CN201319598Y - Wireless transmitting/receiving unit - Google Patents

Abstract

A wireless transmitting/receiving unit, which is used for creating an RLC PDU(s) before an E-TFC option of an MAC PDU including the RLC PDU(s), is configured into an RLC PDU generated beforehand for the transmission in a next TT1. Should any RLC PDU(s) included in the MAC PDU must be created after the determination of the size of the MAC PDU, namely the E-TFC option, the method can avoid the maximum peak treatment requirement caused by the inherent delay limitation. The wireless transmitting/receiving unit maintains the approximate match between the size of the RLC PDU(s) and that of the MAC PDU including the RLC PDU(s), which ensures lower error rate of the RLC PDU(s) caused by an HARQ residual error. Therefore, the transmitting/receiving unit can be set as Semi-Radio Detectable or Radio Detectable with Delay.

Description

A kind of wireless transmitter/receiver unit

Technical field

The application relates to radio communication.

Background technology

Third generation partner program (3GPP) is once cooperating to realize that the whole world can use the third generation (3G) wireless communication system between the telecommunication union tissue.

The UMTS network architecture comprises core network (CN), UMTS terrestrial radio access network (UTRAN) and at least one subscriber equipment (UE).CN interconnects via Iu interface and UTRAN.

UTRAN is configured to provide wireless telecommunication services to UE via the Uu radio interface, and this UE relates to wireless transmitter/receiver unit (WTRU) in this application.The air interface commonly used that in the UMTS standard, defines comprise one or more radio network controllers (RNC) and by 3GPP in the base station of alleged Node B, provide at least one UE for the geography of radio communication covers jointly.One or more Node B are connected to each RNC via Iub interface.RNC among the UTRAN is via the Iur interface communication.

Fig. 1 is the example block diagram of UE 200.UE 200 comprises radio resource control (RRC) entity 205, radio link control (RLC) entity 210, medium access control system (MAC) entity 215 and physics (PHY) layer 1 (L1) entity 220.RLC entity 210 comprises emitting side parts 225 and receiver side parts 230.Emitting side parts 225 comprise transmit buffer 235.

Fig. 2 is the example block diagram of UTRAN 300.UTRAN 300 can comprise RRC entity 305, RLC entity 310, MAC entity 315 and PHY L1 entity 320.RLC entity 310 comprises emitting side parts 325 and receiver side parts 330.Emitting side parts 325 comprise transmit buffer 335.

The High Speed Uplink Packet of introducing 3GPP version 6 inserts (HSUPA) to be provided for the higher data rate (data rates) that up link transmits.As the part of HSUPA, new transmission channel, promptly enhancement type special channel (E-DCH) thus be introduced into higher rate delivery (carry) data.

Media access control sublayer is configured to the E-DCH channel and determines in Transmission Time Interval (TTI) the bit number that is transmitted.Media access control sublayer can be configured to carry out E-DCH transformat combination (E-TFC) selection process.The relative authorization (grant) and the absolute grant adjustment maximum that receive at E-RGCH and E-AGCH can allow E-DPDCH to DPCCH power rating (power ration), and WTRU can be in this power rating emission.

Fig. 3 has shown the overview of RLC sublayer.The RLC sublayer comprises the RLC entity, and this RLC entity has 3 types: transparent mode (TM) RLC entity, non-answer-mode (UM) RLC entity and answer-mode (AM) RLC entity.UM RLC entity and TM RLC entity can be configured to launch the RLC entity and receive the RLC entity.Emission RLC entity emission RLC PDU receives the RLC entity and receives RLC PDU.AM RLC entity comprises the receiver side that is used to launch the emitting side of RLC PDU and is used to receive RLC PDU.

Each RLC entity is defined as transmit leg or recipient according to initial procedure.At UM and TM, emission RLC entity is a transmit leg, and reciprocity RLC entity is the recipient.AM RLC entity can be defined as transmit leg or reciever according to basic process.Transmit leg is the transmitter of acknowledged mode data (AMD) PDU, and the recipient is the receiver of AMD PDU.Transmit leg or recipient can be at the UE places or the UTRAN place.

For each TM and UM service, an emission RLC entity and a reception RLC entity are arranged.Yet for AM service, what a combination was arranged transmits and receives the RLC entity.

UM RLC entity and TM RLC entity all use a logic channel to send or receive data PDU.AM RLC entity can be configured to use one or two logic channel to send or receive data PDU and control PDU.If only there is a logic channel to be configured, then launches AM RLC entity and on identical logic channel, send data PDU and control PDU.

AM RLC entity can be configured to create PDU, and wherein RLC PDU size is identical with control PDU for data PDU.

Current, the RLC entity is " radio do not have discover " or can not discover current wireless electricity situation.Yet in the UL direction, because RLC is positioned at identical node with the MAC agreement, the RLC entity can be " radio is discernable " or can discover current wireless electricity situation.Therefore, RLC PDU size can be determined based on instant available data rate.

Yet when the RLC entity was configured to " radio do not have discover ", the RLC entity produced the RLC PDU of largest amount.Authorize according to current wireless electricity condition and appointment, this can cause producing a plurality of PDU at each TTI.Unfortunately, if the RLC PDU that is produced greater than selected E-DCH transformat combination (E-TEF) size, the RLC PDU that is then generated can be by segmentation (segment).

" radio is discernable " RLC and " radio do not have discover " RLC both have merits and demerits.The major defect of " radio do not have discover " is that (a) expense when using less fixedly RLC PDU size is bigger, and (b) in the MAC segmentation under the situation that bigger fixedly RLC PDU size is used since residue mixed automatic repeat request (HARQ) mistake cause than the serious mistake rate.(note: the transmission of residue HARQ mistake=improved MAC (MAC-i/is) PDU is failed.If a large number of segmentation is arranged, any one MAC-i/is PDU delivery divides the chance of segment fault bigger, and then RLC PDU error rate increases.)

As mentioned above, " radio is discernable " RLC entity produces the function (function) of RLC PDU as the E-TFC size (transmission block size) of MAC PDU.As a result of, because RLC PDU need be in MAC punishment section, the low RLC PDU error rate that therefore has minimum expense and cause by residue HARQ mistake.Yet, needing too many processing power owing in the short period amount, generate RLC PDU, " radio is discernable " RLC entity may not produce RLCPDU at the TTI of appointment.

" radio is discernable " RLC entity will produce the RLC PDU of coupling transmission block size, this transmission block size is the optimized size that minimizes the RLC PDU error rate that is caused by residue HARQ mistake, " yet radio is discernable " RLC entity has bigger expense for very little E-TFC size, has lower expense for bigger transmission block size.Since when have big E-TFC when selecting " radio is discernable " RLC produce big RLC PDU, therefore need be transmitted again and the E-TFC selection can have problems when reducing in size as RLC PDU greatly.And, the MAC segmentation that the transmission again of big RLCPDU needs to produce larger amt.Therefore, the RLC PDU error rate that is caused by the HARQ residual error may increase.

Thus, need a kind of in the RLC entity, use be used to produce RLC PDU so that can reduce the RLC expense simultaneously and the method for the RLC PDU error rate that causes by the HARQ residual error.

Therefore, it will be very good being used for selecting the method for suitable R LC PDU size at particular range.More particularly, be used to determine when that it is very good should calculating the method which value RLC PDU size and RLC PDU size should be configured to.

The utility model content

A kind of device (WTRU) that is used for creating the RLC PDU that is used for MAC PDU before E-TFC selects, this MAC PDU will comprise this or these RLC PDU.WTRU is configured to produce in advance and is used for the RLC PDU that transmits at afterwards TTI.If any RLC PDU that will be included among the MAC PDU must promptly be created after E-TFC selects after the size of determining this MAC PDU, then this process has the benefit of the needs of avoiding big peak value processing, and wherein peak-peak is handled needs and will exist owing to tight (tight) postpones to limit.After this device of Miao Shuing allows this benefit when the approximate match kept simultaneously in the most of the time between the MAC PDU size that RLC PDU size and this RLC PDU be comprised in.Keep this approximate match and guaranteed that the RLC PDU error rate that is caused by the HARQ residual error keeps lower.This device can be set up as " half radio is discernable " or " radio with delay is discernable ".

Description of drawings

Can understand the utility model in more detail from following description, these descriptions are that the mode with example provides and can be understood in conjunction with the accompanying drawings, wherein:

Fig. 1 is the example block diagram of UE;

Fig. 2 is the example block diagram of UTRAN;

Fig. 3 has shown the overview of RLC sublayer;

Fig. 4 has shown the wireless communication system that comprises a plurality of WTRU, Node B, CRNC, SRNC and core network;

Fig. 5 is the WTRU of the wireless communication system among Fig. 4 and the functional block diagram of Node B;

Fig. 6 is that the radio link that is used in that back one TTI transmits that is used for producing in advance that uses in wireless transmitter/receiver unit (WTRU) is controlled (RLC) protocol Data Unit (PDU); And

Fig. 7 has shown the example of combination of the execution mode of the different step of describing among Fig. 6.

Embodiment

" wireless transmitter/receiver unit (WTRU) " that hereinafter mentions is including, but not limited to the subscriber equipment of WTRU, subscriber equipment (UE), mobile radio station, fixing or moving user unit, beeper, cell phone, PDA(Personal Digital Assistant), computer or any other type that can operate in wireless environment." base station " hereinafter mentioned is including, but not limited to the interface equipment of Node B, site controller, access point (AP) or any other type that can operate in wireless environment.

Fig. 4 has shown the wireless communication system 400 that comprises a plurality of WTRU 410, Node B 420, CRNC 430, SRNC 440 and core network 450.As shown in Figure 4, WTRU 410 communicates by letter with Node B 420, and Node B 420 is communicated by letter with SRNC 440 with CRNC 430.Although shown three WTRU 410, Node B 420, a CRNC 430 and a SRNC 440 among Fig. 4, should be noted that wireless and any combination wireline equipment can be included in the wireless communication system 400.

Fig. 5 is the WTRU 410 in the wireless communication system 400 of Fig. 4 and the functional block diagram 500 of Node B 420.As shown in Figure 5, WTRU 410 communicates by letter with Node B 420, and WTRU 410 and Node B are configured to carry out the method for selecting RLC PDU size.

Except the assembly that can find in typical WTRU, WTRU 410 also comprises processor 415, receiver 416, transmitter 417 and antenna 418.Processor 415 is configured to carry out the method that is used to select RLC PDU size.Receiver 416 is communicated by letter with processor 415 with transmitter 417.Both communicate by letter antenna 418 and receiver 416 and transmitter 417 to promote transmitting and receiving of wireless data.

Except the assembly that can find in typical base station, Node B 420 comprises processor 425, receiver 426, transmitter 427 and antenna 428.Receiver 426 is communicated by letter with processor 425 with transmitter 427.Both communicate by letter antenna 428 and receiver 426 and transmitter 427 to promote transmitting and receiving of wireless data.

Following term " transmission block " relates to any one in following: MAC-e PDU, MAC-i PDU, MAC-es PDU, MAC-is PDU or MAC PDU.Term " bit number in the transmission block " or " selecteed transmission block (TB) " are used to relate to any one in the following amount: the size of total transmission block (or " transmission block size "); The size of total transmission block deducts the needed bit size of mac header; The bit number that can be used for the logic channel that MAC-d stream (media inserts entity control dedicated channel stream) or RLC PDU belong to according to E-DCH transformat combination (E-TFC) selection course; The bit number that can be used for the combination of MAC-d stream or logic channel according to the E-TFC selection course; And as the bit number of from the logic channel of appointment, asking of an E-TFC selection course part.

