WO2015149299A1 - Procédé de transmission de données et station de base - Google Patents

Procédé de transmission de données et station de base Download PDF

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Publication number
WO2015149299A1
WO2015149299A1 PCT/CN2014/074608 CN2014074608W WO2015149299A1 WO 2015149299 A1 WO2015149299 A1 WO 2015149299A1 CN 2014074608 W CN2014074608 W CN 2014074608W WO 2015149299 A1 WO2015149299 A1 WO 2015149299A1
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WO
WIPO (PCT)
Prior art keywords
base station
delay
time
target base
determination message
Prior art date
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PCT/CN2014/074608
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English (en)
Chinese (zh)
Inventor
严平
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/074608 priority Critical patent/WO2015149299A1/fr
Priority to CN201480000484.8A priority patent/CN104170461B/zh
Publication of WO2015149299A1 publication Critical patent/WO2015149299A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off

Definitions

  • the present invention relates to the field of communications, and more particularly to a data transmission method and base station. Background technique
  • the buffered data of the source base station of the user equipment is forwarded to the target base station side and sent to the user equipment.
  • the forwarding data needs to be cached before the handover is completed.
  • the target base station preferentially sends the forwarding data to the user equipment, and after transmitting the forwarding data, starts to send the new data sent by the core network to the target base station.
  • the target base station triggers the core network to perform the path switching operation of the user equipment, and the core network performs the path switching operation of the downlink data, and sends the data sent to the user equipment to the target base station.
  • the core network uses the end mark (Endmark) identifier, and when the link handover occurs, the core network sends the source network to the source base station.
  • Endmark end mark
  • a terminator identifier which is then sent by the source base station to the target base station;
  • the target base station After receiving the forwarding data, the target base station starts a terminator timer. If the terminator message forwarded by the source base station is received within the duration of the terminator timer, it indicates that the source base station has not forwarded the data to the target base station. After the target base station determines that all the forwarded data that has been buffered has been sent to the user equipment, it starts to send new data; or when the terminator message sent by the source base station has not been received when the terminator timer expires, the source base station is considered to have already No forwarding data is sent to the target base station, and after the target base station determines that all the forwarded data that has been buffered has been transmitted to the user equipment, the new data is started to be transmitted.
  • the start terminator timer means that the timer is started (or updated) as long as the forwarding data from the source base station is received before starting to forward the new data. If the target base station has started to transmit new data and receives the forwarding data sent by the source base station, the received forwarding data is discarded.
  • the embodiments of the present invention provide a data transmission method and a base station, which can avoid interruption of data transmission or packet loss.
  • a data transmission method including:
  • the target base station of the user equipment establishes a forwarding channel with the source base station of the user equipment; the target base station determines a forwarding delay between the source base station and the source base station;
  • the target base station starts the end timer after receiving the forwarding data sent by the source base station or triggering the core network to perform a path switching operation of the user equipment;
  • the target base station starts to The user equipment sends new data.
  • a forwarding delay between the target base station and the source base station is based on a time of transmission between the target base station and the source base station The delay is determined by the sending time and the receiving time of the message.
  • the determining, by the target base station, a forwarding delay between the target base station The target base station sends a first time delay determination message to the source base station, where the first time delay determination message carries the first time information, where the first time information is used to indicate that the target base station sends the first time Delay determining the time of the message;
  • the target base station Determining, by the target base station, a time when the target base station receives the first delay determination message; the target base station receiving, according to a time when the target base station sends the first delay determination message, and the target base station receiving the Determining the time of the message, determining a joyful forwarding delay between the target base station and the source base station;
  • the first time information is sent by the target base station to the first time delay determining message The local air interface frame number and the local air interface subframe number corresponding to the time; or, the first time information is a local time stamp corresponding to the time when the target base station sends the first delay determination message.
  • the target base station determines a forwarding delay between the target base station, and the The target base station sends a second time delay determination message to the source base station, where the second time delay determination message carries the second time information, where the second time information is used to indicate that the target base station sends the second time Delay determining the time of the message;
  • the unidirectional forwarding delay of the target base station to the source base station is a time when the source base station sends the second delay determination message according to the target base station, and the source base station receives the Determining the time of the second delay determination message;
  • Determining, by the target base station, the duration of the terminator timer according to the forwarding delay including: determining, by the target base station, the terminator timer according to a one-way forwarding delay between the target base station and the source base station The length of time.
  • the third time delay determining message further carries the third time information, where the third The time information is used to indicate the time when the source base station sends the third delay determination message.
  • the determining, by the target base station, the forwarding delay between the source base station and the source base station further includes:
  • the target base station determines the duration of the terminator timer according to the forwarding delay, including: a unidirectional forwarding delay between the target base station and the source base station, and a one-way forwarding of the source base station to the target base station The delay, the target base station determines the duration of the terminator timer.
  • the sixth aspect in the first aspect is a global timestamp corresponding to the time when the target base station sends the second delay determination message.
  • the target base station determines a forwarding delay between the target base station, and the Receiving, by the target base station, a fourth time delay determination message sent by the source base station, where the fourth time delay determination message carries fourth time information, where the fourth time information is used to indicate that the source base station sends the fourth time delay Determine the time of the message;
  • the target base station Determining, by the target base station, a time when the target base station receives the fourth delay determination message; according to a time sum of the source base station sending the fourth delay determination message, and the target base station receiving the fourth delay Determining a time of the message, the target base station determining a one-way forwarding delay of the source base station to the target base station;
  • the determining, by the target base station, the duration of the terminator timer according to the forwarding delay includes: determining, according to the unidirectional forwarding delay of the source base station to the target base station, the target base station determining the duration of the end of the timer.
  • the fourth time information is that the source base station sends the fourth time delay determination message The global timestamp corresponding to the time.
  • a data transmission method including:
  • a source base station of the user equipment establishes a forwarding channel with the target base station of the user equipment; a delay determination message is transmitted between the source base station and the target base station, so that the target base station is configured according to the target base station and the The delay time of the transmission between the source base stations determines the transmission time of the message and the delay time determined by the reception time to determine the duration of the terminator timer.
  • the transmitting the delay determining message between the source base station and the target base station includes:
  • the source base station receives the first time delay determination message sent by the target base station, where the first time delay determination message carries first time information, where the first time information is used to instruct the target base station to send the The first delay determines the time of the message;
  • the target base station Forwarding, by the source base station, the first delay determination message to the target base station, so that the target base station receives the first base delay determination message according to the time when the target base station sends the Determining, by the first time delay, a bidirectional forwarding delay between the target base station and the source base station, and according to the bidirectional forwarding between the target base station and the source base station Delay, determining the duration of the terminator timer.
  • the first time information is sent by the target base station to the first time delay determining message
  • the local air interface frame number and the local air interface subframe number corresponding to the time; or, the first time information is a local time stamp corresponding to the time when the target base station sends the first delay determination message.
  • the transmitting the delay determining message between the source base station and the target base station includes: The source base station receives the second time delay determination message sent by the target base station, where the second time delay determination message carries the second time information, where the second time information is used to indicate that the target base station sends the second time information. The time delay determines the time of the message;
  • the source base station sends a third delay determination message to the target base station, where the third delay determination message carries a unidirectional forwarding delay of the target base station to the source base station, so as to facilitate the target base station. And determining, by the target base station, a duration of the terminator timer according to a one-way forwarding delay between the target base station and the source base station.
  • the third time delay determining message further carries the third time information, where the third The time information is used to indicate the time when the source base station sends the third delay determination message, so that the target base station receives the third time delay determination message according to the source base station, and the target base station receives the Determining a unidirectional forwarding delay of the source base station to the target base station, and determining, according to the unidirectional forwarding delay between the target base station and the source base station, and the source base station to The unidirectional forwarding delay of the target base station determines the duration of the terminator timer.
  • the second time information is used by the target base station to send the second delay determination message The global timestamp corresponding to the time.
  • the transmitting the delay determining message between the source base station and the target base station includes: The source base station sends a fourth delay determination message to the target base station, where the fourth time delay is determined.
  • the message carries the fourth time information, where the fourth time information is used to indicate the time when the source base station sends the fourth delay determination message, so that the target base station sends the fourth delay according to the source base station.
  • the target base station Determining a time of the message and a time when the target base station receives the fourth delay determination message, the target base station determining a one-way forwarding delay of the source base station to the target base station, and according to the source base station The unidirectional forwarding delay of the target base station determines the duration of the terminator timer.
  • the fourth time information is that the source base station sends the fourth time delay determination message The global timestamp corresponding to the time.
  • a base station is provided, where the base station is a target base station of a user equipment, and the base station includes:
  • a establishing unit configured to establish a forwarding channel with the source base station of the user equipment, where the first determining unit is configured to determine a forwarding delay between the source base station and the source base station;
  • a second determining unit configured to determine a duration of the terminator timer according to the forwarding delay
  • an initiating unit configured to: before the sending unit starts to send new data to the user equipment, and receive the forwarding data sent by the source base station After the core network is triggered to perform a path switching operation of the user equipment, the terminator timer is started;
  • a sending unit configured to: when the terminator timer expires, or when the terminator message is received within the duration of the terminator timer, determine to forward the received forwarding data to the user equipment, and then start to The user equipment sends new data.
  • a forwarding delay between the target and the source base station is determined according to a delay between the base station and the source base station The sending time and receiving time of the message are determined.
  • the first determining unit is specifically configured to: send, to the source base station, a first time delay determination a message, where the first time delay determination message carries the first time information, where the first time information is used to indicate the time when the base station sends the first time delay determination message; Determining, by the first time delay, the first delay determination message forwarded to the base station by the first time delay determination message; determining a time when the base station receives the first delay determination message; and sending, according to the base station, the first time Determining a time of determining a message and a time when the base station receives the first delay determination message, and determining a bidirectional forwarding delay between the base station and the source base station;
  • the second determining unit is specifically configured to: perform bidirectional rotation between the base station and the source base station The delay is determined, and the duration of the terminator timer is determined.
  • the first determining unit is specifically configured to: send, to the source base station, a second time delay determination a message, where the second time delay determination message carries the second time information, where the second time information is used to indicate the time when the base station sends the second delay determination message; a third delay determination message sent after the second delay determination message, where the third delay determination message carries a unidirectional forwarding delay of the base station to the source base station, and the base station to the The unidirectional forwarding delay of the source base station is determined by the source base station according to the time when the base station sends the second delay determination message and the time when the source base station receives the second delay determination message; a third time delay determining message, determining a unidirectional forwarding delay of the base station to the source base station; the second determining unit is specifically configured to: according to a one-way forwarding between the base station and the source base station Delay, determining
  • the third time delay determining message further carries the third time information, where the third The time information is used to indicate the time when the source base station sends the third delay determination message; the first determining unit is further configured to: determine a time when the base station receives the third delay determination message; a time when the source base station sends the third time delay determination message and a time when the base station receives the third time delay determination message, and determines a one-way forwarding delay of the source base station to the base station;
  • the second determining unit is specifically configured to: determine the terminator timer according to a unidirectional forwarding delay between the base station and the source base station, and a unidirectional forwarding delay between the source base station and the base station The length of time.
  • the first determining unit is specifically configured to: receive a fourth delay sent by the source base station Determining a message, where the fourth time delay determination message carries a fourth time information, where the fourth time information is used to indicate a time when the source base station sends the fourth time delay determination message; Determining the time of the message by the fourth time delay; determining, according to the time when the source base station sends the fourth delay determination message, and the time when the base station receives the fourth delay determination message, determining the source base station to the base station One-way forwarding delay;
  • the second determining unit is specifically configured to: determine a duration of the terminator timer according to a unidirectional forwarding delay of the source base station to the base station.
  • a base station is provided, where the base station is a source base station of a user equipment, and the base station includes:
  • a establishing unit configured to establish a forwarding channel with a target base station of the user equipment
  • a transmitting unit configured to transmit a delay determination message to the target base station, to facilitate the target base station according to the target base station and the The delay between transmissions between the base stations determines the transmission time of the message and the forwarding delay determined by the reception time to determine the duration of the terminator timer.
  • the transmitting unit is specifically configured to:
  • the target base station Forwarding the first delay determination message to the target base station, so that the target base station receives the first delay according to the time when the target base station sends the first delay determination message, and the target base station receives the first delay Determine a time of the message, determine a bidirectional forwarding delay between the target base station and the base station, and determine a duration of the terminator timer according to a bidirectional forwarding delay between the target base station and the base station.
  • the transmitting unit is specifically configured to:
  • the target base station determines the duration of the terminator timer.
  • the third time delay determining message further carries the third time information, where The third time information is used to indicate the time when the base station sends the third delay determination message, so that the target base station receives the third time delay determination message according to the base station, and the target base station receives the Determining a unidirectional forwarding delay of the base station to the target base station, and determining a unidirectional forwarding delay between the target base station and the base station, and the base station to the target base station according to the time of the third time delay determining message
  • the one-way forwarding delay determines the duration of the terminator timer.
  • the transmitting unit is specifically configured to:
  • the target base station determines the base station to the base station according to the time when the base station sends the fourth delay determination message and the time when the target base station receives the fourth delay determination message.
  • the unidirectional forwarding delay of the target base station is determined, and the duration of the terminator timer is determined according to the unidirectional forwarding delay of the base station to the target base station.
  • a fifth aspect provides a base station, where the base station is a target base station of a user equipment, where the base station includes a memory, a processor, a network interface, and a bus, where the network interface implements a communication connection with at least one other network element.
  • the bus is configured to implement connection communication between internal components of the base station, the memory is configured to store program code, and the processor is configured to invoke the program code stored in the memory, and perform the following operations:
  • the terminator timer Before starting to send new data to the user equipment, after receiving the forwarding data sent by the source base station or triggering the core network to perform a path switching operation of the user equipment, starting the terminator timer; when the terminator timer expires Or, after receiving the terminator message within the duration of the terminator timer, after determining to forward the received forwarding data to the user equipment, start sending new data to the user equipment through the network interface.
  • a forwarding delay between the base station and the source base station is determined according to a time delay between the base station and the source base station The sending time and receiving time of the message are determined.
  • the processor is used to invoke the program code stored in the memory, Do the following:
  • the network interface Transmitting, by the network interface, the first time delay determination message to the source base station, where the first time delay determination message carries first time information, where the first time information is used to instruct the base station to send the Time delay to determine the message;
  • the processor is configured to invoke the program code stored in the memory, and perform the following operations:
  • the unidirectional forwarding delay of the base station to the source base station is a time when the source base station sends the second delay determination message according to the base station, and the source base station receives the first The second delay determines the time of the message;
  • the third time delay determining message further carries the third time information, where the third The time information is used to indicate the time when the source base station sends the third delay determination message;
  • the processor is configured to invoke the program code stored in the memory, and further perform the following operations: Determining a time when the base station receives the third delay determination message;
  • the processor is configured to invoke the program code stored in the memory, and specifically perform the following operations:
  • a fourth time delay determination message sent by the source base station, where the fourth time delay determination message carries fourth time information, where the fourth time information is used to instruct the source base station to send the Four time delays to determine the time of the message;
  • a base station is provided, where the base station is a source base station of a user equipment, where the base station includes a memory, a processor, a network interface, and a bus, where the network interface implements a communication connection with at least one other network element.
  • the bus is configured to implement connection communication between internal components of the base station, the memory is configured to store program code, and the processor is configured to invoke the program code stored in the memory, and perform the following operations:
  • the delay determines the duration of the terminator timer.
  • the processor is configured to invoke the program code stored in the memory, and specifically perform the following operations:
  • the network interface Forwarding, by the network interface, the first delay determination message to the target base station, so that the target base station sends the first time delay determination message according to the target base station and the target base station receiving station Determining a bidirectional forwarding delay between the target base station and the base station, and determining the terminator according to a bidirectional forwarding delay between the target base station and the base station The duration of the timer.
  • the processor is configured to invoke the program code stored in the memory, and specifically perform the following operations:
  • the network interface And receiving, by the network interface, a second time delay determination message sent by the target base station, where the second time delay determination message carries second time information, where the second time information is used to indicate that the target base station sends the Describe the time when the second delay determines the message;
  • the third time delay determination message further carries a third time information, where the third The time information is used to indicate the time when the base station sends the third delay determination message, so that the target base station receives the third time delay determination message according to the base station, and the target base station receives the Determining the time of the message, determining a unidirectional forwarding delay of the base station to the target base station, and determining a one-way forwarding delay between the target base station and the base station, and a unidirectional manner from the base station to the target base station Forwarding delay, determining the duration of the terminator timer.
  • the processor is configured to invoke the program code stored in the memory, and specifically perform the following operations:
  • the delay determining message carries the fourth time information, where the fourth time information is used to indicate the time when the base station sends the fourth delay determination message, so that the target base station sends the fourth delay according to the base station. Determining a time of the message and a time when the target base station receives the fourth delay determination message, the target base station determining a unidirectional forwarding delay of the base station to the target base station, and according to the base station to the target base station The one-way forwarding delay determines the duration of the terminator timer.
  • the target base station determines the duration of the terminator timer according to the forwarding delay of the target base station and the forwarding base station, so that the duration of the terminator timer can be set more reasonably, thereby avoiding that the target base station is too long. Waiting for the forwarding data sent by the source base station to cause a low data transmission rate or interrupting data transmission, or avoiding a short waiting time of the target base station, causing the target base station to start transmitting new data, receiving the forwarding data from the source base station and losing Discard the forwarding data and there is a packet loss problem.
  • the time sorting of the forwarded data and the new data can be made more reasonable, that is, there is no need to wait for a long time to send new data, and no new data is sent in advance to make the data forward.
  • the sending time is short and packet loss occurs.
  • FIG. 1 is a schematic flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a data transmission method according to another embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a data transmission method according to another embodiment of the present invention.
  • FIG. 4 is a schematic block diagram of a base station according to another embodiment of the present invention.
  • FIG. 5 is a schematic block diagram of a base station according to another embodiment of the present invention.
  • FIG. 6 is a schematic block diagram of a base station according to another embodiment of the present invention.
  • FIG. 7 is a schematic block diagram of a base station according to another embodiment of the present invention. detailed description
  • FIG. 1 is a schematic flow chart of a data transmission method 100 according to an embodiment of the present invention. As shown in FIG. 1, the method 100 includes:
  • S110 The target base station of the user equipment establishes a forwarding channel with the source base station of the user equipment.
  • S120 The target base station determines a forwarding delay between the source base station and the source base station.
  • the target base station determines, according to the forwarding delay, a duration of the terminator timer.
  • the target base station After receiving the new data sent to the user equipment, the target base station starts the terminator timer after receiving the forwarding data sent by the source base station or triggering the core network to perform the path switching operation of the user equipment.
  • the target base station may determine a forwarding delay between the target base station and the source base station, and set a terminator according to the forwarding delay.
  • the duration of the timer after the target base station receives the forwarding data sent by the source base station, or triggers the core network to perform the path switching operation of the user equipment (specifically, after the path switch request is sent to the core network device),
  • the target base station starts to start the terminator timer; if the terminator message forwarded by the source base station is received within the duration of the terminator timer, it indicates that the source base station has not forwarded the data to the target base station, and the target base station determines that the terminal has been cached.
  • the new data is started to be sent; or when the terminator message sent by the source base station has not been received when the terminator timer expires, the source base station is considered to have not forwarded the data to the target base station.
  • the target base station it is determined that all the forwarded data that has been cached has been sent.
  • new data is sent. If the target base station has started to transmit new data and then receives the forwarding data sent by the source base station, the received forwarding data is discarded.
  • the start terminator timer refers to starting or restarting as long as the forwarding data from the source base station is received before starting to forward the new data (also can be called Update) Terminator timer. Or, after the target base station triggers the path switching operation of the user equipment by the core network, the start terminator timer is started. This is because the core network performs the path switching operation after the core network performs the path switching operation of the user equipment, and the terminating character is sent when the core network performs the path switching operation. The message is sent to the source base station, and the source base station forwards the terminator message to the target base station.
  • the target base station triggers the core network to perform the path switching operation of the user equipment, and then starts the start terminator timer. Reasonable. After the target base station triggers the path switching operation of the user equipment by the core network, after starting the start term timer, after receiving the forwarding data from the source base station before starting to send new data, the terminator timer is restarted.
  • the target base station determines the duration of the terminator timer according to the forwarding delay of the target base station and the forwarding base station, so that the duration of the terminator timer can be set more reasonably, thereby avoiding that the target base station is too long. Waiting for the forwarding data sent by the source base station to cause a low data transmission rate or interrupting data transmission, or avoiding a short waiting time of the target base station, causing the target base station to start transmitting new data, receiving the forwarding data from the source base station and discarding The forwarding data has a packet loss problem.
  • the time sorting of the forwarded data and the new data can be made more reasonable, that is, there is no need to wait for a long time to send new data, and no new data is sent in advance to make the data forward.
  • the sending time is short and packet loss occurs.
  • the forwarding delay between the target base station and the source base station is determined according to the transmission time and the receiving time of the delay determination message transmitted between the target base station and the source base station.
  • the forwarding delay between the target base station and the source base station is determined according to the delay determination message transmitted between the target base station and the source base station, which will be described in detail below in combination with several implementation manners.
  • the target base station sends a first time delay determination message to the source base station, where the first time delay determination message carries the first time information, where the first time information is used to indicate that the target base station sends the first time delay determination.
  • the source base station forwards the first delay determination message to the target base station; and the target base station receives the first time delay determination message and forwards the message to the target base station after receiving the first delay determination message.
  • the target base station determines the target according to the time when the target base station sends the first delay determination message and the time when the target base station receives the first delay determination message.
  • the first time information is a local air interface frame number and a local air interface subframe number corresponding to the time when the target base station sends the first time delay determination message; or, the first time information is The local timestamp corresponding to the time when the target base station sends the first delay determination message.
  • the first time information may also be a global timestamp corresponding to the time when the target base station sends the first delay determination message.
  • the target base station sends a second time delay determination message to the source base station, where the second time delay determination message carries the second time information, where the second time information is used to indicate that the target base station sends
  • the second time delay determines the time of the message; after receiving the second delay determination message sent by the target base station, the source base station may determine the time for receiving the second delay determination message, and determine the time and the number of the message according to the second delay.
  • the second time information is used to determine the unidirectional forwarding delay of the source base station to the target base station, and the unidirectional forwarding delay of the source base station to the target base station is sent to the target base station by using a third delay determination message; the target base station receives the third delay After determining the message, the duration of the terminator timer is determined according to the one-way forwarding delay of the source base station to the target base station carried in the third time delay determination message.
  • the second time information is a global timestamp corresponding to the time when the target base station sends the second delay determination message.
  • the target base station sends a second time delay determination message to the source base station, where the second time delay determination message carries the second time information, where the second time information is used to indicate that the target base station sends the second time delay determination.
  • the source base station may determine the time for receiving the second delay determination message, and determine according to the time of receiving the second delay determination message and the second time information.
  • the unidirectional forwarding delay of the source base station to the target base station, the third time information is sent to the target base station by using the third time delay determination message, where the third time information is used to indicate that the source base station sends the The third time delay determines the time of the message; the target base station receives the third time delay determination message, determines the receiving time of the third time delay determination message, and determines the receiving time of the message according to the third time delay and the third time indicated by the third time information.
  • Determining the transmission time of the message determines the one-way forwarding delay from the source base station to the target base station; thus, the target base station can And forward one-way delay between the source base station to the source base station to a target base station forwards the one-way delay, determine the duration of the timer terminator.
  • the second time information is a global timestamp corresponding to the time when the target base station sends the second delay determination message.
  • the third time information is a global timestamp corresponding to the time when the target base station sends the second delay determination message.
  • the source base station sends a fourth time delay determination message to the target base station, where the fourth time delay determination message carries the fourth time information, where the fourth time information is used to indicate that the source base station sends the fourth time delay. Determining the time of the message; the target base station determines the time at which the target base station receives the fourth delay determination message; the target base station determines the source according to the time when the source base station transmits the fourth delay determination message and the time when the target base station receives the fourth delay determination message The unidirectional forwarding delay of the base station to the target base station; thus, the target base station determines the duration of the terminator timer according to the one-way forwarding delay of the source base station to the target base station.
  • the fourth time information sends the fourth time delay to the source base station.
  • the global timestamp corresponding to the time of the message.
  • the global timestamp referred to in the embodiment of the present invention may be GPS time information or time offset of the inter-station system.
  • the duration of the terminator timer and the time of the bidirectional forwarding delay may be set to be 2-10 times, and the duration of the terminator timer and the time of the one-way forwarding delay are set to 4 -20 times relationship.
  • the bidirectional forwarding delay is 2ms, you can set the terminator timer to 20ms. If the bidirectional forwarding delay is 10ms, you can set the terminator timer to 30ms. How to set it depends on the absolute time of the two-way forwarding delay and the network environment.
  • the foregoing multiple delay determination messages may be dedicated messages, for example, carrying only time information in an idle frame, or may be in a process of interacting between a target base station and a source base station in the prior art. If the message is available, the time information and forwarding delay can be additionally carried in the existing message.
  • the target base station determines the duration of the terminator timer according to the forwarding delay of the target base station and the forwarding base station, so that the duration of the terminator timer can be set more reasonably, thereby avoiding that the target base station is too long. Waiting for the forwarding data sent by the source base station to cause a low data transmission rate or interrupting data transmission, or avoiding a short waiting time of the target base station, causing the target base station to start transmitting new data, receiving the forwarding data from the source base station and discarding The forwarding data has a packet loss problem.
  • the time sorting of the forwarded data and the new data can be made more reasonable, that is, there is no need to wait for a long time to send new data, and no new data is sent in advance to make the data forward.
  • the sending time is short and packet loss occurs.
  • the data transmission method according to an embodiment of the present invention has been described above from the target base station side.
  • a data transmission method according to an embodiment of the present invention will be described below from the source base station side in conjunction with FIG.
  • FIG. 2 is a schematic flow chart of a data transmission method 200 in accordance with an embodiment of the present invention. As shown in FIG. 2, the method 200 includes:
  • a source base station of the user equipment establishes a forwarding channel with a target base station of the user equipment.
  • S220 The time delay determining message is transmitted between the source base station and the target base station, so that the target base station determines the forwarding delay determined by the sending time and the receiving time of the message according to the delay between the target base station and the source base station, and determines the terminator timer. duration.
  • the delay determining message is transmitted between the source base station and the target base station, so that the target base station determines the forwarding time and the receiving time determined by the transmission time according to the delay between the target base station and the source base station. Determining the duration of the terminator timer, the target base station according to the target The time delay of the base station and the forwarding base station to determine the duration of the terminator timer can make the duration of the terminator timer more reasonable, thereby avoiding the data transmission caused by the target base station waiting for the forwarding data sent by the source base station. The rate is low or the data transmission is interrupted, or the target base station can be prevented from waiting for a short time.
  • the target base station When the target base station starts to send new data, it receives the forwarding data from the source base station and discards the forwarding data, and the packet loss problem occurs. And by reasonably setting the duration of the terminator timer, the time ordering of the forwarded data and the new data can be made more reasonable, that is, there is no need to wait for a long time to send new data, and the new data is not sent in advance so that the data is forwarded.
  • the sending time is short and packet loss occurs.
  • the transmission delay determination message between the source base station and the target base station in S220 includes:
  • the source base station receives the first time delay determination message sent by the target base station, where the first time delay determination message carries the first time information, and the first time information is used to indicate the time when the target base station sends the first time delay determination message;
  • the source base station forwards the first time delay determination message to the target base station, so that the target base station determines the target base station and the source base station according to the time when the target base station sends the first delay determination message and the time when the target base station receives the first delay determination message.
  • the two-way forwarding delay is determined, and the duration of the terminator timer is determined according to the bidirectional forwarding delay between the target base station and the source base station.
  • the first time information is a local air interface frame number and a local air interface subframe number corresponding to the time when the target base station sends the first time delay determination message; or the first time information is sent by the target base station to the first time delay determination message.
  • the time corresponds to the local timestamp.
  • the transmission delay determination message between the source base station and the target base station in S220 includes:
  • the source base station receives the second time delay determination message sent by the target base station, where the second time delay determination message carries the second time information, and the second time information is used to indicate the time when the target base station sends the second time delay determination message;
  • the source base station determines a time when the source base station receives the second delay determination message
  • the source base station sends a third delay determination message to the target base station, where the third time delay determination message carries a unidirectional forwarding delay of the target base station to the source base station, so that the target base station performs one-way forwarding according to the target base station to the source base station. Delay, the target base station determines the duration of the terminator timer.
  • the third time delay determination message further carries the third time information, where the third time information is used to indicate the time when the source base station sends the third time delay determination message, so that the target base station sends the third time delay according to the source base station.
  • the unidirectional forwarding delay of the base station determines the duration of the terminator timer.
  • the second time information is a global timestamp corresponding to the time when the target base station sends the second delay determination message.
  • the third time information is a global timestamp corresponding to the time when the target base station sends the second delay determination message.
  • the transmission delay determination message between the source base station and the target base station in S220 includes:
  • the source base station sends a fourth time delay determination message to the target base station, where the fourth time delay determination message carries the fourth time information, where the fourth time information is used to indicate the time when the source base station sends the fourth time delay determination message, so that the target base station according to the source
  • the time when the base station sends the fourth delay determination message and the time when the target base station receives the fourth delay determination message the target base station determines the one-way forwarding delay of the source base station to the target base station, and performs one-way forwarding according to the source base station to the target base station.
  • Delay determines the duration of the terminator timer.
  • the fourth time information is a global timestamp corresponding to the time when the source base station sends the fourth delay determination message.
  • the global timestamp referred to in the embodiment of the present invention may be GPS time information or time offset of the inter-station system.
  • the foregoing multiple delay determination messages may be dedicated messages, for example, carrying only time information in an idle frame, or may be in a process of interacting between a target base station and a source base station in the prior art. If the message is available, the time information and forwarding delay can be additionally carried in the existing message.
  • the delay determining message is transmitted between the source base station and the target base station, so that the target base station determines the forwarding time and the receiving time determined by the transmission time according to the delay between the target base station and the source base station. Determining the duration of the terminator timer, the target base station determines the duration of the terminator timer according to the forwarding delay of the target base station and the forwarding base station, so that the duration of the terminator timer can be set more reasonably, thereby avoiding the target base station being too long.
  • the source base station Waiting for the data transmission rate sent by the source base station to be low or the data transmission is interrupted, or avoiding the short waiting time of the target base station, and causing the target base station to start transmitting new data, receiving the forwarding from the source base station.
  • the data is discarded and the forwarding data is discarded, and the packet loss problem occurs.
  • the duration of the terminator timer the time ordering of the forwarded data and the new data can be made more reasonable, that is, there is no need to wait for a long time to send new data, and the new data is not sent in advance so that the data is forwarded.
  • the sending time is short and packet loss occurs.
  • the data transmission method according to an embodiment of the present invention has been described above from the target base station side and the source base station side, respectively.
  • the data transmission method according to an embodiment of the present invention will be described below in conjunction with FIG. 3 in a mutually interactive manner.
  • FIG. 3 is a schematic flow chart of a data transmission method 300 according to an embodiment of the present invention. As shown in FIG. 3, the method 300 includes:
  • the source base station determines that the user equipment needs to be handed over to the target base station.
  • the source base station sends a handover request to the target base station.
  • the target base station performs access control after receiving the handover request sent by the source base station, and specifically how to perform access control may refer to the prior art.
  • the target base station sends a handover response to the source base station.
  • the source base station sends a handover command to the user equipment.
  • the source base station sends an SN status transmission message to the target base station.
  • the content of the specific message may refer to the prior art.
  • the source base station sends the forwarding data to the target base station, where the step continues until the terminator message sent by the serving gateway is received in S310.
  • the target base station caches the data packet forwarded by the source base station.
  • the target base station sends an idle frame to the source base station, and carries time information, where the time information is used to indicate the time when the source base station sends the idle frame.
  • the source base station After receiving the idle frame sent by the source base station, the source base station forwards the idle frame back to the target base station.
  • the target base station determines a bidirectional forwarding delay between the target base station and the source base station according to the receiving time of the idle frame and the sending time indicated by the time information in the idle frame, and configures a terminator timer according to the bidirectional forwarding delay.
