WO2017121224A1 - Procédé, dispositif et système de transmission de données - Google Patents

Procédé, dispositif et système de transmission de données Download PDF

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Publication number
WO2017121224A1
WO2017121224A1 PCT/CN2016/110111 CN2016110111W WO2017121224A1 WO 2017121224 A1 WO2017121224 A1 WO 2017121224A1 CN 2016110111 W CN2016110111 W CN 2016110111W WO 2017121224 A1 WO2017121224 A1 WO 2017121224A1
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WIPO (PCT)
Prior art keywords
message
user data
network element
downlink user
interface
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PCT/CN2016/110111
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English (en)
Chinese (zh)
Inventor
陆婷
谢峰
余媛芳
黄梅青
高音
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中兴通讯股份有限公司
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Publication of WO2017121224A1 publication Critical patent/WO2017121224A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Definitions

  • the present invention relates to the field of communications, and in particular, to a data transmission method, apparatus, and system.
  • M2M (Machine to Machine) communication is an important subject of the fifth generation of mobile communication technology (5G), and an important application field for wireless communication in the future.
  • 5G mobile communication technology
  • NB-IoT Narrow Band-Internet of Things
  • Low-throughput wireless communication services are provided in the frequency band for NB-IoT low-cost terminals (UE, User Equipment).
  • Control plane optimization mode the data radio bearer (DRB, Data Radio Bearer) will not be established on the terminal and the network side, and the access layer (AS, Access Stratum) security context will not be established.
  • the data is encapsulated into a non-access stratum. (NAS, Non-Access Stratum) Protocol Data Unit (PDU) is attached to the control plane signaling.
  • NAS Non-Access Stratum
  • PDU Protocol Data Unit
  • (2) User plane optimization mode The terminal and the network side establish a complete connection, and use DRB to transmit data. After the data transmission is completed, the terminal and the network side save the bearer information context, the AS security context, etc. through the suspending process, and then send the data again. The two parties restore the previously saved context through the recovery process, and continue to use the DRB bearer to transmit data; this method is not much different from the existing process, and there is no significant limitation on the length of the data packet, but the effect of saving signaling is limited.
  • the information of the Preferred Network Behaviour indication is carried in the Attach Request message, indicating the network behavior that the terminal can support, for example, including at least one of the following:
  • the Mobility Management Entity (MME) network element on the network side includes Supported Network Behaviour information in the Attach Accept message to indicate the network behavior it can accept.
  • the network side After the terminal and the network side know each other's capabilities through negotiation, if both the terminal and the network side can support the control plane optimization mode, the network side first performs a normal paging process for the service request initiated by the network side, and then begins to pass.
  • the control plane signaling transmits downlink data, and the process of establishing the S1 user plane between the base station (eNB, evolved Node B) and the serving gateway (SGW, Serving Gateway) initiated by the original MME will not be executed.
  • FIG. 1 is a schematic diagram of a conventional downlink data transmission process.
  • the existing downlink data transmission process has at least the following potential problems:
  • the downlink data (Downlink data) is always cached on the SGW, and subsequent transmissions are made through the existing control plane link, which may cause unnecessary delay. Further, considering future air interface optimization, it may be allowed.
  • the user data is sent to the terminal in advance, but based on the existing process, when the eNB initiates paging or connection establishment, the downlink user data that needs to be sent cannot be obtained, which may affect the feasibility of the above potential air interface optimization scheme. ;
  • the embodiment of the invention provides a data transmission method, device and system, which can reduce downlink data transmission delay and reduce signaling overhead.
  • a data transmission method includes: a first network element on a network side receives downlink user data; and the first network element sends a first message to a second through a first interface. And transmitting, by the network element, the downlink user data, where the first message is a downlink data notification message or a paging message.
  • the sending, by the first network element, the downlink user data, when the first message is sent to the second network element by using the first interface includes:
  • the first network element sequentially sends a first message and a second message carrying the downlink user data.
  • the method before the sending, by the first network element, the first user message to the second network element by using the first interface, the method further includes:
  • the third message receives, by the first network element, the third message from the second network element by using the first interface, and determining, according to the third message, whether to send the first message to the second network element
  • the downlink user data, wherein the third message carries at least one of the following information:
  • the second network element desires to receive downlink user data when receiving the first message Instructions.
  • the first message carries at least one of the following information:
  • the indication information of the transmission mode when the downlink user data is simultaneously transmitted with the first message is simultaneously transmitted with the first message
  • the length information of the user data packet is the length information of the user data packet.
  • the first network element is an SGW in the LTE
  • the second network element is an MME in the LTE
  • the first interface is a control plane interface between the SGW and the MME in the LTE.
  • the first network element is an MME in LTE
  • the second network element is a base station in LTE
  • the first interface is an S1 interface between an MME and a base station in LTE.
  • the embodiment of the present invention further provides a data transmission method, including: the second network element on the network side receives the first message from the first network element by using the first interface, where the first message is a downlink data notification message or a paging The second network element acquires downlink user data according to the first message.
  • the first message carries at least one of the following information:
  • the indication information of the transmission mode when the downlink user data is simultaneously transmitted with the first message is simultaneously transmitted with the first message
  • the downlink user data is Send time point information
  • the length information of the user data packet is the length information of the user data packet.
  • the sending manner when the downlink user data is sent simultaneously with the first message includes:
  • the downlink user data is carried in the first message for sending; or,
  • the downlink user data is carried in a second message sent simultaneously with the first message.
  • the second network element acquires downlink user data according to the first message, and includes:
  • the second network element acquires downlink user data from the first message carrying the downlink user data according to the information carried in the first message;
  • the second network element acquires downlink user data from the second message carrying the downlink user data according to the information carried in the first message.
  • the method further includes: sending, by the second network element, the third message to the first network element The first network element, where the third message carries at least one of the following information:
  • the second network element desires to receive indication information of downlink user data when receiving the first message.
  • the method further includes: determining, by the second network element, that the second network element is small according to characteristics of the downlink user data.
  • the data transmission mode wherein the small data transmission mode includes at least one of the following: a control plane optimization mode and a user plane optimization mode.
  • the characteristics of the downlink user data include at least one of the following:
  • QoS Quality of Service
  • the service characteristics of the downlink user data packet are the service characteristics of the downlink user data packet.
  • the first network element is an MME in LTE
  • the second network element is a base station in LTE
  • the first interface is an S1 interface between an MME and a base station in LTE.
  • the first network element is an SGW in the LTE
  • the second network element is an MME in the LTE
  • the first interface is a control plane interface between the SGW and the MME in the LTE.
  • the method further includes: the second network element sending the fourth message to the third network element by using the second network element And transmitting the downlink user data, where the fourth message is a paging message.
  • sending the downlink user data including:
  • the second network element sequentially sends a fourth message and a fifth message carrying downlink user data.
  • the second network element sends the fourth message to the third network element by using the second interface
  • the method further includes: the second network element receiving the sixth message from the third network element by using the second interface, and determining, according to the sixth message, whether the fourth message is being sent. Sending the downlink user data to the third network element, where the sixth message carries at least one of the following information:
  • the third network element desires to receive indication information of downlink user data when receiving the fourth message.
  • the fourth message carries at least one of the following information:
  • the length information of the user data packet is the length information of the user data packet.
  • the first network element is an SGW in LTE
  • the second network element is an MME in LTE
  • the third network element is a base station in LTE
  • the first interface is an SGW in LTE.
  • the embodiment of the present invention further provides a data transmission apparatus, which is applied to a first network element on the network side, and includes: a first transmission module configured to receive downlink user data; and a second transmission module configured to pass through the first interface When the first message is sent to the second network element, the downlink user data is sent, where the first message is a downlink data notification message or a paging message.
  • the foregoing apparatus further includes: a processing module, configured to determine, according to the third message received from the second network element by using the first interface, whether to send the first message to the second network element Transmitting the downlink user data, where the third message carries at least one of the following information:
  • the second network element desires to receive downlink user data when receiving the first message Instructions.
  • the embodiment of the present invention further provides a data transmission apparatus, which is applied to a second network element on the network side, and includes: a message receiving module, configured to receive a first message from the first network element by using the first interface, where the first message is Regarding a downlink data notification message or a paging message; the data acquisition module is configured to acquire downlink user data according to the first message.
  • the foregoing apparatus further includes: a sending module, configured to send, by using the first interface, a third message to the first network element, where the third message carries at least one of the following information:
  • the second network element desires to receive indication information of downlink user data when receiving the first message.
  • the foregoing apparatus further includes: a transmission mode determining module, configured to determine, according to characteristics of the downlink user data, a small data transmission mode, where the small data transmission mode includes at least one of the following: a control plane Optimization method, user plane optimization method.
  • a transmission mode determining module configured to determine, according to characteristics of the downlink user data, a small data transmission mode, where the small data transmission mode includes at least one of the following: a control plane Optimization method, user plane optimization method.
  • the embodiment of the present invention further provides a data transmission system, which is applied to the network side, and includes: a first network element and a second network element; and the first network element is configured to send the first message to the second interface by using the first interface. And transmitting, by the network element, the downlink user data, where the first message is a downlink data notification message or a paging message; and the second network element is configured to acquire the downlink according to the first message.
  • Link user data is applied to the network side, and includes: a first network element and a second network element; and the first network element is configured to send the first message to the second interface by using the first interface. And transmitting, by the network element, the downlink user data, where the first message is a downlink data notification message or a paging message; and the second network element is configured to acquire the downlink according to the first message.
  • Link user data is applied to the network side, and includes: a first network element and a second network element; and the first network element is configured to send the first message to
  • the system further includes: a third network element, configured to acquire the downlink user data according to a paging message received from the second network element by using the second interface.
  • a third network element configured to acquire the downlink user data according to a paging message received from the second network element by using the second interface.
  • the second network element is further configured to determine, according to characteristics of the downlink user data, a small data transmission manner, where the small data transmission is performed, after acquiring the downlink user data.
  • the method includes at least one of the following: control plane optimization mode, user plane optimization mode.
  • the network side network element sends the downlink user data when transmitting the downlink data notification message; or the network side network element sends the downlink user data when sending the paging message.
  • the embodiments of the present invention provide an efficient and flexible downlink data transmission mode, which can reduce downlink data transmission delay and reduce signaling overhead.
  • the network side network element determines the adopted small data transmission mode according to the characteristics of the received downlink user data. In this way, the network element can perform corresponding optimization operations according to the downlink user data that is delivered in time, thereby reducing power consumption of the terminal.
  • FIG. 1 is a schematic diagram of a current downlink data transmission process
  • FIG. 2 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 3 is another flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a data transmission system according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a data transmission method according to an embodiment of the present invention. As shown in FIG. 2, the data transmission method provided in this embodiment is applied to the first network element on the network side, and includes the following steps:
  • Step 201 The first network element receives downlink user data.
  • Step 202 The first network element sends downlink user data when the first message is sent to the second network element by using the first interface, where the first message is a downlink data notification message or a paging message.
  • step 202 includes:
  • the first network element sends a second message carrying downlink user data while sending the first message
  • the first network element sequentially sends the first message and the second message carrying the downlink user data.
  • step 202 the foregoing method further includes:
  • the third message carries at least one of the following information:
  • the second network element desires to receive the indication information of the downlink user data when receiving the first message.
  • the first message carries at least one of the following information:
  • the indication information of the transmission mode when the downlink user data is simultaneously transmitted with the first message is simultaneously transmitted with the first message
  • the length information of the user data packet is the length information of the user data packet.
  • the sending manner when the downlink user data is sent simultaneously with the first message includes:
  • the downlink user data is carried in the first message for transmission; or,
  • the downlink user data is carried in a second message sent simultaneously with the first message.
  • the first network element is a service network element (SGW, Service Gateway) in Long Term Evolution (LTE)
  • the second network element is a mobility management entity (MME, Mobility Management Entity) in LTE
  • An interface is a control plane interface between the SGW and the MME in LTE.
  • the first message may be a Downlink Data Notification message in FIG. 1, or may be another existing message or a newly added message.
  • the second message may be a Downlink Data message, or other existing messages or new messages.
  • the third message may be any message sent from the MME to the SGW.
  • the first network element is an MME in the LTE
  • the second network element is a base station in the LTE
  • the first interface is an S1 interface between the MME and the base station in the LTE.
  • the first message may be a paging message in FIG. 1, or may be other existing messages or newly added messages.
  • the second message may be a Downlink S1-AP message, or may be other existing messages or new messages.
  • the third message may be any message sent from the base station to the MME.
  • FIG. 3 is another flowchart of a data transmission method according to an embodiment of the present invention. As shown in FIG. 3, the data transmission method provided in this embodiment is applied to the second network element on the network side, and includes the following steps:
  • Step 301 The second network element receives the first message from the first network element by using the first interface, where the first message is a downlink data notification message or a paging message.
  • Step 302 The second network element acquires downlink user data according to the first message.
  • the first message carries at least one of the following information:
  • the indication information of the transmission mode when the downlink user data is simultaneously transmitted with the first message is simultaneously transmitted with the first message
  • the length information of the user data packet is the length information of the user data packet.
  • the sending manner when the downlink user data is sent simultaneously with the first message includes:
  • the downlink user data is carried in the first message for transmission; or,
  • the downlink user data is carried in a second message sent simultaneously with the first message. give away.
  • step 302 includes:
  • the second network element acquires downlink user data from the first message carrying the downlink user data according to the information carried in the first message;
  • the second network element acquires downlink user data from the second message carrying the downlink user data according to the information carried in the first message.
  • the foregoing method further includes:
  • the second network element sends a third message to the first network element by using the first interface, where the third message carries at least one of the following information:
  • the second network element desires to receive the indication information of the downlink user data when receiving the first message.
  • the method further includes: determining, by the second network element, the adopted small data transmission manner according to the feature of the downlink user data, where the small data transmission mode includes at least one of the following: Face optimization mode, user face optimization mode.
  • the characteristics of the downlink user data include at least one of the following:
  • QoS Quality of Service
  • the service characteristics of the downlink user data packet are the service characteristics of the downlink user data packet.
  • the first network element is an MME in the LTE
  • the second network element is a base station in the LTE
  • the first interface is an S1 interface between the MME and the base station in the LTE.
  • the first message may be a paging message in FIG. 1, or may be other existing messages or newly added messages.
  • the second message may be a Downlink S1-AP message, or may be other existing messages or new messages.
  • the third message may be any message sent from the base station to the MME.
  • the first network element is an SGW in the LTE
  • the second network element is an MME in the LTE
  • the first interface is a control plane interface between the SGW and the MME in the LTE.
  • the first message may be a Downlink Data Notification message in FIG. 1, or may be another existing message or a newly added message.
  • the second message may be a Downlink Data message in FIG. 1, or may be other existing messages or new messages.
  • the third message may be any message sent from the MME to the SGW.
  • the method further includes: when the second network element sends the fourth message to the third network element by using the second interface, the downlink user data is sent, where the fourth message is a paging message.
  • sending the downlink user data including:
  • the second network element sends a fifth message carrying the downlink user data while sending the fourth message;
  • the second network element sequentially sends a fourth message and a fifth message carrying downlink user data.
  • the second network element sends the fourth message to the third network element by using the second interface, and before the sending the downlink user data, the method further includes:
  • the second network element receives the sixth message from the third network element by using the second interface, and determines, according to the sixth message, whether to send downlink user data when sending the fourth message to the third network element, where the sixth message carries the following At least one message:
  • the third network element desires to receive the indication information of the downlink user data when receiving the fourth message.
  • the fourth message carries at least one of the following information:
  • the length information of the user data packet is the length information of the user data packet.
  • the sending manner when the downlink user data and the fourth message are simultaneously sent include:
  • the downlink user data is carried in the fourth message for transmission; or,
  • the downlink user data is carried in a fifth message sent simultaneously with the fourth message.
  • the first network element is an SGW in the LTE
  • the second network element is an MME in the LTE
  • the third network element is a base station in the LTE
  • the first interface is a control plane interface between the SGW and the MME in the LTE.
  • the second interface is an S1 interface between the MME and the base station in LTE.
  • the first message may be a Downlink Data Notification message in FIG. 1, or may be another existing message or a newly added message.
  • the second message may be a Downlink Data message in FIG. 1, or may be other existing messages or new messages.
  • the third message may be any message sent from the MME to the SGW.
  • the fourth message may be the paging message in FIG. 1, or may be other existing messages or new messages.
  • the fifth message may be a Downlink S1-AP message, or other existing or new messages.
  • the sixth message may be any message sent from the base station to the MME.
  • NB-IoT has low mobility or no mobility. After a certain paging optimization mode, the paging range can be limited to a single eNB or even a single cell;
  • the first network element is an SGW in the LTE
  • the second network element is an MME in the LTE
  • the first interface is a control plane interface between the SGW and the MME in the LTE.
  • Step 401 The SGW receives downlink user data from a Packet Data Network Gateway (PGW).
  • PGW Packet Data Network Gateway
  • Step 402 The SGW sends downlink user data when the downlink user data notification message (first message) is sent to the MME on the control plane interface with the MME.
  • the SGW may send a downlink user data notification message carrying downlink user data; or the SGW may send a downlink user data message (second message) while transmitting the downlink user data notification message. Or, the SGW sequentially transmits a downlink user data notification message and a downlink user data message.
  • the downlink user data notification message carries at least one of the following information:
  • the indication information of the transmission mode when the downlink user data and the downlink user data notification message are simultaneously transmitted wherein the transmission method includes, for example, the downlink user data is encapsulated and transmitted in a downlink user data notification message, or The downlink user data is encapsulated in a second message sent simultaneously with the downlink user data notification message;
  • the duration information that needs to wait after receiving the downlink user data notification message When the downlink user data notification message and the downlink user data are sequentially transmitted, the duration information that needs to wait after receiving the downlink user data notification message;
  • the length information of the user data packet is the length information of the user data packet.
  • Step 403 The MME acquires downlink user data, and determines a small data transmission mode according to at least one of the following characteristics of the user data:
  • the service characteristics of the downlink user data packet are the service characteristics of the downlink user data packet.
  • the MME decapsulates the downlink user data notification message to obtain downlink user data; when the SGW is transmitting the downlink user data notification At the same time as the message, when the downlink user data message is sent, the MME obtains downlink user data from the downlink user data message; when the SGW sequentially transmits the downlink user data notification message and the downlink user data message, The MME obtains downlink user data from the downlink user data message.
  • the small data transmission method includes at least one of the following: control plane optimization mode and user plane optimization mode.
  • Step 404 The MME performs a corresponding process according to the adopted small data transmission mode.
  • the method further includes: sending, by the MME, a third message on a control plane interface with the SGW;
  • the third message carries the following information:
  • the MME Whether the MME expects to receive indication information of downlink user data when receiving the downlink user data notification message.
  • the SGW determines whether to perform step 402 according to the third message.
  • the third message may be any message sent from the MME to the SGW, or may be other existing messages or newly added messages.
  • the first network element is the SGW in the LTE
  • the second network element is the MME in the LTE
  • the third network element is the base station in the LTE
  • the first interface is the control plane between the SGW and the MME in the LTE.
  • the interface is a S1 interface between the MME and the base station in the LTE.
  • Step 501 The MME receives the downlink user data.
  • the specific process of the MME receiving the downlink user data from the SGW is the same as that in the first embodiment, and therefore no further details are provided herein.
  • Step 502 The MME sends downlink user data when sending a paging message (fourth message) to the base station on the S1 interface between the base station and the base station.
  • the MME may send a paging message carrying downlink user data; or, the MME may send a Downlink S1-AP message (fifth message) carrying downlink user data while transmitting the paging message; or The MME may sequentially send a paging message and a Downlink S1-AP message carrying downlink user data.
  • the paging message carries at least one of the following information:
  • the indication information of the transmission mode when the downlink user data is sent simultaneously with the paging message where the transmission mode includes, for example, the downlink user data is encapsulated in a paging message for transmission, or the downlink user data is encapsulated in Sending a fifth message sent simultaneously by the paging message;
  • the duration information that needs to wait after receiving the paging message When the paging message and the downlink user data are sequentially transmitted, the duration information that needs to wait after receiving the paging message;
  • the length information of the user data packet is the length information of the user data packet.
  • Step 503 The base station acquires downlink user data, and determines a small data transmission mode according to at least one of the following characteristics of the user data:
  • the service characteristics of the downlink user data packet are the service characteristics of the downlink user data packet.
  • the base station decapsulates the paging message to obtain downlink user data; when the MME sends the fifth message while transmitting the paging message, the base station The downlink user data is obtained from the fifth message; when the MME sequentially sends the paging message and the fifth message, the base station obtains downlink user data from the fifth message.
  • the small data transmission method includes at least one of the following: control plane optimization mode and user plane optimization mode.
  • Step 504 The base station performs a corresponding process according to the adopted small data transmission mode.
  • the method further includes: the base station sending the sixth message on the S1 interface between the MME and the MME;
  • the sixth message carries the following information:
  • the base station has indication information of data caching capability
  • the base station desires to receive indication information of downlink user data when receiving the paging message.
  • the MME determines whether to perform step 502 according to the sixth message.
  • the sixth message may be any message sent from the base station to the MME, or may be other existing messages or newly added messages.
  • the first network element is an MME in LTE
  • the second network element is a base station in LTE
  • the first interface is an S1 interface between the base station and the MME in LTE.
  • Step 601 The MME receives downlink user data.
  • Step 602 The MME sends downlink user data when sending a paging message (first message) to the base station on the S1 interface between the base station and the base station.
  • the MME may send a paging message carrying downlink user data; or, the MME may send a Downlink S1-AP message (second message) carrying downlink user data while transmitting the paging message; or The MME may sequentially send a paging message and a Downlink S1-AP message carrying downlink user data.
  • the paging message carries at least one of the following information:
  • the indication information of the transmission mode when the downlink user data is sent simultaneously with the paging message where the transmission mode includes, for example, the downlink user data is encapsulated in a paging message for transmission, or the downlink user data is encapsulated in Sending a fifth message sent simultaneously by the paging message;
  • the duration information that needs to wait after receiving the paging message When the paging message and the downlink user data are sequentially transmitted, the duration information that needs to wait after receiving the paging message;
  • the length information of the user data packet is the length information of the user data packet.
  • Step 603 The base station acquires downlink user data, and determines a small data transmission mode according to at least one of the following characteristics of the user data:
  • the service characteristics of the downlink user data packet are the service characteristics of the downlink user data packet.
  • the base station when the MME sends a paging message carrying downlink user data, the base station Decapsulating the paging message to obtain downlink user data; when the MME sends the second message while sending the paging message, the base station obtains downlink user data from the second message; when the MME sequentially sends the paging message And the second message, the base station obtains downlink user data from the second message.
  • the small data transmission method includes at least one of the following: control plane optimization mode and user plane optimization mode.
  • Step 604 The base station performs a corresponding process according to the adopted small data transmission mode.
  • the method further includes: the base station sending the third message on the S1 interface between the MME and the MME;
  • the third message carries the following information:
  • the base station has indication information of data caching capability
  • the base station desires to receive indication information of downlink user data when receiving the paging message.
  • the MME determines whether to perform step 602 according to the third message.
  • the third message may be any message sent from the base station to the MME, or may be other existing messages or newly added messages.
  • the embodiment of the present invention further provides a data transmission apparatus, which is applied to a first network element on the network side, and includes: a first transmission module configured to receive downlink user data; and a second transmission module configured to pass the When an interface sends the first message to the second network element, the downlink user data is sent, where the first message is a downlink data notification message or a paging message.
  • the device further includes: a processing module, configured to determine, according to the third message received from the second network element by using the first interface, whether to send the first message to the second network element Transmitting the downlink user data, where the third message carries at least one of the following information:
  • the second network element desires to receive indication information of downlink user data when receiving the first message.
  • the first network element is an MME in the LTE
  • the second network element is a base station in the LTE
  • the first interface is an S1 interface between the MME and the base station in the LTE.
  • the first network element is an SGW in the LTE
  • the second network element is an MME in the LTE
  • the first interface is a control plane interface between the SGW and the MME in the LTE.
  • the embodiment of the present invention provides an efficient and flexible downlink data transmission method, which can ensure that downlink user data is timely delivered to the corresponding network element and the network element performs corresponding optimization operations, thereby reducing downlink data. Transmission delay, reducing signaling overhead and reducing terminal power consumption.
  • the embodiment of the present invention further provides a data transmission apparatus, which is applied to a second network element on the network side, and includes: a message receiving module, configured to receive a first message from the first network element by using the first interface, where the first The message is about a downlink data notification message or a paging message; the data acquisition module is configured to acquire downlink user data according to the first message.
  • the foregoing apparatus further includes: a sending module, configured to send, by using the first interface, a third message to the first network element, where the third message carries at least one of the following information:
  • the second network element desires to receive indication information of downlink user data when receiving the first message.
  • the foregoing apparatus further includes: a transmission mode determining module, configured to determine, according to characteristics of the downlink user data, a small data transmission mode, where the small data transmission mode includes at least one of the following: a control plane Optimization method, user plane optimization method.
  • a transmission mode determining module configured to determine, according to characteristics of the downlink user data, a small data transmission mode, where the small data transmission mode includes at least one of the following: a control plane Optimization method, user plane optimization method.
  • the first network element is an MME in the LTE
  • the second network element is a base station in the LTE
  • the first interface is an S1 interface between the MME and the base station in the LTE.
  • the first network element is an SGW in the LTE
  • the second network element is an MME in the LTE
  • the first interface is a control plane interface between the SGW and the MME in the LTE.
  • the first transmission module and the message receiving module are, for example, wireless communication components having a receiving function
  • the second transmission module and the transmitting module are, for example, wireless communications having a transmitting function.
  • the component, the data acquisition module, the processing module, and the transmission mode determination module are, for example, processors.
  • the embodiments of the present invention are not limited thereto.
  • the functions of the above modules may also be implemented by a processor executing programs and/or instructions stored in the memory.
  • the embodiment of the present invention further provides a data transmission system, including: a first network element and a second network element, where the first network element is configured to send when the first message is sent to the second network element by using the first interface.
  • the downlink user data wherein the first message is a downlink data notification message or a paging message; and the second network element is configured to acquire the downlink user data according to the first message.
  • the first network element is an MME in the LTE
  • the second network element is a base station in the LTE
  • the first interface is an S1 interface between the MME and the base station in the LTE.
  • the first network element is an SGW in the LTE
  • the second network element is an MME in the LTE
  • the first interface is a control plane interface between the SGW and the MME in the LTE.
  • the system further includes: a third network element, configured to acquire the downlink user data according to a paging message received from the second network element by using the second interface.
  • a third network element configured to acquire the downlink user data according to a paging message received from the second network element by using the second interface.
  • the second network element is further configured to determine, according to characteristics of the downlink user data, a small data transmission manner, where the small data transmission is performed, after acquiring the downlink user data.
  • the method includes at least one of the following: control plane optimization mode, user plane optimization mode.
  • FIG. 4 is a schematic diagram of a data transmission system according to an embodiment of the present invention.
  • the data transmission system provided in this embodiment includes: a first network element, a second network element, and a third network element.
  • the first network element is the SGW in the LTE
  • the second network element is the MME in the LTE
  • the third network element is the base station in the LTE
  • the first interface is the control plane interface between the SGW and the MME in the LTE
  • the second The interface is an S1 interface between the MME and the base station in LTE.
  • an embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions, where the computer executable instructions are executed to implement the data transmission method on the first network element side.
  • an embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions, where the computer executable instructions are executed to implement the data transmission method on the second network element side.
  • each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function.
  • the invention is not limited to any specific form of combination of hardware and software.
  • a patch software upgrade method and system provided by the embodiments of the present invention have the following beneficial effects: an efficient and flexible downlink data transmission mode is provided, which can reduce downlink data transmission delay and reduce signaling overhead.

Abstract

L'invention concerne un procédé, un dispositif et un système de transmission de données. Lorsqu'un premier élément de réseau sur un côté réseau envoie un premier message à un second élément de réseau par le biais d'une première interface, des données d'utilisateur de liaison descendante sont envoyées, le premier message étant un message de notification de données d'utilisateur de liaison descendante ou un message de radiomessagerie. Le second élément de réseau acquiert les données d'utilisateur de liaison descendante conformément au premier message. Après l'acquisition des données d'utilisateur de liaison descendante par le second élément de réseau acquiert, en fonction de la caractéristique des données d'utilisateur de liaison descendante, on détermine quel procédé de transmission de données de petite taille optimisé adopter. Dans la présente invention, le retard de transmission de données de liaison descendante peut être réduit et le surdébit de signalisation est diminué.
PCT/CN2016/110111 2016-01-12 2016-12-15 Procédé, dispositif et système de transmission de données WO2017121224A1 (fr)

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