CN101409582B - Method and apparatus for reducing ascending scheduling control signaling overhead - Google Patents

Method and apparatus for reducing ascending scheduling control signaling overhead Download PDF

Info

Publication number
CN101409582B
CN101409582B CN2007101756425A CN200710175642A CN101409582B CN 101409582 B CN101409582 B CN 101409582B CN 2007101756425 A CN2007101756425 A CN 2007101756425A CN 200710175642 A CN200710175642 A CN 200710175642A CN 101409582 B CN101409582 B CN 101409582B
Authority
CN
China
Prior art keywords
tti
descending
ascending
uplink
mode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN2007101756425A
Other languages
Chinese (zh)
Other versions
CN101409582A (en
Inventor
索士强
肖国军
唐海
王可
孙韶辉
王映民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
Original Assignee
China Academy of Telecommunications Technology CATT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Academy of Telecommunications Technology CATT filed Critical China Academy of Telecommunications Technology CATT
Priority to CN2007101756425A priority Critical patent/CN101409582B/en
Publication of CN101409582A publication Critical patent/CN101409582A/en
Application granted granted Critical
Publication of CN101409582B publication Critical patent/CN101409582B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The invention discloses a method for reducing the overhead of uplink dispatcher control signaling, comprising: a base station NodeB is provided with N uplink TTIs in a radio frame by merging uplink subframes, and each of the N uplink TTIs is provided with a downlink TTI which is only corresponding to the uplink TTI, wherein, the N is less than or equal to the number of the downlink TTIs that is preset by the system; the uplink dispatcher control signaling of each uplink TTI is carried in the downlink TTI which is only corresponding to the uplink TTI to be sent; the setmode of the uplink TTIs and the corresponding relation between the uplink TTIs and the downlink TTI are obtained by user terminal UE; the uplink dispatcher control signaling of each uplink TTI is extracted in the received downlink TTIs, so that the uplink scheduling of resources is carried out. The invention also discloses a base station and the user terminal. By adopting the invention, the control channel utilization of the TDD system is improved.

Description

A kind of method and device that reduces ascending scheduling control signaling overhead
Technical field
The present invention relates to the time division duplex technology, particularly a kind of method and device that reduces ascending scheduling control signaling overhead.
Background technology
3-G (Generation Three mobile communication system) (3G) adopts the CDMA multi-access mode, supports multimedia service, has higher competitiveness.In order to ensure in the longer time, keeping this competitiveness, 3GPP has started Long Term Evolution (Long Term Evolution, the LTE) research project of 3G wireless interface technology.
At present, the LTE system confirms to support 2 kinds of frame structures.First kind frame structure is as shown in Figure 1, supports FDD (FDD) and two kinds of duplex modes of time division duplex (TDD).Wherein, the frame length of a radio frames is 10ms, comprises 20 time slots altogether, and time slot mark from 0 to 19, every slot length are 0.5ms, and two continuous time slot are defined as a sub-frame, and subframe i is made up of time slot 2i and 2i+1, I=0 wherein, and 1 ..., 9.
Second type of frame structure is as shown in Figure 2, only supports the TDD duplex mode.Wherein, the frame length of a radio frames is 10ms, comprises the field of two 5ms.Each field is made up of 7 business time-slots (being labeled as 0~6) and 3 special time slots (descending pilot frequency time slot, protection is time slot and uplink pilot time slot at interval).Every subframe definition is a business time-slot.Wherein, subframe 0 always is used for downlink transfer with descending pilot frequency time slot, and uplink pilot time slot and subframe 1 always are used for uplink.
In the LTE system, Transmission Time Interval (TTI) is meant the once transmission time from start to end; Usually TTI is the duration of a sub-frame; Scheduling of resource is that unit carries out with TTI, just is that unit carries out with the subframe, and the scheduling of resource of up-downgoing is accomplished by base station (NodeB); Therefore, the ascending scheduling control signaling that is used for carrying out ascending resource scheduling transmits at the descending control signaling that NodeB sends to user terminal (UE).
Particularly, under current LTE system, utilize the individual modulation symbol transmitting downlink control signal of preceding m (m≤3) of each descending sub frame.Wherein, can comprise the uplink scheduling signaling that is directed against certain sub-frame of uplink in this descending control signaling.Specifically under the LTE system, the modulation system of physical layer is OFDM (OFDM), so the modulation symbol in the descending sub frame is the OFDM symbol, just transmitting downlink control signal in preceding m OFDM symbol of descending sub frame.
For LTE FDD system, because up-downgoing separates on frequency domain, ascending-descending subframes has implied relation one to one, so the ascending scheduling control signaling that transmits in each descending sub frame has impliedly been confirmed corresponding sub-frame of uplink.
But for LTE TDD system, because it supports non-symmetrical service, often the setting of ascending-descending subframes number is unequal, possibly not have relation one to one.When the sub-frame of uplink number is counted greater than descending sub frame, must there be at least one descending sub frame need transmit the uplink scheduling signaling of an above sub-frame of uplink.So, for the descending sub frame of the uplink scheduling signaling of transmitting an above sub-frame of uplink, the sub-frame of uplink that in once transmitting arbitrarily, just need utilize extra indication bit to indicate the uplink scheduling signaling of this time transmission to be directed against.
Especially, through the up-downgoing switching point is set, proportion of ascending subframe and descending subframe can be set arbitrarily.And according to the difference of ascending-descending subframes ratio, the indication bit number that needs in the descending sub frame also maybe be different.Specifically there is dual mode that bit number is set, the ascending-descending subframes ratio that adaptation possibly change.
A kind of mode is: to every kind of proportion of ascending subframe and descending subframe, adopt the least number of bits indication.This mode efficient is higher, but will cause the various control channel format.
Another kind of mode is: select in all ascending-descending subframes ratios, the situation that required bit number is maximum is provided with indication bit, and this mode only need increase a kind of control channel form, but has reduced channel utilization.
In a word, in LTE TDD system, when the sub-frame of uplink number is counted greater than descending sub frame, need the additional control channels expense to indicate the pairing sub-frame of uplink of ascending scheduling control signaling at present.
Summary of the invention
In view of this, the present invention provides a kind of method and apparatus that reduces ascending scheduling control signaling overhead, can improve the channel utilization of control channel.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of method that reduces ascending scheduling control signaling overhead comprises:
In a radio frames, base station NodeB is provided with N up TTI through merging sub-frame of uplink, and said N is smaller or equal to the number of the descending TTI of systemic presupposition;
The descending TTI of unique correspondence is set for each the up TTI that is provided with;
To be carried at the ascending scheduling control signaling of each up TTI among the descending TTI of the unique correspondence of this up TTI and send.
Preferably, said merging sub-frame of uplink is: confirm the sub-frame of uplink number that each TTI comprises according to business need.
Preferably, high more to the delay requirement of up TTI, the number of sub frames that this up TTI comprises is few more; Delay requirement to up TTI is low more, and the number of sub frames that this up TTI comprises is many more;
System is high more to the coverage requirement of up TTI, and the number of sub frames that this up TTI comprises is many more; System is low more to the coverage requirement of up TTI, and the number of sub frames that this up TTI comprises is few more.
Preferably, base station NodeB is carried out said through merging the operation that sub-frame of uplink is provided with N up TTI according to ascending-descending subframes ratio current in the system.
Preferably, this method further comprises: in NodeB, to various ascending-descending subframes ratios, preestablish the set-up mode of up TTI;
Said NodeB is provided with N up TTI: select predefined up TTI set-up mode according to current ascending-descending subframes ratio, N up TTI is set.
Preferably, this method further comprises: in NodeB, preserve fixing up TTI set-up mode in advance;
Said NodeB is provided with N up TTI: according to said fixing up TTI set-up mode, N up TTI is set.
Preferably, said NodeB for the descending TTI that each up TTI is provided with unique correspondence is: according to up TTI that in NodeB, is provided with in advance and the corresponding relation of descending TTI, the descending TTI of unique correspondence is set for each up TTI.
A kind of method that reduces ascending scheduling control signaling overhead comprises:
User terminal UE obtains the set-up mode of N up TTI and the corresponding relation of up TTI and descending TTI; Said N up TTI is that NodeB is provided with through the merging sub-frame of uplink in a radio frames, and said N is smaller or equal to the number of the descending TTI of systemic presupposition;
According to the set-up mode of the up TTI that obtains and the corresponding relation of up TTI and descending TTI, in the downlink frame that receives, extract ascending scheduling control signaling to each up TTI, carry out ascending resource scheduling.
Preferably, said UE obtains the set-up mode of up TTI and is:
In UE,, preestablish the set-up mode of up TTI, and, confirm corresponding said set-up mode according to the indicated current ascending-descending subframes ratio of NodeB to various ascending-descending subframes ratios;
Perhaps, in UE, preserve fixing up TTI set-up mode in advance;
Perhaps, receive the up TTI set-up mode that NodeB issues through broadcasting or high-level signaling.
Preferably, the mode that said UE obtains up TTI and descending TTI corresponding relation is: pre-configured in UE, perhaps, receive the said corresponding relation that NodeB issues through broadcasting or high-level signaling.
A kind of base station NodeB comprises:
Up TTI is provided with the unit; Be used to be provided with N up TTI; For each up TTI is provided with the descending TTI of unique correspondence, said N is smaller or equal to the number of the descending TTI of systemic presupposition, and the corresponding relation of up TTI and descending TTI is offered the ascending scheduling control signaling transmitting element;
The ascending scheduling control signaling transmitting element is used for according to up TTI up TTI that the unit provides and the corresponding relation of descending TTI being set, and will be carried at the ascending scheduling control signaling of each up TTI among the descending TTI of the unique correspondence of this up TTI to send.
A kind of user terminal UE comprises:
Up TTI acquiring unit; Be used to obtain and preserve the set-up mode of N up TTI and the corresponding relation of up TTI and descending TTI; And offer the ascending resource scheduling unit; Said N up TTI is that NodeB is provided with through the merging sub-frame of uplink in a radio frames, and said N is smaller or equal to the number of the descending TTI of systemic presupposition;
The ascending resource scheduling unit; The set-up mode of the up TTI that is used for providing and the corresponding relation of up TTI and descending TTI according to up TTI acquiring unit; In the downlink frame that receives, extract ascending scheduling control signaling, carry out ascending resource scheduling each up TTI.
Visible by technique scheme, among the present invention, on the one hand,, N up TTI is set through merging sub-frame of uplink in the NodeB side, wherein, N is the positive integer smaller or equal to descending TTI number in the system, and for each up TTI the descending TTI of unique correspondence is set.Because the number N of the up TTI after being provided with smaller or equal to the number of descending TTI in the system, therefore can be set up the one-to-one relationship of up-downgoing TTI.Then, when sending ascending scheduling control signaling, will be carried at the ascending scheduling control signaling of each up TTI among the corresponding descending TTI of this up TTI and send.On the other hand; In the UE side; Obtain the one-to-one relationship of set-up mode and the up-downgoing TTI of up TTI among the NodeB, receiving after NodeB sends to downlink frame, according to the one-to-one relationship of set-up mode and the up-downgoing TTI of the capable TTI that obtains; Extraction is carried out ascending resource scheduling to the ascending scheduling control signaling of each up TTI.This shows; Mode of the present invention can be carried out normal scheduling of resource; Because each up TTI has its each self-corresponding descending TTI, therefore when the transmission ascending scheduling control signaling, directly carry ascending scheduling control signaling and get final product simultaneously; Need not increase the TTI that extra indication bit indicates this ascending scheduling control signaling to dispatch, thereby improve the control channel utilance of TDD system.
Description of drawings
Fig. 1 is the first kind frame structure sketch map of LTE system;
Fig. 2 is second type of frame structure sketch map of LTE system;
Fig. 3 is the method particular flow sheet that reduces ascending scheduling control signaling overhead in the embodiment of the invention one;
Fig. 4 is the method particular flow sheet that reduces ascending scheduling control signaling overhead in the embodiment of the invention two;
Fig. 5 is for carrying out the sketch map that up TTI is provided with in the embodiment of the invention two;
Fig. 6 is applied to the sketch map in the first kind frame structure of LTE system for the inventive method;
Fig. 7 is the concrete structure figure of NodeB provided by the invention;
Fig. 8 is the concrete structure figure of UE provided by the invention.
Embodiment
For making the object of the invention, technological means and advantage clearer, the present invention is explained further details below in conjunction with accompanying drawing.
Basic thought of the present invention is: the descending TTI that unique correspondence is set for each up TTI; Thereby directly utilize the corresponding descending TTI of up TTI to carry the ascending scheduling control signaling of this up TTI; Avoid increasing the TTI that extra indication bit is indicated uplink scheduling, to improve the control channel utilance.
Specifically in implementation process of the present invention,, guarantee the number of the number of up TTI smaller or equal to descending TTI in the system through setting to up TTI.Especially, when the sub-frame of uplink number is counted greater than descending sub frame, the part sub-frame of uplink is merged into a TTI, thereby guarantee the number of the number of up TTI smaller or equal to descending TTI in the system.
In embodiment, up TTI is provided with the mode that can adopt fixed configurations or adopts the mode according to the state of affairs flexible configuration.Below through specific embodiment explanation dual mode.
Embodiment one:
In the present embodiment, the employing fixed configurations mode that is provided with of up TTI.
Fig. 3 is the method particular flow sheet that reduces ascending scheduling control signaling overhead in the embodiment of the invention one.As shown in Figure 3, this method comprises:
Step 301, in advance to various ascending-descending subframes ratios, the corresponding relation of the set-up mode of collocating uplink TTI and up TTI and descending TTI.
Wherein, comprise the sub-frame of uplink that number N that up TTI is set and each up TTI comprise for the setting of up TTI, and the number N of up TTI should be smaller or equal to the number of descending TTI.
Usually, when the ascending-descending subframes ratio not simultaneously, the number of descending TTI is also different, so set-up mode and the up TTI of up TTI all carries out according to the different of ascending-descending subframes ratio with the correspondence setting of descending TTI in the present embodiment.
For example, table 1 is a kind of up TTI and up-downgoing TTI mapping table of fixed configurations, and this table designs to second type of frame format; Wherein, the TS0~TS6 of form first row representes the subframe numbers as descending sub frame, and the TS1~TS6 in the remaining row representes the subframe numbers as sub-frame of uplink; Up TTI utilizes ETS to represent; "-" representes that the descending sub frame of these row number does not exist, and promptly this subframe is a sub-frame of uplink, and the not corresponding up TTI of the represented descending TTI of the descending sub frame of these row is represented in " 0 ".
As shown in table 1, when the ascending-descending subframes ratio is 6: 1,6 sub-frame of uplink are merged into a up TTI-ETS1, and it is corresponding with unique descending TTI-TS0 that this ETS1 is set; When the ascending-descending subframes ratio was 5: 2, sub-frame of uplink TS1 is corresponding with the TTI of descending sub frame TS6 representative as a TTI, and (TS2~TS5) merge into a up TTI-ETS2, it is corresponding with the TTI of descending sub frame TS0 representative that this TTI is set with 4 sub-frame of uplink.And the like, the content in the table 1 has promptly embodied the fixed configurations relation, promptly under each ascending-descending subframes ratio, and the set-up mode of up TTI and up-downgoing TTI corresponding relation.Table 1 is kept among NodeB and the UE.
TS1 ?TS2 TS3 ?TS4 TS5 TS6 TS0
1∶6 - ?0 0 ?0 0 0 ETS1(TS1)
2∶5 - ?- 0 ?0 0 ETS1 (TS1) ETS2(TS2)
3∶4 - ?- - ?0 ETS1 (TS1) ETS2 (TS2) ETS3(TS3)
4∶3 - ?- - ?- ETS1 (TS1) ETS2 (TS2) ETS3 (comprising TS3&TS4)
5∶2 - ?- - ?- - ETS1 (TS1) ETS2 (comprising TS2, TS3, TS4& TS5)
6∶1 - ?- - ?- - - ETS1 (comprise TS1, TS2, TS3, TS4, TS5&TS6)
Table 1
Visible by above-mentioned table 1, in the present embodiment, when the sub-frame of uplink number was counted greater than descending sub frame, the up TTI number N of setting equated with the descending sub frame number all the time, and, when the sub-frame of uplink number is counted greater than descending sub frame, do not carry out the merging of sub-frame of uplink.In fact, the number N of up TTI also can be less than the descending sub frame number, and when the sub-frame of uplink number was counted less than sub-frame of uplink, the merging that also can carry out sub-frame of uplink was to form a up TTI.For example, be 5: 2 o'clock in the ascending-descending subframes ratio, ETS1 can be set comprise TS1~TS5, and corresponding with any descending TTI; In the ascending-descending subframes ratio is 2: 5 o'clock, ETS1 can be set comprise TS1~TS2, and corresponding with any descending TTI.
Step 302, NodeB obtains current ascending-descending subframes ratio, and according to current ascending-descending subframes ratio, N up TTI is set, and for each up TTI the descending TTI of unique correspondence is set.
Along with the operation of system, the ascending-descending subframes ratio possibly change.When the ascending-descending subframes ratio changed, NodeB and UE obtained current ascending-descending subframes ratio, and according to ascending-descending subframes ratio that is provided with in the step 301 and the corresponding relation of up TTI; I.e. table 1; Confirm under the current ascending-descending subframes ratio, the set-up mode of up TTI, and accomplish setting.
Step 303, UE obtains current ascending-descending subframes ratio, according to current ascending-descending subframes ratio, confirms the set-up mode of up TTI, and the corresponding relation of up TTI and descending TTI.
UE can obtain current ascending-descending subframes ratio through the configuration messages that NodeB issues, and according to the content of table 1, confirms under the current ascending-descending subframes ratio corresponding relation of the set-up mode of up TTI and up TTI and descending TTI.
Step 304, when needs carry out ascending resource scheduling, NodeB will be carried at the ascending scheduling control signaling of each up TTI among the corresponding descending TTI of this up TTI and transmit.
Under the current ascending-descending subframes ratio of confirming according to step 302, the corresponding relation of up TTI and descending TTI is carried at ascending scheduling control signaling among the descending TTI of correspondence and is transferred to UE.
Step 305, UE receives downlink frame, extracts the ascending scheduling control signaling of each up TTI, and carries out scheduling of resource.
In this step, UE is according under the current ascending-descending subframes ratio of confirming in the step 303, and the corresponding relation of the set-up mode of up TTI and up TTI and descending TTI extracts the ascending scheduling control signaling of each up TTI, and carries out scheduling of resource.When carrying out scheduling of resource; Up TTI set-up mode according to current carries out scheduling of resource, for example, if current up-downgoing ratio is 6: 1; Then according to the corresponding relation of table 1; The TTI of current scheduling unit comprises 6 sub-frame of uplink, need 6 sub-frame of uplink be dispatched as a Resource Block so, in the duration of 6 sub-frame of uplink, carries out during the transmission data.
So far, the method flow of the embodiment of the invention finishes.In the present embodiment, according to the difference of ascending-descending subframes ratio, therefore the also possible difference of the number of descending TTI carries out the setting of up TTI and the correspondence setting of up-downgoing TTI all is to carry out according to the difference of ascending-descending subframes ratio.In fact, the setting of up TTI also can not considered the ascending-descending subframes ratio, as long as guarantee the number of the number of up TTI smaller or equal to descending TTI.
Particularly, can in NodeB and UE, preserve fixing up TTI set-up mode and the corresponding relation of up-downgoing TTI in advance, then, when carrying out ascending resource scheduling, dispatch according to up TTI set-up mode and the up-downgoing TTI corresponding relation preserved.
Wherein, fixing up TTI set-up mode can be provided with arbitrarily, as long as guarantee to be provided with the number of the number of the up TTI in back smaller or equal to descending TTI.For example, all sub-frame of uplink are merged into a up TTI, corresponding any descending TTI; When carrying out ascending resource scheduling, the up TTI that forms with all sub-frame of uplink is that unit carries out, and the uplink scheduling signaling is carried among the corresponding descending TTI sends.Perhaps, all sub-frame of uplink are merged into a up TTI, and all descending sub frames are merged into a descending TTI, thereby can under any ascending-descending subframes ratio, all guarantee the one-to-one relationship of up-downgoing TTI.
In the present embodiment; The corresponding relation of the setting of up TTI and up-downgoing TTI adopts the mode of fixed configurations to carry out; This mode helps the simplified system design, handles simply, but very flexible; Can't be according to the set-up mode of the up TTI of the business need demands of different of time delay (for example to) adjustment and the corresponding relation of up-downgoing TTI, with further raising systematic function.
Embodiment two:
In the present embodiment, the employing flexible configuration mode that is provided with of up TTI.
Fig. 4 is the method particular flow sheet that reduces ascending scheduling control signaling overhead in the embodiment of the invention two.As shown in Figure 4, this method comprises:
Step 401, NodeB is provided with N up TTI according to the descending TTI number and the business need of current system.
In this step, the setting of up TTI comprises the number N that up TTI is set and the sub-frame of uplink that comprises among each TTI is set.Wherein, when the number N of up TTI is set, carry out, guarantee that N is smaller or equal to the descending sub frame number according to the descending TTI number of current system.When the sub-frame of uplink that each up TTI comprises is set, carry out according to the business need of system.
Particularly, when each descending sub frame constitutes a descending TTI, confirm the relation between the ascending-descending subframes number according to the ascending-descending subframes ratio, and when N is set, guarantee N, promptly descending TTI number smaller or equal to the descending sub frame number.For example, when the ascending-descending subframes ratio was 4: 3, it was 3 or 2 or 1 that up TTI number can be set.When merging a plurality of descending sub frames descending TTI of formation (being that descending TTI number is less than the descending sub frame number), confirm that according to descending TTI number N gets final product.
In embodiment one, to fixing ascending-descending subframes ratio, the sub-frame of uplink that each corresponding up TTI comprises is confirmed.But in fact, even the ascending-descending subframes ratio confirms that the sub-frame of uplink that each up TTI comprises also can have multiple possibility.In the present embodiment, when the sub-frame of uplink that comprises being set, can select different up TTI configurations according to the different business requirement of system for each up TTI.For example, when when higher, making this up TTI comprise less sub-frame of uplink number to the delay requirement of certain TTI; When the covering power that can provide certain TTI is had relatively high expectations, make this up TTI comprise more sub-frame of uplink number.
With Fig. 5 is example; The ascending-descending subframes ratio is 5: 2; The 1st line display among Fig. 5 carries out the ascending scheduling control signaling transmission manner according to background technology; The 2nd row carries out the ascending scheduling control signaling transmission manner to the 5th line display according to mode of the present invention, and wherein N can be set to 2 or 1, has five kinds of different TTI configuration modes.Particularly,
Situation 1: can be with TS1 as ETS1, with TS2, TS3, TS4 and TS5 merge into ETS2, then can the corresponding ETS1 of TS6, the corresponding ETS2 of TS0.
Situation 2: TS1 and TS2 are merged into ETS1, TS3, TS4 and TS5 merge into ETS2, then can TS6 corresponding ETS1, the corresponding ETS2 of TS0.
Situation 3: with TS1, TS2 and TS3 merge into ETS1, and TS4 and TS5 merge into ETS2, then can TS6 corresponding ETS1, the corresponding ETS2 of TS0.
Situation 4: with TS1, TS2, TS3 and TS4 merge into ETS1, with TS5 as ETS2, then can TS6 corresponding ETS1, the corresponding ETS2 of TS0.
Situation 5: with TS1, TS2, TS3, TS4 merges into ETS1, then can TS6 corresponding ETS1, the perhaps corresponding ETS1 of TS0, another descending sub frame does not have corresponding up TTI.
Step 402 is provided with the descending TTI of unique correspondence for each up TTI.
In this step, for N the up TTI that is provided with in the step 401 is provided with each self-corresponding descending TTI.The corresponding relation of this up-downgoing TTI can be specified when system design; In system's running, the corresponding relation according to this appointment is that up TTI is provided with corresponding descending TTI all the time, perhaps; Also can in system's running, the corresponding relation of up TTI and descending TTI be set in real time.
Step 403, NodeB sends the set-up mode of current up TTI and the corresponding relation of up TTI and descending TTI to UE.
In this step, NodeB can be carried at the corresponding relation of the set-up mode of current up TTI and up TTI and descending TTI in broadcast or the high-level signaling (for example MAC signaling, RNC signaling etc.) and send to UE.
Perhaps,, then can the corresponding relation of up-downgoing TTI be kept among the UE, needn't send to UE through NodeB if the corresponding relation of up-downgoing TTI is accomplished appointment when system design.
Step 404~405, when needs carry out ascending resource scheduling, NodeB will be carried at the ascending scheduling control signaling of each up TTI among the corresponding descending TTI of this up TTI and transmit; UE receives downlink frame, extracts the ascending scheduling control signaling of each up TTI, and carries out scheduling of resource.
The concrete operations of step 404~405 are identical with step 304~305 among the embodiment one, just repeat no more here.
So far, the method flow of the embodiment of the invention two finishes.In the present embodiment, therefore being provided with of up TTI can further improve systematic function according to the business need flexible configuration, improves user experience.
In addition, ascending scheduling control signaling of the present invention goes for the frame structure of TDD form, for LTE TDD system, all is suitable for for first kind frame format and second type of frame format.Above-mentioned is the explanation that example is carried out with second type of frame format all, identical for the execution mode of first kind frame format.For example, situation shown in Figure 6, in a radio frames, subframe 0 is a descending sub frame with subframe 5, all the other are sub-frame of uplink, then can subframe 1~subframe 4 be merged into a up TTI, and are corresponding with subframe 0; Subframe 6~subframe 9 is merged into a up TTI, corresponding with subframe 5.It is thus clear that the present invention all is suitable for for two kinds of frame formats of LTE TDD system.In fact, all can utilize mode of the present invention to carry out the transmission of ascending scheduling control signaling, and, be not limited in the OFDM modulation system in the LTE system the code modulation mode and the no requirement (NR) of physical layer for the TDD system.
In above-mentioned two embodiment, respectively fixed configurations mode and flexible configuration mode are specified.In fact; Can also two kinds of configuration modes be combined; For example; Can adopt (comprise number that up TTI is set and the sub-frame of uplink that comprises among each up TTI is set) mode of fixed configurations for the set-up mode of N up TTI, adopt the mode of flexible configuration for the corresponding relation of up-downgoing TTI; Perhaps, can adopt (comprise number that up TTI is set and the sub-frame of uplink that comprises among each up TTI is set) mode of flexible configuration, adopt the mode of fixed configurations for the corresponding relation of up-downgoing TTI for the set-up mode of N up TTI.
When in NodeB, adopting the fixed configurations mode, the UE side can be through receiving mode that NodeB issues or the mode that adopts fixed configurations; When in NodeB, adopting the flexible configuration mode, the UE side must be obtained corresponding configuration with the mode that issues through reception NodeB.
The above-mentioned method embodiment that is reduction ascending scheduling control signaling overhead provided by the invention.The present invention also provides NodeB and the UE that reduces ascending scheduling control signaling overhead.Particularly, Fig. 7 and Fig. 8 are respectively the concrete structure figure of NodeB provided by the invention and U E.
As shown in Figure 7, NodeB comprises that up TTI is provided with unit and ascending scheduling control signaling transmitting element.Wherein, Up TTI is provided with the unit, is used to be provided with N up TTI, and the descending TTI of unique correspondence is set for each up TTI; Said N is smaller or equal to the number of the descending TTI of systemic presupposition, and the corresponding relation of up TTI and descending TTI is offered the ascending scheduling control signaling transmitting element.
The ascending scheduling control signaling transmitting element is used for according to up TTI up TTI that the unit provides and the corresponding relation of descending TTI being set, and will be carried at the ascending scheduling control signaling of each up TTI among the descending TTI of the unique correspondence of this up TTI to send.
As shown in Figure 8, UE comprises up TTI acquiring unit and ascending resource scheduling unit.Wherein, Up TTI acquiring unit; Be used to obtain and preserve the set-up mode of N up TTI and the corresponding relation of up TTI and descending TTI; And offer the said N in ascending resource scheduling unit up TTI be NodeB in a radio frames through merging sub-frame of uplink setting, said N is smaller or equal to the number of the descending TTI of systemic presupposition.
The ascending resource scheduling unit; The set-up mode of the up TTI that is used for providing and the corresponding relation of up TTI and descending TTI according to up TTI acquiring unit; In the downlink frame that receives, extract ascending scheduling control signaling, carry out ascending resource scheduling each up TTI.
More than being merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a method that reduces ascending scheduling control signaling overhead is characterized in that, this method comprises:
In a radio frames, base station NodeB is provided with N up TTI through merging sub-frame of uplink, and said N is smaller or equal to the number of the descending TTI of systemic presupposition;
The descending TTI of unique correspondence is set for each the up TTI that is provided with;
To be carried at the ascending scheduling control signaling of each up TTI among the descending TTI of the unique correspondence of this up TTI and send.
2. method according to claim 1 is characterized in that, said merging sub-frame of uplink is: confirm the sub-frame of uplink number that each TTI comprises according to business need.
3. method according to claim 2 is characterized in that, and is high more to the delay requirement of up TTI, and the number of sub frames that this up TTI comprises is few more; Delay requirement to up TTI is low more, and the number of sub frames that this up TTI comprises is many more;
System is high more to the coverage requirement of up TTI, and the number of sub frames that this up TTI comprises is many more; System is low more to the coverage requirement of up TTI, and the number of sub frames that this up TTI comprises is few more.
4. method according to claim 1 is characterized in that, this method further comprises: in NodeB, preserve fixing up TTI set-up mode in advance;
Said NodeB is provided with N up TTI: according to said fixing up TTI set-up mode, N up TTI is set.
5. method according to claim 1; It is characterized in that; Said NodeB for the descending TTI that each up TTI is provided with unique correspondence is: according to up TTI that in NodeB, is provided with in advance and the corresponding relation of descending TTI, the descending TTI of unique correspondence is set for each up TTI.
6. a method that reduces ascending scheduling control signaling overhead is characterized in that, this method comprises:
User terminal UE obtains the set-up mode of N up TTI and the corresponding relation of up TTI and descending TTI; Said N up TTI is that NodeB is provided with through the merging sub-frame of uplink in a radio frames, and said N is smaller or equal to the number of the descending TTI of systemic presupposition;
According to the set-up mode of the up TTI that obtains and the corresponding relation of up TTI and descending TTI, in the downlink frame that receives, extract ascending scheduling control signaling to each up TTI, carry out ascending resource scheduling.
7. method according to claim 6 is characterized in that, the set-up mode that said UE obtains up TTI is:
In UE,, preestablish the set-up mode of up TTI, and, confirm corresponding said set-up mode according to the indicated current ascending-descending subframes ratio of NodeB to various ascending-descending subframes ratios;
Perhaps, in UE, preserve fixing up TTI set-up mode in advance;
Perhaps, receive the up TTI set-up mode that NodeB issues through broadcasting or high-level signaling.
8. method according to claim 6 is characterized in that, the mode that said UE obtains up TTI and descending TTI corresponding relation is: pre-configured in UE, perhaps, receive the said corresponding relation that NodeB issues through broadcasting or high-level signaling.
9. a base station NodeB is characterized in that, this NodeB comprises:
Up TTI is provided with the unit; Be used for N up TTI being set through merging sub-frame of uplink; The descending TTI of unique correspondence is set for each up TTI; Said N is smaller or equal to the number of the descending TTI of systemic presupposition, and the corresponding relation of up TTI and descending TTI is offered the ascending scheduling control signaling transmitting element;
The ascending scheduling control signaling transmitting element is used for according to up TTI up TTI that the unit provides and the corresponding relation of descending TTI being set, and will be carried at the ascending scheduling control signaling of each up TTI among the descending TTI of the unique correspondence of this up TTI to send.
10. a user terminal UE is characterized in that, this UE comprises:
Up TTI acquiring unit; Be used to obtain and preserve the set-up mode of N up TTI and the corresponding relation of up TTI and descending TTI; And offer the ascending resource scheduling unit; Said N up TTI is that NodeB is provided with through the merging sub-frame of uplink in a radio frames, and said N is smaller or equal to the number of the descending TTI of systemic presupposition;
The ascending resource scheduling unit; The set-up mode of the up TTI that is used for providing and the corresponding relation of up TTI and descending TTI according to up TTI acquiring unit; In the downlink frame that receives, extract ascending scheduling control signaling, carry out ascending resource scheduling each up TTI.
CN2007101756425A 2007-10-09 2007-10-09 Method and apparatus for reducing ascending scheduling control signaling overhead Active CN101409582B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2007101756425A CN101409582B (en) 2007-10-09 2007-10-09 Method and apparatus for reducing ascending scheduling control signaling overhead

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2007101756425A CN101409582B (en) 2007-10-09 2007-10-09 Method and apparatus for reducing ascending scheduling control signaling overhead

Publications (2)

Publication Number Publication Date
CN101409582A CN101409582A (en) 2009-04-15
CN101409582B true CN101409582B (en) 2012-05-23

Family

ID=40572405

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2007101756425A Active CN101409582B (en) 2007-10-09 2007-10-09 Method and apparatus for reducing ascending scheduling control signaling overhead

Country Status (1)

Country Link
CN (1) CN101409582B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101400140B (en) * 2007-09-30 2010-06-02 大唐移动通信设备有限公司 Method and apparatus for lowering cost of uplink scheduling control signaling
US8675579B2 (en) * 2010-05-03 2014-03-18 Futurewei Technologies, Inc. System and method for allocating network resources for a communications link
CN105325042B (en) 2014-05-30 2019-10-25 华为技术有限公司 A kind of sending, receiving method and equipment of Downlink Control Information
CN106413106B (en) 2015-07-28 2019-09-17 电信科学技术研究院 A kind of transmission method and device of upstream data
WO2017045128A1 (en) * 2015-09-15 2017-03-23 华为技术有限公司 Method, apparatus and system for sending or receiving control information
CN106793102B (en) * 2016-05-31 2020-02-11 北京展讯高科通信技术有限公司 System configuration indication method and device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1965521A (en) * 2004-05-06 2007-05-16 诺基亚公司 Redundancy version implementation for an uplink enhanced dedicated channel
CN101400140A (en) * 2007-09-30 2009-04-01 大唐移动通信设备有限公司 Method and apparatus for lowering overhead of uplink scheduling control signaling

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1965521A (en) * 2004-05-06 2007-05-16 诺基亚公司 Redundancy version implementation for an uplink enhanced dedicated channel
CN101400140A (en) * 2007-09-30 2009-04-01 大唐移动通信设备有限公司 Method and apparatus for lowering overhead of uplink scheduling control signaling

Also Published As

Publication number Publication date
CN101409582A (en) 2009-04-15

Similar Documents

Publication Publication Date Title
CN102625318B (en) System and method for service interworking between heterogeneous communication systems
CN101326774B (en) Compatible broadcast downlink and unicast uplink interference reduction for a wireless communication system
CN101414902B (en) Transmission method and apparatus for long term evolution TDD system
US8644270B2 (en) Method and system for configuring a frame in a communication system
CN101651515B (en) Method, system and device for adaptive modulation and coding
CN101442338B (en) Transmission method for upward control signaling of TDD system
CN101409582B (en) Method and apparatus for reducing ascending scheduling control signaling overhead
CN102077504B (en) Frame structure supporting legacy wireless transmission protocols
CN101425844B (en) Data transmission method and apparatus for time division duplexing system
CN102017750A (en) Method and devices for providing enhanced signaling
CN101616492B (en) Feedback method of ascending response message
US8483157B2 (en) Apparatus and method for allocating resources in a communication system
CN102594438A (en) Data transmission method, device and system
CN103843280B (en) Control and data are multiplexed into a Resource Block
CA2545528A1 (en) Method and system for transferring wireless transmit/receive unit-specific information
CN101400140B (en) Method and apparatus for lowering cost of uplink scheduling control signaling
CN101309522B (en) Uplink reply message feedback method and mobile terminal
CN101442816B (en) Transmission method for upward control signaling of TDD system
JP2016129340A (en) Relay method for radio communication system, and node
CN101415233B (en) Method and apparatus for resource distribution
CN101400146A (en) Method, apparatus and system for expanding coverage scope
TW200922182A (en) Method for transmitting and receiving data with superframe structure
CN101425991A (en) Broadcast information transmission method and apparatus
CN101877626A (en) Adaptive modulation and coding method, system and device
US20100208710A1 (en) Method for generating control channel and decoding control channel, base station and mobile station thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
ASS Succession or assignment of patent right

Owner name: INST OF TELECOMMUNICATION SCIENCE AND TECHNOLGOY

Free format text: FORMER OWNER: DATANG MOBILE COMMUNICATION EQUIPMENT CO., LTD.

Effective date: 20110620

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 100083 NO. 29, XUEYUAN ROAD, HAIDIAN DISTRICT, BEIJING TO: 100191 NO. 40, XUEYUAN ROAD, HAIDIAN DISTRICT, BEIJING

TA01 Transfer of patent application right

Effective date of registration: 20110620

Address after: 100191 Haidian District, Xueyuan Road, No. 40,

Applicant after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Address before: 100083 Haidian District, Xueyuan Road, No. 29,

Applicant before: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd.

C14 Grant of patent or utility model
GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road

Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road

Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20210601

Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing

Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd.

Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road

Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY