CN102369784B - Method, communication system and protocol entity for improving performance of relay network system - Google Patents
Method, communication system and protocol entity for improving performance of relay network system Download PDFInfo
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Abstract
A method, communication system and protocol entity for improving the performance of relay network system are disclosed by embodiments of the present invention. The method comprises: relay radio link control (RRLC) layer entity receives the packets transmitted by at least two packet data convergence protocol (PDCP) layer entities; RRLC entity aggregates the packets; and RRLC entity transmits the aggregated packets to the radio link control (RLC) layer entity, thereby enabling the aggregated packets to be transmitted to the receiving device via RLC layer, MAC layer, and L1 layer. Utilizing the solution provided by embodiments of the present invention, the system performance of the relay network system is enhanced by making full use of the transmission resource over the wireless link from relay station to base station.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method, communication system and protocol entity that improves relay network system performance.
Background technology
Because IMT-Advanced (international mobile communication is senior) system needs very high power system capacity, higher frequency range provides the large bandwidth spectrum that meets its capacity for IMT-Advanced system, and the path loss of high like this frequency range and penetration loss are all larger, make base station at cell edge, be difficult to the covering having realized, therefore for meeting the capacity requirement of IMT-Advanced, 3GPP (3rd Generation Partnership Project, third generation partner program) the LTE-Advanced technology that standardization body proposes is now just studied relaying (Relay) technology as a kind of candidate technologies of improving power system capacity and covering.
In legacy network, the wireless connections between base station and terminal are direct wireless connections, namely the network of single-hop.And relaying technique is to increase one or more relay stations between base station and terminal, the wireless signal of being responsible for that by this relay station base station is sent is done one or many signal and is processed or directly forward, until base station transmitted signal is transferred to terminal.The better simply double bounce relaying of take is example, exactly base station-terminal wireless link is divided into base station and arrives two wireless links of terminal to relay station and relay station, thereby have an opportunity a second-rate link to replace with two good links of quality, to obtain higher link capacity and better to cover.3GPP requires LTE-Advanced network to have good backwards compatibility for LTE terminal, requires under the prerequisite of any behavioral trait that does not change existing LTE terminal, allows LTE terminal to obtain access service from relay station.This has just determined that this link of relay station-terminal can support the interface between base station and terminal, i.e. Uu interface in former LTE network.And for relay station to the interface adopting on this wireless links of base station, do not have at present unified regulation, in prior art, be generally directly to adopt Uu interface.
According to the relevant criterion of 3GPP agreement, the protocol stack of Uu interface user plane is divided into four protocol sublayers, respectively: PDCP (Packet Data Convergence Protocol, packet data convergence protocol) layer, RLC (Radio Link Control, wireless chain control layer) layer, MAC (Medium Access Control, media access control layer) layer and L1 (layer 1, i.e. physical layer) layer.
In the prior art, a PDCP entity in the corresponding PDCP layer of a high-rise radio bearer, a RLC entity in the corresponding rlc layer of described PDCP entity, that is to say that PDCP entity and RLC entity are one to one.Take by relay station is example to the uplink communication process of base station, and during a packet on receiving high-rise radio bearer, the some PDCP entities in relay station are just exported a PDCP protocol Data Unit, i.e. PDCP PDU.And RLC entity will again be cut apart with polymerization and export RLC PDU the PDCP PDU receiving.The RLC PDU that MAC layer can produce all RLC entities carry out United Dispatching, but only from the packet of same terminal, just can be multiplexed on same transmission channel, then through L1 layer, sends to base station.Base station receives after data by L1 layer, at MAC layer, rlc layer and PDCP layer, packet is carried out to the anti-operation with respect to relay station successively, thereby completes the uplink receiving process of data.
In realizing process of the present invention, inventor finds that in prior art, at least there are the following problems:
According to existing data transfer mode, the data that transmit to every transmission channel on the wireless link of base station at relay station are only limited to the data of some terminals.And due to the restriction of limited transmission time slot resource, with respect to the transmission channel between former terminal to base station, relay station wants large many to the capacity of the transmission channel between base station.Therefore, if still according to the data of existing transmission means transmission terminal, will cause the huge waste of Radio Resource, and then make relay station to base station link, become the transmission bottleneck of system.
Summary of the invention
The embodiment of the present invention provides a kind of method, communication system and protocol entity that improves relay network system performance, to optimize the systematic function of relay network system.
The embodiment of the present invention adopts following technical scheme:
A method that improves relay network system performance, comprising:
Service convergence layer RRLC entity receives the packet being sent by least two packet data convergence protocol PDCP entities;
RRLC entity converges operation to packet;
By the Packet Generation after converging operation to wireless chain control layer RLC entity, so that the packet after converging operation is transferred to receiving equipment through wireless chain control layer, media access control layer, L1 layer.
A protocol entity, comprising:
Receiving element, for receiving the packet by least two packet data convergence protocol PDCP entities transmissions of relay station/base station side;
Converge unit, for the packet being received by receiving element is converged to operation;
Transmitting element, for by by converging the Packet Generation after converging operation that unit the receives wireless chain control layer RLC entity to relay station/base station side, so that the packet after converging operation is transferred to base station/relay station through wireless chain control layer, media access control layer, L1 layer.
A communication system, comprising: at least two packet data convergence protocol PDCP entities, service convergence layer RRLC entity, and wireless chain control layer RLC entity; Wherein PDCP entity is positioned at packet data convergence protocol, and RRLC entity is positioned at service convergence layer, and RLC entity is positioned at wireless chain control layer, and service convergence layer is between packet data convergence protocol and wireless chain control layer;
PDCP entity, for sending from high-rise packet to RRLC entity;
RRLC entity, converges operation for the packet that at least two PDCP entities are sent, and by the Packet Generation after converging operation to RLC entity;
RLC entity, for the cut apart/converging operationJu Hecaozuo of the packet after converging operation to receiving.
The embodiment of the present invention improves method, communication system and the protocol entity of relay network system performance, by the RRLC entity by increasing newly by converging operation, the packet of the radio bearer of at least two terminals by a transmission channel, has been overcome in prior art to the defect of the waste Radio Resource that the packet by a corresponding radio bearer of terminal of a transmission channel causes.Thereby the embodiment of the present invention takes full advantage of relay station to the transfer resource on this wireless links of base station, thereby optimize the systematic function of relay network system.
A method that improves relay network system performance, comprising:
Service convergence layer RRLC entity receives the packet being sent by transmitting apparatus, and wherein packet is transferred to service convergence layer via L1 layer, media access control layer, wireless chain control layer;
RRLC entity carries out solution to packet and converges operation;
By the Packet Generation that converges operation through solution, give corresponding packet data convergence protocol PDCP entity.
A protocol entity, comprising:
Receiving element, the packet sending for receiving relay station/base station, wherein packet is by the L1 layer of base station/relay station side, wireless chain control layer, media access control layer transmission;
Solution converges unit, for the packet being received by receiving element is carried out to solution, converges operation;
Transmitting element, for being converged the Packet Generation after solution converges operation that unit receives to packet data convergence protocol PDCP entity corresponding to base station/relay station side by solution.
A communication system, comprising: at least two packet data convergence protocol PDCP entities, service convergence layer RRLC entity, and wireless chain control layer RLC entity; Wherein PDCP entity is positioned at packet data convergence protocol, and RRLC entity is positioned at service convergence layer, and RLC entity is positioned at wireless chain control layer, and service convergence layer is between packet data convergence protocol and wireless chain control layer;
RLC entity, for by cut apart/converging operationJu Hecaozuo of the packet of receiving, and by the Packet Generation after processing to RRLC entity;
RRLC entity, carries out solution for the packet that RLC entity is sent and converges operation, and gives corresponding PDCP entity by the Packet Generation after solution converges operation;
PDCP entity, for receiving the packet being sent by RRLC entity.
The embodiment of the present invention improves method, communication system and the protocol entity of relay network system performance, by the RRLC entity by increasing newly, by solution, converge operation, the packet of the radio bearer of at least two terminals by a transmission channel is sent to respectively to corresponding terminal, overcome in prior art the defect of the waste Radio Resource that the packet by an a transmission channel corresponding radio bearer of terminal causes.Thereby the embodiment of the present invention takes full advantage of relay station to the transfer resource on this wireless links of base station, thereby optimize the systematic function of relay network system.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The schematic diagram of the protocol infrastructure that Fig. 1 sets up for principle based on the embodiment of the present invention;
Fig. 2 is the schematic diagram of the embodiment of the present invention one communication system;
Fig. 3 is the concrete schematic diagram of the embodiment of the present invention one communication system;
Fig. 4 is the method flow diagram that the embodiment of the present invention three improves relay network system performance;
Fig. 5 is the schematic diagram of RRLC PDU in the embodiment of the present invention three;
Fig. 6 is the another schematic diagram of RRLC PDU in the embodiment of the present invention three;
Fig. 7 is the another flow chart of method that the embodiment of the present invention three improves relay network system performance;
Fig. 8 is the method flow diagram of the raising relay network system performance described in the embodiment of the present invention four;
Fig. 9 is the schematic diagram of the embodiment of the present invention seven protocol entities;
Figure 10 is the schematic diagram of the embodiment of the present invention eight protocol entities.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
In embodiments of the present invention, at relay station, to the communication that has both direction on this wireless links of base station, we are called relay station up to the communication in the direction of base station, will to the communication in relay station direction, be called descending by base station.Different to the Uu interface between base station from relay station of the prior art, the embodiment of the present invention is improved to the Uu interface between base station relay station, at this, relay station after improving is called to Uu ' interface to the interface between base station.
The protocol stack of this Uu ' interface has five sublayers to form, respectively: PDCP layer, RRLC layer (Relay RLC, service convergence layer), rlc layer, MAC layer and L1 layer.Wherein, PDCP layer, rlc layer, MAC layer is identical with the definition of each protocol sublayers of Uu interface in 3GPP standard with L1 layer.And, at PDCP layer, comprise a plurality of PDCP entities, at RRLC layer, comprise a plurality of RRLC entities, in rlc layer, include a plurality of RLC entities.
In embodiments of the present invention, a high-rise radio bearer still can be associated with on a PDCP entity of PDCP layer, but a plurality of PDCP entities will first be associated with on a RRLC entity before being associated with on RLC entity, and then this RRLC entity is associated with on a RLC entity again.In other words, different from prior art, PDCP entity and RRLC entity are many-to-one relations, and RRLC entity and RLC entity are man-to-man relations, so PDCP entity and RLC entity have been realized many-to-one relation.Just by a kind of like this configuration relation, from the packet on the radio bearer of different terminals, by RRLC entity, converged to same RRLC PDU (Protocol Data Unit, protocol Data Unit) in and send RLC entity to and cut apart and polymerization, and be further multiplexed on same transmission channel by MAC layer entity, thereby the data sharing relay station that has reached a plurality of terminals is to the object of the same transmission channel on base station link.Figure 1 shows that the schematic diagram of the protocol infrastructure that the principle based on the embodiment of the present invention is set up.
Design principle based on above-mentioned, the embodiment of the present invention one provides a kind of communication system, as shown in Figure 2, comprising: at least two packet data convergence protocol PDCP entities 11, service convergence layer RRLC entity 12, and wireless chain control layer RLC entity 13; Wherein this PDCP entity 11 is positioned at packet data convergence protocol, and this RRLC entity 12 is positioned at service convergence layer, and this RLC entity 13 is positioned at wireless chain control layer, and this service convergence layer is between this packet data convergence protocol and this wireless chain control layer.
For Packet Generation being arrived to receiving equipment, as shown in Figure 3, the system of the embodiment of the present invention one also can comprise: media access control layer MAC entity 14, for by the packet multiplexing after cut apart/converging operationJu Hecaozuo to same transmission channel, through L1 layer, be transferred to receiving equipment.
Above-mentioned receiving equipment can be base station, can be also relay station.That is to say, in relay station side and base station side, all can comprise communication system as shown in Figure 2 or Figure 3.
As seen from the above, the communication system of the embodiment of the present invention one, by the RRLC entity by increasing newly by converging operation, the packet of the radio bearer of at least two terminals by a transmission channel, has been overcome in prior art to the defect of the waste Radio Resource that the packet by a corresponding radio bearer of terminal of a transmission channel causes.Thereby the embodiment of the present invention takes full advantage of relay station to the transfer resource on this wireless links of base station, thereby optimize the systematic function of relay network system.
So, corresponding with the system shown in embodiment mono-, the embodiment of the present invention two also provides a kind of communication system, identical with shown in Fig. 2 or Fig. 3 of its composition.Different, in embodiment bis-, RLC entity 13, for by cut apart/converging operationJu Hecaozuo of the packet of receiving, and by the Packet Generation after processing to RRLC entity; RRLC entity 12, carries out solution for the packet that RLC entity 13 is sent and converges operation, and give corresponding PDCP entity 11 by the Packet Generation after solution converges operation; PDCP entity 11, for receiving the packet being sent by RRLC entity 12.And in order to make receiving equipment can accurately receive the packet that transmitting apparatus sends, media access control layer MAC entity 14, for the packet being received by L1 layer being demultiplexed into logic channel, and by the Packet Generation after processing to RLC entity 13.
Certainly, in concrete application, the system of the embodiment of the present invention one and embodiment bis-also can synthesize a system, this each entity in just need to this system has the described corresponding function in embodiment mono-and embodiment bis-simultaneously, just, in different transmission directions, bring into play different functions.
The communication system of the embodiment of the present invention two, by the RRLC entity by increasing newly, by solution, converge operation, the packet of the radio bearer of at least two terminals by a transmission channel is sent to respectively to corresponding terminal, overcome in prior art the defect of the waste Radio Resource that the packet by an a transmission channel corresponding radio bearer of terminal causes.Thereby the embodiment of the present invention takes full advantage of relay station to the transfer resource on this wireless links of base station, thereby optimize the systematic function of relay network system.
As seen from the above description, the embodiment of the present invention can comprise uplink communication and communicating by letter on downlink communication both direction, following embodiment tri-and embodiment tetra-are described as example take respectively the processing mode of relay station and base station in uplink communication direction, and embodiment five and embodiment six are described as example take respectively the processing mode of relay station and base station in downlink communication direction.
For improving the systematic function of relay network system, as shown in Figure 4, the embodiment of the present invention three provides a kind of method that improves relay network system performance, comprises the steps:
The service convergence layer RRLC entity of step 41, relay station side receives the packet being sent by least two packet data convergence protocol PDCP entities.The packet that this PDCP entity sends is the packet from the radio bearer of at least two terminals.
The RRLC entity of step 42, relay station side converges operation to this packet.
At RRLC entity, this packet is converged in the process of operation, can realize by least following two kinds of modes:
Mode one: this RRLC entity comprises inner RLC entity and aggregation entity.First the inside RLC entity in RRLC entity, according to the PDCP protocol Data Unit of the packet being sent by this PDCP entity, generate inner rlc protocol data cell, then the aggregation entity in this RRLC entity generates RRLC protocol Data Unit according to the inside rlc protocol data cell generating.
Wherein the form of this inside rlc protocol data cell is identical with the form of RLC PDU, in this case describes accurately the technical scheme of the embodiment of the present invention, nominally the two is being distinguished.
And the structure of this RRLC PDU and content can comprise as shown in Figure 5: RRLC packet header and RRLC load.Wherein, this RRLC load comprises at least one inner rlc protocol data cell, and this RRLC packet header can comprise following information:
Data/control flag bit (D/C), for representing that this RRLC protocol Data Unit is data protocol data cell or control protocol data cell.Available 1 represents that this RRLC PDU is data protocol data cell, and 0 represents that this RRLC PDU is control protocol data cell.
Converge flag bit (A), length is 1 bit, for representing that this protocol Data Unit is RRLC protocol Data Unit or PDCP protocol Data Unit, to make base station or relay station that the packet receiving is mail to different protocol layers, processes.Available 1 represents that this PDU is RRLC protocol Data Unit, and 0 represents that this PDU is PDCP protocol Data Unit.
At least one reserved bit (R), for practical function expansion, default value is zero;
RRLC protocol data unit sequence number (SN), for the sequential delivery of RRLC protocol Data Unit;
Extension flag position (E
i), length is 1 bit, after being illustrated in i inner rlc protocol data cell, whether also has inner rlc protocol data cell, i is more than or equal to 1 integer.For example, available 0 no longer includes RLC PDU after being illustrated in RLC PDU#i, also has RLC PDU after being illustrated in RLC PDU#i with 1.
Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI
i), for unique identification terminal in Yi Ge community, its length is 16 bits, represents which terminal the RLC PDU#i in RRLC load comes from;
Logic Channel Identifier (LCID
i), length is 5 bits, for radio bearer of unique identification in a terminal, and determines the information of the radio bearer under inner rlc protocol data cell together with this Cell Radio Network Temporary Identifier/Identity, Cell-RNTI;
Length Indication (LI
i), for representing the length of inner rlc protocol data cell;
Fill field, in this filling field, fill 0, so that the length in RRLC packet header is whole byte, be convenient to machine processing.
Mode two: this RRLC entity comprises aggregation entity.Aggregation entity in RRLC entity, generates RRLC protocol Data Unit according to the PDCP protocol Data Unit of the packet being sent by PDCP entity.
As shown in Figure 6, this RRLC protocol Data Unit comprises RRLC packet header and RRLC load.Wherein, this RRLC load comprises at least one PDCP protocol Data Unit, and this RRLC packet header can comprise following information:
Data/control flag bit (D/C), for representing that this RRLC protocol Data Unit is data protocol data cell or control protocol data cell.Available 1 represents that this RRLC PDU is data protocol data cell, and 0 represents that this RRLC PDU is control protocol data cell.
Converge flag bit (A), length is 1 bit, for representing that this protocol Data Unit is RRLC protocol Data Unit or PDCP protocol Data Unit, to make base station or relay station that the packet receiving is mail to different protocol layers, processes.For example, available 1 represents that this PDU is RRLC protocol Data Unit, and 0 represents that this PDU is PDCP protocol Data Unit.
At least one reserved bit (R), for practical function expansion, default value is zero;
RRLC protocol data unit sequence number (SN), for the sequential delivery of RRLC protocol Data Unit;
Extension flag position (E
i), length is 1 bit, after being illustrated in i PDCP protocol Data Unit, whether also has PDCP protocol Data Unit, i is more than or equal to 1 integer.Available 0 no longer includes PDCP PDU after being illustrated in PDCPPDU#i, also has PDCP PDU after being illustrated in PDCP PDU#i with 1.
Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI
i), for unique identification terminal in Yi Ge community, its length is 16 bits, represents which terminal the PDCP PDU#i in RRLC load comes from;
Logic Channel Identifier (LCID
i), length is 5 bits, for radio bearer of unique identification in a terminal, and determines the information of the radio bearer under PDCP protocol Data Unit together with this Cell Radio Network Temporary Identifier/Identity, Cell-RNTI;
Length Indication (LI
i), for representing the length of PDCP protocol Data Unit;
Fill field, in this filling field, fill 0, so that the length in RRLC packet header is whole byte, be convenient to machine processing.
Certainly, this RRLC entity also can converge operation to the packet of receiving by other means, is not subject to the restriction of the embodiment of the present invention.
In addition,, for making base station can receive accurately the packet of terminal, as shown in Figure 7, the method for the embodiment of the present invention three also can comprise:
Wherein, the processing procedure of step 44 and step 45 and mode, with of the prior art identical, do not repeat them here.
As seen from the above, the method of the embodiment of the present invention three, by the RRLC entity by increasing newly by converging operation, the packet of the radio bearer of at least two terminals by a transmission channel, has been overcome in prior art to the defect of the waste Radio Resource that the packet by a corresponding radio bearer of terminal of a transmission channel causes.Thereby the embodiment of the present invention takes full advantage of relay station to the transfer resource on this wireless links of base station, thereby optimize the systematic function of relay network system.
Corresponding with the method for the embodiment of the present invention three, the embodiment of the present invention four also provides a kind of method that improves relay network system performance.This embodiment tetra-is mainly the processing method of describing the base station side corresponding with embodiment tri-.
As shown in Figure 8, the method for the raising relay network system performance of the embodiment of the present invention four comprises:
The service convergence layer RRLC entity of step 51, base station side receives the packet being sent by transmitting apparatus, and wherein this packet is transferred to this service convergence layer via L1 layer, media access control layer, wireless chain control layer.
Wherein, in this embodiment, this transmitting apparatus can refer to relay station.When the packet being sent by relay station via L1 layer, MAC layer, rlc layer transmission, first this L1 layer carries out modulating-coding by the packet being sent by transmitting apparatus and the processing such as transmission on wireless link, and by the Packet Generation after processing to media access control layer MAC entity, then MAC entity is demultiplexed into this packet on logic channel, and send to wireless chain control layer RLC entity, last RLC entity is removed the RLC data protocol unit receiving, and by the Packet Generation after processing to RRLC entity.
The RRLC entity of step 52, this base station side carries out solution to this packet and converges operation.
Equally, RRLC entity carries out solution to this packet and converges operation and can realize by least following two kinds of modes.
Mode one: this RRLC entity comprises inner RLC entity and aggregation entity.First the aggregation entity in this RRLC entity is removed the RRLC protocol Data Unit by the RLC entity transmission of wireless chain control layer, and by the Packet Generation after processing the inside RLC entity to RRLC entity, then the inside RLC entity in this RRLC entity is removed the inside rlc protocol data cell being received by this aggregation entity, and acquisition need send to the packet of this packet data convergence protocol PDCP entity.
Under this mode, the content that this RRLC PDU comprises and form with shown in Fig. 5 and in embodiment tri-corresponding describe identical.
Mode two: this RRLC entity comprises aggregation entity.Aggregation entity in RRLC entity is removed the RRLC protocol Data Unit by the RLC entity transmission of wireless chain control layer, and acquisition need send to the packet of packet data convergence protocol PDCP entity.
Under this mode, the content that this RRLC PDU comprises and form with shown in Fig. 6 and in embodiment tri-corresponding describe identical.
The RRLC entity of step 53, this base station side is given corresponding packet data convergence protocol PDCP entity by the Packet Generation that converges operation through solution.
Method by the embodiment of the present invention four can be found out, by the RRLC entity by increasing newly, by solution, converge operation, the packet of the radio bearer of at least two terminals by a transmission channel is sent to respectively to corresponding terminal, overcome in prior art the defect of the waste Radio Resource that the packet by an a transmission channel corresponding radio bearer of terminal causes.Thereby the embodiment of the present invention takes full advantage of relay station to the transfer resource on this wireless links of base station, thereby optimize the systematic function of relay network system.
The processing procedure of base station side and relay station side will be described respectively on down direction in embodiment five and embodiment six.In embodiment five, identical with described in embodiment tri-of the processing mode of base station side, different is the corresponding executive agent that in embodiment tri-, the executive agent in each step has become base station side; And in embodiment six, the processing mode of relay station side is identical, different with described in embodiment tetra-also, the executive agent in embodiment tetra-in each step has become the corresponding executive agent of relay station side.The detailed process realizing is described in detail in detail below.
The embodiment of the present invention five provides a kind of method that improves relay network system performance, comprises the steps:
The service convergence layer RRLC entity of step 61, base station side receives the packet being sent by least two packet data convergence protocol PDCP entities.The packet that this PDCP entity sends is the packet from the radio bearer of at least two terminals.
The RRLC entity of step 62, base station side converges operation to this packet.
Wherein, this RRLC entity converges the process of operation, with in step 42, describe identical.
Step 63, RRLC entity be the wireless chain control layer RLC entity to transmitting apparatus by the Packet Generation after converging operation, so that this packet after converging operation is transferred to receiving equipment through wireless chain control layer, media access control layer, L1 layer.
In addition,, for making relay station side can receive accurately the packet of terminal, the method for the embodiment of the present invention five also can comprise:
Step 64, RLC entity send to media access control layer MAC entity after to the cut apart/converging operationJu Hecaozuo of the packet after converging operation of receiving;
Step 65, this MAC entity to same transmission channel, are transferred to receiving equipment by L1 layer by the packet multiplexing of receiving.
As seen from the above, the method of the embodiment of the present invention five, by the RRLC entity by increasing newly by converging operation, the packet of the radio bearer of at least two terminals by a transmission channel, has been overcome in prior art to the defect of the waste Radio Resource that the packet by a corresponding radio bearer of terminal of a transmission channel causes.Thereby the embodiment of the present invention takes full advantage of relay station to the transfer resource on this wireless links of base station, thereby optimize the systematic function of relay network system.
Corresponding with embodiment five, the embodiment of the present invention six also provides a kind of method that improves relay network system performance, comprises the steps:
The service convergence layer RRLC entity of step 71, relay station side receives the packet being sent by transmitting apparatus, and wherein this packet is transferred to this service convergence layer via L1 layer, media access control layer, wireless chain control layer.
The RRLC entity of step 72, this relay station side carries out solution to this packet and converges operation.
Wherein, this RRLC entity carry out solution converge the process of operation with in step 52, describe identical.
The RRLC entity of step 73, this relay station side is given corresponding packet data convergence protocol PDCP entity by the Packet Generation that converges operation through solution.
Method by the embodiment of the present invention six can be found out, by the RRLC entity by increasing newly, by solution, converge operation, the packet of the radio bearer of at least two terminals by a transmission channel is sent to respectively to corresponding terminal, overcome in prior art the defect of the waste Radio Resource that the packet by an a transmission channel corresponding radio bearer of terminal causes.Thereby the embodiment of the present invention takes full advantage of relay station to the transfer resource on this wireless links of base station, thereby optimize the systematic function of relay network system.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, to come the hardware that instruction is relevant to complete by computer program, described program can be stored in a computer read/write memory medium, this program, when carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
As shown in Figure 9, the embodiment of the present invention seven also provides a kind of protocol entity.Comprise:
Receiving element 81, for receiving the packet by least two packet data convergence protocol PDCP entities transmissions of relay station/base station side;
Transmitting element 83, for by converged the Packet Generation after converging operation that unit 82 the receives wireless chain control layer RLC entity to relay station/base station side by this, so that the packet after converging operation is transferred to base station/relay station through wireless chain control layer, media access control layer, L1 layer.
Wherein, this converge unit 82 can be by the operation of converging of at least two kinds of complete paired data bags of mode.Therefore, this converges unit 82 and can comprise: the first convergence module, generates inner rlc protocol data cell for the PDCP protocol Data Unit sending according to the PDCP entity by relay station/base station side; The second convergence module, generates RRLC protocol Data Unit for the inside rlc protocol data cell generating according to this first convergence module.Or this converges unit 82 and also can comprise: the 3rd convergence module, generates RRLC protocol Data Unit for the PDCP protocol Data Unit sending according to the PDCP entity by relay station/base station side.
And the protocol entity shown in Fig. 9 is arranged in the service convergence layer of relay station or base station.
As seen from the above, the protocol entity of the embodiment of the present invention seven, by converging unit by converging operation, the packet of the radio bearer of at least two terminals by a transmission channel, has been overcome in prior art to the defect of the waste Radio Resource that the packet by a corresponding radio bearer of terminal of a transmission channel causes.Thereby the embodiment of the present invention seven takes full advantage of relay station to the transfer resource on this wireless links of base station, thereby optimize the systematic function of relay network system.
As shown in figure 10, the embodiment of the present invention eight also provides a kind of protocol entity.Comprise:
Receiving element 91, the packet sending for receiving relay station/base station, wherein this packet is by the L1 layer of base station/relay station side, wireless chain control layer, media access control layer transmission;
Solution converges unit 92, for the packet being received by this receiving element 91 is carried out to solution, converges operation;
Transmitting element 93, for being converged the Packet Generation after solution converges operation that unit 92 receives to packet data convergence protocol PDCP entity corresponding to base station/relay station side by this solution.
Corresponding with embodiment seven, this solution converges unit 92 also can converge operation by the solution of at least two kinds of complete paired data bags of mode.Therefore, this solution converges unit 92 and comprises: first separates convergence module, the RRLC protocol Data Unit sending for the RLC entity of removing by the wireless chain control layer of base station/relay station side, and by the Packet Generation after processing to the second solution convergence module; Second separates convergence module, and for removing the inside rlc protocol data cell being received by this first solution convergence module, acquisition need send to the packet of the packet data convergence protocol PDCP entity of base station/relay station side.
Or, this solution converges unit 92 and also can comprise: the 3rd separates convergence module, the RRLC protocol Data Unit sending for the RLC entity of removing by the wireless chain control layer of this base station/relay station side, acquisition need send to the packet of the packet data convergence protocol PDCP entity of base station/relay station side.
Equally, the protocol entity shown in Figure 10 can be arranged in the service convergence layer of relay station or base station.
Method by the embodiment of the present invention six can be found out, by solution, converge unit and converge operation by solution, the packet of the radio bearer of at least two terminals by a transmission channel is sent to respectively to corresponding terminal, overcome in prior art the defect of the waste Radio Resource that the packet by an a transmission channel corresponding radio bearer of terminal causes.Thereby the embodiment of the present invention eight takes full advantage of relay station to the transfer resource on this wireless links of base station, thereby optimize the systematic function of relay network system.
Certainly, in concrete application, also the function of each corresponding functional module in the protocol entity shown in Fig. 9 and Figure 10 can be integrated in same functional module and realize.And the protocol entity of function that is integrated with the corresponding function module of Fig. 9 and Figure 10 can be positioned at relay station side or base station side, just, on different communication directions, each functional module is brought into play its corresponding function.
In addition, the embodiment of the present invention can be mainly used in the technical fields such as junction network.
In sum, the embodiment of the present invention improves method, communication system and the protocol entity of relay network system performance, by the RRLC entity increasing newly, the packet of the radio bearer of at least two terminals is passed through to a transmission channel, or terminal corresponding to the packet through a transmission channel send respectively to, overcome in prior art the defect of the waste Radio Resource that the packet by an a transmission channel corresponding radio bearer of terminal causes.Thereby the embodiment of the present invention takes full advantage of relay station to the transfer resource on this wireless links of base station, thereby optimize the systematic function of relay network system.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (16)
1. a method that improves relay network system performance, is characterized in that, comprising:
Service convergence layer RRLC entity receives the packet being sent by least two packet data convergence protocol PDCP entities;
Described RRLC entity converges operation to described packet, so that the packet of the radio bearer of at least two terminals is by a transmission channel;
By described Packet Generation after converging operation to wireless chain control layer RLC entity, so that described packet after converging operation is transferred to receiving equipment through wireless chain control layer, media access control layer, L1 layer;
Wherein, described RRLC entity comprises inner RLC entity and aggregation entity; Described RRLC entity converges operation to packet and comprises: the PDCP protocol Data Unit that described inner RLC entity sends according to described PDCP entity generates inner rlc protocol data cell; Described aggregation entity generates RRLC protocol Data Unit according to the inside rlc protocol data cell of described generation;
Or described RRLC entity comprises aggregation entity; Described RRLC entity converges operation to described packet and comprises: the PDCP protocol Data Unit that described aggregation entity sends according to described PDCP entity generates RRLC protocol Data Unit.
2. method according to claim 1, is characterized in that, described RRLC protocol Data Unit comprises: RRLC packet header and RRLC load;
Wherein, described RRLC load comprises at least one inner rlc protocol data cell;
Described RRLC packet header comprises following information:
Data/control flag bit, for representing that described RRLC protocol Data Unit is data protocol data cell or control protocol data cell;
Converge flag bit, for representing that described protocol Data Unit is RRLC protocol Data Unit or PDCP protocol Data Unit;
At least one reserved bit, for practical function expansion, default value is zero;
RRLC protocol data unit sequence number, for the sequential delivery of RRLC protocol Data Unit;
Whether extension flag position, also have inner rlc protocol data cell after being illustrated in i inner rlc protocol data cell, and i is more than or equal to 1 integer;
Cell Radio Network Temporary Identifier/Identity, Cell-RNTI, for unique identification terminal in Yi Ge community;
Logic Channel Identifier for radio bearer of unique identification in a terminal, and is determined the information of the radio bearer under inner rlc protocol data cell together with described Cell Radio Network Temporary Identifier/Identity, Cell-RNTI;
Length Indication, for representing the length of inner rlc protocol data cell;
Fill field, in described filling field, fill 0, making the length in RRLC packet header is whole byte, is convenient to machine processing.
3. method according to claim 1, is characterized in that, described RRLC protocol Data Unit comprises RRLC packet header and RRLC load;
Wherein, described RRLC load comprises at least one PDCP protocol Data Unit;
Described RRLC packet header at least comprises following information:
Data/control flag bit, for representing that described RRLC protocol Data Unit is data protocol data cell or control protocol data cell;
Converge flag bit, for representing that described protocol Data Unit is RRLC protocol Data Unit or PDCP protocol Data Unit;
At least one reserved bit, for practical function expansion, default value is zero;
RRLC protocol data unit sequence number, for the sequential delivery of RRLC protocol Data Unit;
Whether extension flag position, also have PDCP protocol Data Unit after being illustrated in i PDCP protocol Data Unit, and i is more than or equal to 1 integer;
Cell Radio Network Temporary Identifier/Identity, Cell-RNTI, for unique identification terminal in Yi Ge community;
Logic Channel Identifier for radio bearer of unique identification in a terminal, and is determined the information of the radio bearer under PDCP protocol Data Unit together with described Cell Radio Network Temporary Identifier/Identity, Cell-RNTI;
Length Indication, for representing the length of PDCP protocol Data Unit;
Fill field, in described filling field, fill 0, making the length in RRLC packet header is whole byte, is convenient to machine processing.
4. according to method described in claim 1-3 any one, it is characterized in that, describedly packet after converging operation is transferred to receiving equipment through wireless chain control layer, media access control layer, L1 layer comprises:
Described RLC entity sends to described media access control layer MAC entity after to the cut apart/converging operationJu Hecaozuo of the packet after converging operation of receiving;
Described MAC entity to same transmission channel, is transferred to described receiving equipment by described L1 layer by the packet multiplexing of receiving.
5. method according to claim 4, is characterized in that, described receiving equipment comprises base station or relay station.
6. a method that improves relay network system performance, is characterized in that, comprising:
Service convergence layer RRLC entity receives the packet being sent by transmitting apparatus, and wherein said packet is transferred to described service convergence layer via L1 layer, media access control layer, wireless chain control layer;
Described RRLC entity carries out solution to described packet and converges operation, so that the packet of the radio bearer of at least two terminals by a transmission channel sends to respectively corresponding terminal;
By the described Packet Generation that converges operation through solution, give corresponding packet data convergence protocol PDCP entity;
Wherein, described RRLC entity comprises inner RLC entity and aggregation entity; Described RRLC entity carries out solution to described packet and converges operation and comprise: described aggregation entity is removed the RRLC protocol Data Unit that the RLC entity by described wireless chain control layer sends, and by the Packet Generation after processing the inside RLC entity to described RRLC entity; Described inner RLC entity is removed the inside rlc protocol data cell being received by described aggregation entity, and acquisition need send to the packet of described packet data convergence protocol PDCP entity;
Or described RRLC entity comprises aggregation entity; Described RRLC entity carries out solution to described packet and converges operation and comprise: described aggregation entity is removed the RRLC protocol Data Unit that the RLC entity by described wireless chain control layer sends, and acquisition need send to the packet of packet data convergence protocol PDCP entity.
7. method according to claim 6, is characterized in that, before described service convergence layer RRLC entity receives the step of the packet being sent by transmitting apparatus, described method also comprises:
Described L1 layer is processed the packet being sent by described transmitting apparatus, and gives described media access control layer MAC entity by the Packet Generation after processing;
Described MAC entity is demultiplexed into described packet on logic channel, and sends to described wireless chain control layer RLC entity;
Described RLC entity is removed the RLC data protocol unit receiving, and gives described RRLC entity by the Packet Generation after processing.
8. according to right, want the method described in 7, it is characterized in that, described transmitting apparatus comprises relay station or base station.
9. a protocol entity, is characterized in that, comprising:
Receiving element, for receiving the packet by least two packet data convergence protocol PDCP entities transmissions of relay station/base station side;
Converge unit, for the packet being received by described receiving element is converged to operation, so that the packet of the radio bearer of at least two terminals is by a transmission channel;
Transmitting element, for converging the Packet Generation after converging operation that unit receives to the wireless chain control layer RLC entity of relay station/base station side by described, so that described packet after converging operation is transferred to described base station/relay station through wireless chain control layer, media access control layer, L1 layer;
Wherein, described in, converging unit comprises:
The first convergence module, generates inner rlc protocol data cell for the PDCP protocol Data Unit sending according to the PDCP entity by described relay station/base station side;
The second convergence module, generates RRLC protocol Data Unit for the inside rlc protocol data cell generating according to described the first convergence module;
The 3rd convergence module, generates RRLC protocol Data Unit for the PDCP protocol Data Unit sending according to the PDCP entity by described relay station/base station side.
10. protocol entity according to claim 9, is characterized in that, described protocol entity is positioned at the service convergence layer of described relay station or base station.
11. 1 kinds of protocol entities, is characterized in that, comprising:
Receiving element, the packet sending for receiving relay station/base station, wherein said packet is to transmit via the L1 layer of base station/relay station side, wireless chain control layer, media access control layer;
Solution converges unit, for the packet being received by described receiving element is carried out to solution, converges operation, so that the packet of the radio bearer of at least two terminals by a transmission channel sends to respectively corresponding terminal;
Transmitting element, for being converged the Packet Generation after solution converges operation that unit receives to packet data convergence protocol PDCP entity corresponding to base station/relay station side by described solution;
Wherein, described solution converges unit and comprises:
First separates convergence module, the RRLC protocol Data Unit sending for the RLC entity of removing by the wireless chain control layer of described base station/relay station side, and by the Packet Generation after processing to the second solution convergence module;
Second separates convergence module, and for removing the inside rlc protocol data cell being received by described the first solution convergence module, acquisition need send to the packet of the packet data convergence protocol PDCP entity of described base station/relay station side;
The 3rd separates convergence module, the RRLC protocol Data Unit sending for the RLC entity of removing by the wireless chain control layer of described base station/relay station side, and acquisition need send to the packet of the packet data convergence protocol PDCP entity of described base station/relay station side.
12. protocol entities according to claim 11, is characterized in that, described protocol entity is positioned at the service convergence layer of described relay station or base station.
13. 1 kinds of communication systems, is characterized in that, comprising: at least two packet data convergence protocol PDCP entities, service convergence layer RRLC entity, and wireless chain control layer RLC entity; Wherein said PDCP entity is positioned at packet data convergence protocol, described RRLC entity is positioned at service convergence layer, described RLC entity is positioned at wireless chain control layer, and described service convergence layer is between described packet data convergence protocol and described wireless chain control layer;
Described PDCP entity, for sending from high-rise packet to described RRLC entity;
Described RRLC entity, for the packet that described at least two PDCP entities are sent, converge operation, so that the packet of the radio bearer of at least two terminals passes through a transmission channel, and give described RLC entity by the Packet Generation after converging operation;
Described RLC entity, for the cut apart/converging operationJu Hecaozuo of the packet after converging operation to receiving;
Wherein, described RRLC entity comprises inner RLC entity and aggregation entity; Described RRLC entity converges operation to packet and comprises: the PDCP protocol Data Unit that described inner RLC entity sends according to described PDCP entity generates inner rlc protocol data cell; Described aggregation entity generates RRLC protocol Data Unit according to the inside rlc protocol data cell of described generation;
Or described RRLC entity comprises aggregation entity; Described RRLC entity converges operation to described packet and comprises: the PDCP protocol Data Unit that described aggregation entity sends according to described PDCP entity generates RRLC protocol Data Unit.
14. systems according to claim 13, is characterized in that, also comprise:
Media access control layer MAC entity, for by described packet multiplexing after cut apart/converging operationJu Hecaozuo to same transmission channel, through L1 layer, be transferred to receiving equipment.
15. 1 kinds of communication systems, is characterized in that, comprising: at least two packet data convergence protocol PDCP entities, service convergence layer RRLC entity, and wireless chain control layer RLC entity; Wherein said PDCP entity is positioned at packet data convergence protocol, described RRLC entity is positioned at service convergence layer, described RLC entity is positioned at wireless chain control layer, and described service convergence layer is between described packet data convergence protocol and described wireless chain control layer;
Described RLC entity, for by cut apart/converging operationJu Hecaozuo of the packet of receiving, and by the Packet Generation after processing to described RRLC entity;
Described RRLC entity, for the packet that described RLC entity is sent, carry out solution and converge operation, so that the packet of the radio bearer of at least two terminals by a transmission channel sends to respectively corresponding terminal, and give corresponding PDCP entity by the Packet Generation after solution converges operation;
Described PDCP entity, for receiving the packet being sent by described RRLC entity;
Wherein, described RRLC entity comprises inner RLC entity and aggregation entity; Described RRLC entity carries out solution to described packet and converges operation and comprise: described aggregation entity is removed the RRLC protocol Data Unit that the RLC entity by described wireless chain control layer sends, and by the Packet Generation after processing the inside RLC entity to described RRLC entity; Described inner RLC entity is removed the inside rlc protocol data cell being received by described aggregation entity, and acquisition need send to the packet of described packet data convergence protocol PDCP entity;
Or described RRLC entity comprises aggregation entity; Described RRLC entity carries out solution to described packet and converges operation and comprise: described aggregation entity is removed the RRLC protocol Data Unit that the RLC entity by described wireless chain control layer sends, and acquisition need send to the packet of packet data convergence protocol PDCP entity.
16. systems according to claim 15, is characterized in that, also comprise:
Media access control layer MAC entity, for the packet being received by L1 layer is demultiplexed into logic channel, and gives described RLC entity by the Packet Generation after processing.
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| PCT/CN2009/070764 WO2010102453A1 (en) | 2009-03-12 | 2009-03-12 | Method, communication system and protocol entity for improving performance of relay network system |
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| CN102369784B true CN102369784B (en) | 2014-03-12 |
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| CN105635081B (en) * | 2014-11-07 | 2018-10-26 | 中国移动通信集团公司 | A kind of method and device that message is sent |
| CN107295459B (en) * | 2016-03-30 | 2019-12-03 | 财团法人工业技术研究院 | Communication system, communication device, base station and method for D2D communication |
| US10021596B2 (en) | 2016-03-30 | 2018-07-10 | Industrial Technology Research Institute | Communication system, communication device, base station and method thereof for D2D communications |
| JP6999689B2 (en) * | 2017-03-23 | 2022-01-19 | オッポ広東移動通信有限公司 | Data transmission method, terminal equipment and network equipment |
| CN109842440B (en) | 2017-11-27 | 2021-08-27 | 华为技术有限公司 | Communication method, communication node and system |
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| CN1913534A (en) * | 2006-08-17 | 2007-02-14 | 华为技术有限公司 | Data processing method and communication equipment |
| CN101141347A (en) * | 2007-05-24 | 2008-03-12 | 中兴通讯股份有限公司 | Multi-path ethernet signal gathering apparatus and method |
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| CN1913534A (en) * | 2006-08-17 | 2007-02-14 | 华为技术有限公司 | Data processing method and communication equipment |
| CN101141347A (en) * | 2007-05-24 | 2008-03-12 | 中兴通讯股份有限公司 | Multi-path ethernet signal gathering apparatus and method |
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