CN101499895B - Uplink scheduling method in time division duplex system - Google Patents
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Abstract
The invention discloses an upstream scheduling method of a time division duplex system, which configures a control window and a corresponding data window; and each upstream scheduling signal which is loaded by a downstream subframe in the control window instructs the scheduling of more than one upstream subframe in the corresponding data window. The upstream scheduling method of the time division duplex system further comprises the following steps: each upstream scheduling signal which is loaded by a downstream subframe in the control window is received and detected; and more than one upstream subframe in the corresponding data window is scheduled according to the instructions of the upstream scheduling signal. The upstream scheduling method of the time division duplex system can realize the scheduling of more than one upstream subframe by a single upstream scheduling signal which is loaded by the downstream subframe.
Description
Technical field
The present invention relates to the dispatching technique in time division duplex (TDD, the Time Division Duplexing) system, the uplink dispatch method in the particularly a kind of TDD system.
Background technology
3G (Third Generation) Moblie (3G, 3
RdGeneration) adopt code division multiple access (CDMA, Code-Division Multiple Access) mode, support multimedia service, in several years of future, can have higher competitiveness.In order to ensure in the longer time, making 3G keep this competitiveness, third generation partnership plan (3GPP, Third Generation Partnership Project) started the Long Term Evolution (LTE of 3G wireless interface technology, Long Term Evolution) research project, it comprise reduce time delay, improve user data rate, improve power system capacity and covering, pith such as reduction operator cost.
At present, the frame structure of the LTE project support comprises two classes.
1) first kind frame structure is applicable to TDD system and Frequency Division Duplexing (FDD) (FDD, FrequencyDivision Duplexing) system, and Fig. 1 shows this frame structure.The frame length of radio frames is 10 milliseconds (ms), is made up of 20 time slots, and each slot length is 0.5ms, uses these 20 time slots of #0～#19 mark in Fig. 1.Two continuous time slot are defined as a subframe.
The transmission of signal comprises among the 3G: by the base station to the transmission (being called down link) of terminal with by the transmission (being called up link) of terminal to base station.Based on above-mentioned first kind frame structure, for the FDD system, separately, therefore up link and down link each have 10 subframes and can use in every 10ms time on frequency domain for up link and down link.And for the TDD system, up link and downlink shared 10 subframes in every 10ms time, each subframe or distribute to up link or distribute to down link, the subframe of distributing to up link is called sub-frame of uplink, the subframe of distributing to down link is called descending sub frame, when sub-frame of uplink equates with descending sub frame quantity, the data rate of up link and down link is identical, when sub-frame of uplink and descending sub frame are unequal, can satisfy the different data-rate requirements of uplink downlink.
2) the second class frame structure is the optimization frame structure of a kind of TDD of being only applicable to system, and Fig. 2 shows this frame structure.Wireless frame length in this optimization frame structure is 10ms, each radio frames is split into the field of 2 5ms, the field of each 5ms is divided into conventional time slot and 1 special time slot that length is 1ms that 8 length are 0.5ms, this special time slot is by descending pilot frequency time slot (DwPTS, Downlinkpilot time slot), uplink pilot time slot (UpPTS, Uplink pilot time slot) and protection at interval (GP, Guard period) form, also can be referred to as special subframe; Per two conventional time slots are composed of a service subframe.The sequence number of subframe in every radio frames is set to #0～#9 in order, and subframe as described herein had both comprised above-mentioned special subframe, also comprises above-mentioned service subframe.
Similarly,, the subframe of distributing to up link is called sub-frame of uplink, the subframe of distributing to down link is called descending sub frame based on this frame structure.
In the TDD system, the descending control signaling indication that the professional transmission of uplink downlink need be sent by the base station, wherein uplink traffic transmission is carried out in the indication of the terminal descending control signaling that need send according to the base station.
The descending control signaling that above-mentioned base station sends comprises following three parts:
The first, physical control channel format indication channel (PCFICH, Physical control formatindicator channel), this channel is present in each descending sub frame, carry 2 bit informations, be used for OFDM (OFDM) symbolic number of indicating place subframe descending control signaling shared;
The second, the automatic request retransmission indicating channel of physical mixed (PHICH, Physical hybrid-ARQindicator channel), this channel is present in each descending sub frame, be used to indicate mixing to retransmit (HARQ automatically for ul transmissions, Hybrid Automatic Repeat Request) response message of process, promptly confirm (Acknowledgement) or non-affirmation (NACK, NonAcknowledgement) message;
Three, Physical Downlink Control Channel (PDCCH, Physical downlink control channel), this channel is present among the DwPTS of each descending sub frame and special time slot, and OFDM symbol quantity shared in its place subframe is indicated by above-mentioned PCFICH.Information such as bearing downlink dispatch (DLgrant), uplink scheduling signaling (UL grant) and power control among the PDCCH, the business transmission of uplink downlink is indicated by above-mentioned descending scheduling signaling and uplink scheduling signaling.Wherein can the dispatching downlink subframe according to the indication of descending scheduling signaling, carry out downlink traffic transmission; Can the dispatching uplink subframe according to the indication of uplink scheduling signaling, carry out uplink traffic transmission, therefore terminal on the implementation industry be engaged in before the transmission, the base station can send the uplink scheduling signaling to terminal earlier, terminal is according to the indication of detected uplink scheduling signaling, carry out transfer of data at corresponding sub-frame of uplink, this process also can be called uplink scheduling.
For the FDD system, its uplink downlink separates at frequency domain, comprise the frequency domain position information of scheduling resource in uplink scheduling signaling and the descending scheduling signaling, but do not comprise the corresponding relation with time domain, so determine the corresponding relation of time domain by the definition relative time delay.Fig. 3 shows the scheduling sequential of FDD system, wherein 301 indications is the uplink scheduling signaling of carrying in the descending sub frame, 302 the indication be the descending scheduling signaling of carrying in the descending sub frame, 303 the indication be the downlink data that carries in the descending sub frame, the upstream data that carries in the sub-frame of uplink of 304 indications, the subframe of dotted arrow indication uplink scheduling signaling and descending scheduling signaling scheduling.It is sub-frame of uplink that the short solid arrow that each subframe inside makes progress is indicated current subframe, and it is descending sub frame that the inner downward short solid arrow of each subframe is indicated current subframe.This subframe of descending scheduling signaling scheduling as can be seen, and the sub-frame of uplink after the uplink scheduling signaling scheduling constant time lag.
For the TDD system, the same in descending scheduling sequential and the FDD system, it is exactly this subframe of descending scheduling signaling scheduling, but since time of TDD system discontinuous, support multiple uplink and downlink timeslot ratio, therefore in uplink scheduling, can't adopt with the FDD system in identical mode, promptly determine the uplink scheduling sequential by setting a simple constant time lag relation.
Uplink scheduling sequential when Fig. 4 shows descending sub frame more than sub-frame of uplink, if each sequence of subframes serial number is 0～9, in Fig. 4, use #0～#9 to identify each subframe, then subframe 0～subframe 1, subframe 4～subframe 6, subframe 9 is a descending sub frame, residue is sub-frame of uplink, supposing in the TDD system needs to guarantee 3ms from receiving and detect the uplink scheduling signaling to the minimum time-delay of dispatching uplink subframe, promptly need to guarantee the time-delay of 3 subframe lengths, the uplink scheduling signaling scheduling subframe 7 in the subframe 1 then, time-delay is 5 subframes, uplink scheduling signaling scheduling subframe 8 in the subframe 4, time-delay are 3 subframes.As seen, during more than sub-frame of uplink,, but can concern the one-to-one relationship of setting up uplink scheduling signaling and sub-frame of uplink at descending sub frame by defining different time-delays though the time-delay of the uplink scheduling signaling correspondence of different subframes may be inconsistent.
Uplink scheduling sequential when Fig. 5 shows descending sub frame and is less than sub-frame of uplink, each sequence of subframes number still serial number is 0～9, in Fig. 5, use #0～#9 to identify each subframe, wherein subframe 0～subframe 1, subframe 5～subframe 6 is a descending sub frame, residue is sub-frame of uplink, supposing in the TDD system still needs to guarantee 3ms from receiving and detect the uplink scheduling signaling to the minimum time-delay of dispatching uplink subframe, promptly need to guarantee the time-delay of 3 subframe lengths, the uplink scheduling signaling scheduling subframe 4 in the subframe 0 then, time-delay is 5 subframes, uplink scheduling signaling scheduling subframe 7 in the subframe 1, time-delay is 6 subframes, but subframe 8 must be by the scheduling of the descending sub frame before the subframe 4 for the requirement of 3ms for satisfying minimum time-delay, but the descending sub frame before the subframe 4 includes only subframe 0 and subframe 1, and the uplink scheduling signaling of carrying all is responsible for the scheduling of other sub-frame of uplink in subframe 0 and the subframe 1, so when descending sub frame is less than sub-frame of uplink, can't all set up relation one to one for all sub-frame of uplink and uplink scheduling signaling, can't can't be scheduled with the sub-frame of uplink that the uplink scheduling signaling is set up corresponding relation.
When being less than sub-frame of uplink in order to solve above-mentioned descending sub frame, the problem that uplink scheduling occurs in the TDD system, a kind of solution thinking has been proposed at present, promptly use the uplink scheduling signaling of carrying in the descending sub frame, dispatch an above sub-frame of uplink, but also do not propose the specific implementation method in this solution at present.
Summary of the invention
The invention provides the uplink dispatch method in a kind of TDD system, use this method can realize the above sub-frame of uplink of uplink scheduling signaling scheduling that carries in the descending sub frame.
Technical scheme of the present invention is achieved in that
Uplink dispatch method in a kind of tdd systems is determined the time slot ratio of descending sub frame and sub-frame of uplink in the radio frames; And, will comprise the number of the descending sub frame of described time slot ratio specified quantity according to time slot ratio, be configured to control window; From the default time-delay of being separated by of the end position of described control window, will comprise the number of the sub-frame of uplink of described time slot ratio specified quantity, be configured to the data window of described control window correspondence; The uplink scheduling signaling that each descending sub frame carried in the described control window is carried an above sub-frame of uplink sequence number information in the corresponding data window, an above sub-frame of uplink in the indication scheduling corresponding data window, and this method also comprises:
Receive and detect the uplink scheduling signaling that each descending sub frame carried in the described control window;
Obtain the sub-frame of uplink sequence number information of carrying in the uplink scheduling signaling that each descending sub frame carried in the described control window;
According to the indication of described sub-frame of uplink sequence number information, an above sub-frame of uplink in the scheduling corresponding data window.
Preferably, described default time-delay is determined according to described reception and required shortest time of detection uplink scheduling signaling.
Preferably, described sub-frame of uplink sequence number information is realized by bit map.
Preferably, described radio frames comprise 10 milliseconds first radio frames and 10 milliseconds second radio frames and with 5 milliseconds be one-period, described first radio frames and second radio frames comprise descending sub frame 0～1, sub-frame of uplink 2～4, descending sub frame 5～6 and sub-frame of uplink 7～9 in proper order; Wherein descending sub frame 1 and descending sub frame 6 are special subframe, carry the uplink scheduling signaling; Described default time-delay is 2 milliseconds; The time slot ratio of described descending sub frame and sub-frame of uplink is 1: 3;
Described control window comprises control window 1～3, wherein control descending sub frame 0 and descending sub frame 1 that window 1 comprises first radio frames, control window 2 comprises the descending sub frame 5 and the descending sub frame 6 of first radio frames, and control window 3 comprises descending sub frame 0 and the descending sub frame 1 in second radio frames;
Described data window comprises the data window 2 of the data window 1 of corresponding control window 1, corresponding control window 2 and the data window 3 of corresponding control window 3; Wherein data window 1 comprises sub-frame of uplink 4, descending sub frame 5, descending sub frame 6, sub-frame of uplink 7 and the sub-frame of uplink 8 in first radio frames; Data window 2 comprises the sub-frame of uplink 9 in first radio frames, descending sub frame 0, descending sub frame 1, sub-frame of uplink 2 and the sub-frame of uplink 3 in second radio frames; Data window 3 comprises sub-frame of uplink 4, descending sub frame 5, descending sub frame 6, sub-frame of uplink 7 and the sub-frame of uplink 8 in second radio frames.
Preferably, the sub-frame of uplink sequence number information that the uplink scheduling signaling of carrying is carried in the descending sub frame 0 is: the combination in any of sub-frame of uplink 4, sub-frame of uplink 7 and sub-frame of uplink 8; The sub-frame of uplink sequence number information that the uplink scheduling signaling of carrying is carried in the descending sub frame 1 is: the combination in any of sub-frame of uplink 7 and sub-frame of uplink 8.
Preferably, the combination in any of sub-frame of uplink 4, sub-frame of uplink 7 and sub-frame of uplink 8 comprises: sub-frame of uplink 4, sub-frame of uplink 7 and sub-frame of uplink 8; Perhaps, sub-frame of uplink 4 and sub-frame of uplink 7; Perhaps sub-frame of uplink 4;
The combination in any of described sub-frame of uplink 7 and sub-frame of uplink 8 comprises: sub-frame of uplink 7 and sub-frame of uplink 8; Perhaps, sub-frame of uplink 7; Perhaps, sub-frame of uplink 8.
Preferably, the affirmation or the unacknowledged information of the automatic retransmission processes of mixing of indication transmitting uplink data are configured in the described descending sub frame 0, perhaps are configured in the described descending sub frame 1, perhaps on average are configured in descending sub frame 0 or the descending sub frame 1.
As seen, the uplink dispatch method in the TDD provided by the invention system, configuration control window and corresponding data window, the uplink scheduling signaling that each descending sub frame carried in this control window, an above sub-frame of uplink of corresponding data window is dispatched in indication.When carrying out uplink scheduling, at first detect the uplink scheduling signaling that descending sub frame carried in the control window, then according to the indication of described uplink scheduling signaling, an above sub-frame of uplink in the scheduling corresponding data window has been realized the above sub-frame of uplink of uplink scheduling signaling scheduling that descending sub frame carries.
Description of drawings
Fig. 1 is a first kind frame structure schematic diagram of the prior art;
Fig. 2 is the second class frame structure schematic diagram of the prior art;
Fig. 3 is the scheduling sequential schematic diagram in the FDD system;
Fig. 4 is first kind of scheduling sequential schematic diagram in the TDD system;
Fig. 5 is second kind of scheduling sequential schematic diagram in the TDD system;
Fig. 6 is the flow chart of the uplink dispatch method in the TDD of the present invention system;
Fig. 7 a is the inventive method in conjunction with the schematic diagram of control window and data window corresponding relation in first kind of situation behind the hypothesis application scenarios;
Fig. 7 b is the inventive method in conjunction with the schematic diagram of control window and data window corresponding relation in second kind of situation behind the hypothesis application scenarios;
Fig. 8 is the corresponding relation schematic diagram of control window and data window among the embodiment of the inventive method.
Embodiment
For making objects and advantages of the present invention clearer, the present invention is further detailed explanation below in conjunction with drawings and Examples.
Fig. 6 is for the flow chart of the uplink dispatch method in the TDD of the present invention system, before flow process begins, and in radio frames, configuration control window and corresponding data window; The uplink scheduling signaling that each descending sub frame carried in the described control window, an above sub-frame of uplink in the indication scheduling corresponding data window, an above sub-frame of uplink described here refers at least one sub-frame of uplink, promptly comprises one or more situation.Flow process shown in Figure 6 comprises:
Step 601: receive and detect the uplink scheduling signaling that each descending sub frame carried in the described control window.
Step 602: according to the indication of described uplink scheduling signaling, an above sub-frame of uplink in the scheduling corresponding data window.
In method provided by the invention, the configuration of control window and data window can be according to the time slot ratio of descending sub frame in the radio frames and sub-frame of uplink, and this point will provide detailed description hereinafter.
In method provided by the invention, in order to realize by the uplink scheduling signaling of carrying in the descending sub frame, an above sub-frame of uplink in the indication scheduling corresponding data window, can be in the uplink scheduling signaling that descending sub frame carried in the control window, carry an above sub-frame of uplink sequence number information, these sub-frame of uplink sequence number information are indicated the sub-frame of uplink in this control window corresponding data window, according to the sub-frame of uplink sequence number information of carrying, can know the sub-frame of uplink in the corresponding scheduling which or which of the uplink scheduling signaling corresponding data window.
If but consider that carrying the sub-frame of uplink sequence number information in the uplink scheduling signaling can increase signaling consumption, the basic mapping principle that the inventive method can be set comprises:
When 1. sub-frame of uplink is less than descending sub frame, in the uplink scheduling signaling, do not increase the subframe sequence number,, realize of the scheduling of a uplink scheduling signaling a sub-frame of uplink by setting up the mapping relations one to one of uplink scheduling signaling and institute's dispatching uplink subframe;
When 2. sub-frame of uplink is more than descending sub frame, in the uplink scheduling signaling, carry an above sub-frame of uplink sequence number information, by above sub-frame of uplink of this sub-frame of uplink sequence number information indication scheduling.
In the LTE standard progress of current TDD system, widespread usage is optimized frame structure, is example with this frame structure, if represent descending sub frame with DL, represents sub-frame of uplink with UL, has determined following time slot ratio at present:
, can comprise: 1DL:3UL, 2DL:2UL, 3DL:1UL during with 5ms as one-period;
, can comprise: 6DL:3UL, 7DL:2UL, 8DL:1UL, 3DL:5UL during with 10ms as one-period.
Descending sub frame is less than the situation of sub-frame of uplink in the above-mentioned as can be seen time slot ratio, 1DL:3UL when only comprising with 5ms as one-period, 3DL:5UL when being one-period with 10ms, but wherein 3DL:5UL is comparatively special, owing to optimize in the frame structure and comprise special time slot, and the DwPTS in the special time slot can control signaling by bearing downlink, therefore when using this frame structure, comprise 2 DwPTS in the one-period, be equivalent to increase the descending sub frame of two carrying uplink scheduling signalings, therefore in fact time slot ratio is equivalent to be 5DL:5UL, also can be according to the situation of descending sub frame more than sub-frame of uplink, mapping relations realize uplink scheduling by setting up one to one.
For the situation of sub-frame of uplink more than descending sub frame, based on frame structure control window and data window are set, wherein controlling window is a control set that is made of the descending sub frame that carries the uplink scheduling signaling, can comprise one or one group of descending sub frame, data window is a data set that is made of the sub-frame of uplink that carries upstream data, can comprise one or one group of sub-frame of uplink.The size of control window and data window is according to the time slot ratio configuration of descending sub frame in the radio frames and sub-frame of uplink, the length that will comprise the descending sub frame of time slot ratio specified quantity, be configured to control window, from the default time-delay of being separated by of the end position of described control window, the length that will comprise the sub-frame of uplink of described time slot ratio specified quantity is configured to control the data window of window correspondence.For above-mentioned control window and data window dispose mapping relations one to one, i.e. data window of the corresponding control of control window, the control window with control between the window, not overlapping between data window and the data window.
There is default time-delay between control window and the data window, be to consider that terminal need receive and detect after the uplink scheduling signaling, could be according to the indication dispatching uplink subframe of uplink scheduling signaling, just can carry out uplink traffic transmission then, therefore control between window and the corresponding data window and need to be provided with a time-delay, should default time-delay determine, determine that specifically mode will provide detailed description among the embodiment hereinafter according to above-mentioned reception and required shortest time of detection uplink scheduling signaling.
Be clearer explanation method provided by the invention, the application scenarios with hypothesis is that example describes below.Suppose that application scenarios is as follows: radio frames is one-period with 5ms, and the ratio of descending sub frame and sub-frame of uplink is 2: 3, and professional transmission is based on the radio frames of 10ms, and a radio frames comprises 10 subframes.
Fig. 7 a and Fig. 7 b show the two kind situations of method provided by the invention under above-mentioned hypothesis application scenarios respectively.The control window size is set to 2 descending sub frames, and the data window size is set to 3 sub-frame of uplink, the uplink scheduling signaling of promptly per two descending sub frames carrying, 3 sub-frame of uplink in the indication scheduling corresponding data window.
In Fig. 7 a, control window 1 corresponding data window 1, control window 2 corresponding data windows 2, suppose to be one and half radio frames shown in Fig. 7 a, comprise the subframe 0～9 of first radio frames and the subframe 0～4 of second radio frames, wherein each subframe is 1ms, identifies each subframe with numbering #0～#9 in the drawings.If receiving and detecting the uplink scheduling required shortest time of signaling is 3ms, then respectively control the condition that must meet the 3ms time-delay between the sub-frame of uplink that first descending sub frame in the window and corresponding data window need dispatch, can determine respectively to control the default time-delay Td1=2ms between window and the corresponding data window thus.Based on this frame structure, the control window comprises two descending sub frames in the current period, data window is to meet the condition that comprises 3 sub-frame of uplink, just should comprise 1 sub-frame of uplink in the current period, 2 sub-frame of uplink in following one-period and 2 descending sub frames in following one-period, actual size is 5 subframes.As can be seen, each is controlled and is not had overlapping situation between the window, does not also have overlapping situation between each data window, has overlapping situation between window and the data window but control.
In Fig. 7 b, identical among the setting of control window and data window and Fig. 7 a, be time delay Td2=5ms, greater than the time delay Td1 among Fig. 7 a, therefore can draw according to the analytical method among Fig. 7 a, data window just comprises 3 sub-frame of uplink in the current period among Fig. 7 b, and actual size also is 3 subframes.As seen based on concrete frame structure, when the time delay that is provided with not simultaneously, the actual size of data window may be different.
Enumerate a specific embodiment of method provided by the invention below.In the present embodiment, optimization frame structure based on the TDD system, promptly a radio frames is 10ms, every 5ms forms a field, comprise in each field that 8 length are conventional time slot and special time slot that length is 1ms of 0.5ms, per 2 conventional time slots are formed the service subframe of a 1ms, comprise DwPTS, UpPTS and GP in the special time slot, also can be called special subframe, receiving and detect the uplink scheduling required time of signaling is at least 3ms, i.e. uplink scheduling signaling and be scheduled and satisfy the time delay of 3ms between the up subframe at least.
The analysis of having done according to the front, optimization frame structure based on this TDD system, in the present fixed time slot ratio, sub-frame of uplink only comprises the situation of the 1DL:3UL when being one-period with 5ms more than the situation of descending sub frame, Fig. 8 shows the corresponding relation of controlling window and data window in this case, comprise 4 cycle 20ms altogether, corresponding two radio frames, control window in each cycle all comprises 1 descending sub frame and 1 DwPTS, therefore the special time slot that comprises DwPTS also can be regarded as the descending sub frame of bearing downlink control signaling.What 801 among Fig. 8 indicated is the uplink scheduling signaling of carrying in the descending sub frame, 802 the indication be the upstream data that carries in the sub-frame of uplink, wherein different horizontal stripes is represented the upstream data of different terminals in each sub-frame of uplink, 803 indications be the PHICH that is carried among the DwPTS.
The sequence number that the subframe of first 5ms in the cycle is set is a serial number 0～4, in Fig. 8, adopt #0～#4 sign, the corresponding descending sub frame 1 of special time slot wherein, the sequence number of the subframe of second 5ms in the cycle is a serial number 5～9, in Fig. 8, adopt #5～#9 sign, identical in the cycle of corresponding 6, the three 5ms cycles of descending sub frame of special time slot and the 4th 5ms each sequence of subframes in the cycle number and above-mentioned first 5ms cycle and second 5ms wherein.
According to setting shown in Figure 8, can control the uplink scheduling signaling of descending sub frame carrying in the window by each, any sub-frame of uplink in the scheduling corresponding data window or sub-frame of uplink combination.For simplifying the complexity that realizes, the dispatch group cooperation can be gone out some restrictions, for example use the form of set to represent to control the sub-frame of uplink situation that the uplink scheduling signaling in the window can be dispatched, descending sub frame 0 in first radio frames and second radio frames and the descending sub frame 5 uplink scheduling signaling of carrying, can indicate scheduling { 4,7,8}, { 4,7} and the { sub-frame of uplink of these three kinds of combined situation of 4}, wherein { 4,7,8} represents uplink scheduling signaling dispatching uplink subframe 4 simultaneously, sub-frame of uplink 7 and sub-frame of uplink 8 carry out uplink traffic transmission, and the DwPTS in each cycle carries the uplink scheduling signaling, can indicate scheduling 7,8}, { 7} and the { sub-frame of uplink of these several situations of 8}.So just can use the uplink scheduling signaling that descending sub frame carried in the control window, realize scheduling all sub-frame of uplink in the corresponding data window.
Above-mentioned scheduling combination of carrying the configuration of uplink scheduling signaling for different descending sub frame, can make descending sub frame 0 in each radio frames and the uplink scheduling signaling distribution equilibrium in the descending sub frame 1, the scheduling of the sub-frame of uplink of each corresponding 3 kinds of combined situation, and time-delay is minimum, data window is controlled window relatively and is postponed 2ms, satisfies the condition of control signaling to transfer of data needs 3ms processing delay.
Therefore, in this specific embodiment, a uplink scheduling signaling can be indicated scheduling 1,2 or 3 sub-frame of uplink simultaneously, the sub-frame of uplink sequence number information of adding in the uplink scheduling signaling can use the mode of bit map to realize, for example use 111} represent 4,7,8}, use 110} represent 4,7}.Certain above-mentioned bit map also only is a kind of specific implementation of subframe sequence number indication information, according to the difference of application demand, can also adopt other implementation.
Further, the PHICH of loading ACK information or nack message also can dispose in DwPTS, also can dispose in subframe 0, perhaps also can on average configuration in DwPTS and subframe 0 simultaneously.
In sum, more than be the preferred embodiment of present embodiment only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the uplink dispatch method in the tdd systems is characterized in that, determines the time slot ratio of descending sub frame and sub-frame of uplink in the radio frames; And, will comprise the number of the descending sub frame of described time slot ratio specified quantity according to time slot ratio, be configured to control window; From the default time-delay of being separated by of the end position of described control window, will comprise the number of the sub-frame of uplink of described time slot ratio specified quantity, be configured to the data window of described control window correspondence; The uplink scheduling signaling that each descending sub frame carried in the described control window is carried an above sub-frame of uplink sequence number information in the corresponding data window, an above sub-frame of uplink in the indication scheduling corresponding data window, and this method also comprises:
Receive and detect the uplink scheduling signaling that each descending sub frame carried in the described control window;
Obtain the sub-frame of uplink sequence number information of carrying in the uplink scheduling signaling that each descending sub frame carried in the described control window;
According to the indication of described sub-frame of uplink sequence number information, an above sub-frame of uplink in the scheduling corresponding data window.
2. the method for claim 1 is characterized in that, described default time-delay is determined according to described reception and required shortest time of detection uplink scheduling signaling.
3. the method for claim 1 is characterized in that, described sub-frame of uplink sequence number information is realized by bit map.
4. the method for claim 1, it is characterized in that, described radio frames comprise 10 milliseconds first radio frames and 10 milliseconds second radio frames and with 5 milliseconds be one-period, described first radio frames and second radio frames comprise descending sub frame 0～1, sub-frame of uplink 2～4, descending sub frame 5～6 and sub-frame of uplink 7～9 in proper order; Wherein descending sub frame 1 and descending sub frame 6 are special subframe, carry the uplink scheduling signaling; Described default time-delay is 2 milliseconds; The time slot ratio of described descending sub frame and sub-frame of uplink is 1: 3;
Described control window comprises control window 1～3, wherein control descending sub frame 0 and descending sub frame 1 that window 1 comprises first radio frames, control window 2 comprises the descending sub frame 5 and the descending sub frame 6 of first radio frames, and control window 3 comprises descending sub frame 0 and the descending sub frame 1 in second radio frames;
Described data window comprises the data window 2 of the data window 1 of corresponding control window 1, corresponding control window 2 and the data window 3 of corresponding control window 3; Wherein data window 1 comprises sub-frame of uplink 4, descending sub frame 5, descending sub frame 6, sub-frame of uplink 7 and the sub-frame of uplink 8 in first radio frames; Data window 2 comprises the sub-frame of uplink 9 in first radio frames, descending sub frame 0, descending sub frame 1, sub-frame of uplink 2 and the sub-frame of uplink 3 in second radio frames; Data window 3 comprises sub-frame of uplink 4, descending sub frame 5, descending sub frame 6, sub-frame of uplink 7 and the sub-frame of uplink 8 in second radio frames.
5. method as claimed in claim 4 is characterized in that the sub-frame of uplink sequence number information that the uplink scheduling signaling of carrying is carried in the descending sub frame 0 is: the combination in any of sub-frame of uplink 4, sub-frame of uplink 7 and sub-frame of uplink 8; The sub-frame of uplink sequence number information that the uplink scheduling signaling of carrying is carried in the descending sub frame 1 is: the combination in any of sub-frame of uplink 7 and sub-frame of uplink 8.
6. method as claimed in claim 5 is characterized in that, the combination in any of sub-frame of uplink 4, sub-frame of uplink 7 and sub-frame of uplink 8 comprises: sub-frame of uplink 4, sub-frame of uplink 7 and sub-frame of uplink 8; Perhaps, sub-frame of uplink 4 and sub-frame of uplink 7; Perhaps sub-frame of uplink 4;
The combination in any of described sub-frame of uplink 7 and sub-frame of uplink 8 comprises: sub-frame of uplink 7 and sub-frame of uplink 8; Perhaps, sub-frame of uplink 7; Perhaps, sub-frame of uplink 8.
7. as claim 4 or 5 described methods, it is characterized in that the affirmation or the unacknowledged information of the automatic retransmission processes of mixing of indication transmitting uplink data are configured in the described descending sub frame 0, perhaps be configured in the described descending sub frame 1, perhaps on average be configured in descending sub frame 0 or the descending sub frame 1.
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| CN102035795B (en) * | 2009-09-30 | 2014-07-02 | 中兴通讯股份有限公司 | Transmission method of notification message of multimedia broadcasting multicast business, device and system thereof |
| CN102088306B (en) * | 2010-07-15 | 2013-06-26 | 北京大学 | Uplink pilot signal transmitting method for satellite communication in TDD (time division duplex) or HFDD (half frequency division duplex) mode |
| CN107646178A (en) * | 2015-03-10 | 2018-01-30 | 科锐安特股份有限公司 | Method and apparatus for managing data frame transmission |
| CN107113117B (en) * | 2015-04-17 | 2021-04-20 | 华为技术有限公司 | Information feedback method, equipment and system |
| JP6476311B2 (en) * | 2015-04-17 | 2019-02-27 | パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカＰａｎａｓｏｎｉｃ Ｉｎｔｅｌｌｅｃｔｕａｌ Ｐｒｏｐｅｒｔｙ Ｃｏｒｐｏｒａｔｉｏｎ ｏｆ Ａｍｅｒｉｃａ | Rate matching of machine type communication channels in time division duplex (TDD) |
| CN106992839B (en) * | 2016-01-21 | 2020-11-20 | 中兴通讯股份有限公司 | Data transmission method and device |
| CN105592558B (en) * | 2016-02-05 | 2018-01-09 | 宇龙计算机通信科技(深圳)有限公司 | A kind of data transmission method, terminal and data transmission system |
| CN106102168A (en) * | 2016-05-20 | 2016-11-09 | 深圳市金立通信设备有限公司 | The control method of a kind of data transmission and relevant device |
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