CN100387066C - Method for scheduling up service resource - Google Patents
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- CN100387066C CN100387066C CNB031092535A CN03109253A CN100387066C CN 100387066 C CN100387066 C CN 100387066C CN B031092535 A CNB031092535 A CN B031092535A CN 03109253 A CN03109253 A CN 03109253A CN 100387066 C CN100387066 C CN 100387066C
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Abstract
The present invention discloses a method for scheduling up service resources and a time division duplex system applied to high-speed data transmission. The method comprises the steps that after wireless load is established between user terminals and a base station, every user terminal reports respective current up speed rate information to the base station through the physical layer signalling; after the base station receives the up speed rate information reported by every user terminal, the up service resources are allocated to the user terminals reporting information according to the received up speed rate information reported by all the user terminals and the situation of current system resources; then, the corresponding user terminals are respectively informed of allocated up service resource information through the physical layer signalling; every user terminal obtains the usable up service resources from the up service resource information sent from the base station, and the up service information is sent according to the obtained usable up service resources. The method has the advantages of high spectrum utilization efficiency and quick resource allocation, the resources can be reasonably scheduled in time, and the throughput of the system is ensured.
Description
Technical field
The present invention relates to the resource allocation techniques in the communication system, be meant the method for uplink service scheduling of resource in time division duplex (TDD) system in high speed data transfer especially.
Background technology
TD SDMA (TD-SCDMA) system is based on tdd mode, i.e. uplink and downlink are in a frequency range together, do not need paired frequency, so availability of frequency spectrum height, and the correlation of up-downgoing resource is big.
The physical channel of TD-SCDMA comprises four-layer structure: the ground floor System Frame Number second layer is a radio frames, and the 3rd layer is subframe, and the 4th layer is time slot/sign indicating number.Specifically, physical channel is made up of several radio frames, and a radio frames is 10ms, and each radio frames is divided into the subframe of continuous two 5ms again.As shown in Figure 1, each subframe comprises seven business time-slots and three special time slots again, and three special time slots of oblique line filling part are respectively descending pilot frequency time slot (DwPTS), uplink pilot time slot (UpPTS), and protection time slot (GP).According to different Resource Allocation Formulas, the configuration structure of subframe or time slot/sign indicating number may be different.In each subframe, the distribution of ascending time slot and descending time slot is dynamic, decides according to the difference of up-downgoing business.Such as: for voice service, just need the resource allocation of up-downgoing symmetry.In the TD-SCDMA system, be to distinguish different subscriber signals jointly with the sign indicating number territory by time domain.
Physical channel under the tdd mode is a burst, and a burst was made up of data division, pilot tone (midamble) part and protection period, and the duration of each burst is a time slot.The assigned timeslot of user terminal in radio frames launched corresponding physical channel data, and radio frames can continuous dispensing, and promptly all time slots can be distributed to physical channel in each frame, also can be discontinuous distribution, promptly only have the time slot allocation in the part radio frames to give physical channel.A transmitter can be launched several bursts simultaneously, and the data division of several bursts must use the different orthogonal channel code.
When user terminal has the speech requirement, need at first to file a request to the base station, the base station is specified operable code channel and time slot according to the operating position of present resource to the user then.Here, a plurality of user terminals may transmit the data of oneself in same time slot, but will use different spreading factors.
Referring to shown in Figure 2, in communication process,, will initiate following physical channel reconfiguration course in case need to change the configuration of the physical channel resources that user terminal using:
The Radio Resource control (RRC) of step 201, network side produces physical channel and reshuffles (PHYSICAL CHANNEL RECONFIGURATION) message, and this message is sent to the RRC of respective user terminal;
Step 202, after user terminal is received this message, can reconfigure according to the physical channel of the content of carrying in the message to appointment;
Step 203, after user terminal is finished configuration effort, user terminal can be reshuffled to the RRC of network side feedback physical channel and be finished (PHYSICAL CHANNEL RECONFIGURATIONCOMPLETE) message.
From above process as can be seen, the distribution of the physical layer uplink and downlink time slot of TD-SCDMA is dynamic; Shared relationship between the user terminal and the communication resource is the branch of raising the price the time-division, and multiple users is the relation that sign indicating number divides at a time in the crack; The configuration of Traffic Channel physical resource with reshuffle must be by high-level signaling mutual.
