CN101909328B - Method for realizing wireless access of DMR (Digital Mobile Radio) digital-trunked grouped data - Google Patents
Method for realizing wireless access of DMR (Digital Mobile Radio) digital-trunked grouped data Download PDFInfo
- Publication number
- CN101909328B CN101909328B CN2010102573989A CN201010257398A CN101909328B CN 101909328 B CN101909328 B CN 101909328B CN 2010102573989 A CN2010102573989 A CN 2010102573989A CN 201010257398 A CN201010257398 A CN 201010257398A CN 101909328 B CN101909328 B CN 101909328B
- Authority
- CN
- China
- Prior art keywords
- data
- channel
- travelling carriage
- access
- representes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000004044 response Effects 0.000 claims abstract description 49
- 230000011664 signaling Effects 0.000 claims abstract description 39
- 230000008569 process Effects 0.000 claims abstract description 8
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 239000002699 waste material Substances 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 23
- 238000012795 verification Methods 0.000 claims description 14
- 230000004048 modification Effects 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 5
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims description 4
- 230000001174 ascending effect Effects 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 1
- 108091006146 Channels Proteins 0.000 description 92
- 230000006854 communication Effects 0.000 description 18
- 238000004891 communication Methods 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 208000004350 Strabismus Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/08—Trunked mobile radio systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to a method for realizing wireless access of DMR (Digital Mobile Radio) digital-trunked grouped data, which is characterized by comprising the following steps of: firstly, newly adding a data access application signaling in the upstream access process of the grouped data of a mobile station; secondly, realizing access control by adding corresponding fields in the data heads of response data on the downstream channel control of a base station; and thirdly, adding reserved access control parameter fields of tail blocks of the data to be confirmed in the downstream data sending process of the base station, then making the base station carry out channel access control while accomplishing downstream data sending to reserve time slots required for the mobile station to send the response data, and setting a channel-occupied identification in a common announcing channel, thereby ensuring that the mobile station can occupy response data information returned by the channel in time. The invention improves the channel access success rate of the mobile station in the process of transmitting the grouped data, reduces time slot waste caused by collision when the grouped data is randomly accessed to the channel and improves the utilization rate of the channel.
Description
Technical field
The present invention relates to a kind of cluster wireless communication technology, especially a kind of digital mobile radio (DMR) Digital Clustering technology, concrete place of working a kind of DMR Digital Clustering packet data radio of saying so inserts implementation method.
Background technology
As everyone knows, along with the development of professional radio communication, the conventional analogue wireless traffic more and more can not satisfy user's demand, and the simulated operation pattern is no longer suitable under many circumstances.This just impels employs new technology to support professional radio necessary various basic and the business functions that strengthen, and the appearance of digital clustering communication system well addresses this problem.
Digital clustering communication system has been utilized current advanced person's digital technology, aspect command scheduling, is bringing into play crucial effect.It has adopted digital signalling mode, speech digital coding, makes the network altitude figureization, and the speed of continuing is fast, code capacity big, the reliability advantages of higher thereby have.Digital mobile radio (DMR) is a kind of digital cluster communication technical standard based on the TDMA technology, and it is that ETS association (ETSI) began to work out in 2004, is in the constantly perfect stage at present.DMR agreement simple and flexible, complete function and realizability are good, are applicable to the colony dispatching command system in each field.
The communication that a whole set of design specification of DMR can provide cluster, non-cluster and have speech, circuit data, short data information, Packet data service.Its major advantage is that compatibility is good, opening is good, the availability of frequency spectrum is high, power system capacity is big, and comparing other digital professional radio protocols also has special advantages.
DMR is as a kind of air interface specification of Digital Clustering; Its major technique characteristics have: adopt the TDMA technology based on two time slots; Each wireless carrier is that up or descending road all is divided into 2 time slots on time domain, every time slot 30ms; Can realize two-way communication, separate to each other.The base station down direction is launched continuously, and when not having business, up direction is idle.Its signaling characteristic and sequential relationship are as shown in Figure 1, the payload field of two 108bit about the interior pulse structure of time slot comprises, and the signaling territory of middle 48bit is used for transmitting with the embedding signaling synchronously, and travelling carriage is according to different synchronization data separation speech or data service.Public announcements channel (CACH) is merged by the partial data in continuous 4 time slots of down direction (preceding 24 bits of every time slot) and forms, and is used for broadcast channel management and low speed signaling information.2.5 milliseconds of protections are arranged at interval between the burst of up direction two time slots, the up-downgoing channel squints each other and is beneficial to duplex communication.
Main voice-over business of DMR and Packet Service.Voice service comprises individual calling, group calling, generally calls, broadcast & call etc., is carried by circuit mode, and Packet Service comprises IP Packet data service and short data service, is carried by packet mode.Packet data transmission among the DMR mainly adopts packet data protocol (Packet Data Protocol); Can transmit the IP datagram of random length; If data message length has surpassed the length that packet data protocol limits, then earlier raw information is divided into data slice and transmits again.These data slice can further be split as data block again; But the data block number that is divided is no more than 127 at most; Each data block has 1 or 2 data heads, and forward error correction (FEC) is set in piece carries out verification, and the data behind the piecemeal will take one to two time slot and transmit.The DMR packet data format is as shown in Figure 2.
The DMR grouped data is divided on kind not to be had the data of affirmation and needs to confirm data.Every kind of data all are made up of data head and data volume, and wherein last piece of data volume is called data tail piece, comprise the CRC check to whole segment information.The DMR packet data package can be carried the data of TCP and two kinds of protocol formats of UDP, and message transmission rate can be selected in 1/2 speed, 3/4 speed and full rate, and travelling carriage provides different data transfer modes according to different service kind and quality of service requirement.
Do not have the data service of affirmation and provide a kind of data, services of doing one's best; Lack the reliability guarantee, the transmission that needs to confirm data is then adopted automatic selection repeat requests (SARQ) error control agreement, is stopped to wait for that agreement and sliding window protocol ensure the reliable transmission of data.Need to confirm that data are divided into the need affirmation data and the reverse response data of forward direction on information type.Need to confirm that data are made up of a plurality of data blocks, each piece all comprises the sequence number of 7 bits and the CRC check sign indicating number of 9 bits, in the end in data block the CRC sign indicating number is set whole data cell is carried out verification.When employing stopped to wait for agreement, the travelling carriage of making a start is changed to 1 expression through confirmation information unit in the data head that will confirm data needed to receive end travelling carriage back response data.
After receipts end travelling carriage is received data, should send response message, through the full sign of the information in the data head of response data is changed to 1 designation data transmission completion based on reception condition.Receive the end travelling carriage information that receives is carried out CRC check, back-checking result in response message if having not through the data block of verification, then provides the tabulation of these data blocks, notifies the travelling carriage of making a start to retransmit.During the travelling carriage of making a start retransmits the error data piece; The full sign of information in the data head of need affirmation grouped data will reset to 0; Currently have error message to retransmit to indicate, retransmission processes will all data correct receive or retransmit timer expired after stop.
Frame synchronization.If successfully be synchronized to channel, travelling carriage just thinks on the channel it is the business of DMR so.If synchronously the time spent has surpassed threshold value and on also failing synchronously, travelling carriage just thinks on the channel not to be that DMR is professional.
Concerning the single-frequency channel, having no business on the channel is exactly idle condition; If business (no matter be DMR or other business) is arranged, channel all is considered to the state of having much to do; Concerning double frequency channel, when not having business on the descending channel, travelling carriage just thinks that inbound channel is an idle condition, and the business of non-DMR is arranged on descending channel, and travelling carriage just thinks that inbound channel is a busy condition.
When the base station required travelling carriage to respond, this travelling carriage was no matter channel is idle condition or busy state, as long as on distributed time slot, respond just passable.In addition, when travelling carriage began audio call, it was no matter channel is idle state or busy state for the business of audio call, and it is just passable to transmit.For other situation, need configuration user of mobile station rank, make them adopt the access strategy of different stage.
1, idle access strategy.Under this strategy, like the business (both can be that the DMR business also can be other business) that other are arranged on channel, just stop transmission, only ability access channel when channel is in idle condition.
2, coupling colour coding access strategy.When travelling carriage is found the professional colour coding on the channel and self mated, just do not seize channel; For the business (comprising that the DMR that is not own colour coding is professional) of other types, travelling carriage directly transmits.
3, access strategy by force.Travelling carriage no matter whether other business (no matter be DMR's or other business) is arranged on the channel directly transmits.
During the travelling carriage access channel, obtain the state of the busy channel of wanting according to the public announcements channel, can directly transmitting when carrying out by force access strategy, travelling carriage will adopt at random access way to send data.Take or channel indication can insert at random to detect and all will suspend transmission when channel has existed other professional but be designated as at channel status, and random wait a period of time and attempt resending data.
DMR adopts time slot A LOHA access mode on Radio Link is optimized.Therefore in wireless network, the shared channel of a plurality of travelling carriages adopts competitive way, visits the base station separately randomly, and the packet of transmission possibly produce collision and can not be by correct reception.Comprise destination address and source address in the up packet of travelling carriage, and when sending the starting timer, judge this packet base station of whether arriving safe and sound according in certain scheduled time, whether obtaining answer signal.Time slot A LOHA access mode adopts clock to unify user's data than pure ALOHA access mode and sends; Channel time is divided into discrete timeslice; The time length of a film is a transmitting time that frame is required; The user must send data in the starting position of a timeslice at every turn, has avoided the user to send the randomness of data so to a certain extent, has reduced the possibility that the data generation conflicts in the time slice interval.
But this simple access at random of time slot A LOHA and collision back wait for that the repeating transmission mode is lower to utilization rate of channel resources when frequently bumping.Because the packet of a need response is divided into the plurality of data block movement; When the up access of the The data of travelling carriage, may bump with the data of other travelling carriages, but because travelling carriage can't receive the downstream response data of base station simultaneously when sending data; So travelling carriage can't detect collision during data are sent; Time slot in this data packet transmission time has all been fallen by " waste " like this, and packet is long more, and the time slot of collision back waste is also many more; When a plurality of travelling carriages simultaneously during contention channel, channel utilization can seriously reduce.
Summary of the invention
The objective of the invention is the low problem of channel resource utilance, invent a kind of DMR Digital Clustering packet data radio that can improve channel utilization and insert implementation method to existing data access existence.
Technical scheme of the present invention is:
A kind of DMR Digital Clustering packet data radio inserts implementation method, it is characterized in that it may further comprise the steps:
At first, in the up access procedure of travelling carriage grouped data, newly-increased data insert the application signaling, are used for the channel occupancy application of transmitting grouped data; This application adopts access way at random; Because only taking the slot time of a frame, the application signaling transmits; Also just occur in the frame time even bump; Data with travelling carriage directly sends are compared, and have avoided colliding with the upstream data of other travelling carriages the situation of back " waste " multiframe; After success application; The base station will be through being provided with the channel occupancy sign and sending the access control signaling in the public announcements channel; In signaling, apply for the timeslot number reserved carrying out the reservation control of time slot according to travelling carriage, the travelling carriage of the corresponding time slot of channel being distributed to success application is special-purpose;
Secondly; In the down channel control of base station; Through in the data head of response data, adding and revise respective field and realize Access Control, after the base station receives the complete data packet that travelling carriage sends, the information of receiving is carried out verification based on the data segment in the packet; If the information complete verification passes through, then give the complete correct response of travelling carriage loopback information of making a start; If the data block through verification is arranged in the packet of receiving not; Then in response data, provide the tabulation of these data blocks; Notifying the travelling carriage of making a start to retransmit, carry out Access Control simultaneously, is that travelling carriage retransmits the time slot that the error data piece is reserved response; And the channel occupancy that in the public announcements channel, is provided with sign, notify other travelling carriages in the data re-transmission process, to forbid access channel;
The 3rd; Send in the data procedures at base station down; The tail piece of need being confirmed data increases the reserved access control parameter field, makes the base station when downlink data sends completion, carry out the channel access control, reserves required time slot for travelling carriage sends response data; And the channel occupancy sign is set, thereby guarantee travelling carriage busy channel back response data message in time in the public announcements channel.
Newly-increased data insert the application signaling: LB, PF, CSBKO, FID, RSVD, BLCK, DSK, TEL and SEL.
The field of in the data head of response data, adding has DSF, RTS, WT, Backoff, RBLCK and UP, and the field of modification has AEL and TEL.
Beneficial effect of the present invention:
The present invention has effectively improved the channel of travelling carriage in carrying out the packet data transmission process with less frame cost cost through time slot application mechanism and has inserted success rate; Reduced the time slot waste that grouped data is brought owing to collision when RACH; Improved the utilance of channel; When this method was carried out packet communication simultaneously and sent than the long data bag at many travelling carriages, improvement in performance was particularly evident.The present invention simultaneously also through suitably compressing the air interface message length, has saved air interface resource, and original communication process and data format has been improved, and has shortened the mutual time, has guaranteed many bags transmission continuity.
Description of drawings
Fig. 1 is existing DMR signaling characteristic and timing diagram.
Fig. 2 is existing DMR packet data format figure.
Fig. 3 is that Packet Data Channel of the present invention distributes sketch map.
Fig. 4 is a packet data transmission process sketch map of the present invention.
Fig. 5 is that the up reservation of travelling carriage of the present invention inserts the time slot map that sends grouped data.
Fig. 6 is travelling carriage reception downlink grouped data of the present invention and the time slot map that provides response.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Shown in Fig. 3-6.
A kind of DMR Digital Clustering packet data radio inserts implementation method, and it may further comprise the steps:
At first, in the up access procedure of travelling carriage grouped data, newly-increased data insert the application signaling, are used for the channel occupancy application of transmitting grouped data; This application adopts access way at random; Because only taking the slot time of a frame, the application signaling transmits; Also just occur in the frame time even bump; Data with travelling carriage directly sends are compared, and have avoided colliding with the upstream data of other travelling carriages the situation of back " waste " multiframe; After success application; The base station will be through being provided with the channel occupancy sign and sending the access control signaling in the public announcements channel; In signaling, apply for the timeslot number reserved carrying out the reservation control of time slot according to travelling carriage, the travelling carriage of the corresponding time slot of channel being distributed to success application is special-purpose;
Secondly; In the down channel control of base station; Realize Access Control through in the data head of response data, adding respective field, after the base station receives the complete data packet that travelling carriage sends, the information of receiving is carried out verification based on the data segment in the packet; If the information complete verification passes through, then give the complete correct response of travelling carriage loopback information of making a start; If the data block through verification is arranged in the packet of receiving not; Then in response data, provide the tabulation of these data blocks; Notifying the travelling carriage of making a start to retransmit, carry out Access Control simultaneously, is that travelling carriage retransmits the time slot that the error data piece is reserved response; And the channel occupancy that in the public announcements channel, is provided with sign, notify other travelling carriages in the data re-transmission process, to forbid access channel;
The 3rd; Send in the data procedures at base station down; The tail piece of need being confirmed data increases the reserved access control parameter field, makes the base station when downlink data sends completion, carry out the channel access control, reserves required time slot for travelling carriage sends response data; And the channel occupancy sign is set, thereby guarantee travelling carriage busy channel back response data message in time in the public announcements channel.
Details are as follows:
(1) newly-increased data insert the application signaling, are used for the channel occupancy application of uplink grouped data.This application adopts access way at random, in order to reserve access slot to the base station, to avoid the collision of a plurality of travelling carriages up emission simultaneously.After success application, the base station will be provided with the channel occupancy sign, supply the travelling carriage of success application special-purpose this channel.It is as shown in table 1 that data insert the application signaling structure:
(2) " data head of response data " descending in the DMR agreement revised; Increased access control information keeping on the basis of original repertoire, made this data head can accomplish the transmission with access control information of replying simultaneously upstream data through modification.The use occasion of this signaling has: 1. when idle, send to insert at random and invite; 2. the response travelling carriage inserts application at random, sends to reserve to insert and invites; 3. the reservation of the re-transmission of upstream data being replied and retransmitting inserts invites; 4. correctly replying of upstream data sent to insert at random simultaneously and invite.Design can be arranged to reserve access slot guarantee travelling carriage and in time retransmit error data under the situation that transfer of data is made mistakes like this; Time slot is arranged to random access time slot after also can be under the correct situation of transfer of data in time inciting somebody to action; So can not reply and message request, thereby save time of a frame as separately sending under original DMR mechanism.The data structure of the data head of amended response data is as shown in table 2:
Wherein DSF, RTS, WT, Backoff, RBLCK, UP are new field, and AEL, TEL are the modifications to former field.
(3) in up " data head of the grouped data that needs to confirm ", increase the field of the timeslot number of applying for that next data slice takies, guaranteed many bag transmission continuity.Its data structure is as shown in table 3:
Wherein NBF is a new field, and AEL, TEL are the modifications to former field.
(4) need of base station down being confirmed that the tail piece of data revises, increased the reserved access control parameter field, is that travelling carriage sends response data and reserves time slot,
Not have the tail piece of confirming grouped data be example to rate at full speed, and its data structure is as shown in table 4:
Wherein each subfield definition of LPARA field is as shown in table 5:
(5) for saving air interface resource, the present invention improves geocoding, and directly 24 bit address of use travelling carriage are not as the addressing address, and the event tag that is to use 12 bits is as the addressing address.Before block data communication began, the base station was a travelling carriage dispense event label, and to realize channel allocation, in communication process, event tag has been taken on the function of data communication address, and after data communication is accomplished, is deleted by the base station.
The implementation of improving back Packet Data Channel access is: send the access control signaling at Packet Data Channel when system is idle; Invite all or specific travelling carriage to send the Packet Service application; The respective field access conditions at random of indicating channel respectively in the signaling, insert retransmit in limited time and invite the travelling carriage that inserts.Travelling carriage is the required up access slot number of Packet Service application through sending the application signaling.The base station is through replying and the application of access control signaling response, and the timeslot number that the up reservation that distributes for the travelling carriage of success application inserts forbids that simultaneously other travelling carriages insert at random.Travelling carriage begins in the time slot of reservation, to send grouped data after receiving the response of base station, and in the grouped data head number of indication subsequent data blocks.
Send in the process of ascending packet data sheet at travelling carriage the base station, allows other travelling carriages to reserve access, keeps for more senior travelling carriage to carry out up access such as response access or base station to downlink grouped data.The travelling carriage that the descending backward channel signaling of base station through grouped channels sending data block suspends and sends, and reserves corresponding time slot and let and specify travelling carriage to carry out to insert, accomplish the former travelling carriage in back and continue the remaining data block of transmission.
After up data slice is received in the base station, transmission replied with the access control signaling confirm this data slice, indicate other travelling carriages to proceed to insert at random application simultaneously.
Below in conjunction with the packet data transmission process implementation method of the present invention is elaborated:
As shown in Figure 3, setting up data communication with travelling carriage 1 through base station and travelling carriage 2 is example, and its communication process is described below:
(1) travelling carriage 1 is set up packet communication to application signaling request and travelling carriage 2 that the base station application inserts at random; Application back mobile paging station 2 is received in the base station; Travelling carriage 2 is confirmed response to the base station loopback; The base station is received and then is respectively travelling carriage 1 and travelling carriage 2 allocated channels after this response, is communicating pair appointment event tag simultaneously, with as mutual mailing address.
(2) after channel was set up, the base station was sent to insert at random on down channel and is invited, and through the respective field that the public announcements channel is set channel is denoted as access state at random.This moment, travelling carriage 1 began to carry out packet communication with travelling carriage 2.
(3) concrete packet data transmission process is referring to Fig. 4; Travelling carriage 1 sends data to the base station earlier and inserts application before sending grouped data; Indicate this bag data the timeslot number that will take; After application is received in the base station, issue the access control signaling, thereby and the respective field through the public announcements channel is set channel is denoted as reserves access state and reserve its timeslot number of applying for for travelling carriage 1.After travelling carriage is received public announcements, begin to send grouped data, at this moment channel is that travelling carriage 1 " exclusively enjoys ", can not bump in the data transmission procedure.
(4) if verification made mistakes after the data of travelling carriage 1 were received in the base station; Then to travelling carriage 1 back response; And be it according to error situation and reserve response time slot that travelling carriage 1 receives that the response back retransmits error message according to the error data piece that marks in the response in reserving time slot; If the data of travelling carriage transmission are all through verification, the base station is then to the correct response of travelling carriage 1 echo back data reception, and the respective field that the public announcements channel is set is denoted as access state at random with channel, invites all travelling carriages to insert at random.
(5) transmit the grouped data of travelling carriage 1 base station to travelling carriage 2; After sending completion, the access control signaling can be sent in the base station, reserves time slot so that travelling carriage 2 sends response messages; After the response message of receiving travelling carriage 2; It is transmitted to travelling carriage 1, and the respective field that the public announcements channel is set simultaneously is denoted as access state at random with channel, invites all travelling carriages to insert at random once more.
(6) behind the sign off, the release that channel connects can also can initiatively discharge channel by system by Mobile Origination and realize.
Channel access slot figure below in conjunction with Packet Service further specifies, and is as shown in Figure 5, in the up access instance of travelling carriage; The grouped channels that distributes is 1 time slot of every frame, and under the channel clear, the base station is sent to insert at random to all travelling carriages and invited; At this moment certain travelling carriage will transmit the grouped data that needs affirmation, and these data will take 3 time slots and transmit, at first; Travelling carriage elder generation sends data and inserts the application signaling, and this signaling adopts access way at random, sends after the base station is received and applied for and replys and access control; 3 time slots are subsequently kept for this travelling carriage, and travelling carriage begins to reserve up access from next frame after receiving this access control signaling; At this moment other travelling carriages are forbidden access channel, and whole channel " exclusively enjoys " for this travelling carriage.Behind 3 time slots, the travelling carriage grouped data is sent and is finished, and the base station is recovered again to send to insert at random and invited.
When travelling carriage transmission downlink grouped data, channel is distributed unitedly by it, and is as shown in Figure 6; The grouped data that the need that travelling carriage transmitted are confirmed accounts for 3 time slots; The data volume of preceding two time slots difference transmitting grouped data head and full rate grouped data, at this moment channel is denoted as access state at random, and travelling carriage still can insert at random; After preceding two blocks of data have sent; The base station is that the travelling carriage that is communicating with is reserved 1 time slots through the reserved access control parameter field in the tail piece that the packet count that needs affirmation is set, and travelling carriage can send the data head of response data after receiving data tail piece in the time slot that the base station is reserved; Time slot subsequently, base station recover again to send to insert at random invites.
The present invention does not relate to all identical with the prior art prior art that maybe can adopt of part and realizes.
Claims (2)
1. a DMR Digital Clustering packet data radio inserts implementation method, it is characterized in that it may further comprise the steps:
At first, in the up access procedure of travelling carriage grouped data, newly-increased data insert the application signaling, are used for the channel occupancy application of transmitting grouped data; This application adopts access way at random; Because the application signaling only takies the time of a frame and transmits; Also just occur in the frame time even bump, compare, avoided colliding the situation of back " waste " multiframe with the upstream data of other travelling carriages with the data that travelling carriage directly sends; After success application; The base station will be through being provided with the channel occupancy sign and sending the access control signaling in the public announcements channel; In signaling, apply for the timeslot number reserved carrying out the reservation control of time slot according to travelling carriage, the travelling carriage of the corresponding time slot of channel being distributed to success application is special-purpose;
Secondly; In the down channel control of base station; Through in the data head of response data, adding and revise field and realize access control, after the base station receives the complete data packet that travelling carriage sends, the information of receiving is carried out verification according to the data segment in the packet; If the information complete verification passes through, then give the complete correct response of travelling carriage loopback information of making a start; If the data block through verification is arranged in the packet of receiving not; Then in response data, provide the tabulation of these data blocks; Notify the travelling carriage of making a start to retransmit, carry out access control simultaneously, reserve corresponding time slot for travelling carriage retransmits the error data piece; And the channel occupancy that in the public announcements channel, is provided with sign, notify other travelling carriages in the data re-transmission process, to forbid access channel; The field of described interpolation comprises DSF, RTS, WT, Backoff, RBLCK and UP, and the field of modification comprises AEL and TEL; Described field DSF representes to invite all business to insert, invite the access at random that inserts, invites non-group-calling service at random of group-calling service at random or allows ascending packet data to reserve access; Described field RTS represent forward direction speed by transmit leg decision, forward direction speed is maximum can support full speed degree, forward direction speed maximum can support 1/2 speed or forward speed maximum can support 3/4 speed; Described field WT representes repeating transmission time limit of inserting at random, and promptly travelling carriage is received the quantity of the tdma frame that response is waited for, does not overtimely receive that response then retransmits; Described field Backoff representes the basic frame length definition of ALOHA; Described field RBLCK representes the up access slot number that distributes, and is only effective when DSF=11; Described field UP representes to allow to insert at random the grade of travelling carriage; Described field AEL representes to forbid that all users insert, allow all users to insert or insert user's event tag at random at random; Described field TEL representes invalid response, meaningless or purpose user's event tag;
The 3rd; Send in the data procedures at base station down; The tail piece of need being confirmed data increases the reserved access control parameter field, makes the base station when downlink data sends completion, carry out the channel access control, reserves required time slot for travelling carriage sends response data; And the channel occupancy sign is set, thereby guarantee travelling carriage busy channel back response data message in time in the public announcements channel.
2. DMR Digital Clustering packet data radio according to claim 1 inserts implementation method, it is characterized in that the data that increase newly insert the application signaling and comprise: LB, PF, CSBKO, FID, RSVD, BLCK, DSK, TEL and sel field; Described field LB representes single hop control signaling piece signaling frame; Described field PF representes to be left use in the future; Described field CSBKO representes to control signaling piece function code; Described field FID representes the system features identification code; Described field RSVD representes to be left use in the future; The data block number that the data block number that described field BLCK representes to apply for maybe can receive; Described field DSK represent application send data block, application receive data block, application recipient travelling carriage repeat to send confirm, whether inspection purpose travelling carriage on the throne, application repeated to send when group was professional, application resets and connect or application discharges and connects; Described field TEL representes the event tag of purpose travelling carriage; Described field SEL representes the event tag of source travelling carriage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102573989A CN101909328B (en) | 2010-08-19 | 2010-08-19 | Method for realizing wireless access of DMR (Digital Mobile Radio) digital-trunked grouped data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102573989A CN101909328B (en) | 2010-08-19 | 2010-08-19 | Method for realizing wireless access of DMR (Digital Mobile Radio) digital-trunked grouped data |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101909328A CN101909328A (en) | 2010-12-08 |
| CN101909328B true CN101909328B (en) | 2012-08-08 |
Family
ID=43264613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102573989A Expired - Fee Related CN101909328B (en) | 2010-08-19 | 2010-08-19 | Method for realizing wireless access of DMR (Digital Mobile Radio) digital-trunked grouped data |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101909328B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103582032B (en) * | 2012-07-31 | 2016-06-08 | 福建科立讯电子有限公司 | A kind of realize the wireless voice of multiple priority levels business and the method for data corresponding |
| CN103402030B (en) * | 2013-08-13 | 2016-02-03 | 海能达通信股份有限公司 | A kind of method, terminal and intermediate station processing Call Collision |
| CN105246160B (en) * | 2015-10-13 | 2019-03-05 | 海能达通信股份有限公司 | Method, apparatus, system and the communication equipment that data upload in private network communication |
| CN107241810B (en) * | 2016-03-29 | 2020-04-24 | 北京信威通信技术股份有限公司 | Scheduling method and sending method of uplink data, base station and user equipment |
| CN107388480B (en) * | 2017-06-26 | 2020-07-31 | 珠海格力电器股份有限公司 | Air conditioner control method and device and air conditioner system |
| WO2019227365A1 (en) * | 2018-05-31 | 2019-12-05 | 海能达通信股份有限公司 | Response time slot reservation method, system, and device |
| CN108777881B (en) * | 2018-05-31 | 2021-01-19 | 海能达通信股份有限公司 | Response time slot reservation method, system and equipment |
| CN109067796A (en) * | 2018-09-27 | 2018-12-21 | 北京粉笔未来科技有限公司 | A kind of data transmission method and device |
| CN110139377B (en) * | 2019-03-20 | 2021-06-22 | 北京中兴高达通信技术有限公司 | Information processing method and device, storage medium and electronic device |
| CN112653544B (en) * | 2020-12-17 | 2022-06-24 | 海能达通信股份有限公司 | Service data transmission method, device and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1430424A (en) * | 2001-12-31 | 2003-07-16 | 深圳市中兴通讯股份有限公司上海第二研究所 | Method of realizing group data reliable transmission in mobile communication system |
| CN1463097A (en) * | 2003-05-13 | 2003-12-24 | 武汉汉网高技术有限公司 | Random access method utilized in orthographic frequency division multiple access (OFDM) system |
| EP2217019A1 (en) * | 2008-09-28 | 2010-08-11 | Shenzhen HYT Science & Technology Co, Ltd | Communication terminal, communication system and realization method for dmr special network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000062435A1 (en) * | 1999-04-12 | 2000-10-19 | Samsung Electronics Co. Ltd | Method for controlling gated transmission of dedicated channel in w-cdma communication system |
-
2010
- 2010-08-19 CN CN2010102573989A patent/CN101909328B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1430424A (en) * | 2001-12-31 | 2003-07-16 | 深圳市中兴通讯股份有限公司上海第二研究所 | Method of realizing group data reliable transmission in mobile communication system |
| CN1463097A (en) * | 2003-05-13 | 2003-12-24 | 武汉汉网高技术有限公司 | Random access method utilized in orthographic frequency division multiple access (OFDM) system |
| EP2217019A1 (en) * | 2008-09-28 | 2010-08-11 | Shenzhen HYT Science & Technology Co, Ltd | Communication terminal, communication system and realization method for dmr special network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101909328A (en) | 2010-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101909328B (en) | Method for realizing wireless access of DMR (Digital Mobile Radio) digital-trunked grouped data | |
| CN107645774B (en) | Confirmation method for scheduling PC5 port resources in V2X network | |
| CN101421997B (en) | Method and apparatus for discontinuously receiving packet in a mobile communication system | |
| CN102202408B (en) | Method, system and device for scheduling multiple subframes | |
| CN101610260B (en) | Communication method for wireless LANS | |
| CN100514907C (en) | Communication apparatus, communication method, and communication system | |
| CN102123399B (en) | Scheduling request method and device | |
| CN103260251B (en) | Data transmission method, base station and subscriber equipment | |
| EP2537386B1 (en) | Contention based access optimization | |
| CN101627587B (en) | Adapting transmission and reception on time in packet based cellular systems | |
| CN101766012B (en) | Scheduling of voice over IP data | |
| CN102143596B (en) | Wireless resource scheduling method and wireless resource scheduling system | |
| CN103001749B (en) | Transmit the method for data, internet of things equipment and network equipment | |
| CN101999219A (en) | Method and apparatus of processing random access | |
| CN103036657B (en) | Method and device for data transmission | |
| CN101616443A (en) | Message treatment method, device and system | |
| CN100417249C (en) | Upward auess-in method and apparatus | |
| CN103648175A (en) | Multi-subframe scheduling method, multi-subframe scheduling and equipment | |
| US10135580B2 (en) | Apparatus and method for retransmission in a wireless communication system | |
| CN102355336A (en) | Buffer status report (BSR) triggering method, device and user equipment | |
| US9167599B2 (en) | Channel structure for non-contention based windows and contention based random access requests | |
| CN109151957B (en) | Communication method, communication device and communication equipment of wireless local area network | |
| WO2009152673A1 (en) | A method and a system for implementing the uplink hybrid automatic retransmission request | |
| EP4104343A1 (en) | Telecommunications apparatus and methods | |
| CN107534525A (en) | A kind of data transmission method for uplink and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20190819 |