WO2008007176A1 - Procédé et dispositif d'émission-réception de données en mode d'accès par paquets sur une liaison descendante à haut débit - Google Patents

Procédé et dispositif d'émission-réception de données en mode d'accès par paquets sur une liaison descendante à haut débit Download PDF

Info

Publication number
WO2008007176A1
WO2008007176A1 PCT/IB2007/000782 IB2007000782W WO2008007176A1 WO 2008007176 A1 WO2008007176 A1 WO 2008007176A1 IB 2007000782 W IB2007000782 W IB 2007000782W WO 2008007176 A1 WO2008007176 A1 WO 2008007176A1
Authority
WO
WIPO (PCT)
Prior art keywords
pdu
mac
multiplexed
sequence number
receiving
Prior art date
Application number
PCT/IB2007/000782
Other languages
English (en)
Chinese (zh)
Inventor
Sheng Liu
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008007176A1 publication Critical patent/WO2008007176A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/324—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the data link layer [OSI layer 2], e.g. HDLC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1832—Details of sliding window management

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a High Speed Downlink Packet Access (HSDPA) technology.
  • HSDPA High Speed Downlink Packet Access
  • 3GPP 3rd Generation Partnership Project
  • 3G Third Generation
  • the bearers of the uplink and downlink services in its earlier protocol versions are based on dedicated channels.
  • High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA) are important evolutions of 3G technology.
  • HSDPA As a downlink high-speed packet access technology was introduced into the 3GPP version 5 (Release 5, "R5") version in 2002, which uses a shorter 2ms transmission time interval (Transmission Time Interval, Call “ ⁇ ” for fast adaptive control.
  • Adaptive Modulation and Coding (“AMC”) and Hybrid Auto Repeat reQuest (HARQ) are used at the physical layer. ).
  • the role of the wireless interface protocol is to establish, reconfigure, and release radio bearers.
  • the HSDPA-related protocol in the wireless air interface has three layers from the control plane: the physical layer is the first layer, the medium access control protocol layer ("MAC") and The radio link control protocol (Radio Link Control, "RLC”) layer is the second layer, and the corresponding Radio Resource Control (“RRC”) layer is the second layer.
  • the MAC layer logical structure consists of three logical entities:
  • MAC-b entity which is used to process the broadcast channel (Broadcast Channel, referred to as "BCH"), in each user equipment (User Equipment, called “UE”) and the universal mobile communication system terrestrial radio access network (UMTS Terrestrial Radio Access)
  • BCH Broadcast Channel
  • UE User Equipment
  • UMTS Terrestrial Radio Access Each cell (located in Node B) of Network, referred to as "UTRAN”, has a MAC-b entity.
  • PCH paging Channel
  • FACH forward access channel
  • RACH Random Access Channel
  • RACH Random Access Channel
  • DSCH Downlink Shared Channel
  • CRNC Controlling Radio Network Controller
  • DCH dedicated Channel
  • HSDPA adds a high-speed downlink shared channel in the way of DSCH reference (High The Speed Downlink Shared Channel, called "HS-DSCH", relies on HARQ and AMC to adapt to channel variations. Different users share HS-DSCH channels on time division and code division.
  • a High Speed Shared Control Channel (HS-SCCH) is also added, and the HS-DSCH-related uplink uses a High Speed Dedicated Physic Control Channel (referred to as "High Speed Dedicated Physic Control Channel”).
  • HS-DPCCH High Speed Dedicated Physic Control Channel
  • ACKTNACK bit information ACKTNACK bit information
  • CQI Channel Quality Indication
  • the UE learns whether there is data sent by the Node B on the corresponding HS-DPDCH through the HS-SCCH, and obtains the number of parallel code channels and corresponding spreading codes and transmission block sizes required for demodulating the HS-PDSCH from the HS-SCCH. Transmission format and resource information of the modulation scheme, etc.; In each TTI, the HS-PDSCH can only transmit data of one UE.
  • the information carried by the HS-SCCH includes: 7-bit channel code set information, 1-bit modulation scheme information, 6-bit transmission block size information, 3-bit HARQ process information, 3-bit redundancy version, and Constellation version information, 1 bit new data indicator (New Data Indicator) and 16-bit UE identification HS-DSCH Radio Network Temporary Identity ("HR TI") famous UE according to HS -
  • the 16-bit H-RNTI carried on the SCCH is used to determine whether the corresponding HS-PDSCH channel carries its own data. Since the HSDPA adds the transmission channel HS-DSCH, in order to support the physical layer process of HSDPA,
  • the MAC layer of the UE and UTRAN adds an HSDPA-specific function.
  • the entity MAC-hs, to handle the required actions, namely the scheduling of HARQ, AMC and HS-DSCH (Scheduling) - the structure of the MAC-hs entity in the UTRAN and the UE are as shown in Figures 1 and 2, respectively.
  • PDU MAC-d Protocol Data Unit
  • SDU Service Data Unit
  • resources on the HS-DSCH between the HARQ entities are managed by priority processing and packet scheduling (Scheduling/Priority Handling) according to the priority of the SDU.
  • the HARQ entity In addition to determining whether to retransmit the PDU or send a new PDU according to the status report returned by the HARQ entity, the HARQ entity also determines the Queue ID (Queue Number) and the Transmission Sequence Number ("TSN") of the MAC-hs PDU. Among them, a UE can have up to 8 independent HARQ processes.
