CN101374283B - Method for scheduling user equipment to transmit ascending data by base station and base station system - Google Patents
Method for scheduling user equipment to transmit ascending data by base station and base station system Download PDFInfo
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Abstract
The invention discloses a method for scheduling user equipment (UE) by NodeB to transmit uplink date. The mapping relationship between the number of E-UCCHs and the communication conditions is pre-constructed in the NodeB. The uplink data transmission/reception process comprises the following steps: determining the current communication condition for the UE after the NodeB receives the last data transmitted by the UE; scheduling the UE according to the determined communication condition and the scheduling information maintained by the NodeB, and acquiring the number of corresponding E-UCCHs from the mapping relationship according to the determined communication condition; notifying the UE of the scheduling allow information including the acquired number of the E-UCCHs; and transmitting the uplink data by the UE according to the scheduling allow information. The invention also discloses a NodeB system capable of executing the method. According to the method, the NodeB can effectively and dynamically determine the number of the E-UCCHs of the UE for data transmission every time, thereby achieving flexible number scheduling of the E-UCCHs, improving the resource utilization rate and reducing resource waste.
Description
Technical field
The present invention relates to the communication resources control technology in the communication system, relate in particular to the method and the corresponding base station system of a kind of base station (NodeB) scheduling user's set (UE) transmit ascending data.
Background technology
At present; In order to improve the transmitting uplink data ability; At TD-SCDMA system (TD-SCDMA); Be called low bit rate rate time division duplex (LCR TDD) again and in the R6 of 3G (Third Generation) Moblie standardization body definition and R7, introduced up enhancing (Enhanced Uplink) technology, (HSUPA) technology of high speed uplink packet access just.The key technology of HSUPA is to mix to retransmit (HARQ) and fast dispatch automatically.
Adopt in the technological LCR TDD system of HSUPA existing, the operating position of each channel is described below:
Transmission channel comprises: transmission channel of enhancing (E-DCH) and up-enhancing control channel (E-UCCH).E-DCH is used to carry uplink business data.The raw information that E-UCCH carries comprises: data block length (E-TFCI), size are 6 bits, can impliedly indicate the modulation system of the data that pass; HARQ process number (HARQ ID), size is 2 bits; And the number of transmissions (RSN), size is 2 bits, can impliedly indicate the RV parameter.Said raw information is transmitted on E-UCCH after encoding through ReedMuller (32,10).
Physical channel comprises: enhanced uplink random access channel (E-RUCCH), and the access request that is used to send subscriber equipment (UE), the sign that comprises SI message and UE is HSUPA ID number, also can be described as E-DCH Radio Network Temporary Identifier (E-RNTI); E-DCH down control channel (E-AGCH) is used to send message such as the physical resource of distributing to UE in base station (Node B) and power; E-DCH ascending HARQ answering indication signal channel (E-HICH) is used to carry the ACK/NAK message of base station feedback; E-DCH uplink physical channel (E-PUCH), said E-DCH and E-UCCH all are multiplexed into this E-PUCH channel.
Below be in the prior art, the process of base station scheduling UE transmit ascending data:
The schedule information that the base station reports according to UE (Scheduling Information) is dispatched UE; For UE distributes the E-UCCH number (ENI) of corresponding power resource (PRRI), time interval resource (TRRI), code channel resource (CRRI), UE use, the E-HICH channel number (EI) at feedback message (ACK/NACK) place, and above-mentioned information is notified on E-AGCH to UE.
UE carries out E-DCH TFS Transport Format Set (E-TFC, E-DCHTransport Format Combination) and selects according to the scheduling grant information of base station, carries out data then and sends.Because HSUPA sends data by base station scheduling UE, so sending data, UE needs some control signalings, like the HARQ process number; RSN, E-TFCI etc.; These information are prerequisites of demodulating and decoding, on E-UCCH, transmit, and are multiplexed on the E-PUCH with the business datum of E-DCH.The E-UCCH number that UE sent is the value that the ENI indication is passed through in the base station.The base station is after receiving E-PUCH; Decode after earlier a plurality of E-UCCH being merged; According to the E-TFCI that solves, HARQ Process ID and RSN business datum is carried out the soft merging of HARQ back decoding,, ACK/NACK message is fed back to UE on E-HICH according to the CRC check result.
At present in existing high spreading rate (HCR) TDD system, adopted by the fixing method of E-UCCH number of high level, be M by high level configuration E-UCCH number, it is N that UE sends the timeslot number that data occupy, the E-UCCH number of finally using as Min (M, N).
But in existing low spreading rate (LCR) TDD system, because time slot is less, spreading rate is lower, adopts fixing high level configuration E-UCCH number can take more resource, when not needing many E-UCCH so, can cause the waste of resource.
Summary of the invention
In view of this; Technical problem to be solved by this invention is to provide a kind of method of base station scheduling UE transmit ascending data; Can be so that the base station confirms dynamically that effectively UE transmits the E-UCCH number of data at every turn; Thereby realize the flexible dispatching of base station, improve the utilance of resource, reduce waste resource to the E-UCCH number.
Another technical problem to be solved by this invention is to provide a kind of base station system; Can confirm dynamically that effectively UE transmits the E-UCCH number of data at every turn; Thereby realize the flexible dispatching of base station, improve the utilance of resource, reduce waste resource to the E-UCCH number.
In order to realize the foregoing invention purpose, main technical schemes of the present invention is:
A kind of method of base station scheduling user equipment (UE) transmit ascending data is set up the mapping relations of E-UCCH number and communication condition in advance in the base station; In the transmitting-receiving process of upstream data, comprising:
Current communication condition is confirmed to UE in A, base station;
The communication condition that B, basis are confirmed and the schedule information of base station maintain are dispatched UE, from said mapping relations, obtain corresponding E-UCCH number according to the communication condition of confirming;
C, base station will comprise that the scheduling grant information of the E-UCCH number that gets access to notifies to UE;
D, UE utilize said scheduling grant information to send upstream data.
Preferably, said communication condition is the channel condition of UE, and the mapping relations of said E-UCCH number and communication condition are the one dimension mapping relations of E-UCCH number and channel condition.
Preferably, said communication condition is channel condition and the time-slot code channel number of resources of UE; The mapping relations of said E-UCCH number and communication condition are the two-dimensional map relation of E-UCCH number and number of resources and said channel condition.
Preferably, described channel condition is signal interference ratio SIR.
Preferably, the SIR in the said mapping relations is the corresponding sir value of benchmark spreading factor; When current spreading factor was non-benchmark spreading factor, the sir value in the said mapping relations was: the sir value that the benchmark spreading factor is corresponding adds the spreading gain difference of benchmark spreading factor and said non-benchmark spreading factor.
Preferably, described channel condition is user data symbol signal and noise interference SINR.
Preferably, described channel condition is SIR or SINR; In the steps A, when the measured channel condition, further comprise: the measured value of revising channel condition according to TPC adjustment step-length; Among the step B, inquire about said mapping relations as current channel condition according to said amended measured value.
Preferably, described channel condition is the user data code check.
Preferably; When multicarrier is supported but UE when only supporting that uplink data sending uses a carrier wave in the sub-district; The communication condition of the employed carrier wave of UE is confirmed in said base station; From said mapping relations, obtain the corresponding E-UCCH number of this carrier wave according to the communication condition of confirming, and utilize the corresponding E-AGCH control channel of this carrier wave will comprise that the scheduling grant information of the corresponding E-UCCH number of this carrier wave notifies to UE.
Preferably; When UE supports that multicarrier sends data and E-AGCH control channel of each carrier wave difference correspondence; Said base station is confirmed the communication condition of each carrier wave respectively; Communication condition according to each carrier wave of confirming obtains the corresponding E-UCCH number of each carrier wave from said mapping relations, and utilizes the corresponding E-AGCH control channel of said each carrier wave will comprise that the scheduling grant information of the E-UCCH number that this carrier wave is corresponding notifies to UE.
Preferably; When UE supports that multicarrier sends data and E-AGCH control channel of a plurality of carrier wave correspondence; Said base station is confirmed the communication condition of each carrier wave respectively; From said mapping relations, obtain the corresponding E-UCCH number of each carrier wave according to the communication condition of determined each carrier wave, confirm wherein maximum E-UCCH number, and utilize the corresponding E-AGCH control channel of said a plurality of carrier wave will comprise that the scheduling grant information of the E-UCCH number of said maximum notifies to UE.
A kind of base station system, said base station comprises:
Memory module, the mapping relations that are used to store E-UCCH number and communication condition;
The communication condition determination module is used for confirming the communication condition of UE;
Acquisition module is used for from the mapping relations of said memory module, obtaining the corresponding E-UCCH number of this communication condition according to determined communication condition;
Scheduler module, be used for UE being dispatched according to the schedule information of determined communication condition and base station maintain;
The scheduling grant information notification module is used for the scheduling grant information that comprises the E-UCCH number that gets access to is sent to said UE.
