CN101296059A - Error detection and retransmission methods and devices for communication systems - Google Patents

Error detection and retransmission methods and devices for communication systems Download PDF

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Publication number
CN101296059A
CN101296059A CNA2007101021734A CN200710102173A CN101296059A CN 101296059 A CN101296059 A CN 101296059A CN A2007101021734 A CNA2007101021734 A CN A2007101021734A CN 200710102173 A CN200710102173 A CN 200710102173A CN 101296059 A CN101296059 A CN 101296059A
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error
data
harq
indicator
value
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邱俊渊
曾俊杰
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Industrial Technology Research Institute ITRI
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Industrial Technology Research Institute ITRI
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Abstract

A method for identifying errors in a wireless communication system includes transmitting, by a transmitting device, data to a receiving device; receiving, from the receiving device, a receipt message, wherein the receipt message is in response to the data; receiving, from the receiving device, an error indicator, wherein the error indicator is associated with the data; and determining an error type based on at least one of the receipt message and the error indicator.

Description

The error-detecting method of communication system and called station and communicator
Technical field
The present invention relates to a kind of apparatus and method of communication system, particularly relevant with the apparatus and method of heavily sending with the error detection of data communication system.
Background technology
Wireless communication system (wireless communication system) allows wireless device, need can not communicate by letter by wired connection, because wireless system more and more combines with daily life, and the demand of the multimedia service of wireless communication system is also more and more higher, as services such as voice (speech), sound (audio), image, file and network download.Wireless device is in order to support multimedia service, develop various wireless communication protocol, with the multimedia service demand of energy compliance with wireless communication network.
A kind of wireless communication protocol wherein is that (Wideband Code DivisionMultiple Access W-CDMA), is by third generation mobile partner program (3 in the Wideband Code Division Multiple Access (WCDMA) access RdGeneration Partnership Project, 3GPP TM) issue, it is to organize institute's joint research by many standard evolution.W-CDMA is the mobile air interface of a wide-band spread spectrum (spread-spectrum) (airinterface), and it uses the code division multiple access of direct sequence to insert (Code Division Multiple Access, CDMA) system.W-CDMA has two basic working modes: Frequency Division Duplexing (FDD) (FrequencyDivision Duplex, FDD) pattern and time division duplex (Time Division Duplex, TDD) pattern.
Among some embodiment, W-CDMA can support that (High SpeedDownlink Packet Access, HSDPA), its packet data air interface can make the transfer of data optimization of the grouped data of higher bit transfer rate to high speed downlink packet access technology.HSDPA also provides a plurality of channels (channel) set (upload and pass down), and the relative program that allows the high-speed transfer grouped data.
For example, W-CDMA can be used to the universal mobile communications service (Universal MobileTelecommunications System, UMTS) in, it is a kind of mobile communication technology type.The UMTS communication system can be in the communication network of connectionless network service (connectionless) and connection-oriented network service (connection-oriented), phone is provided and send and pass information service (bearerservices), and support point-to-point (Point-to-Point simultaneously, P2P) with point-to-multipoint (Point-to-Multipoint, communication P2MP).In some UMTS communication system, its air interface cut-in method is with Universal Terrestrial Radio Access Network network (Universal Terrestrial Radio AccessNetworks, UTRAN) or evolved Universal Terrestrial Radio Access Network network (Evolved UniversalTerrestrial Radio Access Networks, E-UTRAN) be the basis.
Fig. 1 a is a kind of UMTS communication system block schematic diagram.With reference to figure 1a, the UMTS communication system comprises core network (Core Network, CN) 110, one or more radio network controller (RadioNetwork Controllers, RNC) 120 (radio network controller 120a, 120b), one or more base station (Base Stations, BS) 130 (base station 130a-130e) and user's terminal equipment (UserEquipment, UE) 140 (user's terminal equipment 140a-140f).
Core network 110 can be that network or communication network are set the group that is used to provide communication service, and core network 110 can provide client data flow (user traffic), for example, and exchange, route and transmission.In addition, core network 110 also can have database maintenance and Network Management Function.Core network 110 with global system for mobile communications (Global System for Mobile Communications, GSM) network architecture is the basis, it can comprise any combination of wired/wireless connections core network 110.
Radio network controller 120 can be the communication equipment of setting in the UMTS communication system with any kind of operation, and it much is common equipment.It is responsible for the work such as resource management, mobile management, encryption of UMTS communication system radio network controller 120.In addition, radio network controller 120 also is responsible at least one base station 130 of control, and radio network controller 120 also can be connected (not shown) with core network 110 by one or more gateway device.
Each radio network controller 120 comprises one or more following element: and a central processing unit (central processing unit, CPU), its executable computer program instructs various programs and the method finished; Random access memory (random access memory, RAM) (read onlymemory ROM), is used for access and stored information and computer program instructions with read-only memory; One memory is used for storing data and information; Database is used for storing form, serial or other data structure; One input/output device, an interface and antenna etc., each element all is common known, therefore is not described further.
Base station 130 can be the communication equipment of any kind, is used for transmitting/receiving data in the UMTS communication system, can also communicate by letter with other user's terminal equipment 140.For example, in certain embodiments, base station 130 can be known as node-b (Node-B), base transceiver system (base transceiversystem, BTS) and access point (access point, AP) etc.Base station 130 and radio network controller 120 communicating by letter each other can be any combination of radio communication or wire communication.Broadcasting/the range of receiving of base station 130, cover base stations 130 is with wireless transmission method and one or more user's terminal equipment 140 communication ranges.Its broadcasting area is according to power levels, place, change with the factors such as (physics and electric waves) of interference.
Shown in Fig. 1 b, each base station 130 comprises one or more following elements: at least one central processing unit (CPU) 131, and it is used for computer program and instructs various programs and the method finished; Random-access memory (ram) 132 and read-only memory (ROM) 133 are used for access and stored information and computer program instructions; One memory 134 is used for storing data and information; Database 135 is used for storing form, serial or other data structure; Input/output device 136, interface 137 and antenna 138 etc., above-mentioned each element all is common known, therefore is not described further.
User's terminal equipment 140 can be the arithmetic facility of any kind, and it is used for doing in the UMTS communication system and between the base station 130 wireless transmission/the reception of data.For example, user's terminal equipment 140 can be server (servers), client (clients), main frame (mainframes), desktop computer (desktopcomputers), notebook computer (laptop computers), network computer (network computers), work station, personal digital assistant (Personal Digital Assistant, PDA), flat computer (tabletPCs), scanner, telephone plant, calling set (pagers), camera (cameras), and musical instruments etc., representative user's terminal equipment 140 is mobile arithmetic facility (mobile computing device).Shown in Fig. 1 c, each user's terminal equipment 140 comprises one or more following elements: at least one central processing unit (CPU) 141, and it is used for computer program and instructs various programs and the method finished; Random-access memory (ram) 142 and read-only memory (ROM) 143 are used for access and stored information and computer program instructions; One memory 144 is used for storing data and information; Database 145 is used for storing form, serial or other data structure; Input/output device 146, interface 147 and antenna 148 etc., each element all is common known, therefore is not described further.Communicating by letter between core network 110, radio network controller 120, base station 130 and the user's terminal equipment 140 can be logic online (logical connections), and online can being considered as of this logic is interface.With reference to figure 1a, the online Iu interface that can be considered of the logic between core network 110 and the radio network controller 120; Logic between the radio network controller 120 is online to be the Iur interface; Logic between radio network controller 120 and the base station 130 is online to be Iub interface; Logic between base station 130 and the user's terminal equipment 140 is online to be the Uu interface.Wherein, Iu, Iur and Iub interface can use synchronous transfer module (Asynchronous TransferMode ATM) realizes, the Uu interface can use W-CDMA to realize.
Fig. 2 is a schematic diagram of the Radio interface protocols storehouse of W-CDMA.With reference to figure 2, this W-CDMA agreement comprises three layers, and ground floor is physics (PHY) layer; The second layer is a data link layer, it also comprises four sublayers: medium access control (Medium Access Control, MAC), Radio Link control (Radio Link Control, RLC), broadcasting and multicast control (Broadcast and MulticastControl, BMC) (be not shown in the icon) and packet data convergence protocol (Packet DataConvergence Protocol, PDCP) (not shown); The 3rd layer is network layer, it comprise Radio Resource control (Radio Resource Control, RRC).
Physical layer can provide the information translation service, it is transformed into high one deck/sublayer (sub-layer) by uploading with the transmission channel that passes down, physical layer can also be made error detection (errordetection) in transmission channel, with support to mix the request that transmits automatically (Hybrid Automatic Repeat Requests, HARQ), the modulation (modulation) of carrying out physical layer and demodulation (demodulation) and mapping etc. that physical layer is provided.
Media access control sublayer can be provided at the data transaction (for example, control channel and transmission channel) of logic channel, and can do mapping between the logic channel of the transmission channel of PHY layer and RLC sublayer.In addition, media access control sublayer also can provide the mixing of data to transmit automatically (for example, HARQ).Media access control sublayer can further be divided into MAC-d and MAC-hs sublayer.
The RLC sublayer provide transfer data to more the upper strata (for example, RRC) use, for example, Service Access Point (Service Access Point, SAPs) 210.The RLC sublayer also can support to pass on submit more the Packet Data Unit on upper strata (Packet Data Units, PDUs), the termination environment (Terminal Block, TB), piecemeal and heavy piecemeal etc.In addition, the RLC sublayer in logic channel, provide data cryptogram with automatically transmit request (Automatic Repeat Requests, ARQ).
Radio-resource-configuration then is responsible in the RRC sublayer, and the RRC sublayer also can provide the signal of chain of command and user's face in the UMTS network.RRC can send data and control signal in all sublayers of the second layer, for example, and Service Access Point (SAPs) 210.
Fig. 3 is that (High-Speed Downlink Shared Channel, data compression HS-DSCH) is with a schematic diagram of transmission at high speed descending sharing channel.The following line mode of data is transmitted, and it is that conveyer by rlc layer is with ARQ protocol Data Unit (ARQ protocol data units, ARQPDUs) mode.ARQ PDUs is the ARQ mechanism coding that PDUs sees through rlc layer.Concerning other data, each ARQ PDU comprises that (Sequence Number, SN), this sequence number is used as the transmission order of one or more APQ PDUs of identification to a sequence number.
The MAC-d sublayer receives one or more APQ PDUs from the MAC-hs sublayer, in certain embodiments, the CT district is inserted in the MAC-d sublayer in each APQ PDU, when a plurality of logic channels were placed among the same MAC-d, this CT district was used for identification and the related logic channel of ARQ PDU.
The MAC-hs sublayer is used for receiving one or more APQ PDUs, in conjunction with this APQ PDUs to form MAC-hs PDUs.Successively, each MAC-hs PDUs utilizes HARQ mechanism to be coded as HARQ PDU.HARQ PDU can be sent to a receiving equipment, for example, and user's terminal equipment 140.With high speed descending sharing channel (High-Speed Downlink Shared Channel, HS-DSCH), its can correspond to a high-speed physical downlink shared channel (HS-PDSCH) (High-Speed PhysicalDownlink Shared Channel, HS-PDSCH).Among some embodiment, HS-PDSCH can be shared by a plurality of receivers.
Side by side transmit data at HS-PDSCH, control information to each HARQ PDU transmission, it is with High-Speed Shared Control Channel (High-Speed Shared Control Channel, HS-SCCH) be transmitted, this control information comprises: and (1) one HARQ program identification code (HARQ process ID, HID); (2) one new data indicator (New Data Indicator, NDI); And the data identification of (3) user's terminal equipment 140, its control information and related data transmit can be known.
Among some embodiment, HID comprises three positions, and points out the HARQ PDU related specific HARQ program given with, because each HARQ PDU and specific HARQ program are relevant, therefore at any time, rises to 8 HARQ PDU transmission activities.
NDI can be used as the transmission of pointing out the new HARQ PDU relevant with the specific HARQ program, and NDI can be single position, and its value can be " 0 " or " 1 ".Conveyer sees through the transmission that the NDI value is come identification one new HARQ PDU, and it comes in addition identification by reading NDI value (" 0 " or " 1 ") after successfully transmitting HARQ PDU.In the receiving equipment, receiver judges whether its NDI value is switched (toggle) mistake, HARQ RX removes the grouped data that is stored in advance in the soft buffering area, in other words, receiver judges whether the NDI value was switched, and HARQ then compares grouped data that has received and the grouped data that is stored in soft buffering area in advance.Therefore, for example, the interior NDI value and the prior NDI value that is stored in the HARQPDU in the soft buffering area that receives of PDU that receiver receives a HARQ PDU and relatively receives, if the NDI value of the grouped data that receives at present is different with the NDI value of the grouped data that receives in advance, receiver can judge that this grouped data is a new grouped data and removes soft buffering area.On the contrary, if the NDI value of receiving block data is identical with the NDI value of the grouped data that receives in advance, receiver can judge that this grouped data is heavily to send the grouped data that has before received, and receiving block data and receive and be stored in the grouped data of soft buffering area in advance more.
When a receiving system receiving block data (new or heavily send), according to the exclusive working control channel of high speed (High-Speed Dedicated Physical Control Channel, HS-DPCCH), receiving system can produce and transmit an ACK or nack message to conveyer.Receiver transmits ACK information and represents that to conveyer receiver correctly receives the transmission data; Receiver transmits nack message, and then to represent to be that a grouped data that had received or have is divided into groups to conveyer wrong.
Fig. 4 is an embodiment schematic diagram of the signal of operation A RQ and HARQ mechanism.As shown in Figure 4, a transmission equipment, for example the base station 130, can comprise ARQ transmission (ARQ Tx) mechanism and HARQ transmission (HARQ Tx) mechanism.Similarly, a receiving equipment, for example user's terminal equipment 140, can comprise an ARQ and receive (ARQ Rx) mechanism and HARQ reception (HARQ Rx) mechanism.This ARQTX, HARQ TX, ARQ RX can be any software with HARQ RX and carry out the function that this embodiment is associated with the combination of hardware element to realize this transmission equipment and receiving equipment.As previously mentioned, ARQTX and ARQ RX can lay respectively at the RLC sublayer of this transmission equipment and receiving equipment.Similarly, HARQ TX and HARQ RX can lay respectively at the media access control sublayer of this transmission equipment and receiving equipment.
ARQ TX and ARQ RX can be error return (error recovery) mechanism.This error return mechanism can be set in when not receiving grouped data or transmit this grouped data during the grouped data mistake of being received once more.ARQ TX and ARQ RX can use the combination in any of ACK, NACK and time end of a period (timeout) etc.The ARQ agreement of embodiment can comprise stop and waiting (Stop-And-Wait, SAW), recall N information (Go-Back-N) and selectivity and retransmit (Selective Repeat).
HARQ TX and HARQ RX also can be the variation of error return mechanism or ARQ TX and ARQ RX.HARQ TX and HARQ RX can be responsible for the encoding and decoding of transmitting grouped data, provide transmitting grouped data behind the coding to the PHY layer, and provide decoded transmitting grouped data to upper strata more.In one embodiment, HARQ TX can carry out the coding of grouped data before transmission.Grouped data behind received code, HARQ RX decodable code grouped data.Yet, make a mistake when detecting grouped data, be temporary in the soft buffering area (soft buffer) with the grouped data that has received of HARQ RX, HARQ RX also can require to transmit again.With as described in Fig. 3, HARQ TX and HARQ RX can comprise several HARQ programs as preceding.In one embodiment, each HARQ program can be the example of a SAW agreement, can be used for control data transmission/transmission again.
In one embodiment, when HARQ TX before expiration if do not receive the ACK signal, HARQTX can transmit this grouped data again, the number of times of finishing transmission or again transmission correct up to grouped data surpasses a pre-determined number.Same, when HARQ TX receives the NACK signal, HARQ TX can transmit this grouped data again, and the number of times of finishing transmission or again transmission correct up to grouped data surpasses a pre-determined number.
With reference to figure 4, ARQ TX can provide ARQ PDU nTo HARQ TX.ARQ PDU nCan comprise a sequence number (SN).This sequence number can be used for promoting that the correct biography of PDU is received between transmitter and the receiver.For example, in transmitter, this SN can be used for guaranteeing that all PDU are docile and obedient the preface transmission.And in receiver, this SN can be used for judging that whether having PDU to pass loses.If the SN that is received has problem, for example, SN is not according to order, or the SN that has disappears, and then the receiver decidable has the PDU biography to lose.
HARQ TX is to ARQ PDU nEncode, to produce HARQ PDU nHARQ TX can specify a NDI value to HARQ PDU n, and pass HARQ PDU in regular turn nGive a receiver.Further, HARQ TX can store a HARQ PDU that has transmitted in a retransmission buffer (retransmission buffer) nRetransmission buffer can be positioned at media access control sublayer.
At receiver end, a corresponding HARQ RX can receive HARQ PDU n, and the HARQ PDU to receiving nDecode.As shown in Figure 4, HARQ RX is if successfully decode HARQ PDU n, then with decoded ARQ PDU nReach ARQ RX.HARQ RX can transmit ack signal simultaneously to HARQ TX, represents that this grouped data successfully receives.Then, HARQ RX can abandon this grouping.
HARQ TX can remove HARQ PDU from retransmission buffer N+1With the response ack signal.In addition, when receiving HARQ PDU from ARQ TX N+1, HARQ TX then switches the NDI value, and transmits HARQ PDU N+1In receiver, HARQ Tx then stores a HARQ PDU that has transmitted N+1Backup in retransmission buffer.
At receiver end, a corresponding HARQ RX can receive HARQ PDU N+1, and the HARQ PDU to receiving N+1Decode.Yet in this example, HARQ RX is if detect HARQ PDU N+1Wrong generation, then HARQ RX can transmit the NACK signal to HARQ TX.Then, HARQ TX can transmit the HARQ PDU that is stored in the retransmission buffer again N+1To receiver with response NACK signal.HARQ TX can be again and again transmitting HARQ PDU again N+1Transmit ack signal to HARQ TX up to HARQ RX to receiver, represent that this grouped data successfully receives, or the number of times of transmission again is above a pre-determined number.
If reached the pre-determined number of transmission again, HARQ Tx then removes H HARQPDU from retransmission buffer N+1In addition, HARQTx switches HARQ PDU N+2The NDI value, after receiving from ARQ Tx again with HARQ PDU N+2Transfer to receiver.HARQ TX can store a HARQ PDU that has transmitted in retransmission buffer N+2To cover original HARQ PDU N+1
At receiver end, HARQ RX can receive HARQ PDU N+2, and the HARQPDU to receiving successfully N+2Decode.Then, HARQ RX can transmit ack signal to HARQ TX, and with decoded ARQ PDU N+2Reach ARQ RX.Because ARQ RX can check SN, ARQ RX may judge ARQ PDU N+1Biography is lost.In the case, ARQ RX can initiatively transmit one again transmission requirement impel ARQ TX to transmit ARQ PDU again to ARQ TX N+1
As previously mentioned, when not receiving that grouping or grouping make a mistake, HARQ and ARQ mechanism can be used to reply this grouped data.Use HARQ and ARQ mechanism that two-layer protection can be provided simultaneously, to prevent packet loss.In other words, because ARQ mechanism operates at rlc layer, and HARQ mechanism operates at the MAC layer, and therefore, grouped data can be replied or correct to RLC and MAC layer all.
Yet because ARQ mechanism is positioned at higher level, therefore transmission needs to use more resource again, and speed is also comparatively slow.What is more, and the possibility of transmission again of rlc layer can't transmitting real-time data because postpone excessive.
Summary of the invention
In one embodiment, the invention discloses a kind of error-detecting method of wireless communication system, comprise by a transmitting device and transmit data to a receiving system; Receive a true breath of collecting mail of receiving system since then, wherein really these data are given in the response of collection of letters breath; Receive an error indicator of receiving system since then, this error indicator interrelates with these data that are sent to this receiving system; And, determine a type of error based on true breath and this error indicator of collecting mail of at least one pen.
In another embodiment, the invention discloses a kind of error-detecting method of wireless communication system, comprise by a transmitting device and transmit data to a receiving system; Receive a true collection of letters breath of receiving system since then, wherein this really collects mail to cease to respond and gives these data; Receive an error indicator of receiving system since then, this error indicator interrelates with these data that are sent to this receiving system; And, determine a type of error based on true breath and this error indicator of collecting mail of at least one pen, wherein this error indicator comprises an at least one new data indicator and an expectation data value.
In another embodiment, the invention discloses a kind of error-detecting method of wireless communication system, comprise the data of reception from a transmitting device, wherein these data comprise a new data indicator, transmit true a collection of letters and cease transmitting device so far, wherein this breath of really collecting mail responds and gives these data; Whether exist at least one mistake and this data to interrelate by receiving system decision; And when this at least one erroneous decision, transmit an error indicator to this transmitting device, wherein this error indicator comprises an at least one new data indicator and an expectation data value.
In another embodiment, the invention discloses a kind of radio stations of radio communication, this radio stations comprises at least one memory, storage data and instruction; And at least one processor, when carrying out this instruction, this processor is configured to this memory of access and is configured to carry out following action: will transmit data and deliver to a receiving system; Receive a true breath of collecting mail of receiving system since then, wherein this really collects mail and ceases response to these transmission data; Receive an error indicator of receiving system since then, wherein this error indicator is transmitted data therewith and is interrelated; And, determine a type of error based on true breath and this error indicator of collecting mail of at least one pen.
In another embodiment, the invention discloses a kind of radio stations of radio communication, this radio stations comprises at least one memory, storage data and instruction; And at least one processor, when carrying out this instruction, this processor is configured to this memory of access and is configured to carry out following action: will transmit data and deliver to a receiving system; Receive a true breath of collecting mail of receiving system since then, wherein this really collects mail and ceases response to these transmission data; Receive an error indicator of receiving system since then, wherein this error indicator is transmitted data therewith and is interrelated; And, determine a type of error based on true breath and this error indicator of collecting mail of at least one pen, wherein this error indicator comprises an at least one new data indicator and an expectation data value.
In another embodiment, the invention discloses a kind of radio communication device of radio communication, this radio communication device comprises at least one memory, storage data and instruction; And at least one processor, when carrying out this instruction, this processor is configured to this memory of access and is configured to carry out following action: receive the transmission data from a transmitting device, wherein this transmits data packets is drawn together a new data indicator; Transmit true a collection of letters and cease transmitting device so far, wherein this breath of really collecting mail is that response is to these transmission data; Whether decision exists at least one mistake to transmit data therewith; And when this at least one wrong quilt determines, transmit error indicator transmitting device so far, wherein this error indicator comprises an at least one new data indicator and an expectation data value.
Description of drawings
Fig. 1 a is an a kind of embodiment schematic diagram of UMTS communication system.
Fig. 1 b is the embodiment schematic diagram of a kind of BS.
Fig. 1 c is the embodiment schematic diagram of a kind of UE.
Fig. 2 illustrates an a kind of embodiment schematic diagram of W-CDMA layer.
Fig. 3 illustrates an embodiment schematic diagram of the W-CDMA layer of a kind of PDUs of processing.
Fig. 4 is in the UMTS communication system, an embodiment schematic diagram of the signal of packet data streams.
Fig. 5 a is a flow process schematic diagram, and an embodiment of packet data streams is described, and consistent with some embodiment among the present invention.
Fig. 5 b is a flow process schematic diagram, and an embodiment of packet data streams is described, and consistent with some embodiment among the present invention.
Fig. 6 a is an embodiment schematic diagram of the signal of NDI switching, and consistent with some embodiment among the present invention.
Fig. 6 b is an embodiment schematic diagram of the signal of a type 4 fault processing, and consistent with some embodiment among the present invention.
Fig. 6 c is an embodiment schematic diagram of the signal of a type 4 fault processing, and consistent with some embodiment among the present invention.
Fig. 7 a is an embodiment schematic diagram of the signal of a type 2 fault processing, and consistent with some embodiment among the present invention.
Fig. 7 b is an embodiment schematic diagram of the signal of a type 2 fault processing, and consistent with some embodiment among the present invention.
Fig. 8 a is an embodiment schematic diagram of the signal of a type 6 fault processing, and consistent with some embodiment among the present invention.
Fig. 8 b is an embodiment schematic diagram of the signal of a type 6 fault processing, and consistent with some EXAMPLE Example among the present invention.
Fig. 9 a is an embodiment schematic diagram of the signal of a type 7 fault processing, and consistent with some embodiment among the present invention.
Fig. 9 b is an embodiment schematic diagram of the signal of a type 7 fault processing, and consistent with some embodiment among the present invention.
Figure 10 a is an embodiment schematic diagram of the signal of a type 3 fault processing, and consistent with some embodiment among the present invention.
Figure 10 b is an embodiment schematic diagram of the signal of a type 3 fault processing, and consistent with some embodiment among the present invention.
Figure 11 is a flow process schematic diagram, and the embodiment of the erroneous decision of type 2, type 4 and type 6 is described, and consistent with some embodiment among the present invention.
Figure 12 is a flow process schematic diagram, and the embodiment of the erroneous decision of type 2, type 3, type 4, type 6 and type 7 is described, and consistent with some embodiment among the present invention.
Embodiment
In a communication system of utilizing HSDPA, can there be seven kinds of different type of errors to be embedded in the channel of HS-PDSCH, HS-SCCH and HS-DPCCH (channel) lining.For the sake of clarity, in this paper, these type of errors are referred to as with numerical value (numerical value).HS-PDSCH can comprise a kind of Class1 mistake and one type of 2 mistake, the Class1 mistake be exactly Cyclic Redundancy Check (CycleRedundancy Check, CRC) in not deleted mistake, type 2 is wrong to be exactly mistakes when reaching the maximum times of transmission.Three types of mistakes may occur in HS-SCCH, just type 3 mistakes (being DTX → ACK mistake), type 4 mistakes (being the NDI faulty interpretation) and type 5 mistakes (being among the HARQ, other control information faulty interpretation).Two types of mistakes may occur in HS-DPCCH, just type 6 mistakes (being NACK → ACK mistake) and type 7 mistakes (being ACK → NACK mistake).
(Protocol Data Unit is in the time of PDU) can not being detected by CRC, with regard to possibility occurrence type 1 mistake when a protocol Data Unit of having damaged.The protocol Data Unit that can't operate owing to this type 1 mistake only can only be restored by re-transmission when ARQ.Therefore the non-emphasis of the present invention of Class1 mistake, is not described further.
When the ARQ (Hybrid ARQ) that retransmit to mix reaches maximum times, and HARQ Tx is not when receiving any ACK, just may occurrence type 2 mistakes.Restore the protocol Data Unit of having damaged by ARQ, the retransmission protocol data cell is necessary.
When HARQ Rx sends a DTX information, this DTX information is pointed out the control information mistake at the detected 16-position CRC who is checked through of HARQ Rx, but HARQ Tx is this DTX is improper when being interpreted as an ACK, just may occurrence type 3 mistakes.Because this type 3 mistakes are restored the protocol Data Unit of having damaged by ARQ, the retransmission protocol data cell is necessary.
The NDI value that receives as HARQ Rx just may occurrence type 4 mistakes during by faulty interpretation.When having produced type 4 mistakes, the soft buffering area of preexist HARQ Rx (soft buffer) may be gone out (flushed) clearly and lose by HARQ Rx.
As the data of a non-NDI value during, and make the protocol Data Unit damage by the faulty interpretation control information, just may occurrence type 5 mistakes.For example, channel code set (Channelization Code Set), modulation basic mode (Modulation Scheme), transport block size (Transport Block Size), HARQ program identification code (HARQ Process Identifier), the redundant and version of trooping (Redundancy and Constellation Version) etc. are arranged with type 5 is wrong associated.Therefore type 5 wrong non-emphasis of the present invention, are not described further.
When a NACK who sends as HARQ Rx is translated into an ACK by HARQ Tx false solution, just may occurrence type 6 mistakes.The result of occurrence type 6 mistakes can be that HARQ Tx goes out retransmission buffer (retransmission buffer) clearly and transmits a new HARQ protocol Data Unit again.See through ARQ and restore the protocol Data Unit of having damaged, the retransmission protocol data cell may be necessary.
At last, when an ACK is translated into a NACK by false solution, just may occurrence type 7 mistakes.When type 7 mistakes had taken place, HARQ Tx may retransmit this HARQ protocol Data Unit, impels HARQ Rx to receive this HARQ protocol Data Unit redundantly.This redundancy ground retransmits and duplicates the grouping with type 7 mistakes, and the possibility of result can reduce the treatment efficiency of HARQ.The damage of protocol Data Unit can not take place, and ARQ Tx need not retransmit this protocol Data Unit.
Whether above-mentioned seven types of mistakes can damage take place and be divided into two classes according to protocol Data Unit, and a class is residual (residual) HARQ mistake, and another kind of is non-residual (non-residual) HARQ mistake.Residual HARQ mistake takes place, and corresponds to Class1, type 2, type 3 and type 6, may cause the grouping damage, and may trigger the ARQ re-transmission, to restore the protocol Data Unit of having damaged.Non-residual HARQ mistake takes place, and corresponds to type 4 and type 7, may cause reducing usefulness, but may not can cause the damage of protocol Data Unit.In certain embodiments, non-residual HARQ mistake may not need ARQ to retransmit.
Because be not that institute retransmits wrong all a needs, so, do not need those mistakes of retransmitting by detecting, might further reduce the number of times that retransmits.Do not need those mistakes of retransmitting by detecting, and those wrong just permissions by the re-transmission of ARQ mechanism that only needs retransmitted, system effectiveness can further improve.
Fig. 5 a and Fig. 5 b are a flow process schematic diagram 500a, 500b, and an embodiment of the packet data processes between HARQ Tx and the HARQ Rx is described, and consistent with some EXAMPLE Example among the present invention.The embodiment of the packet data processes of Fig. 5 a and Fig. 5 b can be implemented in the UMTS communication system, as Fig. 1 a person of touching upon.In the method embodiment shown in Fig. 5 a and Fig. 5 b, once detect with a HARQ protocol Data Unit of receiving interrelate wrong the time, HARQ Rx can produce and send an error message and give HARQ Tx.
At transmitting and receiving, HARQ Tx and HARQ Rx use a kind of incremental redundancy (Incremental Redundancy) technology.The transmission of the HARQ PDU that each is new, (Redundancy Version 0, RV0), the RV0 that transmits the HARQ protocol Data Unit then is to HARQ Rx for the redundancy versions of the generation HARQ of HARQ Tx elder generation protocol Data Unit.Retransmit the HARQ protocol Data Unit each time, HARQ Tx produces one of HARQ protocol Data Unit continue (subsequent) redundancy versions (Redundancy Version, RV) (for example, RV1, RV2 etc.), and transmit this RVs that continues to HARQRx.Therefore, in retransmitting each time, HARQ Tx transmits the different version of HARQ protocol Data Unit, each RV has two features: (1) is restored by HARQ Rx and is obtained original HARQ protocol Data Unit, and (2) with different editions and the same HARQ protocol Data Unit combination of content, and the RVs ability that can increase combination is restored and obtained raw information.
With reference to figure 5a and Fig. 5 b, HARQ Tx can be from storage working area (storage buffer) acquisition one an ARQ protocol Data Unit and a coding, produce a HARQ protocol Data Unit (ginseng step 502), because transmission again, HARQ Tx can produce the RV0 version of HARQ protocol Data Unit.Moreover HARQ Tx can assign (assign) NDI to give the HARQ protocol Data Unit.This NDI can be used to distinguish the HARQ protocol Data Unit of new transmission (newly transmitted) and the HARQ protocol Data Unit of re-transmission.For example, as mentioned above, this NDI value can transmit (sequential transmission) to the sequence of new HARQ protocol Data Unit, and (toggle) switched in the intercropping 0 and 1, and to the re-transmission that continues of identical HARQ protocol Data Unit, this NDI value can remain unchanged.
HARQ Tx row order (in sequential order) in regular turn transmits the HARQ protocol Data Unit of having encoded to HARQ Rx (ginseng step 504).If a new transmission (ginseng step 506 is), HARQTx can store the retransmission buffer (retransmission buffer) (ginseng step 508) that the backup of a HARQ protocol Data Unit that has transmitted interrelates in this HARQ Tx.
When HARQ Tx transmits (or retransmit) HARQ protocol Data Unit, then HARQ Tx then waits for from the response of HARQ Tx.If HARQ Tx receives an ACK (ginseng step 510 is), HARQTx then removes retransmission buffer (ginseng step 512), and gets back to step 502.
If HARQ Tx does not receive ACK (ginseng step 510, not), when expiration, confiscate a NACK or not response, whether HARQ Tx reaches the maximum number of times (ginseng step 514) that transmits, if reach maximum number of retransmissions, HARQ Tx then removes retransmission buffer (ginseng step 512), and gets back to step 502.
If do not reach maximum number of retransmissions (ginseng step 514, not), HARQ Tx receives the HARQ protocol Data Unit from the retransmission buffer reclosing, calculate new RV, and retransmit the HARQ protocol Data Unit, and continue this flow process up to receiving an ACK from HARQ Tx or reaching maximum retransmission to HARQ Rx.
Embodiment with reference to figure 5a and Fig. 5 b, HARQ Rx can receive the HARQ protocol Data Unit (ginseng step 550) that transmits from HARQ Tx, and check that the NDI value equates? (ginseng step 552), judge that the NDI value of HARQ protocol Data Unit equals the NDI value of the previous HARQ protocol Data Unit that receives (ginseng step 552, be), the HARQ protocol Data Unit that then HARQ Rx combination grouped data that has received and the grouped data that before was stored in soft buffering area (ginseng step 554), and assessment received judges whether to detect crc error (ginseng step 556).
If detect crc error (ginseng step 556 is), HARQ Rx transmits NACK to a HARQ Tx (ginseng step 558), and the associated NDI value of HATRQ PDU of storing and having received (ginseng step 560) in soft buffering area.If HARQ Rx successfully receives the HARQ protocol Data Unit and transmits an ACK to HARQ Tx, then remove the HARQPDUs that receives that is stored in the soft buffering area.
Moreover HARQ Rx can assess other mistake (ginseng step 572) of this HARQ protocol Data Unit of receiving.In certain embodiments, this other mistake can comprise one or more, for example, and Class1 mistake, type 2 mistakes, type 3 mistakes, type 4 mistakes, type 5 mistakes, type 6 mistakes and type 7 mistakes, etc.(ginseng step 572, not), HARQRx continues to handle (ginseng step 574) if HARQ Rx decision does not also have wrong the generation.
Yet if HARQ Rx decision existing one wrong generation the (ginseng step 572 is), HARQ Rx can send an error indicator to HARQ Tx (ginseng step 576).This error indicator can be to pass to the information of HARQ Tx from HARQ Rx, is used to refer to HARQ Rx and has detected a non-expectation reception.This error indicator can comprise the arbitrary value or the combination of value.In certain embodiments, this error indicator can comprise a single error indicator value (single error indicator value), for example, and one " 0 " or one " 1 ".In other embodiments, this error indicator can comprise a plurality of values.In one embodiment, this error indicator can comprise " a NDI e" value and one " S " value.This " NDI e" value can equal the NDI value of the HARQ protocol Data Unit (last HARQ PDU received byHARQ Rx) that HARQ Rx receives recently.This " S " value can provide a designator, points out the type of the value of the data type that received by HARQ Rx and HARQ Rx expectation, both associations.That is, when HARQ Rx receives, can point out that by " S " value HARQ Rx has received the grouped data of non-expectation (unexpectedpacket data).For example, if HARQ Rx receives the HARQ protocol Data Unit transmission of a re-transmission, rather than receive the new transmission of an expectation, this " S " value can equal 0.If HARQ Rx receives a new HARQ protocol Data Unit transmission, rather than receive the re-transmission of an expectation, this " S " value can equal 1.According to the ACK and the NACK data of previous transmission, and the NDI data of before having received, HARQ Rx can determine and set this " S " value.
For example, if HARQ Rx receives a HARQ PDU n, and send a NACK and give HARQTx, HARQ Rx can expect a HARQ PDU nRetransmit.Yet, if next HARQPDU (that is the HARQ PDU that receives N+1) have one with the HARQ PDU that had before received (that is HARQ PDU n) different NDI values, then HARQ Rx can detect a mistake, can expect a HARQ PDU because the NDI value of switching can be pointed out new data and HARQ Rx nRetransmit.So HARQ Rx can set this " S " value and equal 1.
As another embodiment, if HARQ Rx receives a HARQ PDU n, and send an ACK and give HARQ Tx, HARQ Rx can expect a new transmission, that is HARQ PDU N+1If when responding this ACK, if HARQ Tx sends HARQ PDU N+1But HARQ PDU N+1The NDI value be not switched HARQ PDU just N+1NDI value and HARQ PDU nThe NDI value identical, then HARQ Rx can think that it is receiving a HARQ PDU nRe-transmission, but not new data.So HARQ Rx can detect a mistake and set this " S " value and equal 1.
Fig. 6 a is an embodiment schematic diagram of the signal of NDI switching, and consistent with some embodiment among the present invention.As discussed above, the NDI value can be switched between 0 and 1, points out when a HARQ PDU is a new transmission.
For example, shown in Fig. 6 a, ARQ Tx can handle and send ARQ PDU nGive HARQ Tx.HARQ Tx codified ARQ PDU n, and produce HARQ PDU nHARQ Tx can set HARQPDU nA NDI value, row transmit HARQ PDU in proper order in regular turn then nTo a receiver.In this example, HARQ PDU nThe NDI value can equal 1.HARQ Tx can be with the HARQ PDU that has transmitted nBe stored in a retransmission buffer, replace any previous HARQ PDU that is stored in this retransmission buffer.
At receiver end, a corresponding HARQ Rx mechanism can receive HARQ PDU nAnd check its NDI value.Shown in Fig. 6 a, HARQ Rx can determine the HARQ PDU that receives nThe NDI value equal 0.If the HARQ PDU that had before received is stored in a memory or the buffering area of HARQ Rx, then HARQ Rx can compare HARQ PDU nThe NDI value of the HARQPDU that before received of NDI value and.If HARQ Rx does not run into mistake, then HARQ Rx can send decoded HARQ PDU n(that is ARQ PDU n) to ARQ Rx.HARQ Rx can send an ACK information synchronously to HARQ Tx, points out successfully to receive HARQ PDU n
Once receive this ACK information, HARQ Rx can remove retransmission buffer and prepare to transmit next ARQPDU (that is the HARQ PDU that has encoded N+1) to HARQ Rx.Because this is a new data transmission, HARQ Tx can be with HARQ PDU N+1The NDI value switch to 1 from 0.HARQ Tx can send HARQ PDU N+1To HARQ Rx, and storage HARQ PDU N+1In a retransmission buffer, replace HARQ PDU n
At receiver end, HARQ Rx can receive HARQ PDU N+1And inspection NDI value.Shown in Fig. 6 a, HARQ Rx can determine the HARQ PDU that receives N+1The NDI value equal 1.Yet HARQRx can detect the PDU with HARQ N+1A mistake that interrelates, and transmit a nack message to HARQ Tx, point out successfully not receive HARQ PDU N+1In one embodiment, HARQ Rx can store receive in HARQ PDU N+1In the soft buffering area.Moreover HARQ Rx can store dividually with HARQ PDU N+1The NDI value that interrelates.
Once receive this nack message, HARQ Rx can retransmit buffering area certainly and get HARQ PDU N+1, and heavily send HARQ PDU N+1To HARQ Rx.Retransmit because this is data, HARQ Rx can not switch the NDI value.So, transmit HARQ PDU for the second time N+1NDI value and later retransmission HARQ PDU N+1The NDI value can with original transmission HARQ PDU N+1The NDI value identical.
At receiver end, HARQ Rx can receive HARQ PDU N+1And inspection NDI value.Shown in Fig. 6 a, HARQ Rx can determine the HARQ PDU that receives N+1The NDI value equal 1.Because HARQRx is just expecting a re-transmission, HARQ Rx can confirm that the NDI value of NDI value that retransmits and the transmission of before having received is identical.In one embodiment, HARQ Rx can compare the present up-to-date NDI value of receiving and be stored in the NDI value of the HARQ PDU that had before received of the soft buffering area of HARQ Rx.In this example, HARQPDU N+1The NDI value equal 1, one value that is equal to the NDI value of stored HARQ PDU once again.So HARQ Rx can send an ACK information to HARQ Tx, and transmits decoded HARQPDU N+1(that is ARQ PDU N+1) to ARQ Rx.Moreover HARQ Rx can remove the soft buffering area of HARQ Rx.
Once receive this ACK information, HARQ Rx can remove retransmission buffer and prepare to transmit next ARQ PDU (that is the HARQ PDU that has encoded N+2) to HARQ Rx.Because this is a new data transmission, HARQ Tx can be with HARQ PDU N+2The NDI value switch to 1 from 0.HARQ Tx can send HARQ PDU N+2To HARQ Rx, and storage HARQ PDU N+2In a retransmission buffer, replace HARQ PDU N+1
At receiver end, HARQ Rx can receive HARQ PDU N+2And inspection NDI value.Shown in Fig. 6 a, HARQ Rx can determine the HARQ PDU that receives N+2The NDI value equal 0.HARQ Rx can confirm that the NDI value that transmits at present is inequality with the NDI value of the transmission of before having received.For example, HARQRx can compare HARQ PDU N+2NDI value and HARQ PDU N+1The NDI value.
If HARQ Rx does not run into mistake, then HARQ Rx sends an ACK information to HARQTx, and transmits decoded HARQ PDU N+2(that is ARQ PDU N+2) to ARQ Rx.If wrong in the HARQ PDU that had before received, HARQ Rx can remove soft buffering area up to successfully receiving HARQ PDU N+2This process can continue, up to not having data till transmitting between transmitter and the receiver.
Fig. 6 b and Fig. 6 c are the embodiment schematic diagrames of the signal of type 4 fault processing, and consistent with some embodiment among the present invention.As previously mentioned, the NDI value that receives as HARQ Rx is unequal when the desired value of HARQRx, just may occurrence type 4 mistakes.The NDI value may be under two kinds of situations, and unequal in the desired value of HARQ Rx: (1) HARQ Rx is just expecting a re-transmission, but this NDI value was switched by HARQ Tx.Or (2) HARQ Rx is just expecting a new protocol Data Unit, but this NDI value was not also switched by HARQ Tx.The embodiment schematic diagram of the signal among Fig. 6 a, Fig. 6 b and Fig. 6 c can be implemented in the UMTS communication system, as Fig. 1 a person of touching upon.
For example, with reference to figure 6b, ARQ Tx can handle and send ARQ PDU N+1To the memory buffer.HARQ Tx memory buffer acquisition from then on ARQ PDU N+1And encode it, and produce HARQPDU again N+1HARQ Tx can assign a NDI value to HARQ PDU N+1Transmit HARQ PDU then N+1To HARQ Rx.Moreover HARQ Rx can store a HARQ PDU N+1Backup in a retransmission buffer, replace any HARQ protocol Data Unit that had before transmitted.
At receiver end, HARQ Rx can receive HARQ PDU N+1And inspection NDI value.Shown in Fig. 6 a, HARQ Rx can determine the HARQ PDU that receives N+1The NDI value equal 0.Yet HARQRx can detect the PDU with HARQ N+1A mistake that interrelates, and transmit a nack message to HARQ Tx, point out successfully not receive HARQ PDU N+1HARQ Rx can store the associated HARQ PDU with HARQRx N+1Portion back up in soft buffering area.Moreover HARQ Rx can store HARQ PDU dividually N+1The portion of NDI value back up a memory area that with HARQ Rx is mutually in.
Once receive this nack message, HARQ Rx can retransmit buffering area certainly and get HARQ PDU N+1, and heavily send HARQ PDU N+1To HARQ Rx.Retransmit because this is data, HARQ Rx can determine not switch the NDI value.So, transmit HARQ PDU for the second time N+1NDI value and later retransmission HARQ PDU N+1The NDI value can with original transmission HARQ PDU N+1The NDI value identical.
At receiver end, HARQ Rx can receive HARQ PDU N+1Re-transmission and the attempt HARQ PDU that goes to decode N+1Moreover HARQ Rx can check the NDI value.Shown in Fig. 6 b, yet HARQRx can determine the HARQ PDU that receives N+1The NDI value equal 1.HARQ Rx can be by comparing and the NDI value of before having received of having stored. confirm that the NDI value that retransmits is identical.In the present embodiment, the NDI value of this re-transmission equals 1, unequal and the HARQ PDU that before received N+1The NDI value.So HARQ Rx removes soft buffer, if HARQ Rx does not have mistake, then HARQ Rx can send an ACK information to HARQ Tx, points out successfully to receive HARQ PDU N+1, but also can send an error indicator, notice HARQ Tx has detected the mistake of a non-expectation.Moreover HARQ Rx can store HARQ PDU N+1In a memory area that interrelates with HARQ Rx.
With reference to figure 6c, utilize scenario as Fig. 6 b, HARQ Rx can send an error indicator and respond a detected mistake.Yet among this embodiment, this error indicator can comprise two values, the NDI that is touched upon as Fig. 5 a or Fig. 5 b eAnd S.In the present embodiment, because the data that HARQ Rx expectation one retransmits, but according to this NDI value, the decision that replaces is to have received new data, this S value can be 0.This NDI eValue can be configured to from the HARQ PDU of HARQ Rx reception N+1The NDI value.In the present embodiment, this NDI eValue can equal 1.
Fig. 7 a and Fig. 7 b are the embodiment schematic diagrames of the signal of type 2 fault processing, and consistent with some embodiment among the present invention.As previously mentioned, when a pre-determined number that retransmits reaches, and HARQ Tx is not when receiving a ACK from HARQ Rx, just may occurrence type 2 mistakes.When a type 2 mistakes take place, can require ARQ Tx heavily to send the protocol Data Unit of damage.The embodiment schematic diagram of the signal among Fig. 7 a and Fig. 7 b can be implemented in the UMTS communication system, as Fig. 1 a person of touching upon.
For example, with reference to figure 7a, ARQ Tx can handle and send ARQ PDU N+1To a memory buffer.HARQ Tx memory buffer acquisition from then on ARQ PDU nAnd encode it, and produce HARQPDU again nHARQ Tx can assign a NDI value to HARQ PDU nTransmit HARQ PDU then nTo receiver.In the present embodiment, HARQ Tx can set the NDI value and equal 0.Moreover HARQ Rx can store a HARQ PDU N+1Backup in a retransmission buffer, replace any HARQ protocol Data Unit that had before transmitted.
At receiver end, HARQ Rx can receive HARQ PDU N+1And check its NDI value.Shown in Fig. 7 a, HARQ Rx can determine the HARQ PDU that receives nThe NDI value equal 0.Yet HARQRx can detect the PDU with HARQ nA mistake that interrelates, and can transmit a nack message to HARQ Tx, point out successfully not receive these data.Moreover HARQ Rx can store HARQ PDU in a soft buffering area that interrelates with HARQ Rx, and also can separate storage HARQ PDU nThe portion backup of NDI value.
Once receive this nack message, HARQ Rx can retransmit buffering area certainly and get HARQ PDU n, and heavily send HARQ PDU nTo HARQ Rx.Retransmit because this is data, HARQ Rx can determine not switch the NDI value.So, transmit HARQ PDU for the second time nNDI value and later retransmission HARQ PDU nThe NDI value can with original transmission HARQ PDU nThe NDI value identical.In the present embodiment, the NDI value equals 0.
At receiver end, HARQ Rx can receive HARQ PDU nRe-transmission and attempt remove the HARQPDU that decodes nMoreover HARQ Rx can check the NDI value.HARQ Rx can determine the HARQ PDU that receives nThe NDI value equal 0.So, HARQ PDU that HARQ Rx can receive this and the HARQ PDU combination that before was stored in soft resilient coating.Yet HARQ Rx can detect with HARQ PDU again nA mistake that interrelates, and can transmit a nack message to HARQ Tx, point out successfully not receive these data.
But this scenario reprocessing is till the maximum times that is retransmitted by HARQ Tx reaches.At this moment, HARQ Tx can remove retransmission buffer, and sends NACK to the ARQ Tx an of this locality.For example, before removing retransmission buffer, the NACK that produces this locality and this local NACK were sent to ARQ Tx, HARQ Tx only was allowed to maximum three times attempts and retransmits (attemptedretransmission).
When reaching the maximum times of re-transmission, the next ARQ PDU of HARQ Tx codified, for example ARQ PDU N+1And set its NDI value.In the present embodiment, because this is a new data, the changeable NDI value of HARQ Tx, and setting NDI value equals 1.Then, HARQ Tx can transmit HARQ PDU N+1To HARQ Rx and store HARQ PDU N+1In a retransmission buffer.
At receiver end, HARQ Rx can receive HARQ PDU N+1Transmission and check its NDI value.Shown in Fig. 7 a, HARQ Rx can determine the HARQ PDU that receives nThe NDI value equal 1.The NDI value that HARQ Rx can transmit more at present with before received that transmission (was HARQ PDU n) the NDI value.In the present embodiment, the NDI value can equal 1, and this value is not equal to HARQ PDU nThe NDI value of having stored.So HARQ Rx can remove (clear) soft buffering area.
If HARQ Rx does not run into mistake, HARQ Tx can transmit an ACK information to HARQ Tx, points out to receive HARQ PDU N+1Yet, because HARQ Rx may expect HARQPDU one time always nRe-transmission, HARQ Rx also can send an error indicator, notice HARQ Tx has detected a mistake.Moreover HARQ Rx can store HARQ PDU nThe portion of NDI value back up a memory area that interrelates with HARQ Rx in.
With reference to figure 7b, utilize scenario as Fig. 7 a, HARQ Rx can send an error indicator and respond a detected mistake.Yet in the present embodiment, this error indicator can comprise two values, the NDI that is touched upon as Fig. 5 a or Fig. 5 b eAnd S.In the present embodiment, because HARQ Rx is just expecting data that retransmit, but according to this NDI value, the decision that replaces is to have received new data, and this S value can be 0.This NDI eValue can be configured to the HARQ PDU that sends from HARQ Tx N+1The NDI value.So, in the present embodiment, this NDI eValue can equal 1.
Fig. 8 a and Fig. 8 b are the embodiment schematic diagrames of the signal of type 6 fault processing, and consistent with some embodiment among the present invention.As previously mentioned, when HARQ Rx sends a nack message, but HARQTx is when receiving an ACK information, just may occurrence type 6 mistakes, i.e. NACK → ACK mistake.The embodiment schematic diagram of the signal among Fig. 8 a and Fig. 8 b can be implemented in the UMTS communication system, as Fig. 1 a person of touching upon.
