CN101350701B - Method and system for scheduling HSDPA resource - Google Patents
Method and system for scheduling HSDPA resource Download PDFInfo
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Abstract
The present invention discloses a method of scheduling HSDPA resources, and a system thereof. The method comprises the following steps: a Node B determines the HSDPA resources allocated for a UE, and identifies the effective continuous period of scheduling to be adopted as different lengths according to various conditions of the wireless link; the Node B informs the UE of the allocated HSDPA resources and the effective continuous period of scheduling through the HS-SCCH; when the HSDPA resources come into effect, the Node B transmits MAC-hs PDU; the UE reads N MAC-hs PDUs transmission blocks which are transmitted by N TTIs. According to the information on the HS-SCCH, the results received by the scheduling data are returned to the Node B through the HS-SICH; and N is the number of the TTIs in the effective continuous period of scheduling. The system comprises the and the UE; wherein, the Node B comprises an allocation determining unit, an allocation transmitting unit and a data transmitting unit; the UE comprises a data reading unit and a confirmation returning unit. In the method, the Node B can regulate the effective continuous period of scheduling according to the current state of the wireless link, so as to efficiently improve the utilization efficiency of the HS-SCCH resources.
Description
Technical field
The present invention relates to communication technical field, particularly relate to the method that a kind of scheduling high speed down grouping inserts (HSDPA, High Speed Downlink Packet Access) resource.
Background technology
In 3G (Third Generation) Moblie (The Third Generation is called for short " 3G ") standard,, the HSDPA technology has been proposed in order to satisfy the demand that increases rapidly to the high-speed mobile data service.The main feature of this technology is to have taked Adaptive Modulation and Coding technology (AMC, Adaptive Modulation andCoding), mix automatic request retransmission mechanism (HARQ, HybridAutomatic-Repeat-Request) and resource-sharing mechanism, so that obtain bigger capacity, reduce and postpone and obtain higher peak rate.
The high-speed data service carrying of HSDPA is main to realize transmission by high speed descending sharing channel (HS-DSCH, High Speed Downlink Shared Channel).HS-DSCH is the dedicated channel of HSDPA.HS-DSCH is a transmission channel, and the physical channel that is mapped to by it claims high-speed physical downlink shared channel (HS-PDSCH) (HS-PDSCH, High Speed Physical Downlink Shared Channel).In addition, HS-DSCH has corresponding shared control channel respectively in uplink and downlink, be that up HS-DSCH shares information channel (HS-SICH, Shared Information Channel forHS-DSCH) and descending HS-DSCH shared control channel (HS-SCCH, Shared ControlChannel for HS-DSCH).HS-SCCH is the down control channel of HSDPA special use, is used to carry the control information of all bottoms, mainly comprises customer equipment identification (UE-ID, User EquipmentIndicator), relevant informations such as TFRI, H-ARQ; Wherein, UE-ID is used to identify the affiliated user equipment (UE) of current control information; TFRI mainly comprises the sign indicating number and assignment information, modulation scheme information and the transmission block size of time slot; The H-ARQ relevant information mainly comprises procedural information, redundancy version information and the new data indication information etc. of H-ARQ.
In the method for the scheduling HSDPA resource of prior art, adopt Fixed Time Interval-an a Transmission Time Interval (TTI, Transmission Time Interval) effectively continues the cycle as scheduling, promptly once dispatch every a TTI, and once scheduling can only send the data of a TTI, promptly once scheduling can only send a MAC-hs protocol Data Unit (MAC-hs PDU, MAC-hs ProtocolData Unit) transmission block.And, when sending new data transmission block, always needing at first to notify UE by HS-SCCH at every turn, ensuing data send the control information of being adopted.The HSDPA scheduling scheme of prior art exists following several shortcoming:
1) under the more stable situation of Radio Link, as occasions such as suburb or rural areas, because rapid fading is not clearly, Node B can be the user device transmissions downlink data with a stable resource distribution always, if all transmit identical configuration information by high-speed shared control channel HS-SCCH at every turn, thereby causing the utilization ratio of HS-SCCH to reduce, is not very necessary therefore, but also can bring UE owing to continuous monitoring to HS-SCCH, cause the increase of power consumption.
2) in the time of the Radio Link acute variation, because the link circuit condition when new transformat or modulating mode always transmit according to the last time obtains, and because the acute variation of link, new transmission mode may not be fit to current link well, even the situation that crest and trough are cancelled out each other might appear being similar to, therefore, the Radio Link dispatching algorithm in some cases, The faster the better is not absolute in scheduling.
