according to the duration between two adjacent transmission blocks of BI number indication;
Fig. 6 A illustrates according to the performed scheduling in two stations (STA) of the network controller of each embodiment utilization operation in dedicated channel (L1) or access point (AP/PCP1) and operation in optional channel (L2) and realize the example that frequency spectrum inserts in optional channel (L2);
Fig. 6 B illustrates the expanded view according to the exemplary frequency spectrum access of Fig. 6 A of the explaination sweep phase of each embodiment and transmit stage;
The expanded view that the exemplary frequency spectrum of Fig. 6 A in explaination sweep phase, transmit stage and suspension stage according to each embodiment of illustrating Fig. 6 C inserts;
Fig. 6 D illustrates the expanded view that inserts of the exemplary frequency spectrum of Fig. 6 C according to comprising of each embodiment of new sweep phase; And
Fig. 7 illustrates the flow chart according to the action of the station of moving (STA) of each embodiment or device under the transmission of chance formula in optional channel.
Embodiment
Following detailed relate to as example the present invention is shown can effective specific detail and the accompanying drawing of embodiment.These embodiment describe with enough details, so that those skilled in the art implements the present invention.Do not breaking away from the scope of the invention, can utilize other embodiment, and can carry out structure, logic and electric on change.Each embodiment is not necessarily mutually exclusive, can be combined with one or more other embodiment as some embodiment, to form new embodiment.
The embodiment that describes in the method context is effective in device approx, and vice versa.
In the context of each embodiment, the reference that comprises one or more features or element about the employed article " " of feature or element and " described ".
As used herein, term " and/or " comprise any He all combinations that one or more associations are listed.
Each embodiment provides the procotol that has dedicated channel, and this network uses the transmission of chance formula in a plurality of optional channels.
Each embodiment can provide medium access control (MAC) agreement, is used for promoting each to striding the chance formula wireless data transmission of some channel bands between the device, satisfies the coexistence with other networks that can move in those channel strips simultaneously.Each forms wireless network to device with possible other devices and network coordinator (network controller), and this wireless network moves in the dedicated channel frequency band, and operation is selected from a plurality of channel bands that network can move in the dedicated channel frequency band.If desired, if when other channel bands are vacant, network controller can dispatch each to the short pulse of the transfer of data between installing by the MAC agreement in other channel bands.
Each embodiment relates to the communication in the network that comprises node, and for example, communicator and/or communication terminal can comprise memory, and this memory for example is used for the processing by communicator and/or communication terminal realization.The memory that uses among the embodiment can be volatile memory, for example DRAM(dynamic random access memory); Or nonvolatile memory, for example PROM(programmable read only memory), EPROM(can wipe PROM), EEPROM(electric erasable PROM); Or flash memory, i.e. floating-gate memory, charge-trapping memory, MRAM(magnetoresistive RAM); Or PCRAM(phase change random access memory devices).
In order to make the present invention be easier to understand and have practical function, describe as example but unrestriced specific embodiment referring now to each figure.
For example about the illustrative example of 60GHz channelizing, suppose to have network 200 establishment in dedicated channel (L1) 204 of controller PNC1202 as shown in figure 2.Usually, the communication in this network is only limited to the frequency band of L1204.Yet right if L1204 can not distribute enough time slots to satisfy transmission, the formula that can offer an opportunity transmission policy is with scheduled transmission in optional channel (L2) 214 (for example, the station STA of S1206 and D1208 is right, the STA of S2210 and D2212 to).
In first aspect, provide communicator as shown in Figure 3A.In Fig. 3 A, communicator 300 is configured at two communication terminals 306,308 for using (310) network 320 to register, operational network 302 in first frequency band 304.Communicator 300 comprises controller 312, and this controller 312 is configured to two communication terminals 306 of indication, 308 transmission 314 between these two communication terminals 306,308 of realization in second frequency band 316 when second frequency band 316 can be used for communicating by letter.
For example, communicator 300 can be the PNC1202 of Fig. 2, but is not limited thereto.First frequency band 304, second frequency band 306 and two communication terminals 306,308 can be respectively the dedicated channel L1204 of Fig. 2, optional band L2214 and S1-D1 to 206,208(or S2-D2 be to 210,212), but be not limited thereto.
In the context of various embodiment, the node that term " communicator " generally can be called as directly and communication terminal communicates.Communicator can be for example base station or substation, access point, or modulator-demodulator, and cable, or port, but be not limited thereto.
In one embodiment, communicator 300 can include but not limited to access point or individual Basic Service Set central point or piconet coordinator.
Term " communication terminal " can refer to help to send and/or the machine of the transfer of data of receiving data information.Therefore, communication terminal generally also can be called as node.For example, communication terminal can be station (STA), substation, mobile radio station (MS), port, mobile phone, computer or kneetop computer, but is not limited thereto.
In one embodiment, communication terminal 306,308 can comprise mobile device or station.
For example, a plurality of communication terminals can be called as a plurality of stations (STA).Stand can for data can be from the source station (for example, S1206 or S2210) of its transmission, maybe can for data can received Target Station (for example, D1208 or D2212).
Two communication terminals 306,308 can be called as communication terminal to or source-destinations traffic terminal right.
As used herein, term " network " refers generally to cordless communication network.For example, network 302 can be the communication network according to 802.11 communication standards, CWPAN communication standard or D band communication standard.Term " network " also comprises for any method or the media to another node transmission (or reception) information from a node.Network is to be formed by communicating to connect between the node.The link that generally can refer to for providing information to transmit between a node and another node " is provided ".The D band of the 802.11ad draft standard before in this article, term " D is with communication standard " or D band network refers to be present in.
Term " network " sometimes is called as " system " convertibly.
As used herein, the term " RUN " can refer to " function ", " work " or " communication ".
