CN101651514A - Transmitting and receiving method in time division high speed downlink packet access system - Google Patents
Transmitting and receiving method in time division high speed downlink packet access system Download PDFInfo
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Abstract
The invention relates to a time division synchronous code division multiple access system, and discloses a transmitting and receiving method in a time division high speed downlink packet access system. In the method, HS-SCCH accompanying HS-PDSCH initial transmission is canceled, and a network and UE perform HS-DSCH transmission according to beforehand agreement so as to effectively reduce the overhead of the HS-SCCH. The value of a spreading code set field in the HS-SCCH is specified, so the system allows the conventional HS-DSCH transmission in an HS-SCCH Less state, and the UE can automatically distinguish the type of the HS-PDSCH currently received and the type of the HS-SCCH currently received. In a blind detection mode, the method restricts the types and number of available transmission blocks of the UE, the number of allocatable continuous spreading codes and the number of time slots, and simplifies the decoding in the HS-SCCH Less state.
Description
Technical field
The present invention relates to TDS-CDMA system, particularly the time division high speed downlink packet access technique.
Background technology
Along with the continuous development of the communication technology and user raising day by day to quality of service requirement, the message transmission rate that reaches as high as 2Mbit/s that third generation partner program (3rd Generation Partnership Project is called for short " 3GPP ") standard defined before Release 4 versions can't satisfy the demand of user to high-speed data service gradually.In the case, 3GPP has introduced high speed downlink packet access (High Speed Downlink Packet Access is called for short " HSDPA ") technology in Release 5 standards.
HSDPA is a kind of enhanced scheme that 3GPP Release 5 proposes, main purpose is the high speed support to Packet data service, and obtaining lower time delay, higher throughput of system and stronger service quality (Quality of Service is called for short " QoS ") guarantees.From technical standpoint, HSDPA is by introducing high speed descending sharing channel (High Speed Downlink SharedChannel, be called for short " HS-DSCH ") the enhancing air interface, and in universal mobile telecommunications system grounding wireless access network (UMTS Terrestrial Radio Access Network is called for short " UTRAN "), strengthen corresponding functional entity.From bottom, mainly be to introduce mixed self-adapting repeat requests (Hybrid-Automatic Repeat Request, be called for short " H-ARQ ") and described adaptive modulation and coding (Adaptive Modulation and Coding, abbreviation " AMC ") technology increase data throughout.
The HARQ system is at automatic repeat requests (Automatic Repeat Request, abbreviation " ARQ ") introduces a forward error correction (Forward Error Correction in the system, be called for short " FEC ") subsystem, be used for correcting the error pattern of frequent appearance to reduce number of retransmissions, promptly in the error correcting capability scope, automatically correct a mistake, exceed the error correction scope and then require transmitting terminal to resend data, this has increased the reliability and the efficiency of transmission of system.That is to say that the channel condition that H-ARQ can adapt to moment automatically provides trickle data rate adjustment.The AMC technology makes system in the scope of restriction, can adjust modulation and coded system adaptively according to the change of channel quality.In an AMC system, those channel conditions that sit pretty are user (normally those users very near apart from the base station) preferably, can be endowed the modulation system of high-order and the coded system of two-forty (such as 16QAM and 1/2Turbo encoding rate); And the relatively poor user's (normally those are in the user of cell boarder) of those channel conditions that are in unfavorable position then is endowed the modulation system of low order and the coded system of low rate (such as QPSK and 1/3Turbo encoding rate).
Existing HS-DSCH link circuit self-adapting process as depicted in figs. 1 and 2.Mainly comprise following two parts:
1) base-station node (Node Base Station is called for short " Node B ") process such as Fig. 1:
Step S100:Node B sends HS-SCCH, information such as the Radio Resource situation of the carrying HS-DSCH that notifying user equipment (User Equipment is called for short " UE ") is distributed and modulation system.
Step S101:Node B sends HS-DSCH on the Radio Resource of HS-SCCH indication.
Step S102: high-speed shared information channel (the High Speed SharedInformation Channel that receives object UE, be called for short " HS-SICH "), send the status report of HS-SICH carrying to high level, comprise ACK (affirmation)/NACK (not confirming) and channel quality indication (Channel Quality Indicator in this status report, be called for short " CQI "), flow process finishes.