  • the Transport Format Resource Combination (“TFRC") selection unit is responsible for selecting the number of code channels including parallel and the corresponding spreading code, transmission block size, modulation scheme, etc. for transmission on the HS-DSCH. Format and resources. As shown in FIG. 2, when the MAC-hs entity on the UE side receives the MAC-hs from the HS-DSCH channel.
  • the PDU is first sent to the HARQ entity, and the HARQ entity on the UE side is the receiver of the HARQ entity on the UTRAN side, and is responsible for performing operations such as generating an ACK (correct response)/NACK (error response) response, HARQ soft combining, and the like.
  • the reordering queue unit allocates the MAC-hs PDU according to the Queue ID field of the MAC-hs PDU header to the corresponding reordering queue, and in the reordering queue, according to the header of each MAC-hs PDU
  • the TSN field reorders the MAC-hs PDUs to restore the original packet sequence.
  • the original sequence of MAC-hs PDUs is sent to the split unit, and the split unit is based on the MAC-hs PDU header.
  • SID length indication of SDU
  • N SDU The PDU is sent to the MAC-d entity.
  • the transmission format of the MAC-hs PDU is shown in Figure 3, where the PDU is divided into a header and a payload portion.
  • the header contains fields such as Version Flag (VF), Queue ID, TSN, SID, N and F.
  • VF Version Flag
  • the length of the VF field is 1 bit, which is used to identify the version of the PDU.
  • the VF value of the current protocol is 0.
  • the length of the Queue ID field is 3 bits, which is used to identify the PDU of the same priority queue.
  • the length of the TSN field is 6 bits.
  • the length of the SID field is 3 bits, and is used to indicate the length of the SDUs of the same size sequenced together (the length of the SDU)
  • the corresponding SID is configured by the upper layer
  • the length of the N field is 7 bits, indicating the number of SDUs that are cascaded together in the same size.
  • the payload portion is multiplexed by multiple SDUs, and the SDUs of the same length are cascaded together, and the size and the number of SDUs that are sequentially cascaded are identified by the corresponding SID and N fields of the PDU header.
  • the F field of 1 bit indicates whether the subsequent SID and N field identifiers corresponding to the SDU of another size, wherein if the F field is "0", the subsequent SDU corresponding to another size is corresponding to The SID and N field identifiers, if the field is "1", indicate the end of the PDU header, that is, the subsequent payload portion of the PDU.
  • HSDPA packet voice
  • IP packet over
  • the MAC-hs entity can only transmit data of one of the priority queues, so that the current TTI is The actual bandwidth on the HS-DSCH is not fully utilized, and the utilization of the air interface resources is low.
  • the MAC-hs PDU level of at least two different priority queues may be required.
  • the multiplexed PDUs that are joined together to form a cascade are transmitted in one TTI.
  • the structure of the multiplexed PDU can have various definitions, and FIG. 4a and FIG. 4b show the structure of two kinds of multiplexed PDUs.
  • each MAC-hs PDU (without padding field) of two or more priority queues belonging to the same UE is cascaded after removing the VF.
  • PF is a padding pointer identifier indicating whether there is a padding pointer field.
  • a CF field of one bit is added after each MAC-hs PDU, and when the CF does not exist, it indicates that the MAC-hs PDU is not filled with data; when the CF exists, it is used to indicate that the subsequent data is another
  • the MAC-hs PDU is either padding data.
  • the MAC-hs structures on the corresponding UTRAN side and UE side are as shown in FIG. 5 and FIG. 6, respectively.
  • the PDU cascading unit is added to the priority processing and the packet scheduling function in the MAC-hs entity on the UTRAN side, so that MAC-hs PDUs of different priority queues from the same UE are formed in the PDU cascading unit as needed.
  • a de-cascading unit is added between the HARQ entity and the reordering queue allocating unit, and the function of the unit is to multiplex the MAC-hs in the PDU.
  • the PDUs are delimited so that corresponding de-cascading can be implemented to demultiplex each individual MAC-hs PDU from the multiplexed PDU.
  • the receiving window in the HSDPA receiving end MAC-hs reordering queue is shown in Figure 7.
  • the receiving window size (RECEIVE JI DOW_SIZE) is set by the upper layer protocol. Since the maximum value of TSN is 63, the maximum receiving window size is 32 in order not to cause TSN blurring.
  • the MAC-hs PDU whose value is the variable RcvWindow_UpperEdge (the upper edge of the receiving window) is the receiving end.
  • the MAC-hs PDUs with the highest sequence number value among all the received MAC-hs PDUs; the MAC-hs PDUs whose TSN is smaller than the value of the variable next_expected_TSN (the next expected received TSN) have been received sequentially.
  • the receiving process of the sliding window based MAC-hs PDU in the HSDPA receiving end reordering queue is as shown in FIG. 8.
  • step 801 when a MAC-hs PDU whose TSN is the SN arrives at the reordering queue, it is first determined whether the SN is in the receiving window. If yes, the process proceeds to step 807; otherwise, the process proceeds to step 802.
  • step 802 the SN is outside the receiving window, and the MAC-hs PDU is buffered according to S at a corresponding position in the reordering queue. Go to step 803.
  • step 803 the receiving window is advanced, that is, RcvWindow-UpperEdge is updated to SN. And proceeds to step 804.
