CN1780478A - Uplink dispatch transmission for high-speed rate TDM system - Google Patents
Uplink dispatch transmission for high-speed rate TDM system Download PDFInfo
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Abstract
The method includes following steps: in term of current emitting power, data buffer and QoS message of transmission service, UE determines an initial expecting bit rate; combines the subscript corresponding to the bit rate and emitting power to form the up stream dispatching message; on the appointed up stream channel, UE encodes and modulates the up stream dispatching message, and then sends it to base station; after NodeB receives the up stream dispatching message, it analyzes the message, and selects a part of UE allowed to transmit at time quantum in next dispatching period; NodeB makes answering to UE through control channel appointed by down stream dispatch; at down stream channel, in term of the received down stream dispatching signaling, selects appropriate current bit rate; UE transmits the data according to the selected bit rate.
Description
Technical field
The present invention relates to code division multiple access (being called for short CDMA) mobile communication system, particularly (be called for short HCR-TDD) in the TDD CDMA mobile communication system of 3.84Mcps two-forty, be used for the uplink scheduling method for transmitting signaling that up channel strengthens.
Background technology
Third generation partner plan (being called for short 3GPP) is a technology standardization tissue of implementing 3-G (Generation Three mobile communication system), and wherein the 3G (Third Generation) Moblie technical standard comprises Frequency Division Duplexing (FDD) (FDD) and time division duplex (TDD) pattern.3GPP is from setting up so far, respectively at having announced the Frequency Division Duplexing (FDD) (FDD) that mainly comprises 3.84Mcps and the 3-G (Generation Three mobile communication system) technical standard of time division duplex (HCR-TDD) in October, 1999, is called for short Release 99; Announce the 3-G (Generation Three mobile communication system) technical standard of the time division duplex (LCR-TDD) of the Frequency Division Duplexing (FDD) (FDD), time division duplex (HCR-TDD) and the 1.28Mcps that mainly comprise 3.84Mcps in 2000 again, be called for short Release 4; And announced again that in calendar year 2001 the interpolation high-speed data packets inserts (HSDPA) in the 3-G (Generation Three mobile communication system) technical standard of the time division duplex (LCR-TDD) of Frequency Division Duplexing (FDD) (FDD), time division duplex (HCR-TDD) and the 1.28Mcps of 3.84Mcps, is called for short Release 5.At present, 3GPP is implementing the Frequency Division Duplexing (FDD) (FDD) of 3.84Mcps, the technology of the 3-G (Generation Three mobile communication system) up link enhancing (UplinkEnhancement) of the time division duplex (LCR-TDD) of time division duplex (HCR-TDD) and 1.28Mcps is given and being ground, and expection will be in the technology standardization work of formal research up link enhancing (Uplink Enhancement) on the basis that the technology that above-mentioned up link is strengthened (Uplink Enhancement) gives grinding in 2004, the technical scheme that is produced will be contained in the Frequency Division Duplexing (FDD) (FDD) of following 3.84Mcps, the 3-G (Generation Three mobile communication system) technical standard of the time division duplex (LCR-TDD) of time division duplex (HCR-TDD) and 1.28Mcps is called for short Release 6.
The no matter Frequency Division Duplexing (FDD) (FDD) of 3.84Mcps and the up enhancement techniques of time division duplex (HCR-TDD) in the 3-G (Generation Three mobile communication system), still the up link of the time division duplex (LCR-TDD) of 1.28Mcps strengthens the technology of (Uplink Enhancement), its purpose all is by to the Frequency Division Duplexing (FDD) (FDD) by above-mentioned 3.84Mcps, the coverage of the capacity of the up link that the effective management of uplink transmission resource enforcement of the wireless network that 3-G (Generation Three mobile communication system) constituted of the time division duplex (LCR-TDD) of time division duplex (HCR-TDD) and 1.28Mcps and planning improve said system and the wireless area of said system is so that be suitable for the data service stronger to transmitting burst; In addition, by improving the performance of uplink dedicated transmission channel, thereby improve the coverage rate and the throughput of sub-district, improve uplink speed, reduce uplink delay.
The discussion that 3GPP strengthens about up channel at first is Frequency Division Duplexing (FDD) (FDD) beginning from 3.84Mcps, and in June, 2003,20 meetings of RAN agree to begin one's study up channel of time division duplex (being called for short TDD) system strengthens.The main project of research comprises the scheduling of base station (Node B) control, the request retransmission of mixing (being called for short HARQ) etc., and wherein HARQ is that automatic re-transmission and chnnel coding with packet combines a kind of method of carrying out transfer of data.At fdd mode, up channel strengthens needs some new up signalings, and they are that scheduling is relevant, that HARQ is relevant or may need in the future.Although strengthen just to enter on about the up channel of TDD, similar with FDD, in order to support the scheduling and the HARQ of Node B control, new up signaling needs equally, and they are that scheduling is relevant, that HARQ is correlated with or may need future.
