CN101990245B

CN101990245B - Transmission method, transmission device and receiving device for relay link

Info

Publication number: CN101990245B
Application number: CN200910090431.0A
Authority: CN
Inventors: 杨瑾; 梁枫; 毕峰; 袁明; 吴栓栓
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2009-08-04
Filing date: 2009-08-04
Publication date: 2014-08-13
Anticipated expiration: 2029-08-04
Also published as: CN101990245A; WO2011015095A1

Abstract

The invention discloses a transmission method for a relay link. The method comprises the following step of: after packaging a relay MAC (Medium Access Control) control element (R-MAC CE) to be transmitted between an evolved node B (eNB) and a relay node (RN) and an MAC service data unit (MAC SDU) attributed to all nodes in an effective load of the R-MAC protocol data unit (R-MAC PDU), transmitting the R-MAC PDU on a return link between the eNB and the RN. The invention also discloses a transmission device and a receiving device for the relay link. In the transmission device, a packaging unit is used for packaging the R-MAC CE to be transmitted between the eNB and the RN and the MAC SDU attributed to all the nodes in the effective load of the R-MAC PDU and transmitting the R-MAC PDU to a transmission unit. By adopting the method and the device of the invention, the transmission performance on the relay link can be improved.

Description

A kind of transmission method for repeated link, transmitting device and receiving system

Technical field

The present invention relates to moving communicating field, relate in particular to transmission method, transmitting device and receiving system for repeated link in the mobile communication system that one contains relay station (RN, Relay Node).

Background technology

At present, the demand for development of mobile communication supports that more high transfer rate, more perfect signal cover and higher resource utilization.In order to realize high transfer rate, communication system will adopt more high frequency band signal transmission, but on the other hand, high-frequency will be brought large path loss, and then affect the network coverage.In order effectively to improve the network coverage, to improve network capacity and resource utilization, relaying technique becomes the hot research direction of mobile communication system.

In the mobile communication system of introducing RN, user terminal (UE, User Equipment) there are two kinds of modes and an enhanced base station (eNB, evloved Node B) communication, a kind of is direct communication mode in traditional mobile network, another kind is to realize communicating by letter of UE and eNB by the relay services of RN, as shown in Figure 1.In Fig. 1, the link between eNB and RN is called back haul link, and the link between RN and its UE serving is called access link, and the UE that accepts to serve by RN under RN administration is called R-UE, and R-UE is RN subordinate's user terminal.

At Long Term Evolution (LTE, Long Term Evolution) the media access control (MAC of system, Medium Access Control) layer, data between eNB and UE are with MAC service data unit (SDU, Service Data Unit) be the control element (CE that unit is relevant with MAC layer, Control Element) together, be packaged into Medium Access Control (MAC) Protocol Data Unit (PDU, Protocol Data Unit), then MAC PDU is passed to lower floor and be further processed and send.

As shown in Figure 2, in Fig. 2, MAC PDU is divided into MAC PDU head and MAC PDU pay(useful) load two parts to the form of the MAC PDU of LTE system on the whole, and in a MAC PDU, head part, front, is accepted thereafter effective loading section.In MAC PDU head, comprise multiple MAC PDU heads, pay(useful) load part comprises some MAC SDU and MAC CE, also may comprise the byte of padding of introducing according to the length legislations of MAC PDU, and wherein MAC CE is front, MAC SDU afterwards, and possible byte of padding.Each MAC PDU head is MAC SDU, a MACCE in corresponding pay(useful) load or byte of padding respectively, the relevant information of indicating corresponding MAC SDU or MAC CE, or instruction byte of padding.Each MAC PDU head putting in order in MAC PDU head is corresponding one by one with putting in order of MACCE, MAC SDU and byte of padding in pay(useful) load.

MAC PDU head is divided into two classes, is divided into for a son form of MAC SDU with for the son form of MAC CE or byte of padding.Wherein, be used for a son form of MAC SDU as shown in Figure 3 and Figure 4, Fig. 3 and Fig. 4 are respectively the structural representation of sub corresponding to MAC SDU in the MAC PDU transmitting between existing eNB and UE, the form of a son form taking 1 byte as a line represents, represent byte with the Oct in scheming, the Oct of other figure is also the implication here herein, below does not repeat; And the L region in Fig. 3 is 7 bits (bit), the L region in Fig. 4 is 15bit.Be used for a son form of MAC CE or byte of padding as shown in Figure 5, Fig. 5 is the structural representation of sub corresponding to MAC CE or byte of padding in the MAC PDU transmitting between existing eNB and UE.

As shown in Figure 3 and Figure 4,2 bytes or 3 bytes can be taken for the son head of MAC SDU as seen, as shown in Figure 5,1 byte can be taken for the son head of MAC CE or byte of padding.Below each indication information related in Fig. 3, Fig. 4 and Fig. 5 is set forth, the implication of each indication information is as follows:

R-1bit is to retain position, without instruction implication;

E-1bit, being used to indicate this son head is next another MAC PDU head afterwards, or the beginning of pay(useful) load;

LCID-5bit, the association attributes of indicating this son corresponding MAC SDU or MAC CE, or instruction byte of padding;

F-1bit, being used to indicate L zone length is 7bit or 15bit;

L-7bit or 15bit, be used to indicate the message length of corresponding MAC SDU.

It may be noted that and be: the son head for MAC SDU represents with each indication information that sub-header structure was comprised, and can be expressed as the sub-head of R/R/E/LCID/F/L; Son head for MAC CE or byte of padding represents with each indication information that sub-header structure was comprised, and can be expressed as the sub-head of R/R/E/LCID.Because the length of MAC CE information is fixed, therefore in the corresponding son head of MAC CE, do not need the L region of indicating length, further do not need to indicate the F indicating bit of L zone length yet.

The form of above-mentioned MAC PDU encapsulates in the processing of MAC layer for the MAC SDU between eNB and UE and MAC CE in LTE system, the MAC SDU of each UE and MAC CE are packaged into MAC PDU by eNB, pass to after lower floor further processes and send to UE, MAC SDU and MAC CE that same UE is also transferred to preparation eNB are packaged into MAC PDU, pass to after lower floor further processes and send to eNB.

In relay system, MAC SDU between RN and R-UE on access link and the transmission of MAC CE can follow the MAC PDU form adopting between above-mentioned existing eNB and UE, but on the back haul link between eNB and RN, the existing MAC PDU of LTE form can not adapt to the requirement of MAC SDU and MAC CE transmission between eNB and RN completely, reason is: original MAC PDU encapsulates MAC SDU and the MAC CE of same UE on the one hand, and all information that comprise in a MAC PDU all belong to same UE; Transmission on back haul link may comprise R-MAC SDU and the R-MAC CE between U-MAC SDU, RN and the eNB of multiple R-UE, if adopt above-mentioned existing MAC PDU form, can there is the problem of the information that cannot comprise simultaneously and distinguish instruction RN and multiple R-UE.On the other hand, if on back haul link by the R-MAC SDU between the U-MAC SDU of the multiple UE of RN subordinate and RN and eNB and R-MAC CE, if carry out respectively individual packages transmission by the form of above-mentioned existing MAC PDU, the problem that can exist the resource of back haul link not to be effectively utilized, simultaneously can not carry out efficient scheduling transmission according to each UE's or RN's demand.In a word, on the back haul link of relay system, existing this problem aspect two, all can have influence on the transmission performance on repeated link.At present, for above this two aspects problem, solution effectively is not yet proposed, to improve the transmission performance on repeated link.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of transmission method for repeated link, transmitting device and receiving system, can improve the transmission performance on repeated link.

For achieving the above object, technical scheme of the present invention is achieved in that

A kind of transmission method for repeated link, the method comprises: in the pay(useful) load of relay media access control protocol data cell (R-MAC PDU), to relaying MAC control element waiting for transmission (R-MAC CE) between enhanced base station (eNB) and relay station (RN) be under the jurisdiction of after MAC service data unit (MAC SDU) encapsulation of each node, on the back haul link between described eNB and described RN, transmit R-MAC PDU;

Wherein, the each node under the MAC SDU encapsulating in to described pay(useful) load by the node indication information that encapsulates in R-MAC PDU head is indicated respectively, and described node comprises RN and RN subordinate's user terminal (R-UE).

Wherein, described R-MAC CE is the MAC control element relevant to RN;

Described MAC SDU belongs to RN or R-UE; The MAC SDU that belongs to RN is specially R-MACSDU, and the MAC SDU that belongs to R-UE is specially U-MAC SDU.

Wherein, the node identification (Node ID) of node under the each MAC SDU of the concrete instruction of described node indication information.

Wherein, in R-MAC PDU pay(useful) load, be at least packaged with: k R-MAC CE; M R-MAC SDU; N U-MAC SDU, wherein, m >=0, k, n >=1.

Wherein, be further also packaged with byte of padding in R-MAC PDU pay(useful) load, byte of padding is positioned at the last of pay(useful) load part.

Wherein, described node indication information is specially: R-MAC PDU head comprises the sub-head of instruction MAC SDU; A MAC SDU of a corresponding instruction of MAC SDU head, the Node ID that comprises the affiliated node of indicated MAC SDU in MAC SDU head;

In described R-MAC PDU head, also comprise: the son head of instruction R-MAC CE and optionally indicate the sub-head of byte of padding; A R-MAC CE of a corresponding instruction of R-MAC CE head.

Wherein, the form of MAC SDU head is specially: R/R/E/LCID/F/L/Node ID; The form of the son head of R-MAC CE or the son head of byte of padding is specially: R/R/E/LCID; Wherein,

When the corresponding instruction of current MAC SDU head R-MAC SDU, in current MAC SDU head, Node ID specifically indicates RN ID;

When the corresponding instruction of current MAC SDU head U-MAC SDU, in current MAC SDU head, Node ID specifically indicates the R-UE ID of the affiliated R-UE of MAC SDU.

Wherein, described node indication information is specially: R-MAC PDU head comprises the sub-head of S; The instruction of a S head belongs to the corresponding one or more sub-heads of one or more MAC SDU of same node point;

In described R-MAC PDU head, also comprise: the son head of instruction R-MAC CE, the son head of instruction MAC SDU and optionally indicate the sub-head of byte of padding; A MAC SDU of a corresponding instruction of MAC SDU head, a R-MAC CE of a corresponding instruction of R-MAC CE head.