Term " for using ... and register " can refer to use network (for example, network 302) based on registered or original arranging.In other words, for example, for example utilize communicator 300(, network controller) and communication terminal 306,308(for example, can include but not limited to stand or the STA of mobile radio station) in the network created, these communication terminals 306,308 " for use is registered " in this original establishment network 302 are as long as communication terminal 306,308 keeps communicating by letter with the communicator 300 of operation in this network 302.
Term " transmission " can refer to the transmission that is scheduled, or more specifically refers to the transmission by communicator (for example, can be the communicator 300 of access point or network controller) scheduling.Transmission can be called as transfer of data.
Transmission between two communication terminals can be directly transmission (walking around communicator).
Term " indication " can refer to send instruction, notice, commander, order or request.In some instances, term " indication " can refer to instruct from communicator 300 direct repeating systems to communication terminal 306,308.As the example of simple form, communicator 300 sends to communication terminal 306,308 and is used to indicate the instruction that communication terminal 306,308 is proceeded to move.
In other examples, term " indication " can comprise to be assessed some conditions that are used for definite instruction, will instruct thus to be relayed to communication terminal 306,308 indirectly from communicator 300.As example, communicator 300 can be waited for to be received from each communication terminal 306,308 signal.If receive signal, then communicator 300 can notifying communication terminal 306,308 have been received signal, and communication terminal 306,308 is no longer proceeded operation.But if do not receive signal, then communication terminal 306,308 is proceeded operation.This mode, communicator 300 do not send any instruction of proceeding to move to communication terminal 306,308, whether proceed operation but can be understood as communicator 300 indication (indirectly) communication terminals 306,308.
Term " can be used for communication " can refer to the frequency band of not executive communication or transmission, or does not have the frequency band of the network of operation therein.In some instances, " can be used for communication " also can refer to also not create the frequency band of network.Term " can be used for " being called as convertibly " not using ", " vacant " or " free time ".
Term " frequency band " refers to the bandwidth of frequency.Term " frequency band " can be called as " channel " convertibly.In some instances, frequency band can also be called as band, channel strip, band channel, band frequently or channel.
For example, term " frequency band " or " channel " can refer to whole system bandwidth or its part.In this article, bandwidth is defined as the signal of telecommunication at the width of the frequency range used of transmission medium (or band) of regulation, and the transmission medium of this regulation can be wireless medium.Bandwidth can be expressed with the difference between highest frequency signal component and the low-limit frequency signal component.
In each embodiment, first frequency band 304 can be different with second frequency band 316.This means that first frequency band 304 can be the frequency band that separates with second frequency band 316.
For example, first frequency band 304 can be dedicated frequency band (or dedicated channel), and network 302 is created in this dedicated frequency band, and communicator 300 can be in this dedicated frequency band operation.
Second frequency band 316 can be the optional frequency of not used by another network.Second frequency band 316 can not move the band of its network therein for communicator 300.
In each embodiment, if controller 312 can be configured to indicate two communication terminals 306,308 to detect whether second frequency band 316 can be used for communication and second frequency band 316 can be used for communication then carry out transmitting 314.
In another example, communicator 300 can be configured to detect second frequency band 316 and whether can be used for communication, and if second frequency band 316 can be used for communication then indicate two communication terminals 306,308 to carry out transmission 314.
Term " detection " can refer to " scanning ", " determining " or " assessment " convertibly.
In each embodiment, controller 312 can be configured to whether can be used for communication based on detecting second frequency band 316 from least one two communication terminals 306 of request indication, 308 in two communication terminals 306,308, and wherein this request can comprise data transfer request or the request that will move in second frequency band 316.
In certain embodiments, second frequency band 316 can be used for communication and when communicator 300 is determined to meet network standard, indicate two communication terminals 306,308 to carry out transmission 314 between two communication terminals 306,308 in second frequency band 316 if controller 312 can be configured to.The exemplary network standard that meets can comprise the offered load that is higher than the predetermined load threshold value, is lower than the data transmission bauds of predetermined speed threshold value in the network, and/or the networked services quality (QoS) that is satisfied, but is not limited thereto.
In each embodiment, controller 312 can further be configured to property dispatching cycle time slot in first frequency band 304, communicates with communicator 300 so that two communication terminals 306,308 that transmit in second frequency band 316 turn back to first frequency band 304.
Term " scheduling " refers to be configured or dispose according to communication protocol.
In each embodiment, communicator 300 may further include: receiver is configured to receive whether available message of indication second frequency band 316; Transmitter if it is occupied to be configured to second frequency band 316, then sends termination messages to two communication terminals 306,308, makes two communication terminals 306,308 stop at transmission in second frequency band 316.
As used herein, term " receiver " circuit that refers generally to have receiving ability and function.The circuit of term " transmitter " refers generally to have transmission (or transmission) ability and function.
In an embodiment, " circuit " can be understood that the logic execution entity of any kind, and it can or be used for the processor that execution is stored in the software of memory, firmware or its combination in any for special circuit.Therefore, in an embodiment, " circuit " can be for hardwired logic or such as the Programmable Logic Device of programmable processor, for example microprocessor (for example, complex instruction set computer (CISC) (CISC) processor or Reduced Instruction Set Computer (RISC) processor)." circuit " can also be for being used for carrying out for example processor of the software of the computer program of any type (for example using the computer program such as the virtual machine code of Java).According to optional embodiment, the realization of any other types of the corresponding function that will describe in more detail also can be understood as " circuit " below.
In this article, term " receiver " can refer to the element that separates with " transmitter " or be attached to single encapsulation (that is transceiver).Usually, transceiver comprises that namely transmitting capacity and function comprise receiving ability and function again.
Term " transmission " can refer to transmission or broadcasting, but is not limited thereto.In some instances, communicator 300 can comprise the transceiver that is configured to send voice or data, services.
Term " takies " and refers to be not useable for communicating by letter or have another network that moves in that frequency band.
In one example, when two communication terminals 306,308 turn back to first frequency band 304, if second frequency band 316 is occupied, then communicator 300 can send the termination messages that makes two communication terminals 306,308 stop at the transmission 314 in second frequency band 316.
