CN101568153B - Method and device for transmitting small packet services in real time - Google Patents
Method and device for transmitting small packet services in real time Download PDFInfo
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Abstract
The invention discloses a method and a device for transmitting small packet services in real time, which solves the problems existing in the prior art that when a base station transmits new service data to UE each time, the base station transmits downlink control information by HS-SCCH, as a result, the cost of a control channel is too big. The method comprises the following steps that: the base station transmits the downlink control information by the HS-SCCH to inform the UE to monitor shared physical resources of HS-PDSCH at multiple continuous transmission time intervals TTI of HS-PDSCH and indicate a first physical resource necessarily monitored by the UE; the base station transmits the service data to the UE on the first physical resource; and because the base station transmits the downlink control information by the HS-SCCH to inform the UE to monitor shared physical resources of HS-PDSCH at multiple continuous transmission time intervals TTI of the HS-PDSCH, the cost of the HS-SCCH control channel is reduced.
Description
Technical field
The invention belongs to communication technical field, particularly a kind of transmission method of real-time small packet service and device.
Background technology
Existing HSDPA (High Speed Downlink Packet Access; The high speed downlink packet access) in the technology; HS-SCCH (Shared Control Channel for HS-DSCH, High-Speed Shared Control Channel, wherein; HS-DSCH is: High Speed Downlink Shared Channel; High speed descending sharing channel) is used to carry the scheduling and the control information of HS-PDSCH (High Speed Physicai Downlink Shared Channel, high-speed physical downlink shared channel (HS-PDSCH)), to each HS-PDSCH TTI (TransmissionTime Interval; Transmission Time Interval); (User Equipment, subscriber equipment) Downlink Control Information of the UE that is scheduled that HS-SCCH carries has: the TFRI of 13bits (Transport Format ResourceIndicator, transport format resource indication); The transformat of indication HS-PDSCH subsequently; Comprise time-slot code channel information, the modulation system (1bit) of HS-PDSCH, the TBS of transmission block (Transport-blockSize, transmission block size) information (6bits), the HARQ information that comprises HARQ (Hybrid Automatic Repeat reQuest mixes automatic repeat requests) process number (3bits), redundancy versions (3bits), new data indication (1bit); And HCSN (the HS-SCCH cyclic sequencenumber that is used for the estimation of HS-SCCH quality; HS-SCCH cyclic sequence number) sequence (3bits), ID sign H-RNTI (HS-DSCHRadio Network Temporary Identifier, HS-DSCH Radio Network Temporary Identifier) (16bits), are used to distinguish the different UEs on the shared channel; HS-SCCH also carries TPC/SS (TransmissionPower Control/, through-put power control) in addition, is used for the uplink synchronous and the power control of HS-SICH (Shared Information Channel forHS-DSCH, high-speed shared information channel).Take the code channel of two SF16 behind the HS-SCCH coding.
Each shared channel in the HSDPA technology all meets certain timing relationship, and Fig. 1 is the timing relationship of each shared channel and the control procedure sketch map that carries out through HS-SCCH in the existing HSDPA technology.Fig. 1 shows 4 frames (each frame both had been a HS-PDSCH TTI) length, representes with n frame to the n+3 frame respectively, comprises 7 TS (Time Slot, time slot) in each frame length.The 7th time slot at the n frame sends first control information through HS-SCCH; What this control information was indicated is that the 3rd time slot of n+1 frame begins to send business datum through HS-PDSCH; UE returns the reception condition of first control information to the base station through HS-SICH at the 2nd time slot of n+3 frame; And send second control information in the 7th time slot base station of n+2 frame through HS-SCCH, the 3rd business datum that time slot begins to send through HS-PDSCH of the corresponding n+3 frame of this control information, n
HS-SCCHWhat the time interval was represented is through the control information of HS-SCCH transmission and the time interval of passing through the business datum of HS-PDSCH transmission, and n
HS-SICHWhat the time interval was represented is through the business datum of HS-PDSCH transmission and the time interval of passing through the feedback information of HS-SICH transmission.In the HSDPA technology, each shared channel all meets timing relationship shown in Figure 1.
HSDPA shared channel timing relationship and the process controlled through HS-SCCH are: downlink service data arrives behind the NodeB through scheduling; NodeB sends Downlink Control Information at HS-SCCH earlier; Indicate the downlink data that UE is arranged on the follow-up HS-DSCH; UE need continue to monitor for the HS-SCCH of its configuration to NodeB, after understanding HS-SCCH and correctly receiving the transmission block that loads business datum, utilizes corresponding HS-SICH feeding back ACK/NACK (affirmation/non-affirmation) information.
The FDD of Re17 (Frequency Division Duplex; FDD) system is in order to support the real-time small packet service transmission; Adopted the mode of operation of HS-SCCH-less, to reduce the expense of HS-SCCH, its main feature is: fixing QPSK (the Quadrature Phase Shift Keying that adopts; QPSK) modulation, redundancy versions adopt predefined mode and the number of transmissions to bind, define four kinds of TBS (Transport Block Size in advance for UE; Transmission block size), monitor the HS-PDSCH resource, these physical resources are that a plurality of different UEs are shared through RRC (Radio Resource Control, Radio Resource control) signaling UE; All directly send on these physical resources to the data that this UE transmits first the base station, does not promptly send through HS-SCCH.UE carries out blind decoding to the business datum on these resources in each TTI; The CRC of HS-PDSCH (Cyclic Redundancy Check; CRC) partly which UE carries out mask with UE ID sends to designation data; In case UE decodes correctly then feeding back ACK, otherwise saves the data in the buffer memory, does not carry out any feedback.Why decoding error does not carry out any feedback, mainly is that a kind of of UE decoding error possibly be that business datum is issued this UE, the failure but the bad result of channel condition decodes because the physical resource of these monitorings is multiple users share; Another kind possibly be that data are not issued this UE, so UE decoding failure.During re-transmission; Downlink Control Information is sent through HS-SCCH earlier in the base station; Indication UE retransmits physical resource, TBS, re-transmission sequence number and PTR (the Previous Tx point that takies; Last time transmitted pointer), this pointer be used for indicating this re-transmission be to before the re-transmission carried out of the misdata of which TTI.
The deficiency of above prior art is: the base station is all passed through HS-SCCH at every turn and is sent Downlink Control Information when UE sends the new business data, and the control channel expense that causes is excessive.
Summary of the invention
The present invention provides a kind of transmission method of real-time small packet service, exists the base station when UE sends the new business data, all to pass through HS-SCCH transmission Downlink Control Information in the prior art in order to solve at every turn, and the excessive problem of control channel expense that causes.
The transmission method of a kind of real-time small packet service provided by the invention comprises: network side is monitored the physical resource of the high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH that shares through radio resource control RRC signaling user terminal UE, and indicates second physical resource of the required monitoring of UE; Or the physical resource that Downlink Control Information notice UE monitors the HS-PDSCH that shares is sent through HS-SCCH in the base station, and second physical resource of the required monitoring of indication UE;
Business datum is sent to UE in the base station on second physical resource;
The physical resource of the required monitoring of UE is confirmed to change according to the scheduling strategy that pre-sets in the base station;
Downlink Control Information notice UE monitors the HS-PDSCH that shares in continuous a plurality of HS-PDSCH Transmission Time Interval TTI physical resource is sent through HS-SCCH in the base station, and first physical resource of the required monitoring of indication UE;
Business datum is sent to UE in the base station on first physical resource.
The transmitting device of a kind of real-time small packet service provided by the invention comprises:
First notification module: be used for sending Downlink Control Information notice UE monitors the HS-PDSCH that shares in continuous a plurality of HS-PDSCH Transmission Time Interval TTI physical resource through HS-SCCH, and first physical resource of the required monitoring of indication UE;
First sending module: be used on first physical resource of first notification module indication, sending business datum to UE;
Second notification module: be used for sending the physical resource that Downlink Control Information notice UE monitors the HS-PDSCH that shares through HS-SCCH, and second physical resource of the required monitoring of indication UE;
Second sending module: the physical resource that is used for monitoring through radio resource control RRC signaling user terminal UE the high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH that shares at network side; And send business datum to UE on second physical resource of the required monitoring of indication UE, or
On second physical resource of second notification module indication, send business datum to UE;
Change determination module:, confirm to change the physical resource of the required monitoring of UE according to the scheduling strategy that pre-sets;
Said first notification module: also be used for confirming what physical resource changed according to the change determination module; Send Downlink Control Information notice UE monitors the HS-PDSCH that shares in continuous a plurality of HS-PDSCH Transmission Time Interval TTI physical resource through HS-SCCH, and first physical resource of the required monitoring of indication UE.