Fig. 6 is that the radio link that is used in that back one TTI transmits that is used for producing in advance that uses in wireless transmitter/receiver unit (WTRU) is controlled (RLC) protocol Data Unit (PDU).With reference to figure 6, WTRU carries out the calculating of RLC PDU size (the perhaps size of RLC PDU data field) and the establishment (610) of RLC PDU at the fixed time.The result (620) that WTRU carries out the authorization of service renewal process or uses the latest services mandate to upgrade.WTRU calculates " bit number in the transmission block " (G) (630) based on authorization of service renewal process and other possible factors.WTRU can calculate RLC PDU size (S) (640) based on bit number in the transmission block and possible other factors and parameter subsequently.If outstanding (outstanding) RLC PDU is arranged, then WTRU can be configured to more amount of new data (660) subsequently.Next, if the data volume among the new RLC PDU when WTRU can be configured to be created based on the such RLC PDU of the data volume among the determined outstanding RLCPDU and the restriction of the data total amount among the outstanding RLC PDU determined whether to create other RLC PDU (670).If WTRU determines not create other RLC PDU, then WTRU repeats (refrain) and waits for that this process will be performed next time from creating RLC PDU.Otherwise WTRU can be configured to create other RLC PDU (680).Whether WTRU can be formulated into inspection subsequently and still have available data (in RLC SDU) to create RLC PDU (690).If this is the case, then WTRU can be configured to upgrade the data volume of giving prominence among the RLC PDU.Otherwise WTRU can be configured to wait for that this process is performed next time.It should be noted that before restarting the authorization of service renewal process in order to save time, whether WTRU can be configured to check at this moment has any available data to create RLC PDU.If there are not available data to create, then WTRU is configured to skip this wait and carries out next time.

Below execution mode RLC PDU size has been described should calculated time (step 610), these execution modes can " make up " uses, its meaning is that calculating will take place if during the generation of any of these incident.In the first embodiment, WTRU is configured to periodically determine RLC PDU size, for example based on Transmission Time Interval (TTI) or every N TTI.WTRU also can be configured to determine RLC PDU size when E-TFC selection each time takes place.WTRU also can be configured to determine RLC PDU size when creating new RLC PDU each time from the segmentation of RLC service data unit (SDU) and/or link (concatenation).WTRU also can be configured to determine RLC PDU size when higher level receives data (being new RLC SDU) or during update service mandate each time at RLC each time.WTRU also can be configured to determine RLC PDU size based on active set (active set) renewal process.Alternatively, regardless of being the foundation of Serving cell variation or radio bearer, transmission channel or physical channel, when disposing or reconfiguring, can coming to determine RLC PDU size.RLC PDU size can be when receiving minimum/maximum and is calculated from the RRC signaling.

Replacedly, WTRU can be configured to determine RLC PDU size based on trigger event.Determine RLC PDU size when in one embodiment, the WTRU variation that is configured to available bit number, E-DCH transport format combination index (E-TFCI), WTRU power headroom (headroom) or authorization of service in transmission block takes place.Meeting can be based on predetermined thresholding as the needed variable quantity of trigger event.

Replacedly, WTRU can be configured to be updated in the information of using when calculating the RLCPDU size in each E-TFC selects, and wherein the data from this logic channel are included among the MAC-iPDU.In another replaceable mode, WTRU is configured to the information of use when each E-TFC selects to be updated in calculating RLC PDU size, if wherein the RLC entity delivers the stream of scheduling (scheduled) or the stream of non-scheduling just respectively, then this HARQ process is configured to send respectively the data of scheduling and/or the data of non-scheduling.Perhaps WTRU is configured to the information of use when each E-TFC selects to be updated in calculating RLC PDU size, wherein is included among the MAC-i PDU from the data in the MAC-d stream of logic channel, and perhaps the MAC-d stream of logic channel allows to be re-used.

Alternatively, WTRU can be configured to surpass particular value or following quantitative change in the variation of following amount and must be lower than and determine RLC PDU size when thresholding or following quantitative change must be higher than thresholding.This tittle comprises: the 1) signal code power that receives (RSCP) of the path loss of Ce Lianging, measurement or to Common Pilot Channel (CPICH) Ec/No and the WTRU through-put power of the measurement of Serving cell; The average error rate of 2) the n time (for any n) HARQ transmitted error rate or all HARQ transmission; HARQ transmission delay (time between the initial transmission of transmission block and its successful respond); 3) total RLC PDU transmission delay (the HARQ transmission delay add that RLC PDU creates and transmission between time); 4) quantity of residue HARQ error rate (being the probability that the HARQ failure takes place) or HARQ failure; 5) percentage or the quantity of the RLC PDU that transmits have again been needed; 6) downlink channel quality of discovering by WTRU or the CQI (CQI) of report; 7) " up link (the UP) " through-put power that receives from network in certain period of time is controlled the quantity or the percentage amounts of (TPC) order, may be emitted as condition on specific absolute transmission power with WTRU; Succeed in sending up the quantity that the required RLC of RLC PDU transmits again; Percentage amounts or the quantity of the RLC PDU that has been dropped; 8) any function (for example average) of in the above-mentioned amount or combination.

Replacedly, WTRU can be configured to when (HARQ of all transmission blocks bust this again) takes place for mixed automatic repeat request (HARQ) failure or determine RLC PDU size when surpassing thresholding or when surpassing the quantity that is configured when this incident takes place successfully sending quantity that needed HARQ transmits again.In the replaceable mode of another kind, when the RLC PDU that WTRU can be configured to when RLC PDU need be transmitted again or the RLC of the quantity that is configured transmits the percentage amounts that takes place or be configured is again transmitted again, calculate RLC PDU size.In another execution mode,, can recomputate RLC PDU size when RLC PDU surpasses the quantity of transmission again or abandons quantity that timer stops or be configured or the RLC PDU/SDU of percentage amounts when being dropped.Also can work as and calculate RLC PDU size when timer has stopped.The value of this timer can be configured.RLC PDU size can be calculated by the MAC layer, and this RLC PDU size can be based on TTI or periodically offer rlc layer.Replacedly, rlc layer can be based on calculate RLC PDU size from the information of MAC layer.

In one embodiment, RLC PDU size is provided in " bit number in the transmission block " that calculates in the step 630, perhaps is configured to the function of " bit number in the transmission block ".That is to say that the size of the data field of RLC PDU is set up, so that the size of the size of complete RLC PDU (comprising header) and " bit number in the transmission block " is complementary.As described below, if value is higher than maximum or is lower than minimum value, then size can be readjusted.Whether the logic channel under the basis RLC PDU of " bit number in the transmission block " is belonged to the stream of scheduling or the stream of non-scheduling.

Logic channel for the stream that belongs to scheduling, " bit number in the transmission block " can relate to according to (service) mandate of scheduling and available horsepower and the highest payload that can be transmitted, (for example, WTRU use according to E-TFC limit maximum E-TFC that process sends by WTRU, minimum in the highest payload that can be transmitted according to authorization of service and selected power bias (offset)); The highest payload that can be transmitted only according to authorization of service; According to the highest payload that authorization of service and selected power bias can be sent out, do not consider that wherein needed transmitting power is to maximum WTRU transmitting power (supposing that promptly available WTRU transmitting power is always enough); And consider the mandate (SG) of scheduling and the highest payload that can be transmitted of maximum WTRU transmitting power (for example WTRU uses according to E-TFC qualification process and do not consider minimum in the highest payload that can be transmitted of selected power bias by maximum E-TFC that WTRU transmitted, according to authorization of service)." the highest payload that can be transmitted according to authorization of service " also can be known as " for current TTI, the maximum amount of data that allows to be transmitted according to applicable current mandate ".

" bit number in the transmission block " can comprise that above-described any combination deducts the size of MAC-i/is header.If the schedule information field is sent out, then " bit number in the transmission block " can comprise that also above-described any combination deducts the size of schedule information (SI) field.

The selected power bias of hereinafter mentioning is corresponding to the power bias of the HARQ profile (profile) that flows from MAC-d, wherein MAC-d stream allows highest priority data to be transmitted, perhaps under a plurality of MAC-d stream allows situation that the data of identical limit priority are transmitted, selected power bias is corresponding to by the power bias of carrying out the selected MAC-d stream of function.Replacedly, power bias can relate to the power bias from the HARQ profile of the stream of the MAC-d under the logic channel.

The authorization of service value that is provided by the authorization of service update functions can be provided the value of the mandate of the scheduling of hereinafter mentioning (SG), perhaps replacedly relates at 10ms TTI being configured and this TTI is used for the authorization of service that dwindles under the situation that the pattern gap of upcoming transmission and compression overlaps.

Under the situation of the initial transmission of also not carrying out the E-TFC selection, if perhaps at the appointed time amount does not have E-TFC to select to take place, then WTRU can carry out or its combination in following: 1) if for the stream that belongs to scheduling logic channel---" authorization of service value " is provided in RRC message, then use the value " authorization of service value " of information element (IE).This IE is provided by network, and the initial authorization when being used as E-DCH and being configured, otherwise authorization of service is initially set to 0.2) for the stream that belongs to non-scheduling logic channel---WTRU can simply use non-authorization of service to create the initial value of RLC PDU to start with.3) when not having the initial service mandate to be configured (IE " authorization of service value " is not provided) or replacedly always for situation above-mentioned, can use down in the train value one or its to make up to determine the size of RLC PDU: i), to determine size and establishment RLC PDU in the last moment that only be the current of initial transmission and next TTI (one or more) by using current E-TFC or " bit number in the transmission block " (promptly specifying TTI place to determine); Ii) RLC PDU size is confirmed as multiple or the maximum RLC PDU or the maximum RLCPDU/N of minimum RLC PDU size or minimal size; 4) RLC PDU size is set the E-TFC size from minimum and is selected.For example, WTRU can select the minimum value or the maximum that allow.5) RLC uses by the pre-configured value network appointment or that dispose in WTRU.

In replaceable execution mode, " bit number in the transmission block " can be or its any combination in following: 1) " bit number in the transmission block " comprises the RLC PDU (this means that UE does not create the more RLC PDU than the RLC PDU that can send under current TTI) that will be created; 2) determined " bit number in the transmission block " of selecting generation by E-TFC in previous one or more TTI.The quantity of the transmission block of determined TTI (TB) size can be configurable or can be based on the WTRU ability before.3) formerly or " bit number in the transmission block " that select to produce by E-TFC that calculated among this TTI average.In this case, the TB size that obtains can be quantized the E-TFC size that allows with coupling.Be configurable average period.4) according to the specific assumed condition of appointment of the mandate of authorization of service, WTRU power headroom, non-scheduling and other parameters of in the E-TFC selection course, using, if E-TFC is chosen in when calculating when (even its unactual generation) takes place, " bit number in the transmission block " that can be transmitted.The condition of these hypothesis can basis: i) mandate and other parameters of the current prevailing value of authorization of service (prevailing value), WTRU power headroom, non-scheduling; The ii) mandate of the value of authorization of service, WTRU power headroom, non-scheduling and other parameters of having lived through in the past; The iii) mandate of the value of authorization of service, WTRU power headroom, non-scheduling and other parameters, this parameter are implemented (for example path loss, CPICHEc/No, CPICH RSCP, WTRU through-put power, downlink channel quality etc.) being about to specify in the specific measurement; Perhaps iv) above-mentioned any combination or function.5) " bit number in the transmission block " is average as each or its in the above-mentioned definition, multiply by a factor, and reaches next integer up or down or from the nearest value of the finite aggregate of probable value.The described factor can be greater than 1 or less than 1.6) " bit number in the transmission block " is average as each or its in the above-mentioned definition, multiply by " maximum quantity of the MAC segmentation of each RLC PDU " parameter, and this parameter is informed or be determined in advance (the actual parameter title can be different) with signal; 7) " bit number in the transmission block " is average as each or its in the above-mentioned definition, divided by " maximum quantity of the MAC-is SDU of each MAC-i PDU " parameter, this parameter is informed or is determined in advance with signal, or equivalent parameters (the actual parameter title can be different); And 8) above-mentioned any function.

Can be configured WTRU with the minimal size of each RLC PDU and largest amount are limited.If use RLC PDU size that above-described a kind of method the obtains largest amount greater than configuration, then RLC PDU size is reconfigured to this largest amount that is configured.Similarly, if use RLC PDU size that above-described a kind of method obtains less than the minimal size that is configured, then RLC PDU size is reconfigured to this minimal size that is configured.

In one embodiment, UTRAN 300 can determine maximum RLC PDU size, and uses L2 or L3 (RRC) signaling that the value of maximum RLC PDU size is sent to WTRU 200.For example, UTRAN 300 can use rrc message element (IE) " RLC information " to dispose WTRU200 and use minimum RLC PDU size and maximum RLC PDU size.The signaling of the value of maximum RLC PDU size can occur when radio bearer configuration or radio bearer reconfigure.And the signaling of the value of maximum RLC PDU size can occur when transmission channel configuration or transmission channel reconfigure.

Replacedly, if I allows the MAC fragment size to be defined, WTRU can be configured to allow to derive the MAC fragment size minimum RLC PDU size from I.For example, the minimum RLCPDU size multiple that can be minimum MAC fragment size.Replacedly, minimum RLC PDU size can be by pre-configured quiescent value (static value) in WTRU 200.

Again with reference to figure 6, WTRU can be configured to create the RLC PDU of limited quantity.For example in (650), WTRU determines to create but also is not sent out data quantitative limitation among the RLC PDU of (promptly also not being inserted in the transmission block).These PDU hereinafter are known as " outstanding (outstanding) " RLC PDU.Alternatively, the data volume among the outstanding RLC PDU also can comprise the content of the segmentation entity that is used for corresponding logic channel.In one embodiment, WTRU can be configured to create the new RLC PDU of limited quantity, thereby makes the total data volume among the outstanding RLC PDU be no more than predetermined restriction.It should be noted that the quantity of the new RLC PDU that then is created can be 0 if the data volume among the outstanding RLC PDU has surpassed the restriction that begins to locate in process.In this case, WTRU does not create other RLC PDU, but does not abandon the RLCPDU that has created.Predetermined data limit can scheduled justice, informed with signal by higher level, perhaps based on current E-TFC or based on the current bit number (indicated by the MAC layer) of the transmission block that is used for logic channel or based on the size of the new RLC PDU that will be created.In one embodiment, the big young pathbreaker of new RLCPDU can be created.In one embodiment, specify current mandate and power condition, the restriction in the step can be multiply by the predefined factor corresponding to the data volume that is sent out from logic channel.That is to say that described restriction is corresponding to maximum amount of data, these data are transmitted in current TTI by applicable current mandate (scheduling or non-scheduling) permission, and this maximum amount of data is calculated in step 630.

Replacedly, specify the data volume (RLC SDU) of buffering, WTRU can be configured to create new RLC PDU as much as possible.Perhaps WTRU can be configured to create the new RLC PDU (nearly specifying the possible quantity of the data volume of buffering) of maximum quantity (Nc).This maximum quantity can scheduled justice, informed with signal by higher level, perhaps based on current E-TFC or based on the current bit number (by the indication of MAC layer) of the transmission block that is used for logic channel.

