CN102781111A - Determination method, device and system for activating uplink semi-persistent scheduling (SPS) - Google Patents
Determination method, device and system for activating uplink semi-persistent scheduling (SPS) Download PDFInfo
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Abstract
The invention discloses a determination method, a device and a system for activating uplink semi-persistent scheduling (SPS). The method comprises that e-utran node B (eNB) sends downlink control information (DCI) 0 which activates the uplink SPS, and hybrid automatic repeat request (HARQ) information which is fed back by user equipment (UE) is detected on an uplink time-frequency resource indicated by the DCI0; if the eNB fails to detect the HARQ information, the DCI0 is resent and the uplink SPS is activated; and if the time of the sent DCI0 is less than a preset time when the eNB detects the HARQ information, the eNB determines that the SPS is activated. By the aid of the method, the device and the system, the problems that the uplink time-frequency resource is wasted, the scheduling quality of uplink businesses cannot be guaranteed and the transmission of uplink businesses is uncertain are solved.
Description
Technical field
The present invention relates to the communications field, in particular to definite method, equipment and the system that uplink semi-persistent scheduling (SPS, Semi-Persistent Scheduling) activates.
Background technology
The general employing of GSM shared formula resource allocation scheduling mode at present, and its advantage is to improve the utilance of wireless communication resources dramatically.For this scheduling mode, the voice service of original circuit domain is cancelled, and replaces the speech business (VoIP, Voice Over Internet Protocol) and the data service of IP network.Because it is many to insert the number of users in the sub-district simultaneously, need send control information to each professional transmission and share the formula scheduled resources method of salary distribution, therefore cause the expense of control information excessive.More fixing to the packet size, satisfy the VoIP or the data service of certain rule the time of advent at interval, adopt up SPS technology can effectively reduce the control information expense, promote wireless network idle port communication performance.
SPS refers to that the base station sends to subscriber equipment (UE, User Equipment) with the relevant configuration of scheduling in advance.When needs used SPS professional, evolved base station (eNB, E-UTRAN NodeB) activated the SPS business through send the Downlink Control Information (DCI, Downlink Control Information) that comprises customizing messages to UE.Activate the professional DCI of SPS when UE identifies, UE preserves the running time-frequency resource information among the DCI, according to the configuration of the SPS that receives in advance, on the fixing cycle, uses the running time-frequency resource of preserving to carry out the transmission or the reception of business datum.When using SPS, the method for similar activation SPS can be adopted in the base station, comes deexcitation SPS.As shown in Figure 1; The VoIP data packet arrival cycle is 20ms; The base station is as long as give the indication of UE semi-persistent scheduling through DCI; UE promptly carries out the transmission of this data dispatching according to the indication of DCI and SPS configuration information or receives, and after every separated 20ms, the transmission of on identical running time-frequency resource position, carrying out new VoIP packet perhaps receives.The packet of the re-transmission of corresponding SPS (for example; Mix automatic repeat requests (HARQ; Hybrid Automatic Repeat Request) retransmission packet) handle according to the re-transmission of common dispatching services bag, that is, the transmitting HARQ retransmission packet is carried out after replying nack message in the base station.
SPS is this to use pre-assigned resource at fixed time, and adopts the scheduling mode of dynamic dispatching resource constantly at other, is called semi-persistent scheduling visually.After SPS started, the time of appointment can periodically be distributed to the UE of appointment, was used for periodically, the fixed-size business of payload, to reach the overhead that processing such as reducing control, traffic resource assignment, resource indication brings.SPS is divided into descending SPS and up SPS, and this example is mainly concerned with up SPS.The activation of existing up SPS and the sketch map of release see also Fig. 2 at present, comprising:
Step S202, UE have the service needed that satisfies up SPS characteristic to send, and trigger UE and send up Buffer Status Report (BSR, Buffer Status Report) to eNB;
Step S204, UE use physical layer Uplink Shared Channel (PUSCH, Physical uplink shared channel) to carry up BSR to the base station;
Step S206, base station judges can activate SPS to current UE;
Step S208, base station use PDCCH to carry the DCI0 to UE that activates up SPS;
The up SPS of step S210, base station activation current UE;
Step S212, UE activate up SPS;
Step S214-step S216, UE periodically send up SPS business to the base station;
Step S218, base station utilize physical layer descending control channel (PDCCH, Physical downlink control channel) to carry the DCI0 to UE that discharges up SPS;
Step S220, base station discharge up SPS;
Step S222, UE discharge up SPS.
Because the randomness of wireless channel transmission, the DCI0 of the up SPS of activation that eNB sends may the reasons such as interference owing to channel lose in transmission course, causes UE can't successfully receive this DCI.Therefore there is insecure objective problem in the activation of up SPS.If UE does not successfully receive the DCI0 that activates up SPS, the up SPS service condition that can cause eNB and UE to safeguard respectively separately is inconsistent.The up SPS state that promptly is exactly the base station is in activated state, and the up SPS state of UE also is in deactivated state.Up SPS state is inconsistent between eNB and the UE, can cause following three problems:
(1) uplink time waste: eNB sends the DCI0 that activates up SPS to UE; Because uncertain or other certain reasons of wireless channel; UE does not successfully receive this DCI0; Therefore the up SPS state safeguarded separately of eNB and UE occurs inconsistently, and then causes at the cycle of up SPS time slot, and UE can not use the up SPS running time-frequency resource of base station to its distribution.And eNB also can't also distribute to other UE uses with these running time-frequency resources, causes the waste of uplink time, and is as shown in Figure 3.
(2) the scheduling quality of uplink service can't be guaranteed: when the business datum needs that satisfy up SPS characteristic send; UE can be through sending up BSR notice eNB to eNB; When the eNB judgement can be used up SPS to UE, eNB can send the DCI0 that activates up SPS to UE.Because uncertain or other certain reasons of wireless channel, UE does not receive this DCI0, causes up SPS in time to be activated, and then UE can only obtain resource through the dynamic dispatching mode.Compare with the SPS mode, the dynamic dispatching mode can't well guarantee the scheduling quality of uplink service.