3) owing to during each emission data, all must notify UE by HS-SCCH, thus when making a plurality of subscriber equipment of scheduling, must the many groups of configuration HS-SCCH, in some cases, as 1) in situation about mentioning, this has caused the waste of resource.
Summary of the invention
In view of this, the invention provides a kind of method of scheduling HSDPA resource, utilize this method, Node B can be according to the actual state of current wireless link, and the scheduling of being adopted when adjusting scheduling effectively continues the length in cycle.
In order to achieve the above object, technical scheme of the present invention is achieved in that
A kind of method of scheduling HSDPA resource wherein, comprising:
Described method, wherein, described according to different wireless link condition, the scheduling that desire is adopted effectively continues the cycle and is defined as different length and is: described Node B effectively continues corresponding relation between the Cycle Length according to predefined, wireless link condition and scheduling, and the effectively lasting cycle of scheduling that desire is adopted is defined as different length.
Described method, wherein, described according to different wireless link condition, the scheduling that desire is adopted effectively continues the cycle and is defined as different length and is: described Node B is selected according to it, the success rate of transfer of data is defined as different length with the effectively lasting cycle of scheduling that desire adopts in a plurality of TTI of past.
Described method, the effectively lasting cycle of scheduling that wherein, described Node B is selected according to it, the success rate of transfer of data adopts desire in a plurality of TTI of past is defined as different length and comprises:
Judge and work as described success rate selected, the interior transfer of data of a plurality of TTI of past greater than predefined rise thresholding, by predefined rise step-length the scheduling of current use is effectively continued after the cycle raises, obtain the length that scheduling that described desire adopts effectively continues the cycle;
Judge and work as described success rate selected, the interior transfer of data of a plurality of TTI of past less than predefined downward modulation thresholding, after by predefined downward modulation step-length the scheduling of current use effectively being continued the cycle downward modulation, obtain the length that scheduling that described desire adopts effectively continues the cycle.
Described method wherein, is back to success rate Node B, that the reception result of data in described selected, a plurality of TTI of past determined transfer of data in described selected, a plurality of TTI of past according to described subscriber equipment.
Described method, wherein, in described step 102, described Node B is carried the length that described scheduling effectively continues the cycle by information field effective period that increases newly in described HS-SCCH.
Described method, wherein, in the described step 102, described scheduling is effectively continued the length in cycle by before the HS-SCCH notifying user equipment in described Node B, also comprise, described Node B effectively continues corresponding relation between the Cycle Length according to the value and the scheduling of predefined effective period of information field, and the value of information field is arranged to the corresponding state of length in the cycle that effectively continues with described definite scheduling with described effective period.
Described method, wherein, in the step 103, described Node B sends MAC-hs protocol Data Unit transmission block respectively to subscriber equipment on first to N TTI.
Described method, wherein, in the described step 104, described subscriber equipment carries the affirmation result of described N MAC-hs protocol Data Unit transmission block by the automatic request retransmission validation of information of the mixing that is provided with among the described HS-SICH/non-affirmation field, wherein, the automatic request retransmission validation of information of described mixing/non-affirmation field has the length of N bit at least.
Described method, wherein, in the described step 104, also comprised before the described B of return node as a result that this data dispatching is received: the N bit in the automatic request retransmission validation of information with described mixing/non-affirmation field, the affirmation result who is set to N MAC-hs protocol Data Unit sending with described Node B on first to N TTI is corresponding.
A kind of system of scheduling HSDPA resource wherein, comprises Node B and subscriber equipment,
Wherein, described Node B comprises:
The configuration determining unit is used for definite HSDPA resource to user device configuration, and according to different wireless link condition, the effectively lasting cycle of scheduling that desire is adopted is defined as different length;
The configuration transmitting element is used for the described HSDPA resource of user device configuration and the length in effectively lasting cycle of described scheduling of giving that described configuration determining unit is determined is passed through the HS-SCCH notifying user equipment;
Data transmission unit is used for sending MAC-hs protocol Data Unit transmission block to subscriber equipment when the described configuration that described configuration transmitting element is sent to described subscriber equipment comes into force for the HSDPA resource of subscriber equipment;
Described subscriber equipment comprises:
Data-reading unit, be used for according to described Node B length that be sent to it, that described HS-SCCH goes up the HSDPA resource of configuration and dispatches the effectively lasting cycle, read N the N that TTI transmitted MAC-hs protocol Data Unit transmission block on the indicated HS-PDSCH of the HSDPA resource of described configuration continuously, wherein, described N is the number that described definite scheduling effectively continues the Transmission Time Interval that comprises in the cycle;
Confirm that the result returns the unit, be used for the result according to described data-reading unit reading of data, the result that this data dispatching is received is back to Node B by HS-SICH.