2) UE process such as Fig. 2:
Step S200:UE detects and receives one's own HS-SCCH message.
Step S201:UE receives corresponding HS-PDSCH (physical channel of carrying HS-DSCH) according to the indication of HS-SCCH.
Step S202:UE is received HS-PDSCH, produces ACK/NACK information and is sending to Node B together with the CQI information that the nearest time obtains on corresponding HS-SICH, and flow process finishes.
HS-SCCH is the down control channel that TD-HSDPA uses, and is a physical channel, and it is used to carry all relevant bottom control information.HS-SCCH is shared by all terminals of initiating the HSDPA business, but to single HS-DSCH Transmission Time Interval (Transmission Timing Interval, be called for short " TTI "), each HS-SCCH can only take two spread spectrum code resources for a relevant downlink signaling of terminal carrying HS-DSCH.
The signaling of HS-SCCH carrying is:
● spreading code set information (8 bit) X
Ccs, 1, X
Ccs, 2, X
Ccs, 3, X
Ccs, 4, X
Ccs, 5, X
Ccs, 6, X
Ccs, 7, X
Ccs, 8
● gap information (5 bit) X
Ts, 1, X
Ts, 2..., X
Ts, 5
● modulation system information (1 bit) X
Ms, 1
● transport block size information (6 bit) X
Tbs, 1, X
Tbs, 2..., X
Tbs, 6
● hybrid automatic repeat request process information (3 bit) X
Hap, 1, X
Hap, 2, X
Hap, 3
● redundancy version information (3 bit) X
Rv, 1, X
Rv, 2, X
Rv, 3
● new data indication (1 bit) X
Nd, 1
● HS-SCCH cyclic sequence number (3 bit) X
Hcsn, 1, X
Hcsn, 2, X
Hcsn, 3
● terminal iidentification number (1 6 bit) X
Ue, 1, X
Ue, 2... X
Ue, 16
Fig. 3 shows the coding/multiplexing flow process of HS-SCCH channel among the present TD-HSDPA, and concrete steps are as follows:
Step S300: spreading code set, gap information, modulation system information, transport block size information, HARQ information, redundancy version information, new data indication and cyclic sequence number are carried out information multiplexing, obtain a
1, a
2..., a
A
Step S301:, obtain b together with the terminal iidentification cyclic redundancy check (CRC) that number (UE ID) adds (CyclicRedundancy Check is called for short " CRC ")
1, b
2..., b
B
Step S302: chnnel coding obtains c
1, c
2..., c
c
Step S303: rate-matched obtains f
1, f
2..., f
R
Step S304: interleaving treatment obtains v
1, v
2..., v
R
Step S305: physical channel segmentation obtains u
P, 1, u
P, 2..., u
P, Up
Step S306: physical channel mapping.
In the existing HS-SCCH loaded information, spreading code is continuous dispensing between initial code and stop code, and comprises initial code and stop code.Initial code K
StartBy bit X
Ccs, 1, X
Ccs, 2, X
Ccs, 3, X
Ccs, 4Signaling, stop code K
StopBy bit X
Ccs, 5, X
Ccs, 6, X
Ccs, 7, X
Ccs, 8Signaling, K
StartSmaller or equal to K
StopUnless (spread spectrum coefficient SF=1, X at this moment
Ccs, 1X
Ccs, 2X
Ccs, 3X
Ccs, 4X
Ccs, 5X
Ccs, 6X
Ccs, 7X
Ccs, 8=11110000).
As mentioned above, under existing protocol, HS-DSCH transmission each time must just can be finished under the cooperation of HS-SCCH signaling.For the transmission of big data packet traffic, it is less that HS-SCCH signaling resource requirement accounts for the ratio of professional overall resource requirement; Yet the frequent and less business of packet for transmission, such as packet voice (Voice over IP is called for short " VoIP "), it is considerable that the expense of HS-SCCH signaling just seems, therefore is necessary existing system is optimized.
For adapting to the professional transmission of small data packets such as VoIP, in the FDD-HSDPA system, introduced HS-SCCH Less operation, FDD refers to Frequency Division Duplexing (FDD) (Frequency DivisionDuplex), generally, be exactly that the first transmission of each transmission block does not need the HS-SCCH indication, UE disposes according to high level, on pre-assigned Radio Resource HS-DSCH being carried out blind decoding receives, if reception result is correct, then the UE feeding back ACK is given Node B, otherwise demodulation result is stored, and do not send NACK; When first bust this retransmitted, Node B used HS-SCCH to cooperate and retransmits.Do not need HS-SCCH owing to transmit first during HS-SCCH Less operation, therefore can save the HS-SCCH signaling.
HSDPA in the TD-SCDMA system is called the TD-HSDPA system again.Based on the consideration identical with the FDD-HSDPA system, the TD-HSDPA system also can introduce above-mentioned HS-SCCHLess operation, to reduce the HS-SCCH signaling consumption under some business.Specifically, when the UE in the TD-HSDPA system was configured in HS-SCCH Less mode of operation, business was transferred to UE in the following way:
1) the first transmission of HS-SCCH Less pattern HS-PDSCH does not need to follow HS-SCCH, and it is pre-configured by high level that UE receives the required control information (the spreading code set information of use, gap information, modulation system information, transport block size information and redundancy version information) of HS-PDSCH.In order to determine whether the HS-PDSCH that UE receives really belongs to this UE, can add the UE id information on the CRC check bit of HS-PDSCH, and implementation method is identical with the corresponding implementation method of the HS-SCCH shown in Fig. 3;
2) re-transmission of HS-SCCH Less pattern HS-PDSCH need be followed HS-SCCH;
When 3) UE is configured in HS-SCCH Less mode of operation, also can receive HS-SCCH and corresponding HS-PDSCH, specifically use which kind of transmission to determine by Node B according to the regulation of existing protocol.
In sum,, reduce the HS-SCCH signaling consumption, can in the TD-HSDPA system, introduce HS-SCCH Less operation in order to adapt to the small data packets business of VoIP and so on.When UE was configured in HS-SCCH Less state, Node B both can carry out the HS-DSCH transmission according to HS-SCCH Less pattern, also can carry out the routine transmission according to existing protocol.Because the re-transmission of HS-SCCH Less pattern need be followed HS-SCCH, might as well be called novel HS-SCCH; Existing conventional H S-PDSCH transmission also need be followed HS-SCCH, might as well be called conventional H S-SCCH.How UE judges the transmission of the current HS-PDSCH that receives for which kind of mode, how to judge that it is the re-transmission of HS-SCCH Less pattern that the HS-SCCH that receives indicates whether, and how to design the HS-SCCHLess pattern novel HS-SCCH form and with the existing protocol compatibility, be the problem that the present invention need solve.
Summary of the invention
The object of the present invention is to provide method of sending and receiving in a kind of time division high speed downlink packet access system, can reduce the HS-SCCH signaling consumption.
For solving the problems of the technologies described above, embodiments of the present invention provide sending method in a kind of time division high speed downlink packet access system, may further comprise the steps:
If the first biography under the blind check pattern then directly sends high speed downlink shared channel HS-DSCH according to predefined configuration, do not follow the transmission high-speed shared control channel HS-SCCH;
If the re-transmission under the blind check pattern then sends HS-SCCH, and the value of the spreading code set field of this HS-SCCH is in the supplementary set of routine set;
If conventional HS-DSCH transmission then sends HS-SCCH, and this HS-SCCH the value of spreading code set field in the routine set;
Conventional set comprises: the initial code sequence number is less than or equal to the spreading code set field value of stop code sequence number, or spread spectrum coefficient is 1 o'clock a particular value.
Embodiments of the present invention also provide method of reseptance in a kind of time division high speed downlink packet access system, may further comprise the steps:
When not receiving HS-SCCH, high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH is carried out blind check according to predefined configuration;
If receive HS-SCCH, then the indication according to the HS-SCCH that is received receives HS-PDSCH, if the value of the spreading code set field of this HS-SCCH is to retransmit corresponding value under the blind check pattern, then will merge according to this HS-SCCH HS-PDSCH that receives and the demodulation result of preserving because of the blind check mistake;
Retransmitting corresponding value under the blind check pattern is the interior particular value of conventional set supplementary set;
Conventional set comprises: the initial code sequence number is less than or equal to the spreading code set field value of stop code sequence number, or spread spectrum coefficient is 1 o'clock a particular value.
