CN1992608A - Data processing method of MAC layer and base station employing the method and user terminal - Google Patents
Data processing method of MAC layer and base station employing the method and user terminal Download PDFInfo
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Abstract
This invention discloses an MAC layer sending processing method, including: process the sending data with QoS-based multiplexing, cascading segmentation, ARQ, generating transmission block, HARQ, and other processes. The invention also discloses an MAC layer receiving processing method, including: process the receiving data with HARQ, transmission block queue distribution, decomposition, retransmission, demultiplexing, and other processes. The invention also discloses the base station and UE using the above MAC layer processing method. According to the invention, through the transmission channel types, it can use less MAC layer entities to handle transmission channel, thereby reducing the complexity of MAC layer processing, and improving the MAC layer efficiency on the business processes, thereby enhancing the system efficiency. In addition, since the MAC layer processing entities of the invention are few, making data processing steps reduced through the MAC layer, thereby reducing the data processing delay.
Description
Technical field
The present invention relates to a kind of communication technology, relate in particular to a kind of base station and user terminal of data processing method and this method of employing of MAC layer.
Background technology
UMTS (global system for mobile communications) adopts WCDMA (Wideband Code Division Multiple Access (WCDMA) access) Radio Transmission Technology on the interface aloft, in R6, be divided into 3 protocol layer: L1, L2, L3, correspond respectively to physical layer, data link layer and the network layer of OSI (open interconnected systems) reference model, wherein L2 is divided into MAC (medium access control), RLC (Radio Link control), PDCP (PDCP) and BMC (broadcasting and multicast control) again.
MAC is positioned on the physical layer of UTRAN (UMTS Terrestrial radio access network) air interface, is a 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 logic channel to carry out data transport service.At data of different types transmission service, defined one group of dissimilar logic channel in the prior art, 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, and described control channel comprises 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, and described 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 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 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 enhancing special uplink channel (E-DCH).
Therefore, the transmission channel of number of different types is arranged in the MAC layer, be used for handling dissimilar business, because the switching of the various and interchannel of transmission channel kinds has brought long time delay for the processing of data.In addition, disposed different entities for different transmission channels in the MAC layer, therefore, so Duo entity has brought complexity to system, and these entities are distributed in the different network nodes, between NodeB (base station) and RNC (radio network controller), the data interaction between them will be undertaken by Iub interface, the inevitable so time delay of length of bringing.
Summary of the invention
The purpose of this invention is to provide a kind of data processing method of MAC layer and adopt the base station and the user terminal of this method, can reduce the complexity of MAC layer, reduce the time delay of data processing.
The invention discloses a kind of transmission processing method of MAC layer, comprising:
A, the data based channel quality of eating dishes without rice or wine from the upper strata is carried out division cascade;
B, the data behind the division cascade are formed transmission block;
C, transmission block is issued transmission channel.
Before steps A, also carry out: carry out multiplexing having same services data Quality stream.
For the MAC layer that is in the base station, before steps A, also carry out: at least one user's data stream is carried out quality-of-service based scheduling.
Described method also comprises: when transmission block sends failure or loses, transmission block is retransmitted.
Described method also comprises: when the data behind the division cascade are not correctly received, these data are retransmitted.
Described steps A also comprises: the data based channel quality of eating dishes without rice or wine that retransmits is carried out division cascade again.
When the MAC layer entity is in the base station, described transmission channel is evolution downlink shared transmission channel or evolution multicast transmission channel, when the MAC layer entity was in user terminal, described transmission channel was that up shared transmission channel of evolution or evolution insert transmission channel at random.
The invention also discloses a kind of receiving handling method of MAC layer, comprising:
D, transmission block is decomposed;
E, the data of decomposing are reset;
F, the data of resetting are recombinated.
Also carry out carrying out before the described step e: when finding that the transmission block that decomposes is wrong or HARQ can not solve the bottom error of transmission time, the re-transmission buffer memory and the administrative unit of request transmitting terminal are transmitted data again.
Before execution in step D, also carry out: be routed in the corresponding queues the corresponding different service quality of different queue having same services data Quality stream.
After execution in step F, also carry out: the data flow with same services qualitative attribute is carried out demultiplexing.
The invention also discloses a kind of base station, described base station comprises MAC layer, described MAC layer comprises an E-MAC entity at least, described E-MAC entity comprises E-MAC receiving element and E-MAC transmitting element, and described E-MAC receiving element is used to handle the data that received by all uplink transport channel; Described E-MAC transmitting element is used to handle the data that sent by all descending transmission channel.
Described E-MAC receiving element comprises: the transmit queue distribution unit is used for and will puts into formation from the up shared transmission channel of evolution; Resolving cell is used for the data of formation are decomposed; Reset the unit, be used for decomposed data and reset; Recomposition unit, the data after being used to reset are recombinated; Read identity unit, receive from evolution and insert data on the transmission channel at random, be used to discern the user.
Described E-MAC transmitting element comprises: division cascade is used for data to be sent and carries out division cascade; Generate the transmission block unit, be used for the data of division cascade are generated transmission block, then transmission block is dealt into evolution downlink shared transmission channel and/or evolution multicast transmission channel.
The invention also discloses a kind of base station, described base station comprises MAC layer, described MAC layer comprises a MAC-sh entity and a MAC-c entity at least, described MAC-sh entity comprises: the MAC-sh receiving element is used to handle the data that received by the up shared transmission channel of evolution; The MAC-sh transmitting element is used to handle the data that sent by the evolution downlink shared transmission channel.Described MAC-c entity comprises: the MAC-c receiving element is used to handle by evolution and inserts the data that transmission channel receives at random; The MAC-c transmitting element is used to handle by evolution multicast transmission channel and/or paging transmission channel and or the broadcast transmission channel data that send.
Described MAC-sh receiving element comprises: the transmit queue distribution unit is used for the data that receive from the up shared transmission channel of evolution are put into formation; Resolving cell is used for the data of formation are decomposed; Reset the unit, the data after being used to reset are reset; Recomposition unit, the data after being used to reset are recombinated.
Described MAC-sh transmitting element comprises: division cascade is used for data to be sent and carries out division cascade; Generate the transmission block unit, be used for the data of division cascade are generated transmission block, then transmission block is dealt into the evolution downlink shared transmission channel.
Described MAC-c receiving element comprises: read identity unit, be used to obtain User Identity.
Described MAC-c transmitting element comprises: increase service class alias unit, be used to data to be sent to add the common service classification number; Logic channel is used for multiplexing data are sent to the evolution multicast transmission channel to the transmission channel Multiplexing Unit.
The invention also discloses a kind of user terminal, described user terminal comprises MAC layer, described MAC layer comprises an E-MAC entity at least, and described E-MAC entity comprises: the E-MAC receiving element is used to handle the data that received by all descending transmission channel; The E-MAC transmitting element is used to handle the data that sent by all uplink transport channel.
Described E-MAC receiving element comprises: the transmit queue distribution unit is used for and will puts into formation from the data of evolution downlink shared transmission channel and/or evolution multicast transmission channel; Resolving cell is used for the data of formation are decomposed; Reset the unit, be used for decomposed data and reset; Recomposition unit, the data after being used to reset are recombinated.
Described E-MAC transmitting element comprises: division cascade is used for carrying out division cascade for data to be sent on the evolution Uplink Shared Channel; Generate the transmission block unit, be used for the data of division cascade are generated transmission block, then transmission block is dealt into the up shared transmission channel of evolution; Add user identity, be used for adding User Identity for information transmitted on Random Access Channel; The access service classification is selected, and is used for adding the indication of access service classification for information transmitted on Random Access Channel.
Described on Random Access Channel information transmitted can be initial resource request or small data packets, as SMS etc.
The invention also discloses another kind of user terminal, described user terminal comprises MAC layer, and described MAC layer comprises a MAC-sh entity and a MAC-c entity at least.Described MAC-sh entity comprises: the MAC-sh receiving element is used to handle the data that received by the evolution downlink shared transmission channel; The MAC-sh transmitting element is used to handle the data that sent by the up shared transmission channel of evolution.Described MAC-c entity comprises: the MAC-c receiving element, be used to handle by multicast transmission channel and or paging transmission channel and or the data that receive of broadcast transmission channel; The MAC-c transmitting element is used to handle by evolution and inserts the data that transmission channel sends at random.
Described MAC-sh receiving element comprises: the transmit queue distribution unit is used for the data that receive from the evolution downlink shared transmission channel are put into formation; Resolving cell is used for the data of formation are decomposed; Reset the unit, the data after being used to reset are reset; Recomposition unit, the data after being used to reset are recombinated.
Described MAC-sh transmitting element comprises: division cascade is used for data to be sent and carries out division cascade; Generate the transmission block unit, be used for the data of division cascade are generated transmission block, then transmission block is dealt into the up shared transmission channel of evolution.
Described MAC-c receiving element comprises: logic channel is used for the data from the evolution multicast transmission channel are carried out demultiplexing to the transmission channel demultiplexing unit; Obtain service class alias unit, be used to obtain the common service classification number.
Described MAC-c transmitting element comprises: add identity unit, be used to data to be sent to add User Identity; Access service classification selected cell, be used for to send data add the access service classification number.
According to the present invention, handle transmission channel by using less MAC entity, thereby reduced the complexity that the MAC layer is handled, improved the efficient of MAC layer, thereby improved the efficient of system Business Processing.In addition, because the processing entities of MAC layer of the present invention is less, makes data reduce, thereby reduced the data processing time delay in the step of handling through the MAC layer.
Description of drawings
Fig. 1 shows the descending UTRAN face MAC framework with E-MAC entity of the embodiment of the invention;
Fig. 2 shows the descending UTRAN face MAC framework with MAC-sh entity and MAC-c entity of the embodiment of the invention;
Fig. 3 shows the process chart of the descending UTRAN face MAC layer of the embodiment of the invention to the dedicated logical channel transmitting data;
Fig. 4 shows the process chart of the descending UE face MAC layer of the embodiment of the invention to the dedicated logical channel transmitting data;
Fig. 5 shows the process chart of the uplink UE face MAC layer of the embodiment of the invention to the dedicated logical channel transmitting data;
Fig. 6 is the process chart of the up UTRAN face MAC layer of the embodiment of the invention to the dedicated logical channel transmitting data;
Figure 7 shows that MAC-sh send unit down link handling process in the UTRAN face MAC layer of the embodiment of the invention;
Figure 8 shows that MAC-c transmitting element down link handling process in the UTRAN face MAC layer of the embodiment of the invention;
Figure 9 shows that the UE face MAC layer MAC-sh receiving element down link handling process of the embodiment of the invention;
Figure 10 shows that the UE face MAC layer MAC-c receiving element down link handling process of the embodiment of the invention;
Figure 11 shows that the UE face MAC layer MAC-sh transmitting element uplink processing flow process of the embodiment of the invention;
Figure 12 shows that the UTRAN face MAC layer MAC-sh receiving element uplink processing flow process of the embodiment of the invention;
Figure 13 shows that the UE face MAC layer MAC-c transmitting element uplink processing flow process of the embodiment of the invention;
Figure 14 shows that the UTRAN face MAC layer MAC-c receiving element uplink processing flow process of the embodiment of the invention;
Figure 15 shows that the UTRAN face MAC layer downlink traffic process chart of the embodiment of the invention;
Figure 16 shows the UE face MAC layer down link process chart of the embodiment of the invention;
Figure 17 shows the UE face MAC layer uplink processing flow chart of the embodiment of the invention;
Figure 18 is the UTRAN face MAC layer uplink processing flow chart of the embodiment of the invention.
Embodiment
Understand and realization the present invention the existing embodiments of the invention of describing in conjunction with the accompanying drawings for the ease of persons skilled in the art.
Owing in LTE, have only Packet Service in the future, this will mean in transmission channel in the future to have only shared channel and common signal channel, shared channel can comprise up shared transmission channel of evolution and evolution downlink shared transmission channel, and common signal channel can comprise evolution and insert transmission channel, broadcast transmission channel, paging transmission channel and evolution multicast transmission channel at random.According to the present invention, as shown in Figure 1, the MAC layer entity can be integrated into an independent E-MAC entity; Perhaps as shown in Figure 2, the MAC layer entity is divided into the entity MAC-c that is used for handling the MAC-sh of shared transmission channel and is used for handling Common transport channel.
The data handling procedure of MAC layer is described at above-mentioned MAC layer framework below.
Embodiment one
In the present embodiment, have only an E-MAC entity in NodeB or UE, described E-MAC entity comprises: the E-MAC transmitting element is used to handle the data of transmission; The E-MAC receiving element is used to handle the data of reception.
1, Figure 3 shows that UTRAN face MAC layer downlink traffic handling process, can comprise an E-MAC transmitting element in the MAC layer here, and described E-MAC transmitting element is arranged in NodeB.NodeB can handle received data stream at the MAC layer when receiving the data flow that mails to the UE under it, issues UE under it by down link then, describes UTRAN face MAC layer downlink traffic handling process below with reference to Fig. 3.
Step 31, the data flow that at first will have an identical QoS attribute are carried out multiplexing.
Step 32, between a user or a plurality of user, data stream is carried out scheduling based on QoS then.
Step 33, be numbered dispatching the back data flow, and carry out division cascade, division cascade can carry out division cascade to data according to channel quality herein.The divided data size is fit to the transmission demand of eating dishes without rice or wine, and has reduced redundant bit, has increased efficiency of transmission.
Step 34, at non-delay sensitive type business, retransmit when wrong or when transmission block was lost, starting this high-rise re-transmission was ARQ (retransmitting buffer memory and administrative unit) when HARQ can not solve bottom.For the business of request retransmission, when retransmitting, this allows to carry out once more division cascade, because because the continuous variation of channel quality of eating dishes without rice or wine, the data of re-transmission are competence exertion maximal efficiency with the size of data coupling of eating dishes without rice or wine to allow to transmit the time only.When data re-transmission, carry out once more the bit that division cascade has not only reduced data redundancy, avoided the situation that can not send the larger data piece that causes because of the channel quality variation simultaneously.
Step 35, the data behind the division cascade form are fit to the transmission block of physical layer transmission, issue transmission channel then.
Step 36, carry out HARQ (physical layer mix automatically retransmit), re-transmission be transmission block.
Situation at the dedicated logical channel transmitting data has been described above, as shown in figure 15, for the data that need transmit on the multicast logic channel, the E-MAC transmitting element is done following processing: add the common service classification number, and carry out the mapping of logic channel to transmission channel; For need be in the data of paging transmission channel transmission, the E-MAC transmitting element be done following processing: by scheduling to paging transmission channel distribution time and necessary resource.Can transparent transmission EMAC entity for information transmitted on the broadcast transmission channel.
By step 31-36 as can be seen, simplified flow chart of data processing, owing in an entity, handle different kinds of business, can not only reduce the interface time delay of original each inter-entity of MAC, and reduce processing delay simultaneously at the MAC layer.In addition, the present invention also carries out the transmission of data according to the channel quality of eating dishes without rice or wine, thus the efficiency of transmission that helps eating dishes without rice or wine, and, support division cascade once more for the data that retransmit, reduced redundant filling bit.The fast situation that can not send too greatly of data when also having avoided simultaneously because of re-transmission.