(3) increased the uncertainty of uplink traffic transmission: if the up SPS un-activation of UE and do not send data service at up SPS cycle time slot; ENB is because the up SPS state of the current UE of safeguarding has activated and on the appointment running time-frequency resource of this time slot, detected data, and eNB can not detect any valid data.According to the processing of agreement, eNB can initiate the re-transmission flow process of uplink service.Because UE does not send any data at uplink semi-persistent scheduling on the cycle, so UE do not have corresponding upstream data yet and can retransmit, and therefore can cause the base station on the time slot of re-transmission, can't detect any effective uplink service yet.ENB not only possibly distribute the control channel resource for activating up SPS once more, and because eNB can't in time know the up SPS of UE to be activated failure and prolonged the time that up SPS successfully activates, has increased the uncertainty of UE uplink traffic transmission.
Three problems more than mentioning all come from when activating up SPS, and eNB can't in time obtain the reception condition of UE to the DCI0 that activates up SPS.
In existing network design, the scheduling quality that uplink time waste, uplink service may occur can't be guaranteed and probabilistic problem of uplink traffic transmission, does not propose effective solution at present as yet.
Summary of the invention
Main purpose of the present invention is to provide definite method, equipment and the system of up SPS activation, and the scheduling quality that may occur uplink time waste, uplink service in the correlation technique can't be guaranteed and probabilistic problem of uplink traffic transmission to solve.
According to an aspect of the present invention; The definite method that provides a kind of up SPS to activate; Comprise: base station eNB is sent the Downlink Control Information DCI0 that activates up SPS, on the uplink time of said DCI0 indication, detects the automatic repeat requests HARQ information of mixing of user equipment (UE) feedback; If said eNB does not detect said HARQ information, resend said DCI0 and activate said up SPS; If said eNB detects said HARQ information, and the number of times that said eNB sends said DCI0 is less than preset times, and then said eNB confirms that said up SPS is activated.
Preferably, said eNB sends before the Downlink Control Information DCI0 that activates up SPS, comprising: when said UE had the uplink service needs that satisfy the SPS traffic performance to send, said eNB received the up Buffer Status Report BSR that said UE sends; Said eNB confirms to distribute up SPS resource to said UE, and it is deactivated state that said eNB keeps the up SPS state of said UE.
Preferably; Said eNB detects the HARQ information of UE feedback on the uplink time of said DCI0 indication; Comprise one of following: said eNB does not detect said HARQ information in the uplink time of said DCI0 indication; Can not activate said up SPS, determine whether to continue to activate said up SPS; When said DCI0 and DSCH Downlink Shared Channel data when same descending sub frame sends; Said eNB receives non-definite nack message on the uplink time of said DCI0 indication; Confirm that said DSCH Downlink Shared Channel data are not successfully received by said UE; Said DCI0 is successfully received by said UE, and the up SPS state that said UE is set is an activated state, and carries out the re-transmission of DSCH Downlink Shared Channel data according to the nack message that receives; When said DCI0 and DSCH Downlink Shared Channel data not when same descending sub frame sends; Said eNB receives on the uplink time of said DCI0 indication and confirms ACK information; Confirm that said DCI0 is successfully received by said UE, the up SPS state that said UE is set is an activated state; When said DCI0 and DSCH Downlink Shared Channel data when same descending sub frame sends; Said eNB receives ACK information on the uplink time of said DCI0 indication; Confirm that said DSCH Downlink Shared Channel data are successfully received by said UE; Said DCI0 is successfully received by said UE, and the up SPS state that said UE is set is an activated state.
Preferably, if said eNB confirms that said up SPS is not activated, then said eNB detects the HARQ information of UE feedback on physical layer ascending control channel PUCCH resource, and determines whether to continue to activate said up SPS.
Preferably, said eNB detects the HARQ information of UE feedback on physical layer ascending control channel PUCCH resource, comprising:
When said DCI0 and DSCH Downlink Shared Channel data when same descending sub frame sends, said eNB detects the ACK information of UE feedback on physical layer ascending control channel PUCCH resource, confirm that said DSCH Downlink Shared Channel data are successfully received by UE;
When said DCI0 and DSCH Downlink Shared Channel data when same descending sub frame sends, said eNB detects the nack message of UE feedback on said PUCCH resource, confirm that said DSCH Downlink Shared Channel data are not successfully received by UE.
Preferably, when the number of times that said eNB sends said DCI0 was not less than preset times, then said eNB confirmed to abandon the activation of said up SPS.
Preferably, said preset times is confirmed as follows: said eNB is that down physical channel parameter and the detected down physical channel parameter of said eNB that said UE reports to said eNB assigns weight; Said eNB obtains the parameter value of said each down physical channel parameter, calculates the sum of products of the said parameter value weight corresponding with it, is set to N.
Preferably, said down physical channel parameter comprises: channel quality indicator (CQI) and descending block error rate BLER.
According to another aspect of the present invention, the definite method that provides other a kind of uplink semi-persistent scheduling SPS to activate comprises: user equipment (UE) detects the Downlink Control Information DCI0 of the up SPS of activation that whether receives the base station eNB transmission; When the test results is yes, said UE confirms that said up SPS is activated; When said testing result for not the time, said UE confirms that said up SPS is not activated.
Preferably; When the test results is yes; Said UE confirms that said up SPS is activated; Comprise one of following: when said DCI0 and DSCH Downlink Shared Channel data not when same descending sub frame sends, said UE uses the uplink time of said DCI0 indication to respond to said eNB to confirm ACK information, and the up SPS state that self is set is an activated state; When said DCI0 and DSCH Downlink Shared Channel data are sent and said DSCH Downlink Shared Channel data when successfully being resolved at same descending sub frame; Said UE uses the uplink time of said DCI0 indication to respond ACK information to said eNB, and the up SPS state that self is set is an activated state; When said DCI0 and DSCH Downlink Shared Channel data are sent and said DSCH Downlink Shared Channel data when successfully not resolved at same descending sub frame; Said UE uses the uplink time of said DCI0 indication to respond non-definite nack message to said eNB, and the up SPS state that self is set is an activated state.