  • the user equipment synchronizes with the target base station.
  • the target base station feeds back uplink allocation (UL Allocation) information and time advance information to the user equipment.
  • UL Allocation uplink allocation
  • the user equipment sends a handover confirmation message to the target base station.
  • the target base station sends a Path Switch request to the MME.
  • the MME sends a user plane update request to the serving gateway.
  • the serving gateway After receiving the user plane update request message sent by the MME, the serving gateway updates the DL path of the user equipment, and sends a terminator message to the source base station, to indicate that no data has been sent to the source base station.
  • the target base station determines that the terminator message forwarded by the source base station is not received within the duration of the terminator timer. Among them, the terminator message may be lost during the forwarding process or the target base station has not been reached within the timer duration.
  • the target base station determines, after the terminator timer duration, that the terminator message forwarded by the source base station is not received, and after determining that the forwarding data from the source base station has been sent, the new data is sent to the market. If the retransmission data from the source base station is received again after starting to send new data, the forwarding data is discarded.
  • S319b The source base station sends a terminator message to the target base station, and the target base station determines to receive the forwarding data sent by the source base station within the duration of the terminator timer.
  • the target base station determines, after receiving the terminator message forwarded by the source base station, in the range of the terminator timer duration, and after determining that the forwarding data from the source base station has been sent, the new data is sent to the market. If the forwarding data from the source base station is received again after starting to send new data, the forwarding data is discarded.
  • FIG. 3 is a specific embodiment of the present invention and should not be construed as limiting the scope of the present invention.
  • the S309, S310, and S311 are modified, and the terminator timer is configured according to the one-way forwarding delay between the source base station and the target base station.
  • the embodiment of the present invention is adapted to the cell handover process of the user equipment shown in FIG. 3, but the cell handover process shown in FIG. 3 is not an actual whole process, and only a part of the process closely related to the present invention is shown.
  • the target base station after receiving the forwarding data of the source base station, the target base station sends the forwarding data to the user equipment after establishing the air interface with the user equipment; for example, after the core network updates the downlink path of the user equipment, The new data sent to the user equipment is sent to the target base station, and the target base station buffers the new data until the new data is started to be sent to the user equipment in S320a or S320b.
  • Figure 3 shows the cell handover under the same MME/Serving Gateway. If the Serving Gateway changes, the Serving Gateway may not The terminator message is sent, and the target base station determines that the terminator message forwarded by the source base station is not received within the terminator timer duration may be that the serving gateway does not send the terminator message.
  • the target base station determines the duration of the terminator timer according to the forwarding delay of the target base station and the forwarding base station, so that the duration of the terminator timer can be set more reasonably, thereby avoiding that the target base station is too long. Waiting for the data transmission rate sent by the source base station to be low or the data transmission is interrupted, or avoiding the short waiting time of the target base station, causing the target base station to start transmitting new data, receiving the forwarding data from the source base station and Discarding the forwarding data causes a packet loss problem.
  • the time ordering of the forwarded data and the new data can be made more reasonable, that is, there is no need to wait for a long time to send new data, and the new data is not sent in advance so that the data is forwarded.
  • the sending time is short and packet loss occurs.
  • the base station 400 is a target base station of the user equipment. As shown in FIG. 4, the base station 400 includes:
  • the establishing unit 410 is configured to establish a forwarding channel with the source base station of the user equipment, and the first determining unit 420 is configured to determine a forwarding delay between the source base station and the source base station.
  • a second determining unit 430 configured to determine a duration of the terminator timer according to the forwarding delay; the initiating unit 440, configured to: before the sending unit starts to send new data to the user equipment, and after receiving the source base station After the sent forwarding data or the triggering of the path switching operation of the user equipment by the core network, the terminator timer is started;
  • the sending unit 450 is configured to: when the terminator timer expires, or when the terminator message is received within the duration of the terminator timer, determine to forward the received forwarding data to the user equipment, and start Sending new data to the user device.
  • the forwarding delay between the target and the source base station is determined according to a sending time and a receiving time of a delay determination message transmitted between the base station 400 and the source base station.
  • the first determining unit 420 is specifically configured to: send, to the source base station, a first time delay determination message, where the first time delay determination message carries first time information, where the first time information is And a time for indicating that the base station 400 sends the first delay determination message; receiving the first delay determination message that is forwarded by the source base station to the base station 400 after receiving the first delay determination message; determining a base station Receiving, by the base station 400, the time of the first delay determination message; determining, according to the time when the base station 400 sends the first delay determination message, and the time when the base station 400 receives the first delay determination message, determining the base station 400 and the source base station Two-way forwarding delay between;
  • the second determining unit 430 is specifically configured to: according to the double between the base station 400 and the source base station To the forwarding delay, determine the duration of the terminator timer.
  • the first determining unit 420 is specifically configured to: send a second time delay determination message to the source base station, where the second time delay determination message carries second time information, where the second time information is And a third time delay determination message that is sent by the source base station after receiving the second delay determination message, where the third time is received.
  • the deterministic message carries a unidirectional forwarding delay of the base station 400 to the source base station, and the unidirectional forwarding delay of the base station 400 to the source base station is a time when the source base station sends the second delay determination message according to the base station 400.
  • the 430 is specifically configured to: determine a duration of the terminator timer according to a one-way forwarding delay between the base station 400 and the source base station.
  • the third time delay determination message further carries the third time information, where the third time information is used to indicate a time when the source base station sends the third time delay determination message;
  • the first determining unit 420 is further configured to: determine a time when the base station 400 receives the third delay determination message; according to a time when the source base station sends the third delay determination message, and the base station 400 receives the third The time delay determines the time of the message, and determines a one-way forwarding delay of the source base station to the base station 400;
  • the second determining unit 430 is specifically configured to: determine the terminator timer according to a one-way forwarding delay between the base station 400 and the source base station, and a one-way forwarding delay between the source base station and the base station 400. The length of time.
  • the first determining unit 420 is specifically configured to: receive a fourth time delay determination message sent by the source base station, where the fourth time delay determination message carries fourth time information, where the fourth time information is used. And indicating a time when the source base station sends the fourth delay determination message; determining a time when the base station 400 receives the fourth delay determination message; and according to a time when the source base station sends the fourth delay determination message And determining, by the base station 400, the time of the fourth delay determination message, determining a one-way forwarding delay of the source base station to the base station 400;
  • the second determining unit 430 is specifically configured to: determine a duration of the terminator timer according to a one-way forwarding delay of the source base station to the base station 400.
  • the base station 400 may correspond to the target base station in the method 100 to the method 300, and the corresponding operations of the target base station in the methods 100 to 300 may be implemented. For brevity, details are not described herein again.
  • the target base station is based on the forwarding of the target base station and the forwarding base station.
  • the duration of the terminator timer can be set more reasonably, thereby avoiding the data transmission rate being low or the data transmission interruption caused by the target base station being too long waiting for the forwarding data sent by the source base station.
  • the target base station may be prevented from waiting for a short time.
  • the target base station starts to send new data, it receives the forwarding data from the source base station and discards the forwarding data, and the packet loss problem occurs.
  • the time ordering of the forwarded data and the new data can be made more reasonable, that is, there is no need to wait for a long time to send new data, and the new data is not sent in advance so that the data is forwarded.
  • the sending time is short and packet loss occurs.
  • FIG. 5 is a schematic block diagram of a base station 500 in accordance with an embodiment of the present invention.
  • the base station 500 is a source base station of a user equipment, and the base station 500 includes:
  • the establishing unit 510 is configured to establish a forwarding channel with the target base station of the user equipment, and the transmitting unit 520 is configured to transmit a delay determination message to the target base station, so that the target base station is configured according to the target base station.
  • the delay of the transmission between the base stations determines the transmission time of the message and the delay of the transmission delay determined by the reception time to determine the duration of the terminator timer.
  • the transmitting unit 520 is specifically configured to:
  • the target base station Forwarding the first delay determination message to the target base station, so that the target base station receives the first delay according to the time when the target base station sends the first delay determination message, and the target base station receives the first delay Determine a time of the message, determine a bidirectional forwarding delay between the target base station and the base station, and determine a duration of the terminator timer according to a bidirectional forwarding delay between the target base station and the base station.
  • the transmitting unit 520 is specifically configured to:
  • the target base station Sending a third delay determination message to the target base station, where the third delay determination message is Carrying a unidirectional forwarding delay of the target base station to the base station, so that the target base station determines the terminating timing according to a unidirectional forwarding delay between the target base station and the base station.
  • the length of the device is Carrying a unidirectional forwarding delay of the target base station to the base station, so that the target base station determines the terminating timing according to a unidirectional forwarding delay between the target base station and the base station.
  • the third time delay determination message further carries the third time information, where the third time information is used to indicate a time when the base station sends the third time delay determination message, to facilitate the target Determining, by the base station, a unidirectional forwarding delay of the base station to the target base station, according to a time when the base station sends the third delay determination message, and a time when the target base station receives the third delay determination message, and according to the Determining a unidirectional forwarding delay between the target base station and the base station and a unidirectional forwarding delay of the base station to the target base station, and determining a duration of the terminator timer.
  • the third time information is used to indicate a time when the base station sends the third time delay determination message, to facilitate the target Determining, by the base station, a unidirectional forwarding delay of the base station to the target base station, according to a time when the base station sends the third delay determination message, and a time when the target base station receives the third delay determination message, and according to
  • the transmitting unit 520 is specifically configured to:
  • the target base station determines the base station to the base station according to the time when the base station sends the fourth delay determination message and the time when the target base station receives the fourth delay determination message.
  • the unidirectional forwarding delay of the target base station is determined, and the duration of the terminator timer is determined according to the unidirectional forwarding delay of the base station to the target base station.
  • the base station 500 may correspond to the source base station in the method 100 to the method 300, and the corresponding operations of the source base stations in the methods 100 to 300 may be implemented. For brevity, details are not described herein again.
  • the delay determining message is transmitted between the source base station and the target base station, so that the target base station determines the forwarding time and the receiving time determined by the transmission time according to the delay between the target base station and the source base station. Determining the duration of the terminator timer, the target base station determines the duration of the terminator timer according to the forwarding delay of the target base station and the forwarding base station, so that the duration of the terminator timer can be set more reasonably, thereby avoiding the target base station being too long.
  • FIG. 6 is a schematic block diagram of a base station 600 in accordance with an embodiment of the present invention.
  • the base station 600 is a target base station of the user equipment, and the base station 600 includes a memory 610, a processor 620, a network interface 640, and a total Line 630; wherein the network interface 640 implements a communication connection with at least one other network element, the bus 630 is configured to implement connection communication between internal components of the base station, and the memory 610 is configured to store program code.
  • the processor 620 is configured to invoke the program code stored by the memory 610, and perform the following operations:
  • the terminator timer Before starting to send new data to the user equipment, after receiving the forwarding data sent by the source base station or triggering the core network to perform a path switching operation of the user equipment, starting the terminator timer; when the terminator timer expires Or, after receiving the terminator message within the duration of the terminator timer, after determining to forward the received forwarding data to the user equipment, start to send new data to the user equipment through the network interface 640.
  • the forwarding delay between the base station 600 and the source base station is determined according to the transmission time and the reception time of the delay determination message transmitted between the base station 600 and the source base station.
  • the processor 620 is configured to invoke the program code stored by the memory 610, and specifically perform the following operations:
  • the network interface 640 Transmitting, by the network interface 640, the first time delay determination message to the source base station, where the first time delay determination message carries the first time information, where the first time information is used to instruct the base station 600 to send the first time Delay determining the time of the message;
  • Determining a bidirectional forwarding delay between the base station 600 and the source base station according to the time when the base station 600 sends the first delay determination message and the time when the base station 600 receives the first delay determination message;
  • the bidirectional forwarding delay between the source base stations is determined, and the duration of the terminator timer is determined.
  • the processor 620 is configured to invoke the program code stored by the memory 610, and perform the following operations:
  • the second time delay determination message is sent to the source base station by using the network interface 640, where the second time delay determination message carries the second time information, where the second time information is used to instruct the base station 600 to send the second time Delay determining the time of the message; And receiving, by the network interface 640, a third delay determination message that is sent by the source base station after receiving the second delay determination message, where the third delay determination message carries a single sequence of the base station 600 to the source base station.
  • the unidirectional forwarding delay of the base station 600 to the source base station is determined by the source base station according to the time when the base station 600 sends the second delay determination message, and the source base station receives the second delay. The time of the message is determined;
  • the duration of the terminator timer is determined according to a one-way forwarding delay between the base station 600 and the source base station.
  • the third time delay determination message further carries the third time information, where the third time information is used to indicate a time when the source base station sends the third time delay determination message;
  • the processor is configured to invoke the program code stored in the memory, and further perform the following operations: determining a time when the base station 600 receives the third delay determination message;
  • the one-way forwarding delay between the source base stations and the one-way forwarding delay of the source base station to the base station 600 determines the duration of the terminator timer.
  • the processor 620 is configured to invoke the program code stored by the memory 610, and specifically perform the following operations:
  • the fourth time delay determination message sent by the source base station, where the fourth time delay determination message carries the fourth time information, where the fourth time information is used to instruct the source base station to send the fourth time
  • the time delay determines the time of the message
  • the unidirectional forwarding delay of the source base station to the base station 600 determines the duration of the terminator timer.
  • the base station 600 may correspond to the target base station in the method 100 to the method 300, and the corresponding operations of the target base station in the methods 100 to 300 may be implemented.
  • the base station 600 may correspond to the target base station in the method 100 to the method 300, and the corresponding operations of the target base station in the methods 100 to 300 may be implemented.
  • no further details are provided herein.
  • the target base station determines the duration of the terminator timer according to the forwarding delay of the target base station and the forwarding base station, and can make the duration of the terminator timer more suitable.
  • the target base station starts to send new data, and receives the new data.
  • the forwarding data from the source base station and the forwarding data are discarded, and a packet loss problem occurs.
  • the time ordering of the forwarded data and the new data can be made more reasonable, that is, there is no need to wait for a long time to send new data, and the new data is not sent in advance so that the data is forwarded.
  • the sending time is short and packet loss occurs.
  • FIG. 7 is a schematic block diagram of a base station 700 in accordance with an embodiment of the present invention.
  • the base station 700 includes a memory 710, a processor 720, a network interface 730, and a bus 740; wherein the network interface 730 implements a communication connection with at least one other network element, the bus 740 is configured to implement internal components of the base station In the connection communication, the memory 710 is configured to store program code, and the processor 720 is configured to invoke the program code stored in the memory, and perform the following operations:
  • the processor 720 is configured to invoke the program code stored by the memory 710, and specifically perform the following operations:
  • the network interface 740 Receiving, by the network interface 740, the first time delay determination message sent by the target base station, where the first time delay determination message carries first time information, where the first time information is used to instruct the target base station to send the The first delay determines the time of the message;
  • the network interface 740 Forwarding, by the network interface 740, the first delay determination message to the target base station, so that the target base station receives the first time delay determination message according to the target base station, and the target base station receives the Determine a time delay of the message between the target base station and the base station 700, and determine the terminator timer according to a bidirectional forwarding delay between the target base station and the base station 700.
  • the length of time
  • the processor 720 is configured to invoke the program code stored by the memory 710, and specifically perform the following operations:
  • the second time delay determination message sent by the target base station, where the second time delay determination message carries the second time information, where the second time information is used to indicate that the target base station sends the The second delay determines the time of the message;
  • Determining a time when the base station 700 receives the second delay determination message Determining, according to a time when the target base station sends the second delay determination message, and a time when the base station 700 receives the second delay determination message, determining a one-way forwarding delay of the target base station to the base station 700;
  • the third time delay determination message further carries the third time information, where the third time information is used to indicate the time when the base station 700 sends the third delay determination message, so as to facilitate the target base station. Determining, according to the time when the base station 700 sends the third delay determination message, and the time when the target base station receives the third delay determination message, determining a unidirectional forwarding delay of the base station 700 to the target base station, and according to the target base station The unidirectional forwarding delay to the base station 700 and the unidirectional forwarding delay of the base station 700 to the target base station determine the duration of the terminator timer.
  • the processor 720 is configured to invoke the program code stored by the memory 710, and specifically perform the following operations:
  • the target base station Transmitting, by the network interface 740, the fourth time delay determination message to the target base station, where the fourth time delay determination message carries the fourth time information, where the fourth time information is used to instruct the base station 700 to send the fourth time delay determination a time of the message, so that the target base station determines, according to the time when the base station 700 sends the fourth delay determination message, and the time when the target base station receives the fourth delay determination message, the target base station determines the base station 700 to The unidirectional forwarding delay of the target base station, and determining the duration of the terminator timer according to the unidirectional forwarding delay of the base station 700 to the target base station.
  • the base station 700 may correspond to the source base station in the method 100 to the method 300, and the corresponding operations of the source base stations in the methods 100 to 300 may be implemented.
  • the delay determining message is transmitted between the source base station and the target base station, so that the target base station determines the forwarding time and the receiving time determined by the transmission time according to the delay between the target base station and the source base station. Determining the duration of the terminator timer, the target base station determines the duration of the terminator timer according to the forwarding delay of the target base station and the forwarding base station, so that the duration of the terminator timer can be set more reasonably, thereby avoiding the target base station being too long.
  • the duration of the data can make the time sorting of the forwarded data and the new data more reasonable, that is, there is no need to wait for a long time to send new data, and the new data is not sent in advance, so that the sending time of the forwarded data is short, and packet loss occurs. .
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions such as those implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.

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

Abstract

La présente invention concerne, dans certains modes de réalisation, un procédé de transmission de données et une station de base. Le procédé comporte les étapes suivantes: une station de base de destination d'un équipement d'utilisateur établit un canal de réexpédition avec une station de base d'origine de l'équipement d'utilisateur; la station de base de destination détermine un retard de réexpédition avec la station de base d'origine; et la station de base de destination détermine la durée d'un temporisateur de repère de fin en fonction du retard de réexpédition. Les modes de réalisation de la présente invention permettent d'éviter que la station de base de destination attende trop longtemps des données réexpédiées envoyées par la station de base d'origine, provoquant un faible débit d'émission de données ou une interruption de l'émission de données, ou permettent d'éviter que le temps d'attente de la station de base de destination soit court, conduisant la station de base de destination à recevoir les données réexpédiées en provenance de la station de base d'origine lorsqu'elle commence à émettre de nouvelles données et à éliminer les données réexpédiées, ce qui se traduit par un problème de perte de paquets.
PCT/CN2014/074608 2014-04-02 2014-04-02 Procédé de transmission de données et station de base WO2015149299A1 (fr)

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CN201480000484.8A CN104170461B (zh) 2014-04-02 2014-04-02 数据传输方法和基站

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CN109905897B (zh) 2017-12-08 2022-11-18 华为技术有限公司 数据传输的方法和装置
CN108337709B (zh) * 2017-12-26 2021-08-24 北京新岸线移动通信技术有限公司 一种跨小区切换的方法及系统
CN111132195B (zh) * 2019-12-19 2022-05-03 京信网络系统股份有限公司 数据倒换方法、装置、计算机设备和存储介质
CN113630816A (zh) * 2020-05-06 2021-11-09 华为技术有限公司 一种数据传输方法及装置

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CN101572928A (zh) * 2008-04-30 2009-11-04 华为技术有限公司 一种切换方法及通讯系统以及相关设备
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