CN100464612C - Digital trunking communication method with control channel frequency hopping function - Google Patents
Digital trunking communication method with control channel frequency hopping function Download PDFInfo
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Abstract
一种具有控制信道跳频功能的数字集群通信方法，包括集群模式和直通模式，前者是指存在信息基础设施(如：区域控制器、基站等)时的工作模式，它又可分为单基站模式和多基站模式(此时，存在区域控制器)；后者是指不存在信息基础设施、只有移动台时的工作模式。跳频包括控制信道跳频和业务信道跳频，采用时分多址(TDMA)体制，其中，Nts个时隙(Nts□4)构成一帧空中帧，Nsf帧空中帧构成一帧超帧，在超帧中某一帧或几帧可以用来传输随路信令，在每个时隙内，根据当前逻辑信道的不同填充不同信息。在一个载波的一帧超帧时间内可以构成一帧完整的跳频同步帧。跳频方式采取时隙跳频的方式，每个时隙所采用的跳频频率集和跳频图案均可以不同。不同的跳频频率集和不同的跳频图案可以构成不同的逻辑信道，用于发送不同的信息。
A digital trunking communication method with control channel frequency hopping function, including trunking mode and direct mode, the former refers to the working mode when information infrastructure (such as: regional controller, base station, etc.) exists, and it can be divided into single base station Mode and multi-base station mode (at this time, there is a regional controller); the latter refers to the working mode when there is no information infrastructure and only mobile stations. Frequency hopping includes control channel frequency hopping and traffic channel frequency hopping, and adopts the time division multiple access (TDMA) system, wherein, N ts time slots (N ts □4) constitute a frame of air frame, and N sf frames of air frame constitute a frame of super A certain frame or several frames in a super frame can be used to transmit channel-associated signaling, and in each time slot, different information is filled according to the current logical channel. A complete frequency hopping synchronization frame can be formed within one superframe time of one carrier. The frequency hopping mode adopts a time slot frequency hopping mode, and the frequency hopping frequency set and frequency hopping pattern used in each time slot can be different. Different frequency hopping frequency sets and different frequency hopping patterns can constitute different logical channels for sending different information.
Description
Technical field
The present invention relates to wireless communication technology, mainly be meant a kind of digital cluster communication method with control channel frequency hopping function.
Background technology
Frequency hopping is one of the most frequently used spread spectrum mode, its operation principle is meant that the carrier frequency of receiving-transmitting sides transmission signals is according to being scheduled to the communication mode that rule is carried out Discrete Change, that is to say that the carrier frequency of using in the communication is subjected to pseudorandom to change the control of sign indicating number and random jump.On time domain, Frequency Hopping Signal is a multifrequency frequency shift keyed signals; From frequency domain, the frequency spectrum of Frequency Hopping Signal one on very wide frequency band with the unequal interval random jump.
Compare with fixed communication frequently, more hidden also being difficult to of frequency hopping communications intercepted and captured.As long as the other side does not know the rule of carrier frequency saltus step, just be difficult to intercept and capture Content of Communication.Simultaneously, frequency hopping communications also has good antijamming capability, even there is the part frequency disturbed, still can communicate by letter normally on other not disturbed frequencies.And because frequency-hopping communication system is instantaneous narrowband systems, therefore, it is easy to the narrow-band communication system compatibility with other, such as: frequency hopping radio set can with radio station, the arrowband intercommunication of routine, so, help the level and smooth renewal of equipment.
At present, in digital clustering communication system, FHMA (the Frequency Hopping MultipleAccess that has only Israel, Frequency Hopping Multiple Access FHMA) to have adopted frequency hopping, hop rate be 150 jumping/seconds in system (this system be in the ITU of International Telecommunications Union seven kinds of international digital cluster communication standards of recommending a kind of).And, in the FHMA communication system, control channel not frequency hopping, only the Traffic Channel frequency hopping arranged.Here, business information such as " control channel ", data non-voice for control, management information with regard to the information that is meant this channel; Corresponding, " Traffic Channel " is business information such as speech, data with regard to the information that is meant this channel.In the FHMA system, the control channel of each base station is the wireless channel of pre-configured fixedly frequency, control channel and the base station of travelling carriage by fixing frequency carried out signaling and linked up, and carries out normal service communication by control channel notice travelling carriage by the base station on some frequency hopping Traffic Channels then.And the cycle of the Traffic Channel frequency hop sequences in the FHMA system is that fix rather than pseudorandom, can repeat once every 72 frames.
In public's cellular radio Communication system GSM, the base station also can work in the frequency hopping mode, identical with the FHMA system, and control channel also is a frequency hopping not under the frequency-hopping mode of gsm system, has only Traffic Channel to adopt the frequency hopping mode.
In fact, because the channel quality of control channel is extremely important for the normal operation of entire wireless communication system, therefore not the frequency hopping frequency diversity that causes control channel to enjoy to bring and the benefit of interference diversity of control channel owing to frequency-hopping spread spectrum, make the antijamming capability of control channel be weaker than Traffic Channel, thereby may occur under extreme case that control channel is seriously disturbed and situation that the communication of Traffic Channel can't normally be carried out at all.And control channel not frequency hopping makes the antijamming capability of whole system, particularly anti-ly has a mind to interference capability and reduces greatly.
Summary of the invention
The purpose of this invention is to provide a kind of digital cluster communication method with control channel frequency hopping function, by the frequency hopping networking under control channel frequency hopping and the control channel frequency hopping situation is set, realize the communication mode of control channel and the equal frequency hopping of Traffic Channel in the digital clustering communication system, solved the problem that control channel in the existing trunked communication system can not frequency hopping.
Realize that technical scheme of the present invention is: this communication means comprises cluster mode and direct mode operation, and its major technique is:
Cluster mode comprises single base station networking and many base station networkings, when wherein single base station networking is worked, the base station produces frequency hopping synchronizing frequency collection and frequency hopping communications frequency set according to certain algorithm, recycles the concentrated frequency of frequency hopping synchronizing frequency then and send hopping synchronization information on frequency hopping synchronizing channel and frequency hopping service channel; When many base station networkings are worked, zone controller (claiming Regional Control Center again) produces frequency hopping synchronizing frequency collection and frequency hopping communications frequency set according to certain algorithm, then they together are dispensed to each base station in company with the frequency hopping running parameter, the frequency hopping running parameter that each base station is set according to zone controller recycles and distributes the concentrated frequency of frequency hopping synchronizing frequency that obtains to send hopping synchronization information on frequency hopping synchronizing channel and frequency hopping service channel; For travelling carriage, no matter be single base station networking or many base station networkings, each travelling carriage is all kept the concordance list of all frequencies of whole system, after the start, when working in cluster mode, go out frequency hopping synchronizing frequency collection according to certain algorithm computation, recycle the frequency scanning wireless channel in this frequency set then, up to receiving the hopping synchronization information that the base station sends, it is synchronous after this just can to obtain frequency hopping from the base station, and then communicates with it;
When leading directly to mode of operation, travelling carriage goes out local frequency hopping synchronizing frequency collection and frequency hopping communications frequency set according to certain algorithm computation, when accepting state, travelling carriage recycles the frequency scanning wireless channel that the frequency hopping synchronizing frequency is concentrated, if find to have travelling carriage to its transmission information, then from the frequency hopping synchronizing channel of transmit leg or frequency hopping service channel, obtain hopping synchronization information, communicate with it then; When transmit status, travelling carriage at first recycles the concentrated frequency of frequency hopping synchronizing frequency and send hopping synchronization information on the frequency hopping synchronizing channel, enter normal communication state then, simultaneously, still intermittent cyclic uses frequency hopping synchronizing frequency collection to send hopping synchronization information as duties information when normal communication state, on the frequency hopping service channel, send, to realize the slow networking of frequency hopping.
This technical scheme also comprises:
Described frequency hopping comprises control channel frequency hopping and Traffic Channel frequency hopping, adopts time division multiple access (TDMA) system, wherein, and a carrier wave
Individual time slot (
) formation one frame air frame,
The frame air frame constitutes a frame superframe, a certain frame or a few frame can be used for transmitting channel associated signalling in superframe, in each time slot, fill different information according to the difference of present frame content, and in the frame superframe time of a carrier wave, transmission information can be formed the complete frequency hopping synchronization frame of a frame.
Described frequency hopping adopts the method for time slot frequency hopping, that is: the frequency hopping frequency set that each time slot adopted all can be different with frequency hopping pattern, different frequency hopping frequency sets constitutes different logic channels with different frequency hopping patterns, be used for sending different information, such as: some time slot adopts frequency hopping synchronizing frequency collection and frequency hopping synchronization pattern, and then these time slots have just constituted the frequency hopping synchronizing channel; Some time slot adopts frequency hopping communications frequency set and Traffic Channel frequency hopping pattern, and then they have just constituted Traffic Channel.
Frequency hopping mode under the described cluster mode comprises the synchronous and proper communication of frequency hopping, wherein frequency hopping realizes by obtain hopping synchronization information from frequency hopping synchronizing channel or frequency hopping service channel synchronously, travelling carriage obtain frequency hopping synchronously after, can enter normal course of communications.
Described frequency hopping comprises synchronously:
The hopping scheme of frequency hopping synchronizing channel and frequency hopping service channel is: the frequency hopping frequency set adopts frequency hopping synchronizing frequency collection (comprising some to the uplink and downlink frequency), frequency hopping pattern to adopt the frequency hopping pattern (claiming frequency hop sequences again) of " sequential loop jumping ";
After the mobile platform started, if work in cluster mode, the frequency hopping that circulates of the frequency hopping synchronizing frequency collection under the cluster mode that calculates according to this locality then, search receives the hopping synchronization information of base station, according to the majority decision principle, the hopping synchronization information of acquisition current base station is also followed the tracks of current base station and is carried out frequency hopping;
The base station will be in Common Control Channel frequency parameter, the synchronizing information of broadcast transmission adjacent base station, like this, travelling carriage has also just obtained frequency parameter, the synchronizing information of adjacent base station simultaneously.
Described handover comprises:
Travelling carriage is with when communicate by letter in base station 1, the frequency parameter and the hopping synchronization information such as TOD of reception 1 relevant adjacent base station that sends from the base station, after obtaining this information, judge the signal strength signal intensity of the frequency hopping synchronizing channel of adjacent base station by the mode of synchronous scanning (synchronous network) or slow scanning (asynchronous networking), this scanning can be carried out simultaneously with communicating by letter of Traffic Channel, carries out in the time of also can utilizing Traffic Channel idle;
Travelling carriage judges whether that according to a certain handover thresholding that sets in advance needs carry out handover then by judging the signal strength signal intensity from each adjacent base station, if need, then carries out following operation:
1) after handover is carried out in the travelling carriage decision, sends soft handover claim frame (identifier, the handoff request and the base station identifier that will switch, that is: the identifier of base station 2 that comprise base station 1), after receive base station 1, this request is sent to base station 2 to base station 1;
2) after base station 2 receives this request, judge whether that enough channel resources can be for utilizing;
3) if there are enough channel resources base station 2, then accept this handoff request, and distribute respective resources to give mobile radio station, simultaneously with this information informing base station 1;
4) base station 1 sends handover information (comprising the traffic channel information of distributing to travelling carriage) to travelling carriage;
5) after certain scheduled time of interval, travelling carriage is proceeded to communicate by letter by the Traffic Channel of base station 2 with base station 2.
If need carry out direct-cut operation,, therefore, realize proper communication thereby can directly on the Common Control Channel of adjacent base station, initiate to insert request equally then because travelling carriage has obtained the frequency parameter and the hopping synchronization information of adjacent base station by current base station.
Frequency hopping mode during described proper communication comprises: obtain the hopping synchronization information of base station at travelling carriage after, insert will on Common Control Channel, taking place alternately of request, channel allocation signaling, and then just can allow both sides on a certain Traffic Channel, carry out proper communication in the frequency hopping mode by both sides' Signalling exchange.
Frequency hopping mode under the described direct mode operation is meant the communication employing principal and subordinate working method between the travelling carriage, a side who at first makes a call is a main website, the recipient is a slave station, the synchronous needed TOD information of frequency hopping is sent by main website, whole communication process is divided into frequency hopping synchronous phase and proper communication stage, and wherein frequency hopping comprises synchronously:
The frequency that main website concentrates with the frequency hopping synchronizing frequency according to the mode that circulation is jumped sends a certain predefined frame number continuously;
Slave station only otherwise in normal communication state, then it just concentrates optional frequency to be in the monitoring channel state from the frequency hopping synchronizing frequency, if receive certain frequency hopping synchronization frame, judges then whether this information is correct, as if correctly then separating jumping; If the frequency hopping synchronization frame that receives is incorrect, but incoming level (RSSI) surpasses a certain thresholding, noise really admits a fault, then the order according to the synchronizing frequency collection skips to next frequency reception next frame frequency hopping synchronization frame, follow main website simultaneously and carry out frequency hopping, if the selected a certain frequency of slave station does not receive effective frequency hopping synchronization frame in a certain scheduled time, then the other frequency of selective sequential receives again.
Described frequency hopping comprises synchronously: if the called call answering that carries out of information requirements in the frequency hopping synchronization frame of main website, then from stand in correctly receive hopping synchronization information after, send response message immediately to main website, after main website is received, confirmation is replied in transmission, after both sides shake hands and finish, enter the proper communication stage.
The asynchronous quadrature networking of described cluster mode comprises the mode of taking frequency-division section networking, channeling, and neighbor cell is distinguished by using different frequency hopping frequency set, is just distinguished by the mode of frequency quadrature; And the different user in the same sub-district is owing to being synchronized with common base station, so they can distinguish by the frequency hop sequences of synchronized orthogonal.
The synchronized orthogonal networking of described cluster mode comprises the mode of taking the whole network to use same frequency hopping frequency set, and the channeling ratio is 1, and the frequency hopping frequency points of each sub-district is N, wherein
Fixedly setting up under the situation, the mode that the whole network adopts synchronously can have two kinds: the whole network under wired mode is synchronous, as: by SDH mechanism; Big-dipper satellite time service by GPS or China is synchronous;
In base station " motion " or the base station is motor-driven sets up under the situation, the mode that the whole network adopts synchronously is that the time service of GPS or big-dipper satellite is synchronous;
Synchronous for frequency hopping, for the hopping control channel that guarantees each base station (sub-district) in the synchronized orthogonal net is a quadrature, the frequency hopping synchronizing frequency is concentrated and should be comprised 3 frequencies at least;
Simultaneously, for fast synchronously, improve the frequency hopping synchronizing speed, the frequency points that the frequency hopping synchronizing frequency is concentrated should be lacked as far as possible, and suggestion is 3,5,7 or 12.
