CN102740280B - The method of uplink semi-persistent scheduling deexcitation, system, base station and user terminal - Google Patents
The method of uplink semi-persistent scheduling deexcitation, system, base station and user terminal Download PDFInfo
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Abstract
The invention discloses a kind of method of uplink semi-persistent scheduling deexcitation, system, base station and user terminal, method includes: base station issues uplink semi-persistent scheduling deactivation command to user terminal；User terminal resolves uplink semi-persistent scheduling deactivation command, when uplink semi-persistent scheduling deactivation command is correct, then sends confirmation to base station.The method of uplink semi-persistent scheduling service deactivation provided by the invention, system, base station and user terminal, the uplink semi-persistent scheduling deactivation command that base station is issued by user terminal sends confirmation to base station when resolving correct, the uplink semi-persistent scheduling of described user terminal is carried out deexcitation according to confirmation by base station, ensure that the dispatch state concordance of base station and user terminal, effectively prevent user terminal and produce co-channel interference each other, enhance the reliability of system, real-time, improve the resource utilization of system and the QoS of uplink semi-persistent scheduling.
Description
Technical field
The present invention relates to wireless mobile communications field, especially relate to a kind of method of uplink semi-persistent scheduling deexcitation, system, base station and user terminal.
Background technology
Existing Long Term Evolution (LTE, LongTermEvolution) technology is generally adopted the scheduling mode of shared resource distribution, and this resource allocation scheduling method can utilize wireless communication resources dramatically.IP phone (VoIP, VoiceOverInternetProtocol) business is one of business important in LTE system, owing to voice user quantity is often huger, the scheduling mode of shared resource distribution, need to send relevant control information when transmission every time, cause that the expense of control information is excessive.More fixing for this kind of data package size, the time of advent, interval met the real-time service of certain rule, adopted semi-persistent scheduling technology can reduce the expense of control information.
For speech business, adopt semi-persistent scheduling (SPS, Semi-persistenceScheduling) mode, base station is only dispatched in first time and is sent out Physical Downlink Control Channel (PDCCH at present, PhysicalDownlinkControlChannel) information, subscriber equipment (UE, UserEquipment) according to the PDCCH that base station first time issues, record this PDCCH relevant information, afterwards within the fixed cycle, PDCCH relevant information according to record adopts identical modulation coding mode upload or receive VoP at the fixing resource location of instruction, to reach the purpose saving signaling consumption (referring to Fig. 1, this figure is semi-persistent scheduling schematic diagram).
When base station carries out semi-persistent scheduling services, need time initial to send activation command to UE, and need when terminating to send deactivation command to UE.But because the transmission of wireless channel has randomness, therefore the deactivating operation of uplink semi-persistent scheduling business is not unreliable.UE is the mechanism of not oriented base station feedback after receiving deactivation command, therefore may result in such as UE and fail to receive the Downlink Control Information (DCI of the deexcitation uplink semi-persistent scheduling that base station issues, DownlinkControlInformation, its form is DCIformat0) time, the state then causing the uplink semi-persistent scheduling business of base station and UE maintenance is inconsistent, i.e. base station deexcitation uplink semi-persistent scheduling business, but UE also non-deexcitation.
Between above-described base station and UE, uplink semi-persistent scheduling service condition is inconsistent, can cause following problem:
A, co-channel interference.Base station has issued deactivation command, the resource being previously allocated to this UE can be distributed to other UE scheduling, but current UE is because being not received by deactivation command, before may proceed to use, the resource period of distribution uploads data, two such UE can use same band frequency to carry out data transmission, and causes co-channel interference.
B, VoIP QoS (QoS, QualityofService) can not be guaranteed.The impact of co-channel interference causes the decline of UE service quality, and then affects QoS, it is impossible to ensure the service quality of uplink service.
C, system interference.Because base station has issued deactivation command, therefore base station is after the cycle expires, and no longer receives the UE data uploaded, but UE continues to upload data to base station because confiscating deactivation command, thus wasting resource, and increasing interference and unnecessary decoding error, causing that systematic function declines.
Summary of the invention
Present invention is primarily targeted at and a kind of method of uplink semi-persistent scheduling deexcitation, system, base station and user terminal are provided, it is prevented that user terminal produces co-channel interference each other, ensures the QoS of uplink semi-persistent scheduling.
