CN101369874B - Multi-user feedback method, system, base station and customer equipment - Google Patents
Multi-user feedback method, system, base station and customer equipment Download PDFInfo
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Abstract
The invention discloses a multiuser feedback method comprising: conducting a downlink transmission which needs a UE feedback to multicast services when the UE number is lower than a presupposition threshold of the same multicast services, sending down a position indication information needed by the feedback through a high layer signaling. The UE confirms a channel resource for the unlink feedback according to the position indication information and conducts an uplink feedback to a downlink data package of the received multicast services on the confirmed feedback channel. Moreover the invention also discloses a multiuser feedback system, a base station and a UE. The technique scheme of the invention can realize the multiuser feedback in the multicast services.
Description
Technical field
The present invention relates to mobile communication technology, relate in particular to a kind of in multicast service method, system, base station and the subscriber equipment (UE) of multi-user feedback.
Background technology
In order to effectively utilize mobile network resource, broadcasting and multicast service (MBMS) have been proposed, namely realize point-to-multipoint multicast service, multicast service refers to transmit to a plurality of targets from a data source mode of datagram, compare with clean culture (Unicast) trafficwise of former point-to-point, can conserve bandwidth, realize that Internet resources share.
For unicast service, each UE can carry out uplink feedback according to the situation of reception downlink transfer.The content of uplink feedback comprise receive correctness reply (ACK/NACK) signal and channel quality indication (CQI, Channel Quality Indicator), the base station can be according to the situation of uplink feedback, determine whether retransmission data packet may and whether adjust modulating-coding form etc., in order to improve systematic function.Wherein, the resource that takies of up CQI by the base station by the descending control signaling display notification; And the ACK/NACK channel that uplink ACK/NACK signal uses can take two resource pools, and the ACK/NACK channel in each resource pool is numbered respectively according to a definite sequence, is called channel number.This channel number is to distinguish different ACK/NACK channels, can not show as channel designator in the practical application, for example can be the three-dimensional coordinate figures of time, frequency, code.
In the first resource pond, the channel position that ack/nack signal corresponding to downlink data packet takies is corresponding with the shared channel position implicit expression of descending control signaling of this packet of scheduling.
For example: take the situation corresponding with the shared channel number implicit expression of descending control signaling as example, the control signal of supposing certain downlink data packet takies M descending shared control signal channel, then the uplink ACK of this downlink data packet/NACK signal feedback is just taken N ACK/NACK channel, wherein, M and N have a definite relation, the most simply are M=N.Therefore, UE is by reading descending control message to know the resource location of feeding back ACK/NACK signal.Take the situation of 4 UE as example, Fig. 1 (a) shows the structural representation of the descending shared control signal channel of unicast service.Shown in Fig. 1 (a), the descending control signaling of 4 UE takies respectively 4 control channels, be that control channel 1 is to control channel 4, UE utilizes the UE ID of self go to decode descending control signaling in the control channel based on blind Detecting, when UE can be correctly decoded, the control signal that namely represents this control channel sends to this UE, shown in Fig. 1 (a), UE1, UE2, UE3 and UE4 all can utilize the UE ID decoding of self to obtain sending to the control signal of self, because the control channel at this control signal place number can implicit expression indication UE uses which the ACK/NACK channel transmission ack/nack signal in the first resource pond, therefore, UE can according to the control channel at decoding control signal place number, know that ack/nack signal takies the situation of ACK/NACK channel.When adopting the mode of aforementioned M=N, UE takies the situation of ACK/NACK channel shown in Fig. 1 (b), Fig. 1 (b) shows the structural representation of the uplink feedback channel of 4 UE in the unicast service, among Fig. 1 (b), each UE takies respectively the ACK/NACK channel with control channel same channel number, be ACK/NACK channel 1 to ACK/NACK channel 4, carry out the ack/nack signal feedback.
In the Secondary resource pond, the channel position that the ACK/NACK information that packet is corresponding takies is by the signaling explicit notification, and the descending control signaling of this moment can take descending shared control signal channel, also can be used as high-rise control signal and uses other resource transmission.
In multicast service, when the quantity of the subscriber equipment (UE) that receives certain multicast service during less than some, for example less than 8～10 o'clock, UE carries out uplink feedback, system determines whether retransmission data packet may and adjusts the modulating-coding form based on feedback, can improve systematic function; And when the quantity of the UE that receives a multicast service surpassed some, then the uplink feedback of UE had not had reference value to system, and UE can no longer feed back.
In the prior art, because for multicast service, corresponding packet, may have a plurality of UE feeds back, and each UE is not owing to knowing totally to have several UE simultaneously at receiving multicast traffic, and do not know this carries out the ack/nack signal feedback at which channel, and the method that therefore there is no realizes the uplink feedback in multicast service yet.
Summary of the invention
In view of this, provide on the one hand a kind of method of multi-user feedback in the embodiment of the invention, a kind of system, base station and UE of multi-user feedback are provided on the other hand, in order to realize the feedback of the many UE in multicast service.
