CN101141445A - Transmission method and sending terminal equipment of transmission unit - Google Patents
Transmission method and sending terminal equipment of transmission unit Download PDFInfo
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Abstract
The present invention provides a transmission method of a transmission unit and an equipment of a transmitting terminal. The present invention has the key points that on the basis of a priority scheduling principle of a transmission unit containing control information, a transmitting terminal performs transmission scheduling to the transmission units needing to be transmitted, and transmits the transmission units according to the transmission scheduling result. The transmitting terminal in the present invention enables the control information to be timely transmitted to the receiving terminal, such as a status report, a reset PDU and a reset acknowledgement PDU, which are timely transmitted to the receiving terminal; the realization method is flexible, for example, the priority scheduling process can be realized on the RLC layer, the MAC layer of the transmitting terminal, and can also be synchronously realized on the RLC layer and the MAC layer, thus the buffer cache of the receiving terminal is saved, the time delay of the data retransmission is reduced, and the peer entities of the transmitting terminal and the receiving terminal timely realize synchronization; thereby the purposes to improve the EUTRAN system performance as well as the EUTRAN system through the technical proposal provided by the present invention are realized.
Description
Technical field
The present invention relates to the network communications technology field, be specifically related to a kind of transmission method and sending ending equipment of transmission unit.
Background technology
The research work of WCDMA (Wideband Code Division Multiple Access (WCDMA) access) is since early 1990s.Since 98 years till now, the technical specification of WCDMA system passed by Release 99, Release 4, Release 5, Release 6 these several stages, standardization effort about Release 7 comes into effect at present, meanwhile, the research of LTE (Long Term Evolution Long Term Evolution) has also begun to become gradually the new focus of standardization effort.
LTE will be brand-new from the system framework to the physical layer, and LTE is intended to provide for the user service of higher rate, better performance.UTRAN among the LTE is called as E-UTRAN (evolved UMTSTerrestrial Radio Access Network, the UMTS Terrestrial radio access network of evolution) at present.
In the EUTRAN system, rlc layer is displaced downwardly to the base station, the RNC cancellation, and aGW (IAD) is positioned at core net.The places different with the UTRAN system comprise: it is static or semi-static that the RLC in the UTRAN system is cut apart, and is to wait size as AMD PDU, and in the EUTRAN system, the cutting apart of rlc layer is based on instant channel quality, promptly cuts apart to be the non-size that waits.
The protocol stack architecture of EUTRAN system user face is different with the protocol stack architecture of UTRAN system user face, and its difference is shown in accompanying drawing 1, accompanying drawing 2.
Fig. 1 is the protocol stack architecture of EUTRAN system user face, and the protocol stack of UE in the EUTRAN system (subscriber equipment) comprises: PHY (physical layer), MAC (medium access control layer), RLC (wireless chain control layer), PDCP (PDCP).The protocol stack of ENodeB comprises: PHY (physics) layer, MAC (medium access control) layer, RLC (Radio Link control) layer.AGW communicates by PDCP and UE.
Fig. 2 is the protocol stack architecture of UTRAN system user face, and the rlc layer in the UTRAN system is positioned at RNC, and the MAC-d entity is positioned at RNC in the MAC layer, and the MAC-hs entity is positioned at the base station.
In the UTRAN system, network side to the method that user terminal sends control PDU is: the AMD PDU of rlc layer and control PDU such as status report etc., send to the MAC-d entity by dedicated logical channel, AMD PDU, control PDU etc. is formed MAC-d stream, i.e. one group of MAC-d PDU by the MAC-d entity.RNC sends to MAC-d stream the MAC-hs entity of base station MAC layer by the Iub interface of itself and base station.Above-mentioned status report is made up of one group of status PDU, and status PDU can be carried among the AMD PDU, also can generate status PDU separately.After the MAC-hs entity receives MAC-d stream, the MAC-dPDU in the MAC-d stream is formed MAC-hs PDU, and deliver to the HARQ entity and carry out physical layer transmission, receive correct up to user terminal.User terminal is operated accordingly according to the control PDU of its reception, as the deletion of carrying out data according to the status report that receives and re-transmission etc.User terminal is the inverse process of said process to the method that network side sends control PDU, no longer describes in detail at this.