The present invention proposes a kind of method of uplink semi-persistent scheduling deexcitation, including step:
Base station issues uplink semi-persistent scheduling deactivation command to user terminal；
User terminal resolves uplink semi-persistent scheduling deactivation command, when uplink semi-persistent scheduling deactivation command is correct, then sends confirmation to base station.
Preferably, described user terminal also includes after sending confirmation to base station:
The uplink semi-persistent scheduling of described user terminal, according to described confirmation, is carried out deexcitation by base station.
Preferably, described uplink semi-persistent scheduling deactivation command includes: user terminal sends uplink physical corresponding to confirmation and controls the positional information of channel to base station.
Preferably, described user terminal to base station send confirmation particularly as follows:
User terminal controls the positional information of channel according to the uplink physical in uplink semi-persistent scheduling deactivation command, searches and sends confirmation by corresponding uplink physical control channel to base station.
The present invention separately proposes the system of a kind of uplink semi-persistent scheduling deexcitation, including:
Base station, for issuing uplink semi-persistent scheduling deactivation command to user terminal；
User terminal, is used for resolving uplink semi-persistent scheduling deactivation command, when uplink semi-persistent scheduling deactivation command is correct, then sends confirmation to base station.
Preferably, described base station, it is additionally operable to, according to described confirmation, the uplink semi-persistent scheduling of described user terminal be carried out deexcitation.
Preferably, described uplink semi-persistent scheduling deactivation command includes: user terminal sends uplink physical corresponding to confirmation and controls the positional information of channel to base station.
Preferably, described user terminal, there is the positional information being additionally operable to control channel according to the uplink physical in uplink semi-persistent scheduling deactivation command, search and send confirmation by corresponding uplink physical control channel to base station.
The present invention separately proposes a kind of base station, and described base station is above-described base station.
The present invention separately proposes a kind of user terminal, and described user terminal is above-described user terminal.
The method of uplink semi-persistent scheduling service deactivation provided by the invention, system, base station and user terminal, the uplink semi-persistent scheduling deactivation command that base station is issued by user terminal sends confirmation to base station when resolving correct, the uplink semi-persistent scheduling of described user terminal is carried out deexcitation according to confirmation by base station, ensure that the dispatch state concordance of base station and user terminal, effectively prevent user terminal and produce co-channel interference each other, enhance the reliability of system, real-time, improve the resource utilization of system and the QoS of uplink semi-persistent scheduling.
Accompanying drawing explanation
Fig. 1 is uplink semi-persistent scheduling schematic diagram in prior art；
Fig. 2 is the flow chart of method one embodiment of the uplink semi-persistent scheduling deexcitation of the present invention；
Fig. 3 is another flow chart of the embodiment of the method for the uplink semi-persistent scheduling deexcitation of the present invention；
Fig. 4 is the structural representation of system one embodiment of the uplink semi-persistent scheduling deexcitation of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
Referring to Fig. 2, it is proposed to method one embodiment of the uplink semi-persistent scheduling deexcitation of the present invention, comprising:
Step S101, base station issue uplink semi-persistent scheduling deactivation command to user terminal；
Step S102, user terminal resolve uplink semi-persistent scheduling deactivation command, when uplink semi-persistent scheduling deactivation command is correct, then send confirmation to base station.
In above-described embodiment, user terminal is according to the result that uplink semi-persistent scheduling deactivation command is resolved, when result correctly sends confirmation to base station, make base station know user terminal and be properly received uplink semi-persistent scheduling deactivation command, effectively prevent user terminal and produce co-channel interference each other, enhance the reliability of system, real-time, improve the resource utilization of system and the QoS of uplink semi-persistent scheduling.
It addition, work as the uplink semi-persistent scheduling deactivation command parsing mistake that base station is sent by user terminal, then user terminal continues executing with uplink semi-persistent scheduling operation, namely continues to take the running time-frequency resource of base station distribution.
Further, in the embodiment of the method for above-mentioned uplink semi-persistent scheduling deexcitation, following process is also included: the uplink semi-persistent scheduling of described user terminal, according to described confirmation, is carried out deexcitation by base station after described user terminal sends confirmation to base station.Namely base station is properly received uplink semi-persistent scheduling deactivation command according to user terminal, discharge described user terminal and perform the running time-frequency resource shared by uplink semi-persistent scheduling, perform uplink scheduling for follow-up user terminal and running time-frequency resource is provided, save system time frequency resource, avoid generation co-channel interference between user terminal, thus reaching to improve the QoS of uplink semi-persistent scheduling.