  • step 804 the MAC-hs PDU in the original receiving window with the TSN less than or equal to RcvWindow_Upper Edge-RECEIVE_WINDOW_SIZE is moved out of the reordering queue and output to the splitting unit, and then outputted to the splitting unit. Go to step 805.
  • step 805 it is further determined whether next_expected_TSN is after the updated reception window, and if yes, proceeds to step 806; otherwise, proceeds to step 810.
  • step 807 it is determined whether the SN is smaller than the next-expected-TSN or the MAC-hs PDU with the sequence number SN has been received. If yes, the process proceeds to step 808; otherwise, the process proceeds to step 809.
  • step 808 the MAC-hs PDU is discarded and likewise proceeds to step 810.
  • step 809 the MAC-hs PDU is buffered according to S at a corresponding location in the reordering queue, and likewise proceeds to step 810.
  • step 810 it is determined whether there is already a MAC-hs PDU whose TSN is next_expected-TSN in the reordering queue. If yes, the process proceeds to step 811; otherwise, the process ends. In step 811, all the TSNs are sequentially added from the next-expected- TSN sequence to the first MAC-hs PDU that has not been received yet to the split unit, and then proceeds to step 812. In step 812, the next-expected- TSN is set to the TSN of the first MAC-hs PDU that has not been received. End this process. Compared with the above receiving process, the transmitting end is also transmitted based on the sliding window, as shown in FIG.
  • the sender After transmitting a MAC-hs PDU whose TSN is SN0, the sender will retransmit if it receives the NACK message from the receiving end. If SN0 ⁇ SN b TRANSMIT — WINDOW — SIZE is still not received correctly, it will not be performed. Retransmission, where TRANSMIT_WINDOW_SIZE is the size of the transmission window, and SN1 is the TSN of the most recently transmitted MAC-hs PDU. When a single MAC-hs PDU is transmitted, stopping the retransmission of the MAC-hs PDU is caused by the sliding of the transmit window.
  • the average number of retransmissions of MAC-hs PDUs in different priority queues in the multiplexed PDU is affected by the sliding of the transmission window.
  • the influence of dynamic factors such as the number of MAC-hs priority queues, the number of users, and the amount of data transmitted, and the priority of the corresponding priority queue of the MAC-hs PDU. Therefore, when the scheme for transmitting the multiplexed PDU is used, since the existing receiving process for the MAC-hs PDU only considers the sliding factor of the receiving window, the MAC-hs PDUs of the different priority queues cannot be effectively transmitted. . More information related to the above technical solutions can be found in the following documents:
  • the present invention provides a data transmission and reception method and device for high-speed downlink packet access, so that MAC-hs PDUs of multiple different priority queues can be effectively transmitted.
  • a data receiving method for high speed downlink packet access including the following steps: the user equipment obtains a high speed medium access control MAC-hs protocol data unit PDU multiplexed by at least two priority queues on the network side.
  • a data retransmission method for providing high speed downlink packet access includes the following steps: multiplexing, at a network side, a high speed medium access control MAC-hs protocol data unit PDU of at least two priority queues into a multiplexing PDU, When the multiplexed PDU is retransmitted, if the MAC-hs PDU that meets the predetermined condition included in the multiplexed PDU is required to stop retransmission, the retransmission of the multiplexed PDU is stopped.
  • a user equipment for providing high speed downlink packet access includes a receiving module for receiving a PDU, and a demultiplexing module, configured to receive, by the receiving module, at least two priority queues by the network side.
  • the multiplexed PDU is demultiplexed to obtain at least one MAC-hs PDU; at least one reordering queue is used for reordering the MAC-hs PDU; and window monitoring a module, configured to monitor, during a period from the first transmission to the correct reception of the multiplexed PDU, whether a moving distance of a receiving window of the reordering queue to which the MAC-lis PDU belongs is greater than or equal to a predetermined value, and if yes, discard the MAC-hs PDU.
  • a base station node for high speed downlink packet access including: a multiplexing module, configured to multiplex a high speed medium access control MAC-hs protocol data unit PDU of at least two priority queues into a multiplexed PDU; And the second judging module is configured to determine whether the MAC-hs PDU included in the multiplexed PDU that meets the predetermined condition is required to stop retransmission, if yes The transmission module stops retransmission of the multiplexed PDU.
  • the UE when the UE correctly receives the multiplexed PDU, the UE does not directly cache the MAC-hs PDU into the corresponding reordering queue, but determines that Whether the moving distance of the receiving window of the corresponding reordering queue has exceeded the limit from the first transmission to the correct reception of the multiplexed PDU, and if so, discarding the MAC-hs PDU, otherwise the MAC-hs PDU is buffered to the corresponding weight Sort the queue.
  • the UE can pre-exclude a batch of obsolete MAC-hs PDUs, reducing the problem of erroneously collecting outdated MAC-hs PDUs because the TSN numbers are the same.
  • the timing of stopping the multiplexing of PDU retransmissions is specified. For example, when all the MAC-hs PDUs included in the multiplexed PDU are required to stop retransmission, or the multiplexed MAC-hs PDU of the corresponding priority queue in the MAC-hs PDU included in the PDU is multiplexed.
  • the maximum MAC-hs PDU is required to stop retransmission and the like.
  • the retransmission of the multiplexed PDU is stopped, which reduces the waste of resources, because at least one MAC-hs PDU in the retransmitted multiplexed PDU is valid, and on the other hand, the transmission performance is guaranteed, not because of one If the MAC-hs PDU is invalid, the multiple valid MAC-hs PDUs in the multiplexed PDU are stopped and retransmitted together.
  • FIG. 1 is a structural diagram of a UTRAN-side MAC-hs supporting single-priority queue multiplexing in the prior art
  • FIG. 2 is a structural diagram of a UE-side MAC-hs supporting single-priority queue multiplexing in the prior art
  • FIG. 4 is a structural diagram of a UTRAN side MAC-hs supporting multi-priority queue multiplexing in the prior art
  • 5 is a structural diagram of a UE-side MAC-hs supporting multi-priority queue multiplexing in the prior art
  • FIG. 6 is a schematic diagram of a format of a multi-priority queue-multiplexed MAC-hs PDU in the prior art; A schematic diagram of a receiving window in a reordering queue of a HSDPA receiving end in the prior art;
  • FIG. 8 is a flowchart of a method for transmitting a MAC-hs PDU with single priority queue multiplexing in the prior art;
  • FIG. 9 is a transmission window of a HSDPA transmitting end in the prior art.
  • FIG. 10 is a schematic diagram of a reception error caused by TSN ambiguity of a cascaded MAC-hs PDU in an embodiment of the present invention;
  • FIG. 11 is a flowchart of a data reception method of HSDPA according to the first embodiment of the present invention. detailed description
  • the present invention when the UE correctly receives data from the network side, it is determined whether the data is a multiplexed PDU formed by cascading MAC-hs PDUs in at least two priority queues of the same UE, or belongs to the same priority queue.
  • the MAC-hs PDU of the queue with a higher priority and a smaller transmit/receive window may be "outdated, for a long time, so the received TSN of the MAC-hs PDU will be The TSN with the current receive window is ambiguous (the MAC-hs PDU of the single priority queue will not be blurred). If the TSN of the "outdated" MAC-hs PDU is within the current receive window (due to TSN blur) The illusion of receiving the "outdated" MAC-hs PDU may cover the useful MAC-hs PDU of the same TSN.
  • the "outdated" MAC-hs PDU will cause the receiving window to be erroneously advanced and the loss of a large number of MAC-hs PDUs if it directly enters the corresponding reordering queue. , as shown in Figure 10. Therefore, in the present invention, when the UE correctly receives the multiplexed PDU, it does not cache the MAC-hs PDU therein into the corresponding reordering queue, but judges that the multiplexing is performed from the first transmission to the correct reception.
  • the timing for stopping the retransmission of the multiplexed PDU is specified. For example, when all the MAC-hs PDUs included in the multiplexed PDU are required to stop retransmission, or the multiplexed MAC-hs PDU of the corresponding priority queue in the MAC-hs PDU included in the PDU is multiplexed.
  • the maximum MAC-hs PDU is required to stop retransmission.
  • the data receiving method of the HSDPA according to the first embodiment of the present invention is as shown in FIG.
  • the UE demultiplexes the multiplexed PDU by de-cascading.
  • the network side forms a multiplexed PDU by cascading MAC-hs PDUs in at least two priority queues belonging to the same UE, and if the UE receives data from the network side as a multiplexed PDU, then Go to step 1102; if the UE does not receive the multiplexed PDU, but the MAC-hs PDU of the single priority queue, then go to step 1104.
  • the data received by the UE is a multiplexing: PDU, and when a HARQ process on the HARQ entity of the UE starts the first transmission, the reordering queues of the current time are recorded.
  • the UE is based on the "New Data Indicator" on the HS-SCCH.
  • the UE can pre- Excluding a batch of obsolete MAC-hs PDUs, the problem of incorrectly receiving outdated MAC-hs PDUs due to the same TSN sequence number does not occur.
  • the multiplexed PDUs are discarded. Proceed to step 1114.
  • step 1104 During the first transmission to the correct reception, if the moving distance of the receiving window of the reordering queue to which the MAC-hs PDU belongs is less than the predetermined value, the process proceeds to step 1103, where the TSN is further The MAC-hs PDU between the upper edge position of the receiving window and the lower edge position of the current window is discarded during the first transmission, and the reserved MAC-hs PDU is received and processed in a sliding window manner. This can further eliminate the obsolete MAC-hs PDU.
  • the predetermined value is the maximum value N of the TSN of the MAC-hs PDU, and the TSN of the MAC-hs PDU.
  • the lower edge position JV 2 (i) of the reception window of each reordering queue at that time is recorded.
  • RcvWindow_UpperEdge is the upper edge of the current receiving window. If a moving distance overrun event occurs in the reordering queue to which the MAC-hs PDU belongs, the moving distance of the receiving window is determined to be the maximum value of TSN, otherwise the moving distance of the receiving window is determined to be the maximum value of TSN.
  • step 1105 for the MAC-hs PDU in the multiplexed PDU, the ⁇ at the time of the first transmission is obtained from the record! And ff 2 at the time of correct reception, further determining whether the transmission sequence number TSN of the MAC-hs PDU is between ⁇ and ⁇ (modulo 64), and if yes, proceeding to step 1111; otherwise, proceeding to step 1106.
  • step 1106 the SN is outside the receiving window, and the MAC-hs PDU is buffered in the corresponding position in the reordering queue according to the SN. Proceed to step 1107.
  • step 1107 the receiving window is advanced, that is, RcvWindow-UpperEdge is updated to SN. And proceeds to step 1108.
  • step 1108 the MAC-hs PDU in the original receiving window with the TSN less than or equal to RcvWindow_Upper Edge-RECEIVEJWINDOW_SIZE is moved out of the reordering queue and output to the splitting unit, and then enters, while the receiving window is moved forward.
  • step 1109 it is further determined whether the next-expected-TSN is after the updated reception window, and if so, proceeds to step 1110; otherwise, proceeds to step 1114.
  • step 1111 it is determined whether the SN is smaller than next-expected- TSN or whether the MAC-hs PDU whose TSN is the SN has been received. If yes, the process proceeds to step 1112; otherwise, the process proceeds to step 1113.
  • step 1112 the MAC-hs PDU is discarded and likewise proceeds to step 1114.
  • step 1113 the MAC-hs PDU is buffered in the corresponding location in the reordering queue according to the SN, and the process proceeds to step 1114.
  • step 1114 it is determined whether there is already a MAC-hs PDU whose TSN is next-expected- TSN in the reordering queue. If yes, the process proceeds to step 1115; otherwise, the process ends.
  • step 1115 all the TSNs are sequentially added from the next-expected- TSN sequence to the first MAC-hs PDU that has not been received yet to the split unit, and then proceeds to step 1116.
  • step 1116 next-expected-TSN is set to the TSN of the first MAC-hs PDU that has not been received. End this process.
  • the value of the upper edge of the receiving window of each reordering queue is recorded at the time of the first transmission, and if the upper edge of the receiving window is equal to or exceeds the corresponding recording value due to the forward movement of the receiving window before the correct reception, it is considered The moving distance of the receiving window has exceeded the limit.
  • the UE can improve the accuracy of receiving the MAC-hs PDU, and reduce the erroneous collection of obsolete because the TSN number is the same.
  • the problem with the MAC-hs PDU is the problem with the MAC-hs PDU.
  • the MAC-hs PDU between the upper edge position of the receiving window and the lower edge position of the current window at the time of the first transmission is further discarded by the TSN.
  • the reserved MAC-hs PDU is received and processed in a sliding window manner. This can further eliminate obsolete MAC-hs PDUs, thereby ensuring that MAC-hs PDUs of multiple different priority queues multiplexed for transmission can be correctly received in the reordering queue of the receiving end.
  • the data retransmission method of the HSDPA according to the second embodiment of the present invention is: on the network side, when the MAC-hs PDU that meets the predetermined condition included in the multiplexed PDU is required to stop retransmission, if the MAC-hs meets the predetermined condition If there are more than one PDU, the retransmission of the multiplexed PDU is stopped when all MAC-hs PDUs that meet the predetermined condition are required to stop retransmission.
  • the MAC-hs PDU that meets the predetermined condition may be: all the MAC-hs PDUs included in the multiplexed PDU; or the MAC-hs PDU with the lowest priority corresponding to the priority queue; or, the sending of the corresponding priority queue The largest MAC-hs PDU of the window; or, the multiplexed PDU corresponds to the MAC-hs PDU of at least one priority queue specified in the priority queue, and the like.
  • the timing of stopping the retransmission of the multiplexed PDU is specified, and the retransmission of the multiplexed PDU is stopped at these occasions, thereby reducing the waste of resources, because at least one MAC-hs in the retransmitted multiplexed PDU is included.
  • the PDU is valid, on the other hand, the transmission performance is guaranteed, and multiple valid MAC-hs PDUs in the multiplexed PDU are not retransmitted together because one MAC-hs PDU is invalid. It will be readily understood by those skilled in the art that other provisions may be made for the timing of stopping the retransmission of the PDU by the network side to ensure the performance of the data transmission without departing from the spirit of the present invention.
  • the UE supporting HADPA includes a receiving module for receiving a PDU, a demultiplexing module, at least one reordering queue and a window monitoring module, and a sliding window receiving processing module, and further includes a splitting unit and a record. Module and judgment module.
  • the demultiplexing module is configured to: when the receiving module receives the multiplexed PDU multiplexed by the MAC-hs PDUs of the at least two priority queues on the network side, demultiplexing the multiplexed PDU to obtain at least one MAC-s PDU. At least one reordering queue for reordering MAC-hs PDUs.
  • the window monitoring module is configured to monitor, during the first transmission to the correct reception, whether the moving distance of the receiving window of the reordering queue to which the MAC-hs PDU belongs is greater than or equal to a predetermined value, and if yes, discard the MAC-hs PDU.
  • the predetermined value is the maximum value of the TSN.
  • the window monitoring module monitors whether the moving distance of the receiving window of the reordering queue to which the MAC-hs PDU belongs is smaller than the maximum value of the TSN by: when starting the first transmission, recording the upper edge position of the receiving window of each reordering queue at that time; Before the multiplexed PDU is correctly received, if the receiving window of each reordering queue moves forward and the upper edge thereof again equals or exceeds the corresponding recording position, the receiving window of the corresponding reordering queue has a moving distance overrun event; When the PDU is correctly received, if a moving distance overrun event occurs in the receiving window of the reordering queue to which the MAC-hs PDU belongs, it is determined that the moving distance of the receiving window is greater than or equal to the maximum value of the TSN, otherwise the receiving window is determined.
  • the moving distance is less than the maximum value of TSN.
  • A judges whether the SN of the MAC-hs PDU is within the receiving window of the reordering queue to which it belongs, and if yes, proceeds to step B, otherwise proceeds to step C;
  • B determines whether the SN is smaller than the expected TSN or the TSN is the MAC of the SN- The hs PDU has been received, if yes, the MAC-hs PDU is discarded and proceeds to step D, otherwise the MAC-hs PDU is buffered according to the SN to the corresponding location in the reordering queue to which it belongs and proceeds to step D;
  • C buffers the MAC-hs PDU to the corresponding location in the reordering queue to which it belongs according to the SN, advances the upper edge of the receiving window of the reordering queue to the SN, and sets the TSN to be less than or equal to the lower edge of the receiving window.
  • the MAC-hs PDU is removed from the reordering queue and output to the splitting unit, after which it is determined whether the desired TSN is smaller than the lower edge of the receiving window, and if so, the desired TSN is updated to the lower edge of the receiving window, and proceeds to step D;
  • the split unit sets the expected TSN to the TSN of the first MAC-hs PDU that has not been received.
  • operations smaller than, equal to or greater than are performed in the manner of modulo N.
  • the recording module is configured to record an upper edge position of the receiving window of each reordering queue at the time of the first transmission; and when the multiplexed PDU is correctly received, record a lower edge position of the receiving window of each reordering queue at the moment.
  • the judging module is configured to obtain, from the recording module, an upper edge position of the receiving window of the reordering queue to which the first transmission moment MAC-hs PDU belongs, "W1, and receive the reordering queue to which the MAC-hs PDU belongs at the correct receiving time.
  • the lower edge position W2 of the window when the moving distance of the receiving window of the reordering queue to which the MAC-hs PDU belongs is less than a predetermined value, if the TSN of the MAC-hs PDU is in the manner of modulo N from W1 to W2 The MAC-hs PDU is discarded, and the MAC-hs PDU is transferred to the sliding window receiving processing module.
  • the transport module for transmitting the PDU in the HARQ manner includes a determining module, configured to determine whether a MAC-hs PDU included in the multiplexed PDU that meets a predetermined condition is required to stop retransmission, if the transmitting module is instructed to stop retransmission of the multiplexed PDU.
  • the conditional MAC-hs PDU is: multiplex all MAC-hs PDUs included in the PDU; or the lowest-priority MAC-hs PDU corresponding to the priority queue; or the maximum MAC- of the transmission window corresponding to the priority queue- Hs PDU; Who multiplex PDU corresponding to the priority queue specified at least one priority queue If more than one MAC-hs PDU meets the predetermined condition, the judging module instructs the transmission module to stop retransmission of the multiplexed PDU when all the MAC-hs PDUs that meet the predetermined condition are required to stop retransmission.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et dispositif de transmission de données en mode d'accès par paquets sur une liaison descendante à haut débit utilisé pour transmettre de manière efficace des files d'attentes PDU MAC-hs multiplexées de niveaux de priorité différents. Dans cette invention, lorsque le dispositif utilisateur reçoit les PDU multiplexées avec succès, la validité de chaque PDU MAC-hs des PDU multiplexées est déterminée en fonction la situation de déplacement de la fenêtre de réception de chaque file de réordonnancement pendant la réception et la localisation de ladite fenêtre aux instants précédant et suivant la transmission. En outre, l'occasion d'arrêter la retransmission des PDU multiplexées côté réseau est définie. Lorsque l'on envoie une requête pour que la retransmission de la PDU MAC-hs correspondant aux conditions prédéfinies et contenue dans les PDU multiplexées s'arrête, la retransmission de la PDU multiplexée est arrêtée.
PCT/IB2007/000782 2006-06-02 2007-03-28 Procédé et dispositif d'émission-réception de données en mode d'accès par paquets sur une liaison descendante à haut débit WO2008007176A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200610084932.4 2006-06-02
CN 200610084932 CN100583824C (zh) 2006-06-02 2006-06-02 高速下行分组接入的数据收发方法及设备

