CN105871494A - Synchronizing and simulcasting method and device for simulcasting base station - Google Patents
Synchronizing and simulcasting method and device for simulcasting base station Download PDFInfo
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- CN105871494A CN105871494A CN201610162240.0A CN201610162240A CN105871494A CN 105871494 A CN105871494 A CN 105871494A CN 201610162240 A CN201610162240 A CN 201610162240A CN 105871494 A CN105871494 A CN 105871494A
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- time slot
- value
- base station
- remainder
- broadcasting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0652—Synchronisation among time division multiple access [TDMA] nodes, e.g. time triggered protocol [TTP]
- H04J3/0655—Synchronisation among time division multiple access [TDMA] nodes, e.g. time triggered protocol [TTP] using timestamps
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1682—Allocation of channels according to the instantaneous demands of the users, e.g. concentrated multiplexers, statistical multiplexers
Abstract
The invention discloses a synchronizing and simulcasting method and device for a simulcasting base station. In the scheme, the simulcasting base station obtains the timestamp n of second pulse generated by a pre-set global positioning system GPS module; then, a remainder obtained by dividing n by 3 is calculated; if the remainder is 0, the value of a time slot counter is set to 0; if the remainder is 1, the value of the time slot counter is set to 96; if the remainder is 2, the value of the time slot counter is set to 192; furthermore, the value of the time slot counter is controlled to add 1 every 1/9600 s; when the value of the time slot counter is up to 287, ending of one time slot is determined; and furthermore, the value of the time slot counter is set to 0. Therefore, a 10 ms time slice in the prior art can also be used for forming one part of one time slot, such that the time slots in the simulcasting base station are continuous; in that way, the simulcasting base station can perform service processing by utilizing the two time slots; and thus, the utilization rate of time slot resources can be increased.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of with broadcast base station synchronization and with broadcast method,
Device.
Background technology
Common-frequency broadcasting system can be widely used for private network scheduling occasion, in the dedicated network system such as public security, fire-fighting
Voice broadcast service and dispatch control.It addition, safety can be realized in company and this system of enterprises case, protects
Interaction broadcast close, reliable i.e. commands work.This system is such as it is shown in figure 1, be built-in in a region
Vertical multiple with broadcasting base station, and utilize link station these to be coupled together with broadcasting base station, wherein, each with broadcasting base
Stand and be responsible for certain coverage.So, utilize multiple with broadcasting base station and link station just can realize on a large scale
With the purpose broadcasting covering.In common-frequency broadcasting system, terminal is sent to be referred to as upper industry with the data broadcasting base station
Business, is referred to as downlink business with broadcasting base station broadcast to the data of terminal.Such as, terminal is with the clothes broadcasting base station A
In business district, then uplink service can be sent to broadcasting base station A by terminal A, with broadcasting base station A by upper industry
Business is sent to link station, and what then this uplink service was sent to be connected with link station by link station same broadcasts base station
(such as, with broadcasting base station B and with broadcasting base station C), then with broadcasting base station B and with broadcasting base station C respectively to up
After service resolution, generate downlink business, and be sent to the terminal in respective service area, it is achieved thereby that will eventually
The Content of Communication of end A is broadcasted.
New digital common-frequency broadcasting system meets DMR (Digital Mobile Radio, digital mobile radio
Standard), standard uses frame structure (i.e. one TDMA (the time division of double time slot time division multiple access
Multiple access, time division multiple acess) frame includes that two time slots are for transmitting data).
In the prior art, based on DMR standard same broadcast base station, carry out time slot distribution according to following methods:
At 1 GPS (Global Positioning System, global positioning system) in the pulse per second (PPS) time, by 1
The time interval of second is divided into 33 time slots, so, the timeslice of 10 milliseconds can be remained after 1 second time is interior
Section.Thus result in and have 10 milliseconds of time slice fragments to cut off continuous print TDMA every 1 GPS second pulse
Double time slots of frame, so not meeting DMR standard on stricti jurise.But due to broadcasting what base station was serviced
The time slot that its distribution of terminal obtains is continuous print, there is not the time slice of 10 milliseconds.So, terminal
Time slot all meet DMR standard.The most necessarily result in the time slot of terminal and with the time slot broadcasting base station
Separate, need time slot and the same time slot broadcasting base station, the difficulty that when considerably increasing, base is safeguarded of maintenance terminal respectively
Degree and complexity.Existence as well as 10 milliseconds of time fragments so that during in tdma frame two
Gap is it is difficult to ensure that continuously and be completely independent, then this kind of common-frequency broadcasting system is also only capable of ensureing that a business is entered
OK.
From the foregoing, it will be observed that in prior art the time slot method of salary distribution result in time interval resource can not abundant Appropriate application,
The utilization rate in turn resulting in common-frequency broadcasting system is the highest.
Summary of the invention
Embodiments provide method, device that a kind of time slot distribution broadcasting together base station is broadcast the most together, in order to
Solve to presently, there are owing to causing the waste of time interval resource with broadcasting base station time slot unreasonable distribution, cause with frequency
The problem such as the utilization rate of simulcasting system is low.
Embodiments providing a kind of same synchronous method broadcasting base station, described method includes:
With broadcasting the timestamp n that base station obtains the pulse per second (PPS) of preset global position system GPS module generation；Described
N is the integer more than or equal to 0；
Calculate the n remainder divided by 3 gained；
If remainder is 0, then the value of time slot counter is set to 0；If remainder is 1, then by time slot counter
Value be set to 96；If remainder is 2, then the value of time slot counter is set to 192；
The value controlling time slot counter added 1 at interval of 1/9600 second；
When the value of time slot counter arrives 287, it is defined as the end of a time slot；And, time slot meter is set
The value of number device is 0.
