CN103516453B - Multi-slot frame structure adopting time division multiple access mode and application thereof - Google Patents
Multi-slot frame structure adopting time division multiple access mode and application thereof Download PDFInfo
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Abstract
The invention relates to a multi-slot frame structure adopting a time division multiple access mode and a communication method based on the frame structure. The multi-slot frame structure adopting a time division multiple access mode comprises a starting time slot located at a frame head and at least one regular service time slot. The regular service time slots include a downlink time slot group and an uplink time slot group, the junction of the downlink time slot group and the uplink time slot group is a transmitting/receiving conversion point, and the frame structure has one transmitting/receiving conversion point. The beneficial effect is that the technical scheme of the invention provides a solution for the technical problems of an existing narrowband digital wireless communication system such as low transmission efficiency, large data delay, complex signaling and service data transmission scheme and the like.
Description
Technical field
The present invention relates to a kind of frame structure, more particularly, it relates to a kind of multi-slot of employing time division multiple acess access module
Frame structure, and the communication means based on described frame structure.
Background technology
At present, various wireless communication technologys quickly grow, and band resource is more and more nervous.Traditional intercom,
Trunking communication adopts analog system, a pair of frequency spectrums to carry a speech business, and efficiency of transmission is low, and confidentiality is poor.
In order to overcome the shortcoming of traditional analog intercom system, at present American-European multiple countries have been proposed for various narrow-band digitals
Communication plan, gradually replaces original simulation intercom system.And China is in terms of digital intercom communication standard and technical research, phase
To delayed, lack competitive scheme and technology.
Existing narrow-band digital intercommunication standard criterion frame, by ETSI（ETSI：European
Telecommunications Standards Institute）The DMR of proposition（Digital mobile radio is communicated：Digital
Mobile Radio）Standard is a comparatively ripe standard, great Qu networkings is supported, using the carrier wave width of 12.5KHz
Degree, frame length 60ms.As shown in figure 1, a frame includes 2 time slots, 2 tunnel voice communications, the relatively conventional simulation intercommunication of capacity can be supported
System improving one times.
For DMR systems, voice transfer is by the way of superframe.As shown in Fig. 26 radio frames constitute a superframe,
In each frame, synchronizing sequence or control signaling can be embedded in, be controlled for receiving device synchronous detecting and link.
Above-mentioned digital intercom technology, although have very big improvement than analog systemss, but in channel capacity, transmission effect
Rate and time delay aspect, improved aspect still in need.
Chinese patent application 200610157418.9 discloses communication means and its device in a kind of TDD mode,
The method includes：Transmission RACH, the RACH away from descending/up protection time slot, in specified upstream
Transmit on the band segment of gap, and the RACH can extend to neighboring upstream time slot, form extension and access channel；Under
Row/up protection time slot can extend to adjacent time slot, form expanded downstream/up protection time slot.
Chinese patent ZL 200510076922.1 discloses a kind of communication means of time division duplex mobile communication system, bag
Include：（1）The least unit and system frame structure of Transmission Time Interval TTI are set, when each wireless sub-frame is by several business
Gap and the special time slot comprising at least two translation and protection time slots are constituted, and TTI is in units of some business time-slots；（2）Send
Holding will need the data for sending according to step（1）The frame structure of setting encoded, modulate after sent by radio frequency；（3）Receive
End receiving data first demodulate, then according to step（1）Corresponding data are obtained after the frame structure decoding of setting, subsequently according to step
（1）The TTI of setting is returned and is received response message, so that transmitting terminal sends next data, and then completes data transfer.Special time slot
UpPTS and DwPTS time slot can also be included, or also includes a DwPTS time slot.
Technical scheme disclosed in above-mentioned two patent documentations difference, although improve existing digital intercom skill in degree together
The channel capacity of art, efficiency of transmission and time delay aspect, but from from its frame structure, there is the more complicated deficiency of structure, channel holds
Amount, efficiency of transmission, data delay are still not ideal enough.As the expansion type of data traffic requirement develops, it has been difficult to meet development
Demand, there is larger room for improvement.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided compared with prior art, channel capacity has one kind
Further lifted, signalling is simple, communication delay is little, system flexibly adopts time division multiple acess access module to broadband evolution
Multi-slot frame structure, and provide based on described frame structure communication means.
Technical scheme is as follows：
A kind of frame structure of the multi-slot of employing time division multiple acess access module, including the starting time slots positioned at frame head, and
More than one conversational traffic time slot；Described conversational traffic time slot includes descending time slot group and ascending time slot group, descending time slot group
Intersection with ascending time slot group is transmitting-receiving transfer point, and the transmitting-receiving transfer point described in frame structure is one.
Preferably, described starting time slots are shorter than conversational traffic time slot.
Preferably, described starting time slots be configured to it is descending, for bearing system broadcast message or control signaling.
Preferably, being provided with protection time slot in the position of described transmitting-receiving transfer point, the radio frequency for communication equipment is complete
Conversion is sent into receiving, and offsets the spatial transmission time delay between communication equipment.
Preferably, the afterbody of each ascending time slot of described ascending time slot group is configured with protection symbol.
Preferably, the protection symbol equal length of each ascending time slot.
Preferably, described starting time slots, conversational traffic time slot include 2 pilots, 3 data segments；Time slot is tied
The composition of structure is followed successively by：First data segment, the first pilot, the second data segment, the second pilot, the 3rd data segment；Described
Pilot carries pilot frequency sequence；Described data segment is used for carrier signaling, voice or data message.