Dispatching method about base station (Node B) control, at fdd mode, 3GPP TR25.896V0.4.2 has comprised two kinds of main methods: a kind of is the rate scheduling method (also being two threshold scheme) of base station (Node B) control, and another kind is the speed and the time scheduling method of base station (Node B) control.
In order to support the rate scheduling method of base station (Node B) control, two new message are introduced into: one is the speed application by name up signaling of (Rate Request is called for short RR), is used for the speed threshold values of UE to NodeB application lifting oneself; Another is that speed by name is replied the downlink signaling of (Rate Grant is called for short RG), is used for Node B and tells whether terminal (UE) allows the speed threshold values of its lifting oneself.The rate scheduling method of Node B control, its main thought is: each UE is in the initialization procedure of transmission channel, base station controller (RNC) is distributed to a transmission format composite set of UE (TFCS), and notify UE and control the base station (Node B) of described UE, RNC also provides two threshold values respectively simultaneously: one is the UE threshold value, and another is a Node B threshold value.This TFCS has comprised multiple transmission rate.In communication process, the transmission rate that UE is free to select to be no more than the UE threshold value is TFC, if UE need adopt the TFC bigger than UE threshold value, then UE improves described UE threshold value by the up signaling of RR to Node B request.Whether decision allows to improve the threshold value of described UE to Node B according to current factors such as interference, if allow, Node B tells UE by the RG downlink signaling.Attention UE threshold value in this process can not surpass Node B threshold value.
In the time and rate scheduling scheme of second kind of base station (Node B) control, UE is before carrying out transfer of data, some information need be issued Node B to carry out the request of transfer of data, Node B is according to the information of receiving, calculate the quality of the wireless channel of UE, and, to whether allowing this UE to transmit, carry out transfer of data etc. with great speed and unify scheduling and arrange according to the situation of the request of current noise situation and other UE.Concrete process is as follows:
The first step: UE sends the request of transfer of data in the uplink scheduling information control channel.The information that sends comprises the state of the data buffer of UE, the power rating of UE or the maximum power capability of UE.
Second step: Node B monitors the length of data queue of each UE report and the information of transmitting power, is selecting the few UE even can be that a UE transmitted in the time period of next dispatching cycle of trying one's best under the condition that sub-district (Cell) noise allows.Node B replys selected UE by descending scheduling specified control channel.Institute's information transmitted comprises: allow transmission time and time period, maximum other the schedule information such as transmitting power that allows.
The 3rd step: the UE that receives communication with dispatch instructions is specifying constantly and in the time period, is pressing specified rate transmissioning data.
Speed and time scheduling method have the specific speed scheduling to control the ability of this sub-district noise level more accurately, that is to say the maximum capacity that can make this sub-district.Its cost is to need the schedule information of transmission and instruct more complicated than simple rate scheduling.
At fdd mode, Fig. 1 has provided the up signaling of a kind of transmission: a kind of method of data buffering and transmitted power, promptly use extra uplink physical channel, and be called the uplink scheduling control channel and send the required information of uplink scheduling.
The TDD system is different with the FDD system, is that code word is limited.Whether whether above-mentioned two kinds of schemes are fit to TDD, perhaps need new scheduling scheme still to be in the research discussion.A kind of possible scheme just is based on time, speed and the physical resource scheduling scheme of (comprising code word and time slot).
Strengthen about the up channel of TDD system, divide up channel to HCR-TDD to strengthen again and the up channel of LCR-TDD is strengthened.The physical channel structure of HCR-TDD and LCR-TDD is different fully.
With reference to standard 25.221, Fig. 2 provides the physical channel structure of HCR-TDD.As seen from the figure, the physical channel of HCR-TDD is divided into system-frame (Frame), radio frames (Radio Frame) and time slot (Time Slot) on the time component.A radio frames comprises the transmission intercal of 10ms, is subdivided into 15 time slots again.Each time slot length is 2560 chips (2560*Tc chips).Each time slot can be designated as up or descending, to realize the transmission of asymmetric traffic.It is descending to have at least a time slot to be designated as in any configuration, has at least a time slot to be designated as up.In the time slot a plurality of physical channels can be arranged, (OVSF) distinguishes by channel code.
The corresponding a kind of data format of physical channel is called data bursts (burst), transmits in its particular time-slot in the unlimited frame that distributes.A data burst packets is drawn together two data fields (DataSymbols), a training sequence territory (Midamble) and the spatial domain (GP) as the time slot protection.The data field of a data burst is used to carry user data and the high-rise control command from transmission channel, certainly for dedicated channel, the part symbol of data field also may be used to the signaling of physical layer for transmission, for example control rate control command (TPC) or transmission transformat combination indication (TFCI).Each data field institute energy data carried by data symbolic number is relevant with employed spreading factor (SF), and the employed spreading factor of up direction can be 1,2,4,8,16 (channel code lengths).