Further, the embodiment of the present invention also provides for a kind of same same broadcasting method broadcasting base station, and described method includes:
The first of first terminal transmission is received with broadcasting the base station the first time slot at the first time division multiple acess tdma frame
Uplink service；Wherein, each tdma frame is made up of two adjacent time slots, between different tdma frames
Time slot the most overlapping；And, distribute time slot according to following methods: obtain preset global position system GPS mould
The timestamp n of the pulse per second (PPS) that block produces；Described n is the integer more than or equal to 0；Calculate n divided by 3 institutes
The remainder obtained；If remainder is 0, then the value of time slot counter is set to 0；If remainder is 1, then by time slot
The value of enumerator is set to 96；If remainder is 2, then the value of time slot counter is set to 192；During control
The value of gap enumerator added 1 at interval of 1/9600 second；When the value of time slot counter arrives 287, it is defined as one
The end of individual time slot；And, the value arranging time slot counter is 0；
First uplink service is sent to link station.
Further, the embodiment of the present invention additionally provides a kind of same synchronizer broadcasting base station, described device bag
Include:
Pulse per second (PPS) acquisition module, for obtaining the pulse per second (PPS) of preset global position system GPS module generation
Timestamp n；Described n is the integer more than or equal to 0；
Remainder computing module, for calculating the n remainder divided by 3 gained；
Module being set, if being 0 for remainder, then the value of time slot counter being set to 0；If remainder is 1,
Then the value of time slot counter is set to 96；If remainder is 2, then the value of time slot counter is set to 192；
Sequence control module, added 1 for controlling the value of time slot counter at interval of 1/9600 second；
Time slot determines module, for when the value of time slot counter arrives 287, is defined as the knot of a time slot
Bundle；And, the value arranging time slot counter is 0；
Further, the embodiment of the present invention additionally provides a kind of same same broadcasting device broadcasting base station, described device bag
Include:
First up task receiver module, receives for the first time slot at the first time division multiple acess tdma frame
The first uplink service that first terminal sends；Wherein, each tdma frame is made up of two adjacent time slots,
Time slot between different tdma frames is the most overlapping；And, according to following device distribute time slot: obtain preset entirely
The timestamp n of the pulse per second (PPS) that ball Positioning System GPS module produces；Described n is the integer more than or equal to 0；
Calculate the n remainder divided by 3 gained；If remainder is 0, then the value of time slot counter is set to 0；If it is remaining
Number is 1, then the value of time slot counter is set to 96；If remainder is 2, then the value of time slot counter is set
It is set to 192；The value controlling time slot counter added 1 at interval of 1/9600 second；When the value of time slot counter arrives
When 287, it is defined as the end of a time slot；And, the value arranging time slot counter is 0；
First sending module, for being sent to link station by the first uplink service.
The present invention has the beneficial effect that: in technical scheme described in the embodiment of the present invention, obtains owing to broadcasting base station together
Take the timestamp n of the pulse per second (PPS) that preset global position system GPS module produces；Described n is for being more than or equal to
The integer of 0；Afterwards, the n remainder divided by 3 gained is calculated；If remainder is 0, then by time slot counter
Value is set to 0；If remainder is 1, then the value of time slot counter is set to 96；If remainder is 2, then will
The value of time slot counter is set to 192；And the value controlling time slot counter added 1 at interval of 1/9600 second；When
When the value of time slot counter arrives 287, it is defined as the end of a time slot；And, time slot counter is set
Value is 0.In such manner, it is possible to make 10 milliseconds of time slices of the prior art be also used for constituting a time slot one
Part so that broadcasting the time slot in base station together is continuous print.Broadcasting base station so together can utilize the two time slot to enter
Row Business Processing, it is possible to increase the utilization rate of time interval resource, improves the utilization rate of common-frequency broadcasting system.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, institute in embodiment being described below
The accompanying drawing used is needed to briefly introduce, it should be apparent that, the accompanying drawing in describing below is only the present invention's
Some embodiments, from the point of view of those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 show the structural representation of common-frequency broadcasting system in prior art；
Fig. 2 show the schematic flow sheet described in the embodiment of the present invention one with the synchronous method broadcasting base station；
Fig. 3 show the schematic diagram synchronized described in the embodiment of the present invention one with the time base broadcasting in base station；
Fig. 4 show the schematic flow sheet described in the embodiment of the present invention two with the same broadcasting method broadcasting base station；
Fig. 5 show described in the embodiment of the present invention three with broadcast base station same broadcasting method schematic flow sheet it
One；
Fig. 6 show described in the embodiment of the present invention three with broadcast base station same broadcasting method schematic flow sheet it
Two；
Fig. 7 show described in the embodiment of the present invention four with broadcast base station same broadcasting method schematic flow sheet it
One；
Fig. 8 show described in the embodiment of the present invention four with broadcast base station same broadcasting method schematic flow sheet it
Two；
Fig. 9 show the structural representation described in the embodiment of the present invention five with the synchronous method broadcasting base station；
Figure 10 show the structural representation described in the embodiment of the present invention six with the same broadcasting method broadcasting base station.