In the replaceable mode of another kind, WTRU can be configured to based on the new RLC PDU that creates limited quantity with the predefined data amount of bit or byte representation.This data volume can scheduled justice, informed with signal by higher level, perhaps based on current E-TFC or based on the current bit number or the MAC-d stream (by the indication of MAC layer) of the transmission block that is used for logic channel.For example, specify current mandate or power condition, described data volume can be corresponding to flowing the data volume that (multiply by a factor) is sent out from logic channel or MAC-d.

Alternatively, belonging to the logic channel of the stream of non-scheduling can be without any restriction for the quantity of the PDU of previous establishment.This just has this situation when RLC PDU size is only determined value based on non-authorization of service.In this case, the RLC PDU size (deducting the mac header part alternatively) corresponding to non-authorization of service always can be created.

Fig. 7 has shown the combination of the execution mode of the different step of describing among Fig. 6.Shown different step has realized the same task of the corresponding step among Fig. 6, but more concrete.

In the step 740 of corresponding step 640, RLC PDU size S is confirmed as: the maximum in the minimum in the bit number (G) in the transmission block of determining in minimum RLCPDU size and maximum RLC PDU size, the step 730 (corresponding to step 630).In step 750, the maximum amount of data (M) among the outstanding PDU is calculated as constant (for example 4) and multiply by the bit number (G) in the transmission block of determining in the step 730.In step 770, the big or small S sum of determining in the maximum amount of data (M) among the outstanding PDU and data volume (D) among the outstanding PDU and the step 740 compares.Replacedly, be the other RLCPDU of S if in RLC SDU, there are enough available data to create size, the maximum amount of data (M) among the then outstanding PDU can with D and less than the big or small T sum of S with compare.In step 710, WTRU waited for up to next TTI before next implementation.

Though feature of the present utility model and element are described with specific combination, each feature or element can be under the situation that does not have further feature and element use separately, or with or with under the various situations that further feature and element combine do not use.Here method that provides or flow chart can be implemented in computer program, software or the firmware carried out by all-purpose computer or processor.The light medium that comprises magnetizing mediums, magnet-optical medium and the CD-ROM video disc of read-only memory (ROM), random-access memory (ram), register, buffer storage, semiconductor memory apparatus, internal hard drive and moveable magnetic disc and so on and digital versatile disc (DVD) and so on about the example of computer-readable recording medium.

For instance, appropriate processor comprises: general processor, application specific processor, conventional processors, digital signal processor (DSP), a plurality of microprocessor, one or more microprocessors, controller, microcontroller, application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) circuit, any integrated circuit (IC) and/or the state machine related with the DSP nuclear phase.

The processor that is associated with software can be used to realize a radio frequency transceiver, so that used in wireless transmission receiving element (WTRU), subscriber equipment (UE), terminal, base station, radio network controller (RNC) or any host computer.WTRU can be used in combination with the module that adopts hardware and/or form of software to implement, for example camera, camara module, video telephone, speaker-phone, vibratory equipment, loud speaker, microphone, TV transceiver, Earphone with microphone, keyboard, bluetooth

Module, frequency modulation (FM) radio unit, LCD (LCD) display unit, Organic Light Emitting Diode (OLED) display unit, digital music player, media player, video game machine module, explorer and/or any wireless lan (wlan) or ultra broadband (UWB) module.

Claims (1)

1, a kind of wireless transmitter/receiver unit is characterized in that, this wireless transmitter/receiver unit comprises:

Processor, this processor is configured to: determine whether comprise data in the radio link control protocol data unit; Calculate the size of the data field in the described radio link control protocol data unit, wherein said radio link control protocol data unit size be complementary by the data quantity transmitted that is used for that current mandate allowed of current transmission time interval; And produce at least one radio link control protocol data unit based on being used for data quantity transmitted; And

Be coupled to the memory of described processor, wherein said memory is configured to store described at least one radio link control protocol data unit, and this radio link control protocol data unit is comprised in the medium access control system protocol Data Unit in current transmission time interval or Transmission Time Interval in the future.

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