In second aspect, provide the communication terminal shown in Fig. 3 B.In Fig. 3 B, communication terminal 320 is registered for the network (for example, the network 302 of Fig. 3 A) that uses operation in first frequency band (for example, first frequency band 304 of Fig. 3 A).Communication terminal 320 comprises receiving circuit 322, if being configured to second frequency band, this receiving circuit 322 can be used for communication then receives instructing, then the transmission between execution and another communication terminal (for example, the transmission 314 of Fig. 3 A), this another communication terminal is registered for using the network in second frequency band (for example, second frequency band 316 of Fig. 3 A).
Term " communication terminal ", " for using ... and register ", " network ", " RUN ", " first frequency band ", " circuit ", " instruction " (based on term " indication "), " transmission ", " second frequency band " can be defined as mentioned with " can be used for communicating by letter ".
For example, as described above, first frequency band can be different with second frequency band.Second frequency band can not used by another network.Transmission between communication terminal and another communication terminal (both registers for using network) can be direct transmission (getting around the communicator of network).
In each embodiment, if can being configured to second frequency band, communication terminal 320 can be used for communication, then in second frequency band, carry out the transmission with another communication terminal.
In each embodiment, communication terminal 320 turns back to first frequency band can further be configured to finish transmission with another communication terminal in second frequency band after.
In other words, can think that to be configured in second frequency band to carry out communication terminal 320 with the transmission of another communication terminal be interim or the chance formula.Term " returns " and refer to communication terminal 320 in case finish in the network that its chance formula transmission just moves and restart its communication in second frequency band in first channel.
In certain embodiments, communication terminal 320 can further be configured to periodically turn back to first frequency band.
For example, communication terminal 320 can further be configured to when the communicator of network (for example, the communicator 300 of Fig. 3 A) be scheduled as and turn back to first frequency band when broadcasting comprises the signal of timestamp, wherein timestamp is used for making communication terminal and communicator synchronous.
As used herein, term " timestamp " (for example can be used for expression temporal information item, date or time), this temporal information item is with the time (or temporary position) of benchmark definition preset time about starting point, and it is relevant with the part of signal data cell, the data set of image (for example, such as).Only in order to explain target, for example, in video sequence, timestamp can be relevant with each image, and corresponding to the position of this image in sequence.Timestamp can be based on timestamp parameter, for example, the timestamp precision (that is, reach second, branch or the time unit); The amplitude of timestamp; The minimum interval size that detects (or decoding postpones); Robustness to mistake; And the scramble time that is of each image stab required information size, but be not limited thereto.
Term " broadcasting " refers to from a node by the zone, namely to all or a plurality of communicator that are positioned at this zone (for example, use identical wireless communication technology, for example according to identical communication standard, as communication terminal or as the part of the identical network of communicator) send signal (or notification signal), this signal can be beacon.
Term " communicator " and " scheduling " can be as hereinbefore defined.
In each embodiment, communication terminal 320 may further include transmission circuit, and the communicator (for example, the communicator 300 of Fig. 3 A) that this transmission circuit is configured to network sends the message whether indication second frequency band can be used for communicating by letter.Should be understood that second frequency band can not move the band of its network for communicator therein.In certain embodiments, if second frequency band can be used for communication and communicator when determining to meet network standard, communication terminal 320 and other communication terminals can be indicated on and carry out transmission in second frequency band.As described above, the exemplary network standard that meets can comprise the offered load that is higher than the predetermined load threshold value, is lower than the data transmission bauds of predetermined speed threshold value in the network, and/or the service quality (QoS) of the networking of satisfying, but is not limited thereto.
If it is occupied then send deletion message to communicator that transmission circuit can further be configured to second frequency band, with the transmission of deleting communication terminal 320 in second frequency band.
In this article, term " receiving circuit " and " transmission circuit " can refer to separating element or be combined in the single encapsulation (that is transceiver).Usually, transceiver comprises that namely transmittability and function comprise receiving ability and function again.
In one embodiment, deletion message can comprise the indication for the transmission of deleting communication terminal 320 in second frequency band.Phrase " deletion ... transmission " refers to deletion transmission from the scheduling of communicator.
In each embodiment, communication terminal 320 may further include detector, and this detector is configured to indicate the notification signal that has another network in second frequency band by detecting, and it is occupied to detect second frequency band.
Term " detection " can be as hereinbefore defined.
As used herein, term " notification signal " refers to be used to the signal of informing or notify other devices.For example, notification signal can be beacon.
In the context of each embodiment, term " indication " comprises explanation, demonstration, meaning, announcement, notice, announces or registration, but is not limited thereto.
In each embodiment, detector can be configured to detect at the fixed time whether second frequency band can be used for communication in the section.Communication terminal 320 can be configured to move in second frequency band, and the duration of operation is the maximum duration of N * predetermined amount of time, and wherein N is the variable of the duration of definition transmit stage.For example, N can be the number of transmissions in second frequency band.Communication terminal 320 can further be configured to hang up the operation in second frequency band, and the duration of hang-up is the minimum duration of B * predetermined amount of time, and wherein B is definition hang-up stage and the variable of the total duration of sweep phase next time.For example, B can be 1,2 or bigger value.
In the third aspect, provide the method 340 of the network cooperating operation shown in Fig. 3 C.Among Fig. 3 C, 342, two communication terminals about for using network to register can make this network move in first frequency band.344, if second frequency band can be used for communication, then can indicate two communication terminals in second frequency band, to carry out transmission between two communication terminals.
Term " RUN ", " network ", " first frequency band ", " communication terminal ", " for using ... and register ", " indication ", " transmission ", " second frequency band " can be as hereinbefore defined with " can be used for communicating by letter ".
Communication terminal can refer to the communication terminal 306,308 or the communication terminal 320 of Fig. 3 B of Fig. 3 A.
For example, as described above, first frequency band can be different with second frequency band.Second frequency band can not used by another network.For using network can be directly transmission (walking around the communicator of network) for the transmission between two communication terminals of registration.
