CN105871528A - HARQ feedback method and device, sub-frame configuration method and device, terminal and base station - Google Patents
HARQ feedback method and device, sub-frame configuration method and device, terminal and base station Download PDFInfo
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- CN105871528A CN105871528A CN201610186650.9A CN201610186650A CN105871528A CN 105871528 A CN105871528 A CN 105871528A CN 201610186650 A CN201610186650 A CN 201610186650A CN 105871528 A CN105871528 A CN 105871528A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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Abstract
The invention provides a HARQ feedback method and device based on a flexible duplex FDD system, a sub-frame configuration method and device, a terminal and a base station. The HARQ feedback method and device based on the flexible duplex FDD system comprises the following steps: receiving downlink data sent by a base station on a downlink sub-frame m, wherein m is the sub-frame serial number; judging whether the HARQ feedback sub-frame corresponding to the downlink sub-frame m is a flexible sub-frame; if the HARQ feedback sub-frame is the flexible sub-frame, sending response information aiming at the downlink sub-frame m to the base station on a first non-flexible sub-frame after the HARQ feedback sub-frame in an uplink spectrum; if the HARQ feedback sub-frame is the non-flexible sub-frame, sending the response information aiming at the downlink sub-frame m to the base station on the HARQ feedback sub-frame. Through the adoption of the method provided by the invention, the HARQ feedback can be performed in the flexible duplex system, the resource confliction problem in the HARQ indication feedback is effectively solved.
Description
Technical field
The present invention relates to communication technical field, in particular to a kind of based on duplex flexibly
The HARQ feedback method of FDD system, a kind of HARQ based on the FDD system of duplex flexibly
Feedback device, a kind of subframe configuration method based on the FDD system of duplex flexibly, one are based on spirit
The sub-frame configuration device of the FDD system of duplex of living, a kind of terminal and a kind of base station.
Background technology
At present, the 5th Generation Mobile Communication System (5G) just among the research of academia and industrial circle,
Wherein, UDN (Ultra-Dense Network, super-intensive network) is an important skill of 5G
Art.UDN refers to when network design, big for some demand data amount, data cube computation number is many
Scene (such as stadium, railway station Waiting Lounge, office space etc.), carries out the group of super-intensive
Net, the interval between access website may only have tens of rice.
In UDN scene, often occur downlink traffic more (such as have more video,
Picture is downloaded), downlink resource is busy and situation that ascending resource major part is idle.Ask for this
Topic, a technology that may use under UDN scene is the most duplexing (Flexible Duplex),
Specifically according to the demand of business, at FDD, (Frequency Division Duplexing, frequency division is double
Work) system uplink spectrum in some subframe on bearing downlink business.In other words, duplexing flexibly
Technology is i.e. to use, some subframe of uplink spectrum i.e. at these sub-frame of uplink as descending sub frame
Sending downlink data on running time-frequency resource, these sub-frame of uplink diverted are referred to as flexible sub-frame.Can
See, use flexible duplex technology can more effectively utilize the frequency spectrum resource of FDD system, promote and use
Family is experienced.Arrange generally for which sub-frame of uplink in the middle of a frame and should be flexible sub-frame and have joining in advance
Put, i.e. flexible sub-frame configuration.As a kind of embodiment, as it is shown in figure 1, a kind of possible flexible son
Frame is configured that sub-frame of uplink 0/1/2/3/5/6/7/8 is flexible sub-frame, and only sub-frame of uplink 4/9 is protected
Hold as sub-frame of uplink, referred to as non-flexible subframe.
In order to control the bit error rate of data transmission, existing FDD system devises mixing certainly
Dynamic retransmission mechanism (Hybrid Automatic Repeatre-Quest, HARQ).The process of HARQ
The data that mainly transmitting terminal (such as base station) sends in subframe n, receiving terminal (such as terminal) understand with
In the HARQ feedback subframe that subframe n is corresponding, feeding back ACK/NACK is to base station.As existing
In LTE (Long Term Evolution, Long Term Evolution) system, as n+4 ＜ 10, subframe n
Corresponding HARQ feedback subframe is subframe n+4 in uplink spectrum；When n+4 >=10, subframe n
Corresponding HARQ feedback subframe is the subframe in next frame (n+4) %10 in uplink spectrum, wherein
" % " represents complementation.Concrete as in figure 2 it is shown, the data that send in subframe 0 of transmitting terminal, connect
Receiving end feeds back NACK message to base station in subframe 4, after base station receives NACK, and can be in subframe 8
Middle re-transmission data in original subframe 0；The data that transmitting terminal sends in subframe 1, receiving terminal is at son
Frame 5 feeding back ACK message is to base station.Owing to the HARQ procedure of FDD system has strict sequential
Corresponding relation, therefore terminal is when feeding back ACK/NACK, is not required to indicate this ACK/NACK
Corresponding HARQ process numbering.