Further, in the embodiment of the method for above-mentioned uplink semi-persistent scheduling deexcitation, described uplink semi-persistent scheduling deactivation command includes: user terminal sends uplink physical corresponding to confirmation and controls the positional information of channel to base station.
Further, referring to Fig. 3, in the embodiment of the method for above-mentioned uplink semi-persistent scheduling deexcitation, described user terminal to base station send confirmation particularly as follows:
Step S201, user terminal control the positional information of channel according to the uplink physical in uplink semi-persistent scheduling deactivation command, search and send confirmation by corresponding uplink physical control channel to base station.
Above-mentioned confirmation can use ACK (Acknowledgement) to represent, base station receives ACK information and just knows user terminal and be successfully received uplink semi-persistent scheduling deactivation command.Above-described uplink semi-persistent scheduling deactivation command can be Downlink Control Information (DCI, DownlinkControlInformation), and its form adopted is DCI0, such as table 1.Utilize some field not used in DCI0 form, carry out identifying subscriber terminal by this some field and send the positional information of the uplink physical control channel needed for confirmation to base station.User terminal needs to send to base station when confirming breath, searches corresponding uplink physical by described positional information and controls channel, and controls channel by this uplink physical and send described confirmation to base station.
Table 1:
| DCI format 0 |
| Flag for format0/format1 A differentiation |
| Downlink Assignment Index(DAI) |
| New data indicator |
| Resource block assignment and hopping resource allocation:Set to all ' l ' s |
| Modulation and coding scheme and redundancy version:set to ' 11111 ' 3--> |
| TPC command for scheduled PUSCH:set to ' 00 ' |
| Cyclic shift for DM RS:set to ' 000 ' |
| UL index |
| Hopping flag |
| CQI request |
Some field above-described can be frequency hopping indicated value (ValueofHoppingflag) and channel quality instruction value request (ValueofCQIrequest), and the English full name of described CQI is ChannelQualityIndicator.Such as table 2, left side first row field is frequency hopping indicated value, and left side secondary series field is CQI request value, and the uplink physical that the right first row field references is corresponding controls the positional information of channel.As when frequency hopping indicated value is " 0 ", and CQI request value is " 0 ", the uplink physical of its correspondence controls channelFor ThefirstPUCCHresourceindexconfiguredbythehigherlayers；When frequency hopping indicated value is " 0 ", and CQI required value is " 1 ", the uplink physical of its correspondence controls channelFor ThesecondPUCCHresourceindexconfiguredbythehigherlayers；The rest may be inferred below.
Table 2:
In above-described embodiment, when user terminal sends confirmation to base station, just according to frequency hopping indicated value in DCI0 and CQI request value, uplink physical representated by it can be selected to control channel and to send confirmation to base station.
It addition, after base station issues uplink semi-persistent scheduling deactivation command to user terminal, if the confirmation that the user terminal not receiving correspondence within the time set sends, then it is assumed that corresponding user terminal does not receive uplink semi-persistent scheduling deactivation command.Now base station returns and again issues uplink semi-persistent scheduling deactivation command to user terminal.
In above-described embodiment, base station issues uplink semi-persistent scheduling deactivation command to user terminal, does not receive confirmation, then again issue uplink semi-persistent scheduling deactivation command to user terminal within the setting time；When receiving confirmation within the setting time, then the uplink semi-persistent scheduling of described user terminal is carried out deactivating operation, namely on fixing running time-frequency resource, do not receive the data of described user terminal uploads, perform uplink scheduling for other user terminals follow-up and provide running time-frequency resource；User terminal no longer uploads data to base station after sending confirmation to base station simultaneously；Ensure that the concordance of the uplink semi-persistent scheduling state of base station and user terminal, stopped user terminal co-channel interference occurs each other, enhance the reliability of system, real-time, improve the resource utilization of system and the QoS of uplink semi-persistent scheduling.
Referring to Fig. 4, it is proposed to system 100 1 embodiment of the uplink semi-persistent scheduling deexcitation of the present invention, comprising: base station 10 and user terminal 20.Wherein, base station 10, for issuing uplink semi-persistent scheduling deactivation command to user terminal 20.User terminal 20, is used for resolving uplink semi-persistent scheduling deactivation command, when uplink semi-persistent scheduling deactivation command is correct, then sends confirmation to base station 10.
In above-described embodiment, user terminal 20 is according to the result that uplink semi-persistent scheduling deactivation command is resolved, when result correctly sends confirmation to base station 10, make base station 10 know user terminal 20 and be properly received uplink semi-persistent scheduling deactivation command, effectively prevent user terminal 20 and produce co-channel interference each other, enhance the reliability of system, real-time, improve the resource utilization of system and the QoS of uplink semi-persistent scheduling.
It addition, work as the uplink semi-persistent scheduling deactivation command parsing mistake that base station 10 is sent by user terminal 20, then user terminal 20 continues executing with uplink semi-persistent scheduling operation, namely continues to take the running time-frequency resource of base station 10 distribution.
Further, in system 100 embodiment of above-mentioned uplink semi-persistent scheduling deexcitation, described base station 10 is additionally operable to, according to described confirmation, the uplink semi-persistent scheduling of described user terminal 20 be carried out deexcitation.Namely base station 10 is properly received uplink semi-persistent scheduling deactivation command according to user terminal 20, discharge described user terminal 20 and perform the running time-frequency resource shared by uplink semi-persistent scheduling, perform uplink scheduling for follow-up user terminal 20 and running time-frequency resource is provided, save system time frequency resource, avoid generation co-channel interference between user terminal 20, thus reaching to improve the QoS of uplink semi-persistent scheduling.
Further, in system 100 embodiment of above-mentioned uplink semi-persistent scheduling deexcitation, described uplink semi-persistent scheduling deactivation command includes: user terminal 20 sends uplink physical corresponding to confirmation and controls the positional information of channel to base station 10.
Further, in system 100 embodiment of above-mentioned uplink semi-persistent scheduling deexcitation, described user terminal 20, there is the positional information being additionally operable to control channel according to the uplink physical in uplink semi-persistent scheduling deactivation command, search and send confirmation by corresponding uplink physical control channel to base station 10.
Above-mentioned confirmation can represent with ACK, and base station 10 receives ACK information and just knows user terminal 20 and be successfully received uplink semi-persistent scheduling deactivation command.Above-described uplink semi-persistent scheduling deactivation command can be Downlink Control Information (DCI, DownlinkControlInformation), and its form adopted is DCI0, such as table 1.Wherein utilize some field not used in DCI0 form, carry out identifying subscriber terminal 20 by this some field and send the positional information of the uplink physical control channel needed for confirmation to base station 10.When user terminal 20 needs to send confirmation to base station 10, search corresponding uplink physical by described positional information and control channel, and send described confirmation by this uplink physical control channel to base station 10.
The above some field can be frequency hopping indicated value (ValueofHoppingflag) and CQI request value (ValueofCQIrequest), such as table 2, left side first row field is frequency hopping indicated value, left side secondary series field is CQI request value, and the uplink physical that the right first row field references is corresponding controls the positional information of channel.As when frequency hopping indicated value is " 0 ", and CQI request value is " 0 ", the uplink physical of its correspondence controls channelFor ThefirstPUCCHresourceindexconfiguredbythehigherlayers；When frequency hopping indicated value is " 0 ", and CQI required value is " 1 ", the uplink physical of its correspondence controls channelFor ThesecondPUCCHresourceindexconfiguredbythehigherlayers；The rest may be inferred below.
In above-described embodiment, when user terminal 20 sends confirmation to base station 10, just according to frequency hopping indicated value in DCI0 and CQI request value, uplink physical representated by it can be selected to control channel and to send confirmation to base station 10.
Additionally, after base station 10 issues uplink semi-persistent scheduling deactivation command to user terminal 20, if the confirmation that the user terminal 20 not receiving correspondence within the time set sends, then it is assumed that corresponding user terminal 20 does not receive uplink semi-persistent scheduling deactivation command.Now base station 10 returns and again issues uplink semi-persistent scheduling deactivation command to user terminal 20.
