CN103973418B - A kind of transmission method and device based on Channel Activation detection - Google Patents
A kind of transmission method and device based on Channel Activation detection Download PDFInfo
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- CN103973418B CN103973418B CN201310033187.0A CN201310033187A CN103973418B CN 103973418 B CN103973418 B CN 103973418B CN 201310033187 A CN201310033187 A CN 201310033187A CN 103973418 B CN103973418 B CN 103973418B
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- business datum
- scheduling information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of transmission methods and device based on Channel Activation detection, are related to the communications field, the method includes：Base station issues the scheduling information indicated comprising scheduling resource for making terminal send business datum to terminal；Base station receives the business datum that terminal uploads；Base station verifies the business datum；When check errors, base station utilizes the business datum, judges whether terminal is lost the scheduling information；Base station utilizes judging result, carries out the processing of mixed automatic retransfer HAQR mode adjudgings and HARQ retransmission process, so that control terminal carries out HARQ re-transmissions according to handling result.The present invention can reduce long term evolution LTE uplinks and accidentally wrap, and effectively promote physical downlink control channel PDCCH resource utilization.
Description
Technical field
The present invention relates to the communications fields, more particularly to uplink mixed automatic retransfer HARQ processing in long term evolution LTE system
Technology.
Background technology
In LTE system, in order to improve the system performance under covering limitation scene, frequently with HARQ, and HARQ can be with
It is specifically divided into incremental redundancy（Incremental Redundancy, IR）Adaptive model and soft merging（Chase
Combining, CC）Pattern and the non-adaptive patterns of IR.
For CC patterns, feature is that re-transmission data are identical with previously sent grouped data, only a kind of redundancy
Version, receiving terminal will retransmit data and storage data carry out the laggard row decoding of soft merging.
For IR patterns, it is receiving terminal cyclic redundancy check that first time new biography data, which contain whole information,（Cyclic
Redundancy Check, CRC）After wrong, erroneous packet is stored in the register of receiving terminal, and this scheme has multiple redundancies
Version retransmits contain identical information bit and different incremental redundancy versions every time, and receiving terminal carries out the information bit of re-transmission
Soft bit merges, and new check bit is merged into after code word into row decoding.For base station side, in IR adaptive models
Under, the HARQ of re-transmission redistributes frequency domain resource, and therefore, it is necessary to use physical downlink control channel PDCCH resource to indicate again
The frequency domain resource that UE re-transmissions HARQ is distributed.It is generally acknowledged that have the Downlink Control Information DCI0 instructions of PDCCH transmissions is all
Adaptive HARQ.And under the non-adaptive patterns of IR, frequency domain resource and the HARQ last time that the HARQ of re-transmission is used, which transmit, to be used
Frequency domain resource it is identical, at this point, the HARQ need not use PDCCH resource, only by physical mixed automatic re-transmission indicating channel
（Physical Hybrid-ARQ Indicator Channel, PHICH）Instruction confirm (Acknowledgement, ACK) or
It is unconfirmed（Negative Acknowledgement, NACK）.
LTE uplink retransmissions are accidentally wrapped to solve uplink, are lost but if the DCI0 that UE issues eNB is authorized, then
Re-transmission also can not necessarily solve accidentally to wrap, and under IR adaptive models, RV is used to refer to the initial position of passed data, if lacked
Lacked the DCI0 of RV=0, physical layer can not solution to data packet.Under the non-adaptive patterns of IR, if DCI0 loses, base
Stand side and the sides UE RV versions with regard to inconsistent, physical layer also can not solution to data packet, unsuccessfully led to ultimately cause HARQ transmission
Cause packet loss.IR adaptive models are that new biography and re-transmission are required for issuing DCI0 instructions, and the non-adaptive patterns of IR are then only new
Biography needs to issue DCI0 instructions, and re-transmission need not issue DCI0.It can be seen that the non-adaptive patterns of IR are adaptive compared to IR
Pattern is exactly relatively to save PDCCH resource there are one larger advantage.But the HARQ retransmitted under IR adaptive models is redistributed
Frequency domain resource, and frequency domain resource is fixed under the non-adaptive patterns of IR, if in the case of more UE, limited frequency domain resource can be led
Cause the probability of the HARQ re-transmissions failure under the non-adaptive patterns of IR larger.
Base station problem to be solved is how to ensure to reduce to the greatest extent accidentally to wrap and how to be more reasonably utilized
PDCCH resource.
Invention content
The purpose of the present invention is to provide a kind of transmission methods and device based on Channel Activation detection, solve the prior art
Present in UE missing inspections DCI0 cause HARQ to fail, and then the problem of lead to packet loss.