Beneficial effect of the present invention is following: because Downlink Control Information notice UE monitors the HS-PDSCH that shares in continuous a plurality of HS-PDSCH Transmission Time Interval TTI physical resource is sent through HS-SCCH in the base station, make HS-SCCH control channel expense reduce.
Description of drawings
Fig. 1 is the timing relationship of each shared channel and the control procedure sketch map that carries out through HS-SCCH in the existing HSDPA technology;
Fig. 2 is the first embodiment of the invention method flow diagram;
Fig. 3 is a first embodiment of the invention base station side method flow diagram;
Fig. 4 is a first embodiment of the invention end side method flow diagram;
Fig. 5 is a second embodiment of the invention device sketch map.
Embodiment
Describe below in conjunction with the accompanying drawing specific embodiments of the invention; The embodiment of the invention is an example with the TDD system only; Because key point of the present invention does not relate to the characteristic of TDD system; Therefore be applicable to also in FDD system or other system that being implemented in the TDD system is an embodiment preferred, can not represent whole intention of the present invention.
First embodiment of the invention is a kind of transmission method of real-time small packet service, as shown in Figure 2 comprising:
Step 102: network side is monitored the physical resource of the HS-PDSCH that shares through radio resource control RRC signaling user terminal UE, and indicates UE to monitor the 1-8 code channel of time slot 4.
Be specially: network side passes through RRC (control of Radio Resource Control Radio Resource) signaling UE:
The HS-PDSCH physical resource that UE need monitor: before the base station does not change the resource of UE monitoring, can directly on these physical resources, send the new business data (indication new business data are meant and are different from the non-re-transmission business datum that retransmits business datum) of this UE here;
The code channel number that limited several kinds of transmission blocks size TBS (Transport Block Size) and every kind of transmission block size take is 4 or 8;
Several Physical Resource Block; And with these physical resource block numbers, with the sequence number of Physical Resource Block and corresponding time slot, code channel (like #1: time slot 5 1-4 code channels, #2: time slot 5 5-9 code channels; #3: time slot 4 9-16 code channels; Be physical resource) notice UE, these Physical Resource Block can be indicated through the Downlink Control Information that HS-SCCH carries as the transmission first or the re-transmission of HS-PDSCH business datum.
One group of HS-SCCH that UE need monitor.
Step 104: business datum is sent to UE in the base station on time slot 4 1-8 code channels, and simultaneously, UE monitors the HS-PDSCH physical resource on the time slot 4 1-8 code channels, and carries out blind decoding with some kinds of TBS of high-rise indication.In case the UE decoding is correct, then feeding back ACK; Otherwise do not feed back, and save the data in the buffer memory.
Step 106: when UE had the packets need of a burst to send, the size and the time that needs transmission of this packet were estimated in the base station, and decision does not re-use the packet that time slot 4 1-8 code channels send this burst according to dispatching algorithm.
Use method provided by the invention, the base station can be adjusted the physical resource that UE monitors at any time.
Step 108: Downlink Control Information notice UE monitors the shared HS-PDSCH of each UE in 3 continuous HS-PDSCH Transmission Time Interval TTI physical resource is sent through HS-SCCH in the base station, and indication UE monitors time slot 5 1-4 code channels.
In this step, also can not specify the quantity of TTI, promptly Downlink Control Information notice UE is sent in TTI that timing relationship is confirmed and later all TTI thereof through HS-SCCH in the base station, monitors the physical resource of the HS-PDSCH that each UE shares.
Step 110: the packet that happens suddenly is sent to UE in the base station on time slot 5 1-4 code channels.
Certainly in step 102; Network side is an illustrated examples through the physical resource that radio resource control RRC signaling user terminal UE monitors HS-PDSCH; As replacement scheme also can be: Downlink Control Information notice UE be sent at the physical resource of monitoring the HS-PDSCH that shares through HS-SCCH in the base station, and indication UE monitors time slot 4 1-8 code channels.This all is that technology well known to those skilled in the art repeats no more here.
For more detailed description technical scheme of the present invention, describe through following instance, existing UE monitors time slot 4 1-8 code channels, and is as shown in Figure 3 for base station side, comprising:
Step 202: know the packets need transmission that a burst is arranged.
