CN108174356A - The uplink feedback method and device of user in broadband cluster system group-calling service - Google Patents
The uplink feedback method and device of user in broadband cluster system group-calling service Download PDFInfo
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- CN108174356A CN108174356A CN201711434077.XA CN201711434077A CN108174356A CN 108174356 A CN108174356 A CN 108174356A CN 201711434077 A CN201711434077 A CN 201711434077A CN 108174356 A CN108174356 A CN 108174356A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
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Abstract
The uplink feedback method of user in broadband cluster system group-calling service provided by the invention, multiple groups are established in wireless base station, and it is the corresponding feedback channel of each group allocation, the feedback channel of multiple groups occupies 1RB time-frequency domain resources jointly, improve the utilization rate of system resource, the downlink data that user terminal sends wireless base station is detected, when detecting the downlink data mistake, the feedback signal of preset format is sent to wireless base station on the feedback channel of wireless base station distribution, downlink data does not send feedback signal then normally, user terminals resources are saved, reduce the difficulty of wireless base station blind Detecting, the feedback signal of preset format includes front-end protection interval and rear end protection interval, avoid time delay in advance and time delay lag caused by the nonsynchronous problem of uplink.Based on uplink feedback method provided by the invention so that Idle state user terminal uplink feedback is possibly realized, and can ensure the reliability of group-calling service transmission, improves the availability of frequency spectrum.
Description
Technical field
The present invention relates to broadband wireless communications field, more particularly to being used in a kind of broadband cluster system group-calling service
The uplink feedback method and device at family.
Background technology
It is most common one kind in LTE cluster communications (Trunking Communications) that group, which exhales (Group Call),
Communication service.All users to share downlink cluster dedicated channels in group during progress group-calling service, i.e., it is all with per family using identical
Downlink resource, only main that user is exhaled to be in RRC connected states, remaining user is substantially at RRC Idle state, in public network standard for
The terminal of RRC connected states can carry out the uplink feedback of downlink reception data mode by PUCCH channels or PUSCH channel multiplexings,
But for RRC Idle state terminal without uplink feedback.CCSA standards are also defined as group-calling service anti-without uplink
Feedback.
Therefore group-calling service but can lead to a large amount of wastes of system resource frequently with the pattern of conservative scheduling in this way, and
When subscriber channel deteriorates in certain groups, system cannot adjust in real time, reduce the stability of system.
Invention content
In view of this, the present invention proposes the uplink feedback method and dress of user in a kind of broadband cluster system group-calling service
It puts, disclosure satisfy that Idle state terminal carries out uplink feedback in time, and it is less to occupy stock number under group-calling service.
Specific technical solution is as follows：
A kind of uplink feedback method of user in broadband cluster system group-calling service, applied to wireless base station, the method
Including：
Multiple groups are established, and are each corresponding feedback channel of the group allocation, are made when in each group
It is fed back during the downlink data mistake that user terminal receives by corresponding feedback channel；
Blind Detecting is carried out to the feedback channel of each group in real time；
When the error in data feedback signal for detecting user terminal, according to preset feedback processing pattern to the user
Group where terminal carries out feedback processing.
Optionally, described is the corresponding feedback channel of each group allocation, including：
For each described one public feedback channel of group allocation.
Optionally, described is the corresponding feedback channel of each group allocation, including：
Determine the priority of each user terminal in each group, the priority includes the first priority and second
Priority；
Respectively each first priority user terminal distributes a feedback channel；
The second priority user terminal in each group is grouped respectively, and second each to organize is preferential
Grade user terminal distributes a public feedback channel.
Preferably, the feedback channel of preset quantity occupies 1RB time-frequency domain resources jointly, and the time-frequency domain resources include two
Slot, each user terminal transmission code on Slot divide feedback signal.
Preferably, it is described that blind Detecting is carried out to the feedback channel of each group in real time, including：
It detects whether to receive the feedback signal on the feedback channel from each group in real time；
When the power of the feedback signal received is more than power threshold or signal-to-noise ratio is more than signal-noise ratio threshold value, judgement
The feedback signal is the error in data feedback signal that user terminal is sent.
Optionally, it is described when the error in data feedback signal for detecting user terminal, according to preset feedback processing mould
Formula carries out feedback processing to the group where the user terminal, including：
According to the cyclic shift value in the error in data feedback signal of user terminal, the group where the user terminal is determined
Group；
Reduce the code check to group's transmission data where the user terminal.
Optionally, it is described when the error in data feedback signal for detecting user terminal, according to preset feedback processing mould
Formula carries out feedback processing to the group where the user terminal, including：
According to the cyclic shift value in the error in data feedback signal of user terminal, the preferential of the user terminal is determined
Grade；
When the user terminal is the first priority, data are retransmitted to the user terminal；
When the user terminal is the second priority, the code to the group transmission data where the user terminal is reduced
Rate.
The uplink feedback device of user in a kind of broadband cluster system group-calling service, applied to wireless base station, including：
Group establishes unit, for establishing multiple groups, and is each corresponding feedback channel of the group allocation, makes to work as
It is fed back during the downlink data mistake that the user terminal in each group receives by corresponding feedback channel；
Blind Detecting unit, for carrying out blind Detecting to the feedback channel of each group in real time；
Feedback processing unit, for when the error in data feedback signal for detecting user terminal, according to preset feedback
Tupe carries out feedback processing to the group where the user terminal.
Optionally, the group establishes unit and is specifically used for establishing multiple groups, and is each group allocation one
Public feedback channel.
Optionally, the group establishes unit and includes：
First determination subelement, for determining the priority of each user terminal in each group, the priority
Including the first priority and the second priority；
First distribution subelement, for being respectively that each first priority user terminal distributes a feedback channel；
Second distribution subelement, for being grouped respectively to the second priority user terminal in each group,
And the second priority user terminal each to organize distributes a public feedback channel.
Preferably, the blind Detecting unit includes：
Detection sub-unit, for detecting whether to receive the feedback letter on the feedback channel from each group in real time
Number；
Judge subelement, be more than noise for working as the power of feedback signal received more than power threshold or signal-to-noise ratio
During than threshold value, the error in data feedback signal that the feedback signal is sent for user terminal is judged.
Optionally, the feedback processing unit includes：
Second determination subelement for the cyclic shift value in the error in data feedback signal according to user terminal, determines
Group where the user terminal；
First processing subelement, for reducing to the code check of group's transmission data where the user terminal.
Optionally, the feedback processing unit includes：
Third determination subelement for the cyclic shift value in the error in data feedback signal according to user terminal, determines
The priority of the user terminal；
Second processing subelement, for when the user terminal is the first priority, number to be retransmitted to the user terminal
According to；
Third handles subelement, for when the user terminal is the second priority, reducing to the user terminal institute
Group transmission data code check.
A kind of uplink feedback method of user in broadband cluster system group-calling service, applied to user terminal, the method
Including：
Receive the downlink data that wireless base station is sent；
The downlink data is detected；
When detecting the downlink data mistake, to the wireless base on the feedback channel of wireless base station distribution
It stands and sends the feedback signal of preset format, the feedback signal of the preset format is included between front-end protection interval and rear end protection
Every.
Preferably, the feedback signal of the preset format is additionally included between the front-end protection interval and rear end protection
Cyclic prefix and feedback data, length every centre are respectively two time-domain symbols, the cyclic prefix and the feedback data
In data it is identical, the mapping orthogonal sequence with cyclic shift value on each carrier of arranging.
The uplink feedback device of user in a kind of broadband cluster system group-calling service, applied to user terminal, including：
Receiving unit, for receiving the downlink data of wireless base station transmission；
Detection unit, for being detected to the downlink data；
Feedback unit, for when detecting the downlink data mistake, in the feedback channel of wireless base station distribution
On the feedback signal of preset format is sent to the wireless base station, the feedback signal of the preset format includes front-end protection interval
With rear end protection interval.
A kind of wireless base station is also provided, the wireless base station includes：First communication equipment, for being led to user terminal
Letter；First memory, for storing program；First processor, for performing described program, when the first processor performs institute
Realize above application in the method for wireless base station when stating program.
A kind of user terminal is also provided, the user terminal includes：Second communication equipment, for being led to wireless base station
Letter；Second memory, for storing program；Second processor, for performing described program, when the second processor performs institute
Realize above application in the method for user terminal when stating program.