Preferably, the first data segment, the second data segment, the equal length of the 3rd data segment, the first pilot, second are led
The equal length of frequency range.
Preferably, the descending time slot of descending time slot group is corresponded with the ascending time slot of ascending time slot group.
Preferably, described descending time slot group includes 3 descending time slots, ascending time slot group includes 3 ascending time slots.
A kind of communication means of the frame structure of the multi-slot based on using time division multiple acess access module, signaling channel and data
Traffic Channel adopts time division multiplexing；
Step is as follows：
1）Base station equipment sends broadcast message or descending control signaling, in described broadcast message or descending control signaling,
Comprising channel busy indication bit, for indicating the busy-idle condition of each time slot；
2）Mobile station listening broadcast information or descending control signaling, obtain channel busy information；
3）Mobile station is obtained after idle channel configured information, on the corresponding ascending time slot of idle channel, is initiated to access and is asked
Ask；
4）Believe in the response with reception base station equipment on the descending time slot corresponding to the ascending time slot for selecting to access request
Order, link establishment；
5）In the enterprising industry business transmitting-receiving of channel for selecting.
Preferably, step 1）Specially：
1.1）Mobile station has service request；
1.2）Access enumerator to set to 0, start intervalometer；
1.3）Base station equipment sends broadcast message or descending control signaling on starting time slots.
Preferably, step 2）Specially：
2.1）Monitor base station equipment sends on starting time slots broadcast message or descending control signaling；
2.2）Idle channel is determined whether, if it has, carrying out step 3）；If it is not, then judge whether intervalometer is overtime,
If intervalometer has not timed out, repeat step 2.1）If timer expiry, access failure terminates this access attempts.
Preferably, step 4）Specially：
4.1）With select ascending time slot corresponding to descending time slot on monitor descending control signaling；
4.2）Judge whether the link establishment order for receiving base station equipment transmission, if it is, link establishment, and walked
Rapid 5）；If not, enumerator adds 1, and it is compared with default maximum allowable Stochastic accessing number of attempt；If enumerator
Equal to or more than maximum allowable Stochastic accessing number of attempt, then access failure, terminates this access attempts；If enumerator is little
In maximum allowable Stochastic accessing number of attempt, then judge whether intervalometer is overtime, if intervalometer has not timed out, repeat step
2.1）If timer expiry, access failure terminates this access attempts.
Preferably, step 4）Described link establishment order includes channel configuration instruction, indicates the down channel of configuration
And up channel.
A kind of communication means of the frame structure of the multi-slot based on using time division multiple acess access module, configuration is based on when adopting
Divide a pair of ascending time slots, the descending time slot of the frame structure of the multi-slot of multiple access access module as carrying uplink and downlink control
The uplink signalling channel of signaling, downlink signaling channel, described method and step is as follows：
1）Mobile Origination is accessed, and transmission link sets up request；
2）Mobile station receives the request for building link response of base station equipment transmission on downlink signaling channel；
3）Downlink signaling channel, the enterprising industry business transmitting-receiving of uplink signalling channel of configuration are responded in request for building link.
Preferably, step 1）Specially：
1.1）Mobile station has service request；
1.2）Access enumerator to set to 0；
1.3）Transmission link sets up request on uplink signalling channel.
Preferably, step 2）Specially：
2.1）Monitor the descending control signaling on downlink signaling channel；
2.2）Judge whether the request for building link response for receiving base station equipment transmission, if it is, link establishment, is carried out
Step 3）；If not, enumerator adds 1, and it is compared with default maximum allowable Stochastic accessing number of attempt；If counted
Device is equal to or more than maximum allowable Stochastic accessing number of attempt, then access failure, terminates this access attempts；If enumerator
Less than maximum allowable Stochastic accessing number of attempt, then the fallback value of backoff timer is randomly choosed, and it is super in backoff timer
Shi Hou, repeat step 1.3）.
Preferably, step 3）Specially：Base station equipment indicates channel configuration in link request response message is set up, and moves
The channel configuration that dynamic platform is indicated according to base station equipment in link request response message is set up, goes to the channel of channel configuration instruction
Enterprising industry business transmitting-receiving.
A kind of info class sent on the detection channel of the frame structure of the multi-slot based on using time division multiple acess access module
The method of type, configuration：Data segment sends information type when being business datum, and the phase place of the first pilot is first phase, and second
The phase place of pilot is second phase；When data segment transmission information type is control signaling, the phase place of the first pilot is the 3rd
Phase place, the phase place of the second pilot is the 4th phase place.
Described method is specific as follows：
Receiving device detection the 3rd pilot, the 4th pilot that receive, described the 3rd pilot and the first pilot tone
Section correspondence, the phase place of the 3rd pilot is the 5th phase place, and the 4th pilot is corresponding with the second pilot, the phase place of the 4th pilot
For the 6th phase place；
If the 5th phase place is equal with first phase, while the 6th phase place is equal with second phase, then the first data segment,
What two data segments, the 3rd data segment were carried is business datum；
If the 5th phase place is equal with third phase, while the 6th phase place is equal with the 4th phase place, then the first data segment,
What two data segments, the 3rd data segment were carried is control signaling.