In HCR-TDD, the Midamble in the burst of data can have two types, and short code and length that length is 256 chips are the long code of 512 chips.Data burst institute energy data carried by data speed is also relevant with the length of employed Midamble sign indicating number.
In standard 25.221, (Type3), data format is respectively as Fig. 3 A, Fig. 3 B, Fig. 3 C for Type1, Type2 to have defined the type of three kinds of data bursts.Two data fields that comprise in these three types, a training sequence territory (Midamble) and the length as the spatial domain (GP) of time slot protection all are different, and therefore institute can the data carried by data symbolic number also be different.Table 1 provides three kinds of data bursts to be selected different spreading factors for use time institute can the data carried by data symbolic number.
Table 1: institute can the data carried by data symbolic number when three kinds of data bursts were selected different spreading factors for use
| Spreading factor(SF) | Burst Type1 | Burst | Burst Type3 | |
| 1 | 1952 | 2208 | 1856 | |
| 2 | 976 | 1104 | 928 | |
| 4 | 488 | 552 | 464 |
| 8 | 244 | 276 | 232 |
| 16 | 122 | 138 | 116 |
When selecting the strong controls of four phase phase shifts (QPSK) modulation for use, a symbol takies 2 bits, therefore three kinds of data bursts, and when using the QPSK modulation system, institute can the data carried by data bit number when selecting different spreading factors for use, and is as shown in table 2.
Institute can the data carried by data bit number when three kinds of data bursts of table 2. were selected different spreading factors for use
| Spreading factor(SF) | Burst Type1 | Burst | Burst Type3 | |
| 1 | 1952*2 | 2208*2 | 1856*2 | |
| 2 | 976*2 | 1104*2 | 928*2 | |
| 4 | 488*2 | 552*2 | 464*2 | |
| 8 | 244*2 | 276*2 | 232*2 | |
| 16 | 122*2 | 138*2 | 116*2 |
Regulation and stipulation, for many yards transmission, each UE can use two physical channels simultaneously at most in a time slot, and these two parallel physical channels use two different channel code.During the multi-slot transmission, the employed physical resource of each time slot is identical.
In sum, in the HCR-TDD system, the bit number that each physical channel can carry and the type of data burst, the spreading factor of selecting for use, modulation system, the shared bit number of physical layer signaling TPC, TFCI that is carried, and it is relevant to be used to carry the required bit number of high-level signaling.The regulation and stipulation physical layer signaling only transmits on a code word of the numbering minimum of each time slot, so for many yards transmission up (two sign indicating numbers are arranged at most), first physical channel (code word) and second physical channel (code word) institute can the data carried by data bit number be different.
In the up enhanced scheme of FDD, uplink scheduling information mainly comprises the transmitted power of data buffering and UE.To Node B report data buffering is not good selection, because with regard to transmission delay, and the service quality QOS that different service needed is different.Therefore sending data buffering is not real effectively key factor for the equity dispatching of Node B.The more crucial information that Node B needs is that particular UE is for satisfying the desired data speed of corresponding Qos needs.If therefore can report UE desired data speed to Node B, just can adapt to professional delay requirement better, increase the flexibility of scheduling, thereby can make Node B make more excellent scheduling decision, finally reach and increase the sub-district throughput, the purpose that the business of raising system covers.
In addition up to the present, the scope of data buffering is much on earth, how to represent, and how to represent effective transmitted power of UE etc., does not also see concrete implementation.At the enhanced scheme of TDD, uplink scheduling information should comprise those information, how to realize, does not also all have to determine.
Summary of the invention
The transmission method that the purpose of this invention is to provide the required uplink scheduling information of a kind of Node B fast dispatch.
For achieving the above object, a kind of uplink scheduling method for transmitting signaling that is used for high-rate time-divided duplexing system comprises step:
A) UE determines an initial desired data rates according to current transmitted power and data buffering and the information such as Qos of wanting transport service, and the subscript of this expected rate correspondence and its transmitted power are formed uplink scheduling information together;
B) UE is on the up channel of appointment, sends to the base station after multiplexing with described uplink scheduling information is encoded;
C) after Node B receives the reporting information of UE transmission, resolve these information, select the part UE that permission is transmitted in the time period of next dispatching cycle;
D) Node B replys selected UE by descending scheduling specified control channel;
E) UE selects suitable current data transmission rate according to the descending scheduling signaling of receiving on the descending scheduling channel of appointment;
F) UE is specifying constantly and in the time period, is transmitting data according to selected message transmission rate.