Relative to the prior art, beneficial effects of the present invention are as follows：
The uplink feedback method of user in broadband cluster system group-calling service provided by the invention, wireless base station is established multiple
Group, and be the corresponding feedback channel of each group allocation, the feedback channel of multiple groups occupies 1RB time-frequency domain resources jointly,
The utilization rate of system resource is improved, the downlink data that user terminal sends wireless base station is detected, described when detecting
During downlink data mistake, the feedback signal of preset format is sent to wireless base station on the feedback channel of wireless base station distribution, under
Row data do not send feedback signal then normally, have saved user terminals resources, reduce the difficulty of wireless base station blind Detecting, preset
The feedback signal of form include front-end protection interval and rear end protection interval, avoid time delay in advance and time delay lag caused by
The nonsynchronous problem of row.Based on uplink feedback method provided by the invention so that Idle state user terminal uplink feedback becomes can
Can, it can ensure the reliability of group-calling service transmission, improve the availability of frequency spectrum.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention, for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 exhales feedback Sample Scenario figure for group；
Fig. 2 is the uplink feedback of user in a kind of broadband cluster system group-calling service disclosed in some embodiments of the present invention
The flow chart of method；
Fig. 3 is feedback channel design schematic diagram disclosed in some embodiments of the present invention；
Fig. 4 is the uplink feedback of user in a kind of broadband cluster system group-calling service disclosed in some embodiments of the present invention
Apparatus structure schematic diagram；
Fig. 5 is the uplink feedback of user in a kind of broadband cluster system group-calling service disclosed in some embodiments of the present invention
Method flow diagram；
Fig. 6 is the advanced front-end protection interval F-GAP functional schematics of time delay disclosed in some embodiments of the present invention；
Fig. 7 is the data assignment schematic diagram of feedback data Date disclosed in some embodiments of the present invention；
Fig. 8 is that time delay disclosed in some embodiments of the present invention lags rear end protection interval E-GAP functional schematics；
Fig. 9 is the uplink feedback of user in a kind of broadband cluster system group-calling service disclosed in some embodiments of the present invention
Apparatus structure schematic diagram；
Figure 10 is a kind of wireless base station structure diagram disclosed in some embodiments of the present invention；
Figure 11 is a kind of user terminal structure diagram disclosed in some embodiments of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
Referring to Fig. 1, in group service, user terminal is since signal environment changes, such as the building shown in Fig. 1 hides
Gear can cause the user terminal (UE) after building the situation for receiving error in data occur, and in the prior art, user terminal cannot
Uplink feedback is carried out, error in data is received to wireless terminal feedback, subscriber channel is caused to deteriorate, reduces the stability of system.
In view of the above-mentioned problems, the uplink feedback side present embodiment discloses user in a kind of broadband cluster system group-calling service
Method, applied to wireless base station, referring to Fig. 2, the method specifically includes following steps：
S101：Multiple groups are established, and are each corresponding feedback channel of the group allocation, are made when each group
In user terminal receive downlink data mistake when fed back by corresponding feedback channel；
It is understood that a downlink data of wireless base station hair, multiple user terminals in group receive simultaneously, due to
The location of each user terminal difference, the error in data that the user terminal having may be caused to receive, other users are whole
It is normal to terminate the data received.
When group establishes, wireless base station can be the corresponding feedback channel of each group allocation, and present embodiment discloses two
The pattern of kind distribution feedback channel.
Allocation model one：
For each described one public feedback channel of group allocation, that is to say, that each group corresponds to a feedback
Channel, all user terminals in group are by same feedback channel to the feedback signal of wireless base station feedback data mistake.
In such a mode, which group wireless base station can only distinguish user terminal from by feedback signal, but accordingly
, this pattern can effectively economize on resources.
Allocation model two：
Determine the priority of each user terminal in each group, the priority includes the first priority and second
Priority；Respectively each first priority user terminal distributes a feedback channel；Respectively in each group
Two priority user terminals are grouped, and the second priority user terminal each to organize distributes a public feedback letter
Road.
It is understood that the first priority is higher than the second priority, that is to say, that the first priority user terminal is attached most importance to
Want user terminal, wireless base station is that it distributes dedicated feedback channel, and the second priority user terminal is general subscriber terminal, nothing
Line base station is grouped the second priority user terminal in each group, the number of the second priority user terminal in each group
Amount can be adjusted according to actual conditions by wireless base station, and the second priority user terminal each to organize distributes a public affairs
Common feedback channel, all second priority user terminals in group are by same feedback channel to wireless base station feedback data
The feedback signal of mistake.
In such a mode, wireless base station can distinguish the priority of user terminal by feedback signal, that is to say, that wireless
Whether the user terminal that base station can distinguish feedback is Very Important Person, and can be normal client in the user terminal for determining feedback
When, the user terminal for distinguishing feedback comes from which specific group in which group, and this mode wireless base station is to the user of feedback
The accuracy of identification of terminal is high, and responsible consumer terminal can be fed back by dedicated feedback channel, and the reliability of feedback has been turned up.
S102：Blind Detecting is carried out to the feedback channel of each group in real time；
Specifically, the implementation procedure of S102 is as follows：
It detects whether to receive the feedback signal on the feedback channel from each group in real time；
When the power of the feedback signal received is more than power threshold or signal-to-noise ratio is more than signal-noise ratio threshold value, judgement
The feedback signal is the error in data feedback signal that user terminal is sent.
It should be noted that wireless base station is not aware that user terminal has sent feedback signal, due to being that code point resource is anti-
Feedback, can not determine to be fed back on which code channel, so needing to determine whether user terminal sends by blind Detecting
Feedback signal.
S103：When the error in data feedback signal for detecting user terminal, according to preset feedback processing pattern to institute
Group where stating user terminal carries out feedback processing.
Specifically, corresponding to the pattern of two kinds of distribution feedback channels in above-mentioned S101, the present embodiment also discloses that two kinds instead
Present tupe.
It should be noted that the feedback signal of user terminal includes the orthogonal sequence with cyclic shift value, difference feedback
Orthogonal sequence in the feedback signal transmitted in channel is identical, but cyclic shift value is different, in this way can be according to cycle
Shift value distinguishes feedback channel.
The design of feedback channel is described as shown in figure 3, the feedback channel of preset quantity occupies 1RB time-frequency domain resources jointly
Time-frequency domain resources include two Slot, and each user terminal transmission code on Slot divides feedback signal.
It is understood that the quantity of the feedback channel allowed in 1RB time-frequency domain resources is limited, preset quantity is
The upper limit of feedback channel quantity allowed in 1RB time-frequency domain resources.
The uplink feedback method of user in broadband cluster system group-calling service provided in this embodiment, wireless base station are established more
A group, and be the corresponding feedback channel of each group allocation, the feedback channel of preset quantity occupies 1RB time-frequency domains money jointly
Source improves the utilization rate of system resource.
Feedback processing pattern one：
Based on above-mentioned allocation model one, the cycle under this pattern in the error in data feedback signal of user terminal is moved
Place value determines the group where the user terminal；Reduce the code check to group's transmission data where the user terminal.
Feedback model two
Based on above-mentioned allocation model two, the cycle under this pattern in the error in data feedback signal of user terminal is moved
Place value determines the priority of the user terminal；When the user terminal is the first priority, retransmitted to the user terminal
Data；When the user terminal is the second priority, the code check to the group transmission data where the user terminal is reduced.
The uplink feedback method of user in broadband cluster system group-calling service provided in this embodiment, wireless base station are established more
A group, and be the corresponding feedback channel of each group allocation, the feedback channel of preset quantity occupies 1RB time-frequency domains money jointly
Source improves the utilization rate of system resource, the uplink feedback method provided based on embodiment so that Idle state user terminal uplink
Feedback is possibly realized, and can ensure the reliability of group-calling service transmission, improves the availability of frequency spectrum.
Embodiment two
Based on the uplink feedback method of user in broadband cluster system group-calling service a kind of disclosed in embodiment one, please refer to
Fig. 4, present embodiment discloses the uplink feedback device of user in broadband cluster system group-calling service a kind of, applied to wireless base
It stands, including：
Group establishes unit 101, for establishing multiple groups, and is each corresponding feedback channel of the group allocation,
Make to pass through corresponding feedback channel when the downlink data mistake that the user terminal in each group receives and be fed back；
Blind Detecting unit 102, for carrying out blind Detecting to the feedback channel of each group in real time；
Optionally, the group establishes unit 101 and is specifically used for establishing multiple groups, and is each group allocation one
A public feedback channel.