For example, with reference to figure 8a, ARQ Tx can handle and send ARQ PDU nTo a memory buffer.HARQ Tx memory buffer acquisition from then on ARQ PDU nAnd encode it, and produce HARQPDU again nHARQ Tx can set a NDI value to HARQ PDU N+1Transmit HARQ PDU then nTo HARQ Rx.In the present embodiment, HARQ Tx can set the NDI value and equal 0.
At receiver end, HARQ Rx can receive HARQ PDU nAnd check its NDI value.Shown in Fig. 8 a, HARQ Rx can determine the HARQ PDU that receives nThe NDI value equal 0, but can detect PDU with HARQ nA mistake that interrelates so HARQ Rx can transmit a nack message to HARQ Tx, points out successfully not receive these data.Moreover HARQ Rx can store HARQ PDU nIn a soft buffering area that interrelates with HARQ Rx, and also can separate storage HARQPDU nThe portion of NDI value back up the memory area that interrelates with HARQ Rx in.
Yet shown in Fig. 8 a, HARQ Tx receives the nack message that HARQ Rx transmits would rather not, and can receive an ACK information.Once receive this ACK information, HARQ Tx can remove HARQ PDU from retransmission buffer n, and can prepare and transmit next PDU (that is HARQ PDU N+1) to HARQ Rx.HARQ Tx can store the portion that has transmitted data and back up in a retransmission buffer, replaces HARQ PDU nBecause this is a new data transmission, HARQ Tx can switch to 1 from 0 with the NDI value.
At receiver end, HARQ Rx can receive HARQ PDU N+1Transmission and check its NDI value.HARQ Rx can determine the HARQ PDU that receives N+1The NDI value equal 1.Yet because HARQ Rx had before sent a nack message, HARQ Rx may not expect to receive new data, but HARQ PDU is removed to receive in expectation one time nRe-transmission.Once HARQ Rx determines this NDI value to be switched, HARQ Rx can remove HARQ PDU from soft buffering area n
If HARQ Rx do not run into mistake, HARQ Tx can transmit an ACK information, points out that success receives data, but also can send an error indicator, and notice HARQ Tx has detected the reception (unexpected reception) of a non-expectation.Moreover HARQ Rx can store HARQ PDU N+1The portion of NDI value back up the memory area that interrelates with HARQ Rx in.
With reference to figure 8b, utilize scenario as Fig. 8 a, HARQ Rx can send an error indicator and respond a detected mistake.Yet in the present embodiment, this error indicator can comprise two values, the NDI that is touched upon as Fig. 5 a or Fig. 5 b eAnd S.In the present embodiment, because HARQ Rx is just expecting data that retransmit, but according to this NDI value, the decision that replaces is to have received new data, and this S value can be 0.This NDI eValue can be configured to the HARQ PDU that sends from HARQ Tx N+1The NDI value.So, in the present embodiment, this NDI eValue can equal 1.
The embodiment schematic diagram of the signal of Fig. 9 a and Fig. 9 b type 7 fault processing, and consistent with some embodiment among the present invention.As mentioned above, when HARQ Rx sends an ACK information, but HARQ Tx is when receiving a nack message, that is ACK → NACK, and type 7 mistakes can be mistakes.The embodiment schematic diagram of the signal among Fig. 9 a and Fig. 9 b can be implemented in the UMTS communication system, as Fig. 1 a person of touching upon.
For example, with reference to figure 9a, ARQ Tx can handle and send ARQ PDU nTo a memory buffer.HARQ Tx memory buffer acquisition from then on ARQ PDU nAnd encode it, thereby produce HARQPDU nHARQ Tx can set the NDI value of HARQ PDU, then with HARQ PDU nBe sent to receiver.In the present embodiment, HARQ Tx can set NDI=0.
At receiver end, HARQ Rx can receive HARQ PDU nAnd check its NDI value.Shown in Fig. 9 a, HARQ Rx can successfully receive HARQ PDU n, and can determine the HARQPDU that receives nThe NDI value equal 0.So HARQ Rx can send an ACK information to HARQ Tx, points out successfully to receive this data.Moreover HARQ Rx can be with HARQ PDU nThe NDI value be stored in the memory area that interrelates with HARQ Rx.
Yet, shown in Fig. 9 a.And can't help HARQ Rx and receive this ACK information, but HARQ Tx receives a nack message.So HARQ Tx can retransmit buffering area acquisition HARQ PDU certainly n, and with HARQ PDU nBe retransmitted to HARQ Rx.Because this is a data re-transmission, HARQ Tx can determine not go to switch (toggle) this NDI value.So, HARQ PDU nFor the second time the NDI value of transmission can with HARQ PDU nThe NDI value of original transmission is identical.
At receiver end, HARQ Rx can receive HARQ PDU nRetransmit, and check its NDI value.HARQ Rx can determine the HARQ PDU that receives nThe NDI value equal 0.Yet because HARQ Rx had before sent an ACK information, HARQ Rx possibly can't expect to receive HARQ PDU nRe-transmission, but can expect to receive new data.So if HARQ Rx does not run into mistake, then HARQRx can send an ACK information, point out successfully to receive this data, but also can send an error indicator that notice HARQ Tx has detected the reception (unexpected receipt) of a non-expectation.Moreover HARQ Rx can be with HARQ PDU nThe a back-up storage of NDI value in a memory area that interrelates with HARQ Rx.
With reference to figure 9b, it uses and at the scenario shown in Fig. 9 a, HARQ Rx can send an error indicator, responds a detected mistake.Yet in the present embodiment, this error indicator can comprise two values, i.e. S and NDI e, as above-mentioned Fig. 5 a or Fig. 5 b person of touching upon.In the present embodiment,, but, the substitute is decision ARQ PDU according to the NDI value because HARQ Rx is expecting new data nRe-transmission received that this S value can equal 1.This NDI eValue can be set at, the HARQ PDU that is sent by HARQ Tx nThe NDI value.So, in the present embodiment, this NDI eValue can equal 0.
Figure 10 a and Figure 10 b are the embodiment schematic diagrames of the signal of type 3 fault processing, and consistent with some embodiment among the present invention.As mentioned above, type 3 mistakes can be mistakes, wherein send a DTX by HARQRx mechanism, but HARQ Rx mechanism is misinterpreted as an ACK, i.e. one DTK → ACK mistake.The embodiment schematic diagram of the signal among Figure 10 a and Figure 10 b can be implemented in the UMTS communication system, as Fig. 1 a person of touching upon.
For example, with reference to figure 10a, ARQ Tx can handle and transmit ARQ PDU nTo a memory buffer.HARQ Tx memory buffer acquisition from then on ARQ PDU nAnd encode it, thereby produce HARQPDU nHARQ Tx can set HARQ PDU nThe NDI value, then HARQ PDUn is sent to receiver.In the present embodiment, HARQ Tx can set NDI=1.Moreover HARQ Tx can store HARQ PDU nPortion back up in a retransmission buffer.
At receiver end, HARQ Rx can receive HARQ PDU n, and check its NDI value.Shown in Figure 10 a, HARQ Rx can successfully receive HARQ PDU n, and can determine the HARQ PDU that receives nThe NDI value equal 1.So HARQ Rx can send an ACK information to HARQTx, points out successfully to receive these data, and transmit decoded HARQ PDU n(that is ARQPDU, n) to ARQ Rx.Moreover HARQ Rx can store HARQ PDU nThe portion of NDI value back up in a memory area that interrelates with HARQ Rx, replace any PDU that is before stored.
In response, HARQ Tx codified ARQ PDU N+1, thereby produce HARQ PDU N+1HARQ Tx can set HARQ PDU N+1The NDI value, transmit HARQ PDU then N+1To receiver.In the present embodiment, HARQ Tx can switch to 0 with NDI.Though be not shown among the figure, HARQ Tx can remove HARQ PDU from retransmission buffer n, and with HARQ PDU N+1Be stored in wherein.
At receiver end, HARQ Rx can determine the PDU with HARQ N+1The control information that interrelates comprises mistake.In the present embodiment, this mistake can be come identification by crc check.In response, HARQ Rx can produce and send a DTX information to HARQ Tx.Yet with this type of error, HARQ Tx can become this DTX information interpretation one ACK information.So HARQ Tx can prepare and transmit HARQ PDU N+2To HARQ Rx.In the present embodiment, the changeable NDI of HARQ Tx equals 1.Though be not shown among the figure, HARQ Tx can store HARQ PDU N+2In a retransmission buffer, replace HARQ PDU N+1
HARQ Rx can receive HARQ PDU N+2, and can check its NDI value.HARQ Rx can determine HARQ PDU N+2The NDI value be 1, this value and the HARQ PDU that had before received nThe NDI value identical, so HARQ Tx can determine the once re-transmission that this HARQ PDU that receives is PDU.Yet because HARQ Rx had before sent a DTX information, HARQ Rx possibly can't expect to receive HARQ PDU nOnce re-transmission, but can expect HARQ PDU N+1Once new transmission.If HARQ Rx does not run into mistake, HARQ Rx can send an ACK information, points out successfully to receive this data, but also can send an error indicator, and notice HARQ Tx has detected a non-expectation and received really.Moreover HARQ Rx can store HARQ PDU N+2The NDI value in a memory area that interrelates with HARQRx.
With reference to figure 10b, use with Figure 10 b in identical scenario, HARQ Rx can send an error indicator, responds a detection error.Yet in the present embodiment, this error indicator can comprise two values, i.e. S and NDI are as described in above-mentioned Fig. 5 a or Fig. 5 b.In the present embodiment, because HARQ Rx expectation new data, but the substitute is, determined a data re-transmission to receive, the value of this S can equal 1.This NDI eValue can be set at the Rx by HARQ, the HARQ PDU of reception N+2The NDI value.So, in the present embodiment, NDI eValue can equal 1.
Figure 11 is a flow process schematic diagram 1100, and the embodiment of the erroneous decision of type 2 (Fig. 7 a and Fig. 7 b), type 4 (Fig. 6 a and Fig. 6 b) and type 6 (Fig. 8 a and eight b figure) is described, and consistent with some embodiment among the present invention.The method embodiment of Figure 11 can be implemented in the UMTS communication system, as Fig. 1 a person of touching upon.
For example, with reference to Figure 11, once HARQ Tx receives error indicator (errorindicator) (step 1110) from HARQ Rx, HARQ Tx checks whether reached maximum transmit number of times (step 1115), the discussion of Fig. 7 a and Fig. 7 b as the aforementioned.If reached the maximum number of times (step 1115 is) that transmits, then HARQTx can determine that this error indicator is a type 2 mistakes (step 1120).Then, HARQ Tx can determine to produce whether the NACK (step 1125) an of this locality.If produced the NACK (step 1125 is) an of this locality, then HARQ Tx ignores error indicator (step 1130).Yet if do not produce the NACK (step 1125 denys) an of this locality, HARQ Tx produces and also transmits local NACK (step 1145).Local NACK can be sent to ARQ Tx to impel the grouped data of ARQ Tx retransmission of lost.
If HARQ Tx decision does not reach the maximum number of times (step 1115 denys) that transmits, HARQ Tx can check the type (step 1135) of the ACK/NACK information of before having received.If what before received is that (step 1135, ACK), then HARQ Tx can determine to have taken place a type 6 mistakes (step 1140) to ACK information, and produces and transmit the NACK (step 1145) an of this locality.As mentioned above, when HARQ Rx transmits a NACK, but HARQ Tx receive be an ACK time, but occurrence type 6 mistakes then.
If be that (step 1135, NACK), then HARQ Tx can determine to have taken place a type 4 mistakes (step 1150) to a nack message, and can ignore this error indicator (step 1130) before.As previously mentioned, the NDI value of sending from HARQ Tx when HARQ Rx faulty interpretation, but occurrence type 4 mistakes.
In this way, but HARQ Tx identification those do not need the type of error of ARQ Tx retransmission packet data, that is, type 4 mistakes, and the type of error that needs ARQ Tx retransmission packet data, for example, type 2 wrong with type 6 mistakes.Moreover, but HARQ Tx identification needs ARQ Tx retransmission packet data and the type of error of before participated in taking action (previously acted upon), that is type 2 mistakes had wherein before produced the NACK an of this locality.
Figure 12 is a flow process schematic diagram, and the decision embodiment of the mistake of type 2, type 3, type 4, type 6 and type 7 is described, and consistent with some embodiment among the present invention.For example, type 2 mistakes (Fig. 6 b and Fig. 6 c), type 4 mistakes (Fig. 7 a and Fig. 7 b), type 6 mistakes (Fig. 8 a and Fig. 8 b) may be difficult to differentiate each other.The embodiment method of Figure 12 can be implemented in the UMTS communication system, as Fig. 1 a person of touching upon.
With reference to Figure 12, for example, HARQ Tx can receive the error indicator (step 1210) from HARQ Rx.In this flow process, this error indicator can comprise NDI eWith the S value.So HARQ Tx can check the NDI of error indicator eWhether equal the NDI value (step 1215) of the previous grouped data of having transmitted.If unequal (step 1215, not), then HARQ Tx can determine that this error indicator is a type 4 mistakes (step 1220).The discussion of Fig. 7 a and Fig. 7 b as described above, type 4 mistakes can betide as NDI during by faulty interpretation.Because type 4 mistakes can reduce system effectiveness, but can not cause packet data loss, HARQ Tx can ignore this error indicator (step 1225).
If NDI eEqual NDI (step 1215 is), then HARQ Tx can check S (step 1230).If S=0, then HARQ Tx can determine a type 2 mistakes or a type 6 mistakes that (step 1235) may take place.The discussion of Fig. 6 b and Fig. 6 c as described above, type 2 mistakes can betide when reaching maximum transmission times.The discussion of Fig. 8 a and Fig. 8 b as described above, type 6 mistakes can betide when one NACK → ACK mistake takes place.Because type 2 mistakes all can cause packet data loss with type 6 mistakes, so HARQ Tx need send local NACK to an ARQ Tx (step 1240).
If S=1 (step 1230,, S=1), then HARQ Tx can check that the grouped data of before having sent from HARQ Tx is the re-transmission or the transmission (step 1245) of new grouped data.The discussion of Figure 10 a and Figure 10 b as the aforementioned, S=1 can point out that HARQ Rx expectation receives the transmission of a new grouped data.So, if NDI e=NDI and S=1, HARQ Tx can check the grouped data that transfers to HARQ Rx whether be HARQ Rx desired be new grouped data.
If HARQ Tx determines that this transmission is re-transmissions (step 1245 is), then HARQ Tx can determine to have taken place a type 7 mistakes (step 1255).As the discussion of above-mentioned Fig. 9 a and Fig. 9 b, type 7 mistakes can betide as HARQ Rx and send a NACK but HARQ Tx when receiving a NACK.Because type 7 mistakes can not cause packet loss, HARQ Tx can ignore this error indicator (step 1225).
If HARQ Tx determines that this transmission is not to retransmit (step 1245 denys), then HARQ Tx can determine to have taken place a type 3 mistakes (step 1250).The discussion of Figure 10 a and the tenth b as described above, type 3 mistakes can betide as HARQ Rx and send a DTX information, but when HARQ Tx receives an ACK information.Because type 3 mistakes can cause grouped data to be lost, HARQ Tx can produce and transmit NACK to the ARQ Tx (step 1240) an of this locality.
Disclosed embodiment of this invention all can realize in the network that adopts W-CDMA technology, agreement or standard.Therefore, but the disclosed embodiment of this invention identification need be at the type of error of high-rise (high layer) data retransmission, that is type 4 and type 7 mistakes, and need be at the type of error of high-rise data retransmission, that is type 2 and type 6.Can not cause packet loss by identification, therefore need be in those mistakes of high level re-transmission, disclosed embodiment of this invention can reach the usefulness of improvement.Especially, disclosed embodiment of this invention can reduce signal processing time, and improves the data circulations (data traffic flow) of debug and data retransmission in the W-CDMA network.
Above-described only is preferable possible embodiments of the present invention; described embodiment is not in order to limit scope of patent protection of the present invention; therefore the equivalent structure done of every utilization specification of the present invention and accompanying drawing content changes, and in like manner all should be included in protection scope of the present invention.

Claims (54)

1. the error-detecting method of a communication system, this method comprises:
Transmit data to a receiving system by a transmitting device;
Reception is really collected mail from one of this receiving system and is ceased, and the breath of wherein should really collecting mail responds gives these data that are sent to this receiving system;
Reception is from an error indicator of this receiving system, and wherein this error indicator interrelates with these data that are sent to this receiving system; And
Based on true breath and this error indicator of collecting mail of at least one pen, determine a type of error.
2. the error-detecting method of communication system as claimed in claim 1, this method also comprises: by this transmitting device, a backup that is sent to these data of this receiving system of storage.
3. the error-detecting method of communication system as claimed in claim 1, this method also comprises: the transmission number of times that determines these data; And
Determine the transmission number of times of these data whether to be equal to or less than of this data and can allow the maximum times that transmits.
4. the error-detecting method of communication system as claimed in claim 3, this method also comprises: when this transmission number of times of this data equals this maximum times that can allow to transmit, determine a predetermined type of error; And
When this predetermined type of error is determined, confirm whether to have transmitted one first local information.
5. the error-detecting method of communication system as claimed in claim 4, this method also comprises:
When this first local information also is not transmitted, produce one second local information; And
Transmit this pen second local information, wherein this pen second local information makes this transmitting device retransmit these data to this receiving system.
6. the error-detecting method of communication system as claimed in claim 3, this method also comprises:
When this of this data transmits number of times less than this admissible maximum times, determine an information type of this breath of really collecting mail.
7. the error-detecting method of communication system as claimed in claim 6, this method also comprises:
When this information type comprises a NACK, determine a predetermined type of error.
8. the error-detecting method of communication system as claimed in claim 7 wherein determines this predetermined type of error also to comprise:
Produce a local information; And
Transmit this local information, wherein this local information makes this transmitting device retransmit these data to this receiving system.
9. the error-detecting method of communication system as claimed in claim 6, this method also comprises:
When this information type comprises an ACK, determine a predetermined type of error.
10. the error-detecting method of communication system as claimed in claim 9 wherein determines this predetermined type of error also to comprise:
This error indicator is ignored in decision.
11. the error-detecting method of a communication system, this method comprises:
Transmit data to a receiving system by a transmitting device;
Receive a true breath of collecting mail from this receiving system, wherein really these data that are sent to this receiving system are given in the response of collection of letters breath;
Reception is from an error indicator of this receiving system, and wherein this error indicator interrelates with these data that are sent to this receiving system; And
Based on true breath and this error indicator of collecting mail of at least one pen, determine a type of error, wherein this error indicator comprises an at least one new data indicator and an expectation data value.
12. the error-detecting method of communication system as claimed in claim 11, wherein this new data indicator is one first new data indicator, and this method also comprises:
Relatively this first new data indicator and one second new data indicator.
13. the error-detecting method of communication system as claimed in claim 12, this method also comprises:
Unequal during when this first new data indicator in this second new data indicator, determine a predetermined type of error.
14. the error-detecting method of communication system as claimed in claim 13 determines this predetermined type of error also to comprise:
This error indicator is ignored in decision.
15. the error-detecting method of communication system as claimed in claim 12, this method also comprises:
When this first new data indicator is equal to this second new data indicator, determine a value, this value and this desired data value interrelate.
16. the error-detecting method of communication system as claimed in claim 15, this method also comprises:
When this value is equal to one first value, produce a local information; And
Transmit this local information, wherein this local information makes this transmitting device retransmit this data.
17. the error-detecting method of communication system as claimed in claim 15, this method also comprises:
When this value was equal to one second value, whether the data that decision and this error indicator interrelate have been transmitted surpassed once.
18. the error-detecting method of communication system as claimed in claim 17, this method also comprises:
When the data that interrelate with this error indicator are not transmitted when surpassing one time, determine a predetermined type of error.
19. the error-detecting method of communication system as claimed in claim 18 wherein determines this predetermined type of error also to comprise:
Produce a local information; And
Transmit this local information, wherein this local information makes this transmitting device retransmit this data.
20. the error-detecting method of communication system as claimed in claim 17, this method also comprises:
When the data that interrelate with this error indicator are transmitted when surpassing one time, determine a predetermined type of error.
21. the error-detecting method of communication system as claimed in claim 20 wherein determines this predetermined type of error also to comprise:
Produce a local information; And
Transmit this local information, wherein this local information makes this transmitting device retransmit this data.
22. the error-detecting method of a communication system, this method comprises:
Reception is from the data of a transmitting device, and wherein these data comprise a new data indicator;
Transmit one and really collect mail breath to this transmitting device, these data are given in the breath response of wherein should really collecting mail;
Whether exist at least one mistake and this data to interrelate by receiving system decision; And
When this at least one erroneous decision, transmit an error indicator to this transmitting device, wherein this error indicator comprises an at least one new data indicator and an expectation data value.
23. the error-detecting method of communication system as claimed in claim 22, wherein this new data indicator is one first new data indicator, and this method also comprises:
Determine one second new data indicator, wherein this second new data indicator is from this transmitting device and is received.
24. the error-detecting method of communication system as claimed in claim 23, this method also comprises:
Set this first new data indicator and be equal to this second new data indicator.
25. the error-detecting method of communication system as claimed in claim 22, this method also comprises:
Determine by this receiving system whether new data is the data that are supposed to;
When the decision new data was the data that are supposed to, setting this data value that is supposed to was one first value; And
When the decision new data was not the data that are supposed to, setting this data value that is supposed to was one second value.
26. the error-detecting method of communication system as claimed in claim 25, wherein this decision also comprises:
Relatively this first new data indicator and one the 3rd new data indicator, wherein the 3rd new data indicator and previous data that receive interrelate;
Unequal during when this first new data indicator in the 3rd new data indicator, set this data value that is supposed to and be this first value; And
When this first new data indicator is equal to the 3rd new data indicator, sets this data value that is supposed to and be this second value.
27. the error-detecting method of communication system as claimed in claim 25, wherein this first value is Boolean with this second value.
28. the radio stations of a radio communication, this radio stations comprises:
At least one memory, storage data and instruction; And
At least one processor, when carrying out this instruction, this processor is configured to this memory of access and is configured to carry out following action:
To transmit data and deliver to a receiving system;
Reception is really collected mail from one of this receiving system and is ceased, and the breath of wherein should really collecting mail responds to these transmission data;
Reception is from an error indicator of this receiving system, and wherein this error indicator and this transmission data interrelate; And
Based on true breath and this error indicator of collecting mail of at least one pen, determine a type of error.
29. the radio stations of radio communication as claimed in claim 28, wherein this at least one processor is configured to store the backup of a these transmission data in this memory.
30. the radio stations of radio communication as claimed in claim 29, wherein this at least one processor is configured to carry out following action:
Determine the transmission number of times of these transmission data; And
Determine this transmission number of times whether to be equal to or less than of this transmission data and can allow the maximum times that transmits.
31. the radio stations of radio communication as claimed in claim 30, wherein this at least one processor is configured to carry out following action:
When this this transmission number of times equals this maximum times that can allow to transmit, determine a predetermined type of error; And
When this predetermined type of error is determined, confirm whether to have transmitted one first local information.
32. the radio stations of radio communication as claimed in claim 31, wherein this at least one processor is configured to carry out following action:
When this first local information also is not transmitted, produce one second local information; And
Transmit this pen second local information, wherein this pen second local information makes this transmitting device retransmit this transmission data.
33. the radio stations of radio communication as claimed in claim 31, wherein this at least one processor is configured to carry out following action: when this transmission number of times of this data during less than this admissible maximum times, determine an information type of this breath of really collecting mail.
34. the radio stations of radio communication as claimed in claim 33, wherein this at least one processor is configured to carry out following action:
When this information type comprises a NACK, determine a predetermined type of error.
35. the radio stations of radio communication as claimed in claim 34, type of error wherein in order to determine that this is predetermined, this at least one processor is configured to carry out following action:
Produce a local information; And
Transmit this local information, wherein this local information makes this transmitting device retransmit this transmission data.
36. the radio stations of radio communication as claimed in claim 33, wherein this at least one processor is configured to carry out following action:
When this information type comprises an ACK, determine a predetermined type of error.
37. the radio stations of radio communication as claimed in claim 36, type of error wherein in order to determine that this is predetermined, this at least one processor is configured to carry out following action:
This error indicator is ignored in decision.
38. the radio stations of a radio communication, this radio stations comprises:
At least one memory, storage data and instruction; And
At least one processor, when carrying out this instruction, this processor is configured to this memory of access and is configured to carry out following action:
To transmit data and deliver to a receiving system;
Reception is really collected mail from one of this receiving system and is ceased, and the breath of wherein should really collecting mail responds to these transmission data;
Reception is from an error indicator of this receiving system, and wherein this error indicator and this transmission data interrelate; And
Based on true breath and this error indicator of collecting mail of at least one pen, determine a type of error, wherein this error indicator comprises an at least one new data indicator and an expectation data value.
39. the radio stations of radio communication as claimed in claim 38, wherein this at least one processor is configured to relatively this first new data indicator and one second new data indicator.
40. the radio stations of radio communication as claimed in claim 39, wherein this at least one processor is configured to carry out following action:
Unequal during when this first new data indicator in this second new data indicator, determine a predetermined type of error.
41. the radio stations of radio communication as claimed in claim 40, type of error wherein in order to determine that this is predetermined, this at least one processor is configured to carry out following action:
This error indicator is ignored in decision.
42. the radio stations of radio communication as claimed in claim 39, wherein this at least one processor is configured to carry out following action:
When this first new data indicator is equal to this second new data indicator, determine a value, this value and this desired data value interrelate.
43. the radio stations of radio communication as claimed in claim 42, wherein this at least one processor is configured to carry out following action:
When this value is equal to one first value, produce a local information; And
Transmit this local information, wherein this local information makes this transmitting device retransmit this transmission data.
44. the radio stations of radio communication as claimed in claim 42, wherein this at least one processor is configured to carry out following action:
When this value was equal to one second value, whether the data that decision and this error indicator interrelate have been transmitted surpassed once.
45. the radio stations of radio communication as claimed in claim 44, wherein this at least one processor is configured to carry out following action:
When the data that interrelate with this error indicator are not transmitted when surpassing one time, determine a predetermined type of error.
46. the radio stations of radio communication as claimed in claim 45, type of error wherein in order to determine that this is predetermined, this at least one processor is configured to carry out following action:
Produce a local information; And
Transmit this local information, wherein this local information makes this transmitting device retransmit this transmission data.
47. the radio stations of radio communication as claimed in claim 44, wherein this at least one processor is configured to carry out following action:
When the data that interrelate with this error indicator are transmitted when surpassing one time, determine a predetermined type of error.
48. the radio stations of radio communication as claimed in claim 45, type of error wherein in order to determine that this is predetermined, this at least one processor is configured to carry out following action:
Produce a local information; And
Transmit this local information, wherein this local information makes this transmitting device retransmit this transmission data.
49. the radio communication device of a radio communication, this radio communication device comprises:
At least one memory, storage data and instruction; And
At least one processor, when carrying out this instruction, this processor is configured to this memory of access and is configured to carry out following action:
Reception is from the transmission data of a transmitting device, and wherein this transmits data packets is drawn together a new data indicator;
Transmit one and really collect mail breath to this transmitting device, the breath response of wherein should really collecting mail is to these transmission data;
Whether decision exists at least one mistake and this transmission data to interrelate; And
When this at least one wrong quilt determines, transmit an error indicator to this transmitting device, wherein this error indicator comprises an at least one new data indicator and an expectation data value.
50. the radio communication device of radio communication as claimed in claim 49, wherein this new data indicator is one first new data indicator, and this at least one processor is configured to carry out following action:
Set this first new data indicator and be equal to this second new data indicator, wherein this second new data indicator is from this transmitting device and be received.
51. the radio communication device of radio communication as claimed in claim 50, wherein this at least one processor is configured to carry out following action: determine by this receiving system whether new data is the data that are supposed to;
When the decision new data was the data that are supposed to, setting this data value that is supposed to was one first value; And
When the decision new data was not the data that are supposed to, setting this data value that is supposed to was one second value.
52. the radio communication device of radio communication as claimed in claim 50, type of error wherein in order to determine that this is predetermined, this at least one processor is configured to carry out following action:
Relatively this first new data indicator and one the 3rd new data indicator, wherein the 3rd new data indicator and previous data that receive interrelate;
Unequal during when this first new data indicator in the 3rd new data indicator, set this data value that is supposed to and be this first value; And
When this first new data indicator was equal to the 3rd new data indicator, setting this data value that is supposed to was one second value.
53. the radio communication device of radio communication as claimed in claim 51, wherein this first value is Boolean with this second value.
54. the radio communication device of radio communication as claimed in claim 52, wherein this first value is Boolean with this second value.
CNA2007101021734A 2006-05-03 2007-04-29 Error detection and retransmission methods and devices for communication systems Pending CN101296059A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102484572A (en) * 2009-07-02 2012-05-30 瑞典爱立信有限公司 Improved signal reception in wireless communication systems using automatic repeat request transmissions and conditional interference cancellation in case of NACK misinterpretation
CN102668686A (en) * 2009-12-21 2012-09-12 诺基亚公司 Secondary system usage in multicarrier networks
CN105264811A (en) * 2013-05-10 2016-01-20 惠普发展公司，有限责任合伙企业 Tuple recovery
CN114008955A (en) * 2019-06-12 2022-02-01 联想（新加坡）私人有限公司 Responding to new data indicators for hybrid automatic repeat request processes

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102484572A (en) * 2009-07-02 2012-05-30 瑞典爱立信有限公司 Improved signal reception in wireless communication systems using automatic repeat request transmissions and conditional interference cancellation in case of NACK misinterpretation
CN102484572B (en) * 2009-07-02 2014-10-29 瑞典爱立信有限公司 Improved signal reception in wireless communication systems using automatic repeat request transmissions and conditional interference cancellation in case of NACK misinterpretation
CN102668686A (en) * 2009-12-21 2012-09-12 诺基亚公司 Secondary system usage in multicarrier networks
CN102668686B (en) * 2009-12-21 2015-04-15 诺基亚公司 Secondary system usage in multicarrier networks
US9276708B2 (en) 2009-12-21 2016-03-01 Nokia Technologies Oy Secondary system usage in multicarrier networks
CN105264811A (en) * 2013-05-10 2016-01-20 惠普发展公司，有限责任合伙企业 Tuple recovery
CN114008955A (en) * 2019-06-12 2022-02-01 联想（新加坡）私人有限公司 Responding to new data indicators for hybrid automatic repeat request processes

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