WO2014127677A1 - 数据传输方法、装置及系统 - Google Patents

数据传输方法、装置及系统 Download PDF

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Publication number
WO2014127677A1
WO2014127677A1 PCT/CN2013/091163 CN2013091163W WO2014127677A1 WO 2014127677 A1 WO2014127677 A1 WO 2014127677A1 CN 2013091163 W CN2013091163 W CN 2013091163W WO 2014127677 A1 WO2014127677 A1 WO 2014127677A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
network device
data processing
small data
processing capability
Prior art date
Application number
PCT/CN2013/091163
Other languages
English (en)
French (fr)
Inventor
崔云鹏
戴谦
毛磊
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US14/770,454 priority Critical patent/US20160007213A1/en
Priority to EP13875818.0A priority patent/EP2961205A4/en
Publication of WO2014127677A1 publication Critical patent/WO2014127677A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/20Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/0215Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Definitions

  • the present invention relates to the field of communications, and in particular to a data transmission method, apparatus, and system.
  • a user equipment User Equipment, UE for short
  • the amount of data sent or received by the UE is not very large (usually tens to hundreds of bytes), and only takes up less physical. Resources can complete the transmission of data, such as smart home business, background business, and so on.
  • UE User Equipment
  • the existing protocol standards even if the amount of data transmitted is small, a complete signaling process needs to be established.
  • the signaling overhead generated during data transmission is very large compared with the amount of data transmission, which seriously reduces system efficiency. It is imperative to conduct research on small data transmission characteristics.
  • the research on small data mainly focuses on how to reduce the overhead of Control Plane (CP) signaling caused by data transmission.
  • the solutions that have been proposed at present mainly include small data transmission using control plane signaling, small data transmission by short message service, and quick connection establishment.
  • the network and user equipment may differ in whether they support optimized small data transmission methods or which optimized small data transmission methods are supported. This can lead to the failure of the transmission of small data between the user equipment and the network, and even cause an abnormal situation and increase the complexity of the network processing.
  • Embodiments of the present invention provide a data transmission method, apparatus, and system, to at least solve the related art, in which the small data processing capability between the network device and the user equipment may not match, resulting in an optimization that cannot fully utilize small data transmission. The solution even increases the complexity of network processing.
  • a data transmission method including: a user equipment sends data processing capability information of the user equipment to a network device; and the small data transmission by the user equipment determined by the network device And transmitting, by the network device, small data, where the small data is transmitted
  • the method is determined by the network device according to the data processing capability information, and the size of the small data is within a predetermined range.
  • the user equipment sends the data processing capability information to the network device by using one of the following methods: adding an indication for the existing uplink radio resource control (Radio Resource Control, RRC for short) signaling An information element (Information Element, hereinafter referred to as IE) of the data processing capability information; and an uplink access control (MAC) control unit (Control Element, referred to as MAC) for indicating the data processing capability information
  • RRC Radio Resource Control
  • IE Information Element
  • MAC uplink access control
  • Control Element Control Element, referred to as MAC
  • the data processing capability information is added to the uplink non-access stratum (NAS) signaling; the data processing capability information is sent by using an RRC message and/or a NAS message.
  • the user equipment sends the data processing capability information of the user equipment to the network device, where the user equipment sends the data processing capability information to the network device by using a signaling interaction in a connection process with the network device.
  • the connection process between the user equipment and the network device includes one of the following: an RRC connection establishment process, a mobility management process, a session management process, and a handover process.
  • the data processing capability information includes at least one of: information indicating whether the user equipment supports the method for transmitting small data; and one or more methods for transmitting small data indicating that the user equipment is allowed to use Information.
  • a data transmission method including: an access network device sends data processing capability information of the access network device to a user equipment; and the access network device passes the user And the method for transmitting the small data is performed by the device, where the method for transmitting the small data is determined by the user equipment according to the data processing capability information, where the size of the small data is Within the predetermined range.
  • the access network device sends the data processing capability information to the user equipment by using one of the following methods: adding an IE for indicating the data processing capability information to an existing downlink RRC signaling; Adding a downlink MAC CE for indicating the data processing capability information; adding the data processing capability information to the system message; transmitting the data processing capability information by using an RRC message; using a tracking area identifier (TAI)
  • TAI tracking area identifier
  • the linked list performs an indication of the data processing capability information.
  • the information that the access network device sends the data processing capability information of the access network device to the user equipment includes: sending, by the access network device, the signaling device to the user equipment by using a signaling interaction during the connection with the user equipment The data processing capability information.
  • the connection process between the access network device and the user equipment includes one of the following: an RRC connection establishment process, a system message delivery process, a handover process, a mobility management process, and a session management process.
  • the data processing capability information includes at least one of: information indicating whether the access network device supports the method for transmitting small data; and one or more transmissions indicating that the access network device allows use Information about the method of small data.
  • a data transmission method including: a core network device sending data processing capability information of the core network device to a user equipment; where the core network device is determined by the user equipment And the method for transmitting the small data is performed by the user equipment, where the method for transmitting the small data is determined by the user equipment according to the data processing capability information, and the size of the small data is within a predetermined range.
  • the core network device sends the data processing capability information to the user equipment in a manner of: adding an IE for indicating the data processing capability information to an existing downlink non-NAS signaling; The indication of the data processing capability information is performed using a TAI linked list; the data processing capability information is transmitted using a NAS message.
  • the sending, by the core network device, the data processing capability information of the core network device to the user equipment includes: sending, by the core network device, the data to the user equipment by using a signaling interaction in a connection process with the user equipment Processing capability information.
  • the connection process between the core network device and the user equipment includes one of the following: a mobility management process, a session management process.
  • the data processing capability information includes at least one of: information indicating whether the core network device supports the method for transmitting small data; and one or more transmission small data indicating that the core network device is allowed to use Method of information.
  • a data transmission apparatus which is applied to a user equipment, and includes: a first sending module, configured to send data processing capability information of the user equipment to a network device; a method for transmitting small data that is determined by the network device to transmit small data to the network device, where the method for transmitting small data is determined by the network device according to the data processing capability information.
  • the size of the small data is within a predetermined range.
  • a data transmission apparatus which is applied to an access network device, and includes: a second sending module, configured to send data processing capability information of the access network device to a user equipment; a second transmission module, configured to transmit small data by using the user equipment, and the user equipment performs small data transmission, where the method for transmitting small data is determined by the user equipment according to the data processing capability information
  • the size of the small data is within a predetermined range.
  • a data transmission apparatus which is applied to a core network device, and includes: a third sending module, configured to send data processing capability information of the core network device to a user equipment; a transmission module, configured to transmit small data by the user equipment, and transmit the small data to the user equipment, where the method for transmitting the small data is determined by the user equipment according to the data processing capability information
  • the size of the small data is within a predetermined range.
  • a data transmission system including: a user equipment, an access network device, and a core network device, where the user equipment includes the data transmission device applied to the user equipment,
  • the access network device includes the above-mentioned data transmission device applied to the access network device
  • the core network device includes the above-mentioned data transmission device applied to the core network device.
  • the user equipment sends the data processing capability information of the user equipment to the network device, so that the network device learns a method for transmitting small data that can be used by the user equipment, to determine which type can be used when transmitting small data between the two.
  • the same network device can also send the data processing capability information of the network device to the user equipment, ensuring that the user equipment and the network device have the same knowledge in the small data processing capability, and finally the selected small data processing solution is fully utilized.
  • the advantage is to reduce the abnormal situation caused by the mismatch between the network device and the user equipment, and finally reduce the signaling overhead caused by small data transmission, optimize the performance of the network, and improve the efficiency of the system.
  • FIG. 3 is a data transmission according to an embodiment of the present invention.
  • Figure 3 is a block diagram of a data transmission device according to an embodiment of the present invention.
  • Figure 5 is a block diagram 2 of a data transmission device according to an embodiment of the present invention;
  • FIG. 6 is a block diagram 3 of a data transmission apparatus according to an embodiment of the present invention;
  • FIG. 7 is a schematic diagram of a small data processing capability information exchange between a user equipment and an access network device through existing RRC signaling according to a preferred embodiment of the present invention;
  • FIG. 8 is a flowchart of performing small data processing capability information exchange between a user equipment and a core network device according to a preferred embodiment 2 of the present invention;
  • FIG. 9 is a user equipment according to a preferred embodiment 3 of the present invention.
  • FIG. 10 is a flowchart of the access network device according to the preferred embodiment 4 of the present invention indicating the small data processing capability information to the user equipment by using the system message.
  • FIG. 11 is a flowchart of the user equipment knowing the small data processing capability information of the access network device and the core network device through the TAI linked list and system information according to the preferred embodiment 5 of the present invention
  • FIG. 12 is a flowchart according to a preferred embodiment of the present invention.
  • FIG. 14 is a RRC of a user equipment and a target base station according to a preferred embodiment 8 of the present invention.
  • Flowchart for completing small data processing capability information interaction Figure 15 is a bitmap diagram of a small data transmission scheme in accordance with a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.
  • FIG. 1 is a flowchart 1 of a data transmission method according to an embodiment of the present invention. As shown in FIG. 1, the following steps S102 to S104 are included.
  • Step S102 The user equipment sends data processing capability information of the user equipment to the network device.
  • Step S104 The user equipment performs small data transmission by using the method for transmitting small data determined by the network device, where the method for transmitting the small data is determined by the network device according to the data processing capability information, and the size of the small data is within a predetermined range. .
  • the user equipment sends the data processing capability information of the user equipment to the network device, so that the network device learns a method for transmitting small data that can be used by the user equipment, to determine which method can be used when transmitting small data between the two devices.
  • small data An example of small data is that tens to hundreds of bytes of data can be referred to as small data.
  • the foregoing user equipment has small data transmission characteristics, and the foregoing method for transmitting small data may be carrying small data by using control plane signaling, transmitting small data by using a short message service, establishing a connection quickly, and the like.
  • the above methods for transmitting small data are currently optimized solutions for small data transmission, which can save signaling overhead caused by small data transmission.
  • the method of the embodiments of the present invention is also applicable to other schemes for small data transmission. The same is true of the method of transmitting small data in the scheme described from the network device side, which will not be described later.
  • the foregoing data processing capability information includes at least one of the following: information indicating whether the user equipment supports a method of transmitting small data (ie, whether the user equipment supports the use of the optimized small data processing method); indicating one type that the user equipment is allowed to use or A variety of information about the method of transmitting small data (ie, which types of optimized small data processing methods can be used by the user equipment).
  • the above data processing capability information can be used to assist the network device in determining a processing method used when transmitting or receiving small data.
  • the user equipment may send data processing capability information to the network device by using one of the following methods: adding an IE for indicating data processing capability information to the existing uplink RRC signaling; and adding information for indicating data processing capability information.
  • the user equipment sending the data processing capability information of the user equipment to the network device includes: the user equipment sends the data processing capability information to the network device by using a signaling interaction during the connection with the network device.
  • the connection process between the user equipment and the network device includes one of the following: an RRC connection establishment process, a mobility management process, a session management process, and a handover process.
  • FIG. 2 is a second flowchart of the data transmission method according to the embodiment of the present invention. As shown in FIG. 2, the following steps S202 are included. Step S204. Step S202: The access network device sends data processing capability information of the access network device to the user equipment. Step S204: The access network device performs small data transmission by using the method for transmitting small data determined by the user equipment, where the method for transmitting the small data is determined by the user equipment according to the data processing capability information, and the size of the small data is scheduled. Within the scope.
  • the access network device sends the data processing capability information of the access network device to the user equipment, so that the user equipment learns the method for transmitting the small data that the access network device can use to determine the small data transmission between the two.
  • the selected small data processing scheme takes full advantage to reduce the network device and the user equipment due to the capability mismatch.
  • the abnormal situation finally achieves the purpose of reducing signaling overhead caused by small data transmission, optimizing network performance, and improving system efficiency.
  • An example of small data is that tens to hundreds of bytes of data can be referred to as small data.
  • the data processing capability information includes at least one of the following: information indicating whether the access network device supports the method for transmitting the small data (that is, whether the access network device supports the use of the optimized small data processing method); indicating the access network device Information about one or more methods of transmitting small data that are allowed to be used (ie, which optimized small data processing methods are available to the access device).
  • the above data processing capability information can be used to assist the user equipment in determining a processing method used when transmitting or receiving small data.
  • the access network device may send data processing capability information to the user equipment in the following manner: adding an IE for indicating data processing capability information to the existing downlink RRC signaling; adding an indication for indicating data processing capability Downlink MAC CE of information; adding data processing capability information to system messages; using RRC Message transmission data processing capability information; indication of data processing capability information using a TAI linked list.
  • the RRC message may be newly defined and used exclusively for transmitting data processing capability information.
  • the access network device sends the data processing capability information of the access network device to the user equipment, where: the access network device sends the data processing capability information to the user equipment by using a signaling interaction during the connection with the user equipment.
  • the connection process between the access network device and the user equipment includes one of the following: an RRC connection establishment process, a system message delivery process, a handover process, a mobility management process, and a session management process.
  • FIG. 3 is a flowchart 3 of a data transmission method according to an embodiment of the present invention.
  • Step S302 The core network device sends data processing capability information of the core network device to the user equipment.
  • Step S304 The core network device performs small data transmission by using the method for transmitting small data determined by the user equipment, where the method for transmitting the small data is determined by the user equipment according to the data processing capability information, and the size of the small data is in a predetermined range.
  • the core network device sends the data processing capability information of the core network device to the user equipment, so that the user equipment learns a method for transmitting small data that can be adopted by the core network device, so as to determine that the small data can be used when transmitting small data between the two.
  • a method for transmitting small data that can be adopted by the core network device, so as to determine that the small data can be used when transmitting small data between the two.
  • the selected small data processing scheme takes full advantage to reduce the abnormal situation caused by the network device and the user equipment being mismatched by the capability.
  • the purpose is to reduce the signaling overhead caused by small data transmission, optimize network performance, and improve system efficiency.
  • the foregoing data processing capability information includes at least one of the following: information indicating whether the core network device supports the method for transmitting the small data (that is, whether the core network device supports the use of the optimized small data processing method); indicating that the core network device is allowed to use Information about one or more methods of transmitting small data (ie, which optimized small data processing methods can be used by the core device).
  • the above data processing capability information can be used to assist the user equipment in determining a processing method used when transmitting or receiving small data.
  • the core network device may send data processing capability information to the user equipment by using one of the following methods: adding an IE for indicating data processing capability information to the existing downlink non-NAS signaling; and using the TAI linked list for data processing capability The indication of the information; the data processing capability information is sent using the NAS message. It should be noted that the NAS message can be newly defined and used to transmit data processing capability information.
  • the sending, by the core network device, the data processing capability information of the core network device to the user equipment includes: sending, by the core network device, the data processing capability information to the user equipment by using a signaling interaction during the connection with the user equipment.
  • connection process between the core network device and the user equipment includes one of the following: a mobility management process and a session management process.
  • the apparatus for implementing the above method will be separately described below.
  • the embodiment of the present invention further provides a data transmission apparatus, which is applied to a user equipment, and the apparatus can be used to implement the data transmission method of the embodiment shown in FIG. 1 and its preferred embodiment.
  • 4 is a block diagram showing the structure of a data transmission apparatus according to an embodiment of the present invention. As shown in FIG. 4, the apparatus includes a first transmission module 42 and a first transmission module 44. The structure is described in detail below.
  • the first sending module 42 is configured to send the data processing capability information of the user equipment to the network device.
  • the first transmitting module 44 is coupled to the first sending module 42 and configured to transmit the small data determined by the network device to the network device.
  • the transmission of small data wherein the method of transmitting the small data is determined by the network device according to the data processing capability information, and the size of the small data is within a predetermined range.
  • the first sending module 42 sends the data processing capability information of the user equipment to the network device, so that the network device learns a method for transmitting small data that can be used by the user equipment, so as to determine that the small data can be used when transmitting small data between the two.
  • the foregoing data processing capability information includes at least one of the following: information indicating whether the user equipment supports a method of transmitting small data (ie, whether the user equipment supports the use of the optimized small data processing method); indicating one type that the user equipment is allowed to use or A variety of information about the method of transmitting small data (ie, which types of optimized small data processing methods can be used by the user equipment).
  • the above data processing capability information can be used to assist the network device in determining a processing method used when transmitting or receiving small data.
  • the first sending module 42 may send data processing capability information to the network device by adding an IE for indicating data processing capability information to the existing uplink RRC signaling, and adding data for indicating data processing capability information.
  • the first sending module 42 sends the data processing capability information of the user equipment to the network device, including: sending data processing capability information to the network device by using a signaling interaction during the connection between the user equipment and the network device.
  • the connection process between the user equipment and the network device includes one of the following: an RRC connection establishment process, a mobility management process, a session management process, and a handover process.
  • FIG. 5 is a block diagram showing the structure of a data transmission apparatus according to an embodiment of the present invention. As shown in FIG. 5, the apparatus includes. The structure is described in detail below.
  • the second sending module 52 is configured to send the data processing capability information of the access network device to the user equipment.
  • the second transmission module 54 is coupled to the second sending module 52, and the method for transmitting the small data determined by the user equipment is performed by the user equipment.
  • the transmission of small data wherein the method of transmitting the small data is determined by the user equipment according to the data processing capability information, and the size of the small data is within a predetermined range.
  • the second sending module 52 sends the data processing capability information of the access network device to the user equipment, so that the user equipment learns the method for transmitting the small data that the access network device can use to determine the small transmission between the two.
  • Which method can be used for data which ensures that the user equipment and the network equipment have the same knowledge in the small data processing capability, and finally the selected small data processing scheme takes full advantage to reduce the network device and the user equipment due to the capability mismatch.
  • the abnormal situation caused finally reduces the signaling overhead caused by small data transmission, optimizes network performance, and improves system efficiency.
  • the data processing capability information includes at least one of the following: information indicating whether the access network device supports the method for transmitting the small data (that is, whether the access network device supports the use of the optimized small data processing method); indicating the access network device Information about one or more methods of transmitting small data that are allowed to be used (ie, which optimized small data processing methods are available to the access device).
  • the above data processing capability information can be used to assist the user equipment in determining a processing method used when transmitting or receiving small data.
  • the second sending module 52 may send data processing capability information to the user equipment by adding an IE for indicating data processing capability information to the existing downlink RRC signaling, and adding information for indicating data processing capability information. Downlink MAC CE; adding data processing capability information to the system message; transmitting data processing capability information using the RRC message; and indicating the data processing capability information using the TAI linked list. It should be noted that the RRC message may be newly defined and used exclusively for transmitting data processing capability information.
  • the second sending module 52 sends the data processing capability information of the access network device to the user equipment, including: sending, by the signaling interaction, the number of the user equipment to the user equipment during the connection process between the access network device and the user equipment According to processing capacity information.
  • connection process between the user equipment and the access network device includes one of the following: an RRC connection establishment process, a system message delivery process, a handover process, a mobility management process, and a session management process.
  • the embodiment of the present invention further provides a data transmission device, which is applied to a core network device, and the device can be used to implement the data transmission method of the embodiment shown in FIG. 3 and its preferred embodiment.
  • FIG. 6 is a block diagram 3 of a structure of a data transmission apparatus according to an embodiment of the present invention. As shown in FIG. 6, the apparatus includes. The structure is described in detail below.
  • the third sending module 62 is configured to send the data processing capability information of the core network device to the user equipment.
  • the third transmission module 64 is coupled to the third sending module 62, and is configured to transmit the small data determined by the user equipment and the user equipment.
  • the transmission of the small data is performed, wherein the method for transmitting the small data is determined by the user equipment according to the data processing capability information, and the size of the small data is within a predetermined range.
  • the third sending module 62 sends the data processing capability information of the core network device to the user equipment, so that the user equipment learns a method for transmitting small data that can be adopted by the core network device, to determine when the small data is transmitted between the two.
  • the foregoing data processing capability information includes at least one of the following: information indicating whether the core network device supports the method for transmitting the small data (that is, whether the core network device supports the use of the optimized small data processing method); indicating that the core network device is allowed to use Information about one or more methods of transmitting small data (ie, which optimized small data processing methods can be used by the core device).
  • the above data processing capability information can be used to assist the user equipment in determining a processing method used when transmitting or receiving small data.
  • the third sending module 62 may send data processing capability information to the user equipment by adding an IE for indicating data processing capability information to the existing downlink non-NAS signaling, and using the TAI linked list for data processing capability information. Indication; Send data processing capability information using NAS messages. It should be noted that the NAS message can be newly defined and used to transmit data processing capability information.
  • the third sending module 62 sends the data processing capability information of the core network device to the user equipment, including: sending data processing capability information to the user equipment by using a signaling interaction during the connection between the core network device and the user equipment.
  • connection process between the user equipment and the core network device includes one of the following: a mobility management process and a session management process.
  • the embodiment of the present invention further provides a data transmission system, where the system includes: a user equipment, an access network device, and a core network device, where the user equipment includes the data transmission device applied to the user equipment, and the access network device includes the foregoing
  • the data transmission device applied to the access network device, the core network device includes the above-mentioned data transmission device applied to the core network device.
  • FIG. 7 is a flowchart of performing small data processing capability information exchange between existing user equipment and an access network device according to a preferred embodiment of the present invention. As shown in FIG. 7, the following steps are included. S702 to step S724.
  • Step S702 The user equipment sends a random access preamble sequence to an evolved Node B (Evolved NodeB, eNB for short).
  • eNB evolved Node B
  • the user equipment has data or signaling to send, first select a preamble sequence, and send a preamble sequence to the eNB according to the random access resource information configured by the system.
  • Step S704 the eNB sends a random access response message (Msg2) to the user equipment.
  • the random access response message in the preferred embodiment may include a preamble sequence identifier corresponding to a random access preamble sequence sent by the user equipment, an uplink transmission timing adjustment, an uplink resource allocated for the RRC connection request message, and a cell radio network temporary identifier (Cell).
  • Cell cell radio network temporary identifier
  • Step S706 the user equipment sends an RRC connection request to the eNB.
  • the user equipment After receiving the Msg2, the user equipment sends an RRC connection setup request message by using the uplink resource allocated in the random access response message, requesting to establish an RRC connection.
  • Step S708, the eNB sends an RRC connection setup message to the user equipment.
  • the eNB sends an RRC connection setup message to the user equipment, and is used to establish a Signaling Radio Bearer 1 (SRB1 for short), and allocates an uplink resource for the RRC connection setup complete message to the user equipment.
  • SRB1 Signaling Radio Bearer 1
  • the user equipment informs the network side that the SRB1 is successfully established, and sends the request information to the network side according to the purpose of the connection establishment.
  • the eNB sends the request information to the mobility management entity (Mobile Management Entity, MME for short) by using the initial user equipment message.
  • MME Mobile Management Entity
  • the eNB After receiving the RRC connection setup complete message carrying the NAS protocol data unit (PDU), the eNB sends the NAS PDU to the MME through the initial user equipment message.
  • the MME sends an initial context setup request message to the eNB.
  • the MME informs the eNB of the connection information of the user equipment, including the access layer security context information, the handover restriction information, the quality of service (QoS) information, the tunnel terminal identifier and the address information used by the service gateway for the user plane, and the like. .
  • Step S716 the eNB sends a security mode command message to the user equipment.
  • the eNB sends a security mode command to the user equipment or the Machine Type Communication (MTC) device for activating the security of the user equipment, including the used algorithm.
  • MTC Machine Type Communication
  • the user equipment sends a security mode complete message to the eNB.
  • the user equipment sends a security mode complete message to the eNB, informing the eNB that the security has been activated.
  • Step S720 the eNB sends an RRC connection reconfiguration message to the user equipment.
  • the eNB sends an RRC connection reconfiguration message to the user equipment, and is used to establish a Data Radio Bearer (DRB) and a Signaling Radio Bearer 2 (SRB2) for the user equipment.
  • the eNB may send the small data processing capability information IE to the user equipment by using any downlink RRC signaling.
  • the RRC connection reconfiguration message is used for delivery, and the eNB indicates that the eNB has the best use in the message.
  • the capability information of the small data processing method is notified to the UE by the small data processing method information supported by the eNB in the form of a bitmap. As shown in FIG.
  • step S720 can be performed before step S718.
  • Step S722 the user equipment sends an RRC connection reconfiguration complete message to the eNB.
  • the user equipment sends an RRC Connection Reconfiguration Complete message to the eNB, informing the eNB that the data radio bearer and the SRB2 configuration are completed.
  • the user equipment may send the IE of the small data processing capability message to the network device by using any uplink RRC message.
  • the RRC connection reconfiguration complete message is used for delivery, and the UE indicates in the message that it has the optimized small data.
  • the capability information of the processing method is processed, and the small data processing method information supported by the UE is notified to the eNB in the form of a bitmap. As shown in FIG.
  • the bit position "1" indicates that the eNB supports the small data transmission scheme
  • the bit position "0" indicates the eNB.
  • This small data transmission scheme is not supported.
  • the UE supports two types of small data transmission schemes 1 and 4, and the corresponding M1 and M4 bit positions are "1", and the remaining bit positions are "0".
  • the eNB learns the small data transmission scheme supported by the UE, the small data is transmitted in the subsequent small data transmission process using the scheme 1 and/or the scheme 4.
  • Step S724 the eNB sends an initial context setup response message to the MME.
  • FIG. 8 is a flowchart of performing small data processing capability information interaction between a user equipment and a core network device through NAS signaling according to a preferred embodiment of the present invention. As shown in FIG. 8, the method includes the following steps S802 to S816. Step S802, the user equipment sends a random access preamble sequence to the eNB.
  • the user equipment or the MTC device When the user equipment or the MTC device needs to send data, first select a preamble sequence, and send a preamble sequence to the eNB according to the random access resource information configured by the system. Step S804, the eNB sends a random access response message (Msg2) to the user equipment.
  • the random access response message may include a preamble sequence identifier corresponding to the random access preamble sequence sent by the user equipment, an uplink transmission timing adjustment, an uplink resource allocated for the RRC connection request message, a temporary C-RNTI, and the like.
  • the user equipment sends an RRC connection request to the eNB.
  • the user equipment After receiving the Msg2, the user equipment sends an RRC connection setup request message by using the uplink resource allocated in the random access response message, requesting to establish an RRC connection.
  • the eNB sends an RRC connection setup message to the user equipment.
  • the eNB sends an RRC connection setup message to the user equipment, is used to establish SRB1, and allocates an uplink resource for the RRC connection setup complete message to the user equipment.
  • Step S810 the user equipment sends an RRC connection setup complete message to the eNB.
  • the user equipment informs the network side that the SRB1 is successfully established, and sends the attach request information to the network side according to the purpose of the connection establishment, and indicates in the attach request message that it has the capability information using the optimized small data processing method and the small supported by the UE. Data processing method information.
  • the user equipment may send the IE of the small data processing capability information to the MME by using any uplink NAS signaling, and in the preferred embodiment, the attach request message is used for delivery.
  • the UE supports two types of small data transmission schemes 2 and 3, and the corresponding M2 and B M3 bit positions in FIG. 15 are "1", and the remaining bit positions are "0".
  • Step S812 the eNB sends an attach request (Attach Request) information to the MME by using an initial user equipment message.
  • the eNB receives an attach request message carrying the capability information indicating that it has the optimized small data processing method and the small data transmission method information supported by the UE, and sends the message to the MME through the initial user equipment message. For example, after the MME supports all small data transmission schemes, the MME learns the small data transmission scheme supported by the UE, and then uses the scheme 2 and/or the scheme 3 to transmit the small data in the subsequent small data transmission process.
  • Step S814 the MME sends an initial context setup request message to the eNB.
  • the MME carries the capability information indicating that it has the use-optimized small data processing method and the small data transmission method information supported by the UE in the Attach Accept message.
  • the attach accept message is sent to the UE through an initial context setup request message.
  • the MME may send the small data processing capability information IE to the user equipment by using any downlink NAS signaling.
  • the attach accept message is used for delivery.
  • the MME supports a total of eight small data transmission schemes, and the corresponding M1 to M8 bits are all set to "1".
  • Step S816, the eNB sends an RRC connection reconfiguration message to the UE.
  • the eNB sends, by using the RRC connection reconfiguration message, the capability information carried in the Attach Accept message indicating that it has the optimized small data processing method and the small data transmission method information supported by the UE to the UE.
  • the UE learns from the attach accept message about the processing of the MME regarding the small data.
  • the UE supports two small data transmission schemes 2 and 3.
  • the small data transmission process uses the scheme 2 and/or the scheme 3 to transmit the small data.
  • FIG. 9 is a flowchart of performing interaction between small data processing capability information by MAC CE signaling between a user equipment and an access network device according to a preferred embodiment 3 of the present invention. As shown in FIG.
  • Step S902 the user equipment sends a random access preamble sequence to the eNB.
  • the user equipment has data or signaling to send, first select a preamble sequence, and send a preamble sequence to the eNB according to the random access resource information configured by the system.
