CN103716143A

CN103716143A - Time division duplex dynamic frame structure configuration method, determination method and corresponding device

Info

Publication number: CN103716143A
Application number: CN201210370368.8A
Authority: CN
Inventors: 张晓博
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2012-09-28
Filing date: 2012-09-28
Publication date: 2014-04-09
Anticipated expiration: 2032-09-28
Also published as: CN103716143B

Abstract

The invention discloses a time division duplex dynamic frame structure configuration method, a time division duplex dynamic frame structure determination method and a corresponding device. With the time division duplex dynamic frame structure configuration method, determination method and the corresponding device adopted, robustness can be improved, and no restriction is imposed on scheduling. The time division duplex dynamic frame structure configuration method including the following steps that: a frame structure is selected, and sub frames in one group of downlink sub frames of the frame structure, which arrives at use equipment at first, are determined, wherein this group of downlink sub frames is corresponding to the same uplink feedback, and the uplink feedback is used for indicating whether data receiving of corresponding downlink sub frame groups is correct or not; and downlink allocation index (DAI) values in downlink control information (DCI) in the sub frames are set, wherein the downlink allocation index (DAI) values are used for performing dynamic frame structure indication. A dynamic frame structure configuration device includes a frame structure determination module, a sub frame determination module and a configuration module. According to the time division duplex dynamic frame structure configuration method provided by the invention, downlink allocation index (DAI) bits in the downlink control information (DCI) of specific sub frames are utilized to dynamically configure the frame structure, and therefore, no restriction will be imposed on the scheduling, and the robustness of a system can be improved.

Description

A kind of time division duplex dynamic frame structure configuration method, determine method and related device

Technical field

The present invention relates to the communications field, be specifically related to a kind of time division duplex (Time Division Duplex is called for short TDD) dynamic frame structure configuration method, determine method and related device.

Background technology

LTE(Long Term Evolution, Long Term Evolution) and LTE-A(LTE-advance, LTE evolution), in standard, the system-frame of TDD is comprised of ten subframes.3GPP supports altogether 7 kinds of frame structures; as shown in table 1, wherein, D represents that subframe is used for downlink transfer; U represents that subframe is used for uplink; S represents special subframe and comprises three special time slots, and (Downlink PilotTime Slot, referred to as DwPTS for descending pilot frequency time slot; for downlink transfer), protection interval (Guard Period; referred to as GP) and uplink pilot time slot (Uplink Pilot Time Slot, referred to as UpPTS, for uplink).

Table 1:TDD system uplink/downlink frames structure

In 3GPP standard, be the frame structure that comes notifying user equipment (UE) current service cell to configure by system information SIB-I at present.Follow according to existing standard SIB(System Information Block, system information block) the information minimum change cycle is 640ms.At 3GPP RAN54(2011 December) in the military pre-research project of " the self adaptation tdd frame structure " of inferior plenary session official approval, the frame structure of more dynamic distribution T DD system becomes possibility.The characteristic that the variable cycle of shortening TDD system frame structure can make full use of TDD is to support better the transmission of non-symmetrical service.

Utilizing physical layer signaling dynamically to adjust frame structure is the method for salary distribution the most flexibly, yet physical layer signaling disposes several problems, needs to solve:

1, dynamic DCI(Downlink Control Information, Downlink Control Information) design of signaling: no matter design new DCI form or define new RNTI(Radio Network Temporary Identifier) all can bring extra UE burden, and the restriction in scheduling, such as needs distribute a plurality of subframes to UE;

2, the dynamic robustness of DCI: dynamically another problem of DCI is robustness, if UE is correct demodulation PDCCH, can not obtain actual transmissions frame structure.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of time division duplex dynamic frame structure configuration method, determines method and related device, improves robustness, and unrestricted to dispatching.

For solving the problems of the technologies described above, the invention provides a kind of time division duplex (TDD) dynamic frame structure configuration method, comprising:

Selected a kind of frame structure, and will arrive the earliest the subframe of subscriber equipment in the descending sub frame of one group of corresponding same uplink feedback of definite described frame structure, described uplink feedback is used to indicate corresponding descending sub frame group data receiver correctness;

Downlink allocation index (DAI) value in down link control information (DCI) in described subframe is set, and described DAI value is used for carrying out the indication of dynamic frame structure.

Further, selected a kind of frame structure, comprising: the maximum frame structure of descending sub frame quantity in frame structure saltus step candidate collection in selected current system block of information (SIB) cycle, or the frame structure of SIB broadcast.

Further, in the descending sub frame of one group of corresponding same uplink feedback of described definite described frame structure, will arrive the earliest the subframe of subscriber equipment, comprising:

Described subframe is to meet the following conditions one and the subframe of condition two:

Condition one, described subframe is subframe 0 or subframe 1 or subframe 5 or the subframe 6 of frame structure 0; Or the subframe 0 of frame structure 1 or subframe 4 or subframe 5 or subframe 9; Or the subframe 4 of frame structure 2 or subframe 9; Or the subframe 1 of frame structure 3 or subframe 7 or subframe 9; Or the subframe 0 of frame structure 4 or subframe 6; Or the subframe 9 of frame structure 5; Or the subframe 0 of frame structure 6 or subframe 1 or subframe 5 or subframe 6 or subframe 9;

Condition two, one of the DCI form in described subframe is following form: DCI1, DCI1A, DCI1B, DCI 1D, DCI 2, DCI 2A, DCI 2B, DCI 2C.

