CN102573074B

CN102573074B - Method, system and apparatus for semi-persistent scheduling on backhaul link, and receiving method and apparatus thereof

Info

Publication number: CN102573074B
Application number: CN201110000525.1A
Authority: CN
Inventors: 马彰超; 刘建华; 沈晓东; 王竞; 刘光毅
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2011-01-04
Filing date: 2011-01-04
Publication date: 2014-10-08
Anticipated expiration: 2031-01-04
Also published as: CN102573074A

Abstract

The invention discloses a method, a system and an apparatus for semi-persistent scheduling (SPS) on a backhaul link, and a receiving method and an apparatus thereof. The SPS method comprises the following steps that: when a time corresponding to each downlink backhaul subframe is reached, an eNB determines relay UE that enters an activation state and no transmission resources are distributed to; according to the number of users that a current downlink backhaul subframe bears and an upper limit of the number of users that the current downlink backhaul subframe can bear, transmission resources are distributed; and corresponding subframe information that is configured to the downlink backhaul subframes that the transmission resources distributed to all the relay UE are located at in an SPS period as well as corresponding transmission resource information are sent to a relay node (RN), wherein the corresponding subframe information and the corresponding transmission resource information are used for indicating the RN to carry out data reception. By employing the above-mentioned technical scheme, a plurality of downlink backhaul subframes that are configured in an SPS period can be distributed to relay UE to carry out data transmission; and when service time of the relay UE is reached, transmission resources can be timely distributed to the relay UE; therefore, transmission time delay of a relay UE data packet can be reduced.

Description

Method for semi-persistently dispatching, method of reseptance and system and device on return link

Technical field

The present invention relates to communication technical field, relate in particular to method for semi-persistently dispatching, method of reseptance and system and device on a kind of return link.

Background technology

The introducing of via node (Relay Node, is abbreviated as RN) can effectively promote cell throughout and expand cell coverage area, improves the performance of Cell Edge User, thereby is considered to one of advanced technology in future mobile communication system.Relay cellular system as shown in Figure 1 will comprise base station (eNB) and one or more relay station (RN) in a macrocell.Mobile subscriber (UE) can select to access eNB and carry out direct communication, and this communication mode can be expressed as eNB → UE, and UE is wherein called direct-connected user (Macro UE) or and jumps user; UE also can select to access RN, then carries out double bounce trunking traffic by RN access eNB, and this communication mode is expressed as eNB → RN → UE, and UE is wherein called trunk subscriber or double bounce user (Relay UE).Wherein, the link that transmits data between eNB and RN is called return link (Backhaul Link), between eNB and UE and the link that transmits data between RN and UE be called access link (Access Link).

In real system, because half-duplex trunking diagram is easily realized and being widely accepted, be half-duplex mode at the defined Type I of 3GPPLTE-Adanced system RN.As shown in Figure 2, with reference to LTE-Advanced system TDD system frame structure 1, the radio frames of a 10ms comprises 10 subframes, these 10 subframes are designated respectively #0, #1......#9, and these 10 subframes are configured to respectively passback subframe for carrying return link transfer of data and for carrying the access subframe of access link transfer of data.Particularly, for downlink relay system, in passback subframe, RN receives the data from eNB by return link; In access subframe, eNB or RN send the data to user, in practical application, are maintenance and the backwards compatibility of LTERelease-8 (being abbreviated as Rel-8) system, and passback subframe adopts MBSFN mode to carry out semi-static configuration conventionally.Simultaneously, to adopt special descending control signaling R-PDCCH to indicate the resource scheduling information of return link at relaying return link, R-PDCCH takies Physical Downlink Shared Channel (the Physical Downlink Shared Channel of part LTE Rel-8, be abbreviated as PDSCH) corresponding physical resource, the R-PDCCH of different RN can adopt the mode of FDM orthogonal on frequency domain.In addition, the multiple users' that serve due to return link carrying RN business datum, after eNB end generally carries out polymerization by the business data packet of multiple Relay UE, carries out unified scheduling taking RN as unit.

Speech business is as the basic service of mobile communication system, its communication process is generally made up of state of activation and silent status, in state of activation, speech coder can produce the periodically frequent little business packet arriving, ip voice carrying (Voice-over-Internet-Protocol taking speed as 12.2kbit/s, be abbreviated as VoIP) business is example, speech coder produces a VoIP packet that fixed size is 40byte at active period every 20ms.In traditional LTE Rel-8 system, conventionally adopt semi-continuous scheduling (Semi-PersistentScheduling is abbreviated as SPS) scheme transmission VoIP business data packet.The basic thought of SPS is that the packet of initial transmission is carried out to continuous dispatching, and the packet retransmitting is adopted to dynamic dispatching, adopt SPS scheme in obtaining channel diversity gain, can save the expense of physical downlink control channel (PhysicalDownlink Control Channel, is abbreviated as PDCCH).Particularly, continuous dispatching is that eNB adopts fixing transformat to send packet to UE on fixed resource, and UE receives packet in predetermined resource, and does not need the instruction of corresponding control signal; Dynamic dispatching, eNB indicates the concrete transformat of UE and shared transfer resource at transmission time by control signal, and UE need to be known by encoded control signaling the resource at transformat and place.

In relay cellular system, for access link, eNB can be basically identical to the scheduling mode of UE with eNB in traditional LTE system to the scheduling mode of Relay UE employing to Macro UE or RN, adopts the SPS scheme in legacy system; And for return link, if directly adopt the SPS scheme in legacy system, there are the following problems for possibility:

In the SPS of traditional LTE system scheme, eNB is on the link between eNB and UE, to be directly that this UE configures transfer resource, for concrete certain UE, is this UE configuration transfer resource on some descending sub frames of eNB within a SPS cycle, and for the return link of relay system, this return link generally need to carry multiple users' of access RN business datum, in the SPS cycle, the arrival of business data packet will be more frequent, therefore, in a descending passback subframe within a SPS cycle, be only RN allocation of transmission resources, the Relay UE packet that the Relay UE packets need first arriving arrives after waiting for, and transmit in a descending passback subframe that is arranged to transfer of data within the current SPS cycle, thereby cause the propagation delay time of UE packet larger, especially the in the situation that of return link generation error of transmission, the data packet transmission time delay of multiple UE will significantly increase.

In sum, existing SPS mechanism is applied in to the increase that can cause trunk subscriber data packet transmission time delay on return link.

Summary of the invention

In view of this, the embodiment of the present invention provides method for semi-persistently dispatching, method of reseptance and system and the device on a kind of return link, adopts this technical scheme, can reduce the propagation delay time of trunk subscriber packet.

The embodiment of the present invention is achieved through the following technical solutions:

According to the embodiment of the present invention aspect, the method for semi-persistently dispatching on a kind of return link is provided, comprising:

In the time that the corresponding moment of current descending passback subframe arrives, base station determine the corresponding moment of current descending passback subframe and on enter the trunk subscriber of state of activation and corresponding same via node RN between a corresponding moment of descending passback subframe;

Determine the trunk subscriber that is not assigned with transfer resource in described trunk subscriber;

The number of users upper limit that can carry according to the number of users carrying in current descending passback subframe and current descending passback subframe, is respectively the trunk subscriber allocation of transmission resources that is not respectively assigned with transfer resource;

The descending passback subframe that is defined as the transfer resource place of each trunk subscriber distribution is configured corresponding sub-frame information within a SPS cycle;

The resource information of distributing by the described sub-frame information of determining, for each trunk subscriber, the mixed automatic retransfer request HARQ process number information of distributing for each trunk subscriber and the identification information that is used to indicate scheduling type, send to by descending control signaling the RN that each trunk subscriber is corresponding, be used to indicate described RN and carry out data receiver, wherein, the initial transmission that the scheduling type that is used to indicate the identification information instruction of scheduling type is data, and described descending control signaling adopts semi-continuous scheduling identification information to identify.

According to the embodiment of the present invention aspect, a kind of data receive method is provided, comprising:

In the time that the corresponding moment of current descending passback subframe arrives, via node RN monitors descending control signaling;

If RN monitors the initial transmission that the indicated scheduling type of identification information that described descending control signaling adopts semi-continuous scheduling identification information to identify and be used to indicate scheduling type is data, the mixed automatic retransfer request HARQ process number information that the descending passback subframe at the transfer resource place of obtain resource information that the each trunk subscriber for this RN of access that described base station sends by described descending control signaling distributes, distributing for each trunk subscriber is configured corresponding sub-frame information and distributes for each trunk subscriber within a SPS cycle;

Described resource information, HARQ process number information and described sub-frame information that preservation is obtained; And

Receive the packet of the trunk subscriber transmitting in current passback subframe according to described resource information, buffer memory after the described packet receiving is identified by corresponding sub-frame information and HARQ process number.