The frequency hopping synchronizing frequency collection under the described cluster mode and the generation of frequency hopping communications frequency set and distribution comprise when digital clustering communication system works in many base station modes, produce the frequency hopping frequency set by Regional Control Center, notify each base station with frequency hopping frequency set information then; When digital clustering communication system works in single base station mode, produce required frequency hopping synchronizing frequency collection and frequency hopping communications frequency set by the base station; When travelling carriage is in straight-through mode of operation, produce frequency hopping synchronizing frequency collection and frequency hopping communications frequency set by travelling carriage self.
The beneficial effect that the present invention has: adopt the present invention, digital clustering communication system can not only improve frequency efficiency, and the more important thing is, no matter at cluster mode still under direct mode operation, control channel and Traffic Channel have all realized frequency hopping, thereby can improve the antijamming capability of entire wireless communication system, therefore be particularly suitable for interference ratio than in serious environmental or the military communication environment.
Description of drawings
Fig. 1 is zone controller of the present invention (claiming Regional Control Center again), base station and travelling carriage schematic diagram, wherein connect by wireless mode between MS and the BS, and both can be between BS and the zone controller by wireless mode, also can connect by wired mode.
Fig. 2 is that EM equipment module of the present invention constitutes schematic diagram.
Fig. 3 is TOD of the present invention (Time of Day) information schematic diagram.
Fig. 4 is an air frame schematic diagram of the present invention.
Fig. 5 is the mapping relations schematic diagram of physical channel and logic channel under the cluster mode of the present invention.
Fig. 6 is the mapping relations schematic diagram of physical channel and logic channel under the direct mode operation of the present invention.
Fig. 7 is the slave station schematic flow sheet when need not called call answering under the direct mode operation of the present invention.
Fig. 8 is the slave station schematic flow sheet when needing called call answering under the direct mode operation of the present invention.
Fig. 9 is a master/slave station communication process schematic flow sheet under the direct mode operation of the present invention.
Figure 10 is carrier wave of the present invention/time slot schematic diagram.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing:
1, the technical problem that will solve
In FHMA (Frequency Hopping Multiple Access, Frequency Hopping Multiple Access FHMA) digital clustering communication system, control channel adopts frequently fixed, only has Traffic Channel to adopt frequency hop spread spectrum.The shortcoming of this scheme is that anti-to have a mind to interference performance relatively poor, control channel or not may not take place during frequency hopping seriously to be disturbed and the still good situation of Traffic Channel quality, because control channel lost efficacy, therefore will cause this moment the entire wireless communication system can't operate as normal.
At this problem, the present invention proposes a kind of control channel frequency-hopping method, solve the problem of frequency hopping networking under the situation of control channel frequency hopping, thereby realized control channel and the equal frequency hopping of Traffic Channel in the digital clustering communication system.And the user that the method that the present invention proposes can be implemented under the direct mode operation communicates by the frequency hopping mode.The communication equipment that the present invention relates to comprises zone controller, base station (BS) and travelling carriage (MS), as shown in Figure 1.
The technical scheme of 2, dealing with problems
2.1 general introduction
For frequency hopping communications, frequency hopping is very important key technology synchronously.And for large-scale digital clustering communication system, under the situation of control channel frequency hopping, except frequency hopping was synchronous, frequency hopping networking and handover also were very important key technologies.The present invention proposes several different frequency hopping network-building methods, and provided the method for handover under the situation of many base stations.
When digital clustering communication system is in the frequency hopping mode of operation, send corresponding frequency hopping mode parameter by zone controller to each BS, these parameters comprise frequency point allocation mode, frequency hopping networking mode etc., and each BS just can carry out work according to corresponding frequency parameter then.The module of each equipment constitutes as shown in Figure 2.
2.2 the frequency hopping networking under the cluster mode
The frequency hopping networking mode that adopts among the present invention has asynchronous quadrature networking and synchronized orthogonal networking dual mode.Below narrate it respectively.
2.2.1 asynchronous quadrature networking
Digital clustering communication system is taked the mode of frequency-division section networking, channeling, can consider that frequency duplex factor as one is 1/3.At this moment, the frequency points of each sub-district is N/3, that is: neighbor cell is distinguished by using different frequency hopping frequency set, is just distinguished by the mode of frequency quadrature; And the different user in the same sub-district is owing to being synchronized with common base station, so they can distinguish by the frequency hop sequences of synchronized orthogonal.
2.2.2 synchronized orthogonal networking
Digital clustering communication system takes the whole network to use the mode of same frequency hopping frequency set, and the channeling ratio is 1.At this moment, the frequency hopping frequency points of each sub-district is N.
Fixedly setting up under the situation, the mode that the whole network adopts synchronously can have two kinds: the whole network under wired mode is synchronous, as: by SDH mechanism; Big-dipper satellite time service by GPS or China is synchronous.
In base station " motion " or the base station is motor-driven sets up under the situation, the mode that the whole network adopts synchronously is that the time service of GPS or big-dipper satellite is synchronous.
For frequency hopping was synchronous, for the hopping control channel that guarantees each base station (sub-district) in the synchronized orthogonal net is a quadrature, the frequency hopping synchronizing frequency was concentrated and should be comprised 3 frequencies at least.
Simultaneously, for fast synchronously, improve the frequency hopping synchronizing speed, the frequency points that the frequency hopping synchronizing frequency is concentrated should be lacked as far as possible, and suggestion is 3,5,7 or 12.
2.3 the generation of frequency hopping frequency set and distribution
When digital clustering communication system works in many base station modes, produce the frequency hopping frequency set, comprise frequency hopping synchronizing frequency collection and frequency hopping communications frequency set under the cluster mode, notify each base station with frequency hopping frequency set information then by Regional Control Center; When digital clustering communication system works in single base station mode, produce required frequency hopping synchronizing frequency collection and frequency hopping communications frequency set by the base station.When travelling carriage is in straight-through mode of operation, produce frequency hopping synchronizing frequency collection and frequency hopping communications frequency set by travelling carriage self.
Because frequency hopping is the most important thing for whole frequency-hopping communication system synchronously, therefore, the generation of frequency hopping synchronizing frequency collection and distribute most important.The present invention proposes a kind of production method of frequency hopping synchronizing frequency collection.
At first, each communication equipment (zone controller, base station and travelling carriage) is all kept the concordance list of the frequency hopping frequency of a whole system.Used frequency index is according to a certain rule or algorithm (as: frequency interval between the true frequency of the frequency correspondence of adjacent index should be big as far as possible) calculating and next in the system, and this table is divided into two parts: a part is the frequency hopping frequency sets that is used for cluster mode; Another part is the frequency hopping frequency sets that is used for direct mode operation.Just can from this concordance list, take out some frequencies by method proposed by the invention and constitute frequency hopping synchronizing frequency collection under the cluster mode and the frequency hopping synchronizing frequency collection under the direct mode operation.
In second step, need to determine to calculate the employed temporal information of frequency hopping synchronizing frequency collection, that is: TOD (Time of Day) information.In frequency hopping communications, often need utilize temporal information (TOD) to produce frequency hopping frequency set or frequency hop sequences.In this method, we utilize local time information to produce frequency hopping synchronizing frequency collection, and wherein: the binary system of temporal information (year, month, day, hour, min, second) can be represented (see figure 3) with following mode:
In Fig. 3, the purpose of representing with 6 bits in year is to produce the temporal information of 32 bits, and being convenient to the byte is that unit handles.
In the 3rd step, frequency is chosen process.If system can with frequency add up to 256, frequency hopping synchronizing frequency and concentrate and comprise 5 frequencies altogether, then get certain 8 bit in top 32 bits as the basic point of choosing frequency hopping synchronizing frequency collection.It is as follows specifically to choose process:
1) with 8 bits chosen as index value (i), from the frequency concordance list, take out first frequency;
2) with 8 bit values (i) elected above as the center index value, choose 2 frequencies successively forward, backward again, that is: the index value of all the other 4 frequencies is respectively i-1, i+1, i-2 and i+2.Wherein: the index value of all the other 4 frequencies is the positive integers to 256 deliverys.
If the frequency points that the frequency hopping synchronizing frequency is concentrated is not an odd number, and is then just unequal to the forward and backward frequency quantity that obtains, can select forward or backward frequencies of getting at random more.
If need to produce the frequency hopping synchronizing frequency collection of many group quadratures, then the frequency set that can produce with said method is as basic frequency hopping synchronizing frequency collection, can obtain doing some computings when " the asynchronous quadrature networking " that propose below (as: used compute mode) between this frequency set and the frequency hopping frequency concordance list then.
For different mode of operations and networking mode, the concrete production method of frequency hopping synchronizing frequency collection is as follows:
1., the asynchronous quadrature networking under the cluster mode
If cluster mode can with frequency add up to that 256, frequency duplex factor as one are 1/3, the frequency points of frequency hopping synchronizing frequency collection is 5, then produce a basic frequency hopping synchronizing frequency collection according to the year information (6 bit) of TOD and high 2 of month information, then they are offset 5,10 respectively and can obtain two other frequency hopping synchronizing frequency collection of quadrature with it, thereby obtain the frequency hopping synchronizing frequency collection of three quadratures.When many base station networkings, zone controller will be the frequency hopping synchronizing frequency collection distribution of information that produces to each base station, thereby is completely orthogonal between the frequency hopping synchronizing frequency collection between each base station.When the work of single base station, the base station produces a basic frequency hopping synchronizing frequency collection according to same method, just can carry out work with the frequency in this frequency set on frequency hopping synchronizing channel and frequency hopping service channel then.
For travelling carriage, under cluster mode, it does not know the networking mode of this moment, therefore, and the frequency hopping synchronizing frequency collection when it at first goes out asynchronous quadrature networking according to above-mentioned algorithm computation.Simultaneously, the computational methods during according to synchronized orthogonal networking described below calculate another group frequency hopping synchronizing frequency collection, and the union of getting these two frequency sets then is as the frequency hopping synchronizing frequency collection under the cluster mode of travelling carriage.
2., the synchronized orthogonal networking under the cluster mode
Because during the synchronized orthogonal networking, the whole network uses unified frequency hopping frequency set, therefore, the generation of frequency hopping synchronizing frequency collection is identical with the production method of single base station, the frequency hopping synchronizing frequency collection that each base station assigns obtains is identical, but the FH Sequence Design method that adopts synchronized orthogonal can guarantee that between the frequency hopping synchronizing channel of each base station and the employed frequency hopping pattern of frequency hopping service channel be quadrature, does not repeat them here.
For travelling carriage, the computational methods of the computational methods of its frequency hopping synchronizing frequency collection during with the asynchronous quadrature networking under the cluster mode are the same.
3., direct mode operation
Under direct mode operation, each travelling carriage produces frequency hopping synchronizing frequency collection according to the clock information and the said method of this locality.Different with cluster mode is, in computational process, travelling carriage uses is frequency hopping frequency set under the direct mode operation.
2.4 the frequency hopping mode of control channel and Traffic Channel and aerial framing
The digital clustering communication system that the present invention is suitable for adopts time division multiple access (TDMA) system.In this system, a carrier wave
Individual time slot (
) formation one frame air frame,
The frame air frame constitutes a frame superframe, and wherein: a certain frame or a few frame can be used for transmitting channel associated signalling in superframe.The air frame structural representation as shown in Figure 4.
In each time slot, fill different information according to the difference of current logic channel.For example: current time slots is the frequency hopping synchronizing channel, then fills hopping synchronization information; Current time slots is the voice service channel, then fills speech information.
2.4.1 carrier wave and time slot
As shown in figure 10, in the present invention, carrier wave and time slot constitute the available wireless channels space of two dimension jointly." carrier wave " herein is meant some concrete emissions or receiving equipment, and this equipment can only carry out work with some frequencies in some moment, as: some channel devices of base station; " time slot " is meant time dividing unit that should " carrier wave ".For example: be the carrier wave and the time slot schematic diagram of a base station among Figure 10, it represents that this base station has four carrier waves, each carrier wave has four time slots.
Said among the present invention " control carrier wave " is meant the carrier wave that has comprised frequency hopping synchronizing channel and Common Control Channel in this carrier wave; " common carrier wave " then is meant the carrier wave except " control carrier wave ".
2.4.2 physical channel
Physical channel just is meant what an above-mentioned carrier wave can transmit
Individual time slot, that is: the physical channel quantity on each carrier wave is
Individual, be numbered 0
Therefore, for certain communication equipment, the physical channel quantity that has altogether is that carrier number multiply by timeslot number.Such as: base station one total 4*4=16 the physical channel shown in Figure 10.
2.4.3 logic channel
Logic channel is different division of content of transmitting according to physical channel, and it can be divided into control channel and Traffic Channel, and wherein: control channel is divided into frequency hopping synchronizing channel, frequency hopping service channel, Common Control Channel and associated control channel.For a base station, the frequency hopping synchronizing channel takies the 0th time slot of control carrier wave; Common Control Channel takies the 1st time slot of control carrier wave; Associated control channel and frequency hopping service channel take in each carrier wave superframe structure
Frame; Traffic Channel takies other time slot.
Concrete, can be referring to Fig. 5 and Fig. 6.They have expressed an example of the mapping relations of physical channel under cluster mode and the direct mode operation (4 time slots of a carrier wave) and logic channel respectively.
The effect of frequency hopping synchronizing channel and frequency hopping service channel is:
* cluster mode:
Make travelling carriage can in time obtain the hopping synchronization information of the base station in the sub-district of living in, as: TOD, control channel
Information such as frequency hop sequences;
* direct mode operation:
Make travelling carriage can obtain jumpings such as frequency hopping synchronous phase and needed TOD of proper communication stage, cipher key index
The frequency synchronizing information.
2.4.4 frequency hopping mode
The present invention adopts the frequency hopping of time slot frequency hopping, and employed frequency hopping frequency set of each physical channel and frequency hop sequences all can be inequality, that is: employed frequency hopping frequency set of each time slot and frequency hopping pattern all can be inequality.
Different frequency hopping frequency sets just can constitute different logic channels with different frequency hopping patterns, is used for sending different information, such as: some time slot adopts frequency hopping synchronizing frequency collection and frequency hopping synchronization pattern, and then these time slots have just constituted the frequency hopping synchronizing channel; Some time slot adopts frequency hopping communications frequency set and Traffic Channel frequency hopping pattern, and then they have just constituted Traffic Channel.
2.5 the frequency hopping mode under the cluster mode
For certain travelling carriage, whole communication process is divided into two stages: frequency hopping synchronous phase and proper communication stage.Under the situation of control channel frequency hopping, need from frequency hopping synchronizing channel or frequency hopping service channel, obtain hopping synchronization information.Travelling carriage obtain frequency hopping synchronously after, can enter normal course of communications.
2.5.1 frequency hopping is synchronous
The hopping scheme of frequency hopping synchronizing channel and frequency hopping service channel is: the frequency hopping frequency set adopts frequency hopping synchronizing frequency collection (comprising some to the uplink and downlink frequency), frequency hopping pattern to adopt the frequency hopping pattern of " sequential loop jumping ".
After the mobile platform started, if work in cluster mode, the cluster mode frequency hopping synchronizing frequency collection down that at first the calculates frequency hopping that circulates then, the control channel information of search reception base station according to this locality.After obtaining 3 or 5 frame frequency hopping synchronization frames,, obtain the hopping synchronization information of current base station according to the majority decision principle.After the acquisition, then follow the tracks of current base station always and carry out frequency hopping.Simultaneously, the base station will be in Common Control Channel frequency parameter, the synchronizing information of broadcast transmission adjacent base station, like this, travelling carriage has also just obtained frequency parameter, the synchronizing information of adjacent base station simultaneously.Thereby travelling carriage can be realized the monitoring to the channel quality of the frequency hopping synchronizing channel of adjacent base station.
2.5.2 handover
Travelling carriage is with when communicate by letter in base station 1, the frequency parameter and the hopping synchronization information such as TOD of reception 1 relevant adjacent base station that sends from the base station, after obtaining this information, by the mode of synchronous scanning (synchronous network) or slow scanning (asynchronous networking) judge the frequency hopping of adjacent base station watch the step channel signal strength signal intensity, this scanning can be carried out simultaneously with communicating by letter of Traffic Channel, carries out in the time of also can utilizing Traffic Channel idle;
Travelling carriage judges whether that according to a certain handover thresholding that sets in advance needs carry out handover then by judging the signal strength signal intensity from each adjacent base station, if need, then carries out following operation:
1) after handover is carried out in the travelling carriage decision, sends soft handover claim frame (identifier, the handoff request and the base station identifier that will switch, that is: the identifier of base station 2 that comprise base station 1), after receive base station 1, this request is sent to base station 2 to base station 1;
3) after base station 2 receives this request, judge whether that enough channel resources can be for utilizing;
4) if there are enough channel resources base station 2, then accept this handoff request, and distribute respective resources to give mobile radio station, simultaneously with this information informing base station 1;
5) base station 1 sends handover information (comprising the traffic channel information of distributing to travelling carriage) to travelling carriage;
6) after certain scheduled time of interval, travelling carriage is proceeded to communicate by letter by the Traffic Channel of base station 2 with base station 2.
It should be noted that in handover well behaved decision rule to be arranged to the setting of handoff threshold.
If need carry out direct-cut operation,, therefore, realize proper communication thereby can directly on the Common Control Channel of adjacent base station, initiate to insert request equally then because travelling carriage has obtained frequency parameter, the synchronizing information of adjacent base station by current base station.
2.5.3 the frequency hopping mode during proper communication
When the control channel frequency hopping, obtain the hopping synchronization information of base station at travelling carriage after, to on Common Control Channel, take place alternately of signalings such as the request of access, channel allocation, and then just can allow both sides on a certain Traffic Channel, carry out proper communication in the frequency hopping mode by both sides' Signalling exchange.
2.6 the frequency hopping mode under the direct mode operation
Under direct mode operation, principal and subordinate's working method is adopted in the communication between the travelling carriage.A side who at first makes a call is a main website, and the recipient is a slave station.Therefore, the synchronous needed TOD information of frequency hopping is sent by main website.
Whole communication process is divided into two stages: the synchronous and proper communication of frequency hopping.Below will describe respectively.
2.6.1 frequency hopping is synchronous
2.6.1.1 need not called call answering
In this stage, the frequency that main website concentrates with the frequency hopping synchronizing frequency according to the mode that circulation is jumped sends a certain predefined frame number continuously.
Slave station only otherwise in normal communication state, then it just concentrates optional frequency to be in the monitoring channel state from the frequency hopping synchronizing frequency, if receive certain frequency hopping synchronization frame, judges then whether this information is correct, as if correctly then separating jumping; If the frequency hopping synchronization frame that receives is incorrect, but incoming level (RSSI) surpasses a certain thresholding, noise really admits a fault, then the order according to the synchronizing frequency collection skips to next frequency reception next frame frequency hopping synchronization frame, follow main website simultaneously and carry out frequency hopping, if the selected a certain frequency of slave station does not receive effective frequency hopping synchronization frame in a certain scheduled time, then the other frequency of selective sequential receives again.
2.6.1.2 need called call answering
If the called call answering that carries out of information requirements in the frequency hopping synchronization frame of main website, then from stand in correctly receive hopping synchronization information after, send response message immediately to main website, after main website is received, send and reply confirmation.After both sides shake hands and finish, enter the proper communication stage.
2.6.1.3 master/slave station flow process
From time flow, the schematic flow sheet between the master/slave station as shown in Figure 9.As can be seen from the figure, if main website do not need the slave station call answering, then main website enters the proper communication stage after sending the frequency hopping synchronization frame of a certain predetermined frame number immediately; If main website needs the slave station call answering, then master and slave both sides just enter the proper communication stage after need replying and shaking hands.
2.6.2 the frequency hopping mode during proper communication
When the control channel frequency hopping, after travelling carriage obtained hopping synchronization information from another travelling carriage, both sides promptly can bring into use the random frequency hopping mode to carry out Signalling exchange and proper communication.
Adopt the present invention, digital clustering communication system can not only improve frequency efficiency, and the more important thing is, no matter at cluster mode still under direct mode operation, control channel and Traffic Channel have all realized frequency hopping, thereby can improve the antijamming capability of entire wireless communication system, therefore be particularly suitable for interference ratio than in serious environmental or the military communication environment.
3. concrete enforcement
The technology contents that the present invention relates to both can partly be implemented in the digital clustering communication system of reality, also can all implement.For example, only to the enforcement frequency hopping of the control channel under the cluster mode and to not implementing frequency-hopping method proposed by the invention under the direct mode operation.
In China, digital clustering communication system works in the 800MHz frequency range, and the uplink and downlink frequency interval is 45MHz.According to the regulation of State Radio Regulatory Commission, be spaced apart 25kHz between the adjacent frequency, therefore, available frequency can be divided into B/25kHz=N to (a pair of two frequencies, that is: the uplink and downlink frequency of comprising), wherein: B is the upstream or downstream total bandwidth.
Below, we are that example illustrates the specific embodiment of the present invention with the following parameters.
Equipment constitutes: zone controller, 4 base stations, a plurality of travelling carriage;
Wireless communication system has 200 pairs of frequencies, with frequency to according to from low to high mode number consecutively f
1, f
2.。。、f
200。
Zone controller (claiming Regional Control Center again), base station and travelling carriage are realized each functional module as shown in Figure 2 respectively, and according to the proposed method as can be known, the course of work of system is as follows:
1) under how base station asynchronous quadrature networking model, after the system start-up, Regional Control Center is after initialization finishes, by some frequency hopping mode of operations and parameter (as: the frequency hopping frequency quantity of direct mode operation and frequency hopping synchronizing band number of spots manually are set, the frequency hopping number of frequencies of cluster mode and frequency hopping synchronizing band number of spots etc.), calculate frequency hopping synchronizing frequency collection and frequency hopping communications frequency set according to method of the present invention then, after this to the relevant frequency hopping networking mode of base station transmits, frequency parameters such as frequency configuration mode, for example: Regional Control Center is chosen the frequency hopping synchronizing frequency collection of 5 frequencies as direct mode operation from 200 frequencies, and 15 frequencies are as the frequency hopping communications frequency set under the direct mode operation; 180 remaining frequencies are respectively allocated to 4 base stations, and each base station has 45 frequencies, and wherein: 5 frequencies are as frequency hopping synchronizing frequency collection; 40 frequencies are as the frequency hopping communications frequency set;
2) base station is obtaining frequency parameter or through after relevant parameter (single base station networking) artificially is set, is just working in frequency-hopping mode according to these parameters from Regional Control Center;
3) operating mobile station is when cluster mode, and the frequency that the frequency hopping synchronizing frequency under the cluster mode that the scan round this locality, back of starting shooting calculates is concentrated obtains hopping synchronization information, is obtaining the just frequency hopping synchronizing channel of moment tracking base stations of back;
4) operating mobile station if need to send, then sends hopping synchronization information at first continuously, and then enters normal communication state when direct mode operation; If receive, then 5 concentrated frequencies of the frequency hopping synchronizing frequency under the scan round direct mode operation obtain hopping synchronization information, after obtaining hopping synchronization information, can carry out proper communication with transmit leg.
4. operation principle
In digital clustering communication system, mainly contain two kinds of mode of operations: cluster mode and direct mode operation, the former is meant the mode of operation when having information infrastructure (as: zone controller, base station etc.), and it can be divided into single base station mode and many base station modes (at this moment, having zone controller) again; The latter is meant and does not have information infrastructure, the mode of operation when having only travelling carriage.Operating mobile station in cluster mode still be direct mode operation be that man-machine interface by travelling carriage is by manually being provided with.Under different mode of operations, solve the method difference of control channel frequency hopping.
Under the cluster mode of operation, when single base station networking is worked, the base station produces frequency hopping synchronizing frequency collection and frequency hopping communications frequency set according to certain algorithm, recycles the concentrated frequency of frequency hopping synchronizing frequency then and send hopping synchronization information on frequency hopping synchronizing channel and frequency hopping service channel; When many base station networkings are worked, zone controller produces frequency hopping synchronizing frequency collection and frequency hopping communications frequency set according to certain algorithm, then they together are dispensed to each base station in company with the frequency hopping running parameter, after this, the frequency hopping running parameter set according to zone controller of each base station recycles the frequency of distributing the frequency hopping synchronizing frequency that obtains to concentrate and send hopping synchronization information on frequency hopping synchronizing channel and frequency hopping service channel.And for each travelling carriage, it keeps the concordance list of all frequencies of whole system, when it works in cluster mode, after the start, it can go out frequency hopping synchronizing frequency collection according to certain algorithm computation, recycles the frequency scanning wireless channel in this frequency set then, up to receiving the hopping synchronization information of going to the station to meet somebody and sending, after this just can to obtain frequency hopping synchronous with the base station, and then communicate with it.
Under straight-through mode of operation, travelling carriage goes out local frequency hopping synchronizing frequency collection and frequency hopping communications frequency set according to certain algorithm computation.When accepting state, travelling carriage recycles the frequency scanning wireless channel that the frequency hopping synchronizing frequency is concentrated, if find to have travelling carriage to its transmission information, then from the frequency hopping synchronizing channel of transmit leg or frequency hopping service channel, obtain hopping synchronization information, communicate with it then; When transmit status, travelling carriage at first recycles the concentrated frequency of frequency hopping synchronizing frequency and send hopping synchronization information on the frequency hopping synchronizing channel, enter normal communication state then, simultaneously, still intermittent cyclic uses the frequency of frequency hopping synchronizing frequency collection to send hopping synchronization information on the frequency hopping service channel when normal communication state, to realize the slow networking function of frequency hopping.
Claims (11)
1. the digital cluster communication method with control channel frequency hopping function comprises cluster mode and direct mode operation, it is characterized in that
A. cluster mode comprises single base station networking and many base station networkings, when wherein single base station networking is worked, the base station produces frequency hopping synchronizing frequency collection and frequency hopping communications frequency set according to certain algorithm, recycles the concentrated frequency of frequency hopping synchronizing frequency then and send hopping synchronization information on frequency hopping synchronizing channel and frequency hopping service channel; When many base station networkings are worked, zone controller produces frequency hopping synchronizing frequency collection and frequency hopping communications frequency set according to certain algorithm, then they together are dispensed to each base station in company with the frequency hopping running parameter, the frequency hopping running parameter that each base station is set according to zone controller recycles and distributes the concentrated frequency of frequency hopping synchronizing frequency that obtains to send hopping synchronization information on frequency hopping synchronizing channel and frequency hopping service channel, for travelling carriage, comprise single base station networking or many base station networkings, each travelling carriage is all kept the concordance list of all frequencies of whole system, after the start, when working in cluster mode, go out frequency hopping synchronizing frequency collection according to certain algorithm computation, recycle the frequency scanning wireless channel in this frequency set then, up to receiving the hopping synchronization information that the base station sends, after this just obtain frequency hopping from the base station synchronous, and then communicate with it;
When B. leading directly to mode of operation, travelling carriage goes out local frequency hopping synchronizing frequency collection and frequency hopping communications frequency set according to certain algorithm computation, when accepting state, travelling carriage recycles the frequency scanning wireless channel that the frequency hopping synchronizing frequency is concentrated, if find to have travelling carriage to its transmission information, then from the frequency hopping synchronizing channel of transmit leg or frequency hopping service channel, obtain hopping synchronization information, communicate with it then; When transmit status, travelling carriage at first recycles the concentrated frequency of frequency hopping synchronizing frequency and send hopping synchronization information on the frequency hopping synchronizing channel, enter normal communication state then, simultaneously, still intermittent cyclic is used frequency hopping synchronizing frequency collection to send hopping synchronization information and send the slow networking of realization frequency hopping as duties information on the frequency hopping service channel when normal communication state.
2. the digital cluster communication method with control channel frequency hopping function as claimed in claim 1 is characterized in that described frequency hopping comprises the frequency hopping of control channel frequency hopping and Traffic Channel, adopts time division multiple access (TDMA) system, wherein, and the N of a carrier wave
TsIndividual time slot (N
Ts〉=4) constitute a frame air frame, N
SfThe frame air frame constitutes a frame superframe, a certain frame or a few frame are used for transmitting channel associated signalling in superframe, in each time slot, fill different information according to the difference of current logic channel, and in the frame superframe time of a carrier wave, transmission information is formed the complete frequency hopping synchronization frame of a frame.
3. the digital cluster communication method with control channel frequency hopping function as claimed in claim 1, it is characterized in that described frequency hopping adopts the time slot frequency hopping, the frequency hopping frequency set that each time slot adopted is different with frequency hopping pattern, different frequency hopping frequency sets constitutes different logic channels with different frequency hopping patterns, be used for sending different information, some time slot adopts frequency hopping synchronizing frequency collection and frequency hopping synchronization pattern, and these time slots have just constituted the frequency hopping synchronizing channel; Some time slot adopts frequency hopping communications frequency set and Traffic Channel frequency hopping pattern, has just constituted Traffic Channel.
4. the digital cluster communication method with control channel frequency hopping function as claimed in claim 1, the frequency hopping mode under the described cluster mode that it is characterized in that comprises the synchronous and proper communication of frequency hopping, wherein frequency hopping realizes by obtain hopping synchronization information from frequency hopping synchronizing channel or frequency hopping service channel synchronously, travelling carriage obtain frequency hopping synchronously after, enter normal course of communications.
5. as claim 1 or 4 described digital cluster communication methods, it is characterized in that described frequency hopping comprises synchronously with control channel frequency hopping function
A. the hopping scheme of frequency hopping synchronizing channel and frequency hopping service channel is: the frequency hopping frequency set adopts frequency hopping synchronizing frequency collection, comprises somely to the uplink and downlink frequency, and frequency hopping pattern adopts the frequency hopping pattern of " sequential loop jumping ";
B. after the mobile platform started, if work in cluster mode, the frequency hopping that circulates of the frequency hopping synchronizing frequency collection under the cluster mode that calculates according to this locality then, search receives the hopping synchronization information of base station, according to the majority decision principle, the hopping synchronization information of acquisition current base station is also followed the tracks of current base station and is carried out frequency hopping;
C. the base station will be in Common Control Channel frequency parameter, the synchronizing information of broadcast transmission adjacent base station, like this, travelling carriage has also just obtained frequency parameter, the synchronizing information of adjacent base station simultaneously.
6. as claim 1 or 4 described digital cluster communication methods, it is characterized in that also comprising handover, wherein with control channel frequency hopping function
A. travelling carriage is with when communicate by letter in base station 1, the TOD frequency parameter and the hopping synchronization information of reception 1 relevant adjacent base station that sends from the base station, after obtaining this information, judge the signal strength signal intensity of the frequency hopping synchronizing channel of adjacent base station by the mode of synchronous scanning (synchronous network) or slow scanning (asynchronous networking), this scanning is carried out simultaneously with communicating by letter of Traffic Channel, or utilizes Traffic Channel to carry out during the free time;
B. if operating mobile station in soft handoff mode, then travelling carriage judges whether that according to a certain handover thresholding that sets in advance needs carry out handover then by judging the signal strength signal intensity from each adjacent base station, if need, then carries out following operation:
1) after handover is carried out in the travelling carriage decision, send the soft handover claim frame to base station 1, comprise identifier, the handoff request of base station 1 and the base station identifier that will switch, that is: the identifier of base station 2 after receive base station 1, is sent to base station 2 with this request;
2) after base station 2 receives this request, judge whether that enough channel resources can be for utilizing;
3) if there are enough channel resources base station 2, then accept this handoff request, and distribute respective resources to give mobile radio station, simultaneously with this information informing base station 1;
4) base station 1 sends handover information to travelling carriage, and this information comprises the traffic channel information of distributing to travelling carriage;
5) after certain scheduled time of interval, travelling carriage is proceeded to communicate by letter by the Traffic Channel of base station 2 with base station 2;
C. if operating mobile station in the direct-cut operation pattern, then because travelling carriage has obtained the TOD frequency parameter and the hopping synchronization information of described adjacent base station by current base station, therefore, directly on the Common Control Channel of adjacent base station, initiate to insert request, thereby realize proper communication.
7. the digital cluster communication method with control channel frequency hopping function as claimed in claim 1 or 2, the frequency hopping mode under the described direct mode operation of it is characterized in that is meant that the communication between the travelling carriage adopts principal and subordinate's working method, a side who at first makes a call is a main website, the recipient is a slave station, the synchronous needed TOD information of frequency hopping is sent by main website, whole communication process is divided into frequency hopping synchronous phase and proper communication stage, and wherein frequency hopping comprises synchronously
A. main website sends a certain predefined frame number according to the mode of circulation jumping continuously with the concentrated frequency of frequency hopping synchronizing frequency;
B. slave station only otherwise in normal communication state, then it just concentrates optional frequency to be in the monitoring channel state from the frequency hopping synchronizing frequency, if receive certain frequency hopping synchronization frame, judges then whether this information is correct, as if correctly then separating jumping; If the frequency hopping synchronization frame that receives is incorrect, but incoming level (RSSI) surpasses a certain thresholding, noise really admits a fault, then the order according to the synchronizing frequency collection skips to next frequency reception next frame frequency hopping synchronization frame, follow main website simultaneously and carry out frequency hopping, if the selected a certain frequency of slave station does not receive effective frequency hopping synchronization frame in a certain scheduled time, then the other frequency of selective sequential receives again.
8. the digital cluster communication method with control channel frequency hopping function as claimed in claim 1, the asynchronous quadrature networking that it is characterized in that described cluster mode comprises the mode of taking frequency-division section networking, channeling, neighbor cell is distinguished by using different frequency hopping frequency set, is just distinguished by the mode of frequency quadrature; And therefore the different user in the same sub-district is distinguished by the frequency hop sequences of synchronized orthogonal owing to be synchronized with common base station.
9. the digital cluster communication method with control channel frequency hopping function as claimed in claim 1, the synchronized orthogonal networking that it is characterized in that described cluster mode comprises the mode of taking the whole network to use same frequency hopping frequency set, the channeling ratio is 1, and the frequency hopping frequency points of each sub-district is N, wherein
Fixedly setting up under the situation, the mode that the whole network adopts synchronously has two kinds: the whole network under wired mode is synchronous, by SDH mechanism; Big-dipper satellite time service by GPS or China is synchronous;
In base station motion or the base station is motor-driven sets up under the situation, the mode that the whole network adopts synchronously is that the time service of GPS or big-dipper satellite is synchronous;
Synchronous for frequency hopping, for the hopping control channel that guarantees each base station (sub-district) in the synchronized orthogonal net is a quadrature, the frequency hopping synchronizing frequency is concentrated and should be comprised 3 frequencies at least.
10. the digital cluster communication method with control channel frequency hopping function as claimed in claim 9 is characterized in that described frequency hopping is synchronous, for fast synchronously, improves the frequency hopping synchronizing speed, and the frequency points that the frequency hopping synchronizing frequency is concentrated is 3,5,7 or 12.
11. the digital cluster communication method with control channel frequency hopping function as claimed in claim 1, it is characterized in that the frequency hopping synchronizing frequency collection under the described cluster mode and the generation and the distribution of frequency hopping communications frequency set comprise when digital clustering communication system works in many base station modes, produce frequency hopping synchronizing frequency collection and frequency hopping communications frequency set by zone controller, notify each base station with frequency hopping synchronizing frequency collection and frequency hopping communications frequency set then; When digital clustering communication system works in single base station mode, produce required frequency hopping synchronizing frequency collection and frequency hopping communications frequency set by the base station; When travelling carriage is in the network-off direct-passing mode of operation, produce frequency hopping synchronizing frequency collection and frequency hopping communications frequency set by mobile radio station self.
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Families Citing this family (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9648493B2 (en) | 2007-11-16 | 2017-05-09 | Qualcomm Incorporated | Using identifiers to establish communication |
| CN101567719B (en) * | 2008-04-25 | 2012-10-03 | 天津赛乐新创通信技术有限公司 | Method for obtaining frequency hopping synchronization by using baseband decoding |
| CN101272563B (en) * | 2008-05-04 | 2014-12-10 | 中兴通讯股份有限公司 | Mobile terminal for establishing trunking communication and method for establishing trunking communication using the same |
| CN101282172B (en) * | 2008-06-04 | 2011-11-23 | 中国电子科技集团公司第三十研究所 | Method for automatically generating frequency library of shortwave frequency hopping |
| US9094880B2 (en) * | 2008-06-19 | 2015-07-28 | Qualcomm Incorporated | Access terminal assisted node identifier confusion resolution using a time gap |
| CN101394200B (en) * | 2008-11-11 | 2012-10-31 | 国网电力科学研究院 | A power line carrier data transmission method with zero frequency conversion and adaptive frequency selection |
| CN101552623B (en) * | 2009-04-23 | 2012-10-31 | 上海交通大学 | Realization Method of Chaotic Frequency Hopping Synchronization Based on GPS |
| CN101605006B (en) * | 2009-07-31 | 2012-11-28 | 中国电子科技集团公司第四十一研究所 | Device for testing deferred-network-entry synchronization time of frequency-hopping radio station |
| CN101626268B (en) * | 2009-08-12 | 2012-10-17 | 广州海格通信集团股份有限公司 | Realizing method for synchronizing high-speed frequency hopping of narrowband |
| CN101662733B (en) * | 2009-09-29 | 2013-03-27 | 中兴通讯股份有限公司 | Method of applying offline direct mode operation (DMO) and device thereof |
| CN101771439B (en) * | 2009-11-19 | 2014-05-14 | 海能达通信股份有限公司 | Cluster communication method and network side device |
| CN102149049B (en) * | 2010-02-08 | 2013-06-19 | 普天信息技术研究院有限公司 | Trunked service implementation method in digital trunking communication system and trunked user terminal |
| CN102065438A (en) * | 2010-12-22 | 2011-05-18 | 大唐移动通信设备有限公司 | Method and equipment for acquiring and networking frequency point sets |
| CN102209329B (en) * | 2011-05-17 | 2013-12-25 | 深圳国威电子有限公司 | Multi-base-station anti-jamming method based on cordless telephone system |
| CN103327601A (en) * | 2012-03-23 | 2013-09-25 | 普天信息技术研究院有限公司 | Method and system achieving broadband colony offline straight communication |
| WO2013160730A1 (en) * | 2012-04-26 | 2013-10-31 | Freescale Semiconductor, Inc. | A cut-through forwarding module and a method of receiving and transmitting data frames in a cut-through forwarding mode |
| US8838119B2 (en) | 2012-06-26 | 2014-09-16 | Futurewei Technologies, Inc. | Method and system for dynamic cell configuration |
| WO2014089750A1 (en) * | 2012-12-11 | 2014-06-19 | 华为技术有限公司 | Carrier allocation method, user equipment and base station |
| CN103813273B (en) * | 2013-12-23 | 2017-04-12 | 杭州承联通信技术有限公司 | PDT (programmable data terminal) digital trunked base station wireless link channel frequency allocation and access method |
| US9548918B2 (en) * | 2014-02-28 | 2017-01-17 | General Electric Company | Edge router systems and methods |
| CN104270169B (en) * | 2014-10-21 | 2016-08-10 | 中国航空无线电电子研究所 | One is applicable to aeronautical Ad hoc networks multi-channel adaptive frequency hopping processing method and system |
| CN106533498B (en) * | 2015-09-10 | 2021-08-13 | 中兴通讯股份有限公司 | Method and device for transmitting information |
| US9786155B2 (en) * | 2016-01-27 | 2017-10-10 | Honeywell International Inc. | Employing offsets to create multiple orthogonal channel sequences in frequency hopping systems |
| CN108072150A (en) * | 2016-11-14 | 2018-05-25 | 浙江盾安自控科技有限公司 | A kind of narrowband networking temperature control system and its network-building method |
| CN107453770B (en) * | 2017-08-22 | 2021-02-12 | 深圳市华信天线技术有限公司 | Frequency hopping control method, control device, transmitter and receiver |
| CN108366385B (en) * | 2018-02-07 | 2022-04-01 | 成都泰格微电子研究所有限责任公司 | Synchronous frequency hopping orthogonal networking method based on frequency point grouping |
| WO2020199069A1 (en) * | 2019-04-01 | 2020-10-08 | 华为技术有限公司 | Frequency hopping method and device for multi-hop network |
| CN110798418B (en) * | 2019-10-25 | 2022-06-17 | 中国人民解放军63921部队 | Communication signal automatic detection and monitoring method and device based on frequency domain threshold progressive segmentation |
| CN110932754A (en) * | 2019-11-20 | 2020-03-27 | 电子科技大学 | Frequency hopping sequence generation method suitable for clock asynchronous multi-antenna cognitive wireless network |
| CN111147090B (en) * | 2020-01-15 | 2021-11-05 | 湖北凯乐量子通信光电科技有限公司 | Intelligent ad hoc network communication system based on software radio |
| CN111384996B (en) * | 2020-02-18 | 2021-11-09 | 上海机电工程研究所 | Channel fading suppression method and system based on adaptive frequency hopping mechanism |
| CN112737633B (en) * | 2020-12-25 | 2022-03-15 | 河北远东通信系统工程有限公司 | Frequency hopping group call delayed adding method suitable for PDT/DMR |
| CN112752336A (en) * | 2020-12-29 | 2021-05-04 | 北京融讯信通科技有限公司 | Method and system for centralized synchronous common-frequency simulcasting |
| CN114845373B (en) * | 2021-02-02 | 2024-04-16 | 海能达通信股份有限公司 | Communication method, device and storage medium based on time division multiple access technology |
| CN114978236B (en) * | 2022-05-20 | 2024-05-14 | 湖南国科锐承电子科技有限公司 | TOD-based frequency hopping synchronization method |
| CN115118306B (en) * | 2022-06-27 | 2023-06-16 | 深圳友讯达科技股份有限公司 | Power Internet of things frequency hopping sequence pattern generation method and power Internet of things equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040081226A1 (en) * | 2002-10-15 | 2004-04-29 | Sung-Bok Park | Frequency hopping sequence generator |
| CN1719781A (en) * | 2005-07-08 | 2006-01-11 | 广州海格通信有限公司 | A method for TDMA time slot synchronization in Ad hoc network |
| US20060056492A1 (en) * | 2004-09-16 | 2006-03-16 | Oki Electric Industry Co., Ltd. | Wireless communication control method and wireless communication device |
| CN1798005A (en) * | 2004-12-22 | 2006-07-05 | 中兴通讯股份有限公司 | Method of same regional coverage in multiple subzones in TDS-CDMA system |
-
2007
- 2007-01-22 CN CNB2007100728983A patent/CN100464612C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040081226A1 (en) * | 2002-10-15 | 2004-04-29 | Sung-Bok Park | Frequency hopping sequence generator |
| US20060056492A1 (en) * | 2004-09-16 | 2006-03-16 | Oki Electric Industry Co., Ltd. | Wireless communication control method and wireless communication device |
| CN1798005A (en) * | 2004-12-22 | 2006-07-05 | 中兴通讯股份有限公司 | Method of same regional coverage in multiple subzones in TDS-CDMA system |
| CN1719781A (en) * | 2005-07-08 | 2006-01-11 | 广州海格通信有限公司 | A method for TDMA time slot synchronization in Ad hoc network |
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