The data format of above-mentioned MAC-hs PDU as shown in Figure 3.A MAC-hs PDU among Fig. 3 is made up of MAC-hs head and a plurality of MAC-d PDU.The above-mentioned RLC data PDU that carries status PDU as shown in Figure 4.Among Fig. 4, Sequence number represents sequence number, and P represents the poll bit, HE represents an expansion type, and E represents extended bit, and Length indicator represents Length Indication, Data represents data, and PADor a piggybacked STATUS PDU represents to fill or carrier state PDU.The status PDU of above-mentioned independent generation as shown in Figure 5.Among Fig. 5, D/C represents that this PDU is that data PDU is still controlled PDU, and PDUTYPE represents the PDU type, and SUFI represents super territory, and PAD represents to fill.
In the transmission method of above-mentioned control PDU, when the MAC-hs entity is formed MAC-hs PDU, be from the order that RNC sends to the base station MAC-d PDU to be inserted the MAC-hs PDU according to MAC-d stream, not enough part adopts fill method to form MAC-hs PDU.Like this, the control PDU of rlc layer such as status PDU, reset PDU etc. may be scheduled for the back and just be transmitted, control PDU can not in time be transmitted, thereby cause some problems, can not in time be transmitted that then the data of transmitting terminal can not be deleted and retransmit timely as status PDU, like this, both take the buffer memory of transmitting terminal, increased the time delay of data re-transmission again, influenced quality of service; Reset PDU can not in time be transmitted for another example, and the peer-entities at two ends just can not be in time synchronous, thereby causes professional interruption.
Because the system architecture in the EUTRAN system is brand-new, so the transmission method of above-mentioned control PDU can not directly apply in the EUTRAN system.If only the system architecture according to the EUTRAN system simply improves above-mentioned control PDU transmission method, then still can there be the problems referred to above that exist in the UTRAN system.The transmission method of control PDU in the EUTRAN system awaits further perfect.
Summary of the invention
The objective of the invention is to, a kind of transmission method and sending ending equipment of transmission unit is provided, the control information that transmitting terminal is sent can in time transfer to receiving terminal, thereby has realized raising EUTRAN systematic function, improves the purpose of EUTRAN system.
For achieving the above object, the transmission method of a kind of transmission unit provided by the invention comprises:
A, transmitting terminal are based on the principle of the transmission unit priority scheduling that comprises control information, and the transmission unit that needs are sent carries out transmitting and scheduling, and sends transmission unit according to the transmitting and scheduling result.
The technical scheme of following method is optional technical scheme.
Described step a comprises:
Transmitting terminal Radio Link control rlc layer priority scheduling contains the transmission unit of control information, and the transmission unit that preferentially will contain control information is sent to media interviews control MAC layer.
The step that the described transmission unit that preferentially will contain control information is sent to the MAC layer comprises:
The transmitting terminal rlc layer will be controlled PDU and have precedence over business datum and insert in the RLC data PDU, and the RLC data PDU that will carry control PDU transfers to the MAC layer; And/or
Transmitting terminal rlc layer priority scheduling control PDU will control PDU and have precedence over the RLC data PDU and be sent to the MAC layer.
The transmitting terminal rlc layer is inserted described business datum in the RLC data PDU after over-segmentation, perhaps the transmitting terminal rlc layer is inserted described business datum in the RLC data PDU through behind the division cascade.
The RLC data PDU that carries control PDU comprises: carry status PDU and/or reset PDU and/or reset and confirm the RLC data PDU of PDU.
Described step a comprises:
The RLC PDU that transmitting terminal MAC layer preferentially will contain control information is multiplexed with MAC PDU, and is sent to the HARQ entity and carries out physical layer transmission.
The described transmission unit that comprises control information comprises: the transmission unit that comprises control information that needs retransmit and/or the transmission unit that comprises control information of non-re-transmission.
Described method also comprises: when comprising the transport block transmission failure of control information, transmitting terminal lower floor request transmitting terminal upper strata retransmits the transmission unit that comprises control information.
The invention provides a kind of sending ending equipment, described sending ending equipment comprises:
Scheduler module: be used to adopt the principle of the transmission unit priority scheduling that comprises control information, the transmission unit that needs are transmitted carries out transmitting and scheduling;
Sending module: be used for sending transmission unit according to described transmitting and scheduling result.
The technical scheme of following sending ending equipment is optional technical scheme.
When being provided with scheduler module and sending module in the rlc layer of sending ending equipment, described scheduler module comprises RLC scheduling sublayer module, and described sending module comprises RLC scheduling sublayer module;
RLC scheduling sublayer module: be used for control PDU with the transmitting terminal rlc layer and have precedence over business datum and insert in the RLC data PDU; And/or the control PDU of transmitting terminal rlc layer carried out priority scheduling;
RLC sends submodule: the RLC data PDU that is used for carrying control PDU transfers to the MAC layer; And/or the control PDU of priority scheduling transferred to the MAC layer.
When being provided with scheduler module and sending module in the MAC of the sending ending equipment layer, described scheduler module comprises MAC scheduling sublayer module, and described sending module comprises that MAC sends submodule;
MAC scheduling sublayer module: be used for the preferential RLCPDU that contains control information and be multiplexed with MAC PDU with transmitting terminal MAC layer;
MAC sends submodule: be used for that MAC PDU is sent to the HARQ entity and carry out physical layer transmission.
Described equipment also comprises:
Request module: be used for when the transport block transmission failure that comprises control information, request transmitting terminal upper strata retransmits the transmission unit that comprises control information.
Description by technique scheme as can be known, the transmitting terminal among the present invention carries out transmitting and scheduling by the transmission unit priority scheduling principle that employing comprises control information to transmission unit, the control information that transmitting terminal is sent can in time transfer to receiving terminal; Transmission method of the present invention can be realized, can realize at the MAC layer, also can realize that all implementation is flexible at RLC and MAC layer at the rlc layer of transmitting terminal; When the control information among the present invention is status report, the present invention can make the transmitting terminal that sends data in time carry out data deletion and retransmission process, thereby has saved the buffer memory of transmitting terminal, has improved the utilance of transmitting terminal buffer memory, reduce the time delay of data re-transmission simultaneously, improved quality of service; When the control information among the present invention is reset PDU, resets when confirming PDU, the present invention makes the peer-entities of receiving terminal and transmitting terminal can be in time synchronous, thereby has effectively avoided the phenomenon of service disconnection; Thereby realized raising EUTRAN systematic function by technical scheme provided by the invention, improved the purpose of EUTRAN system.
Description of drawings
Fig. 1 is the protocol stack architecture schematic diagram of EUTRAN system user face;
Fig. 2 is the protocol stack architecture schematic diagram of UTRAN system user face;
Fig. 3 is the data format schematic diagram of the MAC-hs PDU of prior art;
Fig. 4 is the AMD PDU schematic diagram that carries status PDU of prior art;
Fig. 5 is the status PDU schematic diagram of prior art;
Fig. 6 is the method flow diagram of the embodiment of the invention;
Fig. 7 is the form schematic diagram one of the RLC PDU of the embodiment of the invention;
Fig. 8 is the form schematic diagram two of the RLC PDU of the embodiment of the invention;
Fig. 9 is the form schematic diagram three of the RLC PDU of the embodiment of the invention.
Embodiment
The present invention provides effectively feasible technical scheme of a cover for the transmission of EUTRAN system transmissions unit, and the transmission method of transmission unit provided by the invention as shown in Figure 6.In Fig. 6, at first, the transmitting terminal that sends control information adopts the transmission unit priority scheduling principle that comprises control information that transmission unit is carried out transmitting and scheduling by when sending transmission unit, and then, transmitting terminal sends transmission unit according to the transmitting and scheduling result.Like this, control information can in time transfer to receiving terminal.
In technical scheme of the present invention, transmitting terminal realizes that the position of prioritised transmission scheduling is relevant with the actual agreements framework of EUTRAN system.Agreement framework based on present EUTRAN system, it is very flexible that transmitting terminal of the present invention carries out the specific implementation method of prioritised transmission scheduling, can only when rlc layer carries out the transmission unit scheduling, adopt the transmission unit priority scheduling principle that comprises control information that the transmission unit in the formation is carried out transmitting and scheduling as transmitting terminal; Transmitting terminal can adopt the transmission unit priority scheduling principle that comprises control information that the transmission unit in the formation is carried out transmitting and scheduling only when the MAC layer carries out the transmission unit scheduling for another example; Transmitting terminal can also all adopt the transmission unit priority scheduling principle that comprises control information to carry out the scheduling of transmission unit in rlc layer and MAC layer.
In technical scheme of the present invention, control information is for service data information, and the transmission unit that comprises control information can be control PDU, also can be the RLC data PDU of carrying control PDU.Control PDU can have the multiple different form of expression according to the practical situations of EUTRA system, and PDU is a status PDU as control, and one group of status PDU is formed status report, and controlling PDU for another example is reset PDU, controls PDU in addition and also can confirm PDU or the like for resetting.The present invention does not limit the concrete manifestation form of control PDU.Carrying among the present invention in the RLC data PDU of control PDU can be according to concrete needs carrier state PDU, reset PDU, reset and confirm any or multiple among PDU or the like.
In technical scheme of the present invention, the rlc layer of transmitting terminal can be carried at control PDU and business datum in the RLC data PDU when carrying out prioritised transmission scheduling back, assembling RLCPDU simultaneously, also can make and only carry control PDU among the RLCPDU.
The transmission method implementation of transmission unit provided by the invention is flexible, is that example is elaborated to technical scheme provided by the invention below in conjunction with accompanying drawing, with several concrete implementation methods.
The rlc layer of transmitting terminal according to CQI (channel quality indication) determine the size of RLC PDU, and the business datum that the high level transmission of its reception comes is cut apart according to the size of determining, not cascade, so that when the MAC layer is formed MAC PDU, make the RLC PDU of cutting apart the back generation add size and the MACPDU coupling of control PDU.
The rlc layer of transmitting terminal is carrying out in the cutting procedure business datum, if status PDU is arranged, then preferentially status PDU is inserted among the RLC PDU, and remaining space is inserted by the business datum after cutting apart among the RLC PDU.At this moment, the RLC PDU that comprises status PDU can be called the RLC data PDU.
Because the rlc layer dividing function is based on instant channel quality in the EUTRAN system, therefore, the filling among the RLC PDU of rlc layer can be cancelled.When transmitting RLC PDU, improve the priority of status PDU, preferentially status PDU is put into RLC PDU and transmitted.
The RLC data PDU promptly carries status PDU among the embodiment 1, carries the situation of business datum again, and at this moment, the form of RLC data PDU as shown in Figure 7.RLC data PDU among Fig. 7 comprises: RLC PDU head, business datum and the status PDU of carrying owing to might include status PDU in a RLC data PDU, also may not include status PDU, so the status PDU in the RLC data PDU is an option.For the reset PDU and the control PDU such as confirming PDU that resets, be not carried in the RLC data PDU.
The rlc layer of transmitting terminal is not when having business data transmission, and rlc layer does not need status PDU is carried in the RLC data PDU, but directly status PDU preferentially is sent to the MAC layer, and the status PDU of this moment can be called RLC control PDU.
The MAC layer of transmitting terminal receives RLC data PDU and the RLC control PDU that the rlc layer transmission comes, and MAC PDU is formed in the RLC data PDU and the multiplexing back of RLC control PDU that preferentially will include status PDU, and MAC PDU is sent to HARQ, to carry out physical layer transmission.Be that transmitting terminal MAC layer priority scheduling includes the RLC data PDU of status PDU and the formation at RLC control PDU place, the RLC PDU in the formation be multiplexed with MAC PDU, and MAC PDU is sent to HARQ, to carry out physical layer transmission.
When RLC data PDU that includes status PDU that sends when transmitting terminal MAC layer and the transmission block of control PDU are MAC PDU bust this, transmitting terminal MAC layer request transmitting terminal rlc layer retransmits control PDU or the RLC data PDU that comprises among the MAC PDU of bust this, after RLC receives this request, regenerate described control PDU or RLC data PDU, and the control PDU that in retransmission processes these is regenerated or RLC data PDU are carried out the prioritised transmission scheduling.The invention is not restricted to the technical scheme that MAC layer request rlc layer retransmits, can be suitable for so long as lower floor request upper strata retransmits the present invention.
When rlc layer take place to retransmit, the MAC layer can adopt the preferential control PDU such as the RLC data PDU that contains carrier state PDU and reset PDU that send of priority scheduling principle equally.
Embodiment 2, at rlc layer, control PDU is carried in the RLC data PDU, rlc layer carries out prioritised transmission scheduling to including the RLC data PDU of control PDU, the MAC layer carries out prioritised transmission and dispatches comprising the RLC data PDU of controlling PDU.
Embodiment 2 is basic identical with the implementation of embodiment 1, and its difference is: control PDU can preferentially be carried in the RLC data PDU, and the control PDU here can be a status PDU, and reset PDU resets and confirms PDU etc.
In embodiment 2, the form of RLC data PDU as shown in Figure 8.RLC data PDU among Fig. 8 comprises: RLC PDU head, business datum and the control PDU that carries owing to might include control PDU in a RLC data PDU, also may not include control PDU, so the control PDU in the RLC data PDU is an option.
The rlc layer of transmitting terminal is not when having business data transmission, and rlc layer does not need control PDU is carried in the RLC data PDU, preferentially is sent to the MAC layer but directly will control PDU, and the control PDU of this moment can be called RLC control PDU.
The MAC layer of transmitting terminal receives RLC data PDU and the RLC control PDU that the rlc layer transmission comes, and preferentially will include RLC data PDU and the multiplexing back of RLC control PDU of controlling PDU and form MAC PDU, and MAC PDU is sent to HARQ, to carry out physical layer transmission.
The MAC layer of transmitting terminal receives RLC data PDU and the RLC control PDU that the rlc layer transmission comes, and preferentially will include RLC data PDU and the multiplexing back of RLC control PDU of controlling PDU and form MAC PDU, and MAC PDU is sent to HARQ, to carry out physical layer transmission.Be the formation that transmitting terminal MAC layer priority scheduling includes the RLC data PDU of controlling PDU and RLC control PDU place, the RLC PDU in the formation be multiplexed with MAC PDU, and MAC PDU is sent to HARQ, to carry out physical layer transmission.
When transmitting terminal MAC layer send comprise the RLC data PDU of control PDU and the transmission block of controlling PDU and be MAC PDU bust this time, transmitting terminal MAC layer request transmitting terminal rlc layer retransmits control PDU or the RLC data PDU that comprises among the MAC PDU of bust this, after RLC receives this request, regenerate described control PDU or RLC data PDU, and the control PDU that in retransmission processes these is regenerated or RLC data PDU are carried out the prioritised transmission scheduling.
When rlc layer take place to retransmit, the MAC layer can adopt the preferential control PDU such as containing the RLC data PDU of carrying control PDU and reset PDU that sends of priority scheduling principle equally.
Embodiment 3, at rlc layer, control PDU is not carried in the RLC data PDU, rlc layer carries out prioritised transmission scheduling to control PDU, the MAC layer carries out the prioritised transmission scheduling to RLC control PDU.
The rlc layer of transmitting terminal is when carrying out transfer of data, according to CQI (channel quality indication) determine the size of RLCPDU, and cut apart according to the RLC PDU size of the determining business datum that transmission comes to high level, not cascade, so that in the process of the multiplexing MAC PDU of MAC layer, make the RLC data PDU of cutting apart the back generation add size and the MAC PDU coupling of control PDU.
In embodiment 3, the form of RLC data PDU as shown in Figure 9.RLC data PDU among Fig. 9 comprises: RLC PDU head and business datum.
The rlc layer of transmitting terminal does not need control PDU is carried in the RLC data PDU, and the RLC data PDU that rlc layer is controlled PDU with RLC and do not carried any control PDU transfers to the MAC layer.The MAC layer of transmitting terminal receives RLC data PDU and the RLC control PDU that the rlc layer transmission comes, and preferentially RLC is controlled PDU and is multiplexed with MAC PDU, and MAC PDU is sent to HARQ, to carry out physical layer transmission.Be the formation at transmitting terminal MAC layer priority scheduling RLC control PDU place, the RLC PDU in the formation be multiplexed with MAC PDU, and MAC PDU is sent to HARQ, to carry out physical layer transmission.
When transmitting terminal MAC layer send comprise the transmission block of controlling PDU and be MAC PDU bust this time, transmitting terminal MAC layer request transmitting terminal rlc layer retransmits the control PDU that comprises among the MAC PDU of bust this, after RLC receives this request, regenerate described control PDU, and the control PDU that in retransmission processes these is regenerated carries out the prioritised transmission scheduling.
When rlc layer took place to retransmit, the MAC layer can adopt the priority scheduling principle preferentially to send control PDU equally.
Embodiment 4, at rlc layer, status PDU is carried in the RLC data PDU, rlc layer carries out the prioritised transmission scheduling to the RLC data PDU and other control PDU such as the reset PDU etc. that include status PDU, and the MAC layer carries out the prioritised transmission scheduling to RLC data PDU and the RLC control PDU that comprises status PDU.
Embodiment 4 is basic identical with the implementation of embodiment 1, and its difference is: after the transmitting terminal rlc layer business datum that transmission comes to high level is carried out division cascade, form the RLC data PDU.Still the available status PDU that carries in the RLC data PDU.
When RLC data PDU that includes status PDU that sends when transmitting terminal MAC layer and the transmission block of control PDU are MAC PDU bust this, transmitting terminal MAC layer request transmitting terminal rlc layer retransmits control PDU or the RLC data PDU that comprises among the MAC PDU of bust this, after RLC receives this request, regenerate described control PDU or RLC data PDU, and the control PDU that in retransmission processes these is regenerated or RLC data PDU are carried out the prioritised transmission scheduling.
When rlc layer take place to retransmit, the MAC layer can adopt the preferential control PDU such as the RLC data PDU that contains carrier state PDU and reset PDU that send of priority scheduling principle equally.
Embodiment 5, at rlc layer, control PDU is carried in the RLC data PDU, rlc layer carries out prioritised transmission scheduling to including the RLC data PDU of control PDU, the MAC layer carries out prioritised transmission and dispatches comprising the RLC data PDU of controlling PDU.
Embodiment 5 is basic identical with the implementation of embodiment 2, and its difference is: the transmitting terminal rlc layer carries out division cascade to business datum and forms the RLC data PDU.Still can carry control PDU in the RLC data PDU.
When transmitting terminal MAC layer send comprise the RLC data PDU of control PDU and the transmission block of controlling PDU and be MAC PDU bust this time, transmitting terminal MAC layer request transmitting terminal rlc layer retransmits control PDU or the RLC data PDU that comprises among the MAC PDU of bust this, after RLC receives this request, regenerate described control PDU or RLC data PDU, and the control PDU that in retransmission processes these is regenerated or RLC data PDU are carried out the prioritised transmission scheduling.
When rlc layer take place to retransmit, the MAC layer can adopt the preferential control PDU such as containing the RLC data PDU of carrying control PDU and reset PDU that sends of priority scheduling principle equally.
Embodiment 6, at rlc layer, control PDU is not carried in the RLC data PDU, rlc layer carries out prioritised transmission scheduling to control PDU, the MAC layer carries out the prioritised transmission scheduling to RLC control PDU.
Embodiment 6 is basic identical with the implementation of embodiment 3, and its difference is: the transmitting terminal rlc layer carries out division cascade to business datum and forms the RLC data PDU.Do not carry control PDU in the RLC data PDU.
When transmitting terminal MAC layer send comprise the transmission block of controlling PDU and be MAC PDU bust this time, transmitting terminal MAC layer request transmitting terminal rlc layer retransmits the control PDU that comprises among the MAC PDU of bust this, after RLC receives this request, regenerate described control PDU, and the control PDU that in retransmission processes these is regenerated carries out the prioritised transmission scheduling.
When rlc layer took place to retransmit, the MAC layer can adopt the priority scheduling principle preferentially to send control PDU equally.
The present invention also provides a kind of sending ending equipment, is provided with scheduler module, sending module and request module in this sending ending equipment.Scheduler module is mainly used in the principle that adopts the transmission unit priority scheduling that comprises control information, and the transmission unit that needs are transmitted carries out transmitting and scheduling; The transmitting and scheduling result that sending module is mainly used in according to scheduler module sends transmission unit.
Scheduler module among the present invention is relevant with the actual agreements framework of EUTRAN system with the position of sending module.Based on the agreement framework of present EUTRAN system, scheduler module of the present invention and sending module can only be positioned at rlc layer, also can only be positioned at the MAC layer, also can be positioned at rlc layer and MAC layer simultaneously.Concrete as the description in the above-mentioned method.
When the rlc layer of sending ending equipment and MAC are provided with scheduler module and sending module, scheduler module comprises RLC scheduling sublayer module and MAC scheduling sublayer module, sending module comprises: described scheduler module comprises RLC scheduling sublayer module, and described sending module comprises that RLC scheduling sublayer module and MAC send submodule.
RLC scheduling sublayer module is mainly used in and the control PDU in the transmitting terminal rlc layer is had precedence over business datum inserts in the RLC data PDU, and inserts business datum at the remaining space of RLC data PDU.RLC scheduling sublayer module also can priority scheduling be controlled PDU, will control the PDU prioritised transmission to the MAC layer.RLC scheduling sublayer module can adopt the method for rlc layer priority scheduling among a plurality of embodiment that said method describes, and is not described in detail at this.
Having when RLC scheduling sublayer module and only preferentially be carried at status PDU in the RLC data PDU under the situation of business data transmission, do not having under the situation of business data transmission, during the priority scheduling status PDU, RLC transmission submodule is mainly used in the scheduling result according to RLC scheduling sublayer module, transfers to the MAC layer with carrying the RLC data PDU of status PDU, the RLC data PDU that does not have carrier state PDU and RLC control PDU.The MAC layer receives RLC data PDU and RLC control PDU, at this moment, MAC scheduling sublayer module preferentially will include the RLC data PDU of status PDU and RLC control PDU is multiplexed with MAC PDU, and MAC sends submodule and according to the scheduling result of MAC scheduling sublayer module MAC PDU is sent to the HARQ entity and carries out physical layer transmission.Concrete description as above-mentioned method embodiment.
Having when RLC scheduling sublayer module under the situation of business data transmission control PDU such as status PDU, reset PDU are carried in the RLC data PDU, are not having under the situation of business data transmission, when priority scheduling is controlled PDU, RLC transmission submodule is mainly used in the scheduling result according to RLC scheduling sublayer module, transfers to the MAC layer with carrying the RLC data PDU of control PDU, the RLC data PDU of not carrying control PDU and RLC control PDU.The MAC layer receives RLC data PDU and RLC control PDU, at this moment, MAC scheduling sublayer module preferentially will include the RLC data PDU of controlling PDU and RLC control PDU is multiplexed with MAC PDU, and MAC sends submodule and according to the scheduling result of MAC scheduling sublayer module MAC PDU is sent to the HARQ entity and carries out physical layer transmission.Concrete description as above-mentioned method embodiment.
When RLC scheduling sublayer module business data transmission is being arranged, when not having all will not control PDU under the situation of business data transmission and being carried in the RLC data PDU, RLC sends submodule and is mainly used in scheduling result according to RLC scheduling sublayer module, RLC is controlled PDU and the RLC data PDU transfers to the MAC layer.The MAC layer receives RLC data PDU and RLC control PDU, and at this moment, MAC scheduling sublayer module is preferentially controlled RLC PDU and is multiplexed with MAC PDU, and MAC sends submodule and according to the scheduling result of MAC scheduling sublayer module MAC PDU is sent to the HARQ entity and carries out physical layer transmission.Concrete description as above-mentioned method embodiment.
When transmitting terminal comprised MAC layer and rlc layer, request module can be positioned at the MAC layer, was mainly used in when the MAC PDU bust this that comprises control information, and request transmitting terminal rlc layer retransmits RLC control PDU or carries the RLC data PDU of control PDU.Rlc layer is after the request that receives request module, retransmit control corresponding PDU, perhaps retransmit control corresponding PDU and corresponding service data, the control PDU of these re-transmissions or the RLC data PDU of carrying control PDU also are to need priority scheduling equally, the description in the concrete as above-mentioned method.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, and the claim of application documents of the present invention comprises these distortion and variation.
Claims (12)
1. the sending method of a transmission unit is characterized in that, described method comprises step:
A, transmitting terminal are based on the principle of the transmission unit priority scheduling that comprises control information, and the transmission unit that needs are sent carries out transmitting and scheduling, and sends transmission unit according to the transmitting and scheduling result.
2. the method for claim 1 is characterized in that, described step a comprises:
Transmitting terminal Radio Link control rlc layer priority scheduling contains the transmission unit of control information, and the transmission unit that preferentially will contain control information is sent to media interviews control MAC layer.
3. method as claimed in claim 2 is characterized in that, the step that the described transmission unit that preferentially will contain control information is sent to the MAC layer comprises:
The transmitting terminal rlc layer will be controlled PDU and have precedence over business datum and insert in the RLC data PDU, and the RLC data PDU that will carry control PDU transfers to the MAC layer; And/or
Transmitting terminal rlc layer priority scheduling control PDU will control PDU and have precedence over the RLC data PDU and be sent to the MAC layer.
4. method as claimed in claim 3 is characterized in that, the transmitting terminal rlc layer is inserted described business datum in the RLC data PDU after over-segmentation, and perhaps the transmitting terminal rlc layer is inserted described business datum in the RLC data PDU through behind the division cascade.
5. method as claimed in claim 3 is characterized in that, the RLC data PDU that carries control PDU comprises: carry status PDU and/or reset PDU and/or reset and confirm the RLC data PDU of PDU.
6. the method for claim 1 is characterized in that, described step a comprises:
The RLC PDU that transmitting terminal MAC layer preferentially will contain control information is multiplexed with MAC PDU, and is sent to the HARQ entity and carries out physical layer transmission.
7. as claim 1 or 2 or 3 or 4 or 5 or 6 described methods, it is characterized in that the described transmission unit that comprises control information comprises: the transmission unit that comprises control information that needs retransmit and/or the transmission unit that comprises control information of non-re-transmission.
8. as claim 1 or 2 or 3 or 4 or 5 or 6 described methods, it is characterized in that described method also comprises: when comprising the transport block transmission failure of control information, transmitting terminal lower floor request transmitting terminal upper strata retransmits the transmission unit that comprises control information.
9. a sending ending equipment is characterized in that, described sending ending equipment comprises:
Scheduler module: be used to adopt the principle of the transmission unit priority scheduling that comprises control information, the transmission unit that needs are transmitted carries out transmitting and scheduling;
Sending module: be used for sending transmission unit according to described transmitting and scheduling result.
10. equipment as claimed in claim 9 is characterized in that, when being provided with scheduler module and sending module in the rlc layer of sending ending equipment, described scheduler module comprises RLC scheduling sublayer module, and described sending module comprises RLC scheduling sublayer module;
RLC scheduling sublayer module: be used for control PDU with the transmitting terminal rlc layer and have precedence over business datum and insert in the RLC data PDU; And/or the control PDU of transmitting terminal rlc layer carried out priority scheduling;
RLC sends submodule: the RLC data PDU that is used for carrying control PDU transfers to the MAC layer; And/or the control PDU of priority scheduling transferred to the MAC layer.
11. equipment as claimed in claim 9 is characterized in that, when being provided with scheduler module and sending module in the MAC of the sending ending equipment layer, described scheduler module comprises MAC scheduling sublayer module, and described sending module comprises that MAC sends submodule;
MAC scheduling sublayer module: be used for the preferential RLCPDU that contains control information and be multiplexed with MAC PDU with transmitting terminal MAC layer;
MAC sends submodule: be used for that MAC PDU is sent to the HARQ entity and carry out physical layer transmission.
12., it is characterized in that described equipment also comprises as claim 9 or 10 or 11 described equipment:
Request module: be used for when the transport block transmission failure that comprises control information, request transmitting terminal upper strata retransmits the transmission unit that comprises control information.
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| WO2010124548A1 (en) * | 2009-04-27 | 2010-11-04 | 中兴通讯股份有限公司 | Method and equipment for sending radio link layer status package |
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