  • Step S904 the eNB sends a random access response message (Msg2) to the user equipment.
  • the random access response message in the preferred embodiment may include a preamble sequence identifier corresponding to a random access preamble sequence sent by the user equipment, an uplink transmission timing adjustment, an uplink resource allocated for the RRC connection request message, a temporary C-RNTI, and the like.
  • Step S906 the user equipment sends an RRC connection request to the eNB.
  • the user equipment After receiving the Msg2, the user equipment sends an RRC connection setup request message by using the uplink resource allocated in the random access response message, requesting to establish an RRC connection.
  • Step S908, the eNB sends an RRC connection setup message to the user equipment.
  • the eNB sends an RRC connection setup message to the user equipment, and is used to establish the SRB1, and allocates an uplink resource for the RRC connection setup complete message to the user equipment, and the eNB uses the MAC CE to indicate to the UE the capability information of the eNB supporting the optimized small data processing method. And small data processing method information that the eNB can use.
  • the eNB may use the MAC CE to send the small data processing capability information IE to the user equipment in any downlink RRC signaling or data transmission.
  • the MAC CE is used to transmit related information to the user equipment when the RRC connection reconfiguration message is delivered.
  • the capability information of the eNB supporting the optimized small data processing method and the logical channel identifier (LCID) corresponding to the small data processing method information MAC CE that the eNB can use are as shown in Table 1.
  • sequence numbers are assigned in the reserved sequence number, and a sequence number (01011) is used to define capability information of the eNB supporting the optimized small data processing method, and a sequence number (01100) is used to define the optimized small data processing method information that the eNB can use.
  • a sequence number 01100
  • the receiving end After the receiving end reads the LCID, it can know that there is an eNB in the corresponding MAC PDU. With small data transmission capability and small data transmission scheme information supported by the eNB, the data in the MAC CE can then be read.
  • setting the capability information of the eNB to support the optimized small data processing method to "1" indicates that the eNB supports the optimized small data processing, and the bit corresponding to the small data transmission scheme supported by the eNB is defined in FIG.
  • the UE supports two types of small data transmission schemes 7 and 8. After the UE learns the small data transmission scheme supported by the eNB, the scheme uses the scheme 7 and/or the scheme 8 to transmit the small data in the subsequent small data transmission process. .
  • Step S910 the user equipment sends an RRC connection setup complete message to the eNB. The user equipment informs the network side that the SRB1 is successfully established, and sends the request information to the network side according to the purpose of the connection establishment.
  • the UE simultaneously uses the MAC CE to indicate to the eNB capability information of the small data processing method supported by the UE and the small data processing method information supported by the UE.
  • the UE may use the MAC CE to send a small data processing capability IE to the eNB in any uplink RRC signaling or data transmission.
  • the MAC CE is used to transmit related information to the eNB when the RRC connection setup complete message is delivered.
  • the capability information of the small data processing method supported by the UE and the LCID corresponding to the small data processing method information MAC CE supported by the UE are defined as the uplink shared channel LCID table shown in Table 2. Table 2
  • serial number 01100 is used to define a small data processing scheme supported by the UE.
  • the receiving end reads the LCID, it can be known that the corresponding MAC PDU has the small data processing capability supported by the UE and the small data processing scheme information supported by the UE, and then the data in the MAC CE can be read.
  • the value of the small data processing capability information that is supported by the UE is set to "1" to indicate that the UE supports the optimized small data processing, and the small data transmission schemes M7 and M8 supported by the UE are defined in FIG.
  • the bit position is "1", and the rest are all set to "0", indicating that the UE supports two types of small data transmission schemes 7 and 8. In the preferred embodiment, the UE supports two small data transmission schemes 7 and 8.
  • the eNB uses the scheme 7 and/or the scheme 8 to transmit the small data in the subsequent small data transmission process. .
  • Step S912 the eNB sends the request information to the MME by using an initial user equipment message.
  • the eNB After receiving the RRC connection setup complete message carrying the NAS PDU, the eNB sends the NAS PDU to the MME through the initial user equipment message.
  • the MME sends an initial context setup request message to the eNB.
  • the MME informs the eNB of the connection information of the user equipment, including the access layer security context information, the handover restriction information, the QoS information, the tunnel terminal identifier and the address information used by the serving gateway for the user plane, and the like.
  • Step S916 the eNB sends a security mode command message to the user equipment.
  • the eNB sends a security mode command to the user equipment or the MTC device for activating the security of the user equipment, including the used algorithm and the like.
  • the user equipment sends a security mode complete message to the eNB.
  • the user equipment sends a security mode complete message to the eNB, informing the eNB that the security has been activated.
  • Step S920 the eNB sends an RRC connection reconfiguration message to the user equipment.
  • the eNB sends an RRC connection reconfiguration message to the user equipment, where the DRB and the SRB2 are established for the user equipment. It should be noted that step S920 can be performed before step S918.
  • Step S922 the user equipment sends an RRC connection reconfiguration complete message to the eNB.
  • the user equipment sends an RRC Connection Reconfiguration Complete message to the eNB, informing the eNB that the data radio bearer and the SRB2 configuration are completed.
  • Step S924 the eNB sends an initial context setup response message to the MME.
  • FIG. 10 is a flowchart showing the small data processing capability information of the access network device according to the preferred embodiment 4 of the present invention to the user equipment by using the system message. As shown in FIG. 10, the following steps S1002 to S1010 are included. Step S1002: The user equipment selects or reselects to the current cell. The user equipment selects to the current cell according to the cell selection or reselection criteria, and camps on the current cell. Step S1004: The user equipment obtains information of a Master Information Block (MIB) sent by the eNB.
  • MIB Master Information Block
  • the primary information block information obtained by the UE mainly includes information such as a downlink bandwidth of the cell and a system frame number, and is used to obtain other information from the cell.
  • the user equipment obtains a System Information Block (SIB) type 1.
  • SIB1 System Information Block
  • the information block mainly includes information for cell access restriction, such as whether the cell is prohibited from accessing information, etc., and the information block further includes scheduling information of other system information blocks.
  • Step S1008 The user equipment obtains SIB2 information.
  • the user equipment obtains SIB2 information, and the information block mainly includes radio resource configuration information and the like.
  • the eNB adds capability information supporting the optimized small data processing method and the supported small data processing scheme to the SIB2, and the eNB supports the optimized small data capability information bit position "1" to indicate that the optimized small data transmission is supported.
  • the bit positions corresponding to the small data transmission schemes M5 and M6 supported by the eNB are "1", and the rest are all set to "0".
  • the eNB may send a small data processing capability IE to the UE using any SIB message.
  • the small data processing related information delivered to the user equipment is added in the SIB2.
  • Step S1010 The user equipment determines a small data transmission scheme used in a subsequent small data transmission process.
  • the small data processing scheme supported by the user equipment is M3 and M8.
  • Preferred embodiment five 11 is a flow chart of the user equipment knowing the small data processing capability information of the access network device and the core network device through the TAI list and system information according to the preferred embodiment 5 of the present invention, as shown in FIG. Step S1102 to step S1114.
  • Step S1102 The user equipment selects or reselects to the current cell. The user equipment selects to the current cell according to the cell selection or reselection criteria, and camps on the current cell.
  • Step S1104 The user equipment obtains MIB information sent by the eNB.
  • the primary information block information obtained by the UE mainly includes information such as a downlink bandwidth of the cell, a system frame number, and the like, for obtaining other information from the small area.
  • Step S1106 The user equipment obtains SIB1.
  • the user equipment obtains SIB1, and the information block mainly includes information for cell access restriction, such as whether the cell is prohibited from accessing information, etc., and the information block further includes scheduling information of other system information blocks.
  • Step S1108 The user equipment obtains the SIB2 information.
  • the user equipment obtains SIB2 information, and the information block mainly includes information such as a Tracking Area Code (TAC) and a radio resource access.
  • TAC Tracking Area Code
  • Step S1110 The user equipment determines, by using the obtained TAI list, whether the MME has the capability to support the optimized small data processing method.
  • the reserved bit position "1" indicates that the eNB corresponding to the TAC in the linked list supports the capability of optimizing the small data processing method.
  • the reserved bit position "0" indicates that the eNB corresponding to the TAC in the linked list does not support optimization.
  • Small data processing method Currently, the eNBs in the TAI list are all managed by the same MME, so the corresponding MME has the capability to support the optimized small data processing method.
  • Step S1112 The user equipment determines, by using the obtained SIB2, whether the eNB has the capability of supporting the optimized small data processing method.
  • the user equipment compares with the TAC in the tracking area identifier list to determine whether the current eNB has the capability to support the optimized small data processing method.
  • the TAI list saved by the UE in the preferred embodiment is as shown in Table 4, which is a TAI list corresponding to the continuous TAC under the same Public Land Mobile Network (PLMN).
  • PLMN Public Land Mobile Network
  • the TAC corresponding to the eNB is included in the TAI list of the reserved bit position "1", that is, the current eNB supports the optimized small data processing method.
  • the user equipment determines whether an optimized small data processing scheme can be used in subsequent small data transmission. In the preferred embodiment, the user equipment learns that the eNB supports the optimized small data processing scheme through the system information and the TAI list, so that the optimized small data processing scheme can be used in the subsequent small data transmission.
  • FIG. 12 is a flowchart of performing small data processing capability information exchange between a user equipment and an access network device according to a preferred embodiment 6 of the present invention. As shown in FIG. 12, the following steps are included. S1202 to step S1228. Step S1202: The user equipment sends a random access preamble sequence to the eNB. When the user equipment has data or signaling needs to be sent, first select a preamble sequence (Preamble) and send a preamble sequence to the eNB according to the random access resource information configured by the system. Step S1204: The eNB sends a random access response message (Msg2) to the user equipment.
  • Preamble preamble sequence
  • Msg2 random access response message
  • the random access response message in the preferred embodiment may include a preamble sequence identifier corresponding to a random access preamble sequence sent by the user equipment, an uplink transmission timing adjustment, an uplink resource allocated for the RRC connection request message, a temporary C-RNTI, and the like.
  • Step S1206 The user equipment sends an RRC connection request to the eNB. After receiving the Msg2, the user equipment sends an RRC connection setup request message by using the uplink resource allocated in the random access response message, requesting to establish an RRC connection.
  • Step S1208 The eNB sends an RRC connection setup message to the user equipment.
  • the eNB sends an RRC connection setup message to the user equipment, is used to establish SRB1, and allocates an uplink resource for the RRC connection setup complete message to the user equipment.
  • Step S1210 The user equipment sends an RRC connection setup complete message to the eNB.
  • the user equipment informs the network side that the SRB1 is successfully established, and sends the request information to the network side according to the purpose of the connection establishment.
  • Step S1212 The eNB sends the request information to the MME by using an initial user equipment message. After receiving the RRC connection setup complete message carrying the NAS PDU, the eNB sends the NAS PDU to the MME through the initial user equipment message.
  • Step S1214 the MME sends an initial context setup request message to the eNB.
  • the MME informs the eNB of the connection information of the user equipment, including the access layer security context information, the handover restriction information, the QoS information, the tunnel terminal identifier and the address information used by the serving gateway for the user plane, and the like.
  • Step S1216 The eNB sends a security mode command message to the user equipment.
  • the eNB sends a security mode command to the user equipment or the MTC device for activating the security of the user equipment, including the used algorithm and the like.
  • Step S1218 The user equipment sends a security mode complete message to the eNB.
  • the user equipment sends a security mode complete message to the eNB, informing the eNB that the security has been activated.
  • Step S1220 The eNB sends an RRC connection reconfiguration message to the user equipment.
  • the eNB sends an RRC connection reconfiguration message to the user equipment, where the DRB and the SRB2 are established for the user equipment. It should be noted that step S1220 can be performed before step S1218.
  • Step S1222 The user equipment sends an RRC connection reconfiguration complete message to the eNB.
  • the user equipment sends an RRC Connection Reconfiguration Complete message to the eNB, informing the eNB that the data radio bearer and the SRB2 configuration are completed.
  • Step S1224 The eNB sends an initial context setup response message to the MME.
  • the eNB sends an initial context setup response message to the MME, where the message carries the tunnel terminal identifier of the eNB and the address information of the eNB for the user plane downlink service of the S1 interface, and the MME is informed to complete the establishment of the context.
  • Step S1226 The user equipment sends a small data processing capability information indication message to the eNB.
  • the UE indicates in its message that it has capability information using the optimized small data processing method, and informs the eNB of the small data processing method information supported by the UE in the form of a bitmap.
  • the new small data processing capability information indication message includes an RRC processing identifier field and a small data processing capability field; of course, non-critical extension fields and the like may also be included as needed.
  • the small data processing capability field may further include a capability information field and/or a small data processing method information field using the optimized small data processing method. As shown in FIG.
  • Step S1228 The eNB sends a small data processing capability information feedback message to the user equipment.
  • the eNB indicates in its message that it has capability information using the optimized small data processing method, and informs the UE of the small data processing method information supported by the eNB in the form of a bitmap.
  • the new small data processing capability information feedback message includes an RRC processing identifier field and a small data processing capability field; of course, it may also include Non-critical extension fields, etc.
  • the small data processing capability field may also include a capability information field and/or a small data processing method information field using an optimized small data processing method. As shown in FIG.
  • step S1226 and step S1228 may be performed any time after step S1210.
  • FIG. 13 is a flowchart of performing small data processing capability information exchange between a user equipment and an access network device according to a preferred embodiment 7 of the present invention. As shown in FIG. 13, the method includes the following steps. S1302 to step
  • Step S1302 The user equipment sends a random access preamble sequence to the eNB.
  • the user equipment When the user equipment has data or signaling to send, first select a preamble sequence, and send a preamble sequence to the eNB according to the random access resource information configured by the system.
  • Step S1304 The eNB sends a random access response message (Msg2) to the user equipment.
  • the random access response message may include a preamble sequence identifier corresponding to the random access preamble sequence sent by the user equipment, an uplink transmission timing adjustment, an uplink resource allocated for the RRC connection request message, a temporary C-RNTI, and the like.
  • Step S1306 The user equipment sends an RRC connection request to the eNB.
  • the user equipment After receiving the Msg2, the user equipment sends an RRC connection setup request message by using the uplink resource allocated in the random access response message.
  • Step S1308 The eNB sends an RRC connection setup message to the user equipment.
  • the eNB sends an RRC connection setup message to the user equipment, is used to establish SRB1, and allocates an uplink resource for the RRC connection setup complete message to the user equipment.
  • Step S1310 The user equipment sends an RRC connection setup complete message to the eNB.
  • the user equipment informs the network side that the SRB1 is successfully established, and sends a small data processing capability indication message to the network side in the NAS PDU, indicating that it has the capability information using the optimized small data processing method and the small data processing method information supported by the UE.
  • the small data processing capability indication message includes a small data processing capability information field, and may also include fields such as a Globally Unique Temporary Identity (GUTI) and a Protocol Configuration Options (PCO).
  • GUI Globally Unique Temporary Identity
  • PCO Protocol Configuration Options
  • the UE supports two types of small data transmission schemes 2 and 3, and the corresponding M2 and B M3 bit positions in FIG. 15 are "1", and the remaining bit positions are "0".
  • Step S1312 The eNB sends a small data processing capability feedback message to the MME by using an initial user equipment message.
  • the eNB receives, from the UE, a small data processing capability feedback message carrying the capability information indicating that it has the optimized small data processing method and the small data transmission method information supported by the UE, and sends the message to the MME through the initial user equipment message.
  • the small data processing capability feedback message includes a small data processing capability information field, and may also include fields such as GUTI, PCO, and the like.
  • the MME supports all small data transmission schemes, and after the MME knows the small data transmission scheme supported by the UE, the MME uses the scheme 2 and/or the scheme 3 to transmit the small data in the subsequent small data transmission process. Step S1314, the MME sends an initial context setup request message to the eNB.
  • the MME carries the capability information indicating that it has the optimized small data processing method and the small data transmission method information supported by the UE in the small data processing capability feedback message.
  • the small data processing capability feedback message is sent to the UE through the initial context setup request message.
  • the MME supports a total of eight small data transmission schemes, and the corresponding M1 to M8 bits are all set to "1".
  • Step S 1316 the eNB sends an RRC connection reconfiguration message to the UE.
  • the eNB sends, to the UE, the capability information indicating that it has the optimized small data processing method and the small data transmission method information supported by the UE, which are carried in the small data processing capability feedback message, by the RRC connection reconfiguration message.
  • FIG. 14 is a flowchart of the small data processing capability information exchange performed by the user equipment and the target base station according to the preferred embodiment 8 of the present invention. As shown in FIG. 14, the following steps S1402 to S1414 are included. Step S1402: The user equipment sends a measurement report to the source eNB. When the user equipment meets the configured reporting measurement condition, the measurement result is reported to the source eNB.
  • Step S1404 The source eNB sends a handover request message to the target eNB. After receiving the measurement result reported by the UE, the source eNB decides to switch the UE according to the radio resource management information, and the source eNB initiates a handover request to the target eNB.
  • Step S1406 The target eNB sends a handover request acknowledgement message to the source eNB. After receiving the handover request of the source eNB, the target eNB determines whether the UE can access according to the access permission control condition. In the preferred embodiment, the target eNB allows the UE to access, and sends a dedicated random access preamble to the UE in the message.
  • the target eNB transmits a handover request acknowledgement message to the source eNB, such as the sequence and the target eNB security algorithm information.
  • the target eNB carries the capability information indicating that it has the optimized small data processing method and the small data transmission method information supported by the UE in the handover request acknowledgement message.
  • the target eNB supports a total of eight small data transmission schemes, and the corresponding M1 is
  • Step S1408 The source eNB sends an RRC connection reconfiguration message to the UE.
  • the source eNB sends the information obtained in the handover request acknowledgement message received by the target eNB to the UE through the RRC connection reconfiguration message, and the information is used by the UE for the subsequent operation process.
  • the source eNB sends, by using the RRC connection reconfiguration message, the capability information carried in the handover request acknowledgement message indicating that it has the optimized small data processing method and the small data transmission method information supported by the UE to the UE.
  • the UE supports two types of small data transmission schemes 2 and 3.
  • Step S1410 The user equipment sends a random access preamble sequence to the target eNB.
  • the user equipment sends a random access preamble sequence to the target eNB, the sequence being provided by the target eNB.
  • Step S1412 The target eNB sends a random access response message to the UE.
  • the random access response message may include a preamble sequence identifier corresponding to the random access preamble sequence sent by the user equipment, an uplink transmission timing adjustment, an uplink resource allocated for the RRC connection request message, a temporary C-RNTI, and the like.
  • Step S1414 the UE sends an RRC Connection Reconfiguration Complete message to the target eNB.
  • the UE sends the capability information using the optimized small data processing method and the small data transmission method information supported by the UE to the target eNB through the RRC connection reconfiguration complete message.
  • the UE has capability information using an optimized small data processing method, and the UE supports two small data transmission schemes 2 and 3, and the corresponding M2 and M3 bit positions in FIG. 15 are "1", and the remaining bits. Position "0".
  • the target eNB supports all small data transmission schemes. After the target eNB learns the small data transmission scheme supported by the UE, it uses the scheme 2 and/or scheme 3 to transmit the small data in the subsequent small data transmission.
  • the user equipment sends the data processing capability information of the user equipment to the network device, so that the network device learns the method for transmitting the small data that the user equipment can adopt to determine the transmission between the two devices.
  • the same network device can also send data processing capability information of the network device to the user equipment, ensuring that the user equipment and the network device have the same knowledge in small data processing capability, and finally make selection
  • the small data processing solution gives full play to its advantages, reduces the abnormal situation caused by the mismatch of network equipment and user equipment, and finally reduces the signaling overhead caused by small data transmission, optimizes network performance, and improves system efficiency.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
  • the technical solution provided by the embodiments of the present invention can be applied to the field of communications, where a user equipment sends its own data processing capability information to a network device, so that the network device knows a method for transmitting small data that can be used by the user equipment to determine the two. Which method can be used to transmit small data, the same network device can also send its own data processing capability information to the user equipment, ensuring that the user equipment and the network device have the same knowledge in small data processing capabilities, so that the selected small data
  • the processing solution gives full play to the advantages and reduces the abnormal situation caused by the mismatch between the network device and the user equipment.

Abstract

本发明公开了一种数据传输方法、装置及系统,该方法包括:用户设备向网络设备发送用户设备的数据处理能力信息;用户设备通过网络设备确定的传输小数据的方法与网络设备进行小数据传输,其中,传输小数据的方法是网络设备根据数据处理能力信息确定的。通过本发明,用户设备向网络设备发送自身的数据处理能力信息,使得网络设备获知用户设备能够采用的传输小数据的方法,以确定二者之间传输小数据时可以使用哪种方法,同样的网络设备也可向用户设备发送自身的数据处理能力信息,保证用户设备与网络设备在小数据处理能力上具有相同认知,使得选择的小数据处理方案充分发挥优势,减少网络设备与用户设备因能力不匹配引起的异常情况。

Description

数据传输方法、 装置及系统
技术领域 本发明涉及通信领域, 具体而言, 涉及一种数据传输方法、 装置及系统。 背景技术 目前, 在许多用户设备 (User Equipment, 简称为 UE) 的应用场景中, UE发送 或接收的数据量并不是很大(通常为几十到几百字节), 只占用较少的物理资源便可完 成一次数据的传输, 例如智能家居类业务、 背景类业务等。 按照现有协议标准, 即使 传输的数据量很小但仍需建立完整的信令流程, 在进行数据传输时产生的信令开销与 数据传输量相比非常大, 严重降低了系统效率, 因此对小数据传输特性进行研究势在 必行。 目前小数据的研究主要集中在如何减小因数据传递而产生的控制面 (Control Plane, 简称为 CP) 信令的开销。 针对上述减小因数据传递而产生的控制面信令开销的问题, 目前已经提出的方案 主要有使用控制面信令携带小数据, 利用短消息业务发送小数据以及快速建立连接等 几种方案。 考虑到网络和用户设备版本的差异, 或者运营商的策略差异, 网络和用户 设备在是否支持优化的小数据(small data)传输方法、 或者支持哪种优化的 small data 传输方法上可能存在不同,这会导致用户设备和网络之间传输 small data的失败,甚至 会造成异常情况反而增加网络处理的复杂度。 针对相关技术中, 网络设备与用户设备之间关于小数据处理能力可能不匹配, 导 致不能充分利用小数据传输的优化方案, 甚至增加网络处理复杂度的问题, 目前尚未 提出有效的解决方案。 发明内容 本发明实施例提供了一种数据传输方法、 装置及系统, 以至少解决相关技术中, 网络设备与用户设备之间关于小数据处理能力可能不匹配, 导致不能充分利用小数据 传输的优化方案, 甚至增加网络处理复杂度的问题。 根据本发明实施例的一个方面, 提供了一种数据传输方法, 包括: 用户设备向网 络设备发送所述用户设备的数据处理能力信息; 所述用户设备通过所述网络设备确定 的传输小数据的方法与所述网络设备进行小数据的传输, 其中, 所述传输小数据的方 法是所述网络设备根据所述数据处理能力信息确定的, 所述小数据的大小处于预定范 围内。 优选地, 所述用户设备通过以下之一的方式向所述网络设备发送所述数据处理能 力信息: 在已有的上行无线资源控制 (Radio Resource Control, 简称为 RRC) 信令中 添加用于指示所述数据处理能力信息的信息单元 (Information Element, 简称为 IE); 添加用于指示所述数据处理能力信息的上行媒体接入控制 (Media Access Control, 简 称为 MAC) 控制单元 (Control Element, 简称为 CE); 在上行非接入层 (Non-Access Stratum, 简称为 NAS)信令中添加所述数据处理能力信息; 使用 RRC消息和 /或 NAS 消息发送所述数据处理能力信息。 优选地, 用户设备向网络设备发送所述用户设备的数据处理能力信息包括: 所述 用户设备在与所述网络设备的连接过程中通过信令交互向所述网络设备发送所述数据 处理能力信息。 优选地, 所述用户设备与所述网络设备的连接过程包括以下之一: RRC连接建立 过程、 移动管理过程、 会话管理过程、 切换过程。 优选地, 所述数据处理能力信息包括以下至少之一: 指示所述用户设备是否支持 所述传输小数据的方法的信息; 指示所述用户设备允许使用的一种或多种传输小数据 的方法的信息。 根据本发明实施例的另一个方面, 提供了一种数据传输方法, 包括: 接入网设备 向用户设备发送所述接入网设备的数据处理能力信息; 所述接入网设备通过所述用户 设备确定的传输小数据的方法与所述用户设备进行小数据的传输, 其中, 所述传输小 数据的方法是所述用户设备根据所述数据处理能力信息确定的, 所述小数据的大小处 于预定范围内。 优选地, 所述接入网设备通过以下之一的方式向所述用户设备发送所述数据处理 能力信息: 在已有的下行 RRC信令中添加用于指示所述数据处理能力信息的 IE; 添 加用于指示所述数据处理能力信息的下行 MAC CE; 在系统消息中添加所述数据处理 能力信息; 使用 RRC消息发送所述数据处理能力信息; 使用追踪区域标识 (Tracking Area Identity, 简称为 TAI) 链表进行所述数据处理能力信息的指示。 优选地, 接入网设备向用户设备发送所述接入网设备的数据处理能力信息包括: 所述接入网设备在与所述用户设备的连接过程中通过信令交互向所述用户设备发送所 述数据处理能力信息。 优选地, 所述接入网设备与所述用户设备的连接过程包括以下之一: RRC连接建 立过程、 系统消息传递过程、 切换过程、 移动管理过程、 会话管理过程。 优选地, 所述数据处理能力信息包括以下至少之一: 指示所述接入网设备是否支 持所述传输小数据的方法的信息; 指示所述接入网设备允许使用的一种或多种传输小 数据的方法的信息。 根据本发明实施例的再一个方面, 提供了一种数据传输方法, 包括: 核心网设备 向用户设备发送所述核心网设备的数据处理能力信息; 所述核心网设备通过所述用户 设备确定的传输小数据的方法与所述用户设备进行小数据的传输, 其中, 所述传输小 数据的方法是所述用户设备根据所述数据处理能力信息确定的, 所述小数据的大小处 于预定范围内。 优选地, 所述核心网设备通过以下之一的方式向所述用户设备发送所述数据处理 能力信息: 在已有的下行非 NAS信令中添加用于指示所述数据处理能力信息的 IE; 使用 TAI链表进行所述数据处理能力信息的指示;使用 NAS消息发送所述数据处理能 力信息。 优选地, 核心网设备向用户设备发送所述核心网设备的数据处理能力信息包括: 所述核心网设备在与所述用户设备的连接过程中通过信令交互向所述用户设备发送所 述数据处理能力信息。 优选地, 所述核心网设备与所述用户设备的连接过程包括以下之一: 移动管理过 程、 会话管理过程。 优选地, 所述数据处理能力信息包括以下至少之一: 指示所述核心网设备是否支 持所述传输小数据的方法的信息; 指示所述核心网设备允许使用的一种或多种传输小 数据的方法的信息。 根据本发明实施例的一个方面, 提供了一种数据传输装置, 应用于用户设备, 包 括: 第一发送模块, 设置为向网络设备发送所述用户设备的数据处理能力信息; 第一 传输模块, 设置为通过所述网络设备确定的传输小数据的方法与所述网络设备进行小 数据的传输, 其中, 所述传输小数据的方法是所述网络设备根据所述数据处理能力信 息确定的, 所述小数据的大小处于预定范围内。 根据本发明实施例的另一个方面,提供了一种数据传输装置,应用于接入网设备, 包括: 第二发送模块, 设置为向用户设备发送所述接入网设备的数据处理能力信息; 第二传输模块, 通过所述用户设备确定的传输小数据的方法与所述用户设备进行小数 据的传输, 其中, 所述传输小数据的方法是所述用户设备根据所述数据处理能力信息 确定的, 所述小数据的大小处于预定范围内。 根据本发明实施例的再一个方面,提供了一种数据传输装置,应用于核心网设备, 包括: 第三发送模块, 设置为向用户设备发送所述核心网设备的数据处理能力信息; 第三传输模块, 设置为通过所述用户设备确定的传输小数据的方法与所述用户设备进 行小数据的传输, 其中, 所述传输小数据的方法是所述用户设备根据所述数据处理能 力信息确定的, 所述小数据的大小处于预定范围内。 根据本发明实施例的又一个方面, 提供了一种数据传输系统, 包括: 用户设备、 接入网设备和核心网设备, 其中, 所述用户设备包括上述应用于用户设备的数据传输 装置, 所述接入网设备包括上述应用于接入网设备的数据传输装置, 所述核心网设备 包括上述应用于核心网设备的数据传输装置。 通过本发明实施例, 用户设备向网络设备发送该用户设备的数据处理能力信息, 使得网络设备获知用户设备能够采用的传输小数据的方法, 以确定二者之间传输小数 据时可以使用哪种方法, 同样的网络设备也可向用户设备发送该网络设备的数据处理 能力信息, 保证了用户设备与网络设备在小数据处理能力上具有相同的认知, 最终使 得选择的小数据处理方案充分发挥优势, 减少网络设备与用户设备因能力不匹配而引 起的异常情况, 最终达到减少因小数据传输产生的信令开销、 实现网络的性能优化、 提升系统效率的目的。 附图说明 此处所说明的附图用来提供对本发明实施例的进一步理解,构成本申请的一部分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在 附图中- 图 1是根据本发明实施例的数据传输方法的流程图一; 图 2是根据本发明实施例的数据传输方法的流程图二; 图 3是根据本发明实施例的数据传输方法的流程图三; 图 4是根据本发明实施例的数据传输装置的结构框图一; 图 5是根据本发明实施例的数据传输装置的结构框图二; 图 6是根据本发明实施例的数据传输装置的结构框图三; 图 7是根据本发明优选实施例一的用户设备与接入网设备间通过已有 RRC信令完 成小数据处理能力信息交互的流程图; 图 8是根据本发明优选实施例二的用户设备与核心网设备间通过 NAS信令完成小 数据处理能力信息交互的流程图; 图 9是根据本发明优选实施例三的用户设备与接入网设备间通过 MAC CE信令完 成小数据处理能力信息的交互的流程图; 图 10 是根据本发明优选实施例四的接入网设备通过系统消息向用户设备指示小 数据处理能力信息的流程图; 图 11是根据本发明优选实施例五的用户设备通过 TAI链表及系统信息得知接入网 设备及核心网设备小数据处理能力信息的流程图; 图 12是根据本发明优选实施例六的用户设备与接入网设备间通过新的 RRC信令 完成小数据处理能力信息交互的流程图; 图 13是根据本发明优选实施例七的用户设备与接入网设备间通过新的 NAS信令 完成小数据处理能力信息交互的流程图; 图 14是根据本发明优选实施例八的用户设备与目标基站通过 RRC信令完成小数 据处理能力信息交互的流程图; 图 15是根据本发明优选实施例的小数据传输方案的位图示意图。 具体实施方式 需要说明的是, 在不冲突的情况下, 本申请中的实施例及实施例中的特征可以相 互组合。 下面将参考附图并结合实施例来详细说明本发明。 相关技术中, 网络设备与用户设备之间关于小数据处理能力可能不匹配, 导致不 能充分利用小数据传输的优化方案, 甚至增加网络处理复杂度。 基于此, 本发明实施 例提供了解决上述技术问题的方法, 即网络设备与用户设备关于各自小数据处理能力 进行交互。 下面分别从用户设备侧和网络设备侧 (接入网设备和核心网设备) 进行描 述。 ( 1 ) 用户设备侧 本发明实施例提供了一种数据传输方法, 图 1是根据本发明实施例的数据传输方 法的流程图一, 如图 1所示, 包括如下的步骤 S102至步骤 S104。 步骤 S102, 用户设备向网络设备发送用户设备的数据处理能力信息。 步骤 S104,用户设备通过网络设备确定的传输小数据的方法与网络设备进行小数 据的传输, 其中, 传输小数据的方法是网络设备根据数据处理能力信息确定的, 小数 据的大小处于预定范围内。 上述实施例中, 用户设备向网络设备发送该用户设备的数据处理能力信息, 使得 网络设备获知用户设备能够采用的传输小数据的方法, 以确定二者之间传输小数据时 可以使用哪种方法,保证了用户设备与网络设备在小数据处理能力上具有相同的认知, 使得选择的小数据处理方案充分发挥优势, 减少网络设备与用户设备因能力不匹配而 引起的异常情况,最终达到减少因小数据传输产生的信令开销、实现网络的性能优化、 提升系统效率的目的。 关于小数据的一个例子是, 几十到几百字节的数据可以称为小 数据。 需要说明的是, 上述用户设备具有小数据传输特性, 上述传输小数据的方法可以 是使用控制面信令携带小数据、 利用短消息业务发送小数据、 快速建立连接等。 上述 这些传输小数据的方法 (也可以称为小数据处理方法) 均是目前针对小数据传输提出 的优化方案, 可以节省小数据传输产生的信令开销。 当然, 本发明实施例的方法也适 用于针对小数据传输的其它方案。 从网络设备侧进行描述的方案中的传输小数据的方 法也如此, 后续不再赘述。 优选地, 上述数据处理能力信息包括以下至少之一: 指示用户设备是否支持传输 小数据的方法的信息(即用户设备是否支持使用优化的小数据处理方法); 指示用户设 备允许使用的一种或多种传输小数据的方法的信息 (即用户设备能够使用哪几种优化 的小数据处理方法)。上述数据处理能力信息可用于辅助网络设备确定发送或接收小数 据时所使用的处理方法。 步骤 S102 中用户设备可以通过以下之一的方式向网络设备发送数据处理能力信 息: 在已有的上行 RRC信令中添加用于指示数据处理能力信息的 IE; 添加用于指示 数据处理能力信息的上行 MAC CE;在上行 NAS信令中添加数据处理能力信息;使用 RRC消息和 /或 NAS消息发送数据处理能力信息。需要说明的是, RRC消息和 /或 NAS 消息可以是新定义的, 专门用于传递数据处理能力信息。 在一个优选实施例中, 用户设备向网络设备发送用户设备的数据处理能力信息包 括: 用户设备在与网络设备的连接过程中通过信令交互向网络设备发送数据处理能力 信息。 较优地, 用户设备与网络设备的连接过程包括以下之一: RRC连接建立过程、 移动管理过程、 会话管理过程、 切换过程。
(2) 接入网设备侧 本发明实施例还提供了一种数据传输方法, 图 2是根据本发明实施例的数据传输 方法的流程图二, 如图 2所示, 包括如下的步骤 S202至步骤 S204。 步骤 S202, 接入网设备向用户设备发送接入网设备的数据处理能力信息。 步骤 S204,接入网设备通过用户设备确定的传输小数据的方法与用户设备进行小 数据的传输, 其中, 传输小数据的方法是用户设备根据数据处理能力信息确定的, 小 数据的大小处于预定范围内。 上述实施例中, 接入网设备向用户设备发送该接入网设备的数据处理能力信息, 使得用户设备获知接入网设备能够采用的传输小数据的方法, 以确定二者之间传输小 数据时可以使用哪种方法, 保证了用户设备与网络设备在小数据处理能力上具有相同 的认知, 最终使得选择的小数据处理方案充分发挥优势, 减少网络设备与用户设备因 能力不匹配而引起的异常情况, 最终达到减少因小数据传输产生的信令开销、 实现网 络的性能优化、 提升系统效率的目的。 关于小数据的一个例子是, 几十到几百字节的 数据可以称为小数据。 优选地, 上述数据处理能力信息包括以下至少之一: 指示接入网设备是否支持传 输小数据的方法的信息(即接入网设备是否支持使用优化的小数据处理方法); 指示接 入网设备允许使用的一种或多种传输小数据的方法的信息 (即接入设备能够使用哪几 种优化的小数据处理方法)。上述数据处理能力信息可用于辅助用户设备确定发送或接 收小数据时所使用的处理方法。 步骤 S202 中接入网设备可以通过以下之一的方式向用户设备发送数据处理能力 信息: 在已有的下行 RRC信令中添加用于指示数据处理能力信息的 IE; 添加用于指 示数据处理能力信息的下行 MAC CE;在系统消息中添加数据处理能力信息;使用 RRC 消息发送数据处理能力信息; 使用 TAI链表进行数据处理能力信息的指示。 需要说明 的是, RRC消息可以是新定义的, 专门用于传递数据处理能力信息。 在一个优选实施例中, 接入网设备向用户设备发送接入网设备的数据处理能力信 息包括: 接入网设备在与用户设备的连接过程中通过信令交互向用户设备发送数据处 理能力信息。 较优地, 接入网设备与用户设备的连接过程包括以下之一: RRC连接建 立过程、 系统消息传递过程、 切换过程、 移动管理过程、 会话管理过程。
(3 ) 核心网设备侧 本发明实施例提供了一种数据传输方法, 图 3是根据本发明实施例的数据传输方 法的流程图三, 如图 3所示, 包括如下的步骤 S302至步骤 S304。 步骤 S302, 核心网设备向用户设备发送核心网设备的数据处理能力信息。 步骤 S304,核心网设备通过用户设备确定的传输小数据的方法与用户设备进行小 数据的传输, 其中, 传输小数据的方法是用户设备根据数据处理能力信息确定的, 小 数据的大小处于预定范围内。 上述实施例中, 核心网设备向用户设备发送该核心网设备的数据处理能力信息, 使得用户设备获知核心网设备能够采用的传输小数据的方法, 以确定二者之间传输小 数据时可以使用哪种方法, 保证了用户设备与网络设备在小数据处理能力上具有相同 的认知, 最终使得选择的小数据处理方案充分发挥优势, 减少网络设备与用户设备因 能力不匹配而引起的异常情况, 最终达到减少因小数据传输产生的信令开销、 实现网 络的性能优化、 提升系统效率的目的。 优选地, 上述数据处理能力信息包括以下至少之一: 指示核心网设备是否支持传 输小数据的方法的信息(即核心网设备是否支持使用优化的小数据处理方法); 指示核 心网设备允许使用的一种或多种传输小数据的方法的信息 (即核心设备能够使用哪几 种优化的小数据处理方法)。上述数据处理能力信息可用于辅助用户设备确定发送或接 收小数据时所使用的处理方法。 步骤 S302 中核心网设备可以通过以下之一的方式向用户设备发送数据处理能力 信息: 在已有的下行非 NAS信令中添加用于指示数据处理能力信息的 IE; 使用 TAI 链表进行数据处理能力信息的指示; 使用 NAS消息发送数据处理能力信息。需要说明 的是, NAS消息可以是新定义的, 专门用于传递数据处理能力信息。 在一个优选实施例中, 核心网设备向用户设备发送核心网设备的数据处理能力信 息包括: 核心网设备在与用户设备的连接过程中通过信令交互向用户设备发送数据处 理能力信息。 较优地, 核心网设备与用户设备的连接过程包括以下之一: 移动管理过 程、 会话管理过程。 下面分别描述用于实现上述方法所对应的装置。 本发明实施例还提供了一种数据传输装置, 应用于用户设备, 该装置可以用于实 现上述图 1所示实施例及其优选实施例的数据传输方法。 图 4是根据本发明实施例的 数据传输装置的结构框图一, 如图 4所示, 该装置包括第一发送模块 42和第一传输模 块 44。 下面对其结构进行详细描述。 第一发送模块 42, 设置为向网络设备发送用户设备的数据处理能力信息; 第一传 输模块 44,耦合至第一发送模块 42, 设置为通过网络设备确定的传输小数据的方法与 网络设备进行小数据的传输, 其中, 传输小数据的方法是网络设备根据数据处理能力 信息确定的, 小数据的大小处于预定范围内。 上述实施例中, 第一发送模块 42 向网络设备发送该用户设备的数据处理能力信 息, 使得网络设备获知用户设备能够采用的传输小数据的方法, 以确定二者之间传输 小数据时可以使用哪种方法, 保证了用户设备与网络设备在小数据处理能力上具有相 同的认知, 使得选择的小数据处理方案充分发挥优势, 减少网络设备与用户设备因能 力不匹配而引起的异常情况, 最终达到减少因小数据传输产生的信令开销、 实现网络 的性能优化、 提升系统效率的目的。 关于小数据的一个例子是, 几十到几百字节的数 据可以称为小数据。 优选地, 上述数据处理能力信息包括以下至少之一: 指示用户设备是否支持传输 小数据的方法的信息(即用户设备是否支持使用优化的小数据处理方法); 指示用户设 备允许使用的一种或多种传输小数据的方法的信息 (即用户设备能够使用哪几种优化 的小数据处理方法)。上述数据处理能力信息可用于辅助网络设备确定发送或接收小数 据时所使用的处理方法。 第一发送模块 42可以通过以下之一的方式向网络设备发送数据处理能力信息:在 已有的上行 RRC信令中添加用于指示数据处理能力信息的 IE; 添加用于指示数据处 理能力信息的上行 MAC CE; 在上行 NAS信令中添加数据处理能力信息; 使用 RRC 消息和 /或 NAS消息发送数据处理能力信息。 需要说明的是, RRC消息和 /或 NAS消 息可以是新定义的, 专门用于传递数据处理能力信息。 在一个优选实施例中,第一发送模块 42向网络设备发送用户设备的数据处理能力 信息包括: 在用户设备与网络设备的连接过程中通过信令交互向网络设备发送数据处 理能力信息。 较优地, 用户设备与网络设备的连接过程包括以下之一: RRC连接建立 过程、 移动管理过程、 会话管理过程、 切换过程。 本发明实施例还提供了一种数据传输装置, 应用于接入网设备, 该装置可以用于 实现上述图 2所示实施例及其优选实施例的数据传输方法。 图 5是根据本发明实施例 的数据传输装置的结构框图二, 如图 5所示, 该装置包括。 下面对其结构进行详细描 述。 第二发送模块 52, 设置为向用户设备发送接入网设备的数据处理能力信息; 第二 传输模块 54,耦合至第二发送模块 52,通过用户设备确定的传输小数据的方法与用户 设备进行小数据的传输, 其中, 传输小数据的方法是用户设备根据数据处理能力信息 确定的, 小数据的大小处于预定范围内。 上述实施例中,第二发送模块 52向用户设备发送该接入网设备的数据处理能力信 息, 使得用户设备获知接入网设备能够采用的传输小数据的方法, 以确定二者之间传 输小数据时可以使用哪种方法, 保证了用户设备与网络设备在小数据处理能力上具有 相同的认知, 最终使得选择的小数据处理方案充分发挥优势, 减少网络设备与用户设 备因能力不匹配而引起的异常情况, 最终达到减少因小数据传输产生的信令开销、 实 现网络的性能优化、 提升系统效率的目的。 关于小数据的一个例子是, 几十到几百字 节的数据可以称为小数据。 优选地, 上述数据处理能力信息包括以下至少之一: 指示接入网设备是否支持传 输小数据的方法的信息(即接入网设备是否支持使用优化的小数据处理方法); 指示接 入网设备允许使用的一种或多种传输小数据的方法的信息 (即接入设备能够使用哪几 种优化的小数据处理方法)。上述数据处理能力信息可用于辅助用户设备确定发送或接 收小数据时所使用的处理方法。 第二发送模块 52可以通过以下之一的方式向用户设备发送数据处理能力信息:在 已有的下行 RRC信令中添加用于指示数据处理能力信息的 IE; 添加用于指示数据处 理能力信息的下行 MAC CE;在系统消息中添加数据处理能力信息;使用 RRC消息发 送数据处理能力信息; 使用 TAI链表进行数据处理能力信息的指示。 需要说明的是, RRC消息可以是新定义的, 专门用于传递数据处理能力信息。 在一个优选实施例中,第二发送模块 52向用户设备发送接入网设备的数据处理能 力信息包括: 在接入网设备与用户设备的连接过程中通过信令交互向用户设备发送数 据处理能力信息。 较优地, 用户设备与接入网设备的连接过程包括以下之一: RRC连 接建立过程、 系统消息传递过程、 切换过程、 移动管理过程、 会话管理过程。 本发明实施例还提供了一种数据传输装置, 应用于核心网设备, 该装置可以用于 实现上述图 3所示实施例及其优选实施例的数据传输方法。 图 6是根据本发明实施例 的数据传输装置的结构框图三, 如图 6所示, 该装置包括。 下面对其结构进行详细描 述。 第三发送模块 62, 设置为向用户设备发送核心网设备的数据处理能力信息; 第三 传输模块 64,耦合至第三发送模块 62, 设置为通过用户设备确定的传输小数据的方法 与用户设备进行小数据的传输, 其中, 传输小数据的方法是用户设备根据数据处理能 力信息确定的, 小数据的大小处于预定范围内。 上述实施例中,第三发送模块 62向用户设备发送该核心网设备的数据处理能力信 息, 使得用户设备获知核心网设备能够采用的传输小数据的方法, 以确定二者之间传 输小数据时可以使用哪种方法, 保证了用户设备与网络设备在小数据处理能力上具有 相同的认知, 最终使得选择的小数据处理方案充分发挥优势, 减少网络设备与用户设 备因能力不匹配而引起的异常情况, 最终达到减少因小数据传输产生的信令开销、 实 现网络的性能优化、 提升系统效率的目的。 优选地, 上述数据处理能力信息包括以下至少之一: 指示核心网设备是否支持传 输小数据的方法的信息(即核心网设备是否支持使用优化的小数据处理方法); 指示核 心网设备允许使用的一种或多种传输小数据的方法的信息 (即核心设备能够使用哪几 种优化的小数据处理方法)。上述数据处理能力信息可用于辅助用户设备确定发送或接 收小数据时所使用的处理方法。 第三发送模块 62可以通过以下之一的方式向用户设备发送数据处理能力信息:在 已有的下行非 NAS信令中添加用于指示数据处理能力信息的 IE; 使用 TAI链表进行 数据处理能力信息的指示; 使用 NAS 消息发送数据处理能力信息。 需要说明的是, NAS消息可以是新定义的, 专门用于传递数据处理能力信息。 在一个优选实施例中,第三发送模块 62向用户设备发送核心网设备的数据处理能 力信息包括: 在核心网设备与用户设备的连接过程中通过信令交互向用户设备发送数 据处理能力信息。 较优地, 用户设备与核心网设备的连接过程包括以下之一: 移动管 理过程、 会话管理过程。 本发明实施例还提供了一种数据传输系统, 该系统包括: 用户设备、 接入网设备 和核心网设备, 其中, 用户设备包括上述应用于用户设备的数据传输装置, 接入网设 备包括上述应用于接入网设备的数据传输装置, 核心网设备包括上述应用于核心网设 备的数据传输装置。 上述各个装置的结构及其对应的功能已经详细描述, 此处不再赘 述。 需要说明的是, 上述数据传输装置和系统对应于上述数据传输方法, 其具体的实 现过程在方法实施例中已经进行过详细说明, 在此不再赘述。 为了使本发明的技术方案和实现方法更加清楚, 下面将结合优选的实施例对其实 现过程进行详细描述。 以下优选实施例中将上述数据处理能力信息称为小数据处理能 力信息。 优选实施例一 图 7是根据本发明优选实施例一的用户设备与接入网设备间通过已有 RRC信令完 成小数据处理能力信息交互的流程图,如图 7所示,包括如下的步骤 S702至步骤 S724。 步骤 S702, 用户设备向演进的节点 B (Evolved NodeB, 简称为 eNB) 发送随机 接入前导序列。 当用户设备有数据或信令需要发送时, 首先选择一个前导序列 (Preamble), 并根 据系统配置的随机接入资源信息向 eNB发送前导序列。 步骤 S704, eNB向用户设备发送随机接入响应消息 (Msg2)。 本优选实施例中的随机接入响应消息可以包括与用户设备发送的随机接入前导序 列对应的前导序列标识、上行传输定时调整、 为 RRC连接请求消息分配上行资源、 小 区无线网络临时标识 (Cell-Radio Network Temporary Identity, 简称为 C-RNTI) 等。 步骤 S706, 用户设备向 eNB发送 RRC连接请求。 用户设备在收到 Msg2后, 利用在随机接入响应消息中分配的上行资源发送 RRC 连接建立请求消息, 请求建立 RRC连接。 步骤 S708, eNB向用户设备发送 RRC连接建立消息。 eNB 向用户设备发送 RRC连接建立消息, 用于建立信令无线承载 1 ( Signaling Radio Bearer 1 , 简称为 SRB1 ), 并为用户设备分配用于 RRC连接建立完成消息的上 行资源。 步骤 S710, 用户设备向 eNB发送 RRC连接建立完成消息。 用户设备告知网络侧 SRB1建立成功, 并依据此次连接建立的目的向网络侧发送 请求信息。 步骤 S712, eNB利用初始用户设备消息向移动性管理实体 (Mobile Management Entity, 简称为 MME) 发送请求信息。 eNB从 UE收到携带有 NAS协议数据单元 (Protocol Data Unit, 简称为 PDU) 的 RRC连接建立完成消息后, 将其中的 NAS PDU通过初始用户设备消息发送给 MME。 步骤 S714, MME向 eNB发送初始上下文建立请求消息。
MME将对应用户设备的连接信息告知 eNB, 包括接入层安全上下文信息、 切换 限制信息、 服务质量(Quality of Service, 简称为 QoS)信息、 服务网关用于用户面的 隧道终端标识和地址信息等。 步骤 S716, eNB向用户设备发送安全模式命令消息。 eNB向用户设备或机器类型通信 (Machine Type Communication, 简称为 MTC) 设备发送安全模式命令, 用于激活用户设备的安全性, 包括使用的算法等内容。 步骤 S718, 用户设备向 eNB发送安全模式完成消息。 用户设备向 eNB发送安全模式完成消息, 告知 eNB安全性已经激活。 步骤 S720, eNB向用户设备发送 RRC连接重配置消息。 eNB 向用户设备发送 RRC连接重配置消息, 用于为用户设备建立数据无线承载 (Data Radio Bearer, 简称为 DRB) 以及信令无线承载 2 ( Signaling Radio Bearer 2, 简称为 SRB2)。 eNB可以使用任一下行 RRC信令向用户设备发送小数据处理能力信息 IE, 本优 选实施例中使用 RRC连接重配置消息进行传递, eNB在此消息中指示了其具有使用优 化的小数据处理方法的能力信息, 并通过位图 (bitmap) 的形式将 eNB支持的小数据 处理方法信息告知 UE。 如图 15所示, 其中 M8至 Ml表示 eNB是否支持小数据传输方案 8至方案 1对 应的传输方法, 将 bit位置 "1"表示 eNB支持该小数据传输方案, bit位置" 0"表示 eNB 不支持该小数据传输方案。 本优选实施例中, eNB支持小数据传输方案 1、 2、 3、 4共四种, 则将对应的 Ml 至 M4比特位置" 1", 其余比特位置 "0"。 UE支持小数据传输方案 1和 4共二种, UE 得知 eNB 的小数据传输方案后, 则在后续的小数据传输过程使用方案 1和 /或方案 4 传输小数据。 需要说明的是, 步骤 S720可在步骤 S718之前进行。 步骤 S722, 用户设备向 eNB发送 RRC连接重配置完成消息。 用户设备向 eNB发送 RRC连接重配置完成消息, 告知 eNB数据无线承载以及 SRB2配置完成。 用户设备可以使用任一上行 RRC消息向网络设备发送小数据处理能力消息的 IE, 本优选实施例中使用 RRC连接重配置完成消息进行传递, UE在此消息中指示了其具 有使用优化的小数据处理方法的能力信息, 并通过 bitmap的形式将 UE支持的小数据 处理方法信息告知 eNB。 如图 15所示, 其中 M8至 Ml表示 eNB是否支持的小数据传输方案 8至方案 1 对应的传输方法,将 bit位置" 1"表示 eNB支持该小数据传输方案, bit位置" 0"表示 eNB 不支持该小数据传输方案。 本优选实施例中, UE支持小数据传输方案 1和 4共二种, 则将对应的 Ml和 M4 比特位置" 1", 其余比特位置 "0"。 eNB得知 UE支持的小数据传输方案后, 在后续的 小数据传输过程中使用方案 1和 /或方案 4传输小数据。 步骤 S724, eNB向 MME发送初始上下文建立响应消息。 eNB向 MME发送初始上下文建立响应消息,该消息中携带 eNB的隧道终端标识 和 eNB用于 S1接口用户面下行业务的地址信息等, 告知 MME完成上下文的建立。 优选实施例二 图 8是根据本发明优选实施例二的用户设备与核心网设备间通过 NAS信令完成小 数据处理能力信息交互的流程图, 如图 8所示, 包括如下的步骤 S802至步骤 S816。 步骤 S802, 用户设备向 eNB发送随机接入前导序列。 当用户设备或 MTC设备有数据需要发送时, 首先选择一个前导序列(Preamble), 并根据系统配置的随机接入资源信息向 eNB发送前导序列。 步骤 S804, eNB向用户设备发送随机接入响应消息 (Msg2)。 随机接入响应消息可能包括与用户设备发送的随机接入前导序列对应的前导序列 标识、 上行传输定时调整、 为 RRC连接请求消息分配上行资源、 临时 C-RNTI等。 步骤 S806, 用户设备向 eNB发送 RRC连接请求。 用户设备在收到 Msg2后, 利用在随机接入响应消息中分配的上行资源发送 RRC 连接建立请求消息, 请求建立 RRC连接。 步骤 S808, eNB向用户设备发送 RRC连接建立消息。 eNB向用户设备发送 RRC连接建立消息, 用于建立 SRB1, 并为用户设备分配用 于 RRC连接建立完成消息的上行资源。 步骤 S810, 用户设备向 eNB发送 RRC连接建立完成消息。 用户设备告知网络侧 SRB1建立成功, 并依据此次连接建立的目的向网络侧发送 附着请求信息, 并在附着请求消息中指示其具有使用优化的小数据处理方法的能力信 息和 UE所支持的小数据处理方法信息。 用户设备可以使用任一上行 NAS信令向 MME发送小数据处理能力信息的 IE,本 优选实施例中使用附着请求消息进行传递。 本优选实施例中, UE支持小数据传输方案 2和 3共二种, 则将图 15 中对应的 M2禾 B M3比特位置" 1", 其余比特位置 "0"。 步骤 S812, eNB利用初始用户设备消息向 MME发送附着请求 (Attach Request) 信息。 eNB从 UE收到携带有指示其具有使用优化的小数据处理方法的能力信息和 UE 所支持的小数据传输方法信息的附着请求消息, 并将该消息通过初始用户设备消息发 送给 MMEo 本优选实施例中, MME支持全部小数据发送方案、 则 MME得知 UE支持的小数 据传输方案后, 在后续的小数据传输过程中使用方案 2和 /或方案 3传输小数据。 步骤 S814, MME向 eNB发送初始上下文建立请求消息。
MME在附着接受(Attach Accept)消息中携带有指示其具有使用优化的小数据处 理方法的能力信息和 UE所支持的小数据传输方法信息。 通过初始上下文建立请求消 息将附着接受消息发送给 UE。 MME可以使用任一下行 NAS信令向用户设备发送小数据处理能力信息 IE,本优 选实施例中使用附着接受消息进行传递。 本优选实施例中, MME支持全部小数据发送方案共八种, 则将对应的 Ml至 M8 比特位均置" 1"。 步骤 S816, eNB向 UE发送 RRC连接重配置消息。 eNB通过 RRC连接重配置消息将在附着接受(Attach Accept)消息中携带的指示 其具有使用优化的小数据处理方法的能力信息和 UE所支持的小数据传输方法信息发 送给 UE。 UE从附着接受消息中得知 MME关于小数据的处理情况。 本优选实施例中, UE支持小数据传输方案 2和 3共二种, UE得知 eNB的小数据 传输方案后, 则在后续的小数据传输过程使用方案 2和 /或方案 3传输小数据。 优选实施例三 图 9是根据本发明优选实施例三的用户设备与接入网设备间通过 MAC CE信令完 成小数据处理能力信息的交互的流程图, 如图 9所示, 包括如下的步骤 S902至步骤 S924。 步骤 S902, 用户设备向 eNB发送随机接入前导序列。 当用户设备有数据或信令需要发送时, 首先选择一个前导序列 (Preamble), 并根 据系统配置的随机接入资源信息向 eNB发送前导序列。 步骤 S904, eNB向用户设备发送随机接入响应消息 (Msg2)。 本优选实施例中的随机接入响应消息可以包括与用户设备发送的随机接入前导序 列对应的前导序列标识、上行传输定时调整、 为 RRC连接请求消息分配上行资源、 临 时 C-RNTI等。 步骤 S906, 用户设备向 eNB发送 RRC连接请求。 用户设备在收到 Msg2后, 利用在随机接入响应消息中分配的上行资源发送 RRC 连接建立请求消息, 请求建立 RRC连接。 步骤 S908, eNB向用户设备发送 RRC连接建立消息。 eNB向用户设备发送 RRC连接建立消息, 用于建立 SRB1, 并为用户设备分配用 于 RRC连接建立完成消息的上行资源, 同时 eNB利用 MAC CE向 UE指示 eNB支持 优化的小数据处理方法的能力信息和 eNB能够使用的小数据处理方法信息。 eNB可以在任一下行 RRC信令或数据传递时使用 MAC CE向用户设备发送小数 据处理能力信息 IE,本优选实施例中在 RRC连接重配置消息进行传递时使用 MAC CE 向用户设备传递相关信息。 本优选实施例中定义 eNB支持优化的小数据处理方法的能力信息以及 eNB能够 使用的小数据处理方法信息 MAC CE对应的逻辑信道标识 (Logical Channel Identity, 简称为 LCID) 如表 1所示的下行链路共享信道 LCID表。 表 1
Figure imgf000019_0001
即在保留序号中划出两个序号, 一个序号 (01011 ) 用于定义 eNB支持优化的小 数据处理方法的能力信息, 一个序号 (01100) 用于定义 eNB能够使用的优化的小数 据处理方法信息。 接收端读取到该 LCID后, 即可知道对应的 MAC PDU中有 eNB支 持小数据传输能力以及 eNB支持的小数据传输方案信息, 然后即可读取该 MAC CE 中的数据。 本优选实施例中, 将 eNB支持优化的小数据处理方法的能力信息取值置" 1"指示 eNB支持优化的小数据处理, 将图 15中用于定义 eNB支持的小数据传输方案对应的 bit位全部置 "1", 表示该 eNB支持全部的小数据传输方案。 本优选实施例中, UE支持小数据传输方案 7和 8共二种, UE得知 eNB支持的小 数据传输方案后, 在后续的小数据传输过程中使用方案 7和 /或方案 8传输小数据。 步骤 S910, 用户设备向 eNB发送 RRC连接建立完成消息。 用户设备告知网络侧 SRB1建立成功, 并依据此次连接建立的目的向网络侧发送 请求信息。 本优选实施例中 UE同时利用 MAC CE向 eNB指示 UE支持优化的小数据处理方 法的能力信息以及 UE支持的小数据处理方法信息。 UE可以在任一上行 RRC信令或 数据传递时使用 MAC CE向 eNB发送小数据处理能力 IE,本优选实施例中在 RRC连 接建立完成消息传递时使用 MAC CE向 eNB传递相关信息。 本优选实施例中定义 UE支持优化的小数据处理方法的能力信息以及 UE支持的 小数据处理方法信息 MAC CE对应的 LCID如表 2所示的上行链路共享信道 LCID表。 表 2
Figure imgf000020_0001
即在保留序号中划出两个序号, 一个序号 (01011 )用于定义 UE支持优化的小数 据处理能力, 一个序号 (01100)用于定义 UE支持的小数据处理方案。 接收端读取到 该 LCID后,即可知道对应的 MAC PDU中有 UE支持小数据处理能力以及 UE支持的 小数据处理方案信息, 然后即可读取该 MAC CE中的数据。 本优选实施例中, 将 UE支持优化的小数据处理能力信息取值置" 1"指示 UE支持 优化的小数据处理, 将图 15中用于定义 UE支持的小数据传输方案 M7和 M8对应的 bit位置 "1", 其余全部置" 0", 表示该 UE支持小数据传输方案 7和 8两种。 本优选实施例中, UE支持小数据传输方案 7和 8共二种, eNB得知 UE支持的小 数据处理方案后, 在后续的小数据传输过程中使用方案 7和 /或方案 8传输小数据。 步骤 S912, eNB利用初始用户设备消息向 MME发送请求信息。 eNB从 UE收到携带有 NAS PDU的 RRC连接建立完成消息后, 将其中的 NAS PDU通过初始用户设备消息发送给 MME。 步骤 S914, MME向 eNB发送初始上下文建立请求消息。 MME将对应用户设备的连接信息告知 eNB, 包括接入层安全上下文信息、 切换 限制信息、 QoS信息、 服务网关用于用户面的隧道终端标识和地址信息等。 步骤 S916, eNB向用户设备发送安全模式命令消息。 eNB向用户设备或 MTC设备发送安全模式命令, 用于激活用户设备的安全性, 包括使用的算法等内容。 步骤 S918, 用户设备向 eNB发送安全模式完成消息。 用户设备向 eNB发送安全模式完成消息, 告知 eNB安全性已经激活。 步骤 S920, eNB向用户设备发送 RRC连接重配置消息。 eNB向用户设备发送 RRC连接重配置消息,用于为用户设备建立 DRB以及 SRB2。 需要说明的是, 步骤 S920可在步骤 S918之前进行。 步骤 S922, 用户设备向 eNB发送 RRC连接重配置完成消息。 用户设备向 eNB发送 RRC连接重配置完成消息, 告知 eNB数据无线承载以及 SRB2配置完成。 步骤 S924, eNB向 MME发送初始上下文建立响应消息。 eNB向 MME发送初始上下文建立响应消息,该消息中携带 eNB的隧道终端标识 和 eNB用于 S1接口用户面下行业务的地址信息等, 告知 MME完成上下文的建立。 优选实施例四 图 10 是根据本发明优选实施例四的接入网设备通过系统消息向用户设备指示小 数据处理能力信息的流程图, 如图 10所示, 包括如下的步骤 S1002至步骤 S1010。 步骤 S1002, 用户设备选择或重选至当前小区。 用户设备依据小区选择或重选准则选择至当前小区, 并在当前小区驻留。 步骤 S1004, 用户设备获得 eNB发送的主信息块(Master Information Block, 简称 为 MIB) 信息。
UE获得的主信息块信息主要包括小区的下行带宽、系统帧号等信息,用于从该小 区中获得其他信息。 步骤 S1006, 用户设备获得系统信息块 (System Information Block, 简称为 SIB) 类型 1。 用户设备获得 SIB1,该信息块中主要含有用于小区接入限制的信息例如小区是否 被禁止接入信息等, 该信息块中还包括其他系统信息块的调度信息。 步骤 S1008, 用户设备获得 SIB2信息。 用户设备获得 SIB2信息,该信息块中主要包括无线资源配置信息等。本优选实施 例中, eNB 将支持优化小数据处理方法的能力信息及支持的小数据处理方案添加在 SIB2中, eNB将支持优化小数据能力信息 bit位置 "1"表示支持优化的小数据传输, eNB 支持的小数据传输方案 M5和 M6对应的 bit位置" 1", 其余全部置" 0"。 eNB可以使用 任一 SIB消息向 UE发送小数据处理能力 IE, 本优选实施例中在 SIB2中添加向用户 设备传递的小数据处理相关信息。 步骤 S1010, 用户设备判断在后续的小数据传输过程中使用的小数据传输方案。 本优选实施例中, 用户设备支持的小数据处理方案为 M3及 M8, UE在通过系统 消息得知 eNB支持的小数据处理方案后,判定在后续的小数据处理过程中不使用优化 的小数据处理方案, 按照正常的数据传输流程进行传递。 优选实施例五 图 11是根据本发明优选实施例五的用户设备通过 TAI链表 (list) 及系统信息得 知接入网设备及核心网设备小数据处理能力信息的流程图, 如图 11所示, 包括如下的 步骤 S1102至步骤 S1114。 步骤 S1102, 用户设备选择或重选至当前小区。 用户设备依据小区选择或重选准则选择至当前小区, 并在当前小区驻留。 步骤 S 1104, 用户设备获得 eNB发送的 MIB信息。
UE获得的主信息块信息主要包括小区的下行带宽、系统帧号等信息,用于从该小 区中获得其他信息。 步骤 S1106, 用户设备获得 SIB1。 用户设备获得 SIB1,该信息块中主要含有用于小区接入限制的信息例如小区是否 被禁止接入信息等, 该信息块中还包括其他系统信息块的调度信息。 步骤 S1108, 用户设备获得 SIB2信息。 用户设备获得 SIB2信息, 该信息块中主要包括追踪区域码 (Tracking Area Code, 简称为 TAC), 无线资源接入等信息。 步骤 S1110, 用户设备通过获得的 TAI list判断 MME是否具有支持优化小数据处 理方法的能力。
TAI list字节头部对应的结构如表 3所示。
表 3 TAI list表头
8 7 6 5 4 3 2 1 预留 链表类型 单元数量
比特 本优选实施例中, 定义预留 bit位置 "1"表示该链表中 TAC对应的 eNB支持优化 小数据处理方法的能力, 预留 bit位置" 0"表示该链表中 TAC对应的 eNB不支持优化 小数据处理方法。目前 TAI list中的 eNB均由同一个 MME进行管理,因此对应的 MME 具备支持优化的小数据处理方法的能力。 步骤 S1112, 用户设备通过获得的 SIB2判断 eNB是否具有支持优化小数据处理 方法的能力。 本优选实施例中, 用户设备从 SIB2中获得当前 eNB的 TAC后, 通过与追踪区域 标识链表中的 TAC对比得知当前 eNB是否具有支持优化小数据处理方法的能力。 本优选实施例中 UE保存的 TAI list如表 4 所示, 为相同公众陆地移动电话网 (Public Land Mobile Network, 简称为 PLMN) 下连续 TAC对应的 TAI list。 表 4
8 7 6 5 4 3 2 1
1 链表类型 单元数量 字节 1 移动国家代码 2 移动国家代码 1 字节 2 移动网络代码 3 移动国家代码 3 字节 3 移动网络代码 2 移动网络代码 1 字节 4 追踪区域代码 1 字节 5 追踪区域代码 1 (接续) 字节 6 本优选实施例中 eNB对应的 TAC包含在预留 bit位置 "1"的 TAI list中, 即当前的 eNB支持优化小数据处理方法。 步骤 S1114, 用户设备判断能否在后续的小数据发送时使用优化的小数据处理方 案。 本优选实施例中, 用户设备通过系统信息及 TAI list得知 eNB支持优化的小数据 处理方案, 因此可以在后续的小数据发送时使用优化的小数据处理方案。 优选实施例六 图 12是根据本发明优选实施例六的用户设备与接入网设备间通过新的 RRC信令 完成小数据处理能力信息交互的流程图,如图 12所示,包括如下的步骤 S1202至步骤 S1228。 步骤 S1202, 用户设备向 eNB发送随机接入前导序列。 当用户设备有数据或信令需要发送时, 首先选择一个前导序列 (Preamble) 并根 据系统配置的随机接入资源信息, 向 eNB发送前导序列。 步骤 S1204, eNB向用户设备发送随机接入响应消息 (Msg2)。 本优选实施例中的随机接入响应消息可以包括与用户设备发送的随机接入前导序 列对应的前导序列标识、上行传输定时调整、 为 RRC连接请求消息分配上行资源、 临 时 C-RNTI等。 步骤 S1206, 用户设备向 eNB发送 RRC连接请求。 用户设备在收到 Msg2后, 利用在随机接入响应消息中分配的上行资源发送 RRC 连接建立请求消息, 请求建立 RRC连接。 步骤 S1208, eNB向用户设备发送 RRC连接建立消息。 eNB向用户设备发送 RRC连接建立消息, 用于建立 SRB1, 并为用户设备分配用 于 RRC连接建立完成消息的上行资源。 步骤 S1210, 用户设备向 eNB发送 RRC连接建立完成消息。 用户设备告知网络侧 SRB1建立成功, 并依据此次连接建立的目的向网络侧发送 请求信息。 步骤 S1212, eNB利用初始用户设备消息向 MME发送请求信息。 eNB从 UE收到携带有 NAS PDU的 RRC连接建立完成消息后, 将其中的 NAS PDU通过初始用户设备消息发送给 MME。 步骤 S1214, MME向 eNB发送初始上下文建立请求消息。 MME将对应用户设备的连接信息告知 eNB, 包括接入层安全上下文信息、 切换 限制信息、 QoS信息、 服务网关用于用户面的隧道终端标识和地址信息等。 步骤 S1216, eNB向用户设备发送安全模式命令消息。 eNB向用户设备或 MTC 设备发送安全模式命令, 用于激活用户设备的安全性, 包括使用的算法等内容。 步骤 S1218, 用户设备向 eNB发送安全模式完成消息。 用户设备向 eNB发送安全模式完成消息, 告知 eNB安全性已经激活。 步骤 S1220, eNB向用户设备发送 RRC连接重配置消息。 eNB向用户设备发送 RRC连接重配置消息,用于为用户设备建立 DRB以及 SRB2。 需要说明的是步骤 S1220可在步骤 S1218之前进行。 步骤 S1222, 用户设备向 eNB发送 RRC连接重配置完成消息。 用户设备向 eNB发送 RRC连接重配置完成消息, 告知 eNB数据无线承载以及 SRB2配置完成。 步骤 S1224, eNB向 MME发送初始上下文建立响应消息。 eNB向 MME发送初始上下文建立响应消息,该消息中携带 eNB的隧道终端标识 和 eNB用于 S1接口用户面下行业务的地址信息等, 告知 MME完成上下文的建立。 步骤 S1226, 用户设备向 eNB发送小数据处理能力信息指示消息。
UE 在此消息中指示了其具有使用优化的小数据处理方法的能力信息, 并通过 bitmap的形式将 UE支持的小数据处理方法信息告知 eNB。 新的小数据处理能力信息 指示消息包括 RRC处理标识字段、 小数据处理能力字段; 当然, 根据需要还可以包括 非关键性扩展字段等。 其中小数据处理能力字段还可以包括, 使用优化的小数据处理 方法的能力信息字段和 /或小数据处理方法信息字段。 如图 15所示, 其中 M8至 Ml表示 eNB是否支持的小数据传输方案 8至方案 1 对应的传输方法,将 bit位置" 1"表示 eNB支持该小数据传输方案, bit位置" 0"表示 eNB 不支持该小数据传输方案。 本优选实施例中, UE支持小数据传输方案 1和 4共二种, 则将对应的 Ml和 M4 比特位置" 1", 其余比特位置 "0"。 eNB得知 UE支持的小数据传输方案后, 在后续的 小数据传输过程中使用方案 1和 /或方案 4传输小数据。 步骤 S1228, eNB向用户设备发送小数据处理能力信息反馈消息。 eNB 在此消息中指示了其具有使用优化的小数据处理方法的能力信息, 并通过 bitmap的形式将 eNB支持的小数据处理方法信息告知 UE。 新的小数据处理能力信息 反馈消息包括 RRC处理标识字段、 小数据处理能力字段; 当然, 根据需要还可以包括 非关键性扩展字段等。 其中小数据处理能力字段还可以包括使用优化的小数据处理方 法的能力信息字段和 /或小数据处理方法信息字段。 如图 15所示其中 M8至 Ml表示 eNB是否支持的小数据传输方案 8至方案 1对 应的传输方法, 将 bit位置 "1"表示 eNB支持该小数据传输方案, bit位置" 0"表示 eNB 不支持该小数据传输方案。 本优选实施例中, eNB支持小数据传输方案 1、 2、 3、 4共四种, 则将对应的 Ml 至 M4比特位置" 1", 其余比特位置 "0"。 UE支持小数据传输方案 1和 4共二种, UE 得知 eNB 的小数据传输方案后, 则在后续的小数据传输过程使用方案 1和 /或方案 4 传输小数据。 步骤 S1226和步骤 S1228可在步骤 S1210之后任意时间执行。 优选实施例七 图 13是根据本发明优选实施例七的用户设备与接入网设备间通过新的 NAS信令 完成小数据处理能力信息交互的流程图,如图 13所示,包括如下的步骤 S1302至步骤
步骤 S1302, 用户设备向 eNB发送随机接入前导序列。 当用户设备有数据或信令需要发送时, 首先选择一个前导序列 (Preamble) ,并根 据系统配置的随机接入资源信息向 eNB发送前导序列。 步骤 S1304, eNB向用户设备发送随机接入响应消息 (Msg2)。 随机接入响应消息可能包括与用户设备发送的随机接入前导序列对应的前导序列 标识、 上行传输定时调整、 为 RRC连接请求消息分配上行资源、 临时 C-RNTI等。 步骤 S1306, 用户设备向 eNB发送 RRC连接请求。 用户设备在收到 Msg2后, 利用在随机接入响应消息中分配的上行资源发送 RRC 连接建立请求消息。 步骤 S 1308, eNB向用户设备发送 RRC连接建立消息。 eNB向用户设备发送 RRC连接建立消息, 用于建立 SRB1, 并为用户设备分配用 于 RRC连接建立完成消息的上行资源。 步骤 S 1310, 用户设备向 eNB发送 RRC连接建立完成消息。 用户设备告知网络侧 SRB1建立成功, 并在 NAS PDU中向网络侧发送小数据处 理能力指示消息, 指示其具有使用优化的小数据处理方法的能力信息和 UE所支持的 小数据处理方法信息。 小数据处理能力指示消息包括小数据处理能力信息字段, 还可 以包括全球唯一临时标识 (Globally Unique Temporary Identity, 简称为 GUTI)、 协议 配置选项 (Protocol Configuration Options, 简称为 PCO) 等字段。 本优选实施例中, UE支持小数据传输方案 2和 3共二种, 则将图 15 中对应的 M2禾 B M3比特位置" 1", 其余比特位置 "0"。 步骤 S1312, eNB利用初始用户设备消息向 MME发送小数据处理能力反馈消息。 eNB从 UE收到携带有指示其具有使用优化的小数据处理方法的能力信息和 UE 所支持的小数据传输方法信息的小数据处理能力反馈消息, 并将该消息通过初始用户 设备消息发送给 MME。 小数据处理能力反馈消息包括小数据处理能力信息字段, 还 可以包括 GUTI、 PCO等字段。 本优选实施例中, MME支持全部小数据传输方案, 则 MME得知 UE支持的小数 据传输方案后, 在后续的小数据传输过程中使用方案 2和 /或方案 3传输小数据。 步骤 S1314, MME向 eNB发送初始上下文建立请求消息。
MME 在小数据处理能力反馈消息中携带有指示其具有使用优化的小数据处理方 法的能力信息和 UE所支持的小数据传输方法信息的。 通过初始上下文建立请求消息 将小数据处理能力反馈消息发送给 UE。 本优选实施例中, MME支持全部小数据传输方案共八种, 则将对应的 Ml至 M8 比特位均置" 1"。 步骤 S 1316, eNB向 UE发送 RRC连接重配置消息。 eNB通过 RRC连接重配置消息将在小数据处理能力反馈消息中携带的指示其具 有使用优化的小数据处理方法的能力信息和 UE所支持的小数据传输方法信息发送给 UE。 UE从小数据处理能力反馈消息中得知 MME关于小数据的处理情况。 本优选实施例中, UE支持小数据传输方案 2和 3共二种, UE得知 eNB的小数据 传输方案后, 则在后续的小数据传输过程使用方案 2和 /或方案 3传输小数据。 优选实施例八 图 14是根据本发明优选实施例八的用户设备与目标基站通过 RRC信令完成小数 据处理能力信息交互的流程图, 如图 14所示, 包括如下的步骤 S1402至步骤 S1414。 步骤 S1402, 用户设备向源 eNB发送测量报告。 当用户设备满足配置的上报测量条件时, 向源 eNB上报测量结果。 步骤 S1404, 源 eNB向目标 eNB发送切换请求消息。 源 eNB收到 UE上报的测量结果后, 依据无线资源管理信息决定切换该 UE, 源 eNB向目标 eNB发起切换请求。 步骤 S1406, 目标 eNB向源 eNB发送切换请求确认消息。 目标 eNB收到源 eNB的切换请求后,依据接入允许控制条件判定该 UE能否接入, 本优选实施例中目标 eNB允许 UE接入, 并在此消息中向 UE发送专属随机接入前导 序列以及目标 eNB安全算法信息等, 目标 eNB向源 eNB发送切换请求确认消息。 目 标 eNB在切换请求确认消息中携带有指示其具有使用优化的小数据处理方法的能力信 息和 UE所支持的小数据传输方法信息的。 本优选实施例中, 目标 eNB支持全部小数据传输方案共八种, 则将对应的 Ml至
M8比特位均置" 1"。 步骤 S1408, 源 eNB向 UE发送 RRC连接重配置消息。 源 eNB将从目标 eNB收到的切换请求确认消息中得到的信息通过 RRC连接重配 置消息发送给 UE, 这些信息被 UE用于后续的操作过程。 本优选实施例中源 eNB通 过 RRC 连接重配置消息将在切换请求确认消息中携带的指示其具有使用优化的小数 据处理方法的能力信息和 UE所支持的小数据传输方法信息发送给 UE。 本优选实施例中, UE支持小数据传输方案 2和 3共二种, UE得知目标 eNB的小 数据传输方案后, 则在后续的小数据传输过程使用方案 2和 /或方案 3传输小数据。 步骤 S1410, 用户设备向目标 eNB发送随机接入前导序列。 用户设备向目标 eNB发送随机接入前导序列, 该序列是由目标 eNB提供的。 步骤 S1412, 目标 eNB向 UE发送随机接入响应消息。 随机接入响应消息可能包括与用户设备发送的随机接入前导序列对应的前导序列 标识、 上行传输定时调整、 为 RRC连接请求消息分配上行资源、 临时 C-RNTI等。 步骤 S1414, UE向目标 eNB发送 RRC连接重配置完成消息。 本优选实施例中 UE通过 RRC连接重配置完成消息将其具有使用优化的小数据处 理方法的能力信息和 UE所支持的小数据传输方法信息发送给目标 eNB。 本优选实施例中, UE具有使用优化的小数据处理方法的能力信息, UE支持小数 据传输方案 2和 3共二种, 则将图 15中对应的 M2和 M3比特位置" 1", 其余比特位 置" 0"。 目标 eNB支持全部小数据传输方案, 则目标 eNB得知 UE支持的小数据传输 方案后, 在后续的小数据传输过程中使用方案 2和 /或方案 3传输小数据。 需要说明的是, 在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的 计算机系统中执行, 并且, 虽然在流程图中示出了逻辑顺序, 但是在某些情况下, 可 以以不同于此处的顺序执行所示出或描述的步骤。 综上所述, 根据本发明的上述实施例, 用户设备向网络设备发送该用户设备的数 据处理能力信息, 使得网络设备获知用户设备能够采用的传输小数据的方法, 以确定 二者之间传输小数据时可以使用哪种方法, 同样的网络设备也可向用户设备发送该网 络设备的数据处理能力信息, 保证了用户设备与网络设备在小数据处理能力上具有相 同的认知, 最终使得选择的小数据处理方案充分发挥优势, 减少网络设备与用户设备 因能力不匹配而引起的异常情况, 最终达到减少因小数据传输产生的信令开销、 实现 网络的性能优化、 提升系统效率的目的。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多个计算装置所 组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码来实现, 从而, 可以 将它们存储在存储装置中由计算装置来执行, 或者将它们分别制作成各个集成电路模 块, 或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样, 本发明 不限制于任何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的 任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。 工业实用性 本发明实施例提供的技术方案可以应用于通信领域, 用户设备向网络设备发送自 身的数据处理能力信息, 使得网络设备获知用户设备能够采用的传输小数据的方法, 以确定二者之间传输小数据时可以使用哪种方法, 同样的网络设备也可向用户设备发 送自身的数据处理能力信息, 保证用户设备与网络设备在小数据处理能力上具有相同 认知, 使得选择的小数据处理方案充分发挥优势, 减少网络设备与用户设备因能力不 匹配引起的异常情况。

Claims

权 利 要 求 书
1. 一种数据传输方法, 包括:
用户设备向网络设备发送所述用户设备的数据处理能力信息; 所述用户设备通过所述网络设备确定的传输小数据的方法与所述网络设备 进行小数据的传输, 其中, 所述传输小数据的方法是所述网络设备根据所述数 据处理能力信息确定的, 所述小数据的大小处于预定范围内。
2. 根据权利要求 1所述的方法, 其中, 所述用户设备通过以下之一的方式向所述 网络设备发送所述数据处理能力信息:
在已有的上行无线资源控制 RRC 信令中添加用于指示所述数据处理能力 信息的信息单元 IE;
添加用于指示所述数据处理能力信息的上行媒体接入控制 MAC控制单元
CE;
在上行非接入层 NAS信令中添加所述数据处理能力信息;
使用 RRC消息和 /或 NAS消息发送所述数据处理能力信息。
3. 根据权利要求 1所述的方法, 其中, 用户设备向网络设备发送所述用户设备的 数据处理能力信息包括: 所述用户设备在与所述网络设备的连接过程中通过信 令交互向所述网络设备发送所述数据处理能力信息。
4. 根据权利要求 3所述的方法, 其中, 所述用户设备与所述网络设备的连接过程 包括以下之一: RRC连接建立过程、移动管理过程、会话管理过程、切换过程。
5. 根据权利要求 1至 4中任一项所述的方法, 其中, 所述数据处理能力信息包括 以下至少之一:
指示所述用户设备是否支持所述传输小数据的方法的信息;
指示所述用户设备允许使用的一种或多种传输小数据的方法的信息。
6. 一种数据传输方法, 包括:
接入网设备向用户设备发送所述接入网设备的数据处理能力信息; 所述接入网设备通过所述用户设备确定的传输小数据的方法与所述用户设 备进行小数据的传输, 其中, 所述传输小数据的方法是所述用户设备根据所述 数据处理能力信息确定的, 所述小数据的大小处于预定范围内。
7. 根据权利要求 6所述的方法, 其中, 所述接入网设备通过以下之一的方式向所 述用户设备发送所述数据处理能力信息:
在已有的下行无线资源控制 RRC 信令中添加用于指示所述数据处理能力 信息的信息单元 IE;
添加用于指示所述数据处理能力信息的下行媒体接入控制 MAC控制单元
CE; 在系统消息中添加所述数据处理能力信息;
使用 RRC消息发送所述数据处理能力信息;
使用追踪区域标识 TAI链表进行所述数据处理能力信息的指示。
8. 根据权利要求 6所述的方法, 其中, 接入网设备向用户设备发送所述接入网设 备的数据处理能力信息包括: 所述接入网设备在与所述用户设备的连接过程中 通过信令交互向所述用户设备发送所述数据处理能力信息。
9. 根据权利要求 8所述的方法, 其中, 所述接入网设备与所述用户设备的连接过 程包括以下之一: RRC连接建立过程、 系统消息传递过程、 切换过程、 移动管 理过程、 会话管理过程。
10. 根据权利要求 6至 9中任一项所述的方法, 其中, 所述数据处理能力信息包括 以下至少之一:
指示所述接入网设备是否支持所述传输小数据的方法的信息; 指示所述接入网设备允许使用的一种或多种传输小数据的方法的信息。
11. 一种数据传输方法, 包括:
核心网设备向用户设备发送所述核心网设备的数据处理能力信息; 所述核心网设备通过所述用户设备确定的传输小数据的方法与所述用户设 备进行小数据的传输, 其中, 所述传输小数据的方法是所述用户设备根据所述 数据处理能力信息确定的, 所述小数据的大小处于预定范围内。
12. 根据权利要求 11所述的方法,其中,所述核心网设备通过以下之一的方式向所 述用户设备发送所述数据处理能力信息:
在已有的下行非接入层 NAS 信令中添加用于指示所述数据处理能力信息 的信息单元 IE;
使用追踪区域标识 TAI链表进行所述数据处理能力信息的指示; 使用 NAS消息发送所述数据处理能力信息。
13. 根据权利要求 11所述的方法,其中, 核心网设备向用户设备发送所述核心网设 备的数据处理能力信息包括: 所述核心网设备在与所述用户设备的连接过程中 通过信令交互向所述用户设备发送所述数据处理能力信息。
14. 根据权利要求 13所述的方法,其中,所述核心网设备与所述用户设备的连接过 程包括以下之一: 移动管理过程、 会话管理过程。
15. 根据权利要求 11至 14中任一项所述的方法, 其中, 所述数据处理能力信息包 括以下至少之一:
指示所述核心网设备是否支持所述传输小数据的方法的信息; 指示所述核心网设备允许使用的一种或多种传输小数据的方法的信息。
16. 一种数据传输装置, 应用于用户设备, 包括:
第一发送模块,设置为向网络设备发送所述用户设备的数据处理能力信息; 第一传输模块, 设置为通过所述网络设备确定的传输小数据的方法与所述 网络设备进行小数据的传输, 其中, 所述传输小数据的方法是所述网络设备根 据所述数据处理能力信息确定的, 所述小数据的大小处于预定范围内。
17. 一种数据传输装置, 应用于接入网设备, 包括:
第二发送模块, 设置为向用户设备发送所述接入网设备的数据处理能力信 息;
第二传输模块, 通过所述用户设备确定的传输小数据的方法与所述用户设 备进行小数据的传输, 其中, 所述传输小数据的方法是所述用户设备根据所述 数据处理能力信息确定的, 所述小数据的大小处于预定范围内。
18. 一种数据传输装置, 应用于核心网设备, 包括: 第三发送模块, 设置为向用户设备发送所述核心网设备的数据处理能力信 息;
第三传输模块, 设置为通过所述用户设备确定的传输小数据的方法与所述 用户设备进行小数据的传输, 其中, 所述传输小数据的方法是所述用户设备根 据所述数据处理能力信息确定的, 所述小数据的大小处于预定范围内。 一种数据传输系统, 包括: 用户设备、 接入网设备和核心网设备, 其中, 所述 用户设备包括权利要求 16所述的数据传输装置,所述接入网设备包括权利要求 17所述的数据传输装置, 所述核心网设备包括权利要求 18所述的数据传输装
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