CN101129031A

CN101129031A - Method and apparatus for transmitting packet data

Info

Publication number: CN101129031A
Application number: CNA2006800056640A
Authority: CN
Inventors: 郭鲁濬; 格特·J·范利肖特; 李国熙; 金成勋
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2005-03-22
Filing date: 2006-03-22
Publication date: 2008-02-20
Also published as: RU2007135179A; KR20060102255A; JP2008527943A; KR100800684B1

Abstract

A method and apparatus are provided for transmitting packet data over an uplink channel in a mobile communication system in which retransmission of a packet is possible using a hybrid automatic retransmission request (HARQ) technique. A base station receives a packet data unit (PDU) from a terminal and determines whether the base station can calculate a retransmission number (RSN) indicating the number of retransmissions for the PDU. If the base station cannot calculate the RSN for the PDU, the base station sets the RSN to a special value indicating that the number of retransmissions for the PDU is unknown, and transmits the set RSN to a serving radio network controller (SRNC) along with the PDU.

Description

Send the method and apparatus of grouped data

Technical field

The present invention relates generally to send the mobile communication system of grouped data by up link.Especially, the present invention relates to a kind of method and apparatus, wherein can utilize when mixing that the base station can not calculate correct retransmission number under the request that automatic repeat requests (HARQ) technology retransmits identical grouping in base station (or Node B), the base station is to service radio network controller (SRNC) report situation

Background technology

In asynchronous wide-band code division multiple access (WCDMA) communication system, adopt enhanced uplink dedicated channel (EUDCH).The purpose that proposes EUDCH is in order to improve the performance that uplink packet sends in asynchronous wide-band code division multiple access (WCDMA) communication system.

Support the mobile communication system of EUDCH to utilize the fast dispatch technology and mix the efficient that automatic repeat requests (HARQ) technology comes maximum uplink to send.In the fast dispatch technology, Node B receives the report about the channel situation and the buffer situation of subscriber equipment (UE).The up link that Node B is controlled UE according to the information that receives sends.Node B allows the UE with good channels so situation to send maximum data volume, and allows the UE with poor channel situation to send the minimal data amount, thereby promotes limited up link to send the resources effective utilization.When in the first grouping that sends mistake taking place, the HARQ technology retransmits this grouped data with compensation grouping mistake.The HARQ technology can be divided into (chase) merging (CC) technology and incremental redundancy (IR) technology of chasing.The CC technology sends the used identical form retransmission packet of form with first when making a mistake.The IR technology sends the used different form retransmission packet of form with first when making a mistake.

EUDCH carries out HARQ between UE and Node B, thereby has increased to the successful transmission rate that sends output.The defective data block of the soft merging of HARQ technology is with its re-transmitting data block rather than abandon defective data block, has therefore increased the reception success rate of data block.

Figure 1A is the figure of the protocol architecture of the diagram common mobile communication system of supporting EUDCH.

With reference to Figure 1A, UE 105 comprises physics (PHY) layer 125, MAC-e layer 120, MAC-d layer 115 and upper strata 110.Upper strata 110 comprises the application of actual this user data of generation and is used for user data is reconfigured as the RLC layer (RLC) that is fit to radio channel transmission size.MAC-d layer 115 inserts multiline message in the data that upper strata 110 provides to generate MAC-d protocol Data Unit (PDU).

MAC-e layer 120 stores them the priority query (PQ) into according to the priority of the MAC-d PDU that provides from MAC-d layer 115.In addition, MAC-e layer 120 sends to Node B 130 to buffer state reports and channel quality reporting according to the state of this PQ.Subsequently, MAC-e 120 receives the schedule information from Node B 130, and the data that will be stored among the PQ according to this schedule information are sent to physical layer 125.In this case, MAC-e layer 120 is carried out the HARQ operation according to the back-signalling that receives from Node B 130 (confirming (ACK) signal and Negative Acknowledgement (NACK) signal) to the uplink data that is sent to physical layer 125.

After the processing, physical layer 125 will send to Node B 130 from the data that MAC-e layer 120 provides by wireless channel.

Node B 130 comprises MAC-e layer 135 and physical layer 140.Node B 130 further comprises layer 2 (L2) and layer 1 (L1) 145 that is used for grouped data is sent to radio network controller (RNC) 150.Physical layer 140 is used to handle the signal that the physical layer 125 through UE 105 provides, and the signal that will handle is sent to MAC-e layer 135.

MAC-e layer 135 is communicated to L2/L1 145 to the data that provide from physical layer 140, and the buffer state reports that transmits based on UE 105 and channel quality reporting are to a plurality of UE operation dispatchings.At this, will be called MAC-e PDU in a HARQ handles by the data that UE 105 sends.Node B 130 can be sent to RNC150 to the MAC-e PDU that receives from UE 105 in some transmission time intervals (TTI).Some logic channels can be mapped to a MAC-e PDU, and one group of logic channel PDU that will comprise in a MAC-e PDU is called MAC-es PDU.

RNC 150 comprises upper strata 170, MAC-d layer 165, MAC-e layer 160 and is used for the L2/L1 155 of the data of receiving node B 130 transmissions.

The MAC-e layer 160 that is included among the RNC150 is realized the independent function that the MAC-e layer 135 of some Node B 130 is difficult to realize extraly.For example, MAC-e layer 160 can be classified to the grouped data that sends by a plurality of UE that comprise UE 105 according to PQ, and classified data are resequenced in PQ.

As mentioned above, UE 105 comprises PQ, and according to priority the data storing that will send by EUDCH in PQ.When setting up EUDCH and call out, in the MAC-e of UE 105 layer 120, create PQ, and determine the number of PQ according to the number of application that will be by the EUDCH service.

Therefore, when creating buffer state reports, UE 105 provides to Node B 130 and shows the information that is stored in data total amount among each independent PQ.According to this information that provides, Node B 130 is according to the channel situation and the priority operation dispatching that is stored in the data among the PQ of UE.

Figure 1B diagram is the figure of the form of the MAC layer structure of common UE and a MAC-e PDU.

With reference to 1B, the data that will send by UE in a HARQ handles are called MAC-e PDU 130-1.Some logic channels can be mapped to a MAC-e PDU, and the one group of logic channel PDU that comprises in a MAC-e PDU is called as MAC-es PDU 120-1.

The RLC PDU 100-1 corresponding with logic channel is mapped to MAC-e PDU 110-1.Data description identifier (DDI) 131-1 that the MAC-e head has 6 bits is used to indicate logic channel, MAC-d to flow and the size of MAC-d PDU.The number of N field 135-1 indication and the corresponding continuous N AC-d PDU of DDI.(TSN) 125-1 that transmits Sequence Number that in each logic channel, all has 6 bits, whenever this sends MAC-e PDU, and this transmits Sequence Number and adds 1.Therefore, TSN 125-1 is used for the grouping rearrangement at Serving RNC (SRNC).

Fig. 2 is the figure of the HARQ operation of the configuration of diagram MAC-e and common UE.

With reference to 2, the MAC-e layer of UE comprises priority query (PQ) 205 and HARQ entity 210.

Before transmission, PQ 205 is the buffers that are used for storing according to priority the data that provide from the upper strata.A UE can comprise a plurality of PQ.A PQ storage has the data of equal priority.Usually the priority branch is tasked each independently logic channel.Create logic channel between rlc layer and MAC layer, in many cases, a user uses and is mapped to a logic channel arbitrarily.Therefore, a PQ and a logic channel associated, or with a plurality of logic channel associated with equal priority.

The operation of HARQ entity 210 control HARQ processors.That is, HARQ entity 210 can be determined to send for the first time or retransmit by analyzing ack/nack signal, and the transmission/reception that can control each HARQ processor.

In the HARQ processor 215,225,230 and 235 each all comprises soft buffer 220, and HARQ operation in the responsible radio channel.Term " HARQ operation " refers to be used for retransmit and soft merging carrying out in the physical layer data processed, thereby maximization retransmits the technology of gain.

The HARQ processor 215,225,230 and 235 that sends part sends data to receiving HARQ processor 240,245,250 and 255, and a previous storage that sends is in their soft buffer.

Each that receives in HARQ processor 240,245,250 and 255 determines whether the data that received are wrong.If the data that receive do not have mistake, then receive the HARQ processor accordingly and transmit ack signal, and send the HARQ processor accordingly and abandon the data that are stored in its soft buffer.Yet,, receive the HARQ processor accordingly and send the NACK signal if the data that receive have any mistake.The NACK signal allows relevant transmission HARQ processor to retransmit the data that are stored in its soft buffer, and this reception HARQ processor retransmits gain to data retransmission and the soft merging of data that is stored in its soft buffer thereby maximize then.

For promoting the realization of HARQ, UE sends ' retransmission number (RSN) ' of the MAC-e PDU number of retransmissions show present transmission by enhancement mode Dedicated Physical Control Channel (E-DPCCH), and wherein enhancement mode Dedicated Physical Control Channel (E-DPCCH) is a kind of control channel.RSN is set to the efficient of 2 bits with maximization radio part, and is set to 0 for sending RSN for the first time, is set to 1 for sending for the second time, be set to 2 for sending for the third time, for all for the third time or re-transmission afterwards all be set to 3, for example, the 4th time or later transmission.Yet in the wireline side from the Node B to RNC, RSN is set to 4 bits, and sends in user platform together with MAC-es PDU.

In this application, the 2 bit RSN that send in radio part (Uu interface) will be called as ' R-RSN ', and the 4 bit RSN that send in wireline side (Iub/Iur interface) will be called as ' N-RSN '.

Fig. 3 illustrates the figure that is sent to the exemplary 2ms-TTI mac frame of RNC from Node B.

With reference to 3, this 2ms-TTI mac frame comprises head, Payload and option.Head comprises DDI and the N of the MAC-es PDU of each independent SFN.Payload comprises the data of the MAC-es PDU of each independent SFN.Option comprises optional information.

" N of HARQ Retr " 320 and 340 is corresponding to N-RSN.Here, Connection Frame Number (CFN) 300 is called timestamp (TS) with the combination of subframe numbers (SFN) 310 and 330.TS represents that Node B successfully decodes moment of MAC-e PDU, and SRNC can utilize the moment of N-RSN and the first new PDU of transmission of TS prediction UE.For example, in 2ms-TTI, have under the situation that 8 HARQ handle, if CFN (300)=36, SFN (310)=2, and N-RSN (320)=7, then UE moment of sending MAC-e PDU for the first time can be calculated as follows:

The numbering * TTI*N-RSN=36*10ms+2*2ms-8*2ms*7=252ms (1) that the first Tx moment=CFN*10ms+SFN*2ms-HARQ handles

As mentioned above, the moment that SRNC prediction UE sends MAC-e PDU for the first time is CFN=25 (262ms/10ms), and SFN (252ms/10ms)/2ms)=1.Utilize this predicted value and be included in transmitting Sequence Number (TSN) or utilize exterior ring power control (OLPC) among each MAC-es PDU, SRNC can resequence from the MAC-es PDU of some Node B.

For reference, the power that the OLPC method utilizes retransmission count (or number of retransmissions) to adjust UE makes it reach signal-to-jamming ratio (SIR) target, and wherein sir target is to send error rate.OLPC can use as follows: it increases the power of UE to high RSN, and low RSN is reduced the power of UE.

Fig. 4 is the figure of diagram based on the EUDCH of synchronous HARQ.

Hypothesis has 4 HARQ to handle in Fig. 4, the unique number that on behalf of HARQ, the numeral 1 to 4 in the square frame handle.Behind the new MAC-e PDU 410 that sends for the first time corresponding to each processing,, then when sending same treatment, repeat to send identical PDU 420 and 430 if receive the NACK signal for this processing next time.Each time, the N-RSN that sends by E-DPCCH increases by 1.

In synchronous HARQ, the time interval that sends same treatment is regular.When receiving N-RSN, SRNC can utilize this N-RSN value from the operation of a plurality of Node B reception MAC-es PDU in the OLPC method or with reference to the rearrangement in a rearrangement buffer that Fig. 3 describes.

When Node B can not calculate correct RSN, SRNC will not know the situation of Node B.Therefore, SRNC may be in OLPC or use this RSN in the operation of rearrangement MAC-es PDU, and this causes operating mistake, wherein the MAC-es PDU that resequences of the RSN by incorrect re-transmission.

Therefore, exist to improved system with to being used for to the needs of SRNC report failure with the method for the correct retransmission count of calculating PDU.

Summary of the invention

An aspect of the embodiment of the invention is for the problems referred to above and/or shortcoming at least are described, and following at least advantage is provided.Therefore, an aspect of the embodiment of the invention provides a kind of when Node B can not be calculated the correct retransmission count of PDU, and Node B is reported the method for this situation to SRNC.