The present invention reports Node B with UE desired data speed, can optimize the scheduling strategy of Node B; The desired data speed that reports UE can reduce the required up signaling bit of uplink scheduling; Take all factors into consideration the data rate of user expectation and its transmitted power, can further reduce the scope of the transmitted power that UE need report, and then be reduced to the required up signaling bit of expression transmitted power; The method can adapt to professional delay requirement better, increases the flexibility of scheduling; The method can increase the throughput of sub-district, and the business that improves system covers.
Description of drawings
Fig. 1 is the uplink scheduling information control channel;
Fig. 2 is the physical channel structure of HCR-TDD;
Fig. 3 A is the structure of the data burst form 1 (Burst Type1) among the HCR-TDD;
Fig. 3 B is the structure of the data burst form 2 (Burst Type2) among the HCR-TDD;
Fig. 3 C is the structure of the data burst form 3 (Burst Type3) among the HCR-TDD;
Fig. 4 is a kind of uplink scheduling method for transmitting signaling that up channel strengthens that is used for;
Fig. 5 is the coding multiplexing method of uplink scheduling information;
Fig. 6 is the code multiplexing process example of uplink scheduling information.
Embodiment
Core concept of the present invention is in the dispatching method of base station (node B) control, and the uplink scheduling information that the user sends (Scheduling Information is called for short SI) mainly comprises the data rate and the current power information of user expectation; According to the physical channel structure of HCR-TDD system, the present invention provides the building method of the data rate collection of user expectation; Take all factors into consideration the data rate of user expectation and required transmitted power, can further reduce the scope of the transmitted power that UE need report, and then be reduced to the required up signaling bit of expression transmitted power; The method can adapt to professional delay requirement better, increases the flexibility of Node B scheduling; Thereby can increase the throughput of sub-district, the business that improves system covers.In order to improve the reliability of uplink scheduling signaling, the present invention gives the concrete coding multiplexing method of uplink scheduling signaling.
The present invention proposes in the HCR-TDD system, a kind of uplink scheduling method for transmitting signaling that is used for the up channel enhancing, and with reference to Fig. 4, its step mainly comprises:
401 step: the UE of described figure are according to current transmitted power and data buffering and the information such as Qos of wanting transport service, determine a desired data speed, search the transmission data rate table of UE end, data rate like therefrom finding out with it recently, as its expected rate, then with the subscript of described desired data speed correspondence and current transmitted power together as the uplink scheduling information that will report Node B (SI);
402 step: the UE of described figure send to base station (node B) after multiplexing with the subscript of described desired data speed correspondence and current transmitted power are encoded on the up channel of appointment;
403 steps of described figure: Node B is behind the reporting information that receives the UE transmission on the up channel of appointment, resolve these information, select certain dispatching algorithm for use, selecting the part UE that in the time period of next dispatching cycle, allows transmission under the condition that sub-district (Cell) noise allows;
404 steps of described figure: Node B replys selected UE by descending scheduling specified control channel.Institute's information transmitted may comprise: allow the maximum rate of transmission, operable code word, time slot etc.;
405 step: the UE of described figure are on the descending scheduling channel of appointment, and according to the descending scheduling signaling of receiving, according to the code word of distributing, time slot etc., selection is no more than a certain speed of the peak transfer rate of Node B permission, as its current transmission rate;
406 step: the UE of described figure are specifying in the moment and time period, according to selected message transmission rate, at the appointment code word transmitting data of assigned timeslot.
Wherein, in step 401, the desired data rates table that UE end keeps is that UE is when inserting, by radio resource controller RNC according to the information distribution such as traffic load of the Qos of UE business waiting for transmission and current area.
The building method of terminal desired data Speedometer Drive will be described in detail in detail below.
Know by aforementioned, in the HCR-TDD system, the bit number that each physical channel can carry and the type of data burst, the spreading factor of selecting for use, modulation system, the shared bit number of physical layer signaling TPC, TFCI that is carried, and it is relevant to be used to carry the required bit number of high-level signaling.The regulation and stipulation physical layer signaling only transmits on a code word of the numbering minimum of each time slot, so for ascending multi-code transmission (two sign indicating numbers are arranged at most), first physical channel (code word) and second physical channel (code word) institute can the data carried by data bit number be different.Below our situation when at first analysis user only takies a time slot.
The bit number N that first physical channel can carry
B1As shown in Equation (1):
N
B1＝(N
d_chip/SF
1)×2-N
TPC-N
TFCI-N
DCCH1 (1)
SF wherein
1Represent the spreading factor that this physical channel is selected, its value can be 1,2,4,8,16.N
d_chip。Represent the shared number of chips of carrying two segment datas in the pairing data burst of current physical channel, it is relevant with the type of data burst.At three types data burst, N
D_chipValue be respectively: 1952,2208 and 1856;
N
TPCThe required bit number of expression transmission TPC, it is relevant with selected ascending time slot form, and standard TS25.221 5.0 editions has provided the ascending time slot form that may select for use, wherein N
TPCValue can be 0 and 2; N
TFCIRepresent transformat indication (TFCI) required bit number that takies of the required carrying of this physical channel, in like manner, according to the given ascending time slot form of standard, its possible value is 0,4,8,16,32.N
DCCH1Represent the shared bit number of high-level signaling of the required carrying of this physical channel, can be 0; N
TPC, N
TFCIAnd N
DCCH1Value given by high-level signaling.
Different with first physical channel, when many yards transmission, second physical channel of regulation and stipulation (code word) need not carry signaling informations such as TPC and TFCI, so second bit number N that physical channel can carry
B2As shown in Equation (2):
N
B2＝(N
d_chip/SF
2)×2-N
DCCH2 (2)
N wherein
D_chipImplication identical with value with formula (1), N
DCCH2The shared bit number of high-level signaling of representing the required carrying of this physical channel also is to be specified by high-level signaling, can be 0.SF
1And SF
2Value can be identical, also can be different.
So carry out many yards whens transmission, total data bit that may carry as shown in Equation (3):
N
Bits＝N
B1+N
B2 (3)
Original information bits (also the claiming the data block length) N that the user sends
Block, on the physical channel that is distributed, transmit N through operations such as chnnel coding and rate-matched back
BlockAs shown in Equation (4):
N
Block=N
Bits* R
c(4) R wherein
cBe code rate, 0＜R
c≤ 1.Here code rate refers to the physics bit N that original information bits that the user sends and shared physical channel can carry
BitsThe ratio.
The data block that the user sends is generally transmitted in a Transmission Time Interval (being called for short TTI), and for HCR-TDD, the length of TTI may be 10ms, 20ms etc., and the possible higher uplink bit rate (kbps) of user's per second is as shown in Equation (5) so:
R
d＝(N
Block×1000/TTI)/10000＝N
Block/TTI kbps (5)
By formula (1)-(5), we can obtain user possible message transmission rate (kbps) R under single time slot situation
DiSet { R
Di.
That if the user is assigned to is a plurality of (t) time slot, suppose the physical resource that different time slots uses, be all identical (in order to reduce the downlink signaling expense) such as code word, data burst type, then the user when taking a plurality of time slot, the data rate that the user may be transmitted (kbps) R
DtFor:
R
dt＝R
d×t (6)
Suppose speed set { R
DiComprise M element, can use " log so
2M "=data rate of r bit indication user expectation.
User and Node B end all keep possible speed set.When the UE expectation can send with certain speed, pairing subscript index sent Node B to own desired data speed, when Node B receives index, can know the speed of UE expectation.
If the speed that user and Node B keep set is bigger, the pairing binary bits number of speed subscript is more so, and then causes required up signaling bit number more; Keep bigger speed set in addition and need the extra bigger data buffering expense of user side.Consider the validity of up signaling transmission in a word, should select more moderate speed granularity (two speed between poor).
So should select { R
DiA certain subclass as UE may desired data rate set, the factor of considering when choosing is as follows:
1) do not consider less data rate, for example less than 20kbps.Because what up enhancing was primarily aimed at is data service;
2) granularity of data rate can be different, and promptly speed is ascending when choosing, and the difference between adjacent two speed can be different; The data rate of for example choosing hour, corresponding speed granularity also can be less, for example can be about 30kbps; When data rate was big, corresponding speed granularity can be bigger, for example can be 60kbps or even 100kbps;
3) when two or more speed are approximate, the preferential speed of selecting to take less code word;
, many yards transmission influence the performance of transfer of data because can causing intersymbol interference.
Another information that user (UE) need report Node B is current transmitted power.In current standard, the dynamic range of UE through-put power is that (maximum is 31dbm to 75db, and minimum is-44dbm).If the power granularity of expression is 1db, UE needs 7 bits to represent its power information at least so.
We notice in the minimum of the parameter that standard TS25.105 receives about node B requires, and find or even under the situation of white Gaussian noise, for the speech business of 12.2kbps, Block Error Rate is 10
-2The time, the minimum transmission power of UE can not be less than-27.5dbm.Therefore under the situation of worst, UE must only (maximum transmission power of UE be 31dBm, 31-(27.5)=58.5dB) for 59db to the dynamic range of the effective power of Node B report.Therefore compare original method, 6 bits are just enough represented the power information of UE.