Wherein, the sub-head of described S, further indicates a son quantity of the one or more MAC SDU that belong to same node point and corresponding Node ID to unify instruction to the correspondence comprising in described R-MAC PDU head.

Wherein, according to the instruction of the encapsulation order of the one or more S head comprising in described R-MAC PDU head and each S head, determine the Node ID of node under the corresponding MAC of the instruction SDU of son head institute of the one or more instruction MAC SDU that comprise in described head; Wherein, order is adjacent successively to belong to the corresponding son head of the MAC SDU of same node point; Between MAC SDU head corresponding to different nodes, encapsulation order is corresponding one by one with corresponding S head order.

Wherein, in described pay(useful) load, the encapsulation of included content order is corresponding one by one with the corresponding encapsulation order of sub; Wherein,

In described pay(useful) load, the encapsulation of included content order is followed successively by: one or more R-MAC CE are front; One or more MAC SDU subsequently; It is finally optional byte of padding;

The encapsulation order of described son head is followed successively by: one or more son heads of corresponding instruction R-MAC CE are front; The sub-heads of one or more S subsequently; Next be the one or more sub-head that encapsulates successively corresponding instruction MACSDU according to the order of S head; It is finally the sub-head of optional corresponding instruction byte of padding.

Wherein, the form of S head is specially R/R/E/SDU No./Node ID; The form of the son head of MAC SDU is specially: R/R/E/LCID/F/L; The form of R-MAC CE head or byte of padding head is specially: R/R/E/LCID; Wherein,

In current R-MAC CE head, E indicating bit is specifically indicated: after current R-MAC CE head, be next another R-MAC CE head or the sub-head of S;

In current S head, E indicating bit is specifically indicated: after current S head, be next another S head or MAC SDU head;

In the current son head of other type outside R-MAC CE head and S head, E indicating bit is specifically indicated: after current son head, be next another height head, or the beginning of pay(useful) load.

Wherein, in described current S head, SDU No. specifically indicates: the quantity that belongs to the MAC SDU head of current S institute's corresponding node.

Wherein, when a described current S corresponding instructs node is RN, in current S head, Node ID specifically indicates RN ID;

When a described current S corresponding instructs node is R-UE, in current S head, Node ID specifically indicates R-UE ID.

Wherein, described node indication information is specially: the sub-head that comprises instruction MAC SDU in R-MAC PDU head; A MAC SDU of a corresponding instruction of MAC SDU head, adopts D indicating bit in MAC SDU head, indicates a current son corresponding MAC SDU and the corresponding MAC SDU of last height head whether to belong to same node;

Wherein, the form of MAC SDU head is specially: R/D/E/LCID/F/L or R/D/E/LCID/F/L/Node ID; The form of R-MAC CE head or byte of padding head is specially: R/R/E/LCID; Wherein,

In the son head of current MAC SDU, indicate the MAC SDU of the corresponding instruction of son head institute of current MAC SDU when D indicating bit and do not belong to same node with the MAC SDU of the corresponding instruction of last height head, the form of current MAC SDU employing is specially R/D/E/LCID/F/L/Node ID;

In the son head of current MAC SDU, when the MAC SDU of the corresponding instruction of son head institute of the current MAC SDU of the concrete instruction of D indicating bit belongs to same node with the MAC SDU of the corresponding instruction of last height head, the form of current MAC SDU employing is specially R/D/E/LCID/F/L.

Wherein, MAC SDU the form adopting is specially R/D/E/LCID/F/L/Node ID, and when the son head correspondence of current MAC SDU is indicated R-MAC SDU, Node ID specifically indicates RN ID;

When the son head correspondence of current MAC SDU is indicated U-MAC SDU, Node ID specifically indicates R-UEID.

Wherein, in described R-MAC PDU head, one or more MACSDU heads that corresponding instruction belongs to same node are sequentially adjacent successively;

Wherein, corresponding instruction belongs in one or more MAC SDU heads of same node, in first MAC SDU head, comprises node identification information, instruction Node ID; What order was adjacent thereafter belongs in the MAC SDU head of same node, does not need again to indicate Node ID.

Wherein, in R-MAC PDU pay(useful) load, the encapsulation of included content order is corresponding one by one with the encapsulation order of corresponding son head; Wherein,

The encapsulation order of described son head is followed successively by: one or more son heads of corresponding instruction R-MAC CE are front; The one or more sub-head of corresponding instruction MAC SDU subsequently; It is finally the sub-head of optional corresponding instruction byte of padding.

Wherein, described R-UE ID specifically comprises: the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) of R-UE and the identification information of other R-UE of unique identification between eNB and RN.

For a transmitting device for repeated link, this device comprises: indication information generation unit, encapsulation unit and transmission unit; Wherein,

Indication information generation unit, for generating the node indication information of node under the MAC SDU that pay(useful) load is encapsulated, and passes to encapsulation unit and is encapsulated in R-MAC PDU head;

Encapsulation unit, in R-MAC PDU pay(useful) load, encapsulates R-MAC CE waiting for transmission between eNB and RN and the MAC SDU that is under the jurisdiction of each node; In R-MAC PDU head, encapsulate node indication information; And R-MAC PDU is passed to described transmission unit;

Transmission unit, for transmitting described R-MACPDU on the back haul link between described eNB and described RN.

Wherein, described encapsulation unit, is further used for being at least packaged with in R-MAC PDU pay(useful) load: k R-MAC CE; M R-MAC SDU; N U-MAC SDU, wherein, m >=0, k, n >=1.

Wherein, described encapsulation unit, is further used for being further also packaged with byte of padding in R-MAC PDU pay(useful) load, and byte of padding is positioned at the last of pay(useful) load part.

Wherein, described indication information generation unit, is further used for the Node ID that comprises respective nodes in the son head of described instruction MAC SDU, as described node indication information.

Wherein, described indication information generation unit, the form that is further used for the MAC SDU head adopting is specially: R/R/E/LCID/F/L/Node ID; Wherein,

When the corresponding instruction of current MAC SDU head R-MAC SDU, in the son head of current MAC SDU, Node ID specifically indicates RN ID;

When the corresponding instruction of current MAC SDU head U-MAC SDU, in the son head of current MAC SDU, Node ID specifically indicates R-UE ID.

Wherein, described indication information generation unit, is further used for adopting the sub-head of S in R-MAC PDU head, as described node indication information;

Wherein, the instruction of a S head belongs to one or more MAC SDU heads of same node point.

Wherein, described indication information generation unit, is further used for being specially R/R/E/SDU No./Node ID as the form of the S head of node indication information;

Wherein, E indicating bit is specifically indicated: after current S head, be next another S head or sub-head of MAC SDU;

SDU No. specifically indicates: the quantity that belongs to the MAC SDU head of current S institute's corresponding node;

Node ID specifically indicates: the node identification information of respective nodes; In the time that respective nodes is RN, NodeID is RN ID, and in the time that respective nodes is R-UE, Node ID is R-UE ID.

Wherein, described indication information generation unit, is further used for comprising D indicating bit or D indicating bit and Node ID in the son head of described MAC SDU, as described node indication information.

Wherein, described indication information generation unit, the form that is further used for the MAC SDU head that comprises node indication information is specially: R/D/E/LCID/F/L or R/D/E/LCID/F/L/Node ID; Wherein,

In the son head of current MAC SDU, when the MAC SDU that indicates current MAC SDU head institute correspondence to indicate when D indicating bit does not belong to same node with the MAC SDU of the corresponding instruction of last height head, the form of employing is specially R/D/E/LCID/F/L/Node ID; Wherein,

Node ID specifically indicates: the node identification information of respective nodes; In the time that respective nodes is RN, NodeID is RN ID, and in the time that respective nodes is R-UE, Node ID is R-UE ID;

In the son head of current MAC SDU, when the MAC SDU that indicates current MAC SDU head institute correspondence to indicate when D indicating bit belongs to same node with the MAC SDU of the corresponding instruction of last height head, the form of employing is specially R/D/E/LCID/F/L.

For a receiving system for repeated link, this device comprises: indication information resolution unit, decapsulation unit; Wherein,

Indication information resolution unit, resolves for the node indication information that R-MAC PDU head is encapsulated, and analysis result is passed to decapsulation unit; Wherein, described node indication information is the node indication information of node under the MAC SDU to encapsulating in R-MAC PDU pay(useful) load;

Decapsulation unit, be used for according to described analysis result, in R-MAC PDU pay(useful) load, R-MAC CE waiting for transmission between eNB and RN and the MAC SDU that is under the jurisdiction of each node are carried out to decapsulation, obtain R-MAC CE and the MAC SDU that belongs to each node in described pay(useful) load.

Wherein, described decapsulation unit, is further used for parsing packaged information in R-MAC PDU pay(useful) load, at least comprises: k R-MAC CE; M R-MAC SDU; N U-MAC SDU, wherein, m >=0, k, n >=1.

Wherein, described decapsulation unit, is further used for also parsing byte of padding in R-MAC PDU pay(useful) load; Described byte of padding is positioned at the last of pay(useful) load part.

Wherein, described indication information resolution unit, is further used for parsing node indication information for the Node ID of the respective nodes comprising in the son head of described instruction MAC SDU.

Wherein, the form of MAC SDU head is specially: R/R/E/LCID/F/L/Node ID;

Described indication information resolution unit, is further used for resolving current MAC SDU head, obtains the Node ID of node under corresponding MAC SDU from described MAC SDU head; And pass to described decapsulation unit by resolving the Node ID obtaining.

Wherein, described indication information resolution unit, is further used for parsing node indication information for the sub-head of S comprising in R-MAC PDU head; Wherein, the instruction of a S head belongs to one or more MAC SDU heads of same node point.

Wherein, the form of S head is specially R/R/E/SDU No./Node ID;

Described indication information resolution unit, is further used for parsing E indicating bit and specifically indicates: after current S head, be next another S head or MAC SDU head;

Described indication information resolution unit, is further used for parsing SDU No. and specifically indicates: the quantity that belongs to the MAC SDU head of current S institute's corresponding node;

Described indication information resolution unit, is further used for parsing Node ID and specifically indicates: respective nodes is RN, and Node ID is RN ID; Or described indication information resolution unit, is further used for NodeID and specifically indicates: respective nodes is R-UE, Node ID is R-UE ID.

Wherein, described indication information resolution unit, is further used for parsing node indication information for the D indicating bit or D indicating bit and the Node ID that comprise in the son head of described MAC SDU.

Wherein, described indication information resolution unit, is further used for parsing the instruction of D indicating bit: the MAC SDU that current MAC SDU head institute correspondence is indicated does not belong to same node with the MAC SDU of the corresponding instruction of last height head; The form of current MAC SDU head is specially: R/D/E/LCID/F/L/Node ID;

Described indication information resolution unit, is further used for parsing the instruction of D indicating bit: the MAC SDU that current MAC SDU head institute correspondence is indicated belongs to same node with the MAC SDU of the corresponding instruction of last height head; The form of current MAC SDU head is specially: R/D/E/LCID/F/L.

The form of the MAC SDU head that wherein, comprises node indication information is specially: in the situation of R/D/E/LCID/F/L/Node ID, described indication information resolution unit, is further used for parsing Node ID and specifically indicates: the RN ID of respective nodes; Or described indication information resolution unit, is further used for parsing Node ID and specifically indicates: R-UE ID.

The present invention, in the R-MAC of relay media access control PDU pay(useful) load, after R-MAC CE waiting for transmission between eNB and RN and the MAC SDU that is under the jurisdiction of each node are encapsulated, is transmitted R-MAC PDU on the back haul link between eNB and RN.Wherein, indicate respectively by the each node encapsulating in R-MAC PDU head under the MAC SDU that node indication information encapsulates in to pay(useful) load.

Utilization of the present invention is applicable to the new MAC PDU form of back haul link, and R-MAC PDU form is for the R-MAC SDU of U-MAC SDU, RN and the processing of the R-MAC CE encapsulation of one or more R-UE between eNB and RN.Here, R-MAC PDU can be called relay media access control protocol data cell.Can in a R-MAC PDU, comprise as required the U-MACSDU of multiple R-UE and the R-MAC CE of RN and R-MAC SDU simultaneously.After adopting this R-MAC PDU form encapsulation of data and control information, transmit, can solve above two aspect problems, on the one hand: the MAC SDU that can comprise simultaneously and distinguish instruction RN and multiple R-UE in a R-MACPDU; On the other hand: just because of R-MACSDU and the R-MAC CE of the U-MAC SDU, the RN that have comprised multiple R-UE in a R-MAC PDU, therefore, can improve the resource utilization of back haul link, more effectively meet R-UE and the RN demand to the aspect such as data delay, data volume, the effects such as the fairness of raising system resource scheduling.Thereby, finally make the transmission performance on repeated link well be improved.

Brief description of the drawings

Fig. 1 is the structural representation of junction network;

Fig. 2 is the MAC PDU structural representation of existing LTE system;

Fig. 3 is a structural representation of the son head of existing MAC SDU;

Fig. 4 is another structural representation of the son head of existing MAC SDU;

Fig. 5 is a structural representation of the son head of existing MAC CE or byte of padding;

Fig. 6 is the realization flow schematic diagram of the inventive method;

Fig. 7 is the present invention program one R-MAC PDU structural representation;

Fig. 8 is a structural representation of the son head of the present invention program one MAC SDU;

Fig. 9 is another structural representation of the son head of the present invention program one MAC SDU;

Figure 10 is the another structural representation of the son head of the present invention program one MAC SDU;

Figure 11 is a structural representation again of the son head of the present invention program one MAC SDU;

Figure 12 is the present invention program two R-MAC PDU structural representation;

Figure 13 is a structural representation of the present invention program two S head;

Figure 14 is another structural representation of the present invention program two S head;

Figure 15 is the present invention program three R-MAC PDU structural representation;

Figure 16 is a structural representation of the son head of the present invention program three MAC SDU;

Figure 17 is another structural representation of the son head of the present invention program three MAC SDU;

Figure 18 is the another structural representation of the son head of the present invention program three MAC SDU;

Figure 19 is a structural representation again of the son head of the present invention program three MAC SDU;

Figure 20 is a structural representation that does not comprise Node ID region in the present invention program three the son head of MAC SDU;

Figure 21 is another structural representation that does not comprise Node ID region in the present invention program three the son head of MAC SDU;

Figure 22 is the structural representation of R-MAC PDU in example 1;

Figure 23 is the structural representation of R-MAC PDU in example 2;

Figure 24 is the structural representation of R-MAC PDU in example 3;

Figure 25 is the structural representation of R-MAC PDU in example 4;

Figure 26 is the structural representation of R-MAC PDU in example 5;

Figure 27 is the structural representation of R-MAC PDU in example 6;

Figure 28 is a composition structural representation of apparatus of the present invention;

Figure 29 is another composition structural representation of apparatus of the present invention.

Embodiment

Basic thought of the present invention is: in the pay(useful) load of R-MAC PDU, after R-MAC CE waiting for transmission between eNB and RN and the MAC SDU that is under the jurisdiction of each node are encapsulated, transmit R-MAC PDU on the back haul link between eNB and RN.Wherein, indicate respectively by the each node encapsulating in R-MAC PDU head under the MAC SDU that node indication information encapsulates in to pay(useful) load.

Below in conjunction with accompanying drawing, the enforcement of technical scheme is described in further detail.

As shown in Figure 6, a kind of transmission method for repeated link, the method comprises:

Step 101, employing R-MAC PDU encapsulate the MAC SDU and the R-MACCE that transmit between eNB and RN.

Wherein, R-MAC CE is encapsulated in the pay(useful) load of R-MAC PDU with the MAC SDU that is under the jurisdiction of each node.Each node under the MAC SDU encapsulating in to pay(useful) load by the node indication information that encapsulates in R-MAC PDU head is indicated respectively.The node here comprises: RN and R-UE.

After step 102, encapsulation, on the back haul link between eNB and RN, transmit R-MAC PDU.

For the technical scheme being made up of step 101～step 102, R-MAC CE is the MAC control element relevant to RN.MAC SDU belongs to RN or R-UE; The MAC SDU that belongs to RN is specially R-MAC SDU, and the MAC SDU that belongs to R-UE is specially U-MAC SDU.

Here the node identification (NodeID) of node under the each MAC SDU of the concrete instruction of node indication information.Wherein, in the time that MAC SDU belongs to RN, node indication information is specifically indicated: the RN ID of RN under MAC SDU, and Node ID is now RN ID; In the time that MAC SDU belongs to R-UE, node indication information is specifically indicated: the R-UE ID of R-UE under MAC SDU, Node ID is now R-UE ID.

Here in R-MAC PDU pay(useful) load, be at least packaged with: k R-MAC CE; M R-MAC SDU; N U-MAC SDU, wherein, m >=0, k, n >=1.

Here, be further also packaged with byte of padding in R-MAC PDU pay(useful) load, byte of padding is positioned at the last of pay(useful) load part.

Below three of node indication information kinds of different concrete conditions are set forth respectively.

The first situation: node indication information is specially: R-MAC PDU head comprises the sub-head of instruction MAC SDU; A MAC SDU of a corresponding instruction of MAC SDU head, the Node ID that comprises the affiliated node of indicated MAC SDU in MAC SDU head.

In R-MAC PDU head, also comprise: the son head of instruction R-MAC CE and optionally indicate the sub-head of byte of padding; A R-MAC CE of a corresponding instruction of R-MAC CE head.

Here, the form of MAC SDU head is specially: R/R/E/LCID/F/L/Node ID; The form of the son head of R-MAC CE or byte of padding head is specially: R/R/E/LCID.Wherein, when the corresponding instruction of current MAC SDU head R-MAC SDU, in current MAC SDU head, Node ID specifically indicates RN ID; When the corresponding instruction of current MAC SDU head U-MAC SDU, in current MAC SDU head, NodeID specifically indicates the R-UE ID of the affiliated R-UE of MAC SDU.

Here, R-UE ID specifically comprises: the mark of the C-RNTI of R-UE or other unique identification R-UE between eNB and RN.

It is to be noted: the son head in R-MAC PDU has multiple.The type of son head comprises: the sub-head type of the sub-head type of R-MAC CE, the sub-head type of MAC SDU and optional byte of padding.In pay(useful) load, the encapsulation of included content order is corresponding one by one with the corresponding encapsulation order of sub.

Wherein, in pay(useful) load, the encapsulation of included content order is followed successively by: one or more R-MAC CE are front; One or more MAC SDU subsequently; It is finally optional byte of padding; Correspondingly, the encapsulation order of son head is followed successively by: one or more son heads of corresponding instruction R-MAC CE are front; The one or more sub-head of corresponding instruction MAC SDU subsequently; It is finally the sub-head of optional corresponding instruction byte of padding.

The second situation: node indication information is specially: R-MAC PDU head comprises the sub-head of S; The instruction of a S head belongs to the corresponding one or more sub-heads of one or more MAC SDU of same node point.

Now, in R-MAC PDU head, also comprise: the son head of instruction R-MAC CE, the son head of instruction MAC SDU and optionally indicate the sub-head of byte of padding; A MAC SDU of a corresponding instruction of MAC SDU head, a R-MAC CE of a corresponding instruction of R-MAC CE head.

Here, the sub-head of S, further indicates a son quantity of the one or more MAC SDU that belong to same node point and corresponding Node ID to unify instruction to the correspondence comprising in described R-MAC PDU head.

Here according to the instruction of the encapsulation order of the one or more S head comprising in described R-MAC PDU head and each S head, determine the Node ID of node under the corresponding MAC of the instruction SDU of son head institute of the one or more instruction MAC SDU that comprise in described head; Wherein, order is adjacent successively to belong to the corresponding son head of the MAC SDU of same node point; Between MAC SDU head corresponding to different nodes, encapsulation order is corresponding one by one with corresponding S head order.

Here, in pay(useful) load, the encapsulation of included content order is corresponding one by one with the corresponding encapsulation order of sub.Wherein, in pay(useful) load, the encapsulation of included content order is followed successively by: one or more R-MAC CE are front; One or more MAC SDU subsequently; It is finally optional byte of padding.

The encapsulation order of son head is followed successively by: one or more son heads of corresponding instruction R-MAC CE are front; The sub-heads of one or more S subsequently; Next be the one or more sub-head that encapsulates successively corresponding instruction MACSDU according to the order of S head; It is finally the sub-head of optional corresponding instruction byte of padding.

Here, the form of S head is specially R/R/E/SDU No./Node ID; The form of MAC SDU head is specially: R/R/E/LCID/F/L; The form of R-MAC CE head or byte of padding head is specially: R/R/E/LCID.

Wherein, in current R-MAC CE head, E indicating bit is specifically indicated: after current R-MAC CE head, be next another R-MAC CE head or the sub-head of S.In current S head, E indicating bit is specifically indicated: after current S head, be next another S head or MAC SDU head.In the current son head of other type outside R-MAC CE head and S head, E indicating bit is specifically indicated: after current son head, be next another height head, or the beginning of pay(useful) load.

Here, in current S head, SDU No. specifically indicates: the quantity that belongs to the MAC SDU head of a current S corresponding node.

Here,, when the corresponding instruction of current S head RN, Node ID specifically indicates RN ID; When corresponding instruction R-UE, No de ID specifically indicates R-UE ID.

Here, R-UE ID specifically comprises: the mark of C-RNTI or other unique identification R-UE between eNB and RN.

The third situation: node indication information is specially: the sub-head that comprises instruction MAC SDU in R-MAC PDU head; A MAC SDU of a corresponding instruction of MAC SDU head, adopts D indicating bit in MAC SDU head, indicates a current son corresponding MAC SDU and the corresponding MAC SDU of last height head whether to belong to same node.

Here, the form of MAC SDU head is specially: R/D/E/LCID/F/L or R/D/E/LCID/F/L/Node ID; The form of R-MAC CE head or byte of padding head is specially: R/R/R/LCID.Wherein,

Here, MAC SDU the form adopting is specially R/D/E/LCID/F/L/Node ID, and when the son head correspondence of current MAC SDU is indicated R-MAC SDU, Node ID specifically indicates RN ID; When the son head correspondence of current MAC SDU is indicated U-MAC SDU, Node ID specifically indicates R-UE ID.

Here,, in R-MAC PDU head, one or more MAC SDU heads that corresponding instruction belongs to same node are sequentially adjacent successively.Wherein, corresponding instruction belongs in one or more MAC SDU heads of same node, in first MAC SDU head, comprises node identification information, instruction Node ID; What order was adjacent thereafter belongs in the MAC SDU head of same node, does not need again to indicate Node ID.

Here, R-UE ID specifically comprises: the identification information of C-RNTI or other unique identification R-UE between eNB and RN.

In sum, content of the present invention mainly comprises following three kinds of specific implementations, is applicable to form and the system of the R-MAC PDU of back haul link, reaches and effectively meets R-UE demand, improves the effect of back haul link resource utilization.Below concrete elaboration respectively.

Scheme one:

As shown in Figure 7, R-MAC PDU is made up of R-MAC PDU head and R-MAC PDU pay(useful) load two parts, and in a R-MAC PDU, head part, front, is accepted thereafter effective loading section.In R-MACPDU head, comprise multiple sub-heads, pay(useful) load part comprises one or more MAC SDU, can be the U-MAC SDU that belongs to certain R-UE, also can be the R-MAC SDU that belongs to RN, and one or more R-MAC CE, also may comprise the filling of certain byte of padding of introducing according to the length legislations of R-MAC PDU.In pay(useful) load, R-MAC CE, front, is one or more MAC SDU afterwards, and possible byte of padding.A MACSDU, R-MAC CE or byte of padding in the corresponding pay(useful) load of each R-MAC PDU head difference, the relevant information of indicating corresponding MAC SDU or R-MAC CE, or the byte of padding of instruction filling.Each R-MAC PDU head putting in order in R-MAC PDU head is corresponding one by one with putting in order of R-MAC CE in pay(useful) load and MAC SDU and possible byte of padding.

R-MAC PDU head has two kinds, is divided into a son form that is used to indicate MAC SDU and a son form that is used to indicate R-MAC CE or byte of padding.

Wherein, the son head that is used to indicate MAC SDU can take 3-5 byte, structure is R/R/E/LCID/F/L/Node ID, as shown in Fig. 8,9,10,11, wherein, Fig. 8 be in the present invention program one R-MAC PDU corresponding to a kind of structural representation of MAC SDU head, Node ID region wherein takies 16bit, L region takies 7bit; Fig. 9 is the another kind of structural representation corresponding to the son head of MAC SDU in the present invention program one R-MAC PDU, and Node ID region wherein takies 16bit, and L region takies 15bit; Figure 10 is another structural representation corresponding to the son head of MAC SDU in the present invention program one R-MAC PDU, and Node ID region wherein takies 8bit, and L region takies 7bit; Figure 11 is another structural representation corresponding to the son head of MAC SDU in the present invention program one R-MAC PDU, and Node ID region wherein takies 8bit, and L region takies 15bit.

Be used to indicate the son head that belongs to R-MAC CE or byte of padding and take 1 byte, structure is R/R/E/LCID, with the structure of existing MAC CE is identical as shown in Figure 5.

In Fig. 5, Fig. 8～Figure 11 head, the implication of each indication information is as follows:

R-1bit, retains position, without instruction implication;

E-1bit, being used to indicate this son head is next another R-MAC PDU head afterwards, or the beginning of pay(useful) load;

LCID-5bit, the association attributes of indicating this son corresponding MAC SDU or R-MAC CE, or instruction byte of padding;

F-1bit, being used to indicate L zone length is 7bit or 15bit;

L-7bit or 15bit, be used to indicate the message length of corresponding MAC SDU;

Node ID-8bit or 16bit; And, in the time of this sub corresponding R-MAC SDU, Node ID instruction RN ID; In the time of this sub corresponding U-MAC SDU, Node ID instruction R-UE ID; Wherein R-UEID can be the C-RNTI of R-UE, can be also other can be between eNB and RN the ID of unique identification R-UE.

In R-MAC PDU head, the encapsulation order of each son head is: one or more sub corresponding to R-MAC CE is thereafter the one or more sub-head corresponding to MAC SDU front, is finally the sub-head relevant to byte of padding that possible exist.

The pay(useful) load part of R-MAC PDU comprises three class contents, is respectively R-MAC CE, belongs to RN's or R-UE's one or more MAC SDU and the byte of padding that may carry out according to R-MAC PDU length legislations.In pay(useful) load part, the encapsulation of each R-MAC CE, MAC SDU or byte of padding order is corresponding one by one with corresponding each son head order in R-MAC PDU head.

Wherein, the R-MAC CE in R-MAC PDU pay(useful) load can comprise one or more in following information: buffer status report, C-RNTI instruction, the instruction of discontinuous transmission configuration, competition solve mark instruction, time advance adjustment instruction, power control and indicate.

MAC SDU in R-MAC PDU pay(useful) load can have one or more, can belong to RN, also can belong to respectively different R-UE; The U-MAC SDU that belongs to same R-UE can have one or more, and the R-MAC SDU that belongs to RN also can have one or more.Between the building form of concrete MAC SDU and eNB in LTE system and UE, the mode of MAD SDU is consistent, the corresponding id information containing in corresponding son.

In addition, according to the regulation to R-MAC PDU length, complete after the order encapsulation of R-MAC PDU head part and corresponding R-MAC CE and MAC SDU, if the length of R-MAC PDU does not reach corresponding setting, need to fill the byte of padding of certain byte in R-MAC PDU, the length until R-MACPDU length conforms with the regulations.Byte of padding is partially filled last in R-MAC PDU pay(useful) load, and be that byte of padding adds and indicates accordingly sub-head in R-MAC PDU head, becomes sub-head last in R-MAC PDU head part.

Scheme two:

As shown in figure 12, R-MAC PDU is made up of R-MAC PDU head and R-MAC PDU pay(useful) load two parts, and in a R-MAC PDU, head part, front, is accepted thereafter effective loading section.In R-MACPDU head, comprise multiple R-MAC PDU heads, pay(useful) load part comprises one or more MACSDU and R-MAC CE, also may comprise the filling of certain byte of padding of introducing according to the length legislations of R-MAC PDU.In pay(useful) load, R-MAC CE, front, is MAC SDU afterwards, and possible byte of padding.

The son head of R-MAC PDU is divided into two large classes, content in the not corresponding pay(useful) load of one class head, but the quantity and the respective nodes mark that the correspondence instruction comprising in this R-MAC PDU head are belonged to the MAC SDU head of same node point are unified instruction, are called the sub-head of S.Another kind of MAC SDU or R-MAC CE or the byte of padding corresponding respectively in pay(useful) load, the relevant information of indicating corresponding MAC SDU or R-MAC CE, or the byte of padding of instruction filling.Putting in order corresponding to the R-MAC PDU head of R-MAC CE or MAC SDU or byte of padding in R-MAC PDU head is corresponding one by one with putting in order of R-MACCE in pay(useful) load and MAC SDU and possible byte of padding.

S head is used to indicate quantity and the corresponding node identification of the MAC SDU head that belongs to same node point, takies 2 or 3 bytes, and structure is R/R/E/SDU No./Node ID, shown in Figure 13,14.Wherein, Figure 13 is a kind of structural representation of S head in the present invention program two R-MAC PDU, and NodeID region wherein takies 16bit; Figure 14 is the another kind of structural representation of S head in the present invention program two R-MAC PDU, and Node ID region wherein takies 8bit.

The son head that is used to indicate MAC SDU can take 2 or 3 bytes, and structure is R/R/E/LCID/F/L, as shown in Figure 3, Figure 4.

Be used to indicate the son head that belongs to R-MAC CE or byte of padding and take 1 byte, structure is R/R/E/LCID, as shown in Figure 5.

Below each indication information in Fig. 3-Fig. 5, Figure 13～Figure 14 is set forth, implication is as follows:

R-1bit, retains position, without instruction implication;

E-1bit; In the son head corresponding to R-MAC CE, being used to indicate this son head is next another sub-head corresponding to R-MAC CE afterwards, or the sub-head of S; In S head, be next used to indicate after this S head is the sub-head of another S, or corresponding to the sub-head of MAC SDU; In the son head of other type, being used to indicate this son head is next another height head afterwards, or the beginning of pay(useful) load;

SDU No.-5bit, instruction belongs to the quantity of the MAC SDU head of this S corresponding node in this R-MAC PDU head;

F-1bit, being used to indicate L zone length is 7bit or 15bit;

Node ID-8bit or 16bit; And, in the time of sub corresponding RN of this S, Node ID instruction RN ID; In the time of sub corresponding R-UE of this S, Node ID instruction R-UE ID; Wherein, R-UE ID can be the C-RNTI of R-UE, can be also the ID that other can unique identification R-UE.

In R-MAC PDU head, the encapsulation of each son head order is: corresponding to one or more son heads of R-MAC CE front, the sub-heads of one or more S thereafter, next encapsulating successively the corresponding sub-head of corresponding one or more MAC SDU according to the order of S head, is finally the possible sub-head relevant to byte of padding.

The pay(useful) load part of R-MAC PDU comprises three class contents, is respectively R-MAC CE, belongs to RN, or one or more MAC SDU of R-UE, and the filling of the byte of padding that may carry out according to R-MAC PDU length legislations.In pay(useful) load part, the encapsulation of each R-MAC CE, MAC SDU or byte of padding order is corresponding one by one with corresponding each son head order in R-MAC PDU head.In the time having the multiple MAC SDU that belongs to same R-UE in this R-MAC PDU, these multiple MAC SDU are connected successively by corresponding son head order.And between each group of son head corresponding to the MAC SDU of different R-UE, encapsulation order and corresponding S head order are corresponding one by one.

Wherein, the R-MAC CE in R-MAC PDU pay(useful) load can comprise one or more in following information: buffer status report, the instruction of discontinuous transmission configuration, C-RNTI instruction, competition solve mark instruction, time advance adjustment instruction, power control and indicate.

MAC SDU in R-MAC PDU pay(useful) load can have one or more, can belong to RN, also can belong to respectively different R-UE; The U-MAC SDU that belongs to same R-UE can have one or more, and the R-MAC SDU that belongs to RN also can have one or more.Between the building form of concrete MAC SDU and eNB in LTE system and UE, the mode of MAD SDU is consistent.

According to the regulation to R-MAC PDU length, complete after the order encapsulation of R-MAC PDU head part and corresponding MAC SDU and R-MAC CE, if the length of R-MAC PDU does not reach corresponding setting, need to fill byte of padding in R-MAC PDU the length until R-MAC PDU length conforms with the regulations.Byte of padding is partially filled last in the pay(useful) load of R-MAC PDU, and in R-MAC PDU head, adds the sub-head of corresponding instruction for byte of padding, becomes sub-head last in R-MAC PDU head part.

Scheme three:

As shown in figure 15, R-MAC PDU is made up of R-MAC PDU head and R-MAC PDU pay(useful) load two parts, and in a R-MAC PDU, head part, front, is accepted thereafter effective loading section.In R-MACPDU head, comprise multiple R-MAC PDU heads, pay(useful) load part comprises one or more MACSDU and R-MAC CE, also may comprise certain byte of padding of introducing according to the length legislations of R-MAC PDU.In pay(useful) load, R-MAC CE, front, is MAC SDU and possible byte of padding afterwards.A MAC SDU, R-MAC CE or byte of padding in the corresponding pay(useful) load of each R-MAC PDU head difference, the relevant information of indicating corresponding MAC SDU or R-MAC CE, or the byte of padding of instruction filling.Each R-MAC PDU head putting in order in R-MAC PDU head is corresponding one by one with putting in order of R-MAC CE in pay(useful) load and MAC SDU and possible byte of padding.

Wherein, the son head that is used to indicate MAC SDU can take 2-5 byte, structure is R/D/E/LCID/F/L or R/D/E/LCID/F/L/Node ID, as shown in Figure 16～Figure 21, wherein, Figure 16 is a kind of structural representation corresponding to the son head of MAC SDU in the present invention program three R-MAC PDU, and NodeID region wherein takies 16bit, and L region takies 7bit; Figure 17 is the another kind of structural representation corresponding to the son head of MAC SDU in the present invention program three R-MAC PDU, and Node ID region wherein takies 16bit, and L region takies 15bit; Figure 18 is another structural representation corresponding to the son head of MAC SDU in the present invention program three R-MAC PDU, and Node ID region wherein takies 8bit, and L region takies 7bit; Figure 19 is another structural representation corresponding to the son head of MAC SDU in the present invention program three R-MAC PDU, and Node ID region wherein takies 8bit, and L region takies 15bit.Figure 20, Figure 21 are two structural representations that do not comprise Node ID region in the present invention program three R-MAC PDU in the son head corresponding to MAC SDU, and wherein, in Figure 20, L region takies 7bit; In Figure 21, L region takies 15bit.

Below each indication information in Fig. 5, Figure 16～Figure 21 is set forth, as follows:

R-1bit, retains position, without instruction implication;

D-1bit, indicate this son MAC SDU that corresponding MAC SDU is corresponding with last height head whether to belong to same node, if the MAC SDU corresponding with last height head belongs to same node, this sub-header structure is R/D/E/LCID/F/L, does not indicate corresponding node identification; If do not belong to same node, this sub-header structure is R/D/E/LCID/F/L/Node ID, exists Node ID region to indicate the node identification of the affiliated node of the MAC SDU that this son head is corresponding behind L region;

F-1bit, being used to indicate L zone length is 7bit or 15bit;

Node ID-8bit or 16bit; And, in the time of this sub corresponding R-MAC SDU, Node ID instruction RN ID; In the time of this sub corresponding U-MAC SDU, Node ID instruction R-UE ID; Wherein, R-UEID can be the C-RNTI of R-UE, can be also other can be between eNB and RN the ID of unique identification R-UE.

The pay(useful) load part of R-MAC PDU comprises three class contents, is respectively R-MAC CE, belongs to RN, or one or more MAC SDU of R-UE, and the filling of the byte of padding that may carry out according to R-MAC PDU length legislations.In pay(useful) load part, the encapsulation of each R-MAC CE, MAC SDU or byte of padding order is corresponding one by one with corresponding each son head order in R-MAC PDU head.

MAC SDU in R-MAC PDU pay(useful) load can have one or more, can belong to RN, also can belong to respectively different R-UE; The U-MAC SDU that belongs to same R-UE can have one or more, and the R-MAC SDU that belongs to RN also can have one or more, belongs to RN's or to belong to multiple MAC SDU of same R-UE adjacent successively.Between the building form of concrete MAC SDU and eNB in LTE system and UE, the mode of MAD SDU is consistent.In the time that a MAC SDU belongs to RN or belongs to first MAC SDU of certain R-UE in R-MAC PDU for this reason, the UE id information of indicating RN ID or R-UE in corresponding son head, if adjacent MAC SDU belongs to same node point and does not need again instructs node mark thereafter.

In addition, according to the regulation to R-MAC PDU length, complete after the order encapsulation of R-MAC PDU head part and corresponding R-MAC CE and MAC SDU, if the length of R-MAC PDU does not reach corresponding setting, need to fill the byte of padding of certain byte number in R-MAC PDU, the length until R-MACPDU length conforms with the regulations.Byte of padding is partially filled last in R-MAC PDU pay(useful) load, and be that byte of padding adds and indicates accordingly sub-head in R-MAC PDU head, becomes sub-head last in R-MAC PDU head part.

It is to be noted: the related R-MAC PDU form of above-mentioned three kinds of schemes is applicable to different system requirements, such as when system requirements being: the data of back haul link transmission belong to multiple R-UE, and when the MAC SDU quantity of each R-UE is few, because scheme one is to carry out node identification instruction with Node ID for each MAC SDU in corresponding son head, therefore, under this system requirements, the R-MACPDU form of employing scheme one is comparatively applicable, can effectively indicate flexibly the MAC SDU of each node encapsulating in R-MAC PDU.And work as system requirements be: when the multiple MAC SDU that encapsulate in R-MAC PDU belong to a small amount of R-UE, when the MAC SDU quantity of each R-UE is more, because scheme two and scheme three are that MAC SDU to belonging to same node point unifies instruction, therefore, under this system requirements, the R-MAC PDU form of employing scheme two and scheme three is more applicable, can, in effective instruction R-MAC PDU in related content, further reduce instruction expense.

In a word, the R-MAC PDU form for repeated link that the present invention proposes, and transmit after utilizing this form encapsulation of data and control information, realize the effective transmission to multiple R-UE data on back haul link, flexible adaptation system requirements, effectively improve back haul link resource utilization, be conducive to meet the different requirements of R-UE.

Below, for above-mentioned three kinds of specific implementations, give an actual example and set forth respectively.Wherein, the R-MAC PDU form relating in example 1 and example 2 employing schemes one; The R-MAC PDU form relating in example 3 and example 4 employing schemes two; The R-MAC PDU form relating in example 5 and example 6 employing schemes three.

Example 1:

ENB is that a R-MAC PDU transmits to RN on repeated link by a MAC SDU and 3 the R-MAC CE Information encapsulations of 5 MAC SDU, RN belonging to respectively 5 R-UE under RN, each R-UE is expressed as R-UE1 to R-UE5, three R-MA CE are expressed as R-MACCE1 to R-MAC CE 3, the R-MAC PDU scheme one proposing according to the present invention, obtain R-MACPDU, as shown in figure 22.

In the head part of R-MAC PDU, encapsulate successively respectively:

3 sub-heads of the R/R/E/LCID corresponding to R-MAC CE, correspond respectively to R-MAC CE 1 to the R-MAC CE 3 of pay(useful) load part, and a son form as shown in Figure 5.

6 R/R/E/LCID/F/L/Node ID heads corresponding to MAC SDU, correspond respectively to 5 MAC SDU of pay(useful) load part R-UE 1 to R-UE 5 and eNB and are transferred to 1 MACSDU of RN.Wherein, the C-RNTI that has adopted corresponding R-UE is UE ID mark, and RN ID also adopts 16bit, is filled in the Node ID region of the form of the son shown in Fig. 8 or Fig. 9.

In R-MAC PDU pay(useful) load, each R-MAC CE, MAC SDU are corresponding one by one with corresponding son head order in R-MAC PDU head.The Node id information comprising in each MAC SDU head has indicated corresponding MAC SDU to belong to RN or certain R-UE.

Meanwhile, due to the R-MAC PDU length of encapsulation after the completing length that conforms with the regulations, without filling, in R-MAC PDU, pay(useful) load does not comprise byte of padding, in corresponding head part, does not comprise the sub-head of indicating byte of padding yet.

Example 2:

RN by 5 MAC SDU of 4 R-UE of subordinate, self be that a R-MAC PDU transmits to eNB on repeated link to 1 MACSDU and 2 R-MAC CE Information encapsulations of eNB transmission, each R-UE is expressed as R-UE1 to R-UE4, two R-MAC CE are expressed as R-MAC CE1 and R-MAC CE 2, wherein R-UE 3 has 2 MAC SDU, other R-UE respectively has a MAC SDU, the R-MAC PDU scheme one proposing according to the present invention, obtains R-MAC PDU, as shown in figure 23.

In the head part of R-MAC PDU, encapsulate successively respectively:

2 sub-heads of the R/R/E/LCID corresponding to R-MAC CE, correspond respectively to R-MAC CE 1 to the R-MAC CE 3 of pay(useful) load part, and a son form as shown in Figure 5.

6 R/R/E/LCID/F/L/Node ID heads corresponding to MAC SDU, correspond respectively to totally 6 MAC SDU of pay(useful) load part R-UE 1 to R-UE 4 and RN.Wherein, having adopted other can the UE ID of unique identification R-UE be mark between eNB and RN, and mark ID takies 8bit, and RN ID also takies 8bit, and a son form is as shown in Figure 10 or Figure 11.

Simultaneously, because the R-MAC PDU length of encapsulation after completing does not reach corresponding specific length, the byte number of the corresponding byte of padding of last filling of pay(useful) load in R-MAC PDU, and being used to indicate the sub-head of R/R/E/LCID of byte of padding in the last interpolation of head part accordingly, a son form is as shown in Figure 5.

Example 3:

ENB is that a R-MAC PDU transmits to RN on repeated link by 6 the MAC SDU and 3 the R-MAC CE Information encapsulations that belong to 2 R-UE under RN, two R-UE are expressed as R-UE 1 and R-UE 2, three R-MAC CE are expressed as R-MAC CE1 to R-MAC CE 3, the MAC SDU that wherein belongs to R-UE 1 has 2, the MAC SDU that belongs to R-UE 2 has 4, the R-MAC PDU scheme two proposing according to the present invention, obtains R-MAC PDU, as shown in figure 24.

In the head part of R-MAC PDU, encapsulate successively respectively:

2 sub-heads of S, corresponding R-UE 1 and R-UE 2 respectively, the S head of R-UE 1, front, indicated R-UE 1 in this R-MAC PDU head, to contain 2 MAC SDU heads, and has been indicated the UE ID of R-UE; Be the sub-head of S corresponding to R-UE 2, indicated the UE ID of R-UE 2 and in this R-MAC PDU head, included 4 MAC SDU heads thereafter.Wherein, the C-RNTI that has adopted corresponding R-UE is UE ID mark, and a son form as shown in figure 13.

6 sub-heads of the R/R/E/LCID/F/L corresponding to MAC SDU, correspond respectively to all MAC SDU of pay(useful) load part R-UE 1 and R-UE 2, and a son form as shown in Figure 3 or Figure 4.Wherein, according to the order of S head, front, be next 4 sub-heads corresponding to the MAC SDU of R-UE 2 corresponding to 2 son heads of the MAC SDU of R-UE 1.

R-MAC CE in R-MAC PDU pay(useful) load, the encapsulation of MAC SDU are sequentially corresponding one by one with corresponding each son head order in R-MACPDU head.The MAC SDU that belongs to same node point is adjacent in turn.

Example 4:

RN is that a R-MAC PDU transmits to eNB on repeated link by 6 MAC SDU and 2 the R-MAC CE Information encapsulations of 2 R-UE of subordinate, two R-UE are expressed as R-UE1 and R-UE 2, two R-MA CE are expressed as R-MAC CE1 and R-MAC CE 2, the MAC SDU that wherein belongs to R-UE 1 has 3, the MAC SDU that belongs to R-UE 2 has 3, the R-MAC PDU scheme two proposing according to the present invention, obtains R-MAC PDU, as shown in figure 25.

In the head part of R-MAC PDU, encapsulate successively respectively:

2 sub-heads of the R/R/E/LCID corresponding to R-MAC CE, correspond respectively to R-MAC CE 1 and the R-MAC CE 2 of pay(useful) load part, and a son form as shown in Figure 5.

2 sub-heads of S, corresponding R-UE 1 and R-UE 2 respectively, the S head of R-UE 1, front, indicated R-UE 1 in this R-MAC PDU head, to contain 3 MAC SDU heads, and has been indicated the UE ID of R-UE; Be the sub-head of S corresponding to R-UE 2, indicated the UE ID of R-UE 2 and in this R-MAC PDU head, included 3 MAC SDU heads thereafter.Wherein, having adopted other can the UE ID of unique identification R-UE be mark between eNB and RN, and a son form as shown in figure 14.

6 sub-heads of the R/R/E/LCID/F/L corresponding to MAC SDU, correspond respectively to all MAC SDU of pay(useful) load part R-UE 1 and R-UE 2, and a son form as shown in Figure 3 or Figure 4.Wherein, according to the order of S head, front, be next 3 sub-heads corresponding to the MAC SDU of R-UE 2 corresponding to 3 son heads of the MAC SDU of R-UE 1.

MAC CE in R-MAC PDU pay(useful) load, the encapsulation of MAC SDU are sequentially corresponding one by one with corresponding each son head order in R-MACPDU head.The MAC SDU that belongs to same node point is adjacent in turn.

Example 5:

By belonging to totally 4 of the MAC SDU of 2 R-UE, the MAC SDU that belongs to RN under RN, to have 2 and 3 R-MAC CE Information encapsulations be that a R-MAC PDU transmits to RN on repeated link to eNB, two R-UE are expressed as R-UE 1 and R-UE 2, three R-MAC CE are expressed as R-MAC CE1 to R-MAC CE 3, the MAC SDU that wherein belongs to R-UE 1 has 1, the MAC SDU that belongs to R-UE 2 has 3, the R-MAC PDU scheme three proposing according to the present invention, obtain R-MAC PDU, as shown in figure 26.

In the head part of R-MAC PDU, encapsulate successively respectively:

6 R/D/E/LCID/F/L corresponding to MAC SDU or R/D/E/LCID/F/L/Node ID head, correspond respectively to all MAC SDU of pay(useful) load part R-UE 1, R-UE 2 and RN.

Wherein, corresponding to 1 son head of the MAC SDU of R-UE 1, front, the son head of the MACSDU of instruction R-UE 1 adopts R/D/E/LCID/F/L/Node ID form, and D indicating bit value is wherein 1, indicate in this son head and contain Node id information, Node ID indicates in region corresponding R-UE ID.

2 sub-heads corresponding to the MAC PDU of RN thereafter, the son head that first instruction belongs to the MACSDU of RN adopts R/D/E/LCID/F/L/Node ID form, D indicating bit value is wherein 1, indicates in this son head and contains Node id information, the id information of Node ID region instruction RN.Thereafter another indicated the son employing R/D/E/LCID/F/L form corresponding to the MAC SDU of RN, and D indicating bit value is wherein 0, represents that this son node that corresponding MAC SDU is affiliated is indicated with last height head identical.

Next be 3 sub-heads corresponding to the MAC SDU of R-UE 2, the son head of the MAC SDU of first instruction R-UE 2 adopts R/D/E/LCID/F/L/Node ID form, D indicating bit value is wherein 1, indicate in this son head and contain Node id information, Node ID indicates in region corresponding R-UE ID.Thereafter other 2 son employing R/D/E/LCID/F/L forms of indicating the MAC SDU of R-UE 2, D indicating bit value is wherein 0, represents that this son node that corresponding MAC SDU is affiliated is indicated with last height head identical.

In the son head of the UE id information that comprises corresponding R-UE, identify taking C-RNTI as UE ID, take 16bit, a son form is as shown in Figure 16 or Figure 17.

Example 6:

RN is that a R-MAC SDU transmits to eNB on repeated link by 6 MAC SDU and 1 the R-MAC CE Information encapsulation of 2 R-UE of subordinate, two R-UE are expressed as R-UE1 and R-UE 2, the MAC SDU that wherein belongs to R-UE 1 has 3, the MAC SDU that belongs to R-UE 2 has 3, the R-MAC PDU scheme three proposing according to the present invention, obtain R-MAC PDU, as shown in figure 27.

In the head part of R-MAC PDU, encapsulate successively respectively:

1 sub-head of the R/R/E/LCID corresponding to R-MAC CE, corresponds respectively to the R-MAC CE 1 of pay(useful) load part, and a son form as shown in Figure 5.

6 R/D/E/LCID/F/L corresponding to MAC SDU or R/D/E/LCID/F/L/Node ID head, correspond respectively to all MAC SDU of pay(useful) load part R-UE 1 and R-UE 2.

Wherein, corresponding to 3 son heads of the MAC SDU of R-UE 1 front, the son head of the MAC SDU of first instruction R-UE 1 adopts R/D/E/LCID/F/L/Node ID form, D indicating bit value is wherein 1, indicate in this son head and contain UE id information, thereafter another 2 son employing R/D/E/LCID/F/L forms of indicating the MAC SDU of R-UE 1, D indicating bit value is wherein 0, represents that this son node that corresponding MAC SDU is affiliated is indicated with last height head identical.

Next be 3 sub-heads corresponding to the MAC SDU of R-UE 2, the son head of the MAC SDU of first instruction R-UE 2 adopts R/D/E/LCID/F/L/Node ID form, D indicating bit value is wherein 1, indicate in this son head and contain UE id information, thereafter the son head of the MAC SDU of other 2 instruction R-UE 2 adopts R/D/E/LCID/F/L form, D indicating bit value is wherein 0, represents that this son node that corresponding MAC SDU is affiliated is indicated with last height head identical.

In the son head of the UE id information that comprises corresponding R-UE, having adopted other can the UE ID of unique identification R-UE be mark between eNB and RN, and a son form is as shown in Figure 18 or Figure 19.

Device embodiment:

As shown in figure 28, a kind of transmitting device for repeated link, this device comprises: indication information generation unit, encapsulation unit and transmission unit.Wherein, indication information generation unit, for generating the node indication information of node under the MAC SDU that pay(useful) load is encapsulated, and passes to encapsulation unit and is encapsulated in R-MAC PDU head.Encapsulation unit, in R-MAC PDU pay(useful) load, encapsulates R-MAC CE waiting for transmission between eNB and RN and the MAC SDU that is under the jurisdiction of each node; In R-MACPDU head, encapsulate node indication information; And R-MAC PDU is passed to transmission unit.Transmission unit, for transmitting R-MAC PDU on the back haul link between eNB and RN.

Here, encapsulation unit, is further used for being at least packaged with in R-MAC PDU pay(useful) load: k R-MAC CE; M R-MAC SDU; N U-MAC SDU, wherein, m >=0, k, n >=1.

Here, encapsulation unit, is further used for being further also packaged with byte of padding in R-MAC PDU pay(useful) load, and byte of padding is positioned at the last of pay(useful) load part.

Due to adopt node indication information difference, therefore, in device, indicate the specific implementation of information generating unit different, below respectively set forth.

The first specific implementation: indication information generation unit, is further used for the Node ID that comprises respective nodes in the son head of instruction MAC SDU, as node indication information.

Now, a MAC SDU of the corresponding instruction of son head of a MAC SDU; In R-MAC PDU head, also comprise: the son head of instruction R-MAC CE and optionally indicate the sub-head of byte of padding.

Here, indication information generation unit, the form that is further used for the son head of the MAC SDU adopting is specially: R/R/E/LCID/F/L/Node ID; The form of the son head of the R-MAC CE adopting or the son head of byte of padding is specially: R/R/E/LCID.Wherein,

When the corresponding instruction of current MAC SDU head R-MAC SDU, in current MAC SDU head, adopt Node ID indicating bit specifically to indicate RN ID; When the corresponding instruction of current MAC SDU head U-MACSDU, in current MAC SDU head, adopt Node ID indicating bit specifically to indicate R-UE ID.

The second specific implementation: indication information generation unit, is further used for adopting the sub-head of S in R-MAC PDU head, as node indication information.

Now, the instruction of a S head belongs to one or more MAC SDU of same node point; In R-MAC PDU head, also comprise: the son head of instruction R-MAC CE, the son head of instruction MAC SDU and optionally indicate the sub-head of byte of padding.

Here, indication information generation unit, is further used for being specially R/R/E/SDU No./Node ID as the form of the S head of node indication information; The form of the MAC SDU head adopting is specially: R/R/E/LCID/F/L; The form of the R-MAC CE head adopting or byte of padding head is specially: R/R/E/LCID.

Wherein, in the son head of current R-MAC CE, E indicating bit is specifically indicated: after the son head of current R-MAC CE, be next another R-MAC CE head or the sub-head of S; In current S head, E indicating bit is specifically indicated: after current S head, be next another S head or MAC SDU head; In the current son head of other type outside R-MAC CE head and S head, E indicating bit is specifically indicated: after current son head, be next another height head, or the beginning of pay(useful) load.

Here, indication information generation unit, is further used for, in current S head, adopting SDU No. specifically to indicate: the quantity that belongs to the MAC SDU head of current S institute's corresponding node.

Here, indication information generation unit, is further used for, in current S head, adopting Node ID specifically to indicate: the node identification information of respective nodes; In the time that respective nodes is RN, Node ID is RN ID, and in the time that respective nodes is R-UE, Node ID is R-UE ID.

The third specific implementation: indication information generation unit, is further used for comprising D indicating bit or D indicating bit and Node ID in the son head of MAC SDU, as node indication information.

Now, in MAC SDU head, comprise D indicating bit, indicate a current son corresponding MAC SDU and the corresponding MAC SDU of last height head whether to belong to same node; In R-MAC PDU head, also comprise: the son head of instruction R-MAC CE and optionally indicate the sub-head of byte of padding.

Here, indication information generation unit, be further used for comprising node indication information the form of son head of MAC SDU be specially: R/D/E/LCID/F/L or R/D/E/LCID/F/L/Node ID; The form of the R-MAC CE head adopting or byte of padding head is specially: R/R/E/LCID.

Wherein, in current MAC SDU head, in the time that D indicating bit indicates the MAC SDU of the corresponding instruction of current MAC SDU head institute not belong to same node with the MAC SDU of the corresponding instruction of last height head, a form for current sub employing is specially R/D/E/LCID/F/L/Node ID.Wherein, Node ID specifically indicates: the node identification information of respective nodes; In the time that respective nodes is RN, Node ID is RN ID, and in the time that respective nodes is R-UE, Node ID is R-UE ID.

In current MAC SDU head, in the time that D indicating bit indicates the MAC SDU of the corresponding instruction of current MAC SDU head institute to belong to same node with the MAC SDU of the corresponding instruction of last height head, a form for current sub employing is specially R/D/E/LCID/F/L.

Device embodiment:

As shown in figure 29, a kind of receiving system for repeated link, this device comprises: indication information resolution unit, decapsulation unit.Wherein, indication information resolution unit, resolves for obtaining node indication information from the encapsulation of R-MAC PDU head, and analysis result is passed to decapsulation unit; Wherein, node indication information is the node indication information of node under the MAC SDU to encapsulating in R-MAC PDU pay(useful) load.Decapsulation unit, for according to analysis result, in R-MAC PDU pay(useful) load, carries out decapsulation to R-MAC CE waiting for transmission between eNB and RN and the MAC SDU that is under the jurisdiction of each node; Obtain R-MAC CE and the MAC SDU that belongs to each node in pay(useful) load.

Here, decapsulation unit, is further used for parsing packaged information in R-MAC PDU pay(useful) load, at least comprises: k R-MAC CE; M R-MAC SDU; N U-MAC SDU, wherein, m >=0, k, n >=1.

Here, decapsulation unit, is further used for also parsing byte of padding in R-MAC PDU pay(useful) load; Byte of padding is positioned at the last of pay(useful) load part.

Due to adopt node indication information difference, therefore, in device, indicate the specific implementation of information analysis unit and decapsulation unit different, below respectively set forth.

The first specific implementation: indication information resolution unit, is further used for parsing node indication information for the Node ID of the respective nodes comprising in the son head of instruction MAC SDU.

The form of MAC SDU head is specially: in the situation of R/R/E/LCID/F/L/Node ID, here, indication information resolution unit obtains the NodeID of node under corresponding MAC SDU from MAC SDU; Indication information resolution unit, is further used for parsing Node ID and specifically indicates: respective nodes is RN, and Node ID is RN ID; Or indication information resolution unit, is further used for Node ID and specifically indicates: respective nodes is R-UE, Node ID is R-UE ID.

Here, indication information resolution unit, further passes to described decapsulation unit by resolving the node indication information obtaining.

Here, decapsulation unit, further, according to the Node id information to node under each MACSDU obtaining from indication information resolution unit, carries out decapsulation to the one or more MAC SDU that comprise in pay(useful) load.

The second specific implementation: indication information resolution unit, is further used for parsing node indication information for the sub-head of S comprising in R-MAC PDU head; Wherein, the instruction of a S head belongs to one or more MAC SDU heads of same node point.

The form of S head is specially in the situation of R/R/E/SDU No./Node ID, and here, indication information resolution unit, is further used for parsing E indicating bit and specifically indicates: after current S head, be next another S head or MAC SDU head.

Here, indication information resolution unit, is further used for parsing SDU No. and specifically indicates: the quantity that belongs to the MAC SDU head of current S institute's corresponding node.

Here, indication information resolution unit, is further used for parsing Node ID and specifically indicates: respective nodes is RN, and Node ID is RN ID; Or indication information resolution unit, is further used for Node ID and specifically indicates: respective nodes is R-UE, Node ID is R-UE ID.

Here, indication information resolution unit, further passes to decapsulation unit by resolving the node indication information obtaining.

Here, decapsulation unit, further according to obtain from indication information resolution unit to belonging to the MAC SDU quantity of same node and the Node id information of affiliated node, the one or more MAC SDU that comprise in pay(useful) load are carried out to decapsulation.

The third specific implementation: indication information resolution unit, is further used for parsing node indication information for the D indicating bit or D indicating bit and the Node ID that comprise in the son head of MAC SDU.

Here, indication information resolution unit, be further used for parsing the instruction of D indicating bit: the MAC SDU of the corresponding instruction of current MACSDU head institute does not belong to same node with the MAC SDU of the corresponding instruction of last height head, and the form of current MAC SDU is specially: R/D/E/LCID/F/L/Node ID.Indication information resolution unit, is further used for parsing Node ID and specifically indicates: respective nodes is RN, and Node ID is RN ID; Or indication information resolution unit, is further used for Node ID and specifically indicates: respective nodes is R-UE, Node ID is R-UE ID.

Indication information resolution unit, be further used for parsing the instruction of D indication letter: the current MAC SDU head corresponding MAC SDU indicating of institute belongs to same node with the MAC SDU of the corresponding instruction of last height head, and the form of current MAC SDU is specially: R/D/E/LCID/F/L.

Here, decapsulation unit, further, according to obtaining and corresponding Node id information whether identical with previous MAC SDU to node under MAC SDU from indication information resolution unit, carries out decapsulation to the one or more MAC SDU that comprise in pay(useful) load.

The relaying more than relating to represents with Relay; Back haul link represents with Backhaul Link; Access link represents with Access Link; MAC PDU head represents with MAC PDU Header; Son head represents with Subheader; MAC PDU pay(useful) load represents with MAC PDU Payload; MAC PDU head represents with MAC PDU Subheader; Byte of padding represents with Padding; R-MAC PDU represents with Relay-MAC PDU; R-MAC CE represents with Relay MAC CE; Buffer status report represents with Buffer Status Report R-MAC control element; Discontinuous transmission configuration instruction represents with DRXCommand R-MAC Control Element; Time advance adjustment instruction represents with Timing AdvanceCommand R-MAC Control Element; Power control instruction represents with Power HeadroomR-MAC Control Element; S head represents with SDU Number indication subheader, is abbreviated as S-subheader.

The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.

Claims

1. the transmission method for repeated link, it is characterized in that, the method comprises: in the pay(useful) load of relay media access control protocol data cell (R-MAC PDU), to relaying MAC control element waiting for transmission (R-MAC CE) between enhanced base station (eNB) and relay station (RN) be under the jurisdiction of after MAC service data unit (MAC SDU) encapsulation of each node, on the back haul link between described eNB and described RN, transmit R-MAC PDU;

Wherein, the each node under the MAC SDU encapsulating in to described pay(useful) load by the node indication information that encapsulates in R-MAC PDU head is indicated respectively, and described node comprises RN and RN subordinate's user terminal (R-UE);

The R-UE that described node comprises is at least one;

Each node under the described MAC SDU encapsulating in to described pay(useful) load by the node indication information that encapsulates in R-MAC PDU head is indicated respectively, is specially the U-MAC SDU that node indication information difference instruction is under the jurisdiction of the R-MAC SDU of RN node and is under the jurisdiction of R-UE node.

2. method according to claim 1, is characterized in that, described R-MAC CE is the MAC control element relevant to RN;

3. method according to claim 1, is characterized in that, the node identification (Node ID) of node under the each MAC SDU of the concrete instruction of described node indication information.

4. method according to claim 2, is characterized in that, in R-MAC PDU pay(useful) load, is at least packaged with: k R-MAC CE; M R-MAC SDU; N U-MAC SDU, wherein, m >=0, k, n >=1.

5. method according to claim 4, is characterized in that, is further also packaged with byte of padding in R-MAC PDU pay(useful) load, and byte of padding is positioned at the last of pay(useful) load part.

6. method according to claim 1, is characterized in that, described node indication information is specially: R-MAC PDU head comprises the sub-head of instruction MAC SDU; A MAC SDU of a corresponding instruction of MAC SDU head, the NodeID that comprises the affiliated node of indicated MAC SDU in MAC SDU head;

7. method according to claim 6, is characterized in that, the form of MAC SDU head is specially: R/R/E/LCID/F/L/Node ID; The form of the son head of R-MAC CE or the son head of byte of padding is specially: R/R/E/LCID; Wherein,

8. method according to claim 1, is characterized in that, described node indication information is specially: R-MAC PDU head comprises the sub-head of S; The instruction of a S head belongs to the corresponding one or more sub-heads of one or more MAC SDU of same node point;

9. method according to claim 8, it is characterized in that, the sub-head of described S, further indicates a son quantity of the one or more MAC SDU that belong to same node point and corresponding Node ID to unify instruction to the correspondence comprising in described R-MAC PDU head.

10. method according to claim 9, it is characterized in that, according to the instruction of the encapsulation order of the one or more S head comprising in described R-MAC PDU head and each S head, determine the Node ID of node under the corresponding MAC of the instruction SDU of son head institute of the one or more instruction MAC SDU that comprise in described head; Wherein, order is adjacent successively to belong to the corresponding son head of the MAC SDU of same node point; Between MAC SDU head corresponding to different nodes, encapsulation order is corresponding one by one with corresponding S head order.

11. methods according to claim 9, is characterized in that, in described pay(useful) load, the encapsulation of included content order is corresponding one by one with the corresponding encapsulation order of sub; Wherein,

12. methods according to claim 9, is characterized in that, the form of S head is specially R/R/E/SDU No./Node ID; The form of the son head of MAC SDU is specially: R/R/E/LCID/F/L; The form of R-MAC CE head or byte of padding head is specially: R/R/E/LCID; Wherein,

13. methods according to claim 12, is characterized in that, in described current S head, SDUNo. specifically indicates: the quantity that belongs to the MAC SDU head of current S institute's corresponding node.

14. methods according to claim 12, is characterized in that, when a described current S corresponding instructs node is RN, in current S head, Node ID specifically indicates RN ID;

15. methods according to claim 1, is characterized in that, described node indication information is specially: the sub-head that comprises instruction MAC SDU in R-MAC PDU head; A MAC SDU of a corresponding instruction of MAC SDU head, adopts D indicating bit in MAC SDU head, indicates a current son corresponding MACSDU and the corresponding MAC SDU of last height head whether to belong to same node;

16. methods according to claim 15, is characterized in that, the form of MAC SDU head is specially: R/D/E/LCID/F/L or R/D/E/LCID/F/L/Node ID; The form of R-MAC CE head or byte of padding head is specially: R/R/E/LCID; Wherein,

17. methods according to claim 16, is characterized in that, MAC SDU the form adopting is specially R/D/E/LCID/F/L/Node ID, and when the son head correspondence of current MAC SDU is indicated R-MAC SDU, Node ID specifically indicates RN ID;

When the son head correspondence of current MAC SDU is indicated U-MAC SDU, Node ID specifically indicates R-UE ID.

18. methods according to claim 15, is characterized in that, in described R-MAC PDU head, one or more MAC SDU heads that corresponding instruction belongs to same node are sequentially adjacent successively;

19. according to the method described in claim 6 or 15, it is characterized in that, in R-MAC PDU pay(useful) load, the encapsulation of included content order is corresponding one by one with the encapsulation order of corresponding son head; Wherein,

20. according to the method described in claim 7 or 14 or 17, it is characterized in that, described R-UE ID specifically comprises: the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI) of R-UE and the identification information of other R-UE of unique identification between eNB and RN.

21. 1 kinds of transmitting devices for repeated link, is characterized in that, this device comprises: indication information generation unit, encapsulation unit and transmission unit; Wherein,

Indication information generation unit, for generating the node indication information of node under the MAC SDU that pay(useful) load is encapsulated, and passes to encapsulation unit and is encapsulated in R-MAC PDU head; The U-MAC SDU that described node indication information is under the jurisdiction of the R-MAC SDU of RN node and is under the jurisdiction of R-UE node for distinguishing instruction;

Transmission unit, for transmitting described R-MAC PDU on the back haul link between described eNB and described RN.

22. devices according to claim 21, is characterized in that, described encapsulation unit is further used for being at least packaged with in R-MAC PDU pay(useful) load: k R-MAC CE; M R-MAC SDU; N U-MAC SDU, wherein, m >=0, k, n >=1.

23. devices according to claim 22, is characterized in that, described encapsulation unit is further used for being further also packaged with byte of padding in R-MAC PDU pay(useful) load, and byte of padding is positioned at the last of pay(useful) load part.

24. devices according to claim 21, is characterized in that, described indication information generation unit is further used for the Node ID that comprises respective nodes in the son head of described instruction MAC SDU, as described node indication information.

25. devices according to claim 24, is characterized in that, described indication information generation unit, and the form that is further used for the MAC SDU head adopting is specially: R/R/E/LCID/F/L/Node ID; Wherein,

26. devices according to claim 21, is characterized in that, described indication information generation unit is further used for adopting the sub-head of S in R-MAC PDU head, as described node indication information;

27. devices according to claim 26, is characterized in that, described indication information generation unit is further used for being specially R/R/E/SDU No./Node ID as the form of the S head of node indication information;

28. devices according to claim 21, is characterized in that, described indication information generation unit is further used for comprising D indicating bit or D indicating bit and Node ID in the son head of described MAC SDU, as described node indication information.

29. devices according to claim 28, is characterized in that, described indication information generation unit, and the form that is further used for the MAC SDU head that comprises node indication information is specially: R/D/E/LCID/F/L or R/D/E/LCID/F/L/Node ID; Wherein,

30. 1 kinds of receiving systems for repeated link, is characterized in that, this device comprises: indication information resolution unit, decapsulation unit; Wherein,

Indication information resolution unit, resolves for the node indication information that R-MAC PDU head is encapsulated, and analysis result is passed to decapsulation unit; Wherein, described node indication information is the node indication information of node under the MAC SDU to encapsulating in R-MAC PDU pay(useful) load, the U-MAC SDU that is under the jurisdiction of the R-MAC SDU of RN node and is under the jurisdiction of R-UE node for distinguishing instruction;

31. devices according to claim 30, is characterized in that, described decapsulation unit is further used for parsing packaged information in R-MAC PDU pay(useful) load, at least comprises: k R-MACCE; M R-MAC SDU; N U-MAC SDU, wherein, m >=0, k, n >=1.

32. devices according to claim 31, is characterized in that, described decapsulation unit is further used for also parsing byte of padding in R-MAC PDU pay(useful) load; Described byte of padding is positioned at the last of pay(useful) load part.

33. devices according to claim 30, is characterized in that, described indication information resolution unit is further used for parsing node indication information for the Node ID of the respective nodes comprising in the son head of described instruction MAC SDU.

34. devices according to claim 33, is characterized in that, the form of MAC SDU head is specially: R/R/E/LCID/F/L/Node ID;

35. devices according to claim 30, is characterized in that, described indication information resolution unit is further used for parsing node indication information for the sub-head of S comprising in R-MAC PDU head; Wherein, the instruction of a S head belongs to one or more MAC SDU heads of same node point.

36. devices according to claim 35, is characterized in that, the form of S head is specially R/R/E/SDU No./Node ID;

Described indication information resolution unit, is further used for parsing Node ID and specifically indicates: respective nodes is RN, and Node ID is RN ID; Or described indication information resolution unit, is further used for Node ID and specifically indicates: respective nodes is R-UE, Node ID is R-UE ID.

37. devices according to claim 30, is characterized in that, described indication information resolution unit is further used for parsing node indication information for the D indicating bit or D indicating bit and the Node ID that comprise in the son head of described MAC SDU.

38. according to the device described in claim 37, it is characterized in that, described indication information resolution unit, is further used for parsing the instruction of D indicating bit: the MAC SDU that current MAC SDU head institute correspondence is indicated does not belong to same node with the MAC SDU of the corresponding instruction of last height head; The form of current MAC SDU head is specially: R/D/E/LCID/F/L/Node ID;

39. according to the device described in claim 38, it is characterized in that, the form of the MACSDU head that comprises node indication information is specially: in the situation of R/D/E/LCID/F/L/Node ID, described indication information resolution unit, is further used for parsing Node ID and specifically indicates: the RN ID of respective nodes; Or described indication information resolution unit, is further used for parsing Node ID and specifically indicates: R-UE ID.