CN104159302B - Downlink Control Information acquisition methods, device and terminal based on E PDCCH channels - Google Patents
Downlink Control Information acquisition methods, device and terminal based on E PDCCH channels Download PDFInfo
- Publication number
- CN104159302B CN104159302B CN201310178463.2A CN201310178463A CN104159302B CN 104159302 B CN104159302 B CN 104159302B CN 201310178463 A CN201310178463 A CN 201310178463A CN 104159302 B CN104159302 B CN 104159302B
- Authority
- CN
- China
- Prior art keywords
- addressing
- pdcch
- signaling
- new
- pcfich
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of Downlink Control Information acquisition methods, device and terminal based on E PDCCH channels, it is related to LTE technical fields.This method provide it is a kind of by PCFICH dynamics of channels indicate address signaling update node time instance high-level signaling indication scheme, when high-level signaling by PDSCH transmissions give UE high level E PDCCH addressing configured information；It is instructed after renewal, when it is preassigned value that PCFICH, which indicates PDCCH symbolic numbers, and eNB and UE is addressed according to the high-rise addressing signaling of recent renewal.This method, device and terminal recessiveness solve the problems, such as that E PDCCH high level addressing signalings have the instruction fuzzy phase, solve the problems, such as the disunity that addressing information is likely to occur between UE and eNB within the instruction fuzzy phase, reduce that the problem brings can not correct parsing E PDCCH channel informations of fuzzy phase situation, reduce the corresponding wasting of resources.
Description
Technical field
The present invention relates to LTE（Long Term Evolution, Long Term Evolution）Technical field, more particularly to one kind are based on
E-PDCCH（Enhanced Physical Downlink Control Channel, enhanced Physical Downlink Control Channel）Letter
Downlink Control Information acquisition methods, device and the terminal in road.
Background technology
3GPP（The3rd Generation Partnership Project, third generation partner program）LTE
（Long Term Evolution, Long Term Evolution）System is 3G（3rd Generation, 3-G (Generation Three mobile communication system)）Length
Phase evolution version.LTE system compares more existing GSM（Global System of Mobile communication, the whole world
Mobile communcations system）、WCDMA（Wideband Code Division Multiple Access, WCDMA）、
CDMA2000（Code Division Multiple Access2000, CDMA 2000）Deng GSM there is provided
Higher user's peak rate, bigger coverage and more preferable community user QoS（Quality of Service, clothes
Business quality）Deng.LTE-A（LTE-Advanced, advanced Long Term Evolution）System is that it strengthens version, it is proposed that more competitive
System performance index.
The LTE and descending use OFDMA of lte-a system（Orthogonal Frequency Division Multiple
Access, OFDM）Technology, in up direction using the relatively low SC-FDMA of peak-to-average force ratio（Single Carrier-
Frequency Division Multiple Access, single-carrier frequency division multiple access）Technology.In addition, the MIMO used in system
（Multiple Input Multiple Output, multiple-input and multiple-output）Antenna technology provides spatial multiplex gains and hair
Penetrate diversity gain.Therefore, LTE and lte-a system available resources include the dimensions such as time domain, frequency domain and spatial domain, and base station passes through scheduling
And resource allocation algorithm, the channel information based on intra-cell users is reasonably flexibly the suitable time slot of user's distribution, PRB
（PhysicalResource Block, Physical Resource Block）、MCS（Modulation and Coding Scheme, modulating-coding
Form）, transmission power, MIMO transmission scheme etc., to improve throughput of system, while meeting the speed need of Cell Edge User
Ask.
In LTE and lte-a system, the control signaling information of down channel is with various types of DCI（Downlink
Control Information, Downlink Control Information）Transmission, in the LTE system of Release10 and more earlier version, these
DCI passes through PDCCH（Physical Downlink Control Channel, Physical Downlink Control Channel）Carrying.
In the LTE system standard formulation of Release11 versions, redaction UE can pass through E-PDCCH channel bearings.
In the 10ms frame structures that R10 and earlier version LTE and lte-a system are defined, 1ms descending sub frames correspondence one
TTI（Transmission Time Interval, Transmission Time Interval）.Herein, TTI is properly termed as subframe again.One
In individual TTI（In descending sub frame）, n before taking in PDCCH time domains（n<=3）Individual OFDM（Orthogonal Frequency
Division Multiplexing, OFDM）Symbol, takes whole system bandwidth on frequency domain.Other channels include
Such as reference signal, PCFICH（Physical Control Format Indicator Channel, physical control format is indicated
Channel）、PHICH（Physical HARQ Indicator Channel, Physical HARQ Indicator Channel）Deng.Therefore in each of the lower
In row subframe, only the reserved running time-frequency resource of limited quantity can be used for transmission Downlink Control Information, that is, carry DCI information
PDCCH can be very limited amount of with running time-frequency resource.Again because R11 versions and later release LTE system add more senior skills
Art, capacity and covering to down control channel propose more requirements, therefore 3GPP RAN1 working groups pass through research project
And the research of job, introduce E-PDCCH channels.
E-PDCCH still remains PDCCH blind Detecting, and search space is searched for, the technical side such as multiple control units polymerizations
Formula, with PDCCH distinguish be：E-PDCCH is by way of frequency division multiplexing, with PDSCH channel multiplexing resources；Using wave beam forming
It is transmitted etc. transmission mode；Using demodulated reference signal DM-RS（Demodulation Reference Signal）Demodulation letter
Number etc..
In addition to the above described differences, PDCCH employs the mode in search space dynamic addressing, i.e., UE leads in every TTI
After the hash algorithm consulted, its search space information is positioned, to reach the purpose of dynamic instruction control information position.Dynamically refer to
The benefit shown is that the position of UE search spaces is unfixed in every TTI, reduces the possibility that different DCI distribute resource collisions,
The downlink transfer resource for base station scheduling per user provides greatly flexibility simultaneously.
But in E-PDCCH, because do not fixed for the resource size and position of its distribution per TTI, therefore UE does not have
Give tacit consent to the available search spatial aggregation determined, therefore the method for positioning search space in PDCCH with hash algorithm can not be used（Cause
For by PCFICH information, UE can accurately know the position in its all available search space）.How the seeking of E-PDCCH is solved
Location problem, the big problem applied as E-PDCCH technologies.
There is two kinds of E-PDCCH addressing system at present.The first is the method for dynamic instruction, i.e., opened up in PDCCH spaces
One block space resource, indicates UE E-PDCCH available search space, and then UE is further according to the configured information, empty in E-PDCCH
Between search for its DCI information.This method belongs to the method for dynamic instruction, and system call flexibility will not weaken.But using in PDCCH
Space indicates E-PDCCH available search space, and the frequency that E-PDCCH is obtained selects what gain and beamforming transmission pattern were obtained
Gain, will also be limited to PDCCH performance, while two grades indicate that correctness and stability that control information is transmitted can be caused to become
Difference, thus the two-stage dynamic indicating means be used as E-PDCCH addressing indicating means need solve the problem of it is also a lot.
Another is the method for the semi-static instruction of high-level signaling.This method abandons the base station tune that dynamic indication method is brought
The flexibility of degree, its E-PDCCH resource location is indicated UE using high-rise RRC signaling.Because RRC signaling is high-level signaling, it refers to
Show that the update cycle is long, be consequently belonging to semi-static instruction, i.e., after UE receives the RRC signaling of renewal, it can be being updated next time
Before, it is addressed by the addressing information, is semi-static addressing instruction.It is semi-static addressing cause within the update cycle, UE
Only need to receive a descending control signaling, receive descending control signaling without each TTI, reduce the transmission number of signaling
Mesh.Although losing the flexibility of dynamic instruction, signal resource is saved, signaling utilization rate is improved.Therefore, high level half is quiet
The method that state signaling is indicated obtains the selection of many professionals.
But high-rise semi-static signaling indication method has that signaling indicates the fuzzy phase.Signaling indicates the fuzzy phase i.e. when UE is logical
Data channel reception is crossed to eNB（Evolved NodeB, evolved base station）High-level signaling addressing configured information after, UE is pressed
DCI addressing is carried out in several subsequent TTI according to the addressing configured information, untill the high-level signaling new until having updates；
After eNB sends the high-level signaling addressing configured information updated in some TTI, receive the high-level signaling from UE and complete to solve to UE
Analysis, it is necessary to time and do not know, therefore UE when complete update addressing configured information parse and seeking according to the renewal
Location configured information work, eNB can not judge, therefore eNB can not also determine that the addressing configured information updated can be used in which TTI
DCI is dispatched in E-PDCCH.Namely since that TTI that eNB sends the high-rise addressing configured information updated, there is one
The long signaling of timing obscures the phase, within this period, and eNB does not know when UE updates addressing configured information.Therefore, if
ENB dispatches DCI, then UE may nothing after high-level signaling renewal addressing configured information is sent according to the schedule information of renewal
Method is correctly parsed, and causes the waste of resource, while have impact on UE communication process.
The content of the invention
The inventors found that above-mentioned have problem in the prior art, and at least one be therefore directed in described problem
Individual problem proposes a kind of new technical scheme.
It is used for the technology that the Downlink Control Information based on E-PDCCH channels is obtained it is an object of the present invention to provide a kind of
Scheme.
According to the first aspect of the invention there is provided a kind of Downlink Control Information acquisition methods based on E-PDCCH channels,
Including：
Terminal receives new E-PDCCH by high-level signaling and addresses configured information；
Terminal judges whether the PCFICH indicated numbers of descending sub frame are high-rise addressing signaling update indicated number；
If it is, terminal carries out DCI addressing according to new E-PDCCH addressing configured information in TTI.
Alternatively, this method also includes：Terminal is received after new E-PDCCH addressing configured informations, and HARQ is sent to eNB
Feedback；
The PCFICH of descending sub frame is set to high-rise addressing signaling update in addressing signaling update node time instance and indicated by eNB
Number；
ENB is to receiving the terminal of HARQ feedback using new E-PDCCH addressing configured information scheduling DCI；ENB is not to receiving
The terminal of HARQ feedback is using old E-PDCCH addressing configured information scheduling DCI.
Alternatively, terminal carries out DCI addressing according to new E-PDCCH addressing configured information in descending sub frame includes：
Terminal carries out DCI addressing according to new E-PDCCH addressing configured information in descending sub frame, if it succeeds,
Before next addressing signaling update node time instance arrives, according to new E-PDCCH addressing configured information under each
Row subframe carries out DCI addressing；If it fails, then continuing the E-PDCCH addressing configured information progress DCI not updated according to original
Addressing, if addressed in this case successfully, before next addressing signaling update node time instance arrives, according to original
The addressing configured information for the E-PDCCH not updated carries out DCI addressing to descending sub frame.
Alternatively, PCFICH high-rise addressing signaling update indicated number can be configured different values, but configuration by some cycles
High level addressing signaling update indicated number it is non-instruction more new node TTI in without using.
Alternatively, eNB configures PCFICH recessiveness and indicates to update TTI moment, when early version terminal is more, PCFICH height
Layer addressing signaling update indicated number is set as 0；When early version terminal is less, PCFICH high-rise addressing signaling update indicated number
It is set as 2.
Alternatively, if the PCFICH indicated numbers of descending sub frame are not high-rise addressing signaling update indicated numbers, eNB and terminal
It is continuing with non-update addressing information.
According to another aspect of the present invention there is provided a kind of Downlink Control Information acquisition device based on E-PDCCH channels, bag
Include：
Addressing information receiving module, configured information is addressed for receiving new E-PDCCH by high-level signaling；
More new command moment judge module, for judging whether the PCFICH indicated numbers of descending sub frame are high-rise addressing signaling
Update instruction number；
Downlink Control Information addressed module, if the PCFICH indicated numbers for descending sub frame are high-rise addressing signaling update
Indicated number, then carry out DCI addressing according to new E-PDCCH addressing configured information in TTI.
Alternatively, the device also includes：Addressing information feedback module, receives new E-PDCCH for UE and addresses instruction
HARQ feedback is sent to eNB after information, so that eNB will confirm that the addressing signaling update indicated number of the UE, to receiving HARQ feedback
Terminal using new E-PDCCH addressing configured information scheduling DCI, old E- is used to the terminal for not receiving HARQ feedback
PDCCH addressing configured information scheduling DC.
Alternatively, Downlink Control Information addressed module according to new E-PDCCH addressing configured information in descending sub frame
DCI addressing is carried out, if it succeeds, before next addressing signaling update node time instance arrives, according to new E-PDCCH
Addressing configured information to TTI carry out DCI addressing；If it fails, then continuing to refer to according to the former E-PDCCH not updated addressing
Show that information carries out DCI addressing, if addressed in this case successfully, it is arrived in next addressing signaling update node time instance
Before, the addressing configured information for the E-PDCCH not updated according to original carries out DCI addressing to TTI.
Alternatively, PCFICH high-rise addressing signaling update indicated number can be configured different values, but configuration by some cycles
High level addressing signaling update indicated number it is non-instruction more new node TTI in without using.
Alternatively, eNB configures PCFICH recessiveness and indicates to update TTI moment, when early version terminal is more, PCFICH height
Layer addressing signaling update indicated number is set as 0；When early version terminal is less, PCFICH high-rise addressing signaling update indicated number
It is set as 2.
According to another aspect of the invention there is provided a kind of terminal, including the above-mentioned descending control based on E-PDCCH channels
Information acquisition device.
An advantage of the present invention is that ensureing when high-level signaling indicating downlink control channel, it is to avoid produce signaling mould
The paste phase, efficiently to utilize control channel resource, while reducing unnecessary mistake addressing.
By referring to the drawings to the detailed description of the exemplary embodiment of the present invention, further feature of the invention and its
Advantage will be made apparent from.
Brief description of the drawings
The accompanying drawing for constituting a part for specification describes embodiments of the invention, and is used to solve together with the description
Release the principle of the present invention.
Referring to the drawings, according to following detailed description, the present invention can be more clearly understood from, wherein：
Fig. 1 shows one embodiment of the Downlink Control Information acquisition methods based on E-PDCCH channels according to the present invention
Flow chart.
Fig. 2 shows another implementation of the Downlink Control Information acquisition methods based on E-PDCCH channels according to the present invention
The flow chart of example.
Fig. 3 shows that PCFICH updates the configurable schematic diagram of number.
Fig. 4 shows high-rise configuration PDCCH symbolic number conversion time schematic diagrames.
Fig. 5 shows one embodiment of the Downlink Control Information acquisition device based on E-PDCCH channels according to the present invention
Structure chart.
Fig. 6 shows another implementation of the Downlink Control Information acquisition device based on E-PDCCH channels according to the present invention
The structure chart of example.
Embodiment
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should be noted that：Unless had in addition
Body illustrates that the part and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments does not limit this
The scope of invention.
Simultaneously, it should be appreciated that for the ease of description, the size of the various pieces shown in accompanying drawing is not according to reality
Proportionate relationship draw.
The description only actually at least one exemplary embodiment is illustrative below, never as to the present invention
And its any limitation applied or used.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing a part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
Fig. 1 shows one embodiment of the Downlink Control Information acquisition methods based on E-PDCCH channels according to the present invention
Flow chart.
As shown in figure 1, step 102, terminal receives new E-PDCCH by high-level signaling and addresses configured information.Work as high level
Signaling is for example by PDSCH transmissions to UE（Terminal）Carry out E-PDCCH addressing configured informations；High level addressing signaling update
Afterwards, when it is some preassigned value that PCFICH, which indicates PDCCH symbolic numbers, eNB and UE is sought according to the high level of recent renewal
Location signaling is addressed.
Step 104, terminal judges whether the PCFICH indicated numbers of descending sub frame are high-rise addressing signaling update indicated number.
Step 106, if it is, terminal carries out DCI according to new E-PDCCH addressing configured information in the descending sub frame
Addressing.
There is provided a kind of method that solution E-PDCCH high-level signalings are obscured in above-described embodiment, this method can ensure to work as
During high-level signaling indicating downlink control channel, it is to avoid produce signaling and obscure the phase, efficiently to utilize control channel resource, reduce simultaneously
Unnecessary mistake addressing.
After eNB is in need to institute to be updated a Datagram UE and transmit high-rise more new command, when signaling to be addressed more
When new, when the HARQ feedback updated in the instruction for receiving some UE, updated using new addressing instruction；Or in some regulation
Time in when not receiving some UE Datagram HARQ feedback information of renewal, eNB is at the renewal instruction node moment
Old addressing information priority scheduling UE is preferentially used, if the node time instance does not have its descending control letter of more scheduling of resource
Breath, the priority scheduling UE is wanted in follow-up node time instance, and recessiveness notifies to update addressing failure in this cycle of UE.
When UE runs into the more new command moment, the addressing configured information of recent renewal is addressed first, if it succeeds, next
Individual update is addressed before indicating moment arrival, is addressed by this configured information；If it fails, then continuing what is do not updated according to original
Addressing information is addressed, if it succeeds, explanation eNB does not receive the HARQ information of UE feedbacks, is then indicated in next renewal addressing
Before the TTI of information arrives, addressed by this old information, then will in follow-up TTI if addressing is unsuccessful in the case of this kind
Continue aforesaid operations, until it is determined that still using original addressing signaling using the addressing signaling updated in the addressing period.
Fig. 2 shows another implementation of the Downlink Control Information acquisition methods based on E-PDCCH channels according to the present invention
The flow chart of example.
As shown in Fig. 2 step 202, eNB needs to update the new E- of Datagram UE transmissions by high-level signaling to each
PDCCH addresses configured information.
Step 204, terminal sends HARQ feedback after receiving new E-PDCCH addressing configured informations to eNB.
Step 206, the PCFICH of descending sub frame is set to high-rise addressing signaling by eNB in addressing signaling update node time instance
Update instruction number, the wherein high level addressing signaling update indicated number are effective to all UE.In other node time instance descending sub frames
PCFICH indicated numbers are not configured to high-rise addressing signaling update indicated number.
Step 208, eNB judges whether to receive the HARQ feedback information of each terminal, if received, and eNB uses renewal
Addressing space afterwards dispatches the terminal（Step 210a）；If do not received, eNB dispatches the terminal using old addressing space
（Step 210b）.
Step 212, each terminal determines that the PCFICH of the descending sub frame received is set to high-rise addressing signaling update and indicated
Number.
Step 214, each terminal judges whether to receive new E-PDCCH addressing configured informations, if it is, continuing step
216, if it is not, then continuing step 222.
Step 216, terminal carries out DCI addressing according to new E-PDCCH addressing configured information in descending sub frame.
Step 218, judge whether addressing succeedsIf it is, continuing step 220, otherwise, continue step 222.
Step 220, if it succeeds, before next addressing signaling update node time instance arrives, according to described new
E-PDCCH address configured information to TTI（Descending sub frame）Carry out DCI addressing.
Step 222, if it fails, then continuing to seek according to the former E-PDCCH not updated addressing configured information progress DCI
Location, if addressed in this case successfully, before next addressing signaling update node time instance arrives, according to the original
The E-PDCCH addressing configured informations not updated carry out DCI addressing to TTI.
PCFICH instruction update instruction number can configure, and Fig. 3 shows that PCFICH updates the configurable schematic diagram of number, wherein *
Represent selected PCFICH config updates number.The value is unavailable in the TTI of non-instruction more new node.As tradition UE in system
When more, actual PCFICH indicated numbers are 1 or 2 in TTI, therefore configurable PCFICH update instructions number is 0；When in system
When traditional UE data are less, PCFICH indicated numbers are 0 or 1 in TTI, therefore configurable PCFICH update instructions number is 2.So
The benefit of configuration is, what UE and eNB made signaling update too frequently need not waste unnecessary computing resource.
The specific embodiment of the present invention is introduced below in conjunction with the accompanying drawings.
Fig. 4 shows high-rise configuration PDCCH symbolic number conversion time schematic diagrames.In lte-a system, E-PDCCH needs height
Layer signaling indicates its addressing information, only for the redaction UE that Downlink Control Information is transmitted using E-PDCCH.ENB is accessed in UE
During system, UE is indicated by high-level signaling, when PCFICH indicated numbers are some value（It might as well be set to " 0 "）When, implicit indication
UE and eNB is using the high-rise addressing configured information of recent renewal, and before next instruction updates TTI, PCFICH will not
Config update indicated number, while eNB and UE is sought using the high-rise addressing configured information of recent renewal or the high level without renewal
Location configured information.The example for addressing configured information is specifically only updated to some particular UE for eNB, content is as follows：
At eNB ends, after eNB sends the addressing configured information updated to UE：
If receiving confirmation HARQ information of the UE to the information, illustrate that UE have received the addressing that next needs update
Configured information, then when updating TTI arrivals, eNB configurations PCFICH indicates " 0 ", and can dispatch the UE can not also dispatch the UE；
If not receiving confirmation HARQ information of the UE to the addressing configured information of renewal, eNB update TTI need it is preferential with
Old addressing configured information scheduling UE, the benefit of this method is, if UE have updated addressing configured information, and the HARQ of its feedback
If information is not properly received by eNB, when instruction updates TTI, UE first can enter according to the addressing configured information of renewal
Row E-PDCCH is addressed, if the information understood without success, and UE can be addressed according to old addressing configured information, to avoid because of eNB
The order confusion situation for not receiving the HARQ information of UE feedbacks and producing occurs.If led to updating TTI without more multiple resource
Cross old addressing information and dispatch the UE, eNB preferentially can dispatch the UE in follow-up TTI by old addressing information.
At UE ends, high-rise addressing configured information to E-PDCCH, UE storages are sent when successfully parsing eNB in some time
The addressing configured information, and UE is when each TTI understands PCFICH indicated numbers, if it is indicated that number is " 1 " or " 2 ", then UE
It can be addressed according to addressing configured information before；If it is indicated that number be " 0 ", then UE can according to renewal addressing configured information
It is addressed, if in the TTI of the more new command, UE detects Downlink Control Information according to new addressing configured information, then
Within the new high-level signaling update cycle, UE is addressed according to the addressing configured information of renewal；If in the TTI of the renewal
Interior, UE is not detected by its Downlink Control Information according to new addressing configured information, then UE continues according to old addressing configured information inspection
Survey, if successfully be detected downlink command, UE indicates to believe in the new high-level signaling update cycle still according to addressing before
Breath addressing, if detecting downlink command not successfully, UE repeats detection ordering above in follow-up TTI.
Fig. 5 shows one embodiment of the Downlink Control Information acquisition device based on E-PDCCH channels according to the present invention
Structure chart.As shown in figure 5, the device includes：Addressing information receiving module 51, for receiving new E- by high-level signaling
PDCCH addresses configured information；More new command moment judge module 52, for judge descending sub frame PCFICH indicated numbers whether be
High level addressing signaling update indicated number；Downlink Control Information addressed module 53, if the PCFICH indicated numbers for descending sub frame
For high level addressing signaling update indicated number, then DCI is carried out in descending sub frame according to new E-PDCCH addressing configured information and sought
Location.
Fig. 6 shows another implementation of the Downlink Control Information acquisition device based on E-PDCCH channels according to the present invention
The structure chart of example.As shown in fig. 6, the device also includes in the embodiment：Addressing information feedback module 64 is new for receiving
HARQ feedback is sent to eNB after E-PDCCH addressing configured informations, is sought so that the PCFICH of descending sub frame is set to high level by eNB
Location signaling update indicated number, addresses configured information using new E-PDCCH to the terminal for receiving HARQ feedback and dispatches DCI, to not
The terminal of HARQ feedback is received using old E-PDCCH addressing configured information scheduling DCI.
In one embodiment, Downlink Control Information addressed module according to new E-PDCCH addressing configured information under
DCI addressing is carried out in row subframe, if it succeeds, before next addressing signaling update node time instance arrives, according to new
E-PDCCH addressing configured information to TTI carry out DCI addressing；If it fails, then continuing the E-PDCCH not updated according to original
Addressing configured information carry out DCI addressing, if address in this case successfully, it is next address signaling update node when
It is carved into before coming, the addressing configured information for the E-PDCCH not updated according to original carries out DCI addressing to TTI.
In one embodiment, PCFICH high-rise addressing signaling update indicated number can configure different by some cycles
Value, but the high-rise addressing signaling update indicated number of the configuration in the TTI of non-instruction more new node without using.
In one embodiment, eNB configures PCFICH recessiveness and indicates to update the TTI moment, when early version terminal is more,
PCFICH high-rise addressing signaling update indicated number is set as 0；When early version terminal is less, PCFICH high-rise addressing signaling
Update instruction number is set as 2.
Solve the problems, such as that high-level signaling obscures the phase in the E-PDCCH of lte-a system, have the following advantages that and effect：
Recessiveness solves the problems, such as that E-PDCCH high level addressing signalings have the instruction fuzzy phase, solves the UE within the instruction fuzzy phase
The disunity problem that addressing information is likely to occur between eNB,
Therefore reduce that the problem brings can not correct parsing E-PDCCH channel informations of fuzzy phase situation, reduce
The corresponding wasting of resources and the waste of computing resource.
This method changes smaller to standard, it is only necessary to some fraction of signalings are done to UE and are changed, therefore the technical method more holds
Easily received by most producers.
Earlier version UE is taken into account simultaneously, makes system that there is rear mutually compatibility, change systematic cost is extremely low.
So far, the Downlink Control Information acquisition methods based on E-PDCCH channels according to the present invention are described in detail
And device.In order to avoid the design of the masking present invention, some details known in the field are not described.Those skilled in the art
As described above, completely it can be appreciated how implementing technical scheme disclosed herein.
The method and system of the present invention may be achieved in many ways.For example, can by software, hardware, firmware or
Software, hardware, firmware any combinations come realize the present invention method and system.The said sequence of the step of for methods described
Order described in detail above is not limited to merely to illustrate, the step of method of the invention, it is special unless otherwise
Do not mentionlet alone bright.In addition, in certain embodiments, the present invention can be also embodied as recording to program in the recording medium, these programs
Including the machine readable instructions for realizing the method according to the invention.Thus, the present invention also covering storage is used to perform basis
The recording medium of the program of the method for the present invention.
Although some specific embodiments of the present invention are described in detail by example, the skill of this area
Art personnel are it should be understood that above example is merely to illustrate, the scope being not intended to be limiting of the invention.The skill of this area
Art personnel to above example it should be understood that can modify without departing from the scope and spirit of the present invention.This hair
Bright scope is defined by the following claims.
Claims (12)
1. a kind of Downlink Control Information DCI acquisition methods based on enhanced Physical Downlink Control Channel E-PDCCH, its feature exists
In, including：
Terminal receives new E-PDCCH by high-level signaling and addresses configured information；
The terminal judges whether the Physical Control Format Indicator Channel PCFICH indicated numbers of descending sub frame are configured to high-rise addressing
Signaling update indicated number；
Sought if it is, the terminal carries out DCI according to the new E-PDCCH addressing configured information in the descending sub frame
Location.
2. according to the method described in claim 1, it is characterised in that also include：
The terminal is received after the new E-PDCCH addressing configured informations, and HARQ feedback is sent to evolved base station eNB；
The PCFICH of the descending sub frame is set to high-rise addressing signaling update by the eNB in addressing signaling update node time instance
Indicated number, other node time instances are not configured to the high-rise addressing signaling update indicated number, wherein the high-rise addressing signaling is more
New indicated number is effective to all UE；
The eNB uses the new E- in the addressing signaling update node time instance to the terminal for receiving the HARQ feedback
PDCCH addressing configured information scheduling DCI；The eNB is addressed to the terminal for not receiving the HARQ feedback using old E-PDCCH
Configured information dispatches DCI.
3. method according to claim 2, it is characterised in that the terminal is addressed according to the new E-PDCCH and indicated
Information carries out DCI addressing in the descending sub frame to be included：
The terminal carries out DCI addressing according to the addressing configured information of the new E-PDCCH in the descending sub frame, if
Success, then before next addressing signaling update node time instance arrives, address configured information according to the new E-PDCCH
DCI addressing is carried out in row subframe in each of the lower；If it fails, the E-PDCCH addressing for then continuing not update according to original indicates letter
Breath carries out DCI addressing, if addressed successfully according to the addressing information not updated, in next addressing signaling update node time instance
Before arrival, the E-PDCCH not updated according to the original addresses configured information and carries out DCI addressing to descending sub frame.
4. according to the method described in claim 1, it is characterised in that the high-rise addressing signaling update indicated number of the PCFICH can
Different values are configured by some cycles, but the high-rise addressing signaling update indicated number of the configuration updates node time instance in non-instruction
In descending sub frame without using.
5. method according to claim 4, it is characterised in that eNB configuration PCFICH recessiveness indicates the renewal TTI moment, when
When early version terminal is more, the high-rise addressing signaling update indicated number of the PCFICH is set as 0；When early version terminal is less
When, the high-rise addressing signaling update indicated number of the PCFICH is set as 2.
6. according to the method described in claim 1, it is characterised in that if the PCFICH indicated numbers of the descending sub frame are not configured
For high level addressing signaling update indicated number, eNB is continuing with the former E-PDCCH addressing configured informations not updated with the terminal.
7. a kind of Downlink Control Information DCI acquisition device based on enhanced Physical Downlink Control Channel E-PDCCH, its feature exists
In, including：
Addressing information receiving module, configured information is addressed for receiving new E-PDCCH by high-level signaling；
More new command moment judge module, for judging that the Physical Control Format Indicator Channel PCFICH indicated numbers of descending sub frame are
It is no to address signaling update indicated number to be high-rise；
Downlink Control Information addressed module, if the PCFICH indicated numbers for the descending sub frame are high-rise addressing signaling update
Indicated number, then carry out DCI addressing according to the new E-PDCCH addressing configured information in the descending sub frame.
8. device according to claim 7, it is characterised in that also include：
Addressing information feedback module, for being sent out after receiving the new E-PDCCH addressing configured informations to evolved base station eNB
HARQ feedback is sent, so that the eNB confirms UE addressing signaling updates, node time instance is updated to receiving the HARQ in high-level signaling
The terminal of feedback is adopted using the new E-PDCCH addressing configured information scheduling DCI to the terminal for not receiving the HARQ feedback
With old E-PDCCH addressing configured information scheduling DCI.
9. device according to claim 7, it is characterised in that the Downlink Control Information addressed module is according to described new
E-PDCCH addressing configured information carries out DCI addressing in the descending sub frame, if it succeeds, in next addressing signaling more
Before the new node moment arrives, sought according to progress DCI in the new E-PDCCH addressing configured information in each of the lower row subframe
Location；If it fails, then continuing the E-PDCCH addressing configured information progress DCI addressing not updated according to original, in this case
If it succeeds, before next addressing signaling update node time instance arrives, the E-PDCCH's not updated according to the original
Address configured information and DCI addressing is carried out to TTI.
10. device according to claim 7, it is characterised in that the high-rise addressing signaling update indicated number of the PCFICH
Different values can be configured by some cycles, but the high-rise addressing signaling update indicated number of the configuration is in non-instruction more new node
In TTI without using.
11. device according to claim 10, it is characterised in that eNB configuration PCFICH recessiveness indicates the renewal TTI moment,
When early version terminal is more, the high-rise addressing signaling update indicated number of the PCFICH is set as 0；When early version terminal is less
When, the high-rise addressing signaling update indicated number of the PCFICH is set as 2.
12. a kind of terminal, it is characterised in that including as described in any one in claim 7-11 based on E-PDCCH channels
Downlink Control Information acquisition device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310178463.2A CN104159302B (en) | 2013-05-15 | 2013-05-15 | Downlink Control Information acquisition methods, device and terminal based on E PDCCH channels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310178463.2A CN104159302B (en) | 2013-05-15 | 2013-05-15 | Downlink Control Information acquisition methods, device and terminal based on E PDCCH channels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104159302A CN104159302A (en) | 2014-11-19 |
| CN104159302B true CN104159302B (en) | 2017-08-08 |
Family
ID=51884685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310178463.2A Active CN104159302B (en) | 2013-05-15 | 2013-05-15 | Downlink Control Information acquisition methods, device and terminal based on E PDCCH channels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104159302B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107113796A (en) * | 2015-08-21 | 2017-08-29 | 华为技术有限公司 | Resource allocation, instruction and identification resource type, the method and device for receiving data |
| JP6604524B2 (en) * | 2015-12-18 | 2019-11-13 | オッポ広東移動通信有限公司 | Method and terminal for data transmission |
| CN108024340B (en) * | 2016-11-03 | 2022-02-11 | 华为技术有限公司 | Control information detection method, control information sending method and control information sending equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102422584A (en) * | 2009-05-04 | 2012-04-18 | 摩托罗拉移动公司 | Control channel provisioning and signaling |
| WO2013017178A1 (en) * | 2011-07-29 | 2013-02-07 | Fujitsu Limited | Control channel for wireless communication |
| CN103037510A (en) * | 2011-09-30 | 2013-04-10 | 中国移动通信集团公司 | Indicating method, system and device for enhancing downlink control channel resources |
-
2013
- 2013-05-15 CN CN201310178463.2A patent/CN104159302B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102422584A (en) * | 2009-05-04 | 2012-04-18 | 摩托罗拉移动公司 | Control channel provisioning and signaling |
| WO2013017178A1 (en) * | 2011-07-29 | 2013-02-07 | Fujitsu Limited | Control channel for wireless communication |
| CN103037510A (en) * | 2011-09-30 | 2013-04-10 | 中国移动通信集团公司 | Indicating method, system and device for enhancing downlink control channel resources |
Non-Patent Citations (1)
| Title |
|---|
| Discussion on eREG/eCCE definition;LG Electronics;《3GPP TSG RAN WG1 Meeting #69 R1-122308》;20120525;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104159302A (en) | 2014-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104769878B (en) | Distributed in a communications system for E PDCCH PUCCH resource | |
| CN105519216B (en) | The method and device thereof of resource allocation for D2D communication | |
| CN106063356B (en) | The method and apparatus of the resource pool of the assignment signal communicated for dispatching direct equipment to equipment are established in wireless communication system | |
| KR101492380B1 (en) | Method and device for allocating search space of control channel in subframe | |
| CN104012016B (en) | Method and apparatus transmitting and receiving control information in wireless communication system | |
| US10159084B2 (en) | Resource scheduling method and apparatus | |
| RU2563583C2 (en) | Method and apparatus for transmitting and receiving reference signal in wireless communication system | |
| CN102158978B (en) | A kind of processing method of Downlink Control Information and system | |
| CN104272608B (en) | Method and its device for dynamically distributes Radio Resource in a wireless communication system | |
| CN102325377B (en) | Resource scheduling indication method and device | |
| US20140348077A1 (en) | Control channel design for new carrier type (nct) | |
| CN103037511B (en) | A kind of indicating means, system and equipment strengthening down control channel resources | |
| CN102869049B (en) | Method for transmitting control channel indication information, base station and user equipment | |
| CN110024442A (en) | The method and user equipment of minimum system information are provided in a wireless communication system | |
| CN110249676A (en) | Indicate the method and its equipment of camp-on resource information | |
| CN104823475B (en) | The method and its device of downlink control channel are monitored in a wireless communication system | |
| US20140348090A1 (en) | Method of providing control information for user equipment in lte communication system | |
| CN103107872B (en) | Strengthen method and the device thereof of the transmission of descending ack/nack signal | |
| CN104488344A (en) | Lte enhancements for small packet transmissions | |
| US11382089B2 (en) | Information transmission method and device, storage medium and electronic device | |
| CN109964466B (en) | Parameter set dependent downlink control channel mapping | |
| CN104955155A (en) | PDSCH data receiving method, transmitting method, user equipment and eNB | |
| CN112106414A (en) | Paging occasion start determination | |
| KR20140126298A (en) | Method by which terminals in wireless communication systems receive downlink control channels and apparatus for same | |
| CN104521309A (en) | Method for transmitting and receiving uplink signal on basis of interference measurement in base station cooperative wireless communication system and device for same |
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 |