Detailed description of the invention
Embodiments provide a kind of with broadcasting the synchronization of base station and with the method broadcast, device.In the present invention
In technical scheme described in embodiment, due to broadcasting base station acquisition preset global position system GPS module generation
The timestamp n of pulse per second (PPS)；Described n is the integer more than or equal to 0；Afterwards, n is calculated divided by 3 institutes
The remainder obtained；If remainder is 0, then the value of time slot counter is set to 0；If remainder is 1, then by time slot
The value of enumerator is set to 96；If remainder is 2, then the value of time slot counter is set to 192；And control
The value of time slot counter added 1 at interval of 1/9600 second；When the value of time slot counter arrives 287, it is defined as
The end of one time slot；And, the value arranging time slot counter is 0.In such manner, it is possible to make in prior art
10 milliseconds of time slices be also used for constituting a time slot part so that be even with broadcasting the time slot in base station
Continue.So the two time slot can be utilized to carry out corresponding service with broadcasting base station, relative in prior art not
2 time slots can be independently used to carry out two-way separate traffic forwarding, it is possible to increase the utilization rate of time interval resource,
Improve the utilization rate of common-frequency broadcasting system.Same the pulse per second (PPS) that station is followed and used GPS is broadcast due to different
Border is identical with timestamp information, therefore, each with broadcast base station by above method distribution time slot after, each
With broadcasting, to distribute time slot between station identical, thus each reaches slot synchronization with broadcasting station.
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to this
Bright it is described in further detail, it is clear that described embodiment is only a part of embodiment of the present invention,
Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out all other embodiments obtained under creative work premise, broadly fall into the scope of protection of the invention.
Embodiment one:
As in figure 2 it is shown, it is to illustrate with the flow process of the slot allocation method broadcasting base station in the embodiment of the present invention one
Figure, the method can comprise the following steps that
Step 201: with broadcasting the time that base station obtains the pulse per second (PPS) of preset global position system GPS module generation
Stamp n；Described n is the integer more than or equal to 0.
Step 202: calculate the n remainder divided by 3 gained.
Such as, if n is 0, n is 0 divided by the remainder of 3 gained；If n is 1, n is divided by more than 3 gained
Number is 1；If n is 2, n is 2 divided by the remainder of 3 gained；If n is 3, n is divided by the remainder of 3 gained
It is 0；If n is 4, n is 1 divided by the remainder of 3 gained, and the rest may be inferred.
Step 203: if remainder is 0, then the value of time slot counter is set to 0；If remainder is 1, then will
The value of time slot counter is set to 96；If remainder is 2, then the value of time slot counter is set to 192.
Step 204: the value controlling time slot counter added 1 at interval of 1/9600 second.
Step 205: when the value of time slot counter arrives 287, is defined as the end of a time slot；And,
The value arranging time slot counter is 0.
Wherein, the value of time slot counter arrives 287, then explanation epicycle counting process have passed through 30 milliseconds, then
Enough time slots are described.So, when the value of time slot counter arrives 287, when being defined as one
The end of gap；And the value arranging time slot counter is 0, represent the beginning of next time slot.
Wherein, in one embodiment, made with broadcasting base station by 10 by above-mentioned steps 201-step 205
Millisecond time slice is also used for constituting a time slot part, thus improves the utilization rate of time interval resource.But
So that each is capable of time slot mark in tdma frame number synchronization and each tdma frame with broadcasting base station
Number unification, and then when realizing, base synchronizes, in the embodiment of the present invention, it is also possible to including: if remainder is 0, then
Initial slot index is the first time slot；If remainder is 1, the most initial slot index is the second time slot；If
Remainder is 2, and the most initial slot index is the first time slot；First time slot and the second time slot alternating sign；With
And, with in self place common-frequency broadcasting system, other is Tong Bu with broadcasting the time division multiple acess tdma frame number of base station.
Wherein, the first time slot and the second time slot alternating sign refer to: when a time slot terminates, if this time slot is first
Gap, then next time slot is the second time slot；If this time slot is the second time slot, then when next time slot is first
Gap.Such as, if the first time slot be slot0, the second time slot be slot1；Then after a time slot terminates, should
If the time slot slot0 terminated, then next time slot is slot1.
Wherein, in one embodiment, a tdma frame includes two time slots (i.e. one the first time slot
With second time slot).Synchronize to realize tdma frame number, can determine according to below equation (1)
The initial value of tdma frame number, thus realize tdma frame number and synchronize；
Wherein, in formula (1), wherein, M represents the initial value of tdma frame number；M represents acquisition
The timestamp of first pulse per second (PPS)；T represents the repetition period duration of tdma frame number, and T is 60 millis
The integral multiple of second；[] represents rounding operation；MOD represents modulo operation.Wherein, such as,Value be
1, thenResult be 1.Wherein, it is also preferred that the left T was more than or equal to 15 seconds.
Here illustrating the method being realized frame number synchronization by formula (1), tdma frame number has weight
The multiple cycle, such as, during the repetition period when a length of 60 seconds, then tdma frame minima be 0, maximum
It is 999, and at interval of within 60 seconds, renumbeing (after i.e. tdma frame number reaches 999, next TDMA
Frame number is 0).So, it is only necessary to determine the initial value of a tdma frame number, just can realize different same
Broadcast the tdma frame number between base station to synchronize.
Certainly, it should be noted that the embodiment of the present invention can also use the method for prior art realize not
Synchronizing with the tdma frame number broadcast between base station, the embodiment of the present invention will not enumerate at this.
To sum up, same the border of pulse per second (PPS) and the timestamp information that station is followed and used GPS is broadcast due to different
Identical, therefore, each with broadcast base station by above method set up self time base after, each is internal with broadcasting station
During the TDMA run, base is identical, thus each with broadcasting base synchronization when station reaches.
Below, for ease of understanding, when explaining by diagram, base synchronizes, and such as, when being illustrated in figure 3, base synchronizes
Schematic diagram: in figure 3, activation marker is used for activating place with broadcasting base station, certainly, if with having broadcast base station
Activate then without activation marker.With broadcasting after base station receives the uplink activation frame signal that terminal sends, be given sharp
Live and indicate, prepare to activate with broadcasting station.Synchronization in Fig. 3 waits after referring to that broadcasting together base station receives activation marker, also
Do not obtain one period of waiting time before the pulse per second (PPS) of GPS.As can be seen from Figure 3, broadcasting base station A together is first
Individual when setting up the same of base broadcast base station, when timestamp is 0 (now remainder is 0), with broadcasting base station A time slot
The value of enumerator is set to 0；When timestamp is 1 (now remainder is 1), the value of time slot counter is arranged
It is 96；When timestamp is 2 (now remainder is 2), the value of time slot counter is set to 192.So,
In timestamp is 1 seconds represented by the pulse per second (PPS) of 0, its time slice of last 10 milliseconds, use
In first time slot counting the tdma frame that frame number is 17, by that analogy, 10 millis of later each second
The time slice of second all counts in corresponding time slot.Wherein, a time slot is properly termed as a slot, one
Tdma frame includes two slot, respectively slot0 and slot1.So, with broadcasting base station A always according to upper
State the initial value that formula (1) determines the tdma frame number of self, then open on the basis of the initial value determined
Begin to calculate tdma frame number, and generate tdma frame one by one.In like manner, remaining with broadcast base station according to
Base when identical method is set up respective, owing to the border of the pulse per second (PPS) with GPS is followed at different same stations of broadcasting
Identical with timestamp information, each after therefore above method synchronizes (comprises with the time base broadcasting station internal operation
Tdma frame number, boundary of time slot and slot label) inevitable identical, thus individual with broadcasting base synchronization when station reaches.
To sum up, in the embodiment of the present invention, 10 milliseconds of time slices are not wasted, with broadcasting in base station, and TDMA
Two time slots in frame are all continuous print, then the two time slot can be utilized to carry out corresponding industry with broadcasting base station
Business, carries out corresponding service relative to being only capable of 1 time slot of use in prior art, it is possible to increase time interval resource
Utilization rate, improve common-frequency broadcasting system utilization rate.
Embodiment two
Based on the same synchronous method broadcasting base station described in embodiment one, the embodiment of the present invention provides a kind of with broadcasting base
The same broadcasting method stood, as shown in Figure 4, this comprises the following steps with the schematic flow sheet of broadcasting method, the method:
Step 401: receive the first of first terminal transmission with broadcasting the base station the first time slot at the first tdma frame
Uplink service；Wherein, each tdma frame is made up of two adjacent time slots, between different tdma frames
Time slot the most overlapping；And, distribute time slot according to following methods: obtain preset global position system GPS mould
The timestamp n of the pulse per second (PPS) that block produces；Described n is the integer more than or equal to 0；Calculate n divided by 3 institutes
The remainder obtained；If remainder is 0, then the value of time slot counter is set to 0；If remainder is 1, then by time slot
The value of enumerator is set to 96；If remainder is 2, then the value of time slot counter is set to 192；During control
The value of gap enumerator added 1 at interval of 1/9600 second；When the value of time slot counter arrives 287, it is defined as one
The end of individual time slot；And, the value arranging time slot counter is 0.
Wherein, the concrete grammar of time slot distribution describes in detail in embodiment one, does not repeats them here.
Step 402: the first uplink service is sent to link station.
Wherein, in one embodiment, same base station of broadcasting is when receiving uplink service, in order to effectively profit
With time interval resource, in the embodiment of the present invention, two time slots of same tdma frame can be used for carrying two-way business.
So, in the embodiment of the present invention, the second terminal can be received at the second time slot of the first tdma frame and send
The second uplink service；Second uplink service is sent to link station.So, with broadcasting base station at a TDMA
First time slot of frame receives the first uplink service of first terminal, and the second time slot at the first tdma frame connects
Receive the second uplink service of the second terminal, complete two time slot carrying two-way business of same tdma frame.
So, the utilization rate of time interval resource it is effectively increased.
Wherein, in one embodiment, with when broadcasting the business of base station industry under treatment, following steps can be performed:
Step A1: receive the 3rd uplink service from third terminal of link station transmission and from the 4th
4th uplink service of terminal, wherein: the 3rd uplink service and the 4th uplink service for service third terminal with
And the 4th terminal same broadcast base station and receive concurrent at the first time slot of the second tdma frame and the second time slot respectively
Give link station.
Such as, with broadcasting the executive agent that base station A is step A1-step A3.Additionally, service third terminal
And the 4th terminal same broadcast base station for broadcasting base station B.Then with broadcasting base station B respectively at the second tdma frame
The first time slot and the second time slot receive the 3rd uplink service and the 4th uplink service, then with broadcasting base station B
3rd uplink service and the 4th uplink service are sent to link station.Link station by the 3rd uplink service and
4th uplink service is transmitted to broadcasting base station A.
Wherein, in one embodiment, the frame number of the second tdma frame and the frame number of the first tdma frame can
With identical can also be different, this is not limited by the embodiment of the present invention.
Step A2: resolve the 3rd uplink service, generates the first downlink business；And, to the 4th
Uplink service resolves, and generates the second downlink business.
Step A3: the first downlink business is sent to serviced end by the first time slot at the 3rd tdma frame
End；And, the second downlink business is sent to serviced terminal by the second time slot at the 3rd tdma frame.
Wherein, in one embodiment, it is transmitted to uplink service there is link with broadcasting base station due to link station
(the first uplink service is transmitted to broadcast base station B together by such as link station, starts to be forwarded to together from link station in time delay
Broadcasting base station B to receive and there is intervals between this first uplink service, this time interval is link
Time delay).Therefore, in the common-frequency broadcasting system shown in Fig. 1, if with broadcasting the terminal that base station A is serviced
Initiate uplink service, will be early than with broadcast base station B and with broadcasting with the time broadcasting base station A and receiving this uplink service
Base station C.So, it is ensured that the uplink service of terminal A forwards with broadcasting station up-downgoing at each simultaneously, it is necessary to
Consider link station and each is with broadcasting the link delay between base station, to realize forwarding service synchronization.Concrete,
In the embodiment of the present invention, the 3rd tdma frame in step A3 is link station after obtaining maximum link time delay,
Determining according to this maximum link time delay, wherein maximum link time delay is that information travels to this link from link station
Stand the same maximum duration broadcasting base station connected.Such as, according to following methods, link station can determine that maximum is prolonged
Time, and determining the 3rd tdma frame: link station obtains each the same link broadcasting base station being connected with link station
Time delay；Ask maximum link time delay divided by the remainder of 60 milliseconds of gained and business, if remainder is 0, it is determined that postpone
Number it is business+1, if remainder is not 0, it is determined that postpone number to be business+2；Then link station will receive on the 3rd
The frame number of the tdma frame of industry business and the 4th uplink service, will plus postponing number forwarding frame number obtained
The tdma frame corresponding with forwarding frame number is as the 3rd tdma frame.Such as, maximum link time delay is 50
Millisecond, then 50 milliseconds of remainders divided by 60 milliseconds of gained be 50 milliseconds, business be 0, then postpone number to be 0+2=2.
If the frame number of the tdma frame that link station receives the 3rd uplink service and the 4th uplink service is 6, then
(6+2) 8 (being forwarding frame number) are obtained, then using the tdma frame corresponding with forwarding frame number 8 as the 3rd
Tdma frame.
So, if the same base station of broadcasting issuing the first downlink business has multiple, then these multiple same base stations of broadcasting can be same
First downlink business is sent to serviced terminal by the first time slot of Shi tri-tdma frame；And,
Second downlink business is sent to serviced terminal by the second time slot of the 3rd tdma frame.So, it is achieved
Forwarding service synchronization.
It should be noted that the method that link station obtains link delay can determine according to prior art, this
This is not limited by bright embodiment.
To sum up, in the embodiment of the present invention, it is continuous print with two time slots in the tdma frame broadcasting base station,
Two-way business can be supported simultaneously, improve the utilization rate of time interval resource and the utilization rate of common-frequency broadcasting system.
Embodiment three
For ease of understanding, in the embodiment of the present invention as a example by the common-frequency broadcasting system shown in Fig. 1, same to be in
Terminal A of the service area broadcasting base station A sends uplink service, simultaneously with broadcast base station A, with broadcast base station B and
With broadcasting as a example by base station C sends downlink business simultaneously, the same broadcasting method in the embodiment of the present invention is illustrated,
As it is shown in figure 5, the schematic flow sheet of the method, the method comprises the following steps:
Assume initially that maximum link time delay is 60 milliseconds, then sending downlink business needs to extend a TDMA
Frame.Separately, in tdma frame, a time slot is designated as a slot.
Step 501: terminal A sends the first uplink service to broadcasting base station A at the slot 0 of TDMA 0.
Step 502: with broadcasting base station A slot 0 synchronization reception the first uplink service at TDMA 0, and
At the slot 1 of TDMA 0, first uplink service is sent to link station.
Step 503: link station receives the first uplink service.
Step 504: link be transmitted to broadcast base station A, with broadcast base station B and with broadcast base station C, and notify with
Broadcast base station A, with broadcasting base station B and starting to issue downlink business at TDMA 2 with broadcasting base station C.
Step 505: with broadcasting base station A, with broadcasting base station B and each receiving what link station sent with broadcasting base station C
First uplink service, and each the first uplink service is resolved, generate the first downlink business.
Step 506: with broadcasting base station A, with broadcasting base station B and with broadcasting base station C respectively at the slot0 of TDMA 2
First downlink business is sent to the terminal each serviced.
Such as, it is illustrated in figure 6 and includes the same broadcasting method schematic diagram of above-mentioned steps 501-step 506.At figure
In 6, terminal A sends business A.Without loss of generality, it is assumed here that business A is divided into into 4 frame compositions, respectively
It is business A, 0, business A, 1, business A, 2, business A, 3.T1 is with the link delay broadcasting base station B, t2
For the same link delay broadcasting base station C, t3 is with the link delay broadcasting base station A.For business A, 0, terminal
A is sent to broadcasting base station A at the slot0 of TDMA0, with broadcasting the base station A slot1 at TDMA0 by industry
Business A, 0 is sent to link station.Link station is simultaneously by business A, and 0 is transmitted to broadcasting base station A, with broadcasting base station B
With with broadcasting base station C, and notice these three sends business A with broadcasting base station at TDMA2 simultaneously, and 0 gives each
The terminal of service.For business A, 1, business A, 2 and business A, the processing method of 3 duplicates, at this no longer
Repeat.
To sum up, in the embodiment of the present invention, it is achieved by the business of terminal A by with broadcasting base station and link station broadcast
Go out.Owing to broadcasting between base station, the time slot of distribution is to synchronize, and does not has the timeslice of 10 milliseconds
Section, so, the utilization rate of time interval resource can be improved.
Embodiment four
For ease of understanding, in the embodiment of the present invention as a example by the common-frequency broadcasting system shown in Fig. 1, same to be in
Broadcast terminal A of the service area of base station A and terminal D send uplink service simultaneously, simultaneously with broadcast base station A,
With broadcasting base station B and with broadcasting as a example by base station C sends downlink business simultaneously, same in the embodiment of the present invention is broadcast
Method illustrates, as it is shown in fig. 7, the schematic flow sheet of the method, the method comprises the following steps:
Assume initially that maximum link time delay is 60 milliseconds, then sending downlink business needs to extend a TDMA
Frame.Separately, in tdma frame, a time slot is designated as a slot.
Step 701: terminal A sends the first uplink service to broadcasting base station A at the slot 0 of TDMA 0；
Terminal D sends the second uplink service to broadcasting base station A at the slot 1 of TDMA 0 simultaneously.
Step 702: with broadcasting base station A slot 0 synchronization reception the first uplink service at TDMA 0, and
The slot 1 of TDMA 0 synchronizes to receive the second uplink service.
Step 703: send the first uplink service to link station at the slot 1 of TDMA 0 with broadcasting base station A,
The second uplink service is sent to link station at the slot 0 of TDMA 1.
Step 704: link station receives the first uplink service and the second uplink service.
Step 705: link station the first uplink service and the second uplink service are transmitted to broadcast base station A, with
Broadcast base station B and with broadcasting base station C, and notify with broadcasting base station A, with broadcasting base station B and with broadcasting base station C at TDMA
2 start to issue downlink business.
Step 706: with broadcasting base station A, with broadcasting base station B and each receiving what link station sent with broadcasting base station C
First uplink service and the second uplink service, and each the first uplink service is resolved, generate first
Downlink business；Each the second uplink service is resolved, generate the second downlink business.
Step 707: with broadcasting base station A, with broadcasting base station B and with broadcasting base station C respectively at TDMA 2 frame
First downlink business is sent to the terminal each serviced by slot 0；And at the slot 1 just of TDMA 2 frame
Two downlink business are sent to the terminal each serviced.
Such as, as shown in Figure 8, it is the same broadcasting method schematic diagram including step 701-step 707.At Fig. 8
Middle business A1, business A2, business A3, business A4 are the uplink service that terminal A sends；Business
B1, business B2, business B3, business B4 are the uplink service that terminal D sends.Terminal A takies slot0
Time slot, terminal D takies slot1 time slot.T1 is that t2 is for broadcasting base station C with the link delay broadcasting base station B
Link delay, t3 is with broadcasting the link delay of base station A.At the slot0 of TDMA0, terminal A is by industry
Business A1 is sent to broadcasting base station A, and business B1 is sent to broadcasting base station A by terminal D simultaneously.With broadcasting base
Business A1 is sent to link station at the slot1 of TDMA0 by the A that stands, at the slot0 of TDMA1 by business
B1 is sent to link station.Business A1 and business B1 are transmitted to broadcasting base station A, with broadcasting base station by link station
B and with while broadcasting base station C, notice is with broadcasting base station A, with broadcasting base station B and with broadcasting base station C at TDMA2
Send downlink business.Then with broadcasting base station A, with broadcasting base station B and being respectively received business A1 with broadcasting base station C
After business B1, at the downlink business of the solt0 issuing service A1 of TDMA2, at the solt1 of TDMA2
The downlink business of issuing service B1.For business A2, business A3 and business A4 and business B2, industry
B3 is similar with the processing method of business B4 in business, does not repeats them here.With reference to Fig. 8, broadcast together under base station B general
Industry business (including the downlink business of terminal A and the downlink business of terminal D) is sent to serviced terminal B
And terminal D, with broadcasting base station C, downlink business is sent to serviced terminal C.As for terminal, receive
After downlink business, select which downlink business is resolved according to the needs of self.
In summary, the embodiment of the present invention, with realizing supporting two-way business simultaneously, improves the utilization of time interval resource
Rate, improves the utilization rate of common-frequency broadcasting system.
Embodiment five
Based on identical inventive concept, the embodiment of the present invention also provides for a kind of same synchronizer broadcasting base station, as
Shown in Fig. 9, for the structural representation of this device, including:
Pulse per second (PPS) acquisition module 901, for obtaining the pulse per second (PPS) that preset global position system GPS module produces
Timestamp n；Described n is the integer more than or equal to 0；
Remainder computing module 902, for calculating the n remainder divided by 3 gained；
Module 903 being set, if being 0 for remainder, then the value of time slot counter being set to 0；If remainder is
1, then the value of time slot counter is set to 96；If remainder is 2, then the value of time slot counter is set to
192；
Sequence control module 904, added 1 for controlling the value of time slot counter at interval of 1/9600 second；
Time slot determines module 905, when the value of time slot counter arrives 287, is defined as the knot of a time slot
Bundle；And, the value arranging time slot counter is 0.
Wherein, in one embodiment, this device also includes:
Time slot labeling module, if being 0 for remainder, the most initial slot index is the first time slot；If remainder
Being 1, the most initial slot index is the second time slot；If remainder is 2, the most initial slot index is first
Time slot；First time slot and the second time slot alternating sign；
Frame number synchronization module, is used for and other same time division multiple acess broadcasting base station in self place common-frequency broadcasting system
Tdma frame number synchronizes.
Wherein, in one embodiment, frame number synchronization module specifically for:
According to below equation, determine the initial value of tdma frame number；
Wherein, M represents the initial value of tdma frame number；M represents the time of first pulse per second (PPS) of acquisition
Stamp；T represents the repetition period duration of tdma frame number, and the integral multiple that T is 60 milliseconds；[] expression takes
Whole computing；MOD represents modulo operation.
Embodiment six
Based on identical inventive concept, the embodiment of the present invention also provides for a kind of same same broadcasting device broadcasting base station, as
Shown in Figure 10, for the structural representation of this device, including:
First up task receiver module 1001, for the first time slot at the first time division multiple acess tdma frame
Receive the first uplink service that first terminal sends；Wherein, each tdma frame is by two adjacent time slots
Constituting, the time slot between different tdma frames is the most overlapping；And, distribute time slot according to following device: obtain
The timestamp n of the pulse per second (PPS) that preset global position system GPS module produces；Described n is more than or equal to 0
Integer；Calculate the n remainder divided by 3 gained；If remainder is 0, then the value of time slot counter is set to
0；If remainder is 1, then the value of time slot counter is set to 96；If remainder is 2, then by time slot counter
Value be set to 192；The value controlling time slot counter added 1 at interval of 1/9600 second；When time slot counter
When value arrives 287, it is defined as the end of a time slot；And, the value arranging time slot counter is 0；
First sending module 1002, for being sent to link station by the first uplink service.
Wherein, in one embodiment, described device also includes:
Second uplink service receiver module, receives the second terminal for the second time slot at the first tdma frame
The second uplink service sent；
Second sending module, for being sent to link station by the second uplink service.
Wherein, in one embodiment, described device also includes:
Comprehensive uplink service receiver module, receives the 3rd uplink service from third terminal that link station sends
And the 4th uplink service from the 4th terminal, wherein: the 3rd uplink service and the 4th uplink service are clothes
Business third terminal and the same of the 4th terminal broadcast base station respectively at first time slot and second of the second tdma frame
Time slot receives and is sent to link station；
Downlink business generation module, for resolving the 3rd uplink service, generates the first downlink business；
And, the 4th uplink service is resolved, generates the second downlink business；
Downlink business sending module, sends out the first downlink business for the first time slot at the 3rd tdma frame
Give serviced terminal；And, the second downlink business is sent to by the second time slot at the 3rd tdma frame
The terminal serviced.
Wherein, in one embodiment, described 3rd tdma frame is that link station prolongs in acquisition maximum link
Shi Hou, determines according to this maximum link time delay, and wherein maximum link time delay is that information travels to from link station
The same maximum duration broadcasting base station that this link station is connected.
About the device in above-described embodiment, wherein modules performs the concrete mode of operation relevant
The embodiment of the method is described in detail, explanation will be not set forth in detail herein.
Those skilled in the art it should be appreciated that embodiments of the invention can be provided as method, device, system,
Or computer program.Therefore, the present invention can use complete hardware embodiment, complete software implementation,
Or combine the form of embodiment in terms of software and hardware.And, the present invention can use one or more its
In include the computer-usable storage medium of computer usable program code and (include but not limited to disk storage
Device, CD-ROM, optical memory etc.) form of the upper computer program implemented.
The present invention is with reference to method, device (device) and computer program according to embodiments of the present invention
Flow chart and/or block diagram describe.It should be understood that can by computer program instructions flowchart and/or
Flow process in each flow process in block diagram and/or square frame and flow chart and/or block diagram and/or square frame
In conjunction with.These computer program instructions can be provided to general purpose computer, special-purpose computer, Embedded Processor
Or the processor of other programmable data processing meanss is to produce a machine so that by computer or other
The instruction that the processor of programmable data processing means performs produce for realizing in one flow process of flow chart or
The device of the function specified in multiple flow processs and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and computer or other programmable datas can be guided to process dress
Put in the computer-readable memory worked in a specific way so that be stored in this computer-readable memory
Instruction produce and include the manufacture of command device, this command device realizes in one flow process or multiple of flow chart
The function specified in flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing meanss, makes
Obtain and perform sequence of operations step on the computer or other programmable apparatus to produce computer implemented place
Reason, thus the instruction performed on the computer or other programmable apparatus provides for realizing flow chart one
The step of the function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know base
This creativeness concept, then can make other change and amendment to these embodiments.So, appended right is wanted
Ask and be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (14)
1. the same synchronous method broadcasting base station, it is characterised in that described method includes:
With broadcasting the timestamp n that base station obtains the pulse per second (PPS) of preset global position system GPS module generation；Described
N is the integer more than or equal to 0；
Calculate the n remainder divided by 3 gained；
If remainder is 0, then the value of time slot counter is set to 0；If remainder is 1, then by time slot counter
Value be set to 96；If remainder is 2, then the value of time slot counter is set to 192；
The value controlling time slot counter added 1 at interval of 1/9600 second；
When the value of time slot counter arrives 287, it is defined as the end of a time slot；And, time slot meter is set
The value of number device is 0.
Method the most according to claim 1, it is characterised in that described method also includes:
If remainder is 0, the most initial slot index is the first time slot；
If remainder is 1, the most initial slot index is the second time slot；
If remainder is 2, the most initial slot index is the first time slot；
First time slot and the second time slot alternating sign；And,
With in self place common-frequency broadcasting system, other is Tong Bu with broadcasting the time division multiple acess tdma frame number of base station.
Method the most according to claim 2, it is characterised in that described and self place common-frequency simulcasting
In system, other synchronizes with the tdma frame number broadcasting base station, specifically includes:
According to below equation, determine the initial value of tdma frame number；
Wherein, M represents the initial value of tdma frame number；M represents the timestamp of the pulse per second (PPS) of acquisition；T table
Show the repetition period duration of tdma frame number, and the integral multiple that T is 60 milliseconds；[] represents rounding operation；
MOD represents modulo operation.
4. the same same broadcasting method broadcasting base station, it is characterised in that described method includes:
The first of first terminal transmission is received with broadcasting the base station the first time slot at the first time division multiple acess tdma frame
Uplink service；Wherein, each tdma frame is made up of two adjacent time slots, between different tdma frames
Time slot the most overlapping；And, distribute time slot according to following methods: obtain preset global position system GPS mould
The timestamp n of the pulse per second (PPS) that block produces；Described n is the integer more than or equal to 0；Calculate n divided by 3 institutes
The remainder obtained；If remainder is 0, then the value of time slot counter is set to 0；If remainder is 1, then by time slot
The value of enumerator is set to 96；If remainder is 2, then the value of time slot counter is set to 192；During control
The value of gap enumerator added 1 at interval of 1/9600 second；When the value of time slot counter arrives 287, it is defined as one
The end of individual time slot；And, the value arranging time slot counter is 0；
First uplink service is sent to link station.
Method the most according to claim 4, it is characterised in that described method also includes:
The second time slot at the first tdma frame receives the second uplink service that the second terminal sends；
Second uplink service is sent to link station.
6. according to the method described in claim 4 or 5, it is characterised in that described method also includes:
Receive the 3rd uplink service from third terminal that link station sends and from the of the 4th terminal
Four uplink services, wherein: the 3rd uplink service and the 4th uplink service are for service third terminal and the 4th eventually
The same of end broadcasts base station respectively after the first time slot of the second tdma frame and the second time slot receive, and is sent to chain
Way station；
3rd uplink service is resolved, generates the first downlink business；And, the 4th uplink service is entered
Row resolves, and generates the second downlink business；
First downlink business is sent to serviced terminal by the first time slot at the 3rd tdma frame；And,
Second downlink business is sent to serviced terminal by the second time slot at the 3rd tdma frame.
Method the most according to claim 6, it is characterised in that described 3rd tdma frame is link
After standing in acquisition maximum link time delay, determining according to this maximum link time delay, wherein maximum link time delay is
Information travels to, from link station, the same maximum duration broadcasting base station that this link station is connected.
8. the same synchronizer broadcasting base station, it is characterised in that described device includes:
Pulse per second (PPS) acquisition module, for obtaining the pulse per second (PPS) of preset global position system GPS module generation
Timestamp n；Described n is the integer more than or equal to 0；
Remainder computing module, for calculating the n remainder divided by 3 gained；
Module being set, if being 0 for remainder, then the value of time slot counter being set to 0；If remainder is 1,
Then the value of time slot counter is set to 96；If remainder is 2, then the value of time slot counter is set to 192；
Sequence control module, added 1 for controlling the value of time slot counter at interval of 1/9600 second；
Time slot determines module, for when the value of time slot counter arrives 287, is defined as the knot of a time slot
Bundle；And, the value arranging time slot counter is 0.
Device the most according to claim 8, it is characterised in that described device also includes:
Time slot labeling module, if being 0 for remainder, the most initial slot index is the first time slot；If remainder
Being 1, the most initial slot index is the second time slot；If remainder is 2, the most initial slot index is first
Time slot；First time slot and the second time slot alternating sign；
Frame number synchronization module, is used for and other same time division multiple acess broadcasting base station in self place common-frequency broadcasting system
Tdma frame number synchronizes.
Device the most according to claim 9, it is characterised in that described frame number synchronization module is specifically used
In:
For according to below equation, determining the initial value of tdma frame number；
Wherein, M represents the initial value of tdma frame number；M represents the timestamp of the pulse per second (PPS) of acquisition；T table
Show the repetition period duration of tdma frame number, and the integral multiple that T is 60 milliseconds；[] represents rounding operation；
MOD represents modulo operation.
11. 1 kinds with the same broadcasting device broadcasting base station, it is characterised in that described device includes:
First up task receiver module, receives for the first time slot at the first time division multiple acess tdma frame
The first uplink service that first terminal sends；Wherein, each tdma frame is made up of two adjacent time slots,
Time slot between different tdma frames is the most overlapping；And, according to following methods distribute time slot: obtain preset entirely
The timestamp n of the pulse per second (PPS) that ball Positioning System GPS module produces；Described n is the integer more than or equal to 0；
Calculate the n remainder divided by 3 gained；If remainder is 0, then the value of time slot counter is set to 0；If it is remaining
Number is 1, then the value of time slot counter is set to 96；If remainder is 2, then the value of time slot counter is set
It is set to 192；The value controlling time slot counter added 1 at interval of 1/9600 second；When the value of time slot counter arrives
When 287, it is defined as the end of a time slot；And, the value arranging time slot counter is 0；
First sending module, for being sent to link station by the first uplink service.
12. devices according to claim 11, it is characterised in that described device also includes:
Second uplink service receiver module, receives the second terminal for the second time slot at the first tdma frame
The second uplink service sent；
Second sending module, for being sent to link station by the second uplink service.
13. according to the device described in claim 11 or 12, it is characterised in that described device also includes:
Comprehensive uplink service receiver module, receives the 3rd uplink service from third terminal that link station sends
And the 4th uplink service from the 4th terminal, wherein: the 3rd uplink service and the 4th uplink service are clothes
Business third terminal and the same of the 4th terminal broadcast base station respectively at first time slot and second of the second tdma frame
After time slot receives, it is sent to link station；
Downlink business generation module, for resolving the 3rd uplink service, generates the first downlink business；
And, the 4th uplink service is resolved, generates the second downlink business；
Downlink business sending module, sends out the first downlink business for the first time slot at the 3rd tdma frame
Give serviced terminal；And, the second downlink business is sent to by the second time slot at the 3rd tdma frame
The terminal serviced.
14. devices according to claim 13, it is characterised in that described 3rd tdma frame is chain
Way station, after obtaining maximum link time delay, determines according to this maximum link time delay, wherein maximum link time delay
Travel to, from link station, the same maximum duration broadcasting base station that this link station is connected by information.
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