Further, in the descending sub frame of one group of corresponding same uplink feedback of determining described frame structure, will arrive the earliest after the subframe of subscriber equipment, DCI in one the subframe of satisfying condition has a plurality of, described method also comprises: according to following condition, select DCI, the DAI in the DCI of selection is used for carrying out the indication of dynamic frame structure:

According to Physical Downlink Control Channel (PDCCH) blind check formula, judge that subscriber equipment (UE) is by the DCI first detecting; Or

For dispatching the DCI of UE main carrier; Or

For dispatching the DCI of the default auxiliary carrier wave of UE.

Determine and to meet the following conditions three and the subframe of condition four:

Condition three, described subframe is the fixedly descending sub frame X of arbitrary frame structure in frame structure 1 ~ 6;

Condition four, one of the DCI form in described subframe is following form: DCI0, DCI4.

Further, described fixedly descending sub frame X is subframe 5, and the Physical Uplink Shared Channel (PUSCH) of the DAI scheduling in the DCI in described subframe is observed the sequential relationship of frame structure 6.

Further, the DAI value in the described DCI arranging in subframe, comprising: the maximum frame structure of descending sub frame quantity in described interior frame structure saltus step candidate collection of DAI value current SIB cycle of indication is set.

Further, described method also comprises: the DAI value in the DCI in the descending sub frame outside described subframe is set, and described DAI value is used for carrying out DAI configuration.

Further, the DAI value in the DCI in the described descending sub frame arranging outside described subframe, comprising:

According to current SIB in the cycle frame structure be the maximum frame structure of descending sub frame quantity in saltus step candidate collection, the DAI value in the DCI in the descending sub frame outside described subframe is set.

Further, described frame structure saltus step candidate collection comprises 4 kinds or 4 kinds of following frame structures.

Further, described frame structure saltus step candidate collection comprises 5 kinds or 5 kinds of above frame structures, and described method also comprises:

In the descending sub frame of one group of corresponding same uplink feedback of the described frame structure of adopt determining by the DAI value in the DCI arriving the earliest in 1 subframe of subscriber equipment the position in conjunction with this subframe, the maximum frame structure of descending sub frame quantity in interior frame structure saltus step candidate collection of current SIB cycle of joint instructions; Or,

In the descending sub frame of one group of corresponding same uplink feedback of the described frame structure of adopt determining by the DAI value in the DCI arriving the earliest in a plurality of subframes of subscriber equipment, the maximum frame structure of descending sub frame quantity in interior frame structure saltus step candidate collection of current SIB cycle of joint instructions.

Further, in the descending sub frame of one group of corresponding same uplink feedback of described definite described frame structure, the subframe of subscriber equipment will be arrived the earliest, comprise: the subframe 6 of frame structure 0, or the subframe 5 of frame structure 1, or the subframe 4 of frame structure 2, or the subframe 1 of frame structure 3, or the subframe 0 of frame structure 4, or the subframe 9 of frame structure 5, or the subframe 5 of frame structure 6;

Described method also comprises: next subframe in described subframe receives the response message that UE sends, and described response message is replying for the indication of dynamic frame structure.

For solving the problems of the technologies described above, the present invention also provides a kind of time division duplex (TDD) dynamic frame structure to determine method, comprising:

Receive described subframe, obtain downlink allocation index (DAI) value in the down link control information (DCI) in described subframe, described DAI value is used for carrying out the indication of dynamic frame structure;

According to described DAI value, determine the frame structure of present frame or next frame.

Further, in the descending sub frame of one group of corresponding same uplink feedback of determining described frame structure, will arrive the earliest after the subframe of subscriber equipment, the DCI in one the subframe of satisfying condition has a plurality of, described in obtain the DAI value in the DCI in described subframe, comprising:

First the DCI detecting according to Physical Downlink Control Channel (PDCCH) blind check formula judgement subscriber equipment (UE), obtains the DAI value in this DCI; Or

Be identified for dispatching the DCI of UE main carrier, obtain the DAI value in this DCI; Or

The DCI that is identified for dispatching the default auxiliary carrier wave of UE, obtains the DAI value in this DCI.

Further, described fixedly descending sub frame X is subframe 5.

Further, described method also comprises: receive the descending sub frame outside described subframe, obtain the DAI value in the DCI in the descending sub frame outside described subframe, described DAI value is used for carrying out DAI configuration.

Further, the described frame structure of determining present frame or next frame according to DAI value, comprising:

According in the descending sub frame of one of described definite described frame structure group of corresponding same uplink feedback by the DAI value in the DCI arriving the earliest in 1 subframe of subscriber equipment, directly determine the indicated frame structure of described DAI value, as the frame structure of present frame or next frame; Or,

According in the descending sub frame of one of described definite described frame structure group of corresponding same uplink feedback by the DAI value in the DCI arriving the earliest in 1 subframe of subscriber equipment the position in conjunction with this subframe, determine the indicated frame structure of described DAI value, as the frame structure of present frame or next frame; Or,

According in the descending sub frame of one of described definite described frame structure group of corresponding same uplink feedback by the DAI value in the DCI arriving the earliest in a plurality of subframes of subscriber equipment, determine the indicated frame structure of described DAI value, as the frame structure of present frame or next frame.

Subscriber equipment sends the response message for the indication of dynamic frame structure in next subframe of described subframe.

For solving the problems of the technologies described above, the present invention also provides a kind of time division duplex (TDD) dynamic frame structure inking device, comprises frame structure determination module, subframe determination module and configuration module, wherein:

Described frame structure determination module, for selected a kind of frame structure;

Described subframe determination module, for determining that the descending sub frame of one group of corresponding same uplink feedback of the determined frame structure of described frame structure determination module will arrive the subframe of subscriber equipment the earliest, described uplink feedback is used to indicate corresponding descending sub frame group data receiver correctness;

Described configuration module, for downlink allocation index (DAI) value in the down link control information (DCI) of described subframe is set, described DAI value is used for carrying out the indication of dynamic frame structure.

Further, described frame structure determination module is selected a kind of frame structure, comprising:

The maximum frame structure of descending sub frame quantity in interior frame structure saltus step candidate collection of selected current system block of information (SIB) cycle of described frame structure determination module, or the frame structure of SIB broadcast.

Further, described subframe determination module is determined in the descending sub frame of one group of described frame structure corresponding same uplink feedback and will be arrived the earliest the subframe of subscriber equipment, comprising:

Described subframe determination module select to meet the following conditions one and the subframe of condition two descending sub frame as one group of corresponding same uplink feedback of described frame structure in will arrive the earliest the subframe of subscriber equipment:

Further, described subframe determination module will arrive the earliest after the subframe of subscriber equipment in the descending sub frame of one group of corresponding same uplink feedback of determining described frame structure, DCI in one the subframe of satisfying condition has a plurality of, described subframe determination module is also for selecting DCI according to following condition, and the DAI in the DCI of selection is used for carrying out the indication of dynamic frame structure:

For dispatching the DCI of UE main carrier; Or

For dispatching the DCI of the default auxiliary carrier wave of UE.

Described subframe determination module select to meet the following conditions three and the subframe of condition four descending sub frame as one group of corresponding same uplink feedback of described frame structure in will arrive the earliest the subframe of subscriber equipment:

Further, described fixedly descending sub frame X is subframe 5.

Further, described configuration module arranges the DAI value in the DCI in subframe, comprising:

Described configuration module arranges the maximum frame structure of descending sub frame quantity in described interior frame structure saltus step candidate collection of DAI value current SIB cycle of indication.

Further, described configuration module is also for arranging the DAI value in the DCI of the descending sub frame outside described subframe, and described DAI value is used for carrying out DAI configuration.

Further, described configuration module arranges the DAI value in the DCI in the descending sub frame outside described subframe, comprising:

Described configuration module according to current SIB in the cycle frame structure be the maximum frame structure of descending sub frame quantity in saltus step candidate collection, the DAI value in the DCI in the descending sub frame outside described subframe is set.

Further, described frame structure saltus step candidate collection comprises the above frame structures of 5 kinds or 5 kinds, described configuration module also for:

Further, in the descending sub frame of one group of corresponding same uplink feedback of the described frame structure that described subframe determination module is determined, the subframe of subscriber equipment will be arrived the earliest, comprise: the subframe 6 of frame structure 0, or the subframe 5 of frame structure 1, or the subframe 4 of frame structure 2, or the subframe 1 of frame structure 3, or the subframe 0 of frame structure 4, or the subframe 9 of frame structure 5, or the subframe 5 of frame structure 6;

Described device also comprises receiver module, for next subframe in described subframe, receives the response message that UE sends, and described response message is replying for the indication of dynamic frame structure.

For solving the problems of the technologies described above, the present invention also provides a kind of time division duplex (TDD) dynamic frame structure determining device, comprises subframe determination module, receiver module and dynamic frame structure determination module, wherein:

Described subframe determination module, for selected a kind of frame structure, and will arriving the earliest the subframe of subscriber equipment in the descending sub frame of one group of corresponding same uplink feedback of definite described frame structure, described uplink feedback is used to indicate corresponding descending sub frame group data receiver correctness;

Described receiver module, for receiving described subframe, obtains downlink allocation index (DAI) value in the down link control information (DCI) in described subframe, and described DAI value is used for carrying out the indication of dynamic frame structure;

Described dynamic frame structure determination module, according to the frame structure of the definite present frame of described DAI value or next frame.

Further, described subframe determination module is selected a kind of frame structure, comprising:

The maximum frame structure of descending sub frame quantity in interior frame structure saltus step candidate collection of selected current system block of information (SIB) cycle of described subframe determination module, or the frame structure of SIB broadcast.

Further, described subframe determination module will arrive the earliest after the subframe of subscriber equipment in the descending sub frame of one group of corresponding same uplink feedback of determining described frame structure, DCI in one the subframe of satisfying condition has a plurality of, described receiver module obtains the DAI value in the DCI in described subframe, comprising:

Further, described subframe X is subframe 5.

Further, described receiver module, also for receiving the descending sub frame outside described subframe, obtains the DAI value in the DCI in the descending sub frame outside described subframe, and described DAI value is used for carrying out DAI configuration.

Further, described dynamic frame structure determination module is determined the frame structure of present frame or next frame according to DAI value, comprising:

In the descending sub frame of one group of corresponding same uplink feedback of the described frame structure that described dynamic frame structure determination module receives according to described receiver module by the DAI value in the DCI arriving the earliest in 1 subframe of subscriber equipment, directly determine the indicated frame structure of described DAI value, as the frame structure of present frame or next frame; Or

In the descending sub frame of one group of corresponding same uplink feedback of the described frame structure that described dynamic frame structure determination module receives according to described receiver module by the DAI value in the DCI arriving the earliest in 1 subframe of subscriber equipment the position in conjunction with this subframe, determine the indicated frame structure of described DAI value, as the frame structure of present frame or next frame; Or,

In the descending sub frame of one group of corresponding same uplink feedback of the described frame structure that described dynamic frame structure determination module receives according to described receiver module by the DAI value in the DCI arriving the earliest in a plurality of subframes of subscriber equipment, determine the indicated frame structure of described DAI value, as the frame structure of present frame or next frame.

Described device also comprises sending module, for next subframe in described subframe, sends the response message for the indication of dynamic frame structure.

The method and the device that adopt the application to provide, utilize the DAI bit dynamic-configuration frame structure in the DCI in specific sub-frame, can not bring any restriction to scheduling, and the robustness of system is provided, be particularly useful in LTE-advance (3GPP Release 12) TDD communication system.

Accompanying drawing explanation

Fig. 1 is embodiment 1 flow chart;

Fig. 2 is embodiment 1 dynamic frame structure inking device structural representation;

Fig. 3 is embodiment 2 flow charts;

Fig. 4 is embodiment 2 dynamic frame structure determining device structural representations.

Embodiment

For making the object, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing, embodiments of the invention are elaborated.It should be noted that, in the situation that not conflicting, the embodiment in the application and the feature in embodiment be combination in any mutually.

Embodiment 1

The present embodiment is introduced TDD dynamic frame structure configuration method, and the present embodiment method, mainly for base station side, as shown in Figure 1, comprises the following steps:

Step 101, selected a kind of frame structure, and will arrive the earliest the subframe of subscriber equipment in the descending sub frame of one group of corresponding same uplink feedback of definite described frame structure, described uplink feedback is used to indicate corresponding descending sub frame group data receiver correctness;

One group of descending sub frame described herein is descending sub frame group, descending sub frame group is: according to the downlink physical shared channel (PDSCH) of existing definition (3GPP Release8) and uplink feedback (ACK or NACK) sequential relationship, be mapped to one or more descending sub frame of a uplink feedback.

In a preferred embodiment, the mode of selected a kind of frame structure comprises: the maximum frame structure of descending sub frame quantity in frame structure saltus step candidate collection in selected current system block of information (SIB) cycle, or the frame structure (the descending sub frame quantity in frame structure saltus step candidate collection can adopt while being no more than 4) of selected SIB broadcast.

The method of selected subframe can have multiple:

method one, this subframe is to meet the following conditions 1 and the subframe of condition 2:

Condition 1, subframe as shown in table 2, comprising: described subframe is subframe 0 or subframe 1 or subframe 5 or the subframe 6 of frame structure 0; Or the subframe 0 of frame structure 1 or subframe 4 or subframe 5 or subframe 9; Or the subframe 4 of frame structure 2 or subframe 9; Or the subframe 1 of frame structure 3 or subframe 7 or subframe 9; Or the subframe 0 of frame structure 4 or subframe 6; Or the subframe 9 of frame structure 5; Or the subframe 0 of frame structure 6 or subframe 1 or subframe 5 or subframe 6 or subframe 9;

Condition 2, one of the DCI form in described subframe is following form: DCI1, DCI1A, DCI1B, DCI1D, DCI2, DCI2A, DCI2B, DCI2C.

Determine satisfy condition 1 and the subframe of condition 2 after, DCI if satisfied condition in 1 subframe has, and a plurality of (described in this, frame structure has a plurality of sub-frame of uplink can send uplink feedback, for example, in carrier aggregation scene), need to select one for carrying out the DCI of dynamic frame structure indication according to one of following condition:

Condition 1.1 judges that according to Physical Downlink Control Channel (PDCCH) blind check formula subscriber equipment (UE) is by the DCI first detecting;

Condition 1.2 is for dispatching the DCI of UE main carrier;

Condition 1.3 is for dispatching the DCI of the default auxiliary carrier wave of UE.

Or may occur that DCI in subframe is not used this method to carry out the indication of dynamic frame structure in having a plurality of scenes.

Table 2 redundancy DAI information subframe

method two, this subframe is to meet the following conditions 3 and the subframe of condition 4:

Condition 3, described subframe is the fixedly descending sub frame X of arbitrary frame structure in frame structure 1 ~ 6;

Condition 4, one of the DCI form in described subframe is following form: DCI0, DCI4.

A kind of preferred implementation be set this fixedly descending sub frame X be subframe 5, the Physical Uplink Shared Channel (PUSCH) of the DAI scheduling in the DCI in this subframe is observed the sequential relationship of frame structure 6.