Optionally, the group establishes unit 101 and includes：
First determination subelement, for determining the priority of each user terminal in each group, the priority
Including the first priority and the second priority；
First distribution subelement, for being respectively that each first priority user terminal distributes a feedback channel；
Second distribution subelement, for being grouped respectively to the second priority user terminal in each group,
And the second priority user terminal each to organize distributes a public feedback channel.
Specifically, the blind Detecting unit 102 includes：
Detection sub-unit, for detecting whether to receive the feedback letter on the feedback channel from each group in real time
Number；
Judge subelement, be more than noise for working as the power of feedback signal received more than power threshold or signal-to-noise ratio
During than threshold value, the error in data feedback signal that the feedback signal is sent for user terminal is judged.
Feedback processing unit 103, for when the error in data feedback signal for detecting user terminal, according to preset anti-
It presents tupe and feedback processing is carried out to the group where the user terminal.
Two kinds of optional modes that unit 101 is established with above-mentioned group are corresponding, and the feedback processing unit 103 also has two
The optional mode of kind：
Optionally, feedback processing unit 103 includes：
Second determination subelement for the cyclic shift value in the error in data feedback signal according to user terminal, determines
Group where the user terminal；
First processing subelement, for reducing to the code check of group's transmission data where the user terminal.
Optionally, feedback processing unit 103 includes：
Third determination subelement for the cyclic shift value in the error in data feedback signal according to user terminal, determines
The priority of the user terminal；
Second processing subelement, for when the user terminal is the first priority, number to be retransmitted to the user terminal
According to；
Third handles subelement, for when the user terminal is the second priority, reducing to the user terminal institute
Group transmission data code check.
The uplink feedback device of user in broadband cluster system group-calling service provided in this embodiment, wireless base station are established more
A group, and be the corresponding feedback channel of each group allocation, multiple feedback channels occupy 1RB time-frequency domain resources jointly, improve
The utilization rate of system resource.Based on embodiment provide uplink feedback device so that Idle state user terminal uplink feedback into
It is possible, can ensures the reliability of group-calling service transmission, improves the availability of frequency spectrum.
Embodiment three
Referring to Fig. 5, present embodiment discloses the uplink feedback method of user in broadband cluster system group-calling service a kind of,
Applied to user terminal, the method specifically includes following steps：
S201：Receive the downlink data that wireless base station is sent；
S202：The downlink data is detected；
S203：When detecting the downlink data mistake, to described on the feedback channel of wireless base station distribution
Wireless base station sends the feedback signal of preset format, and the feedback signal of the preset format includes front-end protection interval and rear end and protects
Shield interval.
It is understood that when the downlink data that user terminal receives does not send feedback signal then normally, use has been saved
Family terminal resource reduces the difficulty of wireless base station blind Detecting.
Specifically, referring to Fig. 3, the feedback signal of the preset format includes front-end protection interval F-GAP, rear end is protected
It is spaced E-GAP and the cyclic prefix CP among the front-end protection interval F-GAP and the rear end protection interval E-GAP
(Cyclic Prefix) and feedback data Date.
Referring to Fig. 6, the length of front-end protection interval F-GAP is a time-domain symbol, wherein any data are not sent, when
When RRC Idle state is likely to occur uplink loss, front-end protection interval F-GAP is used for the situation for protecting time delay advanced, does not interfere with
A upper sub-frame data.
Cyclic prefix CP (Cyclic Prefix) and feedback data Date length are respectively two time-domain symbols, described to follow
Ring prefix CP (Cyclic Prefix) is identical with the data in the feedback data Date, arranges mapping on each carrier
The orthogonal sequence with cyclic shift value.In ofdm system, cyclic prefix CP (Cyclic Prefix) is for protecting between data
It is orthogonal, prevent the time delay occurred after uplink loss lag the problem of causing data that can not parse.
Fig. 7 is the data assignment schematic diagram of feedback data Date, and Date includes 12 groups of carrier waves in figure, is mapped in each carrier wave
On dataCalculation formula be：
Wherein, α is cyclic shift value, and n is carrier index.
Wherein, φ (n) is sequence index.
