WO2015161791A1 - 一种rlc层的数据包处理方法和rlc实体 - Google Patents

一种rlc层的数据包处理方法和rlc实体 Download PDF

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Publication number
WO2015161791A1
WO2015161791A1 PCT/CN2015/077161 CN2015077161W WO2015161791A1 WO 2015161791 A1 WO2015161791 A1 WO 2015161791A1 CN 2015077161 W CN2015077161 W CN 2015077161W WO 2015161791 A1 WO2015161791 A1 WO 2015161791A1
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Prior art keywords
state variable
data packet
initial value
rlc entity
value
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PCT/CN2015/077161
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English (en)
French (fr)
Inventor
张惠英
赵亚利
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电信科学技术研究院
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Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Priority to KR1020167032735A priority Critical patent/KR101927081B1/ko
Priority to EP15782838.5A priority patent/EP3136665B1/en
Priority to US15/306,106 priority patent/US20170048150A1/en
Priority to JP2016564201A priority patent/JP6338694B2/ja
Publication of WO2015161791A1 publication Critical patent/WO2015161791A1/zh

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    • 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
    • H04L47/34—Flow control; Congestion control ensuring sequence integrity, e.g. using sequence numbers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/04—Registration at HLR or HSS [Home Subscriber Server]
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a packet processing method and an RLC entity of a Radio Link Control (RLC) layer in Device to Device (D2D) communication.
  • RLC Radio Link Control
  • LTE Long Term Evolution
  • communication devices use the centralized control mode of the network to communicate, that is, the uplink and downlink data of the user equipment (User Equipment, UE) are transmitted and received under the control of the network.
  • the communication between the UE and the UE is forwarded and controlled by the network, and there is no direct communication link between the UE and the UE.
  • D2N Device to Network, device
  • the protocol layer of the LTE radio interface includes: a physical layer, a data link layer, and a Radio Resource Control (RRC) layer.
  • the data link layer is further divided into a Media Access Control (MAC), an RLC layer, and a Packet Data Convergence Protocol (PDCP) layer.
  • MAC Media Access Control
  • RLC Packet Data Convergence Protocol
  • the functions of the RLC layer are implemented by the RLC entity. If an RLC entity is configured at the base station (eNB), then there will be one peer RLC entity configured on the UE side and vice versa.
  • the RLC entity may use transparent mode (TM), unacknowledged mode (UM) or acknowledge mode (AM) when performing data transmission.
  • TM transparent mode
  • UM unacknowledged mode
  • AM acknowledge mode
  • the UM RLC entity can be configured to send a UM RLC entity or receive a UM RLC entity.
  • the transmitting UM RLC entity receives the RLC SDU from the upper layer and sends the RLC PDU through the lower layer to the receiving UM RLC entity of the peer.
  • the receiving UM RLC entity receives the RLC PDU of the peer through the lower layer.
  • each receiving UM RLC entity maintains the following state variables:
  • VR (UH) stores the next SN of the highest serial number (SN) in the currently received data packet as the upper boundary of the reordering window.
  • the reordering window is defined as (VR(UH) - UM_Window_Size) ⁇ SN ⁇ VR(UH), where UM_Window_Size is the size of the reordering window, and the reordering window is determined by the highest SN that has been received.
  • the initial value of VR(UH) is 0.
  • VR (UX) The SN of the UMD PDU that triggers the reordering timer (T-Reordering), which is the VR (UH) value of the T-Reordering start time.
  • D2D Discovery Device to Device Discovery
  • D2D Device to Device Communication
  • D2D Discovery means that the UE uses the Evolved UMTS Terrestrial Radio Access (E-UTRA; Universal Mobile Telecommunications System, UMTS) to confirm that another UE is in its vicinity.
  • E-UTRA Evolved UMTS Terrestrial Radio Access
  • UMTS Universal Mobile Telecommunications System
  • the D2D UE can use the service to find nearby taxis, find friends nearby, and the like;
  • D2D Communication refers to UEs that are close to each other.
  • the communication link originally transmitted through the network is converted into a local direct communication link, saving A large amount of bandwidth and network efficiency; or two close to each other, can use direct link communication to obtain stable high-speed and low-cost communication services.
  • Proximity service communication is generally performed under network side control or assistance, and the eNB may even dynamically allocate resources for UEs performing proximity service communication.
  • the embodiment of the present application provides a data packet processing method and an RLC entity of an RLC layer.
  • a VR (UH) state variable and a VR (UR) state variable By appropriately setting initial values of a VR (UH) state variable and a VR (UR) state variable, the data packets received by the RLC entity can be located. In the receiving window, the occurrence of the error of discarding the data packet is avoided.
  • a method for processing a data packet of an RLC layer includes:
  • the RLC entity sets an initial value for the VR (UH) state variable and the VR (UR) state variable of the RLC layer according to the received sequence number SN of the first data packet;
  • the RLC entity processes the currently received data packet according to the SN of the currently received data packet and the current value of the VR (UH) state variable and the VR (UR) state variable, and updates the VR (UH) State variables and current values of the VR(UR) state variables.
  • the RLC entity is configured according to the SN of the first data packet received.
  • Set initial values for the VR (UH) state variables and VR (UR) state variables of the RLC layer including:
  • the RLC entity After receiving the first data packet, the RLC entity determines the SN of the first data packet, and sets an initial value of the VR (UH) state variable and the VR (UR) state variable to the first one.
  • the SN of the packet After receiving the first data packet, the RLC entity determines the SN of the first data packet, and sets an initial value of the VR (UH) state variable and the VR (UR) state variable to the first one.
  • the SN of the packet After receiving the first data packet, the RLC entity determines the SN of the first data packet, and sets an initial value of the VR (UH) state variable and the VR (UR) state variable to the first one.
  • the RLC entity sets an initial value for the VR (UH) state variable and the VR (UR) state variable of the RLC layer according to the received SN of the first data packet, including:
  • the RLC entity After receiving the first data packet, the RLC entity determines the SN of the first data packet, and sets an initial value of the VR (UH) state variable to the SN of the first data packet, and The initial value of the VR (UR) state variable is set to the difference between the initial value of the VR (UH) state variable and the set reordering window size.
  • the RLC entity sets an initial value for the VR (UR) state variable, including:
  • the RLC entity sets an initial value of the VR (UR) state variable to a value obtained by modulo the difference between the initial value of the VR (UH) state variable and the set reordering window size.
  • the RLC entity sets the initial value of the VR (UR) state variable to an initial value of the VR (UH) state variable and a set reordering window.
  • the difference in size is the value after the modulo 32 operation;
  • the RLC entity sets the initial value of the VR (UR) state variable to the difference between the initial value of the VR (UH) state variable and the set reordering window size. The value after the modulo 1024 operation is performed.
  • An embodiment of the present application provides an RLC entity, where the RLC entity includes:
  • a setting module configured to set an initial value for a VR (UH) state variable and a VR (UR) state variable of the RLC layer according to the received SN of the first data packet;
  • a processing module configured to process the currently received data packet according to the current SN of the currently received data packet and the current values of the VR (UH) state variable and the VR (UR) state variable configured in the RLC layer, and update the The current value of the VR (UH) state variable and the VR (UR) state variable.
  • the setting module is specifically configured to:
  • the setting module is specifically configured to:
  • the setting module sets an initial value for the VR (UR) state variable, including:
  • the initial value of the VR (UR) state variable is set to a value obtained by performing a modulo operation on the difference between the initial value of the VR (UH) state variable and the set reorder window size.
  • the setting module is specifically configured to: set an initial value of the VR (UR) state variable to an initial value of the VR (UH) state variable.
  • the setting module is specifically configured to: set an initial value of the VR (UR) state variable to an initial value and a set weight of the VR (UH) state variable.
  • the difference between the sort window sizes is the value after the modulo 1024 operation.
  • the embodiment of the present application further provides another RLC entity, where the RLC entity includes a transceiver and at least one processor connected to the transceiver, where:
  • the transceiver is configured to: receive the data packet sent by the sender, and deliver the processed data packet to the upper layer.
  • the processor is configured to: set an initial value for the VR (UH) state variable and the VR (UR) state variable of the RLC layer according to the received SN of the first data packet; and according to the SN of the currently received data packet And a current value of a VR (UH) state variable and a VR (UR) state variable configured in the RLC layer, processing the currently received data packet, and updating the VR (UH) state variable and the VR (UR) The current value of the state variable.
  • the processor is configured to: after the transceiver receives the first data packet, the VR (UH) state variable and the VR (UR) state variable.
  • the initial value is set to the SN of the first packet.
  • the processor is configured to: after the transceiver receives the first data packet, set an initial value of the VR (UH) state variable to the first data.
  • the SN of the packet, and the initial value of the VR (UR) state variable is set to the difference between the initial value of the VR (UH) state variable and the set reordering window size.
  • the processor is configured to:
  • the initial value of the VR (UR) state variable is set to a value obtained by performing a modulo operation on the difference between the initial value of the VR (UH) state variable and the set reorder window size.
  • the processor is configured to: set an initial value of the VR (UR) state variable to an initial value of the VR (UH) state variable.
  • the processor is configured to: set an initial value of the VR (UR) state variable to an initial value and a set weight of the VR (UH) state variable.
  • the difference between the sort window sizes is the value after the modulo 1024 operation.
  • the RLC entity sets an initial value for the VR (UH) state variable and the VR (UR) state variable of the RLC layer according to the received SN of the first data packet; the RLC entity is configured according to The current SN of the received data packet and the current values of the VR (UH) state variable and the VR (UR) state variable, process the currently received data packet, and update the VR (UH) state variable and VR (UR) state. The current value of the variable. Since the RLC entity sets an initial value for the VR (UH) state variable and the VR (UR) state variable of the RLC layer according to the received SN of the first data packet, the data packet received by the RLC entity can be located in the receiving window. To avoid the occurrence of an error in dropping packets.
  • FIG. 3 is a schematic flowchart of a data packet processing method of an RLC layer according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of an RLC entity according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another RLC entity according to an embodiment of the present application.
  • the data packet received by the RLC entity can be located in the receiving window, thereby avoiding the occurrence of an error in dropping the data packet.
  • an embodiment of the present application provides a data packet processing method of an RLC layer, where the method includes:
  • Step 31 The RLC entity sets an initial value for the VR (UH) state variable and the VR (UR) state variable of the RLC layer according to the received SN of the first data packet.
  • Step 32 The RLC entity processes the currently received data packet according to the current SN of the received data packet and the current values of the VR (UH) state variable and the VR (UR) state variable, and updates the VR (UH) state variable. And the current value of the VR(UR) state variable.
  • the RLC entity sets an initial value for the VR (UH) state variable and the VR (UR) state variable of the RLC layer according to the received SN of the first data packet; the RLC entity according to the currently received data packet.
  • the current value of the SN and VR (UH) state variables and VR (UR) state variables processes the currently received data packet, and updates the current values of the VR (UH) state variable and the VR (UR) state variable. Since the RLC entity sets an initial value for the VR (UH) state variable and the VR (UR) state variable of the RLC layer according to the received SN of the first data packet, the data packet received by the RLC entity can be located in the receiving window. To avoid the situation of incorrectly dropping packets occur.
  • the embodiment of the present application is particularly applicable to D2D communication, because the receiving end of the D2D communication may not receive the first data packet sent from the transmitting end (that is, the data packet with the SN is 0) when receiving the data, resulting in no D2D communication.
  • the initial value is set for the VR (UH) state variable and the VR (UR) state variable of the RLC layer,
  • the data packets received by the RLC entity can be located in the receiving window.
  • the embodiment of the present application is also applicable to other communication systems that are not synchronized because the transmitting end transmits data and the receiving end receives data.
  • the setting of the initial values of the VR (UH) state variable and the VR (UR) state variable includes the following two preferred implementations:
  • the initial values of mode 1, VR (UH) state variable and VR (UR) state variable are both set to the SN of the first packet.
  • step 31 is specifically: after receiving the first data packet, the RLC entity determines the SN of the first data packet, and sets the initial values of the VR (UH) state variable and the VR (UR) state variable to The SN of the first packet.
  • step 32 further includes the following three processing modes:
  • the RLC entity submits the currently received data packet to the upper layer and updates the VR (UH) state variable and the VR (UH) state variable. The current value.
  • the RLC entity discards the current reception. Go to the packet and update the current value of the VR(UH) state variable, keeping the current value of the VR(UH) state variable unchanged.
  • the resizing window size is set to be related to the serial number length of the data packet, which is half the length of the serial number. Specifically, when configured as a 5-bit serial number length, the reordering window size is 16; when configured as a 10-bit serial number length, the reordering window size is 512.
  • the SN of the currently received data packet is compared with the modulo operation of the difference. value. Specifically, if configured as a 5-bit serial number length, the difference is subjected to a modulo 32 operation; if configured as a 10-bit serial number length, the difference is subjected to a modulo 1024 operation.
  • the RLC entity caches the currently received data packet, starts a reordering timer (T-Reordering), and updates the VR (UH) state.
  • T-Reordering reordering timer
  • the RLC entity caches the data packet and updates the current value of the VR (UH) state variable, keeping the current value of the VR (UR) state variable unchanged. Until The SN of the data packet is equal to the current value of the VR (UR) state variable or the reordering timer expires.
  • the RLC entity reorders the buffered data packet and submits it to the upper layer, stops the reordering timer, and updates the VR ( UH) The current value of the state variable and the VR(UR) state variable, where the current value of the updated VR(UH) state variable is the same as the current value of the updated VR(UR) state variable.
  • Embodiment 1 Take SN as the length of 10 bits as an example, that is, SN is from 0 to 1023. It is assumed that the SN order of the data packets received by the RLC entity is 600, 601, 599, 603, 604, 602.
  • the processing procedure of the received data packet in this embodiment is as follows:
  • the RN of the first RLC packet received by the RLC entity is 600.
  • the RLC entity will be a VR (UH) state variable (hereinafter referred to as VR (UH)) and a VR (UR) state variable (hereinafter referred to as VR (hereinafter referred to as VR).
  • the initial value of UR)) is set to 600.
  • the RLC entity submits the data packet with SN 600 to the upper layer and updates VR (UH) and VR (UR), that is, the values of VR (UH) and VR (UR) are set to 601. .
  • the third data packet SN received by the RLC entity is 599. Since (VR(UH)-UM_Window_Size) ⁇ SN ⁇ VR(UR), the RLC entity discards the data packet.
  • the initial value of the VR (UH) state variable is set to the SN of the first data packet, and the initial value of the VR (UR) state variable is set to the initial value of the VR (UH) state variable and the set weight Sorts the difference in window size.
  • step 31 is specifically: after receiving the first data packet, the RLC entity determines the SN of the first data packet, and sets an initial value of the VR (UH) state variable to the first data packet.
  • the SN, and the initial value of the VR (UR) state variable is set to the difference between the initial value of the VR (UH) state variable and the set reordering window size.
  • the RLC entity sets an initial value for the VR (UR) state variable, including:
  • the RLC entity sets the initial value of the VR(UR) state variable to a value that is modulo-operated for the difference between the initial value of the VR(UH) state variable and the set reorder window size.
  • the RLC entity sets the initial value of the VR (UR) state variable to a difference between the initial value of the VR (UH) state variable and the set reordering window size.
  • the RLC entity sets the initial value of the VR (UR) state variable to perform a modulo 1024 operation on the difference between the initial value of the VR (UH) state variable and the set reordering window size. After the value.
