WO2023140534A1 - Procédé de distribution de données et dispositif électronique pour sa réalisation - Google Patents

Procédé de distribution de données et dispositif électronique pour sa réalisation Download PDF

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Publication number
WO2023140534A1
WO2023140534A1 PCT/KR2023/000062 KR2023000062W WO2023140534A1 WO 2023140534 A1 WO2023140534 A1 WO 2023140534A1 KR 2023000062 W KR2023000062 W KR 2023000062W WO 2023140534 A1 WO2023140534 A1 WO 2023140534A1
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Prior art keywords
distribution unit
electronic device
data
congestion state
message
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PCT/KR2023/000062
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English (en)
Korean (ko)
Inventor
윤태호
김수진
하태호
Original Assignee
삼성전자주식회사
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Priority claimed from KR1020220011385A external-priority patent/KR20230113094A/ko
Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Publication of WO2023140534A1 publication Critical patent/WO2023140534A1/fr

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the disclosure below relates to a data distribution method, and an electronic device for performing the method.
  • Traffic distribution through the DC split bearer divides one bearer into a long term evolution (LTE) cell and a new radio (NR) cell. If a delay is caused in one of the LTE cell and the NR cell, packet reordering timeout may be caused in the UE, and overall communication performance may be lowered.
  • LTE long term evolution
  • NR new radio
  • non-standalone (NSA) method of performing communication using an LTE cell and an NR cell in an EN-DC network when the number of UEs accessing the LTE cell increases and there is a traffic request that exceeds the performance of the LTE cell, delay may occur due to congestion. Even in a UE capable of performing communication using NR in the NSA scheme, packet reordering timeout may be caused due to LTE cell congestion, thereby degrading overall communication performance. According to various embodiments disclosed in this document, it is possible to provide a data distribution method and an electronic device capable of improving communication performance by detecting congestion of LTE cells and limiting data distribution to LTE cells.
  • a congestion state of the second distribution unit is identified based on a message received from the second distribution unit, and whether or not the congestion state is released in the second distribution unit is confirmed.
  • a data distribution method and electronic device capable of resuming data distribution to the second distribution unit can be provided.
  • An electronic device may include a processor, and the processor may distribute and transmit data to a first distribution unit and a second distribution unit that transmit data to a user terminal, identify a congestion state related to a traffic load of the second distribution unit, and control the distribution of the data to the second distribution unit based on the congestion state.
  • a data distribution method may include an operation of distributing and transmitting the data to a first distribution unit and a second distribution unit transmitting data to a user terminal, an operation of identifying a congestion state related to a traffic load of the second distribution unit, and an operation of controlling the distribution of the data to the second distribution unit based on the congestion state.
  • a data distribution method includes an operation of distributing and transmitting the data to a first distribution unit and a second distribution unit that transmit data to a user terminal, an operation of receiving a message from the second distribution unit in which a set information element has a set value when the second distribution unit is in a congestion state, an operation of identifying the congestion state related to the traffic load of the second distribution unit based on the set information element, and an operation of transmitting the data to the second distribution unit based on the congestion state. It may include an operation to control distribution.
  • an increase in waiting time and performance deterioration in a terminal due to congestion of a path for transmitting data to a user terminal may be prevented and/or reduced.
  • a dual connectivity split bearer in transmitting a dual connectivity split bearer into a first distribution unit and a second distribution unit and transmitting to a user terminal, data distribution is restricted to a path in which congestion occurs. Delay due to reordering can be prevented and / or reduced, the number of reordering can be reduced, and communication performance degradation can be prevented or alleviated.
  • 1 is a diagram illustrating an operation of transmitting data distributed by an electronic device to a user terminal according to various embodiments.
  • FIG. 2 is a diagram illustrating an operation of distributing data of an electronic device and an operation of identifying a congestion state of a second distribution unit according to various embodiments.
  • FIG. 3 is a diagram illustrating an operation of distributing data by an electronic device according to various embodiments.
  • FIG. 4 is a diagram illustrating an operation of limiting data distribution or resuming data distribution to a second distribution unit based on a message received from the second distribution unit by an electronic device according to various embodiments.
  • FIG. 5 is a diagram illustrating an operation of determining whether or not a congestion state of a second distribution unit is released for each set period of an electronic device according to various embodiments.
  • FIG. 6 is a diagram illustrating an operation of distributing data to a first distribution unit and a second distribution unit by an electronic device according to various embodiments.
  • FIG. 7 is a diagram illustrating a format of a message received by an electronic device from a first distribution unit or a second distribution unit according to various embodiments.
  • FIG. 1 is a diagram illustrating an operation of transmitting data distributed by an electronic device 100 to a user terminal 300 according to various embodiments.
  • the embodiment shown in FIG. 1 is a diagram illustrating an embodiment in which the electronic device 100 transmits downlink data to the user terminal 300 according to a non-stand alone (NSA) method in the EN-DC network.
  • NSA non-stand alone
  • an electronic device 100 may include a processor (not shown).
  • the electronic device 100 may distribute input traffic, eg data, to the first distributed unit 200 - 1 (DU) and the second distributed unit 200 - 2 using a processor and transmit the same.
