WO2007045172A1 - Procede de transmission de donnees sans fil, systeme de transmission, systeme de reception - Google Patents

Procede de transmission de donnees sans fil, systeme de transmission, systeme de reception Download PDF

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Publication number
WO2007045172A1
WO2007045172A1 PCT/CN2006/002758 CN2006002758W WO2007045172A1 WO 2007045172 A1 WO2007045172 A1 WO 2007045172A1 CN 2006002758 W CN2006002758 W CN 2006002758W WO 2007045172 A1 WO2007045172 A1 WO 2007045172A1
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WO
WIPO (PCT)
Prior art keywords
data
layer
module
receiving
rlc layer
Prior art date
Application number
PCT/CN2006/002758
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English (en)
French (fr)
Inventor
Yuzhong Wu
Jinlin Zhang
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 WO2007045172A1 publication Critical patent/WO2007045172A1/zh
Priority to US12/104,913 priority Critical patent/US8467302B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/1607Details of the supervisory signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867Arrangements specially adapted for the transmitter end
    • H04L1/188Time-out mechanisms

Definitions

  • the present invention relates to the field of wireless data transmission technologies, and in particular, to a wireless link control.
  • RLC Radio Link Control
  • the uplink RLC layer data is sent from the user terminal equipment (UE) side to the terrestrial radio access network (UTRAN) side as an example, and the RLC layer data sent by the UE side RLC layer is passed through the media access control (MAC) layer of the UE, After the UE physical layer and the UTRAN side base station (NB) physical layer, and the MAC layer of the UTRAN side radio network controller (RNC) are transmitted to the RLC layer (RNC - RLC) of the RC, the RNC-LCC layer replies according to the current receiving status.
  • the data reception status message is sent to the UE-RCC layer.
  • the message usually indicates whether the current data is correctly received.
  • the UE-LCC layer can determine whether to transmit subsequent new data or retransmit the current data according to the message to ensure that the data is not received.
  • the correctly received data is retransmitted to achieve the bit error rate requirement.
  • the prior art wireless data transmission method includes the following steps:
  • Steps 101 to 107 After receiving the high-level data packet from the upper layer of the RLC layer, the UE-RCC layer module adds the control information related to the RLC to the packet and encapsulates it into the RLC layer packet X, and caches the packet X; - the RLC layer module performs MAC layer processing on the data packet X through the UE-MAC layer module, and then transmits the data to the UE physical layer module; the UE physical layer module pair The data including the data packet X is subjected to transmission processing such as channel coding, spreading, and modulation; the UE physical layer module transmits the data including the data packet X to the NB physical layer module; and the NB physical layer module solves the received data including the data packet X.
  • transmission processing such as channel coding, spreading, and modulation
  • the NB physical layer module performs processing of the MAC layer through the RLC-MAC layer module, and then transmits the data packet X to the RNC-RCC layer module; the RNC-RCC layer module determines the data. Whether the packet X is received correctly. If yes, the packet X is decapsulated, and the high-level data packet is extracted and sent to the upper layer of the RLC layer, and the RLC layer control message Y1 indicating that the correct RLC layer is received is generated, and step 108 and subsequent steps are performed. Otherwise, , generating an RLC layer control message Y0 indicating that the reception is incorrect, and performing step 108 and subsequent steps. Step 107 in Fig. 1 is exemplified by the case where the reception is incorrect.
  • Steps 108 to 113 The RNC-RLC module sends the control message Y1 or Y0 to the NB physical layer module through the RC-MAC layer module for MAC layer processing; the NB physical layer module sends the control packet Y1 or Y0 to transmit processing; NB The physical layer module transmits a control message Y1 or Y0 to the UE physical layer module; the UE physical layer module receives the control message Y1 or Y0; the UE physical layer module transmits the control message Y1 or Y0 to the UE through the UE-MAC layer module.
  • - RLC layer module; UE - RLC layer module parses control message Y1 or Y0, and knows whether packet X transmission is correct.
  • Step 108 to 113 in Fig. 1 take the case of controlling the message ⁇ 0 as an example.
  • Steps 114 to 119 The UE-RCC layer module reads the data packet X from the buffer area and performs MAC layer processing on the data packet X through the UE-MAC layer module, and then transmits the data to the UE physical layer module; the UE physical layer module pair includes data.
  • the data of the packet X is sent for processing; the physical layer module of the UE transmits the data including the data packet X to the physical layer module of the B; the physical layer module of the B receives the data including the data packet X; and the NB physical layer module passes the processed data.
  • the RLC-MAC layer module After the RLC-MAC layer module performs MAC layer processing, it transmits the data packet X to the RNC-RCC layer module; the RNC-RCC layer module determines whether the reception is correct, and if so, decapsulates the data packet X and extracts the high-level data packet from the The RLC layer is configured to perform the step S210 and the subsequent steps. Step 119 in Figure 1 is taken as an example of receiving the correct situation.
  • Steps 120 ⁇ 125 The RNC - RLC module sends the control layer Y1 or Y0 to the NB physical layer module after the MAC layer processing is performed by the RNC-MAC layer module; the NB physical layer module performs the transmission processing on the control message Y1 or Y0;
  • the B physical layer module transmits a control message Y1 or Y0 to the UE physical layer module; the UE physical layer module receives the control message Y1 or Y0; the UE physical layer module transmits the control message Y1 or Y0 through the UE-MAC layer module to UE - RLC layer module;
  • UE - RLC layer module parses control message Y1 or Y0, and knows whether packet X transmission is correct.
  • Steps 120 to 125 in Fig. 1 take the case of controlling the message Y1 as an example.
  • the UE-RCC layer module receives the indication that the RNC-RCC layer module receives the correct control message Y1 and discards its buffered current data packet to send subsequent new RLC layer data.
  • the transmitting side can determine whether the current data should be retransmitted or the new data is transmitted only after receiving the data reception status message replied by the RLC layer on the receiving side.
  • the data reception condition message is generated by the RNC-RLC layer and transmitted to the UE side through the physical layer, because the physical layer needs to be Corresponding processing of the data makes the reply speed of the data receiving message extremely slow, and finally causes the data transmission speed of the RLC layer to be slow.
  • an object of the present invention is to provide a wireless data transmission method, a transmission system, and a receiving system, which can improve the data transmission speed of the RLC layer.
  • the present invention provides a wireless data transmission method, which is applicable to RLC layer data transmission between a UE side and a UTRAN side, and a transmitting side buffers current RLC layer data, where the method includes:
  • step B the transmitting side sends the current RLC layer data to the receiving side, when the receiving side physical layer determines the data receiving error, step B is performed;
  • the receiving side physical layer generates and replies to the data receiving situation message indicating that the receiving error is sent to the sending side, and the transmitting side transmits the current RLC layer data of the buffer to the receiving side.
  • the sending side determines whether the resending of the current RLC layer data reaches a preset maximum number of retransmissions, if And discarding the cached current RLC layer data or initiating a reset process; otherwise, performing the step of transmitting the current RLC layer data of the transmit side buffer to the receiving side.
  • the step A further includes: when the receiving side physical layer determines that the current receiving is correct, performing step C:
  • the receiving side physical layer controls the MAC layer to transmit the current RLC layer data to the receiving side RLC layer, generates and replies to receive the correct data receiving status message to the transmitting side, and the transmitting side discards the buffered current RLC layer data.
  • the method further includes: the receiving side physical layer determines that the current receiving is No, if yes, perform step C, otherwise perform step B.
  • the current RLC layer data may be buffered by the sending side RLC layer.
  • the step B is: the physical layer of the receiving side generates and replies to the data receiving situation that the receiving data is received to the transmitting side, and the physical layer of the transmitting side generates the corresponding RLC layer control message according to the data receiving situation message, and passes the MAC.
  • the layer is sent to the RLC layer, and the transmitting side RLC layer transmits the cached current RLC layer data to the receiving side physical layer according to the RLC layer control message.
  • the step C is: the receiving side physical layer transmits the current RLC layer through the receiving side MAC layer. The data is sent to the RLC layer on the receiving side, and the packet is received and returned to receive the correct data reception status.
  • the physical layer on the transmitting side generates a corresponding RLC layer control message according to the data reception status message, and sends the corresponding RLC layer control message to the transmitting side RLC layer through the MAC layer.
  • the RLC layer on the transmitting side discards the cached current RLC layer data according to the RLC layer control message.
  • the current RLC layer data may also be buffered by the sending side MAC layer.
  • the step B is: the physical layer of the receiving side generates and replies to the data layer that receives the incorrect data reception status to the physical layer of the transmitting side, and the physical layer of the transmitting side generates the corresponding MAC layer control message according to the data receiving status message, and Sending to the sending side MAC layer, the transmitting side MAC layer transmits the current RLC layer data to the receiving side physical layer according to the MAC layer control message;
  • the step C is: the receiving side physical layer transmits the current RLC layer through the receiving side MAC layer The data is sent to the RLC layer on the receiving side, and the packet is generated and replied to receive the correct data reception status message to the physical layer of the transmitting side.
  • the physical layer of the transmitting side generates a corresponding MAC layer control message according to the data receiving status message, and sends the message to the sending side.
  • the MAC layer, the transmitting side MAC layer discards the cached current RLC layer data according to the MAC layer control message.
  • the receiving side physical layer receives the data and determines whether the data is received correctly according to the validity bit in the data.
  • the transmitting side is a UE side
  • the transmitting side RLC layer is a UE side RLC layer.
  • the transmitting side MAC layer is the MAC layer of the UE
  • the transmitting side physical layer is the UE physical layer
  • the receiving side is the UTRAN side
  • the receiving side RLC layer is the RLC layer of the radio network controller RNC
  • the receiving The side MAC layer is the MAC layer of the RNC
  • the receiving side physical layer is the base layer NB physical layer;
  • the transmitting side is a UTRAN side
  • the transmitting side RLC layer is an RNC RLC layer
  • the transmitting side MAC layer is a RNC MAC layer
  • the transmitting side physical layer is an NB physical layer
  • the receiving side is the UE side
  • the receiving side RLC layer is the RLC layer of the UE
  • the receiving side MAC layer is the MAC layer of the UE
  • the receiving side physical layer is the UE physical layer.
  • the present invention also provides a transmitting system, where the transmitting system includes: a data cache module and a physical layer module;
  • the data cache module is configured to cache RLC layer data that needs to be sent;
  • the physical layer module is configured to obtain the RLC layer data in the data caching module, and process the data to the receiving side, and according to the data receiving situation message indicating the RLC layer data receiving error from the receiving side, Sending the RLC layer data.
  • the physical layer module is further configured to discard the RLC layer data in the data cache module according to the RLC layer data receiving the correct data reception status message from the receiving side.
  • the sending system may further include: a MAC layer module including the data cache module, configured to receive the RLC layer data packet, buffer the RLC layer data packet into the data cache module, and perform MAC layer processing on the RLC layer data packet.
  • a MAC layer module including the data cache module configured to receive the RLC layer data packet, buffer the RLC layer data packet into the data cache module, and perform MAC layer processing on the RLC layer data packet.
  • the data including the RLC layer data packet is sent to the physical layer module, and according to the data receiving status message receiving the error from the physical layer module, the buffered corresponding RLC layer data packet is re-read and processed in the MAC layer. And then sent to the physical layer module; and according to the data receiving condition message indicating that the data is received from the physical layer module, the corresponding RLC layer in the data buffer module is discarded.
  • the package includes: a MAC layer module including the data cache module, configured to receive the RLC layer data packet, buffer the RLC layer data packet into the data cache module, and perform
  • the physical layer module receives the data including the RLC layer data packet from the receiving MAC layer module, sends the data to the receiving side, and parses the received data receiving error message from the receiving side to indicate the data reception error or the correct data, to the MAC layer.
  • the module correspondingly transmits a data reception error message or a correct data reception status message that can be recognized, and re-receives data including the RLC layer data packet from the MAC layer module, and transmits the data to the receiving side.
  • the system further includes: an RLC layer module including the data cache module, and a MAC layer module;
  • the RLC layer module is configured to: after processing the RLC layer data in the data buffer module, send the RLC layer data packet to the MAC layer, and receive an error data receiving situation message according to the representation data from the MAC layer module, The buffered RLC layer data is processed and sent to the MAC layer module; and the correct data reception status message is received according to the representation data from the MAC layer module, and the RLC layer data in the data cache module is discarded;
  • the MAC layer is configured to perform MAC layer processing on the received RLC data packet, and then send the data including the RLC layer data packet to the physical layer module, and perform MAC layer processing on the packet indicating the data reception status from the physical layer module, and then forward the packet to the RLC.
  • Layer module
  • the physical layer module receives the data including the RLC layer data packet from the MAC layer module, sends the data to the receiving side, and receives an error or a correct data receiving situation message according to the received representation data, to the MAC layer module. Correspondingly transmitting a message indicating that the data reception error or the correct data reception condition is received, and re-receiving the data including the RLC layer data packet from the MAC layer module, and transmitting the data to the receiving side.
  • the physical layer module, the MAC layer module, and the RLC layer module are respectively a physical layer module, a MAC layer module, and an RLC layer module of the UE; or the physical layer module is a physical layer module of the NB.
  • the MAC layer module and the RLC layer module are the MAC layer module and the RLC layer module of the RNC.
  • the invention also discloses a receiving system, which comprises: a physical layer module,
  • the physical layer module is configured to: transmit and receive correct RLC layer data to the RLC layer through the MAC layer, and receive RLC layer data from the sending side, determine whether the RLC layer data transmission is correct, and receive, according to the determined RLC layer data. As a result of the error, a data reception status message indicating a reception error is returned to the transmitting side;
  • the RLC layer module is configured to receive RLC layer data from the physical layer module through the MAC layer.
  • the physical layer module is further configured to: receive a correct result according to the determined RLC layer data, and return a message indicating that the correct data reception status is received to the transmitting side.
  • the physical layer module, the MAC layer module, and the RLC layer module are respectively a physical layer module, a MAC layer module, and an RLC layer module of the UE; or the physical layer module is a physical layer module of B, and the MAC layer is The module and the RLC layer module are the MAC layer module and the RLC layer module of the RNC.
  • FIG. 1 is a prior art wireless data transmission method
  • FIG. 2 is a schematic structural diagram of a transmitting side of the present invention
  • FIG. 3 is a schematic structural diagram of a data buffer module of a transmitting side set in a physical layer module according to the present invention
  • FIG. 4 is a schematic structural diagram of a data buffer module of a transmitting side set in an RLC layer module according to the present invention.
  • FIG. 5 is a schematic structural diagram of a receiving side of the present invention
  • FIG. 6 is a general flowchart of a wireless data transmission method according to the present invention
  • FIG. 8 is a method of wireless data transmission according to Embodiment 2 of the present invention.
  • BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be further described in detail below with reference to the accompanying drawings.
  • the core idea of the present invention is: The control layer that confirms the current data reception condition is returned by the physical layer on the receiving side, and the recovery speed of the RLC layer data reception message is accelerated, thereby improving the data transmission speed of the RLC layer.
  • the composition of the transmitting side is as shown in FIG.
  • the sending side includes a physical layer module and a data cache module. among them:
  • the data cache module is configured to cache RLC layer data that needs to be sent;
  • the physical layer module is configured to obtain the RLC layer data in the data caching module, and process the data to the receiving side, and according to the data receiving situation message indicating the RLC layer data receiving error from the receiving side, Data including the RLC layer data is transmitted.
  • the physical layer module may be further configured to discard the data in the data cache module according to the received data reception status message from the receiving side indicating that the RLC layer data is received.
  • the data cache module can be set separately, or it can be set in the MAC layer module as shown in Figure 3, or in the RLC layer module as shown in Figure 4.
  • the MAC layer module is configured to receive the RLC layer data packet from the RLC layer module, and cache the RLC layer data packet into the data cache module, and the number of the RLC layer is After the packet is processed by the MAC layer, the data including the RLC layer data packet is sent to the physical layer module, and the received data packet of the error is received according to the data received from the physical layer module, and the buffered corresponding RLC layer data packet is re-read. And sending the MAC layer processing to the physical layer module; and receiving the error data receiving condition message according to the data from the physical layer module, discarding the corresponding RLC layer data packet in the data cache module;
  • the physical layer module obtains data to receive data from the MAC layer module including the RLC layer data packet, and sends the data to the receiving side.
  • the physical layer module is further configured to parse the received data receiving error or correct data receiving status. Transmitting, to the MAC layer module, sending, to the MAC layer module, a data reception error message or a correct data reception status message, that is, a MAC layer control message, and re-receiving data from the MAC layer module including the RLC layer data packet. , send it to the receiving side.
  • the RLC layer module is configured to process the RLC layer data in the data buffer module, send the RLC layer data packet to the MAC layer module, and receive an error data reception report according to the representation data from the MAC layer module. And re-sending the cached RLC layer data to the MAC layer module; and receiving the correct data reception status message according to the representation data from the MAC layer module, discarding the RLC layer data in the data cache module;
  • the MAC layer is configured to perform MAC layer processing on the received RLC data packet, and then send the data including the RLC layer data packet to the physical layer module, and perform MAC layer processing on the packet indicating the data reception status from the physical layer module, and then forward the packet to the RLC.
  • Layer module
  • the physical layer module is configured to receive the data including the RLC layer data packet from the MAC layer module, send it to the receiving side, and receive an error or a correct data receiving situation message according to the received representation data, that is, the RLC layer control. Transmitting, by the MAC layer module, sending, to the RLC layer module, a data reception error or a correct data reception status message that can be identified by the RLC layer module, and re-receiving the data including the RLC layer from the MAC layer module. The data of the packet is sent to the receiving side.
  • the maximum number of retransmissions may be preset in the MAC layer module or the RLC layer module including the data buffer module, and the MAC layer module or the RLC is received after receiving the data reception status message indicating the data reception error.
  • the layer module resends the RLC layer data in the data cache module when it is determined that the retransmission does not reach the maximum number of retransmissions, and discards the cached data after determining that the maximum number of retransmissions is reached.
  • the RLC layer module may also initiate a reset process, where the reset process includes: the RLC layer module sends a reset (RESET) message to the RLC layer module on the receiving side, and the receiving side RLC layer module receives the RESET. After the message, the reset response (RESET_ACK) is returned to the sender, thus completing the reset process.
  • a service release process may be initiated.
  • the transmitting side may be a UE, and the receiving side is a terrestrial radio access network side.
  • the physical layer module, the MAC layer module, and the RLC layer module are respectively a physical layer module, a MAC layer module, and an RLC layer module of the UE.
  • the transmitting side may also be a terrestrial radio access network side, and the receiving side may be a UE side.
  • the physical layer module is the physical layer module of the NB
  • the MAC layer module is the MAC layer module of the RLC layer
  • the RLC layer module is the RLC layer module of the RNC.
  • the MAC layer module of the NB physical layer module phase RNC
  • composition of the receiving side of the present invention is as shown in FIG. 5, and includes a physical layer module, a MAC layer module, and an RLC layer module. among them:
  • the physical layer module is configured to receive and receive the correct RLC layer data by using the MAC layer module, and receive the RLC layer data from the sending side, and return a representation to the sending side according to the determined result of receiving the error of the RLC layer data. Receive the wrong data reception situation; ⁇
  • the physical layer module transmitting the correct RLC layer data to the RLC layer module by using the MAC layer module includes: the physical layer module receives the data including the RLC layer data packet from the sending side, and after performing the receiving process and determining that the receiving is correct, The data including the RLC layer data packet is sent to the MAC layer module, and after the MAC layer module performs MAC layer processing on the received data, the RLC layer data packet is sent to the RLC layer module.
  • the RLC layer module is configured to receive and process the RLC layer data packet from the MAC layer.
  • the physical layer module may be further configured to: receive the correct result according to the determined RLC layer data, and return to the sending side to indicate that the received data is received correctly. Message.
  • the physical layer module can determine whether the data is received correctly according to the validity bits in the data after receiving and processing the data, such as demodulation, despreading, and channel coding.
  • the receiving side may be a UE, and the corresponding transmitting side is a terrestrial radio access network side.
  • the physical layer module, the MAC layer module, and the RLC layer module are respectively a physical layer module, a MAC layer module, and an RLC layer module of the UE.
  • the receiving side may also be the terrestrial radio access network side, and the corresponding transmitting side is the UE side.
  • the physical layer module is the physical layer module of the NB
  • the MAC layer module is the MAC layer module of the RNC
  • the RLC layer module is the RLC layer module of the RC.
  • the physical layer module of the NB needs to pass the RNC.
  • the physical layer module sends data to the MAC layer of the RNC.
  • the present invention further provides a wireless data transmission method, which is applicable to RLC layer data transmission between a UE side and a UTRAN side, wherein the sending side caches the current RLC layer data, and the overall process of the method is as shown in FIG. 6, including The following steps:
  • Step 601 the sending side sends the current RLC layer data to the receiving side, when the receiving side physical layer determines that the data is received incorrectly, step 602 is performed;
  • Step 602 The receiving side physical layer generates and replies to the receiving side to receive the incorrect data receiving situation message to the sending side, and the sending side transmits the buffered current RLC layer data to the receiving side physical layer.
  • the receiving side physical layer may transmit the current RLC layer data to the receiving side RLC layer through the MAC layer, generate and reply to receive the correct data receiving situation message to the sending side. , the transmitting side discards the current RLC layer data.
  • the physical layer on the receiving side can still determine whether the current receiving is correct. If yes, the current RLC layer data is transmitted to the receiving side RLC layer, and the message indicating that the correct data receiving condition is received is sent to the sending side, and sent. The side discards the current RLC layer data. Otherwise, it generates and replies that the received data reception status message is sent to the transmitting side, and the transmitting side transmits the buffered current RLC layer data to the receiving side physical layer. This further ensures the correct data transmission.
  • the maximum number of retransmissions is set on the transmitting side.
  • the transmitting side receives the data reception status message indicating the data reception error, it is determined whether the retransmission has reached the maximum weight. The number of transmissions, if yes, directly discards the buffered corresponding RLC layer data, or performs a reset process; otherwise, performs the step of resending the buffered RLC layer data.
  • the transmitting side may cache the current RLC layer data in its own MAC layer, or may cache the current RLC layer data in its own RLC layer.
  • the receiving side When the current RLC layer data is buffered in the RLC layer on the transmitting side, the receiving side returns a data receiving status message to the physical layer of the transmitting side, and after the physical layer of the transmitting side parses the text, the data receiving status report that can be identified by the sending RLC layer is reported.
  • the message is sent to the RLC layer on the transmitting side, and the RLC layer on the transmitting side resends the current RLC layer data buffered therein according to the data receiving message, or discards the buffered RLC layer data, or performs a reset process.
  • the data reception condition message that the RLC layer can recognize is the RLC layer control message.
  • the receiving side When the current RLC layer data is buffered in the MAC layer of the transmitting side, the receiving side returns a data receiving status message to the physical layer of the transmitting side, and the physical layer of the transmitting side parses the packet and sends the MAC address.
  • the layer can identify the data reception status message indicating that the data is received correctly or incorrectly to the MAC layer.
  • the MAC layer reads the current RLC layer data buffered by itself according to the message, and performs MAC layer processing and then sends the data to the physical layer on the sending side. Receive the physical layer on the receiving side, or discard the cached current RLC layer data.
  • the data receiving status message that can be identified by the MAC layer is a MAC layer control message.
  • Embodiment 1 the MAC layer module on the transmitting side caches the current RLC layer data, and the MAC layer module on the transmitting side determines whether to retransmit the current data according to the data receiving status message replied by the physical layer module on the receiving side.
  • FIG. 7 is a flowchart of a data transmission process according to the first embodiment of the present invention.
  • the figure is an example of the case where the uplink RLC layer data packet X is sent from the UE side to the UTRAN side, and specifically includes the following steps:
  • Steps 701-705 After receiving the high-level data packet from the upper layer of the RLC layer, the RLC layer module of the UE adds the control information related to the RLC to the RLC layer data packet X, and the RLC layer module of the UE transmits the data packet.
  • the X to MAC layer module buffers the received data packet, and sends the data packet to the UE physical layer module after performing MAC layer processing on the data packet, and the UE physical layer module sends and processes the data packet; the UE physical layer module After the transmission process, the data of the data packet X is included in the NB physical layer module; the B physical layer module determines whether the data is received correctly, and if yes, generates a physical layer control packet P1 indicating that the packet is received and performs the processing.
  • Step 705 in FIG. 7 is exemplified by the case where the reception is incorrect.
  • Steps 706 to 707 The B physical layer module transmits and controls the PI or P0 to the UE physical layer module.
  • the UE physical layer module receives the control packet P1 or P0. If the control packet P1 is received, the control packet is controlled.
  • the packet P1 is informed that the data packet X is transmitted correctly, and the MAC layer control packet indicating that the data transmission is correct is sent to the MAC layer module of the UE. After receiving the MAC layer control packet indicating that the data transmission is correct, the MAC layer module of the UE discards the buffer. The data packet X ends the process. If the UE physical layer module receives the control packet P0, it learns that the data packet X is transmitted incorrectly by parsing the control message P0, and sends a MAC layer indicating the data transmission error to the MAC layer module of the UE.
  • the MAC layer control module of the UE After the MAC layer control module of the UE receives the MAC layer control packet indicating the data transmission error, it determines whether the retransmission has reached the preset maximum number of retransmissions. If the maximum number of retransmissions is reached, the cached data is discarded. The packet X ends the process. If the maximum number of retransmissions is not reached, the MAC layer module of the UE performs the MAC layer processing on the buffered data packet X, and sends the packet to the physical layer module of the UE. Transmission process, step 708 and subsequent steps. Steps 706 to 707 in FIG. 7 take the case of controlling the message P0 as an example.
  • Steps 708 to 709 The UE physical layer transmits the data packet X to the NB physical layer module; the NB physical layer module determines whether the data reception is correct, and if yes, generates a control indicating that the correct control is received and sends the processing, and the execution step is performed. 710 and its subsequent steps, step 710' and its subsequent steps are performed simultaneously; otherwise, a control message P0 indicating that the reception is incorrect is generated and sent, and step 710 and subsequent steps are performed. Step 709 in Figure 7 is taken as an example of receiving the correct situation.
  • Steps 710 to 711 The NB physical layer module transmits a control packet P1 or P0 to the UE physical layer module.
  • the UE physical layer module receives the control packet P1 or P0. If the control packet P1 is received, the control packet is parsed. The P1 is informed that the data packet X is transmitted correctly, and the MAC layer control packet indicating that the data transmission is correct is sent to the MAC layer module of the UE. After receiving the MAC layer control packet indicating that the data transmission is correct, the MAC layer module of the UE discards the buffer. The data packet X ends the process.
  • the UE physical layer module receives the control packet P0, it learns that the data packet X is transmitted incorrectly by parsing the control message P0, and sends a MAC layer indicating the data transmission error to the MAC layer module of the UE. After receiving the MAC layer control message indicating the data transmission error, the MAC layer module of the UE performs the MAC layer processing on the buffered data packet X, and sends the packet to the physical layer module of the UE for processing, and repeatedly performs the processing. Steps 708 to 711, until the MAC layer module of the UE receives the indication that the NB physical layer module receives the correct control packet P1, or reaches the maximum number of retransmissions. Steps 710 to 711 in FIG. 7 take the case of controlling the text P1 as an example.
  • Steps 710' ⁇ 711' The B physical layer module transmits the data packet X to the RLC layer module of the RNC through the RNC physical layer module and the MAC layer module; the RLC layer module of the RNC decapsulates the data packet X, and transmits the upper layer data packet to the RLC layer.
  • the upper layer of the module The upper layer of the module.
  • the format of the physical layer control messages P1 and P0 is not specifically limited.
  • the data reception status message in the case of the most simple case, they may be 1-bit binary characters.
  • the B physical layer module may determine whether the data reception is correct according to the validity bit in the data after receiving processing such as demodulation, despreading, and channel coding of the data.
  • Embodiment 2 In this embodiment, the RLC layer module on the transmitting side caches the current RLC layer data, and the RLC layer module on the transmitting side determines whether to retransmit the current data according to the data receiving status message replied by the physical layer module on the receiving side.
  • Embodiment 8 is a data transmission procedure according to Embodiment 2 of the present invention.
  • the figure is an example of the case where the uplink RLC layer data packet X is sent from the UE side to the UTRAN side, and specifically includes the following steps:
  • Steps 801 to 805 After receiving the high-level data packet from the upper layer of the RLC layer, the RLC layer module of the UE adds the control information related to the RLC and encapsulates it into the RLC layer data packet X, and buffers the data packet X; the RLC of the UE The layer module transmits the data packet X to the MAC layer module of the UE, and after processing by the MAC layer, sends the data including the data packet X to the UE physical a layer module; the UE physical layer module sends the received data including the data packet X; the UE physical layer module transmits the data including the data packet X to the NB physical layer module; and the NB physical layer module determines whether the data reception is correct, and if so, Then, generating and indicating that the correct physical layer control message P1 is received and performing the transmission process, performing step 806 and subsequent steps, and transmitting the data packet X through the physical layer module and the MAC layer module of the RNC.
  • the RLC layer module of the RNC decapsulates the data packet X and transmits the upper layer data packet to the upper layer of the RLC layer. Otherwise, the physical layer control packet P0 indicating that the reception is incorrect is generated and sent. , step 806 and subsequent steps are performed. Step 805 in FIG. 8 is exemplified by the case where the reception is incorrect.
  • Steps 806 to 809 The NB physical layer module transmits a control packet P1 or P0 to the UE physical layer module.
  • the UE physical layer module receives the control packet P1 or P0, and obtains the data packet according to the analysis result of the control packet P1 or P0. Whether the X transmission is correct or not, and generates a corresponding control message R1 or R0 indicating that the data packet X is transmitted correctly.
  • the control message is a message that the RLC layer module of the UE can recognize, and then processed by the MAC layer module of the UE.
  • Step 806 in Fig. 8 takes the case of controlling the message P0 as an example.
  • steps 807 to 809 in Fig. 8 take the case of controlling the message R0 as an example.
  • Steps 810 - 813 The RLC layer module of the UE determines whether the retransmitted data packet X has reached the maximum number of retransmissions, and if so, directly discards the data packet X or initiates a reset process; if the maximum number of retransmissions is not reached, the buffered data is transmitted.