Preferably; When said testing result for not the time, said UE confirms that said up SPS is not activated, and comprises one of following: when said DCI0 and DSCH Downlink Shared Channel data during not in same descending sub frame transmission; Said UE does not receive said DCI0, said UE undo; When said DCI0 and DSCH Downlink Shared Channel data are sent and said DSCH Downlink Shared Channel data when successfully being resolved at same descending sub frame; Said UE uses physical layer ascending control channel PUCCH resource to respond ACK information to said eNB, and to keep the up SPS state of self be deactivated state; When said DCI0 and DSCH Downlink Shared Channel data are sent and said DSCH Downlink Shared Channel data when successfully not resolved at same descending sub frame; Said UE uses said PUCCH resource to respond nack message to said eNB, and to keep the up SPS state of self be deactivated state.
According to another aspect of the present invention; A kind of base station eNB is provided; Comprise: first detection module, be used to send the Downlink Control Information DCI0 that activates up SPS, on the uplink time of said DCI0 indication, detect the automatic repeat requests HARQ information of mixing of user equipment (UE) feedback; Retransmit module is used for resending said DCI0 and activating said up SPS if said detection module does not detect said HARQ information; First determination module is used for if said detection module detects said HARQ information, and the number of times of the said DCI0 that has sent confirms then that less than preset times said up SPS is activated.
According to another aspect of the present invention, a kind of user equipment (UE) is provided, has comprised: second detection module is used to detect the Downlink Control Information DCI0 that whether receives the up SPS of activation that base station eNB sends; Second determination module is used for when the test results is yes, confirms that said up SPS is activated; The 3rd determination module, be used for when said testing result for not the time, confirm that said up SPS is not activated.
According to another aspect of the present invention; Provide a kind of uplink semi-persistent scheduling SPS to activate fixed system really; Comprise base station eNB and user equipment (UE): said eNB; Be used to send the Downlink Control Information DCI0 that activates up SPS, on the uplink time of said DCI0 indication, detect the automatic repeat requests HARQ information of mixing of said UE feedback; If do not detect said HARQ information, resend said DCI0 and activate said up SPS; If detect said HARQ information, and the number of times of the said DCI0 that sends confirms then that less than preset times said up SPS is activated; Said UE is used to detect the Downlink Control Information DCI0 that whether receives the up SPS of activation that said eNB sends; When the test results is yes, confirm that said up SPS is activated; When said testing result for not the time, confirm that said up SPS is not activated.
In embodiments of the present invention, eNB sends the DCI0 that activates up SPS, on the uplink time of DCI0 indication, detects the HARQ information of UE feedback; If eNB does not detect HARQ information, resend DCI0 and activate up SPS; If the number of times of the DCI0 that eNB sent when detecting HARQ information is less than preset times, then eNB confirms that up SPS is activated.Promptly; In embodiments of the present invention; ENB can confirm whether up SPS is activated in the limited time (having confirmed to send the preset times of DCI0); Reliability and promptness that up SPS activates have been strengthened; The uplink time waste of avoiding bringing like the up SPS activation process of being mentioned in the correlation technique, the scheduling quality of uplink service can't be guaranteed and probabilistic problem of uplink traffic transmission, have shortened UE and eNB and when up SPS activates failure, have carried out the processing time that reactivation or judgement confirm to abandon up SPS.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the SPS sketch map according to correlation technique;
Fig. 2 is the flow chart according to activation and the release of the up SPS of correlation technique;
Fig. 3 is the sketch map according to the inconsistent ascending resource waste that causes of the eNB of correlation technique and UE both sides' up SPS state;
Fig. 4 is first kind of process chart according to definite method of the SPS activation of the embodiment of the invention;
Fig. 5 is second kind of process chart according to definite method of the SPS activation of the embodiment of the invention;
Fig. 6 is the flow chart according to the embodiment one of the embodiment of the invention;
Fig. 7 is the flow chart according to the embodiment two of the embodiment of the invention;
Fig. 8 is the flow chart according to the embodiment three of the embodiment of the invention;
Fig. 9 is the process chart according to the tactful judge module of the embodiment of the invention;
Figure 10 is the structural representation according to the base station of the embodiment of the invention;
Figure 11 is the structural representation according to the UE of the embodiment of the invention;
Figure 12 is that the up SPS according to the embodiment of the invention activates the structural representation of fixed system really.
Embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Because the randomness of wireless channel transmission, the DCI0 of the up SPS of activation that eNB sends may the reasons such as interference owing to channel lose in transmission course, causes UE can't successfully receive this DCI.Therefore there is insecure objective problem in the activation of up SPS.If UE does not successfully receive the DCI0 that activates up SPS, the up SPS service condition that can cause eNB and UE to safeguard respectively separately is inconsistent.The up SPS state that promptly is exactly the base station is in activated state, and the up SPS state of UE also is in deactivated state.Up SPS state is inconsistent between eNB and the UE, can cause following three problems:
(1) uplink time waste: eNB sends the DCI0 that activates up SPS to UE; Because uncertain or other certain reasons of wireless channel; UE does not successfully receive this DCI0; Therefore the up SPS state safeguarded separately of eNB and UE occurs inconsistently, and then causes at the cycle of up SPS time slot, and UE can not use the up SPS running time-frequency resource of base station to its distribution.And eNB also can't also distribute to other UE uses with these running time-frequency resources, causes the waste of uplink time, and is as shown in Figure 3.
(2) the scheduling quality of uplink service can't be guaranteed: when the business datum needs that satisfy up SPS characteristic send; UE can be through sending up BSR notice eNB to eNB; When the eNB judgement can be used up SPS to UE, eNB can send the DCI0 that activates up SPS to UE.Because uncertain or other certain reasons of wireless channel, UE does not receive this DCI0, causes up SPS in time to be activated, and then UE can only obtain resource through the dynamic dispatching mode.Compare with the SPS mode, the dynamic dispatching mode can't well guarantee the scheduling quality of uplink service.
(3) increased the uncertainty of uplink traffic transmission: if the up SPS un-activation of UE and do not send data service at up SPS cycle time slot; And the up SPS state of the current UE that eNB safeguards has activated and on the appointment running time-frequency resource of this time slot, detect data, and eNB can not detect any valid data.According to the processing of agreement, eNB can initiate the re-transmission flow process of uplink service.Because UE does not send any data at uplink semi-persistent scheduling on the cycle, so the upstream data that UE does not have an indication yet can retransmit, and therefore can cause the base station on the time slot of re-transmission, also can't detect any effective uplink service.ENB not only possibly distribute the control channel resource for activating up SPS once more, and because eNB can't in time know the up SPS of UE to be activated failure and prolonged the time that up SPS successfully activates, has increased the uncertainty of UE uplink traffic transmission.
Three problems more than mentioning all come from when activating up SPS, and eNB can't in time obtain the reception condition of UE to the DCI0 that activates up SPS.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of definite method of SPS activation, and its handling process is as shown in Figure 4, comprising:
Step S402, base station eNB are sent the DCI0 that activates up SPS, on the uplink time of DCI0 indication, detect the HARQ information of UE feedback;
Step S404, if eNB do not detect HARQ information, resend DCI0 and activate up SPS;
Step S406, if eNB detects HARQ information, and the number of times of the DCI0 that sends of eNB is less than preset times, then eNB confirms that up SPS is activated.
In embodiments of the present invention, eNB sends the DCI0 that activates up SPS, on the uplink time of DCI0 indication, detects the HARQ information of UE feedback; If eNB does not detect HARQ information, resend DCI0 and activate up SPS; If the number of times of the DCI0 that eNB sent when detecting to HARQ information is less than preset times, then eNB confirms that up SPS is activated.Promptly; In embodiments of the present invention; ENB can confirm whether up SPS is activated in the limited time (having confirmed to send the preset times of DCI0); Reliability and promptness that up SPS activates have been strengthened; The uplink time waste of avoiding bringing like the up SPS activation process of being mentioned in the correlation technique, the scheduling quality of uplink service can't be guaranteed and probabilistic problem of uplink traffic transmission, have shortened UE and eNB and when up SPS activates failure, have carried out the processing time that reactivation or judgement confirm to abandon up SPS.
During enforcement, eNB sends before the Downlink Control Information DCI0 that activates up SPS, comprising:
When UE had the uplink service needs that satisfy the SPS traffic performance to send, UE used the PUSCH channel to send BSR to eNB;
ENB receives the BSR that UE sends, and eNB confirms to distribute up SPS resource to UE, and this moment, eNB can not be an activated state with the up SPS status modifier of UE, that is, keeping the up SPS state of UE is deactivated state.
During enforcement, flow process as shown in Figure 4, eNB detects the HARQ information of UE feedback on the uplink time of DCI0 indication, comprise one of following:
First kind of situation: eNB do not detect HARQ information in the uplink time of DCI0 indication, can not activate up SPS, determines whether to continue to activate up SPS;
Second kind of situation: when DCI0 and DSCH Downlink Shared Channel data when same descending sub frame sends; ENB receives non-definite nack message on the uplink time of DCI0 indication; Confirm that the DSCH Downlink Shared Channel data are not successfully received by UE; DCI0 is successfully received by UE, and the up SPS state that UE is set is an activated state, and carries out the re-transmission of DSCH Downlink Shared Channel data according to the nack message that receives;
The third situation: when DCI0 and DSCH Downlink Shared Channel data not when same descending sub frame sends, eNB receives on the uplink time of DCI0 indication and confirms ACK information, confirms that DCI0 is successfully received by UE, the up SPS state that UE is set is an activated state;
The 4th kind of situation: when DCI0 and DSCH Downlink Shared Channel data when same descending sub frame sends; ENB receives ACK information on the uplink time of DCI0 indication; Confirm that the DSCH Downlink Shared Channel data are successfully received by UE; DCI0 is successfully received by UE, and the up SPS state that UE is set is an activated state.
During enforcement; If eNB confirms that up SPS is not activated; Then eNB can be at physical layer ascending control channel (PUCCH; Physical uplink control channel) detect the HARQ information of UE feedback on the resource, and determine whether to continue to activate up SPS, its processing procedure comprises following two kinds of situation at least:
First kind of situation: when DCI0 and DSCH Downlink Shared Channel data when same descending sub frame sends; ENB detects the ACK information of UE feedback on physical layer ascending control channel PUCCH resource; Confirm that the DSCH Downlink Shared Channel data are successfully received by UE, and determine whether to continue to activate up SPS;
Second kind of situation: when DCI0 and DSCH Downlink Shared Channel data when same descending sub frame sends; ENB detects the nack message of UE feedback on the PUCCH resource; Confirm that the DSCH Downlink Shared Channel data are not successfully received by UE, and determine whether to continue to activate up SPS.
Certainly, if when the number of times that eNB sends said DCI0 is not less than preset times (comprise more than or equal to situation), then eNB confirms to abandon the activation of up SPS.
During enforcement, preferred, preset times can be confirmed as follows: eNB is that down physical channel parameter and the detected down physical channel parameter of eNB that UE reports to eNB assigns weight; ENB obtains the parameter value of each down physical channel parameter, and the sum of products of the weight that the calculating parameter value is corresponding with it is set to N.
Wherein, down physical channel parameter above-mentioned can comprise multiple parameter, for example, channel quality indication (CQI, Channel Quality Indication), descending Block Error Rate (BLER, Block Error Ratio), or the like.
Based on same inventive concept, definite method that the embodiment of the invention also provides other a kind of uplink semi-persistent scheduling SPS to activate, its handling process is as shown in Figure 5, comprising:
Step S502, UE detect the DCI0 of the up SPS of activation that whether receives the base station eNB transmission;
Step S504, when the test results is yes, UE confirms that up SPS is activated;
Step S506, when testing result for not the time, UE confirms that up SPS is not activated.
Flow process as shown in Figure 5, step S504 is when implementing, and when the test results is yes, UE confirms that up SPS is activated, and can comprise following multiple situation:
First kind of situation: when DCI0 and DSCH Downlink Shared Channel data not when same descending sub frame sends, UE uses the uplink time of DCI0 indication to respond to eNB to confirm ACK information, and the up SPS state that self is set is an activated state;
Second kind of situation: when DCI0 and DSCH Downlink Shared Channel data are sent and DSCH Downlink Shared Channel data when successfully being resolved at same descending sub frame; UE uses the uplink time of DCI0 indication to respond ACK information to eNB, and the up SPS state that self is set is an activated state;
The third situation: when DCI0 and DSCH Downlink Shared Channel data are sent and DSCH Downlink Shared Channel data when successfully not resolved at same descending sub frame; UE uses the uplink time of DCI0 indication to respond non-definite nack message to eNB, and the up SPS state that self is set is an activated state.
Flow process as shown in Figure 5, step S506 when implementing, when testing result for not the time, UE confirms that up SPS is not activated, and also can comprise following multiple situation:
First kind of situation: when DCI0 and DSCH Downlink Shared Channel data not when same descending sub frame sends, UE does not receive DCI0, UE does not carry out any operation;
Second kind of situation: when DCI0 and DSCH Downlink Shared Channel data are sent and DSCH Downlink Shared Channel data when successfully being resolved at same descending sub frame; UE uses physical layer ascending control channel PUCCH resource to respond ACK information to eNB, and to keep the up SPS state of self be deactivated state;
The third situation: send and DSCH Downlink Shared Channel data when successfully not resolved at same descending sub frame when DCI0 and DSCH Downlink Shared Channel data, UE uses the PUCCH resource to respond nack message to eNB, and to keep the up SPS state of self be deactivated state.
Fig. 4 and Fig. 5 have described definite method that up SPS activates from different angles respectively, two angles are combined, and carry out the description of definite method of up SPS activation as angle, may further comprise the steps at present:
Step a, when UE has the uplink service needs that satisfy the SPS traffic performance to send, UE sends corresponding BSR to eNB;
After step b, eNB receive BSR, confirm and to distribute up SPS resource to UE through decision plan;
Step c, eNB send the DCI0 that activates up SPS to UE, and this moment, the base station can not be " activated state " with the up SPS status modifier of current UE;
Steps d, UE successfully detect the DCI0 that activates up SPS:
1) there are not the DSCH Downlink Shared Channel data (promptly if send the descending sub frame of the DCI0 that activates up SPS; When DCI0 and DSCH Downlink Shared Channel data not when same descending sub frame sends); UE use to activate the uplink time of the DCI0 indication of up SPS, responds the up SPS state of confirming (ACK) information and self being set to eNB and is " activated state ";
2) if current descending sub frame has the DSCH Downlink Shared Channel data (promptly; When DCI0 and DSCH Downlink Shared Channel data when same descending sub frame sends); And the DSCH Downlink Shared Channel data are successfully resolved; UE use to activate the running time-frequency resource of the DCI0 indication of up SPS and responds ACK information to the base station, and the up SPS state that self is set is " activated state ";
3) if current descending sub frame has the DSCH Downlink Shared Channel data; And the DSCH Downlink Shared Channel data are not successfully resolved; UE use to activate the uplink time of carrying among the DCI0 of up SPS and responds non-affirmation (NACK) information to eNB, and the up SPS state that self is set is " activated state ";
If step e UE does not successfully detect the DCI0 that activates up SPS:
1) do not have the DSCH Downlink Shared Channel data if send the descending sub frame of the DCI0 that activates up SPS, current descending sub frame UE does not receive any DCI, and UE does not do any operation;
2) if current descending sub frame has the DSCH Downlink Shared Channel data; And the DSCH Downlink Shared Channel data are successfully resolved; UE uses physical layer ascending control channel (PUCCH; Physical uplink control channel) resource is responded ACK information to eNB, and keeps the up SPS state of self to be " deactivated state ";
3) if current descending sub frame has the DSCH Downlink Shared Channel data, and the DSCH Downlink Shared Channel data are successfully resolved, and UE uses the PUCCH resource to respond nack message to eNB, and keeps the up SPS state of self to be " deactivated state ";
Step f, eNB receive the HARQ information of UE feedback according to the subframe sequential relationship of wireless system at the sub-frame of uplink of DCI0 indication:
1) eNB does not detect the descending HARQ information (corresponding e) (1) of current UE feedback in the uplink time of the DCI0 indication that activates up SPS), eNB can not activate up SPS state, and determines whether to continue to activate up SPS through tactful judge module;
2) eNB detects ACK (corresponding e) (2) on the PUCCH of correspondence resource), eNB can judge the DSCH Downlink Shared Channel data through tactful judge module and successfully received by UE; If eNB receives NACK (corresponding e) (3) on the PUCCH of correspondence resource), eNB can judge the DSCH Downlink Shared Channel business through tactful judge module and successfully do not received by UE.ENB can not activate up SPS state, and the usage policy judge module determines whether to continue to activate up SPS;
3) eNB receives NACK (corresponding d) (3) on the running time-frequency resource of the DCI0 indication that activates up SPS); ENB can judge the DSCH Downlink Shared Channel data through tactful judge module and successfully do not received by UE; The DCI0 that activates up SPS is successfully received by UE; Then eNB up SPS state that current UE can be set is " activated state ", and carries out the re-transmission of DSCH Downlink Shared Channel data according to the NACK that receives;
4) eNB receives ACK (corresponding d) (1) and d) (2) on the running time-frequency resource of the DCI0 indication that activates up SPS); ENB can judge the DSCH Downlink Shared Channel data through tactful judge module and successfully received by UE; The DCI0 that activates up SPS is successfully received by UE, and then eNB up SPS state that current UE can be set is " activated state ".
The embodiment of the invention can solve the uncertainty because of wireless channel, three problems such as uplink time waste of in background technology, mentioning that the DCI0 of the up SPS of activation that eNB sends is caused when successfully not received by UE.According to the method that the embodiment of the invention proposes, eNB can in time obtain the result that up SPS activates, thereby solves above-mentioned three problems.
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.
Embodiment one
In conjunction with Fig. 6, the step of the embodiment of the invention is following:
Step S602, UE detect the uplink service needs that satisfy up SPS characteristic and send, and trigger the flow process that UE initiates to set up BSR;
Step S604, UE are through sending BSR to eNB, and notice eNB current UE is up to have the data needs that satisfy the SPS characteristic to send.Here UE through send scheduling application (SR, Schedule Requese) to the steps such as scheduling resource of eNB application Uplink Shared Channel (PUSCH, Physical Uplink Share Channel) not within the scope that the present invention relates to, therefore omit;
Step S606, base station judgement can activate up SPS to current UE;
PDCCH information is sent to UE in step S608, base station, wherein carries the DCI0 that activates up SPS;
Step S610, UE successfully receive PDCCH and parse the DCI0 that activates up SPS;
It is professional that step S612, UE use the uplink time of carrying among the DCI0 that activates up SPS to send SPS to eNB for the first time, the ACK confirmation of carrying descending HARQ simultaneously;
Step S614, UE indicate according to eNB, activate up SPS;
After step S616, eNB receive the ACK information of UE feedback, after the processing through tactful judge module, activate the up SPS of current UE;
Step S618, UE periodically send uplink service according to the configuration of up SPS on the uplink scheduling resource of appointment;
Step S620, eNB send PDCCH to UE, wherein comprise the DCI0 that discharges up SPS;
Step S622, eNB discharge the up SPS of current UE;
Step S624, UE discharge up SPS after successfully receiving the DCI0 that discharges up SPS.
Embodiment two
Fig. 7 has explained and has worked as because the uncertainty of wireless channel waits certain reason, the scene that causes eNB to lose or successfully do not received by UE to the DCI0 of the up SPS of activation of UE transmission:
Step S702, UE detect the uplink service needs that satisfy up SPS characteristic and send, and trigger the flow process that UE initiates to set up BSR;
Step S704, UE are through sending BSR to eNB, and notice eNB current UE is up to have the data needs that satisfy the SPS characteristic to send; Here UE through send SR to the steps such as scheduling resource of eNB application PUSCH not within the scope that the present invention relates to, therefore omit;
Step S706, base station judgement can activate up SPS to current UE;
Physical layer PDCCH information is sent to UE in step S708, base station, wherein carries the DCI0 that activates up SPS.But because the uncertainty of wireless channel waits certain reason, the DCI0 of the up SPS of line activating is not successfully received by UE in the activation;
Step S710, eNB etc. are less than the descending HARQ information that on the uplink time of the DCI0 indication that activates up SPS, receives the UE feedback; The tactful judge module of eNB judges that the up SPS of current UE activates number of times and do not surpass threshold value, continues to activate the up SPS of current UE;
Step S712, eNB send physical layer PDCCH information to UE once more, wherein carry the DCI0 that activates up SPS;
Step S714, UE successfully receive the DCI0 that activates up SPS;
It is professional that step S716, UE use the uplink time of carrying among the DCI0 that activates up SPS to send SPS to eNB for the first time, the ACK confirmation of carrying descending HARQ simultaneously;
Step S718, UE indicate according to eNB, activate up SPS;
After step S720, eNB receive the ACK information of UE feedback, after the processing through tactful judge module, activate the up SPS of current UE.
Embodiment three
Fig. 8 has explained that eNB sends DCI0 and the professional scene of PDSCH that activates up SPS simultaneously to UE:
Step S802, UE detect the uplink service needs that satisfy up SPS characteristic and send, and trigger the flow process that UE initiates to set up BSR;
Step S804, UE are through sending BSR to eNB, and notice eNB current UE is up to have the data needs that satisfy the SPS characteristic to send.Here UE through send SR to the steps such as scheduling resource of eNB application PUSCH not within the scope that the present invention relates to, therefore omit;
Step S806, base station judgement can activate up SPS to current UE;
Physical layer PDCCH information is sent to UE in step S808, base station, wherein carries the DCI0 of the up SPS of activation and the DCI of indicating downlink PDSCH channel data;
Step S810, UE successfully resolve the PDSCH data and activate the DCI0 of up SPS;
It is professional that step S812, UE use the uplink time of carrying among the DCI0 that activates up SPS to send SPS to eNB for the first time, the ACK confirmation of carrying descending HARQ simultaneously;
Step S814, UE indicate according to eNB, activate up SPS;
After step S816, eNB receive the ACK information of UE feedback, after the processing through tactful judge module, activate the up SPS of current UE.
Mention above, eNB calculates preset times, and is preferred, and a tactful judge module can be set in eNB, the major function of tactful judge module include but not limited to following some:
Report to down physical channel parameter and the detected down channel parameter of eNB of eNB according to UE, include but not limited to parameters such as CQI, BLER, calculate the threshold value that up SPS activates number of times in real time.
ActThreshold
max＝P
1×w
1+P
2×w
2+...+P
n×w
n
ActThreshold
MaxRepresent that up SPS activates the maximum threshold of number of times, i.e. preset times N;
P
1, P
2... P
n, the relevant parameter that up SPS activates number of times is calculated in the expression influence, includes but not limited to that UE reports to down physical channel parameter and the detected down channel parameter of eNB of eNB;
w
1, w
2... w
nBe the corresponding P of difference
1, P
2... P
nThe weighted value of each parameter.
The up SPS that safeguards current UE activates the frequency of failure, is surpassing ActThreshold if activate the frequency of failure
MaxBefore the number of times, activate the up SPS of successful current UE, the up SPS of the current UE that has then added up activates the number of times zero clearing.
After eNB had sent the DCI0 that activates up SPS, according to physical layer detected descending HARQ information on the uplink time of SPS, whether decision-making activated the up SPS of current UE.
If the up SPS of current UE activates the frequency of failure more than or equal to ActThreshold
Max, then decision-making abandons activating the up SPS of current UE.
The flow process that adopts this module to handle is as shown in Figure 9, comprising:
Step S902, sent after the DCI0 that activates up SPS, eNB detects HARQ information on up particular time-slot resource;
Step S904, UE detect the descending HARQ information that UE responds on the running time-frequency resource of the DCI0 indication that activates up SPS, if, execution in step S906, if not, execution in step S908;
Step S906, judgement UE have received the DCI0 that activates up SPS, activate the up SPS of current UE;
Step S908, up SPS activate the frequency of failure and add 1:ActULSPSNum+1;
Step S910, judge that whether up SPS activates the frequency of failure more than or equal to activating threshold value; Be ActULSPSNum＞=ActThreshold; ActThreshold is that the up SPS that calculates activates the tolerable threshold value of failure according to parameter such as CQI, BLER and weight separately thereof, if; Execution in step S912, execution in step S914 if not;
Step S912, abandon activating the up SPS of current UE;
Step S914, continuation activate the up SPS of current UE.