The said E-UCCH number of preferably, storing in the said memory module and the mapping relations of communication condition are the one dimension mapping relations of E-UCCH number and channel condition.
The said E-UCCH number of preferably, storing in the said memory module and the mapping relations of communication condition are the two-dimensional map relation of E-UCCH number and time-slot code channel number of resources and channel condition.
Preferably, described channel condition is SIR.
Preferably, the SIR in the said mapping relations is the corresponding sir value of benchmark spreading factor; When current spreading factor was non-benchmark spreading factor, the sir value in the said mapping relations was: the sir value that the benchmark spreading factor is corresponding adds the spreading gain difference of benchmark spreading factor and said non-benchmark spreading factor.
Preferably, described channel condition is SINR.
Preferably, described channel condition is the user data code check.
Because the present invention sets up the mapping relations of E-UCCH number and communication condition in advance; Said mapping relations can be the one dimension mapping relations of E-UCCH number and channel condition; It also can be the two-dimensional map relation of E-UCCH number and time-slot code channel number of resources and said channel condition; The base station according to the channel condition that measures with or the time-slot code channel number of resources confirmed of scheduling obtain mapping relations, thereby confirm the E-UCCH number of the current needs of UE, and distribute to UE and send upstream data.Therefore, the present invention can be so that the base station be dynamically confirmed the E-UCCH number of the each transmission of UE effectively, thereby realizes the flexible dispatching of base station to the E-UCCH number, improves the utilance of resource, reduces the waste to resource, improves service data transmitting efficiency.
Because the merging performance of different E-UCCH numbers is variant; Therefore among the present invention E-UCCH number and channel condition are set up mapping relations; Quality according to channel condition is confirmed the E-UCCH number, thereby has reduced the complexity of Processing Algorithm, has guaranteed the reliability of E-UCCH.
The present invention can also set up the mapping relations of E-UCCH number and time-slot code channel number of resources and channel condition; Thereby can make different getting to obtain the maximum throughput that gets under the BRU combination of resources; Improve the efficiency of transmission of data division most possibly, save signaling consumption, can further optimize the present invention; Overcome merely E-UCCH number and channel condition have been set up dispatching method E-UCCH reliability raising under some BRU combination of resources of shining upon, the situation that the data division throughput descends on the contrary.
Description of drawings
Fig. 1 is the flow chart of the method for the invention;
Fig. 2 is the simulation result sketch map of a kind of data throughout of the present invention;
Fig. 3 is the simulation result sketch map of another kind of data throughout of the present invention;
Fig. 4 is the structural representation of base station system according to the invention.
Embodiment
Through specific embodiment and accompanying drawing the present invention is explained further details below.
Fig. 1 is the flow chart of the method for the invention.Referring to Fig. 1, said flow process comprises:
In the transmission of uplink data process, may further comprise the steps 101 to step 104, can distinguish execution in step 101 to step 104 for different transmitting uplink data processes.
Data are sent according to the UE that receives in step 101, base station, confirm current communication condition to UE;
Dispatch UE according to the communication condition of confirming and the schedule information of base station maintain step 102, base station, from said mapping relations, obtains corresponding E-UCCH number according to the communication condition of confirming;
Step 103, base station will comprise that the scheduling grant information of the E-UCCH number that gets access to notifies to UE;
Step 104, UE utilize said scheduling grant information to send upstream data.In this step 104, UE can adopt existing technology to carry out, and is not emphasis of the present invention, and this paper is not giving unnecessary details.
In the present invention; When multicarrier is supported but UE when only supporting that uplink data sending uses a carrier wave in the sub-district; The communication condition of the employed carrier wave of UE is confirmed in said base station; From said mapping relations, get access to the corresponding E-UCCH number of this carrier wave according to determined communication condition; Concrete acquisition methods can be to obtain the corresponding E-UCCH number of said carrier wave through searching mapping relations, or calculates the corresponding E-UCCH number of said carrier wave through the functional relation that can reflect mapping relations; And utilize the corresponding E-AGCH control channel of this carrier wave will comprise that the scheduling grant information of the corresponding E-UCCH number of this carrier wave notifies to UE.
When UE supports that multicarrier sends data and E-AGCH control channel of each carrier wave difference correspondence; Said base station is confirmed the communication condition of each carrier wave respectively, from said mapping relations, obtains the E-UCCH number of each carrier wave correspondence according to the communication condition of determined each carrier wave; And utilize the corresponding E-AGCH control channel of said each carrier wave will comprise that the scheduling grant information of the E-UCCH number that this carrier wave is corresponding notifies to UE.
When UE supports that multicarrier sends data and E-AGCH control channel of a plurality of carrier wave correspondence; Said base station is confirmed the communication condition of each carrier wave respectively; Communication condition according to determined each carrier wave obtains the corresponding E-UCCH number of each carrier wave from said mapping relations, confirm wherein maximum E-UCCH number; And utilize the corresponding E-AGCH control channel of said a plurality of carrier wave will comprise that the scheduling grant information of the E-UCCH number of said maximum notifies to UE.
Communication condition of the present invention can comprise the situation of channel condition and time-slot code channel number of resources, for the mapping relations of E-UCCH number of the present invention and communication condition, two kinds of preferred embodiments can be arranged.
In first kind of preferred implementation; Said communication condition can be the channel condition of UE; The mapping relations of said E-UCCH number and communication condition are the one dimension mapping relations of E-UCCH number and channel condition, and the base station is through carrying out the channel condition that measuring mode confirms that UE is current to receiving data.
The advantage of the one dimension mapping relations of E-UCCH number and channel condition is adopted in explanation below.
What E-UCCH adopted is the Reed Muller coding of fixing; Result according to emulation can know; Its performance difference to some extent in different channel circumstances, and compare with the wide variation of data division code check, the performance change scope of different E-UCCH numbers is less relatively.For shortcut calculation; And the merging performance of objectively different E-UCCH numbers is variant; Therefore can E-UCCH number and channel condition be set up mapping relations among the present invention; Quality according to channel condition is confirmed the E-UCCH number, thereby has reduced the complexity of Processing Algorithm, has guaranteed the reliability of E-UCCH.
In HSUPA; Business datum at the data Block Error Rate (Bler) of first transmission on the E-DCH about 0.1; Because the reliability of E-UCCH will preferentially guarantee; So the bler of E-UCCH should be far below 0.1, general and data channel E-DCH differs one more than the magnitude, and the performance after promptly a plurality of E-UCCH merge should be less than 0.01; Therefore the present invention obtains the reliable transmission of business datum through the reliability that guarantees E-UCCH, thereby makes throughput-maximized.
Said first kind of embodiment only considers that the performance that a plurality of E-UCCH are merged is lower than a certain threshold value under a certain signal to noise ratio, is generally below 0.01, and therefore different channel conditions needs different E-UCCH numbers down.
Among the present invention, described channel condition can be used signal to noise ratio (SIR) expression, if having only a user, then SIR can be the ratio (I^or/Ioc) of all subscriber signal power of receiving terminal with noise power.In this case, the mapping relations of said E-UCCH number and channel condition are: the mapping relations of E-UCCH number and SIR.After the schedule information that UE reports is received in the base station, measure current SIR, from said mapping relations, get access to corresponding E-UCCH number according to the SIR that measures.
Because channel condition can also be set up mapping relations with user data symbol signal to noise ratio SINR or user data code check, therefore channel condition of the present invention can also be represented with SINR; The mapping relations of said E-UCCH number and channel condition are: the mapping relations of E-UCCH number and SINR.After the schedule information that UE reports is received in the base station, measure current SINR, from said mapping relations, get access to corresponding E-UCCH number according to the SINR that measures.Preferably; When E-PUCH need carry out power when controlling the RoT of control system to stablize; Need consider the influence of TPC when dispatch the E-UCCH number base station, when measuring above-mentioned SIR or SINR, further comprise: the measured value of revising SIR or SINR according to the adjustment step-length of TPC; Inquire about said mapping relations according to said amended SIR or SINR measured value as current channel condition.The said method of revising said SIR or SINR measured value according to TPC adjustment step-length can have multiple, for example when measured value is linear value, can said measured value be multiply by TPC adjustment step-length, converts the DB value afterwards again to; Perhaps when measured value has converted the DB value to, then can measured value be added TPC adjustment step-length.
Perhaps, channel condition of the present invention can also represent that the mapping relations of said E-UCCH number and channel condition are with the user data code check: the mapping relations of E-UCCH number and user data code check.After the schedule information that UE reports is received in the base station, measure current SINR, confirm the user data code check according to the SINR that measures, from said mapping relations, get access to corresponding E-UCCH number.Preferably,, need consider the influence of TPC when dispatch the E-UCCH number base station, when measuring SINR, further comprise: the measured value of revising SINR according to the adjustment step-length of TPC when E-PUCH need carry out power when controlling the RoT of control system to stablize; Confirm the user data code check according to said amended SINR measured value, from said mapping relations, get access to corresponding E-UCCH number according to time-slot code channel number of resources that obtains and user data code check.
Above-mentioned first kind of preferred implementation is to set up the mapping relations of E-UCCH number and channel condition, and this mapping relations are one dimensions, do not consider for the different resources distribution condition.In fact, total resources are certain on identical E-PUCH channel because E-DCH data and E-UCCH are multiplexing, and a plurality of E-UCCH will increase signaling consumption, and the resource of data division will diminish relatively.Because E-UCCH adopts QPSK (QPSK) modulation, symbolic number is fixed, so the resource of base station scheduling is different, the E-UCCH number is different to the ratio that influences of resource; For the situation of high spreading factor (big SF), E-UCCH only increases by one probably, will cause data division to reduce significantly, and the lifting of E-UCCH reliability at this moment possibly reduce the throughput of data on the contrary.
When the Bler=0.1 of E-DCH; The performance that a plurality of E-UCCH are merged be lower than Bler=0.01 can not make in some cases throughput-maximized; Especially influence more obviously in number of resources, promptly above-mentioned first kind of preferred implementation can not make the E-DCH throughput-optimal in some cases more after a little while.For given resource, under a certain I^or/Ioc, the throughput of link calculates according to following formula:
In the following formula, said N
SlotBe number of time slots; Said E-UCCH_Number is an E-UCCH channel number; Said Modulation is the modulating mode parameter, and said CodeRate is a data bit rate, and said CRC_bits is the CRC check bit length; Said Bler_EDCH is the Block Error Rate of E-DCH, and said Bler_EUCCH is the Block Error Rate of E-UCCH.Said TTI is the scheduled transmission time interval.Shown in following formula, only guarantee that the E-UCCH number dispatching method of E-UCCH reliability considers that merely the performance of Bler can not make the E-DCH throughput performance obtain optimum, especially all the more so for the less situation of resource.E-DCH can account for 5 time slots at most; Up solid size transmission, 16 kinds of basic resources combinations (BRU) altogether are because BRU=1; Promptly only 1 spreading factor code channel that is 16 (SF16) only can transmitting scheduling information (SI), so need other 15 kinds of throughputs that the BRU array is fashionable of assessment.
Can find out also that from the formula of above-mentioned throughput the factor that influences throughput has: BRU number (comprising time slot and code channel), modulation system, code check, E-DCH Block Error Rate, E-UCCH Block Error Rate.Because the symbol signal to noise ratio of modulation system and code check and data division has mapping relations; And E-UCCH Block Error Rate and channel condition and E-UCCH number also have relation; Maximum throughput Max (Throughput)=f (BRU, channel condition, E-UCCH number) is promptly arranged.With the throughput-optimal is constraints, can obtain E-UCCH number=g (BRU, channel condition).
In view of above-mentioned analysis, the present invention can set up the two-dimensional map relation of E-UCCH number and time-slot code channel number of resources and channel condition, and said time-slot code channel number of resources can be shown with the BRU numerical table, thereby can all make throughput maximum down so that different BRU makes up.
Therefore, in second kind of optimal way of the present invention, said communication condition is channel condition and the time-slot code channel number of resources of UE; The mapping relations of said E-UCCH number and communication condition are the two-dimensional map relation of E-UCCH number and different time-gap code channel resource number and said channel condition.
Identical with above-mentioned first kind of optimal way is, the channel condition described in second kind of preferred implementation can represent that also if having only a user, then SIR can be I^or/Ioc with SIR.In this case, the mapping relations of said E-UCCH number and channel condition are: the two-dimensional map relation of E-UCCH number and different time-gap code channel resource number and SIR.Receive the data of UE transmission when the base station after, measure current SIR,, from said mapping relations, get access to corresponding E-UCCH number according to time-slot code channel number of resources that obtains and SIR in conjunction with the definite time-slot code channel number of resources that will dispatch of schedule information.
In this second kind of preferred implementation, described channel condition can also be represented with SINR; The mapping relations of said E-UCCH number and channel condition are: the two-dimensional map relation of E-UCCH number and time-slot code channel number of resources and SINR.Receive the data of UE transmission when the base station after, measure current SINR,, from said mapping relations, get access to corresponding E-UCCH number according to time-slot code channel number that obtains and SINR in conjunction with the definite time-slot code channel number of resources that will dispatch of schedule information.
Preferably; When E-PUCH need carry out power when controlling the RoT of control system to stablize; Need consider the influence of TPC when dispatch the E-UCCH number base station, when measuring above-mentioned SIR or SINR, further comprise: the measured value of revising SIR or SINR according to the adjustment step-length of TPC; Inquire about said mapping relations according to said amended SIR or SINR measured value as current channel condition.
Perhaps, described channel condition can also represent that the mapping relations of said E-UCCH number and channel condition are with the user data code check: the mapping relations of E-UCCH number and time-slot code channel number of resources and user data code check.Receive the data of UE transmission when the base station after, measure current SINR, confirm the user data code check, from said mapping relations, get access to corresponding E-UCCH number according to time-slot code channel number of resources that obtains and user data code check according to the SINR that measures.Preferably,, need consider the influence of TPC when dispatch the E-UCCH number base station, when measuring SINR, further comprise: the measured value of revising SINR according to the adjustment step-length of TPC when E-PUCH need carry out power when controlling the RoT of control system to stablize; Confirm the user data code check according to said amended SINR measured value, from said mapping relations, get access to corresponding E-UCCH number according to time-slot code channel number of resources that obtains and user data code check.
The advantage of said second kind of preferred implementation is described through analysis of simulation experiment below.Time-slot code channel number of resources wherein is the BRU number.
Fig. 2 is single subscriber simulation sketch map as a result of a kind of data throughout of the present invention.The number of BRU is 5; And adopt 5 time slots, each time slot to adopt 16 SF code channels (5TS*SF16), can find out referring to Fig. 2, under the situation of 5 BRU; Because the influence of the difference data portion resource of E-UCCH number is very big; So the throughput that under each segmentation all is 1 E-UCCH is maximum, when therefore 5 BRU being arranged, only need an E-UCCH to get final product.
Fig. 3 is the simulation result sketch map of another kind of data throughout of the present invention.BRU number among Fig. 3 is 16, and adopts 4 time slots, each time slot to adopt 4 SF code channels (4TS*SF4).Can find out that referring to Fig. 3 when 16 BRU, because resource is more, the difference of different E-UCCH performances begins to embody to the influence of throughput, the E-UCCH number that different segmentations need down is as shown in table 1 below:
| The quantity of E-UCCH | 3 E-UCCH | 2 |
1 E-UCCH |
| The I^or/Ioc value | <-10.8+10log(16/SF) | <-9.2+10log(16/SF) | >-9.2+10log(16/SF) |
Table 1
According to appraisal procedure as above, can obtain satisfying under different B RU and the different channels condition the maximum E-UCCH number of throughput.Can also be that the QPSK code check is set up mapping relations further with SINR and user data code check.According to the requirement of throughput-optimal, according to emulation can obtain different B RU combination to different E-UCCH numbers require as shown in table 2 below:
Table 2
Performance according to emulation can know, when the QPSK code check more than 0.64, because of the signal to noise ratio of needs is had relatively high expectations, the performance of an E-UCCH has differed minimum with desirable transmission E-UCCH, at this moment only needs an E-UCCH to get final product; In addition because to different B RU combination, the influence of different E-UCCH numbers is different,, for example during 1 to 6 BRU, only need an E-UCCH to get final product for the smaller situation of BRU number.Though the Bler of E-UCCH is higher, saved resource can be transmitted the more business data, and entire throughput is higher on the contrary.Under the low signal-to-noise ratio or low code check of 8 above resources of BRU, the E-UCCH reliability just embodies through increasing the E-UCCH number the influence of throughput.
Because E-UCCH is identical with the code channel power of E-DCH; Can set up the relation of I^or/Ioc and SINR and user data code check through receiving terminal I^or/Ioc; But the user data code check is calculated by SINR; Therefore the mapping relations time error of setting up E-UCCH number and user data code check amplifies step by step, and the RSCP of user data and ISCP are the needs measurements during scheduling, so preferred embodiment of the present invention is directly with E-UCCH number and SIR (during unique user; The I^or/Ioc value is identical with SIR) set up the mapping contact, the SIR in the said mapping relations is the corresponding sir value of benchmark SF (for example benchmark SF is 16 here); When current SF was non-benchmark SF, the SIR in the said mapping relations was the spreading gain difference that the corresponding sir value of benchmark SF adds benchmark SF and said non-benchmark SF, and said side-play amount as shown in table 2 can be 10log (16/SF).
Through emulation, can set up the mapping relations of E-UCCH number and BRU number of resources and channel condition, for example table 2 is imbodies of this mapping relations; The base station is according to the mapping relations of table 2; Through measuring the channel condition SIR of E-UCCH, perhaps the symbol signal to noise ratio SINR of user data part can obtain the E-UCCH number that adaptive channel needs; Thereby can maximize the user data transmission throughput, minimize signaling consumption.
The invention also discloses a kind of base station system based on said method.Fig. 4 is the structural representation of base station system according to the invention.Referring to Fig. 4, said base station 401 and UE402 have the function of base station and UE in the prior art, and the difference with the prior art part is further to comprise in the said base station:
Memory module 411, the mapping relations that are used to store E-UCCH number and communication condition.
Communication condition determination module 412 is used to measure communication condition.
Scheduling grant information notification module 415 is used for the scheduling grant information that comprises the E-UCCH number that gets access to is sent to said UE.Said UE utilizes said scheduling grant information to send upstream data.
Also comprise other processing module 416 in certain said base station; The processing capacity that the base station had in the main completion prior art; Can be connected through modes such as buses between this processing module 416 and other module; By be not emphasis of the present invention, do not provide the annexation of processing module 416 and other module in the drawings.
For the mapping relations of E-UCCH number and communication condition, two kinds of preferred embodiments can be arranged.
In first kind of preferred implementation, said communication condition can be the channel condition of UE, and the said E-UCCH number of storage and the mapping relations of communication condition are the one dimension mapping relations of E-UCCH number and channel condition in the said memory module 411.
In second kind of optimal way of the present invention, said communication condition is channel condition and the time-slot code channel number of resources of UE; The mapping relations of the said E-UCCH number of storage and communication condition are the two-dimensional map relation of E-UCCH number and different time-gap code channel resource number and channel condition in the said memory module 411.
For described channel condition, can be SIR, SINR or user data code check.
When said channel condition was SIR, the SIR in the said mapping relations was the corresponding sir value of benchmark spreading factor; When current spreading factor was non-benchmark spreading factor, the SIR in the said mapping relations was the spreading gain difference that the corresponding sir value of benchmark spreading factor adds benchmark spreading factor and said non-benchmark spreading factor.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with this technological people in the technical scope that the present invention disclosed; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (18)
1. the method for a base station scheduling user equipment (UE) transmit ascending data is characterized in that, in the base station, sets up the mapping relations of E-UCCH number and communication condition in advance; In the transmitting-receiving process of upstream data, comprising:
Current communication condition is confirmed to UE in A, base station;
The communication condition that B, basis are confirmed and the schedule information of base station maintain are dispatched UE, from said mapping relations, obtain corresponding E-UCCH number according to the communication condition of confirming;
C, base station will comprise that the scheduling grant information of the E-UCCH number that gets access to notifies to UE;
D, UE utilize said scheduling grant information to send upstream data.
2. method according to claim 1 is characterized in that, said communication condition is the channel condition of UE, and the mapping relations of said E-UCCH number and communication condition are the one dimension mapping relations of E-UCCH number and channel condition.
3. method according to claim 1 is characterized in that, said communication condition is channel condition and the time-slot code channel number of resources of UE; The mapping relations of said E-UCCH number and communication condition are the two-dimensional map relation of E-UCCH number and said time-slot code channel number of resources and said channel condition.
4. according to claim 2 or 3 described methods, it is characterized in that described channel condition is signal interference ratio SIR.
5. method according to claim 4 is characterized in that, the SIR in the said mapping relations is the corresponding sir value of benchmark spreading factor; When current spreading factor was non-benchmark spreading factor, the sir value in the said mapping relations was: the sir value that the benchmark spreading factor is corresponding adds the spreading gain difference of benchmark spreading factor and said non-benchmark spreading factor.
6. according to claim 2 or 3 described methods, it is characterized in that described channel condition is user data symbol signal and noise interference SINR.
7. according to claim 2 or 3 described methods, it is characterized in that,
Described channel condition is SIR or SINR;
In the steps A, when the measured channel condition, further comprise: the measured value of revising channel condition according to TPC adjustment step-length; Among the step B, inquire about said mapping relations as current channel condition according to said amended measured value.
8. according to claim 2 or 3 described methods, it is characterized in that described channel condition is the user data code check.
9. method according to claim 1; It is characterized in that; When multicarrier is supported but UE when only supporting that uplink data sending uses a carrier wave in the sub-district; The communication condition of the employed carrier wave of UE is confirmed in said base station, from said mapping relations, obtains the corresponding E-UCCH number of this carrier wave according to the communication condition of confirming, and utilizes the corresponding E-AGCH control channel of this carrier wave will comprise that the scheduling grant information of the corresponding E-UCCH number of this carrier wave notifies to UE.
10. method according to claim 1; It is characterized in that; When UE supports that multicarrier sends data and E-AGCH control channel of each carrier wave difference correspondence; Said base station is confirmed the communication condition of each carrier wave respectively, from said mapping relations, obtains the corresponding E-UCCH number of each carrier wave according to the communication condition of each carrier wave of confirming, and utilizes the corresponding E-AGCH control channel of said each carrier wave will comprise that the scheduling grant information of the E-UCCH number that this carrier wave is corresponding notifies to UE.
11. method according to claim 1; It is characterized in that; When UE supports that multicarrier sends data and E-AGCH control channel of a plurality of carrier wave correspondence; Said base station is confirmed the communication condition of each carrier wave respectively; From said mapping relations, obtain the corresponding E-UCCH number of each carrier wave according to the communication condition of determined each carrier wave, confirm wherein maximum E-UCCH number, and utilize the corresponding E-AGCH control channel of said a plurality of carrier wave will comprise that the scheduling grant information of the E-UCCH number of said maximum notifies to UE.
12. a base station system is characterized in that, said base station comprises:
Memory module, the mapping relations that are used to store E-UCCH number and communication condition;
The communication condition determination module is used for confirming the communication condition of UE;
Acquisition module is used for from the mapping relations of said memory module, obtaining the corresponding E-UCCH number of this communication condition according to determined communication condition;
Scheduler module, be used for UE being dispatched according to the schedule information of determined communication condition and base station maintain;
The scheduling grant information notification module is used for the scheduling grant information that comprises the E-UCCH number that gets access to is sent to said UE.
13. base station system according to claim 12 is characterized in that, the said E-UCCH number of storing in the said memory module and the mapping relations of communication condition are the one dimension mapping relations of E-UCCH number and channel condition.
14. base station system according to claim 12 is characterized in that, the said E-UCCH number of storing in the said memory module and the mapping relations of communication condition are the two-dimensional map relation of E-UCCH number and time-slot code channel number of resources and channel condition.
15., it is characterized in that described channel condition is signal interference ratio SIR according to claim 13 or 14 described base station systems.
16. base station system according to claim 15 is characterized in that, the SIR in the said mapping relations is the corresponding sir value of benchmark spreading factor; When current spreading factor was non-benchmark spreading factor, the sir value in the said mapping relations was: the sir value that the benchmark spreading factor is corresponding adds the spreading gain difference of benchmark spreading factor and said non-benchmark spreading factor.
17., it is characterized in that described channel condition is signal and noise interference SINR according to claim 13 or 14 described base station systems.
18., it is characterized in that described channel condition is the user data code check according to claim 13 or 14 described base station systems.
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| CN101959234B (en) * | 2009-07-21 | 2013-07-17 | 鼎桥通信技术有限公司 | Method for realizing multi-carrier HSUPA |
| CN102013937B (en) * | 2009-09-07 | 2013-01-02 | 普天信息技术研究院有限公司 | Channel quality estimation method and transmission method of E-UCCH (Enhanced-Uplink Control Channel) |
| CN102378342B (en) * | 2010-08-11 | 2016-05-25 | 电信科学技术研究院 | A kind of adjustment of transmitted power and indicating means thereof, Apparatus and system |
| CN103200687B (en) * | 2012-01-09 | 2016-09-14 | 华为技术有限公司 | A kind of control channel resource mapping method, base station and subscriber equipment |
| CN102769521B (en) * | 2012-07-24 | 2015-06-17 | 大唐移动通信设备有限公司 | E-PUCH (evolved physical uplink channel) data transmission method and device |
| CN103023617A (en) * | 2013-01-08 | 2013-04-03 | 李文龙 | Method for reporting CQIs (channel quality indicators) |
| US10736133B2 (en) | 2015-08-14 | 2020-08-04 | Lenovo Innovations Limited (Hong Kong) | Burst-based transmission scheduling in a wireless communication system |
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| EP1724948A1 (en) * | 2004-03-30 | 2006-11-22 | Matsushita Electric Industrial Co., Ltd. | Base station apparatus, mobile station apparatus, and data channel scheduling method |
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| EP1724948A1 (en) * | 2004-03-30 | 2006-11-22 | Matsushita Electric Industrial Co., Ltd. | Base station apparatus, mobile station apparatus, and data channel scheduling method |
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