CN104113397A - Non-periodic CSI feedback method in flexible TDD reconfiguration system and equipment thereof - Google Patents
Non-periodic CSI feedback method in flexible TDD reconfiguration system and equipment thereof Download PDFInfo
- Publication number
- CN104113397A CN104113397A CN201310488010.XA CN201310488010A CN104113397A CN 104113397 A CN104113397 A CN 104113397A CN 201310488010 A CN201310488010 A CN 201310488010A CN 104113397 A CN104113397 A CN 104113397A
- Authority
- CN
- China
- Prior art keywords
- csi
- aperiodic
- subframe
- feedback
- request
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
Provided is a non-periodic CSI feedback method in a flexible TDD reconfiguration community. The method comprises the steps that: step A: a UE receives signaling information transmitted by an eNB so that the position of a corresponding subframe of a CH and a CL is acquired, wherein the CH and the CL are corresponding to different subframe sets; step B: the UE detects uplink DCI information carrying a non-periodic CSI request at a CSI request subframe; and step C: the UE feeds back a non-periodic CSI aiming at the corresponding CSI subframe set to the eNB at a corresponding uplink subframe. Another aspect of the embodiment of the invention provides a terminal. According to the aforementioned scheme, the CSI subframe sets are defined via an implicit or explicit mode. After the terminal acquires indication information of the CSI subframe sets in the non-periodic CSI feedback process, non-periodic CSI feedback aiming at the CH and the CL in the flexible TDD reconfiguration community can be realized so that system performance is enhanced.
Description
Technical field
The present invention relates to the CSI(Channel State Information in communication system, channel condition information) feedback technique, particularly in flexible TDD reconfiguration system aperiodic CSI feedback technique.
Background technology
Long Term Evolution (LTE) system of 3GPP standardization body is supported Frequency Division Duplexing (FDD) (FDD) and two kinds of duplex modes of time division duplex (TDD).In LTE TDD, the length of each radio frames is 10ms, and it is divided into the field that two length are 5ms, concrete LTE tdd frame structure as shown in Figure 1.And each field comprises time slot and 3 special domain that 8 length are 0.5ms, these 3 special domain comprise descending pilot frequency time slot (DwPTS), protection interval (GP) and uplink pilot time slot (UpPTS), the length of these 3 special domain be 1ms.In addition, each subframe of the LTE tdd frame structure shown in Fig. 1 is made up of two continuous time slots, and k subframe comprises time slot 2k and time slot 2k+1.
LTE TDD supports 7 kinds of upstream and downstream configurations, and as shown in table 1, wherein, the D in table 1 represents descending sub frame, and U represents sub-frame of uplink, and S represents the special subframe that comprises above-mentioned 3 special domain.
In the regulation of current LTE agreement, the TDD uplink-downlink configuration of community is semi-static, and eNB can frequently not change the TDD uplink-downlink configuration in community, and at least, in a data transmission procedure, the TDD uplink-downlink configuration in community can not change.
Table 1
In existing LTE/LTE-A system, UE can be according to the configuration of eNB, and cycle or aperiodic feedback CSI information, so that eNB obtains the down channel situation of UE.For CSI feedback aperiodic, being by being included in up DCI(Downlink Control Information) CSI request (CSI Request) bit in form triggers.In the LTE-A system of 3GPP standard Rel.11 definition, 10 kinds of TM(Transmission Mode are defined, transmission mode), for transmission mode TM1～9, there is not the concept of CSI process (CSI Process), or think that CSI process number is 1, for transmission mode TM10, eNB can configure multiple CSI processes to UE by high-level signaling, and each CSI process can be divided at most two CSI subframe collection (CSI Subframe Set).In one or more CSI process that aperiodic, CSI feedback triggered, when to a CSI process configuration when 2 CSI subframe collection, one time aperiodic CSI feedback be to trigger one of them CSI subframe collection C
cSI, ithe CSI feedback of (i=0 or 1).Specifically, UE is at C
cSI, iin determine CSI reference resources (CSI Reference Resource) in certain descending sub frame, and further carry out CSI measurement; Wherein C
cSI, idetermined i.e. C by the descending sub frame that triggers the CSI request place that above-mentioned aperiodic, CSI fed back
cSI, ifor the CSI subframe collection of the up DCI place subframe that comprises CSI request.Visible, in 3GPP standard Rel.11, aperiodic, CSI fed back corresponding subframe collection, was implicit instruction of descending sub frame by the up DCI place that comprises CSI request aperiodic.
In order to meet the growing business demand of mobile subscriber, in LTE-A, TDD reconfiguration technology has obtained increasing concern flexibly.Flexibly TDD reconfiguration technology can make the ratio of current sub-frame of uplink and descending sub frame more meet the ratio of current upstream traffic and downlink traffic, the throughput that is conducive to improve user's up-downgoing peak rate and improves system.
The system of reshuffling for flexible TDD, the TDD UL/DL uplink-downlink configuration of community is dynamic change along with the up-downgoing traffic carrying capacity in current area, and this just means that some subframe can dynamically change up-downlink direction, and this part subframe becomes flexible sub-frame.In addition, the wireless environment that flexibly TDD reshuffles place, community can be subject to the impact of adjacent frequency around or co-frequency cell, and these adjacent cells are also operated in tdd mode conventionally, thereby cause flexible TDD to reshuffle part descending sub frame in community, to be subject to the interference of dominant interference adjacent cell stronger, such as in the time that dominant interference adjacent cell is also descending sub frame in these subframe position; The interference that other a part of descending sub frame (being generally flexible sub-frame) is subject to dominant interference adjacent cell a little less than, such as in the time that dominant interference community is sub-frame of uplink in these subframe position.Reshuffle in community at flexible TDD like this, the descending sub frame (comprising flexible sub-frame) of each radio frames can be divided into two set C
hand C
l, wherein, these two set can only comprise an element.
For ease of explanation, to be subject to descending sub frame set that stronger dominant interference adjacent cell disturbs as C
hbe C with being subject to the descending sub frame set that weak dominant interference adjacent cell disturbs
lbe illustrated.For example, in order to give full play to flexible TDD reconfiguration technology a little, be necessary to feed back respectively the CSI of above-mentioned two set.
But in flexible TDD reconfiguration system, in order to reduce the complexity of uplink scheduling sequential, system sometimes can be by not belonging to C
lsubframe send up DCI form because these subframes are generally flexible sub-frame, if send up DCI in these subframes, be transformed into after sub-frame of uplink in above-mentioned flexible sub-frame, need to readjust uplink scheduling sequential; Even and if allow by belonging to C
lsubframe send up DCI, the sub-frame of uplink corresponding with these subframes can be transformed to descending sub frame sometimes, such as belonging to C as subframe #4 and subframe #9
land subframe #8 and subframe #3 are while being changed to descending sub frame flexibly, at this moment for C
lcSI aperiodic cannot be fed back.This just means if still continue to use the method for 3GPP standard Rel.11 definition,, by subframe collection corresponding to descending sub frame implicit instruction CSI aperiodic by the up DCI place that comprises CSI request aperiodic, can cause for C
lcSI feedback cannot be triggered.
From above-mentioned analysis, reshuffle in community at flexible TDD, if realize for C
hand C
lcSI feedback aperiodic, CSI aperiodic facing for flexible descending sub frame is fed back the problem that cannot be triggered by the method defining in 3GPPP standard Rel.11, and this problem does not still have corresponding solution at present.
Summary of the invention
The invention provides flexible TDD in reshuffling aperiodic CSI feedback method, can effectively realize for flexible TDD and reshuffle C in community
hand C
lcSI aperiodic feed back.
For achieving the above object, the embodiment of the present invention has proposed on the one hand a kind of flexible TDD and has reshuffled the method that in community, aperiodic, CSI fed back, and comprising:
Steps A: UE receives the signaling information that eNB sends, and obtains C
hand C
lcorresponding subframe position; Wherein, C
hand C
lcorresponding different subframe set;
Step B: described UE detects the up DCI information of carrying CSI request aperiodic in CSI request subframe;
Step C: described UE feeds back CSI aperiodic for the set of corresponding CSI subframe to described eNB on corresponding sub-frame of uplink.
The embodiment of the present invention has proposed a kind of terminal on the other hand, and comprise receiver module, detect judge module and sending module,
Described receiver module, the signaling information sending for receiving eNB, obtains C
hand C
lcorresponding subframe position; Wherein, C
hand C
lcorresponding different subframe set;
Described detection judge module, for detecting the up DCI information of carrying CSI request aperiodic in CSI request subframe;
Described sending module, for feeding back CSI aperiodic for the set of corresponding CSI subframe to described eNB on corresponding sub-frame of uplink.
According to such scheme disclosed by the invention, define CSI subframe set identification by implicit or explicit mode, after terminal is obtained the indication information of CSI subframe set in CSI feedback procedure aperiodic, can realize flexible TDD and reshuffle in community for C
hand C
laperiodic CSI feedback triggering, improve systematic function.In addition, the such scheme that the present invention proposes, changes very littlely to existing equipment or system, can not affect the compatibility of equipment, and it is realized not only simply but also efficient.
Brief description of the drawings
Fig. 1 is the frame structure schematic diagram of LTE TDD;
Fig. 2 is that the flexible TDD of the embodiment of the present invention reshuffles the method flow diagram that in community, aperiodic, CSI fed back;
Fig. 3 is application scenarios one performing step flow chart of the present invention;
Fig. 4 is application scenarios two performing step flow charts of the present invention;
Fig. 5 is application scenarios three performing step flow charts of the present invention;
Fig. 6 is application scenarios four performing step flow charts of the present invention;
Fig. 7 is the structural representation of embodiment of the present invention terminal equipment.
Embodiment
Describe embodiments of the invention below in detail, the example of embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar operations from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
Unless those skilled in the art of the present technique are appreciated that specially statement, singulative used herein " ", " one ", " described " and " being somebody's turn to do " also can comprise plural form.Should be further understood that, the wording using in specification of the present invention " comprises " and refers to and have feature, integer, step, operation, element and/or assembly, exists or adds one or more other features, integer, step, operation, element, assembly and/or their group but do not get rid of.Should be appreciated that, when we claim element to be " connected " or " coupling " when another element, it can be directly connected or coupled to other elements, or also can have intermediary element.In addition, " connection " used herein or " coupling " can comprise wireless connections or couple.Wording "and/or" used herein comprises arbitrary unit of listing item and all combinations that one or more is associated.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have with the present invention under the identical meaning of the general understanding of those of ordinary skill in field.Should also be understood that such as those terms that define in general dictionary and should be understood to have the meaning consistent with meaning in the context of prior art, unless and definition as here, can not explain by idealized or too formal implication.
Those skilled in the art of the present technique are appreciated that, here " terminal ", " terminal equipment " that used had both comprised the equipment only possessing without the wireless signal receiver of emissivities, comprised again having on bidirectional communication link, carrying out the reception of two-way communication and the equipment of transmitting hardware.This equipment can comprise: tool is with or without honeycomb or other communication equipments of multi-line display; Can combine voice and the PCS Personal Communications System (PCS) of data processing, fax and/or its communication ability; Can comprise the PDA(Personal Digital Assistant) of radio frequency receiver and beep-pager, the Internet/intranet access, web browser, notepad, calendar and/or global positioning system (GPS) receiver; And/or the routine that comprises radio frequency receiver is on knee and/or palmtop computer or other equipment.
In mobile communication system, for example, reshuffle in community at flexible TDD, because C
hand C
lbe subject to having larger difference from the interference of adjacent cell, thus need to feed back respectively CSI aperiodic for above-mentioned two set, and aperiodic CSI for the indicating means of CSI subframe collection, need, according to the feature of TDD reconfiguration system flexibly, re-start design.
For ease of explanation, the descending sub frame set C below disturbing to be subject to stronger dominant interference adjacent cell
hwith the descending sub frame set C that is subject to weak dominant interference adjacent cell interference
lfor example describes.Should be appreciated that C
hand C
lbe not limited to the above-mentioned division principle of mentioning, can suitably divide into groups as required.For example: C
hfor subframe set flexibly, C
lfor fixing descending sub frame set; Or, C
hfor strongly disturbing descending or flexible sub-frame set, C
lfor weak jamming or fixing descending sub frame set.
Particularly, basic thought of the present invention is, by definition C
hand C
lwith the DCI place descending sub frame that comprises CSI request aperiodic or carry the corresponding relation of the PUSCH place sub-frame of uplink of CSI aperiodic, or by the explicit instruction of bit in physical layer signaling, realize for C
hand C
laperiodic CSI feedback triggering.
In order to realize the present invention's object, as described in Figure 2, for the flexible TDD of the embodiment of the present invention reshuffles the method flow diagram of CSI feedback aperiodic in community, comprise that steps A is to step C:
Steps A: UE receives the signaling information that eNB sends, and obtains C
hand C
lcorresponding subframe position; Wherein, C
hand C
lcorresponding different subframe set;
Step B:UE detects the up DCI information of carrying CSI request aperiodic in CSI request subframe;
Step C:UE feeds back CSI aperiodic for the set of corresponding CSI subframe to eNB on corresponding sub-frame of uplink.
The technical scheme one by one the present invention being disclosed is below launched explanation.
Steps A: UE receives the signaling information that eNB sends, and obtains C
hand C
lcorresponding subframe position; Wherein, C
hand C
lcorresponding different subframe set.
Step B:UE detects the up DCI information of carrying CSI request aperiodic in CSI request subframe.
Wherein, C
hfor subframe set flexibly, C
lfor fixing descending sub frame set; Or,
C
hfor strongly disturbing descending or flexible sub-frame set, C
lfor weak jamming or fixing descending sub frame set.
Particularly, as embodiments of the invention, can also comprise:
If UE is belonging to set D
hcSI request subframe CSI request aperiodic detected, UE feeds back for C at corresponding sub-frame of uplink
hcSI aperiodic; If UE is belonging to set D
lcSI request subframe CSI request aperiodic detected, UE feeds back for C at corresponding sub-frame of uplink
lcSI aperiodic;
Or, if UE, according to CSI request aperiodic, is belonging to set U
hcSI feedback subframe feedback CSI aperiodic, this aperiodic, CSI was for C
h; If UE, according to CSI request aperiodic, is belonging to set U
lcSI feedback subframe feedback CSI aperiodic, this aperiodic, CSI was for C
l.
Wherein, D
hand D
lcorresponding different descending sub frame set, U
hand U
lcorresponding different sub-frame of uplink set.
Wherein, the explicit or conceal signaling that the subframe set under CSI request subframe or CSI feedback subframe receives eNB transmission by UE obtains; Or,
Subframe set under CSI request subframe or CSI feedback subframe is obtained according to the criteria for classifying of communication standard agreement by UE.
, D
h, D
land U
h, U
lobtained by explicit or conceal signaling, or obtain according to the agreement of standard.
Wherein, explicit signaling comprises: the bit indication information of the high-level signaling that eNB sends; Or,
Conceal signaling, comprising:
The PDCCH of the up DCI form that UE detects or the EPDCCH index in the specific PDCCH of UE or EPDCCH search volume, wherein, the PDCCH of up DCI form or EPDCCH comprise CSI request aperiodic.The specific PDCCH/EPDCCH of UE search volume has clear and definite implication in LTE agreement.
In introduction later, launch to be described further with a pair of above-described embodiment of application scenarios.
Particularly, as embodiments of the invention, step B also further comprises:
UE obtains CSI request aperiodic bit from up DCI, determines according to CSI request aperiodic bit the CSI subframe set that needs feedback.
Particularly, determine according to CSI request aperiodic bit the CSI subframe set that needs feedback, comprising:
UE according to CSI request aperiodic bit determine each need feedback aperiodic CSI for subframe set C
hand/or C
l.
Wherein, also comprise:
If UE has configured multiple CSI processes, for example, configurating downlink transmission mode TM10 also supports multiple CSI processes, and UE determines one or more CSI processes that need feedback according to CSI request aperiodic bit.
Wherein, UE according to CSI request aperiodic bit determine each CSI process that needs feedback for subframe set C
hand/or C
l.
In introduction later, with application scenarios two, above-described embodiment is launched to be described further.
Particularly, as embodiments of the invention, before step B, also comprise:
UE by receive eNB send physical layer signaling obtain need feedback aperiodic CSI for descending sub frame set.
Wherein, UE reshuffles the indication field in the physical layer signaling of the current actual TDD uplink-downlink configuration in community by being used to indicate flexible TDD, determine need the CSI aperiodic of feedback for subframe collection C
hand/or C
l.
In introduction later, with application scenarios three, above-described embodiment is launched to be described further.
Step C:UE feeds back CSI aperiodic for the set of corresponding CSI subframe to eNB on corresponding sub-frame of uplink.
Particularly, as embodiments of the invention, step C further comprises:
UE is according to predefined minimum interval G, determined before CSI feedback subframe, and with the subframe collection that the interval of CSI feedback subframe is greater than under first descending sub frame of G be described C
hor C
l, in described CSI feedback subframe, feed back for described C to described eNB
hor C
lcSI aperiodic.
In introduction later, with application scenarios four, above-described embodiment is launched to be described further.
According to said method disclosed by the invention, define CSI subframe set identification by implicit expression or explicit mode, after terminal is obtained the indication information of CSI subframe set in CSI feedback procedure aperiodic, can realize flexible TDD and reshuffle in community for C
hand C
laperiodic CSI feedback, improved systematic function.In addition, the said method that the present invention proposes, changes very littlely to existing equipment or system, can not affect the compatibility of equipment, and it is realized not only simply but also efficient.
Part embodiment the present invention being disclosed below by four application scenarioss is specifically introduced.
Application scenarios one:
In this application scene, the descending sub frame at the up DCI place that definition comprises CSI request aperiodic (referred to as CSI request subframe, lower same) and C
hand C
lcorresponding relation (being called mode one), or the sub-frame of uplink of definition feedback CSI aperiodic (referred to as CSI feedback subframe, lower with) and C
hand C
lcorresponding relation (being called mode two), system adopts wherein a kind of mode to realize the instruction of CSI subframe collection, but two kinds of modes can not exist simultaneously.Particularly, for mode one, ask subframe to be divided into two set D CSI
hand D
l, wherein, these two set can only comprise an element, D
hcSI aperiodic that aperiodic in interior descending sub frame, CSI request triggered feeds back all for C
h, and D
lcSI aperiodic that aperiodic in interior descending sub frame, CSI request triggered feeds back all for C
l; For mode two, ask subframe to be divided into two set U CSI
hand U
l, U
hin sub-frame of uplink feedback aperiodic CSI all for C
h, and U
lin sub-frame of uplink feedback aperiodic CSI all for C
l.As shown in Figure 3, the method comprises the following steps:
Step 301, UE receives eNB signaling and obtains C
hand C
lcorresponding subframe position.
Wherein said signaling is generally cell system message or rrc layer signaling, C
hand C
lcorresponding subframe position is indicated by the mode of bit mapping (Bit Map).
Step 302, UE obtains CSI in community asks subframe or CSI to feed back the dividing mode of subframe.
Here CSI request sub-frame division mode refers to that it is two set D that CSI is asked to sub-frame division
hand D
l, wherein D
hon CSI aperiodic that triggers of CSI request feed back for C
h, and D
lon CSI aperiodic that triggers of CSI request aperiodic feed back for C
l; And the dividing mode of CSI feedback subframe refers to that it is two set U that CSI is fed back to sub-frame division
hand U
l, these two set can only comprise element, wherein a U
hupper feedback aperiodic CSI for C
h, and U
lon feedback aperiodic CSI for C
l.
According to a kind of implementation of the present invention, CSI asks/feeds back the division of subframe can pass through the explicit instruction of signaling, and now UE need to receive community signaling and ask/feed back the division information of subframe to obtain CSI.Such as, the division of subframe can be asked/be fed back by the bit sequence instruction CSI being made up of 20 bits to high-level signaling, wherein first bit correspondence of bit sequence meets first subframe in the radio frames of radio frame number SFN mod2=0, other subframe in radio frames SFN and radio frames SFN+1 is corresponding successively with other bit of bit sequence, if wherein bit value is 1, show that corresponding subframe belongs to D
h, D
l, U
hor U
l.
According to another mode of the present invention, CSI asks/feeds back the division of subframe directly to be defined by standard.
Such as, for mode one, if the TDD uplink-downlink configuration of the SIB1 of community broadcast is configuration #1, and subframe #4 and subframe #9 be configured to MBSFN subframe, CSI request subframe comprise subframe #0, #1, #4, #5, #6, #9}, can be by D
hbe defined as subframe { #0, #5, #6}, and by D
lbe defined as subframe { #1, #4, #9}; For mode two, if community subframe #2 and subframe #7 are set to fixing sub-frame of uplink, subframe #2 and subframe #7 are constant in the flexible TDD reconfiguration system course of work is up, can be by U
hbe defined as subframe { #2}, and by U
lbe defined as subframe { #7}.
For mode one, another implementation of the present invention is, indicate the division of CSI request subframe by conceal signaling, the division of the index instruction CSI request subframe of the up DCI by carrying CSI request aperiodic in the specific PDCCH of UE or EPDCCH search volume.Particularly, such as having 6 PDCCH or EPDCCH in the specific PDCCH of UE or EPDCCH search volume, manipulative indexing value Idx, wherein Idx ∈ 0,1 ... 5}, if comprise the Idx mould N corresponding to up DCI of CSI request equal 0(wherein N reaction be C
hand C
lthe ratio of interior subframe, can make it equal 3), this CSI request subframe belongs to D
lotherwise,, this CSI request subframe belongs to D
h.
Step 303, UE detects the up DCI that carries CSI request aperiodic in CSI request subframe.
Step 304, UE feeds back CSI aperiodic for the set of corresponding CSI subframe on corresponding sub-frame of uplink n.
Particularly, for mode one, if the up DCI place subframe that comprises CSI request aperiodic that UE detects in step 303 belongs to D
h, or for mode two, sub-frame of uplink n belongs to U
h, UE feeds back for CSI subframe collection C
hcSI aperiodic.UE should be at descending sub frame n-n
refin determine CSI reference resources, one step surveying CSI aperiodic that goes forward side by side, wherein, if UE has configured downlink transfer pattern TM1～9 or other descending TM and has only configured CSI process, a n
refcSI reference resources to be positioned at comprised the effective descending sub frame that triggers uplink scheduling signaling (UL Grant) place of CSI aperiodic; If UE has configured 2 or 3 CSI processes, for example, the CSI process number of configurating downlink TM10 and configuration equals 2 or 3, n
reffor meeting n
refbe more than or equal to 4 and n-n
refbelong to C
hminimum value; If UE has configured 4 CSI processes, for example, the CSI process number of descending TM10 and configuration equals 4, n
reffor meeting n
refbe more than or equal to 5 and n-n
refbelong to C
hminimum value.
For mode one, if the up DCI place subframe that comprises CSI request aperiodic that UE detects in step 303 belongs to D
l, or for mode two, sub-frame of uplink n belongs to U
l, UE feeds back for CSI subframe collection C
lcSI aperiodic.The CSI reference resources of UE is at descending sub frame n-n
refin, and UE further measures CSI aperiodic, wherein, if UE has configured downlink transfer pattern TM1～9 or other descending TM and has only configured CSI process, a n
refcSI reference resources to be positioned at comprised the effective descending sub frame that triggers uplink scheduling signaling (UL Grant) place of CSI aperiodic; If UE has configured 2 or 3 CSI processes, for example, the CSI process number of configurating downlink TM10 and configuration equals 2 or 3, n
reffor meeting n
refbe more than or equal to 4 and n-n
refbelong to C
lminimum value; If UE has configured 4 CSI processes, for example, the CSI process number of configurating downlink TM10 and configuration equals 4, n
reffor meeting n
refbe more than or equal to 5 and n-n
refbelong to C
lminimum value.
So far, this application scene flow process finishes.According to the method for this application scene, can ask by CSI the instruction of subframe or CSI feedback subframe, realize for C
hor C
laperiodic CSI feedback triggering.Be to be understood that, above-mentioned steps 302 is a kind of implementation, only need ensure before step S304 carries out, execution step 302, obtain in advance the subframe aggregate information that needs feedback, and and non-limiting step 302 must be execution between step 301 and step 303.
Application scenarios two:
In this application scene, UE is according to the instruction of CSI request bit, and feedback is for CSI aperiodic of corresponding CSI subframe set.As shown in Figure 4, comprise the following steps:
Step 401, UE receives eNB signaling and obtains C
hand C
lcorresponding subframe position.
Wherein said signaling is generally cell system message or rrc layer signaling, C
hand C
lcorresponding subframe position is indicated by the mode of bit mapping (Bit Map).
Step 402, UE detects the up DCI that carries CSI request aperiodic in CSI request subframe.
Step 403, UE feeds back CSI aperiodic for the set of corresponding CSI subframe on corresponding sub-frame of uplink n.
Feedback aperiodic CSI institute for the set of CSI subframe ask the state of bit relevant with CSI aperiodic detecting in step 402.The Serving cell, PUSCH place of uplink authorization signaling (UL Grant) scheduling that here, note comprises CSI request bit is Serving cell c.