The content that frame of broken lines is surrounded among the figure is the judgment processing process of tactful judge module.The strategy judge module reports to down physical channel parameter and the detected down channel parameter of eNB of eNB according to UE; Include but not limited to parameters such as CQI, BLER; Distribute certain weight for each parameter, the weight shared, definite transmission number of times threshold value that activates the DCI0 of up SPS according to each parameter; When eNB equals this threshold value to the number of times that UE sends the DCI0 that activates up SPS; When eNB did not also receive the ACK message of the up SPS of activation that UE replys, eNB abandoned activating the up SPS business of UE, has avoided activating repeatedly the wasting of resources and the inefficiency of bringing.Such as when CQI value very high, equal or near 15, BLER is very low, equals or near under 0 the situation, shows that the down physical channel condition is fine, activates a little bit smaller that the transmission number of times thresholding of the DCI0 of up SPS can be provided with at this moment, vice versa.
Based on same inventive concept, the embodiment of the invention also provides a kind of base station eNB, and its structural representation is shown in figure 10, comprising:
Detection module is connected with the retransmit module and first determination module respectively.
Based on same inventive concept, the embodiment of the invention also provides a kind of user equipment (UE), and its structural representation is shown in figure 11, comprising:
The 3rd determination module 1103, be used for when testing result for not the time, confirm that up SPS is not activated.
Second detection module is connected with second determination module, the 3rd determination module respectively.
Based on same inventive concept, the embodiment of the invention also provides a kind of uplink semi-persistent scheduling SPS to activate fixed system really, and its structural representation is shown in figure 12, comprises the base station eNB 1201 and user equipment (UE) 1202 that are connected:
UE 1202, are used to detect the Downlink Control Information DCI0 of the up SPS of activation that whether receives eNB 1201 transmissions; When the test results is yes, confirm that up SPS is activated; When testing result for not the time, confirm that up SPS is not activated.
Through technical scheme and the system that the embodiment of the invention provides, can summarize the embodiment of the invention and realize as drawing a conclusion:
Through adding the feedback mechanism of the DCI0 that activates up SPS, reliability and promptness that up SPS activates have been strengthened, three problems such as uplink time waste of having avoided present up SPS activation process noted earlier to bring; Shortened UE and eNB, when up SPS activates failure, carried out reactivation or judge the processing time of confirming to abandon up SPS;
Through activating under the scene of up SPS, fixed and increase tactful judge module and, can realize the technical scheme of embodiment of the invention description with the eNB covenant of works to the description of tactful judge module flow process in the eNB side to UE;
The present technique scheme is on the framework of prior protocols and basis, to realize up SPS is activated the solution of uncertain problem, does not violate the agreement and the spirit of existing protocol.
From above description, can find out that the present invention has realized following technique effect:
In embodiments of the present invention, eNB sends the DCI0 that activates up SPS, on the uplink time of DCI0 indication, detects the HARQ information of UE feedback; If eNB does not detect HARQ information, resend DCI0 and activate up SPS; If the number of times of the DCI0 that eNB sent when detecting HARQ information is less than preset times, then eNB confirms that up SPS is activated.Promptly; In embodiments of the present invention; ENB can confirm whether up SPS is activated in the limited time (having confirmed to send the preset times of DCI0); Reliability and promptness that up SPS activates have been strengthened; Avoid the uplink time waste that brings like the up SPS activation process of being mentioned in the correlation technique, the scheduling quality of uplink service can't be guaranteed and increase probabilistic problem of uplink traffic transmission, shortened UE and eNB and when up SPS activates failure, carried out reactivation or judge the processing time of confirming to abandon up SPS.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. the definite method that uplink semi-persistent scheduling SPS activates is characterized in that, comprising:
Base station eNB is sent the Downlink Control Information DCI0 that activates up SPS, on the uplink time of said DCI0 indication, detects the automatic repeat requests HARQ information of mixing of user equipment (UE) feedback;
If said eNB does not detect said HARQ information, resend said DCI0 and activate said up SPS;
If said eNB detects said HARQ information, and the number of times of the said DCI0 that sends of said eNB is less than preset times, and then said eNB confirms that said up SPS is activated.
2. method according to claim 1 is characterized in that, said eNB sends before the Downlink Control Information DCI0 that activates up SPS, comprising:
When said UE had the uplink service needs that satisfy the SPS traffic performance to send, said eNB received the up Buffer Status Report BSR that said UE sends;
Said eNB confirms to distribute up SPS resource to said UE, and it is deactivated state that said eNB keeps the up SPS state of said UE.
3. method according to claim 1 is characterized in that, said eNB detects the HARQ information of UE feedback on the uplink time of said DCI0 indication, comprises one of following:
Said eNB does not detect said HARQ information in the uplink time of said DCI0 indication, can not activate said up SPS, determines whether to continue to activate said up SPS;
When said DCI0 and DSCH Downlink Shared Channel data when same descending sub frame sends; Said eNB receives non-definite nack message on the uplink time of said DCI0 indication; Confirm that said DSCH Downlink Shared Channel data are not successfully received by said UE; Said DCI0 is successfully received by said UE, and the up SPS state that said UE is set is an activated state, and carries out the re-transmission of DSCH Downlink Shared Channel data according to the nack message that receives;
When said DCI0 and DSCH Downlink Shared Channel data not when same descending sub frame sends; Said eNB receives on the uplink time of said DCI0 indication and confirms ACK information; Confirm that said DCI0 is successfully received by said UE, the up SPS state that said UE is set is an activated state;
When said DCI0 and DSCH Downlink Shared Channel data when same descending sub frame sends; Said eNB receives ACK information on the uplink time of said DCI0 indication; Confirm that said DSCH Downlink Shared Channel data are successfully received by said UE; Said DCI0 is successfully received by said UE, and the up SPS state that said UE is set is an activated state.
4. method according to claim 1; It is characterized in that; If said eNB confirms that said up SPS is not activated, then said eNB detects the HARQ information of UE feedback on physical layer ascending control channel PUCCH resource, and determines whether to continue to activate said up SPS.
5. method according to claim 4 is characterized in that, said eNB detects the HARQ information of UE feedback on physical layer ascending control channel PUCCH resource, comprising:
When said DCI0 and DSCH Downlink Shared Channel data when same descending sub frame sends, said eNB detects the ACK information of UE feedback on physical layer ascending control channel PUCCH resource, confirm that said DSCH Downlink Shared Channel data are successfully received by UE;
When said DCI0 and DSCH Downlink Shared Channel data when same descending sub frame sends, said eNB detects the nack message of UE feedback on said PUCCH resource, confirm that said DSCH Downlink Shared Channel data are not successfully received by UE.
6. according to each described method of claim 1 to 5, it is characterized in that when the number of times that said eNB sends said DCI0 was not less than preset times, then said eNB confirmed to abandon the activation of said up SPS.
7. method according to claim 6 is characterized in that, said preset times is confirmed as follows:
Said eNB is that down physical channel parameter and the detected down physical channel parameter of said eNB that said UE reports to said eNB assigns weight;
Said eNB obtains the parameter value of said each down physical channel parameter, calculates the sum of products of the said parameter value weight corresponding with it, is set to said preset times.
8. method according to claim 7 is characterized in that, said down physical channel parameter comprises: channel quality indicator (CQI) and descending block error rate BLER.
9. the definite method that uplink semi-persistent scheduling SPS activates is characterized in that, comprising:
User equipment (UE) detects the Downlink Control Information DCI0 of the up SPS of activation that whether receives the base station eNB transmission;
When the test results is yes, said UE confirms that said up SPS is activated;
When said testing result for not the time, said UE confirms that said up SPS is not activated.
10. method according to claim 9 is characterized in that, when the test results is yes, said UE confirms that said up SPS is activated, and comprises one of following:
When said DCI0 and DSCH Downlink Shared Channel data not when same descending sub frame sends, said UE uses the uplink time of said DCI0 indication to respond to said eNB to confirm ACK information, and the up SPS state that self is set is an activated state;
When said DCI0 and DSCH Downlink Shared Channel data are sent and said DSCH Downlink Shared Channel data when successfully being resolved at same descending sub frame; Said UE uses the uplink time of said DCI0 indication to respond ACK information to said eNB, and the up SPS state that self is set is an activated state;
When said DCI0 and DSCH Downlink Shared Channel data are sent and said DSCH Downlink Shared Channel data when successfully not resolved at same descending sub frame; Said UE uses the uplink time of said DCI0 indication to respond non-definite nack message to said eNB, and the up SPS state that self is set is an activated state.
11. according to claim 9 or 10 described methods, it is characterized in that, when said testing result for not the time, said UE confirms that said up SPS is not activated, and comprises one of following:
When said DCI0 and DSCH Downlink Shared Channel data not when same descending sub frame sends, said UE does not receive said DCI0, said UE undo;
When said DCI0 and DSCH Downlink Shared Channel data are sent and said DSCH Downlink Shared Channel data when successfully being resolved at same descending sub frame; Said UE uses physical layer ascending control channel PUCCH resource to respond ACK information to said eNB, and to keep the up SPS state of self be deactivated state;
When said DCI0 and DSCH Downlink Shared Channel data are sent and said DSCH Downlink Shared Channel data when successfully not resolved at same descending sub frame; Said UE uses said PUCCH resource to respond nack message to said eNB, and to keep the up SPS state of self be deactivated state.
12. a base station eNB is characterized in that, comprising:
First detection module is used to send the Downlink Control Information DCI0 that activates up SPS, on the uplink time of said DCI0 indication, detects the automatic repeat requests HARQ information of mixing of user equipment (UE) feedback;
Retransmit module is used for resending said DCI0 and activating said up SPS if said detection module does not detect said HARQ information;
First determination module is used for if said detection module detects said HARQ information, and the number of times of the said DCI0 that sends confirms then that less than preset times said up SPS is activated.
13. a user equipment (UE) is characterized in that, comprising:
Second detection module is used to detect the Downlink Control Information DCI0 that whether receives the up SPS of activation that base station eNB sends;
Second determination module is used for when the test results is yes, confirms that said up SPS is activated;
The 3rd determination module, be used for when said testing result for not the time, confirm that said up SPS is not activated.
14. a uplink semi-persistent scheduling SPS activates fixed system really, it is characterized in that, comprises base station eNB and user equipment (UE):
Said eNB is used to send the Downlink Control Information DCI0 that activates up SPS, on the uplink time of said DCI0 indication, detects the automatic repeat requests HARQ information of mixing of said UE feedback; If do not detect said HARQ information, resend said DCI0 and activate said up SPS; If detect said HARQ information, and the number of times of the said DCI0 that sends confirms then that less than preset times said up SPS is activated;
Said UE is used to detect the Downlink Control Information DCI0 that whether receives the up SPS of activation that said eNB sends; When the test results is yes, confirm that said up SPS is activated; When said testing result for not the time, confirm that said up SPS is not activated.
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| PCT/CN2011/080131 WO2012155436A1 (en) | 2011-05-13 | 2011-09-23 | Method, device and system for confirming activation of uplink semi-persistent scheduling (sps) |
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| US11889296B2 (en) | 2018-02-12 | 2024-01-30 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting uplink information |
| CN110166215A (en) * | 2018-02-13 | 2019-08-23 | 北京三星通信技术研究有限公司 | The method and apparatus that portions of bandwidth state of activation determines |
| WO2019191882A1 (en) * | 2018-04-02 | 2019-10-10 | Oppo广东移动通信有限公司 | Resource indication method and apparatus and computer storage medium |
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| CN114339825A (en) * | 2021-11-26 | 2022-04-12 | 锐捷网络股份有限公司 | Semi-static scheduling method and device |
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