Publications (1)

Publication Number Publication Date
WO2008007176A1 true WO2008007176A1 (fr) 2008-01-17

Family

ID=38866376

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/000782 WO2008007176A1 (fr) 2006-06-02 2007-03-28 Procédé et dispositif d'émission-réception de données en mode d'accès par paquets sur une liaison descendante à haut débit

Country Status (2)

Country Link
CN (1) CN100583824C (fr)
WO (1) WO2008007176A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115884114A (zh) * 2022-11-29 2023-03-31 四川启睿克科技有限公司 一种基于边缘计算的蓝牙mesh控制优化方法
EP4187821A4 (fr) * 2020-08-05 2023-09-06 Huawei Technologies Co., Ltd. Procédé et appareil de communication

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101820681B (zh) * 2009-02-27 2012-05-23 大唐移动通信设备有限公司 一种eUE的调度方法及装置
CN101908953A (zh) * 2009-06-02 2010-12-08 中兴通讯股份有限公司 一种对重传数据进行调度的方法及装置
CN102340535B (zh) * 2011-07-13 2014-04-02 华为技术有限公司 数据传输方法、设备和系统
US11277235B2 (en) 2015-11-23 2022-03-15 Qualcomm Incorporated Techniques for multiplexing or cascading control information and data within a transmission time interval

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040074141A (ko) * 2003-02-10 2004-08-23 삼성전자주식회사 무선 패킷 데이터 통신 시스템에서 패킷 데이터 유닛의유형 지정 방법
CN1561487A (zh) * 2001-04-25 2005-01-05 诺基亚公司 用于重定序和重发实体之间的层间控制的方法和系统
CN1667994A (zh) * 2004-03-12 2005-09-14 华为技术有限公司 一种防止状态变量异常更新的方法
CN1731771A (zh) * 2005-08-16 2006-02-08 中兴通讯股份有限公司 一种支持多载波下行高速数据分组接入的系统和方法
WO2006118831A2 (fr) * 2005-04-29 2006-11-09 Interdigital Technology Corporation Procedure de multiplexage par mac et de selection de tfc pour liaison montante amelioree

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1561487A (zh) * 2001-04-25 2005-01-05 诺基亚公司 用于重定序和重发实体之间的层间控制的方法和系统
KR20040074141A (ko) * 2003-02-10 2004-08-23 삼성전자주식회사 무선 패킷 데이터 통신 시스템에서 패킷 데이터 유닛의유형 지정 방법
CN1667994A (zh) * 2004-03-12 2005-09-14 华为技术有限公司 一种防止状态变量异常更新的方法
WO2006118831A2 (fr) * 2005-04-29 2006-11-09 Interdigital Technology Corporation Procedure de multiplexage par mac et de selection de tfc pour liaison montante amelioree
CN1731771A (zh) * 2005-08-16 2006-02-08 中兴通讯股份有限公司 一种支持多载波下行高速数据分组接入的系统和方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4187821A4 (fr) * 2020-08-05 2023-09-06 Huawei Technologies Co., Ltd. Procédé et appareil de communication
CN115884114A (zh) * 2022-11-29 2023-03-31 四川启睿克科技有限公司 一种基于边缘计算的蓝牙mesh控制优化方法

Also Published As

Publication number Publication date
CN100583824C (zh) 2010-01-20
CN101060477A (zh) 2007-10-24

Similar Documents

Publication Publication Date Title
EP1673895B1 (fr) Ordonnancement prioritaire au niveau controle d'acces au support pour des unites de donnees dans un flux de donnees
KR101084135B1 (ko) 무선 통신 시스템의 송수신 단에서의 상태 ｐｄｕ송수신방법
US8214711B2 (en) Next data indicator handling
JP5220022B2 (ja) 移動通信システムにおける無線リンク制御レイヤーのデータ送信方法及び装置
US8116250B2 (en) Medium access control discard notification
AU2005253495B2 (en) Transmitting and receiving control protocol data unit having processing time information
AU2004307900B2 (en) Updating next-expected TSN and receiver window to avoid stall conditions
US8285330B2 (en) HARQ reordering method for WCDMA enhanced uplink dedicated channel
US20120120920A1 (en) Method and wireless transmit/receive unit for supporting an enhanced uplink dedicated channel inter-node-b serving cell change
KR20030087882A (ko) 이동 통신 시스템에서 데이터 재전송 장치 및 방법
JP2003283596A (ja) 高速ダウンリンクパケット接続システムにおけるタイマーを利用した交錯状況回避システム及び方法
KR20030060026A (ko) 고속하향링크패킷접속（ｈｓｄｐａ）시스템에서재정리버퍼의 설정방법
US8300583B2 (en) Method for transmitting control information in a mobile communication system
WO2008025232A1 (fr) Procédé permettant la surveillance répétée d'une demande de répétition automatique hybride asynchrone d'une liaison montante améliorée
JP2004343765A (ja) 通信システムにおいてアップリンク伝送のためにデータをマップする方法
WO2007025454A1 (fr) Methode et systeme de retransmission de donnees avec abaissement de couche dans une communication sans fil
US20110019568A1 (en) Method and apparatus for transmitting and receiving data in mobile communication system
WO2008007176A1 (fr) Procédé et dispositif d'émission-réception de données en mode d'accès par paquets sur une liaison descendante à haut débit
KR101084136B1 (ko) 무선 통신 시스템의 송수신 단에서 상태정보를 포함하는ｐｄｕ를 송수신하는 방법
KR101583724B1 (ko) 통신 시스템 및 그의 패킷 송수신 방법
US9306707B2 (en) Method and apparatus for processing control information included in data unit in a mobile communication system
KR101432101B1 (ko) 실시간 서비스를 위한 수신 패킷 처리 방법 및 장치
WO2007090349A1 (fr) Procédé pour la transmission de données en files d'attente multiples et système correspondant

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07734108

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: RU

122 Ep: pct application non-entry in european phase

Ref document number: 07734108

Country of ref document: EP

Kind code of ref document: A1