If the HARQ mechanism in existing LTE is directly applied in the most duplexing scene, can go out
Existing problem.It is concrete as it is shown on figure 3, the data sent in subframe 1 should be carried out in subframe 5
ACK/NACK feeds back, but due to the most duplexing application, subframe 5 is used as flexible sub-frame
(being i.e. used as descending sub frame), therefore will be unable to feeding back ACK/NACK in subframe 5, creates
Conflict.
Therefore, how to design and be applicable to the HARQ feedback method of flexible duplex system, it is to avoid due to
Resource contention and cannot be carried out the technical problem that the situation of HARQ feedback becomes urgently to be resolved hurrily.
Summary of the invention
The present invention is based at least one above-mentioned technical problem, it is proposed that a kind of new based on the most double
The sub-frame configuration of the FDD system of work and HARQ feedback scheme, it is ensured that terminal can be the most double
Work system carries out HARQ feedback, efficiently solves the resource contention in HARQ indication feedback
Problem.
In view of this, according to the first aspect of the invention, it is proposed that a kind of based on duplex flexibly
The HARQ feedback method of FDD system, it is adaptable to terminal, including: receive on descending sub frame m
The downlink data that base station sends, wherein, m is subframe number；Judge in uplink spectrum descending with described
Whether HARQ feedback subframe corresponding to subframe m is flexible sub-frame；If described HARQ feedback subframe
For described flexible sub-frame, then after being positioned at described HARQ feedback subframe in described uplink spectrum
In first non-flexible subframe, send the response for described descending sub frame m to described base station and believe
Breath；If described HARQ feedback subframe is described non-flexible subframe, then at described HARQ feedback
On frame, send the response message for described descending sub frame m to described base station.
In this technical scheme, terminal receives the downlink data that base station sends on descending sub frame m
Time, by judging whether the HARQ feedback subframe corresponding with descending sub frame m is flexible sub-frame, makes
Can when HARQ feedback subframe is non-flexible subframe, directly in HARQ feedback subframe to
Base station sends response message, and when HARQ feedback subframe is flexible sub-frame, can be at upper line frequency
Spectrum is positioned in first non-flexible subframe after HARQ feedback subframe and sends response letter to base station
Breath, it is ensured that HARQ feedback can be carried out in flexible duplex system, efficiently solve
Resource conflict problem in HARQ indication feedback.
Wherein, m is integer, and 0≤m≤9.As a specific embodiment, for existing
For LTE system, when terminal receives the downlink data that base station sends on descending sub frame m,
If subframe m+4 is non-flexible subframe, then can directly in subframe m+4 feedback reception response letter
Breath, if subframe m+4 is flexible sub-frame, then can be in first non-spirit after being positioned at subframe m+4
Feedback reception response message in subframe of living.Here, acquiescence m+4 ＜ 10, if m+4 >=10, then subframe
HARQ feedback subframe corresponding for m is the subframe in next frame (m+4) %10 in uplink spectrum,
" % " represents complementation.
In technique scheme, it is preferable that described method also includes: send and institute to described base station
State HARQ process identification (PID) corresponding for descending sub frame m.
In this technical scheme, owing to the uplink spectrum of FDD system may there be multiple subframe joined
It is set to flexible sub-frame, then there will be multiple subframe originally needing to feed back response message is all flexible son
Frame, the technical scheme proposed based on the present invention, these response messages all can be the after these subframes
Feed back in one non-flexible subframe, i.e. appear in and feed back for multiple in a non-flexible subframe
The response message of subframe, therefore by the HARQ process identification (PID) corresponding to base station feedback so that eventually
When end feeds back the response message for multiple subframes in a non-flexible subframe, base station can be according to end
The HARQ process identification (PID) of end feedback accurately distinguishes the feedback for each HARQ process.
Wherein, HARQ process identification (PID) can be placed in response message and be sent to base station, it is also possible to will
HARQ process identification (PID) and response message packing are placed in a piece of news and are sent to base station.
In any of the above-described technical scheme, it is preferable that receive what base station sent on descending sub frame m
Before downlink data, described method also includes: receive the subframe configuration information that described base station sends；Root
The flexible sub-frame in described uplink spectrum and non-flexible subframe is determined according to described subframe configuration information；Its
In, described subframe configuration information is for indicating in described uplink spectrum the up son as flexible sub-frame
Frame, and/or described subframe configuration information is for indicating in described uplink spectrum as non-flexible subframe
Sub-frame of uplink.
In this technical scheme, terminal is by receiving the subframe configuration information that base station sends, with according to base
Stand the subframe configuration information sent to the flexible sub-frame determining in uplink spectrum and non-flexible subframe so that
Terminal can specify which sub-frame of uplink is used as transmission when using flexible duplex technology by FDD system
Downlink data, is i.e. used as flexible sub-frame, in order to carry out HARQ feedback.
In any of the above-described technical scheme, it is preferable that described flexible sub-frame is used for transmitting downlink data,
Described non-flexible subframe is used for transmitting upstream data.
According to the second aspect of the invention, it is also proposed that a kind of FDD system based on duplex flexibly
Subframe configuration method, it is adaptable to base station, including: generating subframe configuration information, described sub-frame configuration is believed
Breath is for indicating in uplink spectrum the sub-frame of uplink as flexible sub-frame, and/or described sub-frame configuration letter
Breath is for indicating in described uplink spectrum the sub-frame of uplink as non-flexible subframe；Send described to terminal
Subframe configuration information.
Wherein, terminal, after receiving subframe configuration information, can determine according to subframe configuration information
Flexible sub-frame in uplink spectrum and non-flexible subframe.
In this technical scheme, base station is by generating and sending subframe configuration information to terminal so that eventually
End can specify which sub-frame of uplink is used as under transmission by FDD system when using flexible duplex technology
Row data, are i.e. used as flexible sub-frame, in order to carry out HARQ feedback.
According to the third aspect of the invention we, it is also proposed that a kind of FDD system based on duplex flexibly
HARQ feedback device, it is adaptable to terminal, including: receive unit, at descending sub frame m
Receiving the downlink data that base station sends, wherein, m is subframe number；Judging unit, for judging
Whether line frequency spectrum is flexible sub-frame with described HARQ feedback subframe corresponding for descending sub frame m；Send out
Send unit, be used for when described HARQ feedback subframe is described flexible sub-frame, line frequency on described
Spectrum is positioned in first non-flexible subframe after described HARQ feedback subframe, to described base station
Send the response message for described descending sub frame m, and in described HARQ feedback subframe being
During described non-flexible subframe, in described HARQ feedback subframe, send for institute to described base station
State the response message of descending sub frame m.
In this technical scheme, terminal receives the downlink data that base station sends on descending sub frame m
Time, by judging whether the HARQ feedback subframe corresponding with descending sub frame m is flexible sub-frame, makes
Can when HARQ feedback subframe is non-flexible subframe, directly in HARQ feedback subframe to
Base station sends response message, and when HARQ feedback subframe is flexible sub-frame, can be at upper line frequency
Spectrum is positioned in first non-flexible subframe after HARQ feedback subframe and sends response letter to base station
Breath, it is ensured that HARQ feedback can be carried out in flexible duplex system, efficiently solve
Resource conflict problem in HARQ indication feedback.
Wherein, m is integer, and 0≤m≤9.As a specific embodiment, for existing
For LTE system, when terminal receives the downlink data that base station sends on descending sub frame m,
If subframe m+4 is non-flexible subframe, then can directly in subframe m+4 feedback reception response letter
Breath, if subframe m+4 is flexible sub-frame, then can be in first non-spirit after being positioned at subframe m+4
Feedback reception response message in subframe of living.Here, acquiescence m+4 ＜ 10, if m+4 >=10, then subframe
HARQ feedback subframe corresponding for m is the subframe in next frame (m+4) %10 in uplink spectrum,
" % " represents complementation.
In technique scheme, it is preferable that described transmitting element is additionally operable to, send to described base station
With described HARQ process identification (PID) corresponding for descending sub frame m.
In this technical scheme, owing to the uplink spectrum of FDD system may there be multiple subframe joined
It is set to flexible sub-frame, then there will be multiple subframe originally needing to feed back response message is all flexible son
Frame, the technical scheme proposed based on the present invention, these response messages all can be the after these subframes
Feed back in one non-flexible subframe, i.e. appear in and feed back for multiple in a non-flexible subframe
The response message of subframe, therefore by the HARQ process identification (PID) corresponding to base station feedback so that eventually
When end feeds back the response message for multiple subframes in a non-flexible subframe, base station can be according to end
The HARQ process identification (PID) of end feedback accurately distinguishes the feedback for each HARQ process.
Wherein, HARQ process identification (PID) can be placed in response message and be sent to base station, it is also possible to will
HARQ process identification (PID) and response message packing are placed in a piece of news and are sent to base station.
In any of the above-described technical scheme, preferably: described reception unit is additionally operable to, and receives described base
Stand send subframe configuration information, described subframe configuration information is used for indicating conduct in described uplink spectrum
The sub-frame of uplink of flexible sub-frame, and/or described subframe configuration information is used for indicating in described uplink spectrum
Sub-frame of uplink as non-flexible subframe；Described device also comprises determining that unit, for according to described
Subframe configuration information determines the flexible sub-frame in described uplink spectrum and non-flexible subframe.
In this technical scheme, terminal is by receiving the subframe configuration information that base station sends, with according to base
Stand the subframe configuration information sent to the flexible sub-frame determining in uplink spectrum and non-flexible subframe so that
Terminal can specify which sub-frame of uplink is used as transmission when using flexible duplex technology by FDD system
Downlink data, is i.e. used as flexible sub-frame, in order to carry out HARQ feedback.
In any of the above-described technical scheme, it is preferable that described flexible sub-frame is used for transmitting downlink data,
Described non-flexible subframe is used for transmitting upstream data.
According to the fourth aspect of the invention, it is also proposed that a kind of FDD system based on duplex flexibly
Sub-frame configuration device, it is adaptable to base station, including: signal generating unit, it is used for generating subframe configuration information,
Described subframe configuration information for indicating in uplink spectrum the sub-frame of uplink as flexible sub-frame, and/or
Described subframe configuration information is for indicating in described uplink spectrum the sub-frame of uplink as non-flexible subframe；
Transmitting element, for sending described subframe configuration information to terminal.
Wherein, terminal, after receiving subframe configuration information, can determine according to subframe configuration information
Flexible sub-frame in uplink spectrum and non-flexible subframe.
In this technical scheme, base station is by generating and sending subframe configuration information to terminal so that eventually
End can specify which sub-frame of uplink is used as under transmission by FDD system when using flexible duplex technology
Row data, are i.e. used as flexible sub-frame, in order to carry out HARQ feedback.
According to the fifth aspect of the invention, it is also proposed that a kind of terminal, including: such as technique scheme
According to any one of HARQ feedback device based on the flexibly FDD system of duplex.
According to the sixth aspect of the invention, it is also proposed that a kind of base station, including: such as technique scheme
According to any one of sub-frame configuration device based on the flexibly FDD system of duplex.
By above technical scheme, it is ensured that terminal can carry out HARQ in flexible duplex system
Feedback, efficiently solves the resource conflict problem in HARQ indication feedback.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of flexible configuration subframe in FDD system；
Fig. 2 shows the HARQ feedback schematic diagram of mechanism in existing FDD system；
Fig. 3 shows that existing HARQ feedback mechanism produces showing of conflict in flexible duplex system
It is intended to；
Fig. 4 shows based on duplex flexibly according to an embodiment of the invention FDD system
The schematic flow diagram of HARQ feedback method；
Fig. 5 shows based on duplex flexibly according to an embodiment of the invention FDD system
The schematic block diagram of HARQ feedback subframe；
Fig. 6 shows the schematic block diagram of terminal according to an embodiment of the invention；
Fig. 7 shows based on the FDD system of duplex flexibly according to an embodiment of the invention subframe
The schematic flow diagram of collocation method；
Fig. 8 shows based on the FDD system of duplex flexibly according to an embodiment of the invention subframe
The schematic block diagram of configuration device；
Fig. 9 shows the schematic block diagram of base station according to an embodiment of the invention；
Figure 10 shows and carries out in the FDD system of duplex flexibly according to an embodiment of the invention
The schematic diagram of HARQ feedback.
Detailed description of the invention
In order to be more clearly understood that the above-mentioned purpose of the present invention, feature and advantage, below in conjunction with attached
The present invention is further described in detail by figure and detailed description of the invention.It should be noted that not
In the case of conflict, the feature in embodiments herein and embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but,
The present invention can implement to use other to be different from other modes described here, therefore, and the present invention
Protection domain do not limited by following public specific embodiment.
Fig. 4 shows based on duplex flexibly according to an embodiment of the invention FDD system
The schematic flow diagram of HARQ feedback method.
As shown in Figure 4, based on the most duplexing FDD system according to an embodiment of the invention
HARQ feedback method, including:
Step 402, receives the downlink data that base station sends on descending sub frame m, and wherein, m is son
Frame number；
Step 404, it is judged that with described HARQ feedback corresponding for descending sub frame m in uplink spectrum
Whether frame is flexible sub-frame；
Step 406, if described HARQ feedback subframe is described flexible sub-frame, then line frequency on described
Spectrum is positioned in first non-flexible subframe after described HARQ feedback subframe, to described base station
Send the response message for described descending sub frame m；
Step 408, if described HARQ feedback subframe is described non-flexible subframe, then described
In HARQ feedback subframe, send the response message for described descending sub frame m to described base station.
Wherein, HARQ feedback method based on the flexibly FDD system of duplex shown in Fig. 4
Executive agent is terminal, and terminal can be mobile phone, panel computer etc..
In this technical scheme, terminal receives the downlink data that base station sends on descending sub frame m
Time, by judging whether the HARQ feedback subframe corresponding with descending sub frame m is flexible sub-frame, makes
Can when HARQ feedback subframe is non-flexible subframe, directly in HARQ feedback subframe to
Base station sends response message, and when HARQ feedback subframe is flexible sub-frame, can be at upper line frequency
Spectrum is positioned in first non-flexible subframe after HARQ feedback subframe and sends response letter to base station
Breath, it is ensured that HARQ feedback can be carried out in flexible duplex system, efficiently solve
Resource conflict problem in HARQ indication feedback.
Wherein, m is integer, and 0≤m≤9.As a specific embodiment, for existing
For LTE system, when terminal receives the downlink data that base station sends on descending sub frame m,
If subframe m+4 is non-flexible subframe, then can directly in subframe m+4 feedback reception response letter
Breath, if subframe m+4 is flexible sub-frame, then can be in first non-spirit after being positioned at subframe m+4
Feedback reception response message in subframe of living.Here, acquiescence m+4 ＜ 10, if m+4 >=10, then subframe
HARQ feedback subframe corresponding for m is the subframe in next frame (m+4) %10 in uplink spectrum,
" % " represents complementation.
In technique scheme, it is preferable that described method also includes: send and institute to described base station
State HARQ process identification (PID) corresponding for descending sub frame m.
In this technical scheme, owing to the uplink spectrum of FDD system may there be multiple subframe joined
It is set to flexible sub-frame, then there will be multiple subframe originally needing to feed back response message is all flexible son
Frame, the technical scheme proposed based on the present invention, these response messages all can be the after these subframes
Feed back in one non-flexible subframe, i.e. appear in and feed back for multiple in a non-flexible subframe
The response message of subframe, therefore by the HARQ process identification (PID) corresponding to base station feedback so that eventually
When end feeds back the response message for multiple subframes in a non-flexible subframe, base station can be according to end
The HARQ process identification (PID) of end feedback accurately distinguishes the feedback for each HARQ process.
Wherein, HARQ process identification (PID) can be placed in response message and be sent to base station, it is also possible to will
HARQ process identification (PID) and response message packing are placed in a piece of news and are sent to base station.
In any of the above-described technical scheme, it is preferable that receive what base station sent on descending sub frame m
Before downlink data, described method also includes: receive the subframe configuration information that described base station sends；Root
The flexible sub-frame in described uplink spectrum and non-flexible subframe is determined according to described subframe configuration information；Its
In, described subframe configuration information is for indicating in described uplink spectrum the up son as flexible sub-frame
Frame, and/or described subframe configuration information is for indicating in described uplink spectrum as non-flexible subframe
Sub-frame of uplink.
In this technical scheme, terminal is by receiving the subframe configuration information that base station sends, with according to base
Stand the subframe configuration information sent to the flexible sub-frame determining in uplink spectrum and non-flexible subframe so that
Terminal can specify which sub-frame of uplink is used as transmission when using flexible duplex technology by FDD system
Downlink data, is i.e. used as flexible sub-frame, in order to carry out HARQ feedback.
In any of the above-described technical scheme, it is preferable that described flexible sub-frame is used for transmitting downlink data,
Described non-flexible subframe is used for transmitting upstream data.
Fig. 5 shows based on duplex flexibly according to an embodiment of the invention FDD system
The schematic block diagram of HARQ feedback device.
As it is shown in figure 5, based on the FDD system of duplex flexibly according to an embodiment of the invention HARQ
Feedback device 500, including: receive unit 502, judging unit 504 and transmitting element 506.
Wherein, receive unit 502, for receiving the lower line number that base station sends on descending sub frame m
According to, wherein, m is subframe number；Judging unit 504, be used for judging in uplink spectrum with described under
Whether HARQ feedback subframe corresponding to row subframe m is flexible sub-frame；Transmitting element 506, is used for
When described HARQ feedback subframe is described flexible sub-frame, it is positioned at described in described uplink spectrum
In first non-flexible subframe after HARQ feedback subframe, send under described to described base station
The response message of row subframe m, and be used in described HARQ feedback subframe being described non-flexible subframe
Time, in described HARQ feedback subframe, send for described descending sub frame m's to described base station
Response message.
The unit 502 that receives shown in Fig. 5 can be the receptor in terminal or antenna when realizing
Deng；Judging unit 504 can be central processing unit or the baseband processor etc. of terminal when realizing；Send out
Sending unit 506 can be the communication chip of terminal, emitter or antenna etc. when realizing.
In this technical scheme, terminal receives the downlink data that base station sends on descending sub frame m
Time, by judging whether the HARQ feedback subframe corresponding with descending sub frame m is flexible sub-frame, makes
Can when HARQ feedback subframe is non-flexible subframe, directly in HARQ feedback subframe to
Base station sends response message, and when HARQ feedback subframe is flexible sub-frame, can be at upper line frequency
Spectrum is positioned in first non-flexible subframe after HARQ feedback subframe and sends response letter to base station
Breath, it is ensured that HARQ feedback can be carried out in flexible duplex system, efficiently solve
Resource conflict problem in HARQ indication feedback.
Wherein, m is integer, and 0≤m≤9.As a specific embodiment, for existing
For LTE system, when terminal receives the downlink data that base station sends on descending sub frame m,
If subframe m+4 is non-flexible subframe, then can directly in subframe m+4 feedback reception response letter
Breath, if subframe m+4 is flexible sub-frame, then can be in first non-spirit after being positioned at subframe m+4
Feedback reception response message in subframe of living.Here, acquiescence m+4 ＜ 10, if m+4 >=10, then subframe
HARQ feedback subframe corresponding for m is the subframe in next frame (m+4) %10 in uplink spectrum,
" % " represents complementation.
In technique scheme, it is preferable that described transmitting element 506 is additionally operable to, to described base station
Send and described HARQ process identification (PID) corresponding for descending sub frame m.
In this technical scheme, owing to the uplink spectrum of FDD system may there be multiple subframe joined
It is set to flexible sub-frame, then there will be multiple subframe originally needing to feed back response message is all flexible son
Frame, the technical scheme proposed based on the present invention, these response messages all can be the after these subframes
Feed back in one non-flexible subframe, i.e. appear in and feed back for multiple in a non-flexible subframe
The response message of subframe, therefore by the HARQ process identification (PID) corresponding to base station feedback so that eventually
When end feeds back the response message for multiple subframes in a non-flexible subframe, base station can be according to end
The HARQ process identification (PID) of end feedback accurately distinguishes the feedback for each HARQ process.
Wherein, HARQ process identification (PID) can be placed in response message and be sent to base station, it is also possible to will
HARQ process identification (PID) and response message packing are placed in a piece of news and are sent to base station.
In any of the above-described technical scheme, preferably: described reception unit 502 is additionally operable to, institute is received
Stating the subframe configuration information that base station sends, described subframe configuration information is used for indicating in described uplink spectrum
As the sub-frame of uplink of flexible sub-frame, and/or described subframe configuration information is used for indicating described upper line frequency
As the sub-frame of uplink of non-flexible subframe in spectrum；Described FDD system based on duplex flexibly
HARQ feedback device 500 also comprises determining that unit 508, for according to described subframe configuration information
Determine the flexible sub-frame in described uplink spectrum and non-flexible subframe.
In this technical scheme, terminal is by receiving the subframe configuration information that base station sends, with according to base
Stand the subframe configuration information sent to the flexible sub-frame determining in uplink spectrum and non-flexible subframe so that
Terminal can specify which sub-frame of uplink is used as transmission when using flexible duplex technology by FDD system
Downlink data, is i.e. used as flexible sub-frame, in order to carry out HARQ feedback.Wherein it is determined that unit
508 can be central processing unit or the baseband processor of terminal when realizing.
In any of the above-described technical scheme, it is preferable that described flexible sub-frame is used for transmitting downlink data,
Described non-flexible subframe is used for transmitting upstream data.
Fig. 6 shows the schematic block diagram of terminal according to an embodiment of the invention.
As shown in Figure 6, terminal 600 according to an embodiment of the invention, including: as shown in Figure 5
HARQ feedback device 500 based on the flexibly FDD system of duplex.
Fig. 7 shows based on the FDD system of duplex flexibly according to an embodiment of the invention subframe
The schematic flow diagram of collocation method.
As it is shown in fig. 7, based on the FDD system of duplex flexibly according to an embodiment of the invention son
Frame collocation method, including:
Step 702, generates subframe configuration information, and described subframe configuration information is used for indicating uplink spectrum
The middle sub-frame of uplink as flexible sub-frame, and/or described subframe configuration information is used for indicating described up
As the sub-frame of uplink of non-flexible subframe in frequency spectrum；
Step 704, sends described subframe configuration information to terminal.
Wherein, terminal, after receiving subframe configuration information, can determine according to subframe configuration information
Flexible sub-frame in uplink spectrum and non-flexible subframe.
In this technical scheme, base station is by generating and sending subframe configuration information to terminal so that eventually
End can specify which sub-frame of uplink is used as under transmission by FDD system when using flexible duplex technology
Row data, are i.e. used as flexible sub-frame, in order to carry out HARQ feedback.
Wherein, the holding of the subframe configuration method based on the flexibly FDD system of duplex shown in Fig. 7
Row main body is base station.
Fig. 8 shows based on the FDD system of duplex flexibly according to an embodiment of the invention subframe
The schematic block diagram of configuration device.
As shown in Figure 8, based on the FDD system of duplex flexibly according to an embodiment of the invention son
Frame configuration device 800, it is adaptable to base station, including: signal generating unit 802 and transmitting element 804.
Wherein, signal generating unit 802, it is used for generating subframe configuration information, described subframe configuration information is used
As the sub-frame of uplink of flexible sub-frame in instruction uplink spectrum, and/or described subframe configuration information is used
As the sub-frame of uplink of non-flexible subframe in the described uplink spectrum of instruction；Transmitting element 804, is used for
Described subframe configuration information is sent to terminal.
Wherein, terminal, after receiving subframe configuration information, can determine according to subframe configuration information
Flexible sub-frame in uplink spectrum and non-flexible subframe.
In this technical scheme, base station is by generating and sending subframe configuration information to terminal so that eventually
End can specify which sub-frame of uplink is used as under transmission by FDD system when using flexible duplex technology
Row data, are i.e. used as flexible sub-frame, in order to carry out HARQ feedback.
Signal generating unit 802 shown in Fig. 8 can be central processing unit or baseband processor when realizing
Deng；Transmitting element 804 can be emitter or antenna etc. when realizing.
Fig. 9 shows the schematic block diagram of base station according to an embodiment of the invention.
As it is shown in figure 9, base station 900 according to an embodiment of the invention, including: as shown in Figure 8
Sub-frame configuration device 800 based on the flexibly FDD system of duplex.
In sum, technical scheme mainly proposes and carries out in flexible duplex system
The method of HARQ feedback.Specifically, it is the configuration information according to duplex flexibly, will feedback
First after the ascending resource of ACK/NACK is configured to subframe m of transmission downlink data is used as
On the sub-frame of uplink n of uplink.
Mainly include following steps:
1, terminal receives the flexible sub-frame configuration information that base station is sent.According to this flexible sub-frame configuration letter
Breath, terminal may determine that and (claims being used for 1 10ms frame of uplink in FDD system in uplink frame
Be 1 uplink frame) in, have which sub-frame of uplink to be confirmed as flexible sub-frame, which sub-frame of uplink
For non-flexible subframe；
2, terminal is for the downlink data received at descending sub frame m, it is judged that corresponding with subframe m
Whether HARQ feedback subframe is flexible sub-frame.If the HARQ feedback subframe corresponding with subframe m is
Non-flexible subframe, then terminal is fed back for descending in the HARQ feedback subframe corresponding with subframe m
The ACK/NACK information of subframe m, and the HARQ process number corresponding to descending sub frame m；
If the HARQ feedback subframe corresponding with subframe m is flexible sub-frame, then terminal will with subframe m pair
Feed back for descending sub frame m's in first non-flexible subframe after the HARQ feedback subframe answered
ACK/NACK information, and the HARQ process number corresponding to descending sub frame m.
Non-limiting as one embodiment of the present of invention, as shown in Figure 10, terminal receives base station
The flexible sub-frame sent is configured that in a uplink frame, and sub-frame of uplink 0/1/2/3/5/6/7/8 is
Flexible sub-frame, sub-frame of uplink 4/9 is non-flexible subframe.
If terminal have received downlink data at descending sub frame 0, due to sub-frame of uplink 0+4, the most up son
Frame 4 is non-flexible subframe, then terminal will be fed back for descending sub frame 0 at sub-frame of uplink 4
ACK/NACK information, and the HARQ process number corresponding to descending sub frame 0；
If terminal have received downlink data at descending sub frame 1, due to sub-frame of uplink 1+4, the most up son
Frame 5 is flexible sub-frame, then terminal is by first non-flexible subframe after sub-frame of uplink 5, the most just
It is that sub-frame of uplink 9 feeds back the ACK/NACK information for descending sub frame 1, and descending sub frame 1
Corresponding HARQ process number；
If terminal have received downlink data at descending sub frame 2, due to sub-frame of uplink 2+4, the most up son
Frame 6 is flexible sub-frame, then terminal is by first non-flexible subframe after sub-frame of uplink 6, the most just
It is that sub-frame of uplink 9 feeds back the ACK/NACK information for descending sub frame 2, and descending sub frame 2
Corresponding HARQ process number.
Propose in the above embodiment of the present invention carries out HARQ indication feedback in flexible duplex system
Method, efficiently solve the resource conflict problem in HARQ indication feedback.
Technical scheme being described in detail above in association with accompanying drawing, the present invention proposes a kind of new
Sub-frame configuration scheme based on the FDD system of duplex flexibly and HARQ feedback scheme, it is ensured that energy
Enough in flexible duplex system, carry out HARQ feedback, efficiently solve in HARQ indication feedback
Resource conflict problem.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for
For those skilled in the art, the present invention can have various modifications and variations.All essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included in the present invention
Protection domain within.
Claims (12)
1. a HARQ feedback method based on the FDD system of duplex flexibly, it is adaptable to eventually
End, it is characterised in that including:
Receiving the downlink data that base station sends on descending sub frame m, wherein, m is subframe number；
Judge whether uplink spectrum to be spirit with described HARQ feedback subframe corresponding for descending sub frame m
Subframe alive；
If described HARQ feedback subframe is described flexible sub-frame, then it is positioned in described uplink spectrum
In first non-flexible subframe after described HARQ feedback subframe, to described base station send for
The response message of described descending sub frame m；
If described HARQ feedback subframe is described non-flexible subframe, then at described HARQ feedback
On frame, send the response message for described descending sub frame m to described base station.
Method the most according to claim 1, it is characterised in that also include:
Send and described HARQ process identification (PID) corresponding for descending sub frame m to described base station.
Method the most according to claim 1 and 2, it is characterised in that on descending sub frame m
Before receiving the step of the downlink data that base station sends, also include:
Receive the subframe configuration information that described base station sends；
The flexible sub-frame in described uplink spectrum and non-flexible is determined according to described subframe configuration information
Frame；
Wherein, described subframe configuration information is for indicating in described uplink spectrum as flexible sub-frame
Row subframe, and/or described subframe configuration information be used for indicating in described uplink spectrum as non-flexible son
The sub-frame of uplink of frame.
The most according to the method in any one of claims 1 to 3, it is characterised in that described spirit
Subframe of living is used for transmitting downlink data, and described non-flexible subframe is used for transmitting upstream data.
5. a subframe configuration method based on the FDD system of duplex flexibly, it is adaptable to base station, its
It is characterised by, including:
Generating subframe configuration information, described subframe configuration information is used for indicating in uplink spectrum as flexibly
The sub-frame of uplink of subframe, and/or described subframe configuration information is used for indicating conduct in described uplink spectrum
The sub-frame of uplink of non-flexible subframe；
Described subframe configuration information is sent to terminal.
6. a HARQ feedback device based on the FDD system of duplex flexibly, it is adaptable to eventually
End, it is characterised in that including:
Receive unit, for receiving the downlink data that base station sends, wherein, m on descending sub frame m
For subframe number；
Judging unit, anti-with described HARQ corresponding for descending sub frame m for judging in uplink spectrum
Whether feedback subframe is flexible sub-frame；
Transmitting element, for when described HARQ feedback subframe is described flexible sub-frame, described
Uplink spectrum is positioned in first non-flexible subframe after described HARQ feedback subframe, to institute
State base station and send the response message for described descending sub frame m, and be used for
When described HARQ feedback subframe is described non-flexible subframe, at described HARQ feedback
On frame, send the response message for described descending sub frame m to described base station.
Device the most according to claim 6, it is characterised in that described transmitting element is also used
In, send and described HARQ process identification (PID) corresponding for descending sub frame m to described base station.
8. according to the device described in claim 6 or 7, it is characterised in that:
Described reception unit is additionally operable to, and receives the subframe configuration information that described base station sends, described subframe
Configuration information is for indicating in described uplink spectrum the sub-frame of uplink as flexible sub-frame and/or described
Subframe configuration information is for indicating in described uplink spectrum the sub-frame of uplink as non-flexible subframe；
Described device also comprises determining that unit, for determining described according to described subframe configuration information
Flexible sub-frame in line frequency spectrum and non-flexible subframe.
9. according to the device according to any one of claim 6 to 8, it is characterised in that described spirit
Subframe of living is used for transmitting downlink data, and described non-flexible subframe is used for transmitting upstream data.
10. a sub-frame configuration device based on the FDD system of duplex flexibly, it is adaptable to base station,
It is characterized in that, including:
Signal generating unit, is used for generating subframe configuration information, and described subframe configuration information is used for indicating up
As the sub-frame of uplink of flexible sub-frame in frequency spectrum, and/or described subframe configuration information is used for indicating described
As the sub-frame of uplink of non-flexible subframe in uplink spectrum；
Transmitting element, for sending described subframe configuration information to terminal.
11. 1 kinds of terminals, it is characterised in that including: as according to any one of claim 6 to 9
HARQ feedback device based on the flexibly FDD system of duplex.
12. 1 kinds of base stations, it is characterised in that including: as claimed in claim 10 based on flexibly
The sub-frame configuration device of the FDD system of duplex.
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| CN105871528B (en) | 2018-12-11 |
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