Referring to Fig. 8, rear end protection interval E-GAP, any data are not sent in interval, when the time delay lag time of appearance
More than 160Ts (Basic Time unit), subsequent next sub-frame data is not interfered with.
The uplink feedback method of user in broadband cluster system group-calling service provided in this embodiment, user terminal is to wireless
The downlink data that base station is sent is detected, when detecting the downlink data mistake, in the feedback letter of wireless base station distribution
The feedback signal of preset format is sent on road to wireless base station, downlink data does not send feedback signal then normally, saved user
Terminal resource, reduces the difficulty of wireless base station blind Detecting, and the feedback signal of preset format includes front-end protection interval and rear end
Protection interval, avoid time delay in advance and time delay lag caused by the nonsynchronous problem of uplink.The uplink provided based on embodiment
Feedback method so that Idle state user terminal uplink feedback is possibly realized, and can ensure the reliability of group-calling service transmission, is improved
The availability of frequency spectrum.
Example IV
Based on the uplink feedback method of user in broadband cluster system group-calling service a kind of disclosed in embodiment three, please refer to
Fig. 9, the present embodiment correspond to the uplink feedback device for disclosing user in a kind of broadband cluster system group-calling service, including：
Receiving unit 201, for receiving the downlink data of wireless base station transmission；
Detection unit 202, for being detected to the downlink data；
Feedback unit 203, for when detecting the downlink data mistake, in the feedback letter of wireless base station distribution
The feedback signal of preset format is sent on road to the wireless base station, the feedback signal of the preset format is including between front-end protection
Every with rear end protection interval.
The uplink feedback device of user in broadband cluster system group-calling service provided in this embodiment, user terminal is to wireless
The downlink data that base station is sent is detected, when detecting the downlink data mistake, in the feedback letter of wireless base station distribution
The feedback signal of preset format is sent on road to wireless base station, downlink data does not send feedback signal then normally, saved user
Terminal resource, reduces the difficulty of wireless base station blind Detecting, and the feedback signal of preset format includes front-end protection interval and rear end
Protection interval, avoid time delay in advance and time delay lag caused by the nonsynchronous problem of uplink.The uplink provided based on embodiment
Feedback device so that Idle state user terminal uplink feedback is possibly realized, and can ensure the reliability of group-calling service transmission, is improved
The availability of frequency spectrum.
Referring to Fig. 10, present embodiment discloses a kind of wireless base station, the wireless base station includes：First communication equipment
301st, first memory 302 and first processor 303；
First communication equipment 301, for communicating with user terminal；
The first memory 302, for storing program；
The first processor 303, for performing described program, when the first processor 303 performs described program
Realize the uplink feedback of user in a kind of disclosed broadband cluster system group-calling service applied to wireless base station of above-described embodiment
Method；
The method specifically includes：
Multiple groups are established, and are each corresponding feedback channel of the group allocation, are made when in each group
It is fed back during the downlink data mistake that user terminal receives by corresponding feedback channel；
Blind Detecting is carried out to the feedback channel of each group in real time；
When the error in data feedback signal for detecting user terminal, according to preset feedback processing pattern to the user
Group where terminal carries out feedback processing.
Optionally, described is the corresponding feedback channel of each group allocation, including：
For each described one public feedback channel of group allocation.
Optionally, described is the corresponding feedback channel of each group allocation, including：
Determine the priority of each user terminal in each group, the priority includes the first priority and second
Priority；
Respectively each first priority user terminal distributes a feedback channel；
The second priority user terminal in each group is grouped respectively, and second each to organize is preferential
Grade user terminal distributes a public feedback channel.
Further, the feedback channel of preset quantity occupies 1RB time-frequency domain resources jointly, and the time-frequency domain resources include two
Slot, each user terminal transmission code on Slot divide feedback signal.
Further, it is described that blind Detecting is carried out to the feedback channel of each group in real time, including：
It detects whether to receive the feedback signal on the feedback channel from each group in real time；
When the power of the feedback signal received is more than power threshold or signal-to-noise ratio is more than signal-noise ratio threshold value, judgement
The feedback signal is the error in data feedback signal that user terminal is sent.
