CN104113402B - A kind of realize descending HARQ method during ascending-descending subframes configuration change - Google Patents
A kind of realize descending HARQ method during ascending-descending subframes configuration change Download PDFInfo
- Publication number
- CN104113402B CN104113402B CN201310140938.9A CN201310140938A CN104113402B CN 104113402 B CN104113402 B CN 104113402B CN 201310140938 A CN201310140938 A CN 201310140938A CN 104113402 B CN104113402 B CN 104113402B
- Authority
- CN
- China
- Prior art keywords
- somebody
- sub
- configuration
- frame
- radio frames
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
This application discloses a kind of method for realizing descending HARQ during ascending-descending subframes configuration change, sub-frame reference allocation list is pre-configured with user equipment side, ascending-descending subframes occur after radio frames i terminates again to match somebody with somebody, in radio frames (i+1) the sub-frame reference allocation list is inquired about according to ascending-descending subframes with front and rear sub-frame configuration again, corresponding sub-frame reference configuration numbering is obtained, HARQ is carried out to the Physical Downlink Shared Channel PDSCH in radio frames i according to resulting sub-frame reference configuration numbering.
Description
Technical field
The application is related to mobile communication technology field, more particularly to time division duplex Long Term Evolution project (TDD-LTE), especially
A kind of method for realizing down mixing self-retransmission request (HARQ) when being related to ascending-descending subframes configuration change.
Background technology
TDD-LTE system supports 7 kinds of different ascending-descending subframes configurations.TDD-LTE system can support dynamic subframe weight
Match somebody with somebody.Dynamic subframe is matched somebody with somebody and refers to that each cell in system can be according to the up-downgoing service condition of itself, with less again
Again with interval, change ascending-descending subframes configuration.
Dynamic subframe is matched somebody with somebody for lifting system performance again, can bring following both sides beneficial effect：
On the one hand, because each cell can determine its sub-frame configuration according to the up-downgoing service condition of itself, without
It is that all cells must have identical sub-frame configuration, so the business that base station can adapt to its service user for greater flexibility is special
Point, so as to improve the performance of each cell.
On the other hand, due to it is less it is heavy with interval, each cell can according to downlink business thereon load fluctuation, in real time
Ground changes the configuration of its ascending-descending subframes, and the ratio of up-downgoing business load is matched, so as to improve the frequency spectrum of each cell profit
Use efficiency.
Using dynamic subframe reconstitution techniques, also the problem of new can be brought to system.Such as minizone is due to ascending-descending subframes
It is asynchronous to bring larger co-channel interference, extra co-channel interference etc. in heterogeneous network.What the application was primarily upon and solved is pair
Subframe carry out again with back edge frame Physical Downlink Shared Channel (PDSCH) carry out hybrid automatic repeat-request (HARQ) when above and below
Row subframe can collision problem.Particular problem is as described below.
7.3 sections in 3GPP/LTE standards TS36.213, the process that HARQ is carried out for PDSCH are made and are specified below：It is " right
In the ACK/NACK that TDD, UE should provide according to the PDCCH of PDSCH transmission in subframe n-k or the semi-static version of indicating downlink
Reply, corresponding ACK/NACK is transmitted on sub-frame of uplink n and is replied.Wherein k ∈ K, and table 10.1-1s of the K in TS36.213 enters
Definition is gone.”
Table 10.1-1:Downlink association set indexK:{k0,k1,…kM-1}for TDD
According to this regulation, in TDD-LTE system, ascending-descending subframes configuration changed (subframe is matched somebody with somebody) again after, due to phase
The change of subframe up-downlink direction is answered, PDSCH of the counterweight with before in last radio frames is according to the regulation in 3GPP standards
HARQ is carried out, PDSCH ACK/NACK is fed back it is possible that two kinds of exceptions：A the subframe) detected is sub-frame of uplink, is not had
PDSCH；B) some descending sub frames in radio frames N may not be detected, and its ack/nack signal can not find on corresponding
Row subframe is transmitted.
Both abnormal conditions are described in detail below.For purposes of illustration only, remember last radio frames match somebody with somebody again before
For radio frames i, first radio frames match somebody with somebody again after are radio frames (i+1), and each radio frames includes subframe #0 to subframe #9.
Abnormal A：
Subframe match somebody with somebody again after first radio frames in sub-frame of uplink, according to being advised in the table 10.1-1 of 3GPP TS 36.213
When fixed sub-frame set carries out HARQ to the PDSCH in a upper radio frames, the son in set in corresponding previous radio frames
Frame is probably up rather than descending.
As shown in Figure 1：Radio frames i is sub-frame configuration #3, and radio frames (i+1) are sub-frame configuration #2.According to 3GPP TS
Table 10.1-1 in 36.213, the subframe #2 in radio frames (i+1) need to feed back subframe #4, #5, #6 and #8 in radio frames i
PDSCH information.And subframe #4 is sub-frame of uplink in radio frames i, in the absence of PDSCH, this creates the terminal abnormal A.
Abnormal B：
Subframe match somebody with somebody again after first radio frames in sub-frame of uplink, according to being advised in the table 10.1-1 of 3GPP TS 36.213
When fixed sub-frame set carries out HARQ to the PDSCH in a upper radio frames, it is impossible to cover under all in a radio frames
Row subframe, i.e. some descending sub frames can not find the sub-frame of uplink of mapping.
As shown in Fig. 2 radio frames i is sub-frame configuration #3, radio frames (i+1) are sub-frame configuration #2.According to 3GPP TS
Table 10.1-1 in 36.213, the subframe #2 in radio frames (i+1) need to feed back in radio frames i subframe #4, #5, #6 and # in subframe 1
8 PDSCH information, the subframe that the subframe #7 in radio frames (i+1) needs to feed back are subframe #9, radio frames (i+ in radio frames i
1) #0, #1 and #3 in.So the coverage of the feedback set of all sub-frame of uplink in radio frames (i+1) does not include nothing
Subframe #1 and #7 in line frame i, i.e. subframe #1 and #7 in radio frames i do not have corresponding sub-frame of uplink to carry out HARQ.
Such exception is in a standard without direct solution, the regulation in existing standard, such exception
After appearance, can be solved by the re-transmission of wireless chain control layer (RLC).In larger ascending-descending subframes again with interval, lead to
The performance loss that abnormal belt as crossing RLC re-transmission solution is come is smaller.But if matched somebody with somebody again using dynamic subframe, less
Again with interval, substantial amounts of RLC, which is retransmitted, can cause larger time delay even packet loss, so as to bring larger performance loss.
The content of the invention
This application provides a kind of method for realizing descending HARQ during ascending-descending subframes configuration change, can avoid up and down
Row subframe is again with caused abnormal conditions.
Realizing when the embodiment of the present application provides a kind of ascending-descending subframes configuration change is asked by down mixing self-retransmission
HARQ method, sub-frame reference allocation list as follows is pre-configured with user equipment side：
Ascending-descending subframes occur after radio frames i terminates again to match somebody with somebody, in radio frames (i+1) according to ascending-descending subframes again with front and rear
Sub-frame configuration inquire about the sub-frame reference allocation list, corresponding sub-frame reference configuration numbering is obtained, according to resulting son
Frame reference configuration numbering carries out HARQ to the Physical Downlink Shared Channel PDSCH in radio frames i；
Wherein, the ascending-descending subframes are matched somebody with somebody and included again：Switching cycle be 5ms sub-frame configuration between match somebody with somebody again, switching cycle
Matching somebody with somebody again between 10ms sub-frame configuration, switching cycle is 5ms matching somebody with somebody again between 10ms sub-frame configuration.
As can be seen from the above technical solutions, according to the reference configuration table, can be directed to various heavy with the abnormal B of situation appearance
Situation provide solution, so as to avoid subframe again with the performance loss that brings.
Brief description of the drawings
The situation schematic diagram for the abnormal A that Fig. 1 occurs for ascending-descending subframes in the prior art again timing, wherein, D represents descending
Subframe, U represent sub-frame of uplink, and S represents special subframe, similarly hereinafter；
The situation schematic diagram for the abnormal B that Fig. 2 occurs for ascending-descending subframes in the prior art again timing；
Fig. 3 is situation schematic diagram of the configuration of the smaller numbering of 5ms switching cycles again with the configuration for being larger numbering；
Fig. 4 is the configuration of the larger numbering of 5ms switching cycles again with the abnormal B schematic diagrames of configuration appearance for smaller numbering；
Fig. 5 is the schematic diagram of the abnormal B shown in solution Fig. 4 that the embodiment of the present application two provides；
Fig. 6 is matching somebody with somebody again in situation between the sub-frame configuration that switching cycle is 10ms, and the configuration of smaller numbering is matched somebody with somebody to be larger again
It is not in abnormal B schematic diagram during the configuration of numbering；
Fig. 7 is matching somebody with somebody again in situation between the sub-frame configuration that switching cycle is 10ms, and the configuration of larger numbering is matched somebody with somebody to be smaller again
Occurs abnormal B schematic diagram during the configuration of numbering；
Fig. 8 is that the configuration using radio frames i that the embodiment of the present application provides solves such as the reference configuration of radio frames (i+1)
Abnormal B schematic diagram shown in Fig. 7；
Fig. 9 a are that switching cycle is 5ms matching somebody with somebody again in situation between 10ms sub-frame configuration, and the cycle is 5ms sub-frame configuration
Again be the cycle be 10ms sub-frame configuration when be not in abnormal B schematic diagram；
Fig. 9 b are that switching cycle is 5ms matching somebody with somebody again in situation between 10ms sub-frame configuration, and the cycle is that 10ms subframe is matched somebody with somebody
Occurs abnormal B schematic diagram when putting the sub-frame configuration for being made into cycle 5ms again；
Figure 10 is that the reference configuration that the embodiment of the present application provides solves the schematic diagram of abnormal B as shown in figure 9b.
Embodiment
To make the technical principle of technical scheme, feature and technique effect clearer, below in conjunction with specific reality
Example is applied technical scheme is described in detail.
The embodiment of the present application one provides abnormal A solution.
Due to needing that feeds back to be the ack/nack signal of PDSCH in descending sub frame, if there is abnormal A, i.e. sub-frame of uplink
Appear in the detection range to PDSCH, then may be considered need not retransmit to the PDSCH of this subframe, i.e. this is up
Subframe does not feed back NACK signal to PDSCH.Be equivalent to this subframe feedback is the ack signal to PDSCH.
Therefore, the embodiment of the present application one proposes following solution method for abnormal A：
When carrying out HARQ to the PDSCH in a upper radio frames according to the sub-frame set of regulation, the sub-frame set is judged
In subframe in corresponding previous radio frames whether be descending sub frame, it is otherwise, right if so, then carry out normal HARQ processing
In the subframe feedback signal be ACK.
The embodiment of the present application two provides abnormal B solution.In order to handle abnormal B, for radio frames (i+1), give
Go out a reference configuration.
The application method of reference configuration is as follows：If the subframe m in radio frames (i+1) is sub-frame of uplink, and in reference configuration
Set K corresponding to subframe m is not sky, wherein, K is provided by table 10.1-1 in 3GPP TS 36.213, then according to K to descending sub frame
M-k is detected, wherein k ∈ K.If K is sky, subframe m detects according to original regulation in standard to descending sub frame.
Subframe is matched somebody with somebody again and is divided into following three kinds of situations：
Situation 1：Switching cycle matching somebody with somebody again between 5ms sub-frame configuration
The sub-frame configuration that switching cycle is 5ms is #0, #1, #2 and #6.
Through investigating, for sub-frame configuration #0, #1 and #2, if the configuration for larger numbering is matched somebody with somebody in the configuration of smaller numbering again,
That is, #0 again be #1 or #2, #1 again match somebody with somebody be #2, then be not in abnormal B.As shown in Figure 3.
If larger numbering configuration again match somebody with somebody for smaller numbering configuration, i.e. #2 again be #1 or #0, #1 again match somebody with somebody be #0,
Abnormal B then occurs.As shown in Figure 4.
Now, with radio frames i configuration, carried out as radio frames (i+1) reference configuration, and according to solution
HARQ is then abnormal to be solved.As shown in figure 5, wherein the subframe of grid filling for after being detected with reference configuration no longer
The subframe for abnormal B occur (is hereinafter respectively schemed such.)
Preceding field frame is identical with subframe #0 configurations in being configured due to subframe #6, and rear field is identical with subframe #1 configurations.So
Configuration #6 is appeared in again with preceding then identical with configuring #1 treating method, configuration #6 again with after then with configuration #0
Reason method is identical.
Situation 2：Switching cycle matching somebody with somebody again between 10ms sub-frame configuration
The sub-frame configuration that switching cycle is 10ms is #3, #4, #5.
Configured for #3, #4 and #5, if the configuration for larger numbering is matched somebody with somebody in the configuration of smaller numbering again, i.e. it is #4 that #3 matches somebody with somebody again
Or #5, #4 are again with being #5, then are not in abnormal B.As shown in Figure 6：
If larger numbering configuration again match somebody with somebody for larger numbering configuration, i.e. #5 again be #4 or #3, #4 again match somebody with somebody be #3, then
Abnormal B occurs.As shown in Figure 7.Now, with radio frames i configuration, as radio frames (i+1) reference configuration, and according to this
Apply for that the solution that embodiment provides carries out HARQ, then it is abnormal to be solved.As shown in Figure 8.
Situation 3：Switching cycle matching somebody with somebody again between 5ms and 10ms sub-frame configuration
In the case of the sub-frame configuration that the cycle is 5ms is again 10ms sub-frame configuration in the cycle with being, in #0, #1, #6
It is a kind of to configure a kind of configuration matched somebody with somebody again in #3, #4, #5, and #2 is again with being #4, #5, then is not in abnormal B.Such as Fig. 9 a institutes
Show：If the cycle, which is 10ms sub-frame configuration, is made into cycle 5ms sub-frame configuration again, i.e., a kind of configuration in #3, #4, #5 is matched somebody with somebody again
Abnormal B then occurs again with being #3 for one kind configuration in #0, #1, #2, #6, and #2.As shown in figure 9b.
Now,
Configured if radio frames (i+1) are #0 or #6, the reference configuration of radio frames (i+1) is radio frames i configuration；
If radio frames (i+1) configure for #1, when radio frames i is that #3 or #4 is configured, the reference configuration of radio frames (i+1)
For #4, when radio frames i is that #5 is configured, the reference configuration of radio frames (i+1) is #5；
If radio frames (i+1) configure for #2, the reference configuration of radio frames (i+1) is always #5 configurations.
If radio frames i configures for #2, radio frames (i+1) are configured for #3, then the reference configuration of radio frames (i+1) is matched somebody with somebody for #4
Put.
As shown in Figure 10, the reference configuration provided according to above-mentioned the embodiment of the present application, abnormal B can be avoided by.
Three kinds of situations of summary, obtained whole reference configuration tables are as shown in table 2：
Table 2
'-' is represented without necessarily referring to configuration in table.Now, the sub-frame configuration match somebody with somebody again after, according to the tables of 3GPP TS 36.213
Detection range specified in 10.1-1 carries out HARQ to the PDSCH of descending sub frame, then can cover all descending sub frames
PDSCH, be not in abnormal B.So without necessarily referring to configuration.
Ascending-descending subframes occur after radio frames i terminates again to match somebody with somebody, in radio frames (i+1) according to ascending-descending subframes again with front and rear
Sub-frame configuration inquire about the sub-frame reference allocation list, corresponding sub-frame reference configuration numbering is obtained, according to resulting son
Frame reference configuration numbering carries out HARQ to the Physical Downlink Shared Channel PDSCH in radio frames i.
The foregoing is only the preferred embodiment of the application, not to limit the protection domain of the application, it is all
Within the spirit and principle of technical scheme, any modification, equivalent substitution and improvements done etc., this Shen should be included in
Within the scope of please protecting.
Claims (1)
1. a kind of method for realizing down mixing self-retransmission request HARQ during ascending-descending subframes configuration change, its feature exist
In being pre-configured with sub-frame reference allocation list in user equipment side；
Ascending-descending subframes occur after radio frames i terminates again to match somebody with somebody, match somebody with somebody front and rear son again according to ascending-descending subframes in radio frames (i+1)
Sub-frame reference allocation list described in frame configuration querying, corresponding sub-frame reference configuration numbering is obtained, is joined according to resulting subframe
Examine configuration numbering and HARQ is carried out to the Physical Downlink Shared Channel PDSCH in radio frames i；
Wherein,
The ascending-descending subframes are matched somebody with somebody and included again：Matching somebody with somebody again between the sub-frame configuration that switching cycle is 5ms, the son that switching cycle is 10ms
Frame configuration between match somebody with somebody again, switching cycle be 5ms and 10ms sub-frame configuration between matching somebody with somebody again；
The sub-frame reference allocation list is as follows：
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310140938.9A CN104113402B (en) | 2013-04-22 | 2013-04-22 | A kind of realize descending HARQ method during ascending-descending subframes configuration change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310140938.9A CN104113402B (en) | 2013-04-22 | 2013-04-22 | A kind of realize descending HARQ method during ascending-descending subframes configuration change |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104113402A CN104113402A (en) | 2014-10-22 |
| CN104113402B true CN104113402B (en) | 2018-02-27 |
Family
ID=51710043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310140938.9A Expired - Fee Related CN104113402B (en) | 2013-04-22 | 2013-04-22 | A kind of realize descending HARQ method during ascending-descending subframes configuration change |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104113402B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594533A (en) * | 2012-02-02 | 2012-07-18 | 电信科学技术研究院 | Method, system and device for transmitting and receiving feedback information |
| CN103001752A (en) * | 2012-12-24 | 2013-03-27 | 新邮通信设备有限公司 | Transition wireless frame based dynamic time division duplexing (TDD) hybrid retransmission scheme |
-
2013
- 2013-04-22 CN CN201310140938.9A patent/CN104113402B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594533A (en) * | 2012-02-02 | 2012-07-18 | 电信科学技术研究院 | Method, system and device for transmitting and receiving feedback information |
| CN103001752A (en) * | 2012-12-24 | 2013-03-27 | 新邮通信设备有限公司 | Transition wireless frame based dynamic time division duplexing (TDD) hybrid retransmission scheme |
Non-Patent Citations (1)
| Title |
|---|
| Discussion on timing issues with dynamic TDD UL-DL configuration;Alcatel-Lucent Shanghai Bell;《3GPP TSG RAN WG1 Meeting #69》;20120525;2.1 PDSCH HARQ timing，Fig. 2. New ACK/NACK mapping for PDSCH with dynamic TDD UL-DL reconfiguration，(e)Mapping with Solution 4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104113402A (en) | 2014-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2654235B1 (en) | HARQ For Dynamic Change of the TTD UL/DL Configuration in LTE TDD Systems | |
| JP6752209B2 (en) | Improved HARQ feedback mechanism for carrier aggregation of 6 or more carriers | |
| CA2885269C (en) | Pucch resource allocation for e-pdcch in communications system | |
| US9432093B2 (en) | Dynamic point selection via a coordinating set of base stations | |
| CN108289331A (en) | A kind of ascending transmission method, terminal, network side equipment | |
| EP3211813B1 (en) | Device and method of handling hybrid automatic repeat request transmission | |
| US11063705B2 (en) | Methods and apparatus for HARQ in NOMA transmission for 5G NR | |
| CN104683081B (en) | A kind of carrier polymerizing method, ability information report method and device | |
| CN104348591B (en) | A kind of sending method and user equipment, base station of ascending control information | |
| JP5944579B2 (en) | Method and apparatus for increasing coverage | |
| US10165615B2 (en) | Communication method, and terminal | |
| CN107181574A (en) | Physical uplink link shared channels（PUSCH）Transmission Time Interval（TTI）Binding | |
| CN109327905A (en) | Method, terminal and the computer-readable medium of data transmission | |
| AU2014328266B2 (en) | Data sending method and apparatus in spectrum aggregation | |
| US10064101B2 (en) | VoIP data transmission method and base station | |
| US9577803B2 (en) | ACK/NAK bit bundling in carrier aggregation scenarios | |
| US10680775B2 (en) | Information transmission apparatus, method, and system | |
| CN104753632B (en) | Information processing method and device | |
| WO2015081840A1 (en) | Answer information feedback method, answer information receiving method and related apparatus | |
| CN109905212A (en) | Indicating means, base station and the user equipment of time sequence relationship of hybrid automatic retransmission request | |
| CN103973420B (en) | Method and device for selecting uplink and downlink subframe configuration mode or processing retransmitted information | |
| CN104113402B (en) | A kind of realize descending HARQ method during ascending-descending subframes configuration change | |
| CN106358299A (en) | Method and device for transceiving feedback information of downlink data | |
| CN104113917B (en) | A kind of realize descending HARQ method during ascending-descending subframes configuration change | |
| CN104113401B (en) | A kind of realize descending HARQ method during ascending-descending subframes configuration change |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180227 |