CN101753274A - Resource scheduling method, system and equipment in time division duplex high speed downlink packet access (TDD HSDPA) system - Google Patents
Resource scheduling method, system and equipment in time division duplex high speed downlink packet access (TDD HSDPA) system Download PDFInfo
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Abstract
The invention relates to the technical field of mobile communication, in particular to a resource scheduling technology in a time division duplex high speed downlink packet access (TDD HSDPA) system. The invention provides resource scheduling method and system in the TDD HSDPA system, which are used for improving system capacity and transmission rate, reducing bit error rate, and saving space interface resources. The resource scheduling method comprises the steps of: selecting a modulation and coding mode of each downlink time slot by a base station Node B referring a channel quality indicator (CQI) of each downlink time slot reported by user equipment (UE), wherein the CQI of each downlink time slot is determined by channel quality estimation by the UE according to downlink data received in each downlink time slot; transmitting the modulation and coding mode of each downlink time slot, which is carried in scheduling control information, to the UE by the Node B, wherein the scheduling control information indicates that the UE receives the downlink data; and transmitting the downlink data to the UE within each downlink time slot by the Node B according to the modulation and coding mode of each downlink time slot. The invention also provides a base station and user equipment.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to the scheduling of resource technology in the TDD HSDPA system.
Background technology
3GPP (3rd Generation Partnership Project, 3G (Third Generation) Moblie standardization body) the R5 version has been introduced HSDPA (High Speed Downlink Packet Access, high speed downlink packet inserts) technology, the HSDPA technology is applicable to TD-SCDMA (Time Division Synchronized CodeDivision Multiple Access, time-division synchronous CDMA system).The HSDPA technology is by AMC (Adaptive Modulation and Coding, adaptive modulation and coding), HARQ (HybridAutomatic Repeat Request, hybrid automatic retransmission request) series of key techniques such as, and in NodeB (base station), introduce MAC-hs (Media Access Control), can realize that NodeB is to different UEs (User Equipment, subscriber equipment) fast dispatch obtains higher user's peak rate and cell data throughput simultaneously.The core concept of AMC technology is channel quality indication (the Channel Quality Indicator that NodeB reports with reference to UE, CQI), and in conjunction with the operating position of Internet resources, select best down link modulation and coded system, to determine the transmission rate of downlink data, thereby increase the data throughout of UE as much as possible, reduce propagation delay time.
In the HSDPA technology, transmission channel HS-DSCH (High Speed Downlink Shared Channel, high speed descending sharing channel) is used to transmit the downlink data that sends to UE; HS-DSCH is mapped to HS-PDSCH (High Speed Packet Downlink Shared Channel in physical layer,) on the high-speed physical downlink shared channel (HS-PDSCH), the spreading factor of the channel code that each HS-PDSCH uses is fixed as 16, and promptly HS-PDSCH can be divided into the parallel transmission code channel of 16 downlink datas.The HS-SCCH of physical layer (HighSpeed Shared Control Channel, High-Speed Shared Control Channel) is used to carry the scheduling control information of HS-DSCH, the HS-SICH of physical layer (High Speed Shared Information Channel, high-speed shared information channel) is used to carry the feedback information of HS-DSCH.
TD-SCDMA adopts TDD (Time Division Duplex; time division duplex) mode; the subframe of TD-SCDMA (SubFrame) structure as shown in Figure 1; the subframe of each 5ms is divided into conventional time slot TS0～TS6 and 3 special time slot DwPTS (Downlink Pilot Time Slot of 7 0.675ms; descending pilot frequency time slot), GP (Guard Period; come downwards to up protection at interval) and UpPTS (Uplink PilotTime Slot; uplink pilot time slot); period of sub-frame is the TTI (Transmit TimeInterval, Transmission Time Interval) of HS-DSCH.In 7 conventional time slot TS0～TS6, TS0 is a time slot, is used for base station all subscriber equipmenies in the sub-district and sends broadcast and public information etc., and TS0 always distributes to down link; TS1～TS6 is a business time-slot, and TS1 always distributes to up link, and TS2～TS6 can flexible allocation give up link or down link.Wherein, the time slot of distributing to down link can be called descending time slot, and the time slot of distributing to up link can be called ascending time slot, by a transfer point separately, all disposes a pair of transfer point in each subframe between ascending time slot and the descending time slot.
In the TDD HSDPA system, each the channel timing relationship of HSDPA and scheduling of resource process are as shown in Figure 2, RNC after the downlink data that UE sends arrives NodeB through scheduling of resource, NodeB at first sends scheduling control information to UE on HS-SCCH, the downlink data that this UE is arranged on the indication HS-PDSCH subsequently, UE need continue to monitor for the HS-SCCH of its configuration to NodeB, after understanding the scheduling control information that issues on the HS-SCCH and receiving the downlink data that sends on the HS-PDSCH, UE carries out channel quality estimation according to the downlink data that receives to HS-PDSCH, determine CQI, and obtain ACK/NACK (confirm/not confirming) information according to decode results to the downlink data that receives, utilize HS-SICH to the NodeB uploading feedback information, feedback information comprises CQI and ACK/NACK information.CQI and ACK/NACK information that follow-up NodeB reports with reference to UE, select best down link modulation and coded system, and definite HARQ information is carried at down link modulation and coded system and HARQ information and is handed down to UE in the scheduling control information, repeats said process.
The inventor finds, in the existing TDD HSDPA system, the CQI that UE reports is that the channel quality of all descending time slots obtains in the balanced TTI, that is to say, when HS-PDSCH takies a plurality of descending time slot, the CQI that UE reports has characterized the equalization channel quality of all descending time slots that HS-PDSCH takies, and down link modulation and coded system that this CQI that just makes NodeB report with reference to UE selects remain unchanged in TTI.But, the channel quality of each descending time slot that HS-PDSCH takies is actually and there are differences, and, the channel quality of each descending time slot may exist than big-difference, in this case, there is following problem in the existing resource scheduling mechanism: for channel quality descending time slot preferably, in fact can receive the transmission block size greater than the CQI indication, and the suitable transmission block of unpromising this descending time slot scheduling of NodeB, thereby power system capacity and transmission rate have been reduced; For the relatively poor descending time slot of channel quality, in fact can not receive the transmission block size of CQI indication, but NodeB but carries out scheduling of resource with reference to CQI for this descending time slot, can cause the increase of the error rate, thereby increased number of retransmissions, wasted interface-free resources.And, along with the increase of the descending time slot quantity of distributing for UE, and the increasing of each descending time slot channel quality differences, this problem can further show especially.
Summary of the invention
The invention provides a kind of time division duplex high speed downlink packet and insert resource regulating method and system in the TDD HSDPA system, in order to solve the problem that the existing resource scheduling mechanism exists, elevator system capacity and transmission rate reduce the error rate, save interface-free resources.
Accordingly, the present invention also provides a kind of base station and subscriber equipment.
Time division duplex high speed downlink packet provided by the invention inserts the resource regulating method in the TDD HSDPA system, comprising:
The base station is with reference to the channel quality indication of each descending time slot of user equipment to report, select the modulation and the coded system of each descending time slot, the indication of the channel quality of described each descending time slot is that described subscriber equipment carries out channel quality estimation according to the downlink data that receives in each descending time slot and determines;
Described base station is carried at the modulation of each descending time slot and coded system and is handed down to described subscriber equipment in the scheduling control information, and described scheduling control information is indicated described subscriber equipment downlink data receiving;
Described base station sends downlink data to described subscriber equipment according to the modulation and the coded system of each descending time slot in each descending time slot.
Time division duplex high speed downlink packet provided by the invention inserts the resource scheduling system in the TDD HSDPA system, comprises base station and subscriber equipment, wherein:
Described base station, be used for channel quality indication with reference to each descending time slot of described user equipment to report, select the modulation and the coded system of each descending time slot, the modulation of each descending time slot and coded system be carried at be handed down to described subscriber equipment in the scheduling control information, and according to the modulation and the coded system of each descending time slot, send downlink data to described subscriber equipment in each descending time slot, described scheduling control information is indicated described subscriber equipment downlink data receiving;
Described subscriber equipment, be used to receive described scheduling control information, indication according to described scheduling control information receives the downlink data that described base station sends, carry out channel quality estimation according to the downlink data that receives in each descending time slot, determine and report the channel quality indication of each descending time slot.
Base station provided by the invention comprises:
First determining unit, be used for channel quality indication with reference to each descending time slot of user equipment to report, select the modulation and the coded system of each descending time slot, the indication of the channel quality of described each descending time slot is that described subscriber equipment carries out channel quality estimation according to the downlink data that receives in each descending time slot and determines;
The scheduling of resource unit is used for that the modulation of each descending time slot and coded system are carried at scheduling control information and is handed down to described subscriber equipment, and described scheduling control information is indicated described subscriber equipment downlink data receiving;
Data transmission unit is used for modulation and coded system according to each descending time slot, sends downlink data to described subscriber equipment in each descending time slot.
Subscriber equipment provided by the invention comprises:
The schedule information receiving element is used to receive the scheduling control information that the base station issues, and carries the modulation and the coded system of each descending time slot in the described scheduling control information;
The Data Receiving unit is used for receiving the downlink data that described base station sends according to the indication of described scheduling control information;
Feedback information reports the unit, is used for carrying out channel quality estimation according to the downlink data that receives in each descending time slot, determines and report the channel quality indication of each descending time slot.
Resource regulating method and system in the time division duplex high speed descending grouping access system provided by the invention, the base station is with reference to the channel quality indication of each descending time slot of user equipment to report, select the modulation and the coded system of each descending time slot, be carried at and be handed down to subscriber equipment in the scheduling control information, and according to the modulation and the coded system of each descending time slot, in each descending time slot, send downlink data to subscriber equipment, subscriber equipment also carries out channel quality estimation according to the downlink data that receives in each descending time slot, determines and report the channel quality indication of each descending time slot.Independently control principle according to time slot each descending time slot is carried out independently scheduling of resource, promoted power system capacity and transmission rate, reduced the error rate, saved interface-free resources.
Description of drawings
Fig. 1 is the subframe structure schematic diagram of TD-SCDMA in the prior art;
Fig. 2 is each channel timing relationship and the scheduling of resource process schematic diagram of HSDPA in the prior art;
Fig. 3 is the resource regulating method flow chart in the TDD HSDPA system in the embodiment of the invention;
Fig. 4 is the resource scheduling system block diagram in the TDD HSDPA system in the embodiment of the invention.
Embodiment
The embodiment of the invention is improved the imperfection part of scheduling of resource mechanism in the existing TDD HSDPA system, substantially do not influence under the prerequisite of HS-SICH and HS-SCCH covering power in assurance, improve the slot efficiency of HS-PDSCH, elevator system capacity and transmission rate, reduce the error rate, save interface-free resources.
At first, the embodiment of the invention provides a kind of improved scheduling of resource mechanism in TDD HSDPA system, its basic principle is: introduce time slot according to the characteristic of TDD mode and independently control principle, end side UE independently reports the CQI of each descending time slot, the CQI of each descending time slot that system side NodeB reports according to UE carries out independently scheduling of resource to each descending time slot.
The embodiment of the invention is mainly by adjusting aspect two: being to redefine HS-SICH frame structure and HS-SCCH frame structure in physical layer on the one hand, is the scheduling of resource that NodeB is adjusted at the MAC-hs layer on the other hand.
HS-SICH is used to carry feedback information, and the HS-SICH frame structure is as shown in table 1, comprising: RMF (recommendation modulation system) 1bit, RTBS (recommending the transmission block size) 6bit, ACK/NACK information 1bit.Wherein, RMF and RTBS have formed the CQI that UE reports.
Table 1
| Beared information | Structure |
| ACK/NACK information | 1bit：ACK＝1，NACK＝0； |
| Recommend transmission block size (RTBS) | The 6bits:TB index value; |
| Recommend modulation system (RMF) | 1bit：QPSK＝0，16QAM＝1； |
Independently control principle according to time slot, need expand feedback information, UE reports the CQI of each descending time slot respectively; On the basis of the CQI that reports each descending time slot respectively, UE needs to report respectively simultaneously the ACK/NACK information of each descending time slot.If report the CQI and the ACK/NACK information of each descending time slot, then the bit number that takies of HS-SICH frame should expand to 5 times of existing bit number in theory, promptly expand to 40bit from 8bit, it is that the ratio of descending time slot and ascending time slot is 5: 1 to the maximum because for business time-slot TS1～TS6 that the bit number that CQI and ACK/NACK information take expands to 5 times.
Because invalid index value is more in the existing TB concordance list, can compress to reduce the bit number that RTBS takies.In the TDD HSDPA system, define the TB concordance list, disposed 64 (2
6) individual TB index value, therefore need take 6 bits altogether, as shown in table 2.But as can be seen from Table 2, most of TB index value all is invalid in the TB concordance list, at different terminal types, effectively the quantity of TB index value is respectively 8,16,23,27 and 30, therefore utilizes the discontinuity of effective TB index value, can reduce the bit number that the RTBS fields account is used.
Table 2
| The TB index value terminal type | ??[1，3] | ??[4，6] | ??[7，9] | ??[10，12] | ??[13，15] |
| ??0 | |||||
| ??1 | |||||
| ??2 | |||||
| ??3 | |||||
| ??4 | |||||
| ??5 | |||||
| The TB index value terminal type | ??[1，3] | ??[4，6] | ??[7，9] | ??[10，12] | ??[13，15] |
| ??6 |
| The TB index value terminal type | ??[1，3] | ??[4，6] | ??[7，9] | ??[10，12] | ??[13，15] |
| ??7 | |||||
| ??8 | ??1 | ??1 | ??1 | ||
| ??9 | ??1 | ||||
| ??10 | |||||
| ??11 | |||||
| ??12 | ??1 | ||||
| ??13 | |||||
| ??14 | |||||
| ??15 | |||||
| ??16 | |||||
| ??17 | |||||
| ??18 | ??2 | ||||
| ??19 | ??2 | ||||
| ??20 | ??2 | ||||
| ??21 | |||||
| ??22 | ??2 | ||||
| ??23 | |||||
| ??24 | ??3 | ||||
| ??25 | ??3 | ||||
| ??26 |
| The TB index value terminal type | ??[1，3] | ??[4，6] | ??[7，9] | ??[10，12] | ??[13，15] |
| ??27 | ??3 | ||||
| ??28 | ??2 | ??4 | |||
| ??29 | |||||
| ??30 | ??3 | ??4 | |||
| ??31 | ??5 | ||||
| ??32 | ??4 | ||||
| ??33 | ??5 | ||||
| ??34 | ??6 | ||||
| ??35 | |||||
| ??36 | ??4 | ??5 | ??6 | ??7 | |
| ??37 | |||||
| ??38 | ??3 | ??7 | ??8 | ||
| ??39 | ??6 | ||||
| ??40 | ??5 | ??9 | |||
| ??41 | ??7 | ??8 | |||
| ??42 | ??9 | ??10 | |||
| ??43 | ??11 | ||||
| ??44 | ??6 | ??8 | ??10 | ||
| ??45 | ??4 | ??12 | |||
| ??46 | ??9 | ??11 | ??13 |
| The TB index value terminal type | ??[1，3] | ??[4，6] | ??[7，9] | ??[10，12] | ??[13，15] |
| ??47 | ??7 | ??12 | ??14 | ||
| ??48 | ??10 | ??13 | ??15 | ||
| ??49 | ??8 | ??11 | ??16 | ||
| ??50 | ??14 | ??17 | |||
| ??51 | ??5 | ??12 | ??15 | ??18 | |
| The TB index value terminal type | ??[1，3] | ??[4，6] | ??[7，9] | ??[10，12] | ??[13，15] |
| ??52 | ??13 | ??16 | ??20 | ||
| ??53 | ??9 | ??14 | ??17 | ??21 | |
| ??54 | ??10 | ??19 | ??23 | ||
| ??55 | ??11 | ??15 | ??20 | ??24 | |
| ??56 | ??6 | ??16 | ??21 | ??26 | |
| ??57 | ??12 | ??17 | ??22 | ??28 | |
| ??58 | ??18 | ??24 | ??30 | ||
| ??59 | ??7 | ??13 | ??19 | ??26 | ??32 |
| ??60 | ??14 | ??21 | ??27 | ??34 | |
| ??61 | ??22 | ??29 | ??36 | ||
| ??62 | ??15 | ??23 | ??31 | ??39 | |
| ??63 | ??8 | ??16 | ??24 | ??33 | ??41 |
| The quantity of effective TB index value | ??8 | ??16 | ??23 | ??27 | ??30 |
As can be seen from Table 2, at different terminal types, effectively the quantity of TB index value is respectively 8,16,23,27 and 30, and terminal type [1,3] and [4,6] support 2 time slots, terminal type [7,9] support 3 time slots, terminal type [10,12] is supported 4 time slots, terminal type [13,15] support 5 time slots, so the quantity maximum equivalent of the effective TB index value of single time slot is 8.Because the quantity maximum equivalent of the effective TB index value of single time slot is 8 (2