The method of the multi-user feedback that provides in the embodiment of the invention, comprise: when the quantity of the UE that receives same multicast service is lower than default thresholding, the downlink transfer that described multicast service is needed the UE feedback, and issue feedback desired position indication information to UE, be used for UE according to described position indication information, determine self to carry out the channel resource of uplink feedback, and the downlink data packet to the multicast service that receives is carried out uplink feedback on the feedback channel of determining;
The described downlink transfer that needs UE to feed back to multicast service is: the control signal to described multicast service adopts the mode of dynamic dispatching to transmit;
When only having the multicast service of a dynamic dispatching in the subframe, described control signal to multicast service adopts the mode of dynamic dispatching to be transmitted as: the control signal of this multicast service sends at descending shared control signal channel, and the descending shared control signal channel that takies of described control signal is arranged on after the shared descending shared control signal channel of the control signal of unicast service;
Described position indication information is: the feedback channel of each UE in the first resource pond with respect to the offset information of the original position of multicast service feedback channel;
Described UE is according to position indication information, determine that the channel resource that self carries out uplink feedback is: UE is according to channel position and the default implicit expression corresponding relation of the descending shared control signal channel of receiving multicast traffic control signal, determine the original position at multicast service feedback channel described in the first resource pond, according to the feedback channel of each UE in described definite original position and the described position indication information offset information with respect to the original position of multicast service feedback channel in the first resource pond, determine in the first resource pond, to carry out the channel resource of uplink feedback;
When in the subframe multicast service of a plurality of dynamic dispatchings being arranged, described control signal to multicast service adopts the mode of dynamic dispatching to be transmitted as: the control signal of each multicast service sends at descending shared control signal channel, and the descending shared control signal channel that the control signal of each multicast service takies is arranged on after the descending shared control signal channel that the control signal of unicast service takies, in the descending shared control signal channel that the control signal of multicast service takies, the information of the original position of uplink feedback channel corresponding to the corresponding multicast service of indication is set;
Described position indication information is: the feedback channel of each UE in the first resource pond with respect to the offset information of the original position of the multicast service feedback channel that receives;
Described UE is according to position indication information, determine that the channel resource that self carries out uplink feedback is: UE is according to the indication information in the descending shared control signal channel of receiving multicast traffic control signal, determine the original position of institute's receiving multicast traffic feedback channel in the first resource pond, according to the feedback channel of each UE in described definite original position and the described position indication information offset information with respect to the original position of institute's receiving multicast traffic feedback channel in the first resource pond, determine in the first resource pond, to carry out the channel resource of uplink feedback.
Can find out from such scheme, receive the quantity of the user equipment (UE) of same multicast service in the embodiment of the invention by statistics, and when the quantity of the UE that receives same multicast service is lower than default thresholding, the downlink transfer that this multicast service is needed the UE feedback, and issue feedback desired position indication information by high-level signaling to UE, thereby so that each UE can be according to this position indication information, be defined as the feedback channel resources that self distributes, and the downlink data packet to the multicast service that receives is carried out uplink feedback on the feedback channel of determining, has realized multi-user's feedback in the multicast service.
Description of drawings
Fig. 1 (a) is the structural representation of the descending shared control signal channel of unicast service in the prior art;
Fig. 1 (b) is the structural representation of the uplink feedback channel of unicast service in the prior art;
Fig. 2 is the exemplary process diagram of the method for multi-user feedback in the embodiment of the invention;
Fig. 3 (a) is for existing the structural representation of the descending shared control signal channel of multicast service in the embodiment of the invention;
Fig. 3 (b) is for existing the structural representation of the uplink feedback channel of multicast service in the embodiment of the invention;
Fig. 3 (c) is the structural representation of the uplink feedback channel of each UE in the multicast service in the embodiment of the invention;
Fig. 4 is the exemplary block diagram of the system of multi-user feedback in the embodiment of the invention;
Fig. 5 is the internal structure schematic diagram of base station in the system shown in Figure 4;
Fig. 6 is the internal structure schematic diagram of UE in the system shown in Figure 4.
Embodiment
In the embodiment of the invention, when the quantity of the UE that receives same multicast service is lower than default thresholding, this multicast service is needed the downlink transfer of UE feedback, and issue feedback desired position indication information by high-level signaling to UE; UE is according to this position indication information, is defined as the feedback channel resources that self distributes, and the downlink data packet to the multicast service that receives is carried out uplink feedback on the feedback channel of determining.
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in more detail.
Fig. 2 is the exemplary process diagram of the method for multi-user feedback in the embodiment of the invention.As shown in Figure 2, this flow process comprises the steps:
Because it is different needing the positional information of each UE of feedback, so network side can know have what UE to receive simultaneously certain multicast service, and knows the ID of these UE.During specific implementation, UE can initiate report flow to network side, informs the multicast service that network side self will receive or receive, so that network side is added up.
Wherein, UE can according to predetermined period, periodically report to network side; Perhaps, can preset report condition, when satisfying report condition, UE initiates report flow to network side.
In addition, network side also can be at high-level signaling, control channel (MCCH) such as MBMS, one of middle increase reports sign (such as Feedback_flag), whether need UE report its multicast service that will receive or receiving, namely network side issues to UE and reports indication information if being used to indicate network side, UE is according to the indication information that reports from network side, report the information of self receiving multicast traffic to network side, such as the information of the multicast service that will receive or receive.Wherein, network side can be according to predetermined period, periodically issue to UE and carry the high-level signaling that reports sign, also can be according to the statistics needs, issue targetedly and carry the high-level signaling that reports sign, because it is relevant with the number of UE whether UE needs to carry out uplink feedback, when therefore if network side finds that UE is more, network side need not UE and carries out uplink feedback, namely need not to issue position indication information to UE, therefore also need not to continue according to UE to offering the number of statistics UE on institute's receiving multicast traffic.
Wherein, when UE initiates report flow to network side, can use signaling to carry the mode of (Piggyback) secretly, in upstream message, carry the information of the multicast service that self will receive or receive, for example, carry the cause value of receiving multicast traffic etc., the multicast service that reports it to receive or to receive.Wherein, carry out upstream message that signaling carries secretly can have multiple, as comprising: wireless resource control connection request (RRC Connection Request), initial direct-sending (Initial Direct Transfer), up direct transferring (Uplink Direct Transfer), the Radio Resource control connection is set up and is finished (RRC ConnectionEstablishment Complete), measurement report (Measurement Report), switch and finish (HOComplete), cell update is finished (Cell Update Complete), the Universal Terrestrial Radio Access Network registration zone is upgraded and is finished (URA Update Complete), physics/transmission channel/radio bearer is reshuffled and is finished (Physical/Transport Channel/RB Reconfiguration Complete), statistics response (Counting Response), or newly-increased specific messages and other message etc.
The information that network side reports according to UE, statistics obtains receiving the number of the UE of same multicast service.
Wherein, default thresholding can arrange according to actual needs, as being set to 8,9,10 etc.
In the present embodiment, when the number of the UE that receives same multicast service is higher than default thresholding, need not UE and carry out uplink feedback (comprising ACK/NACK feedback and CQI feedback), therefore for not needing UE to carry out the multicast service of uplink feedback, its descending control signaling can use the method for persistent scheduling (Persistent Scheduling), and namely a dispatch can be dispatched repeatedly data packet transmission.
Wherein, the control signal of persistent scheduling can send at high-rise channel, as sending at MCCH, or sends on other channel etc.
Perhaps, the control signal of persistent scheduling also can send at descending shared control signal channel, and the signaling field of control signal can be consistent with the situation of clean culture, also can simplify to some extent, as omit multiple-input and multiple-output (MIMO) relevant information, modulating-coding form, antenna configuration etc.
Or the control signal of persistent scheduling can be divided into two parts, and a part of signaling is (such as many antenna configurations, modulating-coding form etc.) at high-rise channel, send as MCCH is upper, another part signaling (such as physical source distributing, data package size etc.) sends at descending shared control signal channel.
Further, the control signal of all multicast services that need not to feed back that send in same subframe can combined coding (information source coding), takies a descending shared control signal channel and sends.
In addition, for not needing UE to carry out the multicast service of uplink feedback, its descending control signaling also can use the method for dynamic dispatching (Dynamic Scheduling).At this moment, the control signal of dynamic dispatching can send at descending shared control signal channel usually, perhaps also can be used as high-level signaling and uses other resource to send.In order to reduce the detection number of times of UE, be the UE economize on electricity, within a modification cycle (Modifying Period), the moment of dynamic dispatching (i.e. position in subframe) can be indicated by MCCH.
In this step, for needing UE to carry out the uplink feedback multicast service of (comprising ACK/NACK feedback and CQI feedback), its descending control signaling can use the mode of dynamic dispatching (Dynamic Scheduling), and namely a dispatch is only dispatched data packet transmission one time.
Wherein, the descending control signaling of dynamic dispatching can send at descending shared control signal channel, also can be used as high-level signaling and uses other channel resource to send.In order to reduce the detection number of times of UE, be the UE economize on electricity, within a modification cycle (Modifying Period), the moment of dynamic dispatching (i.e. position in subframe) can by high-rise channel, indicate to UE such as MCCH.
The below enumerates several concrete conditions this step is described in detail:
Situation one: when only having the multicast service of a dynamic dispatching in the subframe, the control signal of this multicast service can use descending shared control signal channel, and the signaling field can be consistent with the situation of clean culture, also can simplify to some extent (as omitting the relevant field of MIMO).In order not affect the processing of unicast service, can the descending shared control signal channel that the control signal of this multicast service is shared be arranged on after the shared descending shared control signal channel of the control signal of unicast service.The situation that receives unicast services and 4 UE receiving multicast traffics take 4 UE is as example, and referring to Fig. 3 (a), Fig. 3 (a) shows the structural representation of descending shared control signal channel when having multicast service.Wherein, 4 descending control signalings of unicast service take respectively 4 control channels consistent with structure shown in Fig. 1 (a), be control channel 1 to control channel 4, and the descending control signaling of multicast service is positioned at the control channel after the clean culture control channel, namely control channel 5.At this moment, multicast service can use an ID code that is different from general UE ID, and for example system reserves an ID to the all-multicast business, is called MBMS ID, perhaps also can be that different multicast services distributes different ID.Shown in Fig. 3 (a), a plurality of each control channels of UE meeting blind Detecting of receiving multicast traffic, when control channel 5 was arrived in inspection, if MBMS ID coupling, then these UE read corresponding data division according to the indication of this control channel.
Because what this moment, multicast service used is the descending shared control signal channel identical with unicast service, then use the situation in first resource pond for uplink feedback, owing to the channel position implicit expression that ack/nack signal corresponding to the downlink data packet channel position that takies and the descending control signaling of dispatching this packet are shared is corresponding, therefore UE can be according to the channel position and the implicit expression corresponding relation that receive descending control signaling, determine to carry out for multicast service the initial position of uplink feedback, when adopting the mode of aforementioned M=N, UE takies the situation of ACK/NACK channel shown in Fig. 3 (b), Fig. 3 (b) shows the structural representation of uplink feedback channel when having multicast service, among Fig. 3 (b), the UE of each unicast service takies respectively the ACK/NACK channel with control channel same channel position, it is ACK/NACK channel 1 to ACK/NACK channel 4, carry out the ack/nack signal feedback, the original position that the UE of multicast service feeds back takies the ACK/NACK channel with control channel same channel position, and namely the ACK/NACK channel 5.
But because each UE does not know totally to have several UE receiving this multicast service simultaneously, therefore can't learn the channel particular location that feeds back, for this reason, network side can issue to each UE of this multicast service by high-level signaling and feed back required detail location indication information, and this position indication information can be the feedback channel of each UE offset information with respect to the original position of above-mentioned multicast service feedback channel in the first resource pond.Especially, can give receive this professional UE ordering, with the sequence number of UE as the position offset information.
Situation two: when a subframe had the multicast service of a plurality of dynamic dispatchings, different multicast services was distinguished with different ID, and in order not affect unicast service, the descending control signaling of these multicast services can all be positioned at after the control channel of unicast service.Equally, because what this moment, multicast service used is the descending shared control signal channel identical with unicast service, then use the situation in first resource pond for uplink feedback, because each UE does not know that several multicast services are totally arranged, and each multicast service has several UE receiving simultaneously, therefore the UE that only is positioned at unicast service first multicast service afterwards can be according to the channel position and the implicit expression corresponding relation that receive descending control signaling, determine to carry out for this multicast service the initial position of uplink feedback, but can't learn equally the channel particular location that feeds back, the UE of other multicast service after first multicast service then original position all can't learn with the channel particular location that feeds back.For this reason, network side can be in the descending shared control signal channel of the control signal that sends multicast service, increase field to indicate the original position of uplink feedback channel corresponding to this control channel multicast service in the first resource pond, for example, can be by the all-multicast business control channel of indicating this control channel front the number of the corresponding uplink feedback channel difference that deducts the control channel number of its front all-multicast business indirectly indicate, perhaps also can directly indicate the original position of uplink feedback channel corresponding to this control channel multicast service in the first resource pond.Equally, network side can issue to each UE of each multicast service by high-level signaling and feed back required detail location indication information, and this position indication information can be the feedback channel of each UE offset information with respect to the original position of the multicast service feedback channel that receives in the first resource pond.
Situation three: the control channel that the descending control signaling of multicast service takies also can have other distribution mode except after the control channel that can be arranged on unicast service.For example, multicast service is set between the control channel of unicast service at random, at this moment, can be in the descending shared control signal channel of unicast traffic, increase field to indicate the position of uplink feedback channel corresponding to this unicast service, and in the descending shared control signal channel of multicast service, increase field to indicate the original position of uplink feedback channel corresponding to this multicast service.Wherein, when carrying out the indication of position or original position, can indirectly indicate by the number of uplink feedback channel corresponding to this control channel business business control channel before equally.In addition, can issue to the UE of each multicast service by high-level signaling equally and feed back required detail location indication information, this position indication information can be the feedback channel of each UE offset information with respect to the original position of the multicast service feedback channel that receives in the first resource pond.
Situation four: multicast service also can come transmitting downlink control signal with the resource of high-level signaling except can using the descending shared control signal channel transmitting downlink control signal identical with unicast service.But no matter be to use the descending shared control signal channel transmitting downlink control signal identical with unicast service, or come transmitting downlink control signal with the resource of high-level signaling, use the situation in Secondary resource pond for uplink feedback, network side can issue to each UE by high-level signaling and feed back required detail location indication information, and this position indication information can be the concrete channel position of feedback channel in the Secondary resource pond of each UE.
Wherein, UE can preserve this position indication information, and UE also can return the affirmation information that has received to network side after receiving position indication information from network side.
The below for several situations cited in the step 204, is described in detail this step respectively.
For the situation one in the step 204, in this step, UE is according to channel position and the default implicit expression corresponding relation of the descending shared control signal channel of receiving multicast traffic control signal, determine that in the first resource pond this multicast service carries out the original position of the feedback channel of uplink feedback, according to from the feedback channel of each indicated UE of the position indication information of the high-level signaling offset information with respect to the original position of multicast service feedback channel in the first resource pond, determine that self carries out the channel position of uplink feedback in the first resource pond, be the uplink feedback channel resource of self distributing, and the downlink data packet to the multicast service that receives is carried out uplink feedback on the uplink feedback channel of respective channel position.Receive the situation of unicast service and 4 UE receiving multicast traffics as example take aforementioned 4 UE equally, Fig. 3 (c) shows the structural representation of the uplink feedback channel of each UE in the multicast service, UE in the multicast service determines respectively the uplink feedback channel of ACK/NACK channel 5 to the ACK/NACK channels 8 shown in Fig. 3 (c) according to position indication information, and feeds back in uplink feedback channel separately.
For the situation two in the step 204, in this step, receive the UE of first multicast service according to channel position and the default implicit expression corresponding relation of the descending shared control signal channel that receives control signal, determine that in the first resource pond this multicast service carries out the feedback channel original position of uplink feedback, perhaps, if be provided with indication field in the descending shared control signal channel, then UE can determine that in the first resource pond this multicast service carries out the feedback channel original position of uplink feedback according to the indication information in the indication field; Receive the UE of other multicast service according to the indication information in the indication field of the channel that receives descending control signaling, determine the original position of the uplink feedback channel that this multicast service is corresponding, uplink feedback channel the original position in first resource pond corresponding such as this multicast service of direct use indication field indicating, perhaps deduct control channel number poor of front all-multicast business according to the number of uplink feedback channel corresponding to the all-multicast business control channel of front indicated in the indication field, according to the position of this multicast service control channel, can obtain the original position of current multicast service corresponding uplink feedback channel in the first resource pond simultaneously.Afterwards, the offset information of the original position of the multicast service that the UE of each multicast service receives with respect to self in the first resource pond according to the feedback channel from each indicated UE phase of the position indication information of high-level signaling, determine from the channel position that carries out uplink feedback in the first resource pond, the downlink data packet to the multicast service that receives on the uplink feedback channel of respective channel position is carried out uplink feedback.
For the situation three in the step 204, in this step, the UE of unicast service obtains the uplink feedback channel that self receives professional correspondence from the indication field of the channel of reception descending control signaling position, the UE of multicast service obtains the original position of the uplink feedback channel that self receives professional correspondence from the indication field of the descending shared control signal channel of reception control signal, afterwards, the offset information of the original position of the multicast service that the UE of multicast service receives with respect to self in the first resource pond according to the feedback channel from each indicated UE of the position indication information of high-level signaling, determine from the channel position that carries out uplink feedback in the first resource pond, the downlink data packet to the multicast service that receives on the uplink feedback channel of respective channel position is carried out uplink feedback.