Preferably the reason of subframe 5 is: in existing frame structure, (the not ULI of considered frame structure 0) only has frame structure 6 to send DAI in subframe 5, and it is for a PDSCH, if UE detects DCI 0 or DCI 4 in subframe 5 so, that just means that this DAI is redundancy, that is to say for other frame structures it is not need this DAI's.In addition, if system sends out a DCI 0 or DCI 4 for UE in subframe 5, the follow-up parameter of wanting again to upgrade DCI 0 or DCI 4, can send again DCI 0 or DCI 4 in follow-up for example subframe 6 or subframe 8, DCI 0 or DCI 4 that at this time subframe 5 sends are above redundancy DCI, are only used to the indication of dynamic frame structure.If or the system that can be set to sends out a DCI 0 or DCI 4 for UE in subframe 5, just mean that system wishes to change the frame structure of subsequent frame, before not receiving that UE confirms, the system not arbitrary subframe in subframe 6 ~ 9 is carried out the setting of DCI 0 or DCI 4 to this UE, to avoid occurring obscuring of UL subframe that the subframe of this DCI 0 or DCI 4 scheduling is pointed.

method three, this subframe is 5 the subframe of meeting the following conditions:

Condition 5, subframe as shown in table 3, comprising: described subframe is the subframe 6 of frame structure 0, or the subframe 5 of frame structure 1, or the subframe 4 of frame structure 2, or the subframe 1 of frame structure 3, or the subframe 0 of frame structure 4, or the subframe 9 of frame structure 5, or the subframe 5 of frame structure 6;

If adopt this method to determine subframe, convenient next subframe in this subframe receives the response message that UE sends, and this response message is replying for the indication of dynamic frame structure.

Employing method three can be avoided because the UE frame structure that correctly demodulation DCI produces is obscured (adopt SIB configuration frame structure) by mistake, because the uplink feedback of 5 the subframe of satisfying condition can send to eNB the earliest.

Table 3 is supported the subframe of rapid feedback

Preferably, R12UE sends ACK or the NACK confirmation for the indication of dynamic frame structure according to second subframe that is defined in of R8, this ACK or NACK feedback can only be indicated for DAI dynamic frame structure, that is to say, the ACK of the PDSCH distributing for this DCI of eIMTA definition or NACK feedback can occur in other sub-frame of uplink.

For example, SIB broadcast frame structure is 1, and present frame UE1 is assigned with descending sub frame 5 and subframe 9.Base station issues the indication of dynamic frame structure (subframe that comprises DCI and DAI) and PDSCH1 in subframe 5, and wherein DCI and DAI correctly receive, and PDSCH 1 is wrong, receive.Base station issues DCI and PDSCH 2 in subframe 9, all correctly receives.UE is frame structure 2 according to the DAI configuration next frame in subframe 5.The subframe 2 of next frame, the ACK of the dynamic frame structure indication that UE issues for subframe 5 according to R8 criterion feedback, subframe 7 is the NACK for the PDSCH of subframe 5 and subframe 9 according to R12 feedback.

Step 102, arranges downlink allocation index (DAI) value in the down link control information (DCI) in described subframe, and this DAI value is used for carrying out the indication of dynamic frame structure.

In a preferred embodiment, the DAI value in the DCI in subframe can be set in the following ways: the maximum frame structure of descending sub frame quantity in interior frame structure saltus step candidate collection of this DAI value current SIB cycle of indication is set.The indicated frame structure of this DAI value is the frame structure of UE present frame or next frame.For example, current SIB configuration frame structure 0, candidate's hop-set is combined into [0 12 6], system can arrange according to frame structure 2 position of the subframe of DAI value and this DAI, can avoid like this obscuring of DAI value, and solve the correctly problem of demodulation of the UE subsequent frame structure that correctly demodulation DCI causes.But uplink feedback must not followed this frame structure.

A kind of reasonable situation is that frame structure saltus step candidate collection comprises 4 kinds or 4 kinds of following frame structures, adopts the DAI value of 2bit just can indicate.Simultaneously can meet some rational basic assumptions, for example " candidate's saltus step subframe switching point quantity remains unchanged " (Candidate Set be [0 12 6], [3,4,5]) or " descending sub frame that SIB defines can not saltus step be sub-frame of uplink ".

But if frame structure saltus step candidate collection comprises the above frame structures of 5 kinds or 5 kinds, one of can be in the following ways the joint instructions of achieve frame structure:

Mode 1, in the descending sub frame of one group of corresponding same uplink feedback of this frame structure of adopt determining by the DAI value in the DCI arriving the earliest in 1 subframe of subscriber equipment the position in conjunction with this subframe, the maximum frame structure of descending sub frame quantity in interior frame structure saltus step candidate collection of current SIB cycle of joint instructions;

With SIB configuration frame structure 0, frame structure saltus step candidate collection comprises that frame structure 1 ~ 6 is for example, can define 2 saltus step subsets and: subset 1:{0 12 6}, subset 2:{3 4 5}, each subclass is no more than 4 kinds of frame structures.Being chosen as of DAI value and subframe is as shown in table 4.

Table 4DAI value and subframe integrated indication

According to subframe and the DAI value selected, carry out a kind of frame structure in unique identification frame structure saltus step candidate collection.

Mode 2, in the descending sub frame of one group of corresponding same uplink feedback of this frame structure of adopt determining by the DAI value in the DCI arriving the earliest in a plurality of subframes of subscriber equipment, the maximum frame structure of descending sub frame quantity in interior frame structure saltus step candidate collection of current SIB cycle of joint instructions.

For example selected 2 subframes, carry out a kind of frame structure in unique identification frame structure saltus step candidate collection by 4bitDAI joint instructions.Adopt this kind of mode need to send DAI twice.For frame structure 5, need 20ms could travel through 7 kinds of frame structures, as shown in table 5.

Two DAI joint instructions of table 5

If according to table 3, R12UE can feed back according to the ACK of R8 definition or NACK feedback sequential completely, yet in order to support the scheme of 7 kinds of frame structures of multi-subframe integrated configuration, preferably adopt frame structure 5, meet ACK/NACK rapid feedback simultaneously and combine the requirement that configures 7 kinds of candidate frame structures.

In another preferred embodiment, except arranging the DAI value in above-mentioned subframe, the DAI value in the DCI in the descending sub frame outside this subframe can also be set, those DAI values are used for carrying out DAI configuration.Specifically can according to current SIB in the cycle frame structure be the maximum frame structure of descending sub frame quantity in saltus step candidate collection, suppose that in the current SIB cycle, frame structure is the maximum frame structure of descending sub frame quantity in saltus step candidate collection, the DAI value in the DCI in the descending sub frame outside described subframe is set.

Realize the dynamic frame structure inking device of said method, as shown in Figure 2, comprise frame structure determination module 201, subframe determination module 202 and configuration module 203, wherein:

Described frame structure determination module 201, for selected a kind of frame structure;

Described subframe determination module 202, for determining that the descending sub frame of one group of corresponding same uplink feedback of the determined frame structure of described frame structure determination module will arrive the subframe of subscriber equipment the earliest, described uplink feedback is used to indicate corresponding descending sub frame group data receiver correctness;

Described configuration module 203, for the DAI value in the DCI of described subframe is set, described DAI value is used for carrying out the indication of dynamic frame structure.

This frame structure determination module 201 can be selected the maximum frame structure of descending sub frame quantity in interior frame structure saltus step candidate collection of current SIB cycle, or also can select the frame structure of SIB broadcast.

This subframe determination module 202 can adopt said method one, method two or method three to determine in the descending sub frame of one group of corresponding same uplink feedback of these frame structures and will arrive the earliest the subframe of subscriber equipment, wherein:

When subframe determination module 202 employing methods one are determined after subframe, a plurality of if the DCI in 1 the subframe of satisfying condition has, this subframe determination module 202 is also for selecting DCI according to above-mentioned condition 1.1 or 1.2 or 1.3.

When subframe determination module 202 employing methods three are determined subframe, described device also comprises receiver module 204, for next subframe in described subframe, receives the response message for the indication of dynamic frame structure that UE sends.

In a preferred embodiment, this configuration module 203 arranges the value that the DAI value in the DCI in subframe is the frame structure that in frame structure saltus step candidate collection in the current SIB cycle of indication, descending sub frame quantity is maximum.

In a preferred embodiment, this configuration module 203 is also for arranging the DAI value in the DCI of the descending sub frame outside described subframe, and described DAI value is used for carrying out DAI configuration.This configuration module 203 can according to current SIB in the cycle frame structure be the maximum frame structure of descending sub frame quantity in saltus step candidate collection, the DAI value in the DCI in the descending sub frame outside described subframe is set.

When frame structure saltus step candidate collection comprises more than 5 kinds or 5 kinds frame structure, this configuration module 203 also for:

Embodiment 2

The present embodiment is introduced TDD dynamic frame structure and is determined method, and the present embodiment method, mainly for UE side, as shown in Figure 3, comprises the following steps:

Step 301, selected a kind of frame structure, and will arrive the earliest the subframe of subscriber equipment in the descending sub frame of one group of corresponding same uplink feedback of definite described frame structure, described uplink feedback is used to indicate corresponding descending sub frame group data receiver correctness;

In the method for UE side selected frame structure and selected this frame structure, the method for subframe is referring to base station side method in embodiment 1, wherein:

When employing method one is determined after frame structure, if the DCI in 1 the subframe of satisfying condition has a plurality of (described in this, frame structure has a plurality of sub-frame of uplink can send uplink feedback), according to one of following condition, obtain the DAI value in the DCI in described subframe:

First the DCI detecting according to PDCCH blind check formula judgement UE, obtains the DAI value in this DCI; Or

If the condition in employing method three 5 is determined subframe, subscriber equipment sends the response message for the indication of dynamic frame structure by next subframe in this subframe.

Step 302, receives described subframe, obtains the DAI value in the DCI in described subframe, and described DAI value is used for carrying out the indication of dynamic frame structure;

In a preferred embodiment, except receiving above-mentioned subframe, also receive the descending sub frame outside this subframe, obtain the DAI value in the DCI in the descending sub frame outside this subframe, this DAI value is used for carrying out DAI configuration.

Step 203, according to the frame structure of the definite present frame of this DAI value or next frame.

The frame structure of one of specifically can be in the following ways determining present frame or next frame:

Mode 1, the situation that comprises 4 kinds or 4 kinds following frame structures mainly for frame structure saltus step candidate collection, according in the descending sub frame of one of described definite described frame structure group of corresponding same uplink feedback by the DAI value in the DCI arriving the earliest in 1 subframe of subscriber equipment, directly determine the indicated frame structure of described DAI value, as the frame structure of present frame or next frame;

Mode 2, the situation that comprises 5 kinds or 5 kinds above frame structures mainly for frame structure saltus step candidate collection, according in the descending sub frame of one of described definite described frame structure group of corresponding same uplink feedback by the DAI value in the DCI arriving the earliest in 1 subframe of subscriber equipment the position in conjunction with this subframe, determine the indicated frame structure of described DAI value, as the frame structure of present frame or next frame;

Mode 3, the situation that comprises 5 kinds or 5 kinds above frame structures mainly for frame structure saltus step candidate collection, according in the descending sub frame of one of described definite described frame structure group of corresponding same uplink feedback by the DAI value in the DCI arriving the earliest in a plurality of subframes of subscriber equipment, determine the indicated frame structure of described DAI value, as the frame structure of present frame or next frame.

Realize the dynamic frame structure determining device of said method, as shown in Figure 4, comprise subframe determination module 401, receiver module 402 and dynamic frame structure determination module 403, wherein:

This subframe determination module 401, for selected a kind of frame structure, and will arriving the earliest the subframe of subscriber equipment in the descending sub frame of one group of corresponding same uplink feedback of definite described frame structure, described uplink feedback is used to indicate corresponding descending sub frame group data receiver correctness;

This receiver module 402, for receiving described subframe, obtains the DAI value in the DCI in described subframe, and described DAI value is used for carrying out the indication of dynamic frame structure;

This dynamic frame structure determination module 403, according to the frame structure of the definite present frame of described DAI value or next frame.

This subframe determination module 401 can be selected the maximum frame structure of descending sub frame quantity in interior frame structure saltus step candidate collection of current SIB cycle, or the frame structure of selected SIB broadcast.

In the descending sub frame of the subframe that this subframe determination module 401 can select to meet condition 1 in embodiment 1 method one and condition 2 as one group of corresponding same uplink feedback of described frame structure, the subframe of subscriber equipment will be arrived the earliest; Now, this subframe determination module 401 determines after subframe, and a plurality of if the DCI in 1 the subframe of satisfying condition has, the DCI that first receiver module 402 detects according to PDCCH blind check formula judgement UE, obtains the DAI value in this DCI; Or be identified for dispatching the DCI of UE main carrier, obtain the DAI value in this DCI; Or the DCI that is identified for dispatching the default auxiliary carrier wave of UE, obtains the DAI value in this DCI.

In the descending sub frame of the subframe that this subframe determination module 401 can also select to meet condition 3 in embodiment 1 method two and condition 4 as one group of corresponding same uplink feedback of described frame structure, the subframe of subscriber equipment will be arrived the earliest.

In the descending sub frame of the subframe that this subframe determination module 401 can also select to meet the condition 5 in embodiment 1 method three as one group of corresponding same uplink feedback of described frame structure, the subframe of subscriber equipment will be arrived the earliest, now, described device also comprises sending module, and it sends the response message for the indication of dynamic frame structure for next subframe in described subframe.

In a preferred embodiment, this receiver module 402, also for receiving the descending sub frame outside described subframe, obtains the DAI value in the DCI in the descending sub frame outside described subframe, and this DAI value is used for carrying out DAI configuration.

This dynamic frame structure determination module 403 can adopt the present embodiment aforesaid way 1 or mode 2 or mode 3 to determine the frame structure of present frame or next frame.

One of ordinary skill in the art will appreciate that all or part of step in said method can come instruction related hardware to complete by program, described program can be stored in computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuits.Correspondingly, each the module/unit in above-described embodiment can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.

Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims

1. time division duplex (TDD) dynamic frame structure configuration method, comprising:

2. the method for claim 1, is characterized in that:

Selected a kind of frame structure, comprising: the maximum frame structure of descending sub frame quantity in frame structure saltus step candidate collection in selected current system block of information (SIB) cycle, or the frame structure of SIB broadcast.

3. the method for claim 1, is characterized in that:

In the descending sub frame of one group of corresponding same uplink feedback of described definite described frame structure, will arrive the earliest the subframe of subscriber equipment, comprising:

4. method as claimed in claim 3, is characterized in that:

In the descending sub frame of one group of corresponding same uplink feedback of determining described frame structure, will arrive the earliest after the subframe of subscriber equipment, DCI in one the subframe of satisfying condition has a plurality of, described method also comprises: according to following condition, select DCI, the DAI in the DCI of selection is used for carrying out the indication of dynamic frame structure:

For dispatching the DCI of UE main carrier; Or

For dispatching the DCI of the default auxiliary carrier wave of UE.

5. the method for claim 1, is characterized in that:

6. method as claimed in claim 5, is characterized in that:

Described fixedly descending sub frame X is subframe 5, and the Physical Uplink Shared Channel (PUSCH) of the DAI scheduling in the DCI in described subframe is observed the sequential relationship of frame structure 6.

7. the method for claim 1, is characterized in that:

DAI value in the described DCI arranging in subframe, comprising: the maximum frame structure of descending sub frame quantity in described interior frame structure saltus step candidate collection of DAI value current SIB cycle of indication is set.

8. the method for claim 1, is characterized in that:

Described method also comprises: the DAI value in the DCI in the descending sub frame outside described subframe is set, and described DAI value is used for carrying out DAI configuration.

9. method as claimed in claim 8, is characterized in that:

DAI value in DCI in the described descending sub frame arranging outside described subframe, comprising:

10. method as claimed in claim 7, is characterized in that:

Described frame structure saltus step candidate collection comprises 4 kinds or 4 kinds of following frame structures.

11. methods as claimed in claim 7, is characterized in that:

Described frame structure saltus step candidate collection comprises 5 kinds or 5 kinds of above frame structures, and described method also comprises:

12. the method for claim 1, is characterized in that:

In the descending sub frame of one group of corresponding same uplink feedback of described definite described frame structure, the subframe of subscriber equipment will be arrived the earliest, comprise: the subframe 6 of frame structure 0, or the subframe 5 of frame structure 1, or the subframe 4 of frame structure 2, or the subframe 1 of frame structure 3, or the subframe 0 of frame structure 4, or the subframe 9 of frame structure 5, or the subframe 5 of frame structure 6;

13. 1 kinds of time division duplexs (TDD) dynamic frame structure is determined method, comprising:

14. methods as claimed in claim 13, is characterized in that:

15. methods as claimed in claim 13, is characterized in that:

16. methods as claimed in claim 15, is characterized in that:

In the descending sub frame of one group of corresponding same uplink feedback of determining described frame structure, will arrive the earliest after the subframe of subscriber equipment, the DCI in one the subframe of satisfying condition has a plurality of, described in obtain the DAI value in the DCI in described subframe, comprising:

17. methods as claimed in claim 13, is characterized in that:

18. methods as claimed in claim 17, is characterized in that:

Described fixedly descending sub frame X is subframe 5.

19. methods as claimed in claim 13, is characterized in that:

Described method also comprises: receive the descending sub frame outside described subframe, obtain the DAI value in the DCI in the descending sub frame outside described subframe, described DAI value is used for carrying out DAI configuration.

20. methods as claimed in claim 13, is characterized in that:

The described frame structure of determining present frame or next frame according to DAI value, comprising:

21. methods as claimed in claim 13, is characterized in that:

22. 1 kinds of time division duplexs (TDD) dynamic frame structure inking device, comprises frame structure determination module, subframe determination module and configuration module, wherein:

23. devices as claimed in claim 22, is characterized in that:

Described frame structure determination module is selected a kind of frame structure, comprising:

24. devices as claimed in claim 22, is characterized in that:

Described subframe determination module is determined in the descending sub frame of one group of described frame structure corresponding same uplink feedback and will be arrived the earliest the subframe of subscriber equipment, comprising:

25. devices as claimed in claim 24, is characterized in that:

Described subframe determination module will arrive the earliest after the subframe of subscriber equipment in the descending sub frame of one group of corresponding same uplink feedback of determining described frame structure, DCI in one the subframe of satisfying condition has a plurality of, described subframe determination module is also for selecting DCI according to following condition, and the DAI in the DCI of selection is used for carrying out the indication of dynamic frame structure:

For dispatching the DCI of UE main carrier; Or

For dispatching the DCI of the default auxiliary carrier wave of UE.

26. devices as claimed in claim 22, is characterized in that:

27. devices as claimed in claim 26, is characterized in that:

Described fixedly descending sub frame X is subframe 5.

28. devices as claimed in claim 22, is characterized in that:

Described configuration module arranges the DAI value in the DCI in subframe, comprising:

29. devices as claimed in claim 22, is characterized in that:

Described configuration module is also for arranging the DAI value in the DCI of the descending sub frame outside described subframe, and described DAI value is used for carrying out DAI configuration.

30. devices as claimed in claim 29, is characterized in that:

Described configuration module arranges the DAI value in the DCI in the descending sub frame outside described subframe, comprising:

31. devices as claimed in claim 28, is characterized in that:

32. devices as claimed in claim 28, is characterized in that:

Described frame structure saltus step candidate collection comprises the above frame structures of 5 kinds or 5 kinds, described configuration module also for:

33. devices as claimed in claim 22, is characterized in that:

In the descending sub frame of one group of corresponding same uplink feedback of the described frame structure that described subframe determination module is determined, the subframe of subscriber equipment will be arrived the earliest, comprise: the subframe 6 of frame structure 0, or the subframe 5 of frame structure 1, or the subframe 4 of frame structure 2, or the subframe 1 of frame structure 3, or the subframe 0 of frame structure 4, or the subframe 9 of frame structure 5, or the subframe 5 of frame structure 6;

34. 1 kinds of time division duplexs (TDD) dynamic frame structure determining device, comprises subframe determination module, receiver module and dynamic frame structure determination module, wherein:

35. devices as claimed in claim 34, is characterized in that:

Described subframe determination module is selected a kind of frame structure, comprising:

36. devices as claimed in claim 34, is characterized in that:

37. devices as claimed in claim 36, is characterized in that:

Described subframe determination module will arrive the earliest after the subframe of subscriber equipment in the descending sub frame of one group of corresponding same uplink feedback of determining described frame structure, DCI in one the subframe of satisfying condition has a plurality of, described receiver module obtains the DAI value in the DCI in described subframe, comprising:

38. devices as claimed in claim 34, is characterized in that:

39. devices as claimed in claim 38, is characterized in that:

Described subframe X is subframe 5.

40. devices as claimed in claim 34, is characterized in that:

Described receiver module, also for receiving the descending sub frame outside described subframe, obtains the DAI value in the DCI in the descending sub frame outside described subframe, and described DAI value is used for carrying out DAI configuration.

41. devices as claimed in claim 34, is characterized in that:

Described dynamic frame structure determination module is determined the frame structure of present frame or next frame according to DAI value, comprising:

42. devices as claimed in claim 34, is characterized in that: