CN102946295B - The method communicating and setting up is carried out based on the frame structure that can mate different carrier bandwidth - Google Patents
The method communicating and setting up is carried out based on the frame structure that can mate different carrier bandwidth Download PDFInfo
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Abstract
The present invention relates to a kind of frame structure mating different carrier bandwidth, and the communication method based on described frame structure. Mate a frame structure for different carrier bandwidth, comprise the equal gap in short-term of number and long time gap, one in short-term gap and one long time gap form time gap group, gap group when described frame structure comprises more than. The useful effect of the present invention is as follows: gap when a frame comprises multiple, time gap can change according to the difference of carrier bandwidths, greatly improve utilization ratio and service efficiency. In frame structure, in short-term gap and long time gap pairing use, mode is set up in the communication that can realize more excellent effect based on this structure. The afterbody of gap when each is long, all retaining length is TGPProtection time gap GP, complete the space propagation delay receiving/sending conversion and offset between signal equipment for the radio frequency of signal equipment, reduce due to asynchronous or multipath delay cause time gap between interference. By time gap group pilot phase difference carry out localization time slot head, simple to operate, efficiency height.
Description
Technical field
The present invention relates to a kind of frame structure, more specifically, it relates to a kind of frame structure mating different carrier bandwidth, and the communication method based on described frame structure.
Background technology
At present, the development of various wireless communication technology is rapid, and band resource is more and more nervous. Traditional intercom, trunking communication adopt analog system, one pair of frequency spectrum can only carry a speech business, transmission efficiency is low, confidentiality is poor, in order to overcome the shortcoming of tradition simulation intercom system, current American-European multiple country has proposed various narrow-band digital communication scheme, replaces original simulation intercom system gradually.
Establish the link in the process carrying out voice or data corresponding at equipment room, it is necessary to established the link by signaling, or need to be indicated by link by link control signaling and control in communication process.
It is illustrated in figure 1 frame structure and the link control signaling type of transmission of a kind of prior art. In this kind of technology, gap when a radio frames comprises two, each time gap central authorities, retains one section of symbol lengths, for transmit embedding same step sequence or transmit embedded Control signaling. Time-multiplexed mode is adopted to use sign resources with step sequence and embedded signaling.
In order to transmit complete link control signaling, this technology adopts the mode of superframe as shown in Figure 2, by link control signalling segment, is embedded in multiple frame respectively and transmits.
For above-mentioned technology, gap when one frame comprises two, 2 channels can only be supported at most, user capacity is relatively little, in addition, same step sequence and control signal are embedded in business time-slot by time division multiplexing mode, it is necessary to control signal is carried out segmentation and cascade, signaling type of transmission is complicated, and signaling delay is bigger.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided one compared with prior art, channel capacity has further lifting, signaling transmission is simple, communication delay is little, system to broadband evolution adopt flexibly time division multiple access access pattern many times gap frame structure, and provide the communication method based on described frame structure.
The technical scheme of the present invention is as follows:
Mate a frame structure for different carrier bandwidth, comprise the equal gap in short-term of number and long time gap, one in short-term gap and one long time gap form time gap group, gap group when described frame structure comprises more than.
As preferably, time described in gap group, gap is front in short-term, and time long, gap is rear, and described frame structure is taking gap in short-term as starting time slots.
As preferably, described long time gap afterbody gap when being configured with protection, the radio frequency for signal equipment completes to receive/send conversion, offsets the space propagation delay between signal equipment, reduce due to asynchronous or multipath delay cause time gap between interference.
As preferably, in short-term gap, long time gap include 2 pilots and 3 data sections, the formation of structure of time slot is followed successively by: the first data section, the first pilot, the 2nd data section, the 2nd pilot, the 3rd data section; Described pilot is for carrying pilot tone sequence; Described data section is used for carrier signaling, voice or data information.
As preferably, be positioned at frame head time gap group gap in short-term and long time gap pilot adopt identical phase place; During other in frame gap group gap in short-term and long time gap pilot and frame head time gap group gap in short-term and long time gap pilot adopt contrary phase place.
As preferably, the length of the first data section, the 2nd data section, the 3rd data section is equal, the length of the first pilot, the 2nd pilot is equal.
As preferably, described gap in short-term adopts time-multiplexed mode to transmit Forward Signalling and reverse signaling.
As preferably, described gap in short-term transmits Forward Signalling and reverse signaling by pre-configured mode, and concrete grammar is: in the cycle of configuration N frame, wherein M frame is used for transmitting forward control signal, and N-M frame is for transmitting reverse signaling; Described Forward Signalling sends continuously, or alternately sends with reverse signaling.
As preferably, described gap in short-term transmits Forward Signalling and reverse signaling by the mode of signaling conventions, and concrete grammar is: in the cycle of configuration N frame, the first frame always sends Forward Signalling, by the indication information comprised in Forward Signalling, reverse signaling is indicated to allow the frame in instruction to send.
As preferably; during the reverse signaling of described short slot transmission; the protection timed interval of section configuration certain time length before the first data section, in the protection timed interval of the backend configuration certain time length of the 3rd data section, for being the mobile equipment transceiving radio frequency conversion reserved regular hour.
The method communicating between signal equipment and setting up, set up request by time gap group carry, wherein gap bearing link control signal in short-term, time long, gap bearing link sets up request signaling;
Step is as follows:
1) the first signal equipment sends link control signaling, request for building link to the 2nd signal equipment;
2), after the 2nd signal equipment receives request for building link, chain response is built to the first communication device feeding back;
3), after the first signal equipment receives and builds chain response, voice communication or data corresponding is started.
As preferably, step 2) in, when the 2nd signal equipment sets up request signaling long by bearing link, gap builds chain response to the first communication device feeding back.
As preferably, if the chain of building that the first signal equipment does not receive the 2nd signal equipment responds, then repeating to send link control signaling, request for building link.
As preferably, the first signal equipment sends link control signaling in the gap in short-term of adjacent next frame of the frame building chain response receiving the 2nd signal equipment, and gap starts to carry out communications when same frame corresponding long.
As preferably, for voice communication, the first signal equipment sends link control signaling in gap in short-term, and gap starts to send voice data when same frame corresponding long; And counting is started by the initial frame of voice of this frame, in the cycle of configuration L frame, wherein the gap in short-term of K frame is for sending link control signaling, and L-K frame is used for the 2nd signal equipment and sends reverse signaling;
For data corresponding, first signal equipment sends link control signaling in gap in short-term, and sends data frame head when same frame corresponding long in gap, from next frame of this frame, sending data block when every frame long in gap, the frame number of transmission is indicated by data frame head; The gap in short-term not used in communication process, for the 2nd reverse signaling of communication device transfers.
As preferably, for data corresponding, further, whether the data packet that the 2nd communication device feeding back receives correctly receives, and after feedback is sent completely, the first signal equipment uses corresponding time gap to continue to send data.
As preferably, for voice communication, described period L frame is even frame, and in every even frame, the gap in short-term of the frame of the first half is for sending link control signaling, and the frame of later half is used for the 2nd signal equipment and sends reverse signaling.
As preferably, described link control signaling comprise object communication equipment address, the instruction of business type, the instruction of signaling type, individual exhale/group calling instruction, pairing long time the information type instruction of gap carrying, communication terminate mark.
The method communicating between signal equipment and setting up, step is as follows:
A) the first signal equipment is by gap bearing link control signal in short-term, and time long, gap sends business frame head;
B) the first signal equipment starts to send voice information or data information at next frame sending business frame head.
As preferably, configuring the number of times repeating to send link control signaling, business frame head of the first signal equipment, the first signal equipment starts to send business datum after repeating to send link control signaling, business frame head.
As preferably, the first signal equipment periodically sends link control signaling by gap in short-term, adds conversation group in time for the signal equipment entered late during group calling.
The useful effect of the present invention is as follows:
The present invention provides a kind of structure frame flexibly, adopts time division multiple access access pattern, and gap when a frame comprises multiple, is respectively used to carrier signaling or voice, data service. Gap when one frame comprises multiple, time gap can change according to the difference of carrier bandwidths, greatly improve utilization ratio and service efficiency.
In frame structure, in short-term gap and long time gap pairing use, mode is set up in the communication that can realize more excellent effect based on this structure. The afterbody of gap when each is long, all retaining length is TGPProtection time gap GP, complete the space propagation delay receiving/sending conversion and offset between signal equipment for the radio frequency of signal equipment, reduce due to asynchronous or multipath delay cause time gap between interference.
By time gap group pilot phase difference carry out localization time slot head, simple to operate, efficiency height.
The technical problems such as technical solutions according to the invention solve existing narrow-band digital radio communication system, and transmission efficiency is low, data delay is big, signaling and business data transmission scheme are complicated.
Accompanying drawing explanation
Fig. 1 is the frame structural representation of existing narrow-band digital intercommunication standard specifications frame;
Fig. 2 is that DMR system is adopted the structural representation of superframe for voice transfer;
Fig. 3 is the general structural representation of frame of the present invention;
Fig. 4 is the structural representation of an embodiment of frame of the present invention;
Fig. 5 is the structural representation of another embodiment of frame of the present invention;
The structural representation of gap when Fig. 6 is frame of the present invention;
Fig. 7 is structure of time slot schematic diagram during the reverse signal of transmission;
Fig. 8 is the method schematic diagram communicating between a kind of signal equipment and setting up;
Fig. 9 is the transmission mode schematic diagram having the straight-through voice transfer building chain;
Figure 10 is the transmission mode schematic diagram of the embodiment of data corresponding;
Figure 11 is the transmission mode schematic diagram of an embodiment again of data corresponding;
Figure 12 is the method schematic diagram communicating between another kind of signal equipment and setting up;
Figure 13 is the transmission mode schematic diagram without the straight-through voice transfer building chain;
In figure: gap when GP is protection, D1 is the first data section, and D2 is the 2nd data section, and D3 is the 3rd data section; P1 is the first pilot, and P2 is the 2nd pilot, and GT1 was the first protection timed interval; GT2 was the 2nd protection timed interval, and LCS is link control signaling, and RS is reverse signaling.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Mate a frame structure for different carrier bandwidth, comprise the equal gap in short-term of number and long time gap, one in short-term gap and one long time gap form time gap group, gap group when described frame structure comprises more than.
Time described in gap group, gap is front in short-term, and time long, gap is rear, and described frame structure is taking gap in short-term as starting time slots.
Described long time gap afterbody gap GP when being configured with protection, the radio frequency for signal equipment completes to receive/send conversion, offsets the space propagation delay between signal equipment, reduce due to asynchronous or multipath delay cause time gap between interference.
As shown in Figure 3, gap when a radio frames comprises M, time long by the individual gap in short-term of Q/2 and Q/2, gap forms. If time-gap number is from 0, time gap 0 be the starting time slots in a radio frames, be positioned at the frame head of radio frames. The time gap being numbered even number is gap in short-term, gap when the time gap being numbered odd number is long. Two adjacent gap i(i in short-term are even number, and n is less than Q) and long time gap i+1 form time gap group, pairing use, as time gap 0 and time gap 1 match use, time gap 2 and time gap 3 match use. The afterbody of gap when each is long, all retaining length is TGPProtection time gap GP, complete the space propagation delay receiving/sending conversion and offset between signal equipment for the radio frequency of signal equipment, reduce due to asynchronous or multipath delay cause time gap between interference.
In the present embodiment, T equals 45ms, is a radio frames length. When the carrier bandwidths adopted is 25kHz, Q=8, frame structure is as shown in Figure 4. When the carrier bandwidths adopted is 12.5kHz, Q=4, frame structure is as shown in Figure 5.
Generalized slot structure as shown in Figure 6, each time gap comprise 2 pilots and 3 data sections, the formation of structure of time slot is followed successively by: the first data section D1, the first pilot P1, the 2nd data section D2, the 2nd pilot P2, the 3rd data section D3. The length of the first data section D1, the 2nd data section D2, the 3rd data section D3 is equal, and the length of the first pilot P1, the 2nd pilot P2 is equal. Pilot carrying pilot tone sequence, detects synchronously for take over party, auxiliary data demodulation, carries out phase place, frequency deviation adjustment etc., and for pilot tone sequence, take over party can be used for auxiliary data demodulation, it is possible to is not used in auxiliary data demodulation. Data section is used for carrier signaling, voice or data information.
In the present embodiment, for described frame structure, its radio frames length is Tms, comprises N number of symbol. Each time the symbol numerical digit S that comprises of gapn, wherein n is time-gap number.
Then for gap time each, the length of the first pilot P1 and the 2nd pilot P2 is NPIndividual symbol, the symbol lengths of the first data section D1, the first data section D1, the first data section D1 is respectively ND1��ND2��ND3��
Identical at maintenance frame length, each time the sign digit that comprises of gap group identical when, gap when can comprise more under 25kHz bandwidth, each value is relevant to design requirement:
Frame length degree 45ms is constant for setting wireless, and for different carrier bandwidths, sampling rate is different, and when carrier bandwidths is 25kHz, sampling rate is 19.2kHz, and total sign digit of corresponding 45ms frame length is 45x19.2=864, and each symbol lengths is 1/19.2=52.083us; When carrier bandwidths is 12.5kHz, sampling rate is total sign digit that 9.6kHz, 45ms frame length comprises is 45x9.6=432, and the length of each symbol is 1/9.6=104.166us.
So identical frame length, if in 12.5kHz bandwidth based on structure of time slot, gap when being 4 altogether, wherein each in short-term gap comprise 82 symbols, when each is long, gap comprises 124 symbols, when bandwidth is 25kHz, due to each symbol length only 12.5kHz time half, when when therefore keeping each, the sign digit of gap group is identical, when 4, gap only account for 432 symbols, and when 4, the length of gap is 22.5ms, to keep the frame length degree of 45ms, gap when needing to expand 4 again, because now gap number can reach 8, and frame length is identical with during 12.5kHz. Namely set carrier bandwidths as B1, B2, it is Q1, Q2, then Q1=Q2*(B1/B2 to number during correspondence).
It may be seen that for time gap n, ND1+ND2+ND3+2*NP=Sn. When the carrier bandwidths that system adopts is 12.5kHz, T is 45ms, N is 432 symbols, NpIt is 8 symbols. For gap in short-term, ND1=ND2=ND3=22 symbols, for gap time long, ND1=ND2=ND3=36 symbols, remaining 20 allocation of symbols give gap GP when protecting, the symbol lengths T of gap GP during each protectionGP=10. When the carrier bandwidths that system adopts is 25kHz, T is 45ms, N is 864 symbols, Np, GP identical when being 12.5kHz with the sign digit that gap time long, in short-term gap comprise with carrier bandwidths.
Gap is mainly used in bearing link control signal LCS in short-term, and time long, gap can be used for carrier signaling, voice or data. In order to facilitate locating frame head time slot position, be positioned at frame head time gap group gap in short-term and long time gap pilot adopt identical phase place; During other in frame gap group gap in short-term and long time gap pilot and frame head time gap group gap in short-term and long time gap pilot adopt contrary phase place. In the present embodiment, time gap 0 and time gap 1 in pilot tone adopt identical phase place (0 ��), other time gap in pilot phase and time gap 0, time gap 1 anti-phase (180 ��).
Gap may be used for Forward Signalling and reverse signaling RS transmits in short-term, and Forward Signalling and reverse signaling RS transmission can adopt time-multiplexed mode, transmit Forward Signalling and reverse signaling RS by mode that is pre-configured or signaling conventions.
The concrete grammar of pre-configured mode is: in the cycle of configuration N frame, wherein M frame is used for transmitting forward control signal, and N-M frame is for transmitting reverse signaling RS; Described Forward Signalling sends continuously, or alternately sends with reverse signaling RS.
The concrete grammar of the mode of signaling conventions is: in the cycle of configuration N frame, the first frame always sends Forward Signalling, by the indication information comprised in Forward Signalling, indicates reverse signaling RS to allow the frame in instruction to send.
During the reverse signaling RS of described short slot transmission; first protection timed interval GT1 of section configuration certain time length before the first data section D1; in the 2nd protection timed interval GT2 of the backend configuration certain time length of the 3rd data section D3, for being the mobile equipment transceiving radio frequency conversion reserved regular hour.
In the present embodiment, as shown in Figure 7, it is a kind of structure of time slot for reverse signaling RS, altogether comprises 82 symbols (in short-term gap), comprise data section and pilot. Wherein pilot tone comprises the first pilot P1 and the 2nd pilot P2, respectively accounts for 8 symbols, fixing employingModulation system. Data section comprises the first data section D1, the 2nd data section D2 and the 3rd data section D3 tri-part. When transmitting reverse signaling RS; need for the mobile equipment transceiving radio frequency conversion reserved regular hour; therefore section before the first data section D1; retained for first protection timed interval GT1; at rear section of the 3rd data section D3, retaining for the 2nd protection timed interval GT2, first protection timed interval GT1 and the 2nd protection timed interval GT2 all respectively account for 12 symbols; first data section D1 and the 3rd data section D3 all accounts for 10 symbols, and the 2nd data section D2 accounts for 22 symbols.
For, in above-mentioned structure of time slot, pilot is fixing to be adoptedModulation system, for data section, when broadcasting information, control signal or voice information for bearing system, adoptsModulation system, when for carry data information, can adoptModulation system orModulation system, concrete which kind of modulation system of employing, is indicated by control signal.
If a (m) represents the bit sequence needing transmission, wherein m is bit sequence number. Transmitting bit sequence by mapping to, on modulation symbol sequence s (k), wherein k is corresponding symbol sequence number. Modulation symbol s (k) is obtained by following formula by the mode of differential coding:
S (0)=1;
For With transmission bit to hint obliquely at relation as shown in table 1.
Table 1:Phase shift rule
Complex modulation symbols s (k) has eight kinds of possibility value: ejn��/4, when k is even number, n=2,4,6,8; When k is odd number, n=1,3,5,7.
For With transmission bit to hint obliquely at relation as shown in table 2.
Table 2:Phase shift rule
Plural number symbol s (k) has 16 kinds of possibility value: ejn��/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.
Based on above-mentioned frame structure, the present invention provides a kind of method communicating between signal equipment and setting up, set up request by time gap group carry, wherein gap bearing link control signal LCS, i.e. link control signaling LCS in short-term, time long, gap bearing link sets up request signaling. Described link control signaling LCS comprise object communication equipment address, the instruction of business type, the instruction of signaling type, individual exhale/group calling instruction, pairing long time the information type instruction of gap carrying, communication terminate mark.
Step is as shown in Figure 8:
1) the first signal equipment sends link control signaling LCS, request for building link to the 2nd signal equipment;
2), after the 2nd signal equipment receives request for building link, chain response is built to the first communication device feeding back;
3), after the first signal equipment receives and builds chain response, voice communication or data corresponding is started.
Step 2) in, the 2nd signal equipment by bearing link set up request signaling long time gap to the first communication device feeding back build chain response. If the chain of building that the first signal equipment does not receive the 2nd signal equipment responds, then repeat to send link control signaling LCS, request for building link. First signal equipment sends link control signaling LCS in the gap in short-term of adjacent next frame of frame building chain response receiving the 2nd signal equipment, and gap starts to carry out communications when same frame corresponding long.
Business based on link establishing method between above-mentioned signal equipment is transmitted, and for voice communication, the first signal equipment sends link control signaling LCS in gap in short-term, and gap starts to send voice data when same frame corresponding long; And counting is started by the initial frame of voice of this frame, in the cycle of configuration L frame, wherein the gap in short-term of K frame is for sending link control signaling, and L-K frame is used for the 2nd signal equipment and sends reverse signaling; As preferably, described period L frame is even frame, in every even frame, the gap in short-term of the frame of the first half is for sending link control signaling, and the frame of later half is used for the 2nd signal equipment and sends reverse signaling.
For data corresponding, first signal equipment sends link control signaling LCS in gap in short-term, and sends data frame head when same frame corresponding long in gap, from next frame of this frame, sending data block when every frame long in gap, the frame number of transmission is indicated by data frame head; The gap in short-term not used in communication process, for the 2nd reverse signaling RS of communication device transfers.
For data corresponding, further, whether the data packet that the 2nd communication device feeding back receives correctly receives, and after feedback is sent completely, the first signal equipment uses corresponding time gap to continue to send data.
The present embodiment, as shown in Figure 9, for time gap number Q=4, wherein the first signal equipment adopts gap in short-term to send link control signaling LCS at the n-th frame, and in same frame with this in short-term gap adjacent long time gap on send request for building link signaling, when n+1 frame corresponding long in gap, the link receiving the 2nd signal equipment sets up response message, if not receiving the response message of the 2nd signal equipment, first signal equipment can repeat to send link control signaling LCS and request for building link signaling, repeats transmission times and depends on Equipments Setting. If the first signal equipment receives the response message of the 2nd signal equipment at the n-th+m+1 frame, if voice communication, first signal equipment starts to send link control signaling LCS in the gap in short-term of n+m+2 frame, and starts to send voice data in gap when the matching convention of same frame. Starting counting with the initial frame of voice (n+m+2), in every 6 frames, the gap in short-term of first three frame all can be used for sending link control signaling LCS, and rear three frames can be used for the 2nd signal equipment and send reverse signaling RS.
As shown in Figure 10, if data corresponding, then after link has been set up, first signal equipment sends link control signaling LCS on n+m+2 frame in short-term gap, and when same frame corresponding long, gap sends data frame head, n+m+3 frame starts, and sends data block when every frame long in gap, and the frame number of transmission is indicated by data frame head. The gap in short-term not used in communication process, can be used for the 2nd reverse signaling RS of communication device transfers.
As shown in figure 11, for data corresponding, when being configured to affirmation mode, require whether the data packet that the 2nd communication device feeding back receives correctly receives, for half duplex mode of communication, the 2nd communication equipment use receives data and the gap in short-term during signaling, long time gap, send data feedback of status bag. After feedback of status bag is sent completely, the first signal equipment just brings into use corresponding time interval resource to continue to send data.
Present invention also offers the method communicating between another kind of signal equipment and setting up, as shown in figure 12, step is as follows:
A) the first signal equipment is by gap bearing link control signal LCS in short-term, and time long, gap sends business frame head;
B) the first signal equipment starts to send business at next frame sending business frame head.
Described business comprises voice information, data information.
Configuring the number of times repeating to send link control signaling LCS, business frame head of the first signal equipment, the first signal equipment repeats to send link control signaling LCS, business frame head, after sending last business frame head, starts to send business datum.
In order to receiving equipment reliable reception, in short-term gap and long time gap send link control signaling LCS and business frame head can send repeatedly continuously, such as N time, and then start to send business datum, concrete steps are as follows:
A) the first signal equipment is by gap bearing link control signal LCS in short-term, and time long, gap sends business frame head, and link control signaling LCS and business frame head can repeat to send multiframe, repeat transmission times configurable;
B) the first signal equipment starts to send business at next frame of last the business frame head sent.
When communicating beginning, the first signal equipment repeats to send several link control signaling LCS and business frame head, main purpose is relatively big or when signal to noise ratio is not high in order to prevent from disturbing, 2nd signal equipment cannot set up signaling to link by reliable reception, and this kind repeats to send general and carry out when link is initially set up. But multiplicity can not be too much, otherwise it is excessive to cause building chain time delay.
First signal equipment periodically sends link control signaling LCS by gap in short-term, adds conversation group in time for the signal equipment entered late during group calling. Adopting, relative to DMR, the scheme that embedded signaling is put in multiple frame transmission, described method process is simple and time delay is little, only need to separate frame gap signaling in short-term, can add session.
The present embodiment is for voice information, and as shown in figure 13, for this kind of pattern, first the first signal equipment sends link control signaling LCS and conventional voice frame head, and link control signaling LCS and conventional voice frame head can repeat to send, and transmission times is by Equipments Setting. After voice frame head, the first signal equipment starts to send voice information, it is not necessary to wait the confirmation of the 2nd signal equipment. In voice communication course, also need periodically to send link control signaling LCS by gap in short-term, so that other signal equipments afterwards add conversation group when group calling.
Above-described embodiment is only used to the present invention is described, and is not used as limitation of the invention. As long as according to the technical spirit of the present invention, changed by above-described embodiment, modification etc. is all by the scope dropping on the claim of the present invention.
Claims (11)
1. the method communicating between a signal equipment and setting up, it is characterized in that, based on the frame structure that can mate different carrier bandwidth, comprise the equal gap in short-term of number and long time gap, one in short-term gap and one long time gap form time gap group, gap group when described frame structure comprises more than; Time described in gap group, gap is front in short-term, and time long, gap is rear, and described frame structure is taking gap in short-term as starting time slots; Described long time gap afterbody gap when being configured with protection, the radio frequency for signal equipment completes to receive/send conversion, offsets the space propagation delay between signal equipment, reduce due to asynchronous or multipath delay cause time gap between interference; Set up request by time gap group carry, wherein gap bearing link control signal in short-term, time long, gap bearing link sets up request signaling;
Step is as follows:
1) the first signal equipment sends link control signaling and request for building link to the 2nd signal equipment;
2), after the 2nd signal equipment receives request for building link, chain response is built to the first communication device feeding back;
3), after the first signal equipment receives and builds chain response, voice communication or data corresponding is started.
2. communicate between signal equipment according to claim 1 set up method, it is characterised in that, step 2) in, the 2nd signal equipment by bearing link set up request signaling long time gap to the first communication device feeding back build chain response.
3. the method communicating between signal equipment according to claim 1 and setting up, it is characterised in that, if the chain of building that the first signal equipment does not receive the 2nd signal equipment responds, then repeat to send link control signaling, request for building link.
4. the method communicating between signal equipment according to claim 3 and setting up, it is characterized in that, first signal equipment sends link control signaling in the gap in short-term of adjacent next frame of frame building chain response receiving the 2nd signal equipment, and gap starts to carry out communications when same frame corresponding long.
5. the method communicating between signal equipment according to claim 4 and setting up, it is characterised in that, for voice communication, the first signal equipment sends link control signaling in gap in short-term, and gap starts to send voice data when same frame corresponding long; And counting is started by the initial frame of voice of this frame, in the cycle of configuration L frame, wherein the gap in short-term of K frame is for sending link control signaling, and L-K frame is used for the 2nd signal equipment and sends reverse signaling; For data corresponding, first signal equipment sends link control signaling in gap in short-term, and sends data frame head when same frame corresponding long in gap, from next frame of this frame, sending data block when every frame long in gap, the frame number of transmission is indicated by data frame head; The gap in short-term not used in communication process, for the 2nd reverse signaling of communication device transfers.
6. the method communicating between signal equipment according to claim 5 and setting up, it is characterised in that, for data corresponding, further, whether the data packet that the 2nd communication device feeding back receives correctly receives, and after feedback is sent completely, the first signal equipment uses corresponding time gap to continue to send data.
7. the method communicating between signal equipment according to claim 5 and setting up, it is characterized in that, for voice communication, described period L frame is even frame, in every even frame, the gap in short-term of the frame of the first half is for sending link control signaling, and the frame of later half is used for the 2nd signal equipment and sends reverse signaling.
8. the method communicating between signal equipment according to claim 1 and setting up, it is characterized in that, described link control signaling comprise object communication equipment address, the instruction of business type, the instruction of signaling type, individual exhale/group calling instruction, pairing long time the information type instruction of gap carrying, communication terminate mark.
9. the method communicating between a signal equipment and setting up, it is characterized in that, based on the frame structure that can mate different carrier bandwidth, comprise the equal gap in short-term of number and long time gap, one in short-term gap and one long time gap form time gap group, gap group when described frame structure comprises more than; Time described in gap group, gap is front in short-term, and time long, gap is rear, and described frame structure is taking gap in short-term as starting time slots; Described long time gap afterbody gap when being configured with protection, the radio frequency for signal equipment completes to receive/send conversion, offsets the space propagation delay between signal equipment, reduce due to asynchronous or multipath delay cause time gap between interference;
Step is as follows:
A) the first signal equipment is by gap bearing link control signal in short-term, and time long, gap sends business frame head;
B) the first signal equipment starts to send voice information or data information at next frame sending business frame head.
10. the method communicating between signal equipment according to claim 9 and setting up, it is characterized in that, configure the number of times repeating to send link control signaling, business frame head of the first signal equipment, first signal equipment repeats to send link control signaling, business frame head, after sending last business frame head, start to send business datum.
The method communicating between 11. signal equipments according to claim 10 and setting up, it is characterised in that, the first signal equipment periodically sends link control signaling by gap in short-term, adds conversation group in time for the signal equipment entered late during group calling.
Priority Applications (1)
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| CN106571900B (en) * | 2015-10-08 | 2019-09-06 | 上海朗帛通信技术有限公司 | A kind of wireless communications method and device of low delay |
| 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 |
| CN106788926B (en) * | 2015-11-25 | 2019-09-06 | 上海朗帛通信技术有限公司 | A kind of wireless communications method and device reducing network delay |
| CN105827384A (en) * | 2016-05-13 | 2016-08-03 | 黄剑锋 | Broadband wireless integrated data transmission method and system for unmanned aerial vehicle |
| CN105818961A (en) * | 2016-05-13 | 2016-08-03 | 黄剑锋 | Multi-antenna and fuselage integrated unmanned aerial vehicle |
| KR102427490B1 (en) * | 2017-11-24 | 2022-07-29 | 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 | Data transmission method, terminal device, and network device |
| CN109484430B (en) * | 2018-10-10 | 2020-04-28 | 同济大学 | Data framing method and device for high-speed magnetic levitation vehicle-mounted radio control unit |
| CN112262607B (en) * | 2018-12-26 | 2024-03-05 | Oppo广东移动通信有限公司 | DMRS configuration method, terminal equipment and network equipment |
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| US6504836B1 (en) * | 1997-10-27 | 2003-01-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Communication system |
| CN101212249A (en) * | 2006-12-29 | 2008-07-02 | 中兴通讯股份有限公司 | Method and system for improving uplink feedback capability of TDD system |
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| US6504836B1 (en) * | 1997-10-27 | 2003-01-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Communication system |
| CN101212249A (en) * | 2006-12-29 | 2008-07-02 | 中兴通讯股份有限公司 | Method and system for improving uplink feedback capability of TDD system |
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