In above-described embodiment, base station 10 issues uplink semi-persistent scheduling deactivation command to user terminal 20, does not receive confirmation, then again issue uplink semi-persistent scheduling deactivation command to user terminal 20 within the setting time；When receiving confirmation within the setting time, then the uplink semi-persistent scheduling of described user terminal 20 is carried out deactivating operation, namely on fixing running time-frequency resource, do not receive the data that described user terminal 20 is uploaded, perform uplink scheduling for other user terminals 20 follow-up and provide running time-frequency resource；User terminal 20 no longer uploads data to base station 10 after sending confirmation to base station 10 simultaneously；Ensure that the concordance of base station 10 and the uplink semi-persistent scheduling state of user terminal 20, stopped user terminal 20 co-channel interference occurs each other, enhance the reliability of system, real-time, improve the resource utilization of system and the QoS of uplink semi-persistent scheduling.
The present invention proposes a kind of base station, and this base station is the base station 10 described in system 100 embodiment of above-described uplink semi-persistent scheduling deexcitation.Do not repeat them here.
The present invention proposes a kind of user terminal, the user terminal 20 described in system 100 embodiment of the above-described uplink semi-persistent scheduling deexcitation of this user terminal.Do not repeat them here.
Should be understood that; these are only the preferred embodiments of the present invention; can not therefore limit the scope of the claims of the present invention; every equivalent structure utilizing description of the present invention and accompanying drawing content to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all in like manner include in the scope of patent protection of the present invention.
Claims (6)
1. the method for a uplink semi-persistent scheduling deexcitation, it is characterised in that include step:
Base station issues uplink semi-persistent scheduling deactivation command to user terminal；
User terminal resolves uplink semi-persistent scheduling deactivation command, when uplink semi-persistent scheduling deactivation command is correct, then sends confirmation to base station；
Base station issues uplink semi-persistent scheduling deactivation command to user terminal, if the confirmation that the user terminal not receiving correspondence within the setting time sends, then again issues uplink semi-persistent scheduling deactivation command to user terminal；When receiving confirmation within the setting time, then the uplink semi-persistent scheduling of described user terminal is carried out deactivating operation；
Described uplink semi-persistent scheduling deactivation command includes: user terminal sends uplink physical corresponding to confirmation and controls the positional information of channel to base station.
2. the method for uplink semi-persistent scheduling deexcitation according to claim 1, it is characterised in that described user terminal to base station send confirmation particularly as follows:
User terminal controls the positional information of channel according to the uplink physical in uplink semi-persistent scheduling deactivation command, searches and sends confirmation by corresponding uplink physical control channel to base station.
3. the system of a uplink semi-persistent scheduling deexcitation, it is characterised in that including:
Base station, for issuing uplink semi-persistent scheduling deactivation command to user terminal；
User terminal, is used for resolving uplink semi-persistent scheduling deactivation command, when uplink semi-persistent scheduling deactivation command is correct, then sends confirmation to base station；
Base station is additionally operable to issue uplink semi-persistent scheduling deactivation command to user terminal, if the confirmation that the user terminal not receiving correspondence within the setting time sends, then again issues uplink semi-persistent scheduling deactivation command to user terminal；When receiving confirmation within the setting time, then the uplink semi-persistent scheduling of described user terminal is carried out deactivating operation；
Described uplink semi-persistent scheduling deactivation command includes: user terminal sends uplink physical corresponding to confirmation and controls the positional information of channel to base station.
4. the system of uplink semi-persistent scheduling deexcitation according to claim 3, it is characterised in that
Described user terminal, has the positional information being additionally operable to control channel according to the uplink physical in uplink semi-persistent scheduling deactivation command, searches and sends confirmation by corresponding uplink physical control channel to base station.
5. a base station, it is characterised in that described base station is the base station described in any one of claim 3-4.
6. a user terminal, it is characterised in that described user terminal is the user terminal described in any one of claim 3-4.
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| CN114208356A (en) * | 2021-11-10 | 2022-03-18 | 北京小米移动软件有限公司 | Method and device for re-deactivating and determining semi-persistent scheduling |
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| CN101998643B (en) * | 2009-08-26 | 2015-08-12 | 中兴通讯股份有限公司 | The system and method for a kind of semi-persistent scheduling uplink activation and reactivation |
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