According to the embodiment of the present invention aspect, the system of the semi-continuous scheduling on a kind of return link is provided, comprising:

Base station and via node RN; Wherein:

Described base station, in the time that the corresponding moment of current descending passback subframe arrives, determine the corresponding moment of current descending passback subframe and on enter the trunk subscriber of state of activation and corresponding described RN between a corresponding moment of descending passback subframe; Determine the trunk subscriber that is not assigned with transfer resource in described RN; The number of users upper limit that can carry according to the number of users carrying in current descending passback subframe and current descending passback subframe, is respectively the trunk subscriber allocation of transmission resources that is not respectively assigned with transfer resource; The descending passback subframe that is defined as the transfer resource place of each trunk subscriber distribution is configured corresponding sub-frame information within a SPS cycle; And the resource information of distributing by the described sub-frame information of determining, for each trunk subscriber, the mixed automatic retransfer request HARQ process number information of distributing for each trunk subscriber and the identification information that is used to indicate scheduling type, send to described RN by descending control signaling; Wherein, the initial transmission that the scheduling type that is used to indicate the identification information instruction of scheduling type is data, and described descending control signaling adopts semi-continuous scheduling identification information to identify;

Described RN, in the time that the corresponding moment of current descending passback subframe arrives, monitoring descending control signaling; The initial transmission that the indicated scheduling type of identification information that described descending control signaling adopts semi-continuous scheduling identification information to identify and be used to indicate scheduling type if monitor is data, the HARQ process number information that the descending passback subframe at the resource information of distributing for each trunk subscriber of obtaining that described base station sends by described descending control signaling, the transfer resource place distributed for each trunk subscriber is configured corresponding sub-frame information and distributes for each trunk subscriber within a SPS cycle; Described resource information, HARQ process number information and described sub-frame information that preservation is obtained; And receive the packet of the trunk subscriber transmitting in current passback subframe according to described resource information, by the described packet receiving by corresponding sub-frame information and HARQ process number mark after buffer memory.

According to the embodiment of the present invention aspect, the device of the semi-continuous scheduling on a kind of return link is provided, comprising:

Excited users determining unit, for in the time that the corresponding moment of current descending passback subframe arrives, determine the corresponding moment of current descending passback subframe and on enter the trunk subscriber of state of activation and corresponding same via node RN between a corresponding moment of descending passback subframe;

Unallocated resource user determining unit, for determining that the definite trunk subscriber of described excited users determining unit is not assigned with the trunk subscriber of transfer resource;

Transfer resource allocation units, for the number of users upper limit that can carry according to the number of users carrying in current descending passback subframe and current descending passback subframe, be respectively each trunk subscriber allocation of transmission resources that is not assigned with transfer resource that described excited users determining unit is determined;

Sub-frame information determining unit, the descending passback subframe that is the transfer resource place of each trunk subscriber distribution for definite described transfer resource allocation units is configured corresponding sub-frame information within a SPS cycle;

Schedule information transmitting element, for the described sub-frame information that described sub-frame information determining unit is determined, described transfer resource allocation units are the resource information that each trunk subscriber distributes, the mixed automatic retransfer request HARQ process number information of distributing for each trunk subscriber and the identification information that is used to indicate scheduling type, send to by descending control signaling the RN that each trunk subscriber is corresponding, be used to indicate described RN and carry out data receiver, wherein, the initial transmission that the scheduling type that is used to indicate the identification information instruction of scheduling type is data, and described descending control signaling adopts semi-continuous scheduling identification information to identify.

According to the embodiment of the present invention aspect, a kind of base station is provided, comprise the semi-continuous scheduling device on above-mentioned return link.

According to the embodiment of the present invention aspect, a kind of data sink is provided, comprising:

Monitoring means, in the time that the corresponding moment of current descending passback subframe arrives, monitoring descending control signaling;

The first schedule information acquiring unit, adopt semi-continuous scheduling identification information to identify for monitor described descending control signaling at described monitoring means, and the initial transmission that the indicated scheduling type of the identification information that is used to indicate scheduling type is data, obtain the resource information of distributing for accessing each trunk subscriber of this RN that described base station sends by described descending control signaling, the mixed automatic retransfer request HARQ process number information that the descending passback subframe at the transfer resource place of distributing for each trunk subscriber is configured corresponding sub-frame information and distributes for each trunk subscriber within a SPS cycle,

Schedule information storage unit, the described resource information, HARQ process number information and the described sub-frame information that obtain for preserving described schedule information acquiring unit;

The first data receiver unit, receives the packet of the trunk subscriber transmitting in current passback subframe for the described resource information of obtaining according to described schedule information acquiring unit;

The first data storage cell, buffer memory after identifying by corresponding sub-frame information and HARQ process number for the described packet that described the first data receiver unit is received.

According to the embodiment of the present invention aspect, a kind of via node is provided, comprise above-mentioned data sink.

Above-mentioned at least one technical scheme providing by the embodiment of the present invention, in the time that the corresponding moment of each descending passback subframe arrives, can be according to entering state of activation but be not assigned with the trunk subscriber of transfer resource in base station, the number of users upper limit allocation of transmission resources that can carry according to the number of users carrying in current descending passback subframe and current descending passback subframe, and the descending passback subframe at the transfer resource place of distributing for each trunk subscriber is configured to corresponding sub-frame information within a SPS cycle and corresponding resource information sends to RN, be used to indicate described RN and carry out data receiver, the relevant information that can send according to base station in RN side receives data on corresponding transfer resource.Adopt this technical scheme, owing to being that the multiple descending passback subframe that configures in a SPS cycle can be assigned to trunk subscriber and carries out transfer of data, with respect to traditional SPS mechanism is directly applied in to the technical scheme on return link, the business hours of trunk subscriber is while arrival, can be this trunk subscriber allocation of transmission resources in time, thereby reduce the propagation delay time of trunk subscriber packet.

Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in write specification, claims and accompanying drawing.

Brief description of the drawings

Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention with the embodiment of the present invention one, is not construed as limiting the invention.In the accompanying drawings:

The relay cellular system schematic diagram of Fig. 1 for providing in background technology;

The LTE-Advanced system TDD system-frame schematic diagram of Fig. 2 for providing in background technology;

The eNB end method for semi-persistently dispatching flow chart one that Fig. 3 provides for the embodiment of the present invention one;

The flow chart for trunk subscriber allocation of transmission resources that Fig. 4 provides for the embodiment of the present invention one;

The schematic diagram of the descending return link SPS scheme that Fig. 5 provides for the embodiment of the present invention one;

The distribution schematic diagram of SPS process in the lower return link that Fig. 6 provides for the embodiment of the present invention one;

The eNB that Fig. 7 provides for the embodiment of the present invention one holds the flowchart 2 of the semi-continuous scheduling of realizing;

Fig. 8 holds the data receive method flow chart one providing for the RN that the embodiment of the present invention two provides;

The form schematic diagram of the HARQ buffer area that Fig. 9 provides for the embodiment of the present invention two;

The RN that Figure 10 provides for the embodiment of the present invention two holds the flowchart 2 of the data receiver of realizing;

Semi-continuous scheduling device schematic diagram one on the return link that Figure 11 provides for the embodiment of the present invention three;

The schematic diagram of the transfer resource allocation units that Figure 12 provides for the embodiment of the present invention three;

Semi-continuous scheduling device schematic diagram two on the return link that Figure 13 provides for the embodiment of the present invention three;

The data sink schematic diagram one that Figure 14 provides for the embodiment of the present invention four;

The data sink schematic diagram two that Figure 15 provides for the embodiment of the present invention four;

The data sink schematic diagram three that Figure 16 provides for the embodiment of the present invention four;

Semi-continuous scheduling system schematic on the return link that Figure 17 provides for the embodiment of the present invention five;

The deployed position schematic diagram of RN in the simulation process that Figure 18 provides for the embodiment of the present invention;

The comparison diagram of the emulation one that Figure 19 provides for the embodiment of the present invention;

The comparison diagram of the emulation two that Figure 20 provides for the embodiment of the present invention;

The comparison diagram of the emulation three that Figure 21 provides for the embodiment of the present invention.

Embodiment

In order to provide the implementation of the propagation delay time that reduces trunk subscriber packet, the embodiment of the present invention provides method for semi-persistently dispatching, method of reseptance and system and the device on a kind of return link, below in conjunction with Figure of description, the preferred embodiments of the present invention are described, be to be understood that, preferred embodiment described herein only, for description and interpretation the present invention, is not intended to limit the present invention.And in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.

Embodiment mono-

The embodiment of the present invention one provides the method for semi-persistently dispatching on a kind of return link, the method is mainly used in the transfer of data on the return link between eNB and RN, and the method is mainly implemented in base station side, unified by base station is each trunk subscriber allocation of transmission resources.

The core concept of the method for semi-persistently dispatching on the return link that the embodiment of the present invention one provides is: eNB can be within the same SPS cycle for multiple trunk subscribers of a RN of access distribute multiple SPS processes, for carrying the transfer of data of multiple trunk subscribers that this RN serves.ENB is that the initial transmission of each SPS process distributes a specific passback subframe in the SPS cycle to carry, and indicates the different SPS processes in the same SPS cycle by introducing SPS process number.For each SPS process, decide which user assignment that RN is served to transmit thereon by eNB, complete after transfer resource distribution, transfer of data flow process is identical with the SPS transmission method of traditional Rel-8 system, and the embodiment of the present invention is no longer elaborated to concrete data transmission procedure.Wherein:

The SPS process of distributing for trunk subscriber, for identifying the data transmission procedure of this trunk subscriber, particularly, is being distributed after SPS process for trunk subscriber, is further the descending passback sub-frame resources that this SPS course allocation is carried corresponding transfer of data.Determining after the SPS process that trunk subscriber is corresponding, need further definite SPS process number corresponding to this SPS process, this SPS process number can be within a SPS cycle, to be configured corresponding sub-frame information for the descending passback subframe at the transfer resource place of this trunk subscriber distribution.Particularly, the business datum of same group of trunk subscriber can be assigned in a SPS process carries out transfer of data, this SPS process is fixed at SPS process number corresponding to each SPS cycle, that is to say, if first the descending passback subframe being configured in the current SPS cycle is assigned to A group trunk subscriber, corresponding SPS process is carried out transfer of data, so in the next SPS cycle, if the not end of transmission of data of this A group trunk subscriber, first the descending passback subframe being configured in this SPS cycle still needs to distribute to this A group trunk subscriber and carries out transfer of data.If part user data transmission is complete in this A group, needs to upgrade resource corresponding to this SPS process and distribute, until the whole end of transmissions of user data in this group discharge this SPS process.Wherein, same group of trunk subscriber refers between two corresponding moment of descending passback subframe in state of activation and is not assigned with the trunk subscriber of transfer resource.

Particularly, the method for semi-persistently dispatching that the embodiment of the present invention one proposes comprises multi-process SPS pre-allocation process and the dynamic retransmission processes of SPS, wherein, multi-process SPS pre-allocation process is mainly responsible for the initial transmission of the trunk subscriber pre-allocation of resources in multiple SPS processes; The dynamic retransmission processes of SPS is mainly responsible for the redundancy versions of the packet of error of transmission in corresponding SPS process to carry out dynamic dispatching.

The method for semi-persistently dispatching that this embodiment mono-provides, base station can, in the time that the corresponding moment of each descending passback subframe arrives, be detected the trunk subscriber in state of activation in current system, and carry out the relevant scheduling such as transfer resource distribution.Particularly, in the time that the corresponding moment of current descending passback subframe arrives, the main scheduling process that carry out base station as shown in Figure 3, mainly comprises the steps that 301 to step 304:

Step 301, base station determine the corresponding moment of current descending passback subframe and on enter the trunk subscriber of state of activation and corresponding same via node RN between a corresponding moment of descending passback subframe.

In this step 301, because base station is in the time that the corresponding moment of each descending passback subframe arrives, all need to enter in detection system the trunk subscriber of state of activation, the line correlation transfer resource of going forward side by side configuration, therefore, in this step 301, base station only need to determine the corresponding moment of current descending passback subframe and on enter the trunk subscriber of state of activation and corresponding same via node RN between a corresponding moment of descending passback subframe.

The trunk subscriber that is not assigned with transfer resource in the trunk subscriber that enters state of activation is determined in step 302, base station.

In this step 302, the trunk subscriber of determining due to step 301 may be the trunk subscriber that the SPS cycle before this SPS cycle enters state of activation and be assigned with transfer resource, therefore, in this step, the trunk subscriber distribution related resource that only need to not be assigned with transfer resource for newly entering state of activation, therefore, the trunk subscriber that is not assigned with transfer resource in the trunk subscriber that enters state of activation need to be determined in base station, particularly, base station can distribute relative recording to determine the trunk subscriber that enters state of activation and be not assigned with transfer resource according to the resource of self.

The number of users upper limit that step 303, base station can be carried according to the number of users carrying in current descending passback subframe and current descending passback subframe, is respectively the trunk subscriber allocation of transmission resources that is not respectively assigned with transfer resource.

In this step 303, modulation coding mode (the Modulation and Coding Scheme that the link average quality situation that can feed back according to RN for trunk subscriber allocation of transmission resources obtain, MCS), in this passback subframe of preassignment, enough carry some Resource Block of a packet.

The descending passback subframe that step 304, base station are defined as the transfer resource place of each trunk subscriber distribution is configured corresponding sub-frame information within a SPS cycle.

In this step 304, according to the above-mentioned definition to SPS process number, the descending passback subframe that is defined as the transfer resource place of trunk subscriber distribution is configured corresponding sub-frame information and is defined as the SPS process number that each trunk subscriber distributes within a SPS cycle, particularly, definite mode of this SPS process number is as follows:

N _{sps_process}＝N _backhaul％N _{backhaul_period}

Wherein, N _{sps_process}represent SPS process number, N _backhaulrepresent passback subframe numbers, N _{backhaul_period}represent the passback sub-frame number of system configuration in the SPS cycle, be utilized as passback subframe numbers corresponding to the descending passback subframe at the transfer resource place that this trunk subscriber distributes divided by the descending passback sub-frame number configuring in the SPS cycle, the descending passback subframe that obtains the transfer resource place of distributing for this trunk subscriber is configured corresponding sub-frame information within a SPS cycle.

Resource information that step 305, base station are distributed by definite sub-frame information (being SPS process number), for each trunk subscriber, the HARQ process number information of distributing for each trunk subscriber and the identification information that is used to indicate scheduling type, send to by descending control signaling the RN that each trunk subscriber is corresponding.

In this step 305, base station sends to the relevant schedule information of RN to be used to indicate RN to carry out data receiver, wherein, the initial transmission that the scheduling type that is used to indicate the identification information instruction of scheduling type is data, and this descending control signaling adopts semi-continuous scheduling identification information to identify.

So far, base station is at current descending passback subframe due in, for the flow process of the schedule informations such as trunk subscriber allocation of transmission resources finishes.

In actual system, in the SPS cycle, generally include multiple descending passback subframes, for example, in the VoIP business of 12.2kbit/s, a SPS cycle is 20ms, this SPS cycle can comprise 4 descending passback subframes.By the execution of the corresponding flow process of Fig. 3, within a SPS cycle, eNB can according to the trunk subscriber quantity in state of activation and each trunk subscriber for the difference of business due in, for this RN (i.e. descending passback subframe in a corresponding SPS cycle) in return link resource distributes one or more SPS processes, and the user assignment that this RN is served carries out transfer of data on corresponding SPS process, be the continuous dispatching information such as position and SPS process number of its configuring transmission format, shared resource.

The embodiment of the present invention one also provides Fig. 3 preferred implementation of the step 303 that corresponding flow process comprises, specific as follows:

The number of users upper limit that base station can be carried according to the number of users carrying in current descending passback subframe and current descending passback subframe, is respectively the trunk subscriber allocation of transmission resources that is not respectively assigned with transfer resource, as shown in Figure 4, mainly comprises the steps:

Step 401, determine that the number of users carrying in current descending passback subframe does not reach the number of users upper limit that current descending passback subframe can be carried.

Step 402, judge whether the number of users carrying in current descending passback subframe reaches the corresponding number of users upper limit, if not, execution step 403; If so, perform step 404.

Step 403, the transfer resource in current descending passback subframe is distributed to this and is not assigned with the trunk subscriber of transfer resource, the descending passback subframe that is the transfer resource place of this trunk subscriber distribution that is not assigned with transfer resource is current descending passback subframe, so far, for the flow process of current trunk subscriber allocation of transmission resources finishes.

Step 404, the transfer resource in the descending passback subframe arriving after the corresponding current descending passback subframe moment is distributed to this and is not assigned with the trunk subscriber of transfer resource, the descending passback subframe that is the transfer resource place of this trunk subscriber distribution that is not assigned with transfer resource is the descending passback subframe arriving afterwards in the corresponding moment of current descending passback subframe, so far, for the flow process of current trunk subscriber allocation of transmission resources finishes.

By the flow process described in Fig. 4, it can be each trunk subscriber Resources allocation in state of activation that needs allocation of transmission resources, particularly, if desired the trunk subscriber of allocation of transmission resources is multiple, can be according to the number of users situation of carrying according to current descending return link, and the plurality of trunk subscriber allocation of transmission resources of behavior, also can be followed successively by the plurality of trunk subscriber Resources allocation.

In the step 401 that the corresponding flow process of Fig. 4 that the embodiment of the present invention one provides comprises, definite mode of the number of users upper limit that can carry in current descending passback subframe, can be as follows:

According at least one information in the average state of activation Duration Information after the average channel quality information of current system bandwidth information, return link and multi-user's polymerization, determine the number of users upper limit that this descending passback subframe can be carried.

A preferred implementation of determining the number of users upper limit that can carry of descending passback subframe is as follows:

First for example, according to the average channel quality information of return link and user's average data bag size (VoIP business, 320 bits/packet), obtain the required number of resources of each user data package, then calculate according to system bandwidth information the trunk subscriber that return link can carry and count the upper limit, and then the number of users upper limit is carried out to accommodation according to the average state of activation duration after multi-user's polymerization.For example, suppose under 5M bandwidth (passback sub-frame resources number of blocks is 25), the data of extrapolating every user according to return link average channel quality need 1 Resource Block, in the situation that not considering that protocol overhead is saved in multi-user's polymerization meeting, on the trunk subscriber number that this passback subframe can be carried, be limited to 25, if to require signaling consumption under semi-continuous scheduling be dynamic dispatching 1/10, so, this higher limit need be adjusted into 20.

Be to be understood that, the process of the number of users upper limit that above-described definite this descending passback subframe can be carried is only for implementing the preferred implementation of the embodiment of the present invention, in practical application, can arrange neatly, for example, only go out according to current system bandwidth information estimator the number of users upper limit that this descending passback subframe can be carried, will not enumerate herein.

The embodiment of the present invention one also provides the preferred implementation of the corresponding flow process of Fig. 4, and for this preferred implementation, detailed process is as follows:

Generally, after for trunk subscriber distribution SPS process, this SPS process should be positioned at apart from the nearest passback subframe of this customer service due in, to reduce Forwarding Delay.Fig. 5 has provided the schematic diagram of descending return link SPS scheme.Supposing the system within a SPS cycle for RN has configured N descending passback subframe, the subframe (N=4 here) that in figure, BL (Backhaul Link) indicates.The residing TTI of these passback subframes is designated as respectively to T1, T2 ... TN.If in the time that the corresponding moment of current descending passback subframe arrives, there is a trunk subscriber in state of activation, suppose business due in Tarrive (1≤n≤N between Tn-1 and Tn of this user, T0 represents last the passback subframe in the SPS cycle), that eNB only need be for RN distributes a SPS process in the passback subframe in Tn moment.As indicated in Fig. 5, according to this trunk subscriber due in, the SPS process of distributing for this trunk subscriber should be positioned at its due in first BL afterwards, i.e. second BL of corresponding configuration of this SPS cycle.

Whether the situation shown in Fig. 5 is the in the situation that of initial configuration, do not consider to distribute on the BL of SPS process to have carried in the situation of trunk subscriber.In the preferred implementation that the embodiment of the present invention one provides, in system, there is the user in state of activation, and distributed a SPS process in the passback subframe in Tn moment, with the T of stylish excited users _arrive∈ (T _n-1, T _n).Now, first eNB should judge whether the number of users transmitting in the SPS process of having distributed has reached the upper limit of the trunk subscriber quantity that this passback subframe can carry.Concrete point following two kinds of situations are processed:

If the trunk subscriber quantity being assigned in the passback subframe in Tn moment does not exceed the number of users upper limit that this descending passback subframe can be carried, now eNB is pre-assigned to the trunk subscriber of this new activation in existing SPS process and transmits (being corresponding above-mentioned steps 403).

If the trunk subscriber quantity being assigned in the passback subframe in Tn moment has reached the number of users upper limit that this descending passback subframe can be carried, now eNB need be a SPS process of the new distribution of RN in the passback subframe after the Tn moment, and the trunk subscriber newly activating is pre-assigned in this SPS process and transmits (being corresponding above-mentioned steps 404).Fig. 6 has provided in above-mentioned situation the distribution schematic diagram of SPS process in return link, as shown in Figure 6, supposing the system in the Tn moment for RN has distributed a SPS process 1, second BL that this SPS process 1 was configured under the corresponding current SPS cycle, the user's of this stylish activation Tarrive is also between Tn-1 and Tn, but the number of users being assigned in SPS process 1 has reached the number of users upper limit that can carry in this passback subframe, so in this case, eNB is pre-assigned to the trunk subscriber of this new activation in the SPS process 2 in Tn+1 (1≤n≤N-1) moment, be the 3rd BL being configured under the current SPS cycle, certainly before distributing, also need to determine that the Tn+1 moment trunk subscriber quantity of the corresponding upper carrying of BL does not reach the number of users upper limit that this BL can carry, otherwise select the descending passback subframe BL at the SPS process place in Tn+2 (1≤n≤N-1) moment.

The embodiment of the present invention one also provides Fig. 3 preferred implementation of the step 305 that corresponding flow process comprises, specific as follows:

Base station to RN send scheduling of resource relevant information time, except sending definite SPS process number, be the resource information of each trunk subscriber distribution, the identification information that also needs to be sent as the HARQ process number information of each trunk subscriber distribution and be used to indicate scheduling type.Wherein, base station is that the HARQ process number information of each trunk subscriber distribution and the process that is used to indicate the identification information of scheduling type adopt the scheme adopting in traditional semi-continuous scheduling, for the scheme adopting in traditional semi-continuous scheduling, is described as follows:

In tradition semi-continuous scheduling scheme, provide Radio Resource control (the RadioResource Control in LTE Rel-8 system, be abbreviated as RRC) and media access control (Medium Access Control, is abbreviated as MAC) consensus standard for the processing procedure of semi-continuous scheduling.Wherein, base station end can be that user side has configured semi-continuous scheduling cell-radio network and authenticates (Semi-PersistentScheduling Cell Radio Network Temporary Identifier temporarily by RRC signaling, be abbreviated as SPS C-RNTI), reserved mixed automatic retransfer request (Hybrid Automatic Repeat reQuest, is abbreviated as HARQ) process number and the SPS cycle of semi-continuous scheduling.Wherein, SPS C-RNTI is used to refer to scheduling type, and the scheduling type of its instruction comprises SPS startup, amendment, release and the re-transmission for SPS.

In tradition semi-continuous scheduling scheme, LTE system is by special definition new data indicator (New DataIndicator, be abbreviated as NDI) value distinguish new data and SPS and retransmit, wherein value 0 represents the transmission of new data, value 1 represents the re-transmission of SPS.Receiving terminal is at each TTI (Transmission TimeInterval, Transmission Time Interval) in the scheduling downlink resource of monitoring in PDCCH be for which kind of RNTI, if for C-RNTI, user side carries out the reception of dynamic dispatching, ignores the reception of SPS; If for SPS C-RNTI, first user side determines whether the re-transmission of SPS according to NDI, retransmit if, corresponding HARQ information is sent in HARQ entity, retransmit the operations such as merging, if for startup or the amendment of SPS, carry out the reception of SPS, the release of SPS if, user side is released in the operation of carrying out SPS reception in predefine resource.If this user's scheduling downlink resource not in current PDCCH, and now in the SPS predefine moment, user side carries out the reception of continuous dispatching in predefined resource according to predefine transformat.Wherein, the HARQ process number N of the packet of continuous dispatching _{process_id}computing formula as follows:

N _{process_id}＝[Floor(T _{c_tti}/T _period)]％N _{config_process}

Wherein: T _{c_tii}represent the TTI at current time place, T _periodrepresent the SPS cycle, N _{config_process}represent the reserved HARQ process number of SPS, T _{c_tti}computing formula as follows:

T _{c_tti}＝SFN×10+N _subframe

Wherein: SFN (System Frame Number) represents system wireless frame number, N _subframerepresent current subframe numbers.

Above embodiment mainly describes the pre-configured process that base station is trunk subscriber in detail, for the process of the schedule informations such as the initial transmission allocation of transmission resources of trunk subscriber, determine according to said process after the scheduling resources such as rear transfer resource, resource based on determining is carried out continuous dispatching transmission to each trunk subscriber, for RN side, the corresponding scheduling resource sending according to base station, carries out corresponding reception & disposal.Particularly, be not respectively to be assigned with after the trunk subscriber allocation of transmission resources of transfer resource in base station, also comprise:

On the transfer resource distributing for each trunk subscriber, transmit respectively the packet of each trunk subscriber, wherein, if the corresponding same descending passback subframe of the transfer resource that multiple trunk subscribers distribute, carries out the packet of the plurality of trunk subscriber transmitting in the descending passback subframe of correspondence after polymerization processing.

On the basis of initial transmission, on the transfer resource distributing for each trunk subscriber, transmit after the packet of each trunk subscriber respectively, if determine and exist after the packet of error of transmission in base station, base station also needs the further data for error of transmission to retransmit configuration.

The detailed re-transmission layoutprocedure that the embodiment of the present invention one provides is as follows:

The HARQ process number information of distributing by the SPS process number distributing for trunk subscriber corresponding to this packet, for trunk subscriber corresponding to this packet and the identification information that is used to indicate scheduling type, send to the corresponding RN of the corresponding trunk subscriber of described packet by descending control signaling; Wherein, the scheduling type that is used to indicate the identification information instruction of scheduling type is data re-transmission, and this descending control signaling adopts semi-continuous scheduling identification information to identify.

Preferably, can send different information according to the quantity of the SPS process of distributing in system, as follows respectively:

1, the re-transmission under the single SPS process of system assignment:

Just the same with the SPS re-transmission in traditional Rel-8 system, eNB adopts dynamic dispatching scheme, is dynamically notified the arrival of RN retransmission data packet may by R-PDCCH signaling, comprises the information such as transformat, shared resource, HARQ process number.

2, in system, distribute the re-transmission under multiple SPS processes:

ENB carries out dynamic dispatching taking the new data packets after multiple user's polymerizations as unit.But owing to there are multiple SPS processes, eNB also needs to notify the current retransfer scheduling of RN for which SPS process to carry out, and distinguishes different SPS processes by introduce SPS process number in R-PDCCH signaling.

In order to understand better the embodiment of the present invention, below describe the concrete scheme of the embodiment of the present invention one as an example of the Type IRelay that defines in 3GPP TR36.814 example, but be not limited to the RN of this type.

As shown in Figure 7, the semi-continuous scheduling process that eNB end is realized, mainly comprises the steps:

Step 701, eNB end are carried out multi-process SPS preassignment, arrive situation, for RN distributes one or more SPS process according to the business of the trunk subscriber quantity in state of activation and each trunk subscriber.

Step 702, the resource, transformat and the SPS process number that SPS are used by R-PDCCH signaling are informed RN.

Step 703, successively check each RN whether have SPS error of transmission packets need retransmit, if needed, dynamic dispatching retransmits, and by resource, transformat, HARQ process number and the SPS process number at R-PDCCH signaling instruction RN end SPS retransmission data packet may place.

If there is a jumping user in step 704 system, return link surplus resources is distributed to a jumping user, complete this time scheduling.

Embodiment bis-

The embodiment of the present invention two provides a kind of data receive method, the method is mainly used in the transfer of data on the return link between eNB and RN, and the method is mainly implemented in RN side, and the resource scheduling information being issued according to base station by RN is carried out the reception of related data.

As shown in Figure 8, the data receive method that the embodiment of the present invention two provides, mainly comprises the steps:

Step 801, in the time that the corresponding moment of current descending passback subframe arrives, via node RN monitors descending control signaling.

Step 802, judge whether to detect schedule information on descending control signaling, if not, execution step 803, if so, performs step 804.

In this step 802, judge whether to detect schedule information on descending control signaling, judge whether this descending control signaling adopts semi-continuous scheduling identification information to identify.

Step 803, in the time that predefine transmission time arrives, receive data, so far, handling process when the corresponding moment of current descending passback subframe arrives finishes.

The indicated scheduling type of the identification information that is used to indicate scheduling type that step 804, definite schedule information detecting comprise, if the initial transmission of designation data, execution step 805～step 806; If designation data retransmits, execution step 807～step 808.

Step 805, obtain the schedule information that base station sends by described descending control signaling and preserve.

The HARQ process number information that the descending passback subframe at the transfer resource place of in this step 805, be included as resource information that the each trunk subscriber of this RN of access distributes in the schedule information of obtaining, distributing for each trunk subscriber is configured corresponding sub-frame information (being SPS process number) and distributes for each trunk subscriber within a SPS cycle.Particularly, preserve the schedule information of obtaining and be used to indicate follow-up data reception.

Step 806, the resource information comprising according to schedule information receives the packet of the trunk subscriber transmitting in current passback subframe, buffer memory after the packet receiving is identified by corresponding SPS process number and HARQ process number, so far handling process when, the corresponding moment of current descending passback subframe arrives finishes.

Step 807, obtain the schedule information that base station sends by described descending control signaling.

In this step 807, the descending passback subframe that is included as the transfer resource place of trunk subscriber distribution corresponding to retransmission data packet may in the schedule information of obtaining is configured corresponding sub-frame information (being SPS process number), is the HARQ process number information that trunk subscriber corresponding to this retransmission data packet may distributes within a SPS cycle.In practical application, if only have a SPS process in system, in the schedule information sending, can not comprise SPS process number.

SPS process number and HARQ process number information that step 808, basis are obtained, search the SPS process number stored in buffer memory with obtain and the packet of described HARQ process number information matches, and retransmit after to processing data packets according to the re-transmission form indication information of setting, so far handling process when, the corresponding moment of current descending passback subframe arrives finishes.

Particularly, in above-mentioned steps 803, in the time that predefine transmission time arrives, receive data, specifically comprise the steps:

The resource information of distributing according to the each trunk subscriber of preserving and be the SPS process number that each trunk subscriber distributes, determines whether the current descending passback subframe correspondence moment is the predefine time of reception;

If so, be received in the packet transmitting in current descending passback subframe, and corresponding HARQ process number and the SPS process number (method that can provide according to above embodiment mono-calculates HARQ process number and SPS) of packet receiving is provided;

The packet of reception is identified to rear buffer memory by the described HARQ process number and the SPS process number that calculate.

Particularly, when RN receives data, need to carry out buffer memory, in practical application, can in RN, set up slow HARQ buffer area, as shown in Figure 9, when eNB is RN while having distributed multiple SPS process, RN end need to arrange respectively harq buffer district for the different HARQ processes of different SPS processes to the form of this HARQ buffer area.When RN receives after data, according to SPS process number corresponding to these data and HARQ process number, store these data into corresponding buffer zone.Particularly, the packet receiving in the predefine moment for RN, need to implicitly calculate HARQ process number and SPS process number (circular is consistent with the computational process in above-described embodiment one) that this packet is corresponding.

Particularly, in above-mentioned steps 808, RN gets after the corresponding HARQ process number and SPS process number of retransmission data packet may, search the packet of SPS process number that store and that obtain in HARQ buffer area and HARQ process number information matches, and retransmit after to processing data packets according to the re-transmission form indication information of setting.Wherein,, merge by the corresponding data bag in redundancy versions and the harq buffer district of this retransmission data packet may processing data packets according to the re-transmission form indication information of setting, concrete processing procedure can adopt prior art, repeats no more herein.

In practical application, whether RN end carries out the reception of startup, amendment or the release of continuous dispatching for the scheduling of SPS C-RNTI by monitoring R-PDCCH.For startup, the amendment of SPS continuous dispatching, RN end needs the reception of stores schedule information for predefine transmission afterwards, comprises resource, the SPS process number etc. at transformat, place.If do not receive startup, amendment or the release of continuous dispatching in current TTI, RN is by monitoring in current passback subframe whether receive continuous dispatching in predefine transmission time.

In order to understand better the embodiment of the present invention, below describe the concrete scheme of the embodiment of the present invention two as an example of the Type IRelay that defines in 3GPP TR36.814 example, but be not limited to the RN of this type.

As shown in figure 10, the DRP data reception process that RN end is realized, mainly comprises the steps:

Step 1001, RN receive the data moment at each return link, in monitoring descending control signaling, whether contain the scheduling downlink resource for SPS C-RNTI, if so, perform step 1002; If not, execution step 1003.

Step 1002, RN, according to the resource scheduling information sending in descending control signaling, carry out corresponding scheduling flow.

The concrete processing procedure of this step 1002 is as follows:

Receive the scheduling for SPS C-RNTI, RN end carries out respectively the reception of activation, amendment and the SPS re-transmission of SPS by detecting the value of NDI, if the activation of SPS or amendment, first carry out packet judgement, and feeding back ACK/nack message, then, transformat, shared resource and the SPS process number of storage continuous dispatching is for the reception of predefine transmission afterwards, if SPS retransmits, the packet in redundancy versions and SPS process number and the indicated harq buffer district of HARQ process number is retransmitted merge after decoding, feeding back ACK/nack message;

Step 1003, execution predefine receiving course.

The concrete processing procedure of this step 1003 is as follows:

Check that current passback subframe is whether in predefine time of reception, if in predefine transmission time, RN end carries out the reception of continuous dispatching in predefined resource according to predefine transformat, and the packet receiving is put in corresponding SPS process number and the indicated harq buffer district of HARQ process number and carried out decoding, and feeding back ACK/nack message, finish this time to receive; If not in predefine transmission time, finish this time operation.

Embodiment tri-

The embodiment of the present invention three provides the device of the semi-continuous scheduling on a kind of return link, and this device can be arranged in base station, can reduce the propagation delay time of trunk subscriber packet by this device.

As shown in figure 11, the semi-continuous scheduling device on the return link that the embodiment of the present invention three provides, mainly comprises:

Excited users determining unit 1101, unallocated resource user determining unit 1102, transfer resource allocation units 1103, sub-frame information determining unit 1104 and schedule information transmitting element 1105;

Wherein:

Excited users determining unit 1101, for in the time that the corresponding moment of current descending passback subframe arrives, determine the corresponding moment of current descending passback subframe and on enter the trunk subscriber of state of activation and corresponding same via node RN between a corresponding moment of descending passback subframe;

Unallocated resource user determining unit 1102, for determining that the definite trunk subscriber of excited users determining unit 1101 is not assigned with the trunk subscriber of transfer resource;

Transfer resource allocation units 1103, for the number of users upper limit that can carry according to the number of users carrying in current descending passback subframe and current descending passback subframe, be respectively each trunk subscriber allocation of transmission resources that is not assigned with transfer resource that excited users determining unit 1102 is determined;

Sub-frame information determining unit 1104, the descending passback subframe that is the transfer resource place of each trunk subscriber distribution for definite transfer resource allocation units 1103 is configured corresponding sub-frame information within a SPS cycle;

Schedule information transmitting element 1105, for the described sub-frame information that sub-frame information determining unit 1104 is determined, transfer resource allocation units 1103 are the resource information that each trunk subscriber distributes, the mixed automatic retransfer request HARQ process number information of distributing for each trunk subscriber and the identification information that is used to indicate scheduling type, send to by descending control signaling the RN that each trunk subscriber is corresponding, be used to indicate described RN and carry out data receiver, wherein, the initial transmission that the scheduling type that is used to indicate the identification information instruction of scheduling type is data, and described descending control signaling adopts semi-continuous scheduling identification information to identify.

As shown in figure 12, in the preferred implementation that the embodiment of the present invention three provides, the transfer resource allocation units 1103 that Figure 11 shown device comprises, can further include:

Judge module 1103A, the first distribution module 1103B and the second distribution module 1103C; Wherein, the first distribution module 1103B and the second distribution module 1103C also can only include one of them module.Particularly:

Judge module 1103A, for determining whether the number of users carrying in current descending passback subframe reaches the number of users upper limit that current descending passback subframe can be carried;

The first distribution module 1103B, when being no in definite result of judge module 1103A, distributes to the transfer resource in current descending passback subframe this and is not assigned with the trunk subscriber of transfer resource;

The second distribution module 1103C, in definite result of judge module 1103A when being, the transfer resource in the descending passback subframe arriving after the corresponding current descending passback subframe moment is distributed to this and is not assigned with the trunk subscriber of transfer resource.

In the preferred implementation that the embodiment of the present invention three provides, the second distribution module 1103C that Figure 12 shown device comprises, specifically for:

To after the corresponding current descending passback subframe moment, arrive at first and the number of users of carrying does not reach transfer resource in the descending passback subframe of the number of users upper limit that can carry and distribute to this and be not assigned with the trunk subscriber of transfer resource.

In the preferred implementation that the embodiment of the present invention three provides, the judge module 1103A that Figure 12 shown device comprises, also for:

According at least one information in the average state of activation Duration Information after the average channel quality information of current system bandwidth information, return link and multi-user's polymerization, determine the number of users upper limit that described descending passback subframe can be carried.

In the preferred implementation that the embodiment of the present invention three provides, the sub-frame information determining unit 1104 that Figure 11 shown device comprises, specifically for:

Be utilized as passback subframe numbers corresponding to the descending passback subframe at the transfer resource place that this trunk subscriber distributes divided by the descending passback sub-frame number configuring in the SPS cycle, the descending passback subframe that obtains the transfer resource place of distributing for this trunk subscriber is configured corresponding sub-frame information within a SPS cycle.

As shown in figure 13, in the preferred implementation that the embodiment of the present invention three provides, Figure 11 shown device can further include:

Data transmission unit 1106, be used at transfer resource allocation units 1103 for not respectively to be assigned with after the trunk subscriber allocation of transmission resources of transfer resource, on the transfer resource distributing for each trunk subscriber, transmit respectively the packet of each trunk subscriber, wherein, if the corresponding same descending passback subframe of the transfer resource that multiple trunk subscribers distribute, carries out the packet of described multiple trunk subscribers transmitting in the descending passback subframe of correspondence after polymerization processing.

In the preferred implementation that the embodiment of the present invention three provides, the schedule information transmitting element 1105 that Figure 13 shown device comprises, also for:

On the transfer resource distributing for each trunk subscriber, transmit after the packet of each trunk subscriber respectively at data transmission unit 1106, if determine and exist after the packet of error of transmission, the descending passback subframe at the transfer resource place of distributing for trunk subscriber corresponding to this packet is configured to corresponding sub-frame information, is the HARQ process number information of the trunk subscriber distribution that this packet is corresponding and the identification information that is used to indicate scheduling type within a SPS cycle, send to the corresponding RN of the corresponding trunk subscriber of described packet by descending control signaling; Wherein, the scheduling type that is used to indicate the identification information instruction of scheduling type is data re-transmission, and described descending control signaling adopts semi-continuous scheduling identification information to identify.

In practical application, the semi-continuous scheduling device on the above-mentioned return link that the embodiment of the present invention three provides can be included in base station.

Should be appreciated that the only logical partitioning for carrying out according to the function of this device realization of unit that the semi-continuous scheduling device on above return link comprises, in practical application, can carry out stack or the fractionation of said units.And the method for semi-persistently dispatching flow process on the return link that the function that the semi-continuous scheduling device on the return link that this embodiment tri-provides is realized provides with above-described embodiment one is corresponding one by one, the more detailed handling process realizing for this device, in above-described embodiment one, be described in detail, be not described in detail herein.

Embodiment tetra-

The embodiment of the present invention four provides a kind of data sink, and this device can be arranged in via node, can reduce the propagation delay time of trunk subscriber packet by this device.

As shown in figure 14, the data sink that the embodiment of the present invention four provides, mainly comprises:

Monitoring means 1401, the first schedule information acquiring unit 1402, schedule information storage unit 1403, the first data receiver unit 1404 and the first data storage cell 1405;

Wherein:

Monitoring means 1401, in the time that the corresponding moment of current descending passback subframe arrives, monitoring descending control signaling;

The first schedule information acquiring unit 1402, adopt semi-continuous scheduling identification information to identify for monitor described descending control signaling at monitoring means 1401, and the initial transmission that the indicated scheduling type of the identification information that is used to indicate scheduling type is data, obtain the resource information of distributing for accessing each trunk subscriber of this RN that described base station sends by described descending control signaling, the mixed automatic retransfer request HARQ process number information that the descending passback subframe at the transfer resource place of distributing for each trunk subscriber is configured corresponding sub-frame information and distributes for each trunk subscriber within a SPS cycle,

Schedule information storage unit 1403, the described resource information, HARQ process number information and the described sub-frame information that obtain for preserving schedule information acquiring unit 1402;

The first data receiver unit 1404, receives the packet of the trunk subscriber transmitting in current passback subframe for the resource information of obtaining according to schedule information acquiring unit 1403;

The first data storage cell 1405, buffer memory after identifying by corresponding sub-frame information and HARQ process number for the packet that the first data receiver unit 1404 is received.

As shown in figure 15, in the preferred implementation that the embodiment of the present invention four provides, Figure 14 shown device can further include:

The second schedule information acquiring unit 1406 and data re-transmission unit 1407;

Wherein:

The second schedule information acquiring unit 1406, adopt semi-continuous scheduling identification information to identify for monitor descending control signaling at monitoring means 1401, and when the indicated scheduling type of the identification information that is used to indicate scheduling type is data re-transmission, the HARQ process number information that the descending passback subframe at the transfer resource place of distributing for trunk subscriber corresponding to retransmission data packet may that obtains that described base station sends by described descending control signaling is configured corresponding sub-frame information, distributes for trunk subscriber corresponding to this retransmission data packet may within a SPS cycle;

Data re-transmission unit 1407, for sub-frame information and the described HARQ process number information obtained according to the second schedule information acquiring unit 1406, search the described sub-frame information stored in buffer memory with obtain and the packet of described HARQ process number information matches, and retransmit after to described processing data packets according to the re-transmission form indication information of setting.

As shown in figure 16, in the preferred implementation that the embodiment of the present invention four provides, Figure 14 shown device can further include:

The second data receiver unit 1408 and the second data storage cell 1409;

Wherein:

The second data receiver unit 1408, be used in the time that monitoring means 1401 does not detect that described descending control signaling adopts semi-continuous scheduling identification information to identify, the descending passback subframe at the resource information of distributing according to the each trunk subscriber of preserving and the transfer resource place distributed for each trunk subscriber is configured corresponding sub-frame information within a SPS cycle, and in the time determining that whether the corresponding moment of current descending passback subframe is predefine time of reception, be received in the packet transmitting in current descending passback subframe;

The second data storage cell 1409, this descending passback subframe for the transfer resource place of calculating HARQ process number that described packet that the second data receiver unit 1408 receives is corresponding and distribute for trunk subscriber corresponding to this packet is configured corresponding sub-frame information within a SPS cycle, and the described packet that described the second data receiver unit is received by the described HARQ process number that calculates and described sub-frame information mark after buffer memory.

In the preferred implementation that the embodiment of the present invention four provides, the second data storage cell 1409 that Figure 16 shown device comprises, specifically for:

In practical application, the above-mentioned data sink that the embodiment of the present invention four provides can be included in via node.

Should be appreciated that the only logical partitioning for carrying out according to the function of this device realization of unit that above data sink comprises, in practical application, can carry out stack or the fractionation of said units.And the data receive method flow process that the function that the data sink that this embodiment tetra-provides is realized provides with above-described embodiment two is corresponding one by one, the more detailed handling process realizing for this device, in above-described embodiment two, be described in detail, be not described in detail herein.

Embodiment five

The embodiment of the present invention five provides the system of the semi-continuous scheduling on a kind of return link, can reduce the propagation delay time of trunk subscriber packet by this system.

As shown in figure 17, the semi-continuous scheduling system on the return link that the embodiment of the present invention five provides, mainly comprises:

Base station 1701 and via node RN 1702;

Wherein:

Base station 1701, in the time that the corresponding moment of current descending passback subframe arrives, determine the corresponding moment of current descending passback subframe and on enter the trunk subscriber of state of activation and corresponding RN 1702 between a corresponding moment of descending passback subframe; Determine the trunk subscriber that is not assigned with transfer resource in described RN; The number of users upper limit that can carry according to the number of users carrying in current descending passback subframe and current descending passback subframe, is respectively the trunk subscriber allocation of transmission resources that is not respectively assigned with transfer resource; The descending passback subframe that is defined as the transfer resource place of each trunk subscriber distribution is configured corresponding sub-frame information within a SPS cycle; And the resource information of distributing by the described sub-frame information of determining, for each trunk subscriber, the mixed automatic retransfer request HARQ process number information of distributing for each trunk subscriber and the identification information that is used to indicate scheduling type, send to described RN by descending control signaling; Wherein, the initial transmission that the scheduling type that is used to indicate the identification information instruction of scheduling type is data, and described descending control signaling adopts semi-continuous scheduling identification information to identify;

RN 1702, in the time that the corresponding moment of current descending passback subframe arrives, monitoring descending control signaling; The initial transmission that the indicated scheduling type of identification information that described descending control signaling adopts semi-continuous scheduling identification information to identify and be used to indicate scheduling type if monitor is data, the HARQ process number information that the descending passback subframe at the resource information of distributing for each trunk subscriber of obtaining that described base station sends by described descending control signaling, the transfer resource place distributed for each trunk subscriber is configured corresponding sub-frame information and distributes for each trunk subscriber within a SPS cycle; Described resource information, HARQ process number information and described sub-frame information that preservation is obtained; And receive the packet of the trunk subscriber transmitting in current passback subframe according to described resource information, by the described packet receiving by corresponding sub-frame information and HARQ process number mark after buffer memory.

In semi-continuous scheduling device on the return link that the function that realize the base station 1701 that semi-continuous scheduling system on the return link that this embodiment five provides comprises and above-described embodiment three provide, describe in detail, be not described in detail herein; In the data sink that the function that the via node 1702 that semi-continuous scheduling system on the return link that this embodiment five provides comprises is realized and above-described embodiment four provide, describe in detail, be not described in detail herein.

For the technique effect of the outstanding embodiment of the present invention better, the present invention verifies by the method for Computer Simulation, and concrete certificate parameter arranges as follows:

Adopt system-level emulation mode, multi cell cellular network is carried out to modeling, network is made up of 19 cellular cells, and every community is divided into 3 sectors, and 4 Type I RN are placed in every sector.

System frame structure is with reference to tdd frame structure configuration 1, and detailed frame structure design sees attached list 1.

System emulation parameter is with reference to subordinate list 2.

As shown in figure 18, taking center, sector as the center of circle, 1/5 ISD is radius to the deployed position of RN, is evenly placed near on the circular arc of cell edge.

Except the scheme that the present invention proposes, for comparative analysis, other several comparatively approaching prior art schemes are also assessed, comprising: conventional unrepeatered, return link adopts traditional SPS scheme and dynamic dispatching scheme.

Emulation one:

Figure 19 has provided various scene Xia community VoIP capacity comparison.As can see from Figure 19, return link adopts the relay system under technical scheme provided by the invention to be compared to unrepeatered system, can obtain 45.8% VoIP capacity gain; Adopt the relay system under traditional SPS scheme and be compared to return link, can obtain 12.2% VoIP capacity gain; Be compared to return link and adopt the relay system under dynamic dispatching scheme, can obtain 7.4% VoIP capacity gain.

Therefore, from Figure 19, can obtain, return link adopts technical scheme provided by the invention, and relay system can obtain Gao community VoIP capacity.

Emulation two:

When Figure 20 has provided every sector 180 user, one under different scenes are jumped user's (being direct-connected user) and double bounce user's (being trunk subscriber) the ratio that is satisfied with.As can be seen from Figure 20, the jumping user of one in the relay system under technical scheme provided by the invention and double bounce user's satisfaction is all jumped user's satisfaction higher than one in unrepeatered system.Be compared to return link and adopt dynamic dispatching scheme, under technical scheme provided by the invention one jumping user is satisfied with ratio and gets a promotion, this is mainly the control signal resource overhead of having saved relaying return link due to technical scheme provided by the invention, and this part resource can be carried out scheduling of resource for a more jumping user.Be compared to return link and adopt traditional SPS scheme, the ratio that is satisfied with of double bounce user under technical scheme provided by the invention is obviously promoted, this is mainly to distribute one or more SPS process to carry double bounce user's packet because technical scheme provided by the invention can be RN according to the difference of double bounce user's quantity and business due in, thereby has reduced the wait time delay of double bounce user in eNB service queue.

Emulation three:

When Figure 21 has provided every sector 180 user, return link adopts respectively under traditional SPS scheme and technical scheme provided by the invention, double bounce user's VoIP Packet Delay CDF (CumulativeDistribution Function, cumulative distribution function) curve.Wherein, the curve from CDF axle close to is the curve that return link adopts technical scheme provided by the invention to generate, and the curve from CDF axle away from is the curve that return link adopts traditional SPS scheme to generate.

As can be seen from Figure 21, be compared to traditional SPS scheme, return link adopts technical scheme provided by the invention can obviously improve double bounce user's VoIP Packet Delay, finally makes system VoIP capacity get a promotion.

Subordinate list 1: system frame structure setting

Subordinate list 2: major parameter emulation

Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims

1. the method for semi-persistently dispatching on return link, is characterized in that, comprising:

The resource information of distributing by the described sub-frame information of determining, for each trunk subscriber, the mixed automatic retransfer request HARQ process number information of distributing for each trunk subscriber and the identification information that is used to indicate scheduling type, send to by descending control signaling the RN that each trunk subscriber is corresponding, be used to indicate described RN and carry out data receiver, wherein, the initial transmission that the scheduling type that is used to indicate the identification information instruction of scheduling type is data, and described descending control signaling adopts semi-continuous scheduling identification information to identify;

Wherein, the number of users upper limit that can carry according to the number of users carrying in current descending passback subframe and current descending passback subframe, be respectively the trunk subscriber allocation of transmission resources that is not respectively assigned with transfer resource, comprise: if the number of users carrying in current descending passback subframe does not reach the number of users upper limit that current descending passback subframe can be carried, the transfer resource in current descending passback subframe is distributed to this and be not assigned with the trunk subscriber of transfer resource; If the number of users carrying in current descending passback subframe reaches the number of users upper limit that current descending passback subframe can be carried, the transfer resource in the descending passback subframe arriving after the corresponding current descending passback subframe moment is distributed to this and is not assigned with the trunk subscriber of transfer resource;

The descending passback subframe that is defined as the transfer resource place of each trunk subscriber distribution is configured corresponding sub-frame information within a SPS cycle, comprise: be utilized as passback subframe numbers corresponding to the descending passback subframe at the transfer resource place that this trunk subscriber distributes divided by the descending passback sub-frame number configuring in the SPS cycle, the descending passback subframe that obtains the transfer resource place of distributing for this trunk subscriber is configured corresponding sub-frame information within a SPS cycle.

2. the method for claim 1, is characterized in that, the transfer resource in the descending passback subframe arriving is distributed to this and is not assigned with the trunk subscriber of transfer resource after the corresponding current descending passback subframe moment, comprising:

3. the method for claim 1, is characterized in that, definite mode of the number of users upper limit that descending passback subframe can be carried, comprising:

4. the method for claim 1, is characterized in that, is not respectively to be assigned with after the trunk subscriber allocation of transmission resources of transfer resource in base station, also comprises:

On the transfer resource distributing for each trunk subscriber, transmit respectively the packet of each trunk subscriber, wherein, if the corresponding same descending passback subframe of the transfer resource that multiple trunk subscribers distribute, carries out the packet of described multiple trunk subscribers transmitting in the descending passback subframe of correspondence after polymerization processing.

5. method as claimed in claim 4, is characterized in that, transmits after the packet of each trunk subscriber respectively on the transfer resource distributing for each trunk subscriber, also comprises:

Determine and exist after the packet of error of transmission in base station, the descending passback subframe at the transfer resource place of distributing for trunk subscriber corresponding to this packet is configured to corresponding sub-frame information, is the HARQ process number information of the trunk subscriber distribution that this packet is corresponding and the identification information that is used to indicate scheduling type within a SPS cycle, send to the corresponding RN of the corresponding trunk subscriber of described packet by descending control signaling; Wherein, the scheduling type that is used to indicate the identification information instruction of scheduling type is data re-transmission, and described descending control signaling adopts semi-continuous scheduling identification information to identify.

6. a data receive method, is characterized in that, comprising:

If RN monitors the initial transmission that the indicated scheduling type of identification information that described descending control signaling adopts semi-continuous scheduling identification information to identify and be used to indicate scheduling type is data, the mixed automatic retransfer request HARQ process number information that the descending passback subframe at the transfer resource place of obtain resource information that the each trunk subscriber for this RN of access that base station sends by described descending control signaling distributes, distributing for each trunk subscriber is configured corresponding sub-frame information and distributes for each trunk subscriber within a SPS cycle;

Receive the packet of the trunk subscriber transmitting in current passback subframe according to described resource information, buffer memory after the described packet receiving is identified by corresponding sub-frame information and HARQ process number;

Wherein, the descending passback subframe that is defined as in the following manner the transfer resource place that each trunk subscriber distributes is configured corresponding sub-frame information within a SPS cycle: be utilized as passback subframe numbers corresponding to the descending passback subframe at the transfer resource place that this trunk subscriber distributes divided by the descending passback sub-frame number configuring in the SPS cycle, the descending passback subframe that obtains the transfer resource place of distributing for this trunk subscriber is configured corresponding sub-frame information within a SPS cycle.

7. method as claimed in claim 6, is characterized in that, RN monitors described descending control signaling and adopts semi-continuous scheduling identification information to identify, and the indicated scheduling type of identification information that is used to indicate scheduling type is while being data re-transmission, also comprises:

The HARQ process number information that the descending passback subframe at the transfer resource place of distributing for trunk subscriber corresponding to retransmission data packet may that obtains that described base station sends by described descending control signaling is configured corresponding sub-frame information, distributes for trunk subscriber corresponding to this retransmission data packet may within a SPS cycle;

According to the described sub-frame information obtaining and described HARQ process number information, search the described sub-frame information stored in buffer memory with obtain and the packet of described HARQ process number information matches, and retransmit after to described processing data packets according to the re-transmission form indication information of setting.

8. method as claimed in claim 6, is characterized in that, if RN do not detect when described descending control signaling adopts semi-continuous scheduling identification information to identify, also comprise:

The descending passback subframe at the resource information of distributing according to the each trunk subscriber of preserving and the transfer resource place distributed for each trunk subscriber is configured corresponding sub-frame information within a SPS cycle, determines whether the corresponding moment of current descending passback subframe is the predefine time of reception;

If, be received in the packet transmitting in current descending passback subframe, and calculate HARQ process number corresponding to described packet that receive and this descending passback subframe at the transfer resource place distributed for trunk subscriber corresponding to this packet is configured corresponding sub-frame information within a SPS cycle;

The described packet receiving is identified to rear buffer memory by the described HARQ process number and the described sub-frame information that calculate.

9. the semi-continuous scheduling system on return link, is characterized in that, comprising:

Base station and via node RN; Wherein:

Described RN, in the time that the corresponding moment of current descending passback subframe arrives, monitoring descending control signaling; The initial transmission that the indicated scheduling type of identification information that described descending control signaling adopts semi-continuous scheduling identification information to identify and be used to indicate scheduling type if monitor is data, the HARQ process number information that the descending passback subframe at the resource information of distributing for each trunk subscriber of obtaining that described base station sends by described descending control signaling, the transfer resource place distributed for each trunk subscriber is configured corresponding sub-frame information and distributes for each trunk subscriber within a SPS cycle; Described resource information, HARQ process number information and described sub-frame information that preservation is obtained; And receive the packet of the trunk subscriber transmitting in current passback subframe according to described resource information, by the described packet receiving by corresponding sub-frame information and HARQ process number mark after buffer memory;

10. the semi-continuous scheduling device on return link, is characterized in that, comprising:

Sub-frame information determining unit, the descending passback subframe that is the transfer resource place of each trunk subscriber distribution for definite described transfer resource allocation units is configured corresponding sub-frame information within a SPS cycle; Wherein, the descending passback subframe that is defined as the transfer resource place of each trunk subscriber distribution is configured corresponding sub-frame information within a SPS cycle, comprise: be utilized as passback subframe numbers corresponding to the descending passback subframe at the transfer resource place that this trunk subscriber distributes divided by the descending passback sub-frame number configuring in the SPS cycle, the descending passback subframe that obtains the transfer resource place of distributing for this trunk subscriber is configured corresponding sub-frame information within a SPS cycle;

Schedule information transmitting element, for the described sub-frame information that described sub-frame information determining unit is determined, described transfer resource allocation units are the resource information that each trunk subscriber distributes, the mixed automatic retransfer request HARQ process number information of distributing for each trunk subscriber and the identification information that is used to indicate scheduling type, send to by descending control signaling the RN that each trunk subscriber is corresponding, be used to indicate described RN and carry out data receiver, wherein, the initial transmission that the scheduling type that is used to indicate the identification information instruction of scheduling type is data, and described descending control signaling adopts semi-continuous scheduling identification information to identify,

Wherein, described transfer resource allocation units, comprising:

Judge module, for determining whether the number of users carrying in current descending passback subframe reaches the number of users upper limit that current descending passback subframe can be carried;

The first distribution module, when being no in definite result of described judge module, distributes to the transfer resource in current descending passback subframe this and is not assigned with the trunk subscriber of transfer resource;

The second distribution module, in definite result of described judge module when being, the transfer resource in the descending passback subframe arriving after the corresponding current descending passback subframe moment is distributed to this and is not assigned with the trunk subscriber of transfer resource.

11. devices as claimed in claim 10, is characterized in that, described the second distribution module, specifically for:

12. devices as claimed in claim 10, is characterized in that, described judge module, also for:

13. devices as claimed in claim 10, is characterized in that, also comprise:

Data transmission unit, being used for is not respectively to be assigned with after the trunk subscriber allocation of transmission resources of transfer resource at described transfer resource allocation units, on the transfer resource distributing for each trunk subscriber, transmit respectively the packet of each trunk subscriber, wherein, if the corresponding same descending passback subframe of the transfer resource that multiple trunk subscribers distribute, carries out the packet of described multiple trunk subscribers transmitting in the descending passback subframe of correspondence after polymerization processing.

14. devices as claimed in claim 13, is characterized in that, described schedule information transmitting element, also for:

On the transfer resource distributing for each trunk subscriber, transmit after the packet of each trunk subscriber respectively at described data transmission unit, if determine and exist after the packet of error of transmission, the descending passback subframe at the transfer resource place of distributing for trunk subscriber corresponding to this packet is configured to corresponding sub-frame information, is the HARQ process number information of the trunk subscriber distribution that this packet is corresponding and the identification information that is used to indicate scheduling type within a SPS cycle, send to the corresponding RN of the corresponding trunk subscriber of described packet by descending control signaling; Wherein, the scheduling type that is used to indicate the identification information instruction of scheduling type is data re-transmission, and described descending control signaling adopts semi-continuous scheduling identification information to identify.

15. 1 kinds of base stations, is characterized in that, comprise that claim 10 is to the semi-continuous scheduling device on the return link described in claim 14 any one.

16. 1 kinds of data sinks, is characterized in that, comprising:

The first schedule information acquiring unit, adopt semi-continuous scheduling identification information to identify for monitor described descending control signaling at described monitoring means, and the initial transmission that the indicated scheduling type of the identification information that is used to indicate scheduling type is data, obtain the resource information of distributing for accessing each trunk subscriber of via node RN that base station sends by described descending control signaling, the mixed automatic retransfer request HARQ process number information that the descending passback subframe at the transfer resource place of distributing for each trunk subscriber is configured corresponding sub-frame information and distributes for each trunk subscriber within a SPS cycle,

The first data storage cell, buffer memory after identifying by corresponding sub-frame information and HARQ process number for the described packet that described the first data receiver unit is received;

17. devices as claimed in claim 16, is characterized in that, also comprise:

The second schedule information acquiring unit, adopt semi-continuous scheduling identification information to identify for monitor described descending control signaling at described monitoring means, and when the indicated scheduling type of the identification information that is used to indicate scheduling type is data re-transmission, the HARQ process number information that the descending passback subframe at the transfer resource place of distributing for trunk subscriber corresponding to retransmission data packet may that obtains that described base station sends by described descending control signaling is configured corresponding sub-frame information, distributes for trunk subscriber corresponding to this retransmission data packet may within a SPS cycle;

Data re-transmission unit, for described sub-frame information and the described HARQ process number information obtained according to described the second schedule information acquiring unit, search the described sub-frame information stored in buffer memory with obtain and the packet of described HARQ process number information matches, and retransmit after to described processing data packets according to the re-transmission form indication information of setting.

18. devices as claimed in claim 16, is characterized in that, also comprise:

The second data receiver unit, be used in the time that described monitoring means does not detect that described descending control signaling adopts semi-continuous scheduling identification information to identify, the descending passback subframe at the resource information of distributing according to the each trunk subscriber of preserving and the transfer resource place distributed for each trunk subscriber is configured corresponding sub-frame information within a SPS cycle, and in the time determining that whether the corresponding moment of current descending passback subframe is predefine time of reception, be received in the packet transmitting in current descending passback subframe;

The second data storage cell, this descending passback subframe for the transfer resource place of calculating HARQ process number corresponding to described packet that described the second data receiver unit receives and distribute for trunk subscriber corresponding to this packet is configured corresponding sub-frame information within a SPS cycle, and the described packet that described the second data receiver unit is received by the described HARQ process number that calculates and described sub-frame information mark after buffer memory.

19. 1 kinds of via nodes, is characterized in that, comprise that claim 16 is to the data sink described in claim 18 any one.