According to an aspect of the invention, there is provided a kind of transmission method based on Channel Activation detection, including：
Base station issues the scheduling information for making terminal send business datum to terminal；
Base station receives the business datum that terminal uploads；
Base station verifies the business datum；
When check errors, base station utilizes the business datum, judges whether terminal is lost the scheduling information；
Base station utilizes judging result, carries out the processing of mixed automatic retransfer HARQ mode adjudgings and HARQ retransmission process, so as to
Control terminal carries out HARQ re-transmissions according to handling result.
Preferably, base station receives the business datum that terminal uploads according to the scheduling information in scheduled running time-frequency resource.
Preferably, the base station judges that the step of whether terminal is lost the scheduling information includes：
Base station calculates the signal power or signal-to-noise ratio of the business datum；
When the signal-to-noise ratio that the signal power of the business datum is less than signal power threshold value or the business datum is less than letter
When making an uproar than threshold value, base station determines that the business datum is not adapted with the scheduling information, and judges the lost terminal tune
Spend information.
The step of HARQ mode adjudgings processing includes：
It is IR adaptive models by HARQ mode adjustments when base station judges the lost terminal scheduling information, otherwise,
It is the non-adaptive patterns of IR by HARQ mode adjustments.
The HARQ retransmission process step includes：
When base station judges the lost terminal scheduling information, original RV values are kept, otherwise, update RV values.
The scheduling information includes being used to indicate the Downlink Control Information DCI0 that the redundancy versions RV values of scheduling resource are zero.
The control terminal according to handling result carry out HARQ re-transmissions the step of include：
Base station retransmits scheduling information according to IR adaptive models to terminal, and the scheduling information includes that RV values are zero
Downlink Control Information DCI0；
Terminal is sent to base station according to the scheduling information, by business datum.
Preferably, the control terminal includes according to the step of handling result progress HARQ re-transmissions：
Base station sends physical mixed automatic re-transmission indicating channel PHICH to terminal and indicates information；
Terminal indicates information according to the PHICH, updates RV values, business datum is sent to base station.
According to another aspect of the present invention, a kind of transmitting device detected based on Channel Activation is provided, including setting exists
Base station side with lower unit：
Data transceiving unit for issuing the scheduling information for making terminal send business datum to terminal, and receives end
Hold the business datum uploaded；
Data check unit, for being verified to the business datum；
Decision unit is activated, for when check errors, using the business datum, it is described to judge whether terminal is lost
Scheduling information；
Mode decision unit carries out the processing of mixed automatic retransfer HAQR mode adjudgings for utilizing judging result；
Retransmission process unit carries out HARQ retransmission process, so that control terminal is tied according to processing for utilizing judging result
Fruit carries out HARQ re-transmissions.
Preferably, the data transceiving unit is additionally operable to send physical mixed automatic re-transmission indicating channel PHICH to terminal
It indicates information or retransmits scheduling information.
Compared with prior art, the beneficial effects of the present invention are：
The present invention, which not only can be reduced effectively, accidentally to wrap, but also can effectively promote PDCCH resource utilization rate.
Description of the drawings
Fig. 1 is the transmission method flow chart provided in an embodiment of the present invention detected based on Channel Activation；
Fig. 2 is the transmitting device structure diagram provided in an embodiment of the present invention detected based on Channel Activation；
Fig. 3 is Channel Activation overhaul flow chart in Fig. 2 described devices；
Fig. 4 is IR adaptive models and the non-adaptive mode adjudging flow charts of IR in Fig. 3；
Fig. 5 is HARQ retransmission process flow chart in Fig. 3.
Specific implementation mode
Below in conjunction with attached drawing to a preferred embodiment of the present invention will be described in detail, it should be understood that described below is excellent
Select embodiment only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
LTE ascending HARQs are accidentally wrapped to solve uplink, and uplink needs to indicate to dispatch to UE by DCI0
Resource, but if down channel is there are larger interference or certain other reasons, UE is lost what base station issued
DCI0 can eventually lead to ascending HARQ failure, cause accidentally to wrap in this way.In the present invention, by carrying out DCI0 activation inspections in base station side
It surveys, whether judgement UE loses DCI0, if being lost DCI0, base station side keeps RV values according to certain rule.If do not lost
It loses, then updates RV values.The HARQ retransmitted under IR adaptive models needs to redistribute PDCCH frequency domain resources, needs to re-issue
DCI0.And PDCCH frequency domain resources are fixed under the non-adaptive patterns of IR, it is only necessary to issue DCI0 when new biography.More UE's
In the case of, the probability that limited PDCCH frequency domain resources may result in the failure of HARQ under the non-adaptive patterns of IR is larger, it is comprehensive this two
The advantage and disadvantage of kind pattern, flexible transformation can both reduce on LTE under IR adaptive models and the non-adaptive patterns of IR to reach
Row HARQ failures, and PDCCH resource is made to be more reasonably utilized.
The present invention provides a kind of transmission methods for providing and being detected based on Channel Activation, and detection machine is activated by using DCI0
System is made corresponding selection and is judged.Fig. 1 is the transmission method flow provided in an embodiment of the present invention detected based on Channel Activation
Figure, as shown in Figure 1, step includes：
Step 101, base station issue the scheduling information for making terminal send business datum, the scheduling information packet to terminal
Include the Downlink Control Information DCI0 for being used to indicate that the redundancy versions RV values of scheduling resource are zero.
Step 102, base station receive the business datum that terminal uploads according to the scheduling information in scheduled running time-frequency resource.
Step 103, base station verify the business datum.
Step 104, when check errors, base station utilize the business datum signal power or signal-to-noise ratio, judge terminal
Whether the scheduling information is lost.When the signal power of the business datum is less than signal power threshold value or the business datum
Signal-to-noise ratio be less than snr threshold when, base station judges the lost terminal scheduling information.
Step 105, base station utilize judging result, carry out at the processing of mixed automatic retransfer HAQR mode adjudgings and HARQ re-transmissions
Reason, so that control terminal carries out HARQ re-transmissions according to handling result.
In the step 105, when base station judges the lost terminal scheduling information, base station is by HARQ mode adjustments
For IR adaptive models, and former RV values are kept, then, retransmits scheduling information to terminal, the scheduling information includes RV values
Business datum is sent to base station by the Downlink Control Information DCI0 for being zero so that terminal is according to the scheduling information.When base station is sentenced
When disconnected terminal does not lose the scheduling information, HARQ mode adjustments are the non-adaptive patterns of IR by base station, and update RV values, so
Afterwards, it sends PHICH to terminal and indicates information, so that terminal indicates information according to the PHICH, update RV values, and by business number
According to being sent to base station.
The present invention is directed to the scene of LTE ascending HARQs transmission, additionally provides a kind of biography for providing and being detected based on Channel Activation
Defeated device reduces the failure of LTE ascending HARQs by using DCI0 activation testing mechanisms, while PDCCH resource is obtained more
It is rational to utilize.Fig. 2 is the transmitting device structure diagram provided in an embodiment of the present invention detected based on Channel Activation, such as Fig. 2 institutes
Show, including is arranged in base station side with lower unit：
Data transceiving unit, for issuing the scheduling information for making terminal send business datum to terminal, and according to institute
Scheduling information is stated, receives the business datum that terminal uploads in scheduled running time-frequency resource, wherein the scheduling information includes for referring to
Show the Downlink Control Information DCI0 that the redundancy versions RV values of scheduling resource are zero.
Data check unit, for being verified to the business datum received.
Decision unit is activated, for when data check unit check errors, utilizing the power or letter of the business datum
It makes an uproar and compares, judge whether terminal is lost the scheduling information.Specifically, the business datum that base station side is uploaded by computing terminal
Signal-to-noise ratio or power measurement amount etc. detect the DCI0 whether UE is lost base station side.I.e. when the signal work(of the business datum
When rate is less than the signal-to-noise ratio of signal power threshold value or the business datum less than snr threshold, base station judges lost terminal institute
State scheduling information.
Mode decision unit carries out the processing of mixed automatic retransfer HAQR mode adjudgings for utilizing judging result.Specifically
It says, the DCI0 based on activation judging unit activates judgement, and issuing for DCI0 is carried out according to certain rules modification HARQ patterns
Or do not issue, i.e., when activating decision unit to judge the lost terminal scheduling information, mode decision unit is by HARQ moulds
Formula is adjusted to IR adaptive models, issues DCI0, otherwise, is the non-adaptive patterns of IR by HARQ mode adjustments, does not issue DCI0.
Retransmission process unit carries out HARQ retransmission process, so that control terminal is tied according to processing for utilizing judging result
Fruit carries out HARQ re-transmissions.Specifically, the DCI0 based on activation decision unit activates judgement, according to certain rules modification RV
Value, i.e., when activating decision unit to judge the lost terminal scheduling information, retransmission process unit holding original RV values, otherwise,
Update RV values.
Wherein, when data check unit check errors and activation decision unit judge the lost terminal scheduling information
When, data transceiving unit retransmits scheduling information to terminal, and the scheduling information includes the Downlink Control Information that RV values are zero
The business datum of re-transmission is sent to base station by DCI0 so that terminal is according to the scheduling information.When data check unit verifies mistake
When accidentally and activation decision unit judges that terminal does not lose the scheduling information, data transceiving unit only sends PHICH to terminal and refers to
Show information, so that terminal indicates information according to the PHICH, updates RV values, and the business datum of re-transmission is sent to base station.
The realization principle and operating mechanism of 3 to Fig. 5 detailed description present apparatus below in conjunction with the accompanying drawings：
Fig. 3 is Channel Activation overhaul flow chart in Fig. 2 described devices, as shown in figure 3, step includes：
The first step, base station side issue DCI0 of the RV values equal to 0 to dispatch the new biography business datum of UE, and UE is according to base station
DCI0 goes up sending service data.
The business datum sent out on UE is detected, and carry out to the business datum in second step, base station in specified running time-frequency resource
CRC check, and judge whether UE is lost DCI0.
Third step, according to judging result, judgement uplink transmission mode is non-adaptive with IR adaptive models or with IR
Pattern.If specifically for judgement flow as shown in figure 4, base station judges whether UE is lost DCI0, judgement is IR adaptive models,
Otherwise, it adjudicates as the non-adaptive patterns of IR.
4th step, according to judging result, carry out the selection of the RV versions of HARQ re-transmissions.Specific HARQ retransmission process flows
As shown in figure 5, base station judges that UE is lost DCI0, then RV values take last RV values, i.e. RV values to remain unchanged, otherwise, update
RV values.
That is, if CRC check mistake, base station needs to enable retransmission mechanism to ensure to transmit, and according to
DCI0 testing results, come the selection of the RV versions retransmitted.If UE is lost the DCI0 of base station, DCI0 un-activations, then this
When HARQ retransmit RV version numbers and last time transmission（New biography or re-transmission）RV version numbers it is consistent, i.e., RV version numbers continue as 0,
And DCI0 is re-issued, uplink transmission mode is adjusted to adaptive model.If UE does not lose DCI0, then HARQ is heavy at this time
The RV version numbers of biography are updated to 2, and uplink transmission mode is adjusted to non-adaptive pattern.
Although describing the invention in detail above, but the invention is not restricted to this, those skilled in the art of the present technique
It can be carry out various modifications with principle according to the present invention.Therefore, all to be changed according to made by the principle of the invention, all it should be understood as
Fall into protection scope of the present invention.
Claims (8)
1. a kind of transmission method based on Channel Activation detection, which is characterized in that including：
Base station issues the scheduling information for making terminal send business datum to terminal；
Base station receives the business datum that terminal uploads；
Base station verifies the business datum；
When check errors, base station utilizes the business datum, judges whether terminal is lost the scheduling information；
Whether base station is lost the judging result of the scheduling information using terminal, carries out mixed automatic retransfer HARQ mode adjudgings
Processing and HARQ retransmission process, so that control terminal carries out HARQ re-transmissions according to handling result；
The HARQ mode adjudgings are handled：When base station judges the lost terminal scheduling information, by HARQ pattern tune
Whole is IR adaptive models, is the non-adaptive patterns of IR by HARQ mode adjustments otherwise；
The HARQ retransmission process includes：When base station judges the lost terminal scheduling information, former redundancy versions RV is kept
Otherwise value updates RV values；
Wherein, the IR is incremental redundancy.
2. according to the method described in claim 1, it is characterized in that, base station is provided according to the scheduling information in scheduled time-frequency
Source receives the business datum that terminal uploads.
3. according to the method described in claim 2, it is characterized in that, the base station judges whether terminal is lost the scheduling letter
The step of breath includes：
Base station calculates the signal power or signal-to-noise ratio of the business datum；
When the signal-to-noise ratio that the signal power of the business datum is less than signal power threshold value or the business datum is less than signal-to-noise ratio
When threshold value, base station determines that the business datum is not adapted with the scheduling information, and judges the lost terminal scheduling letter
Breath.
4. according to the method described in claim 1-3 any one, which is characterized in that the scheduling information includes being used to indicate tune
Spend the Downlink Control Information DCI0 that the RV values of resource are zero.
5. according to the method described in claim 4, it is characterized in that, the control terminal carries out HARQ weights according to handling result
The step of biography includes：
Base station retransmits scheduling information according to IR adaptive models to terminal, and the scheduling information includes the downlink that RV values are zero
Control information DCI0；
Terminal is sent to base station according to the scheduling information, by business datum.
6. according to the method described in claim 4, it is characterized in that, the control terminal carries out HARQ weights according to handling result
The step of biography includes：
Base station sends physical mixed automatic re-transmission indicating channel PHICH to terminal and indicates information；
Terminal indicates information according to the PHICH, updates RV values, and business datum is sent to base station.
7. a kind of transmitting device based on Channel Activation detection, which is characterized in that including being arranged in base station side with lower unit：
Data transceiving unit for issuing the scheduling information for making terminal send business datum to terminal, and receives in terminal
The business datum of biography；
Data check unit, for being verified to the business datum；Decision unit is activated, is used for when check errors, profit
With the business datum, judge whether terminal is lost the scheduling information；
Mode decision unit, the judging result for whether being lost the scheduling information using terminal carry out mixing automatic weight
Pass the processing of HARQ mode adjudgings；
Retransmission process unit, the judging result for whether being lost the scheduling information using terminal are carried out at HARQ re-transmissions
Reason, so that control terminal carries out HARQ re-transmissions according to handling result；
The HARQ mode adjudgings are handled：When base station judges the lost terminal scheduling information, by HARQ pattern tune
Whole is IR adaptive models, is the non-adaptive patterns of IR by HARQ mode adjustments otherwise；
The HARQ retransmission process includes：When base station judges the lost terminal scheduling information, former redundancy versions RV is kept
Otherwise value updates RV values；
Wherein, the IR is incremental redundancy.
8. device according to claim 7, which is characterized in that the data transceiving unit is additionally operable to send physics to terminal
Hybrid automatic retransmission indication channel PHICH instruction information retransmits scheduling information.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310033187.0A CN103973418B (en) | 2013-01-29 | 2013-01-29 | A kind of transmission method and device based on Channel Activation detection |
| PCT/CN2013/085647 WO2014117543A1 (en) | 2013-01-29 | 2013-10-22 | Transmission method and apparatus based on channel activation detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310033187.0A CN103973418B (en) | 2013-01-29 | 2013-01-29 | A kind of transmission method and device based on Channel Activation detection |
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| CN103973418B true CN103973418B (en) | 2018-10-19 |
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| US10893509B2 (en) * | 2015-02-11 | 2021-01-12 | Qualcomm Incorporated | Multiple tri-state HARQ processes |
| CN107404367A (en) * | 2016-05-19 | 2017-11-28 | 北京信威通信技术股份有限公司 | A kind of data transmission method and device retransmitted based on hybrid automatic request |
| CN107465490A (en) * | 2016-06-06 | 2017-12-12 | 大唐移动通信设备有限公司 | A kind of Downlink Control Information DCI0 processing method and system |
| CN108964810A (en) * | 2017-05-19 | 2018-12-07 | 中兴通讯股份有限公司 | A kind of DCI0 judgment method, device and computer readable storage medium |
| AU2018417465A1 (en) * | 2018-04-02 | 2020-11-19 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Resource indication method and apparatus and computer storage medium |
| EP3869717A4 (en) * | 2018-11-28 | 2021-10-27 | Huawei Technologies Co., Ltd. | Communication method and apparatus |
| CN110933740B (en) * | 2019-11-26 | 2022-03-15 | RealMe重庆移动通信有限公司 | Uplink data transmission method and device, terminal equipment and storage medium |
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| CN101754274A (en) * | 2009-12-29 | 2010-06-23 | 华为技术有限公司 | Data retransmission method and equipment |
| CN101938778A (en) * | 2009-06-30 | 2011-01-05 | 中兴通讯股份有限公司 | Uplink hybrid automatic repeat request-based data repeating method and base station |
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| RU2471291C2 (en) * | 2007-09-11 | 2012-12-27 | Вай-Лэн, Инк. | Distribution of permanent resources |
| CN101924619B (en) * | 2009-06-16 | 2015-02-25 | 中兴通讯股份有限公司 | Mixed automatic retransmission method and device in multi-antenna LTE system |
| US8457002B2 (en) * | 2010-07-29 | 2013-06-04 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for grant loss detection and related processing in a wireless communication network |
| CN102026410A (en) * | 2010-12-21 | 2011-04-20 | 中兴通讯股份有限公司 | Method and system for releasing semi-persistent scheduling (SPS) service resources |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938778A (en) * | 2009-06-30 | 2011-01-05 | 中兴通讯股份有限公司 | Uplink hybrid automatic repeat request-based data repeating method and base station |
| CN101754274A (en) * | 2009-12-29 | 2010-06-23 | 华为技术有限公司 | Data retransmission method and equipment |
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| CN103973418A (en) | 2014-08-06 |
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