Step 204: estimate the size and the time that needs transmission of this packet, judge whether to use time slot 4 1-8 code channels to send the packet of burst according to dispatching algorithm, if execution in step 206, otherwise execution in step 208.
Step 206: use time slot 4 1-8 code channels to send the packet of burst.
Step 208: judge whether to be Iterim Change in limited (as 3) TTI, the physical resource that the packet of transmitting burst takies, if execution in step 210 then, otherwise execution in step 222.
Step 210: send Downlink Control Information notice UE in ensuing 3 TTI through HS-SCCH, interim packet in time slot 5 1-4 code channels reception burst, and notice is carried the TBS of first data block of the packet that happens suddenly.
Step 212: judge whether to receive the ACK feedback of UE to first data block, if then execution in step 234, otherwise execution in step 214.
Step 214: judge whether to receive the NACK feedback of UE to first data block, if, execution in step 216, otherwise execution in step 220.
Step 216: judge whether to retransmit,, otherwise think that the data packet transmission of burst finishes if then execution in step 218.
Step 218: send Downlink Control Information notice UE in the 1st TTI that timing relationship is confirmed through HS-SCCH, receive retransmission data packet may at time slot 5 5-9 code channels temporarily, and notice decoding and pooling information, retransmit the packet of burst again.
Step 220: think to judge whether the incorrect Downlink Control Information that receives of UE to send this packet to UE again, if then this packet is sent as new data packets.
Step 222: send Downlink Control Information notice UE in ensuing TTI through HS-SCCH, receive the packet of burst, and notify the TBS of first data block of the packet that carries burst at time slot 5 1-4 code channels.
Step 224: judge whether to receive the ACK feedback of UE to each packet, if then execution in step 236, otherwise execution in step 226.
Step 226: judge whether to receive the NACK feedback of UE to each packet, if, execution in step 228, otherwise execution in step 232.
Step 228: judge whether to retransmit,, otherwise think that the data packet transmission of burst finishes if then execution in step 230.
Step 230: send Downlink Control Information notice UE in the 1st TTI that timing relationship is confirmed through HS-SCCH; Receive packet at time slot 5 1-4 code channels (or time slot 5 5-8 code channels) temporarily; And the packet of burst is retransmitted in notice decoding and pooling information again.
Step 232: think to judge whether the incorrect Downlink Control Information that receives of UE to send this packet to UE again, if then this packet is sent as new data packets.
Step 234: this end of transmission block, UE monitors on time slot 5 1-4 code channels in ensuing the 2nd and the 3rd TTI.
Step 236: this end of transmission block, UE receive this data block on time slot 5 1-4 code channels in ensuing TTI.
For more detailed description technical scheme of the present invention, to describe through following instance, existing network side specifies UE to monitor time slot 4 1-8 code channels, has the packets need of a burst to send, and is as shown in Figure 4 for end side, comprising:
Step 302: blind decoding on the time slot 4 1-8 code channels of network side appointment receives business datum.
Step 304: one group of HS-SCCH that the listens for network side is distributed through the RRC signaling.
After step 306:HS-SCCH decoding was correct, judgement was the new business data through RSN indication in the HS-SCCH transmission Downlink Control Information, if then execution in step 308, otherwise execution in step 326.
Step 308: judge that the base station is whether only effective in limited (as 3) TTI to the adjustment of transfer resource first, if execution in step 310 then, otherwise execution in step 318.
Step 310: in first TTI that timing relationship is confirmed; Monitor the time slot 5 1-4 code channels that send the Downlink Control Information indication through HS-SCCH; The packet of the burst of carrying on the receiving slot 5 1-4 code channels, and according to the TBS decoding of Downlink Control Information indication.
Step 312: judge whether that decoding is correct, if feeding back ACK then, otherwise feedback NACK is kept at business datum in the buffer memory.
Step 314: in second, the 3rd TTI afterwards, continue to monitor time slot 5 1-4 code channels, the packet of the burst of carrying on the receiving slot 5 1-4 code channels, and carry out blind decoding.
Step 316: in the TTI after the 3rd TTI, monitor time slot 4 1-8 code channels, on time slot 4 1-8 code channels, carry out the blind decoding of new data.
Step 318: the physical resource of monitoring is changed into the time slot 5 1-4 code channels that send the Downlink Control Information indication through HS-SCCH by time slot 4 1-8 code channels.
Step 320: in first TTI that timing relationship is confirmed, according to the TBS decoding of Downlink Control Information indication.
Step 322: judge whether that decoding is correct, if feeding back ACK then, otherwise feedback NACK is kept at business datum in the buffer memory.
Step 324: in the TTI after first TTI; Monitor the time slot 5 1-4 code channels that send the Downlink Control Information indication through HS-SCCH; The packet of the burst of carrying on the receiving slot 5 1-4 code channels, and the code channel number that adopts every kind of transmission block size of RRC signaling to take is 4 or 8 to carry out blind decoding.
Step 326: in first TTI that timing relationship is confirmed, receive through HS-SCCH and send the retransmission data packet may of carrying on the time slot 4 9-16 code channels of Downlink Control Information indication, and merge decoding.
Step 328: judge whether that decoding is correct, if feeding back ACK then, otherwise feedback NACK is kept at business datum in the buffer memory.
Utilize method of the present invention, the base station can be adjusted the physical resource that UE monitors at any time, and be divided into again according to different demands: one, the base station is the physical resource that Iterim Change UE monitors in certain several TTI; Two, the base station is to change the physical resource that UE continues monitoring.
If the base station is the resource that Iterim Change UE monitors in certain several TTI; UE passes through HS-SCCH behind correct reception Downlink Control Information so; The physical resource that the resource of change monitoring is indicated for the Downlink Control Information that carries through HS-SCCH in that TTI that confirms according to timing relationship and in the ensuing N-1 TTI; And the business datum that receives in the decoded information (TBS) that carries according to HS-SCCH that TTI that timing relationship is confirmed is decoded; If correctly then carrying out the ACK feedback, decoded result carries out the NACK feedback; In an ensuing N-1 TTI, UE carries out blind decoding on the physical resource of the Downlink Control Information indication of carrying through HS-SCCH.In the later TTI of N TTI, UE still carries out the blind decoding of new business data on the physical resource of monitoring before the adjustment of base station.
If the base station is to change the physical resource that UE continues monitoring; UE is behind the correct Downlink Control Information that receives through the HS-SCCH carrying so; Change be after continue the physical resource monitored, in TTI that timing relationship is confirmed and later TTI thereof, all on the physical resource that the Downlink Control Information that carries through HS-SCCH is indicated, carry out the reception of new data.UE decodes according to the decoded information (TBS) that HS-SCCH carries in that TTI that timing relationship is confirmed, if decoded result is correct, then carries out the ACK feedback, otherwise, carry out the NACK feedback.After TTI in, on the physical resource of HS-SCCH indication, carry out blind decoding.
Because the base station can be distributed the physical resource of continuous and effective through HS-SCCH; If the Downlink Control Information that passes through the HS-SCCH carrying that therefore send the base station is not correctly received by UE; So in ensuing TTI; UE can not change the physical resource of transmission first (both network side was through the physical resource of RRC signaling UE monitoring) of monitoring; And the data of sending this UE can be gone up at the physical resource of new indication (physical resource of the Downlink Control Information indication of carrying through HS-SCCH) in the base station, cause that this UE can't correctly receive the new business transfer of data of sending through HS-PDSCH before the base station changes physical resource once more.In order to address this problem; Can handle by following mode: certain UE of Downlink Control Information adjustment that carry through HS-SCCH the base station continues the physical resource of monitoring; And after having sent a packet on these resources; Wait for the feedback of UE, before ACK that receives UE or NACK message, do not send other packet of this UE.If according to timing relationship, received ACK or the NACK feedback of object UE, then after on the physical resource of the new indication of the Downlink Control Information that carries through HS-SCCH the direct new data packets of this UE of transmission; If according to timing relationship; Any feedback of UE is not received in the base station; Again determine whether that then the physical resource that needs to change transmission first takies; If send the HS-SCCH Downlink Control Information through HS-SCCH again, otherwise go up the new data packets of directly sending this UE at the physical resource (both network side was through the physical resource of RRC signaling UE monitoring) of indication first.