In each embodiment, method 340 may further include and detects second frequency band and whether can be used for communication, and if second frequency band can be used for communication then carry out transmission.
For example, detecting whether second frequency band can be used for communicating by letter can be based on from least one the request in two communication terminals, and wherein request can comprise data transfer request or the request that will move in second frequency band.
In each embodiment, method 304 may further include the time slot of property dispatching cycle in first frequency band, so that two communication terminals that transmit in second frequency band turn back to first frequency band, to communicate with the communicator that is configured to operational network.Should be understood that second frequency band can not move the band of its network for communicator therein.
In each embodiment, occupied then send termination messages to two communication terminals if method 304 may further include second frequency band, so that two communication terminals stop at the transmission in second frequency band.
As described above, in one example, when two communication terminals turned back to first frequency band, if second frequency band is occupied, then communicator can send the termination messages that makes two communication terminals stop at the transmission in second frequency band.
For example, method 340 can comprise the transmission between execution and another communication terminal in second frequency band if second frequency band can be used for communicating by letter.
In certain embodiments, method 340 can comprise if second frequency band can be used for communication and determined (for example, by the communicator of network) when meeting network standard, the transmission in second frequency band between execution and another communication terminal.As described above, the exemplary network standard that meets can comprise the offered load that is higher than the predetermined load threshold value, and/or is lower than the data transmission bauds of predetermined speed threshold value in the network, but is not limited thereto.
In each embodiment, the transmission that method 340 may further include in finishing second frequency band makes two communication terminals turn back to first frequency band afterwards.
In one example, method 340 can comprise and makes two communication terminals periodically turn back to first frequency band.
For example, method 340 can comprise when the communicator of network is scheduled broadcast singal, makes two communication terminals turn back to first frequency band, and wherein this signal comprises be used to making the synchronous timestamp of two communication terminals and communicator.
In each embodiment, occupied if method 340 may further include second frequency band, then send deletion message, to delete two transmission of communication terminal in second frequency band.In one embodiment, deletion message can comprise the indication for the transmission of deleting communication terminal in second frequency band.Phrase " deletion ... transmission " refers to deletion transmission from the scheduling of communicator.
In each embodiment, method 340 may further include that to detect second frequency band occupied by detecting the notification signal that has another network in indication second frequency band.
Term " detection " (based on term " detection "), " transmission " (based on term " transmission "), " returning " (" returning " based on term), " scheduling ", " broadcasting ", " timestamp ", " notification signal " and " indication " can be similarly as hereinbefore defined.
Carry out in the section at the fixed time and detect the step whether second frequency band can be used for communicating by letter.
In some instances, method 340 can be included in operation in second frequency band, and the duration of this operation is the maximum duration of N * predetermined amount of time, and wherein N is the variable of the duration of definition transmit stage.For example, N can be the number of transmissions in second frequency band.Method 340 can comprise the operation of hang-up in second frequency band, and the duration of hang-up is the minimum duration of B * predetermined amount of time, and wherein B is definition hang-up stage and the variable of the total duration of sweep phase next time.For example, B can be 1,2 or bigger value.
In each embodiment, method 340 can comprise if second frequency band can be used for communication, then indicates a plurality of communication terminals to carry out transmission in second frequency band.Transmission can be divided into piece, and wherein each block gap there is not the period of moving in second channel.
Each embodiment can provide a kind of method (for example, the method 340 of Fig. 3 C) that comprises by the scheduler program of network controller expansion, scanning and the transmission of the device in this network controller coordination network in optional channel.Can by network controller to the device in the network transmission in dedicated channel and optional channel dispatch.Can be before actual data transfer, regulation echo beacon frame transmissions is arranged in unappropriated optional channel, broadcasting imminent transmission, and keeps channel inevitably, and the duration of reservation is the duration of transmission.
Scanning and host-host protocol can be authorized to, and are used for carrying out chance formula burst transfer at optional channel, and in optional channel, the continuous transmission of being undertaken by the device that belongs to identical network in each optional channel can be divided into piece.Each transmission block can be prior to the scanning period, and guaranteeing the room of optional channel, and the duration of piece may be limited to maximum time.In addition, adjacent transmission block is a duration at interval, and this duration is greater than setting up the new network (if there is) duration of used scanning period.
Can formulate one group of MAC agreement, promoting said procedure and other auxiliary routines, such as the device in optional channel and the network controller that in dedicated channel, moves synchronously.
As hereinafter described, the use of unauthorized 60GHz frequency band can be considered to the non-restrictive example of MAC agreement, is used for IEEE802.11ad, CWPAN network etc. in the chance formula transmission of optional channel.Yet, should understand, according to the method for various embodiments of the present invention can easily expand to have similar wireless network and arbitrarily other of the network operation of frequency band use a model.
For example with reference to figure 2, the CWPAN network can move in two different channel L1204 and L2214.Suppose to have with PCP/AP1(or PNC1202) set up particular network (for example, CWPAN network) among the L1204 of network controller of expression.Therefore L1204 is the dedicated channel of this network, and L2214 is the optional channel that can be used for this network.Network comprises PCP/AP1 and contains two a large amount of other devices that are defined as STA S1206 and STA D1208.
Can consider the initialization procedure of chance formula transmission in optional channel L2214.Initialization procedure is by the network control management or by the device request.Under first kind of situation, controller (PNC1202) is after the data transfer request that receives from source apparatus, and dispatching device is to (S1206, D1208 or S2210, D2212), to carry out their transfer of data in L2214.Under second kind of situation, device (S1206 or S2210) clear and definite request controller (PNC1202) allows device (S1206 or S2210) to carry out its transfer of data in L2214.In both cases, network controller final decision device is carried out transmission to whether and which device is carried out transmission to (S1206, D1208 or S2210, D2212) in L2214 in L2214.
PCP/AP1(or PNC1202) the permission device time that request msg is transmitted under the announcement time (AT108 of Fig. 1).Increase traffic flow (ADDTS) claim frame that STA S1206 will have D band traffic specification (TSPEC) element of expansion is transferred to PCP/AP1(or PNC1202), think that the data of STA D1208 transmit the access of reservation frequency spectrum.When receiving the ADDTS claim frame, PCP/AP1(or PNC1202) the ADDTS response frame that will have a D band TSPEC element of expansion is transferred to STA S1206, and STA D1208 inserts PCP/AP1(or PNC1202 about frequency spectrum) quantity and type determined to distribute based on request.STA S1206 otherwise with PCP/AP1(or PNC1202) consult or accept distribution again.Fig. 4 A shows the example of expansion D band TSPEC element format.In Fig. 4 A, expansion D band TSPEC element format 400 comprises 402(1 eight bit byte of element id field), length field 404(1 eight bit byte), 406(3 eight bit byte of D band assignment information field), wave beam forms (BF) control field 408(2 eight bit byte), distribute a period field 410(2 eight bit byte), 412(2 eight bit byte of smallest allocation field), 414(2 eight bit byte of maximum allocated field), 416(2 eight bit byte of minimum duration field), indication is included in 418(1 eight bit byte of constraint digital section of the field of the TSCONST quantity in the element), and traffic specification schedule constraints (TSCONST) field 420(variable).
Fig. 4 B illustrates D band assignment information field 406 forms, comprising: distribute id field 430(position B0-B3), distribute type field 432(position B4-B6), distribute format fields 434(position B7), pseudo-static fields 436(position B8), the field of can abridging 438(position B9) but extended field 440(position B10), low-power single carrier (LPSC) uses field 442(position B11), User Priority (UP) field 444(position B12-B14), Target Assignment ID(AID) field 446(position B15-B22) and reserved field 448(position B23).
Distribution type field 432 in expansion D band TSPEC element 400 is used to indicate the priority in the ADDTS claim frame of operating in optional channel, and is used to indicate the distribution in the ADDTS claim frame of operating in optional channel.Table 1 illustrates the example of the distribution type field value of transmitting in the optional channel.
Table 1
Insert right, PCP/AP1(or PNC1202 in case successfully consult frequency spectrum) just transmit the beacon frame with expansion schedule element or announce frame, distribute details to inform that STA S1206 and STA D1208 frequency spectrum insert.Fig. 5 A has provided the example of expansion schedule element 500.In Fig. 5 A, expansion schedule element 500 comprises: 502(1 eight bit byte of element id field), a length field 504(1 eight bit byte), distribute 1506(19 eight bit byte), distribute 2508(19 eight bit byte), distribution 3 is to each 19 eight bit byte of distribution n-1510() and n512(19 eight bit byte of distribution).
Fig. 5 B illustrates and distributes 1506 field format, comprising: distribute 520(2 eight bit byte of control), 522(2 eight bit byte of BF control field), 524(1 eight bit byte of source AID field), 526(1 eight bit byte of target AID field), distribute 528(4 eight bit byte of beginning field), an allocation block duration field 530(2 eight bit byte), 532(1 eight bit byte of piece digital section), an allocation block period field 534(2 eight bit byte), 536(2 eight bit byte of optional transmission beacon interval (TXBI) digital section) and hang up 538(2 eight bit byte of BI digital section).
Optional TX BI digital section 536 is according to the BI number indication duration of transmission block in optional channel.Hang up BI digital section 538 according to the duration between two adjacent transmission blocks of BI number indication.
In the chance formula transmission in optional channel band, the wireless network of each device can be designed to operate in having the frequency band of two or more channels.The network of each device can be operated in any channel in this frequency band.Establishment has the channel of network can be defined as its dedicated channel, and all the other channels in this frequency band can be defined as its optional channel.In routine operation, the radio communication in the network between each device can be restricted to its dedicated channel.Yet, if exist to need and chance, network controller can determine to dispatch device in one or more optional channels between transmission, thereby improve network throughput temporarily.These transmission may be a burst of, and may be only just licensed in not setting up the optional channel of network as yet.Transmission in each optional channel can be divided into piece, and the duration of each transmission block is restricted to a maximum time.Adjacent transmission block is the interval with the period of not transmitting in the optional channel.
For example, with reference to Fig. 6 A, consider to have the frequency band 600 of two letter bands (L1602 and L2604).These two letter band L1602 and L2604 also can be called as first frequency band 304 among Fig. 3 A and L1204 and the L2214 among second frequency band 316 or Fig. 2 respectively.Suppose to have created network in the channel L1602, and another channel L2604 is taken by other networks.Network controller among the L1602 (for example PNC I202 among Fig. 2) wants to dispatch two devices to (for example, S1206 and D1208 and S2210 and D2212, wherein S1206 and S2210 are source apparatus, and it has the data that pass to destination apparatus D1208 and D2212) carry out the transfer of data among the channel L2604.Convertibly, this device also can be called as communication terminal (for example, the communication terminal 320 among Fig. 3 B).
As among Fig. 6 A as seen, frequency spectrum among the L2604 inserts and is divided into three phases: scanning 606, transmission 608 and hang up 610.This three phases moves in circles, the transmission that all are scheduled in finishing L2604.
At least continuing a maximum beacon interval duration (MaxBIDuration) (maximum beacon interval, MaxBeaconInterval) in 612 the sweep phase 606, be scheduled as in L2604, move respectively install scanning channel to determine whether to have created another network among the L2604.
In transmit stage 608, each device is according to the AP/PCP1(PNC1202 among Fig. 2 for example) scheduling that distributes carries out its transfer of data.Be scheduled as each device of in time slot after a while, carrying out transfer of data and continue scanning channel to detect among the L2604 whether have other networks.And main source STA(for example can be the S1206 among Fig. 2) be scheduled as: if the duration of transmit stage 608 surpasses the maximum beacon interval duration, then each the maximum beacon interval in transmit stage 608 is transmitted the echo beacon frame after the duration.After this echo beacon frame 614, wave beam is set forms training field 616.This main source STA sends the beacon signal of simulating the beacon frame that is sent by PNC1202 in L1602 in L2604.
The duration of transmit stage 608 is subjected to expanding the restriction of optional TX BI digital section 536 in the scheduling element 500.Optional TX BI digital section 536 can represent that wherein this duration equals N * maximum beacon interval duration by the variable N of definition transmit stage duration in the expansion scheduling element 500, and for example, N can be the quantity of above-mentioned continuous transmission.Each maximum beacon interval duration can refer to one predetermined time section.In transmit stage 608, can be S1206 time slot 618 is provided, with to PNC1202 report, and can be D1208 time slot 620 is provided, to report to PNC1202.
After transmit stage 608, all devices are hung up its transmission in L2604, and the duration that should hang up is for hanging up the specified time of BI digital section 538 in the expansion scheduling element 500.Hang up BI digital section 538 in the expansion scheduling element 500 and can represent that wherein this duration equals B * maximum beacon interval duration by the variable B of the total duration that defines hang-up stage 610 and next sweep phase 622.When finishing, hang-up stages 610 begin new sweep phase 622, and whole process repeated again.
With reference to Fig. 6 B to 6D, the transmission among the L2604 can use following steps to create by PNC1202:
(i) in the sweep phase 606 of Fig. 6 B, S1206, S2210, D1208 and D2212 are intended to by PNC1202 scanning L2604, the duration of this scanning surpasses scanning period 640(, and it also can be described as predetermined amount of time), in this course, the arbitrary network that moves in L2602 sends notification package and exists to broadcast it.This scanning period 640 for example can comprise header (BH) 642 and DTT644(, the DTT102 among Fig. 1).
(ii) when the scanning period of distributing to each device finished, PNC1202 dispatched the time slot in the dedicated channel (L1602), and in this course, if arbitrary device detects any transmission in the optional channel (L2604), then it can be reported to PNC1202.If in distributed time slot, PNC1202 does not receive any report from these devices, can infer that then optional channel is unoccupied, and each device has been proceeded the transmission that it is scheduled.As long as there is device report L2604 occupied, then PNC1202 informs that it stops the transmission among the L2604 when next other devices return L1602.
After (iii) after the scanning period 606, do not have operating network in the optional channel if device detects, then this device begins to carry out the transmission that it is scheduled in transmit stage 608.If this device detects the existence of network, then it is back to L1602, and correspondingly reports to PNC1202 in its distributed time slot 618,620.
(iv) for every pair of device, carry out transfer of data by establishing stage, in this establishing stage, source apparatus and destination apparatus exchange message are to promote transfer of data.If the establishing stage failure, then these two devices all are back to L1602, and correspondingly report to PNC1202 in its distributed time slot 618,620.
(v) two pairs of devices successively carry out or carry out simultaneously (if minimum interference therebetween) its transmission that is scheduled.Successively carry out if transmission is scheduled as, then second pair is installed S2210 and D2212 continuation scanning L2604, to guarantee not having other devices just to transmit among the L2604 except S1206 and D1208.No matter be transmission successively or transmission simultaneously, total duration 660(Fig. 6 C of the transmission that is scheduled) on be limited to N * scanning period.N is the variable of the duration of definition transmit stage.For example, N can be the quantity of the transmission among the second channel L2604.The quantity of this transmission can be the quantity of successively transmitting.
(vi) respectively device switches back dedicated channel or remains in the optional channel when finishing in N * scanning period 660.No matter be which kind of mode, each device is all hung up any transmission (in the hang-up stage 610) in the optional channel, and the duration of hang-up is the minimum period 662, this minimum period=B * scanning period.B is the variable of the total duration of definition hang-up stage and next sweep phase.For example, B can be 1,2 or bigger.
(vii) one of them source apparatus is designated as main source, and the echo beacon frame is transmitted in this main source in L2604 when each transmission block begins, the beacon frame that this echo beacon frame simulation is sent in L1602 by PNC1202.In the transmission course of echo beacon frame 614, do not allow any other transmission of other devices in the automatic network among the L2604.
(viii) when (B-1) * scanning period (wherein, transmission is suspended) 662 finished, before transmitting again, all devices scanned L2604 again, and the duration of scanning surpasses the scanning period.
(ix) thus keep with the coordination of PNC1202 and synchronously the time, if needed, S1206 and D1208 and S2210 and D2212 periodically are back to L1602 when PNC1202 is scheduled as the transmission beacon frame.And, in these periods, can change the transmission that is scheduled by PNC1202.
(x) when the end of transmission that is scheduled, S1206 and D1208 and S2210 and D2212 are back to L1602, wait new scheduling.
(xi) coordinate with synchronously in order to keep, S1206 and D1208 and S2210 and D2212 carry out synchronously with PNC1202 by the timestamp in the broadcasting that periodically receives PNC2202 is next, and the time interval that the priority time of reception stabs is short as to be enough to realize in the whole transmission of L2604 slightly synchronously.
Fig. 7 shows flow chart 700, its illustration be scheduled as the operation of the device (for example S1206) that in L2604, moves by AP/PCP1 (for example PNC1202); Convertibly, this AP/PCP1 also can be expressed as PCP/AP1.
The PCP/AP1 scheduling distributes the time started, make that STA S1206 and STA D1208 can receiving scheduling frames (702), and can before distributing the time started, carry out scanning (704) to optional channel (L2604), the duration of execution is maximum beacon interval duration at least.706, determine whether STA is source STA.If a pair of above device is scheduled as in L2604 transmit, then this is designated as main source STA to having the source apparatus that transmits the time started the earliest in the device.The time started of every other distribution is scheduled as than time started of main source STA by PCP/AP1 and postpones a period of time, can make main source finish the transmission of echo beacon frame (for example, the echo beacon frame 614 among Fig. 6 A) during this period of time at least.
If determined that 706 STA is source STA(S1206), then estimate this source STA(S1206 708) whether be main source STA.If then determine whether receive beacon frame in the scanning process 710.If receive 710, then main source STA is back to its dedicated channel, and in 712 reports.If do not receive 710, then send the echo beacon frame to keep optional channel 714.Next, form training (BFT) and/or request renewal affirmation (ACK) at 716 initialization wave beams.Then, in 718 responses of estimating whether to have from twin installation.If do not obtain any response 718, then main source STA is back to dedicated channel, and in 712 reports.If obtained response 718, then detect whether need BFT 720.
708, be not main source STA but source STA(S2210 if determined STA), then in 722 estimation scan processes, whether receive the beacon frame from another network.If do not receive 722, then upgrade affirmation (ACK) at 716 initialization BFT and/or request.If receive 722, then source STA is back to dedicated channel, and in 724 reports.
If determine that 706 STA is not source STA, this means that STA is target STA.In 726 estimation scan processes, whether receive the beacon frame from another network then.If receive 726, then target STA is back to dedicated channel, and in 724 reports.If do not receive 726, then in the 728 BFT/ACK requests that determine whether to receive from twin installation.If do not receive 728, then target STA is back to dedicated channel, and in 724 reports.If receive 728, then in 720, detect whether need BFT.
If in 720, need to have determined BFT, then in 730, begin BFT.Next, according to the scheduled for executing transfer of data, and simultaneously, main source STA sends the echo beacon frame in each maximum beacon interval in the duration in 732.In 734, detect whether exceed the maximum transmitted period.
If having determined in 720 does not need BFT, then in 736, begin ACK, and in 738, detect whether need new BFT.If having determined needs new BFT, then in 730, begin BFT in 738.If in 738, do not need to have determined new BFT, then in 732 according to the scheduled for executing transfer of data, and simultaneously, main source STA sends the echo beacon frame in each maximum beacon interval in the duration.
If in 734, exceeded the maximum transmitted period, then in 740, determine whether to be back to dedicated channel.
If in 734, do not exceed the maximum transmitted period, then in 742, determine whether to finish transmitting and scheduling.If in 742, do not finish transmitting and scheduling, then in 732 according to the scheduled for executing transfer of data, and simultaneously, main source STA sends the echo beacon frame in each maximum beacon interval in the duration.If finished transmitting and scheduling in 742, then STA is back to dedicated channel, and waits new scheduling in 744.
If determined to be back to dedicated channel in 740, then STA is back to dedicated channel, and waits new scheduling in 744.If in 740, determined not need to be back to dedicated channel, then in 746, hang up transmission.Next, the optional channel of multiple scanning (L2604) before distributing the time started, this scanning continues the maximum beacon interval duration (in 704) at least.
PCP/AP1 also guarantees, is being every pair of device after time started of distributing in the back to back beacon interval, is PCP/AP1 scheduling time, to communicate with each device in the AT process.If L2604 is unoccupied, each device continues its transmission, and can set up link between source and target.Otherwise each device is back to L1602, report that it fails to finish the reason of this transmission, and wait is from the further indication of PCP/AP1.
The PCP/AP1 hypothesis: the response that does not receive in the time that is scheduled from a pair of device means that transmission is successful.Otherwise, the scheduling that each device transmission DELTS frame of expectation is assigned to deletion, and report the reason that it is failed to finish this transmission or fails when setting up with the linking of optional channel.The example of the cause code field value that will transmit in the DELTS frame has been shown in table 2
Table 2
| Reason-code | Implication |
| 67 | In optional channel, set up the transmissions links failure |
| 68 | Optional channel is occupied |
According to routine the access period among the L2604 is scheduling to CBAP or SP, but the access period at least the earliest is necessary for SP.CBAP among the L2604 can be used by AP/PCP1, with after initialization arranges more device send among the L2604 and move.
In transmission or hang-up stage, each device that moves in L2604 periodically is back to L1602, to come with AP/PCP1 synchronous by receiving beacon frame or the notification frame sent by AP/PCP1.After transmission block finishes in the back to back beacon interval, the time slot among the AP/PCP1 scheduling AT, with L2604 in respectively device of moving communicate.Expect that all devices all are back to L1602 in the time that these are scheduled, to communicate with PCP/AP1.In these AT processes, each device can be reported failure (if generation) by the DELTS frame that transmission has a suitable reason-code, with the transmission of proceeding to be scheduled.PCP/AP1 also can use these AT to dispatch more device and move in optional channel.And if PCP/AP1 receives the information that L2604 is taken by another network from any device that is sent to L2604, then PCP/AP1 as far as possible the earliest time point in these AT informs that remaining device stops the transmission among the L2604.
As mentioned above, according to the method for each embodiment, the wireless network that is used for special-purpose letter band is existed is dispatched in a plurality of optional letter bands each to the transmission of the chance formula between the network equipment, thereby improves network throughput, wherein a plurality of optional letter bands are not taken by other wireless networks, and this method comprises:
-device by wanting to send and receive in optional channel scans wherein the optional channel of scheduled transmission and continues a time period, thereby determines the vacant of this optional channel before actual data transfer.
-by be scheduled as the mandatory member who sends and receive in optional channel, fast transmission can be by the notification frame of the device identification that moves in optional channel repeatedly, thereby indicates this channel to be taken by network equipment.
-the transmission that will be scheduled is divided into piece, and the duration of each transmission block is limited to a maximum, and each adjacent transmission block is the interval with the period of not transmitting in the optional channel.
Further, according to the method for each embodiment, be used for the wireless network that moves at a plurality of channel bands is carried out synchronously and coordinates, wherein a plurality of channel bands are by the single network telegon control that moves in channel band therein, and this method comprises:
-by network controller, in its original channel frequency band, broadcast transmission one timestamp repeatedly fast, thus timestamp can use synchronous with network controller by all devices in the network.