  • the electronic device 100 may transmit data to the user terminal 300 through the first distribution unit 200-1 and the second distribution unit 200-2 in the EN-DC network.
  • the electronic device 100 distributes traffic, for example, a bearer, to the first distribution unit 200-1 and the second distribution unit 200-2, and transmits data to the first distribution unit 200-1 and the second distribution unit 200-2.
  • the electronic device 100 may include an interface (not shown) supporting one or more designated protocols that may be used to directly or wirelessly connect to an external electronic device (eg, the first distribution unit 200-1 and the second distribution unit 200-2).
  • the electronic device 100 may include a communication module (not shown) capable of supporting establishment of a direct communication channel or wireless communication channel between external electronic devices (eg, the first distribution unit 200-1 and the second distribution unit 200-2), and communication through the established communication channel.
  • the electronic device 100 may transmit distributed data packets and messages to the first distribution unit 200-1 and the second distribution unit 200-2, respectively.
  • a path for transmitting packets and messages from the electronic device 100 to the first distribution unit 200-1 may represent a first path
  • a path for transmitting packets and messages from the electronic device 100 to the second distribution unit 200-2 may represent a second path.
  • the electronic device 100 may transmit packets and messages to the first distribution unit 200-1 through a first path and transmit packets and messages to the second distribution unit 200-2 through a second path.
  • messages transmitted by the electronic device 100 to the first distribution unit 200-1 and the second distribution unit 200-2 may be messages in a DL user data (DUD) format according to the 3GPP standard.
  • DMD DL user data
  • the first distributed unit 200-1 may be included in a communication device of a base station (eNodeB, eNB) of an NR cell
  • the second distributed unit 200-2 may be included in a communication device of a base station (gNodeB, gNB) of an LTE cell
  • the electronic device 100 may distribute and transmit secondary cell group (SCG) split bearers to the first distribution unit 200-1 and the second distribution unit 200-2.
  • the electronic device 100 may be a centralized unit (CU) of an NR cell base station.
  • data for example, an SCG bearer
  • SA stand alone
  • the electronic device 100 and the first distribution unit 200-1 are included in the communication device of the base station of the NR cell, and the second distribution unit 200-2 is described as an embodiment included in the communication device of the base station of the LTE cell, but is not limited thereto.
  • the first distribution unit 200-1 and the electronic device 100 may be included in a communication device of a base station of an LTE cell, and the second distribution unit 200-2 may be included in a communication device of a base station of an NR cell.
  • the electronic device 100 may distribute and transmit the MCG split bearer to the first distribution unit 200-1 and the second distribution unit 200-2.
  • the first distribution unit 200-1 and the second distribution unit 200-2 may process packets received from the electronic device 100 and transmit the packets to the user terminal 300.
  • each of the first distribution unit 200-1 and the second distribution unit 200-2 may include a protocol layer for processing packets.
  • the first distribution unit 200-1 may include a protocol layer according to the NR communication method in order to transmit downlink data to the user terminal 300 according to the NR communication method.
  • the first distribution unit 200 - 1 may transmit the packet processed using the protocol layer to the user terminal 300 .
  • the second distribution unit 200-2 may include a protocol layer according to the LTE communication scheme in order to transmit downlink data to the user terminal 300 according to the LTE communication scheme.
  • the first distribution unit 200 - 1 may transmit the packet processed using the protocol layer to the user terminal 300 .
  • the first distribution unit 200-1 and the second distribution unit 200-2 may transmit a message to the electronic device 100.
  • the messages transmitted to the electronic device 100 by the first distribution unit 200-1 and the second distribution unit 200-2 may be messages in a DL data delivery status (DDDS) format according to the 3GPP standard.
  • DDDS DL data delivery status
  • FIG. 2 is a diagram illustrating an operation of distributing data of an electronic device (eg, the electronic device 100 of FIG. 1 ) and an operation of identifying a congestion state of a second distribution unit (eg, the second distribution unit 200-2 of FIG. 1 ) according to various embodiments.
  • an electronic device eg, the electronic device 100 of FIG. 1
  • an operation of identifying a congestion state of a second distribution unit eg, the second distribution unit 200-2 of FIG. 1
  • the first communication device 10 may include a communication device of an NR base station
  • the second communication device 20 may include a communication device of an LTE base station.
  • the first communication device 10 may be referred to as a transmission node, an NR cell, or a gNB
  • the second communication device 20 may be referred to as a reception node, an LTE cell, or an eNB.
  • the electronic device 100 may include a protocol stack for distributing traffic, eg, an SCG split bearer, to a first distribution unit 200-1 and a second distribution unit 200-2.
  • the electronic device 100 may include a packet data convergence protocol (PDCP) layer 110 .
  • PDCP packet data convergence protocol
  • the PDCP layer 110 of the electronic device 100 may distribute data, eg, SCG split bearer, to the first distribution unit 200-1 and the second distribution unit 200-2.
  • the PDCP layer 110 of the electronic device 100 may route PDCP packet data units (PDUs) output from the PDCP layer 110 to the first distribution unit 200-1 and the second distribution unit 200-2.
  • PDUs PDCP packet data units
  • the PDCP layer 110 of the electronic device 100 assigns sequential numbers to packets of data distributed to the first distribution unit 200-1 and the second distribution unit 200-2. Can be numbered.
  • the electronic device 100 may transmit serial numbered packets in the PDCP layer 110, for example, PDCP PDUs to the first distribution unit 200-1 and the second distribution unit 200-2, respectively.
  • the PDCP layer 110 of the electronic device 100 may assign a serial number to a packet using a message transmitted to the RLC layer 210-1 of the first distribution unit 200-1 and the RLC layer 210-2 of the second distribution unit 200-2.
  • the message transmitted from the PDCP layer 110 of the electronic device 100 to the RLC layer 210-1 of the first distribution unit 200-1 and the RLC layer 210-2 of the second distribution unit 200-2 may be a message according to the DUD format.
  • a message according to the DUD format may include a sequence number, for example, an NR-U sequence number (SN).
  • the first distribution unit 200-1 and the second distribution unit 200-2 may process packets received from the electronic device 100 using a protocol stack, and transmit the processed packets to the user terminal 300.
  • the protocol stacks of the first distribution unit 200-1 and the second distribution unit 200-2 may include radio link control (RLC) layers 210-1 and 210-2, and media access control (MAC) layers 220-1 and 220-2, and PHY layers 230-1 and 230-2, respectively.
  • RLC radio link control
  • MAC media access control
  • PHY PHY layers 230-1 and 230-2, respectively.
  • the protocol stack of the first distribution unit 200-1 may be a protocol stack for transmitting and receiving data with the user terminal 300 according to the NR communication scheme
  • the protocol stack of the second distribution unit 200-2 may be a protocol stack for transmitting and receiving data with the user terminal 300 according to the LTE communication scheme.
  • the RLC layer 210-1, the MAC layer 220-1, and the PHY layer 230-1 of the first distribution unit 200-1 process packets by performing prescribed operations according to the NR communication scheme
  • the RLC layer 210-2, MAC layer 220-2, and PHY layer 230-2 of the second distribution unit 200-2 perform prescribed operations according to the LTE communication scheme to process packets.
  • the electronic device 100 may identify a congestion state related to the traffic load of the second distribution unit 200-2.
  • the congestion state may be a state in which the traffic load of the second distribution unit 200-2 exceeds the maximum transmittable traffic load of the second distribution unit 200-2.
  • the congestion state may be a state in which traffic required to be transmitted to a plurality of user terminals 300 connected to the cell exceeds the maximum transmission capacity of the cell.
  • the congestion state may mean a state in which the amount of data requested from the plurality of user terminals 300 communicatively connected to the second distribution unit 200-2 exceeds the amount of data that the second distribution unit 200-2 can transmit.
  • the second distribution unit 200-2 may determine a congestion state. For example, the second distribution unit 200-2 may determine whether or not the second distribution unit 200-2 is in a congested state based on the number and state of the plurality of user terminals 300 connected in communication with the second distribution unit 200-2. For example, the second distribution unit 200-2 may determine whether the second distribution unit 200-2 is in a congested state based on the number of user terminals (active UEs) in an active state among user terminals communicatively connected to the second distribution unit 200-2.
  • active UEs user terminals
  • a user terminal communicatively connected to the second distribution unit 200-2 may include a user terminal (eg, the user terminal 300 of FIG. 1) that is simultaneously communicatively connected to the first distribution unit 200-1 and the second distribution unit 200-2, and a user terminal (not shown) that is communicatively connected only to the second distribution unit 200-2.
  • the second distribution unit 200-2 may determine whether the second distribution unit 200-2 is congested based on the number of user terminals (active UEs) in an active state, excluding user terminals in an idle state, among user terminals communicatively connected to the second distribution unit 200-2.
  • the second distribution unit 200-2 compares the number of user terminals in an active state connected to the second distribution unit 200-2 with a predetermined threshold value, and if the number of user terminals in an active state is equal to or greater than the threshold value, it may be determined that the second distribution unit 200-2 is in a congested state.
  • the threshold value may be determined based on an amount of data required for communication of a user terminal in an active state and a maximum data transmission amount of the second distribution unit 200 - 2 .
  • the second distribution unit 200-2 may determine whether the second distribution unit 200-2 is in a congested state by using the amount of bearers that occupy radio resources of the second distribution unit 200-2 for a predetermined time t based on the maximum transmission capacity of the second distribution unit 200-2.
  • the electronic device 100 may identify whether the second distribution unit 200-2 is congested based on the message received from the second distribution unit 200-2.
  • the electronic device 100 may receive a message according to the DDDS format from the second distribution unit 200-2.
  • a message according to the DDDS format may include various information elements.
  • the information elements may include information about data transmission from the electronic device 100 to the second distribution unit 200-2.
  • a message according to the DDDS format may include information elements related to data transmission, such as 'Desired buffer size for the data radio bearer', 'Desired data rate', and 'Number of lost NR-U sequence number range reported'.
  • the electronic device 100 may set an information element for indicating a congestion state among information elements.
  • 'Cause value' may indicate a parameter for indicating an event that has occurred in a corresponding node.
  • 3GPP 3rd generation partnership project
  • 'Cause Value' can have a value of 0 to 255, values 7 to 228 are reserved for future value extensions, and values 229 to 255 are reserved for test purposes.
  • the electronic device 100 may set one of a value reserved for future expansion or a value reserved for test purposes as a value for indicating a congestion state. For example, when the second distribution unit 200-2 determines that the second distribution unit 200-2 is congested, a message having a 'Cause value' of 241, which is an information element of the DDDS format, can be transmitted to the electronic device 100. The electronic device 100 may determine that the second distribution unit 200-2 is in a congested state when the value of 'Cause value', which is an information element of the message received from the second distribution unit 200-2, is 241. In the above example, 'Cause value' may indicate an information element set to indicate a congestion state, and 241, a value of 'Cause value', may indicate a value set to indicate a congestion state.
  • the electronic device 100 has been described as the case where the value of the information element (eg, 'cause value') of the message received from the second distribution unit 200-2 is 241, but is not limited to the above example.
  • the electronic device 100 may define at least one of values of an information element including a parameter definable by a user among information elements of a message received from the second distribution unit 200-2 as a congested state. Based on the message received from the second distribution unit 200-2, the electronic device 100 determines that the second distribution unit 200-2 is in a congestion state when the value of the information element defined as representing the congestion state has a set value.
  • the electronic device 100 may communicate with the second distribution unit 200-2 using the X2-U interface.
  • the X2-U interface may be used for communication between an eNB, eg, a base station of an LTE cell, and a gNB, eg, a base station of an NR cell, in the NSA scheme.
  • the electronic device may control data distribution to the second distribution unit.
  • the electronic device may limit data distribution to the second distribution unit.
  • the electronic device may transmit data to the first distribution unit.
  • the electronic device can prevent and/or reduce data transmission delay due to the congestion of the second distribution unit.
  • the electronic device can prevent and/or reduce packet reordering timeout according to a data retransmission request from the user terminal.
  • the PDCP layer 110 included in the second communication device 20 transmits a packet to the second distribution unit 200-2 using data, for example, an MCG bearer, and the second distribution unit 200-2 may transmit the transmitted packet to the user terminal 300.
  • data for example, an MCG bearer
  • the protocol stack of the electronic device 100, the first distributed unit 200-1 and the second distributed unit 200-2 such as the PDCP layer 110, the RLC layer 210-1, 210-2, the Mac layer 220-1, 220-2, and the PHY layer 230-1, 230-2 Even if it is not, the known technical contents can be applied.
  • the PDCP layer 110 of the electronic device 100 may perform operations such as ciphering and deciphering, header compression and decompression in a user plane, or PDCP PDU duplication in a control plane.
  • the electronic device 100, the first distribution unit 200-1, and the second distribution unit 200-2 may include protocol stacks not shown as protocol stacks.
  • the electronic device 100 may further include at least one of 5G layer 3, eg, a radio resource control (RRC) layer and a non access stratum (NAS) layer, or a service data adaptation protocol (SDPA) layer.
  • 5G layer 3 eg, a radio resource control (RRC) layer and a non access stratum (NAS) layer
  • NAS non access stratum
  • SDPA service data adaptation protocol
  • FIG. 3 is a diagram illustrating an operation of distributing data by an electronic device (eg, the electronic device 100 of FIG. 1 ) according to various embodiments.
  • the electronic device 100 may distribute and transmit data to a first distribution unit (eg, the first distribution unit 200-1 of FIG. 1 ) and a second distribution unit (eg, the second distribution unit 200-2 of FIG. 1 ).
  • a first distribution unit eg, the first distribution unit 200-1 of FIG. 1
  • a second distribution unit eg, the second distribution unit 200-2 of FIG. 1
  • the PDCP layer eg, the PDCP layer 110 of FIG. 2
  • the electronic device 100 may distribute SCG split bearers to the first distribution unit 200-1 and the second distribution unit 200-2.
  • the electronic device 100 may identify a congestion state of the second distribution unit 200-2 in operation 320.
  • the second distribution unit 200-2 may determine whether the second distribution unit 200-2 is congested based on the number and state of user terminals (e.g., the user terminal 300 of FIG. 1) connected in communication with the second distribution unit 200-2. For example, when the number of active user terminals connected to the second distribution unit 200-2 is greater than or equal to a set threshold value, the second distribution unit 200-2 may determine that the second distribution unit 200-2 is congested.
  • the electronic device 100 may identify a congestion state of the second distribution unit 200-2 based on the message received from the second distribution unit 200-2. For example, the electronic device 100 may receive a message according to the DDDS format from the second distribution unit 200-2.
  • the electronic device 100 may define at least one of values of a user-definable information element among a plurality of information elements included in a message according to the DDDS format as indicating a congestion state.
  • the second distribution unit 200-2 may transmit a message to the electronic device 100 in which the value of the set information element is set to a value indicating the congestion state.
  • the electronic device 100 may define that a corresponding distribution unit indicates a congestion state when the value of the information element 'Cause value' of the message according to the DDDS format is '241'.
  • the second distribution unit 200-2 may transmit a message in which the information element 'Cause value' has a value of '241' to the electronic device 100.
  • the electronic device 100 may identify that the second distribution unit 200-2 is in a congested state when the value of the information element 'Cause value' is '241'.
  • the electronic device 100 may limit data distribution to the second distribution unit 200-2 based on the congestion state in operation 330.
  • the electronic device 100 may limit data distribution to the second distribution unit 200-2 when the second distribution unit 200-2 is congested.
  • the SCG split bearer may be transmitted only to the first distribution unit 200-1, and data distribution may be limited to the second distribution unit 200-2.
  • FIG. 4 is a diagram illustrating an operation of limiting data distribution to the second distribution unit 200-2 or resuming data distribution based on a message received by an electronic device (eg, the electronic device 100 of FIG. 1) from a second distribution unit (eg, the second distribution unit 200-2 of FIG. 1) according to various embodiments.
  • an electronic device eg, the electronic device 100 of FIG. 1
  • a second distribution unit eg, the second distribution unit 200-2 of FIG. 1
  • the electronic device 100 may distribute and transmit data to a first distribution unit (eg, the first distribution unit 200-1 of FIG. 1 ) and the second distribution unit 200-2 in operation 410.
  • a first distribution unit eg, the first distribution unit 200-1 of FIG. 1
  • the second distribution unit 200-2 in operation 410.
  • operation 410 the description of operation 310 of FIG. 3 may be substantially equally applied.
  • the electronic device 100 may receive a message from the second distribution unit 200-2 in operation 420.
  • the message may be a message according to the DDDS format.
  • a message may include a plurality of information elements related to data transmission.
  • a set information element among information elements of the message may have a set value.
  • a set information element among information elements according to the DDDS format may be 'Cause Value'.
  • the value of the set information element 'Cause value' may be the set value '241'.
  • the electronic device 100 may identify a congestion state based on the set information element and set value in operation 430 .
  • the electronic device 100 may determine whether a set information element included in the message has a set value. In the above example, when the value of the information element 'Cause value' included in the message is '241', the electronic device 100 may determine that the second distribution unit 200-2 is in a congested state.
  • the electronic device 100 may limit data distribution to the second distribution unit 200-2 in operation 440.
  • operation 440 the description of operation 330 of FIG. 3 may be substantially equally applied.
  • the electronic device 100 may determine whether the congestion state of the second distribution unit 200-2 is released in operation 450. When the second distribution unit 200-2 continues to be congested, the electronic device 100 may limit data distribution to the second distribution unit 200-2 in operation 440. For example, the electronic device 100 may periodically identify the congestion state of the second distribution unit 200 - 2 according to a polling method. A period for identifying the congestion state of the second distribution unit 200-2 may be variously determined according to settings.
  • the electronic device 100 may transmit a message to the second distribution unit 200-2 at each set period.
  • the electronic device 100 may receive a message from the second distribution unit 200-2 in response to the transmitted message, and determine whether the congestion state of the second distribution unit 200-2 is released based on the received message.
  • the electronic device 100 may transmit a message for checking whether the second distribution unit 200-2 is in a congested state to the second distribution unit 200-2 at set intervals.
  • the second distribution unit 200 - 2 may transmit a message including whether the second distribution unit 200 - 2 is congested to the electronic device 100 in response to the message received from the electronic device 100 .
  • the second distribution unit 200-2 may identify a change in congestion state.
  • the second distribution unit 200-2 may transmit a message to the electronic device 100 when the congestion state of the second distribution unit 200-2 is released.
  • the electronic device 100 may identify that the congestion state of the second distribution unit 200-2 is released based on the message received from the second distribution unit 200-2.
  • the electronic device 100 may resume data distribution to the second distribution unit 200-2 in operation 460.
  • FIG. 5 is a diagram illustrating an operation of determining whether an electronic device (e.g., the electronic device 100 of FIG. 1) according to various embodiments is released from a congestion state of a second dispersion unit (e.g., the second dispersion unit 200-2 of FIG. 1) for each set period.
  • an electronic device e.g., the electronic device 100 of FIG. 1
  • a second dispersion unit e.g., the second dispersion unit 200-2 of FIG.
  • the electronic device 100 may transmit a message to the second distribution unit 200-2 in operation 510.
  • the electronic device 100 may transmit a message in a DUD format to the second distribution unit 200-2.
  • the electronic device 100 may transmit a message in which the value of the information element 'Report polling' is 1 in the DUD format message to the second distribution unit 200-2.
  • the information element 'Report polling' may indicate a parameter requesting transmission of a downlink data delivery status, for example, a DDDS message to the electronic device 100 (eg, the PDCP layer 110 of the electronic device 100).
  • 'Report polling' when the value of 'Report polling' is 0, it may indicate not requesting a DDDS message or a status (downlink data delivery status report not requested), and when the value of 'Report polling' is 1, requesting a DDDS message or status (downlink data delivery status report requested).
  • a congestion state may be determined in the second distribution unit 200-2.
  • the second distribution unit 200-2 may compare the number of user terminals (active UEs) in an active state that have communicated with the second distribution unit 200-2 with a set threshold. The second distribution unit 200-2 may determine that the second distribution unit 200-2 is congested when the number of active user terminals is greater than or equal to a set threshold.
  • the electronic device 100 may receive a message from the second distribution unit 200-2 in operation 530.
  • a set information element of a message received by the electronic device 100 in operation 530 may have a set value.
  • the set information element of the message received by the electronic device 100 in operation 530 may have a value different from the set value.
  • the message received by the electronic device 100 from the second distribution unit 200-2 in operation 530 may be understood as substantially the same as the message received from the second distribution unit 200-2 in operation 420 of FIG. 4 .
  • the electronic device 100 may determine whether the value of the information element set in operation 540 is the set value. The electronic device 100 may compare the value of the information element set in operation 540 with the set value to determine whether the congestion state of the second distribution unit 200-2 is released. When the value of the information element set in operation 540 is not the set value, for example, when the second distribution unit 200-2 is not congested, the electronic device 100 may resume data distribution to the second distribution unit 200-2 in operation 460.
  • the electronic device 100 may determine whether the set period has elapsed in operation 550 . When the set period elapses, the electronic device 100 may transmit a message to the second distribution unit 200-2 in operation 510.
  • the electronic device 100 transmits a message, for example, a DUD message, to the second distribution unit 200-2 at set intervals, and in response to the transmitted message, based on a message received from the second distribution unit 200-2, for example, a DDDS message, it is possible to identify whether or not the congestion state of the second distribution unit 200-2 is released.
  • a message received from the second distribution unit 200-2 for example, a DDDS message
  • the electronic device 100 may resume data distribution to the second distribution unit 200-2.
  • FIG. 6 is a diagram illustrating an operation of distributing data to a first distribution unit (eg, the first distribution unit 200-1 of FIG. 1 ) and a second distribution unit (eg, the first distribution unit 200-2 of FIG. 1 ) by an electronic device (eg, the electronic device 100 of FIG. 1 ) according to various embodiments.
  • a first distribution unit eg, the first distribution unit 200-1 of FIG. 1
  • a second distribution unit eg, the first distribution unit 200-2 of FIG. 1
  • an electronic device eg, the electronic device 100 of FIG. 1
  • the electronic device 100 may distribute and transmit data to the first distribution unit 200-1 and the second distribution unit 200-2 in operations 610-1 and 610-2.
  • the electronic device 100 may receive a message from the first distribution unit 200-1 in operation 620-1 and receive a message from the second distribution unit 200-2 in operation 620-2.
  • the electronic device 100 may receive a message according to the DDDS format in operations 620-1 and 620-2.
  • Messages received by the electronic device 100 from the first distribution unit 200-1 and the second distribution unit 200-2 may include a value indicating whether the first distribution unit 200-1 and the second distribution unit 200-2 are congested.
  • messages received by the electronic device 100 from the first distribution unit 200-1 and the second distribution unit 200-2 may include a value of congestion.
  • a congestion value of 0 may indicate that the corresponding distributed unit is not in a congested state
  • a congestion value of 1 may indicate that the corresponding distributed unit is in a congested state
  • a congestion value of 0 representing a congestion state shown in FIG. 6 may indicate a case in which an information element set for a congestion state in a DDDS message is not a set value.
  • the fact that the value of congestion shown in FIG. 6 is 1 may indicate a case where an information element configured for a congestion state in the DDDS message is a configured value.
  • the first distribution unit 200-1 or the second distribution unit 200-2 when it is in a congested state, it may be set to transmit a message in which the value of the information element 'Cause value' of the DDDS message is '241'.
  • a message with a congestion value of 0 can be understood as substantially the same as a message in which the set information element 'Cause value' has a value other than '241'.
  • a message with a congestion value of 1 can be understood as substantially the same as a message with a set information element 'Cause value' value of '241'.
  • the electronic device 100 may limit data distribution to the second distribution unit 200-2 based on the congestion state of the second distribution unit 200-2.
  • the electronic device 100 may distribute and transmit data to the first distribution unit 200-1 in operation 630-1, and limit data distribution to the second distribution unit 200-2 in operation 630-2.
  • the electronic device 100 may determine whether the second distribution unit 200-2 is congested by transmitting a message to the second distribution unit 200-2 at each set period.
  • the electronic device 100 may transmit a message to the second distribution unit 200-2 in operation 640-1.
  • the message transmitted by the electronic device 100 in operation 640-1 may indicate a message for checking whether the second distribution unit 200-2 is congested.
  • the second distribution unit 200-2 may determine whether the second distribution unit 200-2 is congested in operation 650-1. For example, the second distribution unit 200-2 compares the number of active user terminals connected to the second distribution unit 200-2 with a set threshold, and determines whether the second distribution unit 200-2 is in a congested state.
  • the electronic device 100 may receive a message from the second distribution unit 200-2 in operation 660-1.
  • the message received in operation 660-1 may be understood as substantially the same as the message received in operation 620-2.
  • the electronic device 100 may transmit a message to the second distribution unit 200-2 at each set period.
  • the electronic device 100 may transmit a message to the second distribution unit 200-2 at intervals set as in operations 640-1, ..., 640-n.
  • the second distribution unit 200-2 may determine the congestion state of the second distribution unit 200-2 for each set period and transmit a message to the electronic device 100. For example, the second distribution unit 200-2 may determine the congestion state of the second distribution unit 200-2 at intervals set as in operations 650-1, ..., 650-n. The second distribution unit 200-2 may transmit a message to the electronic device 100 at intervals set as in operations 660-1, ..., 660-n.
  • the electronic device 100 may identify whether the second distribution unit 200-2 is congested using the messages received in operations 650-1, ..., 650-n.
  • the electronic device 100 may identify that the congestion state of the second distribution unit 200-2 is released, based on the message received in operation 650-n with a congestion of 0.
  • the electronic device 100 may resume data distribution to the second distribution unit 200-2.
  • the value of congestion included in the message of operation 660-n is 0, it may indicate that the congestion state of the second distribution unit 200-2 is released.
  • the electronic device 100 may distribute and transmit data to the first distribution unit 200-1 in operation 670-1, and distribute and transmit data to the second distribution unit 200-2 in operation 670-2.
  • the congestion state of the second distribution unit 200-2 is released as in operation 670-2, the electronic device 100 may resume data distribution.
  • FIG. 7 is a diagram illustrating a format of a message received by an electronic device (eg, the electronic device 100 of FIG. 1 ) from a first distribution unit (eg, the first distribution unit 200-1 of FIG. 1 ) or a second distribution unit (eg, the second distribution unit 200-2 of FIG. 1 ) according to various embodiments.
  • an electronic device eg, the electronic device 100 of FIG. 1
  • a first distribution unit eg, the first distribution unit 200-1 of FIG. 1
  • a second distribution unit eg, the second distribution unit 200-2 of FIG. 1
  • the format of the message shown in FIG. 7 may include the format of a DDDS message.
  • the DDDS message may include various information elements.
  • the information element may include 'PDU type', 'Cause Report', and 'Desired buffer size for the data radio bearer' shown in FIG. 7 .
  • the electronic device 100 may determine that the distribution unit that has transmitted the message is in a congested state.
  • the information element 'Cause value' may indicate a parameter indicating an event of a corresponding node and may have a value ranging from 0 to 3 octets.
  • the value of the information element 'Cause value' indicates UNKNOWN when 0, RADIO LINK OUTAGE when 1, RADIO LINK RESUME when 2, UL RADIO LINK OUTAGE when 3, DL RADIO LINK OUTAGE when 4, UL RADIO LINK RESUME when 5, and DL RADIO LINK RESUME when 6, and from 7 to 228 Up to are reserved for future value extensions, and values from 229 to 255 are reserved for test purposes.
  • the electronic device 100 may set an information element for indicating a congestion state to 'Cause value', and in case of congestion, the value of the set information element 'Cause value' may be set to '241'.
  • the value of 'Cause value' is '241', it can be determined that the corresponding distribution unit is in a congested state.
  • the above set information elements and/or set values are examples, and are not limited to the above examples.
  • An electronic device (eg, the electronic device 100 of FIG. 1 ) according to various embodiments includes a processor, and the processor distributes and transmits the data to a first distribution unit (eg, the first distribution unit 200-1 of FIG. 1 ) and a second distribution unit (eg, the second distribution unit 200-2 of FIG. 1 ) that transmits data to the user terminal 300, and causes congestion related to the traffic load of the second distribution unit 200-2.
  • a state may be identified, and distribution of the data to the second distribution unit 200-2 may be controlled based on the congestion state.
  • the processor may identify the congestion state based on the message received from the second distribution unit 200-2.
  • a set information element among information elements of the message has a set value
  • the processor may identify the congestion state based on the set information element and the set value.
  • the congestion state may be determined based on the number and state of the plurality of user terminals 300 connected to the second distribution unit 200-2 in communication.
  • the processor determines whether the congestion state of the second distribution unit 200-2 is released, and when the congestion state of the second distribution unit 200-2 is released, the second distribution unit 200-2. The distribution of the data may be resumed.
  • the processor transmits a message to the second distribution unit 200-2 at set intervals, and based on a message received from the second distribution unit 200-2 in response to the message, the second distribution unit 200-2 may determine whether or not the congestion state is present.
  • a data distribution method may include an operation of distributing and transmitting the data to the first distribution unit 200-1 and the second distribution unit 200-2 that transmit data to the user terminal 300, an operation of identifying a congestion state related to a traffic load of the second distribution unit 200-2, and an operation of controlling the distribution of the data to the second distribution unit 200-2 based on the congestion state.
  • the operation of identifying the congestion state may identify the congestion state based on the message received from the second distribution unit 200-2.
  • a set information element among information elements of the message has a set value
  • the operation of identifying the congestion state may identify the congestion state based on the set value
  • the congestion state may be determined based on the number and state of the plurality of user terminals 300 connected to the second distribution unit 200-2 in communication.
  • the data distribution method may further include an operation of determining whether the congestion state of the second distribution unit 200-2 is released, and an operation of resuming distribution of the data to the second distribution unit 200-2 when the congestion state of the second distribution unit 200-2 is released.
  • a message is transmitted to the second distribution unit 200-2 every set period, and the second distribution unit 200-2 responds to the message. Based on a message received from the second distribution unit 200-2, it may be determined whether the second distribution unit 200-2 is in the congestion state.
  • a data distribution method includes an operation of distributing and transmitting the data to a first distribution unit 200-1 and a second distribution unit 200-2 that transmit data to a user terminal 300, an operation of receiving a message having a set value of a set information element among information elements when the second distribution unit 200-2 is in a congestion state, and based on the set information element, An operation of identifying the congestion state related to the traffic load of the second distribution unit 200-2 and an operation of controlling distribution of the data to the second distribution unit 200-2 based on the congestion state.
  • the congestion state may be determined based on the number and state of the plurality of user terminals 300 connected to the second distribution unit 200-2 in communication.
  • the data distribution method may further include an operation of determining whether the congestion state of the second distribution unit 200-2 is released, and an operation of resuming distribution of the data to the second distribution unit 200-2 when the congestion state of the second distribution unit 200-2 is released.
  • a message is transmitted to the second distribution unit 200-2 every set period, and the second distribution unit 200-2 responds to the message. Based on a message received from the second distribution unit 200-2, it may be determined whether the second distribution unit 200-2 is in the congestion state.
  • first, second, or first or secondary may be used simply to distinguish a corresponding component from other corresponding components, and do not limit the corresponding components in other respects (e.g., importance or order).
  • a (e.g., a first) component is referred to as “coupled” or “connected” to another (e.g., a second) component, with or without the terms “functionally” or “communicatively,” it means that the component may be connected to the other component directly (e.g., by wire), wirelessly, or through a third component.
  • module used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as, for example, logic, logical block, component, or circuit.
  • a module may be an integrally constructed component or a minimal unit of components or a portion thereof that performs one or more functions.
  • the module may be implemented in the form of an application-specific integrated circuit (ASIC).
  • ASIC application-specific integrated circuit
  • Various embodiments of this document include one or more instructions stored in a storage medium (eg, internal memory or external memory) readable by a machine (eg, the electronic device 100).
  • a storage medium eg, internal memory or external memory
  • a machine eg, the electronic device 100
  • a processor eg, the processor 120
  • a device eg, the electronic device 100
  • the one or more instructions may include code generated by a compiler or code executable by an interpreter.
  • the device-readable storage medium may be provided in the form of a non-transitory storage medium.
  • 'non-temporary' only means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic wave), and this term does not distinguish between the case where data is semi-permanently stored in the storage medium and the case where it is temporarily stored.
  • a signal e.g., electromagnetic wave
  • the method according to various embodiments disclosed in this document may be included and provided in a computer program product.
  • Computer program products may be traded between sellers and buyers as commodities.
  • a computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read only memory (CD-ROM)), or distributed (e.g., downloaded or uploaded) online, through an application store (e.g., Play StoreTM) or directly between two user devices (e.g., smartphones).
  • an application store e.g., Play StoreTM
  • at least part of the computer program product may be temporarily stored or temporarily created in a device-readable storage medium such as a manufacturer's server, an application store server, or a relay server's memory.
  • each component (eg, module or program) of the components described above may include a single object or a plurality of entities, and some of the plurality of entities may be separately disposed in other components.
  • one or more components or operations among the aforementioned corresponding components may be omitted, or one or more other components or operations may be added.
  • a plurality of components eg modules or programs
  • the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by a corresponding component of the plurality of components prior to the integration.
  • the actions performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the actions may be executed in a different order, may be omitted, or one or more other actions may be added.

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

Abstract

Sont divulgués : un procédé de distribution de données ; et un dispositif électronique pour réaliser le procédé. Le dispositif électronique selon divers modes de réalisation comprend un processeur qui peut : transmettre les données en les distribuant entre une première unité de distribution et une seconde unité de distribution, qui transmettent les données à un terminal utilisateur ; identifier un état de congestion associé à la charge de trafic de la seconde unité de distribution ; et limiter la distribution des données à la seconde unité de distribution sur la base de l'état de congestion.
PCT/KR2023/000062 2022-01-21 2023-01-03 Procédé de distribution de données et dispositif électronique pour sa réalisation WO2023140534A1 (fr)

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KR10-2022-0009197 2022-01-21
KR20220009197 2022-01-21
KR1020220011385A KR20230113094A (ko) 2022-01-21 2022-01-26 데이터 분배 방법 및 상기 방법을 수행하는 전자 장치
KR10-2022-0011385 2022-01-26

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KR20150022385A (ko) * 2013-08-23 2015-03-04 에스케이텔레콤 주식회사 데이터 전송 완료시간을 단축하기 위한 트래픽 제어 장치 및 방법
KR20150032524A (ko) * 2012-06-28 2015-03-26 엘지전자 주식회사 무선 통신 시스템에서 영역 갱신 방법 및 장치
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KR20180082912A (ko) * 2017-01-11 2018-07-19 삼성전자주식회사 무선 통신 시스템에서 트래픽을 제어하기 위한 장치 및 방법

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KR101643738B1 (ko) * 2011-08-03 2016-07-29 퀄컴 인코포레이티드 멀티플로우 네트워크들에서 플로우 혼잡 제어를 위한 방법 및 장치
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KR20150032524A (ko) * 2012-06-28 2015-03-26 엘지전자 주식회사 무선 통신 시스템에서 영역 갱신 방법 및 장치
KR20150022385A (ko) * 2013-08-23 2015-03-04 에스케이텔레콤 주식회사 데이터 전송 완료시간을 단축하기 위한 트래픽 제어 장치 및 방법
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