In fact, the expected rate of UE report has comprised transmitted power to a certain extent, because expected rate calculates according to data buffering and current transmitted power, in addition, Node B also can infer the roughly transmitted power of UE according to power control process (lasting TPC order).Therefore in order to reduce the bit number of up signaling, it is big that the power granularity can be selected.Certainly different power granularities may cause in order to report the shared signaling bit of power information to count difference.
For example, if the power granularity is 2db, 59/2=29.5, then 5 bits just enough are used to represent the power information that sends; If power granularity 4db, 59/4=14.75, then 4 bits are used to represent the power information that sends with regard to enough;
If, then use the 4-6 bit just to be enough to represent the power information of UE so the power granularity is 4-1db.
In sum, SI information comprises the UE desired data speed of r bit and the power information of 4-6 bit (n bit altogether).In order further to protect these bits, improve the reliability of their transmission, provide SI transmission of Information mode and code multiplexing process below.
Select for use one to spread to 16 up code word, data burst is that physical channel, the modulation system of Class1 is QPSK, transmit the uplink scheduling signaling, consider possible TPC (being made as the m bit), will have 244-m bit space to be used to express described n SI information bit so on this channel.
The code multiplexing process of the uplink scheduling information SI that the present invention proposes, with reference to Fig. 5, its step mainly comprises:
501 steps of described figure: uplink scheduling information SI information mainly comprises the subscript bit and the current transmitted power bit of user of the data rate correspondence of user expectation, altogether n bit;
502 steps of described figure: with described n SI bit stream, adopt certain coded system, for example code rate is that 1/3 convolution code or block code etc. are encoded;
503 steps of described figure: coded bit is sent into rate adaptation operating, form the data flow of 244-m bit;
504 steps of described figure: with the data flow of 244-m bit of described generation, the mode that interweave with the second time that provides according to standard 25.222 carries out interweaving the second time;
505 steps of described figure: in the bit stream after interweaving, insert m TPC bit, form data burst form as shown in the figure.
The data burst of described formation will send to Node B on the appointment code word of assigned timeslot.
Embodiment
The present invention mainly is about in the HCR-TDD system, and a kind of uplink scheduling method for transmitting signaling that is used for the up channel enhancing is so scheduling mode, descending scheduling signaling content and the transmission means etc. of relevant Node B are omitted to some extent in the example below.
According to formula (1)-(5) that ascending time slot structure and the present invention of HCR-TDD provides, suppose N
TPC=2 bits, N
TFCI, N
DCCH1, and N
DCCH2The example of the data transmission rate subclass of=0, a possible user expectation that is used for up channel enhancing (EUCH) is as shown in table 4.
Possible expected data transmission rate collection example that is used for up enhancing (EUCH) of table 4.
| Rate No. | Burst Type | SF | Code Rate (R c) | N_data (Slot/Bits) | Data Rate (kbps) (only taking a time slot) |
| 1 | 1 | 16 | 1/3 | 242 | 8.06 |
| 2 | 1 | 8 | 1/3 | 484 | 16.06 |
| 3 | 1 | 4 | 1/3 | 968 | 32.27 |
| 4 | 1 | 2 | 1/3 | 1936 | 64.5 |
| 5 | 1 | 2+8 | 1/3 | 2420 | 80.6 |
| 6 | 1 | 2+4 | 1/3 | 2904 | 96.8 |
| 7 | 1 | 2+2 | 1/3 | 3872 | 129.0 |
| 8 | 1 | 8 | 1/2 | 484 | 24.2 |
| 9 | 1 | 4 | 1/2 | 968 | 48.4 |
| 10 | 1 | 2 | 1/2 | 1936 | 96.8 |
| 11 | 1 | 2+8 | 1/2 | 2420 | 121.0 |
| 12 | 1 | 2+4 | 1/2 | 2904 | 145.3 |
| 13 | 1 | 2+2 | 1/2 | 3872 | 193.6 |
| 14 | 1 | 8 | 3/4 | 484 | 36.3 |
| 15 | 1 | 4 | 3/4 | 968 | 72.6 |
| 16 | 1 | 2 | 3/4 | 1936 | 145.2 |
| 17 | 1 | 2+8 | 3/4 | 2420 | 181.5 |
| 18 | 1 | 2+4 | 3/4 | 2904 | 217.9 |
| 19 | 1 | 2+2 | 3/4 | 3872 | 290.4 |
| 20 | 2 | 8 | 1/3 | 548 | 18.2 |
| 21 | 2 | 4 | 1/3 | 1096 | 36.5 |
| 22 | 2 | 2 | 1/3 | 2192 | 73.0 |
| 23 | 2 | 2+8 | 3/4 | 2740 | 205.5 |
| 24 | 2 | 2+4 | 3/4 | 3288 | 246.6 |
| 25 | 2 | 2+2 | 3/4 | 4384 | 328.8 |
| 26 | 3 | 2+8 | 3/4 | 2300 | 172.5 |
| 27 | 3 | 2+4 | 3/4 | 2760 | 207.0 |
| 28 | 3 | 2+2 | 3/4 | 3680 | 276.0 |
The principle of choosing data rate that provides according to the present invention, we only choose from table 4 and are numbered 3,4, and 6,12,18,24,25 and 28 as the basic expected data transmission rate collection of UE, as table 5.
Table 5. is used to dispatch the expected rate collection of requirement under single time slot situation
| Rate No. | Burst Type | SF | Code Rate | N_data (Slot/B its) | Data Rate (kbps) (only one slot time) |
| 0 | 1 | 4 | 1/3 | 968 | 32.27 |
| 1 | 1 | 2 | 1/3 | 1936 | 64.5 |
| 2 | 1 | 2+4 | 1/3 | 2906 | 96.8 |
| 3 | 1 | 2+4 | 1/2 | 2906 | 145.3 |
| 4 | 1 | 2+4 | 3/4 | 2906 | 217.9 |
| 5 | 2 | 2+4 | 3/4 | 3288 | 246.6 |
| 6 | 3 | 2+2 | 3/4 | 3680 | 276.0 |
| 7 | 2 | 2+2 | 3/4 | 4384 | 328.8 |
Consider the multi-slot situation, the formula that provides according to the present invention (6) can further obtain comprising the desired data rates collection that is used to dispatch requirement of multi-slot situation, as table 6.
Table 6. comprises the expected rate collection that is used to dispatch requirement of multi-slot situation
| Rate No. | Burst Type | SF | Code Rate | N_data (Slot/B its) | Data Rate (kbps) (only a TTI) |
| 0 | 1 | 4 | 1/3 | 968 | 32.27 |
| 1 | 1 | 2 | 1/3 | 1936 | 64.5 |
| 2 | 1 | 2+4 | 1/3 | 2906 | 96.8 |
| 3 | 1 | 2+4 | 1/2 | 2906 | 145.3 |
| 4 | 1 | 2+4 | 3/4 | 2906 | 217.9 |
| 5 | 2 | 2+4 | 3/4 | 3288 | 246.6 |
| 6 | 3 | 2+2 | 3/4 | 3680 | 276.0 |
| 7 | 2 | 2+2 | 3/4 | 4384 | 328.8 |
| 8 | 2 | 2+4 | 3/4 | 3288*2 | 493.2 |
| 9 | 2 | 2+4 | 3/4 | 3288*3 | 739.8 |
| 10 | 2 | 2+4 | 3/4 | 3288*4 | 986.4 |
| 11 | 2 | 2+4 | 3/4 | 3288*5 | 1233.0 |
| 12 | 2 | 2+4 | 3/4 | 3288*6 | 1479.6 |
| 13 | 2 | 2+4 | 3/4 | 3288*7 | 1726.2 |
| 14 | 2 | 2+2 | 3/4 | 4384*7 | 2301.6 |
In table 6, one has 15 kinds of possible data rates, so just can represent these data rates with 4 bits.For example represent to be numbered 0 data rate with 0000,0001 expression is numbered 1 data rate ..., represent to be numbered 14 data rate with 1110.
Suppose to represent with 4 bits the data rate of user expectation, 4 bits are represented user's power information, the bit number m=2 that the TPC that is transmitted is shared, and the code multiplexing process example of uplink scheduling information SI then, with reference to Fig. 6, its step mainly comprises:
601 steps of described figure: uplink scheduling SI information mainly comprises the subscript bit (4 bit) of the data rate correspondence of user expectation and user's current transmitted power bit (4 bit), totally 8 bits;
602 steps of described figure: with described 8 SI bit streams, adopting code rate be that 1/3 convolution code is encoded sequence behind the coding of generation (4+4+8) * 3=48 bit;
603 steps of described figure: sequence after the convolutional encoding is sent into 5 times of repetition coder, generate the sequence of 48*5=240 bit;
604 steps of described figure: the rate-matched process with reference to standard 25.222 provides through rate adaptation operating, forms the sequence of 242 bits with described sequence; In fact the operating process of rate-matched here is exactly to insert 2 bit informations on appointed positions;
605 steps of described figure: with the data flow of 242 bits of described generation, the mode that interweave with the second time that provides according to standard 25.222 interweaves;
606 steps of described figure: in the bit stream after interweaving, insert 2 TPC bit informations, form data burst form as shown in the figure.
The data burst of described formation will send to Node B on the appointment code word of assigned timeslot.
Claims (10)
1. uplink scheduling method for transmitting signaling that is used for high-rate time-divided duplexing system comprises step:
A) UE determines an initial desired data rates according to current transmitted power and data buffering and the information such as Qos of wanting transport service, and the subscript of this expected rate correspondence and its transmitted power are formed uplink scheduling information together;
B) UE is on the up channel of appointment, with the encoded base station that sends to after multiplexing of described uplink scheduling information:
C) after Node B receives the reporting information of UE transmission, resolve these information, select the part UE that permission is transmitted in the time period of next dispatching cycle;
D) Node B replys selected UE by descending scheduling specified control channel;
E) UE selects suitable current data transmission rate according to the descending scheduling signaling of receiving on the descending scheduling channel of appointment;
F) UE is specifying constantly and in the time period, is transmitting data according to selected message transmission rate.
2. method according to claim 1 is characterized in that described definite initial desired data rates comprises step:
Search the desired data rates table that UE end keeps, therefrom find out with it recently like data rate.
3. method according to claim 2 is characterized in that: each speed in the desired data rates table that described UE end keeps generates according to formula (1)-(6).
4. method according to claim 2 is characterized in that: the desired data rates table that described UE end keeps is the subclass of the UE data rate table that may transmit.
5. method according to claim 2 is characterized in that: the desired data rates table that described UE end keeps, if comprise M element, can use so
The data rate of individual bit indication user expectation.
6. method according to claim 1 is characterized in that: the uplink scheduling information described in the step b) comprises the subscript and the current power information of desired data speed correspondence.
7. method according to claim 1 is characterized in that: the spreading factor SF that the up channel described in the step b) uses is 16, and the type of data burst is 1.
8. method according to claim 1 is characterized in that: the code multiplexing process of the uplink scheduling information described in the step b) comprises step:
A) uplink scheduling information SI information comprises the subscript bit and the current transmitted power bit of user of the data rate correspondence of user expectation, altogether n bit;
B) with described n SI bit stream, adopting coded system is that code rate is that 1/3 convolution code or block code etc. are encoded;
C) coded bit is sent into rate adaptation operating, form the data flow of 244-m bit;
D) with the data flow of 244-m bit of described generation, carry out interweaving the second time;
E) in the bit stream after interweaving, insert m TPC bit, form the data burst form.
9. according to the described method of claim 1, it is characterized in that in step (d), institute's information transmitted comprises: allow the maximum rate of transmission, operable code word, time slot etc.
10. method according to claim 8 is characterized in that in step (d) interleaving mode that code requirement 25.222 provides interweaves the described second time.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2008080296A1 (en) * | 2006-12-30 | 2008-07-10 | Zte Corporation | A method for configuring and utilizing signalling channels in high speed uplink packet access system |
| WO2009100666A1 (en) * | 2008-02-05 | 2009-08-20 | Huawei Technologies Co., Ltd. | A method, device and system for processing the high speed data transmission |
| CN101442816B (en) * | 2007-11-23 | 2010-12-15 | 大唐移动通信设备有限公司 | Transmission method for upward control signaling of TDD system |
| CN102549960A (en) * | 2009-08-12 | 2012-07-04 | 阿尔卡特朗讯 | Method of reporting scheduling information |
| CN101442338B (en) * | 2007-11-23 | 2012-09-26 | 电信科学技术研究院 | Transmission method for upward control signaling of TDD system |
| CN110035521A (en) * | 2018-01-12 | 2019-07-19 | 中国信息通信研究院 | A kind of mobile communication multi-slot dispatching method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008080296A1 (en) * | 2006-12-30 | 2008-07-10 | Zte Corporation | A method for configuring and utilizing signalling channels in high speed uplink packet access system |
| CN101442816B (en) * | 2007-11-23 | 2010-12-15 | 大唐移动通信设备有限公司 | Transmission method for upward control signaling of TDD system |
| CN101442338B (en) * | 2007-11-23 | 2012-09-26 | 电信科学技术研究院 | Transmission method for upward control signaling of TDD system |
| WO2009100666A1 (en) * | 2008-02-05 | 2009-08-20 | Huawei Technologies Co., Ltd. | A method, device and system for processing the high speed data transmission |
| CN102549960A (en) * | 2009-08-12 | 2012-07-04 | 阿尔卡特朗讯 | Method of reporting scheduling information |
| US8964665B2 (en) | 2009-08-12 | 2015-02-24 | Alcatel Lucent | Method of reporting scheduling information |
| CN102549960B (en) * | 2009-08-12 | 2016-01-27 | 阿尔卡特朗讯 | For method and the device of report schedule information |
| CN110035521A (en) * | 2018-01-12 | 2019-07-19 | 中国信息通信研究院 | A kind of mobile communication multi-slot dispatching method and system |
| CN110035521B (en) * | 2018-01-12 | 2023-04-18 | 中国信息通信研究院 | Mobile communication multi-time slot scheduling method and system |
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