All devices that move in the channel band of-order outside the original channel frequency band of network controller all periodically switch back the original channel frequency band at correct time point, thereby receive the timestamp by network controller broadcasting, and each device of regulation is back to the original channel frequency band too much early and stabs by the network controller time of reception, thereby offsets the smallest synchronization mismatch between the priority broadcasting of each device timestamp to be received.
-in the original channel frequency band, be the device scheduling slot time slot that in other channel bands, moves, so that it is back to the original channel frequency band, thereby communicate with network controller, wherein communication can be two-way communication, for each device and network controller exchange message, also can be one-way communication, relay dispatch command to the network controller report or for network controller to each device for each device.
Method according to each embodiment has advantageously improved network throughput (if needed) by operation in a plurality of letter bands, and does not need to increase the hardware complexity that installs in the network.It also makes can be with operation at a plurality of letters by the single network of network control management, and wherein, the frequency spectrum that this network controller is coordinated in the dedicated channel bandwidth inserts, and the chance formula frequency spectrum of dispatching in other optional channel widths inserts.
Further, according to the method for each embodiment optional channel of scanning vacant with acknowledgement channel before transmission, thereby the chance formula of guaranteeing to be scheduled in optional channel transmission can not disturbed other networks that move in this optional channel, and method has been formulated the time period in the optional channel, in this time period, should transmission hang up by the device in the network, thereby guarantee that the single network that other networks that will start can not be subjected to moving hinders, and allows to set up other networks thus in this optional channel in this optional channel in a plurality of channel channels.Described method also is very suitable for as one group of MAC actualizing, and this agreement allows the network that moves in a plurality of channel widths is carried out effective coordination, keep between each device synchronously, and the frequency spectrum of scheduling different channels bandwidth inserts.
Though illustrate and described the present invention especially with reference to specific implementations, it will be understood by those skilled in the art that and to enclose under the prerequisite of the spirit and scope that claims limit these execution modes are carried out modification on various forms and the details not breaking away from the present invention.Therefore, scope of the present invention is indicated by the claims of enclosing and is intended to comprise all implications that fall into its equivalent and the modification in the scope.
Claims (20)
1. a communicator is configured at two communication terminals for using network to register, operational network in first frequency band, and described communicator comprises:
Controller can be used for communication if be configured to second frequency band, then indicates described two communication terminals to carry out transmission between described two communication terminals in described second frequency band.
2. communicator as claimed in claim 1, wherein said first frequency band is different with described second frequency band.
3. communicator as claimed in claim 1, wherein said second frequency band is not used by another network.
4. communicator as claimed in claim 1, wherein said controller are configured to indicate described two communication terminals to detect described second frequency band whether to can be used for communication, and if described second frequency band can be used for communication then carry out transmission.
5. communicator as claimed in claim 1, wherein said controller further is configured to property dispatching cycle time slot in described first frequency band, so that described two communication terminals that transmit in described second frequency band turn back to described first frequency band, to communicate with described communicator.
6. communicator as claimed in claim 1 further comprises:
Receiver is configured to receive whether available message of described second frequency band of indication; And
Transmitter if it is occupied to be configured to described second frequency band, then sends termination messages to described two communication terminals, makes described two communication terminals stop at the interior transmission of described second frequency band.
7. communicator as claimed in claim 1, wherein said communicator comprises access point, individual Basic Service Set central point or piconet coordinator.
8. communication terminal of registering for the network that uses in first frequency band, to move, described communication terminal comprises:
Receiving circuit can be used for communication if be configured to second frequency band, the instruction of the transmission between another communication terminal of then receive to be used for carrying out and registering for the network that uses in described second frequency band.
9. communication terminal as claimed in claim 8 can be used for communication if wherein said communication terminal is configured to described second frequency band, the then transmission between execution and described another communication terminal in described second frequency band.
10. communication terminal as claimed in claim 8, wherein said communication terminal turns back to described first frequency band when being further configured and being scheduled to broadcast the signal that comprises timestamp for the communicator when network, described timestamp is used for making described communication terminal and described communicator synchronous.
11. communication terminal as claimed in claim 8 further comprises: transmission circuit is configured to send the message whether described second frequency band of indication can be used for communicating by letter to the communicator of network; And detector, be configured to indicate the notification signal that has another network in described second frequency band by detecting, and it is occupied to detect described second frequency band.
12. the method for a coordination network operation, described method comprises:
At two communication terminals for using described network to register, the described network of operation in first frequency band; And
If second frequency band can be used for communication, then indicate described two communication terminals in described second frequency band, to carry out transmission between described two communication terminals.
13. method as claimed in claim 12 further comprises: detect described second frequency band and whether can be used for communication, and if described second frequency band can be used for communication then carry out transmission.
14. method as claimed in claim 13, whether wherein detect described second frequency band can be used for communicating by letter be based at least one request from described two communication terminals, the request that wherein said request comprises data transfer request or wants to move in described second frequency band.
15. method as claimed in claim 12, further comprise the periodicity time slot in described first frequency band of scheduling, make described two communication terminals that in described second frequency band, transmit turn back to described first frequency band, to communicate with the communicator that is configured to move described network.
16. method as claimed in claim 12 further comprises if described second frequency band is occupied, then sends termination messages to described two communication terminals, makes described two communication terminals stop at the interior transmission of described second frequency band.
17. method as claimed in claim 12, comprise further wherein when the communicator of network is scheduled to broadcast the signal that comprises timestamp, making described two communication terminals turn back to described first frequency band that described timestamp is for making described two communication terminals and described communicator synchronous.
18. method as claimed in claim 12 further comprises if described second frequency band is occupied, sends deletion message, to delete the transmission of described two communication terminals in described second frequency band.
19. method as claimed in claim 12 further comprise the notification signal that has another network in described second frequency band of indication by detecting, and it is occupied to detect described second frequency band.
20. method as claimed in claim 12, wherein said method comprises: if described second frequency band can be used for communication, then indicate and many communication terminal is carried out transmission in described second frequency band; And
Wherein said transmission is divided into piece; And wherein each piece is spaced apart with the period that does not have operation in the described second channel.
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