CN105991249B - A method of for feeding back UCI in enhanced carrier aggregation system - Google Patents
A method of for feeding back UCI in enhanced carrier aggregation system Download PDFInfo
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Abstract
The present invention provides a kind of in enhanced carrier aggregation system for feeding back the method for UCI, wherein the method for user terminal is the following steps are included: obtain carrier wave grouping information from base station end, so that it is determined that multiple carrier wave sets；Use the UCI of each carrier wave in PUCCH the and/or PUSCH transmission carrier wave set in specific carriers in the carrier wave set.The method of base station end to obtain multiple carrier wave sets, and generates corresponding carrier wave grouping information the following steps are included: to multiple carrier waves implementation grouping that needs are polymerize；Specific carriers are specified for each carrier wave set, and generate specific carriers information；The carrier wave grouping information and the specific carriers information are sent to user terminal.In addition, the present invention also provides another kinds in enhanced carrier aggregation system for feeding back the method for UCI.
Description
Technical field
The present invention relates to wireless communication fields, in particular it relates to which a kind of be used in enhanced carrier aggregation system
Feed back the method for UCI.
Background technique
The new job of the enhanced carrier aggregation more than 5 carrier waves is had approved in RAN#66 meeting.Currently, to passing through
Unwarranted frequency spectrum produces very big interest to expand LTE in occupancy 5Gz frequency range.In addition to widely used in LTE
5GHz frequency range, in other frequency ranges, such as 3.5GHz, dispensing make the carrier wave that can have more than 1 in a frequency range.And
And as the carrier wave polymerization with multiple 3-DL carrier waves polymerization work item requires specification (especially down direction) to be completed, with
And the configuration of multiple 4-DL carrier wave polymerizations is discussed, RAN4 is just running smooth recently.As it is indicated above, more than 5 carrier waves
Carrier wave polymerization extension provide a chance with more effectively utilize available frequency spectrum or the communication resource.
In carrier wave polymerization Rel-10/11, the UCI feedback of up to 5 carrier waves has been enhanced, such as PDSCH
HARQ introduces the PUCCH format 1b with the channel selection for maximum 4bit ACK/NACK, and is used for maximum 20bit
ACK/NACK PUCCH format 3.For the feedback of the periodical CQI of multicarrier, TDM mode is introduced into hold in different subframes
Carry the periodical CQI of different carrier waves.However in order to support up to 32 carrier waves, if still following PUCCH is only located at main plot
On, existing scheme is difficult to carry the UCI sharply increased on a carrier wave.In dual link Rel-12, support for MCG and
Double PUCCH of SCG, however, UCI, which feeds back problem in short supply, to be solved even if supporting double PUCCH in carrier wave polymerization enhancing.
Therefore, in the present invention, it is intended to recommend some schemes with the UCI feedback problem more than solving.
Summary of the invention
In view of above-mentioned technical problem, it is necessary to provide a kind of method for being used to feed back UCI in enhanced carrier aggregation system.
In order to achieve the object of the present invention, the first aspect of the present invention provides a kind of use in enhanced carrier aggregation system
For feeding back the method for UCI in the end of family, wherein the following steps are included: carrier wave grouping information is obtained from base station end, so that it is determined that more
A carrier wave set；Use each load in PUCCH the and/or PUSCH transmission carrier wave set in specific carriers in the carrier wave set
The UCI of wave.
Particularly, when in the carrier wave set including the carrier wave of main plot, the PUCCH on the carrier wave of the main plot is used
And/or in the PUSCH transmission carrier wave set in the specific carriers each carrier wave UCI.
Particularly, when in the carrier wave set not including the carrier wave of main plot, the specific carriers of the group are specified by base station.
Particularly, the number of carrier wave in carrier wave set described in every group is up to 5 or 8.
Particularly, the cross-carrier scheduling between different carrier wave sets is not allowed to.
The second aspect of the present invention provide it is a kind of in the base station end of enhanced carrier aggregation system for assisting user terminal
Feed back the method for UCI, wherein the following steps are included: the multiple carrier waves being polymerize to needs implement grouping, to obtain multiple carrier waves
Group, and generate corresponding carrier wave grouping information；Specific carriers are specified for each carrier wave set, and generate specific carriers information；
The carrier wave grouping information and the specific carriers information are sent to user terminal.
The third aspect of the present invention provides a kind of side for being used to feed back UCI in the user terminal of enhanced carrier aggregation system
Method, wherein the following steps are included:-when feeding back HARQ signaling, implement: scheme one: obtaining first carrier grouping letter from base station end
Breath, so that it is determined that multiple carrier wave sets；Confirm downlink transfer on each carrier wave in the carrier wave set whether transmission success, if
All succeed, then the feeding back ACK signaling in the HARQ for corresponding to the group, if not all succeeding, is then corresponding to the group
NACK signaling is fed back in HARQ；The HARQ signaling feedback of each carrier wave set to the base station end；Or scheme two: from base
Stand end obtain the second carrier wave grouping information, so that it is determined that multiple carrier wave sets；Believed by way of frequency division multiplexing in PUCCH/PUSCH
Multiple HARQ signaling groups are transmitted in road, wherein the HARQ comprising all carrier waves in corresponding carrier wave set in each HARQ signaling group is anti-
Feedback.
Particularly, when implementing the scheme two: transmitting format used in the PUCCH signaling of the HARQ signaling group is
PUCCH 1b cs or PUCCH 3.
Particularly, when implement the scheme two and when multiple PUCCH signalings transmitted using continuous resource block it is described
When multiple HARQ signaling groups, further comprises the steps of: from the base station end and obtain resource block used in the multiple PUCCH signaling
Initial position；On the initial position and later the resource block on continuous position is sequentially allocated to the multiple PUCCH
Signaling.
Particularly, when implement the scheme two and when multiple PUCCH signalings using discrete resource block to transmit
When stating multiple HARQ signaling groups, further includes: believed using the PUSCH for the carrier wave for carrying the multiple PUCCH signaling in existing standard
The TPC field of the corresponding UL DCI of road transmission indicates the power control of the PUCCH channel, is passed using other PUSCH channels
The money that PUCCH signaling corresponding to carrier wave set where other carrier waves are transmitted in the TPC field instruction of defeated UL DCI is assigned
The position of source block.
Particularly ,-and when feedback cycle CSI signaling, implement: option A: PUCCH signaling uses 3 format transmission of PUCCH
The periodicity CSI signaling or option b: third carrier wave grouping information is obtained from base station end, so that it is determined that multiple carrier wave sets；
Send each group periodicity CSI signaling group in the specific sub-frame of PUCCH/PUSCH channel respectively by way of frequency division multiplexing,
Described in signaling group include corresponding carrier wave set in all carrier waves periodical CSI feedback.
Particularly, when implementing the option b: lattice used in the PUCCH signaling of the transmission periodicity CSI signaling group
Formula is PUCCH 2 or PUCCH 3.
Particularly ,-and when feeding back aperiodicity CSI signaling, embodiment I: obtain triggering aperiodicity CSI's from base station
Control signaling；The control signaling is confirmed, to determine the aperiodicity CSI for needing to feed back which carrier wave；It is sent out by PUSCH channel
Send the aperiodicity CSI signaling for needing to feed back.
Particularly, the control signaling for triggering aperiodicity CSI is located in the CSI request field of DCI 0/4, wherein institute
CSI request field is stated at least 3bit or 4bit.
Particularly, the scheme I, which is further comprised the steps of: from base station end, obtains the 4th carrier wave grouping information, so that it is determined that multiple
Trigger the carrier wave set of multiple carrier waves of aperiodicity CSI feedback；Respectively in the spy of PUSCH channel by way of frequency division multiplexing
Each group aperiodicity CSI feedback group is sent in stator frame, wherein the aperiodicity CSI feedback group includes in corresponding carrier wave set
The periodical CSI feedback of all carrier waves.
The fourth aspect of the present invention provide it is a kind of in the base station end of enhanced carrier aggregation system for assisting user terminal
Feed back the method for UCI, wherein the following steps are included:-when assisting client feeds back HARQ signaling: scheme one: according to transmission
The bit number for the HARQ signaling that the transfer resource of HARQ signaling can carry is implemented to be grouped to the multiple carrier wave, multiple to obtain
Carrier wave set, and generate corresponding first carrier grouping information；The first carrier grouping information is sent to user terminal；Reception pair
It should be in the HARQ signaling of each carrier wave set；Or scheme two: institute is limited according to the format of each PUCCH signaling or PUSCH channel
The bit number for the HARQ signaling that can be carried implements grouping to the multiple carrier waves for needing to be polymerize, to obtain multiple carrier wave sets,
And generate corresponding second carrier wave grouping information；The second carrier wave grouping information is sent to user terminal；It receives and corresponds to respectively
The HARQ group signaling of a carrier wave set；When assisting client feeds back periodicity CSI signaling: according to the every of PUCCH/PUSCH channel
The number for the periodical CSI that a subframe can carry implements grouping to the multiple carrier waves for needing to be polymerize, multiple to obtain
Carrier wave set, and generate corresponding third carrier wave grouping information；The third carrier wave grouping information is sent to user terminal；Reception pair
It should be in the periodical CSI group signaling of each carrier wave set；When assisting client feeds back aperiodicity CSI signaling: according to PUSCH
The number for the aperiodicity CSI that each subframe of channel can carry, it is real to the multiple carrier waves for triggering aperiodicity CSI feedback
Grouping is applied, to obtain multiple carrier wave sets, and generates corresponding 4th carrier wave grouping information；The 4th carrier wave grouping information is sent out
It send to user terminal；Receive the aperiodicity CSI group signaling for corresponding to each carrier wave set.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent:
Fig. 1 shows a kind of process for being used to feed back UCI in enhanced carrier aggregation system proposed according to the present invention
Schematic diagram；And
Fig. 2 shows another mistakes for being used to feed back UCI in enhanced carrier aggregation system proposed according to the present invention
Journey schematic diagram.
Specific embodiment
In the following detailed description of the preferred embodiment, reference is constituted to the appended attached drawing of present invention a part.Institute
Attached attached drawing, which has been illustrated by way of example, can be realized specific embodiment.Exemplary embodiment is not intended to
Exhaustive all embodiments according to the present invention.It is appreciated that without departing from the scope of the present invention, can use other
Embodiment can also carry out the modification of structure or logic.Therefore, it is below specific descriptions and it is unrestricted, and this
The range of invention is defined by the claims appended hereto.In addition, although the step of method is described in specification in a particular order
Suddenly, but this does not require that or implies must execute these operations in this particular order, or have to carry out whole institutes
The operation shown just is able to achieve desired as a result, on the contrary, the step of describing can change and execute sequence.Additionally or alternatively, may be used
To omit certain steps, multiple steps are merged into a step and are executed, and/or a step is decomposed into multiple steps and is held
Row.
The UCI for the multiple carrier waves being polymerize in existing doubly-linked welding system can be believed by one or two PUCCH/PUSCH
It is fed back to base station end in road.However in the state of carrier aggregation of enhancing, the number of carrier wave being polymerize may be up to 32, one or two
A PUCCH/PUSCH channel can not carry the transmission of the data volume of the UCI of multiple (being greater than 5 or 10) carrier waves simultaneously.In order to
The UCI of each carrier wave is effectively fed back in the carrier wave polymerization of enhancing to base station end, the invention proposes following two schemes to solve
Certainly above-mentioned technical problem.
Scheme 1:
Continuity in specification in order to guarantee existing carrier wave polymerization and dual link about UCI Feedback Rule, scheme 1 is still
The feedback mechanism of UCI used in some existing carrier wave polymerizations and dual link has been continued to use, and proposed in conjunction with this programme
Technology contents enable scheme proposed by the invention to provide the anti-of effectively UCI for the carrier wave polymerization of up to 32 carrier waves
Feedback.Therefore, unless mutually conflicting with the technical solution in the present invention, otherwise in the specification of the polymerization of existing carrier wave and dual link about
UCI Feedback Rule and mechanism are also applicable in scheme 1.
The basic ideas of this programme are multiple carrier waves to be divided into several carrier wave sets, each carrier wave set uses a PUCCH
And/or PUSCH channel transmits the UCI of carrier wave in the group, to realize feeds back UCI in enhanced carrier aggregation system.
For example, if a PUCCH channel maximum can be used for the transmission of the UCI of 5 carrier waves, for 32 carrier waves
Carrier aggregation system, only by one or two PUCCH channels be obviously unable to complete 32 carrier waves UCI feedback, according to us
Scheme, this 32 carrier waves can be divided into 7 groups, there is most 5 carrier waves in every group by we, then each group pass through correspond to each group
PUCCH and/or PUSCH channel come the UCI of from all carrier waves to base station feedback each group, the number of carrier wave for being included by each group
Less than or equal to 5, therefore the PUCCH/PUSCH channel of each group can feed back the UCI signaling of each group to base station end.
We will be described in detail the program 1 below.As shown in Figure 1, Fig. 1 show it is a kind of proposed according to the present invention
For feeding back the method (scheme 1) of UCI in enhanced carrier aggregation system.
In step S01,102 pairs of the base station end multiple carrier waves for needing to be polymerize implement grouping, to obtain multiple carrier wave sets.
The quantity of the UCI that the quantity of carrier wave can be carried based on PUCCH/PUSCH channel in each carrier wave set determines, if often
A PUCCH/PUSCH channel can carry the UCI of 4 carrier waves, then the number of carrier wave in each carrier wave set is up to 4.It is being grouped
Later, base station can generate corresponding carrier wave grouping information, to indicate which carrier wave is dispensed on one group.
In a preferred embodiment, it is contemplated that backward compatibility, the number of carrier wave in the carrier wave set are up to 5
It is a.In another preferred embodiment, the number of carrier wave in the carrier wave set is up to 8, to be compatible with the CIF letter of 3bit
It enables.
In step S02, base station end 102 is that each carrier wave set determines specific carriers, wherein the specific carriers are that its institute is right
The carrier wave in carrier wave set answered.The PUCCH/PUSCH channel of the UCI of all carrier waves is located in the carrier wave set in transmission carrier wave set
It come which of designated carrier group/a little carrier wave is specific carriers by base station end 102 in specific carriers.When UCI is simultaneously by PUCCH
When channel and PUSCH transmission, it is possible to specify one or two specific carriers, it may be assumed that the PUCCH channel for transmitting UCI is located at
Specific carriers and the specific carriers that are located at of PUSCH channel of transmission UCI can be same carrier wave, be also possible to different loads
Wave.It is noted that if carrier wave and UCI in carrier wave set including main plot are transmitted by PUCCH channel, it should
The carrier wave of main plot is exactly specific carriers.After having determined corresponding specific carriers for each carrier wave set, base station can generate phase
The specific carriers information answered is the specific carriers of the group with which carrier wave in indication carrier wave group.
In step S03, the carrier wave grouping information and the specific carriers information are sent to user terminal by base station end 102
104。
In step S04, user terminal 104 determines which carrier wave is divided into one according to the carrier wave grouping information received
Group, and the specific carriers in each group carrier wave set are determined according to specific carriers information.
In step S05, user terminal 104 is passed using the PUCCH/PUSCH channel in the specific carriers in each carrier wave set
The UCI of carrier wave in defeated each carrier wave set.It should be pointed out that the cross-carrier scheduling between carrier wave sets different in this programme is not
It is allowed to, because this still will cause the shortage of UCI feedback resources.Base station end 104 is from the specific carriers of each carrier wave set of correspondence
The UCI of each group carrier wave is obtained, and parses the UCI of each carrier wave in each carrier wave set.
The PUCCH/PUSCH channel in carrier wave set in specific carriers has been used to transmit UCI in scheme 1, it may be assumed that originally
It may be not used for transmitting on the carrier wave of UCI and transmit UCI to solve aforementioned mentioned technical problem.Different from scheme 1, this hair
Bright another proposed scheme (scheme 2) transmitting UCI using new carrier wave, still in the polymerization of current carrier wave and
The UCI is transmitted on the carrier wave of the transmission UCI of defined in dual link specification.It is by enhancing PUCCH/PUSCH channel
The feedback mechanism of the communication resource and HARQ/CSI increases feedback capacity.
Scheme 2:
We will be described in detail the program 2 below.As shown in Fig. 2, proposed according to the present invention Fig. 2 shows another kind
For feeding back the method for UCI in enhanced carrier aggregation system.
It include HARQ signaling and CSI (periodic CSI or acyclic CSI) signaling in UCI.For in enhancing carrier wave
The case where feeding back HARQ signaling to base station end in paradigmatic system, it is proposed that following two scheme:
Scheme one:
In step P01, multiple carrier waves that 102 pairs of base station needs to be polymerize implement grouping, to obtain multiple carrier wave sets.It carries
The quantity of wave group can be determined according to the bit number of HARQ signaling that the transfer resource of original transmission HARQ signaling can carry.
For example, needs can be gathered if the transfer resource of original transmission HARQ signaling can be 5 carrier-wave transmission HARQ signalings
The multiple carrier waves closed are divided into 5 groups, then implement and operate by the HARQ to each carrier wave in each carrier wave set in user terminal, thus
So that each carrier wave set shares the resource of a HARQ signaling, the feedback quantity for increasing HARQ signaling is avoided.After the grouping, base station
Corresponding first carrier grouping information can be generated, to indicate which carrier wave is dispensed on one group.
In step P02, first carrier grouping information is sent to user terminal 104 by base station end 102.
In step P03, user terminal 104 obtains the first carrier grouping information with each carrier wave set of determination, and determines each
The corresponding HARQ feedback signaling of a carrier wave set.Wherein, the corresponding HARQ feedback signaling of each carrier wave set is according to following rule (with behaviour
Make) determine: the downlink transfer on each carrier wave in confirmation carrier wave set whether transmission success, if all succeeded, right
In the HARQ of the group feeding back ACK signaling NACK then should be fed back in the HARQ for corresponding to the group and is believed if not all succeeding
It enables.
In step P04, user terminal 104 feeds back each load to base station end 102 on the transfer resource of transmission HARQ signaling
The HARQ feedback signaling of wave group.Base station end 104 just can know that institute in each carrier wave set after receiving each group HARQ feedback signaling
Having the downlink transfer on carrier wave, whether transmission success if receiving NACK signaling illustrates have under carrier wave in this group of carrier wave set
Row transmission failure, then base station end 102 can retransmit the downlink transfer of all carrier waves in this group of carrier wave set.
It is easy to implement although scheme one does not generate large effect to existing HARQ transmission mechanism, it can waste and be
The retransmission resource of system, in this regard, the invention also provides schemes two for feeding back in enhanced carrier aggregation system to base station end
HARQ signaling.
Scheme two:
The main thought of scheme two is, to being used for transmission UCI's on PUCCH/PUSCH channel by way of frequency division multiplexing
Resource is extended, so that more HARQ signalings can be transmitted in PUCCH/PUSCH channel, to meet multiple carrier waves
The feedback requirements of HARQ.
In step Q01, base station end 102 is according to each PUCCH signaling (or format of PUSCH channel in PUCCH channel
Limitation) the bit number of HARQ signaling that can carry, the multiple carrier waves implementation being polymerize to the needs is grouped, multiple to obtain
Carrier wave set.For example, if the HARQ letter of 5 carrier waves can be carried in a PUCCH signaling (or format limitation of PUSCH channel)
The bit number of order, then the number of carrier wave in carrier wave set at most must not exceed 5.After the grouping, base station can generate corresponding
Nd carrier grouping information, to indicate which carrier wave is dispensed on one group to user terminal 104.All carrier waves in each carrier wave set
HARQ signaling will be transmitted to base station end from user terminal 104 by a PUCCH signaling (or the format of PUSCH channel limits)
102.Herein, the HARQ signaling of all carrier waves is referred to as HARQ signaling group in a carrier wave set.
It further include step Q02 when transmitting the HARQ signaling of each carrier wave using PUCCH channel.Base station end need to
User terminal is designated as the position for the transfer resource that multiple PUCCH signalings in PUCCH channel are distributed.Therefore, in step Q02
In, base station end 102 is the position that user terminal 104 determines transmission resource block.
When multiple PUCCH signalings in PUCCH channel use continuous resource block, base station end only needs to determine starting
Resource block position, and user terminal 104 is sent in step Q03.When multiple PUCCH signalings in PUCCH channel use
Be discrete resource block when, base station will use the PUSCH that the carrier wave of the multiple PUCCH signaling is carried in existing standard believe
The TPC field of the corresponding UL DCI of road transmission indicates the power control of the PUCCH channel, is passed using other PUSCH channels
The money that PUCCH signaling corresponding to carrier wave set where other carrier waves are transmitted in the TPC field instruction of defeated UL DCI is assigned
The position of source block.
In step Q03, the location information of second packet information and resource block is sent to user terminal 104 by base station end 102.
In step Q04, user terminal 104 is in each PUCCH signaling by way of frequency division multiplexing in PUCCH channel
Or each HARQ signaling group is transmitted in PUSCH channel, wherein comprising owning in corresponding carrier wave set in each HARQ signaling group
The HARQ feedback of carrier wave.In a specific embodiment, format used in the PUCCH signaling of the HARQ signaling group is transmitted
For PUCCH 1b cs or PUCCH 3.
The case where in enhanced carrier aggregation system to the CSI signaling of base station end feedback cycle, it is proposed that with
Lower two schemes:
Option A: PUCCH signaling transmits the periodicity CSI signaling using 3 format of PUCCH.
The program is although easy to implement, but unobvious to the promotion effect of transmission capacity, thus we also propose it is another
A scheme (option b).
Option b:
The main thought of option b is to be used for transmission the money of UCI to PUCCH/PUSCH channel by way of frequency division multiplexing
Source is extended, so that more feedback signalings can be transmitted in PUCCH/PUSCH channel, to meet the week of multiple carrier waves
The feedback requirements of phase property CSI.
It is right according to the number for the periodical CSI that each subframe of PUCCH/PUSCH channel can carry in step R01
The multiple carrier waves for needing to be polymerize implement grouping, to obtain multiple carrier wave sets.For example, if PUCCH/PUSCH channel
One subframe can carry the CSI signaling of 5 carrier waves, then the number of carrier wave in carrier wave set at most must not exceed 5.It is being grouped
Later, base station can generate corresponding third carrier wave grouping information, to indicate which carrier wave is dispensed on one group to user terminal 104.
In each carrier wave set the periodical CSI signaling of all carrier waves will by the specific sub-frame of PUCCH/PUSCH channel by from
Family end 104 is transmitted to base station end 102.Herein, the periodical CSI signaling of all carrier waves is referred to as the period in a carrier wave set
Property CSI signaling group.
In step R02, third grouping information is sent to user terminal 104 by base station end 102.
In step R03, user terminal 104 is by way of frequency division multiplexing respectively in the specific son of PUCCH/PUSCH channel
Each group periodicity CSI signaling group is sent on frame, wherein the signaling group includes the periodicity of all carrier waves in corresponding carrier wave set
CSI feedback.In this scenario due to having used FDM to utilize the frequency domain resource being not used by, so that in each subframe
More feedback signalings can be transmitted on PUCCH/PUSCH channel.In a specific embodiment, the periodicity is transmitted
Format used in the PUCCH signaling of CSI signaling group is PUCCH 2 or PUCCH 3.
The case where for feeding back acyclic CSI signaling to base station end in enhanced carrier aggregation system, it is proposed that
Following scheme:
In step T01, base station end 102 generates control signaling, which is used to indicate which is carried to user terminal 104
Wave needs to feed back aperiodicity CSI signaling, wherein the control signaling of triggering aperiodicity CSI is located at the CSI of DCI 0/4
In request field.In a preferred embodiment, which has at least 3bit.Preferably implement at another
In example, which has at least 4bit.
In step T02, base station end 102 sends the control signaling with triggering aperiodicity CSI to user terminal 104
DCI 0/4。
In step T03, user terminal 104 obtains the control signaling of triggering aperiodicity CSI from base station, and confirms the control
Signaling is with the determining aperiodicity CSI for needing to feed back which carrier wave.
In step T04, user terminal 104 sends the non-week for needing to feed back by the PUSCH channel in specific sub-frame
Phase property CSI signaling.
When multiple carrier waves trigger request simultaneously, PUSCH channel in specific sub-frame possibly can not simultaneous transmission it is multiple non-
Periodical CSI signaling come meet feedback aperiodicity CSI signaling the needs of.To this, we equally can implement to be grouped to carrier wave,
And the transfer resource of PUSCH channel is extended by way of frequency division multiplexing, to utilize the frequency domain resource being not used by, from
And make that more aperiodicity CSI signalings can be transmitted in PUSCH channel, with meet multiple carrier waves periodical CSI it is anti-
Feedback demand.Correspondingly, we can increase the following contents in each step of above scheme:
In step T01, further includes: according to for the aperiodicity CSI that each subframe of PUSCH channel can carry
Number implements grouping to the multiple carrier waves for triggering aperiodicity CSI feedback, to obtain multiple carrier wave sets.For example, if PUSCH
One subframe of channel can carry the aperiodicity CSI signaling of 5 carrier waves, then the number of carrier wave in carrier wave set at most must not
More than 5.After the grouping, base station can generate corresponding 4th carrier wave grouping information, which carrier wave indicated to user terminal 104
It is dispensed on one group.The aperiodicity CSI signaling of all carrier waves will pass through the specific sub-frame of PUSCH channel in each carrier wave set
On be transmitted to base station end 102 from user terminal 104.Herein, in a carrier wave set all carrier waves aperiodicity CSI signaling
Referred to as periodicity CSI signaling group.
In step T02, further includes: the 4th grouping information is sent to user terminal 104 by base station end 102.
In step T04, user terminal 104 is sent out in the specific sub-frame of PUSCH channel respectively by way of frequency division multiplexing
Each group aperiodicity CSI feedback group is sent, wherein the aperiodicity CSI feedback group includes all carrier waves in corresponding carrier wave set
Periodical CSI feedback.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
How from the point of view of, the present embodiments are to be considered as illustrative and not restrictive.In addition, it will be evident that one word of " comprising " not
Exclude other elements and steps, and wording "one" be not excluded for plural number.The multiple element stated in device claim can also
To be implemented by one element.The first, the second equal words are used to indicate names, and are not indicated any particular order.
Claims (10)
1. a kind of method for being used to feed back UCI in the user terminal of enhanced carrier aggregation system, wherein the following steps are included:
When feeding back HARQ signaling, implement:
Scheme one:
First carrier grouping information is obtained from base station end, so that it is determined that multiple carrier wave sets；
Confirm downlink transfer on each carrier wave in the carrier wave set whether transmission success, if all succeeded, in correspondence
The feeding back ACK signaling in the HARQ of the group, if not all succeeding, then feedback NACK believes in the HARQ for corresponding to the group
It enables；The HARQ signaling feedback of each carrier wave set to the base station end；Or
Scheme two:
The second carrier wave grouping information is obtained from base station end, so that it is determined that multiple carrier wave sets；
Multiple HARQ signaling groups are transmitted in PUCCH/PUSCH channel by way of frequency division multiplexing, wherein each HARQ signaling
HARQ feedback comprising all carrier waves in corresponding carrier wave set in group.
2. according to the method described in claim 1, wherein, when implementing the scheme two:
Transmitting format used in the PUCCH signaling of the HARQ signaling group is PUCCH 1b cs or PUCCH 3.
3. according to the method described in claim 2, wherein, connecting when the implementation scheme two and when multiple PUCCH signalings use
Continuous resource block when transmitting the multiple HARQ signaling group, further comprises the steps of:
The initial position of resource block used in the multiple PUCCH signaling is obtained from the base station end；
On the initial position and later the resource block on continuous position is sequentially allocated to the multiple PUCCH signaling.
4. according to the method described in claim 2, wherein, when implement the scheme two and when multiple PUCCH signalings use it is non-
Continuous resource block is come when transmitting the multiple HARQ signaling group, further includes:
Use the corresponding UL DCI of the PUSCH transmission of the carrier wave that the multiple PUCCH signaling is carried in existing standard
TPC field indicates the power control of the PUCCH channel, is indicated using the TPC field of the UL DCI of other PUSCH transmissions
The position for the resource block that PUCCH signaling corresponding to carrier wave set where transmitting other carrier waves is assigned.
5. according to the method described in claim 1, wherein,
When feedback cycle CSI signaling, implement:
Option A:
PUCCH signaling uses periodicity CSI signaling described in 3 format transmission of PUCCH；Or
Option b:
Third carrier wave grouping information is obtained from base station end, so that it is determined that multiple carrier wave sets；
Send each group periodicity CSI signaling in the specific sub-frame of PUCCH/PUSCH channel respectively by way of frequency division multiplexing
Group, wherein the signaling group includes the periodical CSI feedback of all carrier waves in corresponding carrier wave set.
6. according to the method described in claim 5, wherein, when implementing the option b:
Transmitting format used in the PUCCH signaling of the periodicity CSI signaling group is PUCCH 2 or PUCCH 3.
7. according to the method described in claim 1, wherein,
When feeding back aperiodicity CSI signaling, embodiment I:
The control signaling of triggering aperiodicity CSI is obtained from base station；
The control signaling is confirmed, to determine the aperiodicity CSI for needing to feed back which carrier wave；
The aperiodicity CSI signaling for needing to feed back is sent by PUSCH channel.
8. according to the method described in claim 7, wherein, the control signaling of triggering aperiodicity CSI is located at DCI's 0/4
In CSI request field, wherein the CSI request field has at least 3bit or 4bit.
9. according to the method described in claim 8, wherein, the scheme I is further comprised the steps of:
The 4th carrier wave grouping information is obtained from base station end, so that it is determined that multiple multiple carrier waves for triggering aperiodicity CSI feedback
Carrier wave set；
Send each group aperiodicity CSI feedback group in the specific sub-frame of PUSCH channel respectively by way of frequency division multiplexing,
Described in aperiodicity CSI feedback group include corresponding carrier wave set in all carrier waves periodical CSI feedback.
10. a kind of method in the base station end of enhanced carrier aggregation system for assisting client feeds back UCI, wherein including
Following steps:
When assisting client feeds back HARQ signaling:
Scheme one:
According to the bit number for the HARQ signaling that the transfer resource of transmission HARQ signaling can carry, the multiple carrier wave is implemented to divide
Group to obtain multiple carrier wave sets, and generates corresponding first carrier grouping information；
The first carrier grouping information is sent to user terminal；
Receive the HARQ signaling for corresponding to each carrier wave set；Or
Scheme two:
According to the bit number for the HARQ signaling that the limitation of the format of each PUCCH signaling or PUSCH channel can carry, to the need
The multiple carrier waves to be polymerize implement grouping, to obtain multiple carrier wave sets, and generate corresponding second carrier wave grouping information；
The second carrier wave grouping information is sent to user terminal；
Receive the HARQ group signaling for corresponding to each carrier wave set；
When assisting client feeds back periodicity CSI signaling:
According to the number for the periodical CSI that each subframe of PUCCH/PUSCH channel can carry, the needs are polymerize
Multiple carrier waves implement grouping, to obtain multiple carrier wave sets, and generate corresponding third carrier wave grouping information；
The third carrier wave grouping information is sent to user terminal；
Receive the periodical CSI group signaling for corresponding to each carrier wave set；
When assisting client feeds back aperiodicity CSI signaling:
According to the number for the aperiodicity CSI that each subframe of PUSCH channel can carry, to triggering, aperiodicity CSI is anti-
Multiple carrier waves of feedback implement grouping, to obtain multiple carrier wave sets, and generate corresponding 4th carrier wave grouping information；
The 4th carrier wave grouping information is sent to user terminal；
Receive the aperiodicity CSI group signaling for corresponding to each carrier wave set.
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| CN109152018B (en) | 2017-06-16 | 2021-02-09 | 华为技术有限公司 | Carrier grouping method and device |
| US10827516B2 (en) * | 2018-01-19 | 2020-11-03 | Qualcomm Incorporated | Resource splitting among different types of control information and uplink data for a transmission on an uplink shared channel |
| CN111418177B (en) * | 2018-04-04 | 2021-12-28 | Oppo广东移动通信有限公司 | Reliable transmission method and related product |
| CN110808819B (en) * | 2018-08-06 | 2021-03-30 | 华为技术有限公司 | Information transmission method and device |
| WO2020037457A1 (en) | 2018-08-20 | 2020-02-27 | Qualcomm Incorporated | Synchronized scheduling for carrier aggregation |
| CN111162874B (en) * | 2019-12-27 | 2022-11-04 | 展讯通信（上海）有限公司 | Data transmission method and device of ad hoc network system, storage medium and terminal |
| CN115039476A (en) * | 2020-02-07 | 2022-09-09 | 高通股份有限公司 | Uplink control information multiplexing for dynamic spectrum sharing |
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