CN1305322A - Improvement of related data transmission - Google Patents
Improvement of related data transmission Download PDFInfo
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- CN1305322A CN1305322A CN 00135058 CN00135058A CN1305322A CN 1305322 A CN1305322 A CN 1305322A CN 00135058 CN00135058 CN 00135058 CN 00135058 A CN00135058 A CN 00135058A CN 1305322 A CN1305322 A CN 1305322A
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Abstract
A mobile phone network for processing dada grouping radio service commonly, including a base station 2 and a group of mobile phone M1 to M8. The base station 2 includes a control unit for generating a series of data groups, data groups sent to all of mobile phone M1 to M8 along with a communal down chain. Each of data group comprises a first mark segment with a mark of up-chain for identifying a first selected moveable unit, using for polling the moveable unit to send a data group to the base station along with the communal down chain. The mark segment also includes a mark of up-chain for identifying a second selected moveable unit, and a mark of the second assistant up-chain channel and time slot.
Description
The present invention relates to data transmission system, particularly relate to the mobile telephone network and base station of in this type systematic, using and the satellite station that adopt this type systematic.
In mobile telephone network, it is the different regions services that a plurality of base stations are arranged.Each base station is arranged and the interior many mobile phone communications in relevant area.
Communicating by letter of base station and mobile phone used the channel frequency of dispersed number.Mobile phone is divided into octette usually, and the base station sends signal along a common downlink channel all members in group, and the common downlink channel has unique frequency of distributing to this group.The base station is along the signal of each mobile phone in the uplink channel reception group, and this uplink channel has different unique frequency of distributing to this group.
During operation, the base station is with the form of series of data packets, along common downlink channel all mobile phones transmission data to every group.Each packet comprises two parts.First is called head, it comprises the ID sign indicating number of the mobile unit of selecting in the identification group, Uplink State Flag (USF) with this mobile phone, to trigger this mobile phone the base station is returned in one packet, second portion comprises the data payload that this mobile phone will be downloaded and use when needed.Head is " transparent ", and in other words, it can be read by all phones in the group.Payload is encrypted, and can only be read and be downloaded by the phone that its ID is included in the head.Packet continues 20ms usually, and when certain particular telephone is downloaded data grouping of the Uplink State Flag that comprises it, this phone is beamed back the base station to a packet along common uplink channel, soon as answer after receiving this packet.
In each cycle of eight data series of packets that send in the base station, if each mobile phone receives only a Uplink State Flag (promptly polled), so, it can only be sent to the base station to data in the time by a 20ms in per eight.
An object of the present invention is to provide improved poll rate.
According to one aspect of the present invention, provide a kind of data transmission system, it includes the base station of a radio transmitter and a receiver, and a plurality of satellite stations that a radio transmitter and a receiver are respectively arranged, the transmitter of base station and the receiver of satellite station all are tuned to same downlink channel, the transmitter of satellite and the receiver of base station all are tuned to a common uplink channel and at least one auxiliary uplink channel, the base station comprises the generation series of data packets and they is sent to the control device of each satellite, each packet comprises a header section and a pay(useful) load section, the header section major part is reconfigurable and length, also comprise first Uplink State Flag by the first selected satellite identification, when being received by the first selected satellite, this Status Flag makes this satellite that one packet is beamed back the base station along uplink channel separately, second Uplink State Flag that also comprises at least one identification second selected satellite, the sign of the second selected satellite and described auxiliary uplink channel and time time slot coupling, make the described second selected satellite that one packet is beamed back the base station along described auxiliary uplink channel separately in described time time slot, take this to realize many polls of described each satellite with the individual data grouping.
According to another aspect of the present invention, provide a kind of base station, it has a radio transmitter to communicate by letter with a plurality of satellite stations with a receiver, transmitter is tuned to a predetermined downlink channel, and receiver is tuned to a predetermined uplink channel and at least one auxiliary uplink channel, the base station comprises the generation series of data packets and they is sent to the control device of each satellite station, each packet comprises a header section and a pay(useful) load section, header section is made up of reconfigurable and length, and comprise by first Uplink State Flag of first selected satellite station identification and second Uplink State Flag of at least one identification second selected satellite station, the many polls with described each satellite station of individual data grouping realization are taken this in the sign of the second selected satellite station and described auxiliary uplink channel and time time slot coupling.