For the situation four in the step 204, in this step, each UE basis is from the indication of the position indication information of high-level signaling, directly determine in the Secondary resource pond, to carry out the concrete channel position of uplink feedback, and the downlink data packet to the multicast service that receives is carried out uplink feedback on the uplink feedback channel of respective channel position.
Further, when UE quantity increases gradually, from being lower than default thresholding when being higher than default thresholding, network side can think that the distribution of UE this moment is random, need not single UE and feeds back, and this moment, network side can be cancelled before the setting to the position indication information of some UE.Wherein, the method for canceling position indication information has two kinds at least: a kind of use dedicated signaling mode, another kind are to use broadcast mode.For example, can notify the UE off-position indication information with position indication information by dedicated signaling; Perhaps, indicate the position indication information of the UE that receives certain multicast service for removing (Disable) state that enables by Broadcast Control Channel (BCCH); Or, indicate the position indication information of the UE that receives certain multicast service for removing (Disable) state that enables by MCCH.
And reduce gradually when UE quantity, from being higher than default thresholding when being lower than default thresholding, network side can be restarted position indication information.Wherein, the method for enable position indication information also has two kinds at least: a kind of use dedicated signaling mode, another kind are to use broadcast mode.As, can use dedicated signaling is the UE setting position indication information of existing this multicast service of reception; Perhaps, use BCCH to indicate the position indication information of the UE that receives this multicast service for enabling (Enable) state; Or, indicate the position indication information of the UE that receives this multicast service for enabling (Enable) state by MCCH.
Wherein, when a multicast service needs to change the Dispatching Form Headway of signaling owing to the increase that receives number or minimizing, for example, increase when being higher than default thresholding in number, in order to economize on resources, the dynamic dispatching mode can be revised as the persistent scheduling mode, at this moment, in order not affect the reception of UE, can require the Dispatching Form Headway of signaling and corresponding data packet scheduling when the next one modification cycle begins, to remake change.Namely when the quantity of UE when being lower than default thresholding and becoming the default thresholding of master-hand, when the next one modification cycle begins, the downlink transfer that needs the UE feedback of multicast service is changed to the downlink transfer that need not the UE feedback; When the quantity of UE becomes when being lower than default thresholding by being higher than default thresholding, when the next one modification cycle begins, the downlink transfer that need not the UE feedback of multicast service is changed to the downlink transfer that needs the UE feedback.Wherein, the employed Dispatching Form Headway of multicast service can be at the MCCH indicating, but is not limited to the indicating at MCCH.
In addition, when one of following situation occured, the position indication information of UE need to be upgraded, and comprises release or the reconstruction of position indication information.
When situation one: UE discharges the multicast service that receives, the release of position indication information.
When UE no longer receives current multicast service, UE can further initiate up signaling network side and self leave, this moment, network side can be deleted the resource that all these UE use, and comprised that UE carries out the channel resource that uplink feedback uses, and namely discharges the position indication information of UE.
Situation two: when UE cell reselection or cell update arrive other residential quarter, the release of position indication information or reconstruction.
In the process of UE at receiving multicast traffic, when occuring cell reselection or cell update to other residential quarter, UE can inform that network side is from the information in the multicast service that receives by cell update message, when the multicast service of UE reception is not supported in new residential quarter, network side discharges the resource that UE uses, and comprises that UE carries out the channel resource that uplink feedback uses; When the multicast service of UE reception is supported in new residential quarter, new residential quarter may be according to the quantity of the UE that receives this multicast service, for distributing, UE carries out the new channel resource that uplink feedback uses, be UE and issue new position indication information, and notify old residential quarter to discharge the resource that UE uses, comprise discharging old position indication information.
When situation three: UE switches to other residential quarter, the release of position indication information or reconstruction.
When UE switches to other residential quarter, if UE has reported the situation of self receiving multicast traffic to the network side of cell-of-origin, and the network side of cell-of-origin distributes the uplink feedback resource for this UE, namely issued position indication information, and this uplink feedback resource is not released, and then the cell-of-origin can use handover request message with the advisory Target cell of the multicast service of UE reception; If perhaps UE does not report the situation of self receiving multicast traffic to the network side of cell-of-origin, then UE can inform Target cell with the situation of self receiving multicast traffic in handoff completion message.
When Target cell is supported the multicast service of UE reception, Target cell can be in switching request response, during perhaps the connection after UE switches to Target cell is set up, for UE distributes new uplink feedback channel resource, namely issue new position indication information to UE, in addition, Target cell can be deleted the original resource of using of UE in the notification source residential quarter, comprise that UE carries out the channel resource that uplink feedback uses, namely former residential quarter discharges the position indication information of UE; When Target cell was not supported the multicast service of UE reception, Target cell is the resource of notification source residential quarter deletion UE use directly, comprised that UE carries out the channel resource that uplink feedback uses.
Situation four: during newly-increased UE, the renewal of position indication information.
When the number of the UE that receives certain multicast service maintains default thresholding when following, its member also might constantly change, and some UE leave, some UE add, and the UE that leaves is as described in above-mentioned each situation, discharge the resource of its use, comprise the resource that uplink feedback uses.When new user adds fashionablely, network side can be distributed to new UE with the effective position indication information of being left.
In addition, in above-mentioned four kinds of situations enumerating, except can upgrading the position indication information of the UE that changes, can also when above-mentioned four kinds of situations occur, redistribute the uplink feedback resource of all UE that need to feed back, all UE that namely again feed back to needs issue position indication information.
Wherein, during the indication information of off-position, can need by the dedicated signaling notice UE off-position indication information of releasing resource.
The said method flow process is a preferred embodiment among the present invention, during specific implementation, if network side can be known the quantity of the UE that receives same multicast service and the ID of each UE in advance, then can omit step 201.
Above method to uplink feedback in the embodiment of the invention is described in detail, and the below is described in detail the system that carries out uplink feedback in the embodiment of the invention again.
Fig. 4 is the exemplary block diagram of the system of uplink feedback in the embodiment of the invention.As shown in Figure 4, this system comprises: base station and UE.
Wherein, the base station is used for the quantity that statistics receives the UE of same multicast service, when the quantity of the UE that receives same multicast service is lower than default thresholding, described multicast service is needed the downlink transfer of UE feedback, and issue feedback desired position indication information to UE.Wherein, position indication information can issue by high-level signaling.
UE is used for determining self to carry out the channel resource of uplink feedback according to described position indication information, and the downlink data packet to the multicast service that receives is carried out uplink feedback on the feedback channel of determining.
During specific implementation, the specific operation process of base station and UE can be consistent with the operating process described in the method flow shown in Figure 2, gives unnecessary details no longer one by one herein.Equally, if the base station can be known the quantity of the UE that receives same multicast service and the ID of each UE in advance, then can need not to add up the quantity of the UE that receives same multicast service.
Wherein, can there be the way of realization of multiple internal structure the base station when specific implementation, and Fig. 5 shows a kind of cut-away view wherein.Shown in the part of the solid line among Fig. 5, this base station can comprise: statistical module, the first downlink transfer module and information issue module.
Wherein, statistical module is used for the quantity that statistics receives the user equipment (UE) of same multicast service;
The first downlink transfer module is used for described multicast service being needed the downlink transfer of UE feedback when statistical module determines that the quantity of the UE of the same multicast service of reception is lower than default thresholding;
Information issues module and is used for issuing feedback desired position indication information to UE when statistical module determines that the quantity of the UE of the same multicast service of reception is lower than default thresholding.
Wherein, if the base station can be known the quantity of the UE that receives same multicast service and the ID of each UE in advance, then can need not to comprise statistical module in the base station.
Further, shown in the dotted portion among Fig. 5, this base station also can comprise: the second downlink transfer module is used for described multicast service being need not the downlink transfer of UE feedback when statistical module determines that the quantity of the UE of the same multicast service of reception is higher than default thresholding.
Wherein, corresponding with a kind of situation in the method flow shown in Figure 2 during specific implementation, namely network side issues the situation that reports indication information to UE, and this moment, statistical module can comprise: indication issues module and statistics Executive Module.
Wherein, indication issues module and reports indication information for issuing to UE.
The statistics Executive Module is used for the information (such as the multi-service information that will receive or receive) of the receiving multicast traffic that reports according to UE, and statistics obtains receiving the quantity of the UE of same multicast service.
In addition, during specific implementation, corresponding to situation four with the situation one of describing in the method flow shown in Figure 2, wherein the first downlink transfer module in a kind of specific implementation structure can comprise: the first signaling scheduling module, and/or, the second signaling scheduling module, and/or, the 3rd signaling scheduling module, and, the Packet Generation module.
Wherein, the first signaling scheduling module is used for when a subframe only has the multicast service of a dynamic dispatching, the control signal of this multicast service is sent at descending shared control signal channel, and the descending shared control signal channel that described control signal takies is arranged on after the shared descending shared control signal channel of the control signal of unicast service.
The second signaling scheduling module is used for when a subframe has the multicast service of a plurality of dynamic dispatchings, the control signal of each multicast service is sent at descending shared control signal channel, and the descending shared control signal channel that the control signal of each multicast service takies is arranged on after the descending shared control signal channel that the control signal of unicast service takies, in the descending shared control signal channel that the control signal of each multicast service takies, the information of the original position of uplink feedback channel corresponding to the corresponding multicast service of indication is set.
The 3rd signaling scheduling module is used for the control signal of multicast service is sent at descending shared control signal channel, or sends at high-rise channel.
The Packet Generation module wraps on the downstream data channel for the downlink data with multicast service and sends.
During specific implementation, corresponding to situation four with the situation one of describing in the method flow shown in Figure 2, the base station can further comprise: information updating module, be used for when UE discharges the multicast service that receives, or when UE carries out cell reselection or cell update to other residential quarter, or when UE switches to other residential quarter, or in the situation that UE quantity is lower than when presetting the newly-increased UE of thresholding, upgrade the position indication information of UE.Wherein, when upgrading the position indication information of UE, can specifically comprise discharging or redistributing issuing etc.
In addition, during specific implementation, become and be higher than default thresholding or corresponding by being higher than the situation that default thresholding becomes when being lower than default thresholding by being lower than default thresholding with the UE quantity of describing in the method flow shown in Figure 2, the base station can further comprise: information cancellation or restart module, be used for becoming when being higher than default thresholding by being lower than default thresholding in UE quantity, cancel the position indication information of described UE; Become when being lower than default thresholding by being higher than default thresholding in the quantity of UE, restart the position indication information of described UE.Wherein, cancellation and specifically comprising discharges and goes to enable etc., restarts can specifically comprise and rebuild and enable etc.
Wherein, UE can have the way of realization of multiple internal structure when specific implementation, and Fig. 6 shows a kind of cut-away view wherein.Shown in the part of the solid line among Fig. 6, this subscriber equipment can comprise: information receiving module, feedback channel determination module and uplink feedback module.
Wherein, information receiving module is used for receiving the position indication information that network side issues by high-level signaling.
The feedback channel determination module determines that for the position indication information that receives according to information receiving module UE carries out the channel resource of uplink feedback.
The uplink feedback module is carried out uplink feedback for the downlink data packet of the multicast service that on the determined feedback channel of feedback channel determination module UE is received.
During specific implementation, corresponding to situation four with the situation one of describing in the method flow shown in Figure 2, the feedback channel determination module can comprise: first resource pond feedback channel determination module, and/or, Secondary resource pond feedback channel determination module.
Wherein, the feedback channel that first resource pond feedback channel determination module is used for the position indication information UE that receives according to information receiving module with respect to the offset information of the original position of multicast service feedback channel and the original position of determined multicast service feedback channel, determines to carry out the channel resource of uplink feedback in the first resource pond in the first resource pond.
Secondary resource pond feedback channel determination module determines to carry out the channel resource of uplink feedback for the channel position of feedback channel in the Secondary resource pond of each UE of position indication information that receives according to information receiving module in the Secondary resource pond.
In addition, this subscriber equipment can further comprise: the multicast information reporting module is used for reporting to network side the information of self receiving multicast traffic, such as the multi-service information that will receive or receive.
Base station described in above-described embodiment can be base-station node (NodeB), also can be base station (eNodeB) in the evolution etc.
In the present specification, because the resource that up CQI takies is passed through the descending control signaling display notification by the base station, therefore the position indication that CQI is not taken resource in the present specification is described in detail, the resource that up CQI takies still can be by the base station by the descending control signaling display notification, and UE feeds back CQI according to this notice.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is preferred embodiment of the present invention; be not for limiting protection scope of the present invention; within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. the method for a multi-user feedback is characterized in that, the method comprises:
When the quantity of the UE that receives same multicast service is lower than default thresholding, the downlink transfer that described multicast service is needed the UE feedback, and issue feedback desired position indication information to UE, be used for UE according to described position indication information, determine self to carry out the channel resource of uplink feedback, and the downlink data packet to the multicast service that receives is carried out uplink feedback on the feedback channel of determining;
The described downlink transfer that needs UE to feed back to multicast service is: the control signal to described multicast service adopts the mode of dynamic dispatching to transmit;
When only having the multicast service of a dynamic dispatching in the subframe, described control signal to multicast service adopts the mode of dynamic dispatching to be transmitted as: the control signal of this multicast service sends at descending shared control signal channel, and the descending shared control signal channel that takies of described control signal is arranged on after the shared descending shared control signal channel of the control signal of unicast service;
Described position indication information is: the feedback channel of each UE in the first resource pond with respect to the offset information of the original position of multicast service feedback channel;
Described UE is according to position indication information, determine that the channel resource that self carries out uplink feedback is: UE is according to channel position and the default implicit expression corresponding relation of the descending shared control signal channel of receiving multicast traffic control signal, determine the original position at multicast service feedback channel described in the first resource pond, according to the feedback channel of each UE in described definite original position and the described position indication information offset information with respect to the original position of multicast service feedback channel in the first resource pond, determine in the first resource pond, to carry out the channel resource of uplink feedback;
When in the subframe multicast service of a plurality of dynamic dispatchings being arranged, described control signal to multicast service adopts the mode of dynamic dispatching to be transmitted as: the control signal of each multicast service sends at descending shared control signal channel, and the descending shared control signal channel that the control signal of each multicast service takies is arranged on after the descending shared control signal channel that the control signal of unicast service takies, in the descending shared control signal channel that the control signal of multicast service takies, the information of the original position of uplink feedback channel corresponding to the corresponding multicast service of indication is set;
Described position indication information is: the feedback channel of each UE in the first resource pond with respect to the offset information of the original position of the multicast service feedback channel that receives;
Described UE is according to position indication information, determine that the channel resource that self carries out uplink feedback is: UE is according to the indication information in the descending shared control signal channel of receiving multicast traffic control signal, determine the original position of institute's receiving multicast traffic feedback channel in the first resource pond, according to the feedback channel of each UE in described definite original position and the described position indication information offset information with respect to the original position of institute's receiving multicast traffic feedback channel in the first resource pond, determine in the first resource pond, to carry out the channel resource of uplink feedback.
2. the method for claim 1 is characterized in that, determines that the quantity of the UE of the same multicast service of reception is lower than before the default thresholding, and further comprise: statistics receives the quantity of the user equipment (UE) of same multicast service.
3. method as claimed in claim 2, it is characterized in that, the quantity that described statistics receives the UE of same multicast service is: network side issues to UE and reports indication information, UE is according to the described information that reports indication information to report self receiving multicast traffic to network side, the described information that network side reports according to UE, statistics obtains receiving the quantity of the UE of same multicast service.
4. method as claimed in claim 3, it is characterized in that, described UE is according to reporting indication information to report the information of self receiving multicast traffic to be to network side: UE is carried at the information of the multicast service that self will receive or receive and reports network side in the upstream message.
5. method as claimed in claim 4, it is characterized in that, described upstream message comprises: wireless resource control connection request, initial direct-sending, uply direct transfer, the Radio Resource control connection is set up and is finished, measurement report, switching are finished, cell update is finished, the Universal Terrestrial Radio Access Network registration zone upgrade finish, physics/transmission channel/radio bearer is reshuffled and is finished, add up response message or newly-increased specific messages.
6. the method for claim 1 is characterized in that, the control signal of described multicast service is when descending shared control signal channel sends, and within a modification cycle, the moment of dynamic dispatching is indicated to UE by high-rise channel.
7. the method for claim 1 is characterized in that, the method further comprises: when the quantity of the UE that receives same multicast service is higher than default thresholding, described multicast service be need not the downlink transfer of UE feedback.
8. method as claimed in claim 7 is characterized in that, the described downlink transfer that multicast service be need not UE feedback is: the control signal to described multicast service adopts the mode of persistent scheduling to transmit.
9. method as claimed in claim 8 is characterized in that, described control signal to multicast service adopts the mode of persistent scheduling to be transmitted as: the persistent scheduling control signal of described multicast service is sent at high-level signaling;
Perhaps be: the persistent scheduling control signal of described multicast service is sent at descending shared control signal channel;
Perhaps be: the persistent scheduling control signal of described multicast service is divided into two parts, and a part of signaling sends at high-rise channel, and another part signaling sends at descending shared control signal channel.
10. such as each described method in the claim 1 to 9, it is characterized in that, the method further comprises: when the quantity of described UE becomes when being higher than default thresholding by being lower than default thresholding, cancel the position indication information of described UE.
11. method as claimed in claim 10, it is characterized in that, the method further comprises: when the quantity of described UE becomes when being higher than default thresholding by being lower than default thresholding, when the next one modification cycle begins, the downlink transfer that needs UE feedback of described multicast service is changed to the downlink transfer that need not the UE feedback.
12. method as claimed in claim 11 is characterized in that, the method further comprises: when the quantity of described UE becomes when being lower than default thresholding by being higher than default thresholding, restart the position indication information of described UE.
13. method as claimed in claim 12, it is characterized in that, the method further comprises: when the quantity of described UE becomes when being lower than default thresholding by being higher than default thresholding, when the next one modification cycle begins, the downlink transfer that need not UE feedback of described multicast service is changed to the downlink transfer that needs the UE feedback.
14. method as claimed in claim 12, it is characterized in that, the position indication information of described cancellation UE is: notify the UE canceling position indication information with position indication information by dedicated signaling or by Broadcast Control Channel or by the control channel of multicast service;
The position indication information of the described UE of restarting is: restart position indication information by dedicated signaling or by Broadcast Control Channel or by the control channel notice UE of multicast service.
15. such as each described method in the claim 1 to 9, it is characterized in that, the method further comprises: when UE discharges the multicast service that receives, discharge the position indication information of described UE;
When UE carried out cell reselection or cell update to other residential quarter, the cell-of-origin discharged the position indication information of described UE;
When UE switched to other residential quarter, the cell-of-origin discharged the position indication information of described UE;
In the situation that UE quantity is lower than when presetting the newly-increased UE of thresholding, issue remaining effective position indication information to described newly-increased UE.
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| CN 200710145262 CN101369874B (en) | 2007-08-17 | 2007-08-17 | Multi-user feedback method, system, base station and customer equipment |
| PCT/CN2008/072023 WO2009024073A1 (en) | 2007-08-17 | 2008-08-18 | Method and system of multi-user feedback, method of downlink transmission, base station and user device |
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| CN 200710145262 CN101369874B (en) | 2007-08-17 | 2007-08-17 | Multi-user feedback method, system, base station and customer equipment |
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| CN101959161B (en) * | 2009-07-16 | 2014-12-10 | 中兴通讯股份有限公司 | Method for sending and receiving uplink fixed resource allocation signaling |
| CN102014505B (en) * | 2009-11-03 | 2013-09-11 | 电信科学技术研究院 | Method, equipment and system for resource allocation of upstream control channel |
| CN102281504A (en) * | 2010-06-13 | 2011-12-14 | 中兴通讯股份有限公司 | Method and system for uplink feedback |
| CN110365382B (en) * | 2012-05-10 | 2022-06-21 | 中兴通讯股份有限公司 | Indication configuration method of CSI feedback signaling and base station |
| WO2014121471A1 (en) * | 2013-02-06 | 2014-08-14 | 华为技术有限公司 | Method, base station and user equipment for data transmission and acquisition |
| CN103414578B (en) * | 2013-08-12 | 2017-05-17 | 杭州华三通信技术有限公司 | Message transmission method and equipment in MAC-in-MAC network |
| CN104620528B (en) * | 2013-09-05 | 2018-05-18 | 华为技术有限公司 | Base station and multicast packet send processing method |
| CN104838684B (en) * | 2013-11-22 | 2019-02-19 | 华为技术有限公司 | A kind of method for transmitting signals, user equipment and base station |
| CN105379318A (en) * | 2014-03-19 | 2016-03-02 | 华为技术有限公司 | Group communication apparatus and method |
| WO2017028005A1 (en) | 2015-08-14 | 2017-02-23 | 华为技术有限公司 | Feedback information transmission method, user equipment, and base station |
| GB2541390B (en) * | 2015-08-14 | 2021-10-20 | Tcl Communication Ltd | Systems and methods for multi-user communication |
| CN107295483A (en) * | 2016-03-31 | 2017-10-24 | 展讯通信（上海）有限公司 | A kind of base station and its group exhale the transmission method of data |
| US10798703B2 (en) * | 2016-12-22 | 2020-10-06 | Qualcomm Incorporated | Position of uplink short burst in new radio |
| CN106937333A (en) * | 2017-04-25 | 2017-07-07 | 上海斐讯数据通信技术有限公司 | Load balancing apparatus, system and method, a kind of WAP between antenna |
| CN108809496B (en) * | 2017-05-05 | 2023-09-05 | 华为技术有限公司 | Information processing method and equipment |
| CN111800734A (en) * | 2019-08-14 | 2020-10-20 | 维沃移动通信有限公司 | Data transmission method, device, equipment and medium |
| CN112399588A (en) * | 2019-08-16 | 2021-02-23 | 华为技术有限公司 | Method and apparatus for transmitting hybrid automatic repeat request HARQ feedback information |
| CN113972963B (en) * | 2020-07-22 | 2023-06-09 | 维沃移动通信有限公司 | Method and network device for determining target state information |
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| US8116262B2 (en) * | 2004-06-22 | 2012-02-14 | Rockstar Bidco Lp | Methods and systems for enabling feedback in wireless communication networks |
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