  • step 32 is specifically: after receiving the first data packet, the RLC entity caches the first data packet, starts a reordering timer, and updates a VR (UH) state variable and a VR (UR) state variable. Current value
  • the RLC entity processes the currently received data packet based on the current values of the SN and VR (UH) state variables and VR (UR) state variables of the currently received data packet.
  • the RLC entity processes the currently received data packet according to the current value of the SN and VR (UH) state variables and the VR (UR) state variable of the currently received data packet. It includes the following treatment methods:
  • the RLC entity discards the received first data packet and updates the VR (UH) state variable and the VR (UR) state variable. The current value.
  • the RLC entity caches the currently received data packet and updates the current values of the VR (UH) state variable and the VR (UR) state variable. .
  • the RLC entity caches the currently received data packet and updates the VR (UH). The current value of the state variable, keeping the current value of the VR(UR) state variable unchanged.
  • the RLC entity caches the currently received data packet, stops the reordering timer, and weights the buffered data packet. Sort and submit to the upper layer, and update the current value of the VR(UH) state variable, setting the current value of the VR(UR) state variable to be the same as the current value of the VR(UH) state variable. Then the processing of receiving the data packet is the same as mode 1.
  • step 32 further includes: when the reordering timer expires, the RLC entity stops the reordering timer, reorders the buffered data packets and delivers them to the upper layer, and updates the VR (UH) state variable.
  • the current value of the VR(UR) state variable is set to the same value as the current value of the VR(UH) state variable.
  • the SN is 10 bits long, for example, the SN is from 0 to 1023.
  • the RLC entity receives
  • the SN order of the data packets is 600, 601, 599, 603, 604, 602.
  • the processing procedure of the received data packet in this embodiment is as follows:
  • the third data packet SN received by the RLC entity is 599. Since VR(UR) ⁇ SN ⁇ VR(UH), the RLC entity puts the data packet with the SN 599 into the buffer and maintains the value of VR(UH). The value of VR(UR) and the value of VR(UX) are unchanged.
  • the fourth data packet SN received by the RLC entity is 603. Since SN>VR(UH), the RLC entity puts the data packet with the SN 603 into the buffer, and sets the value of the VR (UH) to 604, VR. The value of (UR) is set to 92, keeping the value of VR(UX) unchanged.
  • the above method processing flow can be implemented by a software program, which can be stored in a storage medium, and when the stored software program is called, the above method steps are performed.
  • the embodiment of the present application further provides an RLC entity.
  • the RLC entity includes:
  • the setting module 41 is configured to set an initial value for the VR (UH) state variable and the VR (UR) state variable of the RLC layer according to the received SN of the first data packet;
  • the processing module 42 is configured to process and update the currently received data packet according to the current SN of the currently received data packet and the current values of the VR (UH) state variable and the VR (UR) state variable configured in the RLC layer.
  • the VR (UH) state variable and the current value of the VR (UR) state variable are configured to process and update the currently received data packet according to the current SN of the currently received data packet and the current values of the VR (UH) state variable and the VR (UR) state variable configured in the RLC layer.
  • the VR (UH) state variable and the current value of the VR (UR) state variable are configured to process and update the currently received data packet according to the current SN of the currently received data packet and the current values of the VR (UH) state variable and the VR (UR) state variable configured in the RLC layer.
  • the VR (UH) state variable and the VR (UR) state The initial values of the variables are all set to the SN of the first packet.
  • the setting module 41 is specifically configured to: after receiving the first data packet, determine the SN of the first data packet, and set the VR (UH) state variable and the VR (UR) state variable.
  • the initial value is set to the SN of the first packet.
  • processing module 42 further includes the following three processing modes:
  • the currently received data packet is delivered to the upper layer, and the current state of the VR (UH) state variable and the VR (UH) state variable is updated. value.
  • the SN of the currently received data packet is greater than the difference between the current value of the VR (UH) state variable and the set reordering window size, and is less than the current value of the VR (UR) state variable, discard the currently received Packet, and update the current value of the VR(UH) state variable, keeping the current value of the VR(UH) state variable unchanged.
  • the SN of the currently received data packet is compared with the modulo operation of the difference. value. Specifically, if configured as a 5-bit serial number length, the difference is subjected to a modulo 32 operation; if configured as a 10-bit serial number length, the difference is subjected to a modulo 1024 operation.
  • the data packet is buffered, and the current value of the VR (UH) state variable is updated, and the current value of the VR (UR) state variable is kept unchanged until The SN of the data packet is equal to the current value of the VR (UR) state variable or the reordering timer expires, the buffered data packet is reordered and delivered to the upper layer, the reordering timer is stopped, and the VR (UH) is updated.
  • the current value of the state variable and the VR(UR) state variable where the current value of the updated VR(UH) state variable is the same as the current value of the updated VR(UR) state variable.
  • an initial value of the VR (UH) state variable is set to an SN of the first data packet, and an initial value of the VR (UR) state variable is set to the VR ( UH) The difference between the initial value of the state variable and the set reordering window size.
  • the setting module 41 is specifically configured to: after receiving the first data packet, determine an SN of the first data packet, and set an initial value of the VR (UH) state variable to the first The SN of a data packet, and the initial value of the VR (UR) state variable is set to the difference between the initial value of the VR (UH) state variable and the set reordering window size.
  • the setting module 41 is specifically configured to:
  • the value of the fixed reordering window size is the value after the modulo operation.
  • the setting module 41 is specifically configured to: set an initial value of the VR (UR) state variable to an initial value and a setting of the VR (UH) state variable. Reordering the difference in window size to perform the value after the modulo 32 operation;
  • the setting module 41 is specifically configured to: set an initial value of the VR (UR) state variable to a reordering of the initial value and the setting of the VR (UH) state variable.
  • the difference in window size is the value after the modulo 1024 operation.
  • the processing module 42 is specifically configured to: after receiving the first data packet, buffer the first data packet, start a reordering timer, and update a VR (UH) state variable and a VR (UR) state variable. Current value
  • the currently received data packet is processed according to the current values of the SN and VR (UH) state variables and VR (UR) state variables of the currently received data packet.
  • the processing module 42 processes the currently received data packet according to the current values of the SN and VR (UH) state variables and the VR (UR) state variable of the currently received data packet. , including the following treatments:
  • the currently received data packet is buffered, and the current values of the VR (UH) state variable and the VR (UR) state variable are updated.
  • the processing module 42 is further configured to: when the reordering timer expires, stop the reordering timer, reorder the buffered data packets and submit to the upper layer, and update the VR (UH) state variable.
  • the current value of the VR(UR) state variable is set to the same value as the current value of the VR(UH) state variable.
  • the RLC entity includes a transceiver 51 and at least one processor 52 coupled to the transceiver 51, wherein:
  • the transceiver 51 is configured to: receive a data packet sent by the transmitting end, and process the data processed by the processor 52. The package is submitted to the top.
  • the processor 52 is configured to: set an initial value for the VR (UH) state variable and the VR (UR) state variable of the RLC layer according to the received SN of the first data packet; and according to the currently received data packet The current values of the VR (UH) state variable and the VR (UR) state variable configured in the SN and the RLC layer, process the currently received data packet, and update the VR (UH) state variable and the VR (UR) The current value of the state variable.
  • the initial values of the VR (UH) state variable and the VR (UR) state variable are both set to the SN of the first data packet.
  • the processor 52 is configured to: after the transceiver 51 receives the first data packet, set the initial values of the VR (UH) state variable and the VR (UR) state variable to the The SN of the first packet.
  • the processor 52 further includes the following three processing modes:
  • the SN of the data packet currently received by the transceiver 51 is equal to the current value of the VR (UH) state variable, the currently received data packet is delivered to the upper layer, and the VR (UH) state variable and VR (UH) are updated. The current value of the state variable.
  • the SN of the data packet currently received by the transceiver 51 is greater than the difference between the current value of the VR (UH) state variable and the set reordering window size, and is less than the current value of the VR (UR) state variable, discard The currently received packet, and the current value of the VR (UH) state variable is updated, keeping the current value of the VR (UH) state variable unchanged.
  • the SN of the currently received data packet is compared with the modulo operation of the difference. value. Specifically, if configured as a 5-bit serial number length, the difference is subjected to a modulo 32 operation; if configured as a 10-bit serial number length, the difference is subjected to a modulo 1024 operation.
  • the data packet is buffered, and the current value of the VR (UH) state variable is updated, and the current value of the VR (UR) state variable is kept unchanged until The SN of the data packet is equal to the current value of the VR (UR) state variable or the reordering timer expires, the buffered data packet is reordered and delivered to the upper layer, the reordering timer is stopped, and the VR (UH) is updated.
  • the current value of the state variable and the VR(UR) state variable where the current value of the updated VR(UH) state variable is the same as the current value of the updated VR(UR) state variable.
  • an initial value of the VR (UH) state variable is set to an SN of the first data packet, and an initial value of the VR (UR) state variable is set to the VR ( UH) The difference between the initial value of the state variable and the set reordering window size.
  • the processor 52 is configured to: after the transceiver 51 receives the first data packet, The initial value of the VR (UH) state variable is set to the SN of the first data packet, and the initial value of the VR (UR) state variable is set to the initial value of the VR (UH) state variable The difference in the size of the reordered window.
  • the processor 52 is configured to specifically:
  • the initial value of the VR (UR) state variable is set to a value obtained by performing a modulo operation on the difference between the initial value of the VR (UH) state variable and the set reorder window size.
  • the processor 52 is configured to: set an initial value of the VR (UR) state variable to an initial value and a setting of the VR (UH) state variable.
  • the value of the fixed reordering window size is the value after the modulo 32 operation;
  • the processor 52 is configured to: set an initial value of the VR (UR) state variable to an initial value and a setting of the VR (UH) state variable.
  • the value of the reordering window size is the value after the modulo 1024 operation.
  • the processor 52 is configured to: after the transceiver 51 receives the first data packet, cache the first data packet, start a reordering timer, and update the VR (UH) state variable and The current value of the VR(UR) state variable;
  • the currently received data packet is processed according to the current values of the SN and VR (UH) state variables and VR (UR) state variables of the currently received data packet.
  • the processor 52 processes the currently received data packet based on the current values of the SN and VR (UH) state variables and VR (UR) state variables of the currently received data packet. , including the following treatments:
  • the SN of the currently received data packet of the transceiver 51 is equal to the current value of the VR (UH) state variable, buffer the currently received data packet, and update the VR (UH) state variable and the VR (UR) state variable. The current value.
  • the processor 52 is further configured to: when the reordering timer expires, stop the reordering timer, reorder the buffered data packets and submit to the upper layer, and update the VR (UH) Current state variable Value, sets the current value of the VR(UR) state variable to be the same as the current value of the VR(UH) state variable.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本申请公开了一种RLC层的数据包处理方法和RLC实体，用于解决现有技术中存在的由于D2D通信中的接收端在接收数据时可能不是从发送端发送的第一个数据包开始接收，而导致接收端错误丢弃数据包的问题。方法包括：RLC实体根据接收到的第一个数据包的序列号SN，为RLC层的VR（UH）状态变量和VR（UR）状态变量设置初始值；以及RLC实体根据当前接收到的数据包的SN以及RLC层中配置的VR（UH）状态变量和VR（UR）状态变量的当前值，对当前接收到的数据包进行处理，并更新VR（UH）状态变量和VR（UR）状态变量的当前值。

Description

一种RLC层的数据包处理方法和RLC实体
本申请要求在2014年4月23日提交中国专利局、申请号为201410165653.5、发明名称为“一种RLC层的数据包处理方法和RLC实体”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，特别涉及一种设备到设备(Device to Device，D2D)通信中无线链路控制(Radio Link Control，RLC)层的数据包处理方法和RLC实体。
背景技术
长期演进(Long Term Evolution，LTE)系统中，通信设备之间采用网络集中控制的方式进行通信，即用户设备(User Equipment，UE)的上下行数据都是在网络的控制下进行发送和接收。UE与UE之间的通信是由网络进行转发和控制的，UE与UE之间不存在直接的通信链路，这种方式下，UE和网络的数据传输可以简称为D2N(Device to Network，设备到网络)传输，其网络架构如图1所示。
LTE无线接口的协议层包括：物理层、数据链路层和无线资源控制(Radio Resource Control，RRC)层。数据链路层进一步分为媒体接入控制(Media Access Control，MAC)、RLC层和分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层。RLC层的职能由RLC实体来实施。如果在基站(eNB)配置了一个RLC实体，那么就会有一个对等的RLC实体配置在UE侧，反之亦然。RLC实体在执行数据传输时，可以采用透明模式(TM)，非确认模式(UM)或确认模式(AM)。
UM RLC实体可以配置为一个发送UM RLC实体或接收UM RLC实体。发送UM RLC实体接收由上层来的RLC SDU，并通过下层发送RLC PDU到对等端的接收UM RLC实体。接收UM RLC实体通过下层接收对等端的RLC PDU。其中，每个接收UM RLC实体维护下列状态变量：
VR(UH)：存储当前接收到的数据包中最高序列号(Serial Number，SN)的下一个SN，作为重排序窗口的上边界。重排序窗口被定义为(VR(UH)-UM_Window_Size)≤SN<VR(UH)，其中，UM_Window_Size为重排序窗口的大小，由已接收到的最高SN确定重排序窗口。VR(UH)初始值为0。
VR(UX)：触发重排序定时器(T-Reordering)启动的UMD PDU的SN，其取值为T-Reordering启动时刻的VR(UH)值。
VR(UR)：需要进行重排序的UMD PDU中的最小值SN。如果VR(UX)≤VR(UR)，则说明待确定接收状态的UMD PDU的状态都已确定，不再需要重排序，此时，停止T-Reordering；如果VR(UH)>VR(UR)，则启动T-Reordering，并且重置VR(UX)＝VR(UH)。VR(UR)初始值为0。
为了更好的满足用户需求，提升设备之间信息交互的效率，在移动通信系统中，引入了设备到设备发现(Device to Device Discovery，D2D Discovery)以及设备到设备通信(Device to Device Communication，D2D Communication)的机制。其中：
D2D Discovery是指：UE使用演进通用移动通信系统陆地无线接入(Evolved UMTS Terrestrial Radio Access，E-UTRA；Universal Mobile Telecommunications System，UMTS)来确认另外一个UE在其附近。例如，D2D UE可以使用该服务来寻找附近的出租车、寻找在其附近的朋友等；
D2D Communication是指：相互接近的UE，通过在两个UE之间直接建立链路(如图2所示)，这样将原本通过网络传输的通信链路转化为本地的直接通信链路，节省了大量的带宽和网络效率；或者两个相互接近的UE，可以利用直接链路通信来获得稳定高速低廉的通信服务。接近服务通信一般是在网络侧控制或者辅助下进行的，eNB甚至可能会为进行接近服务通信的UE动态的分配资源。
D2D通信系统中，发送端发送了D2D数据后，接收端有可能不是从SN＝0的数据包开始接收，即D2D通信没有固定的起始点，因此，若两个D2D UE之间采用D2N Communication中的RLC协议，即VR(UH)和VR(UR)初始值都为0，则接收端的RLC层接收到的数据包的SN很可能已超出重排序窗口，而导致丢包。
发明内容
本申请实施例提供了一种RLC层的数据包处理方法和RLC实体，通过合理设置VR(UH)状态变量和VR(UR)状态变量的初始值，使得RLC实体接收到的数据包都能位于接收窗内，避免了错误丢弃数据包的情况的发生。
本申请实施例提供的一种RLC层的数据包处理方法，该方法包括：
RLC实体根据接收到的第一个数据包的序列号SN，为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值；
RLC实体根据当前接收到的数据包的SN以及所述VR(UH)状态变量和所述VR(UR)状态变量的当前值，对当前接收到的数据包进行处理，并更新所述VR(UH)状态变量和所述VR(UR)状态变量的当前值。
在实施中，作为第一种优选的实现方式，RLC实体根据接收到的第一个数据包的SN， 为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值，包括：
RLC实体在接收到第一个数据包后，确定所述第一个数据包的SN，并将所述VR(UH)状态变量和VR(UR)状态变量的初始值设置为所述第一个数据包的SN。
在实施中，作为第二种优选的实现方式，RLC实体根据接收到的第一个数据包的SN，为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值，包括：
RLC实体在接收到第一个数据包后，确定所述第一个数据包的SN，并将所述VR(UH)状态变量的初始值设置为所述第一个数据包的SN，以及将所述VR(UR)状态变量的初始值设置为所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值。
较佳地，若所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值小于零，RLC实体为所述VR(UR)状态变量设置初始值，包括：
RLC实体将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模操作后的值。
较佳地，若预先配置的SN长度为5比特，则RLC实体将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模32操作后的值；
若预先配置的SN长度为10比特，则RLC实体将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模1024操作后的值。
本申请实施例提供了一种RLC实体，该RLC实体包括：
设置模块，用于根据接收到的第一个数据包的SN，为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值；
处理模块，用于根据当前接收到的数据包的SN以及RLC层中配置的VR(UH)状态变量和VR(UR)状态变量的当前值，对当前接收到的数据包进行处理，并更新所述VR(UH)状态变量和所述VR(UR)状态变量的当前值。
在实施中，作为第一种优选的实现方式，所述设置模块具体用于：
在接收到第一个数据包后，确定第一个数据包的SN，并将所述VR(UH)状态变量和VR(UR)状态变量的初始值设置为所述第一个数据包的SN。
在实施中，作为第二种优选的实现方式，所述设置模块具体用于：
在接收到第一个数据包后，确定第一个数据包的SN，并将所述VR(UH)状态变量的初始值设置为所述第一个数据包的SN，以及将所述VR(UR)状态变量的初始值设置为所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值。
较佳地，若所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值小于零，所述设置模块为所述VR(UR)状态变量设置初始值，包括：
将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模操作后的值。
较佳地，若预先配置的SN长度为5比特，则所述设置模块具体用于：将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模32操作后的值；
若预先配置的SN长度为10比特，则所述设置模块具体用于：将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模1024操作后的值。
本申请实施例还提供了另一种RLC实体，该RLC实体包括收发信机、以及与该收发信机连接的至少一个处理器，其中：
收发信机被配置用于：接收发送端发送的数据包，以及将处理器处理后的数据包递交至高层。
处理器被配置用于：根据接收到的第一个数据包的SN，为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值；以及根据当前接收到的数据包的SN以及RLC层中配置的VR(UH)状态变量和VR(UR)状态变量的当前值，对当前接收到的数据包进行处理，并更新所述VR(UH)状态变量和所述VR(UR)状态变量的当前值。
在实施中，作为第一种优选的实现方式，处理器被配置具体用于：在收发信机接收到第一个数据包后，将所述VR(UH)状态变量和VR(UR)状态变量的初始值设置为所述第一个数据包的SN。
作为第二种优选的实现方式，处理器被配置具体用于：在收发信机接收到第一个数据包后，将所述VR(UH)状态变量的初始值设置为所述第一个数据包的SN，并将所述VR(UR)状态变量的初始值设置为所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值。
较佳地，若所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值小于零，处理器被配置具体用于：
将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模操作后的值。
较佳地，若预先配置的SN长度为5比特，则处理器被配置具体用于：将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模32操作后的值；
若预先配置的SN长度为10比特，则处理器被配置具体用于：将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模1024操作后的值。
本申请实施例提供的方法和RLC实体中，RLC实体根据接收到的第一个数据包的SN，为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值；RLC实体根据当前接收到的数据包的SN以及VR(UH)状态变量和VR(UR)状态变量的当前值，对当前接收到的数据包进行处理，并更新VR(UH)状态变量和VR(UR)状态变量的当前值。由于RLC实体根据接收到的第一个数据包的SN，为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值，使得RLC实体接收到的数据包都能位于接收窗口内，避免了错误丢弃数据包的情况的发生。
附图说明
图1为背景技术中提供的D2N通信的架构图；
图2为背景技术中提供的D2D通信的架构图；
图3为本申请实施例提供的一种RLC层的数据包处理方法的流程示意图；
图4为本申请实施例提供的一种RLC实体的示意图；
图5为本申请实施例提供的另一种RLC实体的示意图。
具体实施方式
本申请通过合理设置VR(UH)状态变量和VR(UR)状态变量的初始值，使得RLC实体接收到的数据包都能位于接收窗内，避免了错误丢弃数据包的情况的发生。
下面结合说明书附图对本申请实施例作进一步详细描述。应当理解，此处所描述的实施例仅用于说明和解释本申请，并不用于限定本申请。
如图3所示，本申请实施例提供了一种RLC层的数据包处理方法，该方法包括：
步骤31、RLC实体根据接收到的第一个数据包的SN，为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值。
步骤32、RLC实体根据当前接收到的数据包的SN以及VR(UH)状态变量和VR(UR)状态变量的当前值，对当前接收到的数据包进行处理，并更新VR(UH)状态变量和VR(UR)状态变量的当前值。
本申请实施例中，RLC实体根据接收到的第一个数据包的SN，为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值；RLC实体根据当前接收到的数据包的SN以及VR(UH)状态变量和VR(UR)状态变量的当前值，对当前接收到的数据包进行处理，并更新VR(UH)状态变量和VR(UR)状态变量的当前值。由于RLC实体根据接收到的第一个数据包的SN，为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值，使得RLC实体接收到的数据包都能位于接收窗口内，避免了错误丢弃数据包的情况的 发生。
本申请实施例尤其适用于D2D通信，由于该D2D通信中的接收端在接收数据时可能不是从发送端发送的第一个数据包(即SN为0的数据包)开始接收，导致D2D通信没有固定的起始点，为了避免接收端错误丢弃数据包的情况发生，根据接收到的第一个数据包的SN，为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值，使得RLC实体接收到的数据包都能位于接收窗口内。当然，本申请实施例也适用于其他由于发送端发送数据和接收端接收数据不同步的通信系统中。
在实施中，VR(UH)状态变量和VR(UR)状态变量的初始值的设置包括以下两种优选的实现方式：
方式1、VR(UH)状态变量和VR(UR)状态变量的初始值均设置为该第一个数据包的SN。
该方式下，步骤31具体为：RLC实体在接收到第一个数据包后，确定该第一个数据包的SN，将VR(UH)状态变量和VR(UR)状态变量的初始值设置为该第一个数据包的SN。
该方式下，步骤32进一步包括以下三种处理方式：
一、若当前接收到的数据包的SN等于VR(UH)状态变量的当前值，RLC实体将当前接收到的数据包递交到高层，并更新VR(UH)状态变量和VR(UH)状态变量的当前值。
二、若当前接收到的数据包的SN大于VR(UH)状态变量的当前值与设定的重排序窗口大小的差值，且小于VR(UR)状态变量的当前值，RLC实体丢弃当前接收到的数据包，并更新VR(UH)状态变量的当前值，保持VR(UH)状态变量的当前值不变。
该方式下，设定的重排序窗口大小与数据包的序列号长度相关，为序列号长度的一半。具体的，当配置为5比特序列号长度时，重排序窗口大小为16；当配置为10比特序列号长度时，重排序窗口大小为512。
该方式下，若VR(UH)状态变量的当前值与设定的重排序窗口大小的差值小于零，则比较的是当前接收到的数据包的SN与对该差值进行模操作后的值。具体的，若配置为5比特序列号长度，则对该差值进行模32操作；若配置为10比特序列号长度，则对该差值进行模1024操作。
三、若当前接收到的数据包的SN大于VR(UH)状态变量的当前值，RLC实体缓存当前接收到的数据包，启动重排序定时器(T-Reordering)，并更新VR(UH)状态变量的当前值，保持所述VR(UR)状态变量的当前值不变；
在该重排序定时器定时期间，对于当前接收到的数据包，RLC实体将该数据包进行缓存，并更新VR(UH)状态变量的当前值，保持VR(UR)状态变量的当前值不变，直至 该数据包的SN等于VR(UR)状态变量的当前值或该重排序定时器超时，RLC实体将已缓存的数据包进行重排序并递交到高层，停止该重排序定时器，并更新VR(UH)状态变量和VR(UR)状态变量的当前值，其中，更新后的VR(UH)状态变量当前值与更新后的VR(UR)状态变量的当前值相同。
下面结合一个具体实施例，对第一种优选的实现方式进行详细说明。
实施例一、以SN为10bits长度为例，即SN从0到1023。假设RLC实体接收到的数据包的SN顺序为600，601，599，603，604，602。本实施例中对接收到的数据包的处理过程如下：
1：RLC实体接收到的第一个RLC数据包的SN为600，此时，RLC实体将VR(UH)状态变量(以下简称VR(UH))和VR(UR)状态变量(以下简称VR(UR))的初始值设置为600，RLC实体将SN为600的数据包递交到高层，并更新VR(UH)和VR(UR)，即将VR(UH)和VR(UR)的值设置为601。
2：RLC实体接收到的第二个数据包的SN为601，由于SN＝VR(UH)状态变量的当前值，RLC实体将SN为601的数据包递交到高层，并更新VR(UH)和VR(UR)状态变量，即将VR(UH)和VR(UR)的值设置为602。
3：RLC实体接收到的第三个数据包SN为599，由于(VR(UH)-UM_Window_Size)≤SN<VR(UR)，RLC实体丢弃该数据包。
4：RLC实体接收到的第四个数据包SN为603，由于SN>VR(UH)，将SN为603的数据包放入缓存，更新VR(UH)，即将VR(UH)的值设置为604，而VR(UR)的值不变(仍为602)；RLC实体启动T-Reordering，并将VR(UX)的值设置为VR(UH)的值，即VR(UX)＝604。
5：RLC实体接收到的第五个数据包SN为604，由于SN＝VR(UH)，RLC实体更新VR(UH)，即将VR(UH)的值设置为605，而VR(UR)的值不变(仍为602)，并将SN为604的数据包放入缓存。
6：RLC实体接收到的第六个数据包SN为602，由于SN＝VR(UR)，更新VR(UR)，即将VR(UR)的值＝605，并将SN＝602，603和604的数据包递交到高层，此时由于VR(UX)<＝VR(UR)，则停止T-Reordering，且由于VR(UR)＝VR(UH)，因此不重启T-Reordering。
方式2、VR(UH)状态变量的初始值设置为该第一个数据包的SN，且VR(UR)状态变量的初始值设置为该VR(UH)状态变量的初始值与设定的重排序窗口大小的差值。
该方式下，步骤31具体为：RLC实体在接收到第一个数据包后，确定该第一个数据包的SN，并将VR(UH)状态变量的初始值设置为该第一个数据包的SN，以及将VR(UR)状态变量的初始值设置为该VR(UH)状态变量的初始值与设定的重排序窗口大小的差值。
该方式下，若VR(UH)状态变量的初始值与设定的重排序窗口大小的差值小于零，RLC实体为VR(UR)状态变量设置初始值，包括：
RLC实体将VR(UR)状态变量的初始值设置为对VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模操作后的值。
具体的，若预先配置的SN长度为5比特，则RLC实体将VR(UR)状态变量的初始值设置为对VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模32操作后的值；
若预先配置的SN长度为10比特，则RLC实体将VR(UR)状态变量的初始值设置为对VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模1024操作后的值。
该方式下，步骤32具体为：RLC实体在接收到第一个数据包后，缓存该第一个数据包，启动重排序定时器，并更新VR(UH)状态变量和VR(UR)状态变量的当前值；
在该重排序定时器定时期间，RLC实体根据当前接收到的数据包的SN与VR(UH)状态变量和VR(UR)状态变量的当前值，对当前接收到的数据包进行处理。
进一步，在该重排序定时器定时期间，RLC实体根据当前接收到的数据包的SN与VR(UH)状态变量和VR(UR)状态变量的当前值，对当前接收到的数据包进行处理，包括以下几种处理方式：
一、若当前接收到的数据包的SN小于VR(UR)状态变量的当前值，RLC实体丢弃接收到的第一个数据包，并更新VR(UH)状态变量和VR(UR)状态变量的当前值。
二、若当前接收到的数据包的SN等于VR(UH)状态变量的当前值，RLC实体缓存当前接收到的数据包，并更新VR(UH)状态变量和VR(UR)状态变量的当前值。
三、若当前接收到的数据包的SN大于VR(UR)状态变量的当前值，且小于VR(UH)状态变量的当前值，RLC实体缓存当前接收到的数据包，并更新VR(UH)状态变量的当前值，保持VR(UR)状态变量的当前值不变。
四、若当前接收到的数据包的SN等于所述VR(UR)状态变量的当前值，RLC实体缓存当前接收到的数据包，停止该重排序定时器，并将已缓存的数据包进行重排序并递交到高层，以及更新VR(UH)状态变量的当前值，将VR(UR)状态变量的当前值设置为与VR(UH)状态变量的当前值相同。之后再接收到数据包的处理过程同方式1。
该方式下，步骤32还包括：在该重排序定时器超时时，RLC实体停止该重排序定时器，并将已缓存的数据包进行重排序并递交到高层，以及更新VR(UH)状态变量的当前值，将VR(UR)状态变量的当前值设置为与VR(UH)状态变量的当前值相同。
下面结合一个具体实施例，对第一种优选的实现方式进行详细说明。
实施例二、仍以SN为10bits长度为例，即SN从0到1023。假设RLC实体接收到的 数据包的SN顺序为600，601，599，603，604，602。本实施例中对接收到的数据包的处理过程如下：
1：RLC实体接收到的第一个RLC数据包的SN为600，将VR(UH)的初始值设置为600，且将VR(UR)的初始值设置为600-512＝88。RLC实体将SN为600的数据包放入缓存，并将VR(UH)的值设置为601，且将VR(UR)的值设置为89；RLC实体设置VR(UX)＝VR(UH)＝601，并启动T-Reordering。
2：RLC实体接收到的第二个数据包SN为601，由于SN＝VR(UH)，RLC实体将SN为601的数据包放入缓存，并将VR(UH)的值设置为602，VR(UR)的值设置为90，保持VR(UX)的值不变。
3：RLC实体接收到的第三个数据包SN为599，由于VR(UR)<SN<VR(UH)，RLC实体将SN为599的数据包放入缓存，并保持VR(UH)的值、VR(UR)的值及VR(UX)的值不变。
4：RLC实体接收到的第四个数据包SN为603，由于SN>VR(UH)，RLC实体将SN为603的数据包放入缓存，并将VR(UH)的值设置为604，VR(UR)的值设置为92，保持VR(UX)的值不变。
5：RLC实体接收到的第五个数据包SN为604，由于SN＝VR(UH)，RLC实体将SN为604的数据包放入缓存，并将VR(UH)的值设置为605，VR(UR)的值设置为93，保持VR(UX)不变。
6：RLC实体接收到的第六个数据包SN为602，由于VR(UR)<SN<VR(UH)，RLC实体将SN为602的数据包放入缓存，并保持VR(UH)的值、VR(UR)的值及VR(UX)的值不变。假设此时T-Reordering超时，RLC实体将已缓存的SN为599到604的数据包递交到高层，并将VR(UR)的值设置为605，此时，VR(UR)＝VR(UH)，因此不重启T-Reordering。
上述方法处理流程可以用软件程序实现，该软件程序可以存储在存储介质中，当存储的软件程序被调用时，执行上述方法步骤。
基于同一发明构思，本申请实施例还提供了一种RLC实体，参见图4所示，该RLC实体包括：
设置模块41，用于根据接收到的第一个数据包的SN，为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值；
处理模块42，用于根据当前接收到的数据包的SN以及RLC层中配置的VR(UH)状态变量和VR(UR)状态变量的当前值，对当前接收到的数据包进行处理，并更新所述VR(UH)状态变量和所述VR(UR)状态变量的当前值。
在实施中，作为第一种优选的实现方式，所述VR(UH)状态变量和VR(UR)状态 变量的初始值均设置为所述第一个数据包的SN。
该方式下，设置模块41具体用于：在接收到第一个数据包后，确定所述第一个数据包的SN，并将所述VR(UH)状态变量和VR(UR)状态变量的初始值设置为所述第一个数据包的SN。
该方式下，处理模块42进一步包括以下三种处理方式：
一、若当前接收到的数据包的SN等于VR(UH)状态变量的当前值，将当前接收到的数据包递交到高层，并更新VR(UH)状态变量和VR(UH)状态变量的当前值。
二、若当前接收到的数据包的SN大于VR(UH)状态变量的当前值与设定的重排序窗口大小的差值，且小于VR(UR)状态变量的当前值，丢弃当前接收到的数据包，并更新VR(UH)状态变量的当前值，保持VR(UH)状态变量的当前值不变。
该方式下，若VR(UH)状态变量的当前值与设定的重排序窗口大小的差值小于零，则比较的是当前接收到的数据包的SN与对该差值进行模操作后的值。具体的，若配置为5比特序列号长度，则对该差值进行模32操作；若配置为10比特序列号长度，则对该差值进行模1024操作。
三、若当前接收到的数据包的SN大于VR(UH)状态变量的当前值，缓存当前接收到的数据包，启动重排序定时器(T-Reordering)，并更新VR(UH)状态变量的当前值，保持所述VR(UR)状态变量的当前值不变；
在该重排序定时器定时期间，对于当前接收到的数据包，将该数据包进行缓存，并更新VR(UH)状态变量的当前值，保持VR(UR)状态变量的当前值不变，直至该数据包的SN等于VR(UR)状态变量的当前值或该重排序定时器超时，将已缓存的数据包进行重排序并递交到高层，停止该重排序定时器，并更新VR(UH)状态变量和VR(UR)状态变量的当前值，其中，更新后的VR(UH)状态变量当前值与更新后的VR(UR)状态变量的当前值相同。
作为第二种优选的实现方式，所述VR(UH)状态变量的初始值设置为所述第一个数据包的SN，且所述VR(UR)状态变量的初始值设置为所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值。
该方式下，设置模块41具体用于：在接收到第一个数据包后，确定所述第一个数据包的SN，并将所述VR(UH)状态变量的初始值设置为所述第一个数据包的SN，以及将所述VR(UR)状态变量的初始值设置为所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值。
该方式下，若所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值小于零，设置模块41具体用于：
将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设 定的重排序窗口大小的差值进行模操作后的值。
进一步，若预先配置的SN长度为5比特，则设置模块41具体用于：将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模32操作后的值；
若预先配置的SN长度为10比特，则设置模块41具体用于：将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模1024操作后的值。
该方式下，处理模块42具体用于：在接收到第一个数据包后，缓存该第一个数据包，启动重排序定时器，并更新VR(UH)状态变量和VR(UR)状态变量的当前值；
在该重排序定时器定时期间，根据当前接收到的数据包的SN与VR(UH)状态变量和VR(UR)状态变量的当前值，对当前接收到的数据包进行处理。
进一步，在该重排序定时器定时期间，处理模块42根据当前接收到的数据包的SN与VR(UH)状态变量和VR(UR)状态变量的当前值，对当前接收到的数据包进行处理，包括以下几种处理方式：
一、若当前接收到的数据包的SN小于VR(UR)状态变量的当前值，丢弃接收到的数据包，并更新VR(UH)状态变量和VR(UR)状态变量的当前值。
二、若当前接收到的数据包的SN等于VR(UH)状态变量的当前值，缓存当前接收到的数据包，并更新VR(UH)状态变量和VR(UR)状态变量的当前值。
三、若当前接收到的数据包的SN大于VR(UR)状态变量的当前值，且小于VR(UH)状态变量的当前值，缓存当前接收到的数据包，并更新VR(UH)状态变量的当前值，保持VR(UR)状态变量的当前值不变。
四、若当前接收到的数据包的SN等于所述VR(UR)状态变量的当前值，缓存当前接收到的数据包，停止该重排序定时器，并将已缓存的数据包进行重排序并递交到高层，以及更新VR(UH)状态变量的当前值，将VR(UR)状态变量的当前值设置为与VR(UH)状态变量的当前值相同。之后再接收到数据包的处理过程同方式1。
该方式下，处理模块42还用于：在该重排序定时器超时时，停止该重排序定时器，并将已缓存的数据包进行重排序并递交到高层，以及更新VR(UH)状态变量的当前值，将VR(UR)状态变量的当前值设置为与VR(UH)状态变量的当前值相同。
下面结合优选的硬件结构，对本申请实施例提供的RLC实体的结构、处理方式进行说明。
参见图5所示，该RLC实体包括收发信机51、以及与该收发信机51连接的至少一个处理器52，其中：
收发信机51被配置用于：接收发送端发送的数据包，以及将处理器52处理后的数据 包递交至高层。
处理器52被配置用于：根据接收到的第一个数据包的SN，为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值；以及根据当前接收到的数据包的SN以及RLC层中配置的VR(UH)状态变量和VR(UR)状态变量的当前值，对当前接收到的数据包进行处理，并更新所述VR(UH)状态变量和所述VR(UR)状态变量的当前值。
在实施中，作为第一种优选的实现方式，所述VR(UH)状态变量和VR(UR)状态变量的初始值均设置为所述第一个数据包的SN。
该方式下，处理器52被配置具体用于：在收发信机51接收到第一个数据包后，将所述VR(UH)状态变量和VR(UR)状态变量的初始值设置为所述第一个数据包的SN。
该方式下，处理器52进一步包括以下三种处理方式：
一、若收发信机51当前接收到的数据包的SN等于VR(UH)状态变量的当前值，将当前接收到的数据包递交到高层，并更新VR(UH)状态变量和VR(UH)状态变量的当前值。
二、若收发信机51当前接收到的数据包的SN大于VR(UH)状态变量的当前值与设定的重排序窗口大小的差值，且小于VR(UR)状态变量的当前值，丢弃当前接收到的数据包，并更新VR(UH)状态变量的当前值，保持VR(UH)状态变量的当前值不变。
该方式下，若VR(UH)状态变量的当前值与设定的重排序窗口大小的差值小于零，则比较的是当前接收到的数据包的SN与对该差值进行模操作后的值。具体的，若配置为5比特序列号长度，则对该差值进行模32操作；若配置为10比特序列号长度，则对该差值进行模1024操作。
三、若收发信机51当前接收到的数据包的SN大于VR(UH)状态变量的当前值，缓存当前接收到的数据包，启动重排序定时器，并更新VR(UH)状态变量的当前值，保持所述VR(UR)状态变量的当前值不变；
在该重排序定时器定时期间，对于当前接收到的数据包，将该数据包进行缓存，并更新VR(UH)状态变量的当前值，保持VR(UR)状态变量的当前值不变，直至该数据包的SN等于VR(UR)状态变量的当前值或该重排序定时器超时，将已缓存的数据包进行重排序并递交到高层，停止该重排序定时器，并更新VR(UH)状态变量和VR(UR)状态变量的当前值，其中，更新后的VR(UH)状态变量当前值与更新后的VR(UR)状态变量的当前值相同。
作为第二种优选的实现方式，所述VR(UH)状态变量的初始值设置为所述第一个数据包的SN，且所述VR(UR)状态变量的初始值设置为所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值。
该方式下，处理器52被配置具体用于：在收发信机51接收到第一个数据包后，将所 述VR(UH)状态变量的初始值设置为所述第一个数据包的SN，并将所述VR(UR)状态变量的初始值设置为所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值。
该方式下，若所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值小于零，处理器52被配置具体用于：
将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模操作后的值。
进一步，若预先配置的SN长度为5比特，则处理器52被配置具体用于：将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模32操作后的值；
若预先配置的SN长度为10比特，则处理器52被配置具体用于：将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模1024操作后的值。
该方式下，处理器52被配置具体用于：在收发信机51接收到第一个数据包后，缓存该第一个数据包，启动重排序定时器，并更新VR(UH)状态变量和VR(UR)状态变量的当前值；
在该重排序定时器定时期间，根据当前接收到的数据包的SN与VR(UH)状态变量和VR(UR)状态变量的当前值，对当前接收到的数据包进行处理。
进一步，在该重排序定时器定时期间，处理器52根据当前接收到的数据包的SN与VR(UH)状态变量和VR(UR)状态变量的当前值，对当前接收到的数据包进行处理，包括以下几种处理方式：
一、若收发信机51当前接收到的数据包的SN小于VR(UR)状态变量的当前值，丢弃接收到的第一个数据包，并更新VR(UH)状态变量和VR(UR)状态变量的当前值。
二、若收发信机51当前接收到的数据包的SN等于VR(UH)状态变量的当前值，缓存当前接收到的数据包，并更新VR(UH)状态变量和VR(UR)状态变量的当前值。
三、若收发信机51当前接收到的数据包的SN大于VR(UR)状态变量的当前值，且小于VR(UH)状态变量的当前值，缓存当前接收到的数据包，并更新VR(UH)状态变量的当前值，保持VR(UR)状态变量的当前值不变。
四、若收发信机51当前接收到的数据包的SN等于所述VR(UR)状态变量的当前值，缓存当前接收到的数据包，停止该重排序定时器，并将已缓存的数据包进行重排序并递交到高层，以及更新VR(UH)状态变量的当前值，将VR(UR)状态变量的当前值设置为与VR(UH)状态变量的当前值相同。之后再接收到数据包的处理过程同方式1。
该方式下，处理器52还被配置用于：在该重排序定时器超时时，停止该重排序定时器，并将已缓存的数据包进行重排序并递交到高层，以及更新VR(UH)状态变量的当前 值，将VR(UR)状态变量的当前值设置为与VR(UH)状态变量的当前值相同。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本申请的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (10)

  1. 一种RLC层的数据包处理方法，其特征在于，该方法包括：
    RLC实体根据接收到的第一个数据包的序列号SN，为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值；
    RLC实体根据当前接收到的数据包的SN以及所述VR(UH)状态变量和所述VR(UR)状态变量的当前值，对当前接收到的数据包进行处理，并更新所述VR(UH)状态变量和所述VR(UR)状态变量的当前值。
  2. 如权利要求1所述的方法，其特征在于，RLC实体根据接收到的第一个数据包的SN，为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值，包括：
    RLC实体在接收到第一个数据包后，确定所述第一个数据包的SN，并将所述VR(UH)状态变量和VR(UR)状态变量的初始值设置为所述第一个数据包的SN。
  3. 如权利要求1所述的方法，其特征在于，RLC实体根据接收到的第一个数据包的SN，为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值，包括：
    RLC实体在接收到第一个数据包后，确定所述第一个数据包的SN，并将所述VR(UH)状态变量的初始值设置为所述第一个数据包的SN，以及将所述VR(UR)状态变量的初始值设置为所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值。
  4. 如权利要求3所述的方法，其特征在于，若所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值小于零，RLC实体为所述VR(UR)状态变量设置初始值，包括：
    RLC实体将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模操作后的值。
  5. 如权利要求4所述的方法，其特征在于，若预先配置的SN长度为5比特，则RLC实体将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模32操作后的值；
    若预先配置的SN长度为10比特，则RLC实体将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模1024操作后的值。
  6. 一种RLC实体，其特征在于，该RLC实体包括：
    设置模块，用于根据接收到的第一个数据包的SN，为RLC层的VR(UH)状态变量和VR(UR)状态变量设置初始值；
    处理模块，用于根据当前接收到的数据包的SN以及RLC层中配置的VR(UH)状态 变量和VR(UR)状态变量的当前值，对当前接收到的数据包进行处理，并更新所述VR(UH)状态变量和所述VR(UR)状态变量的当前值。
  7. 如权利要求6所述的RLC实体，其特征在于，所述设置模块具体用于：
    在接收到第一个数据包后，确定第一个数据包的SN，并将所述VR(UH)状态变量和VR(UR)状态变量的初始值设置为所述第一个数据包的SN。
  8. 如权利要求6所述的RLC实体，其特征在于，所述设置模块具体用于：
    在接收到第一个数据包后，确定第一个数据包的SN，并将所述VR(UH)状态变量的初始值设置为所述第一个数据包的SN，以及将所述VR(UR)状态变量的初始值设置为所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值。
  9. 如权利要求8所述的RLC实体，其特征在于，若所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值小于零，所述设置模块为所述VR(UR)状态变量设置初始值，包括：
    将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模操作后的值。
  10. 如权利要求9所述的RLC实体，其特征在于，若预先配置的SN长度为5比特，则所述设置模块具体用于：将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模32操作后的值；
    若预先配置的SN长度为10比特，则所述设置模块具体用于：将所述VR(UR)状态变量的初始值设置为对所述VR(UH)状态变量的初始值与设定的重排序窗口大小的差值进行模1024操作后的值。
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101330443A (zh) * 2007-06-19 2008-12-24 中兴通讯股份有限公司 增强型小区前向接入信道状态重排序方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101000699B1 (ko) * 2004-04-19 2010-12-10 엘지전자 주식회사 무선링크 제어계층에서의 데이터 처리방법
MY154157A (en) * 2007-02-02 2015-05-15 Interdigital Tech Corp Method and apparatus for enhancing rlc for flexible rlc pdu size
US8416784B2 (en) * 2009-09-03 2013-04-09 Samsung Electronics Co., Ltd. Apparatus and method for receiving packet data in wireless communication system
US8638723B2 (en) * 2010-10-01 2014-01-28 Interdigital Patent Holdings, Inc. MAC and RLC architecture and procedures to enable reception from multiple transmission points
CN104079371B (zh) * 2013-03-27 2018-05-08 成都鼎桥通信技术有限公司 一种数据通信方法、设备及系统

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101330443A (zh) * 2007-06-19 2008-12-24 中兴通讯股份有限公司 增强型小区前向接入信道状态重排序方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Link Control (RLC) protocol specification (Release 11", 3GPP TS 36.322 V11.0.0, 30 September 2012 (2012-09-30), XP014075780 *
"Technical Specification Group Radio Access Network; Radio Link Control (RLC) protocol specification (Release 11", 3GPP TS 25.322 V11.2.0, 31 March 2013 (2013-03-31), XP014156473 *
See also references of EP3136665A4 *

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