According to one side more of the present invention, provide a kind of uniquely identified satellite station that has, it has a radio transmitter and a receiver, receiver is tuned to a predetermined downlink channel, and transmitter is tuned to a predetermined uplink channel and at least one auxiliary uplink channel, satellite station comprises the control device that receives series of data packets from the base station, each packet comprises a header section and a pay(useful) load section, header section is made up of reconfigurable and length, and comprise first Uplink State Flag that has the first selected satellite station sign, if should identify consistent with described unique identification, then this Status Flag can make control device along predetermined uplink channel the base station be beamed back in one packet, also comprise second Uplink State Flag that at least one has the second selected satellite station sign, the sign of the second selected satellite station and described auxiliary uplink channel and time time slot coupling, if should identify consistent with described unique identification, then this Status Flag can make control device in described time time slot the base station be beamed back in a packet along described auxiliary uplink channel, takes this with the individual data grouping described satellite station to be carried out many polls.
Referring now to accompanying drawing, illustrate and embody a kind of mobile telephone network of the present invention, wherein:
Fig. 1 is the base station block diagram with a plurality of mobile phone communications; With
Fig. 2 is an exploded view, and the composition of a data grouping is described.
As shown in Figure 1, base station 2 comprises radio transmitter 4 and receiver 6, is used for along frequency f
2Downlink channel, data are sent to octadic satellite or mobile phone M1 to M8 simultaneously, and mainly along frequency f
1Uplink channel receive data.
The signal that is produced and sent by base station 2 by control unit 8 comprises series of data packets, and the duration of each packet is 20ms.
As shown in Figure 2, each packet comprises head H and pay(useful) load P.Head comprises the pattern time slot (mode slot) 10 that the back also will be described in more detail, primary uplink Status Flag time slot 12, it for example contains the Uplink State Flag USF2 of mobile unit M2, and secondary Uplink State Flag time slot (state flag slot) 14, it for example contains the Uplink State Flag USF3 of mobile unit M3.Time time slot (time slot) 16 and frequency time slot (frequency slot) 18 are followed in the back of secondary Uplink State Flag time slot, and frequency time slot 18 for example defines frequency f
3Auxiliary uplink channel in time time slot T3.Then be Payload P then.
During operation, when mobile phone M2 received this packet, it responded Uplink State Flag USF2, along frequency f
1The acquiescence uplink channel, send the grouping of data.When mobile phone M3 received identical packet, it responded Uplink State Flag USF3, along frequency f
3Auxiliary uplink channel, time slot TS at the appointed time
3Send a data grouping.
Like this, the grouping of two data can be received from two mobile phones in the base station, and the same packet that this this two mobile phone response downlink channel send sends.Reach this situation, must sacrifice the duration of Payload P and increase duration of head H, because to giving fixed system, standard code, all each packets all should have the identical duration.
Though auxiliary uplink channel has stipulated to have frequency f
3, but should see that can there be other channels of some different frequencies the base station, can be used as auxiliary uplink channel.Therefore, different auxiliary uplink channels can be chosen to different occasions according to availability in the base station.
Also have, though each shown packet comprises secondary Uplink State Flag, it also can comprise the 3rd or more Uplink State Flags, and each follows its time and time slot frequency.But the Uplink State Flag that this class increases can reduce the duration of Payload, and produces returning of successively decreasing gradually.
After this above-mentioned polling method will be called many polls.
To real-time (RT) Traffic Channel, so simple poll than superior based on the access of contention, is because access delay is come to a conclusion really.During poll, the time-delay of access is determined, and in the access based on contention, access delay is at random, thereby more disruptive to the RT business.But along with the increase of system loading, polling algorithm must be sought channel space, so that hold the affirmative acknowledgement (ACK) of polled mobile unit.And in access, having the common storage pond of the available channel of knowing based on contention, each mobile unit can contention.
Based on contention:
Along with the increase of load, the number of the mobile unit of standby (not using/multiplexing) channel number that contention is successively decreased also increases.This means that the probability of failure that obtains a channel will increase, and cause interrupt call-speech space along with the increase of load.Obtain the responsibility of channel and transfer to mobile unit, the mobile unit of promptly achieving success is born.
Based on poll:
Along with the increase of load, problem singly is not a contention standby time time slot, and will find them fast enough, so that give mobile unit channel.Can not find the effect of channel and be the same based on the situation that contention ran into.The responsibility of obtaining channel is by base station controller (BSC), and the BSC that promptly achieves success bears.
In order to overcome the transition behavior that polling algorithm solves to be needed when load increases, we take to utilize the fuzzy technology of following general rule:
If?load(t)is?low?then
Use(Standard?GPRS?Polling)；
Else?if?load(t)?is?medium?then
Use(Multi?Polling)；
Else?if?load(t)?is?high?then
Use(Probabilistic?Multi?Polling)；End?If
Pattern time slot 10 in head is the identification that is used for polled mobile unit, and the pattern time slot 10 that adopt now the base station is chosen wantonly.
When adopting GPRS (the General Packet Radio Service) poll of standard-and GPRS MAC (the General Packet Radio Service MediumAccess Control) head of uses standard is to the mobile unit poll, and each time time slot can be preempted by two mobile units at most.
When adopting many polls-for obtaining multiplexing benefit, the GPRS MAC head of standard does not provide enough flexibilities.Therefore, many polls allow with special-purpose, the answer channel of appointment in the MAC head, and poll is more than a mobile unit in each time time slot.
When near the cell load limit, adopt the many polls of probability.In this technology, for the mobile unit that makes answer inserts remaining channel with good way, we adopt two kinds of statistical methods.
1. the statistical property of speech, promptly its exponential damping characteristic provides, and the probability (P) that certain channel is activating when time t is by P (t)=e
-β tProvide, and at time t still at the probability (Q) that activates by Q (t)=1-e
-β tProvide.Here β is
2. then to answering the channel application contention, promptly each mobile unit is sought space (time time slot) in the answer channel of different frequency, then with other mobile unit contentions.
In first kind of situation, the elapsed time is meant that certain calls out in order to select a channel that is used to answer in time in the stage of activation.Like this, the channel that is used to answer under high-load condition is to take from those in that to activate the time in stage the longest, thereby most probable becomes the channel that does not activate the soonest.In second kind of situation, the time time slot that each mobile unit is answered combines, and allows answer channel of selecting by above-mentioned same way as of each mobile unit contention.In this way, can think that along with the increase of load, poll will deteriorate significantly, and alternate channel becomes, and supply falls short of demand.
In second kind of situation, for flexibility, some is determined to discuss and must abandon.But, determine that opinion is not whole eliminatings, because it is different now just to provide the mode of answering the used filling channel of channel.System is not that the mobile unit that isolatedly a channel is offered appointment is used for answering, and provides one group of channel, and mobile unit can be with wherein any is answered.
In GPRS/EDGE (General Packet Radio Service/Enhanced DataRates for GPRS) standard, packet control confirms that (Packet ControlAcknowledgement) is that (Radio Resource, RR) message sends the response radio frequency resource.RR message is the signal that sends to mobile unit by the Payload type field in the MAC head is made as control.When wishing that mobile unit is answered system with a data grouping control confirmation signal, the RRBP in the available MAC head (Relative Reserve BlockPeriod) field indication mobile unit.(Supplementary Polling, SP) bit is indicated the validity of this field to replenish poll.
When the mobile unit request voice service of GPRS/EDGE, if they are in silent period, then they are put in the group polling group, if they are in the activation stage, then give a channel.This class mobile unit in these cases can interested RR message, when activating, is redistributing of their channels.The design of many polls head is (referring to above-mentioned answer coding one joint) that allows to this in answering field.In view of the above, when more than a mobile unit in a preset time time slot when polled, RRBP and SP field can be removed from the head of many polls.
Provide CSN1 (the Concrete Syntax Notation 1) coding of many polls head below.The length of head depends in the head numerical value of beginning dibit, because select subsequently MAC structure by their numerical value.Also to provide the definition of this structure below.
To the structure of single mobile unit, the MAC head is identical just as in standard GPRS MAC head, as long as it comprises SP, RRBP and Payload the type field.
To structure subsequently, the Payload Type of a retention criteria head.Remove the reason of RelativeReserve Block Period (RRBP) and Supplementary Polling (SP) bit, provide in the above.But must comprise Payload Type, because it can send the signal from dynamic response Radio Resource (RR) control messages.
The length of poll code depends on polled mobile unit number.To this explanation in the above poll code one joint provide.The length of answering field also depends on polled mobile unit number.Answer the explanation of the structure of field, provide at answer coding one joint.
The possible code that takies pattern time slot 10 in the head is as follows:
<00:Single?Mobile?struct>
<01:Two?Mobile?struct>
<10:Three?Mobile?struct>
<11:Four?Mobile?struct>；
The code that takies time slot 12 is as follows:
<Single?Mobile?structure>
<POLLING?CODE:bit(3)>
<S/P:bit(1)>
<RRBP:bit(2)>
<PAYLOAD?TYPE:bit(2)>
<Spare?Bits>；
See that polled mobile unit is two, three or four actually, takies time slot 14 by one of following three kinds of options:
<Two?Mobile?struct>∷=
<POLLING?CODE:bit(5)>
<PAYLOAD?TYPE:bit(2)>
{<Reply?Field:Reply?Field?struct>*2}
<Spare?Bits>；
<Tree?Mobile?struct>∷=
<POLLING?CODE:bit(6)>
<PAYLOAD?TYPE:bit(2)>
{<Reply?Field:Reply?Field?struct>*3}
<Spare?Bits>；
<Four?Mobile?struct>∷=
<POLLING?CODE:bit(7)>
<PAYLOAD?TYPE:bit(2)>
{<Reply?Field:Reply?Field?struct>*4}
<Spare?Bits>；
At last, when using two, three or during four option, the time slot 16 in the head and 18 is by following every taking:
<Reply?Field?struct>∷=
<USF?NEW:bit(3)>
<REPLY?TS:bit(3)>
<REPLY?FN∷bit(2)>
Claims (18)
1. data transmission system, comprise a base station that a radio transmitter and a receiver are arranged, with a plurality of satellite stations, each has a radio transmitter and a receiver, the transmitter of base station and the receiver of each satellite station all are tuned to same downlink channel, the transmitter of each satellite station and the receiver of base station all are tuned to a common uplink channel and at least one auxiliary uplink channel, the base station comprises the generation series of data packets and they is sent to the control device of satellite station, each packet comprises header section and pay(useful) load section, header section is made up of reconfigurable and length, also comprise first Uplink State Flag by the identification of the first selected satellite station, when being received by the first selected satellite station, this Status Flag makes this satellite station that a data grouping is beamed back the base station along uplink channel separately, second Uplink State Flag that also comprises at least one identification second selected satellite station, the sign of the second selected satellite and described auxiliary uplink channel and time time slot coupling, make the described second selected satellite station that a data grouping is beamed back the base station along described auxiliary uplink channel separately in described time time slot, take this to realize many polls of described satellite station with the individual data grouping.
2. according to the data transmission system of claim 1, control device is wherein wanted and can be inserted a code in the head of each described packet, the indication of this code requires actually is single poll, many polls, or many polls of probability, and wherein each described satellite station will make self to adapt to this requirement after receiving this code.
3. according to the data transmission system of claim 2, wherein, when the code that comprises when head is indicated single poll, control device is wanted and can the Payload type code of the RRBP code of the S/P code of the poll code of 3 bits and 1 bit and 2 bits and 2 bits be inserted in the head of each described packet.
4. according to the data transmission system of claim 2, wherein, when the code that comprises when the head of each packet was indicated many polls, control device was wanted and can and be answered field the Payload type code of poll code, 2 bits: answer the field structure code, insert in the head.
5. according to the data transmission system of claim 4, wherein, when number is the satellite of x when just polled, the length of poll code is (x+3) bit, and answers the length of field: answering structural code is the x bit.
6. according to the data transmission system of claim 5, control device is wherein wanted to dispose head, makes the time slot and the answering frequency of 2 bits response time of the USF that answers field structure and comprise 3 bits, 2 bits.
7. according to the data transmission system of arbitrary money in the claim of front, wherein each described satellite comprises a mobile phone, and described up link and downlink channel form the part of radio telephone network.
8. base station that a radio transmitter of communicating by letter with a plurality of satellite stations and a receiver are arranged, transmitter is tuned to a predetermined downlink channel, and receiver is tuned to a predetermined uplink channel and at least one auxiliary uplink channel, the base station comprises the generation series of data packets and they is sent to the control device of each satellite station, each packet comprises header section and pay(useful) load section, header section is made up of reconfigurable and length, and comprise by first Uplink State Flag of first selected satellite station identification and second Uplink State Flag of at least one identification second selected satellite station, the many polls with described each satellite station of individual data grouping realization are taken this in the sign of the second selected satellite station and described auxiliary uplink channel and time time slot coupling.
9. according to the base station of claim 8, control device is wherein wanted and can be inserted a code in the head of each described packet, and this code indication requires actually is single poll, many polls, or many polls of probability.
10. according to the base station of claim 9, wherein, when the code that comprises when head is indicated single poll, control device is wanted and can the Payload type code of the RRBP code of the S/P code of the poll code of 3 bits and 1 bit and 2 bits and 2 bits be inserted in the head of each described packet.
11. base station according to claim 9, wherein, when the code that comprises when the head of each packet was indicated many polls, control device was wanted and can and be answered field the Payload type code of poll code, 2 bits: answer the field structure code, insert in the head.
12. according to the base station of claim 11, wherein, when number is the satellite of x when just polled, the length of poll code is (x+3) bit, and answers the length of field: answering structural code is the x bit.
13. according to the base station of claim 12, control device is wherein wanted to dispose head, makes the time slot and the answering frequency of 2 bits response time of the USF that answers field structure and comprise 3 bits, 2 bits.
14. a telephone network comprises the base station according to one of claim 8 to 13.
15. one kind has the uniquely identified satellite station, it has a radio transmitter and a receiver, receiver is tuned to a predetermined downlink channel, and transmitter is tuned to a predetermined uplink channel and at least one auxiliary uplink channel, satellite station comprises the control device that receives series of data packets from the base station, each packet comprises header section and pay(useful) load section, header section is made up of reconfigurable and length, and comprise first Uplink State Flag that has the first selected satellite station sign, if should identify consistent with described unique identification, then this Status Flag can make control device along predetermined uplink channel the base station be beamed back in a data grouping, also comprise second Uplink State Flag that at least one has the second selected satellite station sign, the sign of the second selected satellite station and described auxiliary uplink channel and time time slot coupling, if should identify consistent with described unique identification, then this Status Flag can make control device in described time time slot the base station be beamed back in a data grouping along described auxiliary uplink channel, takes this to realize with the individual data grouping many polls of described satellite station.
16. satellite station according to claim 15, wherein the head of each described packet comprises a code, the indication of this code requires actually is single poll, many polls, or many polls of probability, and control device wherein makes self to adapt to this requirement after receiving this code.
17. satellite station according to claim 16, wherein, when the code that comprises when head is indicated single poll, control device is wanted and can the Payload type code of the RRBP code of the S/P code of the poll code of 3 bits and 1 bit and 2 bits and 2 bits be inserted in the head of each described packet.
18. a mobile phone comprises the satellite station according to one of claim 14 to 16.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99309993 | 1999-12-10 | ||
| EP99309993.6 | 1999-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1305322A true CN1305322A (en) | 2001-07-25 |
Family
ID=8241805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00135058 Pending CN1305322A (en) | 1999-12-10 | 2000-12-07 | Improvement of related data transmission |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP2001211483A (en) |
| KR (1) | KR20010062306A (en) |
| CN (1) | CN1305322A (en) |
| AU (1) | AU748660B2 (en) |
| BR (1) | BR0005748A (en) |
| CA (1) | CA2325612A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101341515B1 (en) | 2007-06-18 | 2013-12-16 | 엘지전자 주식회사 | Method of updating repeatedly-transmitted information in wireless communicaiton system |
| KR101486352B1 (en) | 2007-06-18 | 2015-01-26 | 엘지전자 주식회사 | Method of controlling uplink synchronization state at a user equipment in a mobile communication system |
| US9008006B2 (en) | 2007-08-10 | 2015-04-14 | Lg Electronics Inc. | Random access method for multimedia broadcast multicast service(MBMS) |
| KR101490253B1 (en) | 2007-08-10 | 2015-02-05 | 엘지전자 주식회사 | Method of transmitting and receiving control information in a wireless communication system |
| KR20090016431A (en) | 2007-08-10 | 2009-02-13 | 엘지전자 주식회사 | A method of performing channel quality report in a wireless communication system |
| KR101392697B1 (en) | 2007-08-10 | 2014-05-19 | 엘지전자 주식회사 | Method for detecting security error in mobile telecommunications system and device of mobile telecommunications |
| JP4950338B2 (en) | 2007-09-13 | 2012-06-13 | エルジー エレクトロニクス インコーポレイティド | Radio resource allocation method in radio communication system |
| KR101513033B1 (en) | 2007-09-18 | 2015-04-17 | 엘지전자 주식회사 | A method for qos guarantees in a multilayer structure |
| KR101591824B1 (en) | 2007-09-18 | 2016-02-04 | 엘지전자 주식회사 | Method of performing polling procedure in a wireless communication system |
| EP3410623B1 (en) | 2008-01-31 | 2021-07-28 | LG Electronics Inc. | Method for sending status information in mobile telecommunications system and receiver of mobile telecommunications |
| WO2009096731A2 (en) | 2008-01-31 | 2009-08-06 | Lg Electronics Inc. | Method for signaling back-off information in random access |
| KR101594359B1 (en) | 2008-01-31 | 2016-02-16 | 엘지전자 주식회사 | Method of signaling back-off information in random access |
| KR101163275B1 (en) | 2008-03-17 | 2012-07-05 | 엘지전자 주식회사 | Method for transmitting pdcp status report |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI104610B (en) * | 1997-03-27 | 2000-02-29 | Nokia Networks Oy | Allocation of a control channel in a packet radio network |
| FR2771885B1 (en) * | 1997-11-28 | 2000-03-24 | Alsthom Cge Alcatel | METHOD FOR ALLOCATING TRANSMISSION CHANNELS TO A MOBILE STATION, IN PACKET MODE |
-
2000
- 2000-11-09 CA CA 2325612 patent/CA2325612A1/en not_active Abandoned
- 2000-12-04 AU AU72014/00A patent/AU748660B2/en not_active Ceased
- 2000-12-07 BR BR0005748-7A patent/BR0005748A/en not_active IP Right Cessation
- 2000-12-07 CN CN 00135058 patent/CN1305322A/en active Pending
- 2000-12-09 KR KR1020000074943A patent/KR20010062306A/en not_active Application Discontinuation
- 2000-12-11 JP JP2000376207A patent/JP2001211483A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AU7201400A (en) | 2001-06-14 |
| KR20010062306A (en) | 2001-07-07 |
| AU748660B2 (en) | 2002-06-06 |
| BR0005748A (en) | 2001-07-17 |
| CA2325612A1 (en) | 2001-06-10 |
| JP2001211483A (en) | 2001-08-03 |
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