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WO2007006225A1 - Procédé de traitement de données après la reconfiguration du paramètre de la fenêtre du récepteur dans une couche de commande de liaison radio - Google Patents

Procédé de traitement de données après la reconfiguration du paramètre de la fenêtre du récepteur dans une couche de commande de liaison radio Download PDF

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Publication number
WO2007006225A1
WO2007006225A1 PCT/CN2006/001621 CN2006001621W WO2007006225A1 WO 2007006225 A1 WO2007006225 A1 WO 2007006225A1 CN 2006001621 W CN2006001621 W CN 2006001621W WO 2007006225 A1 WO2007006225 A1 WO 2007006225A1
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WO
WIPO (PCT)
Prior art keywords
data
window
new window
processing method
buffer
Prior art date
Application number
PCT/CN2006/001621
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English (en)
Chinese (zh)
Inventor
Hao Hu
Xiaoxiao Zheng
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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 WO2007006225A1 publication Critical patent/WO2007006225A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/27—Evaluation or update of window size, e.g. using information derived from acknowledged [ACK] packets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/43—Assembling or disassembling of packets, e.g. segmentation and reassembly [SAR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters

Definitions

  • the present invention relates to a data transmission technique in a non-acknowledgment transmission mode of a radio link control layer (RLC), and more particularly to a data processing method in which a radio link control layer receiving end window parameter is reset in an unacknowledged transmission mode.
  • RLC radio link control layer
  • the Radio Link Control Layer is a sub-layer between the Medium Access Control Layer (MAC) and Layer 3. Its functions are mainly the transmission, division, reassembly and concatenation of user data, error correction and encryption, and so on.
  • the RLC entity supports three types of services, transparent mode service (TM), unacknowledged mode service (UM), and acknowledged mode service (AM).
  • TM transparent mode service
  • UM unacknowledged mode service
  • AM acknowledged mode service
  • the RLC sub-layer entity model is shown in Figure 1.
  • Figure 1 is a schematic diagram of the RLC sub-layer entity model.
  • the user equipment (UE) accesses the universal terrestrial radio access network (UTRAN) through the radio interface for communication.
  • UTRAN universal terrestrial radio access network
  • the TM sending entity and the TM receiving entity in the UE, the UM sending entity, and the UM receiving entity, and the AM entity respectively interact with the corresponding TM receiving entity and the TM sending entity in the U AR, the UM receiving entity, the UM sending entity, and the AM entity, and transmit data.
  • Transparent mode services are performed by independent transmit and receive transparent mode entities.
  • the transmitting entity receives the SDU from the upper layer and divides it into the appropriate RLC Protocol Data Unit (PDU) without any overhead, through the Broadcast Control Channel (BCCH), the Paging Control Channel (PCCH), the Shared Channel Control Channel (SHCCH), and the Common Control Channel.
  • a certain channel such as (CCCH:), Dedicated Traffic Channel (DTCH) is transmitted to the MAC sublayer.
  • the receiving entity receives the PDUs from the MAC sublayer, and then reassembles the PDUs into RLC Service Data Units (SDUs) for transmission to the upper layer.
  • SDU RLC Service Data Unit
  • Unacknowledged mode services are performed by independent transmit and receive unacknowledged mode entities.
  • the sending entity receives the SDU from the upper layer into the RLC PDU of the appropriate size or connects the different SDUs into one RLC PDU, attaches an RLC header and puts it into the sending buffer to send it to the MAC sublayer through a certain logical channel.
  • the receiving entity receives the PDU from the MAC sublayer through a certain logical channel, goes to the head and reassembles it into an SDU and sends it to the upper layer.
  • the acknowledgment mode service is done by a joint send and receive acknowledgment mode entity. Both types of PDU-control PDUs and service PDUs are sent and received.
  • the transmitting side entity receives the SDU from the upper layer to split or connect to the RLC service PDU, and attaches an RLC header to the transmitting and retransmitting buffer to send it to the MAC sublayer through one or two logical channels.
  • acknowledgment mode all transmitted service PDUs require confirmation by the peer entity to determine whether to retransmit or not.
  • the Control PDU is a status report and a reset request for the received PDU generated by the RLC entity itself.
  • the receiving side entity receives the PDU from the MAC sublayer, extracts the piggyback status information, puts it into the receiving buffer, waits for the complete PDU reassembly SDU to be sent to the upper layer, or sends an erroneous receiving acknowledgement through its transmitting side to request the peer entity to resend the PDU. .
  • MBMS Multimedia Broadcast/Multicast Service
  • WCDMA/GSM Global Standards Organization (3GPP) mainly uses the UM mode to complete the transmission between the RLC sublayers. Due to the type of service, MBMS requires the mobile network to provide a data source to send point-to-multipoint data services to multiple users at high speed. It has higher real-time requirements for UE reception and a lower correct rate, and does not need to be sent to the network. All data packets are - confirmed.
  • Multicast and broadcast are technologies that transfer data from one data source to multiple destinations.
  • a cell broadcast service (CBS: Cell Broadcast Service) allows low-bit rate data to be transmitted to all users through a cell shared broadcast channel, which belongs to a message type service.
  • CBS Cell Broadcast Service
  • IP multicast technology is only applicable to wired IP networks, not to mobile networks, because mobile networks have specific network structures, functional entities, and wireless interfaces, which are different from wired IP networks.
  • MBMS Multimedia Broadcast/Multicast Service
  • Point services realize network resource sharing, and improve the utilization of network resources, especially the utilization of air interface resources.
  • MBMS defined by 3GPP can not only realize plain text low-rate message class multicast and broadcast, but also realize multicast and broadcast of high-speed multimedia services, which undoubtedly conforms to the trend of future mobile data development.
  • a mobile network function entity is added to the mobile network.
  • the broadcast multicast service center BM-SC is an entry of the content provider for authorizing and initiating the MBMS bearer service in the mobile network, and according to the reservation. Time plans to deliver MBMS content.
  • functional entities such as User Equipment (UE), Terrestrial Radio Access Network (UTRAN), GERAN, SGSN, and GGSN are enhanced to add MBMS-related functions.
  • FIG. 2 is a schematic diagram of a wireless network structure supporting multicast/broadcast services.
  • the Broadcast/Multicast Service Center (BM-SC) is connected to the Gateway General Packet Radio Service (GPRS) Support Node (GGSN) via a Gmb interface or a Gi interface, and one BM-SC can be connected to multiple GGSNs.
  • GPRS General Packet Radio Service
  • the GGSN is connected to the Serving GPRS Support Node (SGSN) through the Gn/Gp interface, and one GGSN can be connected to multiple SGSNs; the SGSN can communicate with the Universal Mobile Telecommunications System (UMTS) terrestrial radio access network through the Iu interface ( UTRAN is connected, then UTRAN is connected to the communication terminal through the Uu interface, and the SGSN can also communicate with the global mobile through the Iu/Gb interface.
  • UMTS Universal Mobile Telecommunications System
  • UTRAN Universal Mobile Telecommunications System
  • UTRAN Enhanced Radio Access Network
  • GERAN Enhanced Radio Access Network
  • MBMS includes multicast mode and broadcast mode.
  • the difference between the multicast service and the broadcast service is only that: The multicast service only sends corresponding information to users who subscribe to certain information, and the broadcast service sends information to all users in the wireless network.
  • the multicast mode requires the user to subscribe to the corresponding multicast group, perform service activation, and generate corresponding accounting information. Because the multicast and broadcast modes differ in business requirements, their business processes are different.
  • the MBMS service has two modes when transmitting between the UTRAN and the UE: point-to-multipoint (PTM) mode and point-to-point (PTP) mode.
  • PTM point-to-multipoint
  • PTP point-to-point
  • the PTM mode transmits the same data through the MBMS point-to-multipoint traffic channel (MTCH), and all UEs that join the multicast service or are interested in the broadcast service can receive; the PTP mode transmits data through the dedicated transport channel (DTCH), only the corresponding A UE can receive it.
  • MTCH point-to-multipoint traffic channel
  • DTCH dedicated transport channel
  • the complete process for a user to receive an MBMS broadcast service includes:
  • Service announcement notifying the user of the relevant information of the MBMS service
  • MBMS notification (MBMS notification) The RNC notifies the user of the MBMS multicast data transmission;
  • the BM-SC is not ready to send data, and the load resources can be released.
  • the complete process for a user to receive an MBMS multicast service includes:
  • Session Start Joining, Session Start (Session Start); 4, the session begins (Session Start);
  • the multicast service Compared with the MBMS broadcast service, the multicast service adds a user subscription process, a joining process, and a leaving process.
  • the user subscription is the process of establishing the connection between the user and the service provider.
  • the joining process is a process in which the user informs the network that it is ready to receive the MBMS service. Leaving is the process by which the user is no longer a member of the MBMS multicast group.
  • Figure 3 is a schematic diagram of the transmission of two RLC peer entities in the MBMS service. among them:
  • the UE accesses the URTAN through the radio interface (Uu) for communication.
  • the UM Service Access Point (UM-SAP) sends the SDUs sent from the upper layer to the sender UM RLC entity.
  • the sending end of the UM RLC entity receives the SDU first buffered into the transmission buffer, and then splits into PDUs by dividing and concatenating, and then adds the RLC overhead to the PDU and sends it to the PDU through Uu.
  • the UM RLC entity of the receiving end of the UE receives the PDU function first, and then performs the DAR function processing on the receiving end buffer, and then removes the RLC overhead from the PDU and sends it to the reassembly buffer.
  • the area is cached and reassembled and sent to the upper layer through UM-SAP.
  • the DAR function is introduced into the RLC UM entity as the first operation after the receiver receives the PDU from the MAC sublayer and is only used for the transmission of the logical channel MTCH, MBMS service message.
  • the DAR function was introduced to ensure the reliability of the MBMS service. Since the UE can receive user data of the same MBMS service from different cells, the UE may be repeatedly and/or disordered when receiving the PDU. Therefore, in order to enable the receiving end to send the PDU to the receiving end buffer in a correct and non-repeating order to reassemble the SDU, the DAR function is introduced.
  • the principle of the DAR function is that the UE caches the received PDUs in order of sequence number by using a certain size window, that is, a buffer space of a fixed size fixed position. This window can be called a DAR window. These PDUs may or may not be contiguous, and buffering these PDUs in order of size may be used to wait for PDUs from other cells at a later time. The cached PDU is more complete, and the window can be used for copy detection.
  • the DAR window can be represented by the sequence number and window size of the PDU. As the sequence number of the received PDU increases, the upper bound of the window also moves forward. For example, the window size is 8, and the maximum number of the currently received PDU is 16, and the window can be It is represented by sequence numbers 9 to 16. The PDUs with sequence numbers 9 to 16 received thereafter should be written to the buffer area. If a PDU with sequence number 17 is received at this time, the window advances to the sequence number 10 to 17. Since the size of the buffer space itself is fixed, as the newly received PDU with a large sequence number is stored in the DAR window, the PDU that was originally near the lower boundary of the window may move out of the window.
  • the reference to the DAR function also introduces a series of parameters for the RLC UM entity.
  • VR (UDR) indicates the sequence number of the first PDU that was not sent to the receive reassembly buffer in order, that is, the sequence number of the next PDU that should be sent to the reassembly buffer in order.
  • VR "VR (UTT)" is used together with the timer to flag when the PDU should be forced to the receive reassembly buffer regardless of whether there are any unreceived PDUs.
  • VR indicates the value of the received sequence with the largest sequence number in the PDU of the window.
  • the DAR function introduces a timer "Timer JDAR” for terminating the state in which no PDU is sent to the receive reassembly buffer for a long time.
  • sequence number SN ⁇ VR (UDR) or the same sequence number of PDUs has been cached, the newly received PDU is deleted; otherwise, the newly received PDU is stored in the buffer area by the sequence number.
  • VR is updated to x+1, where X is the sequence number of the PDU with the highest sequence number among the PDUs received into the reassembly buffer.
  • the function of resetting the RLC parameters by the upper layer does not describe the case when the parameter DAR_Window_Size is reset by the upper layer.
  • the service needs to be reconfigured, and the size of the DAR receiving window also needs to be adjusted.
  • the change in window size affects the speed at which the received PDU reassembles the SDU, so the receive window is also adjusted to accommodate the adjusted downstream rate.
  • the new window may be smaller than the original window, causing some PDUs to change outside the window, or may cause some PDUs to change from outside the window to the window due to the larger window.
  • the operating protocols for these PDUs are not described. Since the protocol is not clearly stated, these PDUs may be left in the cache, neither transferred to the next accepted reassembly cache, or deleted in time until the buffer overflows, causing an error. Or the cache deletes the PDUs that should not be deleted, so that the SDUs that should be reorganized cannot be reorganized in the next function.
  • the main object of the present invention is to provide a data processing method after the receiving end window parameter of the radio link control layer is reset, and reduce the receiving error that may occur after the receiving end of the RLC layer changes the window parameter.
  • the present invention provides a data processing method after the receiving end window parameter of the radio link control layer is reset.
  • the # text is processed as follows:
  • step C Perform data processing on the data obtained in step B.
  • the method for determining a new window boundary may be:
  • the upper boundary of the original window is determined as the upper boundary of the new window, and the upper boundary of the new window is determined by the upper boundary and the new window.
  • the receiving buffer size window size parameter is set to the upper layer
  • the data obtained by the step B is changed from the original window to the original window: the data belonging to the original window and not included in the new window is acquired.
  • the method for acquiring data belonging to the original window without being included in the new window may be: comparing the sequence number of the data in the original window with the upper and lower boundaries of the new window, determining which data falls outside the new window, and obtaining the drop Data outside the new window.
  • step C The method of data processing described in step C may be:
  • the step C may be: deleting or completely transmitting the data acquired in step B to the data recombination buffer area; Or after the data acquired in step B is cached for a predetermined time, all of them are deleted or all sent to the data recombination buffer.
  • the step C described may also be:
  • step B It is judged whether the data acquired in step B has continuous serial number data, and if so, the continuous data is sent to the data recombination buffer area, and the discontinuous data is deleted; otherwise, all the discontinuous data is deleted.
  • the step C may be specifically as follows:
  • step B Determining whether the data acquired in step B has continuous serial number data, and if so, the continuous data is buffered for a predetermined time and then sent to the data recombination buffer area, and the discontinuous data is directly deleted; otherwise, all the data is directly deleted or cached. Delete after time;
  • step B determines whether the data acquired in step B has continuous serial number data, if yes, send the continuous data directly to the data reorganization buffer, and delete the discontinuous data after a predetermined time; otherwise, delete or cache all the data directly. Delete after scheduled time.
  • the step C may further include: buffering the discontinuous data for a predetermined time, and determining, according to the predetermined time, whether the newly received data sequence number is consecutive with the cached data, and if so, the data in the cache that is continuous with the newly received data and The newly received data is sent to the data reassembly buffer; otherwise, the cached discontinuous data is deleted.
  • the predetermined time for buffering the discontinuous data may be set to at least the time required to receive one data.
  • the step C may further include: recording the highest data sequence number of the deleted data or the data sent to the data recombination buffer area, and determining whether the serial number of the consecutive multiple data in the new window is consecutive with the recorded data serial number, if any, The serial number consecutive data in the new window is sent to the data reorganization buffer.
  • the method may further comprise: D. modifying some or all of the receiving end window related parameters.
  • the step D may include: Dl. If the new window has continuous data to be sent to the data recombination buffer, the parameter related to the receiving end window: the state variable VR (UDR) is updated to be the one with the largest serial number in the data sent to the data reassembly buffer;
  • the check sequence number is equal to the parameters of the receiving end window: Whether the data of VR ( UDT ) is deleted or sent to the data recombination buffer area, if yes, restart the timer, and reset VR ( UDT ) to the highest data in the current window The serial number value; otherwise, VR ( UDT ) is not modified.
  • the data obtained by the step B to change the new window relative to the original window is: acquiring data belonging to the new window but not included in the original window.
  • the method for acquiring data belonging to a new window and not included in the original window may be: comparing the serial number of the data in the new window with the upper and lower boundaries of the original window, determining which data falls outside the original window, and acquiring the original window External data.
  • the step C may be: deleting the data acquired in step B.
  • the data processing method of the wireless link control layer receiving window parameter of the present invention is reset, first determining the upper and lower boundaries of the new window according to the new window size parameter; The upper and lower boundaries acquire data of a new window relative to the original window; finally, the acquired data is processed. That is to say, the present invention processes the original window or the new window portion data after the receiving window parameter is reset, so that the buffer overflow phenomenon does not occur, and the data loss can be reduced. Therefore, the present invention ensures that the receiving end can still receive data with a higher correct rate under varying physical transmission conditions.
  • Figure 1 is a schematic diagram of an RLC sub-layer entity model
  • 2 is a schematic structural diagram of a wireless network supporting multicast/broadcast services
  • Figure 3 is a schematic diagram of the transmission of two RLC peer entities after the introduction of the DAR function in the MBMS service;
  • Figure 5a is a schematic diagram showing an example in which the DAR window is reduced
  • Figure 5b is a schematic diagram showing an example in which the DAR window is expanded
  • FIG. 6 is a flow chart showing the data processing after the DAR window is reset in the second preferred embodiment of the present invention. Mode for carrying out the invention
  • the data processing method of the two wireless link control layer receiving window parameters of the present invention is reset, first determining the upper and lower boundaries of the new window according to the new window size parameter; and then acquiring according to the upper and lower boundaries of the new window
  • the data of the new window changes relative to the original window; finally, the data obtained is processed.
  • window size parameter is reset: Smaller or larger.
  • data can be deleted or sent to the reassembly buffer or other data that is removed from the receive buffer, and then Other window-related parameters are modified accordingly. If the window size parameter becomes larger, the data in the original window that is not included in the new window is included, and the deletion processing can be performed.
  • Step 401 Receive a newly configured window size parameter sent by the upper layer. As the downlink transmission rate decreases or increases, the upper layer will reduce or increase the DAR window accordingly to accommodate the adjusted rate.
  • Step 402 according to the window size parameter, determine the upper and lower boundaries of the new window, and determine the window size change, if the window size does not change, then do not process, directly end the process; if the window becomes larger, step 403 is performed; If the window becomes smaller, step 405 is performed.
  • the method for determining the upper and lower boundaries of the new window is: Determine the upper boundary of the original window as the upper boundary of the new window, and use the upper boundary and the new window size parameter to determine the lower boundary of the new window.
  • Figure 5a is a schematic diagram of an example where the DAR window is reduced.
  • the solid line indicates the original window, and the dotted line indicates the new window;
  • All, A9, A8, A7, A6, and A4 represent the PDUs with the sequence numbers 11, 9, 8, 7, 6, and 4, respectively.
  • Figure 5b is a schematic diagram of an example in which the DAR window is expanded.
  • the solid line indicates the original window, and the dotted line indicates the new window; All, A9, A8, and A4 indicate the PDUs with the sequence numbers 11, 9, 8, and 4, respectively.
  • Step 403 Determine whether the new window contains data that is not included in the original window; if yes, execute step 404; otherwise, end the process.
  • the specific judgment method may be: the data sequence number in the new window and the upper and lower boundaries of the original window For comparison, if the data sequence number falls outside the original window, the new window contains data that is not included in the original window.
  • Step 404 Obtain data not included in the original window in the new window, and delete the data to end the process.
  • PDUA4 is included in the new window due to the larger window size, and A4 is not included in the original window. At this time, A4 will be deleted. This is because, in actual applications, there should be no PDUs outside the window. If there is, the PDU is considered to be incorrectly received. Therefore, in this step, it is deleted.
  • Step 405 Acquire PDUs that belong to the original window but are not included in the new window, and delete or all of the PDUs are sent to the reassembly buffer.
  • the acquired PDU may also be cached for a predetermined period of time, such as a TTI time, and then all of the data is deleted or sent to the reassembly buffer.
  • This embodiment considers that the PDU outside the new window may be considered as a PDU that is not used due to parameter reset, or ignores the short-lived SDU interruption that may occur, and at the same time, in order to simplify the operation of the UE receiving end, clarify these The PDUs outside the new window are deleted in time.
  • PDUs outside the new window can also be considered as useful PDUs. In this case, they are sent to the reassembly buffer for reorganization of the SDU.
  • Step 406 Record the highest sequence number X of the deleted PDU or the PDU sent to the reassembly buffer.
  • Step 407 Determine whether there are multiple PDUs in the new window that are consecutive with X, that is, whether there is a consecutive PDU of X+1 - X+n in the new window P, where n is the number of consecutive PDUs in the new window, if yes Then, go to step 408; otherwise, go to step 409.
  • Step 408 Send consecutive PDUs of X+1 ⁇ X+n in the new window to the reassembly buffer.
  • step 409 the window related parameters are modified, and the process ends.
  • this step can include two processes:
  • Figure 6 is a flow chart showing the data processing after the DAR window is reset in the second preferred embodiment of the present invention. The process includes the following steps:
  • Step 601 Receive a window size parameter of a new configuration sent by the upper layer.
  • Step 602 according to the window size parameter, determine the upper and lower boundaries of the new window, and determine the window size change, if the window size does not change, then do not process, directly end the process; if the window becomes larger, step 603 is performed; If the window becomes smaller, step 605 is performed.
  • Step 603 Determine whether the new window contains data that is not included in the original window; if yes, execute step 604; otherwise, end the process.
  • the specific judgment method is exactly the same as step 403 in the flow shown in FIG. 4, and details are not described herein again.
  • Step 604 Obtain data not included in the original window in the new window, and delete the data to end the process.
  • step 605 it is determined whether the PDUs belonging to the original window outside the new window are continuous. If yes, step 607 is performed; otherwise, step 606 is performed.
  • Step 606 Delete the discontinuous PDUs belonging to the original window outside the new window, and record the highest sequence number X of the deleted PDU, and perform step 609.
  • the PDU to be deleted may be cached for a predetermined time, and the time may be set to at least the time required to receive a PDU, such as a TTI.
  • a PDU such as a TTI.
  • Step 607 Send consecutive PDUs outside the new window to the reassembly buffer, and delete the discontinuous PDUs.
  • the predetermined time expires, it can be further determined whether the newly received PDU is continuous with the PDU to be deleted, and if so, the newly received PDU and one or more contiguous PDUs thereof are sent to the reorganization. Buffer, if not, delete the cached PDU.
  • the consecutive PDUs outside the new window are cached for a predetermined time, for example, after a TTI, and then sent to the reassembly buffer area, and the discontinuous PDUs are directly deleted.
  • a predetermined time for example, after a TTI
  • the discontinuous PDUs are directly deleted.
  • Step 608 Record the highest sequence number x of the PDU sent to the reassembly buffer.
  • Step 609 Determine whether there are consecutive PDUs of X+l ⁇ X+n in the new window. If yes, go to step 610; otherwise, go to step 611.
  • Step 610 Send consecutive PDUs of X+1 ⁇ X+n in the new window to the reassembly buffer. Step 611, modifying the window related parameters, and ending the process.
  • the method for modifying the window related parameters in this step is exactly the same as the step 409 in the embodiment shown in FIG. 4, and is not repeated here.
  • the data processing after the window size is increased is included.
  • the window size becomes large, and when the appearance window size becomes large, only the data not included in the original window in the new window is deleted. Although this situation does not occur frequently, it can also achieve the purpose of reducing some possible reception errors.
  • the data processing method after the receiving end window parameter of the radio link control layer of the present invention is reset ensures that the receiving end can still have a higher correct rate under changing physical transmission conditions. Receive data.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Quand le paramètre de la taille de la fenêtre du tampon du récepteur est reconfigurée, deux procédés de traitement de données après reconfiguration du paramètre de la fenêtre du récepteur dans la couche de commande de liaison radio effectuent : A. détermination des bordures supérieures et inférieures de la nouvelle fenêtre selon le paramètre de la taille de la nouvelle fenêtre ; B. obtention de la donnée de la nouvelle fenêtre modifiée correspondant à la fenêtre originale ; C. traitement de la donnée obtenue par l’étape B. L’application la présente invention peut réduire la perte de données inutiles, s’assurer que le récepteur continue de recevoir les données dans une haute exactitude dans le cadre de la condition physique modifiée.
PCT/CN2006/001621 2005-07-08 2006-07-10 Procédé de traitement de données après la reconfiguration du paramètre de la fenêtre du récepteur dans une couche de commande de liaison radio WO2007006225A1 (fr)

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CNA2005100841027A CN1794694A (zh) 2005-07-08 2005-07-08 无线链路控制层接收端窗口参数被重置后的数据处理方法

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