Embodiment of the present invention compared with prior art, the main distinction and effect thereof are:
By the HS-SCCH that the first transmission of cancellation HS-PDSCH is followed, network and UE carry out the HS-DSCH transmission according to prior agreement, can effectively reduce the expense of HS-SCCH.
Be taken as the initial code sequence number greater than the stop code sequence number and be not 1 o'clock particular value by value for spread spectrum coefficient with spreading code set field among the HS-SCCH, just can indicate re-transmission under the blind check pattern with slight cost, with the existing protocol compatibility, make system allow to carry out conventional H S-DSCH transmission under HS-SCCH Less state, UE can differentiate current HS-PDSCH type that receives and HS-SCCH type automatically.
Further, under the blind check pattern, to UE can with kind number, assignable continuous spreading codes number and the number of time slot of transmission block size limit, simplified the decoding under the HS-SCCH Less state, be specially adapted to professional transmission such as VoIP.
Further, the modulation system of HS-SCCH Less state is fixed as QPSK, though QPSK speed is low, reliability height, decoding are simple, just in time are fit to less but higher to the delay requirement business of packet such as VoIP.
Further, can be with the re-transmission of taking out in 8 bits of the spreading code set field of HS-SCCH under the particular value indication blind check pattern of several bits, and the value of spreading code set field that comprises these several bit particular values is in the supplementary set of routine set, and untapped code word is used for other purposes in the supplementary set of bit that saves and conventional set.
Further, the value of the spreading code set field of HS-SCCH can be taken as 10XX0XXX, so only use three bits just can indicate re-transmission under the blind check pattern, can save 5 bits and be used for other purposes.
Description of drawings
Fig. 1 is the HS-DSCH link circuit self-adapting process of Node B in the prior art;
Fig. 2 is the HS-DSCH link circuit self-adapting process of UE in the prior art;
Fig. 3 is the flow chart of the coding/multiplex process of existing HS-SCCH channel;
Fig. 4 is a HS-SCCH carrier signaling information schematic diagram in the embodiment of the present invention, keeps cyclic sequence number;
Fig. 5 is a HS-SCCH carrier signaling information schematic diagram in the embodiment of the present invention, does not keep cyclic sequence number;
Fig. 6 is the HS-DSCH transmission process flow chart of Node B in the embodiment of the present invention;
Fig. 7 is the HS-DSCH transmission process flow chart of UE in the embodiment of the present invention.
Embodiment
In the following description, in order to make the reader understand the application better many ins and outs have been proposed.But, persons of ordinary skill in the art may appreciate that even without these ins and outs with based on the many variations and the modification of following each execution mode, also can realize each claim of the application technical scheme required for protection.
Among the present invention, when UE is configured to HS-SCCH Less state, whether it still is conventional H S-PDSCH transmission that Node B can determine to adopt HS-SCCH Less pattern to carry out the HS-PDSCH transmission as required, and can retransmit with reference to the ACK/NACK information decision that UE reports.Conventional H S-PDSCH transmission is identical with existing protocol, and HS-SCCH is not followed in the first transmission of HS-SCCH Less pattern HS-PDSCH, and UE receives the required control information of HS-PDSCH and disposed by high level, need carry out the ACK feedback, but does not carry out the NACK feedback; Need follow novel HS-SCCH during re-transmission, need the ACK/NACK feedback, the HS-SCCH type is by the indication of the corresponding bits among the HS-SCCH, and other information bits of HS-SCCH also need to reinterpret.
By the HS-SCCH that the first transmission of cancellation HS-PDSCH is followed, network and UE carry out the HS-DSCH transmission according to prior agreement, can effectively reduce the HS-SCCH expense.The present invention allows to carry out conventional H S-DSCH transmission under HS-SCCH Less state in addition, and UE can differentiate current HS-PDSCH type that receives and HS-SCCH type automatically.The present invention only reinterprets the corresponding bit information of HS-SCCH in the existing protocol, can support novel HS-SCCH, at aspects such as feasibility, compatibility and flexibilities outstanding advantage is arranged all.
For making the purpose, technical solutions and advantages of the present invention clearer, embodiments of the present invention are described in further detail below in conjunction with accompanying drawing.
Core of the present invention is in order to take into account on the compatible basis, by introducing HS-SCCH Less operation, revise down control channel HS-SCCH signaling, the too big problem of HS-SCCH signaling consumption solved the problem that existing HS-SCCH can't indicate HS-SCCH Less to operate simultaneously when the solution existing system carried out the transmission of VoIP and so on business.
The first transmission of HS-SCCH Less pattern HS-DSCH does not send HS-SCCH, and it is pre-configured by high level that UE receives the required control information (the spreading code set information of use, gap information, modulation system information, transport block size information and redundancy version information) of HS-PDSCH.At the business of VoIP and so on, specifically can be provided with as follows:
1) modulation system is made as fixed form, such as QPSK;
2) each UE has only NUM
TBSThe MAC PDU that plants the transmission block size can use;
3) each UE is dispensed to many MaxNum
CCSIndividual continuous spreading codes and MaxNum
TSIndividual time slot;
4) redundancy version information of first transmission is made as fixing.
UE is according to default spread spectrum code group information, gap information and the corresponding HS-PDSCH of modulation system demodulates information, then according to default NUM during first the transmission
TBSKind of transmission block size and fixing redundancy version information are carried out blind decoding, if decoding is correct, and UE feeding back ACK, otherwise feeding back ACK not, and with since the demodulation result storage.
The re-transmission of HS-SCCH Less pattern HS-DSCH need be followed HS-SCCH, but, therefore HS-SCCH Less pattern HS-DSCH must be retransmitted the HS-SCCH and the conventional H S-SCCH that are followed and be distinguished because the UE under the HS-SCCH Less state also can receive conventional H S-SCCH.For keeping and the existing system compatibility, can consider to use the unused code word table of some bit information among the conventional H S-SCCH to show novel HS-SCCH, promptly only change the information multiplexing of step 301 among Fig. 3, and do not change other steps of HS-SCCH cataloged procedure.
Among the conventional H S-SCCH, the initial code sequence number of spreading code set is smaller or equal to stop code sequence number (except the SF=1), and it is redundant therefore to adopt 8 bits to represent that spreading code set information exists, and has some combinations not to be utilized, and belongs to the forbidding code word.In the present invention, utilize parameter K
StartSmaller or equal to K
StopCharacteristic (unless spread spectrum coefficient SF=1, this moment X
Ccs, 1X
Ccs, 2X
Ccs, 3X
Ccs, 4X
Ccs, 5X
Ccs, 6X
Ccs, 7X
Ccs, 8=11110000), by comparing binary number X
Ccs, 1X
Ccs, 2X
Ccs, 3X
Ccs, 4With X
Ccs, 5X
Ccs, 6X
Ccs, 7X
Ccs, 8Size, can transmit (for transmit leg) or judge that whether (for the recipient) current HS-SCCH is the newtype under the HS-SCCH Less operation.If X
Ccs, 1X
Ccs, 2X
Ccs, 3X
Ccs, 4Greater than X
Ccs, 5X
Ccs, 6X
Ccs, 7X
Ccs, 8, and X
Ccs, 1X
Ccs, 2X
Ccs, 3X
Ccs, 4X
Ccs, 5X
Ccs, 6X
Ccs, 7X
Ccs, 8Be not equal to 11110000, can represent that current HS-SCCH is the newtype under the HS-SCCH Less operation.Whether judge current HS-SCCH for the newtype under the HS-SCCH Less operation does not need 8 bits, 3 bits of minimum need get final product (expression X
Ccs, 1X
Ccs, 2X
Ccs, 3X
Ccs, 4Greater than X
Ccs, 5X
Ccs, 6X
Ccs, 7X
Ccs, 8At least 2 bits are as X
Ccs, 1X
Ccs, 2X
Ccs, 3X
Ccs, 4X
Ccs, 5X
Ccs, 6X
Ccs, 7X
Ccs, 8=1XXX0XXX, X represent not utilize, and in order to get rid of SF=1, also need use 1 bit, as X
Ccs, 1X
Ccs, 2X
Ccs, 3X
Ccs, 4X
Ccs, 5X
Ccs, 6X
Ccs, 7X
Ccs, 8=10XX0XXX), 5 unnecessary bits can be used for other purposes; Can certainly use and comprise (at least 3 of several specific bit, whether some or a certain class forbidding code word 8 bits at the most) is indicated current HS-SCCH is newtype under the HS-SCCHLess operation, and the bit of other forbidding code word or saving can be used to indicate potential purposes.
Under the situation of current HS-SCCH, can reinterpret gap information under the conventional H S-SCCH, modulation system information, transmission block size, HARQ information, redundancy version information and new data indication for HS-SCCH Less operation newtype.Because novel HS-SCCH indication is retransmission information, so some information that conventional H S-SCCH is carried can indicate, as:
1) the transmission block size of first transmission has only NUM
TBSKind, therefore novel HS-SCCH only need indicate NUM
TBSKind in the middle of a certain;
2) because HS-SCCH is not followed in first transmission, therefore do not have HARQ information (process number), no longer transmit process number when therefore retransmitting, but the transmitting HARQ pooling information, which transmission block merges in promptly current transmission block and the memory;
3) redundancy version information of number of retransmissions and each re-transmission can be fixed, and promptly only needing the current re-transmission of indication is which time re-transmission gets final product;
4) the new data indication can be omitted;
5) whether cyclic sequence number keeps and can be arranged by agreement.
In sum, novel HS-SCCH need indicate current HS-SCCH Less operation to retransmit spread spectrum code character, time slot and the transmission block size that retransmits, uses for which time, and the HARQ pooling information, its concrete form is arranged by communication protocol, and is promptly known for network and terminal.
With the HS-SCCH type is that HS-SCCH Less operation newtype down is an example, and the newtype form under agreement HS-SCCH Less operates specifies as follows as shown in Figure 4:
1) the newtype designator under the HS-SCCH Less operation might as well be represented with 8 bits, makes X
Type, 1X
Type, 2X
Type, 3X
Type, 4X
Type, 5X
Type, 6X
Type, 7X
Type, 8=10000000;
2) gap information might as well be represented X with 5 bits
Ts, 1X
Ts, 2X
Ts, 3X
Ts, 4X
Ts, 5, at utmost compatible with conventional H S-SCCH;
3) spread spectrum code resources of Shi Yonging might as well be represented X with 8 bits
Ccs, 1X
Ccs, 2X
Ccs, 3X
Ccs, 4X
Ccs, 5X
Ccs, 6X
Ccs, 7X
Ccs, 8
4) transport block size information might as well be represented X with 2 bits
Tbs, 1X
Tbs, 2, promptly predefined NUM at the most
TBSSelect a kind of in=4 kinds of transmission block sizes;
5) number of retransmissions might as well be represented X with 1 bit
Retr, 1, promptly retransmitting for 2 times at the most, 0 (or 1) expression retransmits for the first time, and 1 (or 0) expression retransmits for the second time;
6) the HARQ pooling information might as well be represented X with 3 bits
Ptr, 1X
Ptr, 2X
Ptr, 3If, begin to need s TTI at interval at least from transmission to take place retransmitting, then pooling information can represent a preceding transmission range current TTI be s, s+1 ..., s+7} TTI;
7) cyclic sequence is number identical with conventional H S-SCCH;
8) end mark is number identical with conventional H S-SCCH.
If cyclic sequence number does not keep, then 3 bits of correspondence can be kept, as shown in Figure 5.
Above-mentioned explanation can also have other execution modes, can select a forbidding code word under the conventional H S-SCCH arbitrarily such as the newtype designator under the HS-SCCH Less operation, as 11111110; The 2nd) to the 7th) order can freely arrange, and required bit number can change or the like.
Among the present invention, when carrying out the HS-DSCH transmission under the HS-SCCH Less state, the corresponding handling process of Node B and UE as shown in Figure 6 and Figure 7.
According to Fig. 6, the treatment step of Node B is as follows:
Step S600:Node B decision whether carrying out HS-SCCH Less pattern HS-DSCH transmission is if HS-SCCH Less mode transfer then enters step S601; Otherwise enter step S606.
Step S601:Node B judges whether that the HS-DSCH that carries out under the HS-SCCH Less pattern transmits for the first time, if first transmission then enters step S602, otherwise enters step S604.
Step S602:Node B does not follow HS-SCCH according to the resource and the form transmission HS-DSCH of high level definition.
Step S603:Node B receives the ACK of UE feedback, and flow process finishes.
Step S604:Node B sends novel HS-SCCH, carries out HS-DSCH and retransmits.
Step S605:Node B receives the ACK/NACK of UE feedback, and flow process finishes.
Step S606:Node B sends conventional H S-SCCH, carries out conventional H S-DSCH transmission.
Step S607:Node B receives ACK/NACK, and flow process finishes.
Said process hypothesis has only the newtype under two types of HS-SCCH: conventional H S-SCCH and the HS-SCCHLess operation, otherwise step S601 also need do and further judges whether to be conventional H S-SCCH.
According to Fig. 7, the treatment step of UE is as follows:
Step S700:UE detects HS-SCCH, if receive one's own HS-SCCH, then carries out step S701; Otherwise carry out step S712.
Step S701:UE judges whether the HS-SCCH that receives is the novel HS-SCCH of HS-SCCH Less pattern, if not novel HS-SCCH, then carries out step S702, otherwise carries out step S706.
Step S702: according to the HS-PDSCH of the message pick-up correspondence of conventional H S-SCCH indication.
Step S703: judge that whether this HS-PDSCH receives correct, if receive correctly, then carries out step S704; Otherwise carry out step S705.
Step S704:UE sends ACK, and flow process finishes.
Step S705:UE storage merges soft information, and sends NACK, and flow process finishes.
Step S706:UE receives corresponding HS-PDSCH according to the indication of the novel HS-SCCH of HS-SCCH Less pattern.
Step S707:UE merges information corresponding in the current HS-PDSCH that receives and the memory, and judges whether decoded result is correct, if erroneous results is then carried out step S708; Otherwise carry out step S711.
Step S708:UE judges whether to reach maximum retransmission, if do not reach maximum retransmission, then carries out step S709; Otherwise carry out step S710.
Step S709:UE stores soft pooling information, and sends NACK, and flow process finishes.
Step S710:UE sends NACK, and flow process finishes.
Step S711:UE sends ACK, and flow process finishes.
Step S712:UE carries out corresponding blind decoding according to the configuration that high level is preset.
Step S713:UE judges whether reception result is correct, if erroneous results is then carried out step S714; Otherwise carry out step S715.
Step S714:UE stores demodulation result, and flow process finishes.
Step S715:UE sends ACK, and flow process finishes.
Said process hypothesis has only the newtype under two types of HS-SCCH: conventional H S-SCCH and the HS-SCCHLess operation, otherwise step S701 also need do and further judges whether to be conventional H S-SCCH.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (10)
1. sending method in the time division high speed downlink packet access system is characterized in that, may further comprise the steps:
If the first biography under the blind check pattern then directly sends high speed downlink shared channel HS-DSCH according to predefined configuration, do not follow the transmission high-speed shared control channel HS-SCCH;
If the re-transmission under the blind check pattern then sends HS-SCCH, and the value of the spreading code set field of this HS-SCCH is in the supplementary set of routine set;
If conventional HS-DSCH transmission then sends HS-SCCH, and this HS-SCCH the value of spreading code set field in the routine set;
Described conventional set comprises: the initial code sequence number is less than or equal to the spreading code set field value of stop code sequence number, or spread spectrum coefficient is 1 o'clock a particular value.
2. sending method in the time division high speed downlink packet access system according to claim 1, it is characterized in that, for the re-transmission under the blind check pattern, several bits are set to particular value in 8 bits of the spreading code set field of the HS-SCCH that is sent, and the value of spreading code set field that makes this HS-SCCH is in the supplementary set of routine set, and occurrence is arranged by communication protocol.