According to a kind of implementation of the present invention, suppose that UE has only configured a Serving cell, for example, to downlink transfer pattern TM1～9 or other descending TM and only configured a CSI process,, only configure the TM10 of a CSI process, divided two CSI subframe collection.The figure place of supposing above-mentioned CSI request bit is 2, can redefine each code word of these two bits, thereby trigger and in CSI, further indicate the CSI or simultaneously trigger the CSI of two CSI subframe collection aperiodic that will trigger which CSI subframe collection aperiodic in instruction.For example, a kind of possible indicating mode is as shown in table 2.The figure place of supposing above-mentioned CSI request bit is 1, can define bit value ' 0 ' instruction and not feed back CSI aperiodic, and bit value ' 1 ' can be indicated CSI aperiodic that simultaneously feeds back two CSI subframe collection; Or, can define bit value ' 1 ' indication feedback aperiodic CSI for the code word of subframe collection and CSI request bit while being 2 bits (' 01 ', ' 10 ' or one of ' 11 ') indication feedback aperiodic CSI for subframe collection identical, for example, with code word ' 01 ' indication feedback aperiodic CSI for subframe collection identical.
Table 2CSI request number of bits is 2 o'clock CSI request bit status implications corresponding to it
| CSI asks bit value | Corresponding implication |
| ’00’ | Do not feed back CSI aperiodic |
| ‘01’ | Feedback is for C HCSI aperiodic |
| ‘10’ | Feedback is for C LCSI aperiodic |
| ‘11’ | Feedback is for C HAnd C LCSI aperiodic |
According to another implementation of the present invention, suppose that UE is operated in carrier aggregation simultaneously and flexibly under TDD reconfiguration mode and to each carrier wave, works in descending TM1～9 or other descending TM and only configured a CSI process, for example, only configure the TM10 of a CSI process.Here, each carrier wave can be divided maximum two CSI subframe collection.For example, can be that Pcell is supported to maximum two the CSI subframe collection of configuration, but Scell is not supported to distinguish CSI subframe collection.The figure place of supposing CSI request bit is 2, can redefine each code word of these two bits, indicate CSI aperiodic that will trigger which service cell set, and further differentiation is CSI aperiodic that triggers which CSI subframe collection of the Serving cell of having divided two CSI subframe collection, or trigger CSI aperiodic of two CSI subframe collection of above-mentioned Serving cell simultaneously.Here, a service cell set can comprise the Serving cell of one or more configuration to UE.If certain carrier wave does not configure two CSI subframe collection, do not distinguish CSI subframe collection but trigger this carrier wave one aperiodic CSI.Here to code word ' 01 ', can remain CSI aperiodic that only triggers Serving cell c.For example, table 2-2A and table 2-2B are two kinds of possible indicating modes.The figure place of supposing above-mentioned CSI request bit is 1, can define bit value ' 0 ' instruction and not feed back CSI aperiodic, and bit value ' 1 ' can be indicated CSI aperiodic of all CSI subframe collection of all Serving cells simultaneously; Or, can define bit value ' 1 ' indication feedback aperiodic, CSI was 2 bits with CSI request bit time CSI aperiodic of a code word (' 01 ', ' 10 ' or one of ' 11 ') indication feedback identical, for example.Identical with CSI aperiodic of code word ' 01 ' indication feedback.
Table 2-A CSI request bit value implication corresponding to it
Table 2-B CSI request bit value implication corresponding to it
According to another implementation of the present invention, suppose that UE is operated in carrier aggregation simultaneously and flexibly under TDD reconfiguration mode and to each carrier wave, works in descending TM1～9 or other descending TM and only configured a CSI process, for example, only configure the TM10 of a CSI process.Here, each carrier wave can be divided maximum two CSI subframe collection.Especially, can be that Pcell is supported to maximum two the CSI subframe collection of configuration, but Scell is not supported to distinguish CSI subframe collection.Can expand the figure place of above-mentioned CSI request bit, for example, increase to 3 bits, aperiodic CSI for the set of CSI subframe indicated by the state of this 3 bit.To each code word of these 3 bits, indicate CSI aperiodic that will trigger a service cell set, and further differentiation is CSI aperiodic that triggers that CSI subframe collection of a Serving cell, or trigger CSI aperiodic of two CSI subframe collection of a Serving cell simultaneously.Here, service cell set can comprise the Serving cell of one or more configuration UE.If certain carrier wave does not configure two CSI subframe collection, do not distinguish CSI subframe collection but trigger this carrier wave one aperiodic CSI.A kind of possible indicating mode is as shown in table 3.The figure place of supposing above-mentioned CSI request bit is 1, can define bit value ' 0 ' instruction and not feed back CSI aperiodic, and bit value ' 1 ' can be indicated CSI aperiodic of all CSI subframe collection of all Serving cells simultaneously; Or, can define bit value ' 1 ' indication feedback aperiodic CSI for a code word (one of code word except ' 000 ') indication feedback while being 3 bits with CSI request bit of Serving cell and subframe collection aperiodic CSI for Serving cell identical with subframe collection, for example.With code word ' 001 ' indication feedback aperiodic CSI for Serving cell identical with subframe collection.
Table 3 flexibly TDD reshuffle with state of carrier aggregation under CSI request bit value implication corresponding to it
According to another implementation of the present invention, suppose that UE only configures one and is operated in the Serving cell under flexible TDD reconfiguration mode and configured multiple CSI processes, for example, configurating downlink TM10 also supports multiple CSI processes.Here, each CSI process can maximum two the CSI subframe collection of Further Division.The figure place of supposing above-mentioned CSI request bit is 2, can redefine each code word of these two bits, thereby trigger and further indicate aperiodic of one group of CSI process the CSI or simultaneously trigger the CSI of two CSI subframe collection aperiodic that will trigger which CSI subframe collection in CSI in instruction.For example, table 4-1 and table 4-2 are two kinds of possible indicating modes.Table 4-1 and table 4-2 in, if a CSI process does not configure two CSI subframe collection, this CSI process is not distinguished to CSI subframe collection but trigger this CSI process one aperiodic CSI.The figure place of supposing above-mentioned CSI request bit is 1, can define bit value ' 0 ' instruction and not feed back CSI aperiodic, and bit value ' 1 ' can be indicated CSI aperiodic of all CSI subframe collection that simultaneously feed back all CSI processes; Or bit value ' 1 ' can be indicated CSI aperiodic of all CSI subframe collection that feed back one group of CSI process simultaneously; Or, can define bit value ' 1 ' indication feedback aperiodic CSI for a code word while being 2 bits with CSI request bit of CSI process sets and subframe collection (' 01 ', ' 10 ' or one of ' 11 ') indication feedback aperiodic CSI for CSI process sets identical with subframe collection, for example.With code word ' 01 ' indication feedback aperiodic CSI for CSI process sets identical with subframe collection.
Table 4-1CSI request number of bits is 2 o'clock CSI request bit status implications corresponding to it
Table 4-2CSI request number of bits is 2 o'clock CSI request bit status implications corresponding to it
According to another implementation of the present invention, suppose that UE only configures one and is operated in the Serving cell under flexible TDD reconfiguration mode and configured multiple CSI processes, for example, configurating downlink TM10 also supports multiple CSI processes.Here, each CSI process can maximum two the CSI subframe collection of Further Division.Suppose to increase the figure place of CSI request bit, for example 3 bits, aperiodic CSI for the set of CSI subframe indicated by the state of this 3 bit.Thereby trigger and further indicate aperiodic of one group of CSI process the CSI or simultaneously trigger the CSI of two CSI subframe collection aperiodic that will trigger which CSI subframe collection in CSI in instruction.For example, a kind of possible indicating mode is as shown in table 5.In table 5, if a CSI process does not configure two CSI subframe collection, be to this CSI process do not distinguish CSI subframe collection but trigger this CSI process one aperiodic CSI.The figure place of supposing above-mentioned CSI request bit is 1, can define bit value ' 0 ' instruction and not feed back CSI aperiodic, and bit value ' 1 ' can be indicated CSI aperiodic of all CSI subframe collection that simultaneously feed back all CSI processes; Or bit value ' 1 ' can be indicated CSI aperiodic of all CSI subframe collection that feed back one group of CSI process simultaneously; Or, can define bit value ' 1 ' indication feedback aperiodic CSI for a code word (one of code word except ' 000 ') indication feedback while being 3 bits with CSI request bit of CSI process and subframe collection aperiodic CSI for CSI process identical with subframe collection, for example.With code word ' 001 ' indication feedback aperiodic CSI for CSI process identical with subframe collection.
Table 5 flexibly TDD reshuffle with many CSI process sets situation under CSI request bit value implication corresponding to it
According to another implementation of the present invention, suppose that UE can configure multiple Serving cells, and wherein has a Serving cell working under flexible TDD reconfiguration mode at least, and multiple CSI processes can be configured to each Serving cell, for example, configurating downlink TM10 support multiple CSI processes.Here, each CSI process can maximum two the CSI subframe collection of Further Division.Especially, can be that the CSI process support on Pcell configures maximum two CSI subframe collection, but the CSI process of Scell is not supported to distinguish CSI subframe collection.The figure place of supposing above-mentioned CSI request bit is 2, can redefine each code word of these two bits, thereby trigger CSI aperiodic of one group of Serving cell in instruction, and can configure respectively CSI aperiodic of one group of CSI process to each Serving cell being triggered, and the CSI process of each triggering is further indicated to the CSI or simultaneously trigger the CSI of two CSI subframe collection aperiodic that will trigger which CSI subframe collection.For example, table 6-1 and table 6-2 are two kinds of possible indicating modes.Table 6-1 and table 6-2 in, if a CSI process does not configure two CSI subframe collection, be to this CSI process do not distinguish CSI subframe collection but trigger this CSI process one aperiodic CSI.The figure place of supposing above-mentioned CSI request bit is 1, can define bit value ' 0 ' instruction and not feed back CSI aperiodic, and bit value ' 1 ' can be indicated CSI aperiodic of all CSI subframe collection of all CSI processes of simultaneously feeding back Serving cell c; Or bit value ' 1 ' can be indicated CSI aperiodic of all CSI subframe collection of one group of CSI process feeding back Serving cell c simultaneously; Or, can define bit value ' 1 ' indication feedback aperiodic CSI for a code word while being 2 bits with CSI request bit of CSI process sets and subframe collection (' 01 ', ' 10 ' or one of ' 11 ') indication feedback aperiodic CSI for CSI process sets identical with subframe collection, for example.With code word ' 01 ' indication feedback aperiodic CSI for CSI process sets identical with subframe collection.
Table 6-1CSI request number of bits is 2 o'clock CSI request bit status implications corresponding to it
Table 6-2CSI request number of bits is 2 o'clock CSI request bit status implications corresponding to it
According to another implementation of the present invention, suppose that UE can configure multiple Serving cells, and wherein has a Serving cell working under flexible TDD reconfiguration mode at least, and multiple CSI processes can be configured to each Serving cell, for example, configurating downlink TM10 support multiple CSI processes.Here, each CSI process can maximum two the CSI subframe collection of Further Division.For example, can be that Pcell is supported to maximum two the subframe collection of configuration, but Scell is not supported to distinguish CSI subframe collection.Suppose to increase the figure place of CSI request bit, for example 3 bits, aperiodic CSI for the set of CSI subframe indicated by the state of this 3 bit.Thereby trigger CSI aperiodic of one group of Serving cell in instruction, and can configure respectively CSI aperiodic of one group of CSI process to each Serving cell being triggered, and the CSI process of each triggering is further indicated to the CSI or simultaneously trigger the CSI of two CSI subframe collection aperiodic that will trigger which CSI subframe collection.For example, a kind of possible indicating mode is as shown in table 7.In table 7, if a CSI process does not configure two CSI subframe collection, this CSI process is not distinguished to CSI subframe collection but trigger this CSI process one aperiodic CSI.The figure place of supposing above-mentioned CSI request bit is 1, can define bit value ' 0 ' instruction and not feed back CSI aperiodic, and bit value ' 1 ' can be indicated CSI aperiodic of all CSI subframe collection of all CSI processes of simultaneously feeding back Serving cell c; Or bit value ' 1 ' can be indicated CSI aperiodic of all CSI subframe collection of one group of CSI process feeding back Serving cell c simultaneously; Or, can define bit value ' 1 ' indication feedback aperiodic CSI for a code word (one of code word except ' 000 ') indication feedback while being 3 bits with CSI request bit of CSI process sets and subframe collection aperiodic CSI for CSI process sets identical with subframe collection, for example.With code word ' 001 ' indication feedback aperiodic CSI for CSI process sets identical with subframe collection.
Table 7 flexibly TDD reshuffle with many CSI process sets situation under CSI request bit value implication corresponding to it
Particularly, if according to the instruction of CSI request aperiodic bit in step 402, UE should feed back for CSI subframe collection C
hcSI aperiodic, the CSI reference resources of UE is at descending sub frame n-n
refin, and UE further measures CSI aperiodic.Wherein, if UE has configured downlink transfer pattern TM1～9 or other descending TM and has only configured CSI process, a n
refcSI reference resources to be positioned at comprised the effective descending sub frame that triggers uplink scheduling signaling (UL Grant) place of CSI aperiodic; If UE has configured 2 or 3 CSI processes, for example, the CSI process number of configurating downlink TM10 and configuration equals 2 or 3, n
reffor meeting n
refbe more than or equal to 4 and n-n
refbelong to C
hminimum value; If UE has configured 4 CSI processes, for example, the CSI process number of configurating downlink TM10 and configuration equals 4, n
reffor meeting n
refbe more than or equal to 5 and n-n
refbelong to C
hminimum value.
If according to the instruction of CSI request aperiodic bit in step 402, UE should feed back for CSI subframe collection C
lcSI aperiodic, CSI aperiodic of UE feedback should be at descending sub frame n-n
refin CSI reference resources on the result measured, wherein, if UE has configured downlink transfer pattern TM1～9 or other descending TM and has only configured CSI process, a n
refcSI reference resources to be positioned at comprised the effective descending sub frame that triggers uplink scheduling signaling (UL Grant) place of CSI aperiodic; If UE has configured 2 or 3 CSI processes, for example, the CSI process number of configurating downlink TM10 and configuration equals 2 or 3, n
reffor meeting n
refbe more than or equal to 4 and n-n
refbelong to C
lminimum value; If UE has configured 4 CSI processes, for example, the CSI process number of configurating downlink TM10 and configuration equals 4, n
reffor meeting n
refbe more than or equal to 5 and n-n
refbelong to C
lminimum value.
So far, this application scene flow process finishes.As above, can be by redefining the implication of CSI request aperiodic bit or increasing the method for extra indication bit, realize for different CSI subframe collection aperiodic CSI feedback triggering.
Application scenarios three:
Reshuffle in community at flexible TDD, system conventionally can be by being operated in current the adopted actual TDD uplink-downlink configuration of UE under flexible TDD reconfiguration mode in physical layer signaling TCI notifying cell.In this application scene, by add a CSI subframe set pointer section F in TCI, be used to indicate CSI feedback aperiodic for subframe collection.As shown in Figure 5, comprise the following steps:
Step 501, UE receives eNB signaling and obtains C
hand C
lcorresponding subframe position.
Wherein said signaling is generally cell system message or rrc layer signaling, C
hand C
lcorresponding subframe position is indicated by the mode of bit mapping (Bit Map).
Step 502, UE receives TCI, obtain CSI feedback aperiodic for the indication bit F of subframe collection.
Step 503, UE detects the up DCI that carries CSI request aperiodic in CSI request subframe.
Step 504, CSI aperiodic of the UE CSI subframe set that feedback is indicated for field F on corresponding sub-frame of uplink n.
The transmission cycle of supposing TCI is T radio frames, feedback aperiodic CSI for the value of the field F that detects within certain TCI transmission cycle with UE of CSI subframe set relevant.According to a kind of implementation of the present invention, the above-mentioned TCI transmission cycle is that the TCI that comprises the up DCI place that CSI asks aperiodic sends the cycle; According to another implementation of the present invention, the above-mentioned TCI transmission cycle is that the TCI at the sub-frame of uplink place of feedback CSI aperiodic request sends the cycle.Wherein, for above-mentioned two kinds of implementations, the value of F and aperiodic CSI subframe collection a kind of possible corresponding relation as shown in table 8 or table 9.
When table 8F field is 1 bit, the value of this field and aperiodic CSI subframe collection corresponding relation
| F field value | Corresponding implication |
| ’0’ | Feedback is for C HCSI aperiodic |
| ‘1’ | Feedback is for C LCSI aperiodic |
When table 9F field is 2 bit, the value of this field and aperiodic CSI subframe collection corresponding relation
| F field value | Corresponding implication |
| ’00’ | Feedback is for C HCSI aperiodic |
| ’01’ | Feedback is for C LCSI aperiodic |
| ‘10’ | Feed back for C simultaneously HAnd C LCSI aperiodic |
| ‘11’ | Retain |
Particularly, if according to the instruction of CSI subframe set pointer section F in step 502, UE should feed back for CSI subframe collection C
hcSI aperiodic, the CSI reference resources of UE is at descending sub frame n-n
refin, and UE further measures CSI aperiodic.Wherein, if if UE UE has configured downlink transfer pattern TM1～9 or other descending TM and has only configured CSI process, a n
refcSI reference resources to be positioned at comprised the effective descending sub frame that triggers uplink scheduling signaling (UL Grant) place of CSI aperiodic; If UE has configured 2 or 3 CSI processes, for example, the CSI process number of configurating downlink TM10 and configuration equals 2 or 3, n
reffor meeting n
refbe more than or equal to 4 and n-n
refbelong to C
hminimum value; If UE has configured 4 CSI processes, for example, the CSI process number of configurating downlink TM10 and configuration equals 4, n
reffor meeting n
refbe more than or equal to 5 and n-n
refbelong to C
hminimum value.
If according to the instruction of bit F in step 502, UE should feed back for CSI subframe collection C
lcSI aperiodic, the CSI reference resources of UE is at descending sub frame n-n
refin, and UE further measures CSI aperiodic.Wherein, if if UE UE has configured downlink transfer pattern TM1～9 or other descending TM and has only configured CSI process, a n
refcSI reference resources to be positioned at comprised the effective descending sub frame that triggers uplink scheduling signaling (UL Grant) place of CSI aperiodic; If UE has configured 2 or 3 CSI processes, for example, the CSI process number of configurating downlink TM10 and configuration equals 2 or 3, n
reffor meeting n
refbe more than or equal to 4 and n-n
refbelong to C
lminimum value; If UE has configured 4 CSI processes, for example, the CSI process number of configurating downlink TM10 and configuration equals 4, n
reffor meeting n
refbe more than or equal to 5 and n-n
refbelong to C
lminimum value.
So far, this application scene flow process finishes.According to this application scene, can in the common physical layer signaling that is used to indicate current actual TDD uplink-downlink configuration, add a bit, be used to indicate triggering aperiodic CSI feedback for CSI subframe collection.
Application scenarios four:
In this application scene, to each CSI feedback subframe n, directly define its CSI reference resources and be positioned at a nearest descending sub frame n-n who meets certain processing time requirement
ref.Thereby according to descending sub frame n-n
refbelong to C
hor C
ldetermine that current CSI report aperiodic is CSI aperiodic that triggers which CSI subframe collection.
As shown in Figure 6, comprise the following steps:
Step 601, UE receives eNB signaling and obtains C
hand C
lcorresponding subframe position.
Wherein said signaling is generally cell system message or rrc layer signaling, C
hand C
lcorresponding subframe position is indicated by the mode of bit mapping (Bit Map).
Step 602, UE detects the up DCI that carries CSI request aperiodic in CSI request subframe.
Step 603, UE feeds back CSI aperiodic for the set of corresponding CSI subframe on corresponding sub-frame of uplink n.
Particularly, the CSI reference resources of UE is at descending sub frame n-n
refin, and UE further measures CSI aperiodic.Wherein, if if UE UE has configured downlink transfer pattern TM1～9 or other descending TM and has only configured CSI process, a n
refcSI reference resources to be positioned at comprised the effective descending sub frame that triggers uplink scheduling signaling (UL Grant) place of CSI aperiodic; If UE has configured 2 or 3 CSI processes, for example, the CSI process number of configurating downlink TM10 and configuration equals 2 or 3, n
reffor meeting n
refbe more than or equal to 4 and n-n
reffor belonging to D
hor D
lthe minimum value of descending sub frame; If UE has configured 4 CSI processes, for example, the CSI process number of configurating downlink TM10 and configuration equals 4, n
reffor meeting n
refbe more than or equal to 5 and n-n
reffor belonging to D
hor D
lthe minimum value of descending sub frame.
So far, this application scene flow process finishes.As above,, by directly defining the corresponding relation of CSI feedback subframe and CSI reference resources place subframe, can realize for C
hand C
laperiodic CSI feedback triggering.
Corresponding to said method, as shown in Figure 7, the embodiment of the present invention has also proposed a kind of terminal 100, comprises receiver module 110, detects judge module 120 and sending module 130.
Wherein, the signaling information that receiver module 110 sends for receiving eNB, obtains C
hand C
lcorresponding subframe position; Wherein, C
hand C
lcorresponding different subframe set;
Detect judge module 120 for detect the up DCI information of carrying CSI request aperiodic in CSI request subframe;
Sending module 130 for feeding back CSI aperiodic for the set of corresponding CSI subframe to eNB on corresponding sub-frame of uplink.
Wherein, C
hfor subframe set flexibly, C
lfor fixing descending sub frame set; Or,
C
hfor strongly disturbing descending or flexible sub-frame set, C
lfor weak jamming or fixing descending sub frame set.
Particularly, if detect judge module 120 for belonging to set D
hcSI request subframe CSI request aperiodic detected, sending module 130 is for feeding back for C at corresponding sub-frame of uplink
hcSI aperiodic; If detect judge module 120 for belonging to set D
lcSI request subframe CSI request aperiodic detected, sending module 130 is for feeding back for C at corresponding sub-frame of uplink
lcSI aperiodic; Wherein, D
hand D
lcorresponding different descending sub frame set;
Or, if sending module 130 is for according to CSI request aperiodic, belonging to set U
hcSI feedback subframe feedback CSI aperiodic, this aperiodic, CSI was for C
h; If sending module 130, for according to CSI request aperiodic, is belonging to set U
lcSI feedback subframe feedback CSI aperiodic, this aperiodic, CSI was for C
l; Wherein, U
hand U
lcorresponding different sub-frame of uplink set.
Particularly, receiver module 110 is further used for receiving the explicit or conceal signaling that eNB sends, and detects the affiliated subframe set that judge module 120 obtains CSI request subframe according to explicit or conceal signaling or CSI feeds back subframe; Or,
Detect judge module 120 and be further used for according to the criteria for classifying of communication standard agreement, obtain CSI request subframe or the affiliated subframe set of CSI feedback subframe.
The bit indication information of the high-level signaling that particularly, explicit signaling bag eNB sends; Or,
Conceal signaling comprises the PDCCH or the index of EPDCCH in the specific PDCCH of described UE or EPDCCH search volume that detect the up DCI form that detects of judge module 120, and wherein the PDCCH of up DCI form or EPDCCH comprise CSI request aperiodic.Wherein, the specific PDCCH/EPDCCH of UE search volume has clear and definite implication in LTE agreement.
As the embodiment of terminal 100, receiver module 110 is further used for detecting up DCI information, and therefrom obtain CSI request aperiodic bit, detect judge module 120 be further used for according to CSI request aperiodic bit determine need the aperiodic of feedback CSI for subframe set.
Particularly, in the time of configurating downlink TM1～9, detect judge module 120 be further used for according to CSI request aperiodic bit determine each CSI that needs feedback for subframe collection C
hand/or C
l.
Particularly, in the time having configured multiple CSI process, for example, configurating downlink TM10 also supports multiple CSI processes, detects judge module 120 and is further used for determining according to CSI request aperiodic bit the one or more CSI processes that need feedback.
Particularly, in the time having configured multiple CSI process, for example, configurating downlink TM10 also supports multiple CSI processes, detect judge module 120 be further used for according to CSI request aperiodic bit determine each CSI process that needs feedback for subframe collection C
hand/or C
l.
As the embodiment of terminal 100, receiver module 110 is further used for detecting the physical layer signaling that is used to indicate flexible TDD and reshuffles the current actual TDD uplink-downlink configuration in community, and therefrom obtain corresponding indication field, determine need the CSI aperiodic of feedback for subframe collection C
hand/or C
l.
As the embodiment of terminal 100, detect judge module 120 and be further used for according to predefined minimum interval G, determined before CSI feedback subframe, and with the subframe collection that the interval of CSI feedback subframe is greater than under first descending sub frame of G be described C
hor C
l.
According to the said equipment disclosed by the invention, define CSI subframe set identification by implicit expression or explicit mode, after terminal is obtained the indication information of CSI subframe set in CSI feedback procedure aperiodic, can realize flexible TDD and reshuffle in community for C
hand C
laperiodic CSI feedback, improved systematic function.In addition, the said equipment that the present invention proposes, changes very littlely to existing equipment or system, can not affect the compatibility of equipment, and it is realized not only simply but also efficient.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (23)
1. flexible TDD reshuffles the method that in community, aperiodic, CSI fed back, and it is characterized in that, comprising:
Steps A: UE receives the signaling information that eNB sends, and obtains C
hand C
lcorresponding subframe position; Wherein, C
hand C
lcorresponding different subframe set;
Step B: described UE detects the up DCI information of carrying CSI request aperiodic in CSI request subframe;
Step C: described UE feeds back CSI aperiodic for the set of corresponding CSI subframe to described eNB on corresponding sub-frame of uplink.
2. flexible TDD as claimed in claim 1 reshuffles the method that in community, aperiodic, CSI fed back, it is characterized in that,
Described C
hfor subframe set flexibly, described C
lfor fixing descending sub frame set; Or,
Described C
hfor strongly disturbing descending or flexible sub-frame set, described C
lfor weak jamming or fixing descending sub frame set.
3. flexible TDD as claimed in claim 1 reshuffles the method that in community, aperiodic, CSI fed back, and it is characterized in that, also comprises:
If UE is belonging to set D
hcSI request subframe CSI request aperiodic detected, UE feeds back for C at corresponding sub-frame of uplink
hcSI aperiodic; If UE is belonging to set D
lcSI request subframe CSI request aperiodic detected, UE feeds back for C at corresponding sub-frame of uplink
lcSI aperiodic; Wherein, D
hand D
lcorresponding different CSI request subframe set;
Or, if UE, according to CSI request aperiodic, is belonging to set U
hcSI feedback subframe feedback CSI aperiodic, this aperiodic, CSI was for C
h; If UE, according to CSI request aperiodic, is belonging to set U
lcSI feedback subframe feedback CSI aperiodic, this aperiodic, CSI was for C
l; Wherein, U
hand U
lcorresponding different CSI feedback subframe set.
4. flexible TDD as claimed in claim 3 reshuffles the method that in community, aperiodic, CSI fed back, it is characterized in that,
Explicit or the conceal signaling that subframe set under described CSI request subframe or CSI feedback subframe receives described eNB transmission by described UE obtains; Or,
Subframe set under described CSI request subframe or CSI feedback subframe is obtained according to the criteria for classifying of communication standard agreement by described UE.
5. flexible TDD as claimed in claim 4 reshuffles the method that in community, aperiodic, CSI fed back, it is characterized in that,
Described explicit signaling comprises:
The bit indication information of the high-level signaling that described eNB sends; Or,
Described conceal signaling comprises:
The PDCCH of the up DCI form that described UE detects or the EPDCCH index in the specific PDCCH of described UE or EPDCCH search volume, the PDCCH of wherein said up DCI form or EPDCCH comprise CSI request aperiodic.
6. flexible TDD as claimed in claim 1 reshuffles the method that in community, aperiodic, CSI fed back, and it is characterized in that, described step B also comprises:
Described UE obtains CSI request aperiodic bit from described up DCI, determines according to described CSI request aperiodic bit the CSI subframe set that needs feedback.
7. flexible TDD as claimed in claim 6 reshuffles the method that in community, aperiodic, CSI fed back, and it is characterized in that, determines according to described CSI request aperiodic bit the CSI subframe set that needs feedback, comprising:
Described UE determines according to described CSI request aperiodic bit subframe set C corresponding to CSI that needs feedback
hand/or C
l.
8. flexible TDD as claimed in claim 6 reshuffles the method that in community, aperiodic, CSI fed back, and it is characterized in that, also comprises:
Described UE determines one or more CSI processes that need feedback according to described CSI request aperiodic bit.
9. flexible TDD as claimed in claim 6 reshuffles the method for CSI feedback aperiodic in community, it is characterized in that, described UE according to described CSI request aperiodic bit determine each CSI process that needs feedback for subframe set C
hand/or C
l.
10. flexible TDD as claimed in claim 1 reshuffles the method that in community, aperiodic, CSI fed back, and it is characterized in that, before step B, also comprises:
Described UE by the physical layer signaling that receives described eNB and send obtain need the aperiodic of feedback CSI for descending sub frame set.
11. flexible TDD as claimed in claim 10 reshuffle the method that in community, aperiodic, CSI fed back, it is characterized in that, described UE reshuffles the indication field in the physical layer signaling of the current actual TDD uplink-downlink configuration in community by being used to indicate flexible TDD, determine need the CSI aperiodic of feedback for subframe collection C
hand/or C
l.
12. flexible TDD as claimed in claim 1 reshuffle the method that in community, aperiodic, CSI fed back, and it is characterized in that, described step C further comprises:
Described UE is according to predefined minimum interval G, determined before CSI feedback subframe, and with the subframe collection that the interval of CSI feedback subframe is greater than under first descending sub frame of G be described C
hor C
l, in described CSI feedback subframe, feed back for described C to described eNB
hor C
lcSI aperiodic.
13. 1 kinds of terminals, is characterized in that, comprise receiver module, detect judge module and sending module,
Described receiver module, the signaling information sending for receiving eNB, obtains C
hand C
lcorresponding subframe position; Wherein, C
hand C
lcorresponding different subframe set;
Described detection judge module, for detecting the up DCI information of carrying CSI request aperiodic in CSI request subframe;
Described sending module, for feeding back CSI aperiodic for the set of corresponding CSI subframe to described eNB on corresponding sub-frame of uplink.
14. terminals as claimed in claim 13, is characterized in that, described C
hfor subframe set flexibly, described C
lfor fixing descending sub frame set; Or,
Described C
hfor strongly disturbing descending or flexible sub-frame set, described C
lfor weak jamming or fixing descending sub frame set.
15. terminals as claimed in claim 13, is characterized in that, if described detection judge module is for belonging to set D
hcSI request subframe CSI request aperiodic detected, described sending module is for feeding back for C at corresponding sub-frame of uplink
hcSI aperiodic; If described detection judge module is for belonging to set D
lcSI request subframe CSI request aperiodic detected, described sending module is for feeding back for C at corresponding sub-frame of uplink
lcSI aperiodic; Wherein, D
hand D
lcorresponding different CSI request subframe set;
Or, if described sending module is for according to CSI request aperiodic, belonging to set U
hcSI feedback subframe feedback CSI aperiodic, this aperiodic, CSI was for C
h; If described sending module, for according to CSI request aperiodic, is belonging to set U
lcSI feedback subframe feedback CSI aperiodic, this aperiodic, CSI was for C
l; Wherein, U
hand U
lcorresponding different CSI feedback subframe set.
16. terminals as claimed in claim 15, it is characterized in that, described receiver module is further used for receiving the explicit or conceal signaling that described eNB sends, and described detection judge module is according to described explicit or affiliated subframe set that conceal signaling obtains described CSI request subframe or CSI feedback subframe; Or,
Described detection judge module is further used for according to the criteria for classifying of communication standard agreement, obtains described CSI request subframe or the affiliated subframe set of CSI feedback subframe.
17. terminals as claimed in claim 16, is characterized in that,
Described explicit signaling comprises the bit indication information of the high-level signaling of described eNB transmission; Or,
Described conceal signaling comprises PDCCH or the index of EPDCCH in the specific PDCCH of described UE or EPDCCH search volume of the up DCI form that described detection judge module detects, the PDCCH of wherein said up DCI form or EPDCCH comprise CSI request aperiodic.
18. terminals as claimed in claim 13, it is characterized in that, described receiver module is further used for detecting described up DCI information, and therefrom obtain CSI request aperiodic bit, described detection judge module be further used for according to described CSI request aperiodic bit determine need the aperiodic of feedback CSI for subframe set.
19. terminals as claimed in claim 18, is characterized in that, described detection judge module be further used for according to described aperiodic of CSI request bit determine need the CSI of feedback for subframe collection C
hand/or C
l.
20. terminals as claimed in claim 18, is characterized in that, described detection judge module is further used for determining according to described CSI request aperiodic bit the one or more CSI processes that need feedback.
21. terminals as claimed in claim 18, is characterized in that, described detection judge module be further used for according to described aperiodic of CSI request bit determine each CSI process that needs feedback for subframe collection C
hand/or C
l.
22. terminals as claimed in claim 13, it is characterized in that, described receiver module is further used for detecting the physical layer signaling that is used to indicate flexible TDD and reshuffles the current actual TDD uplink-downlink configuration in community, and therefrom obtain corresponding indication field, determine need the CSI aperiodic of feedback for subframe collection C
hand/or C
l.
23. terminals as claimed in claim 13, it is characterized in that, described detection judge module is further used for according to predefined minimum interval G, determined before CSI feedback subframe, and with the subframe collection that the interval of CSI feedback subframe is greater than under first descending sub frame of G be described C
hor C
l.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310488010.XA CN104113397B (en) | 2013-04-16 | 2013-10-17 | The method and apparatus of aperiodic CSI feedback in flexible TDD reconfiguration system |
| US14/295,177 US9923699B2 (en) | 2013-08-08 | 2014-06-03 | Method and apparatus for feeding back aperiodic CSI in flexible TDD reconfiguration system |
| PCT/KR2014/004924 WO2015020308A1 (en) | 2013-08-08 | 2014-06-03 | Method and apparatus for feeding back aperiodic csi in flexible tdd reconfiguration system |
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310132188.0 | 2013-04-16 | ||
| CN201310132188 | 2013-04-16 | ||
| CN2013101321880 | 2013-04-16 | ||
| CN201310344515 | 2013-08-08 | ||
| CN201310344515.9 | 2013-08-08 | ||
| CN2013103445159 | 2013-08-08 | ||
| CN201310488010.XA CN104113397B (en) | 2013-04-16 | 2013-10-17 | The method and apparatus of aperiodic CSI feedback in flexible TDD reconfiguration system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104113397A true CN104113397A (en) | 2014-10-22 |
| CN104113397B CN104113397B (en) | 2019-09-24 |
Family
ID=51710038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310488010.XA Active CN104113397B (en) | 2013-04-16 | 2013-10-17 | The method and apparatus of aperiodic CSI feedback in flexible TDD reconfiguration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104113397B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107113143A (en) * | 2014-12-23 | 2017-08-29 | Lg电子株式会社 | For the method for transmitting-receiving enhancing physical downlink control channel in the wireless access system for supporting unlicensed frequency band and the equipment for supporting this method |
| CN109478971A (en) * | 2016-08-11 | 2019-03-15 | Lg 电子株式会社 | For reporting the method and its equipment of the channel status in wireless communication system |
| CN109802787A (en) * | 2017-11-17 | 2019-05-24 | 维沃移动通信有限公司 | Transmission method, network side equipment and the terminal device of transmission configuration instruction TCI |
| WO2019120221A1 (en) * | 2017-12-22 | 2019-06-27 | 华为技术有限公司 | Method and device for transmitting wireless signals by means of pdsch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102468933A (en) * | 2010-11-15 | 2012-05-23 | 华为技术有限公司 | Method, device and system for feeding back channel state information |
| CN102893686A (en) * | 2010-11-09 | 2013-01-23 | 瑞典爱立信有限公司 | Method and arrangement for reporting channel state information in telecommunication system |
| WO2013023291A1 (en) * | 2011-08-12 | 2013-02-21 | Research In Motion Limited | Methods of channel state information feedback and transmission in coordinated multi-point wireless communications system |
-
2013
- 2013-10-17 CN CN201310488010.XA patent/CN104113397B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102893686A (en) * | 2010-11-09 | 2013-01-23 | 瑞典爱立信有限公司 | Method and arrangement for reporting channel state information in telecommunication system |
| CN102468933A (en) * | 2010-11-15 | 2012-05-23 | 华为技术有限公司 | Method, device and system for feeding back channel state information |
| WO2013023291A1 (en) * | 2011-08-12 | 2013-02-21 | Research In Motion Limited | Methods of channel state information feedback and transmission in coordinated multi-point wireless communications system |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107113143A (en) * | 2014-12-23 | 2017-08-29 | Lg电子株式会社 | For the method for transmitting-receiving enhancing physical downlink control channel in the wireless access system for supporting unlicensed frequency band and the equipment for supporting this method |
| US11368968B2 (en) | 2014-12-23 | 2022-06-21 | Lg Electronics Inc. | Method for configuring and scheduling partial subframe in wireless access system supporting unlicensed band, and device for supporting same |
| US11357021B2 (en) | 2014-12-23 | 2022-06-07 | Lg Electronics Inc. | Method for transceiving enhanced physical downlink control channel in wireless access system supporting unlicensed band, and device supporting same |
| US11197307B2 (en) | 2014-12-23 | 2021-12-07 | Lg Electronics Inc. | Method for reporting channel state information in wireless access system supporting unlicensed bands, and apparatus supporting same |
| US10477565B2 (en) | 2014-12-23 | 2019-11-12 | Lg Electronics Inc. | Method for transceiving enhanced physical downlink control channel in wireless access system supporting unlicensed band, and device supporting same |
| US10492210B2 (en) | 2014-12-23 | 2019-11-26 | Lg Electronics Inc. | Method for reporting channel state information in wireless access system supporting unlicensed bands, and apparatus supporting same |
| CN107113143B (en) * | 2014-12-23 | 2020-06-05 | Lg电子株式会社 | Method and apparatus for transceiving enhanced physical downlink control channel |
| US10708932B2 (en) | 2014-12-23 | 2020-07-07 | Lg Electronics Inc. | Method for configuring and scheduling partial subframe in wireless access system supporting unlicensed band, and device for supporting same |
| US11050540B2 (en) | 2016-08-11 | 2021-06-29 | Lg Electronics Inc. | Method for reporting channel state in wireless communication system and device therefor |
| CN109478971A (en) * | 2016-08-11 | 2019-03-15 | Lg 电子株式会社 | For reporting the method and its equipment of the channel status in wireless communication system |
| CN109802787B (en) * | 2017-11-17 | 2021-01-08 | 维沃移动通信有限公司 | Transmission method for Transmission Configuration Indication (TCI), network side equipment and terminal equipment |
| CN109802787A (en) * | 2017-11-17 | 2019-05-24 | 维沃移动通信有限公司 | Transmission method, network side equipment and the terminal device of transmission configuration instruction TCI |
| US11463994B2 (en) | 2017-11-17 | 2022-10-04 | Vivo Mobile Communication Co., Ltd. | Method of sending transmission configuration indication TCI, network-side device, and terminal device |
| WO2019120221A1 (en) * | 2017-12-22 | 2019-06-27 | 华为技术有限公司 | Method and device for transmitting wireless signals by means of pdsch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104113397B (en) | 2019-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11894924B2 (en) | Method and apparatus for performing uplink/downlink transmission in a flexible subframe | |
| CN102932090B (en) | Detection, the method and apparatus of transmission information | |
| CN103516496B (en) | A method of sending HARQ-ACK feedback information | |
| KR101909196B1 (en) | Methods, apparatuses, and computer program products for providing dynamic uplink-downlink reconfiguration information to user equipments | |
| CN102468950B (en) | Information transmission method, terminal, base station and communication system | |
| CN103945541B (en) | Trigger method and equipment that SRS signal is sent | |
| CN105794287A (en) | Method for monitoring PDCCH in FDD half-duplex communication and terminal thereof | |
| KR20160146947A (en) | A method and apparatus for transmitting uplink sounding reference signal | |
| US10932246B2 (en) | Methods and devices for dynamically determining transmission locations of UL DMRS | |
| CN103650447A (en) | Method for transmitting or receiving pdcch and user equipment or base station for the method | |
| KR20160145733A (en) | Method and apparatus for processing flexible duplex | |
| CN101478808A (en) | Downlink control information sending and detecting method | |
| CN102098148A (en) | Data processing method and equipment under carrier aggregation system | |
| CN104079390A (en) | Method and equipment for transmitting HARQ-ACK (Hybrid Automatic Repeat-Request Acknowledgement) feedback information in inter-eNB carrier aggregation system | |
| CN105099633A (en) | Physical downlink shared channel transmission method and device | |
| CN104113397A (en) | Non-periodic CSI feedback method in flexible TDD reconfiguration system and equipment thereof | |
| CN104144509A (en) | Multi-subframe dispatching implementation method and device for PDSCH | |
| CN104080161A (en) | Physical uplink shared channel transmission method and user equipment | |
| CN105099601A (en) | Uplink transmission method and device in flexible FDD system | |
| US9923699B2 (en) | Method and apparatus for feeding back aperiodic CSI in flexible TDD reconfiguration system | |
| CN104811269A (en) | Method and device for transmitting aperiodic CSI | |
| CN104244319A (en) | CSI measuring and reporting method and device | |
| CN109586856A (en) | Transmission, the method and corresponding user equipment, base station for configuring HARQ-ACK feedback information | |
| CN108702260A (en) | Sending, receiving method, terminal device and the access network equipment of feedback information | |
| CN104104465A (en) | Method and device for performing communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |