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 PDFInfo
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- 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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- 238000003672 processing method Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 abstract description 24
- 238000010586 diagram Methods 0.000 description 7
- 238000004590 computer program Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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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
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- 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]
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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
- H04L47/27—Evaluation or update of window size, e.g. using information derived from acknowledged [ACK] packets
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- 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
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- 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]
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- 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
Description
Claims (10)
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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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EP15782838.5A EP3136665B1 (en) | 2014-04-23 | 2015-04-22 | Method for processing data packet of rlc layer and rlc entity |
KR1020167032735A KR101927081B1 (ko) | 2014-04-23 | 2015-04-22 | Rlc 계층의 데이터 패킷 처리 방법 및 rlc 엔티티 |
US15/306,106 US20170048150A1 (en) | 2014-04-23 | 2015-04-22 | Method for processing data packet of rlc layer and rlc entity |
JP2016564201A JP6338694B2 (ja) | 2014-04-23 | 2015-04-22 | Rlc層のデータ・パケットの処理方法及びrlcエンティティ |
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CN201410165653.5 | 2014-04-23 |
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WO2019028826A1 (en) | 2017-08-11 | 2019-02-14 | Qualcomm Incorporated | RADIO LINK CONTROL REASSEMBLY TECHNIQUES IN WIRELESS SYSTEMS |
WO2019028889A1 (en) | 2017-08-11 | 2019-02-14 | Qualcomm Incorporated | MODE RECEIVING TECHNIQUES WITHOUT ACCUSED RECEIVING RADIO LINK CONTROL RECEPTION |
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CN103281250B (zh) * | 2007-02-02 | 2017-08-11 | 交互数字技术公司 | 一种用于增强rlc操作的方法及网络实体 |
US8416784B2 (en) * | 2009-09-03 | 2013-04-09 | Samsung Electronics Co., Ltd. | Apparatus and method for receiving packet data in wireless communication system |
TWI510127B (zh) * | 2010-10-01 | 2015-11-21 | Interdigital Patent Holdings | 允許自多傳輸點接收之mac及rlc架構及方法 |
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 |
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KR101927081B1 (ko) | 2018-12-10 |
EP3136665A4 (en) | 2017-04-26 |
JP6338694B2 (ja) | 2018-06-06 |
EP3136665A1 (en) | 2017-03-01 |
EP3136665B1 (en) | 2018-06-13 |
US20170048150A1 (en) | 2017-02-16 |
KR20160148629A (ko) | 2016-12-26 |
CN105007137A (zh) | 2015-10-28 |
CN105007137B (zh) | 2018-10-23 |
TW201541918A (zh) | 2015-11-01 |
JP2017514399A (ja) | 2017-06-01 |
TWI571089B (zh) | 2017-02-11 |
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