CN101026410A - Evolutionary configuration based base station and terminal, and its data transmitting and receiving method - Google Patents
Evolutionary configuration based base station and terminal, and its data transmitting and receiving method Download PDFInfo
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Abstract
The base station includes processing unit (PU) in physical layer, and MAC unit connected to each other. MAC unit includes modules: partition concatenation module partitions and cascades data; the transmission block generation module adds the head information on data after partitioning and cascading operation to generate the transmission block (TB) sent to physical layer. PU in physical layer adds check bit on TB, and sends it to terminal. Terminal includes connected PU in physical layer, MAC unit, PDCP unit, and IP unit. PU in physical layer checks TB from the base station. In MAC unit, decomposition module removes data header to decompose TB; rearrangement module sorts the decomposed data; recombination module recombines sorted data. Parsing header of the recombined data, PDCP unit compresses data, and sends the compressed data to up layer. The invention makes better interaction between MAC layer and RLC layer, reduces unnecessary time delay, overhead, and filling operation.
Description
Technical field
The present invention relates to wireless transmitting system, relate in particular to a kind of base station and terminal and data transmission and method of reseptance in the wireless transmitting system based on evolution architecture.
Background technology
UMTS adopts the WCDMA Radio Transmission Technology on the interface aloft, in R6, be divided into these 3 protocol layers of L1, L2 and L3, correspond respectively to physical layer, data link layer and the network layer of OSI Reference Model, wherein L2 is divided into medium access control (MAC), Radio Link control (RLC), PDCP (PDCP) and broadcast/group broadcast control protocol (BMC) again, and its protocol architecture as shown in Figure 1.
MAC is positioned on the physical layer of UMTS grounding wireless access network (UTRAN) air interface, is the sublayer of data link layer L2, and it has shielded the characteristic of physical transfer medium, and the means of using physical medium are provided for high level.The high-rise logic channel that provides by MAC transmits data and signaling information, on the transmission channel that MAC provides these information mapping to physical layer according to the characteristic of physical medium, and is the suitable transformat of each transmission channel selection.In addition, in the case of necessary, MAC also can carry out logic channel multiplexing to transmission channel.
Media access control sublayer provides data transport service on the logic channel.At data of different types transmission service, defined one group of dissimilar logic channel in the agreement, each logical channel type all is according to the type definition of its institute's information transmitted: the channel of control information transmission is called control channel, comprise Broadcast Control Channel (BCCH), Paging Control Channel (PCCH), Dedicated Control Channel (DCCH), Common Control Channel (CCCH) and SHCCH Shared Channel Control Channel (SHCCH); The channel of transport service information is called Traffic Channel, comprises two kinds of Dedicated Traffic Channel (DTCH) and CTCH Common Traffic Channels (CTCH).
The Service Access Point that physical layer offers the upper strata shows as a series of transmission channels, and the MAC layer is responsible for the scheduling and the use of these transmission channels, and the execution of concrete protocol function is finished by the MAC entity.According to the difference of handled transmission channel, the MAC entity can be divided into MAC-b, MAC-c/sh/m, MAC-d, MAC-hs, MAC-e/es.MAC-b is responsible for handling broadcast channel (BCH); MAC-c/sh/m is responsible for handling public and shares transmission channel, comprises paging channel (PCH), forward access channel (FACH) Random Access Channel (RACH), DSCH Downlink Shared Channel under the tdd mode (DSCH) and Uplink Shared Channel (USCH); MAC-d only is responsible for handling dedicated transmission channel (DCH); MAC-hs is responsible for handling high speed descending sharing channel (HS-DSCH); MAC-e/es is responsible for handling and strengthens special uplink channel (E-DCH), and the MAC architecture of user terminal (UE) face as shown in Figure 2.
Radio link control (RLC) is positioned at the second layer of UTRAN air interface, the logic channel that utilizes media access control sublayer to provide provides reliable data transmission service for high level, its position and effect are equivalent to data link layer in the OSI Reference Model, are the important steps of (QoS) of guaranteeing service quality on the wave point.Because the channel conditions in the radio propagation environment and abominable, transmission error rates is high, therefore guarantees that the reliable transmission of data is very difficult tasks.So 3-G (Generation Three mobile communication system) has been introduced many new automatic re-send request may (ARQ) mechanism in the RLC sublayer, to adapt to the requirement of high quality-of-service.
According to the qos requirement of different stage, RLC can provide the data transport service of 3 kinds of patterns: transparent, non-affirmation and affirmation.The service quality of transparent mode is minimum, and Unacknowledged Mode takes second place, and the service quality of affirmation mode is the highest.Automatic retransmission mechanism only is embodied in the RLC entity of affirmation mode.
RLC provides the Segmentation and Reassembly function for user data and control information.Each RLC entity is by Radio Resource control (RRC) configuration, and its implementation status is exercised supervision and controls.On user plane, the business that the RLC sublayer provides to the upper strata is called radio bearer (RB); On control plane, the business that the RLC sublayer provides to the upper strata is called Signaling Radio Bearer (SRB).These two kinds are carried on the RLC sublayer is unified the numbering, and SRB can be considered to a kind of special RB.
Below, the scheme of a prior art related to the present invention is described with reference to Fig. 3.
In the user face protocol stack of R6, rlc layer is positioned at radio network controller (RNC), and the MAC layer is positioned at base station (NodeB), and standard interface Iub is arranged between NodeB and the RNC.When data interaction is arranged, mutual between rlc layer and the MAC layer by Iub interface.
With reference to Fig. 4, the handling process of down link UTRAN face Packet Service among the R6 is described.
■ head compression: data are flow to the wardrobe compression.
■ division cascade: the protocol Data Unit (PDU, Protocol data unit) of sizes such as the data segmentation cascade one-tenth that the upper strata is next.
■ retransmits buffer memory and management (ARQ): rlc layer retransmits automatically.
■ encrypts: (PDU) encrypts to protocol Data Unit.
The ■ transmission channel kinds switches: switch between dedicated transmission channel, Common transport channel and shared transmission channel.
The ■ flow control: the flow between control NodeB and the RNC prevents that data from overflowing.
■ scheduling: dispatching between same user's different data streams or between the data flow of different user.
■ mixes automatic repeat requests (HARQ): physical layer is mixed re-transmission automatically.
■ physical layer process: transmission block is added cyclic redundancy check (CRC) after be sent to UE by aerial physical channel in physical layer.
As shown in Figure 4, in UTRAN, RNC comprises PDCP unit, RLC unit and the MAC-d unit that links to each other successively, and NodeB comprises continuous MAC-hs unit and physical layer processing unit.On RNC, the PDCP unit comprises a compression module, and the RLC unit comprises division cascade module, ARQ module and encrypting module, and the MAC-d unit comprises transmission channel kinds handover module and flow-control module.On NodeB, the MAC-hs unit comprises scheduler module and HARQ module.
With reference to Fig. 5, the handling process of down link UE face Packet Service among the R6 is described.
■ physical layer process:, and carry out cyclic redundancy check (CRC) from the transmission block of physical layer reception from the base station.
■ mixes automatic repeat requests (HARQ): physical layer is mixed re-transmission automatically.
The ■ queue and rearrangement distributes: data based queue number is routed in the corresponding rearrangement buffer memory.
■ resets: according to transmission sequence number data are reset.
■ decomposes: data are decomposed, take out header and filling.
■ deciphering: data are decrypted.
■ ARQ:RLC layer retransmits automatically.
■ reorganization: decomposed data is recombinated.
■ separates the head compression: data stream is separated the head compression.
As shown in Figure 5, the UE among the UTRAN comprises physical layer processing unit, MAC-hs unit, MAC-d unit, RLC unit and the PDCP unit that links to each other successively.Wherein, the MAC-hs unit comprises HARQ module, queue and rearrangement distribution module, reordering module and decomposing module, and the RLC unit comprises deciphering module, ARQ module and recombination module, and the PDCP unit comprises a compression module.
At first, from the protocol hierarchy framework, rlc layer lays respectively on different the network node NodeB and RNC with the MAC layer, and their data interactions need be passed through Iub interface, will bring unnecessary time delay like this.
And, when they are positioned at the heterogeneous networks node, because being the concrete data of not knowing lower floor's network node, the upper layer network node sends situation, promptly RNC does not know that the concrete data of NodeB send information, under the situation that RLC retransmits, be easy to cause the invalid re-transmission of RLC like this.Because according to current RLC retransmission mechanism, the rlc layer of RNC can send to NodeB once more confiscating the PDU that confirms, when data volume is big, partly retransmitting the data of coming among the NodeB from RNC does not in time send, UE can feed back unacknowledged information, and RNC can retransmit these data according to the unacknowledged information of UE like this, and these data may also not send in NodeB, so just caused the invalid re-transmission of data, the bandwidth of also having wasted the Iub mouth simultaneously.
Secondly, division cascade is done at rlc layer in R6, and rlc layer is positioned at RNC, is difficult to know the situation of eating dishes without rice or wine, the division cascade data of the coming out transmission block coupling that is difficult to and eats dishes without rice or wine to allow like this, and certainly will cause much unnecessary fillings (padding).
At last, the functional redundancy and the repetition of rlc layer and MAC layer two-layerly all have cascade function, automatically functions of retransmission, an encryption function etc. such as this; And some function may be unwanted in long-term evolution structure (LTE), switches transparent transmission pattern etc. as the dynamic transmission channel type.These unnecessary functions have been brought complexity and extra processing delay to prior protocols.
Summary of the invention
At the some defectives that exist in the above-mentioned prior art, the invention provides a kind of base station and terminal and data transmission and method of reseptance based on evolution architecture, so that on the existing protocol basis, the some of them function is integrated, remove unnecessary function, and some function transplanting is arrived only place.
A kind of data emitting method of the base station based on evolution architecture is proposed on the one hand.May further comprise the steps:
A, data are carried out division cascade at the media access control MAC layer;
B, add that header generates transmission block and is sent to physical layer via transmission channel for the data behind the division cascade;
C, after adding check digit to transmission block, physical layer is sent to terminal.
Said method also is included in the step of carrying out among step B or the C: transmission block is carried out physical layer buffer memory and re-transmission (HARQ).
Above-mentioned steps A also comprises step: the data or the data behind the division cascade that arrive the MAC layer are carried out high-rise buffer memory and re-transmission (ARQ).
During above-mentioned steps A is further comprising the steps of at least one:
Between each data flow, carry out scheduling based on service quality QoS;
Data are encrypted.
Said method also is included in the step of carrying out among step B or the C: for the transmission block of different business is selected suitable transformat.
Said method also is included in the step of carrying out before the division cascade described in the steps A: carry out multiplexing to the data flow that service quality QoS is identical.
Said method also is included in the step of carrying out before the steps A: at PDCP PDCP layer data are flow to the wardrobe compression.
Said method also is included in before the described head compression or the step of carrying out before division cascade described in the steps A: carry out multiplexing to the data flow that service quality QoS is identical.
A kind of data receive method of the terminal based on evolution architecture is proposed on the other hand.May further comprise the steps:
A, after carrying out verification to the transmission block from the base station, physical layer is sent to the media access control MAC layer;
B, decompose transmission block by removing data head;
C, decomposed data is sorted;
Data after D, the reorganization ordering;
E, after separating data head compression, PDCP PDCP layer is sent to high level.
Above-mentioned steps B also is included in the step of carrying out before the described decomposition transmission block: the transmission block of error of transmission or the transmission block of losing are carried out physical layer feedback, and the request base station retransmits corresponding data.
Said method also is included in and decomposes after the transmission block described in the step B or the step of carrying out after recombination data described in the step D: the data of error of transmission are carried out the high level feedback, and the request base station retransmits corresponding data.
Said method also is included in described in the step C after the ordering or is separating the step of carrying out before the head compression described in the step e: data are decrypted.
Said method also is included in described in the step D after the reorganization or after separating the head compression described in the step e or the step of execution after step e: the data flow that service quality QoS is identical is carried out demultiplexing.
Above-mentioned steps B also is included in the step of carrying out before the described decomposition transmission block: the data flow that service quality QoS is identical is routed in the same formation.
On the one hand, a kind of base station based on evolution architecture is proposed again.This base station comprises continuous physical layer processing unit and media access control MAC unit.The media access control MAC unit comprises the division cascade module, is used for data are carried out division cascade; The transmission block generation module is used for adding that to the data behind the division cascade header generates transmission block and is sent to physical layer via transmission channel; Physical layer processing unit is sent to terminal after being used for adding check digit to transmission block.
Above-mentioned MAC unit or physical layer processing unit also comprise mixed (HARQ) module that retransmits automatically, are used for transmission block is carried out physical layer buffer memory and re-transmission.
Above-mentioned MAC unit also comprises re-transmission buffer memory and management (ARQ) module, and the data or the data behind the division cascade that are used for the MAC unit is received are carried out high-rise buffer memory and re-transmission.
Above-mentioned MAC unit also comprise with in the lower module at least one:
Scheduler module is used for carrying out the scheduling based on service quality QoS between each data flow;
Encrypting module is used for data are encrypted.
Above-mentioned MAC unit or physical layer processing unit also comprise transformat selection module, are used to the transmission block of different business to select suitable transformat.
Above-mentioned MAC unit also comprises the Multiplexing module based on service quality QoS, and the identical data flow of service quality QoS that is used for the MAC unit is received is carried out multiplexing.
Above-mentioned base station also comprises the PDCP PDCP unit that is connected on the MAC unit, and this PDCP unit comprises a compression module, is used for data are flow to the wardrobe compression.
Above-mentioned PDCP unit or MAC unit also comprise the Multiplexing module based on service quality QoS, and the identical data flow of service quality QoS that is used for its unit, place is received is carried out multiplexing.
Also have on the one hand, propose a kind of terminal based on evolution architecture.This terminal comprises the high-rise processing unit of the physical layer processing unit, media access control MAC unit, PDCP PDCP unit and the business datum that link to each other successively.Wherein,
Physical layer processing unit is used for receiving from the transmission block of base station and carrying out verification from physical layer,
The media access control MAC unit comprises decomposing module, is used for decomposing transmission block by removing data head; Reordering module is used for decomposed data is sorted; Recombination module, the data after the ordering that is used to recombinate,
PDCP PDCP unit comprises separates a compression module, is sent to high level after being used for data are separated head compression.
Above-mentioned MAC unit also comprises mixed (HARQ) module that retransmits automatically, is used for the transmission block of the error of transmission that arrives the MAC unit or the transmission block of losing are carried out physical layer feedback and ask the base station to retransmit corresponding data.
Above-mentioned MAC unit also comprises re-transmission buffer memory and management (ARQ) module that is connected on decomposing module or the recombination module, is used for the data of error of transmission are carried out high level feedback and request base station re-transmission corresponding data.
Above-mentioned MAC unit or PDCP unit also comprise deciphering module, are used for data are decrypted.
The high-rise processing unit of above-mentioned MAC unit or PDCP unit or business datum also comprises the demultiplexing module based on service quality QoS, is used for the identical data flow of service quality QoS is carried out demultiplexing.
Above-mentioned MAC unit also comprises transmission block queue distribution module, is used for being sent to decomposing module after the data flow that service quality QoS is identical is routed to same formation.
Advantage and characteristics that the present invention is main are as follows:
1. after rlc layer being moved down into NodeB, it and MAC layer tightr alternately, the MAC layer originally and the interaction time delay of rlc layer can effectively be avoided.
2. the invention enables behind the division cascade data better with the coupling of eating dishes without rice or wine, reduce expense (overhead) and fill (padding), increase the efficient of eating dishes without rice or wine.
3. integrate two-layer function, reduced unnecessary function and repeat function, made agreement simplify complexity, reduced the data processing time delay.
4. in the former protocols having, the invalid re-transmission that is caused by the RLC retransmission mechanism when RLC retransmits can effectively be avoided.
5. the scheduling feature by NodeB guarantees the priority of data retransmission and guarantees professional QoS.
Description of drawings
Fig. 1 illustrates existing radio interface protocol architecture;
Fig. 2 is a UE face MAC architectural schematic;
Fig. 3 illustrates the user face protocol stack of R6;
Fig. 4 illustrates down link UTRAN face Packet Service handling process among the R6;
Fig. 5 illustrates down link UE face Packet Service handling process among the R6;
Fig. 6 illustrates the protocol infrastructure as the basis of the described scheme of embodiment of the invention 1-6;
Fig. 7 illustrates the handling process of the embodiment of the invention 1 described UTRAN face downlink business at each intermodule;
Fig. 8 illustrates the handling process of the embodiment of the invention 1 described UE face downlink business at each intermodule;
Fig. 9 illustrates the handling process of the embodiment of the invention 4 described UTRAN face downlink business at each intermodule;
Figure 10 illustrates the handling process of the embodiment of the invention 4 described UE face downlink business at each intermodule;
Figure 11 illustrates the protocol infrastructure as the basis of the described scheme of embodiment of the invention 7-12;
Figure 12 illustrates the handling process of the embodiment of the invention 7 described UTRAN face downlink business at each intermodule;
Figure 13 illustrates the handling process of the embodiment of the invention 7 described UE face downlink business at each intermodule;
Figure 14 illustrates the handling process of the embodiment of the invention 10 described UTRAN face downlink traffics at each intermodule;
Figure 15 illustrates according to the handling process of the embodiment of the invention 10 described UE face downlink business at each intermodule.
Embodiment
In LTE, the network architecture, protocol infrastructure, channel architecture etc. all will improve.And LTE the most basic a bit be exactly to have only packet switch domain service, promptly all business all will be transmitted with bag, this also means in LTE can not exist dedicated transmission channel.Along with the introducing of multimedia broadcast-multicast service (MBMS), BMC also will be cancelled.
In order to allow L2 be applicable to LTE better, on the existing protocol basis, need the some of them function is integrated, remove unnecessary function, some is used for the function of processing circuit domain service as MAC layer in the former protocols having, and function corresponding is transplanted to only local performance more performance.Simultaneously the framework of existing protocol is adjusted, allowed between MAC layer and the rlc layer alternately better, reduce unnecessary time delay, invalid re-transmission, expense (overhead) and fill (padding) etc., strengthen the performance of LTE.
Based on the low time delay of LTE, two-forty, packet-optimized demand need be done the described each side of back embodiment to the existing protocol framework and improve.
Provide embodiments of the invention 1 below, describe the protocol infrastructure of this embodiment with reference to Fig. 6.
Rlc layer moves down into NodeB and merges into the MAC+ layer with the MAC layer, and is positioned at NodeB, and the PDCP layer is positioned at the core net gateway, cancellation RNC.
With reference to Fig. 7, UTRAN face downlink business under Fig. 6 protocol infrastructure is described in the handling process of each intermodule.
■ head compression: data are flow to the wardrobe compression.
■ is multiplexing based on QoS's: the data flow to identical QoS attribute is carried out multiplexing.
The ■ scheduling: the priority according to QoS attribute and user is dispatched.
■ division cascade: carry out division cascade according to the transmission block size of eating dishes without rice or wine to allow.
■ retransmits buffer memory and management (ARQ): when the HARQ erroneous transmissions, carry out high level re-transmission, re-transmission be data behind the division cascade, i.e. PDU.Inapplicable to delay sensitive type business and multicast, broadcasting service, be only applicable to time delay non-sensitive type business in the unicast service.
■ encrypts: the data behind the division cascade are encrypted.
■ generates transmission block: add necessary header and fill to PDU to generate transmission block and be sent to physical layer via transmission channel.
■ mixes automatic repeat requests (HARQ): physical layer retransmission.Only be applicable to unicast service, be not suitable for multicast and broadcasting service.
■ physical layer process: transmission block is added cyclic redundancy check (CRC) after be sent to UE by aerial physical channel in physical layer.
As shown in Figure 7, in UTRAN, the core net gateway comprises the PDCP unit, and base station (NodeB) comprises continuous MAC+ unit and physical layer processing unit.On the core net gateway, the PDCP unit comprises a compression module.On NodeB, the MAC+ unit comprises quality-of-service based Multiplexing module, scheduler module, division cascade module, ARQ module, encrypting module, transmission block generation module and HARQ module.
With reference to Fig. 8, UE face downlink business under Fig. 6 protocol infrastructure is described in the handling process of each intermodule.
■ physical layer process:, and carry out cyclic redundancy check (CRC) from the transmission block of physical layer reception from the base station.
■ HARQ: physical layer is mixed re-transmission automatically.
■ transmission block queue distribution: data flow is routed in the corresponding queues according to quality of service attribute.
■ decomposes: remove the data head and the filling of bottom.
■ retransmits buffer memory and management (ARQ): high level retransmits automatically.
■ resets: the sequence number by data is arranged.
■ deciphering: data are decrypted.
■ reorganization: data recombination is become complete Service Data Unit (SDU, Service data unit).
■ is based on the demultiplexing of QoS: carry out demultiplexing for the data flow with same QoS attribute.
■ separates the head compression: data stream is separated the head compression.
As shown in Figure 8, user terminal (UE) comprises the high-rise processing unit of the physical layer processing unit, MAC+ unit, PDCP unit and the business datum that link to each other successively, such as the IP unit.Wherein, the MAC+ unit comprises HARQ module, transmission block queue distribution module, decomposing module, ARQ module, reordering module, deciphering module, recombination module and quality-of-service based demultiplexing module, and the PDCP unit comprises separates a compression module.As seen, on the terminal on these functional modules and the base station each functional module corresponding one by one.
Flow process and module are carried out above-mentioned arrangement and configuration mainly for following purpose:
1.MAC after the RLC integration, all be positioned at NodeB, in flow chart of data processing, avoided the interface time delay between original RLC and the MAC.
2. division cascade is moved on among the MAC and carry out, because the MAC layer can come packet is carried out division cascade according to the channel quality conditions quality, and the packet behind the division cascade can mate the transmittability of eating dishes without rice or wine better near eating dishes without rice or wine, avoid redundant filling bit, strengthened efficiency of transmission.
3. high-rise the re-transmission, promptly ARQ is placed on the execution of MAC layer, can share the information of utilizing bottom to retransmit, and the buffer status information of the base station that can know for sure simultaneously so just can be avoided the generation of invalid re-transmission better.For example after RNC sends the data of request retransmission to the base station, the transmittability restriction owing to eat dishes without rice or wine, the base station can only send the data that part need retransmit, the data that part needs to retransmit still are buffered in the buffer memory of base station, and the user does not receive that these data will status report within a certain period of time, ask these data re-transmission, RNC will send these data once more like this, and these data may also be buffered in the buffer memory of base station.ARQ is placed on the MAC layer just can avoid this situation to take place.
4. after ARQ being placed on division cascade, what promptly retransmit is packet behind the division cascade.If before being placed on division cascade, that ARQ buffer memory and re-transmission will be the whole SDU that high level gets off so, for a big SDU, carry out obtaining a plurality of PDU behind the division cascade, right as long as one of them PDU does not pass, and will retransmit whole SDU so, and efficient is very low.And just can avoid this situation after ARQ is placed on division cascade.
5. when retransmitting, also support division cascade once more as can be seen from above-mentioned Organization Chart to the data that retransmit.Because channel quality is constantly to change, therefore when data re-transmission, if the transmission block size is greater than the transmittability of eating dishes without rice or wine to allow, then the situation that data block does not send can appear, if transmission block less than the transmittability of eating dishes without rice or wine, then needs to add redundant filling bit, wasted resource.And carry out once more the generation that division cascade will be avoided this situation when data are retransmitted.
Embodiment 2 is the encryptions among the cancellation NodeB, is encrypted in the core net gateway to carry out after the head compression, and then the deciphering of corresponding UE face was carried out before separating the head compression, and other is with embodiment 1.
Embodiment 3 is that the UTRAN face is carried out based on multiplexing the moving on on the core net gateway of QoS, and other is with embodiment 1.
The protocol infrastructure of embodiment 4 is identical with embodiment's 1, and the described UTRAN face of this embodiment downlink business in the handling process of each intermodule as shown in Figure 9.After high-rise re-transmission was exchanged with division cascade, the high-rise re-transmission was the high-rise SDU that gets off of buffer memory and re-transmission, and for the data that retransmit, transmitting terminal only need be safeguarded less division cascade information, and corresponding receiving terminal reorganization is also fairly simple.Corresponding with the UTRAN face, the described UE face of this embodiment downlink business in the handling process of each intermodule as shown in figure 10.
Embodiment 5 is the encryptions among the cancellation NodeB, is encrypted in the core net gateway to carry out after the head compression, and then the deciphering of UE face was carried out before separating the head compression, and other is with embodiment 4.
Embodiment 6 carries out the UTRAN face based on multiplexing the moving on on the core net gateway of QoS, other is with embodiment 4.
The protocol infrastructure of embodiment 7 as shown in figure 11, the PDCP layer moves down into NodeB, MAC layer and rlc layer are merged into the MAC+ layer and are positioned at NodeB, RNC cancellation.
Figure 12 and 13 is illustrated under Figure 11 protocol infrastructure UTRAN face and UE face downlink business respectively in the handling process of each intermodule.
With reference to Figure 12, base station (NodeB) comprises PDCP unit, MAC+ unit and the physical layer processing unit that links to each other successively.Wherein, the PDCP unit comprises a compression module, and the MAC+ unit comprises quality-of-service based Multiplexing module, scheduler module, division cascade module, ARQ module, encrypting module, transmission block generation module and HARQ module.
With reference to Figure 13, user terminal (UE) comprises the high-rise processing unit of the physical layer processing unit, MAC+ unit, PDCP unit and the business datum that link to each other successively, such as the IP unit.Wherein, physical layer processing unit is used for the transmission block of receiving on the physical channel is carried out cyclic redundancy check (CRC).The MAC+ unit comprises HARQ module, transmission block queue distribution module, decomposing module, re-transmission buffer memory and administration module, reordering module, deciphering module, recombination module and quality-of-service based demultiplexing module.The PDCP unit comprises separates a compression module.
Embodiment 8 is that the UTRAN face is carried out based on multiplexing the moving on on the core net gateway of QoS, and then the UE face is carried out on the upper strata of PDCP layer based on the demultiplexing of QoS, and other is with embodiment 7.
Embodiment 9 is that the UTRAN face is carried out before based on the multiplexing PDCP of the moving on to layer head compression of QoS, and then the UE face is carried out after the PDCP layer is separated the head compression based on the demultiplexing of QoS, and other is with embodiment 7.
Embodiment 10 is that high-rise the re-transmission with division cascade of UTRAN face exchanged, downlink business in the handling process of each intermodule shown in Figure 14 and 15.
Embodiment 11 is that the UTRAN face is carried out based on multiplexing the moving on on the core net gateway of QoS, and then the UE face is carried out on the upper strata of PDCP layer based on the demultiplexing of QoS, and other is with embodiment 10.
Embodiment 12 is that the UTRAN face is carried out before based on the multiplexing PDCP of the moving on to layer head compression of QoS, and then the UE face is carried out after the PDCP layer is separated the head compression based on the demultiplexing of QoS, and other is with embodiment 10.
In technical scheme of the present invention, the arrangement of flow process and modules configured can be adjusted as required.The for example scheduling of UTRAN face or encryption both can be carried out before or after ARQ, also can carry out before or after division cascade, and other step was constant.Particularly, can also in embodiment 1-12, increase transformat in any one flow process and select step, for specific transactions is selected suitable transformat.Transformat is selected both can carry out after the MAC+ layer generates transmission block, also can carry out in physical layer.In addition, any one HARQ handles and can move on to the physical layer execution among the embodiment 1～12.The UE face will be adjusted accordingly module and step with the change of UTRAN face.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (28)
1, a kind of data emitting method of the base station based on evolution architecture may further comprise the steps:
A, data are carried out division cascade at the media access control MAC layer;
B, add that header generates transmission block and is sent to physical layer via transmission channel for the data behind the division cascade;
C, after adding check digit to transmission block, physical layer is sent to terminal.
2, the method for claim 1 is characterized in that also being included in the step of carrying out among step B or the C: transmission block is carried out physical layer buffer memory and re-transmission (HARQ).
3, method as claimed in claim 2 is characterized in that steps A also comprises step: the data or the data behind the division cascade that arrive the MAC layer are carried out high-rise buffer memory and re-transmission (ARQ).
4, as claim 1,2 or 3 described methods, it is characterized in that steps A further comprising the steps of at least one:
Between each data flow, carry out scheduling based on service quality QoS;
Data are encrypted.
5, the method for claim 1 is characterized in that also being included in the step of carrying out among step B or the C: for the transmission block of different business is selected suitable transformat.
6, the method for claim 1 is characterized in that the step of carrying out before also being included in division cascade described in the steps A: carry out multiplexing to the data flow that service quality QoS is identical.
7, the method for claim 1 is characterized in that the step of carrying out before also being included in steps A: at PDCP PDCP layer data are flow to the wardrobe compression.
8, method as claimed in claim 7 is characterized in that also being included in before the described head compression or the step of carrying out before division cascade described in the steps A: carry out multiplexing to the data flow that service quality QoS is identical.
9, a kind of data receive method of the terminal based on evolution architecture may further comprise the steps:
A, after carrying out verification to the transmission block from the base station, physical layer is sent to the media access control MAC layer;
B, decompose transmission block by removing data head;
C, decomposed data is sorted;
Data after D, the reorganization ordering;
E, after separating data head compression, PDCP PDCP layer is sent to high level.
10, method as claimed in claim 9, it is characterized in that step B also is included in the step of carrying out before the described decomposition transmission block: the transmission block of error of transmission or the transmission block of losing are carried out physical layer feedback, and the request base station retransmits corresponding data.
11, method as claimed in claim 10, it is characterized in that also being included in and decompose after the transmission block described in the step B or the step of carrying out after recombination data described in the step D: the data of error of transmission are carried out the high level feedback, and the request base station retransmits corresponding data.
12, method as claimed in claim 9 is characterized in that also being included in after sorting described in the step C or the step of execution before separating the head compression described in the step e: data are decrypted.
13, method as claimed in claim 9 is characterized in that also being included in described in the step D after the reorganization or after separating the head compression described in the step e or the step of execution after step e: the data flow that service quality QoS is identical is carried out demultiplexing.
14, method as claimed in claim 9, it is characterized in that step B also is included in the step of carrying out before the described decomposition transmission block: the data flow that service quality QoS is identical is routed in the same formation.
15, a kind of base station based on evolution architecture comprises continuous physical layer processing unit and media access control MAC unit, it is characterized in that
The media access control MAC unit comprises the division cascade module, is used for data are carried out division cascade; The transmission block generation module is used for adding that to the data behind the division cascade header generates transmission block and is sent to physical layer via transmission channel;
Physical layer processing unit is sent to terminal after being used for adding check digit to transmission block.
16, base station as claimed in claim 15 is characterized in that MAC unit or physical layer processing unit also comprise mixed (HARQ) module that retransmits automatically, are used for transmission block is carried out physical layer buffer memory and re-transmission.
17, base station as claimed in claim 16 is characterized in that the MAC unit also comprises re-transmission buffer memory and management (ARQ) module, and the data or the data behind the division cascade that are used for the MAC unit is received are carried out high-rise buffer memory and re-transmission.
18, as claim 15,16 or 17 described base stations, it is characterized in that the MAC unit also comprise with in the lower module at least one:
Scheduler module is used for carrying out the scheduling based on service quality QoS between each data flow;
Encrypting module is used for data are encrypted.
19, base station as claimed in claim 15 is characterized in that MAC unit or physical layer processing unit also comprise transformat selection module, are used to the transmission block of different business to select suitable transformat.
20, base station as claimed in claim 15 is characterized in that the MAC unit also comprises the Multiplexing module based on service quality QoS, and the identical data flow of service quality QoS that is used for the MAC unit is received is carried out multiplexing.
21, base station as claimed in claim 15 is characterized in that also comprising the PDCP PDCP unit that is connected on the MAC unit, and described PDCP unit comprises a compression module, is used for data are flow to the wardrobe compression.
22, base station as claimed in claim 21 is characterized in that PDCP unit or MAC unit also comprise the Multiplexing module based on service quality QoS, and the identical data flow of service quality QoS that is used for its unit, place is received is carried out multiplexing.
23, a kind of terminal based on evolution architecture, comprise the high-rise processing unit of the physical layer processing unit, media access control MAC unit, PDCP PDCP unit and the business datum that link to each other successively, wherein: physical layer processing unit is used for receiving from the transmission block of base station and carrying out verification from physical layer, it is characterized in that
The media access control MAC unit comprises decomposing module, is used for decomposing transmission block by removing data head; Reordering module is used for decomposed data is sorted; Recombination module, the data after the ordering that is used to recombinate,
PDCP PDCP unit comprises separates a compression module, is sent to high level after being used for data are separated head compression.
24, terminal as claimed in claim 23, it is characterized in that the MAC unit also comprises mixed (HARQ) module that retransmits automatically, be used for the transmission block of the error of transmission that arrives the MAC unit or the transmission block of losing are carried out physical layer feedback and ask the base station to retransmit corresponding data.
25, terminal as claimed in claim 24 is characterized in that the MAC unit also comprises re-transmission buffer memory and management (ARQ) module that is connected on decomposing module or the recombination module, is used for the data of error of transmission are carried out high level feedback and request base station re-transmission corresponding data.
26, terminal as claimed in claim 23 is characterized in that MAC unit or PDCP unit also comprise deciphering module, are used for data are decrypted.
27, terminal as claimed in claim 23 is characterized in that the high-rise processing unit of MAC unit or PDCP unit or business datum also comprises the demultiplexing module based on service quality QoS, is used for the identical data flow of service quality QoS is carried out demultiplexing.
28, terminal as claimed in claim 23 is characterized in that the MAC unit also comprises transmission block queue distribution module, is used for being sent to decomposing module after the data flow that service quality QoS is identical is routed to same formation.
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