Optionally, it is described when the error in data feedback signal for detecting user terminal, according to preset feedback processing mould
Formula carries out feedback processing to the group where the user terminal, including：
According to the cyclic shift value in the error in data feedback signal of user terminal, the group where the user terminal is determined
Group；
Reduce the code check to group's transmission data where the user terminal.
Optionally, it is described when the error in data feedback signal for detecting user terminal, according to preset feedback processing mould
Formula carries out feedback processing to the group where the user terminal, including：
According to the cyclic shift value in the error in data feedback signal of user terminal, the preferential of the user terminal is determined
Grade；
When the user terminal is the first priority, data are retransmitted to the user terminal；
When the user terminal is the second priority, the code to the group transmission data where the user terminal is reduced
Rate.
Disclosed a kind of wireless base station through this embodiment so that Idle state user terminal uplink feedback is possibly realized, energy
Enough ensure the reliability of group-calling service transmission, improve the availability of frequency spectrum.
1 is please referred to Fig.1, present embodiment discloses a kind of user terminal, the user terminal includes：Second communication equipment
401st, second memory 402 and second processor 403；
Second communication equipment 401, for communicating with wireless base station；
The second memory 402, for storing program；
The second processor 403 for performing described program, is realized when the second processor performs described program
The uplink feedback method of user in a kind of disclosed broadband cluster system group-calling service applied to user terminal of above-described embodiment；
The method specifically includes：
Receive the downlink data that wireless base station is sent；
The downlink data is detected；
When detecting the downlink data mistake, to the wireless base on the feedback channel of wireless base station distribution
It stands and sends the feedback signal of preset format, the feedback signal of the preset format is included between front-end protection interval and rear end protection
Every.
Further, the feedback signal of the preset format is additionally included between the front-end protection interval and rear end protection
Cyclic prefix and feedback data, length every centre are respectively two time-domain symbols, the cyclic prefix and the feedback data
In data it is identical, the mapping orthogonal sequence with cyclic shift value on each carrier of arranging.
Disclosed a kind of user terminal through this embodiment so that Idle state user terminal uplink feedback is possibly realized, energy
Enough ensure the reliability of group-calling service transmission.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use the present invention.
A variety of modifications of these embodiments will be apparent for those skilled in the art, it is as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide range caused.
Claims (18)
1. a kind of uplink feedback method of user in broadband cluster system group-calling service, which is characterized in that applied to wireless base station,
The method includes：
Multiple groups are established, and are each corresponding feedback channel of the group allocation, are made as the user in each group
It is fed back during the downlink data mistake that terminal receives by corresponding feedback channel；
Blind Detecting is carried out to the feedback channel of each group in real time；
When the error in data feedback signal for detecting user terminal, according to preset feedback processing pattern to the user terminal
The group at place carries out feedback processing.
It is 2. according to the method described in claim 1, it is characterized in that, described for each corresponding feedback letter of the group allocation
Road, including：
For each described one public feedback channel of group allocation.
It is 3. according to the method described in claim 1, it is characterized in that, described for each corresponding feedback letter of the group allocation
Road, including：
Determine the priority of each user terminal in each group, the priority includes the first priority and second preferentially
Grade；
Respectively each first priority user terminal distributes a feedback channel；
The second priority user terminal in each group is grouped respectively, and the second priority each to organize is used
One public feedback channel of family terminal distribution.
4. according to the method in claim 2 or 3, which is characterized in that the feedback channel of preset quantity occupies 1RB time-frequencies jointly
Domain resource, the time-frequency domain resources include two Slot, and each user terminal transmission code on Slot divides feedback signal.
5. according to the method described in claim 1, it is characterized in that, described in real time carry out the feedback channel of each group
Blind Detecting, including：
It detects whether to receive the feedback signal on the feedback channel from each group in real time；
When the power of the feedback signal received is more than power threshold or signal-to-noise ratio is more than signal-noise ratio threshold value, described in judgement
Feedback signal is the error in data feedback signal that user terminal is sent.
It is 6. according to the method described in claim 2, it is characterized in that, described when the error in data feedback letter for detecting user terminal
Number when, according to preset feedback processing pattern to where the user terminal group carry out feedback processing, including：
According to the cyclic shift value in the error in data feedback signal of user terminal, the group where the user terminal is determined；
Reduce the code check to group's transmission data where the user terminal.
It is 7. according to the method described in claim 3, it is characterized in that, described when the error in data feedback letter for detecting user terminal
Number when, according to preset feedback processing pattern to where the user terminal group carry out feedback processing, including：
According to the cyclic shift value in the error in data feedback signal of user terminal, the priority of the user terminal is determined；
When the user terminal is the first priority, data are retransmitted to the user terminal；
When the user terminal is the second priority, the code check to the group transmission data where the user terminal is reduced.
8. a kind of uplink feedback device of user in broadband cluster system group-calling service, which is characterized in that applied to wireless base station,
Including：
Group establishes unit, for establishing multiple groups, and is each corresponding feedback channel of the group allocation, makes when each
It is fed back during the downlink data mistake that the user terminal in the group receives by corresponding feedback channel；
Blind Detecting unit, for carrying out blind Detecting to the feedback channel of each group in real time；
Feedback processing unit, for when the error in data feedback signal for detecting user terminal, according to preset feedback processing
Pattern carries out feedback processing to the group where the user terminal.
9. device according to claim 8, which is characterized in that the group establishes unit and is specifically used for establishing multiple groups
Group, and be each described one public feedback channel of group allocation.
10. device according to claim 8, which is characterized in that the group establishes unit and includes：
First determination subelement, for determining the priority of each user terminal in each group, the priority includes
First priority and the second priority；
First distribution subelement, for being respectively that each first priority user terminal distributes a feedback channel；
Second distribution subelement, for being grouped, and be to the second priority user terminal in each group respectively
The second priority user terminal each organized distributes a public feedback channel.
11. device according to claim 8, which is characterized in that the blind Detecting unit includes：
Detection sub-unit, for detecting whether to receive the feedback signal on the feedback channel from each group in real time；
Judge subelement, be more than signal-to-noise ratio door for working as the power of feedback signal received more than power threshold or signal-to-noise ratio
During limit value, the error in data feedback signal that the feedback signal is sent for user terminal is judged.
12. device according to claim 9, which is characterized in that the feedback processing unit includes：
Second determination subelement for the cyclic shift value in the error in data feedback signal according to user terminal, determines described
Group where user terminal；
First processing subelement, for reducing to the code check of group's transmission data where the user terminal.
13. device according to claim 10, which is characterized in that the feedback processing unit includes：
Third determination subelement for the cyclic shift value in the error in data feedback signal according to user terminal, determines described
The priority of user terminal；
Second processing subelement, for when the user terminal is the first priority, data to be retransmitted to the user terminal；
Third handles subelement, for when the user terminal is the second priority, reducing where the user terminal
The code check of group transmission data.
14. a kind of uplink feedback method of user in broadband cluster system group-calling service, which is characterized in that applied to user's end
End, the method includes：
Receive the downlink data that wireless base station is sent；
The downlink data is detected；
When detecting the downlink data mistake, sent out on the feedback channel of wireless base station distribution to the wireless base station
The feedback signal of preset format is sent, the feedback signal of the preset format includes front-end protection interval and rear end protection interval.
15. according to the method for claim 14, which is characterized in that the feedback signal of the preset format is additionally included in described
Cyclic prefix and feedback data among front-end protection interval and the rear end protection interval, length are respectively two time domain symbols
Number, the cyclic prefix is identical with the data in the feedback data, the band cyclic shift of mapping on each carrier of arranging
The orthogonal sequence of value.
16. the uplink feedback device of user in a kind of broadband cluster system group-calling service, which is characterized in that applied to user's end
End, including：
Receiving unit, for receiving the downlink data of wireless base station transmission；
Detection unit, for being detected to the downlink data；
Feedback unit, for when detecting the downlink data mistake, on the feedback channel of wireless base station distribution to
The wireless base station sends the feedback signal of preset format, and the feedback signal of the preset format includes front-end protection interval with after
Hold protection interval.
17. a kind of wireless base station, the wireless base station includes：
First communication equipment, for communicating with user terminal；
First memory, for storing program；
For performing described program, any one of 1-7 is realized when the first processor performs described program for first processor
The method.
18. a kind of user terminal, the user terminal includes：
Second communication equipment, for communicating with wireless base station；
Second memory, for storing program；
Second processor for performing described program, is realized any in 14-15 when the second processor performs described program
Method described in.
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