2, Figure 4 shows that UE face MAC layer down link process chart, have only an E-MAC receiving element in the MAC layer here, and described E-MAC receiving element is arranged in UE.UE can handle the data that receive at UE face MAC layer when receiving by NodeB in the data that down link sends, and describes UE face MAC layer down link handling process below with reference to Fig. 4.
Step 41, carry out HARQ, re-transmission be transmission block.
Step 42, the business of different QoS is routed in the corresponding rearrangement buffer queue.
Step 43, transmission block is decomposed, remove redundant informations such as header and filling.
Step 44, at the automatic re-transmission of non-delay sensitive type business, when transmission makes a mistake, can carry out high layer ARQ and retransmit, so that solve the erroneous transmissions of HARQ.
Step 45, data are reset according to the sequence number of data block.
Step 46, the data of correct transmission are recombinated obtains the required data cell in upper strata.
Step 47, the data flow with identical QoS attribute is carried out demultiplexing.
Described the situation at the dedicated logical channel transmitting data above, as shown in figure 16, for the data that need transmit on the multicast logic channel, the E-MAC receiving element is done following processing: read the common service classification number; For need be in the data of paging transmission channel, broadcast transmission channel transmission, the E-MAC receiving element be done following processing: directly receive, do not need any processing.
3, Fig. 5 is a UE face MAC layer uplink processing flow chart.Have only an E-MAC transmitting element in the MAC layer here, and described E-MAC transmitting element is arranged in UE.UE can handle to sent data flow at UE face MAC layer when sending data flow, describes UE face MAC layer uplink processing flow process below with reference to Fig. 5.To data flow transmitted execution in step 51-55 on the up shared transmission channel of evolution.
By above-mentioned steps 51-55 as can be seen, simplified the flow chart of data processing of MAC layer.Owing in an entity, handle different kinds of business, can not only reduce the interface time delay of original each inter-entity of MAC, and reduce processing delay simultaneously.In addition, the present invention also carries out the transmission of data according to the channel quality of eating dishes without rice or wine, thus the efficiency of transmission that helps eating dishes without rice or wine, and, support division cascade once more for the data that retransmit, reduced redundant filling bit.The fast situation that can not send too greatly of data when also having avoided simultaneously because of re-transmission.
To insert the data execution in step 56-57 that transmits on the transmission channel at random in evolution.
Described the situation at the dedicated logical channel transmitting data above, as shown in figure 17, for the data that need transmit on Random Access Channel, the E-MAC transmitting element is done following processing: add user identity, add access category.
4, Fig. 6 is a UTRAN face MAC layer uplink processing flow chart.Have only an E-MAC receiving element in the MAC layer here, and described E-MAC receiving element is arranged in NodeB.NodeB is when receiving the data of UE transmission, and the data that meeting is treated reception at UTRAN face MAC layer are handled, and describe UTRAN face MAC layer uplink processing flow process below with reference to Fig. 6.To the data execution in step 61-67 that on the up shared transmission channel of evolution, transmits.
Step 61, carry out HARQ, re-transmission be transmission block.
Step 62, the business of different QoS is routed in the corresponding rearrangement buffer queue.
Step 63, transmission block is decomposed, remove redundant informations such as header and filling.
Step 64, at the automatic re-transmission of non-delay sensitive type business, when transmission makes a mistake, can carry out high layer ARQ and retransmit, so that solve the erroneous transmissions of HARQ.
Step 65, data are reset according to the sequence number of data block.
Step 66, the data of correct transmission are recombinated obtains the required data cell in upper strata.
Step 67, the data flow with identical QoS attribute is carried out demultiplexing.
This flow process because the MAC entity is reduced to one, when at the MAC layered data processing, has reduced the interface time delay of each inter-entity of MAC layer corresponding to uplink UE face business processing flow, has also reduced the time delay and the processing delay of data re-transmission simultaneously.
To insert the data execution in step of transmitting on the transmission channel 68 at random in evolution.
Step 68, the unicast data from the user is read user identity to distinguish different user.
Described the situation at the dedicated logical channel transmitting data above, as shown in figure 18, for the data that need transmit on Random Access Channel, the E-MAC receiving element is done following processing: read user identity.
Embodiment two
For the transmitting terminal among the embodiment one, ARQ functional module and division cascade functional module are exchanged, and then the reorganization of receiving terminal correspondence and ARQ exchange.That ARQ buffer memory and re-transmission will be the whole SDU (Service Data Unit) that high level gets off like this, for the same segmentation among the SDU, the situation of division cascade can not occur once more.Thereby simplified the complexity of cutting apart, the data head information of maintenance is less.
Embodiment three
For the descending UTRAN face among the embodiment one, cancel ARQ in the MAC layer, ARQ is placed on NodeB upper layer network equipment does, as GW (core net gateway).Then descending UE face also is put into high level to reorganization accordingly and does.At the uplink UE face, MAC layer cancellation ARQ is put into high level to ARQ and does accordingly, and then up UTRAN face also is put into the position corresponding with the UE face to reorganization accordingly and does.
During owing to direct-cut operation between the base station, data in the original hase standing-meeting deletion buffer memory, the user is easy to take place loss of data like this, does if ARQ is put into upper layer device, help the mobile management of UE, also can utilize high layer ARQ to retransmit the harmless transmission that guarantees data for the data of losing simultaneously.
Embodiment four
In the present embodiment, comprise MAC-sh entity and MAC-c entity respectively at NodeB and UE, described MAC-sh entity comprises: the MAC-sh transmitting element is used to handle the data of transmission; The MAC-sh receiving element is used to handle the data of reception.Described MAC-c entity comprises: the MAC-c transmitting element is used to handle the data of transmission; The MAC-c receiving element is used to handle the data of reception.
1, be illustrated in figure 7 as that MAC-sh send unit down link handling process in the UTRAN face MAC layer, the MAC layer here comprises these 2 kinds of entities of MAC-sh, MAC-c, and all is arranged in NodeB.The MAC-sh entity handles is shared transmission channel, and MAC-c handles Common transport channel.NodeB is when receiving the data flow that mails to the UE under it, can handle received data stream by the MAC-sh transmitting element at the MAC layer, issue UE under it by down link then, describe UTRAN face MAC layer downlink traffic handling process below with reference to Fig. 7.
By above-mentioned steps 71-76 as can be seen, simplified the flow chart of data processing of MAC layer.Owing in an entity, handle different kinds of business, can not only reduce the interface time delay of original each inter-entity of MAC, and reduce processing delay simultaneously.In addition, the present invention also carries out the transmission of data according to the channel quality of eating dishes without rice or wine, thus the efficiency of transmission that helps eating dishes without rice or wine, and, support division cascade once more for the data that retransmit, reduced redundant filling bit.The fast situation that can not send too greatly of data when also having avoided simultaneously because of re-transmission.
2, Figure 8 shows that MAC-c transmitting element down link handling process in the UTRAN face MAC layer.When NodeB is receiving the multicast packet that mails to the UE under it, can handle institute's receiving multicast data by the MAC-c transmitting element at the MAC layer, issue UE under it by down link then, describe UTRAN face MAC layer downlink traffic handling process below with reference to Fig. 8.
Step 82, multicast packet is carried out TCTF multiplexing (logic channel is multiplexing to transmission channel).
3, Figure 9 shows that UE face MAC layer MAC-sh receiving element down link handling process.UE can handle the data flow that receives by the MAC-sh receiving element at UE face MAC layer when receiving by Node B in the data flow that down link sends, and describes UE face MAC layer down link handling process below with reference to Fig. 9.
Step 91, carry out HARQ, re-transmission be transmission block.
Step 92, the business of different QoS is routed in the corresponding rearrangement buffer queue.
Step 93, transmission block is decomposed, remove redundant informations such as header and filling.
Step 94, at the automatic re-transmission of non-delay sensitive type business, when transmission makes a mistake, can carry out receiving buffer memory and retransmission management, so that solve the erroneous transmissions of HARQ.
Step 95, number data are reset according to sequence of blocks of data.
Step 96, the data of correct transmission are recombinated obtains the required traffic packets in upper strata.
Step 97, the data flow with identical QoS attribute is carried out demultiplexing.
4, Figure 10 shows that UE face MAC layer MAC-c receiving element down link handling process.UE can handle the multicast packet that receives by the MAC-c receiving element at UE face MAC layer when receiving by NodeB at the multicast packet that down link sends, and describes UE face MAC layer down link handling process below with reference to Figure 10.
5, Figure 11 shows that UE face MAC layer MAC-sh transmitting element uplink processing flow process.UE can send the unit to handle to sent data flow by MAC-sh at UE face MAC layer when receiving high-rise data flow, describes UE face MAC layer uplink processing flow process below with reference to Figure 11.
Step 111, the data flow with identical QoS attribute is placed in the same buffer memory.
Carry out division cascade after step 112, the data number got off in the upper strata, division cascade can carry out division cascade to data according to channel quality herein.The divided data size is fit to the transmission demand of eating dishes without rice or wine, and has reduced redundant bit, has increased efficiency of transmission.
Step 113, at non-delay sensitive type business, retransmit when wrong or when transmission block is lost, start this high-rise re-transmission when HARQ can not solve bottom.For the business of request retransmission, when retransmitting, this allows to carry out once more division cascade, because because the continuous variation of channel quality of eating dishes without rice or wine, the data of re-transmission are competence exertion maximal efficiency with the size of data coupling of eating dishes without rice or wine to allow to transmit the time only.When data re-transmission, carry out once more the bit that division cascade has not only reduced data redundancy, avoided causing to send the situation of larger data piece simultaneously because of the channel quality variation.
Step 114, the data behind the division cascade form are fit to the transmission block of physical layer transmission, issue transmission channel then.
Step 115, carry out HARQ (physical layer mix automatically retransmit), re-transmission be transmission block
By above-mentioned steps 111-115 as can be seen, simplified the flow chart of data processing of MAC layer.Owing in an entity, handle different kinds of business, can not only reduce the interface time delay of original each inter-entity of MAC, and reduce processing delay simultaneously.In addition, the present invention also carries out the transmission of data according to the channel quality of eating dishes without rice or wine, thus the efficiency of transmission that helps eating dishes without rice or wine, and, support division cascade once more for the data that retransmit, reduced redundant filling bit.The fast situation that can not send too greatly of data when also having avoided simultaneously because of re-transmission.
6, Figure 12 shows that UTRAN face MAC layer MAC-sh receiving element uplink processing flow process.The MAC layer here comprises these 2 kinds of entities of MAC-sh, MAC-c, and all is arranged in NodeB.NodeB can handle in the data flow that UTRAN face MAC layer is treated reception by the MAC-sh receiving element when receiving the data flow of UE transmission, describes UTRAN face MAC layer uplink processing flow process below with reference to Figure 12.
This flow process is corresponding to uplink UE face business processing flow.
7, Figure 13 shows that UE face MAC layer MAC-c transmitting element uplink processing flow process.
8, Figure 14 shows that UTRAN face MAC layer MAC-c receiving element uplink processing flow process.
According to present embodiment, the MAC processing entities is divided into the MAC-c that is used to handle the MAC-sh of shared channel and handles common signal channel, thereby has simplified the complexity of handling shared channel and handling common signal channel.Because shared channel separates with common signal channel, the part resource reservation has been given common signal channel, and this has also had simplification to a certain degree for scheduling.
Embodiment five: for transmitting terminal MAC-sh entity handles flow process among the embodiment four, ARQ functional module and division cascade functional module are exchanged, and then exchange with ARQ in the receiving terminal reorganization accordingly.
Embodiment six: for descending UTRAN face MAC-sh entity handles flow process among the embodiment four, cancel ARQ in the MAC layer, ARQ is put into NodeB upper layer network equipment does, then descending UE face also is put into high level to reorganization accordingly and does.In uplink UE face MAC-sh entity handles flow process, MAC layer cancellation ARQ is put into high level to ARQ and does accordingly, and then up UTRAN face also is put into the position corresponding with the UE face to reorganization accordingly and does.
The invention also discloses a kind of base station, described base station comprises MAC layer, described MAC layer comprises an E-MAC entity at least, described E-MAC entity comprises the transmission processing unit and receives processing unit, described reception processing unit is the E-MAC receiving element that is used to handle the data that received by all uplink transport channel, and described transmission processing unit is the E-MAC transmitting element that is used to handle the data that sent by all descending transmission channel.
Described E-MAC receiving element comprises: the transmit queue distribution unit is used for the data that insert the transmission letter from the up shared transmission channel of evolution and/or evolution are at random put into formation; Resolving cell is used for the data of formation are decomposed; Reset the unit, the data that are used to decompose are reset; Recomposition unit, the data that are used to reset are recombinated.Described E-MAC transmitting element comprises: division cascade is used for data to be sent and carries out division cascade; Generate the transmission block unit, be used for the data of division cascade are generated transmission block, then transmission block is dealt into evolution downlink shared transmission channel and/or evolution multicast transmission channel.
The invention also discloses another kind of base station, described base station comprises MAC layer, described MAC layer comprises a MAC-sh entity and a MAC-c entity at least, described MAC-sh entity and MAC-c entity comprise the transmission processing unit respectively and receive processing unit, described reception processing unit is to be used to handle the MAC-sh receiving element of the data that received by the up shared transmission channel of evolution and to be used to handle the MAC-c receiving element that is inserted the data of transmission channel reception by evolution at random, and described transmission processing unit is the MAC-c transmitting element that is used to handle the MAC-sh transmitting element of the data that sent by the evolution downlink shared transmission channel and is used to handle the data that sent by the evolution multicast transmission channel.
Described MAC-sh receiving element comprises: the transmit queue distribution unit is used for the data that receive from the up shared transmission channel of evolution are put into formation; Resolving cell is used for the data of formation are decomposed; Reset the unit, the data that are used to decompose are reset; Recomposition unit, the data after being used to reset are recombinated.Described MAC-sh transmitting element comprises: division cascade is used for data to be sent and carries out division cascade; Generate the transmission block unit, be used for the data of division cascade are generated transmission block, then transmission block is dealt into the evolution downlink shared transmission channel.Described MAC-c receiving element comprises: read identity unit, be used to obtain User Identity.Described MAC-c transmitting element comprises: increase service class alias unit, be used to data to be sent to add the common service classification number; Logic channel is used for multiplexing data are sent to the evolution multicast transmission channel to the transmission channel Multiplexing Unit.
The invention also discloses a kind of user terminal, described user terminal comprises MAC layer, described MAC layer comprises an E-MAC entity at least, described E-MAC entity comprises the transmission processing unit and receives processing unit, described reception processing unit is the E-MAC receiving element that is used to handle the data that received by all descending transmission channel, and described transmission processing unit is the E-MAC transmitting element that is used to handle the data that sent by all uplink transport channel.
Described E-MAC receiving element comprises: the transmit queue distribution unit is used for the data that insert transmission channel from evolution downlink shared transmission channel and/or evolution are at random put into formation; Resolving cell is used for the data of formation are decomposed; Reset the unit, the data that are used to decompose are reset; Recomposition unit, the data after being used to reset are recombinated.Described E-MAC transmitting element comprises: division cascade is used for data to be sent and carries out division cascade; Generate the transmission block unit, be used for the data of division cascade are generated transmission block, then transmission block is dealt into up shared transmission channel of evolution and/or evolution and inserts the transmission letter at random.
The invention also discloses another kind of user terminal, described user terminal comprises MAC layer, described MAC layer comprises a MAC-sh entity and a MAC-c entity at least, described MAC-sh entity and MAC-c entity comprise the transmission processing unit respectively and receive processing unit, described reception processing unit is the MAC-sh receiving element and the MAC-c receiving element that is used to handle the data that received by multicast transmission channel that is used to handle by the data of evolution downlink shared transmission channel reception, and described transmission processing unit is to be used to handle the MAC-sh transmitting element of the data that sent by the up shared transmission channel of evolution and to be used to handle the MAC-c transmitting element that is inserted the data of transmission channel transmission by evolution at random.
Described MAC-sh receiving element comprises: the transmit queue distribution unit is used for the data that receive from the evolution downlink shared transmission channel are put into formation; Resolving cell is used for the data of formation are decomposed; Reset the unit, the data that are used to decompose are reset; Recomposition unit, the data after being used to reset are recombinated.Described MAC-sh transmitting element comprises: division cascade is used for data to be sent and carries out division cascade; Generate the transmission block unit, be used for the data of division cascade are generated transmission block, then transmission block is dealt into the up shared transmission channel of evolution.Described MAC-c receiving element comprises: logic channel is used for the data from the evolution multicast transmission channel are carried out demultiplexing to the transmission channel demultiplexing unit; Obtain service class alias unit, be used to obtain the common service classification number.Described MAC-c transmitting element comprises: add identity unit, be used to data to be sent to add User Identity; Access service classification selected cell, be used for to send data add the access service classification number.
According to the present invention, by the simplification of transmission channel kinds, and use the entity of less MAC layer to handle transmission channel, thereby reduced the complexity that the MAC layer is handled, improved the efficient of MAC layer, thereby improved the efficient of system Business Processing.In addition, because the processing entities of MAC layer of the present invention is less, makes data reduce, thereby reduced the data processing time delay in the step of handling through the MAC layer.
Though described the present invention by embodiment, those of ordinary skills know, under the situation that does not break away from god of the present invention and essence, just can make the present invention that many distortion and variation are arranged, and scope of the present invention is limited to the appended claims.
Claims (30)
1, a kind of transmission processing method of MAC layer is characterized in that, comprising:
A, the data from the upper strata are carried out division cascade;
B, the data behind the division cascade are formed transmission block;
C, transmission block is issued transmission channel.
2, the transmission processing method of MAC layer according to claim 1 is characterized in that, described steps A also comprises: eat dishes without rice or wine channel quality and schedule information of upper strata data based carried out division cascade.
3, the transmission processing method of MAC layer according to claim 1 is characterized in that, also carries out before steps A: carry out multiplexing to having same services data Quality stream.
4, the transmission processing method of MAC layer according to claim 1 is characterized in that, for the MAC layer that is in the base station, also carries out before steps A: at least one user's data stream is carried out quality-of-service based scheduling.
5, the transmission processing method of MAC layer according to claim 1 is characterized in that, described method also comprises: when transmission block sends failure or loses, transmission block is retransmitted.
6, the transmission processing method of MAC layer according to claim 1 is characterized in that, described method also comprises: when the data behind the division cascade are not correctly received, these data are retransmitted.
7, the transmission processing method of MAC layer according to claim 6 is characterized in that, described steps A also comprises: data based channel quality and the schedule information of eating dishes without rice or wine that retransmits carried out division cascade again.
8, according to claim 1 to the 7 transmission processing method of arbitrary described MAC layer wherein, it is characterized in that, when the MAC layer entity is in the base station, described transmission channel is evolution downlink shared transmission channel or evolution multicast transmission channel, when the MAC layer entity was in user terminal, described transmission channel was that up shared transmission channel of evolution or evolution insert transmission channel at random.
9, a kind of receiving handling method of MAC layer is characterized in that, comprising:
D, transmission block is decomposed;
E, the data of decomposing are reset;
F, the data of resetting are recombinated.
10, the receiving handling method of MAC layer according to claim 9, it is characterized in that, also carry out carrying out before the described step e: when finding that the transmission block that decomposes is wrong or HARQ can not solve the bottom error of transmission time, the re-transmission buffer memory and the administrative unit of request transmitting terminal are transmitted data again.
11, the receiving handling method of MAC layer according to claim 9 is characterized in that, also carries out before execution in step D: spread and deliver in the corresponding queues different queue correspondence different service quality having the same services data Quality.
12, the receiving handling method of MAC layer according to claim 9 is characterized in that, also carries out after execution in step F: the data flow with same services qualitative attribute is carried out demultiplexing.
13, a kind of base station, described base station comprises MAC layer, it is characterized in that, described MAC layer comprises an E-MAC entity at least, described E-MAC entity comprises E-MAC receiving element and E-MAC transmitting element, and described E-MAC receiving element is used to handle the data that received by all uplink transport channel; Described E-MAC transmitting element is used to handle the data that sent by all descending transmission channel.
14, base station according to claim 13 is characterized in that, described E-MAC receiving element comprises: transmission block queue distribution unit, be used for from the up shared transmission channel of evolution and/or evolution at random the data of transmission channel put into formation; Resolving cell is used for the data of formation are decomposed; Reset the unit: be used for decomposed data is reset; Recomposition unit, the data after being used to reset are recombinated.
15, base station according to claim 13 is characterized in that, described E-MAC transmitting element comprises: division cascade is used for data to be sent and carries out division cascade; Generate the transmission block unit, be used for the data of division cascade are generated transmission block, then transmission block is dealt into evolution downlink shared transmission channel and/or evolution multicast transmission channel.
16, a kind of base station, described base station comprises MAC layer, it is characterized in that, described MAC layer comprises a MAC-sh entity and a MAC-c entity at least,
Described MAC-sh entity comprises: the MAC-sh receiving element is used to handle the data that received by the up shared transmission channel of evolution; The MAC-sh transmitting element is used to handle the data that sent by the evolution downlink shared transmission channel;
Described MAC-c entity comprises: the MAC-c receiving element is used to handle by evolution and inserts the data that transmission channel receives at random; The MAC-c transmitting element is used to handle by evolution multicast transmission channel and/or paging transmission channel and or the data that send of broadcast transmission channel.
17, base station according to claim 16 is characterized in that, described MAC-sh receiving element comprises: the transmit queue distribution unit is used for the data that receive from the up shared transmission channel of evolution are put into formation; Resolving cell is used for the data of formation are decomposed; Reset the unit, be used for decomposed data and reset; Recomposition unit, the data after being used to reset are recombinated.
18, base station according to claim 16 is characterized in that, described MAC-sh transmitting element comprises: division cascade is used for data to be sent and carries out division cascade; Generate the transmission block unit, be used for the data of division cascade are generated transmission block, then transmission block is dealt into the evolution downlink shared transmission channel.
19, base station according to claim 16 is characterized in that, described MAC-c receiving element comprises: read identity unit, be used to obtain User Identity.
20, base station according to claim 16 is characterized in that, described MAC-c transmitting element comprises: increase service class alias unit, be used to data to be sent to add the common service classification number; Logic channel is used for the data that send are carried out the mapping of logic channel to transmission channel to the transmission channel map unit.
21, a kind of user terminal, described user terminal comprises MAC layer, it is characterized in that, described MAC layer comprises an E-MAC entity at least, described E-MAC entity comprises: the E-MAC receiving element is used to handle the data that received by all descending transmission channel; The E-MAC transmitting element is used to handle the data that sent by all uplink transport channel.
22, user terminal according to claim 21 is characterized in that, described E-MAC receiving element comprises: the transmit queue distribution unit is used for and will puts into formation from the data of evolution downlink shared transmission channel and/or evolution multicast transmission channel; Resolving cell is used for the data of formation are decomposed; Reset the unit, be used for decomposed data and reset; Recomposition unit, the data after being used to reset are recombinated.
23, user terminal according to claim 21 is characterized in that, described E-MAC transmitting element comprises: division cascade is used for data to be sent and carries out division cascade; Generate the transmission block unit, be used for the data of division cascade are generated transmission block, then transmission block is dealt into up shared transmission channel of evolution and/or evolution Random Access Channel.
24, user terminal according to claim 21 is characterized in that, described EMAC transmitting element further comprises: add identity unit, be used for the data that send on Random Access Channel are added User Identity; Access service classification unit is used for the data that send on Random Access Channel are added the access service classification number.
25, user terminal according to claim 24 is characterized in that, the data of transmitting on Random Access Channel can be initial resource request information or small data packets.
26, a kind of user terminal, described user terminal comprises MAC layer, it is characterized in that, described MAC layer comprises a MAC-sh entity and a MAC-c entity at least,
Described MAC-sh entity comprises: the MAC-sh receiving element is used to handle the data that received by the evolution downlink shared transmission channel; The MAC-sh transmitting element is used to handle the data that sent by the up shared transmission channel of evolution;
Described MAC-c entity comprises: the MAC-c receiving element, be used to handle by multicast transmission channel and or paging transmission channel and or the data that receive of broadcast transmission channel; The MAC-c transmitting element is used to handle by evolution and inserts the data that transmission channel sends at random.
27, user terminal according to claim 26 is characterized in that, described MAC-sh receiving element comprises: the transmit queue distribution unit is used for the data that receive from the evolution downlink shared transmission channel are put into formation; Resolving cell is used for the data of formation are decomposed; Reset the unit, the data that are used to decompose are reset; Recomposition unit, the data after being used to reset are recombinated.
28, user terminal according to claim 26 is characterized in that, described MAC-sh transmitting element comprises: division cascade is used for data to be sent and carries out division cascade; Generate the transmission block unit, be used for the data of division cascade are generated transmission block, then transmission block is dealt into the up shared transmission channel of evolution.
29, user terminal according to claim 26 is characterized in that, described MAC-c receiving element comprises: logic channel is used for the data from the evolution multicast transmission channel are carried out demultiplexing to the transmission channel demultiplexing unit; Obtain service class alias unit, be used to obtain the common service classification number.
30, user terminal according to claim 26 is characterized in that, described MAC-c transmitting element comprises: add identity unit, be used to data to be sent to add User Identity; Access service classification selected cell, be used for to send data add the access service classification number.
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| CN 200610003524 CN1992608A (en) | 2005-12-31 | 2006-02-07 | Data processing method of MAC layer and base station employing the method and user terminal |
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