Described system, wherein, described configuration transmitting element also comprises: the unit is set effective period, be used for according to predefined effective period information field value and scheduling effectively continue corresponding relation between the Cycle Length, with increase newly among the described HS-SCCH effective period information field value be arranged to effectively continue the corresponding state of Cycle Length with the scheduling of determining.
Described system, wherein, described affirmation result returns the unit and also comprises: confirm that the result is provided with the unit, the automatic request retransmission validation of information of the mixing/non-affirmation field that is used for HS-SICH is set to: the affirmation result of the MAC-hs PDU that sends on first to N TTI with Node B is corresponding.
This shows that the present invention has following advantage:
The method of scheduling HSDPA resource of the present invention, when Node B when dispatching, give the resources such as code channel of the modulating mode of UE, transmission block size, coded system and correspondence except determining configuration, also can be according to the actual state of current wireless link, adjust the length that scheduling effectively continues the cycle, the number of the MAC-hs PDU transmission block that makes Node B to be adjusted to be sent to UE when once dispatching, thereby improved the HS-SCCH efficiency of resource more efficiently, reduced the configured number of HS-SCCH and HS-SICH.
Description of drawings
Fig. 1 is the schematic flow sheet of method of the scheduling HSDPA resource of one embodiment of the invention;
Fig. 2 is in the method for scheduling HSDPA resource of one embodiment of the invention, determines that according to the success rate of transfer of data in a plurality of TTI in past scheduling effectively continues the schematic flow sheet in cycle;
Fig. 3 is the basic block diagram of system of the scheduling HSDPA resource of one embodiment of the invention;
Fig. 4 is a kind of structural representation of specific implementation of system of the scheduling HSDPA resource of one embodiment of the invention;
Fig. 5 is the structural representation of another kind of specific implementation of system of the scheduling HSDPA resource of one embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
In the method for scheduling HSDPA resource of the present invention, Node B is as scheduler, except adaptively resources such as modulation system, coding and code channel being configured the adjustment, also can be according to the actual conditions of Radio Link, the scheduling of adopting when adjusting each the scheduling effectively continues the length in cycle, promptly adjusts the HSDPA resources effective cycle to the UE configuration.
Fig. 1 is the method schematic diagram of the scheduling HSDPA resource of one embodiment of the invention.As Fig. 1, the method for the scheduling HSDPA resource of the embodiment of the invention comprises:
In this step 101, can utilize the several different methods of prior art to realize resource to UE configuration HSDPA, purpose of the present invention does not lie in how to dispose the HSDPA resource to UE.For determining that the scheduling that desire adopts under current wireless link effectively continues the cycle, Node B can be according to the feedback of user terminal and more before historical information, for example, can feed back to the channel quality indication (CQI of Node B according to user terminal from HS-SICH, Channel Quality Indicator), the information such as user terminal location that measure owing to scheduling overtime data block of losing, Node B of Node B, determine that the scheduling of adopting effectively continues the cycle.Exemplarily, Fig. 2 show a kind of basis selected, the success rate of transfer of data is determined the scheduling flow process in effective lasting cycle in a plurality of TTI of past.Particularly, see also following detailed description to Fig. 2.In specific implementation, each device fabrication producer can use various algorithms to realize effectively continuing determining of cycle to dispatching.In addition, also can utilize the several different methods of prior art to estimate earlier the situation of current wireless link, determine effective lasting cycle of this scheduling according to predefined, wireless link condition with the corresponding relation that scheduling effectively continues between the cycle length then.Exemplarily, for example, when the current wireless link situation more stable, the time, the cycle that scheduling effectively can be continued be provided with longer; When current wireless link changes when relatively more violent, the cycle that scheduling effectively can be continued be provided with shorter; Wherein, stable or the variation of wireless link condition is violent, can determine with default stable thresholding by the value of the steadiness parameter that relatively is provided with, represent Radio Link stability, when the value of this parameter greater than preset first when stablizing thresholding, determine that the current wireless link situation is more stable; When the value of this parameter is stablized thresholding less than default second, determine that the current wireless link changed condition is more violent.
In the specific implementation, effectively lasting cycle of the scheduling notice UE that will determine in order to utilize HS-SCCH to realize, embodiments of the invention carry this scheduling information in effectively lasting cycle by increase information field effective period on the basis of existing HS-SCCH frame structure.Thereby, in step 102, NodeB can carry this by this of information field effective period and determine that scheduling of adopting effectively continues Cycle Length information, and this, span of number N of TTI of being comprised of length and effectively lasting cycle of scheduling of information field was corresponding effective period.
Because the UMTS system comprises multiple standard: 3.84Mcps FDD, 3.84Mcps TDD and 1.28Mcps TDD etc. are that example is introduced with 1.28Mcps TDD scheme only in an embodiment of the present invention.
Particularly, original control information Bit String that the effective period that increases newly in the frame structure of HS-SCCH, information field can level be associated among the HS-SCCH to be comprised last, it also can be arranged in other any position of HS-SCCH.This, length of information field can be 3 bits effective period, also can be any length that needs.Length when being 3 bits when this of information field can be expressed as it: x effective period
Vp, 1, x
Vp, 2, x
Vp, 3, span be 1,2 ..., 8} shows that promptly the portable scheduling of this information field effective period effectively continues the TTI number that the cycle can comprise and is: 1 to 8.Following table 1 show this 3 bit effective period information field value.As table 1, as this effective period of information field x
Vp, 1, x
Vp, 2, x
Vp, 3Got 100 o'clock, the TTI number that the effectively lasting cycle of the scheduling of its corresponding correspondence comprises is 5, correspondingly, in step 104, high-speed physical downlink shared channel (HS-PDSCH) (the HS-PDSCH that the HSDAP resource of the last configuration of HS-SCCH is indicated, High Speed Physical Downlink Shared Channel) will come into force in 5 TTI continuously, subscriber equipment will read 5 MAC-hs PDU transmission blocks that transmit respectively on these 5 TTI continuously.Therefore,, determine that it is that scheduling effectively continues the TTI number that the cycle comprises at 5 o'clock when in step 101, correspondingly, in step 102, Node B should effective period information field be set to 100 state.Certainly, when this effective period, information field was 5 bits, its span be 1,2 ..., 32}.When this field was other length, situation was similar, did not repeat them here.
| x vp，1，x vp，2，x vp，3 | Scheduling effectively continues the TTI number that the cycle comprises |
| 000 | 1 |
| 001 | 2 |
| 010 | 3 |
| 011 | 4 |
| 100 | 5 |
| 101 | 6 |
| 110 | 7 |
| 111 | 8 |
Table 1
For improving transmission quality, to carry out coding/multiplexing flow process of HS-SCCH by the new control information of HS-SCCH that effectively lasting cycle information of the scheduling that newly-increased effective period, field was carried and the original control information of HS-SCCH constitute, its concrete encoding scheme that adopts is same as the prior art, remains unchanged.
There is following restriction: nHS-SCCH 〉=3 time slot in the time interval that scheduling effectively continues between first effective HS-PDSCH time slot of cycle and the HS-SCCH, be after UE receives HS-SCCH, at least want 3 time slots at interval, the pairing HS-PDSCH time slot of first TTI of the last indication of HS-SCCH just can come into force, and promptly HS-SCCH goes up to dispose and just can come into force for the HSDPA resource of UE.After coming into force, Node B just sends MAC-hs PDU to UE.The time slot does not here comprise DwPTS and these special time slots of UpPTS.
Because UE is in the scheduling process of Node B, when scheduling effectively continues to comprise a plurality of TTI in the cycle, may receive a plurality of MAC-hs PDU transmission blocks, for example, when the effectively lasting cycle of scheduling comprised N TTI, subscriber equipment can be received N MAC-hs PDU transmission block.In this case, correspondingly, in step 104, subscriber equipment need return the reception result of all these transmission blocks on HS-SICH Node B, comprises affirmation/non-affirmation (ACK/NACK) information.When UE correctly receives these transmission blocks, return affirmation (ACK) information; When UE fails correctly to receive these transmission blocks, return non-affirmation (NACK) information.
In an embodiment of the present invention, there is following restriction: nHS-SICH 〉=9 time slot in time between the emission opportunity of HS-SICH and last the HS-PDSCH time slot on last TTI, be that subscriber equipment is behind last time slot of receiving on N the TTI, at least 9 time slots at interval again could be at the ACK/NACK that distributes to N the transmission block that transmission was received just now on the HS-SICH of subscriber equipment.The time slot does not here comprise DwPTS and these special time slots of UpPTS.
For realizing that UE can return the reception result of N the MAC-hs PDU that transmits by HS-SICH, to Node B on N TTI, in an embodiment of the present invention the frame structure of HS-SICH is revised, increased the length of mixing automatic request retransmission validation of information/non-affirmation (HARQ InformationACK/NACK) field, made it can indicate reception result a plurality of MAC-hs PDU.And it is corresponding that the length of this HARQ Information ACK/NACK field and HS-SCCH go up the span of newly-increased effective period of information field.For example, the span of the TTI number that the effectively lasting cycle of the scheduling that the effective period that increases newly when HS-SCCH is last, information field indicated comprises is { 1,2, ..., during N}, can be respective N-bit by 1 original D-bit modification with the automatic request retransmission validation of information of the mixing in the HS-SICH frame structure/non-affirmation (HARQInformation ACK/NACK) field.For example, when the effective period on the HS-SCCH, field was 3 bits, be { 1 because the scheduling that effective period, field indicated effectively continues the span of the TTI number that the cycle comprises, 2, ..., 8}, this HARQ InformationACK/NACK field can be set to 8 bits.The HARQ InformationACK/NACK field list of this 8 bit is shown: x
An, 1, x
An, 2..., x
An, 8, wherein:
x
An, 1: be illustrated in the affirmation result that first TTI goes up the MAC-hs PDU that sends;
x
An, 2: be illustrated in the affirmation result that second TTI goes up the MAC-hs PDU that sends;
x
An, 8: be illustrated in the affirmation result that the 8th TTI goes up the MAC-hs PDU that sends.
When the length of HARQ Information ACK/NACK field is 8 bits, if N＜8, then as k〉during N, x
An, kTo always be set to 0, if promptly there are not 8 MAC-hs PDU, then unnecessary bit will be filled to 0.UE is before sending HS-SICH, and it is corresponding that HARQ InformationACK/NACK field is set to the affirmation result of the MAC-hsPDU that sends with Node B on first to N TTI earlier, and then HS-SICH is sent to Node B.
In order on HS-SICH, to send above-mentioned affirmation result and other control information, need encode with multiplexing to HS-SICH, before HS-SICH is multiplexing, respectively indication (CQI, Channel Quality Indicator) field of the channel quality among the HS-SICH and Hybrid-ARQ informationACK/NACK field are encoded.Wherein, the HARQinformation ACK/NACK Bit String x of 8 bits (bit) of the embodiment of the invention
An, 1, x
An, 2..., x
An, 8Better resisting interference 1 rank (32,8) Reed-Muller encoder can be encoded into 32bit with it, so that certainly, also can adopt other multiple encoding scheme.Wherein, when table 2 shows the HARQ informationACK/NACKACK/NACK Bit String employing Reed-Muller encoder encodes of 8 bits, available a kind of code book sequence.
| ?i | M i，0 | M i，1 | M i，2 | M i，3 | M I，4 | M i，5 | M i，6 | M i，7 |
| 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| 1 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 |
| 2 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 |
| 3 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 |
| 4 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 0 |
| 5 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 6 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 1 |
| 7 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 1 |
| 8 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 1 |
| 9 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 0 |
| 10 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 0 |
| 11 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 1 |
| 12 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 1 |
| 13 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 0 |
| 14 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 |
| 15 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
| 16 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 |
| 17 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 |
| 18 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 |
| 19 | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 1 |
| 20 | 0 | 1 | 1 | 0 | 1 | 1 | 0 | 0 |
| 21 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 |
| 22 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 |
| 23 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 |
| 24 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 0 |
| 25 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 |
| 26 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 |
| 27 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
| 28 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 29 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 30 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| 31 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 |
Table 2
In specific implementation, Node B can be determined the effectively lasting cycle of scheduling that desire adopts when dispatching next time by the success rate of transfer of data in selected, a plurality of TTI of is past carried out statistical analysis, wherein, this success rate span can be 0 ..., 1}.Exemplary but not as restrictedly, Fig. 2 shows in an embodiment of the present invention, an example of the effectively lasting Cycle Length of scheduling of desire employing when determining the next time scheduling according to the success rate of transfer of data in the past S TTI.In this example, suppose span that scheduling effectively continues the TTI number that comprises in the cycle for 1,2 ..., 8}.As Fig. 2, in one embodiment of the invention, the scheduling that desire adopts when determining that according to the success rate of transfer of data in the past S TTI dispatch next time effectively continues the method in cycle, comprising:
Step 201, Node B statistics success rate selected, the interior transfer of data of a past S TTI;
Step 202, Node B judges that whether this success rate is greater than the predefined scheduling rise thresholding in effectively lasting cycle; In this way, execution in step 203 then; Otherwise, execution in step 204;
Step 203, the TTI number that the effectively lasting cycle of the scheduling that desire adopted when Node B determined next the scheduling comprises is min{VP
Current+ U
Step, 8}, wherein, VP
CurrentThe scheduling of representing current use effectively continues the number of the TTI that the cycle comprises, U
StepThe rise step-length of the TTI number that the default effectively lasting cycle of scheduling of expression comprises, then, execution in step 207;
Step 204, Node B judges that whether this success rate is less than the predefined scheduling downward modulation thresholding in effectively lasting cycle; In this way, execution in step 205 then; Otherwise, execution in step 206;
Step 205, the number of the TTI that the effectively lasting cycle of the scheduling of Node B setting scheduling next time comprises is max{VP
Current-D
Step, 1}, wherein, D
StepThe downward modulation step-length of the TTI number that the default effectively lasting cycle of scheduling of expression comprises, wherein, this reduces step-length less than the rise step-length in the step 203, then, execution in step 207;
Step 206, the length in the effectively lasting cycle of scheduling of employing is identical with the length in the effectively lasting cycle of scheduling of current use during Node B definite next time of scheduling, it is identical that the i.e. scheduling adopted of when scheduling next time effectively continues the TTI number that TTI number that the cycle comprises and effectively lasting cycle of the scheduling of current use comprise, and is VP
Current
Step 207, Node B will send the scheduling of adopting when dispatching this next time of determining and effectively continue the cycle to subscriber equipment in scheduling next time on HS-SCCH;
Step 208 finishes this flow process.
Wherein, in this embodiment, when dispatching for the first time, can adopt the effectively lasting cycle of predefined scheduling to dispatch earlier.
In this embodiment, can utilize that UE returns, as the affirmation result of the data transmission block that receives to be come calculated data transmission success rate.For example, can utilize following formula to calculate success rate s-rate selected, the interior transfer of data of a past S TTI,
S-rate=(UE return, among the affirmation result to data in selected this S TTI, affirmation result's number) divided by S;
That is, s-rate=(UE return, among the affirmation result to data in selected this S TTI, the number of ACK) divided by S.
And other standard that comprises for the UMTS system, 3.84Mcps FDD, 3.84Mcps TDD, though the frame structure of its HS-SCCH and HS-SICH is different with 1.28Mcps TDD, but similarly, it all is by increase information field effective period on the basis of the existing HS-SCCH frame structure of each standard, make Node B to carry scheduling effective period and effectively continue cycle information by this of information field, and the length of the HARQ Information ACK/NACK field by revising HS-SICH, come correspondingly, make subscriber equipment to return its affirmation result to Node B by HS-SICH to a plurality of transmission blocks of being sent to it with amended HS-SCCH.
The present invention also provides a kind of system of scheduling HSDPA resource.Fig. 3 is the structural representation of system of the scheduling HSDPA resource of one embodiment of the invention.As Fig. 3, the system 300 of the scheduling HSDPA resource of one embodiment of the invention comprises: Node B 301 and subscriber equipment 302, wherein, described Node B comprises: configuration determining unit 303, be used for definite HSDPA resource to user device configuration, and according to different wireless link condition, the effectively lasting cycle of scheduling that desire is adopted is defined as different length; Configuration transmitting element 304 is used for the described HSDPA resource and the length in effectively lasting cycle of scheduling of giving user device configuration that described configuration determining unit is definite, by the HS-SCCH notifying user equipment; Data transmission unit 305 is used for sending MAC-hs protocol Data Unit transmission block to subscriber equipment when the described configuration that described configuration transmitting element is sent to described subscriber equipment comes into force for the HSDPA resource of subscriber equipment;
Described subscriber equipment 302 comprises: data-reading unit 306, be used for according to described Node B length that be sent to it, that described HS-SCCH goes up the HSDPA resource of configuration and dispatches the effectively lasting cycle, read N the N that TTI transmitted MAC-hs protocol Data Unit transmission block on the indicated HS-PDSCH of the HSDPA resource of this configuration continuously, wherein, described N is the number that described definite scheduling effectively continues the Transmission Time Interval that comprises in the cycle; Confirm that the result returns unit 307, be used for the result according to described data-reading unit reading of data, the result that this data dispatching is received is back to Node B by HS-SICH.
As Fig. 4, further, in the system of the scheduling HSDPA resource of one embodiment of the invention, configuration transmitting element 304 also comprises: unit 401 is set effective period, be used for according to predefined effective period information field value and scheduling effectively continue corresponding relation between the Cycle Length, with increase newly among the described HS-SCCH effective period information field value be arranged to and current definite scheduling effectively continues the corresponding state of Cycle Length.
As Fig. 5, further, in the system of the scheduling HSDPA resource of one embodiment of the invention, confirm that the result returns unit 307 and also comprises: confirm that the result is provided with unit 501, the automatic request retransmission validation of information of the mixing/non-affirmation field that is used for HS-SICH is set to: the reception result of the MAC-hs PDU that sends on first to N TTI with Node B is corresponding.
Utilize method of the present invention or system, Node B can be according to the actual conditions of current wireless link, be adjusted at the number of the MAC-hs PDU transmission block that is sent to UE when once dispatching, thereby improved the HS-SCCH efficiency of resource more efficiently, reduced the configured number of HS-SCCH and HS-SICH.Especially when Radio Link is more stable, scheduling can be set effectively continue the cycle and comprise a plurality of TTI, this has reduced subscriber equipment and has monitored HS-SCCH and the spent electric energy of emission HS-SICH.And, owing to once can transmit a plurality of MAC-hs PDU, accordingly, the each scheduling of Node B can be dispatched judgement according to more historical information, thereby can be more effectively according to the variation of link circuit condition, carry out the physical layer scheduling more targetedly, thereby improve service data transmitting efficiency.When HS-SCCH/HS-SICH is dispatching in the term of validity, owing to do not need to continue to transmit scheduling/confirmation of former UE, therefore, can continue to be used for scheduling controlling channel, thereby reach the result who efficiently utilizes HS-SCCH/HS-SICH as other subscriber equipmenies by Node B.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (13)
1. the method for a scheduling HSDPA resource is characterized in that, comprising:
Step 101, Node B is determined the HSDPA resource to user device configuration, and according to different wireless link condition, the effectively lasting cycle of scheduling that desire is adopted is defined as different length;
Step 102, Node B effectively continues the length in cycle by the HS-SCCH notifying user equipment with described definite HSDPA resource of giving user device configuration and scheduling;
Step 103, when described configuration came into force for the HSDPA resource of subscriber equipment, Node B sent MAC-hs protocol Data Unit transmission block to subscriber equipment;
Step 104, subscriber equipment is according to described Node B length that be sent to it, that HSDPA resource distribution on the described HS-SCCH and scheduling effectively continue the cycle, read N the N that Transmission Time Interval transmitted MAC-hs protocol Data Unit transmission block on the indicated HS-PDSCH of HSDPA resource that described configuration gives it continuously, and the result that this data dispatching is received is back to Node B by HS-SICH, wherein, described N is the number that described definite scheduling effectively continues the Transmission Time Interval that comprises in the cycle.
2. method according to claim 1, it is characterized in that, described according to different wireless link condition, the scheduling that desire is adopted effectively continues the cycle and is defined as different length and is: described Node B effectively continues corresponding relation between the Cycle Length according to predefined, wireless link condition and scheduling, and the effectively lasting cycle of scheduling that desire is adopted is defined as different length.
3. method according to claim 1, it is characterized in that, described according to different wireless link condition, the scheduling that desire is adopted effectively continues the cycle and is defined as different length and is: described Node B is selected according to it, the success rate of transfer of data is defined as different length with the effectively lasting cycle of scheduling that desire adopts in a plurality of Transmission Time Intervals of past.
4. method according to claim 3 is characterized in that, the effectively lasting cycle of scheduling that described Node B is selected according to it, the success rate of transfer of data adopts desire in a plurality of Transmission Time Intervals of past is defined as different length and comprises:
Judge and work as described success rate selected, the interior transfer of data of a plurality of Transmission Time Intervals of past greater than predefined rise thresholding, by predefined rise step-length the scheduling of current use is effectively continued after the cycle raises, obtain the length that scheduling that described desire adopts effectively continues the cycle;
Judge and work as described success rate selected, the interior transfer of data of a plurality of Transmission Time Intervals of past less than predefined downward modulation thresholding, after by predefined downward modulation step-length the scheduling of current use effectively being continued the cycle downward modulation, obtain the length that scheduling that described desire adopts effectively continues the cycle.
5. method according to claim 4, it is characterized in that, be back to success rate Node B, that the reception result of data in described selected, a plurality of Transmission Time Intervals of past determined transfer of data in described selected, a plurality of Transmission Time Intervals of past according to described subscriber equipment.
6. according to each described method among the claim 1-5, it is characterized in that in described step 102, described Node B is carried the length that described scheduling effectively continues the cycle by information field effective period that increases newly in described HS-SCCH.
7. method according to claim 6, it is characterized in that, in the described step 102, described scheduling is effectively continued the length in cycle by before the HS-SCCH notifying user equipment in described Node B, also comprise, described Node B effectively continues corresponding relation between the Cycle Length according to the value and the scheduling of predefined effective period of information field, and the value of information field is arranged to the corresponding state of length in the cycle that effectively continues with described definite scheduling with described effective period.
8. according to each described method among the claim 1-5, it is characterized in that in the step 103, described Node B sends MAC-hs protocol Data Unit transmission block respectively to subscriber equipment on first to N Transmission Time Interval.
9. method according to claim 8, it is characterized in that, in the described step 104, described subscriber equipment carries the affirmation result of described N MAC-hs protocol Data Unit transmission block by the automatic request retransmission validation of information of the mixing that is provided with among the described HS-SICH/non-affirmation field, wherein, the automatic request retransmission validation of information of described mixing/non-affirmation field has the length of N bit at least.
10. method according to claim 9, it is characterized in that, in the described step 104, also comprised before the described B of return node as a result that this data dispatching is received: the N bit in the automatic request retransmission validation of information with described mixing/non-affirmation field, the affirmation result who is set to N MAC-hs protocol Data Unit sending with described Node B on first to N Transmission Time Interval is corresponding.
11. the system of a scheduling HSDPA resource is characterized in that, comprises Node B and subscriber equipment,
Wherein, described Node B comprises:
The configuration determining unit is used for definite HSDPA resource to user device configuration, and according to different wireless link condition, the effectively lasting cycle of scheduling that desire is adopted is defined as different length;
The configuration transmitting element is used for the described HSDPA resource of user device configuration and the length that described scheduling effectively continues the cycle of giving that described configuration determining unit is definite, by the HS-SCCH notifying user equipment;
Data transmission unit is used for sending MAC-hs protocol Data Unit transmission block to subscriber equipment when the described configuration that described configuration transmitting element is sent to described subscriber equipment comes into force for the HSDPA resource of subscriber equipment;
Described subscriber equipment comprises:
Data-reading unit, be used for according to described Node B length that be sent to it, that described HS-SCCH goes up the HSDPA resource of configuration and dispatches the effectively lasting cycle, reading on the indicated HS-PDSCH of the HSDPA resource of described configuration N continuously passes and steals N the MAC-hs protocol Data Unit transmission block that the time interval transmits, wherein, described N is the number that described definite scheduling effectively continues the Transmission Time Interval that comprises in the cycle;
Confirm that the result returns the unit, be used for the result according to described data-reading unit reading of data, the result that this data dispatching is received is back to Node B by HS-SICH.
12. system according to claim 11, it is characterized in that, described configuration transmitting element also comprises: the unit is set effective period, be used for according to predefined effective period information field value and scheduling effectively continue corresponding relation between the Cycle Length, with increase newly among the described HS-SCCH effective period information field value be arranged to effectively continue the corresponding state of Cycle Length with the scheduling of determining.
13. according to claim 11 or 12 described systems, it is characterized in that, described affirmation result returns the unit and also comprises: confirm that the result is provided with the unit, the automatic request retransmission validation of information of the mixing/non-affirmation field that is used for HS-SICH is set to: the reception result of the MAC-hs PDU that sends on first to N Transmission Time Interval with Node B is corresponding.
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| JP5349683B2 (en) | 2009-04-27 | 2013-11-20 | ▲ホア▼▲ウェイ▼技術有限公司 | Method and apparatus for switching |
| CN101594689B (en) * | 2009-06-29 | 2011-08-10 | 中兴通讯股份有限公司 | Method and device for scheduling user data |
| CN102811488B (en) * | 2011-05-31 | 2016-11-02 | 南京中兴新软件有限责任公司 | Resource regulating method, device and system |
| CN102223219B (en) * | 2011-06-16 | 2017-07-18 | 中兴通讯股份有限公司 | HARQ ACK feedback method for treating and system |
| TWI665926B (en) * | 2014-01-30 | 2019-07-11 | 新力股份有限公司 | Telecommunications apparatus and methods |
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| CN1434641A (en) * | 2002-01-21 | 2003-08-06 | 杨鸿文 | Resource scheduling techology without channel quality information feedback |
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