Do not send Downlink Control Information through HS-SCCH for the base station, and directly on the physical resource of UE monitoring, pass through the business datum that HS-PDSCH sends first transmission, UE does not then carry out any feedback as if decoding correctly then feeding back ACK message if receive mistake.For the transfer of data of base station through the Downlink Control Information indication of HS-SCCH carrying, the correctness of no matter decoding, UE feeds back.
When above-mentioned all UE feeding back ACKs or NACK, feedback is used for the HS-PDSCH channel is carried out closed power control to the power control command word TPC of HS-PDSCH channel simultaneously.
In order to support such scheme; Need a kind of new HS-SCCH channel architecture of design; The Downlink Control Information of its carrying comprises: the HS-PDSCH physical resource: the physical resource, the TBS Index that are used to indicate HS-PDSCH: be used to indicate transmission block size, RSN (Retransmission Sequence Number re-transmission sequence number): be used to indicate business data transmission number of times, PTR (Pointer To the previoustransmission) pointer: the quantity and the UE ID that are used to represent a plurality of TTI: be used to identify UE.Wherein, In order to reduce the bit number that is used to indicate the HS-PDSCH physical resource as far as possible; Adopt the method for indication Physical Resource Block sequence number; Be that UE distributes several Physical Resource Block through high-level signaling in advance promptly, the line number of going forward side by side is only indicated the Physical Resource Block sequence number through the Downlink Control Information that HS-SCCH sends; The bit number of TBS depends on the high-rise big or small number of transmission block for the UE distribution; RSN depends on the maximum transmission times of permission, if allow at most once to retransmit, then RSN needs 1 bit, and it is both to be non-re-transmission business datum 0 time that this bit is put 0 expression number of retransmissions; If allow maximum twice or three re-transmissions, then RSN needs 2 bits, the non-re-transmission business datum of 00 expression, and 01 expression retransmits business datum for the first time, and 10 represent to retransmit for the second time business datum, and 11 expressions retransmit business datum for the third time; The bit number of PTR pointer depends on the maximum transmission time interval that allows between twice transmission and is the quantity of the Physical Resource Block of a UE distribution.When RSN indicating services data re-transmission, PTR be used for representing be to before the re-transmission of data in which TTI.When RSN indicating services data are transmitted for the first time; Be used to represent the quantity of a plurality of TTI, as bit number be 3:001 represent the quantity of TTI be 2,010 the expression TTI quantity be 3; The quantity of 111 expression TTI is a plurality of for infinitely, is carried on the descending code channel of a SF16 behind above-mentioned all information codings.
The physical resource that utilizes this HS-SCCH both can Iterim Change UE in N TTI, to monitor also can change the physical resource that UE monitors in all TTI afterwards.Above-mentioned which kind of situation no matter, what the last RSN of HS-SCCH represented is new data transmission so that with retransmit Resources allocation and distinguish mutually, represent the physical source distributing situation through the different values of PTR.This be because, PTR be used for indicating be to before data in which TTI retransmit, nonsensical for new data transmission.For example PTR is 3 bits; And define the interim physical resource of monitoring that in a TTI, changes of PTR=' 000 ' expression in advance; The interim physical resource of monitoring that in two TTI, changes of PTR=' 001 ' expression; Change the physical resource of monitoring in the unlimited TTI of PTR=' 111 ' expression, by that analogy.When RSN represented new data, the different values of PTR and the effective time of resource allocation and resource allocation formed corresponding relation at interval, told UE through the mode of predefine or high-level signaling notice.So, after UE correctly received HS-SCCH, what judge at first whether RSN represent was new data, if judge the base station according to PTR again and require the physical resource monitored.
Network side is that UE has distributed several kinds of limited TBS through the RRC signaling, and HS-SCCH is last to indicate corresponding transmission block size with TBSindex.When the base station utilized the physical resource that HS-SCCH Iterim Change UE monitors in N TTI, TBS had also indicated first transmission block size on this resource simultaneously; If the base station is to change the physical resource that UE continues monitoring, then the TBS on that HS-SCCH is only effective to first transmission block, and UE carries out blind decoding afterwards.
Utilize this HS-SCCH can also the data of error of transmission be retransmitted, retransmit resource only in the TTI that timing relationship is confirmed effectively, the UE correctness of decoding all feeds back.HS-SCCH has indicated the transmission block size simultaneously.
HS-SCCH of the present invention no longer adopts closed power control, but confirms transmitting power by the base station.
Second embodiment of the invention is a kind of transmitting device of real-time small packet service, as shown in Figure 5 comprising:
First notification module 402: be used for sending Downlink Control Information notice UE monitors the HS-PDSCH that shares in continuous a plurality of HS-PDSCH Transmission Time Interval TTI physical resource through HS-SCCH, and first physical resource of the required monitoring of indication UE;
First sending module 404: be used on first physical resource of first notification module, 402 indications, sending business datum to UE.
Further this device also comprises:
Second notification module 406: be used for sending the physical resource that Downlink Control Information notice UE monitors the HS-PDSCH that shares through HS-SCCH, and second physical resource of the required monitoring of indication UE;
Second sending module 408: the physical resource that is used for monitoring through radio resource control RRC signaling user terminal UE the high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH that shares at network side; And send business datum to UE on second physical resource of the required monitoring of indication UE, or
On second physical resource of second notification module, 406 indications, send business datum to UE;
Change determination module 410:, confirm to change the physical resource of the required monitoring of UE according to the scheduling strategy that pre-sets;
This first notification module 402: also be used for confirming according to what 410 pairs of physical resources of change determination module changed; Send Downlink Control Information notice UE monitors the HS-PDSCH that shares in continuous a plurality of HS-PDSCH Transmission Time Interval TTI physical resource through HS-SCCH, and first physical resource of the required monitoring of indication UE.
Further, change determination module 410: also be used for according to the scheduling strategy that pre-sets, confirm to change the physical resource of the required monitoring of UE in first TTI that confirms according to timing relationship and limited the TTI afterwards thereof.
Further, change determination module 410: also be used for according to the scheduling strategy that pre-sets, confirm to change the physical resource of the required monitoring of UE in first TTI that confirms according to timing relationship and the TTI afterwards thereof.
Further, this device also comprises: power determination module 412: the transmitting power that is used for confirming HS-SCCH.When sending Downlink Control Information through HS-SCCH, first notification module 402 and second notification module 406 confirm the transmitting power of HS-SCCH by power determination module 412.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (18)
1. the transmission method of a real-time small packet service is characterized in that, comprises the steps:
Network side is monitored the physical resource of the high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH that shares through radio resource control RRC signaling user terminal UE, and indicates second physical resource of the required monitoring of UE; Or,
The physical resource that Downlink Control Information notice UE monitors the HS-PDSCH that shares is sent through HS-SCCH in the base station, and second physical resource of the required monitoring of indication UE;
Business datum is sent to UE in the base station on second physical resource;
The physical resource of the required monitoring of UE is confirmed to change according to the scheduling strategy that pre-sets in the base station;
Downlink Control Information notice UE monitors the HS-PDSCH that shares in continuous a plurality of HS-PDSCH Transmission Time Interval TTI physical resource is sent through HS-SCCH in the base station, and first physical resource of the required monitoring of indication UE;
Business datum is sent to UE in the base station on first physical resource.
2. the method for claim 1 is characterized in that, said continuous a plurality of TTI are specially: first TTI that confirms according to timing relationship and limited TTI afterwards thereof.
3. method as claimed in claim 2 is characterized in that,
After UE correctly receives Downlink Control Information;
UE monitors first physical resource in first and limited TTI afterwards thereof;
In the TTI of UE after continuous a plurality of TTI, monitor second physical resource.
4. method as claimed in claim 3 is characterized in that,
UE in first TTI that confirms according to timing relationship, monitor the first physical resource step after;
UE receives the business datum on first physical resource in first TTI;
UE decodes according to the TBS of Downlink Control Information indication, if decoded result is correctly to base station feedback ACK, otherwise feedback NACK;
Among limited the TTI of UE after first TTI, after continuing to monitor the first physical resource step;
UE after limited TTI in receive the business datum on first physical resource;
UE carries out blind decoding;
In the TTI of UE after continuous a plurality of TTI, monitor second physical resource.
5. the method for claim 1 is characterized in that, said a plurality of TTI are specially: first TTI that confirms according to timing relationship and TTI afterwards thereof.
6. method as claimed in claim 5 is characterized in that,
After UE correctly receives Downlink Control Information;
UE monitors first physical resource in first TTI that confirms according to timing relationship;
Among the TTI of UE after first TTI, monitor first physical resource.
7. method as claimed in claim 6 is characterized in that,
UE in first TTI that confirms according to timing relationship, monitor the first physical resource step after;
UE decodes according to the TBS of Downlink Control Information indication, if decoded result is correctly to base station feedback ACK, otherwise feedback NACK;
Among the TTI of UE after first TTI, monitor the first physical resource step after;
UE adopts the transmission block size of RRC signaling to carry out blind decoding.
8. like claim 4 or 7 described methods, it is characterized in that,
The base station does not receive that UE is directed against the ACK or the NACK feedback of business datum in first TTI, judges that UE does not correctly receive Downlink Control Information;
Then further judge whether to continue to send business datum to UE at first physical resource;
If then the base station resends Downlink Control Information through HS-SCCH, otherwise on second physical resource, send business datum to UE.
9. like claim 4 or 7 described methods; It is characterized in that; Said UE when base station feedback nack message or ACK information, also passes through HS-SICH to the emissive power control command word of base station feedback to HS-PDSCH through HS-SICH, and the TPC of HS-SICH is carried by HS-PDSCH.
10. the method for claim 1; It is characterized in that said Downlink Control Information comprises: RSN and PTR pointer, said RSN: be used to indicate the business data transmission number of times; Said PTR pointer: when RSN indicating services data are transmitted for the first time; Be used to represent the quantity of a plurality of TTI, when RSN indicating services data re-transmission, be used to represent the quantity of TTI between twice business data transmission.
11. the method for claim 1 is characterized in that, said Downlink Control Information comprises: the physical resource indication: be used to indicate the physical resource of HS-PDSCH, transmission block size TBS Index: be used to indicate the transmission block size, UE sign: be used to identify UE.
12. method as claimed in claim 11; It is characterized in that; Downlink Control Information notice UE monitors the HS-PDSCH that shares in continuous a plurality of HS-PDSCH Transmission Time Interval TTI physical resource is sent through HS-SCCH in the base station; And before first physical resource of the required monitoring of indication UE, also comprise:
Network side distributes a plurality of physical resources for UE in advance, and notifies UE through high-level signaling with the corresponding sequence number of a plurality of physical resources and each physical resource, and said sequence number is carried in the base station on HS-SCCH, the indication physical resource.
13. method as claimed in claim 12 is characterized in that, it is on 16 the code channel that said Downlink Control Information is carried on a spreading factor.
14. the method for claim 1 is characterized in that, the transmitting power of said HS-SCCH is confirmed by the base station.
15. the transmitting device of a real-time small packet service is characterized in that, comprising:
First notification module: be used for sending Downlink Control Information notice UE monitors the HS-PDSCH that shares in continuous a plurality of HS-PDSCH Transmission Time Interval TTI physical resource through HS-SCCH, and first physical resource of the required monitoring of indication UE;
First sending module: be used on first physical resource of first notification module indication, sending business datum to UE;
Second notification module: be used for sending the physical resource that Downlink Control Information notice UE monitors the HS-PDSCH that shares through HS-SCCH, and second physical resource of the required monitoring of indication UE;
Second sending module: the physical resource that is used for monitoring through radio resource control RRC signaling user terminal UE the high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH that shares at network side; And send business datum to UE on second physical resource of the required monitoring of indication UE, or
On second physical resource of second notification module indication, send business datum to UE;
Change determination module:, confirm to change the physical resource of the required monitoring of UE according to the scheduling strategy that pre-sets;
Said first notification module: also be used for confirming what physical resource changed according to the change determination module; Send Downlink Control Information notice UE monitors the HS-PDSCH that shares in continuous a plurality of HS-PDSCH Transmission Time Interval TTI physical resource through HS-SCCH, and first physical resource of the required monitoring of indication UE.
16. device as claimed in claim 15 is characterized in that, the change determination module: also be used for according to the scheduling strategy that pre-sets, confirm to change the physical resource of the required monitoring of UE in first TTI that confirms according to timing relationship and limited the TTI afterwards thereof.
17. device as claimed in claim 15 is characterized in that, the change determination module: also be used for according to the scheduling strategy that pre-sets, confirm to change the physical resource of the required monitoring of UE in first TTI that confirms according to timing relationship and the TTI afterwards thereof.
18. device as claimed in claim 15 is characterized in that, also comprises the power determination module: the transmitting power that is used for confirming HS-SCCH.
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