Preferably, described method, further includes：If the 5th phase place and first phase, while the 6th phase
Position and second phase；Meanwhile, if the 5th phase place and third phase, while the 6th phase place and the 4th phase place,
Mistake is then detected, the business datum for receiving is abandoned.
Preferably, described first phase is equal with the 4th phase place, second phase is equal with third phase.
Preferably, described method is that the pilot on each time slot is detected.
Preferably, described business datum is voice, circuit data or grouped data.
Beneficial effects of the present invention are as follows：
The present invention proposes a kind of frame structure and transmission mode, and using time division multiple acess access module, a frame includes multiple
Business time-slot and a time slot, for carrying data, voice or signaling.
Business time-slot can as needed be configured to upstream or downstream, there is protection time slot between up-downgoing transfer point.For
Each business time-slot, is embedded in two pilot frequency sequences, for recipient's synchronous detecting, data demodulation phase adjustment.For each
Time slot, by two pilot frequency sequence phase place changes, indicates the information type that current time slots are carried.
For whether configuring special time interval resource come carrier signaling channel, system can support normal mode and mode of extension
Two kinds of transmission modes.For normal mode, signaling channel does not have special time slot to carry, and needs and business datum time division multiplex letter
Road resource, when accessing, mobile station listening broadcast or down control channel indicate to select idle channel by channel busy
Accessed；For mode of extension, system can configure special uplink and downlink timeslot to carry up-downgoing control signaling, access
When, mobile station carries out Stochastic accessing on dedicated signaling time slot, and on the special signalling time slot descending control signaling is received.
Technical solutions according to the invention solve existing narrow-band digital wireless communication system, and efficiency of transmission is low, data delay
Greatly, the technical problem such as signaling and business data transmission scheme complexity.
Description of the drawings
Fig. 1 is the frame structure schematic diagram of existing narrow-band digital intercommunication standard criterion frame；
Fig. 2 is that DMR systems are used for the structural representation that voice transfer adopts superframe；
Fig. 3 is the structural representation of one embodiment of frame of the present invention；
Fig. 4 is structural representation of the frame of the present invention when protecting symbol to be 0；
Fig. 5 is the structural representation of the time slot of frame of the present invention；
Fig. 6 is a kind of flow chart of communication means of the present invention；
Fig. 7 is the detailed step flow chart of flow process shown in Fig. 6；
Fig. 8 is the flow chart of another kind of communication means of the present invention；
Fig. 9 is the detailed step flow chart of flow process shown in Fig. 8；
Figure 10 is the flow chart of the method for the information type sent on detection channel of the present invention；
In figure：GP is protection time slot, and D1 is the first data segment, and D2 is the second data segment, and D3 is the 3rd data segment, and P1 is the
One pilot, P2 is the second pilot, and GP4 is the 4th protection symbol, and GP5 is the 5th protection symbol, and GP6 is the 6th protection character
Number.
Specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
As shown in figure 3, a kind of frame structure of multi-slot, using time division multiple acess access module.One radio frames includes one
Gap and 6 regular time slots in short-term.Between adjacent sending time slots and reception time slot（Receive and dispatch at transfer point）, leave a length
For the protection time slot GP of TGP, the radio frequency for communication equipment completes to receive/send conversion and offset the space between communication equipment to pass
Sowing time prolongs.Frame of the present invention, only one of which transmitting-receiving transfer point in a radio frames.
Time slot 0 is the starting time slots in a radio frames, and positioned at the frame head of radio frames, fixed configurations are descending, main use
In the system broadcast information or control signaling that carry the transmission of the first communication equipment.6 conversational traffic time slots after time slot 0, respectively
Time slot 1 is defined as to time slot 6, for carrying voice, data or signaling.For each regular time slots, can be configured to transmission or connect
Receive.In the present embodiment, time slot 1,2,3 is configured to descending, time slot 4,5,6 is configured to up.
In order to reach more excellent effect, in the afterbody of each ascending time slot, can also configure length and be respectively TGPnProtection character
Number（N is ascending time slot numbering）.
Alternatively, T is worked asGPnWhen being disposed as 0 symbol lengths, frame structure is shown in Fig. 4, in frame structure
Then only protection time slot GP, the afterbody of each ascending time slot then unprotect symbol.
Generalized slot structure as shown in Figure 5, each time slot includes 2 pilots and 3 data segments, structure of time slot
Composition is followed successively by：First data segment D1, the first pilot P1, the second data segment D2, the second pilot P2, the 3rd data segment D3.
Pilot carries pilot frequency sequence, for recipient's detection to be synchronous, assistance data demodulation, enters line phase, frequency deviation adjustment etc., for leading
Frequency sequence, recipient can be used for assistance data demodulation, can also be not used in assistance data demodulation.Data segment is used for carrier signaling, language
Sound or data message.
In the present embodiment, for described frame structure, one is wireless frame length is T ms, including N number of symbol.Each when
The sign digit S that gap includesn, wherein n is time-gap number.
Then for each time slot, the length of the first pilot P1 and the second pilot P2 is NPIndividual symbol, the first data
Section D1, the first data segment D1, the symbol lengths of the first data segment D1 are respectively ND1、ND2、ND3。
As can be seen that for time slot n, ND1+ND2+ND3+2*NP=Sn.When the carrier bandwidths that system is adopted are for 25kHz, T is
45ms, N be 864 symbols, NpFor 8 symbols.For time slot 0, ND1=ND2=ND3=22 symbols, for regular time slots（Time slot 0
To time slot 6）, ND1=ND2=ND3=36 symbols, remaining 38 symbols distribute to protection time slot GP, the 4th protection symbol GP4, the
Five protection symbol GP5 and the 6th protection symbol GP6.When the 4th protection symbol GP4, the 5th protection symbol GP5 and the 6th protection character
When the length of number GP6 is disposed as 0, then length T of time slot GP is protectedGPFor 38 symbols；If working as TGP4=TGP5=TGP6When=4,
TGP=26。
In above-mentioned structure of time slot, pilot is fixed and adoptedModulation system.For data segment, when for holding
When loading system broadcast message, control signaling or voice messaging, adoptModulation system；When for carrying data message
When, can adoptModulation system orModulation system, specifically using which kind of modulation system, by control
Signaling is indicated.
If a (m) represents the bit sequence for needing transmission, wherein m is bit sequence number.Transmitting bit sequence will be mapped to adjust
On symbol sebolic addressing s (k) processed, wherein k is corresponding symbol sequence number.Modulation symbol s (k) is by as the following formula by way of differential coding
Obtain：
s(0)=1;
ForWith transmitted bit to hint obliquely at relation as shown in table 1：
Table 1：Phase shift rule
As shown in Table 1, complex modulation symbols s (k) have eight kinds of possible values：ejnπ/4, when k is even number, n=2,4,6,8；
When k is odd number, n=1,3,5,7.
ForWith transmitted bit to hint obliquely at relation as shown in table 2:
Table 2：Phase shift rule
As shown in Table 2, complex symbol s (k) has 16 kinds of possible values：ejnπ/8, when k is even number, n=2,4,6,8,10,
12,14,16；When k is odd number, n=1,3,5,7,9,11,13,15.
System based on frame structure of the present invention supports two kinds of transmission modes, i.e. normal mode and mode of extension.
When normal mode is configured to, each regular time slots can carry business datum and signaling；
When mode of extension is configured to, system specially reserves certain channel for carrying up-downgoing signaling, communication equipment
Between Signalling exchange carried by specified channel.
Each time slot can be configured to a channel in one radio frames, be upstream or downstream according to time slot, correspond to
Row channel or down channel.In once communicating, a pair of up-downgoing channels, or a unidirectional upstream or downstream letter are can configure
Road.For the configuration of channel, can be notified by broadcast signaling or descending control signaling, it would however also be possible to employ default configuration mode,
For example when up-downgoing channel pairs are used, time slot 1 and time slot 4 are paired into a channel, and time slot 2 and time slot 5 are matched, time slot 3
Match with time slot 6.
Present invention also offers the communication means of the frame structure based on the multi-slot using time division multiple acess access module.
Method one：
A kind of communication means of the frame structure of multi-slot based on using time division multiple acess access module as shown in Figure 6, be
System works in normal mode, the process step of link establishment.Signaling channel adopts time division multiplex mould with data traffic channels
Formula.
Base station equipment can regularly send downlink system broadcast message or control signaling on time slot 0.In system broadcast information
Or in control signaling, comprising channel busy indication bit, for indicating the busy-idle condition of each time slot, such mobile station will be accessed
During system, channel busy that can be in system broadcast information or control signaling is indicated, selects any one idle channel to access.
Mobile station is obtained after idle channel configured information, on the corresponding ascending time slot of idle channel, initiates Stochastic accessing, and in correspondence
Descending control signaling is received on descending time slot, is indicated according to descending control signaling, after link establishment success, you can start business
Communication, is received and transmitted using the uplink and downlink timeslot of distribution.
More specifically, in order to reach further effect, described method can also include intervalometer, the judgement of abnormal condition
And process.As shown in fig. 7, wherein I is Stochastic accessing attempts enumerator, ImaxFor maximum allowable Stochastic accessing number of attempt, can
By system configuration；T is access back off timer.
Comprise the following steps that：
1.1）Mobile station has service request；
1.2）Access enumerator to set to 0, start intervalometer；
1.3）Base station equipment sends broadcast message or descending control signaling on starting time slots；
2.1）Monitor base station equipment sends on starting time slots broadcast message or descending control signaling；
2.2）Idle channel is determined whether, if it has, carrying out step 3）；If it is not, then judge whether intervalometer is overtime,
If intervalometer has not timed out, repeat step 2.1）If timer expiry, access failure terminates this access attempts；
3）Mobile station is obtained after idle channel configured information, on the corresponding ascending time slot of idle channel, is initiated to access and is asked
Ask；
4.1）With select ascending time slot corresponding to descending time slot on monitor descending control signaling；
4.2）Judge whether the link establishment order for receiving base station equipment transmission, if it is, link establishment, and walked
Rapid 5）；If not, enumerator adds 1, and it is compared with default maximum allowable Stochastic accessing number of attempt；If enumerator
Equal to or more than maximum allowable Stochastic accessing number of attempt, then access failure, terminates this access attempts；If enumerator is little
In maximum allowable Stochastic accessing number of attempt, then judge whether intervalometer is overtime, if intervalometer has not timed out, repeat step
2.1）If timer expiry, access failure terminates this access attempts；
5）In the enterprising industry business transmitting-receiving of channel for selecting.
Another embodiment, step 4）Described link establishment order indicates that it is descending that instruction is configured comprising channel configuration
Channel and up channel.Step 5）Receive and dispatch for channel enterprising industry business of the terminal unit in configuration.
Method two：
The communication means of another kind as shown in Figure 8 based on the frame structure of the multi-slot using time division multiple acess access module,
It is operated under mode of extension for system, the process step of link establishment.
For mode of extension, the channel that system configuration is fixed is exclusively used in Signalling exchange between base station equipment and terminal unit, believes
Signaling channel can be notified by broadcast signaling, it would however also be possible to employ default configuration, for example can default configuration time slot 1 and time slot 4 be used as
Downlink signaling channel and uplink signalling channel.Under default configuration pattern, when mobile station needs to carry out service communication, matching somebody with somebody first
On the uplink signalling channel put, Stochastic accessing is initiated, and monitor downlink signaling channel, receive the response message of base station equipment, such as
Fruit receives the request response of base station equipment link setup, according to the channel distribution that base station indicates in link setup response message, goes to corresponding
Channel on carry out the transmitting-receiving of voice or data.
More specifically, in order to reach further effect, described method also includes intervalometer, the judgement of abnormal condition and place
Reason, as shown in figure 9, wherein I is Stochastic accessing attempts enumerator, ImaxFor maximum allowable Stochastic accessing number of attempt, can be by being
It is under unified central planning to put.
Comprise the following steps that：
1.0）Configuration based on using time division multiple acess access module multi-slot frame structure a pair of ascending time slots, it is descending when
Gap is used as carrying uplink signalling channel, the downlink signaling channel of uplink and downlink control signaling；
1.1）Mobile station has service request；
1.2）Access enumerator to set to 0；
1.3）Transmission link sets up request on uplink signalling channel；
2.1）Monitor the descending control signaling on downlink signaling channel；
2.2）Judge whether the request for building link response for receiving base station equipment transmission, if it is, link establishment, is carried out
Step 3）；If not, enumerator adds 1, and it is compared with default maximum allowable Stochastic accessing number of attempt；If counted
Device is equal to or more than maximum allowable Stochastic accessing number of attempt, then access failure, terminates this access attempts；If enumerator
Less than maximum allowable Stochastic accessing number of attempt, then the fallback value of backoff timer is randomly choosed, and it is super in backoff timer
Shi Hou, repeat step 1.3）；
3）The enterprising industry business transmitting-receiving of downlink signaling channel, uplink signalling channel in configuration.
The present invention also provides a kind of phase combination different by two pilots to detect the info class sent on channel
The method of type.Described method is based on frame structure of the present invention.
In each time slot, the information for carrying every time may have business datum or control signaling, in order to allow the reception can area
Divide the type of transmission information, can be carried out by the phase combination of the first pilot P1 in each time slot and the second pilot P2
Indicate.For the first pilot P1 and the second pilot P2, it is business datum that data segment sends information type（Including voice, electricity
Circuit-switched data or grouped data）When, the phase place of the first pilot P1 and the second pilot P2 is respectively first phase and second phase；
When data segment transmission information type is control signaling, the phase place of the first pilot P1 and the second pilot P2 is respectively third phase
With the 4th phase place.Receiving device detects first the pilot frequency sequence for receiving, with known first pilot P1 and the second pilot
P2 is compared respectively with the 3rd pilot and the 4th pilot for receiving.
If the phase place of phase place the 5th of the 3rd pilot for receiving is close or equal to first phase, the phase of the 4th pilot
The 6th phase place of position is close or equal to second phase, then it represents that what is received is business datum, i.e. the first data segment, the second data
What section, the 3rd data segment were carried is business datum；
If the phase place of phase place the 5th of the 3rd pilot for receiving is close or equal to third phase, the phase of the 4th pilot
The 6th phase place of position is close or equal to the 4th phase place, then it represents that what is received is control signaling, i.e. the first data segment, the second data
What section, the 3rd data segment were carried is control signaling.
By taking time slot 0 as an example, system broadcast information carries out time division multiplex with control signaling, and using pilot phase indicated number is carried out
According to section carrying is system broadcast information or descending control signaling.Judge transmission is system broadcasts or descending control letter
Order, is indicated by the phase combination of the first pilot P1 and the second pilot P2, that is, set the first pilot P1 and second and lead
When broadcast message is sent, phase place is respectively first phase and second phase to frequency range P2；Sending control signaling or call signaling
When, phase place is respectively third phase and the 4th phase place.In the present embodiment, second phase is equal with third phase, first phase with
4th phase place is equal.In the present embodiment, it is 45 ° to define first phase, when second phase is 225 °, for time slot 0, represents current
Transmission is system broadcast information, and to other conversational traffic time slots, represent transmission is business datum；When first phase is
225 °, when second phase is 45 °, for time slot 0 and other conversational traffic time slots, represent current transmission is control signaling.
Determination methods for other conversational traffic time slots are identical with the determination methods for time slot 0.
As shown in Figure 10：Receiving device receives pilot tone and data；The receiving device pilot frequency sequence that receives of detection, with known
The first pilot P1 and the second pilot P2 be compared with the 3rd pilot and the 4th pilot for receiving respectively；If
5th phase place of the 3rd pilot for receiving is close or equal to first phase, and the 6th phase place of the 4th pilot is close or equal to
Second phase, then it represents that what is received is broadcast message；If the phase place of the 3rd pilot for receiving and the 4th pilot point
Not Jie Jinhuodengyu phase place be third phase and the 4th phase place, then it represents that what is received is control signaling.
If the 5th phase place and first phase, while the 6th phase place and second phase；Meanwhile, if the 5th phase
Position and third phase, while the 6th phase place and the 4th phase place, then detect mistake, abandon the business datum for receiving.
Above-described embodiment is intended merely to the explanation present invention, and is not used as limitation of the invention.As long as according to this
Bright technical spirit, is changed, modification etc. all will fall in the range of the claim of the present invention to above-described embodiment.
Claims (38)
1. a kind of communication means of the frame structure of the multi-slot based on using time division multiple acess access module, it is characterised in that be based on
Communicated using the frame structure of the multi-slot of time division multiple acess access module, signaling channel is multiple using the time-division with data traffic channels
Use pattern；
Described frame structure includes being located at the starting time slots of frame head, and more than one conversational traffic time slot；Described conventional industry
Business time slot is transmitting-receiving transfer point including the intersection of descending time slot group and ascending time slot group, descending time slot group and ascending time slot group,
Transmitting-receiving transfer point described in frame structure is one；
Described starting time slots be configured to it is descending, for bearing system broadcast message or control signaling；Each conversational traffic time slot
Can be configured to upstream or downstream；
Step is as follows：
1) base station equipment sends broadcast message or descending control signaling, in described broadcast message or descending control signaling, comprising
Channel busy indication bit, for indicating the busy-idle condition of each time slot；
2) mobile station listening broadcast information or descending control signaling, obtain channel busy information；
3) mobile station is obtained after idle channel configured information, on the corresponding ascending time slot of idle channel, initiates access request；
4) with the descending time slot corresponding to the ascending time slot for selecting on receive response signaling of the base station equipment to access request, chain
Road is set up；
5) in the enterprising industry business transmitting-receiving of channel for selecting.
2. the communication means of the frame structure of the multi-slot based on using time division multiple acess access module according to claim 1,
Characterized in that, described starting time slots are shorter than conversational traffic time slot.
3. the communication means of the frame structure of the multi-slot based on using time division multiple acess access module according to claim 1,
Characterized in that, being provided with protection time slot in the position of described transmitting-receiving transfer point, the radio frequency for communication equipment completes to receive
Conversion is sent, and offsets the spatial transmission time delay between communication equipment.
4. the communication means of the frame structure of the multi-slot based on using time division multiple acess access module according to claim 3,
Characterized in that, the afterbody of each ascending time slot of described ascending time slot group is configured with protection symbol.
5. the communication means of the frame structure of the multi-slot based on using time division multiple acess access module according to claim 4,
Characterized in that, the protection symbol equal length of each ascending time slot.
6. the communication means of the frame structure of the multi-slot based on using time division multiple acess access module according to claim 1,
Characterized in that, described starting time slots, conversational traffic time slot include 2 pilots, 3 data segments；The structure of structure of time slot
Into being followed successively by：First data segment, the first pilot, the second data segment, the second pilot, the 3rd data segment；Described pilot
Carry pilot frequency sequence；Described data segment is used for carrier signaling, voice or data message.
7. the communication means of the frame structure of the multi-slot based on using time division multiple acess access module according to claim 6,
Characterized in that, the first data segment, the second data segment, the equal length of the 3rd data segment, the first pilot, the second pilot
Equal length.
8. the frame structure based on the multi-slot using time division multiple acess access module according to any one of claim 1 to 7
Communication means, it is characterised in that the descending time slot of descending time slot group is corresponded with the ascending time slot of ascending time slot group.
9. the communication means of the frame structure of the multi-slot based on using time division multiple acess access module according to claim 8,
Characterized in that, described descending time slot group includes 3 descending time slots, ascending time slot group includes 3 ascending time slots.
10. the communication means of the frame structure of the multi-slot based on using time division multiple acess access module according to claim 1,
Characterized in that, step 1) it is specially：
1.1) mobile station has service request；
1.2) access enumerator to set to 0, start intervalometer；
1.3) base station equipment sends broadcast message or descending control signaling on starting time slots.
The communication party of the frame structure of 11. multi-slots based on using time division multiple acess access module according to claim 10
Method, it is characterised in that step 2) it is specially：
2.1) base station equipment sends on starting time slots broadcast message or descending control signaling are monitored；
2.2) idle channel is determined whether, if it has, carrying out step 3)；If it is not, then judge whether intervalometer is overtime, if
Intervalometer has not timed out, repeat step 2.1), if timer expiry, access failure terminates this access attempts.
The communication party of the frame structure of 12. multi-slots based on using time division multiple acess access module according to claim 11
Method, it is characterised in that step 4) it is specially：
4.1) with select ascending time slot corresponding to descending time slot on monitor descending control signaling；
4.2) the link establishment order for receiving base station equipment transmission is judged whether, if it is, link establishment, and carry out step
5)；If not, enumerator adds 1, and it is compared with default maximum allowable Stochastic accessing number of attempt；If enumerator etc.
In or more than maximum allowable Stochastic accessing number of attempt, then access failure, terminates this access attempts；If enumerator is less than
Maximum allowable Stochastic accessing number of attempt, then judge whether intervalometer is overtime, if intervalometer has not timed out, repeat step
2.1), if timer expiry, access failure terminates this access attempts.
The communication party of the frame structure of 13. multi-slots based on using time division multiple acess access module according to claim 12
Method, it is characterised in that step 4) described in link establishment order indicate comprising channel configuration, indicate the down channel and upper of configuration
Row channel.
14. a kind of communication means of the frame structure of the multi-slot based on using time division multiple acess access module, it is characterised in that be based on
Communicated using the frame structure of the multi-slot of time division multiple acess access module, configuration is based on using the more of time division multiple acess access module
A pair of ascending time slots of the frame structure of time slot, descending time slot as carry uplink and downlink control signaling uplink signalling channel,
Downlink signaling channel, described method and step is as follows：
1) Mobile Origination is accessed, and transmission link sets up request；
2) mobile station receives the request for building link response of base station equipment transmission on downlink signaling channel；
3) in downlink signaling channel, the enterprising industry business transmitting-receiving of uplink signalling channel；
Described frame structure includes being located at the starting time slots of frame head, and more than one conversational traffic time slot；Described conventional industry
Business time slot is transmitting-receiving transfer point including the intersection of descending time slot group and ascending time slot group, descending time slot group and ascending time slot group,
Transmitting-receiving transfer point described in frame structure is one；
Described starting time slots be configured to it is descending, for bearing system broadcast message or control signaling；Each conversational traffic time slot
Can be configured to upstream or downstream.
The communication party of the frame structure of 15. multi-slots based on using time division multiple acess access module according to claim 14
Method, it is characterised in that described starting time slots are shorter than conversational traffic time slot.
The communication party of the frame structure of 16. multi-slots based on using time division multiple acess access module according to claim 14
Method, it is characterised in that the position of described transmitting-receiving transfer point is provided with protection time slot, the radio frequency for communication equipment completes to connect
Conversion is transmitted and received, and offsets the spatial transmission time delay between communication equipment.
The communication party of the frame structure of 17. multi-slots based on using time division multiple acess access module according to claim 16
Method, it is characterised in that the afterbody of each ascending time slot of described ascending time slot group is configured with protection symbol.
The communication party of the frame structure of 18. multi-slots based on using time division multiple acess access module according to claim 17
Method, it is characterised in that the protection symbol equal length of each ascending time slot.
The communication party of the frame structure of 19. multi-slots based on using time division multiple acess access module according to claim 14
Method, it is characterised in that described starting time slots, conversational traffic time slot includes 2 pilots, 3 data segments；Structure of time slot
Composition is followed successively by：First data segment, the first pilot, the second data segment, the second pilot, the 3rd data segment；Described pilot tone
Section carries pilot frequency sequence；Described data segment is used for carrier signaling, voice or data message.
The communication party of the frame structure of 20. multi-slots based on using time division multiple acess access module according to claim 19
Method, it is characterised in that the first data segment, the second data segment, the equal length of the 3rd data segment, the first pilot, the second pilot tone
The equal length of section.
21. frame structures based on the multi-slot using time division multiple acess access module according to any one of claim 14 to 20
Communication means, it is characterised in that the descending time slot of descending time slot group is corresponded with the ascending time slot of ascending time slot group.
The communication party of the frame structure of 22. multi-slots based on using time division multiple acess access module according to claim 21
Method, it is characterised in that described descending time slot group includes 3 descending time slots, ascending time slot group includes 3 ascending time slots.
The communication party of the frame structure of 23. multi-slots based on using time division multiple acess access module according to claim 14
Method, it is characterised in that step 1) it is specially：
1.1) mobile station has service request；
1.2) access enumerator to set to 0；
1.3) transmission link sets up request on uplink signalling channel.
The communication party of the frame structure of 24. multi-slots based on using time division multiple acess access module according to claim 23
Method, it is characterised in that step 2) it is specially：
2.1) descending control signaling on downlink signaling channel is monitored；
2.2) the request for building link response for receiving base station equipment transmission is judged whether, if it is, link establishment, carries out step
3)；If not, enumerator adds 1, and it is compared with default maximum allowable Stochastic accessing number of attempt；If enumerator etc.
In or more than maximum allowable Stochastic accessing number of attempt, then access failure, terminates this access attempts；If enumerator is less than
Maximum allowable Stochastic accessing number of attempt, then randomly choose the fallback value of backoff timer, and after backoff timer time-out,
Repeat step 1.3).
The communication party of the frame structure of 25. multi-slots based on using time division multiple acess access module according to claim 14
Method, it is characterised in that step 3) it is specially：Base station equipment indicates channel configuration in link request response message is set up, mobile
The channel configuration that platform is indicated according to base station equipment in link request response message is set up, goes on the channel of channel configuration instruction
The business of carrying out transmitting-receiving.
The information type sent on a kind of detection channel of 26. frame structures of the multi-slot based on using time division multiple acess access module
Method, it is characterised in that communicated based on the frame structure of the multi-slot using time division multiple acess access module, configure：Data
When section transmission information type is business datum, the phase place of the first pilot is first phase, and the phase place of the second pilot is second
Phase place；Data segment sends information type when being control signaling, and the phase place of the first pilot is third phase, the phase of the second pilot
Position is the 4th phase place；
Described frame structure includes being located at the starting time slots of frame head, and more than one conversational traffic time slot；Described conventional industry
Business time slot is transmitting-receiving transfer point including the intersection of descending time slot group and ascending time slot group, descending time slot group and ascending time slot group,
Transmitting-receiving transfer point described in frame structure is one；
Described starting time slots be configured to it is descending, for bearing system broadcast message or control signaling；Each conversational traffic time slot
Can be configured to upstream or downstream；
Described method is specific as follows：
Receiving device detection the 3rd pilot, the 4th pilot that receive, described the 3rd pilot and the first pilot pair
Should, the phase place of the 3rd pilot is the 5th phase place, and the 4th pilot is corresponding with the second pilot, and the phase place of the 4th pilot is the
Six phase places；
If the 5th phase place is equal with first phase, while the 6th phase place is equal with second phase, then the first data segment, second count
According to section, the 3rd data segment carry be business datum；
If the 5th phase place is equal with third phase, while the 6th phase place is equal with the 4th phase place, then the first data segment, second count
According to section, the 3rd data segment carry be control signaling.
The detection channel of the frame structure of 27. multi-slots based on using time division multiple acess access module according to claim 26
The method of the information type of upper transmission, it is characterised in that described starting time slots are shorter than conversational traffic time slot.
The detection channel of the frame structure of 28. multi-slots based on using time division multiple acess access module according to claim 26
The method of the information type of upper transmission, it is characterised in that the position of described transmitting-receiving transfer point is provided with protection time slot, is used for
The radio frequency of communication equipment is completed to receive and sends conversion, and offsets the spatial transmission time delay between communication equipment.
The detection channel of the frame structure of 29. multi-slots based on using time division multiple acess access module according to claim 28
The method of the information type of upper transmission, it is characterised in that the afterbody of each ascending time slot of described ascending time slot group is configured with
Protection symbol.
The detection channel of the frame structure of 30. multi-slots based on using time division multiple acess access module according to claim 29
The method of the information type of upper transmission, it is characterised in that the protection symbol equal length of each ascending time slot.
The detection channel of the frame structure of 31. multi-slots based on using time division multiple acess access module according to claim 26
The method of the information type of upper transmission, it is characterised in that described starting time slots, conversational traffic time slot include 2 pilots,
3 data segments；The composition of structure of time slot is followed successively by：First data segment, the first pilot, the second data segment, the second pilot, the
Three data segments；Described pilot carries pilot frequency sequence；Described data segment is used for carrier signaling, voice or data message.
The detection channel of the frame structure of 32. multi-slots based on using time division multiple acess access module according to claim 31
The method of the information type of upper transmission, it is characterised in that the first data segment, the second data segment, the equal length of the 3rd data segment,
The equal length of the first pilot, the second pilot.
33. frame structures based on the multi-slot using time division multiple acess access module according to any one of claim 26 to 32
Detection channel on the method for information type that sends, it is characterised in that the descending time slot of descending time slot group and ascending time slot group
Ascending time slot correspond.
The detection channel of the frame structure of 34. multi-slots based on using time division multiple acess access module according to claim 33
The method of the information type of upper transmission, it is characterised in that described descending time slot group includes 3 descending time slots, ascending time slot group
Including 3 ascending time slots.
The detection channel of the frame structure of 35. multi-slots based on using time division multiple acess access module according to claim 26
The method of the information type of upper transmission, it is characterised in that described method, further includes：If the 5th phase place and the first phase
Position, while the 6th phase place and second phase；Meanwhile, if the 5th phase place and third phase, while the 6th phase
Position and the 4th phase place, then detect mistake, abandons the business datum for receiving.
The detection channel of the frame structure of 36. multi-slots based on using time division multiple acess access module according to claim 26
The method of the information type of upper transmission, it is characterised in that described first phase is equal with the 4th phase place, second phase and the 3rd
Phase place is equal.
The detection channel of the frame structure of 37. multi-slots based on using time division multiple acess access module according to claim 26
The method of the information type of upper transmission, it is characterised in that described method is detected to the pilot on each time slot.
The detection channel of the frame structure of 38. multi-slots based on using time division multiple acess access module according to claim 26
The method of the information type of upper transmission, it is characterised in that described business datum is voice, circuit data or grouped data.
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| US10027462B2 (en) * | 2014-10-31 | 2018-07-17 | Qualcomm Incorporated | Unified frame structure |
| CN105471563B (en) * | 2015-11-16 | 2018-12-07 | 海能达通信股份有限公司 | Dynamically distribute pulling method and communication equipment in the data of up channel |
| CN109561396B (en) * | 2018-12-13 | 2021-03-02 | 浙江天则通信技术有限公司 | Data transmission system for robot |
| CN111372285B (en) * | 2020-05-27 | 2020-09-22 | 北京中兴高达通信技术有限公司 | Frame sending method and device and frame receiving method and device |
| CN114337919A (en) * | 2021-12-21 | 2022-04-12 | 航天科工通信技术研究院有限责任公司 | Time division multiple access frame device for high-priority real-time access |
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| US7512109B2 (en) * | 2000-09-29 | 2009-03-31 | Intel Corporation | Slot structure for radio communications system |
| CN101202586A (en) * | 2004-08-14 | 2008-06-18 | 华为技术有限公司 | Channel establishing method |
| CN1901699A (en) * | 2005-07-22 | 2007-01-24 | 华为技术有限公司 | Method for realizing cluster service in TD-SCDMA system |
| CN101137230B (en) * | 2007-09-30 | 2010-09-08 | 东南大学 | Time-division synchronous CDMA and mobile self-organizing network combined media access method |
| US7936709B2 (en) * | 2008-03-18 | 2011-05-03 | Mitsubishi Electric Research Laboratories, Inc. | Distributed beacon enabled wireless networks |
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