Mobile radio system develops into present 3-G (Generation Three mobile communication system) from the analog communication system of frequency division multiple access (FDMA), and the business of support develops into the mixed business of present data and speech from simple voice service, until data service at a high speed.People are more and more higher to the requirement of communication system, have been not content with the computer access network by family, but wish to realize can both receiving in any place such as send Email, carry out data services such as network browsing.Therefore, the development of communication system also gradually by the system of simple service speech to the system development of supporting high-speed data.
As everyone knows, speech business has tangible different with the service quality that data service requires.For speech business, require than higher real-time, to guarantee that the caller can exchange smoothly; This business is relatively average in time, and the user is conversation always before on-hook, and the speed of speech business is relatively low, and also more fixing, up-downgoing speed is symmetrical.And when smudgy once in a while, the user can tolerate, so also not too high to the requirement of the error rate in the communication process.
For data service, the user can wait for the response of network a little doing such as surfing the web, download, sending out in these activities of mail, but can not accept higher bit error rate; The initiation of data service is paroxysmal, and behind each professional end of transmission, the user has the reading time of a random length; Whether but carry out in the process in business, the user wishes to obtain high as far as possible message transmission rate, reduces data transmission period, but constant in very big requirement to speed; And according to the statistical nature of data service, downlink business is greater than the uplink service several times.
In sum, existing TD-SCDMA system only is applicable to speech business, so if utilize existing TD-SCDMA system that the data business is served, then can not guarantee the lower error rate; And because the appearance and the protensive features of data service, data service needs often according to changes in flow rate dynamic assignment physical resource; If use high-level signaling that physical layer resources is reshuffled, can be relatively slow owing to the high-level signaling transmission, thus cause the idle of physical resource long period, and strengthen the network signal burden, reduce the valid data throughput; If for its up-downgoing distributes symmetrical resource, must make downlink data transmission become system bottleneck, can not bring into play the efficient of wireless frequency spectrum to greatest extent.
Therefore, a kind of system of high speed data transfer has been proposed in another patent application, be implemented in and carry out high-speed data transmission in the TDD system, in this patent, provided a kind of physical layer frame structure, utilize upload control slot transmission ascending control information, utilize up link control (ULC) part in the descending control time slot can transmit the ascending resource assignment signalling.But there is not specifically to set forth the reconfiguration course of ascending resource in this system.
Summary of the invention
In view of this, purpose of the present invention just provides a kind of dispatching method that is suitable for the uplink service resource of above-mentioned high speed data transmission system, make its can be in time, reasonably the ascending resource of this system is dispatched.
A kind of method of uplink service scheduling of resource is applied in the tdd systems of high speed data transfer, and this method is to realize like this.
A. after radio bearer was set up in the base station of user terminal and network side, each user terminal reported current separately upstream rate information by physical layer signaling to affiliated base station;
B. after the upstream rate information of each user terminal to send up is received in the base station,, be the user terminal distribution uplink service resource of reporting information according to the upstream rate information and the current system resource condition of all user terminal to send up that receive; Then, by physical layer signaling the uplink service resource information of distributing is notified to corresponding user terminal respectively again;
C. each user terminal obtains self spendable uplink service resource from the uplink service resource information that the base station sent, and sends uplink service information according to the spendable uplink service resource of being obtained.
Described upstream rate information be according to the user terminal present rate require to raise, the changing down grade, or keep present rate, or the uplink indication that finishes reports.
The maximum rate indication that described upstream rate information is supported for this user terminal is current.
Described system resource condition is the ascending load of each user terminal present rate, each user terminal uplink service scheduling fairness, user terminal use code word and this base station.
Described uplink service resource is a code word, or time slot, or both combinations.
This method further comprises: when user terminal was indicated to the base station reporting uplink end of transmission, user terminal finished uplink service, stops to monitor the distribution of network side to uplink service.
This method further comprises: user terminal reports to the base station when requiring rising, reduce or keeping present rate, the uplink service resource allocation signal that this user terminal real-time listening base station side issues.
Certain customers' terminal of reporting information is given in the resource allocation of uplink service described in the step B.
Physical layer signaling described in the steps A sends by the assigned timeslot in the physical layer subframe of supporting the ascending control information transmission.
Physical layer signaling described in the step B sends by the assigned timeslot in the physical layer subframe of supporting the Downlink Control Information transmission.
The present invention directly finishes reshuffling each user terminal ascending resource by physical layer.When this method can make user terminal carry out transmitting uplink data in wireless communication system, can change uplink service speed, and the spectrum utilization efficiency height, Resources allocation speed is fast; This method can in time, reasonably be dispatched the ascending resource that each user terminal uses, and guarantees that the uplink business data transmission rate can be enough big, thereby further guarantees the throughput of whole system.
Description of drawings
Fig. 1 is a TD-SCDMA system physical layer subframe structure schematic diagram;
The schematic diagram that Fig. 2 reshuffles for physical channel in the prior art;
Fig. 3 realizes the schematic flow sheet that ascending resource distributes for the present invention;
Fig. 4 is the transmitting uplink data sequential chart of the specific embodiment of the invention;
Fig. 5 is a high speed data transmission system subframe structure schematic diagram.
Embodiment
Core content of the present invention is: in the TDD of high speed data transfer system, after user terminal had been set up radio bearer with the base station, system directly reconfigured the operable uplink service resource of each user terminal by physical layer.And described physical layer signaling is that the defined physical layer subframe of ascending control information and Downlink Control Information transmission of supporting sends in the high speed data transmission system that proposes by another patent application.
Referring to shown in Figure 3, realize that method of the present invention may further comprise the steps:
After the upstream rate information of each user terminal to send up is received in step 302, base station, according to the upstream rate information of all user terminal to send up that receive and current system resource constraints etc., be that all or part of user terminal of reporting information distributes the uplink service resource; The base station sends to the respective user terminal with the heavy assignment information of each user terminal by the heavy assignment signalling of physical layer then; Here constraints comprises that each user terminal present rate, each user terminal uplink service scheduling fairness, user terminal use code word etc.
Further, the process of concrete Resources allocation is like this: after the base station received the upstream rate information and present rate of all user terminal to send up, at first the requirement according to the user distributed the upstream rate resource; When estimating that then each user terminal sends upstream data with corresponding speed, the tolerance limit that whether the total interference level in base station is surpassed the base station, if surpass tolerance limit, in order to guarantee fairness, reduce the upstream rate of the higher user terminal of recent upstream rate, and the reduction process can repeat, up to satisfying base station tolerance limit requirement, determine the upstream rate of each user terminal; According to the fixed upstream rate of each user terminal, distribute corresponding up code word at last, finish the distribution of ascending resource.
Lift specific embodiment below and further specify technical scheme of the present invention.
For technical scheme of the present invention more clearly is described, here each user terminal is initiated first resource statement of requirements so obtain resource re-allocation information, the procedure definition that sends uplink business data according to the resource that obtains then is a transmitting uplink data stage, this stage is divided into three continuous different little stages again: that initiates the resource requirement report is the upstream rate report stage; The base station is the ascending resource allocated phase according to the statement of requirements of user terminal for its process of redistributing ascending resource; The process that the resource that user terminal heavily distributes according to the base station is carried out transmitting uplink data is the uplink traffic transmission stage.Here, lower error rate requirement when guaranteeing that the base station receives this signaling, present embodiment is defined in the upstream rate report stage, and the signaling that reports of physical layer will repeat to send in continuous a plurality of subframes, can adopt five continuous subframes to repeat to send usually; At the ascending resource allocated phase, the heavy assignment signalling that physical layer issues will repeat to send in continuous a plurality of subframes, and is same, can adopt five continuous subframes to repeat to send.
Referring to shown in Figure 4, the process of a transmitting uplink data is as follows:
A. in the upstream rate report stage, all user terminals are brought into use its specific orthogonal code and scrambler from n subframe, send physical layer upstream rate indication signaling to the base station, indicate current rate information, and n mod 5=0, and repeat to send in five continuous subframes.Here, user terminal is at five continuous upload control time slots, of the requirement of this user terminal to transmitting uplink data, use the upstream rate indication signaling reporting ent side of physical layer, this denoting signaling user terminal wishes to improve speed, changing down, maintenance present rate, or uplink finishes.And in the report stage, it is identical that the transmitting uplink data of transmitting in each subframe requires in same upstream rate.
B. after the base station receives the upstream rate indication signaling of continuous five time slots transmission of all user terminals, rate information, each user terminal present rate, each user terminal uplink service scheduling fairness according to each user terminal to send up, user terminal uses code word, and this base station ascending load etc., all or part of in these user terminals of reporting information, distribute the uplink service resource, then, in five continuous subframes, assignment information is sent to the relative users terminal by physical layer descending control signaling at the ascending resource allocated phase.
C. each user terminal monitors each self-corresponding ascending resource assignment signalling, whether is assigned with operable uplink orthogonal sign indicating number resource according to the ascending resource assignment signalling judgement that receives.
If this user terminal is assigned with corresponding uplink orthogonal sign indicating number resource, then this user terminal in five subframes of n+14 subframe, uses the uplink orthogonal sign indicating number that is assigned with that upstream data is carried out quadrature modulation in the n+10 subframe, sends uplink business data;
If this user terminal is not assigned with uplink orthogonal sign indicating number resource, then this user terminal in five subframes of n+14 subframe, stops to send uplink service, up to being assigned with corresponding ascending resource in the n+10 subframe.
In said process, user terminal all sends the upstream rate indication signaling of physical layer in the corresponding stage, and monitors the assignment signalling of base station to ascending resource, thus the resource distribution when adjusting next transmitting uplink data.And when uplink service finished, user terminal sends upstream rate indication signaling indication uplink service to be finished, and stops to send this physical layer signaling, stops to monitor the ascending resource assignment signalling, up to uplink service initiation next time.
Shown in the subframe structure of Fig. 5, seven time slots in the physical layer subframe are defined as in above-mentioned present embodiment: TS1 is the upload control time slot, is used for the reporting uplink rate information; TS2, TS3 are the uplink traffic transmission time slot; TS5, TS6 distribute time slot as ascending resource.From above-mentioned definition as can be seen, three kinds of business in upstream rate report stage, ascending resource allocated phase and uplink traffic transmission stage are all carried out at the same time, this is because the resource that use user terminal and base station is not conflicted, only this ascending resource allocated phase business of being carried out is to carry out resource allocation according to the upstream rate request that the last upstream rate report stage sends, and the uplink traffic transmission stage is that user terminal carries out uplink traffic transmission according to the assignment information that last time, the ascending resource allocated phase obtained.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (10)
1. the method for a uplink service scheduling of resource is applied to it is characterized in that this method comprises the steps: in time division duplex (TDD) system of high speed data transfer
A. after radio bearer was set up in the base station of user terminal and network side, each user terminal reported current separately upstream rate information by physical layer signaling to affiliated base station;
B. after the upstream rate information of each user terminal to send up is received in the base station,, be the user terminal distribution uplink service resource of reporting information according to the upstream rate information and the current system resource condition of all user terminal to send up that receive; Then, by physical layer signaling the uplink service resource information of distributing is notified to corresponding user terminal respectively again;
C. each user terminal obtains self spendable uplink service resource from the uplink service resource information that the base station sent, and sends uplink service information according to the spendable uplink service resource of being obtained.
2. method according to claim 1 is characterized in that, described upstream rate information be according to the user terminal present rate require to raise, the changing down grade, or keep present rate, or the uplink indication that finishes reports.
3. method according to claim 1 is characterized in that, the maximum rate indication that described upstream rate information is supported for this user terminal is current.
4. method according to claim 1 is characterized in that, described system resource condition is the ascending load of each user terminal present rate, each user terminal uplink service scheduling fairness, user terminal use code word and this base station.
5. method according to claim 1 is characterized in that, described uplink service resource is a code word, or time slot, or both combinations.
6. method according to claim 2 is characterized in that, this method further comprises: when user terminal was indicated to the base station reporting uplink end of transmission, user terminal finished uplink service, stops to monitor the distribution of network side to uplink service.
7. method according to claim 2 is characterized in that, this method further comprises: user terminal reports to the base station when requiring rising, reduce or keeping present rate, the uplink service resource allocation signal that this user terminal real-time listening base station side issues.
8. method according to claim 1 is characterized in that, certain customers' terminal of reporting information is given in the resource allocation of uplink service described in the step B.
9. method according to claim 1 is characterized in that, physical layer signaling described in the steps A sends by the assigned timeslot in the physical layer subframe of supporting the ascending control information transmission.
10. method according to claim 1 is characterized in that, physical layer signaling described in the step B sends by the assigned timeslot in the physical layer subframe of supporting the Downlink Control Information transmission.
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| CNB031092535A CN100387066C (en) | 2003-04-07 | 2003-04-07 | Method for scheduling up service resource |
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| CNB031092535A CN100387066C (en) | 2003-04-07 | 2003-04-07 | Method for scheduling up service resource |
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| CN100387066C true CN100387066C (en) | 2008-05-07 |
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Families Citing this family (20)
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| GB2427097B (en) * | 2005-05-03 | 2007-03-21 | Ipwireless Inc | Method and apparatus for transmitting uplink signalling information |
| US20060280145A1 (en) * | 2005-06-10 | 2006-12-14 | Revel Agnes M | Event trigger for scheduling information in wireless communication networks |
| CN101079666B (en) * | 2006-05-26 | 2011-04-20 | 大唐移动通信设备有限公司 | A method for allocating wireless resources in the communication system |
| CN101232705B (en) * | 2007-01-23 | 2010-10-13 | 上海无线通信研究中心 | Scheduling method of multi service multiplexing supporting medium access control lay |
| US8000272B2 (en) * | 2007-08-14 | 2011-08-16 | Nokia Corporation | Uplink scheduling grant for time division duplex with asymmetric uplink and downlink configuration |
| CN101400081B (en) * | 2007-09-28 | 2010-06-02 | 大唐移动通信设备有限公司 | Uplink scheduling method, system and device in TDD system |
| JP5022859B2 (en) * | 2007-10-22 | 2012-09-12 | 株式会社エヌ・ティ・ティ・ドコモ | Transmission rate control method, mobile communication system, and radio base station |
| CN101499887B (en) * | 2008-01-28 | 2012-04-04 | 电信科学技术研究院 | Semi-static resource scheduling method and system, retransmission selection scheduling method and system |
| JP5135119B2 (en) * | 2008-08-19 | 2013-01-30 | 株式会社エヌ・ティ・ティ・ドコモ | Base station, host station and radio communication system |
| CN101677460B (en) * | 2008-09-18 | 2012-07-04 | 中兴通讯股份有限公司 | Configuration method, terminal and base station of radio resource scheduling |
| CN101686552B (en) * | 2008-09-22 | 2012-04-25 | 电信科学技术研究院 | Physical resource block dispatching method and device |
| CN101730236B (en) * | 2008-10-30 | 2015-05-20 | 中兴通讯股份有限公司 | Resource scheduling method and system, base station and terminal therefor |
| CN101902818B (en) * | 2009-06-01 | 2014-07-16 | 中兴通讯股份有限公司 | Wireless resource scheduling method and system |
| CN103828424A (en) * | 2012-09-03 | 2014-05-28 | 华为技术有限公司 | Resource scheduling method, device and system |
| CN105323044B (en) * | 2014-07-15 | 2018-09-25 | 中国移动通信集团公司 | A kind of data dispatching method, device and with interior relaying |
| CN107181577B (en) * | 2016-03-09 | 2022-03-01 | 中兴通讯股份有限公司 | Method and device for transmitting uplink feedback information |
| US20200137752A1 (en) * | 2017-03-24 | 2020-04-30 | Telefonaktiebolaget Lm Ericsson (Publ) | Technique for Controlling the Timing of Uplink Control Information in a Radio Communication Between a Network Node and a Radio Device |
| CN109392103B (en) | 2017-08-04 | 2020-08-28 | 大唐移动通信设备有限公司 | Resource allocation method and device |
| CN111130668B (en) * | 2018-10-30 | 2022-06-07 | 中国电信股份有限公司 | Method, device and base station for processing uplink service |
| CN112087250B (en) * | 2019-06-13 | 2021-10-29 | 大唐移动通信设备有限公司 | Method and device for determining terminal sending parameters |
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