3), then RTBS only takies 3bit and gets final product, and that is to say that the bit number that RTBS takies in the HS-SICH frame expands to 15bit can distinguish effective TB index value of independently representing each descending time slot.Simultaneously, the bit number used of ACK/NACK information field and RMF fields account expands to 5bit.Finally, the bit number that takies of HS-SICH frame should expand to 25bit from 8bit.The HS-SICH frame structure that then redefines, as shown in table 3:
Table 3
The HS-SICH covering power is better than R4 channel (is example with CS12.2K) 10dB in the prior art, redefine after the HS-SICH frame structure, the bit number that the HS-SICH frame takies expands to 25bit from 8bit, then its covering power reduces 10lg (25/8) ≈ 5dB approximately, still be better than the about 5dB of R4 channel, because the covering power of HS-SICH still is better than the R4 channel, thereby can guarantee that the change of HS-SICH frame structure does not influence the covering power of HS-SICH.
HS-DSCH is used to carry scheduling control information, the HS-DSCH frame structure is as shown in table 4, comprise: TFRI (Transport Format Indicator, the transformat indication) information 20bits, indication HS-DSCH subsequently goes up the resource format to the UE transmitting downlink data, wherein, TFRI information specifically comprises time-slot code channel assignment information 13bit, MF (modulation system) 1bit, TBS (Transport Block Size, the transmission block size) 6bit, the time-slot code channel assignment information specifically comprises time slot position information 5bit again, channel code set identifier 8bit; HARQ information 10bits, HARQ information specifically comprises HARQ process number 3bits, RV (redundancy versions) information 3bits, new data indication 1bit, and the HS-SCCH cyclic sequence sign 3bits that is used for the HS-SCCH channel quality estimation; H-RNTI information is UE sign 16bit, is used to distinguish the UE that HS-DSCH goes up the downlink data correspondence of transmission.
Table 4
Independently control principle according to time slot, MF and TBS are essential expansions, with RTBS in the HS-SICH frame in like manner, the bit number that TBS can be taken is from 6bit boil down to 3bit; Because UE reports the ACK/NACK information of each descending time slot simultaneously respectively, then HARQ process number, RV information, new data indication and HS-SCCH cyclic sequence sign also are to expand; Time-slot code channel assignment information and UE sign then do not need to expand.The bit number that the HS-SCCH frame that then redefines takies is shown below:
13 (time-slot code channel assignment information)+16 (UE sign)+5 * [1 (MF)+3 (TBS)+10 (HARQ information)]=99 bits
In like manner, it is because for business time-slot TS1～TS6 that the bit number that coding and modulation system, HARQ information take expands to 5 times, and the ratio of descending time slot and ascending time slot is 5: 1 to the maximum.
The HS-SCCH covering power is better than R4 channel (is example with CS12.2K) 8.5dB in the prior art, redefine after the HS-SCCH frame structure, the bit number that the HS-SCCH frame takies expands to 99bit from 46bit, then covering power reduces about 10lg (99/46) ≈ 3dB, still be better than the about 5dB of R4 channel, because the covering power of HS-SCCH still is better than the R4 channel, thereby can guarantee that the change of HS-SCCH frame structure does not influence the covering power of HS-SICH.
The embodiment of the invention is independently controlled principle according to time slot, divide time slot to expand HS-SCCH frame structure and HS-SICH frame structure, realize the independent resource scheduling of each downlink business time slot, and frame structure carried out reasonable optimizing, substantially do not influence the covering power of HS-SICH and HS-SCCH, and then can not influence present HSDPA user's impression and the systems organization of HSDPA.
After independently controlling according to time slot, NodeB need be adjusted at the scheduling of resource of MAC-hs layer, channel quality with reference to each descending time slot carries out independently scheduling of resource to each descending time slot, main treatment mechanism is: the CQI of each descending time slot that NodeB reports with reference to UE, select the modulation and the coded system of each descending time slot, NodeB is carried at the modulation of each descending time slot and coded system and is handed down to UE in the scheduling control information, and, in each descending time slot, send downlink data to UE according to the modulation and the coded system of each descending time slot.Therefore, should increase the function of timeslot scheduling algorithm in the fast dispatch entity of NodeB.Simultaneously, for the multi-service user, take all factors into consideration this timeslot scheduling algorithm and existing MAC-hs resource scheduling algorithm, quality of service and real-time can be guaranteed preferably.
Comprise five physical channels in the TDD HSDPA system, HS-SCCH, HS-SICH, HS-PDSCHUL/DL A-DPCH (on/the descending channel of following).Because UL A-DPCH carrying in-band signalling, the affirmation signaling of high level and the user data traffic of network layer, DL A-DPCH only carries in-band signalling, and therefore, the scheme that the embodiment of the invention provides is to not influence of UL/DL A-DPCH.
Based on above analysis, the embodiment of the invention provides the resource regulating method in a kind of TDD HSDPA system, as shown in Figure 3, for the scheduling of resource in each TTI, can repeat following flow process, specifically comprises step:
The CQI of each descending time slot that S301, NodeB report with reference to UE selects the modulation and the coded system of each descending time slot;
The CQI (being RTBS and RMF) of each descending time slot that NodeB reports with reference to UE, and in conjunction with the operating position of Internet resources, just can select the modulation and the coded system (TBS and MF) of each descending time slot, the CQI of each descending time slot that concrete NodeB reports according to UE selects the method for the TBS and the MF of each descending time slot, selects the method for TBS and MF consistent with the CQI that NodeB in the prior art reports according to UE;
S302, NodeB are carried at the modulation of each descending time slot and coded system and are handed down to UE in the scheduling control information, wherein, and scheduling control information indication UE downlink data receiving;
S303, the control information of UE receiving scheduling are waited for the downlink data that receives the NodeB transmission according to the indication of scheduling control information;
S304, NodeB send downlink data to UE according to the modulation and the coded system of each descending time slot in each descending time slot;
S305, UE carry out channel quality estimation according to the downlink data that receives in each descending time slot, determine the CQI of each descending time slot;
S306, UE are carried at the CQI of each descending time slot and report NodeB in the feedback information;
UE is according to the downlink data that receives in each descending time slot, can measure RSCP (Receive Signal Code Power, received signal code power), ISCP (Interference on SignalCode Power, signal code power disturbs) and noise power, can determine the SINR (Signal to Interference plus Noise Ratio) of each descending time slot again according to the ratio of RSCP and ISCP and noise power sum, UE is according to the SINR of each descending time slot, the MF and the TBS of base station indication, and RU (Resouce Unit, Resource Unit) etc., can determine the RTBS and the RMF of each descending time slot, thereby report NodeB.
In the embodiment of the invention, the CQI in the feedback information is independently controlled the basis that principle expands according to time slot on, the ACK/NACK informational needs in the feedback information is expanded simultaneously, and is corresponding, need HARQ information is expanded in scheduling control information, then this method also comprises:
The ACK/NACK information of each descending time slot that a, NodeB report according to UE, determine the HARQ information of each descending time slot, wherein, to be UE determine according to the decode results to the downlink data that receives in each descending time slot the ACK/NACK information of each descending time slot, if UE is correct to the downlink data decoding that receives in each descending time slot, then report ACK information, if the downlink data decoding error of UE to receiving in each descending time slot then reports nack message;
The ACK/NACK information of each descending time slot that concrete NodeB reports according to UE is determined the method for the HARQ information of each descending time slot, determines that with the ACK/NACK information that NodeB in the prior art reports according to UE the method for HARQ information is consistent;
B, NodeB are carried at the HARQ information of each descending time slot and are handed down to UE in the scheduling control information.
Resource regulating method in the TDD HSDPA system that the embodiment of the invention provides, channel quality according to descending time slot independently carries out scheduling of resource to each descending time slot, under the prerequisite of the covering power that does not influence HS-SICH and HS-SCCH substantially, power system capacity and transmission rate have been promoted, help reducing the error rate simultaneously, thereby save interface-free resources.
Based on same technical conceive, the embodiment of the invention provides the resource scheduling system in a kind of TDD HSDPA system, as shown in Figure 4, comprises base station node B 41 and user equipment (UE) 42, wherein:
Base station node B 41, the CQI that is used for each descending time slot of reporting with reference to user equipment (UE) 42, select the modulation and the coded system of each descending time slot, the modulation of each descending time slot and coded system be carried at be handed down to user equipment (UE) 42 in the scheduling control information, and, in each descending time slot, send downlink datas to user equipment (UE) 42 according to the modulation and the coded system of each descending time slot;
User equipment (UE) 42, be used for the receiving scheduling control information, indication according to scheduling control information receives the downlink data that base station node B 41 sends in each descending time slot, carry out channel quality estimation according to the downlink data that receives in each descending time slot, determine and report the CQI of each descending time slot.
Further, base station node B 41, the ACK/NACK information that also is used for each descending time slot of reporting according to user equipment (UE) 42 is determined the HARQ information of each descending time slot respectively, the HARQ information of each descending time slot is carried at scheduling control information is handed down to user equipment (UE) 42;
User equipment (UE) 42 also is used for according to the ACK/NACK information of the decode results of the downlink data that receives in each descending time slot being determined and reported each descending time slot.
Wherein, a kind of possibility structure of base station node B 41 comprises:
First determining unit 411, the CQI that is used for each descending time slot of reporting with reference to user equipment (UE) 42, select the modulation and the coded system of each descending time slot, wherein, to be user equipment (UE) 42 carry out channel quality estimation according to the downlink data that receives in each descending time slot to the CQI of each descending time slot determines;
Scheduling of resource unit 412 is used for that the modulation of each descending time slot and coded system are carried at scheduling control information and is handed down to user equipment (UE) 42;
Base station node B 41 also can comprise second determining unit 414, wherein:
Second determining unit 414 is used for the ACK/NACK information of each descending time slot of reporting according to user equipment (UE) 42, determines the HARQ information of each descending time slot respectively;
Scheduling of resource unit 412 also is used for HARQ information with each descending time slot and is carried at scheduling control information and is handed down to user equipment (UE) 42.
Wherein, a kind of possibility structure of user equipment (UE) 42 comprises:
Schedule information receiving element 421 is used to receive the scheduling control information that the base station issues, and carries the modulation and the coded system of each descending time slot in the scheduling control information;
Feedback information reports unit 423, is used for carrying out channel quality estimation according to the downlink data that receives in each descending time slot, determines and report the CQI of each descending time slot.
Further, feedback information reports unit 423, also is used for determining and report the ACK/NACK information of each descending time slot according to the decode results to the downlink data that receives in each descending time slot.
Wherein, the CQI of each descending time slot and ACK/NACK information all are carried at and report base station node B 41 in the feedback information.
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, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. a time division duplex high speed downlink packet inserts the resource regulating method in the TDD HSDPA system, it is characterized in that, comprising:
The base station is with reference to the channel quality indication of each descending time slot of user equipment to report, select the modulation and the coded system of each descending time slot, the indication of the channel quality of described each descending time slot is that described subscriber equipment carries out channel quality estimation according to the downlink data that receives in each descending time slot and determines;
Described base station is carried at the modulation of each descending time slot and coded system and is handed down to described subscriber equipment in the scheduling control information, and described scheduling control information is indicated described subscriber equipment downlink data receiving;
Described base station sends downlink data to described subscriber equipment according to the modulation and the coded system of each descending time slot in each descending time slot.
2. the method for claim 1 is characterized in that, also comprises:
Described base station is according to the affirmation of each descending time slot of described user equipment to report/do not confirm ACK/NACK information, determine the hybrid automatic retransmission request HARQ information of each descending time slot, to be described subscriber equipment determine according to the decode results to the downlink data that receives in each descending time slot the ACK/NACK information of described each descending time slot;
Described base station is carried at the HARQ information of each descending time slot and is handed down to described subscriber equipment in the described scheduling control information.
3. the method for claim 1, it is characterized in that, the channel quality indication of described each descending time slot comprises the recommendation transmission block size of each descending time slot and recommends modulation system, wherein, the recommendation transmission block size of each descending time slot takies 3 bits, and the recommendation modulation system of each descending time slot takies 1 bit.
4. the method for claim 1, it is characterized in that, the modulation of described each descending time slot and coded system comprise the transmission block size and the modulation system of each descending time slot, wherein, the transmission block size of each descending time slot takies 3 bits, and the modulation system of each descending time slot takies 1 bit.
5. a time division duplex high speed downlink packet inserts the resource scheduling system in the TDD HSDPA system, it is characterized in that, comprises base station and subscriber equipment, wherein:
Described base station, be used for channel quality indication with reference to each descending time slot of described user equipment to report, select the modulation and the coded system of each descending time slot, the modulation of each descending time slot and coded system be carried at be handed down to described subscriber equipment in the scheduling control information, and according to the modulation and the coded system of each descending time slot, send downlink data to described subscriber equipment in each descending time slot, described scheduling control information is indicated described subscriber equipment downlink data receiving;
Described subscriber equipment, be used to receive described scheduling control information, indication according to described scheduling control information receives the downlink data that described base station sends, carry out channel quality estimation according to the downlink data that receives in each descending time slot, determine and report the channel quality indication of each descending time slot.
6. system as claimed in claim 5 is characterized in that,
Described base station, also be used for affirmation/do not confirm ACK/NACK information according to each descending time slot of described user equipment to report, determine the hybrid automatic retransmission request HARQ information of each descending time slot, the HARQ information of each descending time slot is carried at described scheduling control information is handed down to described subscriber equipment;
Described subscriber equipment also is used for according to the ACK/NACK information of the decode results of the downlink data that receives in each descending time slot being determined and reported each descending time slot.
7. a base station is characterized in that, comprising:
First determining unit, be used for channel quality indication with reference to each descending time slot of user equipment to report, select the modulation and the coded system of each descending time slot, the indication of the channel quality of described each descending time slot is that described subscriber equipment carries out channel quality estimation according to the downlink data that receives in each descending time slot and determines;
The scheduling of resource unit is used for that the modulation of each descending time slot and coded system are carried at scheduling control information and is handed down to described subscriber equipment, and described scheduling control information is indicated described subscriber equipment downlink data receiving;
Data transmission unit is used for modulation and coded system according to each descending time slot, sends downlink data to described subscriber equipment in each descending time slot.
8. base station as claimed in claim 7 is characterized in that, also comprises second determining unit, wherein:
Described second determining unit is used for affirmation/the do not confirm ACK/NACK information according to each descending time slot of described user equipment to report, determines the hybrid automatic retransmission request HARQ information of each descending time slot respectively;
Described scheduling of resource unit also is used for HARQ information with each descending time slot and is carried at described scheduling control information and is handed down to described subscriber equipment.
9. a subscriber equipment is characterized in that, comprising:
The schedule information receiving element is used to receive the scheduling control information that the base station issues, and carries the modulation and the coded system of each descending time slot in the described scheduling control information;
The Data Receiving unit is used for receiving the downlink data that described base station sends according to the indication of described scheduling control information;
Feedback information reports the unit, is used for carrying out channel quality estimation according to the downlink data that receives in each descending time slot, determines and report the channel quality indication of each descending time slot.
10. subscriber equipment as claimed in claim 9 is characterized in that,
Described feedback information reports the unit, also is used for according to the decode results to the downlink data that receives in each descending time slot, determines and report the affirmation of each descending time slot/do not confirm ACK/NACK information.
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