  • Packet X to the MAC layer module of the UE after processing by the MAC layer, transmitting data including the data packet X to the UE physical layer module; the UE physical layer module transmitting and processing the received data including the data packet X; The module transmits data including the data of the packet X to the NB physical layer module; the NB physical layer module determines whether the data is received correctly, and if yes, generates a physical layer control message P1 indicating that the packet is received and performs the processing, and performs step 814 and In the subsequent steps, steps 814' and 815' are performed at the same time. Otherwise, the physical layer control message P0 indicating that the reception is incorrect is generated and sent, and step 814 and subsequent steps are performed. Step 813 in Figure 8 is taken as an example of receiving the correct situation.
  • Steps 814 to 817 The NB physical layer module transmits a control packet P1 or P0 to the UE physical layer module.
  • the UE physical layer module receives the control packet P1 or P0, and obtains the data packet according to the analysis result of the control packet P1 or P0. Whether the X transmission is correct or not, and generates a corresponding control message R1 or R0 indicating that the data packet X is transmitted correctly.
  • the control message is a message that the RLC layer module of the UE can recognize, and then processed by the MAC layer module of the UE.
  • Step 814 in Fig. 8 takes the case of controlling the message P1 as an example.
  • steps 815-817 in Fig. 8 take the case of controlling the message R1 as an example.
  • the NB physical layer module transmits the data packet X to the RLC layer module of the RNC through the physical layer module and the MAC layer module of the RNC; the RLC layer module of the RNC decapsulates the data packet X, and transmits the upper layer data packet to the RLC layer.
  • the upper layer of the module The upper layer of the module.
  • the format of the R0 of the physical layer control messages P1 and P0 and the control message R1 sent from the physical layer to the RLC layer is not specifically limited.
  • a data receiving situation message in the case of the most simple case, they may be 1 Bit binary character.
  • the NB physical layer module may determine whether the data reception is correct according to the validity bit in the data after receiving processing such as demodulation, despreading, and channel coding of the data.

Description

无线数据传输方法、 发送系统和接收系统 技术领域 本发明涉及无线数据传输技术领域, 特别涉及一种无线链路控制
( RLC )层数据传输方法、 一种发送系统和一种接收系统。 发明背景 由于无线接口中常存在突发性误码,故当前的 WCDMA系统为保证 误码率要求而在协议分层中引入了 RLC层,该层主要用于实现数据的编 号、 分段、 级联和重传等功能。 具体的, 以从用户终端设备(UE )侧发 送上行 RLC层数据到陆地无线接入网 (UTRAN )侧为例, UE侧 RLC 层发送的 RLC层数据经 UE的媒体访问控制( MAC )层、 UE物理层和 UTRAN侧基站( NB )物理层, 以及 UTRAN侧无线网络控制器( RNC ) 的 MAC层传输到 R C的 RLC层(RNC - RLC )后, RNC - RLC层会 根据当前的接收状态回复数据接收情况报文给 UE - RLC层, 该报文通 常显示了当前数据是否被正确接收, UE - RLC 层可根据该报文判断应 传输后续新数据或是重传当前数据 , 以确保对未正确接收的数据进行重 传, 从而达到误码率的要求。
图 1是现有技术的无线数据传输方法,该图以从 UE侧发送上行 RLC 层数据包 X到 UTRAN侧的情况为例。现有技术的无线数据传输方法包 括以下步骤:
步骤 101 ~ 107: UE - RLC层模块在接收到来自 RLC层上层的高层 数据报文后, 在报文上添加与 RLC相关的控制信息并封装为 RLC层数 据包 X, 緩存数据包 X; UE - RLC层模块通过 UE - MAC层模块对数 据包 X进行 MAC层处理后,传输到 UE物理层模块; UE物理层模块对 包括数据包 X的数据进行信道编码、 扩频和调制等发送处理; UE物理 层模块传输包括数据包 X的数据到 NB物理层模块; NB物理层模块对 接收的包括数据包 X的数据进行解调、解扩和信道解码等接收处理; NB 物理层模块将处理后的数据通过 RLC - MAC层模块进行 MAC层处理 后, 传输数据包 X到 RNC - RLC层模块; RNC - RLC层模块判断数据 包 X接收是否正确, 如果是, 则解封装数据包 X, 从中提取高层数据报 文发送到 RLC层上层, 同时生成表示接收正确的 RLC层控制报文 Y1 , 执行步骤 108及其后续步驟,否则,生成表示接收不正确的 RLC层控制 报文 Y0, 执行步骤 108及其后续步驟。 图 1中的步骤 107以接收不正 确的情况为例。
步骤 108 ~ 113: RNC - RLC模块将控制报文 Y1或 Y0通过 R C - MAC层模块进行 MAC层处理后发送到 NB物理层模块; NB物理层模 块对控制报文 Y1 或 Y0进行发送处理; NB物理层模块传输控制报文 Y1或 Y0到 UE物理层模块; UE物理层模块对控制报文 Y1或 Y0进行 接收处理; UE物理层模块通过 UE - MAC层模块传输控制报文 Y1或 Y0到 UE - RLC层模块; UE - RLC层模块解析控制报文 Y1或 Y0, 获 知数据包 X传输是否正确, 如果其接收到表示 R C - RLC层模块接收 正确的控制报文 Y1 , 则丢弃数据包 X, 结束本流程, 如果其接收到表示 RNC - RLC层模块接收不正确的控制报文 Y0, 则执行步骤 114及其后 续步骤。 图 1中的步驟 108 ~ 113以控制报文 Υ0的情况为例。
步骤 114 ~ 119: UE - RLC层模块从緩存区中读取数据包 X并通过 UE - MAC层模块对数据包 X进行 MAC层处理后, 传输到 UE物理层 模块; UE物理层模块对包括数据包 X的数据进行发送处理; UE物理层 模块传输包括数据包 X的数据到 B物理层模块; B物理层模块对包 括数据包 X的数据进行接收处理; NB物理层模块将处理后的数据通过 RLC - MAC层模块进行 MAC层处理后, 传输数据包 X到 RNC - RLC 层模块; RNC - RLC层模块判断接收是否正确, 如果是, 则解封装数据 包 X并从中提取高层数据报文发送到 RLC层上层, 同时生成表示接收 正确的 RLC层控制报文 Y1 , 执行步骤 210及其后续步驟, 否则, 生成 表示接收不正确的 RLC层控制报文 Υ0, 执行步骤 210及其后续步骤。 图 1中的步驟 119以接收正确的情况为例。
步骤 120 ~ 125: RNC - RLC模块将控制 4艮文 Y1或 Υ0通过 RNC - MAC层模块进行 MAC层处理后发送到 NB物理层模块; NB物理层模 块对控制报文 Y1 或 Y0进行发送处理; B物理层模块传输控制报文 Y1或 Y0到 UE物理层模块; UE物理层模块对控制报文 Y1或 Y0进行 接收处理; UE物理层模块通过 UE - MAC层模块传输控制报文 Y1或 Y0到 UE - RLC层模块; UE - RLC层模块解析控制报文 Y1或 Y0, 获 知数据包 X传输是否正确, 如果其接收到表示 R C― RLC层模块接收 正确的控制报文 Yl, 则丟弃数据包 X, 结束本流程, 如果其接收到表示 RNC - RLC层模块接收不正确的控制报文 Υ0, 则重复执行步骤 114 ~ 125, 直到 UE - RLC层模块接收到表示 R C - RLC层模块接收正确的 控制报文 Y1为止。图 1中的步骤 120 ~ 125以控制报文 Y1的情况为例。
'其中, UE - RLC层模块接收到表示 RNC - RLC层模块接收正确的 控制报文 Y1后, 丢弃其緩存的当前数据包, 以便发送后续新的 RLC层 数据。
当前, 对于采用现有技术的 RLC层数据传输方法来说, 发送侧只有 在接收到接收侧的 RLC层回复的数据接收情况报文后, 才能够确定应重 传当前数据或是传送新的数据, 以图 1的上行情况为例, 数据接收情况 报文由 RNC - RLC层生成并经 ΝΒ物理层传输到 UE侧, 由于 ΝΒ物理层要 对数据进行相应处理, 这就使得数据接收情况报文的回复速度极为緩 慢, 最后导致了 RLC层数据传输速度緩慢。 发明内容 有鉴于此, 本发明的目的在于提供一种无线数据传输方法、 一种发 送系统和一种接收系统, 能够提高 RLC层数据传输速度。 为达到上述目的, 本发明提供了一种无线数据传输方法, 适用于 UE侧和 UTRAN侧之间的 RLC层数据传输,发送侧緩存当前 RLC层数 据, 该方法包括:
A、 发送侧发送所述当前 RLC层数据到接收侧, 当接收侧物理层确 定数据接收错误时, 执行步驟 B;
B、 接收侧物理层生成并回复表示接收错误的数据接收情况报文给 发送侧, 发送侧传输緩存的所述当前 RLC层数据到接收侧。
较佳地, 步骤 B中发送侧传输緩存的所述当前 RLC层数据到接收 侧之前进一步包括:发送侧判断重新发送所述当前 RLC层数据是否达到 了预先设定的最大重传次数,如果是,则丢弃緩存的所述当前 RLC层数 据或发起复位处理; 否则, 执行所述发送侧传输緩存的所述当前 RLC 层数据到接收侧的步骤。
较佳地, 步驟 A中进一步包括: 当接收侧物理层确定当前接收正确 时, 执行步骤 C:
C、 接收侧物理层通过媒体访问控制 MAC层传输当前 RLC层数据 到接收侧 RLC层,生成并回复表示接收正确的数据接收情况报文给发送 侧, 发送侧丢弃緩存的当前 RLC层数据。
较佳地, 所述步骤 B后进一步包括: 接收侧物理层判断当前接收是 否正确, 如果是, 则执行所述步骤 C, 否则执行所述步骤 B。
其中, 可以由发送侧 RLC层緩存当前 RLC层数据,
所述步骤 B为:接收侧物理层生成并回复表示接收不正确的数据接 收情况报文至发送侧, 发送侧物理层根据该数据接收情况报文生成对应 的 RLC层控制报文, 并通过 MAC层发送至 RLC层, 发送侧 RLC层根 据该 RLC层控制报文传输所述緩存当前 RLC层数据到接收侧物理层; 所述步驟 C为:接收侧物理层通过接收侧 MAC层传输当前 RLC层 数据到接收侧 RLC层, 生成并回复表示接收正确的数据接收情况报文, 发送侧物理层根据该数据接收情况报文生成对应的 RLC层控制报文,并 通过 MAC层发送给发送侧 RLC层,发送侧 RLC层才艮据该 RLC层控制 报文丢弃缓存的所述当前 RLC层数据。
其中, 也可以由发送侧 MAC层緩存当前 RLC层数据,
所述步骤 B为:接收侧物理层生成并回复表示接收不正确的数据接 收情况报文给发送侧物理层, 发送侧物理层根据该数据接收情况报文生 成对应的 MAC层控制报文, 并发送给发送侧 MAC层,发送侧 MAC层 根据该 MAC层控制报文传输所述当前 RLC层数据到接收侧物理层; 所述步骤 C为:接收侧物理层通过接收侧 MAC层传输当前 RLC层 数据到接收侧 RLC层,生成并回复表示接收正确的数据接收情况报文给 发送侧物理层 ,发送侧物理层根据该数据接收情况报文生成对应的 MAC 层控制报文, 并发送给发送侧 MAC层,发送侧 MAC层根据该 MAC层 控制报文丟弃緩存的所述当前 RLC层数据。
较佳地,所述接收侧物理层在接收到来自发送侧物理层的所述 RLC 层数据后, 对数据进行接收处理后, 根据数据中的效验位来确定数据接 收是否正确。
其中, 所述发送侧是 UE侧, 所述发送侧 RLC层是 UE侧 RLC层, 所述发送侧 MAC层是 UE的 MAC层,所述发送侧物理层是 UE物理层; 所述接收侧是 UTRAN侧, 所述接收侧 RLC层是无线网络控制器 RNC 的 RLC层, 所述接收侧 MAC层是 RNC的 MAC层, 所述接收侧物理 层是基站 NB物理层;
或者,所述发送侧是 UTRAN侧,所述发送侧 RLC层是 RNC的 RLC 层, 所述发送侧 MAC层是 RNC的 MAC层, 所述发送侧物理层是 NB 物理层,
所述接收侧是 UE侧, 所述接收侧 RLC层是 UE的 RLC层, 所述 接收侧 MAC层是 UE的 MAC层, 所述接收侧物理层是 UE物理层。
本发明还提供了一种发送系统, 该发送系统中包括: 数据緩存模块 和物理层模块; 其中,
数据緩存模块用于緩存需要发送的 RLC层数据;
物理层模块用于获取所述数据緩存模块中的 RLC层数据,并进行处 理后将其发送到接收侧,以及根据来自接收侧的表示所述 RLC层数据接 收错误的数据接收情况报文, 重新发送所述 RLC层数据。
较佳地, 所述物理层模块进一步用于根据来自接收侧的表示所述 RLC层数据接收正确的数据接收情况报文,丢弃所述数据緩存模块中的 所述 RLC层数据。
该发送系统中进一步可以包括: 包括所述数据緩存模块的 MAC层 模块, 用于接收 RLC层数据包, 将该 RLC层数据包緩存到数据緩存模 块中, 对该 RLC层数据包进行 MAC层处理后, 将包括 RLC层数据包 的数据发送至物理层模块, 并根据来自物理层模块的表示数据接收错误 的数据接收情况报文, 重新读取緩存的对应 RLC 层数据包并在进行 MAC 层处理后发送至物理层模块; 以及根据来自物理层模块的表示数 据接收错误的数据接收情况报文,丟弃数据緩存模块中的对应 RLC层数 据包;
所述物理层模块接收来自接收 MAC层模块的包括 RLC层数据包的 数据, 将其发送到接收侧, 并解析接收的来自接收侧表示数据接收错误 或正确的数据接收情况报文, 向 MAC层模块对应发送其能够识别的表 示数据接收错误或正确的数据接收情况报文, 以及重新接收来自 MAC 层模块的包括所述 RLC层数据包的数据, 将其发送给接收侧。
或者该系统中进一步包括: 包括所述数据緩存模块的 RLC层模块, 和 MAC层模块;
所述 RLC层模块用于将数据緩存模块中的 RLC层数据处理后, 发 送 RLC层数据包至 MAC层, 并根据来自 MAC层模块的表示数据接收 错误的数据接收情况报文,重新将所述緩存的 RLC层数据处理后发送至 MAC层模块;以及根据来自 MAC层模块的表示数据接收正确的数据接 收情况报文, 丢弃数据緩存模块中的所述 RLC层数据;
MAC层用于对接收的 RLC数据包进行 MAC层处理后发送包括 RLC层数据包的数据到物理层模块, 以及将来自物理层模块的表示数据 接收情况的报文进行 MAC层处理后转发至 RLC层模块;
则所述物理层模块接收来自 MAC层模块的所述包括 RLC层数据包 的数据, 将其发送到接收侧, 并根据接收的表示数据接收错误或正确的 数据接收情况报文, 向 MAC层模块对应发送表示数据接收错误或正确 的数据接收情况报文, 以及重新接收来自 MAC层模块的包括所述 RLC 层数据包的数据, 并发送给接收侧。
较佳地,所述的物理层模块、 MAC层模块和 RLC层模块分别为 UE 的物理层模块、 MAC层模块和 RLC层模块; 或者, 所述的物理层模块 为 NB的物理层模块,所述的 MAC层模块和 RLC层模块为 RNC的 MAC 层模块和 RLC层模块。 本发明还公开了一种接收系统, 该接收系统中包括: 物理层模块、
MAC层模块和 RLC层模块;
所述物理层模块用于通过 MAC层向 RLC层传送接收正确的 RLC 层数据, 以及接收来自发送侧的 RLC层数据, 确定该 RLC层数据传输 是否正确,并根据确定出的该 RLC层数据接收错误的结果,向发送侧返 回表示接收错误的数据接收情况报文;
RLC层模块用于通过 MAC层接收来自物理层模块的 RLC层数据。 较佳地,所述物理层模块进一步用于根据确定出的所述 RLC层数据 接收正确的结果, 向发送侧返回表示接收正确的数据接收情况报文。
所述的物理层模块、 MAC层模块和 RLC层模块分别为 UE的物理 层模块、 MAC层模块和 RLC层模块; 或者, 所述的物理层模块为 B 的物理层模块, 所述的 MAC层模块和 RLC层模块为 RNC的 MAC层 模块和 RLC层模块。
可见, 在本发明提供的无线数据传输方法中, 数据接收情况报文由 位于接收侧 RLC层下层的物理层回复, 以上行情况为例, 由于数据接收 情况报文由位于 RNC - RLC层下层的 B物理层生成并传输到 UE侧, 这 使得数据接收情况报文的 ^复路径被缩短, 数据接收情况报文的回复速 度得以加快, 进而提高了 RLC层数据传输速度。 附图简要说明 图 1是现有技术的无线数据传输方法;
图 2为本发明发送侧的组成结构示意图;
图 3为本发明发送侧数据緩存模块设置在物理层模块中的结构示意 图;
图 4为本发明发送侧数据緩存模块设置在 RLC层模块中的结构示意 图;
图 5为本发明接收侧的组成结构示意图; , 图 6为本发明无线数据传输方法的总体流程图;
图 7是本发明实施例一的无线数据传输方法;
图 8是本发明实施例二的无线数据传输方法。 实施本发明的方式 为使本发明的目的、 技术方案和优点更加清楚, 下面结合附图对本 发明作进一步的详细描述。
本发明的核心思想是: 由接收侧的物理层回复确认当前数据接收情 况的控制报文, 加快 RLC 层数据接收情况报文的回复速度, 从而提高 RLC层数据传输速度。
本发明中, 发送侧的组成结构如图 2所示。 从图 2中可以看出, 发 送侧包括物理层模块和数据緩存模块。 其中:
数据緩存模块用于緩存需要发送的 RLC层数据;
物理层模块用于获取所述数据緩存模块中的 RLC层数据,并进行处 理后将其发送到接收侧,以及根据来自接收侧的表示所述 RLC层数据接 收错误的数据接收情况报文, 重新发送包括所述 RLC层数据的数据。
物理层模块可以进一步用于根据来自接收侧的表示所述 RLC层数 据接收正确的数据接收情况报文, 丟弃所述数据緩存模块中的所述数 据。
数据緩存模块可以单独设置, 也可以如图 3所示设置在 MAC层模 块中, 或如图 4所示设置在 RLC层模块中。
在图 3所示的情况下, MAC层模块用于接收来自 RLC层模块的 RLC 层数据包, 将该 RLC层数据包緩存到数据緩存模块中, 对该 RLC层数 据包进行 MAC层处理后,将包括 RLC层数据包的数据发送至物理层模 块, 并根据来自物理层模块的表示数据接收错误的数据接收情况报文, 重新读取緩存的对应 RLC层数据包并在进行 MAC层处理后发送至物理 层模块; 以及根据来自物理层模块的表示数据接收错误的数据接收情况 报文, 丟弃数据緩存模块中的对应 RLC层数据包;
则上述物理层模块获取数据为接收来自 MAC层模块的包括 RLC层 数据包的数据, 将其发送到接收侧, 此外, 物理层模块还用于解析接收 的表示数据接收错误或正确的数据接收情况报文, 向 MAC层模块对应 发送其能够识别的表示数据接收错误或正确的数据接收情况报文, 即 MAC层控制报文, 以及重新接收来自 MAC层模块的包括所述 RLC层 数据包的数据, 将其发送给接收侧。
在图 4的情况下, RLC层模块用于将数据緩存模块中的 RLC层数 据处理后, 发送 RLC层数据包至 MAC层模块, 并根据来自 MAC层模 块的表示数据接收错误的数据接收情况报文, 重新将所述緩存的 RLC 层数据处理后发送至 MAC层模块; 以及根据来自 MAC层模块的表示 数据接收正确的数据接收情况报文, 丟弃数据緩存模块中的所述 RLC 层数据;
MAC层用于对接收的 RLC数据包进行 MAC层处理后发送包括 RLC层数据包的数据到物理层模块, 以及将来自物理层模块的表示数据 接收情况的报文进行 MAC层处理后转发至 RLC层模块;
而物理层模块用于接收来自 MAC层模块的所述包括 RLC层数据包 的数据, 将其发送到接收侧, 并根据接收的表示数据接收错误或正确的 数据接收情况报文, 即 RLC层控制报文, 通过 MAC层模块向 RLC层 模块对应发送 RLC 层模块能够识别的表示数据接收错误或正确的数据 接收情况报文,以及重新接收来自 MAC层模块的包括所述 RLC层数据 包的数据, 并发送给接收侧。
在图 3或图 4中, 包括数据緩存模块的 MAC层模块或 RLC层模块 中可以预先设置最大重传次数, 则在接收到表示数据接收错误的数据接 收情况报文后, MAC层模块或 RLC层模块在确定出重传没有达到最大 重传次数时,才重新发送数据緩存模块中的 RLC层数据, 而在确定出达 到最大重传次数后, 丟弃緩存的数据。 另外, RLC层模块在确定出达到 最大重传次数后, 也可以发起复位处理, 复位处理包括: RLC层模块发 送复位(RESET ) 消息到接收侧的 RLC层模块, 接收侧 RLC层模块接 收到 RESET消息后, 向发送端回复复位响应 (RESET— ACK ), 这样就 完成了复位过程。 另外, 如目前的 RLC层重传机制, 在复位次数达到一 定的次数后, 可发起业务释放的过程。
上述发送侧可以为 UE, 上述接收侧为陆地无线接入网侧。 则上述 物理层模块、 MAC层模块和 RLC层模块分别为 UE的物理层模块、 MAC 层模块和 RLC层模块。
上述发送侧也可以为陆地无线接入网侧, 上述接收侧为 UE侧。 则 上述物理层模块为 NB的物理层模块,而 MAC层模块为 RLC层的 MAC 层模块, RLC层模块为 RNC的 RLC层模块, 则在具体实现时, NB物 理层模块相 RNC的 MAC层模块发送数据时, 本领域技术人员公知的, 需要经过 RNC的物理层来发送。
与发送侧对应的, 本发明的接收侧的组成如图 5所示, 包括物理层 模块、 MAC层模块和 RLC层模块。 其中:
物理层模块用于通过 MAC层模块向 RLC层模块传送接收正确的 RLC层数据, 以及接收来自发送侧的 RLC层数据, 并根据确定出的该 RLC层数据接收错误的结果,向发送侧返回表示接收错误的数据接收情 况才艮文; π 其中,物理层模块通过 MAC层模块向 RLC层模块传送接收正确的 RLC层数据具体包括: 物理层模块接收来自发送侧的包括 RLC层数据 包的数据,在进行接收处理并确定接收正确后,将包括 RLC层数据包的 数据发送至 MAC层模块, MAC层模块对接收的数据进行 MAC层处理 后, 发送 RLC层数据包至 RLC层模块。
RLC层模块用于接收来自 MAC层的 RLC层数据包并进行处理; 上述物理层模块可以进一步用于根据确定出的上述 RLC层数据接 收正确的结果, 向发送侧返回表示接收正确的数据接收情况报文。
物理层模块可以在对数据进行解调、 解扩和信道编码等接收处理 后, 根据数据中的效验位来确定数据接收是否正确。
图 5 中, 接收侧可以为 UE, 对应的发送侧为陆地无线接入网侧。 则上述物理层模块、 MAC层模块和 RLC层模块分别为 UE的物理层模 块、 MAC层模块和 RLC层模块。
图 5 中, 接收侧也可以是陆地无线接入网侧, 对应的发送侧为 UE 侧。 则上述物理层模块为 NB的物理层模块, 上述 MAC层模块为 RNC 的 MAC层模块, RLC层模块为 R C的 RLC层模块; 如本领域技术人 员公知的, NB 的物理层模块需要通过 RNC 的物理层模块发送数据至 RNC的 MAC层。
本发明还提供了一种无线数据传输方法, 适用于 UE侧和 UTRAN 侧之间的 RLC层数据传输, 其中, 发送侧緩存当前 RLC层数据, 则该 方法的总体流程如图 6所示, 包括如下步骤:
步驟 601、 发送侧发送所述当前 RLC层数据到接收侧, 当接收侧物 理层确定数据接收不正确时, 执行步驟 602;
步骤 602、 接收侧物理层生成并回复表示接收不正确的数据接收情 况报文给发送侧, 发送侧传输緩存的当前 RLC层数据到接收侧物理层。 上述步驟 601中, 当接收侧物理层确定当前接收正确时, 接收侧物 理层可以通过 MAC层传输当前 RLC层数据到接收侧 RLC层, 生成并 回复表示接收正确的数据接收情况报文给发送侧, 则发送侧丟弃当前 RLC层数据。
在上述步骤 602后,接收侧物理层仍然可以判断当前接收是否正确, 如果是, 则传输当前 RLC层数据到接收侧 RLC层, 生成并回复表示接 收正确的数据接收情况报文给发送侧,发送侧丟弃当前 RLC层数据,否 则生成并回复表示接收不正确的数据接收情况报文给发送侧, 发送侧传 输緩存的当前 RLC层数据到接收侧物理层。从而进一步保证了数据传输 的正确。
由于数据重传无限次的进行将极大浪费通信资源 , 所以在发送侧设 置最大重传次数, 当发送侧接收到表示数据接收错误的数据接收情况报 文后, 判断重传是否达到了最大重传次数, 如果是, 则直接丢弃緩存的 对应 RLC层数据, 或进行复位处理; 否则, 执行重新发送緩存的 RLC 层数据的步骤。
本发明方法中,发送侧可以在自身的 MAC层中緩存当前 RLC层数 据, 也可以在自身的 RLC层中緩存当前 RLC层数据。
当在发送侧 RLC层中緩存当前 RLC层数据时, 接收侧返回数据接 收情况报文给发送侧物理层, 发送侧物理层对该 文进行解析后 , 对应 发送 RLC层能够识别的数据接收情况报文至发送侧 RLC层,发送侧 RLC 层根据数据接收报文重新发送其中緩存的当前 RLC层数据,或丢弃所緩 存的 RLC层数据, 或进行复位处理。 这里的 RLC层能够识别的数据接 收情况报文为 RLC层控制报文。
当在发送侧 MAC层緩存当前 RLC层数据时 ,接收侧返回数据接收 情况报文给发送侧物理层, 发送侧物理层对该报文解析后, 发送 MAC 层能够识别的表示数据接收正确或错误的数据接收情况报文到 MAC 层, MAC层根据该报文读取自身中緩存的当前 RLC层数据, 并进行 MAC层处理后通过发送侧物理层发送到接收侧物理层, 或丢弃緩存的 当前 RLC层数据。其中, MAC层能够识别的数据接收情况报文为 MAC 层控制报文。
为使本发明的目的、技术方案和优点更加清楚明白,以下举实施例, 并参照附图, 对本发明进一步详细说明。
实施例一: 本实施例中, 发送侧的 MAC层模块緩存当前的 RLC层 数据, 发送侧的 MAC层模块根据接收侧的物理层模块回复的数据接收 情况报文确定是否重传当前数据。
图 7是本发明实施例一的数据传输流程, 该图以从 UE侧发送上行 RLC层数据包 X到 UTRAN侧的情况为例, 具体包括以下步驟:
步驟 701 - 705: UE的 RLC层模块接收到来自 RLC层上层的高层 数据报文后, 在其上添加与 RLC相关的控制信息并封装为 RLC层数据 包 X; UE的 RLC层模块传输数据包 X到 MAC层模块, MAC层模块 对接收的数据包进行缓存, 并在对该数据包进行 MAC层处理后发送到 UE物理层模块, UE物理层模块对数据包进行发送处理; UE物理层模 块传输处理后包括数据包 X的数据到 NB物理层模块; B物理层模块 判断数据接收是否正确, 如果是, 则生成表示接收正确的物理层控制报 文 P1并对其进行发送处理, 执行步骤 706及其后续步骤, 同时在对数 输到 RNC的 RLC层模块, 由 RNC的 RLC层模块对数据包 X进行解封 装并传输高层数据报文到 RLC层模块上层,否则生成表示接收不正确的 物理层控制报文 P0并对其进行发送处理, 执行步骤 706及其后续步骤。 图 7中的步骤 705以接收不正确的情况为例。 步驟 706 ~ 707: B物理层模块传输控制 4艮文 PI或 P0到 UE物理 层模块; UE物理层模块对控制报文 P1或 P0进行接收处理, 如果接收 到控制报文 Pl, 则通过解析控制报文 P1 获知数据包 X传输正确, 向 UE的 MAC层模块发送表示数据传输正确的 MAC层控制报文, UE的 MAC层模块接收到表示数据传输正确的 MAC层控制报文后,丟弃緩存 的数据包 X, 结束本流程, 如果 UE物理层模块接收到控制报文 P0, 则 通过解析控制报文 P0获知数据包 X传输不正确,向 UE的 MAC层模块 发送表示数据传输错误的 MAC层控制报文, UE的 MAC层模块接收到 表示数据传输错误的 MAC层控制报文后, 判断重传是否达到了预先设 定的最大重传次数, 如果达到了最大重传次数, 丢弃緩存的数据包 X, 结束本流程; 如果没有达到最大重传次数, 则 UE的 MAC层模块对緩 存的数据包 X进行重新进行 MAC层处理, 并发送至 UE的物理层模块 进行发送处理, 执行步骤 708及其后续步骤。 图 7中的步骤 706 ~ 707 以控制报文 P0的情况为例。
步骤 708 ~ 709: UE物理层传输数据包 X到 NB物理层模块; NB 物理层模块判断数据接收是否正确, 如果是, 则生成表示接收正确的控 制才艮文 P1并对其发送处理, 执行步驟 710及其后续步骤, 同时执行步 骤 710'及其后续步骤; 否则生成表示接收不正确的控制报文 P0并对其 进行发送处理, 执行步骤 710及其后续步骤。 图 7中的步骤 709以接收 正确的情况为例。
步驟 710 ~ 711: NB物理层模块传输控制报文 P1或 P0到 UE物理 层模块; UE物理层模块对控制报文 P1或 P0进行接收处理, 如果接收 到控制报文 P1 , 则通过解析控制报文 P1 获知数据包 X传输正确, 向 UE的 MAC层模块发送表示数据传输正确的 MAC层控制报文, UE的 MAC层模块接收到表示数据传输正确的 MAC层控制报文后,丟弃緩存 的数据包 X, 结束本流程, 如果 UE物理层模块接收到控制报文 P0, 则 通过解析控制报文 P0获知数据包 X传输不正确,向 UE的 MAC层模块 发送表示数据传输错误的 MAC层控制报文, UE的 MAC层模块接收到 表示数据传输错误的 MAC层控制报文后, 对緩存的数据包 X重新进行 MAC层处理, 并发送至 UE的物理层模块进行进行发送处理, 重复执行 步骤 708 ~ 711 , 直到 UE的 MAC层模块接收到表示 NB物理层模块接 收正确的控制报文 P1 ,或者达到最大重传次数为止。图 7中的步骤 710 ~ 711以控制 艮文 P1的情况为例。
步骤 710' ~ 711': B物理层模块通过 RNC物理层模块、 MAC层模 块传输数据包 X到 RNC的 RLC层模块; RNC的 RLC层模块解封装数 据包 X, 传输高层数据报文到 RLC层模块上层。
其中, 物理层控制报文 P1和 P0的格式没有具体限制, 作为数据接 收情况报文, 在最筒单的情况下, 它们可以是 1位二值字符。 另外, 步 驟 705和步骤 709中, B物理层模块可以在对数据进行解调、 解扩和 信道编码等接收处理后, 根据数据中的效验位来确定数据接收是否正 确。
实施例二: 本实施例中, 发送侧的 RLC层模块緩存当前的 RLC层 数据,发送侧 RLC层模块根据接收侧的物理层模块回复的数据接收情况 报文确定是否重传当前数据。
图 8是本发明实施例二的数据传输流程, 该图以从 UE侧发送上行 RLC层数据包 X到 UTRAN侧的情况为例, 具体包括以下步驟:
步驟 801 ~ 805: UE的 RLC层模块接收到来自 RLC层上层的高层 数据报文后, 在其上添加与 RLC相关的控制信息并封装为 RLC层数据 包 X, 緩存数据包 X; UE的 RLC层模块传输数据包 X到 UE的 MAC 层模块, 经过 MAC层处理后将包括该数据包 X的数据发送至 UE物理 层模块; UE物理层模块对接收的包括数据包 X的数据进行发送处理; UE物理层模块传输包括数据包 X的数据到 NB物理层模块; NB物理层 模块判断数据接收是否正确, 如果是, 则生成表示接收正确的物理层控 制报文 P1并对其进行发送处理, 执行步骤 806及其后续步骤, 同时在 对数据包 X进行接收处理后通过 RNC的物理层模块和 MAC层模块将 之传输到 RNC的 RLC层模块,由 RNC的 RLC层模块对数据包 X进行 解封装并传输高层数据报文到 RLC层上层,否则生成表示接收不正确的 物理层控制报文 P0并对其进行发送处理, 执行步骤 806及其后续步骤。 图 8中的步骤 805以接收不正确的情况为例。
步骤 806 ~ 809: NB物理层模块传输控制报文 P1或 P0到 UE物理 层模块; UE物理层模块对控制报文 P1或 P0进行接收处理, 根据控制 报文 P1或 P0的解析结果获知数据包 X传输正确与否,并生成表征数据 包 X传输正确与否的相应控制报文 R1或 R0,该控制报文为 UE的 RLC 层模块能够识别的报文,然后通过 UE的 MAC层模块处理后传输 R1或 R0到 UE的 RLC层模块; UE的 RLC层模块解析控制报文 R1或 R0, 获知数据包 X传输正确与否, 如果 UE的 RLC层模块接收到控制 艮文 R1 , 则丟弃数据包 X, 结束本流程, 如果 UE的 RLC层模块接收到控制 报文 R0,则执行步骤 810及其后续步骤。 图 8中的步驟 806以控制报文 P0的情况为例, 相应地, 图 8中步骤 807 ~ 809以控制报文 R0的情况 为例。
步骤 810 - 813: UE的 RLC层模块判断重新发送数据包 X是否达 到了最大重传次数, 如果是, 则直接丢弃数据包 X或发起复位过程; 如 果没有达到最大重传次数,则传输緩存数据包 X到 UE的 MAC层模块, 经过 MAC层处理后将包括该数据包 X的数据发送至 UE物理层模块; UE物理层模块对接收的包括数据包 X的数据进行发送处理; UE物理层 模块传输包括数据包 X的数据到 NB物理层模块; NB物理层模块判断 数据接收是否正确, 如果是, 则生成表示接收正确的物理层控制报文 P1 并对其进行发送处理, 执行步驟 814及其后续步骤, 同时执行步骤 814' 和 815', 否则生成表示接收不正确的物理层控制报文 P0并对其进行发 送处理, 执行步骤 814及其后续步骤。 图 8中的步骤 813以接收正确的 情况为例。
步骤 814 ~ 817: NB物理层模块传输控制报文 P1或 P0到 UE物理 层模块; UE物理层模块对控制报文 P1或 P0进行接收处理, 根据控制 报文 P1或 P0的解析结果获知数据包 X传输正确与否 ,并生成表征数据 包 X传输正确与否的相应控制报文 R1或 R0,该控制报文为 UE的 RLC 层模块能够识别的报文,然后通过 UE的 MAC层模块处理后传输 R1或 R0到 UE的 RLC层模块; UE的 RLC层模块解析控制报文 R1或 R0, 获知数据包 X传输正确与否, 如果 UE的 RLC层模块接收到控制报文 R1 , 则丢弃緩存的数据包 X, 结束本流程, 如果 UE的 RLC层模块接收 到控制报文 R0, 则重复执行步驟 810 ~ 817。 图 8中的步驟 814以控制 报文 P1的情况为例, 相应地, 图 8中步骤 815 - 817以控制报文 R1的 情况为例。
814' ~ 815': NB物理层模块通过 RNC的物理层模块和 MAC层模块 传输数据包 X到 RNC的 RLC层模块; RNC的 RLC层模块解封装数据 包 X, 传输高层数据报文到 RLC层模块上层。
其中, 物理层控制报文 P1和 P0以及从物理层发送到 RLC层的控制报 文 R1的 R0的格式没有具体限制,作为数据接收情况报文,在最筒单的情 况下, 它们可以是 1位二值字符。 另外, 步驟 805和步骤 813中, NB物理 层模块可以在对数据进行解调、 解扩和信道编码等接收处理后, 根据数 据中的效验位来确定数据接收是否正确。 以上所述仅为本发明的较佳实施例而已, 并不用以限制本发明, 凡在本发明的精神和原则之内,所做的任何修改、等同替换、改进等, 均应包含在本发明的保护范围之内。

Claims

权利要求书
1、一种无线数据传输方法,适用于用户终端设备 UE侧和陆地无线 接入网 UTRAN侧之间的无线链路控制 RLC层数据传输, 其特征在于, 发送侧緩存当前 RLC层数据, 该方法包括:
A、 发送侧发送所述当前 RLC层数据到接收侧, 当接收侧物理层确 定数据接收错误时, 执行步驟 B;
B、 接收侧物理层生成并回复表示接收错误的数据接收情况报文给 发送侧, 发送侧传输緩存的所述当前 RLC层数据到接收侧。
2、 如权利要求 1 所述的无线数据传输方法, 其特征在于, 步骤 B 中 , 发送侧传输緩存的所述当前 RLC层数据到接收侧之前进一步包括: 发送侧判断重新发送所述当前 RLC层数据是否达到了预先设定的最大 重传次数,如果是,则丟弃緩存的所述当前 RLC层数据或发起复位处理; 否则, 执行所述发送侧传输緩存的所述当前 RLC层数据到接收侧的步 骤。
3、 如权利要求 1 所述的无线数据传输方法, 其特征在于, 步骤 A 中进一步包括: 当接收侧物理层确定当前接收正确时, 执行步驟 C:
C、 接收侧物理层通过媒体访问控制 MAC层传输当前 RLC层数据 到接收侧 RLC层,生成并回复表示接收正确的数据接收情况报文给发送 侧, 发送侧丢弃緩存的当前 RLC层数据。
4、 如权利要求 3 所述的无线数据传输方法, 其特征在于, 所述步 骤 B后进一步包括: 接收侧物理层判断当前接收是否正确, 如果是, 则 执行所述步骤 C, 否则执行所述步骤 B。
5、 如权利要求 3 所述的无线数据传输方法, 其特征在于, 发送侧 RLC层緩存当前 RLC层数据,
所述步骤 B为:接收侧物理层生成并回复表示接收错误的数据接收 情况报文至发送侧, 发送侧物理层根据该数据接收情况报文生成对应的 RLC层能够识别的数据接收情况报文, 并通过 MAC层发送至 RLC层, 发送侧 LC层根据该数据接收情况报文将所述緩存当前 RLC层数据通 过发送侧 MAC层、 物理层发送到接收侧;
所述步驟 C为:接收侧物理层通过接收侧 MAC层传输当前 RLC层 数据到接收侧 RLC层,生成并向发送侧回复表示接收正确的数据接收情 况报文,发送侧物理层根据该数据接收情况报文生成对应的 RLC层能够 识别的数据接收情况报文, 并通过 MAC层发送给发送侧 RLC层, 发送 侧 RLC层根据接收的该数据接收情况报文丢弃緩存的所述当前 RLC层 数据。
6、 如权利要求 3 所述的无线数据传输方法 , 其特征在于, 发送侧 MAC层緩存当前 RLC层数据,
所述步驟 B为: 接收侧物理层生成并回复表示接收错误的数据接收 情况报文给发送侧物理层, 发送侧物理层根据该数据接收情况报文生成 对应的 MAC层能够识别的数据接收情况报文, 并发送给发送侧 MAC 层,发送侧 MAC层根据接收的数据接收情况报文将所述当前 RLC层数 据通过发送侧物理层发送到接收侧;
所述步骤 C为:接收侧物理层通过接收侧 MAC层传输当前 RLC层 数据到接收侧 RLC层,生成并回复表示接收正确的数据接收情况报文给 发送侧物理层,发送侧物理层根据该数据接收情况报文生成对应的 MAC 层能够识别的数据接收情况报文,并发送给发送侧 MAC层,发送侧 MAC 层根据接收的数据接收情况报文丢弃緩存的所述当前 RLC层数据。 '
7、如权利要求 1 ~ 6中任一所述的无线数据传输方法,其特征在于, 所述接收侧物理层在接收到来自发送侧物理层的数据后, 对数据进行接 收处理后, 根据数据中的效验位来确定数据接收是否正确。
8、 如权利要求 1 ~ 6中任一项所述的无线数据传输方法, 其特征在 于,
所述发送侧是 UE侧, 所述发送侧 RLC层是 UE侧 RLC层, 所述 发送侧 MAC层是 UE的 MAC层, 所述发送侧物理层是 UE物理层; 所 述接收侧是 UTRAN侧, 所述接收侧 RLC层是无线网络控制器 RNC的 RLC层, 所述接收侧 MAC层是 RNC的 MAC层, 所述接收侧物理层是 基站 B物理层;
或者,所述发送侧是 UTRAN侧,所述发送侧 RLC层是 RNC的 RLC 层, 所述发送侧 MAC层是 R C的 MAC层, 所述发送侧物理层是 B 物理层,
所述接收侧是 UE侧, 所述接收侧 RLC层是 UE的 RLC层, 所述 接收侧 MAC层是 UE的 MAC层, 所述接收侧物理层是 UE物理层。
9、 一种发送系统, 其特征在于, 该发送系统中包括: 数据緩存模 块和物理层模块; 其中,
数据緩存模块用于緩存需要发送的 RLC层数据;
物理层模块用于获取所述数据緩存模块中的 RLC层数据,并进行处 理后将其发送到接收侧,以及根据来自接收侧的表示所述 RLC层数据接 收错误的数据接收情况报文, 重新发送所述 RLC层数据。
10、 根据权利要求 9所述的发送系统, 其特征在于, 所述物理层模 块进一步用于根据来自接收侧的表示所述 RLC层数据接收正确的数据 接收情况报文, 丢弃所述数据緩存模块中的所述 RLC层数据。
11、 根据权利要求 9或 10所述的发送系统, 其特征在于, 该发送系统中进一步包括: 包括所述数据緩存模块的 MAC层模块, 用于接收 RLC层数据包, 将该 RLC层数据包緩存到数据緩存模块中, 对该 RLC层数据包进行 MAC层处理后, 将包括 RLC层数据包的数据 发送至物理层模块, 并根据来自物理层模块的表示数据接收错误的数据 接收情况报文,重新读取緩存的对应 RLC层数据包并在进行 MAC层处 理后发送至物理层模块; 以及根据来自物理层模块的表示数据接收错误 的数据接收情况报文, 丟弃数据緩存模块中的对应 RLC层数据包; 所述物理层模块接收来自接收 MAC层模块的包括 LC层数据包的 数据, 将其发送到接收侧, 并解析接收的来自接收侧表示数据接收错误 或正确的数据接收情况报文, 向 MAC层模块对应发送其能够识别的表 示数据接收错误或正确的数据接收情况报文, 以及重新接收来自 MAC 层模块的包括所述 RLC层数据包的数据, 将其发送给接收侧。
12、 根据权利要求 10 所述的发送系统, 其特征在于, 该系统中进 一步包括: 包括所述数据緩存模块的 RLC层模块, 和 MAC层模块; 所述 RLC层模块用于将数据緩存模块中的 RLC层数据处理后, 发 送 RLC层数据包至 MAC层, 并根据来自 MAC层模块的表示数据接收 错误的数据接收情况报文,重新将所述緩存的 RLC层数据处理后发送至 MAC层模块;以及根据来自 MAC层模块的表示数据接收正确的数据接 收情况报文, 丢弃数据緩存模块中的所述 RLC层数据;
MAC层用于对接收的 RLC数据包进行 MAC层处理后发送包括 RLC层数据包的数据到物理层模块,以及将来自物理层模块的表示数据 接收情况的报文进行 MAC层处理后转发至 RLC层模块;
则所述物理层模块接收来自 MAC层模块的所述包括 RLC层数据包 的数据, 将其发送到接收侧, 并根据接收的表示数据接收错误或正确的 数据接收情况报文, 向 MAC层模块对应发送表示数据接收错误或正确 的数据接收情况报文, 以及重新接收来自 MAC层模块的包括所述 RLC 层数据包的数据, 并发送给接收侧。
13、 根据权利要求 9、 10或 12所述的发送系统, 其特征在于, 所 述的物理层模块、 MAC层模块和 RLC层模块分别为 UE的物理层模块、 MAC层模块和 RLC层模块; 或者, 所述的物理层模块为 NB的物理层 模块,所述的 MAC层模块和 RLC层模块为 RNC的 MAC层模块和 RLC 层模块。
14、 一种接收系统, 其特征在于, 该接收系统中包括: 物理层模块、 MAC层模块和 RLC层模块;
所述物理层模块用于通过 MAC层向 RLC层传送接收正确的 RLC 层数据, 以及接收来自发送侧的 RLC层数据, 确定该 RLC层数据传输 是否正确,并根据确定出的该 RLC层数据接收错误的结果,向发送侧返 回表示接收错误的数据接收情况报文;
RLC层模块用于通过 MAC层接收来自物理层模块的 RLC层数据。
15、 根据权利要求 14 所述的接收系统, 其特征在于, 所述物理层 模块进一步用于根据确定出的所述 RLC层数据接收正确的结果,向发送 侧返回表示接收正确的数据接收情况报文。
16、 根据权利要求 14或 15所述的接收系统, 其特征在于, 所述的 物理层模块、 MAC层模块和 RLC层模块分别为 UE的物理层模块、 MAC 层模块和 RLC层模块; 或者, 所述的物理层模块为 NB的物理层模块, 所述的 MAC层模块和 RLC层模块为 RNC的 MAC层模块和 RLC层模 块。
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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101420363B (zh) * 2007-10-25 2011-05-18 联芯科技有限公司 数据传输控制方法、装置及用户设备
US20100027503A1 (en) * 2008-07-31 2010-02-04 Qualcomm Incorporated Method and apparatus for reducing data loss during handover in a wireless communication system
CN103491601B (zh) 2012-09-17 2017-06-09 英特尔公司 在使用选择确认机制的通信系统中接入基站的方法和装置
CN103490868B (zh) * 2012-09-19 2019-03-15 英特尔公司 反向链路数据重传方法以及使用该方法的装置
WO2014194493A1 (zh) * 2013-06-05 2014-12-11 华为技术有限公司 一种减少传输控制层确认报文的方法、装置和系统
CN108605055A (zh) 2016-02-01 2018-09-28 高通股份有限公司 串行链路中的可编程分布式数据处理
US20170222686A1 (en) * 2016-02-01 2017-08-03 Qualcomm Incorporated Scalable, high-efficiency, high-speed serialized interconnect
US10159053B2 (en) 2016-02-02 2018-12-18 Qualcomm Incorporated Low-latency low-uncertainty timer synchronization mechanism across multiple devices

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020075867A1 (en) * 2000-10-11 2002-06-20 Christoph Herrmann Wireless network with a data exchange according to the ARQ method
CN1454017A (zh) * 2002-04-26 2003-11-05 Lg电子株式会社 轮询无线链路控制层的协议数据单元的方法和系统
CN1669263A (zh) * 2002-09-24 2005-09-14 艾利森电话股份有限公司 用于容错数据传输的方法和装置,其中执行错误数据重传直到剩余错误数量可接受

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100446502B1 (ko) * 2001-06-11 2004-09-04 삼성전자주식회사 이동 통신 시스템의 데이터 재전송 장치 및 방법
CN1154305C (zh) * 2001-09-25 2004-06-16 华为技术有限公司 推动无线链路控制层数据发送窗口快速滑动的方法及装置
US6901063B2 (en) * 2002-05-13 2005-05-31 Qualcomm, Incorporated Data delivery in conjunction with a hybrid automatic retransmission mechanism in CDMA communication systems
US7280513B2 (en) * 2003-06-10 2007-10-09 Lucent Technologies Inc. Method of transmission of a data frame from a first station to a second station, and a CDMA telecommunications network
US7239870B2 (en) * 2003-11-05 2007-07-03 Ipr Licensing, Inc. Wireless communication method and apparatus with reconfigurable architecture for supporting an enhanced uplink soft handover operation
US20050152350A1 (en) * 2003-12-22 2005-07-14 Nak-Woon Sung System and method for transmitting/receiving automatic repeat request
KR100592412B1 (ko) * 2004-01-05 2006-06-22 삼성전자주식회사 실시간 트래픽 특성을 고려하여 큐를 관리하는 액세스네트워크 장치 및 그 큐 관리 방법
US7864799B2 (en) * 2004-08-31 2011-01-04 Telefonaktiebolaget Lm Ericsson (Pub) Communication device
US7181667B2 (en) * 2005-01-04 2007-02-20 Motorola, Inc. Method and apparatus for modulating radio link control (RLC) ACK/NAK persistence to improve performance of data traffic
JP2009506599A (ja) * 2005-08-24 2009-02-12 テレフオンアクチーボラゲット エル エム エリクソン(パブル) データユニット送信方法
US7761767B2 (en) * 2005-10-21 2010-07-20 Interdigital Technology Corporation Method and apparatus for retransmission management for reliable hybrid ARQ process
GB0616682D0 (en) * 2006-08-22 2006-10-04 Nec Corp Mobile telecommunications

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020075867A1 (en) * 2000-10-11 2002-06-20 Christoph Herrmann Wireless network with a data exchange according to the ARQ method
CN1454017A (zh) * 2002-04-26 2003-11-05 Lg电子株式会社 轮询无线链路控制层的协议数据单元的方法和系统
CN1669263A (zh) * 2002-09-24 2005-09-14 艾利森电话股份有限公司 用于容错数据传输的方法和装置,其中执行错误数据重传直到剩余错误数量可接受

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