3. sending method in the time division high speed downlink packet access system according to claim 1 and 2 is characterized in that, during first biography under the blind check pattern, described predefined configuration is as follows:
Modulation system is made as fixed form;
The kind number of the transmission block size that the kind number of the transmission block size that each subscriber equipment can be used can be used during less than the HS-DSCH of routine transmission;
Assignable continuous spreading codes number and number of time slot when assignable continuous spreading codes number of each subscriber equipment and number of time slot are less than or equal to conventional HS-DSCH transmission;
The redundancy version information of first transmission is made as fixing.
4. sending method in the time division high speed downlink packet access system according to claim 3 is characterized in that described modulation system is fixed as quarternary phase-shift keying (QPSK).
5. sending method in the time division high speed downlink packet access system according to claim 3 is characterized in that, and is further comprising the steps of:
For the first biography under the blind check pattern,, then successfully finish the transmission of the data block that just passed if after just passing, receive affirmation information from subscriber equipment; If pass the overtime affirmation message of not receiving from subscriber equipment in back just, then carry out the re-transmission under the blind check pattern.
6. method of reseptance in the time division high speed downlink packet access system is characterized in that, may further comprise the steps:
When not receiving HS-SCCH, high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH is carried out blind check according to predefined configuration;
If receive HS-SCCH, then the indication according to the HS-SCCH that is received receives HS-PDSCH, if the value of the spreading code set field of this HS-SCCH is the particular value that retransmits under the interior corresponding blind check pattern of the supplementary set of conventional set, then will merge according to this HS-SCCH HS-PDSCH that receives and the demodulation result of preserving because of the blind check mistake;
Described conventional set comprises: the initial code sequence number is less than or equal to the spreading code set field value of stop code sequence number, or spread spectrum coefficient is 1 o'clock a particular value.
7. method of reseptance in the time division high speed downlink packet access system according to claim 6, it is characterized in that, for the re-transmission under the blind check pattern, the value of the spreading code set field of the HS-SCCH that is received is in the supplementary set of routine set, and several bits are particular value in 8 bits, and occurrence is arranged by communication protocol.
8. according to method of reseptance in claim 6 or the 7 described time division high speed downlink packet access systems, it is characterized in that described predefined configuration is as follows:
Modulation system is made as fixed form;
The kind number of the transmission block size that the kind number of the transmission block size that each subscriber equipment can be used can be used during less than the HS-DSCH of routine transmission;
Assignable continuous spreading codes number and number of time slot when assignable continuous spreading codes number of each subscriber equipment and number of time slot are less than or equal to conventional HS-DSCH transmission;
The redundancy version information of first transmission is made as fixing.
9. method of reseptance in the time division high speed downlink packet access system according to claim 8 is characterized in that described modulation system is fixed as quarternary phase-shift keying (QPSK).
10. method of reseptance in the time division high speed downlink packet access system according to claim 8 is characterized in that, and is further comprising the steps of:
If described blind check success then to the network-feedback confirmation, otherwise is preserved demodulation result and not to network feedback information.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102860112A (en) * | 2010-08-12 | 2013-01-02 | 高通股份有限公司 | Cqi reporting of td-scdma multiple usim mobile terminal during hsdpa operation |
| CN103220691A (en) * | 2012-01-21 | 2013-07-24 | 中兴通讯股份有限公司 | Sending method and detecting method of downlink control information, base station and user equipment |
| CN105594274A (en) * | 2014-01-29 | 2016-05-18 | 华为技术有限公司 | Data transmission method and device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433716C (en) * | 2005-08-16 | 2008-11-12 | 中兴通讯股份有限公司 | System and method for supporting multi-carrier downlink high-speed data packet access |
| CN100352243C (en) * | 2005-08-19 | 2007-11-28 | 中兴通讯股份有限公司 | TD-SCDMA system multi-carrier high-speed downstream packet access realization method |
-
2008
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102860112A (en) * | 2010-08-12 | 2013-01-02 | 高通股份有限公司 | Cqi reporting of td-scdma multiple usim mobile terminal during hsdpa operation |
| CN103220691A (en) * | 2012-01-21 | 2013-07-24 | 中兴通讯股份有限公司 | Sending method and detecting method of downlink control information, base station and user equipment |
| CN105594274A (en) * | 2014-01-29 | 2016-05-18 | 华为技术有限公司 | Data transmission method and device |
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