CN101990245A

CN101990245A - Transmission method, transmission device and receiving device for relay link

Info

Publication number: CN101990245A
Application number: CN2009100904310A
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: 2011-03-23
Anticipated expiration: 2029-08-04
Also published as: WO2011015095A1; CN101990245B

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, transmitting device and receiving system that is used for repeated link

Technical field

The present invention relates to moving communicating field, relate in particular to the transmission method, transmitting device and the receiving system that are used for repeated link in a kind of mobile communication system that 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 transmission signals, but on the other hand, high-frequency will be brought big path loss, and then influence the network coverage.In order to improve the network coverage effectively, 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) dual mode and enhanced base station (eNB are arranged, evloved Node B) communication, a kind of is direct communication mode among traditional mobile network, another kind is that the relay services by RN realizes communicating by letter of UE and eNB, as shown in Figure 1.Among Fig. 1, the link between eNB and the RN is called back haul link, and the link between RN and its UE that serves is called access link, and the UE that accepts to serve by RN under the RN administration is called R-UE, and R-UE is RN subordinate's user terminal.

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

The form of the MAC PDU of LTE system as shown in Figure 2, among Fig. 2, MAC PDU is divided into MAC PDU head and MAC PDU pay(useful) load two parts on the whole, in a MAC PDU, head part is accepted effective loading section thereafter preceding.Comprise a plurality of MAC PDU heads in the MAC PDU head, pay(useful) load partly 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 preceding, be MAC SDU afterwards, and possible byte of padding.Each MAC PDU head is MAC SDU, MACCE in the corresponding pay(useful) load or byte of padding respectively, the relevant information of indicating pairing MAC SDU or MAC CE, or indication byte of padding.Each MAC PDU head in MAC PDU head put in order with pay(useful) load in MACCE, MAC SDU and byte of padding put in order corresponding one by one.

MAC PDU head is divided into two classes, is divided into a son form that is used for MAC SDU and a son form that is used for MAC CE or byte of padding.Wherein, a son form that is used for MAC SDU as shown in Figure 3 and Figure 4, Fig. 3 and Fig. 4 are respectively among the MAC PDU that transmits between existing eNB and the UE structural representation corresponding to the son head of MAC SDU, a son form is that the form of delegation is represented with 1 byte, represent byte with the Oct in scheming, the Oct of other figure also is the implication here herein, below does not do and gives unnecessary details; And the L zone among Fig. 3 is 7 bits (bit), and the L zone among Fig. 4 is 15bit.A son form that is used for MAC CE or byte of padding as shown in Figure 5, Fig. 5 among the MAC PDU that transmits between existing eNB and the UE corresponding to the structural representation of the son head of MAC CE or byte of padding.

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

R-1bit is to keep the position, does not have the indication implication;

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

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

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

L-7bit or 15bit, the message length that is used to indicate pairing MAC SDU.

It may be noted that and be: the son head that is used for MAC SDU is represented 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; The son head that is used for MAC CE or byte of padding is represented 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 pairing son head of MAC CE, do not need the L zone of indicating length, further do not need to indicate the F indicating bit of L zone length yet.

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

In relay system, MAC SDU between RN and R-UE on the access link and the transmission of MAC CE can follow the MAC PDU form that adopts 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 the RN fully, 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 the back haul link then may comprise U-MAC SDU, RN and R-MAC SDU between the eNB and the R-MAC CE of a plurality of R-UE, if adopt above-mentioned existing MAC PDU form, then can there be the problem of the information that can't comprise and distinguish indication RN and a plurality of R-UE simultaneously.On the other hand, if on the back haul link with U-MAC SDU and R-MAC SDU between RN and the eNB and the R-MAC CE of a plurality of UE of RN subordinate, if the form by above-mentioned existing MAC PDU carries out the individual packages transmission respectively, the problem that then can exist the resource of back haul link effectively not utilized can not be carried out the efficient scheduling transmission according to each UE's or RN's demand simultaneously.In a word, existing this problem aspect two all can have influence on the transmission performance on the repeated link on the back haul link of relay system.At present, at above this two aspects problem, solution is not effectively proposed as yet, to improve the transmission performance on the repeated link.

Summary of the invention

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

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

A kind of transmission method that is used for repeated link, this 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 the relay station (RN) with after being under the jurisdiction of MAC service data unit (MAC SDU) encapsulation of each node, transmission R-MAC PDU on the back haul link between described eNB and the described RN;

Wherein, each node under the MAC SDU that encapsulates 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 with 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, described node indication information is specifically indicated the node identification (Node ID) of the affiliated node of each MAC SDU.

Wherein, be packaged with at least in the 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, further also be packaged with byte of padding in the 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: the sub-head that comprises indication MAC SDU in the R-MAC PDU head; A MAC SDU head correspondence is indicated a MAC SDU, comprises the Node ID of the affiliated node of indicated MAC SDU in the MAC SDU head;

Also comprise in the described R-MAC PDU head: the son head of indication R-MAC CE and optionally indicate the sub-head of byte of padding; R-MAC CE of a corresponding indication 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,

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

During the corresponding indication of current MAC SDU head U-MAC SDU, in the 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: comprise the sub-head of S in the R-MAC PDU head; The indication of a S head belongs to the pairing one or more sub-heads of one or more MAC SDU of same node point;

Also comprise in the described R-MAC PDU head: the son head of the son head of indication R-MAC CE, indication MAC SDU and optionally indicate the sub-head of byte of padding; MAC SDU of a corresponding indication of MAC SDU head, R-MAC CE of a corresponding indication of R-MAC CE head.

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

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

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

The encapsulation of included content is followed successively by in proper order in the described pay(useful) load: one or more R-MAC CE are preceding; Be one or more MAC SDU subsequently; Be optional byte of padding at last;

The encapsulation of described son head is followed successively by in proper order: one or more son heads of corresponding indication R-MAC CE are preceding; Be the sub-heads of one or more S subsequently; Next be the one or more sub-head that encapsulates corresponding indication MACSDU according to the order of S head successively; Be the sub-head of optionally corresponding indication byte of padding at last.

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

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

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

Wherein, in the 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 was RN, in the current S head, Node ID specifically indicated RN ID;

When a described current S corresponding instructs node was R-UE, in the current S head, Node ID specifically indicated R-UE ID.

Wherein, described node indication information is specially: the sub-head that comprises indication MAC SDU in the R-MAC PDU head; MAC SDU of a corresponding indication of MAC SDU head adopts the D indicating bit in the MAC SDU head, indicates a current son pairing MAC SDU and the pairing 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 indication of son head institute of current MAC SDU when the D indicating bit and do not belong to same node with the MAC SDU of the corresponding indication 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 indication of son head institute of the current MAC SDU of the concrete indication of D indicating bit belongs to same node with the MAC SDU of the corresponding indication of last height head, the form of current MAC SDU employing is specially R/D/E/LCID/F/L.

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

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

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

Wherein, corresponding indication belongs in one or more MAC SDU heads of same node, comprises node identification information in first MAC SDU head, indication Node ID; In the MAC SDU head that belongs to same node that order is adjacent, then do not need to indicate once more Node ID thereafter.

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

The encapsulation of described son head is followed successively by in proper order: one or more son heads of corresponding indication R-MAC CE are preceding; Be the one or more sub-head of corresponding indication MAC SDU subsequently; Be the sub-head of optionally corresponding indication byte of padding at last.

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

A kind of transmitting device that is used for repeated link, this device comprises: indication information generation unit, encapsulation unit and transmission unit; Wherein,

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

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

Transmission unit is used for the described R-MACPDU of transmission on the back haul link between described eNB and the described RN.

Wherein, described encapsulation unit is further used for being packaged with at least 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 further also being 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 comprising the Node ID of respective nodes, as described node indication information in the son head of described indication MAC SDU.

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

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

During the corresponding indication 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 the R-MAC PDU head, as described node indication information;

Wherein, the indication 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 sub of the S of node indication information;

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

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; When respective nodes was RN, NodeID was RN ID, and when respective nodes was R-UE, Node ID was 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 comprising the MAC SDU head of 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 the D indicating bit did not belong to same node with the MAC SDU of the corresponding indication of last height head, the form of employing was specially R/D/E/LCID/F/L/Node ID; Wherein,

Node ID specifically indicates: the node identification information of respective nodes; When respective nodes was RN, NodeID was RN ID, and when respective nodes was R-UE, Node ID was 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 the D indicating bit belonged to same node with the MAC SDU of the corresponding indication of last height head, the form of employing was specially R/D/E/LCID/F/L.

A kind of receiving system that is used for repeated link, this device comprises: indication information resolution unit, decapsulation unit; Wherein,

The indication information resolution unit, the node indication information that is used for R-MAC PDU head is encapsulated is resolved, and analysis result is passed to decapsulation unit; Wherein, described node indication information is the node indication information to node under the MAC SDU that encapsulates in the 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 the RN and the MAC SDU that is under the jurisdiction of each node are carried out decapsulation, obtain R-MAC CE and the MAC SDU that belongs to each node in the described pay(useful) load.

Wherein, described decapsulation unit is further used for parsing packaged information in the R-MAC PDU pay(useful) load, comprises at least: 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 the node indication information and is: the Node ID of the respective nodes that is comprised in the son head of described indication 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, the Node ID of node under the corresponding MAC SDU of acquisition from described MAC SDU head; And the Node ID that will resolve acquisition passes to described decapsulation unit.

Wherein, described indication information resolution unit is further used for parsing the node indication information and is: the sub-head of S that is comprised in R-MAC PDU head; Wherein, the indication 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 the E indicating bit and specifically indicates: next be another S head or MAC SDU head after the current S 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 then Node ID is RN ID; Perhaps, described indication information resolution unit is further used for NodeID and specifically indicates: respective nodes is R-UE, and then Node ID is R-UE ID.

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

Wherein, described indication information resolution unit is further used for parsing the indication 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 indication of last height head; The form of then 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 indication 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 indication of last height head; The form of then current MAC SDU head is specially: R/D/E/LCID/F/L.

Wherein, the form that comprises the MAC SDU head of node indication information is specially: under 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; Perhaps, described indication information resolution unit is further used for parsing Node ID and specifically indicates: R-UE ID.

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

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

Description of 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 a R-MAC PDU structural representation;

Fig. 8 is sub the structural representation of the present invention program one MAC SDU;

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

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

Figure 11 is sub the structural representation again of the present invention program one MAC SDU;

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

Figure 16 is sub the structural representation of the present invention program three MAC SDU;

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

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

Figure 19 is sub the structural representation again of the present invention program three MAC SDU;

A structural representation that does not comprise Node ID zone in the son head of Figure 20 for the present invention program three MAC SDU;

Another structural representation that does not comprise Node ID zone in the son head of Figure 21 for the present invention program three MAC SDU;

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

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

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

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

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

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

Figure 28 is that one of apparatus of the present invention are formed structural representation;

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, and to R-MAC CE waiting for transmission between eNB and the RN with after being under the jurisdiction of the MAC SDU encapsulation of each node, transmission R-MAC PDU on the back haul link between eNB and the RN.Wherein, each node under the MAC SDU that encapsulates in to pay(useful) load by encapsulation node indication information in R-MAC PDU head is indicated respectively.

Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme.

As shown in Figure 6, a kind of transmission method that is used for repeated link, this method comprises:

Step 101, employing R-MAC PDU encapsulate MAC SDU and the R-MACCE that transmits between eNB and the 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 that encapsulates in to pay(useful) load by the node indication information that encapsulates in R-MAC CPDU head is indicated respectively.The node here comprises: RN and R-UE.

Step 102, encapsulation back be transmission R-MAC PDU on the back haul link between eNB and the RN.

At by the technical scheme that step 101～step 102 constituted, R-MAC CE is the MAC control element relevant with 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 indication information is specifically indicated the node identification (NodeID) of the affiliated node of each MAC SDU.Wherein, when MAC SDU belonged to RN, the node indication information was specifically indicated: the RN ID of RN under the MAC SDU, and promptly Node ID is RN ID at this moment; When MAC SDU belonged to R-UE, the node indication information was specifically indicated: the R-UE ID of R-UE under the MAC SDU, promptly Node ID is R-UE ID at this moment.

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

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

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

Also comprise in the R-MAC PDU head: the son head of indication R-MAC CE and optionally indicate the sub-head of byte of padding; R-MAC CE of a corresponding indication 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, during the corresponding indication of current MAC SDU head R-MAC SDU, in the current MAC SDU head, Node ID specifically indicates RN ID; During the corresponding indication of current MAC SDU head U-MAC SDU, in the 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 sign 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 among the R-MAC PDU has a plurality of.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.The encapsulation of included content order is corresponding one by one with the encapsulation order of corresponding son head in the pay(useful) load.

Wherein, the encapsulation of included content is followed successively by in proper order in the pay(useful) load: one or more R-MAC CE are preceding; Be one or more MAC SDU subsequently; Be optional byte of padding at last; Correspondingly, the encapsulation of son head is followed successively by in proper order: one or more son heads of corresponding indication R-MAC CE are preceding; Be the one or more sub-head of corresponding indication MAC SDU subsequently; Be the sub-head of optionally corresponding indication byte of padding at last.

Second kind of situation: the node indication information is specially: comprise the sub-head of S in the R-MAC PDU head; The indication of a S head belongs to the pairing one or more sub-heads of one or more MAC SDU of same node point.

At this moment, also comprise in the R-MAC PDU head: the son head of the son head of indication R-MAC CE, indication MAC SDU and optionally indicate the sub-head of byte of padding; MAC SDU of a corresponding indication of MAC SDU head, R-MAC CE of a corresponding indication of R-MAC CE head.

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

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

Here, the encapsulation of included content order is corresponding one by one with the encapsulation order of corresponding son head in the pay(useful) load.Wherein, the encapsulation of included content is followed successively by in proper order in the pay(useful) load: one or more R-MAC CE are preceding; Be one or more MAC SDU subsequently; Be optional byte of padding at last.

The encapsulation of son head is followed successively by in proper order: one or more son heads of corresponding indication R-MAC CE are preceding; Be the sub-heads of one or more S subsequently; Next be the one or more sub-head that encapsulates corresponding indication MACSDU according to the order of S head successively; Be the sub-head of optionally corresponding indication byte of padding at last.

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

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

Here, during the corresponding indication of current S head RN, Node ID specifically indicates RN ID; During correspondence indication R-UE, No de ID specifically indicates R-UE ID.

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

The third situation: the node indication information is specially: the sub-head that comprises indication MAC SDU in the R-MAC PDU head; MAC SDU of a corresponding indication of MAC SDU head adopts the D indicating bit in the MAC SDU head, indicates a current son pairing MAC SDU and the pairing 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 RD/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,

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

Here, in the R-MAC PDU head, one or more MAC SDU heads that corresponding indication belongs to same node are in proper order adjacent successively.Wherein, corresponding indication belongs in one or more MAC SDU heads of same node, comprises node identification information in first MAC SDU head, indication Node ID; In the MAC SDU head that belongs to same node that order is adjacent, then do not need to indicate once more Node ID thereafter.

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 satisfies the R-UE demand, improves the effect of back haul link resource utilization.Below concrete respectively the elaboration.

Scheme one:

As shown in Figure 7, R-MAC PDU is made of R-MAC PDU head and R-MAC PDU pay(useful) load two parts, and in a R-MAC PDU, head part is accepted effective loading section thereafter preceding.Comprise a plurality of sub-heads in the R-MACPDU head, pay(useful) load partly 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.R-MAC CE is one or more MAC SDU preceding afterwards in the pay(useful) load, 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 pairing MAC SDU or R-MAC CE, or the byte of padding of indication filling.Each R-MAC PDU head in R-MAC PDU head put in order with pay(useful) load in R-MAC CE and MAC SDU and possible byte of padding put in order corresponding one by one.

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

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

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

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

R-1bit keeps the position, does not have the indication implication;

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

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

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

L-7bit or 15bit, the message length that is used to indicate pairing MAC SDU;

Node ID-8bit or 16bit; And, when the corresponding R-MAC SDU of this son, Node ID indication RN ID; When the corresponding U-MAC SDU of this son, Node ID indication R-UE ID; Wherein R-UEID can be the C-RNTI of R-UE, also can be other can be between eNB and RN the ID of unique identification R-UE.

The encapsulation of each son head is in proper order in the R-MAC PDU head: one or more sub corresponding to R-MAC CE is thereafter the one or more sub-head corresponding to MAC SDU preceding, is the sub-head relevant with byte of padding that possible exist at last.

The pay(useful) load of R-MAC PDU partly 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.The encapsulation of each R-MAC CE, MAC SDU or byte of padding is in proper order with each son head order is corresponding one by one accordingly in the R-MAC PDU head in the pay(useful) load part.

Wherein, the R-MAC CE in the R-MAC PDU pay(useful) load can comprise in the following information one or multinomial: buffer status report, C-RNTI indication, the indication of discontinuous transmission configuration, competition solve that indication is adjusted in sign indication, time in advance, power control is indicated.

MAC SDU in the R-MAC PDU pay(useful) load can have one or more, can belong to RN, also can belong to different R-UE respectively; 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.In the composition mode of concrete MAC SDU and the LTE system between eNB and UE the mode of MAD SDU consistent, the corresponding id information that contains in the corresponding son.

In addition, according to regulation to R-MAC PDU length, after the order encapsulation of finishing 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, then need in R-MAC PDU, to fill the byte of padding of certain byte, up to R-MACPDU length length up to specification.Partially filled last in R-MAC PDU pay(useful) load of byte of padding, and be that byte of padding adds in R-MAC PDU head and indicates sub-head accordingly, sub-head last in the R-MAC PDU head part become.

Scheme two:

As shown in figure 12, R-MAC PDU is made of R-MAC PDU head and R-MAC PDU pay(useful) load two parts, and in a R-MAC PDU, head part is accepted effective loading section thereafter preceding.Comprise a plurality of R-MAC PDU heads in the R-MACPDU head, pay(useful) load partly 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.R-MAC CE is MAC SDU preceding afterwards in the pay(useful) load, and possible byte of padding.

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

S head is used to indicate the quantity and the node corresponding sign 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 among the present invention program two the R-MAC PDU, and NodeID zone wherein takies 16bit; Figure 14 is the another kind of structural representation of S head among the present invention program two the R-MAC PDU, and Node ID zone wherein takies 8bit.

Be used to indicate the son head of MAC SDU can take 2 or 3 bytes, 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 to take 1 byte, structure is R/R/E/LCID, as shown in Figure 5.

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

R-1bit keeps the position, does not have the indication implication;

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

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

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

L-7bit or 15bit, the message length that is used to indicate pairing MAC SDU;

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

Encapsulation of each son head is in proper order in the R-MAC PDU head: corresponding to one or more son heads of R-MAC CE preceding, be the sub-heads of one or more S thereafter, next the order according to S head encapsulates the corresponding sub-head of pairing one or more MAC SDU successively, is the possible sub-head relevant with byte of padding at last.

The pay(useful) load of R-MAC PDU partly 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.The encapsulation of each R-MAC CE, MAC SDU or byte of padding is in proper order with each son head order is corresponding one by one accordingly in the R-MAC PDU head in the pay(useful) load part.When a plurality of MAC SDU that belongs to same R-UE was arranged among this R-MAC PDU, these a plurality of MAC SDU linked successively by corresponding son head order.And between each the group 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 the R-MAC PDU pay(useful) load can comprise in the following information one or multinomial: buffer status report, the indication of discontinuous transmission configuration, C-RNTI indication, competition solve that indication is adjusted in sign indication, time in advance, power control is indicated.

MAC SDU in the R-MAC PDU pay(useful) load can have one or more, can belong to RN, also can belong to different R-UE respectively; 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.In the composition mode of concrete MAC SDU and the LTE system between eNB and UE the mode of MAD SDU consistent.

According to regulation to R-MAC PDU length, after the order encapsulation of finishing R-MAC PDU head part and corresponding M AC SDU and R-MAC CE, if the length of R-MAC PDU does not reach corresponding setting, then need in R-MAC PDU, to fill byte of padding, up to R-MAC PDU length length up to specification.The partially filled pay(useful) load at R-MAC PDU of byte of padding last, and be that byte of padding adds the sub-head of corresponding indication in R-MAC PDU head, sub-head last in the R-MAC PDU head part become.

Scheme three:

As shown in figure 15, R-MAC PDU is made of R-MAC PDU head and R-MAC PDU pay(useful) load two parts, and in a R-MAC PDU, head part is accepted effective loading section thereafter preceding.Comprise a plurality of R-MAC PDU heads in the R-MACPDU head, pay(useful) load partly 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.R-MAC CE is MAC SDU and possible byte of padding preceding afterwards in the pay(useful) load.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 pairing MAC SDU or R-MAC CE, or the byte of padding of indication filling.Each R-MAC PDU head in R-MAC PDU head put in order with pay(useful) load in R-MAC CE and MAC SDU and possible byte of padding put in order corresponding one by one.

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

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

R-1bit keeps the position, does not have the indication implication;

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

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

L-7bit or 15bit, the message length that is used to indicate pairing MAC SDU;

Node ID-8bit or 16bit; And, when the corresponding R-MAC SDU of this son, Node ID indication RN ID; When the corresponding U-MAC SDU of this son, Node ID indication R-UE ID; Wherein, R-UEID can be the C-RNTI of R-UE, also can be other can be between eNB and RN the ID of unique identification R-UE.

The pay(useful) load of R-MAC PDU partly 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.The encapsulation of each R-MAC CE, MAC SDU or byte of padding is in proper order with each son head order is corresponding one by one accordingly in the R-MAC PDU head in the pay(useful) load part.

MAC SDU in the R-MAC PDU pay(useful) load can have one or more, can belong to RN, also can belong to different R-UE respectively; 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 a plurality of MAC SDU of same R-UE adjacent successively.In the composition mode of concrete MAC SDU and the LTE system between eNB and UE the mode of MAD SDU consistent.When a MAC SDU belongs to RN or belongs to first MAC SDU of certain R-UE among the R-MAC PDU for this reason, the UE id information of indication RN ID or R-UE in the corresponding son head, adjacent thereafter MAC SDU does not then need once more the instructs node sign if belong to same node point.

In addition, according to regulation to R-MAC PDU length, after the order encapsulation of finishing 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, then need in R-MAC PDU, to fill the byte of padding of certain byte number, up to R-MACPDU length length up to specification.Partially filled last in R-MAC PDU pay(useful) load of byte of padding, and be that byte of padding adds in R-MAC PDU head and indicates sub-head accordingly, sub-head last in the R-MAC PDU head part become.

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 a plurality of R-UE, and the MAC SDU quantity of each R-UE is not for a long time, because scheme one is to carry out node identification indication with Node ID at each MAC SDU in corresponding son head, therefore, under this system requirements, the R-MACPDU form of employing scheme one is comparatively suitable, can indicate the MAC SDU of each node that encapsulates among the R-MAC PDU flexibly effectively.And work as system requirements be: a plurality of MAC SDU that encapsulate in R-MAC PDU belong to a spot of R-UE, the MAC SDU quantity of each R-UE more for a long time, because scheme two and scheme three are that the MAC SDU that belongs to same node point is unified indication, therefore, under this system requirements, the R-MAC PDU form of employing scheme two and scheme three is more suitable, can in effective indication R-MAC PDU in the related content, further reduce the indication expense.

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

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

Example 1:

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

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

3 sub-heads of the R/R/E/LCID corresponding to R-MAC CE correspond respectively to pay(useful) load R-MAC CE 1 to R-MAC CE 3 partly, 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 1 MACSDU that eNB is transferred to RN.Wherein, adopted the C-RNTI of corresponding R-UE to be UE ID sign, RN ID also adopts 16bit, is filled in the Node ID zone of Fig. 8 or a son form shown in Figure 9.

In the R-MAC PDU pay(useful) load in each R-MAC CE, MAC SDU and the R-MAC PDU head corresponding son head order corresponding one by one.The Node id information that comprises in each MAC SDU head has promptly indicated corresponding M AC SDU to belong to RN or certain R-UE.

Simultaneously, the R-MAC PDU length length up to specification owing to encapsulating after finishing need not to fill, and pay(useful) load does not comprise byte of padding among the R-MAC PDU, and corresponding header does not comprise the sub-head of indicating byte of padding in dividing yet.

Example 2:

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

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

2 sub-heads of the R/R/E/LCID corresponding to R-MAC CE correspond respectively to pay(useful) load R-MAC CE 1 to R-MAC CE 3 partly, 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, adopted other to be sign by UE ID of unique identification R-UE between eNB and RN, sign ID takies 8bit, and RN ID also takies 8bit, a son form such as Figure 10 or shown in Figure 11.

Simultaneously, because the R-MAC PDU length after encapsulation is finished 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 then, and being used to indicate the sub-head of R/R/E/LCID of byte of padding in the last interpolation that corresponding header is divided, a son form is as shown in Figure 5.

Example 3:

ENB is encapsulated as a R-MAC PDU and transmits to RN on repeated link belonging to 6 MAC SDU of 2 R-UE and 3 R-MAC CE information under the RN, two R-UE are expressed as R-UE 1 and R-UE 2 respectively, three R-MAC CE are expressed as R-MAC CE1 to R-MAC CE 3 respectively, 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 that proposes according to the present invention obtains R-MAC PDU, as shown in figure 24.

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

2 sub-heads of S, corresponding R-UE 1 of difference and R-UE 2, the S head of R-UE 1 has indicated R-UE 1 to contain 2 MAC SDU heads in this R-MAC PDU head preceding, and the UE ID of indication R-UE; Be corresponding to the sub-head of the S of 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, adopted the C-RNTI of corresponding R-UE to be UE ID sign, 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, a son form such as Fig. 3 or shown in Figure 4.Wherein, according to the order of S head, preceding, next be 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 the R-MAC PDU pay(useful) load, the encapsulation of MAC SDU are in proper order with each son head order is corresponding one by one accordingly in the R-MACPDU head.The MAC SDU that belongs to same node point is adjacent in turn.

Example 4:

RN is encapsulated as a R-MAC PDU with 6 MAC SDU of 2 R-UE of subordinate and 2 R-MAC CE information and transmits to eNB on repeated link, two R-UE are expressed as R-UE1 and R-UE 2 respectively, two R-MA CE are expressed as R-MAC CE1 and R-MAC CE 2 respectively, 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 that proposes according to the present invention obtains R-MAC PDU, as shown in figure 25.

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

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

2 sub-heads of S, corresponding R-UE 1 of difference and R-UE 2, the S head of R-UE 1 has indicated R-UE 1 to contain 3 MAC SDU heads in this R-MAC PDU head preceding, and the UE ID of indication R-UE; Be corresponding to the sub-head of the S of 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, adopted other to be sign by UE ID of unique identification R-UE between eNB and RN, 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, a son form such as Fig. 3 or shown in Figure 4.Wherein, according to the order of S head, preceding, next be 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 the R-MAC PDU pay(useful) load, the encapsulation of MAC SDU are in proper order with each son head order is corresponding one by one accordingly in the R-MACPDU head.The MAC SDU that belongs to same node point is adjacent in turn.

Example 5:

ENB has 2 and 3 R-MAC CE information to be encapsulated as a R-MAC PDU to transmit to RN on repeated link with belonging to totally 4 of the MAC SDU of 2 R-UE, the MAC SDU that belongs to RN under the RN, two R-UE are expressed as R-UE 1 and R-UE 2 respectively, three R-MAC CE are expressed as R-MAC CE1 to R-MAC CE 3 respectively, 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 that proposes according to the present invention, obtain R-MAC PDU, as shown in figure 26.

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

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

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

Be 2 sub-heads corresponding to the MAC PDU of RN thereafter, the son head that first indication belongs to the MACSDU of RN adopts RD/E/LCID/F/L/Node ID form, D indicating bit value wherein is 1, indicates in this son head to contain the Node id information id information of Node ID zone indication RN.Thereafter another indication is corresponding to the son employing RD/E/LCID/F/L form of the MAC SDU of RN, and D indicating bit value wherein is 0, and it is identical to represent that affiliated node of the corresponding MAC SDU of this son head and last height head are indicated.

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

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

Example 6:

RN is encapsulated as a R-MAC SDU with 6 MAC SDU of 2 R-UE of subordinate and 1 R-MAC CE information and transmits to eNB on repeated link, two R-UE are expressed as R-UE1 and R-UE 2 respectively, 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 that proposes according to the present invention, obtain R-MAC PDU, as shown in figure 27.

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

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

6 R/D/E/LCID/F/L or R/D/E/LCID/F/L/Node ID heads corresponding to MAC SDU 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 preceding, the son head of the MAC SDU of first indication R-UE 1 adopts R/D/E/LCID/F/L/Node ID form, D indicating bit value wherein is 1, indicate in this son head and contain the UE id information, thereafter the son of the MAC SDU of 2 indication R-UE 1 an in addition employing R/D/E/LCID/F/L form, D indicating bit value wherein is 0, it is identical to represent that affiliated node of the corresponding MAC SDU of this son head and last height head are indicated.

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

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

Device embodiment:

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

Here, encapsulation unit is further used for being packaged with at least 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 further also being 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.

Because the node indication information difference that adopts, therefore, the specific implementation of indication information generating unit is different in the device, below sets forth respectively.

First kind of specific implementation: the indication information generation unit is further used for comprising the Node ID of respective nodes, as the node indication information in the son head of indication MAC SDU.

At this moment, MAC SDU of the corresponding indication of son head of a MAC SDU; Also comprise in the R-MAC PDU head: the son head of indication R-MAC CE and optionally indicate the sub-head of byte of padding.

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

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

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

At this moment, the indication of a S head belongs to one or more MAC SDU of same node point; Also comprise in the R-MAC PDU head: the son head of the son head of indication R-MAC CE, indication MAC SDU and optionally indicate the sub-head of byte of padding.

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

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

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

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

The third specific implementation: the 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 the node indication information.

At this moment, comprise the D indicating bit in the MAC SDU head, indicate a current son pairing MAC SDU and the pairing MAC SDU of last height head whether to belong to same node; Also comprise in the R-MAC PDU head: the son head of indication R-MAC CE and optionally indicate the sub-head of byte of padding.

Here, the indication information generation unit, be further used for comprising the 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 R-MAC CE head that adopts or byte of padding head is specially: R/R/E/LCID.

Wherein, in the current MAC SDU head, when the D indicating bit indicated the MAC SDU of the corresponding indication of current MAC SDU head institute not belong to same node with the MAC SDU of the corresponding indication of last height head, the form of current sub employing was specially R/D/E/LCID/F/L/Node ID.Wherein, Node ID specifically indicates: the node identification information of respective nodes; When respective nodes was RN, Node ID was RN ID, and when respective nodes was R-UE, Node ID was R-UE ID.

In the current MAC SDU head, when the D indicating bit indicated the MAC SDU of the corresponding indication of current MAC SDU head institute to belong to same node with the MAC SDU of the corresponding indication of last height head, the form of current sub employing was specially R/D/E/LCID/F/L.

Device embodiment:

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

Here, decapsulation unit is further used for parsing packaged information in the R-MAC PDU pay(useful) load, comprises at least: 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.

Because the node indication information difference that adopts, therefore, the specific implementation of indication information analysis unit and decapsulation unit is different in the device, below sets forth respectively.

First kind of specific implementation: the indication information resolution unit is further used for parsing the node indication information and is: the Node ID of the respective nodes that is comprised in the son head of indication MAC SDU.

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

Here, the indication information resolution unit further will be resolved the node indication information that obtains and be passed to described decapsulation unit.

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

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

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

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

Here, the indication information resolution unit further will be resolved the node indication information that obtains and be passed to decapsulation unit.

Here, decapsulation unit, the Node id information of node carries out decapsulation to the one or more MAC SDU that comprise in the pay(useful) load under further reaching according to the MAC SDU quantity to belonging to same node that obtains from the indication information resolution unit.

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

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

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

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

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

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

Claims

1. transmission method that is used for repeated link, it is characterized in that, this 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 the relay station (RN) with after being under the jurisdiction of MAC service data unit (MAC SDU) encapsulation of each node, transmission R-MAC PDU on the back haul link between described eNB and the described RN;

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

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

4. method according to claim 2 is characterized in that, is packaged with at least in the R-MAC PDU pay(useful) load: 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, further also is packaged with byte of padding in the 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: the sub-head that comprises indication MAC SDU in the R-MAC PDU head; A MAC SDU head correspondence is indicated a MAC SDU, comprises the NodeID of the affiliated node of indicated MAC SDU in the 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: comprise the sub-head of S in the R-MAC PDU head; The indication of a S head belongs to the pairing 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 to the correspondence that comprises in the described R-MAC PDU head indication belong to one or more MAC SDU of same node point a son quantity, and corresponding Node ID unify indication.

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

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

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

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

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

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

18. method according to claim 15 is characterized in that, in the described R-MAC PDU head, one or more MAC SDU heads that corresponding indication belongs to same node are in proper order adjacent successively;

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

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

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

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

23. device according to claim 22 is characterized in that, described encapsulation unit is further used for further also being 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. device according to claim 21 is characterized in that, described indication information generation unit is further used for comprising the Node ID of respective nodes, as described node indication information in the son head of described indication MAC SDU.

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

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

27. device 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 sub of the S of node indication information;

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

30. a receiving system that is used for repeated link is characterized in that, this device comprises: indication information resolution unit, decapsulation unit; Wherein,

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

32. device 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. device according to claim 30 is characterized in that, described indication information resolution unit is further used for parsing the node indication information and is: the Node ID of the respective nodes that is comprised in the son head of described indication MAC SDU.

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

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

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

38. according to the described device of claim 37, it is characterized in that, described indication information resolution unit is further used for parsing the indication 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 indication of last height head; The form of then current MAC SDU head is specially: R/D/E/LCID/F/L/Node ID;

39. according to the described device of claim 38, it is characterized in that, the form that comprises the MACSDU head of node indication information is specially: under the situation of RD/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; Perhaps, described indication information resolution unit is further used for parsing Node ID and specifically indicates: R-UE ID.