CN102106176B - In mobile communication system for method for transmitting signals and the device of subscriber equipment - Google Patents
In mobile communication system for method for transmitting signals and the device of subscriber equipment Download PDFInfo
- Publication number
- CN102106176B CN102106176B CN200980128880.8A CN200980128880A CN102106176B CN 102106176 B CN102106176 B CN 102106176B CN 200980128880 A CN200980128880 A CN 200980128880A CN 102106176 B CN102106176 B CN 102106176B
- Authority
- CN
- China
- Prior art keywords
- allocation
- uplink transmission
- transmission resources
- resources message
- mac pdu
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 90
- 238000010295 mobile communication Methods 0.000 title claims abstract description 51
- 230000005540 biological transmission Effects 0.000 claims abstract description 407
- 238000012546 transfer Methods 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims description 5
- 230000004069 differentiation Effects 0.000 abstract description 4
- 230000003044 adaptive effect Effects 0.000 description 53
- 238000013468 resource allocation Methods 0.000 description 25
- 238000010586 diagram Methods 0.000 description 23
- 230000008569 process Effects 0.000 description 19
- 238000005516 engineering process Methods 0.000 description 6
- IESVDEZGAHUQJU-ZLBXKVHBSA-N 1-hexadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CC\C=C/C\C=C/C\C=C/C\C=C/C\C=C/C\C=C/CC IESVDEZGAHUQJU-ZLBXKVHBSA-N 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 241000760358 Enodes Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1835—Buffer management
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
There is provided a kind of method for transmitting signals and device of the subscriber equipment for mobile communication system, with by improving data transmission credibility and efficiency based on transmitting data to the accurate differentiation of the allocation of uplink transmission resources message representing initial transmission and re-transmission.For the method for transmitting signals of the subscriber equipment of mobile communication system from base station receiving uplink transfer resource assignment messages, determine whether mixed spin system (HARQ) buffer is empty, and when harq buffer device is empty, send the media access control protocol data unit (MAC PDU) generated with reference to the information be included in this allocation of uplink transmission resources message to base station.
Description
Technical field
The present invention relates to mobile communication system, specifically, relate to the method for transmitting signals for the subscriber equipment (UE) of mobile communication system and device, it can send data by the accurate differentiation based on the allocation of uplink transmission resources message to expression initial transmission and re-transmission and improve data transmission credibility and efficiency.
Background technology
Universal Mobile Telecommunications System (UMTS) is the one in the third generation (3G) mobile communication technology, and it is from global system for mobile communications (GSM) and GPRS (GPRS) System Development and use Wideband Code Division Multiple Access (WCDMA) (WCDMA).
The standardized third generation partner program (3GPP) of being responsible for UMTS is being devoted to the performance of significantly expansion UMTS in Long Term Evolution (LTE) system.LTE a kind ofly provides 3GPP standard up to the downlink speed of 100Mbps and expection will drop into business in 2010 uses.
In order to meet the demand of LTE system, be studied in all fields, these aspects comprise the number that minimizes the node comprised in connection and are arranged by wireless protocols as far as possible close to wireless channel.
Fig. 1 is the schematic diagram that LTE mobile communication system is shown.
As shown in Figure 1, LTE mobile communication system utilizes the evolution Radio Access Network (E-RAN) 110 and 112 only with two infrastructure node, and described two infrastructure node are: enode b (ENB or Node B) 120,122,124,126 and 128 and IAD (AG) 130 and 132.Subscriber equipment (UE) 101 is via E-RAN 110 and 112 access agreement (IP) network.
120,122,124,126 and 128 of ENB correspond to the conventional node B providing wireless access to serve to UE 101.120,122,124,126 and 128 of ENB is responsible for the function more more complicated than the function of conventional node B.In Next-Generation Wireless Communication Systems, come to be that all customer services comprising the such as real time service that ip voice (VoIP) is such provide service by shared channel.For this reason, there are the needs to the equipment of the state information for collecting UE and the scheduling based on state information.Each in ENB 120,122,124,126 and 128 is responsible for the scheduling of UE.In order to realize 100Mbps or speed faster, wireless communication system adopts the wireless access technology of OFDM (OFDM) in 20MHz bandwidth.And, support that adaptive modulation and coding (AMC) scheme is to determine modulation scheme and channel encoding rate according to the channel status of UE101.
Fig. 2 is the schematic diagram of the user-plane protocol stack framework that LTE mobile communication system is shown.As shown in Figure 2, UE has the protocol stack comprising packet data polymerized agreement (PDPC) layer 205, wireless spread-spectrum technology (RLC) layer 210, media interviews control (MAC) layer 215 and physics (PHY) layer 220.And ENB has the protocol stack comprising PDPC layer 240, rlc layer 235, MAC layer 230 and PHY layer 225.
PDCP layer 205 and 240 is responsible for IP header compress/decompress.Rlc layer 210 and 235 PDCP Packet Data Unit (PDU) is packaged into be suitable for transmit size and perform arq (ARQ) function.The data cell of sending from upper layer entity is PDU.MAC layer 215 and 230 provides service for multiple rlc layer entity.RLC PDU by rlc layer solid generation can be multiplexed with single MAC PDU and MAC PDU is demultiplexing as RLC PDU by MAC layer 215 and 230.Physical layer 220 and 225 pairs of upper layer datas are performed coding and modulate to be sent by wireless channel, and perform demodulation code to be delivered to upper strata to the OFDM symbol received by wireless channel.
In LTE mobile communication system, utilize mixed spin system (HARQ) for the transmitting of up link MAC PDU.In the mobile communication system using HARQ, when not receiving MAC PDU, receiver sends HARQ non-acknowledgement (NACK) and retransmits MAC PDU to transmitter with the transmitter making to receive HARQ NACK.Receiver performs soft combination initial transmission and one or more re-transmission to be combined.
In LTE mobile communication system, distribute uplink resource by allocation of uplink transmission resources message.Fig. 3 is the schematic diagram of the message format that exemplary allocation of uplink transmission resources message is shown.
With reference to figure 3, allocation of uplink transmission resources message comprises Resource Block (RB) allocation field 305, and it carries the amount of related resources and the information of position.In LTE mobile communication system, Resources allocation in units of the Resource Block being defined as the preset frequency bandwidth of 1 millisecond of length, and represent distributed resource by RB allocation field 305.
Allocation of uplink transmission resources message also comprises modulation and encoding scheme (MCS) field 310, and it represents the adaptive modulation and coding form that transmission data will adopt.This field is 5 bits and can carries to represent Quadrature Phase Shift Keying and 0.11 channel encoding rate 29 code-points to the combination of 64 quadrature amplitude modulation (QAM) and 0.95 channel encoding rate.All the other 3 code-points are used for representing redundancy versions (RV).With reference to table 1, MCS field 310 is described in more detail.
Table 1
Table 1 specifies in 3GPP 36.213V8.6.0 technical specification, for illustrating transport block size (TBS) index and according to the relation between the RV of the MCS index be included in MCS field 310.Reference table 1, the MCS rank from 0 to 28 represents RV=0 and each TBS index, and the MCS rank from 29 to 31 represents RV=1,2 and 3 and do not have TBS index respectively.
Allocation of uplink transmission resources message also comprises new data indicator (NDI) 315.NDI 315 is 1 bit informations, for representing that transfer resource assignment messages belongs to initial transmission or re-transmission.
Be described through the uplink HARQ operation of the NDI that allocation of uplink transmission resources message is carried out in the diagram.
Fig. 4 is the schematic diagram that successfully HARQ operation in the conventional mobile communications system of the NDI using allocation of uplink transmission resources message is shown.Put receiving uplink transfer resource assignment messages 405 sometime with reference to figure 4, UE, and after time T 410 passes, use the uplink resource 415 and MCS rank transmission MAC PDU that are represented by allocation of uplink transmission resources message 405.For the purpose of simplifying the description, the MAC PDU sent by the resource utilizing allocation of uplink transmission resources message 405 to distribute will be called MAC PDU A.Until send MAC PDU A completely, namely, receive to confirm for the HARQ of MAC PDU A (ACK) or reach number of retransmissions maximum number before, UE with HARQ two-way time (RTT) 417 for carrying out repeated retransmission 420 and 425 in interval.Complete MAC PDUA at particular point in time to transmit, and UE receives new allocation of uplink transmission resources message 430 from ENB.The NDI of new allocation of uplink transmission resources message is set to the value different from the value of the NDI of previous uplink transmission resource allocation message 405.If detect that NDI value changes, so allocation of uplink transmission resources message is just considered as new MAC PDU request message and begins through uplink resource 435 sending new MAC PDU, such as MAC PDUB by UE.As previously mentioned, UE with HARQ RTT for transmission 440 is repeated at interval.
In order to managing transmission resource effectively, ENB can distribute the re-transmission of different resources for current MACPDU.This technology is referred to as adaptive retransmission.By sending the allocation of uplink transmission resources message with identical NDI, ENB can ask adaptive retransmission to UE.Such as, if ENB wants by new RB reception MACPDU B after transmission allocation of uplink transmission resources message 430, so ENB just sends its NDI (=1) together with the identical allocation of uplink transmission resources message 433 of the NDI of previous uplink transmission resource allocation message 430 with new resource allocation information.If receive the allocation of uplink transmission resources message that its NDI is identical with the NDI of previous uplink transmission resource allocation message, so UE just determines to request adaptive retransmission to use newly assigned transfer resource 445 and 450 to send MAC PDU B.
In order to determine that allocation of uplink transmission resources message belongs to initial transmission or re-transmission, can suppose that all allocation of uplink transmission resources message that UE receives all are successfully received.
Fig. 5 is the schematic diagram of HARQ operation failure in the conventional mobile communications system of the NDI that use allocation of uplink transmission resources message is shown.With reference to figure 5, UE is putting receiving uplink transfer resource assignment messages 505 sometime and is using the uplink resource 515 that represented by allocation of uplink transmission resources message 505 and MCS rank to send MAC PDU, and with the HARQ RTT shown in Fig. 4 for the re-transmission 520 of MAC PDU is repeated at interval.After receiving MAC PDU completely, ENB sends new allocation of uplink transmission resources message 525, and its NDI (=1) is different from the NDI (=0) of previous uplink transmission resource allocation message 505.When new allocation of uplink transmission resources message 525 is lost, UE may not know to receive another allocation of uplink transmission resources message 530 when losing allocation of uplink transmission resources message 525---its NDI is set to 1---, and it has the NDI (=0) identical with the NDI of previous uplink transmission resource allocation message 505.Because at UE, the NDI (=0) of allocation of uplink transmission resources message 530 is mutually the same at the NDI receiving after previous uplink transmission resource allocation message 505 first message and two message received continuously, so it is retransmission request message that UE knows allocation of uplink transmission resources message 530 by mistake.
Summary of the invention
Technical problem
In order at least overcome the problem of prior art, the invention provides a kind of in mobile communication system for method for transmitting signals and the device of subscriber equipment, it can by improving data transmission credibility and efficiency based on sending data to the accurate differentiation of the allocation of uplink transmission resources message representing initial transmission and re-transmission.
Have again, the invention provides a kind of in mobile communication system for method for transmitting signals and the device of UE, its mixed spin system that can be improved UE by the allocation of uplink transmission resources message distinguishing expression initial transmission and the adaptive retransmission sent by ENB is operated.
Have again, the invention provides a kind of in mobile communication system for method for transmitting signals and the device of UE, it can run mixed spin system mechanism to the accurate differentiation of the allocation of uplink transmission resources message of the expression initial transmission sent by ENB and adaptive retransmission by utilizing and reduce the wasting of resources.
Technical scheme
According to embodiments of the invention, a kind of method for transmitting signals of the subscriber equipment for mobile communication system comprises: from base station receiving uplink transfer resource assignment messages; Determine whether mixed spin system harq buffer device is empty; And when harq buffer device is empty, the media access control protocol data unit MAC PDU generated with reference to the information be included in described allocation of uplink transmission resources message is sent to base station.
According to embodiments of the invention, a kind of subscriber equipment for mobile communication system comprises: transmission/reception unit, and it passes on physical downlink control channel PDCCH and business by wireless channel; PDCCH processing unit, it extracts allocation of uplink transmission resources message from the PDCCH received by described transmission/reception unit; Transfer resource control unit, it is based on mixed spin system (HARQ) buffer state be included in described allocation of uplink transmission resources message and new data indicator (NDI) and redundancy versions (RV), determines the initial transmission of the media access control protocol data unit (MAC PDU) whether described allocation of uplink transmission resources message represents new, the previously adaptive retransmission of MACPDU, the adaptive retransmission of new MAC PDU; HARQ unit, it performs HARQ operation; And upper unit, the upper layer operation of its process wireless spread-spectrum technology (RLC) equipment, packet data polymerized agreement (PDPC) equipment and MAC multiplexer.
Beneficial effect
As mentioned above, according to the method for transmitting signals for mobile communication system of the present invention and device, UE is distinguished exactly and represent the initial transmission of data and the allocation of uplink transmission resources message of re-transmission, reduce thus by the wasting of resources known caused by allocation of uplink transmission resources message by mistake.
Accompanying drawing explanation
Above-mentioned and other object of the present invention, characteristic sum benefit by from below in conjunction with more obvious in the detailed description of accompanying drawing, in accompanying drawing:
Fig. 1 is the schematic diagram that LTE mobile communication system is shown;
Fig. 2 is the schematic diagram of the user-plane protocol stack framework that LTE mobile communication system is shown;
Fig. 3 is the schematic diagram of the message format that exemplary allocation of uplink transmission resources message is shown;
Fig. 4 is the schematic diagram that successfully HARQ operation in the conventional mobile communications system of the NDI using allocation of uplink transmission resources message is shown;
Fig. 5 is the schematic diagram that HARQ operation failure in the conventional mobile communications system of the NDI using allocation of uplink transmission resources message is shown;
Fig. 6 illustrates may meet with in mobile communication system and the schematic diagram of the situation of problem solved by method for transmitting signals according to an embodiment of the invention;
Fig. 7 illustrates according to an embodiment of the invention, for the flow chart of the method for transmitting signals of mobile communication system;
Fig. 8 illustrates according to an embodiment of the invention, in mobile communication system for the schematic diagram of the sequence of the redundancy versions (RV) of request data retransmission;
Fig. 9 is the schematic diagram illustrating according to an embodiment of the invention, how to arrange in mobile communications the RV for adaptive retransmission;
Figure 10 illustrates the angle with UE, according to an embodiment of the invention, for the flow chart of the method for transmitting signals of mobile communication system;
Figure 11 be illustrate according to another embodiment of the present invention, for the flow chart of the method for transmitting signals of mobile communication system;
Figure 12 be illustrate according to another embodiment of the present invention, for the flow chart of the method for transmitting signals of mobile communication system;
Figure 13 illustrates according to an embodiment of the invention, for the schematic diagram of bundled transmission (bundled transmission) process of the method for transmitting signals of mobile communication system;
Figure 14 be illustrate according to another embodiment of the present invention, for the schematic diagram of the bundled transmission process of the method for transmitting signals of mobile communication system;
Figure 15 be illustrate according to another embodiment of the present invention, for the flow chart of the method for transmitting signals of mobile communication system; And
Figure 16 illustrates according to an embodiment of the invention, for the block diagram of the configuration of the signal transmitting apparatus of the UE of mobile communication system.
Embodiment
One exemplary embodiment of the present invention is described in detail with reference to accompanying drawing.Running through accompanying drawing uses identical reference marker to refer to identical or similar part.In order to avoid fuzzy theme of the present invention, the detailed description of known function and the structure be combined in this may be eliminated.
Only use NDI to distinguish in traditional HARQ mechanism of the allocation of uplink transmission resources message representing initial transmission and re-transmission at UE, UE possibly cannot distinguish message.In some embodiments of the invention, UE considers that NDI, RV and harq buffer device state distinguish the allocation of uplink transmission resources message representing initial transmission and re-transmission, distinguishes accuracy to improve.
Typically, represent that the allocation of uplink transmission resources message of the initial transmission of new grouping occurs, even if it is also like this that this allocation of uplink transmission resources message has the NDI identical with the NDI of previous uplink transmission resource allocation message after completing prior packet transmission.Consider this feature, according to some embodiments of the present invention, the UE receiving the allocation of uplink transmission resources message representing initial transmission in HARQ procedure calculates the last available re-transmission time, and if the last available re-transmission time expires, even if so MAC PDU transmits failure also refreshing (flush) harq buffer device.And, if when receiving allocation of uplink transmission resources message, harq buffer device does not have data in HARQ procedure, namely, allocation of uplink transmission resources message represents it is refreshing first allocation of uplink transmission resources message after harq buffer device, so UE determines that this allocation of uplink transmission resources message represents the initial transmission of new MAC PDU, and no matter the NDI value of this allocation of uplink transmission resources message is why.
Fig. 6 illustrates may meet with in mobile communication system and the schematic diagram of the situation of problem solved by method for transmitting signals according to an embodiment of the invention.
With reference to figure 6, UE receiving uplink transfer resource assignment messages 605, it represents the initial transmission of the new grouping of HARQ procedure X.Once receive the allocation of uplink transmission resources message 605 of the initial transmission representing new grouping, UE lights time elapse T with regard to wait from the time receiving this allocation of uplink transmission resources message, and uses the uplink transmission resource represented by the allocation of uplink transmission resources message for this HARQ procedure X to send MAC PDU 610.If receive NACK 625 in response to MACPDU 610, so UE just retransmits MAC PDU 615.With HARQ RTT for interval, repeat the re-transmission 615 and 620 of MAC PDU in response to NACK 625 and 630.Can repeated retransmission, until reach maximum retransmission.In figure 6, UE receives the HARQ ACK 635 in response to MAC PDU.When receiving HARQ ACK 635, UE stops the re-transmission of MAC PDU.Next, UE monitors maximum retransmission and 645 refreshes harq buffer device 640 for HARQ procedure X when maximum retransmit reaches.In figure 6, after UE completes the transmission of previous MAC PDU620, send the allocation of uplink transmission resources message 650 of the initial transmission representing new MAC PDU for HARQ procedure X, but UE fails receiving uplink transfer resource assignment messages 650.In this case, because UE does not send MAC PDU, so ENB decodes with the interval repetitive noise of HARQ and determines that when the last available re-transmission time expires the MAC PDU transmission of UE ends in failure.Pass a period of time the transmission from previous uplink transmission resource allocation message 650 after, ENB sends another allocation of uplink transmission resources message 655 of the initial transmission of the MAC PDU representing new to UE, and UE receiving uplink transfer resource assignment messages 655.In this case, the NDI of allocation of uplink transmission resources message 655 is set to 0, identical with the NDI of the allocation of uplink transmission resources message 605 that UE has received recently.If represent initial transmission or re-transmission with reference to NDI for distinguishing allocation of uplink transmission resources message 655, so the allocation of uplink transmission resources message 655 by mistake knowing the initial transmission of the MAC PDU representing new is the allocation of uplink transmission resources message of the re-transmission representing previous MAC PDU by UE.In an embodiment of the present invention, UE checks harq buffer device state, knows to avoid such mistake.If harq buffer device is not empty, so UE distinguishes allocation of uplink transmission resources message with reference to NDI.Otherwise if harq buffer device is empty, so UE determines that allocation of uplink transmission resources message represents the initial transmission of new MAC PDU and no matter NDI is why.
Fig. 7 illustrates according to an embodiment of the invention, for the flow chart of the method for transmitting signals of mobile communication system.
In step 705, the allocation of uplink transmission resources message for HARQ procedure is received with reference to figure 7, UE.Once receive allocation of uplink transmission resources message, UE just determines whether the harq buffer device for HARQ procedure is empty in step 720.If harq buffer device is empty, so UE determines that this allocation of uplink transmission resources message represents the initial transmission of new MAC PDU, and process proceeds to step 715.Otherwise if harq buffer device is not empty, so process proceeds to step 730.Then in step 730, UE determines that whether the NDI of allocation of uplink transmission resources message is by switch (toggle), that is, allocation of uplink transmission resources message represents the initial transmission of new MACPDU or the re-transmission of previous MAC PDU.
If harq buffer device is empty in step 720, this means that UE is asking to use the uplink transmission resource represented by this allocation of uplink transmission resources message to send new PDU.In a step 715, UE checks that redundancy versions (RV) is to determine whether this RV is set to 0.The RV being set to 0 means this allocation of uplink transmission resources message and represents the initial transmission of new MAC PDU but not retransmit.If RV is set to 0, so process proceeds to step 725.If RV is set to the value except 0, so process proceeds to step 720.Before explanation further progress, in more detail RV is described with reference to Fig. 8 and Fig. 9.
Fig. 8 be illustrate according to an embodiment of the invention, in mobile communication system for the schematic diagram of the order of the redundancy versions (RV) of request data retransmission, and Fig. 9 is the schematic diagram illustrating according to an embodiment of the invention, how to arrange in mobile communication system the RV for adaptive retransmission.
Be used for representing the part by the initial data retransmitted in HARQ procedure with reference to figure 8 and Fig. 9, RV field.Represent that the allocation of uplink transmission resources message of the initial transmission of new MAC PDU comprises transfer resource assignment information and MCS class information.The number of the Resource Block that the UE of receiving uplink transfer resource assignment messages represents based on allocation of uplink transmission resources message and MCS rank are determined the size of the data sent, and generate the MAC PDU 805 with determined size.The MCS rank represented according to allocation of uplink transmission resources message carries out chnnel coding to MAC PDU and the data 810 of channel coding are stored in the harq buffer device for corresponding HARQ procedure.UE sends a part for the data 810 of the channel coding represented by RV, and performs re-transmission with the sequential order of RV value.
The order of RV is defined as RV0, RV2, RV3 and RV1, and UE is with this sequential loop ground repeated retransmission.RV0, RV1, RV2 and RV3 point to the various piece 815,820,825 and 830 of the data 810 forming channel coding.In practice, the exemplary case shown in unlike Fig. 8, the part pointed to by RV is not continuous print.Usually, the order then according to RV2825, RV3830 and RV1820 from RV0815 is transmitted.Order of transmission be circulation with make have sent channel coding data a last part after send the data pointed to by RV0815.When adaptive retransmission, RV can be indicated in the allocation of uplink transmission resources message representing adaptive retransmission.Such as, if to receive the allocation of uplink transmission resources message 905 of initial transmission of the MAC PDU representing new sometime, so UE is just from after receiving and having passed time T 910 this allocation of uplink transmission resources message, passes through distributed uplink transmission resource and sends (the MAC PDU's) part pointed to by RV0915.Assuming that MAC PDU is retransmitted continuously, then UE is with HARQ RTT for interval, is sent the part pointed to by RV2920 and RV3925 by identical uplink transmission resource in order.At this moment wait, if need the re-transmission of UE to move to another uplink transmission resource, so ENB just send its NDI identical with the NDI of previous uplink transmission resource allocation message, the allocation of uplink transmission resources message 930 that represents the initial transmission of new MAC PDU.At this moment wait, ENB can change the sequential order of RV by the value of the RV resetting the allocation of uplink transmission resources message being used for adaptive retransmission.Such as, if the RV of the allocation of uplink transmission resources message being used for adaptive retransmission is reset to 2 by ENB, although be so the time sending the data pointed to by RV1, UE also sends the data pointed to by RV2935, and keep change after order until complete transmission or this order changed by ENB again.That is, order is changed to and RV3940, RV1945, RV0950 is followed sequentially sent after RV2935.As mentioned above, the RV being set to 0 represents that this allocation of uplink transmission resources message represents the initial transmission of new information but not adaptive retransmission.Therefore, MAC PDU is also stored in harq buffer device with reference to the information represented by allocation of uplink transmission resources message to generate new MAC PDU by UE after the channel encoding, and in step 725, send the data division pointed to by the RV of allocation of uplink transmission resources message.
Strictly speaking, for the allocation of uplink transmission resources message representing adaptive retransmission, RV can be set to 0.Such as, if represent that the allocation of uplink transmission resources message of adaptive retransmission is sent to the UE preparing the 5th transmission, so sequentially turn back to Initial R V order and make more efficient.But, RV0 is used to be used for adaptive retransmission if permit ENB, so may there is such possibility: namely UE can will represent that the allocation of uplink transmission resources message of adaptive retransmission knows the allocation of uplink transmission resources message for representing initial transmission by mistake, or vice versa.Therefore, in an embodiment of the present invention, disapproving ENB uses RV0 for adaptive retransmission.In other words, the RV of allocation of uplink transmission resources message must be set to nonzero value by ENB, and this allocation of uplink transmission resources message sends in the time that the data for being pointed to by RV0 are reserved and represents adaptive retransmission.By this strategy, efficiency of transmission can be sacrificed hardly to guarantee protocol reliability.
Turn back to Fig. 7, if RV is not set to 0 in a step 715, so UE determines that allocation of uplink transmission resources message represents the adaptive retransmission of new MAC PDU, and this means the allocation of uplink transmission resources message of the initial transmission that lost the MAC PDU representing new before receiving the allocation of uplink transmission resources message representing adaptive retransmission.As mentioned above, HARQ retransmits the maximum number being restricted to HARQ transmission.Therefore, when lost represent the allocation of uplink transmission resources message of initial transmission time, UE does not know to have sent the allocation of uplink transmission resources message that how many times represents adaptive retransmission.Last may retransmit time point if known by mistake, so UE can send data by disabled uplink transmission resource, and this resource at that time not for UE reserves, thus causes interference.Therefore, if the RV of allocation of uplink transmission resources message is set to nonzero value and harq buffer device is empty, so UE just ignores this allocation of uplink transmission resources message in step 720 and does not send data.
If harq buffer device is not empty in step 720, so UE just determines in step S730 that, compared with the allocation of uplink transmission resources message previously received with the last time, whether the NDI of current uplink transmission resource allocation message is by switch.If NDI is by switch, namely the NDI value of the allocation of uplink transmission resources message that the NDI of current uplink transmission resource allocation message is previously received with the last time for HARQ procedure is not identical, and so UE just determines that this allocation of uplink transmission resources message represents the initial transmission of new MAC PDU and refreshes harq buffer device in step 735.After having refreshed harq buffer device, process has proceeded to step 715.Otherwise, if NDI is not by switch, so UE just determines that this allocation of uplink transmission resources message represents the adaptive retransmission of previous MAC PDU, and uses the uplink transmission resource represented by this allocation of uplink transmission resources message to send a part for the coded data pointed to by RV be stored in harq buffer device in step 740.
Figure 10 illustrates the angle with UE, according to an embodiment of the invention, for the flow chart of the method for transmitting signals of mobile communication system.The HARQ procedure described in Figure 10 is similar to the HARQ procedure of Fig. 7 substantially, but by checking RV and more simplify before the inspection of harq buffer device.
In step 1005, the allocation of uplink transmission resources message for HARQ procedure X is received with reference to Figure 10, UE.Once receive allocation of uplink transmission resources message, UE just determines whether the RV of allocation of uplink transmission resources message is 0 in step 1010.If RV is set to 0, so UE just determines that allocation of uplink transmission resources message represents that the initial transmission of new MAC PDU proceeds to step 1015 to make process.In step 1015, UE generates new MAC PDU based on the information be included in allocation of uplink transmission resources message and performs chnnel coding to MAC PDU, the data that channel is encoded are stored in harq buffer device, then a part for the channel-encoded data pointed to by the RV of allocation of uplink transmission resources message is sent, i.e. RV0.
Otherwise if RV is not set to 0, UE determines whether the harq buffer device for HARQ procedure X is empty, that is, whether this allocation of uplink transmission resources message represents the initial transmission of new MAC PDU so in step 1020.If harq buffer device is empty, so UE determines that this allocation of uplink transmission resources message represents the adaptive retransmission of new MAC PDU.If RV is not set to 0 and harq buffer device is empty, so this means to lost the allocation of uplink transmission resources message of the initial transmission of the PDU representing new before receiving current uplink transmission resource allocation message, therefore in step 1025, UE ignores the allocation of uplink transmission resources message that is currently received and does not send data.If the harq buffer device in step 1020 for corresponding HARQ procedure is not empty, so in step 1030, UE just determines that, compared with the allocation of uplink transmission resources message previously received with the last time, whether the NDI of current uplink transmission resource allocation message is by switch.
If compared with the NDI value of the allocation of uplink transmission resources message previously received with the last time, the NDI of current uplink transmission resource allocation message is by switch, namely, if the NDI of current uplink transmission resource allocation message is different from the NDI of the last previously received allocation of uplink transmission resources message, so UE just determines that this allocation of uplink transmission resources message represents the adaptive retransmission of new MAC PDU and process proceeds to step 1025.If NDI does not have switch in step 1030, so UE just determines that this allocation of uplink transmission resources message represents the adaptive retransmission of previous MAC PDU, and process proceeds to step 1035.In step 1035, UE is sent by the uplink transmission resource represented by this allocation of uplink transmission resources message and is stored in harq buffer device and a part for the data of the channel pointed to by RV coding.