According to an aspect of exemplary embodiment of the present invention, a kind of method that sends grouped data in mobile communication system by uplink channel is provided, in this system, can use and mix automatic repeat requests (HARQ) technology retransmission packet.Receive Packet Data Unit (PDU) and make whether calculating and show determining of this PDU retransmission number (RSN) from terminal by the base station about this base station.If the base station can not calculate the RSN of this PDU, then this RSN is set to show that the number of retransmissions of this PDU is unknown particular value, and the RSN that will be provided with is sent to service radio network controller (SRNC) together with this PDU.

According to another aspect of the embodiment of the invention, a kind of base station apparatus that sends grouped data in mobile communication system by uplink channel is provided, in this system, can use and mix automatic repeat requests (HARQ) technology retransmission packet data.This device comprises receiver, is used for from terminal receiving packet data unit (PDU); Retransmission number (RSN) error detector is used for determining whether the base station has successfully received the RSN that shows this PDU number of retransmissions, and if this base station successfully do not receive the RSN of PDU, then this RSN is set to show that the number of retransmissions of this PDU is unknown particular value; And transmitter, RSN and this PDU of being used for being set to particular value are sent to service radio network controller (SRNC) together.

According to the detailed description that discloses exemplary embodiment of the present invention below in conjunction with accompanying drawing, it is more obvious that other target of the present invention, advantage and outstanding feature will become to those skilled in the art.

Description of drawings

According to follow-up explanation in conjunction with the accompanying drawings, above-mentioned and other exemplary goal, characteristics and the advantage of some exemplary embodiment of the present invention will become clearer, and accompanying drawing is as follows:

Figure 1A is the figure of the protocol architecture of the diagram common mobile communication system of supporting EUDCH;

Figure 1B is the figure of the form of the structure of MAC layer of the common UE of diagram and a MAC-e PDU;

Fig. 2 is the figure of the HARQ operation of the configuration of diagram MAC-e and common UE;

Fig. 3 is diagram is sent to the exemplary 2ms-TTI mac frame of RNC from Node B figure;

Fig. 4 is the figure of diagram based on the EUDCH of synchronous HARQ;

Fig. 5 is that R-RSN and the N-RSN figure of contingent problem simultaneously not on bit number is worked as in diagram;

Fig. 6 A be diagram according to exemplary embodiment of the present invention, Node B can't be calculated the figure of the process of RSN for the MAC-e PDU that success receives to SRNC report;

Fig. 6 B is the figure of diagram according to the concise structure of the device of exemplary embodiment of the present invention;

Fig. 7 A is the flow chart of diagram according to the Node B exemplary operation of exemplary embodiment of the present invention;

Fig. 7 B is the figure of diagram according to the exemplary process of passing through RSN decoding MAC-e PDU of exemplary embodiment of the present invention;

Fig. 8 A is diagram exemplary embodiment SRNC according to the present invention utilizes the exemplary process of information in to the grouping rearrangement a flow chart;

Fig. 8 B is that diagram is according to the figure of conventional method SRNC to the exemplary process of grouping rearrangement;

Fig. 8 C is the figure of diagram according to conventional method contingent problem during the grouping rearrangement of SRNC;

Fig. 9 be diagram according to the present invention another illustrative embodiment, SRNC receives the information show RSN the unknown and the flow chart that utilizes the exemplary process of this information in the OLPC operation.

In all figure, same reference numerals should be understood to indicate components identical, feature and structure.

Embodiment

Provide the content that defines in this specification of for example detailed structure and element to help comprehensively understand embodiments of the invention.Therefore, those of ordinary skills will appreciate that the various changes that can make embodiment described here and modification and do not deviate from scope and spirit of the present invention.And, for clear and concise and omitted description to well-known function and structure.

Fig. 5 is that R-RSN and the N-RSN figure of contingent problem simultaneously not on bit number is worked as in diagram.

With reference to figure 5, the continuous RSN value that the numeral in the square frame is corresponding with same treatment.Node B receives the R-RSN value 510 from UE.In the case, if this Node B receives R-RSN 515, explain that 520 and 540 all is possible for two kinds below then, wherein the value of R-RSN 515 is because taking defeat of E-DPCCH and be set to 3 at least after the taking defeat of three R-RSN 511 (below be designated as " R-RSN=3 ").

Explain in 520 that at first kind shown in Reference numeral 521, the

continuous value

2,3,3 of the R-RSN before Node B is set to the R-RSN value 511 that takes defeat is to determine that previous data are retransmitted continuously.Based on this explanation, shown in Reference numeral 531, consider the N-RSN value is set to 2,3 and 4, then Node B is set to 5 and it is sent to SNRC with the MAC-e PDU that is successfully received to N-RSN 535.

Explain in 540 at second kind, shown in Reference numeral 541, think in the R-RSN interval that takes defeat, to send

new data

0,1 and 2.In the case, shown in Reference numeral 551, consider that the N-RSN value is set to 0,1 and 2, then Node B is set to 3 and it is sent to SNRC with the MAC-e PDU that is successfully received to N-RSN 555.

When adopting second kind to explain, when Node B sent to SNRC to wrong N-RSN, operation failure may take place in SNRC in rearrangement or OLPC operation.Even first kind of explanation is correct, failure still can take place in operation, and vice versa.

Fig. 6 A be diagram according to exemplary embodiment of the present invention, Node B can't be calculated the figure of the process of RSN for the MAC-e PDU that success receives to SRNC report.

With reference to figure 6A,, then report that to SRNC 620 RSN of the MAC-e PDU that is received is a condition of unknown in step 640 Node B 610 if Node B 610 can not calculate RSN for the MAC-e PDU that success receives in step 630.

In this case, Node B 610 can be before being sent to SRNC 620 Fig. 3 in the 4 bit N-RSN (among Fig. 3 ' N of HARQ Retr ') of MAC-e PDU be set as a particular value (for example, binary number ' 1111 ').Some bit in 4 bits that are provided with in the N-RSN of 4 bits can be used for showing that the corresponding RSN of MAC-e PDU is unknown, and other bit can be used for showing the retransmission count of corresponding M AC-e PDU.

For example, if the re-transmission maximum possible number of times of UE is restricted to 7, the total transmission number of times that then comprises first transmission is 8.In this case, 3 LSB bits of 4 bits of N-RSN can be used for being provided with retransmission count, and 1 MSB bit can be used for showing that Node B 610 can not calculate the situation of the RSN of the MAC-e PDU that is received.Therefore, as this N-RSN during more than or equal to binary number ' 1000 ', this N-RSN can regard the particular value of afore mentioned rules as.

Fig. 6 B is the figure of diagram according to the structure of the device of exemplary embodiment of the present invention.

The device of Fig. 6 B comprises Node B 610, RSN error detector 614, the data transmitter 616 with MAC-e PDU receiver 612 and has data receiver 622 and the SRNC 620 of controller 624.

At first, the structure of description node B 610.

The MAC-e PDU that MAC-e PDU receiver 612 receives from UE with RSN.

Whether RSN error detector 614 exists any mistake from the RSN of also definite its acquisition of MAC-e PDU head acquisition RSN of reception.If wrong at the RSN that obtains, then the N-RSN of RSN error detector 614 MAC-ePDU is set to particular value and MAC-e PDU is sent to data transmitter 616.

In a kind of typical error situations, RSN error detector 614 is after detecting mistake from for example 3 or more a plurality of continuous RSN, and when it received RSN=3, this RSN error detector 614 determined that there is mistake in RSN.Yet except aforesaid this error situations, also there is some possible error situations.

For example, another error situations comprises a kind of Node B receives MAC-e PDU for the first time from UE switching transfer situation, and wherein the RSN of MAC-e PDU is set to 3 (RSN=3).

Data transmitter 616 receives the RSN that is set to particular value from RSN error detector 614, and the RSN that receives is sent to SRNC 620 with MAC-e PDU.

Secondly, the structure of SRNC 620 is described.

Data receiver 622 receives the MAC-e PDU with N-RSN from Node B 610.

Controller 624 obtains N-RSN from the MAC-e PDU that receives at data receiver 622, and whether definite N-RSN is set to particular value.If determine that N-RSN is set to particular value, the then operation of controller 624 control SRNC 620 so that only utilize MAC-e PDU transmit Sequence Number (TSN) that MAC-ePDU is carried out rearrangement operation or OLPC operation, and is not considered N-RSN.

Fig. 7 A is the flow chart of diagram according to the exemplary operation of the Node B of exemplary embodiment of the present invention.

With reference to figure 7A, determine in step 700 Node B whether it has received the E-DPCCH with R-RSN=3, or successfully do not receive R-RSN.If Node B receives successfully, then existing operation in its execution in step 705.And if Node B takes defeat, then it continues execution in step 710.

In step 710, Node B is attempted the data that receive from current E-DPCCH and before had been stored in the soft merging of data the soft buffer, so that recover correct RSN and the MAC-e PDU that decodes.In step 720, Node B determines whether the MAC-e PDU that successfully decoded.

If Node B decoding failure, then in step 730 its with the data storing of current reception in soft buffer.And if the Node B MAC-e PDU that successfully decodes, then Node B further determines whether successfully to have recovered RSN in step 740.

If Node B has successfully been recovered this RSN, then in step 750, be included in the RSN that the N-RSN among the MAC-es PDU is set to recover among its Fig. 3, and in step 770, this MAC-es PDU be sent to SRNC.

Yet, successfully do not recover RSN if in step 740, determine Node B, Node B advances to step 760.In step 760, when Node B had successfully received MAC-e PDU, even successfully do not recover RSN, Node B also N-RSN was set to particular value (for example, binary number ' 1111 ').Then, in step 770, this Node B is sent to SRNC to the MAC-es PDU with the N-RSN that is set to particular value.

Some bit in 4 bits that are provided with in the N-RSN of 4 bits can be used for showing that Node B can not calculate the situation of the RSN of corresponding M AC-e PDU, and other bit can be used for showing the retransmission count of corresponding M AC-e PDU.

If the maximum possible retransmission count of UE is restricted to 7,3 LSB bits in 4 bits that then are provided with in N-RSN can be used for being provided with retransmission count, and 1 MSB bit can be used for showing that Node B can not calculate the situation of the RSN of the MAC-e PDU that is received.For example, the 1MSB bit of Node B N-RSN is set to " 1 " (this information shows that the RSN of the MAC-e PDU of reception is unknown), and synthetic N-RSN is sent to this SRNC.

When receive show that Node B can not calculate the information of correct RSN the time, SRNC can utilize this information in grouping being carried out rearrangement or OLPC operation.

Fig. 7 B is the figure that diagram exemplary embodiment decoding according to the present invention has the MAC-e PDU exemplary process of RSN.

With reference to figure 7B, the incomplete data ' a ' of storing therein before the soft buffer of Node B has are to ' e ', and respectively corresponding to the RSN value ' 0 ' to ' 4 ' of data ' a ' to the storage of ' e ', wherein data ' a ' to ' e ' receive before being, handle #n (seeing 710-1) corresponding to HARQ.

When handling #n (seeing 700-1) corresponding to HARQ when the new time receives incomplete data ' f ' (unknown RSN), Node B is with the existing data ' a ' to ' e ' and the soft merging of these data ' f ' that are stored in the soft buffer.If the soft merging failure of Node B, then Node B RSN is set to the numeral than last RSN in this soft buffer big 1, and shown in Reference numeral 730-1 end value is stored in the soft buffer.This processing is corresponding with the step 730 of Fig. 7 A.

Replacedly, merge successfully if Node B is soft, then its RSN before recovering is set to the numeral than last RSN big 1 in the existing soft buffer, and shown in Reference numeral 720-1, and the data ' g ' of soft merging are sent to the upper strata.This processing is corresponding with the step 750 of Fig. 7 A.

As mentioned above, in Fig. 7 B, no matter soft merging success or not, Node B can both be recovered RSN.Yet if Node B can not calculate last RSN in the soft buffer, it can not recover the RSN of new data.In this case, Node B should advance to step 760 among Fig. 7 A.

Fig. 8 A is diagram utilizes the exemplary process of information in to the grouping rearrangement according to the SRNC of an exemplary embodiment of the present invention flow chart.

In the step 800 of Fig. 8 A, SRNC determines whether to receive N-RSN with particular value (for example, binary number ' 1111 ' or have binary number for ' 1 ' MSB bit).If SRNC receives the N-RSN with particular value, then in step 820, do not consider this RSN, and only utilize the TSN value to carry out the rearrangement operation.

Yet if SRNC does not receive the N-RSN with particular value, SRNC advances to step 810.In step 810, RSN in this SRNC utilization conventional method as shown in Equation (1) and TS value determine that UE carries out the first moment that sends, and utilize the TSN value to detect the tram that new PDU will be positioned in the buffer of resequencing then.

In order to resequence, conventional method uses UE to carry out the first moment that sends, and utilizes RSN and TS rather than utilizes TSN to obtain this moment.If this special moment be used to size that TSN has this rearrangement buffer of 6 bits greater than 64 bits unclear its situation that should insert new data wherein of SRNC prepare.

Fig. 8 B is that diagram SRNC is according to the figure of conventional method to the exemplary process of grouping rearrangement.

With reference to figure 8B, SRNC receives new data 810-1 under the state 800-1 of current rearrangement buffer.In this case, if only utilize TSN, then the part corresponding to TSN=61 will comprise two part 830-1 and 850-1 in rearrangement vacancy part 830-1,840-1 of buffer and 850-1, so SRNC can not determine that it should insert new data wherein.

Replacedly, if this SRNC utilizes TS and RSN to determine that UE carries out the first moment (UE delivery time) that sends according to formula (1) (seeing 820-1), then its moment that will determine and UE delivery time of being stored in the data in the rearrangement buffer compare, and determine its should be in the rearrangement buffer position of this new data of storage.

When the number of this HARQ processing was 5, the UE delivery time that utilizes this TS and RSN to determine was ' 39.0 ' (seeing 820-1).Therefore, SRNC determines that 830-1 partly is the tram.This determines that relatively TSN makes by after knowing the part that resulting UE delivery time 820-1 should be stored in by Reference numeral 830-1 or Reference numeral 840-1 indication.

When carrying out rearrangement with the conventional method shown in Fig. 8 B, the Node B that can not calculate correct RSN value can't be given SRNC with situation report.Therefore, if Node B is set as an arbitrary value to RSN, and consequent RSN is sent to SRNC, SRNC utilizes this RSN value of being arranged to arbitrary value to estimate first UE delivery time, then causes may makeing mistakes in rearrangement.

Fig. 8 C is the figure of diagram according to conventional method contingent problem during the grouping rearrangement of SRNC.

With reference to 8C, if Node B is under the state 800-2 of current rearrangement buffer, fail to recover correct RSN value 4 for the new data 810-2 that receives from UE, and the RSN=8 of mistake is sent to SRNC, then this SRNC calculates wrong UE delivery time according to formula (1).

Just, if calculating the UE delivery time shown in Reference numeral 820-2, SRNC is 49.0, and in the rearrangement operation, uses this UE delivery time that then SRNC will attempt data 820-2 is inserted between the part of being indicated by Reference numeral 830-2 and 850-2.Yet, because between the part that data 840-2 is Already in shown by Reference numeral 830-2 and 850-2, and between the comparable period of TSN, have wrong TSN, therefore in the rearrangement operation, make a mistake.

Yet, shown in Fig. 8 A, when Node B when the RSN of SRNC report corresponding data is wrong RSN true, SRNC only utilizes TSN value to carry out rearrangement and does not consider the RSN value of mistake.As a result, SRNC can partly carry out correct rearrangement by data 820-2 being inserted into by the vacancy of Reference numeral 860-2 indication.

As mentioned above, under the situation of using the conventional method execution rearrangement shown in Fig. 8 B and 8C, if SRNC does not show the information that the RSN value is wrong, then SRNC utilizes the N-RSN that is set to arbitrary value to estimate first UE delivery time, thereby causes may makeing mistakes in rearrangement.And as described in Fig. 8 A, SRNC does not consider that by only utilizing the TSN value wrong RSN value carries out rearrangement, may reduce the rearrangement error rate.

Fig. 9 is the flow chart that diagram SRNC utilizes the exemplary process of the information that is received.When the information of the RSN the unknown that receives indicating correct, according to another exemplary embodiment of the present invention, SRNC uses this information in the OLPC operation.

With reference to figure 9, SRNC determines in step 900 whether N-RSN has particular value.If N-RSN does not have particular value, then SRNC utilizes MAC-es PDU to carry out the OLPC operation of previous definition in step 910, and wherein this MAC-es PDU does not comprise the MAC-es PDU of the N-RSN with particular value.

Yet if N-RSN has particular value, SRNC utilizes MAC-es PDU to carry out the OLPC operation in step 920, and wherein this MAC-es PDU does not comprise the MAC-es PDU of the N-RSN with particular value.

Although described exemplary embodiment of the present invention with reference to the MAC-ePDU that sends by UE under the situation of in the WCDMA system, using EUDCH, but the present invention is not limited thereto, and also can be applicable to wherein, base station (or Node B) also is sent to this PDU any mobile communication system of SRNC from terminal (or UE) reception PDU.

When Node B can not calculate the HARQ retransmission count of EUDCH, it will show that this retransmission count is that unknown information sends to SRNC.In this case, if Node B is inserted arbitrary value in the retransmission count field, then this SRNC can avoid in rearrangement or OLPC operation operation failure taking place.

Although illustrate and described the present invention with reference to its some embodiment, yet those skilled in the art are to be understood that and can make the various changes on form and the details and not deviate from the spirit and scope of the present invention that defined by claims and its equivalent at this.

Claims

1. one kind is used for may using in this mobile communication system and mixing automatic repeat requests (HARQ) technology retransmission packet in the method for mobile communication system by uplink channel transmission grouped data, and this method comprises:

Receive the Packet Data Unit (PDU) of self terminal by the base station, and determine whether this base station may calculate the retransmission number (RSN) that shows this PDU;

If the base station can not calculate the RSN of this PDU, then this RSN is set to show that the number of retransmissions of this PDU is unknown particular value; And

RSN and this PDU of this setting are sent to service radio network controller (SRNC) together.

2. the method for claim 1, wherein this RSN step of being set to particular value comprises that further the RSN of this 4 bit is set to binary number " 1111 ".

3. the method for claim 1, wherein this RSN step of being set to particular value comprises that a part of bit among the bit of this RSN is set to show that the RSN of this PDU is unknown value, and other bit is set to show the value of the number of retransmissions of this PDU.

4. method as claimed in claim 2, wherein this RSN step of being set to particular value comprises 1 highest significant position (MSB) among 4 bits of this RSN is set to show that the RSN of this PDU is unknown value, 3 least significant bits (LSB) is set to show the value of the number of retransmissions of this PDU.

5. the method for claim 1, wherein this determining step comprises when the RSN of this PDU is set to maximum, determines that the base station can not calculate the RSN of this PDU.

6. the method for claim 1, wherein this determining step comprises:

This PDU decodes;

Determined whether successfully to recover the RSN of this decoded PDU; And

When successfully not recovering this RSN, determine that this base station can not calculate this RSN.

7. the method for claim 1 further comprises:

Receive PDU from the base station by this SRNC with the RSN that is set to particular value; And

Only utilize transmitting Sequence Number (TSN) of this PDU and the RSN that do not consider to be set to particular value comes this PDU is carried out the rearrangement operation by this SRNC.

8. the method for claim 1 further comprises:

Receive the PDU that RSN is set to particular value from the base station by this SRNC; And

Utilizing the data that receive from the base station except the PDU of the RSN that is set to particular value that received to carry out exterior ring power control (OLPC) by this SRNC operates.

9. a base station apparatus that sends grouped data in mobile communication system by uplink channel can use in mobile communication system and mix automatic repeat requests (HARQ) technology retransmission packet, and this device comprises:

Receiver is used for from terminal receiving packet data unit (PDU);

Retransmission number (RSN) error detector is used for determining whether the base station has successfully received the RSN of the number of retransmissions that shows this PDU, and when the base station did not successfully receive the RSN of PDU, this RSN was set to show the particular value of number of retransmissions the unknown of this PDU; And

Transmitter, RSN and this PDU of being used for being set to particular value are sent to service radio network controller (SRNC) together.

10. base station apparatus as claimed in claim 9, wherein when the RSN of this PDU was set to maximum, this RSN error detector determined that this base station does not successfully receive the RSN of this PDU.

11. base station apparatus as claimed in claim 9, wherein this RSN error detector decoding is from this PDU of terminal reception, whether the RSN that determines the PDU of this decoding is correctly recovered, and when this RSN is not correctly recovered, determines that this base station does not successfully receive this RSN.

12. base station apparatus as claimed in claim 9, wherein this RSN error detector 4 bit RSN are set to binary number " 1111 ".

13. base station apparatus as claimed in claim 9, wherein this RSN has a plurality of bits, and a part of bit in the bit of this RSN of this RSN error detector is set to show that the number of retransmissions of this PDU is unknown value, and other bit is set to show the value of the number of retransmissions of this PDU.

14. base station apparatus as claimed in claim 12, wherein this RSN error detector is set to show the value of number of retransmissions the unknown of this PDU to 1 highest significant position (MSB) among 4 bits of this RSN, and 3 least significant bits (LSB) is set to show the value of the number of retransmissions of this PDU.