In brief, UE distinguish following three types allocation of uplink transmission resources message and according to the type operations of allocation of uplink transmission resources message.
The allocation of uplink transmission resources message of the first type is the allocation of uplink transmission resources message of the initial transmission representing new MAC PDU.When for harq buffer device be empty HARQ procedure receive its RV be set to the allocation of uplink transmission resources message of 0 time, allocation of uplink transmission resources message is confirmed as representing the allocation of uplink transmission resources message of the initial transmission of new MAC PDU, and UE sends uplink data according to normal initial transmission process thus.
The allocation of uplink transmission resources message of the second type is the allocation of uplink transmission resources message of the adaptive retransmission representing the MAC PDU be stored in harq buffer device.When for harq buffer device for empty HARQ procedure receive its RV be set to nonzero value and the allocation of uplink transmission resources message of NDI not by switch time, this allocation of uplink transmission resources message is confirmed as representing the allocation of uplink transmission resources message of the adaptive retransmission of the MAC PDU be stored in harq buffer device, and UE retransmits the MACPDU be stored in harq buffer device thus according to normal retransmission process.
The allocation of uplink transmission resources message of the third type is the allocation of uplink transmission resources message of the adaptive retransmission representing new MAC PDU.When for harq buffer device be empty HARQ procedure receive its RV be set to nonzero value allocation of uplink transmission resources message or for harq buffer device for empty HARQ procedure receive its RV be set to nonzero value and the allocation of uplink transmission resources message of NDI by switch time, this allocation of uplink transmission resources message is confirmed as representing the allocation of uplink transmission resources message of the adaptive retransmission of new MAC PDU, and UE ignores this allocation of uplink transmission resources message thus and do not send data.
In an embodiment of the present invention, propose a kind of allocation of uplink transmission resources message of NDI, RV and harq buffer device state that uses in bundled transmission and distinguish method and apparatus.
Figure 11 be illustrate according to another embodiment of the present invention, for the flow chart of the method for transmitting signals of mobile communication system.In this embodiment, first UE checks that NDI is to simplify the process distinguishing allocation of uplink transmission resources message.
With reference to Figure 11, in step 1105, UE receives the allocation of uplink transmission resources message for HARQ procedure X.Once receive allocation of uplink transmission resources message, UE just determines that whether previously received with the last time for HARQ procedure X the NDI of this allocation of uplink transmission resources message NDI be identical or increase from it in step 1110.The last previously received NDI can be the NDI for the last previously received allocation of uplink transmission resources message of corresponding HARQ procedure.
If compared with the NDI of the allocation of uplink transmission resources message previously received with the last time, the NDI of current uplink transmission resource allocation message is increased, namely, if the value of NDI has been changed, so UE just determines that this allocation of uplink transmission resources message represents the adaptive retransmission of new MAC PDU, to form new MAC PDU based on the information be included in this allocation of uplink transmission resources message, chnnel coding is performed to MAC PDU, the MAC PDU of channel coding is stored with the data mode of channel coding, and send a part for the data of the channel coding pointed to by the RV of this allocation of uplink transmission resources message in step 1115.In step 1115, UE forms new MAC PDU with reference to the information be included in this allocation of uplink transmission resources message and performs chnnel coding, new MAC PDU is stored in harq buffer device, and sends a part of the MAC PDU of the channel coding pointed to by the RV of this allocation of uplink transmission resources message.
If the NDI of the allocation of uplink transmission resources message that the NDI of current uplink transmission resource allocation message is previously received with the last time is identical, so in step 1120, UE just determines whether corresponding harq buffer device is empty.If harq buffer device is empty, so UE just determines that this allocation of uplink transmission resources message represents the initial transmission of new MAC PDU, proceeds to step 1115 to make process.Otherwise, if harq buffer device is not empty in step 1120, so UE just determines that this allocation of uplink transmission resources message represents the adaptive retransmission of previous MAC PDU, to use the uplink transmission resource represented by allocation of uplink transmission resources message to send a part for the coded data be stored in harq buffer device, this part is pointed to by the RV of allocation of uplink transmission resources message.
Figure 12 be illustrate according to another embodiment of the present invention, for the flow chart of the method for transmitting signals of mobile communication system.In this embodiment, UE is with reference to RV but not harq buffer device state distinguishes the allocation of uplink transmission resources message representing initial transmission and re-transmission, simultaneously by first checking that the NDI of allocation of uplink transmission resources message carrys out simplified message and distinguishes process.
With reference to Figure 12, in step 1205, UE receives the allocation of uplink transmission resources message for HARQ procedure X.Once receive allocation of uplink transmission resources message, UE just determines whether the NDI previously received with the last time for HARQ procedure X still increases from it the NDI of allocation of uplink transmission resources message in step 1210.
If the NDI of current uplink transmission resource allocation message increases from the NDI that the last time is previously received, if namely the value of NDI is changed, so in step 1215, UE just determines that this allocation of uplink transmission resources message represents the initial transmission of new MAC PDU to form new MAC PDU based on the information be included in this uplink resource allocation message, chnnel coding is performed to MAC PDU, the MAC PDU of channel coding is stored with the form of the data of channel coding, and send a part for the data of the channel coding pointed to by the RV of this allocation of uplink transmission resources message.
If the NDI of the allocation of uplink transmission resources message that the NDI of current uplink transmission resource allocation message is previously received with the last time is identical, so in step 1220, UE just determines whether the RV of this allocation of uplink transmission resources message is set to 0.If the RV of this allocation of uplink transmission resources message is set to 0, so UE just determines that this allocation of uplink transmission resources message represents the initial transmission of new MAC PDU, proceeds to step 1215 to make process.Otherwise, if the RV of this allocation of uplink transmission resources message is set to nonzero value in step 1220, so UE just determines that this allocation of uplink transmission resources message represents the adaptive retransmission of previous MAC PDU, to use the uplink transmission resource represented by allocation of uplink transmission resources message to send a part for the coded data be stored in harq buffer device, this part is pointed to by the RV of this allocation of uplink transmission resources message.
Bundled transmission is that such feature: UE uses uplink transmission resource data retransmission pre-determined number, to solve the problem caused by the through-put power shortage of cell boarder according to an embodiment of the invention.In bundled transmission, the same uplink transfer resource of UE by being distributed by ENB, sequentially sends the data pointed to by RV0, RV2, RV3 and RV1.ENB performs soft combination to the data received by 4 ul transmissions, carries out error checking, and send HARQ ACK or HARQ NACK to the data after combination.
Figure 13 illustrates according to an embodiment of the invention, for the schematic diagram of the bundled transmission process of the method for transmitting signals of mobile communication system.
With reference to Figure 13, represent that the allocation of uplink transmission resources message 1305 of the initial transmission of new MAC PDU is sent to the UE be configured to the operation of bundled transmission pattern.When receiving allocation of uplink transmission resources message 1305, UE, from after receiving and having passed time T allocation of uplink transmission resources message 1305, sends the data 1315 pointed to by RV0, RV2, RV3 and RV1 of being included in allocation of uplink transmission resources message 1305 for 4 Transmission Time Intervals (TTI).If receive HARQ NACK after transmitting data, so UE is just with the data 1325 that the HARQ RTT 1320 defined for bundled transmission is pointed to by RV0, RV2, RV3 and RV4 for interval re-transmission.
In bundled transmission, identical RV is used for initial transmission and re-transmission.That is, the RV of the RV representing the allocation of uplink transmission resources message of adaptive retransmission and the allocation of uplink transmission resources message representing initial transmission is mutually the same.Such as, when sending the allocation of uplink transmission resources message 1330 representing adaptive retransmission, the RV of allocation of uplink transmission resources message 1330 is set to the RV value of the allocation of uplink transmission resources message 1305 previously sent by ENB.When identical RV is used for initial transmission and re-transmission, UE should distinguish with reference to NDI and harq buffer device state the allocation of uplink transmission resources message representing initial transmission and re-transmission.If as previously mentioned, represent the allocation of uplink transmission resources information drop-out of initial transmission, so just cannot distinguish by means of only NDI and harq buffer device state the allocation of uplink transmission resources message representing initial transmission and re-transmission.Assuming that represent that the allocation of uplink transmission resources message 1305 of initial transmission is lost, UE is made to receive the allocation of uplink transmission resources message 1330 representing and retransmit when not knowing allocation of uplink transmission resources message 1305, so compared with previous allocation of uplink transmission resources message 1305, NDI probably in allocation of uplink transmission resources message 1330 by switch.Therefore, UE probably will represent that the allocation of uplink transmission resources message of adaptive retransmission knows the allocation of uplink transmission resources message for representing initial transmission by mistake.
In order to solve this problem, RV is set to represent number of retransmissions but not point to corresponding data by method for transmitting signals according to an embodiment of the invention.
Figure 14 be illustrate according to another embodiment of the present invention, for the schematic diagram of the bundled transmission process of the method for transmitting signals of mobile communication system.
With reference to Figure 14, when representing the allocation of uplink transmission resources message 1405 of initial transmission and representing that the first to the three allocation of uplink transmission resources message 1420,1430 and 1440 retransmitted presses sequential order transmission, the RV of allocation of uplink transmission resources message 1405,1420,1430 and 1440 is set to 0,1,2 and 3 by ENB respectively.That is, the value of RV increases progressively with 1 from 0 along with the transmission times increase of allocation of uplink transmission resources message.
If for its buffer not for the RV of the allocation of uplink transmission resources message of empty HARQ procedure is set to nonzero value, namely, if receive the allocation of uplink transmission resources message representing adaptive retransmission when not receiving the allocation of uplink transmission resources message representing initial transmission, so UE just ignores the allocation of uplink transmission resources message representing adaptive retransmission.
Figure 15 be illustrate according to another embodiment of the present invention, for the flow chart of the method for transmitting signals of mobile communication system.
In step 1505, the allocation of uplink transmission resources message for HARQ procedure X is received with reference to Figure 15, UE.Once receive allocation of uplink transmission resources message, UE just determines in step 1510 whether the RV of allocation of uplink transmission resources message is set to 0.If the RV of this allocation of uplink transmission resources message is set to 0, so in step 1513, UE determines that this allocation of uplink transmission resources message represents the initial transmission of new MAC PDU and determines whether this allocation of uplink transmission resources message represents bundled transmission.Whether allocation of uplink transmission resources message represents that bundled transmission is configured by the control signal on upper strata.If allocation of uplink transmission resources message table shows bundled transmission, so process proceeds to step 1517.Otherwise if allocation of uplink transmission resources message does not represent bundled transmission, so process proceeds to step 1515.In step 1515, UE generates new MAC PDU based on the information extracted from this allocation of uplink transmission resources message, and chnnel coding is performed to this MACPDU, the data that channel is encoded are stored in harq buffer device, and send the data pointed to by the RV (=0) of allocation of uplink transmission resources message.In step 1517, UE generates new MAC PDU based on the information extracted from allocation of uplink transmission resources message and performs chnnel coding to MAC PDU, the data that channel is encoded are stored in harq buffer device, and send the data pointed to by RV0, RV2, RV3 and RV1 with sequential order.
If the RV of allocation of uplink transmission resources message is set to nonzero value, so in step 1520, UE determines whether the harq buffer device for HARQ procedure X is empty.If harq buffer device is empty, so UE determines that this allocation of uplink transmission resources message represents the adaptive retransmission of new MACPDU.Here, empty harq buffer device means the allocation of uplink transmission resources message of the initial transmission that lost the MAC PDU representing new after refreshing harq buffer device.As previously mentioned, HARQ retransmits the maximum number being restricted to HARQ transmission.Therefore, when lost represent the allocation of uplink transmission resources message of initial transmission time, UE does not know to have sent the allocation of uplink transmission resources message that how many times represents adaptive retransmission.Last may retransmit time point if known by mistake, so UE can send data by disabled uplink transmission resource, and this resource at that time not for UE reserves, thus causes interference.Therefore, if the RV of allocation of uplink transmission resources message is set to nonzero value and harq buffer device is empty, so UE just ignores this allocation of uplink transmission resources message and does not send data in step 1525.If in step 1520, harq buffer device is not empty, and so in step 1530, UE just determines that, compared with the allocation of uplink transmission resources message previously received with the last time, whether the NDI of current uplink transmission resource allocation message is by switch.
If the NDI of current uplink transmission resource allocation message is by switch, namely, the NDI value of the allocation of uplink transmission resources message that the NDI of current uplink transmission resource allocation message is previously received with the last time for HARQ procedure is not identical, so UE just determines that this allocation of uplink transmission resources message represents the re-transmission of new MAC PDU, and process proceeds to step 1525.Otherwise if NDI is not by switch, so UE determines that in step 1533 this allocation of uplink transmission resources message represents the adaptive retransmission of previous MAC PDU, and determines whether this allocation of uplink transmission resources message represents bundled transmission.If this allocation of uplink transmission resources message does not represent bundled transmission, so in step 1535, UE just uses the uplink transmission resource represented by this allocation of uplink transmission resources message, sends (coded data harq buffer device in by RV0, RV2, RV3 and RV1 pointed to) part corresponding to the RV of this allocation of uplink transmission resources message.Otherwise, if allocation of uplink transmission resources message table shows bundled transmission, so UE just ignores the RV of this allocation of uplink transmission resources message, and in step 1537, send the data (MAC PDU) be stored in harq buffer device with the order of RV0, RV2, RV3 and RV1.
In brief, UE distinguish following three types allocation of uplink transmission resources message and according to the type operations of allocation of uplink transmission resources message.
The allocation of uplink transmission resources message of the first type is the allocation of uplink transmission resources message of the initial transmission representing new MAC PDU.When for harq buffer device be empty HARQ procedure receive its RV be set to the allocation of uplink transmission resources message of zero time, allocation of uplink transmission resources message is confirmed as representing the allocation of uplink transmission resources message of the initial transmission of new MAC PDU, and UE sends uplink data according to normal initial transmission process thus.
The allocation of uplink transmission resources message of the second type is the allocation of uplink transmission resources message of the adaptive retransmission representing the MAC PDU be stored in harq buffer device.When not being set to nonzero value and compared with previous uplink transmission resource allocation message during the allocation of uplink transmission resources message of its NDI by switch for empty HARQ procedure receives its RV for harq buffer device, this allocation of uplink transmission resources message is confirmed as representing the allocation of uplink transmission resources message of the adaptive retransmission of the MAC PDU be stored in harq buffer device, and UE retransmits the MAC PDU be stored in harq buffer device thus according to normal retransmission process.Be configured to the RV ignoring allocation of uplink transmission resources message with the UE of bundled transmission pattern operation, and send the data be stored in harq buffer device with sequential order, such as, with the order of RV0, RV2, RV3 and RV1.
The allocation of uplink transmission resources message of the third type is the allocation of uplink transmission resources message of the adaptive retransmission representing new MAC PDU.When for harq buffer device be empty HARQ procedure receive its RV be set to nonzero value allocation of uplink transmission resources message or for harq buffer device for empty HARQ procedure receive its RV be set to nonzero value and the allocation of uplink transmission resources message of NDI by switch time, this allocation of uplink transmission resources message is confirmed as representing the allocation of uplink transmission resources message of the adaptive retransmission of new MAC PDU, and UE ignores this allocation of uplink transmission resources message thus and do not send data.
Figure 16 illustrates according to an embodiment of the invention, for the block diagram of the structure of the signal transmitting apparatus of the UE of mobile communication system.
With reference to Figure 16, signal transmitting apparatus comprises upper unit 1605, HARQ unit 1610, transfer resource control unit 1620, transmission/reception unit 1625 and PDCCH processing unit 1630.
Transmission/reception unit 1625 is responsible for receiving physical downlink control channel (PDCCH) by wireless channel and passing on other business.Transmission/reception unit 1625 is decoded the signal that receives on PDCCH and export decoded signal to PDCCH processing unit 1630.
PDCCH processing unit 1630 performs CRC check to the decoded signal that exported by transmission/reception unit 1625, and exports by the allocation of uplink transmission resources message of CRC check to transfer resource control unit 1620.Transfer resource control unit 1620 extracts NDI and RV from allocation of uplink transmission resources message, and distinguishes the initial transmission of the new MAC PDU of expression with reference to NDI, RV and harq buffer device state, represent the allocation of uplink transmission resources message of the adaptive retransmission of MAC PDU and the adaptive retransmission of new MAC PDU be stored in harq buffer device.If allocation of uplink transmission resources message represents the initial transmission of new MAC PDU, so transfer resource control unit 1620 controls the size of the MAC PDU that upper unit 1605 is determined to send with reference to the quantity of distributed transmission block and MCS rank, generate the MAC PDU with determined size, and this MAC PDU is delivered to HARQ procedure.If allocation of uplink transmission resources message represents the adaptive retransmission of previous MAC PDU, so transfer resource control unit 1620 performs the adaptive retransmission of previous MAC PDU with regard to control HARQ unit 1610.If allocation of uplink transmission resources message represents the adaptive retransmission of new MAC PDU, so transfer resource control unit 1620 is just ignored this allocation of uplink transmission resources message and is not sent data.
Upper unit 1605 represents the multiplexer of PDCP layer equipment and MAC layer.HARQ unit 1610 comprises multiple HARQ procedure and performs HARQ operation for each in HARQ procedure.
Industrial applicibility
Although describe embodiments of the invention in detail above, but should be expressly understood that, many changes of the basic inventive concept instructed here can found out for those skilled in the art and/or amendment are by the spirit and scope of the present invention that still fall into as claims definition.
Claims (10)
1., for a method for transmitting signals for the subscriber equipment of mobile communication system, comprise step:
When comprising the allocation of uplink transmission resources message of new data indicator (NDI) from base station reception, check the state of mixed spin system harq buffer device;
If harq buffer device is empty, then send new media access control protocol data unit (MAC PDU) to base station and no matter NDI is why; And
If harq buffer device is not empty, then determine the initial transmission of new MAC PDU or the re-transmission of previous MAC PDU according to described NDI.
2. method for transmitting signals as claimed in claim 1, also comprises step: if described NDI is by switch, then sends new MAC PDU.
3. method for transmitting signals as claimed in claim 1, also comprises step: if described NDI is not by switch, then retransmit MAC PDU.
4. method for transmitting signals as claimed in claim 1, also comprises step:
Receive the message of the initial transmission represented in HARQ procedure, this message comprises the maximum number of transmission; And
Calculate the last available re-transmission time.
5. method for transmitting signals as claimed in claim 4, also comprises step: if the described last available re-transmission time expire, even if then MAC PDU transmits failure and also refreshes described buffer.
6., for a subscriber equipment for mobile communication system, comprising:
Transmission/reception unit, for passing on signal by wireless channel and base station;
PDCCH (physical downlink control channel) processing unit, for extracting the allocation of uplink transmission resources message received by described transmission/reception unit;
Transfer resource control unit, for checking the state of mixed spin system harq buffer device when receiving from base station and comprising the allocation of uplink transmission resources message of new data indicator (NDI), if harq buffer device is empty, send to base station new media access control protocol data unit (MAC PDU) and no matter NDI why, and if harq buffer device empty, determine the initial transmission of new MAC PDU or the re-transmission of previous MAC PDU according to described NDI.
7. subscriber equipment as claimed in claim 6, wherein, if described NDI is by switch, then described transfer resource control unit sends new MAC PDU.
8. subscriber equipment as claimed in claim 6, wherein, if described NDI is not by switch, then described transfer resource control unit retransmits MAC PDU.
9. subscriber equipment as claimed in claim 6, wherein, described transfer resource control unit receives the message of the initial transmission represented in HARQ procedure, and this message comprises the maximum number of transmission, and calculates the last available re-transmission time.
10. subscriber equipment as claimed in claim 9, wherein, if the described last available re-transmission time expire, even if then MAC PDU transmits the described transfer resource control unit of failure and also refreshes described buffer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310727289.2A CN103716141B (en) | 2008-08-04 | 2009-07-23 | It is used for the method for transmitting signals and device of user equipment in mobile communication system |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2008-0076142 | 2008-08-04 | ||
| KR20080076142 | 2008-08-04 | ||
| KR10-2008-0087276 | 2008-09-04 | ||
| KR1020080087276A KR101515042B1 (en) | 2008-08-04 | 2008-09-04 | Apparatus and method for processing a message to assign uplink resource |
| PCT/KR2009/004100 WO2010016669A2 (en) | 2008-08-04 | 2009-07-23 | Signal transmission method and apparatus for user equipment in mobile communication system |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310727289.2A Division CN103716141B (en) | 2008-08-04 | 2009-07-23 | It is used for the method for transmitting signals and device of user equipment in mobile communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102106176A CN102106176A (en) | 2011-06-22 |
| CN102106176B true CN102106176B (en) | 2015-08-26 |
Family
ID=42088420
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980128880.8A Active CN102106176B (en) | 2008-08-04 | 2009-07-23 | In mobile communication system for method for transmitting signals and the device of subscriber equipment |
| CN201310727289.2A Active CN103716141B (en) | 2008-08-04 | 2009-07-23 | It is used for the method for transmitting signals and device of user equipment in mobile communication system |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310727289.2A Active CN103716141B (en) | 2008-08-04 | 2009-07-23 | It is used for the method for transmitting signals and device of user equipment in mobile communication system |
Country Status (3)
| Country | Link |
|---|---|
| JP (2) | JP5977946B2 (en) |
| KR (1) | KR101515042B1 (en) |
| CN (2) | CN102106176B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11139862B2 (en) * | 2012-11-02 | 2021-10-05 | Samsung Electronics Co., Ltd. | Configuration of rate matching and interference measurement resources for coordinated multi-point transmission |
| EP2816840B1 (en) | 2013-03-21 | 2017-01-04 | Huawei Device Co., Ltd. | Adaptive transmission scheme with two modes of operation |
| KR102102666B1 (en) * | 2013-08-09 | 2020-04-22 | 삼성전자 주식회사 | Method and apparatus for transmitting and receiving data using multiple carrier in mobile communication system |
| ES2919955T3 (en) * | 2016-03-31 | 2022-07-29 | Sony Group Corp | Terminal device, base station device and communication method |
| EP3455971B1 (en) * | 2016-05-13 | 2021-11-17 | Panasonic Intellectual Property Corporation of America | Short latency fast retransmission triggering |
| KR102576714B1 (en) | 2017-12-04 | 2023-09-11 | 삼성전자주식회사 | Method and apparatus for uplink data transmission in wireless communication system |
| WO2021062846A1 (en) * | 2019-09-30 | 2021-04-08 | 华为技术有限公司 | Communication method and apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1645786A (en) * | 2003-11-14 | 2005-07-27 | 三星电子株式会社 | Method and apparatus for transmitting/receiving a control signal on a high speed shared control channel |
| CN101009537A (en) * | 2006-01-26 | 2007-08-01 | 华为技术有限公司 | A data retransfer method and system |
| CN101039452A (en) * | 2006-03-15 | 2007-09-19 | 华为技术有限公司 | Method for transmitting scheduling information of enhanced dedication channel and system thereof |
| CN101060387A (en) * | 2006-04-17 | 2007-10-24 | 华为技术有限公司 | HARQ-based data transmission method |
| WO2008041824A2 (en) * | 2006-10-02 | 2008-04-10 | Lg Electronics Inc. | Methods for retransmitting data in the multi-carrier system |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6021124A (en) * | 1997-08-19 | 2000-02-01 | Telefonaktiebolaget Lm Ericsson | Multi-channel automatic retransmission query (ARQ) method |
| US7292854B2 (en) * | 2002-02-15 | 2007-11-06 | Lucent Technologies Inc. | Express signaling in a wireless communication system |
| US20070008990A1 (en) * | 2003-04-10 | 2007-01-11 | Johan Torsner | Method and system for retransmission |
| DE60325394D1 (en) * | 2003-12-19 | 2009-01-29 | Panasonic Corp | HARQ protocol with synchronous repeats |
| US7584397B2 (en) * | 2004-06-10 | 2009-09-01 | Interdigital Technology Corporation | Method and apparatus for dynamically adjusting data transmission parameters and controlling H-ARQ processes |
| DE602004018325D1 (en) * | 2004-11-03 | 2009-01-22 | Panasonic Corp | HARQ protocol optimization for packet data transmission |
| KR100943590B1 (en) * | 2006-04-14 | 2010-02-23 | 삼성전자주식회사 | Method and apparatus for transmitting and receiving status report in a mobile communication system |
| JP5035969B2 (en) * | 2006-04-27 | 2012-09-26 | イノヴァティヴ ソニック リミテッド | Method and apparatus for processing packet data in a wireless communication system |
| WO2007129645A1 (en) * | 2006-05-01 | 2007-11-15 | Ntt Docomo, Inc. | Mobile station, base station, and communication control method |
| CN101155013B (en) * | 2006-09-30 | 2012-02-01 | 上海无线通信研究中心 | HARQ and ARQ interactive cooperation method |
| WO2008081222A1 (en) * | 2006-12-28 | 2008-07-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Next data indicator handling |
| JP5481201B2 (en) * | 2007-01-08 | 2014-04-23 | インターデイジタル テクノロジー コーポレーション | Method and apparatus for multicasting feedback information |
-
2008
- 2008-09-04 KR KR1020080087276A patent/KR101515042B1/en active IP Right Grant
-
2009
- 2009-07-23 CN CN200980128880.8A patent/CN102106176B/en active Active
- 2009-07-23 JP JP2011521995A patent/JP5977946B2/en active Active
- 2009-07-23 CN CN201310727289.2A patent/CN103716141B/en active Active
-
2015
- 2015-06-09 JP JP2015117003A patent/JP2015188255A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1645786A (en) * | 2003-11-14 | 2005-07-27 | 三星电子株式会社 | Method and apparatus for transmitting/receiving a control signal on a high speed shared control channel |
| CN101009537A (en) * | 2006-01-26 | 2007-08-01 | 华为技术有限公司 | A data retransfer method and system |
| CN101039452A (en) * | 2006-03-15 | 2007-09-19 | 华为技术有限公司 | Method for transmitting scheduling information of enhanced dedication channel and system thereof |
| CN101060387A (en) * | 2006-04-17 | 2007-10-24 | 华为技术有限公司 | HARQ-based data transmission method |
| WO2008041824A2 (en) * | 2006-10-02 | 2008-04-10 | Lg Electronics Inc. | Methods for retransmitting data in the multi-carrier system |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101515042B1 (en) | 2015-04-24 |
| CN103716141B (en) | 2018-03-27 |
| CN103716141A (en) | 2014-04-09 |
| KR20100015266A (en) | 2010-02-12 |
| JP5977946B2 (en) | 2016-08-24 |
| JP2015188255A (en) | 2015-10-29 |
| JP2011530259A (en) | 2011-12-15 |
| CN102106176A (en) | 2011-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10700823B2 (en) | Signal transmission method and apparatus for user equipment in mobile communication system | |
| CN100359838C (en) | Method and apparatus for managing polling request in data communications | |
| US9356739B2 (en) | Method and system for providing autonomous retransmissions in a wireless communication system | |
| CN2696247Y (en) | Transmission block group base station | |
| CN101009538B (en) | A data retransfer method and device | |
| CN102106176B (en) | In mobile communication system for method for transmitting signals and the device of subscriber equipment | |
| CN102160304B (en) | Retransmission resource allocation method and device for wireless communication system | |
| US20020064167A1 (en) | Hybrid ARQ with parallel packet transmission | |
| JP3955462B2 (en) | How to send data | |
| JP2003143645A (en) | Method for retransmitting information on communication channel of wireless communication system | |
| CN100438397C (en) | Dow data repeating method in radio communication system | |
| EP1776797B1 (en) | Packet-based data processing technique, transmission and reception | |
| CN101568153A (en) | Method and device for transmitting small packet services in real time | |
| CN101237297A (en) | A method, device and system for transmitting control information of enhanced uplink dedicated channel | |
| JP2003523645A (en) | Wireless communication system and method supporting link adaptation mode | |
| WO2019128937A1 (en) | Uplink data scheduling method and relevant device | |
| WO2010124418A1 (en) | Method and system for controlling the data repeat | |
| CN2788494Y (en) | Customer device | |
| CN102882664B (en) | For providing the method and system of autonomous retransmissions in a wireless communication system | |
| CN1561601A (en) | Method of adaptive multi-channel error control character for wireless data transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |