WO2015165051A1 - 数据传输方法及设备 - Google Patents

数据传输方法及设备 Download PDF

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Publication number
WO2015165051A1
WO2015165051A1 PCT/CN2014/076520 CN2014076520W WO2015165051A1 WO 2015165051 A1 WO2015165051 A1 WO 2015165051A1 CN 2014076520 W CN2014076520 W CN 2014076520W WO 2015165051 A1 WO2015165051 A1 WO 2015165051A1
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WO
WIPO (PCT)
Prior art keywords
base station
user equipment
header
data unit
protocol data
Prior art date
Application number
PCT/CN2014/076520
Other languages
English (en)
French (fr)
Inventor
曾清海
张宏平
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201480001015.8A priority Critical patent/CN105230068B/zh
Priority to EP14890823.9A priority patent/EP3131333B1/en
Priority to KR1020167033096A priority patent/KR101879969B1/ko
Priority to JP2016565144A priority patent/JP6329277B2/ja
Priority to PCT/CN2014/076520 priority patent/WO2015165051A1/zh
Publication of WO2015165051A1 publication Critical patent/WO2015165051A1/zh
Priority to US15/338,705 priority patent/US10098173B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/15Setup of multiple wireless link connections
    • H04W76/16Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/08Load balancing or load distribution
    • H04W28/09Management thereof
    • H04W28/0925Management thereof using policies
    • H04W28/0942Management thereof using policies based on measured or predicted load of entities- or links
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/12Setup of transport tunnels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W12/00Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/10Integrity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/06Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/51Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/26Network addressing or numbering for mobility support
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/06Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/11Allocation or use of connection identifiers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10Small scale networks; Flat hierarchical networks
    • H04W84/12WLAN [Wireless Local Area Networks]

Definitions

  • the embodiments of the present invention relate to communication technologies, and in particular, to a data transmission method and device. Background technique
  • WLAN wireless local area network
  • the wireless cellular network has the advantages of wide coverage, high-speed mobile support, and the disadvantages of low data rate, high price, and large transmission power. It is suitable for high-speed sports and outdoor large-scale activities.
  • the WLAN has the advantages of high data rate, low price, low transmission power, and the like, and has a small coverage, and is suitable for relatively static, indoor small-scale activities and the like. Considering the advantages and disadvantages of wireless cellular networks and wireless local area networks, a feasible method is to integrate wireless cellular technology and WLAN technology, and use WLAN to offload data traffic of wireless cellular communication systems, improve user experience, and achieve efficient and low-cost communication. .
  • a communication technology in which a user equipment (User Equipment, UE for short) has accessed an evolved packet core network (Evolved Packet Core, EPC for short) through a base station, and through a packet data network gateway (Packet Data Network) -Gateway, PDN-GW) Establish a Packet Data Network (PDN) connection. Then, the UE can access the EPC through, for example, a Trusted Wireless Local Area Networks Access Network (TWAN), and the TWAN can select a PDN-GW to create a PDN connection, thereby implementing Wireless cellular technology and WLAN technology are integrated.
  • EPC evolved Packet Core
  • PDN-GW Packet Data Network
  • TWAN Trusted Wireless Local Area Networks Access Network
  • the embodiment of the invention provides a data transmission method and device, which ensures service continuity and improves user experience while implementing offloading.
  • the first aspect of the present invention provides a data transmission method, including: sending, by a base station, request information to a user equipment, an identifier of a WLAN AP of a wireless local area network access point, and a first IP address of the base station, the request information And a data transmission for requesting the user equipment to perform multi-stream aggregation with the base station via the WLAN AP;
  • the base station performs multi-stream aggregation data transmission with the user equipment by using the WLAN AP, and the IP tunnel is determined by the first IP address and the second IP address.
  • the base station has a base station protocol stack, and the base station performs multi-stream aggregation with the user equipment by using the WLAN AP by using the IP tunnel.
  • Data transfer including:
  • the base station Receiving, by the base station, the second protocol data unit that is sent by the user equipment by using the WLAN AP by using the IP tunnel, deleting an IP header of the second protocol data unit, and indicating an aggregation layer processing manner of the base station protocol stack
  • the second protocol data unit of the IP header is deleted, wherein the IP header is added by the user equipment to the second protocol data unit generated by the aggregation layer of the user equipment protocol stack.
  • the user equipment includes:
  • the base station adds an IP header to the first protocol data unit generated by the aggregation layer of the base station protocol stack, where the IP header includes radio bearer information corresponding to the first protocol data unit added by the base station according to the location information, and Sending, by the IP tunnel, the first protocol data unit to which the IP header is added, to the user equipment, where the radio bearer information is used by the user equipment to indicate the user equipment protocol stack.
  • An aggregation layer mapped with the radio bearer information The body protocol deletes the first protocol data unit of the IP header; or
  • the base station Receiving, by the base station, the second protocol data unit that is sent by the user equipment by using the WLAN AP by using the IP tunnel, deleting an IP header of the second protocol data unit, and indicating an aggregation layer processing manner of the base station protocol stack
  • the second protocol data unit of the IP header is deleted, including:
  • the location information is sent by the base station to the user equipment, or by the base station and the Said user equipment according to the communication protocol;
  • the location information is used to indicate a location of the radio bearer information in the IP header.
  • the radio bearer information includes a radio bearer identifier or a logical channel identifier.
  • the IP header further includes priority information of the logical channel corresponding to the logical channel identifier, or
  • the radio bearer identifies the priority information of the radio bearer corresponding to the radio bearer.
  • the aggregation layer of the base station protocol stack is used to:
  • the aggregation layer includes any one of the following:
  • Packet Data Convergence Protocol PDCP layer Packet Data Convergence Protocol
  • media access control MAC layer media access control MAC layer
  • radio link control RLC layer IP layer.
  • the IP header of the first protocol data unit further includes a source IP address And the destination IP address, the source IP address is the first IP address, and the destination IP address is the second IP address; or
  • the IP address of the second protocol data unit further includes a source IP address and a destination IP address, the source IP address is the second IP address, and the destination IP address is the first IP address.
  • the method further includes:
  • an embodiment of the present invention provides a data transmission method, including:
  • the user equipment receives the request information sent by the base station, the identifier of the WLAN AP of the WLAN access point, and the first IP address of the base station, where the request information is used to request the user equipment to perform with the base station via the WLAN AP.
  • the user equipment performs multi-stream aggregation data transmission with the base station via the WLAN AP through an IP tunnel, where the IP tunnel is determined by the first IP address and the second IP address.
  • the user equipment has a user equipment protocol stack, and the user equipment performs multi-stream aggregation with the base station by using the WLAN AP through an IP tunnel.
  • Data transfer including:
  • the user equipment receives a first protocol that is sent by the base station by using the WLAN AP by using the IP tunnel a data unit, deleting an IP header of the first protocol data unit, and indicating the location
  • the aggregation layer of the user equipment protocol stack processes the first protocol data unit that deletes the IP header, and includes:
  • Adding, by the user equipment, an IP header to a second protocol data unit generated by an aggregation layer of the user equipment protocol stack, and transmitting, by using the IP tunnel, a second protocol data unit to which the IP header is added, by using the WLAN AP Sending to the base station includes:
  • the user equipment adds an IP header to the second protocol data unit generated by the aggregation layer of the user equipment protocol stack, where the IP header includes the radio bearer corresponding to the second protocol data unit added by the user equipment according to the location information. And transmitting, by the IP tunnel, the second protocol data unit that adds the IP header to the base station by using the WLAN AP, where the radio bearer information is used by the base station to indicate the base station protocol stack.
  • the aggregation layer entity of the radio bearer information mapping processes the second protocol data unit with the IP header deleted.
  • the location information is sent by the base station to the user equipment, or by the base station and the Said user equipment according to the communication protocol;
  • the location information is used to indicate a location of the radio bearer information in the IP header.
  • the radio bearer information includes a radio bearer identifier or a logical channel identifier.
  • the IP header further includes priority information of the logical channel corresponding to the logical channel identifier, or The radio bearer identifies the priority information of the radio bearer corresponding to the radio bearer.
  • the aggregation layer of the user equipment protocol stack is used to:
  • the aggregation layer includes any one of the following:
  • Packet Data Convergence Protocol PDCP layer Packet Data Convergence Protocol
  • media access control MAC layer media access control MAC layer
  • radio link control RLC layer IP layer.
  • the IP header of the first protocol data unit further includes a source IP address and a destination IP address, the source IP address is the first IP address, and the destination IP address is the second IP address;
  • the IP address of the second protocol data unit further includes a source IP address and a destination IP address, the source IP address is the second IP address, and the destination IP address is the first IP address.
  • the method further includes:
  • the user equipment performs integrity protection on the second protocol data unit to which the IP header is added.
  • an embodiment of the present invention provides a base station, including:
  • a transmitting unit configured to send, to the user equipment, request information, an identifier of the WLAN access point WLAN AP, and a first IP address of the base station, where the request information is used to request the user equipment to use the WLAN AP and the The base station performs data transmission of multi-stream aggregation;
  • the base station performs data transmission of multi-stream aggregation
  • a processing unit configured to perform multi-stream aggregation data transmission with the user equipment by using the WLAN AP by using the IP tunnel, where the IP tunnel is determined by the first IP address and the second IP address.
  • the base station further includes a base station protocol stack unit:
  • the processing unit is specifically configured to: add an IP header to a first protocol data unit generated by an aggregation layer of the base station protocol stack unit; the transmitting unit is further configured to: add a first protocol data unit of the IP header Sending to the user equipment via the WLAN AP by using the IP tunnel; or,
  • the receiving unit is further configured to: receive a second protocol data unit that is sent by the user equipment by using the WLAN AP by using the IP tunnel; the processing unit is specifically configured to: delete an IP header of the second protocol data unit And instructing the aggregation layer of the base station protocol stack unit to process the second protocol data unit that has deleted the IP header, where the IP header is generated by the user equipment to the aggregation layer of the user equipment protocol stack. Two protocol data units are added.
  • the transmitting unit sends the first protocol data unit to which the IP header is added to the user equipment
  • the processing unit is specifically configured to: Adding an IP header to the first protocol data unit generated by the aggregation layer of the unit, where the IP header includes radio bearer information corresponding to the first protocol data unit added by the processing unit according to the location information, where the radio bearer information is used by the
  • the user equipment instructs the aggregation layer entity in the user equipment protocol stack that is mapped with the radio bearer information to process the first protocol data unit that deletes the IP header; or
  • the processing unit is specifically configured to: use an IP header of the second protocol data unit according to the location information. Obtaining radio bearer information corresponding to the second protocol data unit, deleting an IP header of the second protocol data unit, and indicating an aggregation layer entity processing station in the base station protocol stack unit that is mapped with the radio bearer information The second protocol data unit of the IP header is deleted.
  • the location information is used to indicate a location of the radio bearer information in the IP header
  • the transmitting unit is further configured to send the location information to the user equipment;
  • the processing unit is further configured to appoint the location information with the user equipment according to a communication protocol.
  • the radio bearer information includes a radio bearer identifier or a logical channel identifier.
  • the IP header further includes priority information of the logical channel corresponding to the logical channel identifier, or The radio bearer identifies the priority information of the radio bearer corresponding to the radio bearer.
  • the aggregation layer of the base station protocol stack unit is used to:
  • the aggregation layer includes any one of the following:
  • Packet Data Convergence Protocol PDCP layer Packet Data Convergence Protocol
  • media access control MAC layer media access control MAC layer
  • radio link control RLC layer IP layer.
  • the IP header of the first protocol data unit further includes a source IP address and a destination IP address, where the source IP address is the first IP address, and the destination IP address is the second IP address;
  • the IP address of the second protocol data unit further includes a source IP address and a destination IP address, the source IP address is the second IP address, and the destination IP address is the first IP address.
  • the processing unit is further configured to add the IP header to the A protocol data unit performs integrity protection.
  • an embodiment of the present invention provides a user equipment, including:
  • a receiving unit configured to receive request information sent by the base station, an identifier of the WLAN AP of the WLAN access point, and a first IP address of the base station, where the request information is used to request the user equipment to use the WLAN AP and the The base station performs data transmission of multi-stream aggregation;
  • a transmitting unit configured to send an acknowledgment message to the base station, and a second IP address that is allocated by the WLAN AP to the user equipment, where the acknowledgment information is used to confirm that the user equipment performs the same with the base station by using the WLAN AP.
  • a processing unit configured to perform multi-stream aggregation data transmission with the base station by using the WLAN AP by using an IP tunnel, where the IP tunnel is determined by the first IP address and the second IP address.
  • the user equipment further includes a user equipment protocol stack unit:
  • the receiving unit is further configured to: receive a first protocol data unit that is sent by the base station by using the WLAN AP by using the IP tunnel, where the processing unit is specifically configured to: delete an IP header of the first protocol data unit, And indicating that the aggregation layer of the user equipment protocol stack unit processes the first protocol data unit that deletes the IP header, where the IP header is generated by the base station to the first protocol of the aggregation layer of the base station protocol stack Data unit addition; or
  • the processing unit is specifically configured to: add an IP header to the second protocol data unit generated by the aggregation layer of the user equipment protocol stack unit; the transmitting unit is further configured to: add the second protocol data that adds the IP header The unit transmits to the base station via the WLAN AP through the IP tunnel.
  • the receiving unit by the receiving unit, receives a first protocol that is sent by the base station by using the WLAN AP by using the IP tunnel
  • the processing unit is specifically configured to:
  • the radio bearer information corresponding to the first protocol data unit from the IP header of the first protocol data unit, deleting an IP header of the first protocol data unit, and indicating the user equipment protocol stack
  • the aggregation layer entity mapped to the radio bearer information in the unit processes the first protocol data unit with the IP header deleted; or
  • the transmitting unit sends the second protocol data unit to which the IP header is added to the base station by using the WLAN AP, and the processing unit is specifically configured to:
  • IP header Adding an IP header to the second protocol data unit generated by the aggregation layer of the user equipment protocol stack unit, where the IP header includes radio bearer information corresponding to the second protocol data unit added by the user equipment according to the location information, where The radio bearer information is used by the base station to indicate that the aggregation layer entity in the base station protocol stack that is mapped with the radio bearer information processes the second protocol data unit that has deleted the IP header.
  • the location information is used to indicate a location of the radio bearer information in the IP header:
  • the receiving unit is further configured to receive the location information sent by the base station; or
  • the processing unit is further configured to stipulate the location information with the base station according to a communication protocol.
  • the radio bearer information includes a radio bearer identifier or a logical channel identifier.
  • the IP header further includes a priority information of the logical channel corresponding to the logical channel identifier Information, or the priority information of the radio bearer corresponding to the radio bearer identifier.
  • the aggregation layer of the user equipment protocol stack unit is used to:
  • the aggregation layer includes any one of the following:
  • Packet Data Convergence Protocol PDCP layer Packet Data Convergence Protocol
  • media access control MAC layer media access control MAC layer
  • radio link control RLC layer IP layer.
  • the IP header of the first protocol data unit further includes a source IP address and a destination IP address, the source IP address is the first IP address, and the destination IP address is the second IP address;
  • the IP address of the second protocol data unit further includes a source IP address and a destination IP address, the source IP address is the second IP address, and the destination IP address is the first IP address.
  • the processing unit is further configured to add the IP header to the ninth possible implementation manner of the fourth aspect
  • the second protocol data unit performs integrity protection.
  • an embodiment of the present invention provides a base station, including: a network interface, a memory, a processor, and a bus, where the network interface, the memory, and the processor are respectively connected to the bus, where:
  • the processor by using the bus, invokes a program stored in the memory, to: send request information to the user equipment by using the network interface, and a wireless local area network access point
  • the base station performs data transmission of multi-stream aggregation; And the processor performs multi-stream aggregated data transmission with the user equipment by using the WLAN AP by using the IP tunnel, where the IP tunnel is determined by the first IP address and the second IP address.
  • the processor when the processor performs multi-stream aggregation data transmission with the user equipment by using the WLAN AP by using the IP tunnel,
  • the processor is specifically used to:
  • the processor When the processor performs multi-stream aggregation data transmission with the user equipment by using the WLAN AP, the processor is specifically configured to:
  • IP header Adding an IP header to the first protocol data unit generated according to the aggregation layer function of the base station protocol stack, where the IP header includes radio bearer information corresponding to the first protocol data unit added by the processor according to the location information, and The network interface sends the first protocol data unit to which the IP header is added to the user equipment, and the radio bearer information is used by the user equipment according to the user equipment.
  • the aggregation layer function of the aggregation layer entity mapped in the protocol stack with the radio bearer information deletes the first protocol data unit of the IP header; or
  • the second protocol data unit sent by the AP obtains the radio bearer information corresponding to the second protocol data unit from the IP header of the second protocol data unit according to the location information, and deletes the IP header of the second protocol data unit. And processing, according to an aggregation layer function of the aggregation layer entity mapped with the radio bearer information in the base station protocol stack, the second protocol data unit with the IP header deleted.
  • the location information is used to indicate the location of the radio bearer information in the IP header: the processor is further configured to send the location information to the user equipment by using the network interface, or The location information is agreed with the user equipment according to a communication protocol.
  • the radio bearer information includes a radio bearer identifier or a logical channel identifier.
  • the IP header further includes priority information of the logical channel corresponding to the logical channel identifier, or The radio bearer identifies the priority information of the radio bearer corresponding to the radio bearer.
  • the processor is further configured to: according to an aggregation layer function of the base station protocol stack: Diverting the first protocol data unit and the protocol data unit transmitted by the transmitting unit to the user equipment over a wireless cellular network; or
  • the aggregation layer includes any one of the following:
  • Packet Data Convergence Protocol PDCP layer Packet Data Convergence Protocol
  • media access control MAC layer media access control MAC layer
  • radio link control RLC layer IP layer.
  • the IP header of the first protocol data unit further includes a source IP address and a destination IP address, where the source IP address is the first IP address, and the destination IP address is the second IP address;
  • the IP address of the second protocol data unit further includes a source IP address and a destination IP address, the source IP address is the second IP address, and the destination IP address is the first IP address.
  • the processor is further configured to add the IP header to the A protocol data unit performs integrity protection.
  • an embodiment of the present invention provides a user equipment, including: a network interface, a memory, a processor, and a bus, where the network interface, the memory, and the processor are respectively connected to the bus, where: The processor, by using the bus, invoking a program stored in the memory, to: receive, by using the network interface, request information sent by the base station, a wireless local area network access point
  • the processor performs multi-stream aggregation data transmission with the base station by using the WLAN AP by using an IP tunnel, where the IP tunnel is determined by the first IP address and the second IP address.
  • the processor when the processor performs multi-stream aggregation data transmission with the base station by using the WLAN AP by using an IP tunnel, the processor specifically Used for:
  • the processor when the processor performs multi-stream aggregation data with the base station by using the WLAN AP by using an IP tunnel, the processor is specifically configured to:
  • the first protocol data unit sent by the base station by using the WLAN AP, and acquiring the first protocol from an IP header of the first protocol data unit according to location information.
  • the radio bearer information corresponding to the data unit is deleted, and the IP header of the first protocol data unit is deleted, and the IP header is deleted according to an aggregation layer function of an aggregation layer entity mapped in the user equipment protocol stack and the radio bearer information.
  • the processor adds an IP header to a second protocol data unit generated according to an aggregation layer function of the user equipment protocol stack, where the IP header includes the second added by the processor according to location information
  • the radio bearer information corresponding to the protocol data unit, and the second protocol data unit to which the IP header is added is sent to the base station by using the WLAN AP through the IP tunnel, where the radio bearer information is used by the network interface.
  • the base station deletes the second protocol data unit of the IP header according to an aggregation layer function of an aggregation layer entity that is mapped to the radio bearer information in the base station protocol stack.
  • the location information is used to indicate a location of the radio bearer information in the IP header:
  • the processor is further configured to receive the location information sent by the base station by using the network interface, or agree with the user equipment to specify the location information according to a communication protocol.
  • the radio bearer information includes a radio bearer identifier or a logical channel identifier.
  • the IP header further includes priority information of the logical channel corresponding to the logical channel identifier, or The radio bearer identifies the priority information of the radio bearer corresponding to the radio bearer.
  • the processor is further configured to:
  • the aggregation layer includes any one of the following:
  • Packet Data Convergence Protocol PDCP layer Packet Data Convergence Protocol
  • media access control MAC layer media access control MAC layer
  • radio link control RLC layer IP layer.
  • the IP header of the first protocol data unit further includes a source IP address and a destination IP address, the source IP address is the first IP address, and the destination IP address is the second IP address;
  • the IP header of the second protocol data unit further includes a source IP address and a destination IP address, where The source IP address is the second IP address, and the destination IP address is the first IP address.
  • the processor is further configured to add the IP header to the The second protocol data unit performs integrity protection.
  • the embodiment of the invention provides a data transmission method and device.
  • the base station serves as a convergence point and a distribution point, and the base station is sensitive to the quality change of the network link of the wireless local area network, thereby ensuring service continuity and improving.
  • the user experience avoids the discontinuity of the service caused by the quality change of the network link of the WLAN when the EPC is used as the aggregation point and the distribution point.
  • FIG. 1 is a schematic diagram of a scenario of data transmission according to the present invention.
  • FIG. 2 is a schematic diagram showing a communication relationship between each protocol stack in a base station, a UE, and a WLAN AP according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram showing a configuration structure of each protocol stack in a base station, a UE, and a WLAN AP according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of an IPV4 header according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an IPV6 header according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a method for data transmission according to an embodiment of the present invention
  • FIG. 7 is a schematic flowchart of a method for data transmission according to still another embodiment of the present invention
  • FIG. 9 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a base station according to still another embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a user equipment according to still another embodiment of the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.
  • the technical solution of the present invention can be applied to various communication systems of a wireless cellular network, for example, a Global System of Mobile Communication (GSM) system, a Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access Wireless (WCDMA) system, General Packet Radio Service (GPRS) system, Long Term Evolution (LTE) system, Universal Mobile Telecommunications System ( Universal Mobile Telecommunications System, abbreviated as: UMTS), etc.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access Wireless
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • Universal Mobile Telecommunications System Universal Mobile Telecommunications System, abbreviated as: UMTS
  • UMTS Universal Mobile Telecommunications System
  • a user equipment may also be called a mobile terminal (Mobile Terminal), a mobile user equipment, etc., and may be accessed via a radio access network (for example, Radio Access Network, RAN for short).
  • the user equipment can be a mobile terminal, such as a mobile telephone (or "cellular" telephone) and a computer with a mobile terminal, for example, can be portable, pocket, handheld, computer built-in Or in-vehicle mobile devices that exchange language and/or data with the radio access network, which are not limited by the present invention.
  • the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (Node B) in WCDMA, or may be an evolved base station in LTE (eNB or e-Node B, evolved Node) B), the invention is not limited.
  • the base station also includes control nodes of various access network nodes, such as a radio network controller (Radio Network Controller, RNC for short) in UMTS, or a controller that manages multiple small base stations.
  • a radio network controller Radio Network Controller, RNC for short
  • RNC Radio Network Controller
  • a wireless local area network access point (WLAN AP) needs to be set, and the wireless local area network
  • the access point may be, for example, an access point in Wireless Fidelity (WiFi), which is not limited by the present invention.
  • the WLAN AP in the embodiment of the present invention has two network architectures: an autonomous management architecture and a centralized management architecture.
  • the autonomous management architecture is also called the "fat" AP architecture.
  • the WLAN AP is responsible for user equipment access, user equipment disconnection, rights authentication, security policy enforcement, data forwarding, data encryption, network management, etc., and autonomously controls the configuration of the WLAN AP. wireless function.
  • Centralized management architecture is also known as "thin" AP Architecture, management rights are generally concentrated on the wireless controller (Access Controller, AC for short). The AC manages the IP address, authentication, and encryption of the user equipment.
  • the WLAN AP only has encryption, data forwarding, and radio frequency functions, and cannot work independently.
  • the Control and Provisioning of Wireless Access Points (CAPWAP) specification protocol is adopted between the WLAN AP and the AC.
  • the foregoing WLAN AP may be integrated with the base station.
  • the embodiment of the present invention mainly relates to the data forwarding function of the WLAN AP, the two network architectures of the foregoing WLAN AP can be applied.
  • an autonomous management architecture that is, a "fat" AP architecture, and the present invention is not limited.
  • FIG. 1 is a schematic diagram of a data transmission scenario according to the present invention.
  • the scenario is for a multiple stream aggregation (MSA) communication method, and uses a traditional wireless communication between a base station and a UE and a wireless local area network between the WLAP and the UE.
  • the mutual integration of the communication provides a high-speed and stable service to the user equipment, wherein the communication between the base station and the WLAN AP is wired.
  • the base station can serve as a data distribution point and a convergence point.
  • IP internet protocol
  • the WLAN AP transmits data of the UE (including uplink data or downlink data). For example, an IP tunnel is established between the base station and the UE, and data transmitted in the IP tunnel is routed between the base station and the UE through the wireless local area network, and then the process is described in detail.
  • the above-mentioned uplink data or downlink data may be a protocol data unit (PDU) of a protocol layer in the air interface protocol stack of the wireless cellular network, which is not limited by the present invention.
  • PDU protocol data unit
  • the downlink data may include the first partial downlink data and the second partial downlink data.
  • the base station splits the first part of the downlink data to the WLAN AP, and then sends the data to the UE via the WLAN AP.
  • the second part of the downlink data is directly sent by the base station to the UE through the wireless cellular network, so that the transmission capability of the wireless cellular network and the WLAN network can be simultaneously utilized.
  • Higher UE downlink peak transmission rate is also used to the base station to the UE.
  • the uplink data may include the first part of the uplink data and the second part of the uplink data.
  • the UE offloads the first part of the uplink data to the WLAN AP, and then sends the uplink data to the base station via the WLAN AP.
  • the second part of the uplink data is directly sent by the UE to the base station through the wireless cellular network, so that the transmission capability of the wireless cellular network and the WLAN network can be simultaneously utilized. Higher UE uplink peak transmission rate.
  • the base station may transmit the data that needs to be offloaded to the WLAN AP, and send the data to the UE through the WLAN AP.
  • the UE may send the data that needs to be offloaded to the WLAN AP, and The data is sent to the base station. Therefore, in the embodiment of the present invention, a protocol stack for implementing communication between each other needs to be configured in the base station and the WLAN AP. Similarly, a protocol stack for implementing communication between each other needs to be configured in the UE and the WLAN AP.
  • FIG. 2 is a schematic diagram showing the communication relationship between each protocol stack in a base station, a UE, and a WLAN AP according to an embodiment of the present invention.
  • the communication between the base station and the UE may be performed by using an IP tunnel communication method (specifically, the base station and the UE transmit the offloaded data via the WLAN AP).
  • the wireless local area network communication mode is adopted between the UE and the WLAN AP.
  • a protocol stack for implementing the wireless local area network communication for example, a WiFi protocol stack, may be provided. Since the UE and the WLAN AP adopt a wireless local area network communication mode, the time-frequency resource used by the wireless local area network communication method is different from the time-frequency resource used by the wireless cellular network communication between the UE and the base station, thereby being capable of offloading data transmitted between the base station and the UE. .
  • the communication mode between the WLAN AP and the base station can be combined with the underlying protocols, such as optical network transmission, Ethernet transmission, Asymmetric Digital Subscriber Line (ADSL), and microwave relay, to implement WLAN. Communication between the AP and the base station.
  • underlying protocols such as optical network transmission, Ethernet transmission, Asymmetric Digital Subscriber Line (ADSL), and microwave relay
  • FIG. 3 is a schematic diagram showing a configuration structure of each protocol stack in a base station, a UE, and a WLAN AP according to an embodiment of the present invention. The following describes the configuration of the protocol stack in the base station, WLAN AP, and UE, respectively.
  • the base station has a base station protocol stack.
  • the base station protocol stack may have a first base station protocol stack and a second base station protocol stack, where the first base station protocol stack is used to implement data processing for communication with the user equipment on the base station side, where The second base station protocol stack is used to implement data processing for communication with the WLAN AP on the base station side.
  • the first base station protocol stack is only an exemplary description, and the present invention is not limited thereto.
  • Other protocol stacks capable of realizing communication between the base station and the user equipment on the base station (or the access network node) side are It falls within the scope of protection of the present invention.
  • the communication between the base station and the user equipment includes communication between the access network node and the user equipment capable of performing the function of the base station, for example, enabling communication between the relay node (RN) and the user equipment.
  • the protocol stack also falls into The scope of protection of the present invention.
  • the second base station protocol stack communication methods such as optical network transmission, Ethernet transmission, ADSL, and microwave relay can be used. It should be understood that the above communication manner is only an exemplary description, and the present invention is not limited thereto. Other protocol stacks capable of realizing communication between the WLAN AP and the base station on the base station side fall within the protection scope of the present invention.
  • the second base station protocol stack can be directly integrated on at least one protocol layer of the first base station protocol stack through an internal interface, which is not limited by the present invention.
  • the first base station protocol stack or the second base station protocol stack may include a user plane protocol stack, and may also include a user plane protocol stack and a control plane protocol stack, and the invention is not particularly limited.
  • the following takes the first base station protocol stack or the second base station protocol stack as a user plane protocol stack as an example for description.
  • the first base station protocol stack may include the following protocol layers:
  • the PDCP layer is mainly used for compressing and decompressing, encrypting and decrypting information.
  • the RLC layer is mainly used to implement related functions of Automatic Repeat Request (ARQ), segmenting and cascading or segmenting information. And the cascading information is reorganized;
  • the MAC layer is mainly used for selecting a transport format combination, implementing a related function of scheduling and hybrid automatic repeat request (HARQ);
  • the PHY layer is mainly used for the MAC layer and
  • the upper layer provides information transmission services, and performs code modulation processing or demodulation decoding processing according to the selected transmission format combination.
  • the PDCP layer of the first base station protocol stack is aggregated by the second base station protocol stack as an example, but the present invention does not limit this.
  • the second base station protocol stack may be associated with any of the PDCP layer, the RLC layer or the MAC layer of the first base station protocol stack, or even the IP layer above the PDCP layer. polymerization.
  • the protocol layer of the first base station protocol stack that aggregates the second base station protocol stack is referred to as an aggregation layer.
  • the aggregation layer of the base station protocol stack of this embodiment has the function of aggregating data and offloading data.
  • the aggregation layer may be used to aggregate uplink data transmitted by the user equipment between the WLAN AP and the base station and uplink data transmitted between the base station and the base station; or, for offloading: the aggregation layer may be used to offload the base station.
  • the aggregation layer can For: PDCP layer, RLC layer, MAC layer, or IP layer.
  • the corresponding aggregation layer entity may be a PDCP entity, an RLC entity, a MAC entity, or an IP entity, respectively.
  • the following takes the aggregation layer of the first base station protocol stack as an example:
  • the aggregation layer of the first base station protocol stack is used to aggregate the first part of the uplink data sent by the UE through the WLAN AP and the second part of the uplink data sent by the UE to the base station by using the wireless cellular network;
  • the aggregation layer of the first base station protocol stack is configured to split the data generated by the aggregation layer into the first part of the downlink data and the second part of the downlink data, and the base station processes the first part of the downlink data and sends the data to the UE through the WLAN AP, and the wireless cellular network is used. Sending a second part of downlink data to the UE.
  • the base station can obtain data from the core network and send it to the user equipment.
  • the base station can connect to the core network by using the S1 interface.
  • data can be obtained from the core network through the S1 interface, and then processed from the high to the low protocol layer through the first base station protocol stack until the aggregation layer of the first base station protocol stack.
  • the base station adds the IP header of the IP tunnel to the first part of the downlink data output by the aggregation layer, and then sends the IP header of the IP tunnel to the second base station protocol stack for processing.
  • the second base station protocol stack sends the processed first part of the downlink data to the WLAN AP, so that the base station
  • the WLAN AP may send the first part of downlink data to the UE in combination with the WLAN communication mode.
  • the first base station protocol stack may also send the second part of the downlink data to the UE through the wireless cellular network.
  • the UE aggregates the first part of the downlink data and the second part of the downlink data directly received from the cellular network in an aggregation layer of the first user equipment protocol stack, and delivers the data to the first part, for example, by reordering the data of the two parts.
  • the higher layer of the aggregation layer of a user equipment protocol stack (if the aggregation layer is not the highest layer of the first user equipment protocol stack).
  • the PHY/MAC/RLC/PDCP is sequentially incremented.
  • the base station obtains the downlink data from the S1 interface, generates the first part of the downlink data through the PDCP layer, and delivers the first part of the downlink data with the added IP header to the second base station protocol.
  • the stack processing is used by the second base station protocol stack to offload the first part of the downlink data to the WLAN AP.
  • the aggregation layer is an RLC
  • the base station obtains downlink data from the S1 interface, processes the data through the PDCP layer, and sends the data to the RLC layer.
  • the RLC layer generates a first part of downlink data, and hands the first part of the downlink data with the added IP header to the second base station protocol stack for the second base station protocol stack to offload the data to the WLAN AP.
  • the base station can receive the data sent by the user equipment and send the data to the core network as an example.
  • the base station can use the S1.
  • the interface is connected to the core network, and the WLAN AP can receive the first part of the uplink data that is sent by the UE and adds the IP header by using the WLAN communication mode. Subsequently, the WLAN AP can transmit the first part of the uplink data with the added IP header to the base station through the communication protocol between it and the base station.
  • the base station aggregates the first part of the uplink data of the IP header and the second part of the uplink data sent by the UE directly received from the wireless cellular network in the aggregation layer of the first base station protocol stack, for example, to weight the two parts of the data.
  • the higher layer of the aggregation layer of the first base station protocol stack is sent to the first base station protocol stack after processing (if the aggregation layer is not the highest layer of the first base station protocol stack), and then the higher layer sends the processed data to the core network through the S1 interface.
  • the first base station protocol stack is the LTE protocol stack as an example, and the PHY/MAC/RLC/PDCP is sequentially incremented.
  • the aggregation layer is the PDCP layer
  • the PDCP layer uplinks the data to the first part and directly from the wireless.
  • the second part of the uplink data received by the cellular network is aggregated, and the base station sends the uplink data to the core network through the S1 interface.
  • the RLC layer aggregates and processes the first part of the uplink data and the second part of the uplink data directly received from the wireless cellular network, and then delivers the data to the PDCP layer, and the PDCP layer processes the data through the S1 interface through the base station. Send to the core network.
  • the following describes the configuration of the protocol stack in the WLAN AP.
  • the WLAN AP has a WLAN AP protocol stack.
  • the WLAN AP protocol stack may have a first WLAN AP protocol stack and a second WLAN AP protocol stack.
  • the first WLAN AP protocol stack is configured to implement data processing for communication with the base station on the WLAN AP side
  • the second WLAN AP protocol stack is configured to implement data processing for communication with the user equipment on the WLAN AP side.
  • the first WLAN AP protocol stack communication methods such as optical network transmission, Ethernet transmission, ADSL, and microwave relay can be used. It should be understood that the foregoing communication manner is only an exemplary description, and the present invention is not limited thereto. Other protocol stacks capable of implementing communication between the WLAN AP and the base station on the WLAN AP side fall within the protection scope of the present invention.
  • the first WLAN AP protocol stack may include a user plane protocol stack, and may also include a user plane protocol stack and a control plane protocol stack, and the present invention is not particularly limited. The following uses the first WLAN AP protocol stack as a user plane protocol stack as an example for description.
  • a protocol stack for implementing the wireless local area network communication for example, a WiFi protocol stack
  • a WiFi protocol stack may be cited.
  • the WiFi protocol stack is merely exemplary, and the present invention is not limited thereto, and other can be in a WLAN AP (or a wireless local area network access node).
  • the protocol stack that implements the communication between the WLAN AP and the user equipment on the side falls within the protection scope of the present invention.
  • the WiFi protocol stack may include: a Logical Link Control (LLC) layer, and a Media Access Control (MAC). ) Layer, Physical Layer (PHY).
  • LLC Logical Link Control
  • MAC Media Access Control
  • PHY Physical Layer
  • the main functions of the LLC layer are transmission reliability guarantee and control, packet segmentation and reassembly, and sequential transmission of data packets.
  • the main function of the MAC layer is to provide users with reliable data transmission on unreliable media, providing distributed coordination functions, centralized control access mechanisms, and encryption services, listening and avoidance, and power control.
  • the main function of the PHY layer is to perform a physical layer aggregation process to map data blocks to an appropriate physical frame format for code modulation processing or demodulation decoding processing.
  • the WLAN AP obtains data from the base station and sends the data to the user equipment.
  • the WLAN AP can obtain data that the base station needs to send to the UE through the first WLAN AP protocol stack. Subsequently, the WLAN AP can transmit the data to the UE through wireless local area network communication, and then the process is described in detail.
  • the WLAN AP obtains data from the user equipment and sends the data to the base station.
  • the WLAN AP can obtain data that the UE needs to send to the base station by using the WLAN communication mode. Subsequently, the WLAN AP can transmit the data to the base station through the first WLAN AP protocol stack, and then the process is described in detail.
  • the user equipment has a user equipment protocol stack.
  • the user equipment protocol stack has a first user equipment protocol stack and a second user equipment protocol stack, where the first user equipment protocol stack is used in the The user equipment side implements data processing for communication with the base station.
  • the second user equipment protocol stack is configured to implement data processing for communication with the WLAN AP on the user equipment side.
  • the second user equipment protocol stack is connected to at least one protocol layer of the first user equipment protocol stack.
  • the first user equipment protocol stack is only an exemplary description, and the present invention is not limited thereto.
  • Other protocol stacks capable of realizing communication between the base station and the user equipment on the user equipment side fall within the protection scope of the present invention.
  • the communication between the base station and the user equipment includes communication between the access network node capable of performing the function of the base station and the user equipment.
  • a user equipment protocol stack capable of implementing communication between a relay node (RN) and a user equipment also falls within the scope of the present invention. As shown in FIG.
  • the foregoing first user equipment protocol stack may include the following protocol layers: a Packet Data Convergence Protocol (PDCP) layer, and a Radio Link Control (Radio Link Control). RLC) layer, Media Access Control (MAC) layer and Physical (Physical, PHY for short) layer.
  • the PDCP layer is mainly used for compressing and decompressing/encrypting and decrypting information.
  • the RLC layer is mainly used to implement related functions of Automatic Repeat Request (ARQ), segmenting and cascading or segmenting information.
  • ARQ Automatic Repeat Request
  • the cascading information is reorganized;
  • the MAC layer is mainly used for selecting a transport format combination, implementing a related function of scheduling and hybrid automatic repeat request (HARQ);
  • the PHY layer is mainly used for the MAC layer and
  • the upper layer provides information transmission services, and performs code modulation processing or demodulation decoding processing according to the selected transmission format combination.
  • a protocol stack for implementing wireless local area network communication for example, a WiFi protocol stack
  • WiFi protocol stack is only an exemplary description, and the present invention is not limited thereto.
  • Other protocol stacks capable of implementing communication between the WLAN AP and the user equipment on the user equipment side are all within the scope of the present invention.
  • the WiFi protocol stack may include: a logical link control LLC layer, a media access control MAC layer, and a physical layer PHY.
  • the main functions of the LLC layer are transmission reliability guarantee and control, packet segmentation and reassembly, and sequential transmission of data packets.
  • the main function of the MAC layer is to provide users with reliable data transmission on unreliable media, providing distributed coordination functions, centralized control access mechanisms, and encryption services, interception and avoidance, and power control.
  • the main function of the physical layer is to perform a physical layer aggregation process to map data blocks to a suitable physical frame format for code modulation processing or demodulation decoding processing.
  • the PDCP layer of the first user equipment protocol stack is aggregated by using the second user equipment protocol stack as an example, but the present invention does not limit this.
  • the second user equipment protocol stack may be associated with any of the PDCP layer, the RLC layer or the MAC layer of the first user equipment protocol stack, or even the IP layer above the PDCP layer. polymerization.
  • the protocol layer of the first user equipment protocol stack that aggregates the second user equipment protocol stack is referred to as an aggregation layer of the user equipment protocol stack.
  • the aggregation layer of the user equipment protocol stack of this embodiment has the function of aggregating data and offloading data.
  • the aggregation layer may be used to aggregate downlink data transmitted by the base station between the WLAN AP and the user equipment and downlink data transmitted between the user equipment through the wireless cellular network; or, for offloading: the aggregation layer may be used to offload the User setting The uplink data transmitted between the WLAN AP and the base station, and the uplink data transmitted between the wireless cellular network and the base station.
  • the aggregation layer may be: a PDCP layer, an RLC layer, a MAC layer, or an IP layer.
  • the corresponding aggregation layer entity may be a PDCP entity, an RLC entity, a MAC entity, or an IP entity, respectively.
  • the following takes the aggregation layer of the first user equipment protocol stack as an example:
  • the aggregation layer of the first user equipment protocol stack is configured to offload the data generated by the aggregation layer into the first part of the uplink data and the second part of the uplink data, and the UE processes the first part of the uplink data and sends the data to the UE through the WLAN AP. And transmitting the second part of the uplink data to the base station through the wireless cellular network.
  • the aggregation layer of the first user equipment protocol stack is used to aggregate the first part of downlink data sent by the base station through the WLAN AP and the second part of downlink data sent by the base station through the wireless cellular network. The details will be described below.
  • the UE may send data to the base station through the WLAN AP.
  • the UE may process the data from the high to the low protocol layer through the first user equipment protocol stack until the aggregation layer of the first user equipment.
  • the user equipment adds the IP header of the IP tunnel to the first part of the uplink data that is processed by the aggregation layer
  • the user equipment is processed by the second user equipment protocol stack and sent to the WLAN AP via the second user equipment protocol stack, and the WLAN AP is used for the WLAN AP.
  • the first part of the uplink data is sent to the base station.
  • the user equipment sends the second part of the uplink data output by the aggregation layer to the base station through the wireless cellular network.
  • the base station aggregates the first part of the uplink data and the second part of the uplink data directly received from the wireless cellular network in an aggregation layer of the first base station protocol stack, and processes the same to the higher layer of the aggregation layer of the first base station protocol stack ( If the aggregation layer is not the highest layer of the first base station protocol stack).
  • the specific embodiment is similar to the base station side, and details are not described herein again.
  • the UE may receive the data sent by the WLAN AP through the WLAN AP, and the UE may receive the first part of the downlink data sent by the WLAN AP by using the wireless local area network communication mode.
  • the UE aggregates the first part of the downlink data of the deleted IP header and the second part of the downlink data directly received from the wireless cellular network at the aggregation layer of the first user equipment protocol stack, and then delivers the downlink data to the first user equipment protocol stack.
  • the higher layer of the aggregation layer (if the aggregation layer is not the highest layer of the first base station protocol stack).
  • the specific embodiment is similar to the base station side, and details are not described herein again.
  • Protocol data unit In the communication system, the data transmitted between two adjacent protocol layers is called the higher layer in the adjacent protocol layer. Protocol data unit (PDU). Taking the LTE protocol stack as an example, the data that the PDCP layer delivers to the RLC layer after being subjected to header compression, encryption, and the like is called a PDCP PDU.
  • PDU Protocol data unit
  • the RLC receives the data submitted by the MAC layer and reassembles and reorders the data, and the data unit that is delivered to the PDCP is also called the PDCP PDU.
  • the first part of the downlink protocol data unit that is output to the aggregation layer of the first base station protocol stack is called the first protocol data unit, and is on the user equipment side, in order to facilitate the detailed description of the process of performing the offloading by the WLAN AP.
  • the first portion of the uplink protocol data unit for the aggregate layer output of the first user equipment protocol stack is referred to as the second protocol data unit.
  • the IP header may include a source address, a destination address, and radio bearer information.
  • the source address and the destination address may be used to determine an IP tunnel between the UE and the base station. Therefore, the protocol data unit to which the IP header is added can be transmitted in an IP tunnel determined by the source address and the destination address.
  • the radio bearer information is used to indicate the radio bearer to which the protocol data unit belongs.
  • the aggregation layer For each radio bearer, the aggregation layer generates an aggregation layer entity to be responsible for the processing of the radio bearer in the aggregation layer.
  • the aggregation layer entity completes the function defined by the aggregation layer.
  • the aggregation layer entity can complete the aggregation data defined by the aggregation layer. The function of shunting data.
  • the radio bearer information may include a radio bearer identifier or a logical channel identifier.
  • the radio bearer information is a logical channel identifier
  • the IP tunnel receiving end for example, when the uplink transmission is performed, the IP tunnel receiving end is a base station; and when the downlink transmission is performed, the IP tunnel is used.
  • the receiving end is a user equipment.
  • the radio bearer identifier can be known according to the logical channel identifier. Taking the aggregation layer as the PDCP layer as an example, the radio bearer corresponding to the radio bearer identifier has a mapping relationship with the PDCP layer. Specifically, the radio bearer has a corresponding relationship with the PDCP entity of the PDCP layer. gP, each PDCP entity corresponds to one radio bearer, and the number of PDCP entities is determined by the number of established radio bearers.
  • Location information used to indicate the location of the radio bearer information corresponding to the aggregation layer protocol data unit in the IP header.
  • the location information of the radio bearer information in the IP header may be pre-defined by the user equipment and the base station according to the communication protocol (for example, the user equipment may be agreed according to the protocol). Obtaining location information) may also be sent by the base station to the user equipment.
  • the location information is used to indicate the location of the first radio bearer information corresponding to the first protocol data unit in the IP header of the first protocol data unit.
  • the first radio bearer information is used to indicate a radio bearer to which the first protocol data unit belongs, and includes a first radio bearer identifier or a first logical channel identifier.
  • the UE can learn the first radio bearer identifier according to the first logical channel identifier, because the logical channel has a mapping relationship with the radio bearer.
  • the location information is used to indicate the location of the second radio bearer information corresponding to the second protocol data unit in the IP header of the second protocol data unit.
  • the second radio bearer information is used to indicate a radio bearer to which the second protocol data unit belongs, and includes a second radio bearer identifier or a second logical channel identifier.
  • the base station can learn the second radio bearer identifier according to the second logical channel identifier, because the logical channel has a mapping relationship with the radio bearer.
  • the IP header may further include priority information of the logical channel corresponding to the logical channel identifier, or priority information of the radio bearer corresponding to the radio bearer identifier.
  • the priority information may be represented by a Differentiated Services Code Point (DSCP).
  • the DSCP can be located in the Type of Service (T0S) byte of the IP header.
  • T0S Type of Service
  • the 6-bit can be used to distinguish the priority order of data transmission by using the encoded value.
  • the WLAN AP supports the transmission of Quality of Service (QoS) during the data transmission through the WiFi protocol stack
  • QoS Quality of Service
  • the user equipment that also supports QoS will access the WLAN and the WLAN.
  • the AP negotiates QoS parameters.
  • the user equipment reports to the base station whether the WLAN AP supports QoS transmission.
  • the base station When the WLAN AP supports QoS downlink transmission, the base station fills in the DSCP in the IP header according to the priority of the logical channel where the first protocol data unit is located or the priority of the radio bearer.
  • the mapping relationship between the priority of the radio bearer or the logical channel and the DSCP value may be agreed in advance by a protocol.
  • the DSCP value in the IP header is mapped to the user priority of the MAC layer in the WiFi protocol stack.
  • the WLAN AP After receiving the first protocol data unit sent by the base station, the WLAN AP puts the first protocol data unit into the sending buffer corresponding to the user priority according to the DSCP value in the IP header, and the data in the sending buffer of different user priorities. Have different scheduling priorities.
  • the UE fills in the DSCP in the IP header according to the radio bearer priority of the second protocol data unit or the priority of the logical channel.
  • the mapping relationship between the priority of the radio bearer or the logical channel and the DSCP value may be agreed in advance by a protocol.
  • the DSCP value in the IP header is mapped to the user priority of the MAC layer in the WiFi protocol stack.
  • the WLAN AP puts the second protocol data unit into the sending buffer corresponding to the user priority according to the DSCP value in the IP header, and the data in the sending buffer of different user priorities. Have different scheduling priorities.
  • FIG. 4 is a schematic diagram of an IPV4 header according to an embodiment of the present invention.
  • the IPV4 header can include a source address, a destination address, radio bearer information, and DSCP.
  • the radio bearer information may be sent according to a protocol agreement or a base station, and is located in a field such as "version", "length” or "service type” in the IP header; the DSCP may be located in a service type (ToS) field of the IP header.
  • This IPV4 is used to identify the version number of the adopted IP protocol.
  • FIG. 5 is a schematic diagram of an IPV6 header according to an embodiment of the present invention.
  • the IPV6 header can include source address, destination address, radio bearer information, and DSCP.
  • the radio bearer information is located in a field such as a "version” or a "streaming tag" in the IP header; the DSCP may be located in a traffic class (Traffic Class) field of the IP header.
  • This IPV6 is used to identify the version number of the adopted IP protocol.
  • the downlink data and the uplink data may also be processed as follows.
  • the downlink data can be directly transmitted to the UE by the wireless cellular network, it can also be transmitted via the WLAN.
  • the AP network transmits to the UE, and when the quality of service (QoS) of the data packets in the first part of the downlink data transmitted by the WLAN network cannot meet the requirements, the standby WLAN AP may be used, or the first part may be downlinked.
  • QoS quality of service
  • a number of data packets in the data are switched to the wireless cellular network, or a mechanism to reduce the amount of data of downlink data that is offloaded to the WLAN AP to ensure QoS of the radio bearers.
  • the uplink data can be transmitted from the wireless cellular network to the base station or from the WLAN network to the base station.
  • the quality of service Quality of Service, QoS for short
  • the standby WLAN AP may be used, or a number of data packets in the first part of the uplink data may be switched to the wireless cellular network, or a data amount of uplink data that is offloaded to the WLAN AP may be reduced to ensure QoS of the radio bearer.
  • FIG. 6 shows a schematic flow chart of a method of data transmission according to an embodiment of the present invention, which is performed by a base station in a communication system.
  • the communication system further includes a WLAN AP and a user equipment, and the base station and the user equipment are provided with an IP tunnel via the WLAN AP.
  • the method includes:
  • the base station sends the request information to the user equipment, the identifier of the WLAN AP of the WLAN access point, and the first IP address of the base station, where the request information is used to request the user equipment to perform multi-stream aggregation data transmission with the base station via the WLAN AP.
  • the base station receives the acknowledgement information sent by the user equipment and the second IP address that the WLAN AP allocates to the user equipment, where the acknowledgement information is used to confirm that the user equipment performs multi-stream aggregation data transmission with the base station via the WLAN AP.
  • the base station performs multi-stream aggregation data transmission with the user equipment by using the WLAN AP, and the IP tunnel is determined by the first IP address and the second IP address.
  • the base station when the base station determines to perform offloading by using the WLAN AP, the base station sends the request information, the identifier of the WLAN AP, and the first IP address of the base station to the UE.
  • the base station determines to pass the WLAN
  • the splitting of the AP includes the following possible implementations:
  • a possible implementation manner is: the base station instructs the UE to perform measurement on the WLAN AP and report the measurement result to the base station according to the subscription information of the UE. Then, the base station determines to perform offloading through the WLAN AP according to the measurement result (for example, the UE measures that the WiFi network signal corresponding to the WLAN AP is strong).
  • the base station determines to perform offloading through the WLAN AP according to the network load and the distribution of the WLAN AP (for example, a WLAN AP is distributed in an area where the network is heavily loaded).
  • the request information sent by the base station to the user equipment, the identifier of the WLAN AP, and the first IP address of the base station may be carried in various messages sent by the base station to the user equipment.
  • the request message, the identifier of the WLAN AP, and the first IP address of the base station may be carried in the same message, or the request information, the identifier of the WLAN AP, and the first IP address of the base station may be multiple.
  • the message is carried.
  • the number and type of messages carrying the request information, the identifier of the WLAN AP, and the first IP address of the base station are not limited, and the sequence of sending the different messages is not limited.
  • the identifier of the WLAN AP may be a Basic Service Set Identifier (BSSID) of the WLAN AP or a Service Set identifier (Service Set) Identifier, referred to as SSID).
  • BSSID Basic Service Set Identifier
  • SSID Service Set Identifier
  • a basic service set is a basic component of a WLAN network, and is usually composed of one access point AP and multiple stations (Stations, referred to as STAs).
  • the Extended Service Set (ESS) is composed of multiple BSSs.
  • Each BSS has a unique identifier (ID), g ⁇ BSS ID or BSS ID. Since the BSS usually has an access point AP, the BSS identifier is usually the identifier of the AP of the access point, and may be, for example, a Media Access Control (MAC) address of the AP.
  • ID unique identifier
  • MAC Media Access Control
  • the network side service device is an AP
  • the user side terminal device is a STA
  • the network side service device is a base station
  • the user side terminal device is a UE.
  • the user-side terminal device may be referred to as a UE or a STA, and can receive services of two networks.
  • the following is collectively referred to as a UE.
  • the UE sends an authentication request to the WLAN AP according to the identifier of the WLAN AP. After the authentication is passed, the UE sends the acknowledgement information to the base station and the second IP address allocated by the WLAN AP to the user equipment.
  • the second IP address sent by the UE to the base station is an IP address allocated by the WLAN AP for multi-stream aggregation.
  • the WLAN AP delivers data sent by the UE from the second IP address to the base station for aggregation.
  • the WLAN AP transmits the data sent by the base station whose destination address is the second IP address to the UE for aggregation.
  • the data transmission of the multi-stream aggregation by the base station and the UE through the IP tunnel and the WLAN AP may include uplink data transmission and downlink data transmission.
  • uplink data and downlink data are collectively referred to as protocol data units, but the present invention does not limit this.
  • the base station adds an IP header to the first protocol data unit generated by the aggregation layer of the base station protocol stack, and the first protocol data unit added with the IP header passes the IP tunnel,
  • the WLAN AP sends to the UE.
  • the base station protocol stack can be the first base station protocol stack.
  • the source address in the IP header added to the first protocol data unit is a first IP address
  • the destination address is a second IP address
  • the foregoing IP header includes radio bearer information corresponding to the first protocol data unit added by the base station according to the location information, where the radio bearer information is used by the user equipment to indicate that the aggregation layer entity mapped in the user equipment protocol stack and the radio bearer information is deleted.
  • the aggregation layer may include an aggregation layer entity, and the aggregation layer entity has a one-to-one correspondence with the radio bearer information or corresponds to the designated logical channel. Therefore, the radio bearer information can be used to indicate that the aggregation layer entity that is mapped with the radio bearer information in the user equipment protocol stack processes the first protocol data unit that deletes the IP header.
  • the base station sends a first protocol data unit to which the IP header is added to the WLAN AP.
  • the WLAN AP obtains the destination address in the IP header, that is, the WLAN AP.
  • the second IP address assigned by the UE Because the second IP address is mapped to the address of the UE, the WLAN AP may determine the address of the UE, such as the MAC address, according to the second IP address, and send the first protocol data unit to the UE by using the WiFi protocol. Therefore, for the WLAN AP, the first protocol data unit with the IP header does not need to be specially processed, and the processing can be performed according to the WiFi protocol stack, so that the WLAN AP itself does not need to be improved.
  • the foregoing special processing may be understood as: when the protocol stack of the WLAN AP is changed, for example, when the WiFi protocol stack is not used, the processing performed by the WLAN AP on the first protocol data unit with the IP header includes but is not limited to mapping, conversion, etc., and is different from The processing method of the WiFi protocol stack; or the WLAN AP needs to process the first protocol data unit with the IP header according to the indication agreed with the base station.
  • the base station receives, by using the IP tunnel, a second protocol data unit sent by the user equipment by using the WLAN AP, deleting an IP header of the second protocol data unit, and indicating the base station protocol.
  • the aggregation layer processing of the stack deletes the second protocol data unit of the IP header, where the IP header is added by the user equipment to the second protocol data unit generated by the aggregation layer of the user equipment protocol stack.
  • the base station protocol stack can be a first base station protocol stack.
  • the source address in the IP header of the second protocol data unit is a second IP address
  • the destination address is a first IP address
  • the base station obtains the second protocol data unit sent by the user equipment by using the WLAN AP, and obtains the radio bearer information corresponding to the second protocol data unit from the IP header of the second protocol data unit according to the location information.
  • the IP header of the second protocol data unit is deleted, and the aggregation layer entity in the base station protocol stack mapped with the radio bearer information is processed to process the second protocol data unit with the IP header deleted.
  • the polymer layer may include a polymer layer
  • the aggregation layer entity has a one-to-one correspondence with the radio bearer information or corresponds to the designated logical channel. Therefore, the radio bearer information may be used to indicate that the aggregation layer entity that is mapped with the radio bearer information in the base station protocol stack processes the first protocol data unit that has deleted the IP header.
  • the UE sends a second protocol data unit with an IP header added to the WLAN AP.
  • the WLAN AP sends the base station to the UE according to the destination address in the IP header.
  • the first IP address of the transmitted base station may directly forward the second protocol data unit to the base station.
  • the base station performs a distinguishing process on the protocol data unit that is offloaded by the WLAN AP.
  • One way is: When the destination address in the IP header of the WLAN AP transmitting data to the base station is not the first IP address of the base station, the base station transmits the data to the Internet, for example, to the router or various servers indicated by the destination address.
  • the above data may be signaling such as WiFi only data or WiFi authentication.
  • the other way is: when the destination address in the IP header of the data sent by the WLAN AP to the base station is the first IP address of the base station, the IP header of the data is deleted, and the aggregation layer processing of the base station protocol stack is instructed to delete the IP header.
  • the data is: when the destination address in the IP header of the data sent by the WLAN AP to the base station is the first IP address of the base station, the IP header of the data is deleted, and the aggregation layer processing of the base station protocol stack is instructed to delete the IP header. The data.
  • the aggregation layer of the foregoing base station protocol stack is configured to offload the first protocol data unit and the protocol data unit that the base station transmits to the user equipment by using the wireless cellular network; or, the second protocol data unit that deletes the IP header is A protocol data unit transmitted by a user equipment to a base station over a wireless cellular network.
  • the data transmission method provided by the embodiment of the present invention is used by the base station as a convergence point and a distribution point.
  • the base station is sensitive to the quality change of the network link of the wireless local area network, ensures service continuity, improves user experience, and avoids EPC as a convergence point and a split point. When the point is not, the service is not sensitive to the quality change of the network link of the WLAN.
  • FIG. 7 is a schematic flowchart of a method for data transmission according to still another embodiment of the present invention.
  • the method is performed by a user equipment in a communication system, where the communication system further includes a base station and a WLAN AP, and the base station and the user equipment An IP tunnel is provided via the WLAN AP.
  • the method includes:
  • the user equipment receives the request information sent by the base station, the identifier of the WLAN AP of the WLAN access point, and the first IP address of the base station, where the request information is used to request the user equipment to perform multi-stream aggregation data transmission with the base station via the WLAN AP.
  • the user equipment sends an acknowledgement message to the base station and a WLAN AP allocates the user equipment.
  • the second IP address, the acknowledgement information is used to confirm that the user equipment performs multi-stream aggregation data transmission with the base station via the WLAN AP;
  • the user equipment performs data transmission of the multi-stream aggregation with the base station by using the WLAN AP through the IP tunnel, where the IP tunnel is determined by the first IP address and the second IP address.
  • the UE accesses the WLAN AP according to the communication protocol.
  • the UE discovers the WLAN AP corresponding to the identifier of the WLAN AP by listening to a beacon frame or sending a Probe frame, and accesses the WLAN AP.
  • the method for the UE to access the WLAN AP for example, the authentication and association with the WLAN AP, and the authentication process are not limited by the present invention.
  • the base station sends the request information to the UE
  • the UE sends the acknowledgment information to the eNB
  • the second protocol data unit the UE The second protocol data unit to which the IP header is added is transmitted to the WLAN AP.
  • the WLAN AP After receiving the second protocol data unit with the IP header added, the WLAN AP directly forwards the second protocol data unit to the base station according to the destination address in the IP header, that is, the first IP address of the base station sent by the base station to the UE.
  • the second protocol data unit to which the IP header is added does not need to be specially processed (that is, processed as a normal IP packet), and the WLAN AP itself does not need to be improved.
  • the costs incurred by the UE in communicating between the wireless cellular network and the wireless local area network are uniformly calculated by the base station or the core network device of the mobile communication network.
  • the authentication server also calculates the fee generated by the UE during the wireless communication process.
  • the authentication server is an important part of the wireless communication system. It can also be called AAA (English for Authentication, Authorization, Accounting; Chinese for authentication, authorization, and accounting). For example, it has a server program that can handle user access requests. Its main functions are, for example: for managing which users can access the WLAN network or gain access, what services are available to users with access rights, and how to account for users who are using network resources.
  • the method can be implemented as follows: Mode 1: Performing SAE (Simultaneous authentication of equals) or PSK (Pre-shared Key) authentication between the UE and the WLAN AP.
  • SAE Simultaneous authentication of equals
  • PSK Pre-shared Key
  • the base station operates The operation key (OAM) and other methods obtain the initial key and notify the UE of the initial key.
  • OAM operation key
  • the UE and the WLAN AP perform authentication and key derivation through the initial key, that is, authentication can be realized without interacting with the authentication server.
  • Manner 2 Perform Extensible Authentication Protocol - Authentication and Key Agreement (CE-APA) authentication between the UE and the WLAN AP.
  • the authentication is implemented by the authentication server.
  • the base station or the UE determines to perform offloading through the WLAN AP
  • the base station or the UE instructs the authentication server not to charge the fee generated by the UE during the wireless communication process.
  • the base station or the UE sends an indication message to the authentication server, where the indication message includes an identifier of the UE, and is used to indicate that the authentication server does not charge the fee generated by the UE corresponding to the identifier of the UE in the wireless pass process.
  • Manner 3 The base station proxy authentication server, that is, the base station has the function of an authentication server. At the same time, EAP-AKA authentication is performed between the UE and the base station.
  • the UE after receiving the first protocol data unit sent by the base station by using the WLAN AP, the UE deletes the IP header of the first protocol data unit, and indicates the user equipment protocol stack.
  • the aggregation layer process deletes the first protocol data unit of the IP header, where the IP header is added by the base station to the protocol data unit generated by the aggregation layer of the base station protocol stack.
  • the user equipment protocol stack can be a first user equipment protocol stack.
  • the source address in the IP header added to the first protocol data unit is a first IP address
  • the destination address is a second IP address
  • the user equipment receives the first protocol data unit that is sent by the base station by using the WLAN AP through the IP tunnel, and obtains the radio bearer information corresponding to the first protocol data unit from the IP header of the first protocol data unit according to the location information, and deletes the An IP header of the protocol data unit, and indicating that the aggregation layer entity mapped in the user equipment protocol stack and the radio bearer information is deleted.
  • the aggregation layer may include an aggregation layer entity, and the aggregation layer entity has a one-to-one correspondence with the radio bearer information or corresponds to the designated logical channel. Therefore, the radio bearer information can be used to indicate that the aggregation layer entity mapped with the radio bearer information in the user equipment protocol stack processes the first protocol data unit that deletes the IP header.
  • the base station sends the first protocol data unit with the added IP header to the WLAN AP through the IP tunnel, and after receiving the first protocol data unit with the added IP header, the WLAN AP according to the destination address in the IP header The second IP address assigned by the WLAN AP to the UE. Determining the MAC address of the UE, and offloading the first protocol data unit with the IP header to the UE through the WiFi protocol. Therefore, for the WLAN AP, the first protocol data unit with the IP header is not required to be specially processed, and the WLAN AP itself There is no need to make improvements.
  • the UE After receiving the first protocol data unit with the IP header added by the WLAN AP, the UE deletes the IP header of the first protocol data unit, and indicates that the aggregation layer of the first user equipment protocol stack processes the first protocol that deletes the IP header. Data unit.
  • the user equipment distinguishes the data that is offloaded by the WLAN AP. For the data whose IP destination address is not the second IP address of the user equipment, the user equipment does not hand it over to the aggregation layer of the first user equipment protocol stack for processing.
  • the UE adds an IP header to the second protocol data unit generated by the aggregation layer of the user equipment protocol stack, and adds the second protocol data unit to which the IP header is added.
  • the IP tunnel is sent to the base station via the WLAN AP.
  • the source address in the IP header added to the second protocol data unit is a second IP address
  • the destination address is a first IP address
  • the IP header includes radio bearer information corresponding to the second protocol data unit added by the user equipment according to the location information, where the radio bearer information is used by the base station to indicate that the aggregation layer entity mapped to the radio bearer information in the base station protocol stack is deleted.
  • the second protocol data unit of the IP header may include an aggregation layer entity, and the aggregation layer entity has a one-to-one correspondence with the radio bearer information or corresponds to the designated logical channel. Therefore, the radio bearer information can be used to indicate that the aggregation layer entity mapped with the radio bearer information in the base station protocol stack processes the second protocol data unit with the IP header deleted.
  • the aggregation layer of the foregoing user equipment protocol stack is configured to: split the second protocol data unit and a protocol data unit that is sent by the user equipment to the base station by using a wireless cellular network; or aggregate the deleted IP header. a first protocol data unit and a protocol data unit transmitted by the base station to the user equipment over a wireless cellular network.
  • the base station serves as a convergence point and a distribution point, and the base station is sensitive to the quality change of the network link of the wireless local area network, ensures service continuity, improves user experience, and avoids
  • EPC is used as a convergence point and a distribution point, the service is not sensitive to the quality change of the network link of the WLAN.
  • the following takes the PDCP layer as an aggregation layer as an example, and the embodiment shown in FIG. 6 to FIG. 7 is described in detail in conjunction with the protocol stack shown in FIG. 3.
  • the following mainly describes the transmission process of the base station to downlink the downlink data to the UE through the WLAN AP through the IP tunnel.
  • the base station adds an IP header to the first protocol data unit of the PDCP layer of the first base station protocol stack, where the IP header includes the first radio bearer information corresponding to the first protocol data unit added by the base station according to the location information, and the source address in the IP header is The first IP address, and the destination address is the second IP address. Then, the base station transmits the first protocol data unit added with the IP header to the L1 layer and the L1 layer of the second base station protocol stack, and transmits the L1 layer of the first WLAN AP protocol stack of the WLAN AP to the L1 layer of the first WLAN AP protocol stack, and then the first WLAN AP protocol stack. After processing by the L1 and L2 layers, the first protocol data unit to which the IP header is added is restored, and is handed over to the second WLAN AP protocol stack for processing.
  • the second WLAN AP protocol stack adds an LLC header to the obtained first protocol data unit to which the IP header is added to implement the traffic control function, and then determines whether the destination address is the WLAN AP allocated to the UE according to the destination address in the IP header.
  • Two IP addresses When it is determined that the destination address is the second IP address, the MAC layer of the second WLAN AP protocol stack adds a MAC header to the first protocol data unit added with the IP header to implement scheduling addressing, QoS, and the like, and generates
  • the MAC Protocol Data Unit (MPDU) is then transmitted to the PHY layer of the second user equipment protocol stack of the UE through the PHY layer of the second WLAN AP protocol stack.
  • MPDU MAC Protocol Data Unit
  • the PHY layer of the second user equipment protocol stack of the UE deletes the MAC header and the LLC header in sequence through the MAC layer and the LLC layer of the second user equipment protocol stack, and obtains the first protocol data unit to which the IP header is added. Then, the UE determines, according to the source IP address in the IP header, whether the first protocol data unit is data transmitted from the first IP address of the base station, that is, whether the data is transmitted through the IP tunnel. When the UE determines that the first protocol data unit is data transmitted through the IP tunnel, deleting the IP header in the first protocol data unit, and acquiring the first protocol data from the IP header in the first protocol data unit according to the location information.
  • the first radio bearer information corresponding to the unit and indicates that the PDCP entity corresponding to the first radio bearer information in the PDCP layer of the first user equipment protocol stack processes the first protocol data unit that deletes the IP header.
  • the UE adds an IP header to the second protocol data unit of the PDCP layer of the first user equipment protocol stack, where the IP header includes a second radio bearer corresponding to the second protocol data unit added by the UE according to the location information.
  • the source address in the IP header is the second IP address
  • the destination address is the first IP address.
  • the second user equipment protocol stack of the UE adds an LLC header to the first protocol data unit to which the IP header is added, and the MAC layer of the second user equipment protocol stack of the UE adds the second protocol data unit according to the destination address in the IP header.
  • the MAC header generates a MAC Protocol Data Unit (MPDU), and then transmits the PHY layer of the second WLAN AP protocol stack of the WLAN AP through the PHY layer of the second user equipment protocol stack.
  • MPDU MAC Protocol Data Unit
  • the PHY layer of the second WLAN AP protocol stack of the WLAN AP sequentially deletes the MAC header and the LLC header through the MAC layer and the LLC layer of the second WLAN AP protocol stack, and obtains the second protocol data unit with the added IP header. Then, the WLAN AP transmits the second protocol data unit added with the IP header to the L1 layer and the L2 layer of the second base station protocol stack of the base station through the L2 layer and the L1 layer of the first WLAN AP protocol stack. Then, the base station determines, according to the source IP address in the IP header, whether the second protocol data unit to which the IP header is added is data transmitted from the second IP address, that is, whether the data is transmitted through the IP tunnel.
  • the base station determines that the second protocol data unit to which the IP header is added is the data transmitted through the IP tunnel, deleting the IP header, acquiring the second radio bearer information corresponding to the second protocol data unit from the IP header according to the location information, and indicating The PDCP entity corresponding to the second radio bearer information in the PDCP layer in the first base station protocol stack processes the second protocol data unit in which the IP header is deleted.
  • the method further includes:
  • the base station performs integrity protection on the first protocol data unit to which the IP header is added.
  • the UE side is vulnerable to external attacks. For example, an attacker pretends that a base station transmits a large amount of data to a UE through an IP tunnel, resulting in congestion of the wireless cellular network. Therefore, the base station needs to perform integrity protection on the data that is offloaded through the WLAN AP, so that the UE side is not subject to external attacks.
  • the base station uses the integrity protection key to perform integrity protection on the first protocol data unit.
  • the integrity protection key may be a secret for integrity protection of the RRC signaling of the wireless cellular network.
  • the key performs integrity protection on the first protocol data unit that is offloaded via the WLAN AP.
  • the base station calculates the integrity message authentication code (Message Authentication Code-Integrity) according to the integrity protection key for the first protocol data unit to which the IP header is added.
  • MAC-I attaching the MAC-I to the first protocol data unit to which the IP header is added, and performing integrity protection on the first protocol data unit.
  • the base station has an integrity-protected first protocol data unit with an IP header added via The WLAN AP sends to the UE.
  • the UE calculates the check value for integrity verification. If the calculated check value corresponds to the received MAC-I, the integrity protection is successful, and the UE considers that the first protocol data unit to which the IP header is added is the data sent by the base station, and the first protocol data is deleted after deleting the IP header.
  • the unit hands over to the aggregation layer processing of the first user equipment protocol stack.
  • the base station may also use other integrity protection keys for integrity protection via the first protocol data unit offloaded by the WLAN AP, which may require the base station to inform the UE in advance of the integrity protection key to enable the UE to perform integrity verification.
  • the integrity protection of the embodiment of the present invention ensures the security of data transmission and prevents external attacks on user equipment.
  • the method further includes:
  • the user equipment performs integrity protection on the second protocol data unit to which the IP header is added.
  • the base station side is vulnerable to external attacks. For example, the attacker pretends that the UE sends a large amount of data to the base station through the IP tunnel, causing the wireless cellular network to be heavily congested. Therefore, the UE needs to perform integrity protection on the data that is offloaded via the WLAN AP.
  • the UE uses the integrity protection key to perform integrity protection on the second protocol data unit.
  • the integrity protection key may be a radio resource control for the wireless cellular network.
  • RRC Radio Resource Control for the wireless cellular network.
  • the UE calculates the integrity message authentication code (Message Authentication Code-Integrity, MAC for short) according to the integrity protection key for the second protocol data unit added with the IP header. -I), and attaching the MAC-I to the second protocol data unit to which the IP header is added, and performing integrity protection on the second protocol data unit. Then, the UE sends the integrity-protected second protocol data unit with the added IP header to the base station via the WLAN AP. After receiving the integrity-protected second protocol data unit with the IP header added, the base station calculates the check value for integrity verification.
  • the integrity message authentication code Message Authentication Code-Integrity, MAC for short
  • the integrity protection is successful, and the base station considers that the second protocol data unit to which the IP header is added is the data sent by the UE, and the second protocol data is deleted after deleting the IP header.
  • the unit hands over to the aggregation layer processing of the first base station protocol stack.
  • the UE may also use other integrity protection keys to perform integrity protection on the uplink data that is offloaded by the WLAN AP.
  • One implementation manner is that the base station protects the other integrity in advance. The key is told to the UE.
  • the integrity protection of the embodiment of the present invention ensures the security of data transmission and prevents the base station from being attacked by an external one.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the user equipment and the base station according to the embodiment of the present invention are described in detail below with reference to FIG. 8 to FIG.
  • FIG. 8 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station 80 provided by the embodiment of the present invention includes a transmitting unit 801, a receiving unit 802, and a processing unit 803.
  • the transmitting unit 801 is configured to send the request information to the user equipment, the identifier of the WLAN AP of the WLAN access point, and the first IP address of the base station, where the request information is used to request the user equipment to perform multi-stream aggregation data with the base station via the WLAN AP.
  • the receiving unit 802 is configured to receive the acknowledgment information sent by the user equipment and the second IP address that the WLAN AP allocates to the user equipment, where the acknowledgment information is used to confirm that the user equipment performs multi-stream aggregation data transmission with the base station via the WLAN AP.
  • the processing unit 803 is configured to perform multi-stream aggregation data transmission with the user equipment by using the WLAN AP by using an IP tunnel, where the IP tunnel is determined by the first IP address and the second IP address.
  • the base station further includes a base station protocol stack unit 804:
  • the processing unit 803 is specifically configured to: add an IP header to the first protocol data unit generated by the aggregation layer of the base station protocol stack unit 804; the transmitting unit 801 is further configured to: pass the first protocol data unit with the added IP header through the IP tunnel, The WLAN AP sends to the user equipment; or,
  • the receiving unit 802 is further configured to: receive a second protocol data unit that is sent by the user equipment by using the WLAN AP through the IP tunnel; the processing unit 803 is specifically configured to: delete an IP header of the second protocol data unit, and indicate aggregation of the base station protocol stack unit 804 The layer processing deletes the second protocol data unit of the IP header, where the IP header is added by the user equipment to the second protocol data unit generated by the aggregation layer of the user equipment protocol stack.
  • the sending unit 801 sends the first protocol data unit to which the IP header is added to the user equipment through the WLAN AP
  • the processing unit 803 is specifically configured to: generate the first layer of the aggregation layer of the base station protocol stack unit 804.
  • a protocol data unit adds an IP header
  • the IP header includes
  • the radio unit 803 adds the radio bearer information corresponding to the first protocol data unit added according to the location information, and the radio bearer information is used by the user equipment to indicate that the aggregation layer entity mapped in the user equipment protocol stack and the radio bearer information processes the first protocol for deleting the IP header.
  • the processing unit 803 is specifically configured to: obtain, according to the location information, the second protocol data unit from the IP header of the second protocol data unit.
  • the radio bearer information deletes the IP header of the second protocol data unit, and instructs the aggregation layer entity in the base station protocol stack unit 804 and the radio bearer information to process the second protocol data unit in which the IP header is deleted.
  • the location information is used to indicate the location of the radio bearer information in the IP header, and the sending unit 801 is further configured to send the location information to the user equipment; or
  • the processing unit 803 is further configured to appoint location information with the user equipment according to the communication protocol.
  • the radio bearer information includes a radio bearer identifier or a logical channel identifier.
  • the IP header further includes priority information of the logical channel corresponding to the logical channel identifier, or priority information of the radio bearer corresponding to the radio bearer identifier.
  • the aggregation layer of the base station protocol stack unit 804 is used to:
  • the second protocol data unit of the IP header and the protocol data unit transmitted by the user equipment to the receiving unit through the wireless cellular network are aggregated.
  • the aggregation layer includes any one of the following:
  • Packet Data Convergence Protocol PDCP layer Packet Data Convergence Protocol
  • media access control MAC layer media access control MAC layer
  • radio link control RLC layer IP layer.
  • the IP header of the first protocol data unit further includes a source IP address and a destination IP address, where the source IP address is the first IP address, and the destination IP address is the second IP address; or
  • the IP header of the second protocol data unit further includes a source IP address and a destination IP address, the source IP address is a second IP address, and the destination IP address is a first IP address.
  • processing unit 803 is further configured to perform integrity protection on the first protocol data unit to which the IP header is added.
  • the base station provided by the embodiment of the present invention can perform the technical solution of the foregoing method embodiment, and the implementation principle thereof is similar, and details are not described herein again in this embodiment.
  • the base station provided by the embodiment of the present invention serves as a convergence point and a distribution point.
  • the base station is sensitive to the quality change of the network link of the WLAN, ensures service continuity, improves user experience, and avoids EPC as a convergence point and a distribution point.
  • the service is not sensitive to the quality change of the network link of the WLAN.
  • FIG. 9 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment 90 provided by the embodiment of the present invention includes: a receiving unit 901, a transmitting unit 902, and a processing unit 903.
  • the receiving unit 901 is configured to receive the request information sent by the base station, the identifier of the WLAN AP of the WLAN access point, and the first IP address of the base station, where the request information is used to request the user equipment to perform multi-stream aggregation data transmission with the base station via the WLAN AP;
  • the transmitting unit 902 is configured to send, to the base station, the acknowledgement information and the second IP address that the WLAN AP allocates to the user equipment, where the acknowledgement information is used to confirm that the user equipment performs multi-stream aggregation data transmission with the base station via the WLAN AP;
  • the processing unit 903 is configured to perform data transmission of the multi-stream aggregation with the base station by using the WLAN AP by using an IP tunnel, where the IP tunnel is determined by the first IP address and the second IP address.
  • the user equipment further includes a user equipment protocol stack unit 904:
  • the receiving unit 901 is further configured to: receive a first protocol data unit that is sent by the base station by using the WLAN AP through the IP tunnel; the processing unit 903 is specifically configured to: delete an IP header of the first protocol data unit, and indicate aggregation of the user equipment protocol stack unit 904 The layer processing deletes the first protocol data unit of the IP header, where the IP header is added by the base station to the first protocol data unit generated by the aggregation layer of the base station protocol stack; or
  • the processing unit 903 is specifically configured to: add an IP header to the second protocol data unit generated by the aggregation layer of the user equipment protocol stack unit 904; the transmitting unit 902 is further configured to: pass the second protocol data unit with the added IP header through the IP tunnel
  • the WLAN AP is sent to the base station.
  • the processing unit 903 is specifically configured to:
  • the aggregation layer entity processes the first protocol data unit that deletes the IP header; or,
  • the transmitting unit 902 passes the second protocol data unit to which the IP header is added through the IP tunnel, via Before the WLAN AP is sent to the base station, the processing unit 903 is specifically configured to:
  • IP header to the second protocol data unit generated by the aggregation layer of the user equipment protocol stack unit 904, where the IP header includes radio bearer information corresponding to the second protocol data unit added by the user equipment according to the location information, and the radio bearer information is used by the base station to indicate the base station.
  • the aggregation layer entity mapped with the radio bearer information in the protocol stack processes the second protocol data unit with the IP header deleted.
  • the location information is used to indicate the location of the radio bearer information in the IP header:
  • the receiving unit 901 is further configured to receive location information sent by the base station; or
  • the processing unit 903 is further configured to agree with the base station on the location information according to the communication protocol.
  • the radio bearer information includes a radio bearer identifier or a logical channel identifier.
  • the IP header further includes priority information of the logical channel corresponding to the logical channel identifier, or priority information of the radio bearer corresponding to the radio bearer identifier.
  • the aggregation layer of the user equipment protocol stack unit 904 is used to:
  • the first protocol data unit of the IP header and the protocol data unit transmitted by the base station to the receiving unit through the wireless cellular network are aggregated.
  • the aggregation layer includes any one of the following:
  • Packet Data Convergence Protocol PDCP layer Packet Data Convergence Protocol
  • media access control MAC layer media access control MAC layer
  • radio link control RLC layer IP layer.
  • the IP header of the first protocol data unit further includes a source IP address and a destination IP address, the source IP address is a first IP address, and the destination IP address is a second IP address.
  • the IP header of the second protocol data unit further includes a source IP address and a destination IP address, the source IP address is a second IP address, and the destination IP address is a first IP address.
  • processing unit 903 is further configured to perform integrity protection on the second protocol data unit to which the IP header is added.
  • the user equipment provided by the embodiment of the present invention can perform the technical solutions of the foregoing method embodiments, and the implementation principles and the like are not repeated herein.
  • the user equipment provided by the embodiment of the present invention uses the base station as a convergence point and a distribution point to implement the offload between the user equipment and the base station.
  • the base station is sensitive to the quality change of the network link of the wireless local area network, thereby ensuring service continuity and improving.
  • User experience, avoiding EPC as a convergence point and a diversion point Traffic insensitivity caused by changes in the quality of the network link of the WLAN is not continuous.
  • FIG. 10 is a schematic structural diagram of a base station according to still another embodiment of the present invention.
  • the base station 100 provided in this embodiment includes: a network interface 1001, a memory 1002, a processor 1003, and a bus 1004.
  • the network interface 1001, the memory 1002, and the processor 1003 are respectively connected to the bus 1004, where:
  • the processor 1003 calls the program 1005 stored in the memory 1002 through the bus 1004, and is configured to: send the request information to the user equipment through the network interface 1001, the identifier of the WLAN AP of the wireless local area network access point, and the first IP address of the base station, and request the information. And requesting the user equipment to perform multi-stream aggregation data transmission with the base station via the WLAN AP;
  • the network interface 1001 Receiving, by the network interface 1001, the acknowledgment information sent by the user equipment and the second IP address allocated by the WLAN AP to the user equipment, and the acknowledgment information is used for confirming that the user equipment performs multi-stream aggregation data transmission with the base station via the WLAN AP;
  • the processor 1003 performs multi-stream aggregated data transmission with the user equipment via the WLAN AP through the IP tunnel, and the IP tunnel is determined by the first IP address and the second IP address.
  • the processor 1003 when the processor 1003 performs multi-stream aggregation data transmission with the user equipment through the WLAN AP through the IP tunnel, the processor 1003 is specifically configured to:
  • the network interface 1001 Receiving, by the network interface 1001, the second protocol data unit sent by the user equipment through the IP tunnel, via the WLAN AP, deleting the IP header of the second protocol data unit, and processing the second protocol that deletes the IP header according to the aggregation layer function of the base station protocol stack a data unit, wherein the IP header is added by the user equipment to the second protocol data unit generated according to the aggregation layer function of the user equipment protocol stack.
  • the processor 1003 when the processor 1003 performs multi-stream aggregation data transmission with the user equipment through the WLAN AP through the IP tunnel, the processor 1003 is specifically configured to:
  • IP header Adding an IP header to the first protocol data unit generated according to the aggregation layer function of the base station protocol stack, where the IP header includes the radio bearer information corresponding to the first protocol data unit added by the processor 1003 according to the location information, and is added through the network interface 1001.
  • the first protocol data unit of the IP header is sent to the user equipment through the WLAN AP through the IP tunnel, and the radio bearer information is used by the user equipment to delete according to the aggregation layer function of the aggregation layer entity mapped in the user equipment protocol stack and the radio bearer information.
  • the first protocol data unit of the IP header or
  • the network interface 1001 Receiving, by the network interface 1001, the second protocol data unit that is sent by the user equipment by using the WLAN AP through the IP tunnel, acquiring the radio bearer information corresponding to the second protocol data unit from the IP header of the second protocol data unit according to the location information, and deleting the second The IP header of the protocol data unit, and the second protocol data unit of the IP header is deleted according to the aggregation layer function of the aggregation layer entity mapped with the radio bearer information in the base station protocol stack.
  • the location information is used to indicate the location of the radio bearer information in the IP header:
  • the processor 1003 is further configured to send the location information to the user equipment through the network interface, or to agree with the user equipment according to the communication protocol.
  • the radio bearer information includes a radio bearer identifier or a logical channel identifier.
  • the IP header further includes priority information of the logical channel corresponding to the logical channel identifier, or priority information of the radio bearer corresponding to the radio bearer identifier.
  • the processor 1003 is further configured to: according to an aggregation layer function of the base station protocol stack:
  • the second protocol data unit of the IP header and the protocol data unit transmitted by the user equipment to the receiving unit through the wireless cellular network are aggregated.
  • the aggregation layer includes any one of the following:
  • Packet Data Convergence Protocol PDCP layer Packet Data Convergence Protocol
  • media access control MAC layer media access control MAC layer
  • radio link control RLC layer IP layer.
  • the IP header of the first protocol data unit further includes a source IP address and a destination IP address, where the source IP address is the first IP address, and the destination IP address is the second IP address; or
  • the IP header of the second protocol data unit further includes a source IP address and a destination IP address, the source IP address is a second IP address, and the destination IP address is a first IP address.
  • the processor 1003 is further configured to perform integrity protection on the first protocol data unit to which the IP header is added.
  • the executor of adding or deleting an IP header may specifically be a processor or a base station protocol stack of the base station.
  • the base station provided by the embodiment of the present invention can perform the technical solution of the foregoing method embodiment, and the implementation principle thereof is similar, and details are not described herein again in this embodiment.
  • the base station provided by the embodiment of the present invention serves as a convergence point and a distribution point.
  • the base station is sensitive to the quality change of the network link of the wireless local area network, ensures service continuity, improves user experience, and avoids EPC as a convergence point and a distribution point. When the quality of the network link of the WLAN is not sensitive, the service is not continuous.
  • FIG. 11 is a schematic structural diagram of a user equipment according to still another embodiment of the present invention.
  • the user equipment 110 provided in this embodiment includes: a network interface 1101, a memory 1102, a processor 1103, and a bus 1104.
  • the network interface 1101, the memory 1102, and the processor 1103 are respectively connected to the bus 1104, where: the processor 1103 passes through the bus 1104.
  • the program 1105 stored in the memory 1102 is configured to: receive, by the network interface 1101, request information sent by the base station, the identifier of the WLAN AP of the WLAN access point and the first IP address of the base station, and the request information is used to request the user equipment to pass the WLAN AP.
  • the acknowledgment information is sent to the base station through the network interface 1101 and the second IP address allocated by the WLAN AP to the user equipment, and the acknowledgment information is used to confirm the data transmission of the multi-stream aggregation of the user equipment with the base station via the WLAN AP;
  • the processor 1103 performs multi-stream aggregation data transmission with the base station via the WLAN AP through the IP tunnel, and the IP tunnel is determined by the first IP address and the second IP address.
  • the processor 1103 when the processor 1103 performs multi-stream aggregation data transmission with the base station via the WLAN AP through the IP tunnel, the processor 1103 is specifically configured to:
  • the network interface 1101 Receiving, by the network interface 1101, the first protocol data unit sent by the base station through the IP tunnel, via the WLAN AP, deleting the IP header of the first protocol data unit, and processing the first protocol that deletes the IP header according to the aggregation layer function of the user equipment protocol stack a data unit, wherein the IP header is added by the base station to the first protocol data unit generated according to the aggregation layer function of the base station protocol stack;
  • An IP header is added to the second protocol data unit generated according to the aggregation layer function of the user equipment protocol stack, and the second protocol data unit to which the IP header is added is sent to the base station through the IP tunnel through the WLAN AP through the network interface.
  • the processor 1103 when the processor 1103 performs multi-stream aggregation data transmission with the base station via the WLAN AP through the IP tunnel, the processor 1103 is specifically configured to:
  • the network interface 1101 Receiving, by the network interface 1101, the first protocol data unit that is sent by the base station by using the WLAN AP, and acquiring the radio bearer information corresponding to the first protocol data unit from the IP header of the first protocol data unit according to the location information, deleting the first The IP header of the protocol data unit, and according to The aggregation layer function of the aggregation layer entity mapped with the radio bearer information in the user equipment protocol stack deletes the first protocol data unit of the IP header; or
  • the processor 1103 adds an IP header to the second protocol data unit generated according to the aggregation layer function of the user equipment protocol stack, where the IP header includes radio bearer information corresponding to the second protocol data unit added by the processor according to the location information, and passes through the network interface 1101.
  • the second protocol data unit to which the IP header is added is sent to the base station via the WLAN AP through the IP tunnel, and the radio bearer information is used by the base station to delete the IP header according to the aggregation layer function of the aggregation layer entity mapped with the radio bearer information in the base station protocol stack.
  • the second protocol data unit is sent to the base station via the WLAN AP through the IP tunnel, and the radio bearer information is used by the base station to delete the IP header according to the aggregation layer function of the aggregation layer entity mapped with the radio bearer information in the base station protocol stack.
  • the location information is used to indicate the location of the radio bearer information in the IP header:
  • the processor 1103 is further configured to receive the location information sent by the base station through the network interface, or to agree with the user equipment according to the communication protocol.
  • the radio bearer information includes a radio bearer identifier or a logical channel identifier.
  • the IP header further includes priority information of the logical channel corresponding to the logical channel identifier, or priority information of the radio bearer corresponding to the radio bearer identifier.
  • the processor 1103 is further configured to: split the protocol data unit that is transmitted by the second protocol data unit and the transmitting unit to the base station by using the wireless cellular network according to the user equipment protocol stack aggregation layer function; or
  • the first protocol data unit of the IP header and the protocol data unit transmitted by the base station to the receiving unit through the wireless cellular network are aggregated.
  • the aggregation layer includes any one of the following:
  • Packet Data Convergence Protocol PDCP layer Packet Data Convergence Protocol
  • media access control MAC layer media access control MAC layer
  • radio link control RLC layer IP layer.
  • the IP header of the first protocol data unit further includes a source IP address and a destination IP address, the source IP address is a first IP address, and the destination IP address is a second IP address.
  • the IP header of the second protocol data unit further includes a source IP address and a destination IP address, the source IP address is a second IP address, and the destination IP address is a first IP address.
  • the processor 1103 is further configured to perform integrity protection on the second protocol data unit to which the IP header is added.
  • the executor of adding or deleting an IP header may specifically be a processor of the user equipment or a user equipment protocol stack.
  • the user equipment provided by the embodiment of the present invention can perform the technical solutions of the foregoing method embodiments, and the implementation principles thereof are similar, and details are not described herein again.
  • the user equipment provided by the embodiment of the present invention implements the offload between the user equipment and the base station when the base station is used as the convergence point and the split point. Since the base station is sensitive to the quality change of the network link of the wireless local area network, the service continuity is ensured. Improve the user experience and avoid business discontinuities caused by insensitivity to the quality changes of the wireless LAN network link when the EPC is used as a convergence point and a distribution point.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, may be located in one place. Or it can be distributed to multiple network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a disk or an optical disk, and the like, which can store program codes. Medium.

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Abstract

本发明实施例提供一种数据传输方法及设备,该方法通过基站向用户设备发送请求信息,无线局域网接入点WLAN AP的标识,和所述基站的第一IP地址,所述请求信息用于请求所述用户设备经由所述WLAN AP与所述基站进行多流聚合的数据传输;所述基站接收所述用户设备发送的确认信息和所述WLAN AP为所述用户设备分配的第二IP地址,所述确认信息用于确认所述用户设备经由所述WLAN AP与所述基站进行多流聚合的数据传输;所述基站通过所述IP隧道经由所述WLAN AP与所述用户设备进行多流聚合的数据传输,所述IP隧道由所述第一IP地址和所述第二IP地址确定。本实施例保证了分流过程中的业务连续性。

Description

数据传输方法及设备
技术领域
本发明实施例涉及通信技术, 尤其涉及一种数据传输方法及设备。 背景技术
随着智能手机的迅猛发展, 越来越多的移动通信终端都集成了无线局域 网 (Wireless Local Area Network, 简称 WLAN) 的通信模块。 另一方面, 随 着人们对移动宽带需求的不断增加, 现有的 (例如, 无线蜂窝) 通信系统承 受到越来越大的数据流量的压力。
无线蜂窝网络具有覆盖范围广、 支持高速移动等优点, 同时具有数据速 率低、 价格高、 传输功率大等缺点, 比较适合于高速运动、 室外大范围活动 等场景。 而 WLAN具有数据速率高、 价格低、 传输功率小等优点, 同时具有 覆盖范围小, 比较适合于相对静止、 室内小范围活动等场景。 考虑到无线蜂 窝网络和无线局域网各自的优缺点之后, 一个可行的方法是把无线蜂窝技术 和 WLAN技术相互融合, 利用 WLAN分流无线蜂窝通信系统的数据流量, 提高用户体验, 实现高效低成本的通信。
目前, 已知一种通信技术, 在用户设备 (User Equipment, 简称 UE) 已 经通过基站接入演进的分组核心网 (Evolved Packet Core, 简称 EPC) , 并通 过某一分组数据网网关(Packet Data Network-Gateway, PDN-GW)建立分组 数据网 (Packet Data Network, PDN) 连接。 随后, 该 UE可以通过例如, 可 信无线局域网络接入网 (Trusted Wireless Local Area Networks Access Network, 简称 TWAN) 接入该 EPC, 并且, TWAN可以选择某一 PDN-GW 创建 PDN连接, 从而实现了无线蜂窝技术和 WLAN技术相互融合。
但是, 该技术无法保证业务连续性, 严重影响用户体验。 发明内容
本发明实施例提供一种数据传输方法及设备, 在实现分流的同时, 保证 业务连续性, 改善用户体验。 第一方面, 本发明实施例提供一种数据传输的方法, 包括: 基站向用户设备发送请求信息, 无线局域网接入点 WLAN AP的标识, 和所述基站的第一 IP 地址, 所述请求信息用于请求所述用户设备经由所述 WLAN AP与所述基站进行多流聚合的数据传输;
所述基站接收所述用户设备发送的确认信息和所述 WLAN AP为所述用 户设备分配的第二 IP 地址, 所述确认信息用于确认所述用户设备经由所述 WLAN AP与所述基站进行多流聚合的数据传输;
所述基站通过所述 IP隧道经由所述 WLAN AP与所述用户设备进行多流 聚合的数据传输, 所述 IP隧道由所述第一 IP地址和所述第二 IP地址确定。
结合第一方面, 在第一方面的第一种可能的实现方式中, 所述基站具有 基站协议栈, 所述基站通过所述 IP隧道经由所述 WLAN AP与所述用户设备 进行多流聚合的数据传输, 包括:
所述基站对所述基站协议栈的聚合层生成的第一协议数据单元添加 IP报 头, 并将添加了所述 IP报头的第一协议数据单元通过所述 IP隧道, 经由所 述 WLAN AP发送至所述用户设备; 或,
所述基站接收所述用户设备通过所述 IP隧道经由所述 WLAN AP发送的 第二协议数据单元, 删除所述第二协议数据单元的 IP报头, 并指示所述基站 协议栈的聚合层处理所述删除了 IP报头的第二协议数据单元, 其中, 所述 IP 报头由所述用户设备对用户设备协议栈的聚合层生成的所述第二协议数据单 元添加。
结合第一方面的第一种可能的实现方式, 在第一方面的第二种可能的实 现方式中,
所述基站对所述基站协议栈的聚合层生成的第一协议数据单元添加 IP报 头, 并将添加了所述 IP报头的第一协议数据单元通过所述 IP隧道, 经由所 述 WLAN AP发送至所述用户设备, 包括:
所述基站对所述基站协议栈的聚合层生成的第一协议数据单元添加 IP报 头, 所述 IP报头包括所述基站根据位置信息添加的所述第一协议数据单元对 应的无线承载信息,并将所述添加了 IP报头的第一协议数据单元通过所述 IP 隧道, 经由所述 WLAN AP发送至所述用户设备, 所述无线承载信息用于所 述用户设备指示所述用户设备协议栈中与所述无线承载信息映射的聚合层实 体处理删除了 IP报头的所述第一协议数据单元; 或
所述基站接收所述用户设备通过所述 IP隧道经由所述 WLAN AP发送的 第二协议数据单元, 删除所述第二协议数据单元的 IP报头, 并指示所述基站 协议栈的聚合层处理所述删除了 IP报头的第二协议数据单元, 包括:
所述基站接收所述用户设备通过所述 IP隧道经由所述 WLAN AP发送的 第二协议数据单元, 根据位置信息从所述第二协议数据单元的 IP报头中获取 与所述第二协议数据单元对应的无线承载信息, 删除所述第二协议数据单元 的 IP报头, 并指示所述基站协议栈中与所述无线承载信息映射的聚合层实体 处理所述删除了 IP报头的第二协议数据单元。
结合第一方面的第二种可能的实现方式, 在第一方面的第三种可能的实 现方式中, 所述位置信息由所述基站向所述用户设备发送, 或, 由所述基站 与所述用户设备根据通信协议约定;
所述位置信息用于指示所述无线承载信息在所述 IP报头中的位置。 结合第一方面的第二种或第三种可能的实现方式, 在第一方面的第四种 可能的实现方式中, 所述无线承载信息包括无线承载标识或逻辑信道标识。
结合第一方面的第四种可能的实现方式, 在第一方面的第五种可能的实 现方式中, 所述 IP报头还包括所述逻辑信道标识对应的逻辑信道的优先级信 息, 或所述无线承载标识对应的无线承载的优先级信息。
结合第一方面的第二种至第五种任一种可能的实现方式, 在第一方面的 第六种可能的实现方式中, 所述基站协议栈的聚合层用于:
分流所述第一协议数据单元和所述基站通过无线蜂窝网络向所述用户设 备传输的协议数据单元; 或,
汇聚所述删除了 IP报头的第二协议数据单元和所述用户设备通过无线蜂 窝网络向所述基站传输的协议数据单元。
结合第一方面的第二种至第六种任一种可能的实现方式, 在第一方面的 第七种可能的实现方式中, 所述聚合层包括以下任意一种:
分组数据汇聚协议 PDCP层、媒体接入控制 MAC层、无线链路控制 RLC 层、 IP层。
结合第一方面的第二种至第七种任一种可能的实现方式, 在第一方面的 第八种可能的实现方式中, 所述第一协议数据单元的 IP报头还包括源 IP地 址和目的 IP地址, 所述源 IP地址为所述第一 IP地址, 所述目的 IP地址为所 述第二 IP地址; 或,
所述第二协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第二 IP地址, 所述目的 IP地址为所述第一 IP地址。
结合第一方面的第一种至第八种任一种可能的实现方式, 在第一方面的 第九种可能的实现方式中, 还包括:
所述基站对所述添加了 IP报头的第一协议数据单元进行完整性保护。 第二方面, 本发明实施例提供一种数据传输的方法, 包括:
用户设备接收基站发送的请求信息, 无线局域网接入点 WLAN AP的标 识和所述基站的第一 IP地址, 所述请求信息用于请求所述用户设备经由所述 WLAN AP与所述基站进行多流聚合的数据传输;
所述用户设备向所述基站发送确认信息和所述 WLAN AP为所述用户设 备分配的第二 IP地址,所述确认信息用于确认所述用户设备经由所述 WLAN AP与所述基站进行多流聚合的数据传输;
所述用户设备通过 IP隧道经由所述 WLAN AP与所述基站进行多流聚合 的数据传输, 所述 IP隧道由所述第一 IP地址和所述第二 IP地址确定。
结合第二方面, 在第二方面的第一种可能的实现方式中, 所述用户设备 具有用户设备协议栈, 所述用户设备通过 IP隧道经由所述 WLAN AP与所述 基站进行多流聚合的数据传输, 包括:
所述用户设备接收所述基站通过所述 IP隧道经由所述 WLAN AP发送的 第一协议数据单元, 删除所述第一协议数据单元的 IP报头, 并指示所述用户 设备协议栈的聚合层处理所述删除了 IP报头的第一协议数据单元, 其中, 所 述 IP报头由所述基站对基站协议栈的聚合层生成的所述第一协议数据单元添 力口; 或
所述用户设备对所述用户设备协议栈的聚合层生成的第二协议数据单元 添加 IP报头,并将添加了所述 IP报头的第二协议数据单元通过所述 IP隧道, 经由所述 WLAN AP发送至所述基站。
结合第二方面的第一种可能的实现方式, 在第二方面的第二种可能的实 现方式中, 所述用户设备接收所述基站通过所述 IP隧道经由所述 WLAN AP 发送的第一协议数据单元, 删除所述第一协议数据单元的 IP报头, 并指示所 述用户设备协议栈的聚合层处理所述删除了 IP报头的第一协议数据单元, 包 括:
所述用户设备接收所述基站通过所述 IP隧道经由所述 WLAN AP发送的 第一协议数据单元, 根据位置信息从所述第一协议数据单元的 IP报头中获取 与所述第一协议数据单元对应的无线承载信息, 删除所述第一协议数据单元 的 IP报头, 并指示所述用户设备协议栈中与所述无线承载信息映射的聚合层 实体处理所述删除了 IP报头的第一协议数据单元; 或,
所述用户设备对所述用户设备协议栈的聚合层生成的第二协议数据单元 添加 IP报头,并将添加了所述 IP报头的第二协议数据单元通过所述 IP隧道, 经由所述 WLAN AP发送至所述基站, 包括:
所述用户设备对所述用户设备协议栈的聚合层生成的第二协议数据单元 添加 IP报头, 所述 IP报头包括所述用户设备根据位置信息添加的所述第二 协议数据单元对应的无线承载信息, 并将所述添加了 IP报头的第二协议数据 单元通过所述 IP隧道经由所述 WLAN AP发送至所述基站, 所述无线承载信 息用于所述基站指示所述基站协议栈中与所述无线承载信息映射的聚合层实 体处理删除了 IP报头的所述第二协议数据单元。
结合第二方面的第二种可能的实现方式, 在第二方面的第三种可能的实 现方式中, 所述位置信息由所述基站向所述用户设备发送, 或, 由所述基站 与所述用户设备根据通信协议约定;
所述位置信息用于指示所述无线承载信息在所述 IP报头中的位置。
结合第二方面的第二种或第三种可能的实现方式, 在第二方面的第四种 可能的实现方式中, 所述无线承载信息包括无线承载标识或逻辑信道标识。
结合第二方面的第四种可能的实现方式, 在第二方面的第五种可能的实 现方式中, 所述 IP报头还包括所述逻辑信道标识对应的逻辑信道的优先级信 息, 或所述无线承载标识对应的无线承载的优先级信息。
结合第二方面的第二种至第五种任一种可能的实现方式, 在第二方面的 第六种可能的实现方式中, 所述用户设备协议栈的聚合层用于:
分流所述第二协议数据单元和所述用户设备通过无线蜂窝网络向所述基 站传输的协议数据单元; 或
汇聚所述删除了 IP报头的第一协议数据单元和所述基站通过无线蜂窝网 络向所述用户设备传输的协议数据单元。
结合第二方面的第二种至第六种任一种可能的实现方式, 在第二方面的 第七种可能的实现方式中, 所述聚合层包括以下任意一种:
分组数据汇聚协议 PDCP层、媒体接入控制 MAC层、无线链路控制 RLC 层、 IP层。
结合第二方面的第二种至第七种任一种可能的实现方式, 在第二方面的 第八种可能的实现方式中, 所述第一协议数据单元的 IP报头还包括源 IP地 址和目的 IP地址, 所述源 IP地址为所述第一 IP地址, 所述目的 IP地址为所 述第二 IP地址;
所述第二协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第二 IP地址, 所述目的 IP地址为所述第一 IP地址。
结合第二方面的第一种至第八种任一种可能的实现方式, 在第二方面的 第九种可能的实现方式中, 还包括:
所述用户设备对所述添加了 IP报头的第二协议数据单元进行完整性保 护。
第三方面, 本发明实施例提供一种基站, 包括:
发射单元,用于向用户设备发送请求信息,无线局域网接入点 WLAN AP 的标识和所述基站的第一 IP地址, 所述请求信息用于请求所述用户设备经由 所述 WLAN AP与所述基站进行多流聚合的数据传输;
接收单元, 用于接收所述用户设备发送的确认信息和所述 WLAN AP为 所述用户设备分配的第二 IP地址, 所述确认信息用于确认所述用户设备经由 所述 WLAN AP与所述基站进行多流聚合的数据传输;
处理单元, 用于通过所述 IP隧道经由所述 WLAN AP与所述用户设备进 行多流聚合的数据传输, 所述 IP隧道由所述第一 IP地址和所述第二 IP地址 确定。
结合第三方面, 在第三方面的第一种可能的实现方式中, 所述基站还包 括基站协议栈单元:
所述处理单元具体用于: 对所述基站协议栈单元的聚合层生成的第一协 议数据单元添加 IP报头; 所述发射单元还用于, 将添加了所述 IP报头的第 一协议数据单元通过所述 IP隧道,经由所述 WLAN AP发送至所述用户设备; 或,
所述接收单元还用于: 接收所述用户设备通过所述 IP 隧道经由所述 WLAN AP发送的第二协议数据单元; 所述处理单元具体用于: 删除所述第 二协议数据单元的 IP报头, 并指示所述基站协议栈单元的聚合层处理所述删 除了 IP报头的第二协议数据单元, 其中, 所述 IP报头由所述用户设备对用 户设备协议栈的聚合层生成的所述第二协议数据单元添加。
结合第三方面的第一种可能的实现方式, 在第三方面的第二种可能的实 现方式中,
所述发射单元将添加了所述 IP报头的第一协议数据单元通过所述 IP隧 道, 经由所述 WLAN AP发送至所述用户设备前, 所述处理单元具体用于: 对所述基站协议栈单元的聚合层生成的第一协议数据单元添加 IP报头, 所述 IP报头包括所述处理单元根据位置信息添加的所述第一协议数据单元对应的 无线承载信息, 所述无线承载信息用于所述用户设备指示所述用户设备协议 栈中与所述无线承载信息映射的聚合层实体处理删除 IP了报头的所述第一协 议数据单元; 或
所述接收单元接收所述用户设备通过所述 IP隧道经由所述 WLAN AP发 送的第二协议数据单元后, 所述处理单元具体用于: 根据位置信息从所述第 二协议数据单元的 IP报头中获取与所述第二协议数据单元对应的无线承载信 息, 删除所述第二协议数据单元的 IP报头, 并指示所述基站协议栈单元中与 所述无线承载信息映射的聚合层实体处理所述删除了 IP报头的第二协议数据 单元。
结合第三方面的第二种可能的实现方式, 在第三方面的第三种可能的实 现方式中,所述位置信息用于指示所述无线承载信息在所述 IP报头中的位置, 所述发射单元还用于向所述用户设备发送所述位置信息; 或,
所述处理单元还用于与所述用户设备根据通信协议约定所述位置信息。 结合第三方面的第二种或第三种可能的实现方式, 在第三方面的第四种 可能的实现方式中, 所述无线承载信息包括无线承载标识或逻辑信道标识。
结合第三方面的第四种可能的实现方式, 在第三方面的第五种可能的实 现方式中, 所述 IP报头还包括所述逻辑信道标识对应的逻辑信道的优先级信 息, 或所述无线承载标识对应的无线承载的优先级信息。 结合第三方面的第二种至第五种任一种可能的实现方式, 在第三方面的 第六种可能的实现方式中, 所述基站协议栈单元的聚合层用于:
分流所述第一协议数据单元和所述发射单元通过无线蜂窝网络向所述用 户设备传输的协议数据单元; 或,
汇聚所述删除了 IP报头的第二协议数据单元和所述用户设备通过无线蜂 窝网络向所述接收单元传输的协议数据单元。
结合第三方面的第二种至第六种任一种可能的实现方式, 在第三方面的 第七种可能的实现方式中, 所述聚合层包括以下任意一种:
分组数据汇聚协议 PDCP层、媒体接入控制 MAC层、无线链路控制 RLC 层、 IP层。
结合第三方面的第二种至第七种任一种可能的实现方式, 在第三方面的 第八种可能的实现方式中, 所述第一协议数据单元的 IP报头还包括源 IP地 址和目的 IP地址, 所述源 IP地址为所述第一 IP地址, 所述目的 IP地址为所 述第二 IP地址; 或,
所述第二协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第二 IP地址, 所述目的 IP地址为所述第一 IP地址。
结合第三方面的第一种至第八种任一种可能的实现方式, 在第三方面的 第九种可能的实现方式中, 所述处理单元还用于对所述添加了 IP报头的第一 协议数据单元进行完整性保护。
第四方面, 本发明实施例提供一种用户设备, 包括:
接收单元,用于接收基站发送的请求信息,无线局域网接入点 WLAN AP 的标识和所述基站的第一 IP地址, 所述请求信息用于请求所述用户设备经由 所述 WLAN AP与所述基站进行多流聚合的数据传输;
发射单元, 用于向所述基站发送确认信息和所述 WLAN AP为所述用户 设备分配的第二 IP 地址, 所述确认信息用于确认所述用户设备经由所述 WLAN AP与所述基站进行多流聚合的数据传输;
处理单元, 用于通过 IP隧道经由所述 WLAN AP与所述基站进行多流聚 合的数据传输, 所述 IP隧道由所述第一 IP地址和所述第二 IP地址确定。
结合第四方面, 在第四方面的第一种可能的实现方式中, 所述用户设备 还包括用户设备协议栈单元: 所述接收单元还用于: 接收所述基站通过所述 IP隧道经由所述 WLAN AP发送的第一协议数据单元; 所述处理单元具体用于: 删除所述第一协议数 据单元的 IP报头, 并指示所述用户设备协议栈单元的聚合层处理所述删除了 IP报头的第一协议数据单元, 其中, 所述 IP报头由所述基站对基站协议栈的 聚合层生成的所述第一协议数据单元添加; 或
所述处理单元具体用于: 对所述用户设备协议栈单元的聚合层生成的第 二协议数据单元添加 IP报头; 所述发射单元还用于: 将添加了所述 IP报头 的第二协议数据单元通过所述 IP隧道经由所述 WLAN AP发送至所述基站。
结合第四方面的第一种可能的实现方式, 在第四方面的第二种可能的实 现方式中, 所述接收单元接收所述基站通过所述 IP隧道经由所述 WLAN AP 发送的第一协议数据单元后, 所述处理单元具体用于:
根据位置信息从所述第一协议数据单元的 IP报头中获取与所述第一协议 数据单元对应的无线承载信息, 删除所述第一协议数据单元的 IP报头, 并指 示所述用户设备协议栈单元中与所述无线承载信息映射的聚合层实体处理所 述删除了 IP报头的第一协议数据单元; 或,
所述发射单元将添加了所述 IP报头的第二协议数据单元通过所述 IP隧 道, 经由所述 WLAN AP发送至所述基站前, 所述处理单元具体用于:
对所述用户设备协议栈单元的聚合层生成的第二协议数据单元添加 IP报 头, 所述 IP报头包括所述用户设备根据位置信息添加的所述第二协议数据单 元对应的无线承载信息, 所述无线承载信息用于所述基站指示所述基站协议 栈中与所述无线承载信息映射的聚合层实体处理删除了 IP报头的所述第二协 议数据单元。
结合第四方面的第二种可能的实现方式, 在第四方面的第三种可能的实 现方式中,所述位置信息用于指示所述无线承载信息在所述 IP报头中的位置: 所述接收单元还用于接收所述基站发送的所述位置信息; 或,
所述处理单元还用于与所述基站根据通信协议约定所述位置信息。
结合第四方面的第二种或第三种可能的实现方式, 在第四方面的第四种 可能的实现方式中, 所述无线承载信息包括无线承载标识或逻辑信道标识。
结合第四方面的第四种可能的实现方式, 在第四方面的第五种可能的实 现方式中, 所述 IP报头还包括所述逻辑信道标识对应的逻辑信道的优先级信 息, 或所述无线承载标识对应的无线承载的优先级信息。
结合第四方面的第二种至第五种任一种可能的实现方式, 在第四方面的 第六种可能的实现方式中, 所述用户设备协议栈单元的聚合层用于:
分流所述第二协议数据单元和所述发射单元通过无线蜂窝网络向所述基 站传输的协议数据单元; 或
汇聚所述删除了 IP报头的第一协议数据单元和所述基站通过无线蜂窝网 络向所述接收单元传输的协议数据单元。
结合第四方面的第二种至第六种任一种可能的实现方式, 在第四方面的 第七种可能的实现方式中, 所述聚合层包括以下任意一种:
分组数据汇聚协议 PDCP层、媒体接入控制 MAC层、无线链路控制 RLC 层、 IP层。
结合第四方面的第二种至第七种任一种可能的实现方式, 在第四方面的 第八种可能的实现方式中, 所述第一协议数据单元的 IP报头还包括源 IP地 址和目的 IP地址, 所述源 IP地址为所述第一 IP地址, 所述目的 IP地址为所 述第二 IP地址;
所述第二协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第二 IP地址, 所述目的 IP地址为所述第一 IP地址。
结合第四方面的第一种至第八种任一种可能的实现方式, 在第四方面的 第九种可能的实现方式中, 所述处理单元还用于对所述添加了 IP报头的第二 协议数据单元进行完整性保护。
第五方面, 本发明实施例提供一种基站, 包括: 网络接口、 存储器、 处 理器以及总线, 所述网络接口、 所述存储器以及所述处理器分别与所述总线 连接, 其中:
所述处理器通过所述总线, 调用所述存储器中存储的程序, 用于: 通过所述网络接口向所述用户设备发送请求信息, 无线局域网接入点
WLAN AP的标识和所述基站的第一 IP地址, 所述请求信息用于请求所述用 户设备经由所述 WLAN AP与所述基站进行多流聚合的数据传输;
通过所述网络接口接收所述用户设备发送的确认信息和所述 WLAN AP 为所述用户设备分配的第二 IP地址, 所述确认信息用于确认所述用户设备经 由所述 WLAN AP与所述基站进行多流聚合的数据传输; 所述处理器通过所述 IP隧道经由所述 WLAN AP与所述用户设备进行多 流聚合的数据传输,所述 IP隧道由所述第一 IP地址和所述第二 IP地址确定。
结合第五方面, 在第五方面的第一种可能的实现方式中, 当所述处理器 通过所述 IP隧道经由所述 WLAN AP与所述用户设备进行多流聚合的数据传 输时, 所述处理器具体用于:
对根据基站协议栈的聚合层功能生成的第一协议数据单元添加 IP报头, 并通过所述网络接口将添加了所述 IP报头的第一协议数据单元通过所述 IP 隧道, 经由所述 WLAN AP发送至所述用户设备; 或,
通过所述网络接口接收所述用户设备通过所述 IP隧道,经由所述 WLAN AP发送的第二协议数据单元, 删除所述第二协议数据单元的 IP报头, 并根 据基站协议栈的聚合层功能处理所述删除了 IP报头的第二协议数据单元, 其 中, 所述 IP报头由所述用户设备对根据用户设备协议栈的聚合层功能生成的 所述第二协议数据单元添加。
结合第五方面的第一种可能的实现方式, 在第五方面的第二种可能的实 现方式中,
当所述处理器通过所述 IP隧道经由所述 WLAN AP与所述用户设备进行 多流聚合的数据传输时, 所述处理器具体用于:
对根据基站协议栈的聚合层功能生成的第一协议数据单元添加 IP报头, 所述 IP报头包括所述处理器根据位置信息添加的所述第一协议数据单元对应 的无线承载信息, 并通过所述网络接口将所述添加了 IP报头的第一协议数据 单元通过所述 IP隧道, 经由所述 WLAN AP发送至所述用户设备, 所述无线 承载信息用于所述用户设备根据所述用户设备协议栈中与所述无线承载信息 映射的聚合层实体的聚合层功能处理删除了 IP报头的所述第一协议数据单 元; 或
通过所述网络接口接收所述用户设备通过所述 IP隧道经由所述 WLAN
AP 发送的第二协议数据单元, 根据位置信息从所述第二协议数据单元的 IP 报头中获取与所述第二协议数据单元对应的无线承载信息, 删除所述第二协 议数据单元的 IP报头, 并根据基站协议栈中与所述无线承载信息映射的聚合 层实体的聚合层功能处理所述删除了 IP报头的第二协议数据单元。
结合第五方面的第二种可能的实现方式, 在第五方面的第三种可能的实 现方式中,所述位置信息用于指示所述无线承载信息在所述 IP报头中的位置: 所述处理器还用于通过所述网络接口向所述用户设备发送所述位置信 息, 或, 与所述用户设备根据通信协议约定所述位置信息。
结合第五方面的第二种或第三种可能的实现方式, 在第五方面的第四种 可能的实现方式中, 所述无线承载信息包括无线承载标识或逻辑信道标识。
结合第五方面的第四种可能的实现方式, 在第五方面的第五种可能的实 现方式中, 所述 IP报头还包括所述逻辑信道标识对应的逻辑信道的优先级信 息, 或所述无线承载标识对应的无线承载的优先级信息。
结合第五方面的第二种至第五种任一种可能的实现方式, 在第五方面的 第六种可能的实现方式中,所述处理器根据基站协议栈的聚合层功能还用于: 分流所述第一协议数据单元和所述发射单元通过无线蜂窝网络向所述用 户设备传输的协议数据单元; 或,
汇聚所述删除了 IP报头的第二协议数据单元和所述用户设备通过无线蜂 窝网络向所述接收单元传输的协议数据单元。
结合第五方面的第二种至第六种任一种可能的实现方式, 在第五方面的 第七种可能的实现方式中, 所述聚合层包括以下任意一种:
分组数据汇聚协议 PDCP层、媒体接入控制 MAC层、无线链路控制 RLC 层、 IP层。
结合第五方面的第二种至第七种任一种可能的实现方式, 在第五方面的 第八种可能的实现方式中, 所述第一协议数据单元的 IP报头还包括源 IP地 址和目的 IP地址, 所述源 IP地址为所述第一 IP地址, 所述目的 IP地址为所 述第二 IP地址; 或,
所述第二协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第二 IP地址, 所述目的 IP地址为所述第一 IP地址。
结合第五方面的第一种至第八种任一种可能的实现方式, 在第五方面的 第九种可能的实现方式中, 所述处理器还用于对所述添加了 IP报头的第一协 议数据单元进行完整性保护。
第六方面, 本发明实施例提供一种用户设备, 包括: 网络接口、 存储器、 处理器以及总线, 所述网络接口、 所述存储器以及所述处理器分别与所述总 线连接, 其中: 所述处理器通过所述总线, 调用所述存储器中存储的程序, 用于: 通过所述网络接口接收所述基站发送的请求信息, 无线局域网接入点
WLAN AP的标识和所述基站的第一 IP地址, 所述请求信息用于请求所述用 户设备经由所述 WLAN AP与所述基站进行多流聚合的数据传输;
通过所述网络接口向所述基站发送确认信息和所述 WLAN AP为所述用 户设备分配的第二 IP 地址, 所述确认信息用于确认所述用户设备经由所述 WLAN AP与所述基站进行多流聚合的数据传输;
所述处理器通过 IP隧道经由所述 WLAN AP与所述基站进行多流聚合的 数据传输, 所述 IP隧道由所述第一 IP地址和所述第二 IP地址确定。
结合第六方面, 在第六方面的第一种可能的实现方式中, 当所述处理器 通过 IP隧道经由所述 WLAN AP与所述基站进行多流聚合的数据传输时, 所 述处理器具体用于:
通过所述网络接口接收所述基站通过所述 IP隧道, 经由所述 WLAN AP 发送的第一协议数据单元, 删除所述第一协议数据单元的 IP报头, 并根据用 户设备协议栈的聚合层功能处理所述删除了 IP报头的第一协议数据单元, 其 中, 所述 IP报头由所述基站对根据基站协议栈的聚合层功能生成的所述第一 协议数据单元添加; 或
对根据用户设备协议栈的聚合层功能生成的第二协议数据单元添加 IP报 头, 并通过所述网络接口将添加了所述 IP报头的第二协议数据单元经由所述 WLAN AP通过所述 IP隧道发送至所述基站。
结合第六方面的第一种可能的实现方式, 在第六方面的第二种可能的实 现方式中, 当所述处理器通过 IP隧道经由所述 WLAN AP与所述基站进行多 流聚合的数据传输时, 所述处理器具体用于:
通过所述网络接口接收所述基站通过所述 IP隧道, 经由所述 WLAN AP 发送的第一协议数据单元, 根据位置信息从所述第一协议数据单元的 IP报头 中获取与所述第一协议数据单元对应的无线承载信息, 删除所述第一协议数 据单元的 IP报头, 并根据用户设备协议栈中与所述无线承载信息映射的聚合 层实体的聚合层功能处理所述删除了 IP报头的第一协议数据单元; 或,
所述处理器对根据用户设备协议栈的聚合层功能生成的第二协议数据单 元添加 IP报头, 所述 IP报头包括所述处理器根据位置信息添加的所述第二 协议数据单元对应的无线承载信息, 并通过所述网络接口将所述添加了 IP报 头的第二协议数据单元通过所述 IP隧道经由所述 WLAN AP发送至所述基 站, 所述无线承载信息用于所述基站根据所述基站协议栈中与所述无线承载 信息映射的聚合层实体的聚合层功能处理删除了 IP报头的所述第二协议数据 单元。
结合第六方面的第二种可能的实现方式, 在第六方面的第三种可能的实 现方式中,所述位置信息用于指示所述无线承载信息在所述 IP报头中的位置: 所述处理器还用于通过所述网络接口接收所述基站发送的所述位置信 息, 或, 与所述用户设备根据通信协议约定所述位置信息。
结合第六方面的第二种或第三种可能的实现方式, 在第六方面的第四种 可能的实现方式中, 所述无线承载信息包括无线承载标识或逻辑信道标识。
结合第六方面的第四种可能的实现方式, 在第六方面的第五种可能的实 现方式中, 所述 IP报头还包括所述逻辑信道标识对应的逻辑信道的优先级信 息, 或所述无线承载标识对应的无线承载的优先级信息。
结合第六方面的第二种至第五种任一种可能的实现方式, 在第六方面的 第六种可能的实现方式中, 所述处理器根据用户设备协议栈聚合层功能还用 于:
分流所述第二协议数据单元和所述发射单元通过无线蜂窝网络向所述基 站传输的协议数据单元; 或
汇聚所述删除了 IP报头的第一协议数据单元和所述基站通过无线蜂窝网 络向所述接收单元传输的协议数据单元。
结合第六方面的第二种至第六种任一种可能的实现方式, 在第六方面的 第七种可能的实现方式中, 所述聚合层包括以下任意一种:
分组数据汇聚协议 PDCP层、媒体接入控制 MAC层、无线链路控制 RLC 层、 IP层。
结合第六方面的第二种至第七种任一种可能的实现方式, 在第六方面的 第八种可能的实现方式中, 所述第一协议数据单元的 IP报头还包括源 IP地 址和目的 IP地址, 所述源 IP地址为所述第一 IP地址, 所述目的 IP地址为所 述第二 IP地址;
所述第二协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第二 IP地址, 所述目的 IP地址为所述第一 IP地址。
结合第六方面的第一种至第八种任一种可能的实现方式, 在第六方面 的第九种可能的实现方式中, 所述处理器还用于对所述添加了 IP报头的 第二协议数据单元进行完整性保护。
本发明实施例提供一种数据传输的方法及设备, 在数据分流过程中, 由 基站作为汇聚点和分流点, 基站对无线局域网的网络链路的质量变化敏感, 从而保证了业务连续性,提高用户体验,避免了 EPC作为汇聚点和分流点时, 对无线局域网的网络链路的质量变化不敏感导致的业务不连续。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实 施例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面 描述中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明数据传输的场景示意图;
图 2是表示本发明实施例的基站、 UE、 WLAN AP中各个协议栈的通信 关系的示意图;
图 3是表示本发明实施例的基站、 UE、 WLAN AP中各个协议栈的配置 结构的示意图;
图 4为本发明实施例 IPV4报头示意图;
图 5为本发明实施例 IPV6报头示意图;
图 6示出了本发明一实施例的数据传输的方法的示意性流程图; 图 7示出了本发明又一实施例的数据传输的方法的示意性流程图; 图 8为本发明一实施例的基站结构示意图;
图 9为本发明一实施例的用户设备结构示意图;
图 10为本发明又一实施例的基站结构示意图;
图 11为本发明又一实施例的用户设备结构示意图。 具体实施方式 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而 不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做 出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
本发明的技术方案, 可以应用于无线蜂窝网络的各种通信系统, 例如: 全球移动通讯 (Global System of Mobile communication, 简称 GSM) 系统, 码分多址 (Code Division Multiple Access, 简称 CDMA) 系统, 宽带码分多 址(Wideband Code Division Multiple Access Wireless, 简称 WCDMA) 系统, 通用分组无线业务 (General Packet Radio Service, 简称 GPRS ) 系统, 长期 演进(Long Term Evolution, 简称 LTE)系统, 通用移动通信系统(Universal Mobile Telecommunications System, 简称: UMTS ) 等, 本发明并不限定。
在本发明实施例中, 用户设备 (User Equipment, 简称 UE) , 也可称之 为移动终端 (Mobile Terminal) 、 移动用户设备等, 可以经无线接入网 (例 如, Radio Access Network, 简称 RAN)与一个或多个核心网进行通信, 用户 设备可以是移动终端, 如移动电话 (或称为"蜂窝"电话) 和具有移动终端的 计算机, 例如, 可以是便携式、 袖珍式、 手持式、 计算机内置的或者车载的 移动装置, 它们与无线接入网交换语言和 /或数据, 本发明并不限定。
基站, 可以是 GSM或 CDMA中的基站 (Base Transceiver Station, 简称 BTS ) , 也可以是 WCDMA中的基站(Node B ) , 还可以是 LTE中的演进型 基站(eNB或 e-Node B, evolved Node B ) , 本发明并不限定。 基站也包括各 种接入网节点的控制节点, 例如 UMTS中的无线网口控制器(Radio Network Controller, 简称 RNC) , 或管理多个小基站的控制器等。
在本发明实施例中, 为了对无线蜂窝网络的数据进行分流, 在本发明的 通信系统中,需要设置无线局域网接入点(Wireless Local Area Network Access Point, 简称 WLAN AP) , 并且, 该无线局域网接入点, 可以是例如, 无线 保真 (Wireless Fidelity, 简称 WiFi) 中的接入点, 本发明并不限定。
本发明实施例中的 WLAN AP存在两种网络架构: 自主管理架构和集中 管理架构。 自主管理架构又称为 "胖" AP架构, WLAN AP负责用户设备接入、 用户设备断开、 权限认证、 安全策略实施、 数据转发、 数据加密、 网络管理 等任务,自主控制 WLAN AP的配置和无线功能。集中管理架构又称为 "瘦" AP 架构, 管理权一般集中在无线控制器 (Access Controller, 简称 AC) 上。 该 AC管理用户设备的 IP地址、 认证和加密等, WLAN AP只具有加密、 数据 转发、射频功能, 不能独立工作。 WLAN AP与 AC之间采用控制和配置无线 接入点 ( Control And Provisioning of Wireless Access Points, 简称 CAPWAP ) 规范协议。 可选的, 上述 WLAN AP可以与基站一体化设置。 因为本发明实 施例主要涉及 WLAN AP的数据转发功能, 故上述 WLAN AP的两种网络架 构都可以应用。为便于理解和说明,以下以自主管理架构即"胖" AP架构为例, 本发明并不限定。
图 1为本发明数据传输的场景示意图, 该场景针对多流汇聚 (Multiple Stream Aggregation, 简称 MSA) 的通信方式, 采用基站与 UE之间的无线蜂 窝网络传统通信和 WLAP与 UE之间的无线局域网通信的相互融合, 向用户 设备提供高速稳定的服务, 其中, 基站与 WLAN AP之间的为有线通信。 如 图 1所示,基站可以作为数据的分流点和汇聚点,当基站确定通过 WLAN AP 对 UE的数据进行分流时, 通过基站和 UE之间的互联网协议 (internet protocol, 简称 IP)隧道、经由 WLAN AP传输 UE的数据 (包括上行数据或下 行数据)。例如, 在基站和 UE之间建立 IP隧道, IP隧道内传输的数据在基站 和 UE之间通过无线局域网进行路由, 随后对该过程进行详细描述。 上述上 行数据或下行数据可以是无线蜂窝网络空口协议栈中某个协议层的协议数据 单元 (protocol data unit, 简称 PDU) , 本发明并不限定。
以下, 针对 MSA场景进行说明:
在本发明实施例中, 针对基站向 UE传输的下行数据 (以下简称下行传 输) , 该下行数据可以包括第一部分下行数据和第二部分下行数据。 基站将 第一部分下行数据分流到 WLAN AP, 再经由 WLAN AP发送给 UE; 第二部 分下行数据由基站直接通过无线蜂窝网络发送给 UE,从而可以同时利用无线 蜂窝网络和 WLAN网络的传输能力, 实现更高的 UE下行峰值传输速率。
针对 UE 向基站传输的上行数据 (以下简称上行传输) , 该上行数据可 以包括第一部分上行数据和第二部分上行数据。 UE将第一部分上行数据分流 到 WLAN AP,再经由 WLAN AP发送给基站;第二部分上行数据由 UE直接 通过无线蜂窝网络发送给基站,从而可以同时利用无线蜂窝网络和 WLAN网 络的传输能力, 实现更高的 UE上行峰值传输速率。 在下行传输时, 基站可以向 WLAN AP 传输需要分流的数据, 并通过 WLAN AP将该数据发送给 UE; 在上行传输时, UE可以将需要分流的数据 发送给 WLAN AP, 并通过 WLAN AP将该数据发送给基站。 因此, 在本发 明实施例中, 在基站和 WLAN AP中需要配置用于实现彼此之间通信的协议 栈, 同样, 在 UE与 WLAN AP中需要配置用于实现彼此之间通信的协议栈。
图 2是表示本发明实施例的基站、 UE、 WLAN AP中各个协议栈的通信 关系的示意图。 如图 2所示, 在本发明实施例中, 基站与 UE之间可以采用 IP隧道的通讯方式, 进行通信 (具体地说, 是基站与 UE经由 WLAN AP传 输分流的数据) 。
UE与 WLAN AP之间采用无线局域网通信方式。在 UE中, 可以设置用 于实现该无线局域网通信的协议栈, 例如, WiFi协议栈。 由于 UE与 WLAN AP采用无线局域网通信方式,该无线局域网通信方式使用的时频资源不同于 UE与基站之间的无线蜂窝网络通信使用的时频资源, 从而, 能够分流基站与 UE间传输的数据。
WLAN AP和基站之间的通信方式可以结合底层协议, 例如光网络传输、 以太网传输, 非对称数字用户环路接入(Asymmetric Digital Subscriber Line , 简称 ADSL) , 微波中继等通信方式, 实现 WLAN AP和基站之间的通信。
如图 3所述, 图 3是表示本发明实施例的基站、 UE、 WLAN AP中各个 协议栈的配置结构的示意图。 以下分别对基站、 WLAN AP和 UE中的协议栈 配置结构进行说明。
下面, 对该基站中的协议栈配置结构进行说明。
可选地, 该基站具有基站协议栈。 在本发明实施例中, 该基站协议栈可 以具有第一基站协议栈和第二基站协议栈, 该第一基站协议栈用于在基站侧 实现与该用户设备之间通信的数据处理, 该第二基站协议栈用于在基站侧实 现与该 WLAN AP之间通信的数据处理。
应理解, 该第一基站协议栈仅为示例性说明, 本发明并不限定于此, 其 他能够在基站 (或者说, 接入网节点) 侧实现基站与用户设备之间的通信的 协议栈均落入本发明的保护范围内。 并且, 上述基站与用户设备之间的通信 包括能够行使基站功能的接入网节点与用户设备之间的通信, 例如, 能够实 现中继节点 (Relay Node, 简称 RN) 与用户设备之间通信的协议栈同样落入 本发明的保护范围。
作为该第二基站协议栈,可以使用例如光网络传输、以太网传输、 ADSL, 微波中继等通信方式。 应理解, 上述通信方式仅为示例性说明, 本发明并不 限定于此, 其他能够在基站侧实现 WLAN AP与基站之间的通信的协议栈均 落入本发明的保护范围内。 其中, 第二基站协议栈可以通过内部接口直接聚 合在第一基站协议栈的至少一个协议层上, 本发明对此不作限定。
在本发明实施例中, 该第一基站协议栈或第二基站协议栈可以包括用户 面协议栈, 也可以包括用户面协议栈和控制面协议栈, 本发明并不特别限定。 以下, 以该第一基站协议栈或第二基站协议栈为用户面协议栈为例进行说明。
如图 3所示, 在本发明实施例中, 作为示例而非限定, 该第一基站协议 栈可以包括以下协议层:
分组数据汇聚协议 (Packet Data Convergence Protocol简称 PDCP) 层、 无线链路控制(Radio Link Control,简称 RLC)层、媒体接入控制(Media Access Control, 简称 MAC) 层和物理 (Physical, 简称 PHY) 层。 PDCP层主要用 于对信息进行压缩和解压缩、 加密和解密; RLC层主要用于实现自动重传请 求 (Automatic Repeat Request, 简称 ARQ) 的相关功能, 对信息进行分段和 级联或对分段和级联的信息进行重组; MAC层主要用于对传输格式组合的选 择, 实现调度和混合自动重传请求 (Hybrid Automatic Repeat Request, 简称 HARQ) 的相关功能; PHY层主要用于为 MAC层和高层提供信息传输的服 务, 根据选择的传输格式组合进行编码调制处理或解调解码处理。
需要说明的是, 在本实施例中, 以第二基站协议栈聚合在第一基站协议 栈的 PDCP层为例, 但本发明对此不做限定。 gp, 在本发明实施例中, 可以 使第二基站协议栈与上述第一基站协议栈的 PDCP层、 RLC层或 MAC层中 的任一协议层上, 甚至在 PDCP层之上的 IP层相聚合。 在本实施例中, 为了 便于陈述, 将聚合第二基站协议栈的第一基站协议栈的协议层称为聚合层。 本实施例的基站协议栈的聚合层具有聚合数据与分流数据的功能。 例如, 该 聚合层可以用于聚合该用户设备通过 WLAN AP与基站间传输的上行数据和 通过无线蜂窝网络与基站间传输的上行数据; 或, 用于分流: 该聚合层可以 用于分流该基站通过 WLAN AP与用户设备间传输的下行数据, 和通过无线 蜂窝网络与用户设备间传输的下行数据。 在本发明实施例中, 该聚合层可以 为: PDCP层、 RLC层、 MAC层、 或 IP层。 在本发明实施例中, 当聚合层 分别为 PDCP层、 RLC层、 MAC层、 或 IP层时, 对应的聚合层实体可以分 别为 PDCP实体、 RLC实体、 MAC实体、 或 IP实体。
以下以第一基站协议栈的聚合层为例:
在上行传输过程中,第一基站协议栈的聚合层用于将 UE通过 WLAN AP 发送的第一部分上行数据和 UE通过无线蜂窝网络向基站发送的第二部分上 行数据进行汇聚; 在下行传输过程中, 第一基站协议栈的聚合层用于将聚合 层生成的数据分流为第一部分下行数据和第二部分下行数据, 基站将第一部 分下行数据处理后通过 WLAN AP发送给 UE,且通过无线蜂窝网络向 UE发 送第二部分下行数据。 下面进行详细说明。
以基站从核心网获取数据并向用户设备发送为例,基站可以使用 S1接口 与核心网连接。 并且, 可以通过 S1接口从核心网获取数据, 然后通过该第一 基站协议栈从高到低逐协议层处理, 直到该第一基站协议栈的聚合层。 基站 对聚合层处理后输出的第一部分下行数据添加 IP隧道的 IP报头后交给该第 二基站协议栈进行处理, 第二基站协议栈将处理后的第一部分下行数据发送 给 WLAN AP, 从而该 WLAN AP可以结合无线局域网通信方式, 将该第一 部分下行数据发送给 UE。第一基站协议栈还可以将第二部分下行数据通过无 线蜂窝网络发送给 UE。 UE在第一用户设备协议栈的聚合层对该第一部分下 行数据和直接从蜂窝网接收到的第二部分下行数据进行聚合, 在例如对两部 分的数据进行重排序等处理后递交给该第一用户设备协议栈的聚合层的更高 层 (如果该聚合层并非该第一用户设备协议栈的最高层) 。 以第一基站协议 栈或第一用户设备协议栈为 LTE协议栈为例, PHY/MAC/RLC/PDCP依次层 级递增。 对于第一部分下行数据, 例如, 当聚合层是 PDCP层时, 基站从 S1 接口获取下行数据后通过 PDCP层生成第一部分下行数据, 并将添加了 IP报 头的第一部分下行数据交给第二基站协议栈处理, 用于第二基站协议栈将第 一部分下行数据分流到 WLAN AP。 当聚合层是 RLC时, 基站从 S1接口获 取下行数据后通过 PDCP层处理后发送至 RLC层。 该 RLC层生成第一部分 下行数据,并将添加了 IP报头的第一部分下行数据交给第二基站协议栈处理, 用于第二基站协议栈将数据分流到 WLAN AP。
以基站接收用户设备发送的数据并向核心网发送为例, 基站可以使用 S1 接口与核心网连接, WLAN AP可以通过无线局域网通信方式接收 UE发送的 添加了 IP报头的第一部分上行数据。 随后, WLAN AP可以通过它与基站之 间的通信协议将添加了 IP报头的第一部分上行数据发送给基站。基站在第一 基站协议栈的聚合层将删除了 IP报头的该第一部分上行数据和直接从无线蜂 窝网络接收到的 UE发送的第二部分上行数据进行聚合, 在例如对两部分的 数据进行重排序等处理后递交给第一基站协议栈的聚合层的更高层 (如果该 聚合层并非该第一基站协议栈的最高层) , 然后该更高层将处理后的数据通 过 S1接口发送至核心网。对于第一部分上行数据, 以第一基站协议栈为 LTE 协议栈为例, PHY/MAC/RLC/PDCP依次层级递增, 当聚合层为 PDCP层时, PDCP层对该第一部分上行数据和直接从无线蜂窝网络接收到的第二部分上 行数据进行聚合, 处理后基站通过 S1接口发送至核心网。 当聚合层为 RLC 层时, RLC层对该第一部分上行数据和直接从无线蜂窝网络接收到的第二部 分上行数据进行聚合及处理, 随后递交给 PDCP层, PDCP层处理后通过基 站经由 S1接口发送至核心网。
下面, 对该 WLAN AP中的协议栈配置结构进行说明。
可选地,该 WLAN AP具有 WLAN AP协议栈。在本实施例中,该 WLAN AP协议栈可以具有第一 WLAN AP协议栈和第二 WLAN AP协议栈。该第一 WLAN AP协议栈用于在该 WLAN AP侧实现与该基站之间通信的数据处理, 该第二 WLAN AP协议栈用于在该 WLAN AP侧实现与该用户设备之间通信 的数据处理。
作为该第一 WLAN AP协议栈, 可以使用例如光网络传输、 以太网传输、 ADSL, 微波中继等通信方式。 应理解, 上述通信方式仅为示例性说明, 本发 明并不限定于此, 其他能够在 WLAN AP侧实现 WLAN AP与基站之间的通 信的协议栈均落入本发明的保护范围内。 并且, 在本发明实施例中, 该第一 WLAN AP协议栈可以包括用户面协议栈, 也可以包括用户面协议栈和控制 面协议栈, 本发明并不特别限定。 以下, 以该第一 WLAN AP协议栈为用户 面协议栈为例进行说明。
作为该第二 WLAN AP协议栈, 可以列举用于实现该无线局域网通信的 协议栈, 例如, WiFi协议栈。 应理解, 该 WiFi协议栈仅为示例性说明, 本 发明并不限定于此, 其他能够在 WLAN AP (或者说, 无线局域网接入节点) 侧实现 WLAN AP与用户设备之间的通信的协议栈均落入本发明的保护范围 内。
如图 3所示, 在本发明实施例中, 作为示例而非限定, 该 WiFi协议栈可 以包括: 逻辑链路控制(Logical Link Control, 简称 LLC)层、 媒体访问控制 ( Media Access Control,简称 MAC )层、物理层( Physical Layer,简称 PHY )。 其中, LLC层的主要功能是进行传输可靠性保障和控制、数据包分段与重组、 数据包的顺序传输。 MAC层的主要功能是为用户在不可靠媒介上提供可靠的 数据传输, 提供分布式协调功能、 集中式控制访问机制、 以及加密服务、 侦 听与回避、 功率控制等。 PHY层主要功能是执行物理层汇聚流程, 以将数据 块映射到合适的物理帧格式, 进行编码调制处理或解调解码处理等。
以 WLAN AP从基站获取数据并向用户设备发送为例, WLAN AP可以 通过第一 WLAN AP协议栈获取基站需要发送给 UE的数据。随后, WLAN AP 可以通过无线局域网通信方式,将该数据发送给 UE, 随后对该过程进行详细 说明。
以 WLAN AP从用户设备获取数据并向基站发送为例, WLAN AP可以 通过无线局域网通信方式获取 UE需要发给基站的数据。随后, WLAN AP可 以通过第一 WLAN AP协议栈将该数据发送给基站, 随后对该过程进行详细 说明。
下面, 对该 UE中的协议栈配置结构进行说明。
可选地, 该用户设备具有用户设备协议栈, 在本实施例中, 该用户设备 协议栈具有第一用户设备协议栈和第二用户设备协议栈, 该第一用户设备协 议栈用于在该用户设备侧实现与该基站之间通信的数据处理。 该第二用户设 备协议栈用于在该用户设备侧实现与该 WLAN AP之间通信的数据处理。 其 中,该第二用户设备协议栈与该第一用户设备协议栈的至少一个协议层相连。
应理解, 该第一用户设备协议栈仅为示例性说明, 本发明并不限定于此, 其他能够在用户设备侧实现基站与用户设备之间的通信的协议栈均落入本发 明的保护范围内。 并且, 上述基站与用户设备之间的通信包括能够行使基站 功能的接入网节点与用户设备之间的通信。 例如, 能够实现中继节点 (Relay Node, 简称 RN) 与用户设备之间通信的用户设备协议栈同样落入本发明的 保护范围。 如图 3所示, 作为示例而非限定, 上述第一用户设备协议栈可以包括以 下协议层:分组数据汇聚协议(Packet Data Convergence Protocol,简称 PDCP) 层、无线链路控制(Radio Link Control,简称 RLC)层、媒体接入控制(Media Access Control, 简称 MAC) 层和物理 (Physical, 简称 PHY) 层。 PDCP层 主要用于对信息进行压缩和解压缩 /加密和解密; RLC层主要用于实现自动重 传请求 (Automatic Repeat Request, 简称 ARQ) 的相关功能, 对信息进行分 段和级联或对分段和级联的信息进行重组; MAC层主要用于对传输格式组合 的选择, 实现调度和混合自动重传请求 (Hybrid Automatic Repeat Request, 简称 HARQ) 的相关功能; PHY层主要用于为 MAC层和高层提供信息传输 的服务, 根据选择的传输格式组合进行编码调制处理或解调解码处理。
作为该第二用户设备协议栈, 可以列举用于实现无线局域网通信的协议 栈, 例如, WiFi协议栈。 应理解, 该 WiFi协议栈仅为示例性说明, 本发明 并不限定于此, 其他能够在用户设备侧实现 WLAN AP与用户设备之间的通 信的协议栈均落入本发明的保护范围内。
如图 3所示, 在本发明实施例中, 作为示例而非限定, 该 WiFi协议栈可 以包括: 逻辑链路控制 LLC层、媒体访问控制 MAC层、物理层 PHY。其中, LLC层的主要功能是进行传输可靠性保障和控制、 数据包分段与重组、 数据 包的顺序传输。 MAC层的主要功能是为用户在不可靠媒介上提供可靠的数据 传输, 提供分布式协调功能、 集中式控制访问机制、 以及加密服务、 侦听与 回避、 功率控制等。 物理层主要功能是执行物理层汇聚流程, 以将数据块映 射到合适的物理帧格式, 进行编码调制处理或解调解码处理等。
需要说明的是, 在本实施例中, 以第二用户设备协议栈聚合在第一用户 设备协议栈的 PDCP层为例, 但本发明对此不做限定。 gp, 在本发明实施例 中,可以使第二用户设备协议栈与上述第一用户设备协议栈的 PDCP层、 RLC 层或 MAC层中的任一协议层, 甚至 PDCP层之上的 IP层相聚合。 在本实施 例中, 为了便于陈述, 将聚合第二用户设备协议栈的第一用户设备协议栈 的协议层称为用户设备协议栈的聚合层。 本实施例的用户设备协议栈的聚合 层具有聚合数据与分流数据的功能。 例如, 该聚合层可以用于聚合该基站 通过 WLAN AP与用户设备间传输的下行数据和通过无线蜂窝网络与用户 设备间传输的下行数据; 或, 用于分流: 该聚合层可以用于分流该用户设 备通过 WLAN AP与基站间传输的上行数据, 和通过无线蜂窝网络与基站 间传输的上行数据。 在本实施例中, 该聚合层可以为: PDCP层、 RLC层、 MAC层、 或 IP层。 在本发明实施例中, 当聚合层分别为 PDCP层、 RLC 层、 MAC层、或 IP层时,对应的聚合层实体可以分别为 PDCP实体、 RLC 实体、 MAC实体、 或 IP实体。
以下以第一用户设备协议栈的聚合层为例:
在上行传输过程中, 第一用户设备协议栈的聚合层用于将聚合层生成的 数据分流为第一部分上行数据和第二部分上行数据, UE将第一部分上行数据 处理后通过 WLAN AP发送给 UE,且通过无线蜂窝网络向基站发送第二部分 上行数据。 在下行传输中, 第一用户设备协议栈的聚合层用于将基站通过 WLAN AP发送的第一部分下行数据和基站通过无线蜂窝网络发送的第二部 分下行数据进行汇聚。 下面进行详细说明。
以 UE通过 WLAN AP向基站发送数据为例, UE可以通过第一用户设备 协议栈从高到低逐协议层处理该数据, 直到该第一用户设备的聚合层。 用户 设备对聚合层处理后输出的第一部分上行数据添加 IP隧道的 IP报头后, 交 由第二用户设备协议栈进行处理, 经由第二用户设备协议栈发送至 WLAN AP, 用于该 WLAN AP将该第一部分上行数据发送给基站。 可选地, 用户设 备将聚合层处理后输出的第二部分上行数据通过无线蜂窝网络发送给基站。 基站在第一基站协议栈的聚合层对该第一部分上行数据和直接从无线蜂窝网 络收到的第二部分上行数据进行聚合, 处理后递交给该第一基站协议栈的聚 合层的更高层 (如果该聚合层并非该第一基站协议栈的最高层) 。 具体的实 施例与基站侧类似, 本实施例此处不再赘述。
以 UE接收基站通过 WLAN AP发送的数据为例, UE可以通过无线局域 网通信方式接收 WLAN AP发送的第一部分下行数据。 UE在第一用户设备协 议栈的聚合层对删除了 IP报头的该第一部分下行数据和直接从无线蜂窝网络 接收到的第二部分下行数据进行聚合, 然后递交给该第一用户设备协议栈的 聚合层的更高层 (如果该聚合层并非该第一基站协议栈的最高层) 。 具体的 实施例与基站侧类似, 本实施例此处不再赘述。
下面, 对基站和 UE在根据本发明实施例的数据传输的方法进行数据传 输时的动作分别进行详细说明。 为了使得下面对数据传输的方法的描述更加 清楚和更容易理解, 首先对该方法中涉及到的一些概念说明如下: 协议数据单元: 在通信系统中, 两个相邻协议层之间传递的数据被称为 该相邻协议层中较高层的协议数据单元 (protocol data unit, 简称 PDU) 。 以 LTE协议栈为例, PDCP层经过头压缩、 加密等处理后递交给 RLC层的数据 称为 PDCP PDU。 相反, RLC接收到 MAC层递交上来的数据并经过数据分 段重组、重排序后递交给 PDCP的数据单元也叫 PDCP PDU。 为了便于区分, 以及便于详细描述通过 WLAN AP进行分流的过程, 在基站侧, 针对第一基 站协议栈的聚合层输出的第一部分下行协议数据单元称为第一协议数据单 元, 在用户设备侧, 针对第一用户设备协议栈的聚合层输出的第一部分上行 协议数据单元称为第二协议数据单元。
IP报头: 该 IP报头可以包括源地址、 目的地址、 无线承载信息。
本发明实施例中, 当协议数据单元添加 IP报头后, 该源地址和目的地址 可用于确定 UE和基站之间的 IP隧道。因此, 该添加了 IP报头的协议数据单 元可以在由源地址和目的地址确定的 IP隧道中传输。
本发明实施例中,无线承载信息用于指示协议数据单元所属的无线承载。 对每一个无线承载, 聚合层都会生成一个聚合层实体来负责该无线承载在该 聚合层的处理, 聚合层实体完成聚合层定义的功能, 例如, 聚合层实体可以 完成聚合层定义的聚合数据与分流数据的功能。
无线承载信息可以包括无线承载标识或逻辑信道标识。
可选的, 当无线承载信息为逻辑信道标识时, 由于逻辑信道与无线承载 具有映射关系, IP隧道接收端(例如,上行传输时, 该 IP隧道接收端为基站; 下行传输时, 该 IP隧道接收端为用户设备)根据逻辑信道标识可以获知无线 承载标识。 以聚合层为 PDCP 层为例, 无线承载标识所对应的无线承载与 PDCP层相对应或有映射关系。 具体的, 该无线承载与 PDCP层的 PDCP实 体具有——对应关系。 gP, 每一个 PDCP 实体都对应一个无线承载, PDCP 实体的数目由建立的无线承载的数目所决定。
位置信息:用于指示聚合层协议数据单元对应的无线承载信息在 IP报头 中的位置。
在具体实现过程中, 无线承载信息在 IP报头中的位置信息可以为用户设 备与基站根据通信协议预先约定 (例如, 用户设备可以根据协议约定的方式 获取位置信息) , 也可以由基站向用户设备发送。
可选的, 对于第一协议数据单元的 IP报头, 位置信息用于指示第一协议 数据单元对应的第一无线承载信息在第一协议数据单元的 IP报头中的位置。 第一无线承载信息用于指示第一协议数据单元所属的无线承载, 包括第一无 线承载标识或第一逻辑信道标识。 当第一无线承载信息为第一逻辑信道标识 时, 由于逻辑信道与无线承载具有映射关系, UE根据第一逻辑信道标识可以 获知第一无线承载标识。
可选的, 对于第二协议数据单元的 IP报头, 位置信息用于指示第二协议 数据单元对应的第二无线承载信息在第二协议数据单元的 IP报头中的位置。 第二无线承载信息用于指示第二协议数据单元所属的无线承载, 包括第二无 线承载标识或第二逻辑信道标识。 当第二无线承载信息为第二逻辑信道标识 时, 由于逻辑信道与无线承载具有映射关系, 基站根据第二逻辑信道标识可 以获知第二无线承载标识。
可选地, IP报头还可以包括逻辑信道标识对应的逻辑信道的优先级信 息, 或所述无线承载标识对应的无线承载的优先级信息。 本实施例中, 该 优先级信息可由差分服务代码点 (Differentiated Services Code Point, 简称 DSCP) 表示。 该 DSCP可以位于 IP报头的服务类别 (Type of Service, 简称 T0S ) 字节中, 例如可以利用 6个比特位通过编码值来区分数据传输的优先 级顺序。
具体地, 假设 WLAN AP通过 WiFi协议栈进行数据传输的过程中, 支持服 务质量 (Quality of Service, 简称: QoS ) 的传输, 则同样支持 QoS的用户设 备将在接入无线局域网络时与该 WLAN AP协商 QoS参数。 可选的, 用户设备 会向基站上报 WLAN AP是否支持 QoS的传输。
当 WLAN AP支持 QoS的下行传输时, 基站根据第一协议数据单元所在逻 辑信道的优先级或无线承载的优先级填写 IP报头中的 DSCP。该无线承载或逻 辑信道的优先级与 DSCP值的映射关系可通过协议事先约定。 在 WLAN AP的 WiFi 协议栈中, IP报头中的 DSCP值与 WiFi 协议栈中 MAC层的用户优先级 有映射关系。 WLAN AP接收到基站发送过来的第一协议数据单元后, 根据 IP 报头中的 DSCP值将第一协议数据单元放入对应用户优先级的发送缓冲区,不 同用户优先级的发送缓冲区中的数据具有不同的调度优先级。 当 WLAN AP支持 QoS的上行传输时, UE根据第二协议数据单元所在的无 线承载优先级或逻辑信道的优先级填写 IP报头中的 DSCP。该无线承载或逻辑 信道的优先级与 DSCP值的映射关系可通过协议事先约定。 在 WLAN AP的 WiFi协议栈中, IP报头中的 DSCP值与 WiFi 协议栈中 MAC层的用户优先级有 映射关系。 WLAN AP接收到 UE发过来的第二协议数据单元后, 根据 IP报头 中的 DSCP值将第二协议数据单元放入对应用户优先级的发送缓冲区,不同用 户优先级的发送缓冲区中的数据具有不同的调度优先级。
例如, 当该 IP报头为 IPV4报头时, 图 4为本发明实施例 IPV4报头示意 图。 IPV4报头中可以包括源地址、 目的地址、 无线承载信息、 DSCP。 其中, 无线承载信息可以根据协议约定或基站发送,位于 IP报头中的"版本"、"长 度"或"服务类型"等字段中; DSCP可以位于 IP报头的服务类型(ToS )字段 中。 该 IPV4用于标识采用的 IP协议的版本号。
当该 IP报头为 IPV6报头时,图 5为本发明实施例 IPV6报头示意图。 IPV6 报头中可以包括源地址、 目的地址、 无线承载信息、 DSCP。 其中, 无线承载 信息位于 IP报头中的"版本"或"数据流标签"等字段中; DSCP可以位于 IP报 头的传输流类型 (Traffic Class ) 字段中。 该 IPV6用于标识采用的 IP协议的 版本号。
可选地, 为了保证无线承载的 QoS, 还可对下行数据和上行数据进行如 下处理。
由于下行数据既可以由无线蜂窝网络直接传输给 UE,也可以经由 WLAN
AP网络传输给 UE,当 WLAN网络传输的第一部分下行数据中的若干数据包 的服务质量 (Quality of Service, 简称: QoS ) 不能满足要求时, 则可以使用 备用 WLAN AP, 或将该第一部分下行数据中的若干数据包切换到无线蜂窝 网络, 或减少分流给 WLAN AP的下行数据的数据量等机制来确保无线承载 的 QoS。
由于上行数据既可以由无线蜂窝网络传输给基站,也可以由 WLAN网络 传输给基站,当 WLAN网络传输的第一部分上行数据中的若干数据包的服务 质量 (Quality of Service, 简称: QoS ) 不能满足时, 则可以使用备用 WLAN AP, 或将该第一部分上行数据中的若干数据包切换到无线蜂窝网络, 或减少 分流给 WLAN AP的上行数据的数据量等机制来确保无线承载的 QoS。 图 6示出了本发明一实施例的数据传输的方法的示意性流程图, 该方法 由通信系统中的基站执行。 该通信系统还包括 WLAN AP和用户设备, 该基 站与用户设备之间经由 WLAN AP设有 IP隧道。 该方法包括:
601、 基站向用户设备发送请求信息, 无线局域网接入点 WLAN AP 的标识,和基站的第一 IP地址,请求信息用于请求用户设备经由 WLAN AP 与基站进行多流聚合的数据传输;
602、基站接收用户设备发送的确认信息和 WLAN AP为用户设备分配 的第二 IP地址, 确认信息用于确认用户设备经由 WLAN AP与基站进行 多流聚合的数据传输;
603、 基站通过 IP隧道经由 WLAN AP与用户设备进行多流聚合的数据 传输, IP隧道由第一 IP地址和第二 IP地址确定。
可选的, 当基站确定通过 WLAN AP进行分流时, 基站向 UE发送请求 信息、 WLAN AP的标识和所述基站的第一 IP地址。 基站确定通过 WLAN
AP进行分流包括如下可能的实现方式:
一种可能的实现方式为:基站根据 UE的签约信息,指示 UE对 WLAN AP 进行测量并将测量结果上报给基站。 随后, 基站根据该测量结果 (例如: UE 测量到 WLAN AP对应的 WiFi网络信号较强),确定通过 WLAN AP进行分 流。
另一种可能的实现方式为: 基站根据网络负载以及 WLAN AP的分布, (例如, 在网络负载较重的区域分布有 WLAN AP) , 确定通过 WLAN AP 进行分流。
可选地, 基站向用户设备发送的请求信息、 WLAN AP的标识和所述基 站的第一 IP 地址, 可以在基站发送给用户设备的各种消息中携带。 在具 体实现过程中, 可以在同一个消息中携带该请求信息、 WLAN AP的标识 和基站的第一 IP地址, 也可以将该请求信息、 WLAN AP的标识和基站的 第一 IP 地址由多个消息携带。 本发明本实施例中, 携带上述请求信息、 WLAN AP的标识和基站的第一 IP地址的消息的数量和类型不作限定,上 述不同消息所发送的先后顺序也不做限定。
可选的, 上述 WLAN AP的标识可以为 WLAN AP的基本服务集标识 (Basic Service Set Identifier, 简称 BSSID ) 或为服务集标识 (Service Set Identifier, 简称 SSID) 。
应理解, 基本服务集(Basic Service Set, 简称 BSS )是 WLAN网络的一 个基本组件, 通常由一个接入点 AP和多个工作站 (Station, 简称 STA) 组 成。 扩展服务集(Extended Service set, 简称 ESS )是由多个 BSS组成的。 其 中, 每一个 BSS都有唯一的标识(Identity, 简称 ID) , g卩 BSS ID或 BSS标 识。 由于 BSS通常有一个接入点 AP, 因此 BSS标识通常为该接入点 AP的 标识, 例如可以为 AP的媒体接入控制 (Media Access Control, 简称 MAC) 地址。
还应理解, 对于 WLAN网络来说, 网络侧服务设备为 AP, 用户侧终端 设备为 STA, 而对于无线蜂窝网络来说, 网络侧服务设备为基站, 用户侧终 端设备为 UE。 在本发明实施例的 WLAN和无线蜂窝网络组成的异构网络场 景中, 用户侧终端设备可以称为 UE或 STA, 能够接收两个网络的服务, 为 了方便描述, 以下统称为 UE。
可选的, UE根据 WLAN AP的标识向 WLAN AP发送认证请求,在认证 通过之后, UE向基站发送确认信息和 WLAN AP为用户设备分配的第二 IP 地址。
在 602中, UE向基站发送的第二 IP地址为 WLAN AP分配的、 用于多 流聚合的 IP地址。例如,对于 UE向 WLAN AP发送的上行数据, WLAN AP 对来自第二 IP地址的该 UE所发送的数据递交给基站进行聚合。 又如, 对于 基站向 WLAN AP发送的下行数据, WLAN AP对目的地址为第二 IP地址的 该基站所发送的数据传输给 UE进行聚合。
在 603中, 基站与 UE通过 IP隧道, 经由 WLAN AP进行多流聚合的数 据传输可以包括上行数据传输和下行数据传输。 为便于解释和说明, 以下对 上行数据和下行数据统称为协议数据单元, 但本发明对此不做限定。
可选的, 本发明实施例的下行传输过程中, 基站对基站协议栈的聚合层 生成的第一协议数据单元添加 IP报头, 并将添加了 IP报头的第一协议数据 单元通过 IP隧道, 经由 WLAN AP发送至 UE。 该基站协议栈可以为第一基 站协议栈。
可选的, 对第一协议数据单元添加的 IP报头中的源地址为第一 IP地址, 目的地址为第二 IP地址。 可选的,上述 IP报头包括基站根据位置信息添加的第一协议数据单元 对应的无线承载信息, 该无线承载信息用于用户设备指示用户设备协议栈 中与无线承载信息映射的聚合层实体处理删除了 IP 报头的第一协议数据 单元。 在本发明实施例中, 聚合层可以包括聚合层实体, 该聚合层实体与 无线承载信息有一一对应关系或对应指定的逻辑信道。 故, 该无线承载信 息可以用于指示用户设备协议栈中与无线承载信息映射的聚合层实体处 理删除了 IP报头的第一协议数据单元。
在具体实现过程中,基站向 WLAN AP发送添加了 IP报头的第一协议数 据单元, WLAN AP在接收到添加了 IP报头的第一协议数据单元之后, 获取 IP报头中的目的地址即 WLAN AP为 UE分配的第二 IP地址。 因为第二 IP 地址与 UE的地址有映射关系, 故 WLAN AP可以根据第二 IP地址确定 UE 的地址如 MAC地址, 通过 WiFi协议将第一协议数据单元发送至 UE。 因此, 对于 WLAN AP而言,不需要对带 IP报头的第一协议数据单元进行特殊处理, 根据 WiFi协议栈进行处理即可, 从而 WLAN AP本身也不需要进行改进。上 述特殊处理可以理解为当 WLAN AP的协议栈改变后例如不采用 WiFi协议栈 时, WLAN AP对于带 IP报头的第一协议数据单元所做的处理包括但不限于 映射, 转换等, 且不同于 WiFi协议栈的处理方式; 或 WLAN AP需要根据与 基站约定的指示处理带 IP报头的第一协议数据单元。
可选的, 本发明实施例的上行传输中, 所述基站通过所述 IP隧道, 接 收用户设备经由 WLAN AP发送的第二协议数据单元, 删除第二协议数据 单元的 IP报头, 并指示基站协议栈的聚合层处理删除了 IP报头的第二协 议数据单元, 其中, IP报头由用户设备对用户设备协议栈的聚合层生成 的第二协议数据单元添加。 该基站协议栈可以为第一基站协议栈。
可选的, 第二协议数据单元的 IP报头中的源地址为第二 IP地址, 目的 地址为第一 IP地址。
可选的, 基站通过 IP隧道, 接收用户设备经由 WLAN AP发送的第二 协议数据单元后, 根据位置信息从第二协议数据单元的 IP报头中获取与 第二协议数据单元对应的无线承载信息, 删除第二协议数据单元的 IP 报 头,并指示基站协议栈中与无线承载信息映射的聚合层实体处理删除了 IP 报头的第二协议数据单元。 在本发明实施例中, 聚合层可以包括聚合层实 体, 该聚合层实体与无线承载信息有一一对应关系或对应指定的逻辑信 道。 故, 该无线承载信息可以用于指示基站协议栈中与无线承载信息映射 的聚合层实体处理删除了 IP报头的第一协议数据单元。
在具体实现过程中, UE向 WLAN AP发送添加了 IP报头的第二协议数 据单元, WLAN AP在接收到添加了 IP报头的第二协议数据单元后, 根据 IP 报头中的目的地址即基站向 UE发送的基站的第一 IP地址, 可以直接将第二 协议数据单元转发至基站。 对于 WLAN AP而言, 不需要对添加了 IP报头的 第二协议数据单元进行处理, WLAN AP本身也不需要进行改进。
可选的, 基站对 WLAN AP分流的协议数据单元进行区分处理。 一种方 式为: 当 WLAN AP向基站发送数据的 IP报头中的目的地址不是基站的第一 IP地址时, 基站将该数据传输到互联网中, 例如传输到目的地址指示的路由 器或各种服务器。 上述数据可以为 WiFi only数据或 WiFi认证等信令。 另一 种方式为: 当 WLAN AP向基站发送的数据的 IP报头中的目的地址是基站的 第一 IP地址时, 删除该数据的 IP报头, 并指示基站协议栈的聚合层处理删 除了 IP报头的数据。
可选的, 上述基站协议栈的聚合层用于分流第一协议数据单元和基站 通过无线蜂窝网络向所述用户设备传输的协议数据单元; 或, 汇聚删除了 IP 报头的第二协议数据单元和用户设备通过无线蜂窝网络向基站传输的 协议数据单元。
本发明实施例提供的数据传输方法, 由基站作为汇聚点和分流点, 基站 对无线局域网的网络链路的质量变化敏感, 保证了业务连续性, 提高用户体 验, 避免了 EPC作为汇聚点和分流点时, 对无线局域网的网络链路的质量变 化不敏感导致的业务不连续。
图 7示出了本发明又一实施例的数据传输的方法的示意性流程图, 该方 法通信系统中的用户设备执行, 该通信系统还包括基站和 WLAN AP, 该基 站与该用户设备之间经由 WLAN AP设有 IP隧道。 该方法包括:
701、 用户设备接收基站发送的请求信息, 无线局域网接入点 WLAN AP的标识和基站的第一 IP地址,请求信息用于请求用户设备经由 WLAN AP与基站进行多流聚合的数据传输;
702、用户设备向基站发送确认信息和 WLAN AP为用户设备分配的第 二 IP地址, 确认信息用于确认用户设备经由 WLAN AP与基站进行多流 聚合的数据传输;
703、 用户设备通过 IP隧道经由 WLAN AP与基站进行多流聚合的数 据传输, IP隧道由第一 IP地址和第二 IP地址确定。
可选地, UE在收到基站发送的请求信息、 WLAN AP的标识和基站的第 一 IP 地址之后, 根据通信协议接入 WLAN AP。 首先, UE通过侦听信标 (beacon) 帧或发送探寻 (Probe) 帧的方式发现与 WLAN AP的标识对应的 WLAN AP, 并接入该 WLAN AP。 UE接入 WLAN AP的方式, 例如可以通 过与 WLAN AP的认证和关联 (Association) , 完成鉴权等过程, 本发明对此 不做限定。
在具体实现过程中, 当基站向 UE发送了请求信息, UE向基站发送了确 认信息之后, 若 UE有向基站发送的上行数据, 在本实施例中, 即为第二协 议数据单元, 则 UE向 WLAN AP发送添加了 IP报头的第二协议数据单元。
WLAN AP在接收到添加了 IP报头的第二协议数据单元之后,根据 IP报 头中的目的地址即基站向 UE发送的基站的第一 IP地址, 直接将第二协议数 据单元转发至基站。 对于 WLAN AP而言, 不需要对添加了 IP报头的第二协 议数据单元进行特殊处理(即作为普通 IP包进行处理), WLAN AP自身也不 需要进行改进。
在本实施例中, 对 UE在无线蜂窝网络和无线局域网络中通信所产生的 费用均由基站或移动通信网的核心网设备统一计算。 但是, 如果是通过认证 服务器对 UE进行认证,则认证服务器也会对 UE在无线通讯过程中产生的费 用进行计算。 认证服务器是无线通讯系统中一个重要组成部分, 也可称为 AAA (英文全称为 Authentication, Authorization, Accounting ; 中文为验证、 授权和记账) 服务器, 例如具有可以处理用户访问请求的服务器程序。 其主 要作用例如为: 用于管理哪些用户可以访问 WLAN网络或获得访问权限, 具 有访问权的用户可以得到哪些服务, 如何对正在使用网络资源的用户进行记 账。
因此, 为了避免认证服务器的重复计费, 可通过如下方式实现: 方式一: UE与 WLAN AP之间执行 SAE (Simultaneous authentication of equals )或 PSK ( Pre-shared Key )认证。 对 SAE或 PSK认证, 基站通过操作 管理维护 (Operation Administration and Maintenance, 简称 OAM) 等途径获 得初始密钥, 并将该初始密钥通知 UE。 UE与 WLAN AP之间通过初始密钥 进行认证和密钥衍生, 即不用跟认证服务器交互即可实现认证。
方式二: UE 与 WLAN AP 之间执行可扩展认证协议-认证和密钥协商 ( Extensible Authentication Protocol - Authentication and Key Agreement, 简禾尔 EAP-AKA) 认证, 该认证通过认证服务器实现。 此时, 当基站或 UE确定通 过 WLAN AP进行分流时,基站或 UE指示认证服务器不对 UE在无线通讯过 程中产生的费用进行计费。 例如, 基站或 UE 向认证服务器发送指示消息, 该指示消息包括 UE的标识,用于指示认证服务器不对与该 UE的标识对应的 UE在无线通过过程中产生的费用进行计费。
方式三: 由基站代理认证服务器, 即基站具有认证服务器的功能。 同时, UE与基站之间执行 EAP-AKA认证。
可选地, 本发明实施例的下行传输过程中, UE接收基站通过 IP隧道, 经由 WLAN AP发送的第一协议数据单元后,删除第一协议数据单元的 IP报 头,并指示用户设备协议栈的聚合层处理删除了 IP报头的第一协议数据单元, 其中, IP报头由基站对基站协议栈的聚合层生成的协议数据单元添加。 该用 户设备协议栈可以为第一用户设备协议栈。
可选地, 对第一协议数据单元添加的 IP报头中的源地址为第一 IP地址, 目的地址为第二 IP地址。
可选地,用户设备接收基站通过 IP隧道经由 WLAN AP发送的第一协 议数据单元, 根据位置信息从第一协议数据单元的 IP 报头中获取与第一 协议数据单元对应的无线承载信息, 删除第一协议数据单元的 IP 报头, 并指示用户设备协议栈中与无线承载信息映射的聚合层实体处理删除了
IP报头的第一协议数据单元。 在本发明实施例中, 聚合层可以包括聚合层 实体, 该聚合层实体与无线承载信息有一一对应关系或对应指定的逻辑信 道。 故, 该无线承载信息可以用于指示用户设备协议栈中与无线承载信息 映射的聚合层实体处理删除了 IP报头的第一协议数据单元。
在具体实现过程中, 基站通过 IP隧道向 WLAN AP发送添加了 IP报头 的第一协议数据单元, WLAN AP在接收到添加了 IP报头的第一协议数据单 元之后, 根据 IP报头中的目的地址即 WLAN AP为 UE分配的第二 IP地址, 确定 UE的 MAC地址,通过 WiFi协议将带 IP报头的第一协议数据单元分流 至 UE, 因此, 对于 WLAN AP而言, 不需要对带 IP报头的第一协议数据单 元进行特殊处理, WLAN AP本身也不需要进行改进。
UE在接收到 WLAN AP分流的添加了 IP报头的第一协议数据单元之后, 删除第一协议数据单元的 IP报头, 并指示第一用户设备协议栈的聚合层处理 删除了 IP报头的第一协议数据单元。 可选地, 用户设备对 WLAN AP分流的 数据进行区分处理, 对于 IP 目的地址不是用户设备第二 IP地址的数据, 则 用户设备不将其交给第一用户设备协议栈的聚合层进行处理。
可选地, 本发明实施例的在上行传输过程中, UE对用户设备协议栈的聚 合层生成的第二协议数据单元添加 IP报头, 并将添加了 IP报头的第二协议 数据单元通过所述 IP隧道, 经由 WLAN AP发送至所述基站。
可选地, 对第二协议数据单元添加的 IP报头中的源地址为第二 IP地址, 目的地址为第一 IP地址。
可选地, 上述 IP报头包括用户设备根据位置信息添加的第二协议数据单 元对应的无线承载信息, 该无线承载信息用于基站指示基站协议栈中与无线 承载信息映射的聚合层实体处理删除了 IP报头的所述第二协议数据单元。在 本发明实施例中, 聚合层可以包括聚合层实体, 该聚合层实体与无线承载信 息有一一对应关系或对应指定的逻辑信道。 故, 该无线承载信息可以用于指 示基站协议栈中与无线承载信息映射的聚合层实体处理删除了 IP报头的第二 协议数据单元。
可选地, 上述用户设备协议栈的聚合层用于: 分流所述第二协议数据单 元和所述用户设备通过无线蜂窝网络向所述基站传输的协议数据单元; 或汇 聚所述删除了 IP报头的第一协议数据单元和所述基站通过无线蜂窝网络向所 述用户设备传输的协议数据单元。
本发明实施例提供的数据传输方法, 在数据分流过程中, 由基站作为 汇聚点和分流点, 基站对无线局域网的网络链路的质量变化敏感, 保证了业 务连续性, 提高用户体验, 避免了 EPC作为汇聚点和分流点时, 对无线局域 网的网络链路的质量变化不敏感导致的业务不连续。
下面以 PDCP层为聚合层为例, 结合图 3所示的协议栈, 对图 6至图 7 所示的实施例进行详细说明。 以下主要说明基站通过 IP隧道, 经由 WLAN AP向 UE分流下行数据的 传输过程。
基站对第一基站协议栈的 PDCP层的第一协议数据单元添加 IP报头, IP报 头中包括基站根据位置信息添加的第一协议数据单元对应的第一无线承载信 息, IP报头中的源地址为第一 IP地址, 目的地址为第二 IP地址。然后基站将添 加了 IP报头的第一协议数据单元经过第二基站协议栈的 L2层和 L1层, 传输到 WLAN AP的第一 WLAN AP协议栈的 L1层, 再由第一 WLAN AP协议栈的 L1 和 L2层处理后, 还原出添加了 IP报头的第一协议数据单元, 交给第二 WLAN AP协议栈进行处理。
第二 WLAN AP协议栈对获取到的添加了 IP报头的第一协议数据单元添 加 LLC报头以实现流量控制等功能, 再根据 IP报头中的目的地址确定目的地 址是否为 WLAN AP为 UE分配的第二 IP地址。当确定该目的地址是第二 IP地址 时,经由第二 WLAN AP协议栈的 MAC层对上述添加了 IP报头的第一协议数据 单元再添加 MAC报头以实现调度寻址、 QoS等功能, 并生成 MAC协议数据单 元 (MAC Protocol Data Unit, 简称 MPDU) , 然后通过第二 WLAN AP协议栈 的 PHY层传输给 UE的第二用户设备协议栈的 PHY层。
UE的第二用户设备协议栈的 PHY层接收到上述 MPDU后, 通过第 二用户设备协议栈的 MAC层和 LLC层依次删除 MAC报头和 LLC报头, 获取添加了 IP报头的第一协议数据单元。 随后, UE根据 IP报头中的源 IP地址判断该第一协议数据单元是否是从基站的第一 IP地址传输过来的 数据, 即是否是通过 IP隧道传输的数据。 当 UE确定上述第一协议数据单 元是通过 IP隧道传输的数据时, 删除该第一协议数据单元中的 IP报头, 根据位置信息从第一协议数据单元中的 IP 报头中获取与第一协议数据单 元对应的第一无线承载信息, 并指示第一用户设备协议栈的 PDCP层中与 第一无线承载信息对应的 PDCP实体处理删除了 IP报头的第一协议数据 单元。
以下主要说明 UE通过 IP隧道经由 WLAN AP向基站分流上行数据的传 输过程。
UE对第一用户设备协议栈 PDCP层的第二协议数据单元添加 IP报头, IP 报头中包括 UE根据位置信息添加的第二协议数据单元对应的第二无线承载 信息, IP报头中的源地址为第二 IP地址, 目的地址为第一 IP地址。 然后, UE 的第二用户设备协议栈将添加了 IP报头的第一协议数据单元添加 LLC报头, UE的第二用户设备协议栈的 MAC层根据 IP报头中的目的地址对第二协议数 据单元添加 MAC报头并生成 MAC协议数据单元(MAC Protocol Data Unit, 简 称 MPDU) , 然后通过第二用户设备协议栈的 PHY层传输给 WLAN AP的第二 WLAN AP协议栈的 PHY层。
WLAN AP的第二 WLAN AP协议栈的 PHY层接收到上述 MPDU后, 通过 第二 WLAN AP协议栈的 MAC层和 LLC层依次删除 MAC报头和 LLC报头, 获 取添加了 IP报头的第二协议数据单元, 然后 WLAN AP将添加了 IP报头的第二 协议数据单元经过第一 WLAN AP协议栈的 L2层和 L1层,传输到基站的第二基 站协议栈的 L1层和 L2层。 随后基站根据 IP报头中的源 IP地址判断该添加了 IP 报头的第二协议数据单元是否是从第二 IP地址传输过来的数据, 即是否是通 过 IP隧道传输的数据。当基站确定添加了 IP报头的第二协议数据单元是通过 IP 隧道传输的数据时, 删除 IP报头, 根据位置信息从 IP报头中获取与第二协议 数据单元对应的第二无线承载信息,并指示第一基站协议栈中的 PDCP层中与 第二无线承载信息对应的 PDCP实体处理删除了 IP报头的第二协议数据单元。
在本发明实施例中, 还包括:
基站对添加了 IP报头的第一协议数据单元进行完整性保护。
在具体实现过程中, 由于 UE公开了第二 IP地址, 因此 UE侧容易遭到 外部攻击。 例如, 攻击者冒充基站经过 IP隧道向 UE发送大量数据, 导致无 线蜂窝网络拥塞。 因此, 基站需要对经由 WLAN AP分流的数据, 进行完整 性保护, 使得 UE侧不会遭到外部攻击。
在下行传输过程中, 基站使用完整性保护密钥对第一协议数据单元进行 完整性保护, 可选地, 该完整性保护密钥可以为对无线蜂窝网网络 RRC信令 进行完整性保护的密钥, 对经由 WLAN AP分流的第一协议数据单元进行完 整性保护。 具体地, 基站在对第一协议数据单元添加 IP报头后, 对添加了 IP 报头的第一协议数据单元, 根据该完整性保护密钥计算完整性消息鉴权码 (Message Authentication Code-Integrity, 简称 MAC-I) , 并将 MAC-I附在添 加了 IP报头的第一协议数据单元后面, 对该第一协议数据单元进行完整性保 护。 然后, 基站具有完整性保护的、 添加了 IP报头的第一协议数据单元经由 WLAN AP发送给 UE。 UE接收到经过完整性保护的、 添加了 IP报头的第一 协议数据单元后, 计算校验值来进行完整性验证。 如果计算出的校验值和接 收到的 MAC-I对应, 则完整性保护成功, UE认为该添加了 IP报头的第一协 议数据单元是基站发送的数据, 删除 IP报头后将第一协议数据单元交给第一 用户设备协议栈的聚合层处理。 基站也可以使用其它完整性保护密钥经由 WLAN AP分流的第一协议数据单元进行完整性保护, 这可能需要基站提前 将完整性保护密钥告诉 UE以让 UE能进行完整性验证。
本发明实施例通过完整性保护, 保证了数据传输的安全性, 防止用户设 备遭到外部攻击。
在本发明实施例中, 还包括:
用户设备对添加了 IP报头的第二协议数据单元进行完整性保护。
在具体实现过程中, 由于基站公开了基站的第一 IP地址, 因此基站侧容 易遭到外部攻击。 例如, 攻击者冒充 UE通过 IP隧道向基站发送大量数据, 导致无线蜂窝网络严重拥塞。 因此, UE需要对经由 WLAN AP分流的数据, 进行完整性保护。
在上行传输过程中, UE使用完整性保护密钥对第二协议数据单元进行完 整性保护, 可选地, 该完整性保护密钥可以为对无线蜂窝网的无线资源控制 (radio resource control, 简称 RRC ) 信令进行完整性保护的密钥, 对经由 WLAN AP分流的上行数据进行完整性保护。
具体地, UE在对第二协议数据单元添加 IP报头后, 对添加了 IP报头的 第二协议数据单元, 根据完整性保护密钥计算完整性消息鉴权码 (Message Authentication Code-Integrity, 简称 MAC-I) , 并将 MAC-I附在添加了 IP报头 的第二协议数据单元后面, 对该第二协议数据单元进行完整性保护。 然后, UE将具有完整性保护的、添加了 IP报头的第二协议数据单元经由 WLAN AP 发送给基站。 基站接收到经过完整性保护的、 添加了 IP报头的第二协议数据 单元后, 计算校验值来进行完整性验证。 如果计算出的校验值和接收到的 MAC-I对应, 则完整性保护成功, 基站认为该添加了 IP报头的第二协议数据 单元是 UE发送的数据, 删除 IP报头后将第二协议数据单元交给第一基站协 议栈的聚合层处理。 UE也可以使用其它完整性保护密钥对经由 WLAN AP分 流的上行数据进行完整性保护, 一种实现方式是基站提前将该其它完整性保 护密钥告诉 UE。
本发明实施例通过完整性保护, 保证了数据传输的安全性, 防止基站遭 到外部攻击。
应理解, 在本发明的各种实施例中, 上述各过程的序号的大小并不意味 着执行顺序的先后, 各过程的执行顺序应以其功能和内在逻辑确定, 而不应 对本发明实施例的实施过程构成任何限定。
上文中结合图 1至图 7, 详细描述了根据本发明实施例的分流方法, 下面 将结合图 8至图 11, 描述本发明实施例的用户设备和基站。
图 8为本发明一实施例的基站结构示意图。 本发明实施例提供的基站 80 包括发射单元 801, 接收单元 802和处理单元 803。
其中, 发射单元 801, 用于向用户设备发送请求信息, 无线局域网接入 点 WLAN AP的标识和基站的第一 IP地址, 请求信息用于请求用户设备经由 WLAN AP与基站进行多流聚合的数据传输;
接收单元 802, 用于接收用户设备发送的确认信息和 WLAN AP为用户 设备分配的第二 IP地址, 确认信息用于确认用户设备经由 WLAN AP与基站 进行多流聚合的数据传输;
处理单元 803, 用于通过 IP隧道经由 WLAN AP与用户设备进行多流聚 合的数据传输, IP隧道由第一 IP地址和第二 IP地址确定。
可选地, 基站还包括基站协议栈单元 804:
处理单元 803具体用于: 对基站协议栈单元 804的聚合层生成的第一协 议数据单元添加 IP报头; 发射单元 801还用于, 将添加了 IP报头的第一协 议数据单元通过 IP隧道, 经由 WLAN AP发送至用户设备; 或,
接收单元 802还用于: 接收用户设备通过 IP隧道经由 WLAN AP发送的 第二协议数据单元; 处理单元 803具体用于: 删除第二协议数据单元的 IP报 头, 并指示基站协议栈单元 804的聚合层处理删除了 IP报头的第二协议数据 单元, 其中, IP报头由用户设备对用户设备协议栈的聚合层生成的第二协议 数据单元添加。
可选地, 发射单元 801将添加了 IP报头的第一协议数据单元通过 IP隧 道, 经由 WLAN AP发送至用户设备前, 处理单元 803具体用于: 对基站协 议栈单元 804的聚合层生成的第一协议数据单元添加 IP报头, IP报头包括处 理单元 803根据位置信息添加的第一协议数据单元对应的无线承载信息, 无 线承载信息用于用户设备指示用户设备协议栈中与无线承载信息映射的聚合 层实体处理删除 IP了报头的第一协议数据单元; 或
接收单元 802接收用户设备通过 IP隧道经由 WLAN AP发送的第二协议 数据单元后, 处理单元 803具体用于: 根据位置信息从第二协议数据单元的 IP报头中获取与第二协议数据单元对应的无线承载信息, 删除第二协议数据 单元的 IP报头, 并指示基站协议栈单元中 804与无线承载信息映射的聚合层 实体处理删除了 IP报头的第二协议数据单元。
可选地, 位置信息用于指示无线承载信息在 IP报头中的位置, 发射单元 801还用于向用户设备发送位置信息; 或,
处理单元 803还用于与用户设备根据通信协议约定位置信息。
可选地, 无线承载信息包括无线承载标识或逻辑信道标识。
可选地, IP报头还包括逻辑信道标识对应的逻辑信道的优先级信息, 或 无线承载标识对应的无线承载的优先级信息。
可选地, 基站协议栈单元 804的聚合层用于:
分流第一协议数据单元和发射单元通过无线蜂窝网络向用户设备传输的 协议数据单元; 或,
汇聚删除了 IP报头的第二协议数据单元和用户设备通过无线蜂窝网络向 接收单元传输的协议数据单元。
可选地, 聚合层包括以下任意一种:
分组数据汇聚协议 PDCP层、媒体接入控制 MAC层、无线链路控制 RLC 层、 IP层。
可选地, 第一协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 源 IP地址为第一 IP地址, 目的 IP地址为第二 IP地址; 或,
第二协议数据单元的 IP报头还包括源 IP地址和目的 IP地址,源 IP地址 为第二 IP地址, 目的 IP地址为第一 IP地址。
可选地, 处理单元 803还用于对添加了 IP报头的第一协议数据单元进行 完整性保护。
本发明实施例提供的基站, 能够执行上述方法实施例的技术方案, 其实 现原理类似, 本实施例此处不再赘述。 本发明实施例提供的基站, 该基站作为汇聚点和分流点, 基站对无线 局域网的网络链路的质量变化敏感, 保证了业务连续性, 提高用户体验, 避免了 EPC作为汇聚点和分流点时,对无线局域网的网络链路的质量变化 不敏感导致的业务不连续。
图 9为本发明一实施例的用户设备结构示意图。 如图 9所示, 本发明实 施例提供的用户设备 90包括:接收单元 901,发射单元 902以及处理单元 903。
接收单元 901,用于接收基站发送的请求信息,无线局域网接入点 WLAN AP的标识和基站的第一 IP地址,请求信息用于请求用户设备经由 WLAN AP 与基站进行多流聚合的数据传输;
发射单元 902, 用于向基站发送确认信息和 WLAN AP为用户设备分配 的第二 IP地址, 确认信息用于确认用户设备经由 WLAN AP与基站进行多流 聚合的数据传输;
处理单元 903, 用于通过 IP隧道经由 WLAN AP与基站进行多流聚合的 数据传输, IP隧道由第一 IP地址和第二 IP地址确定。
可选地, 用户设备还包括用户设备协议栈单元 904:
接收单元 901还用于: 接收基站通过 IP隧道经由 WLAN AP发送的第一 协议数据单元; 处理单元 903具体用于: 删除第一协议数据单元的 IP报头, 并指示用户设备协议栈单元 904的聚合层处理删除了 IP报头的第一协议数据 单元, 其中, IP报头由基站对基站协议栈的聚合层生成的第一协议数据单元 添加; 或
处理单元 903具体用于: 对用户设备协议栈单元 904的聚合层生成的第 二协议数据单元添加 IP报头; 发射单元 902还用于: 将添加了 IP报头的第 二协议数据单元通过 IP隧道经由 WLAN AP发送至基站。
可选地, 接收单元 901接收基站通过 IP隧道经由 WLAN AP发送的第一 协议数据单元后, 处理单元 903具体用于:
根据位置信息从第一协议数据单元的 IP报头中获取与第一协议数据单元 对应的无线承载信息, 删除第一协议数据单元的 IP报头, 并指示用户设备协 议栈单元中与无线承载信息映射的聚合层实体处理删除了 IP报头的第一协议 数据单元; 或,
发射单元 902将添加了 IP报头的第二协议数据单元通过 IP隧道, 经由 WLAN AP发送至基站前, 处理单元 903具体用于:
对用户设备协议栈单元 904的聚合层生成的第二协议数据单元添加 IP报 头, IP报头包括用户设备根据位置信息添加的第二协议数据单元对应的无线 承载信息, 无线承载信息用于基站指示基站协议栈中与无线承载信息映射的 聚合层实体处理删除了 IP报头的第二协议数据单元。
可选地, 位置信息用于指示无线承载信息在 IP报头中的位置:
接收单元 901还用于接收基站发送的位置信息; 或,
处理单元 903还用于与基站根据通信协议约定位置信息。
可选地, 无线承载信息包括无线承载标识或逻辑信道标识。
可选地, IP报头还包括逻辑信道标识对应的逻辑信道的优先级信息, 或 无线承载标识对应的无线承载的优先级信息。
可选地, 用户设备协议栈单元 904的聚合层用于:
分流第二协议数据单元和发射单元通过无线蜂窝网络向基站传输的协议 数据单元; 或
汇聚删除了 IP报头的第一协议数据单元和基站通过无线蜂窝网络向接收 单元传输的协议数据单元。
可选地, 聚合层包括以下任意一种:
分组数据汇聚协议 PDCP层、媒体接入控制 MAC层、无线链路控制 RLC 层、 IP层。
可选地, 第一协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 源 IP地址为第一 IP地址, 目的 IP地址为第二 IP地址;
第二协议数据单元的 IP报头还包括源 IP地址和目的 IP地址,源 IP地址 为第二 IP地址, 目的 IP地址为第一 IP地址。
可选地, 处理单元 903还用于对添加了 IP报头的第二协议数据单元进行 完整性保护。
本发明实施例提供的用户设备, 能够执行上述方法实施例的技术方案, 其实现原理和类似, 本实施例此处不再赘述。
本发明实施例提供的用户设备, 在基站作为汇聚点和分流点, 实现该用 户设备与基站之间的分流, 由于基站对无线局域网的网络链路的质量变化敏 感,保证了业务连续性,提高用户体验,避免了 EPC作为汇聚点和分流点时, 对无线局域网的网络链路的质量变化不敏感导致的业务不连续。
图 10为本发明又一实施例的基站结构示意图。 如图 10所示, 本实施例 提供的基站 100包括: 网络接口 1001、 存储器 1002、 处理器 1003以及总线 1004, 网络接口 1001、 存储器 1002以及处理器 1003分别与总线 1004连接, 其中:
处理器 1003通过总线 1004,调用存储器 1002中存储的程序 1005,用于: 通过网络接口 1001向用户设备发送请求信息,无线局域网接入点 WLAN AP的标识和基站的第一 IP地址,请求信息用于请求用户设备经由 WLAN AP 与基站进行多流聚合的数据传输;
通过网络接口 1001接收用户设备发送的确认信息和 WLAN AP为用户设 备分配的第二 IP地址, 确认信息用于确认用户设备经由 WLAN AP与基站进 行多流聚合的数据传输;
处理器 1003通过 IP隧道经由 WLAN AP与用户设备进行多流聚合的数 据传输, IP隧道由第一 IP地址和第二 IP地址确定。
可选地, 当处理器 1003通过 IP隧道经由 WLAN AP与用户设备进行多 流聚合的数据传输时, 处理器 1003具体用于:
对根据基站协议栈的聚合层功能生成的第一协议数据单元添加 IP报头, 并通过网络接口将添加了 IP 报头的第一协议数据单元通过 IP 隧道, 经由 WLAN AP发送至用户设备; 或,
通过网络接口 1001接收用户设备通过 IP隧道, 经由 WLAN AP发送的 第二协议数据单元, 删除第二协议数据单元的 IP报头, 并根据基站协议栈的 聚合层功能处理删除了 IP报头的第二协议数据单元, 其中, IP报头由用户设 备对根据用户设备协议栈的聚合层功能生成的第二协议数据单元添加。
可选地, 当处理器 1003通过 IP隧道经由 WLAN AP与用户设备进行多 流聚合的数据传输时, 处理器 1003具体用于:
对根据基站协议栈的聚合层功能生成的第一协议数据单元添加 IP报头, IP报头包括处理器 1003根据位置信息添加的第一协议数据单元对应的无线 承载信息, 并通过网络接口 1001将添加了 IP报头的第一协议数据单元通过 IP隧道, 经由 WLAN AP发送至用户设备, 无线承载信息用于用户设备根据 用户设备协议栈中与无线承载信息映射的聚合层实体的聚合层功能处理删除 了 IP报头的第一协议数据单元; 或
通过网络接口 1001接收用户设备通过 IP隧道经由 WLAN AP发送的第 二协议数据单元, 根据位置信息从第二协议数据单元的 IP报头中获取与第二 协议数据单元对应的无线承载信息, 删除第二协议数据单元的 IP报头, 并根 据基站协议栈中与无线承载信息映射的聚合层实体的聚合层功能处理删除了 IP报头的第二协议数据单元。
可选地, 位置信息用于指示无线承载信息在 IP报头中的位置: 处理器 1003还用于通过网络接口向用户设备发送位置信息, 或, 与用户 设备根据通信协议约定位置信息。
可选地, 无线承载信息包括无线承载标识或逻辑信道标识。
可选地, IP报头还包括逻辑信道标识对应的逻辑信道的优先级信息, 或 无线承载标识对应的无线承载的优先级信息。
可选地, 处理器 1003根据基站协议栈的聚合层功能还用于:
分流第一协议数据单元和发射单元通过无线蜂窝网络向用户设备传输的 协议数据单元; 或,
汇聚删除了 IP报头的第二协议数据单元和用户设备通过无线蜂窝网络向 接收单元传输的协议数据单元。
可选地, 聚合层包括以下任意一种:
分组数据汇聚协议 PDCP层、媒体接入控制 MAC层、无线链路控制 RLC 层、 IP层。
可选地, 第一协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 源 IP地址为第一 IP地址, 目的 IP地址为第二 IP地址; 或,
第二协议数据单元的 IP报头还包括源 IP地址和目的 IP地址,源 IP地址 为第二 IP地址, 目的 IP地址为第一 IP地址。
可选地, 处理器 1003还用于对添加了 IP报头的第一协议数据单元进行 完整性保护。
在上述的各实施例中, 在基站侧, 添加或删除 IP报头的执行主体具体可 以为基站的处理器或基站协议栈。
本发明实施例提供的基站, 能够执行上述方法实施例的技术方案, 其实 现原理类似, 本实施例此处不再赘述。 本发明实施例提供的基站, 该基站作为汇聚点和分流点, 该基站对无线 局域网的网络链路的质量变化敏感, 保证了业务连续性, 提高用户体验, 避 免了 EPC作为汇聚点和分流点时, 对无线局域网的网络链路的质量变化不敏 感导致的业务不连续。
图 11为本发明又一实施例的用户设备结构示意图。本实施例提供的用户 设备 110, 包括: 网络接口 1101、 存储器 1102、 处理器 1103以及总线 1104, 网络接口 1101、 存储器 1102以及处理器 1103分别与总线 1104连接, 其中: 处理器 1103通过总线 1104,调用存储器 1102中存储的程序 1105,用于: 通过网络接口 1101接收基站发送的请求信息,无线局域网接入点 WLAN AP的标识和基站的第一 IP地址,请求信息用于请求用户设备经由 WLAN AP 与基站进行多流聚合的数据传输;
通过网络接口 1101向基站发送确认信息和 WLAN AP为用户设备分配的 第二 IP地址, 确认信息用于确认用户设备经由 WLAN AP与基站进行多流聚 合的数据传输;
处理器 1103通过 IP隧道经由 WLAN AP与基站进行多流聚合的数据传 输, IP隧道由第一 IP地址和第二 IP地址确定。
可选地, 当处理器 1103通过 IP隧道经由 WLAN AP与基站进行多流聚 合的数据传输时, 处理器 1103具体用于:
通过网络接口 1101接收基站通过 IP隧道, 经由 WLAN AP发送的第一 协议数据单元, 删除第一协议数据单元的 IP报头, 并根据用户设备协议栈的 聚合层功能处理删除了 IP报头的第一协议数据单元, 其中, IP报头由基站对 根据基站协议栈的聚合层功能生成的第一协议数据单元添加; 或
对根据用户设备协议栈的聚合层功能生成的第二协议数据单元添加 IP报 头, 并通过网络接口将添加了 IP报头的第二协议数据单元经由 WLAN AP通 过 IP隧道发送至基站。
可选地, 当处理器 1103通过 IP隧道经由 WLAN AP与基站进行多流聚 合的数据传输时, 处理器 1103具体用于:
通过网络接口 1101接收基站通过 IP隧道, 经由 WLAN AP发送的第一 协议数据单元, 根据位置信息从第一协议数据单元的 IP报头中获取与第一协 议数据单元对应的无线承载信息, 删除第一协议数据单元的 IP报头, 并根据 用户设备协议栈中与无线承载信息映射的聚合层实体的聚合层功能处理删除 了 IP报头的第一协议数据单元; 或,
处理器 1103 对根据用户设备协议栈的聚合层功能生成的第二协议数据 单元添加 IP报头, IP报头包括处理器根据位置信息添加的第二协议数据单元 对应的无线承载信息, 并通过网络接口 1101将添加了 IP报头的第二协议数 据单元通过 IP隧道经由 WLAN AP发送至基站, 无线承载信息用于基站根据 基站协议栈中与无线承载信息映射的聚合层实体的聚合层功能处理删除了 IP 报头的第二协议数据单元。
可选地, 位置信息用于指示无线承载信息在 IP报头中的位置:
处理器 1103还用于通过网络接口接收基站发送的位置信息, 或, 与用户 设备根据通信协议约定位置信息。
可选地, 无线承载信息包括无线承载标识或逻辑信道标识。
可选地, IP报头还包括逻辑信道标识对应的逻辑信道的优先级信息, 或 无线承载标识对应的无线承载的优先级信息。
可选地, 处理器 1103根据用户设备协议栈聚合层功能还用于: 分流第二协议数据单元和发射单元通过无线蜂窝网络向基站传输的协议 数据单元; 或
汇聚删除了 IP报头的第一协议数据单元和基站通过无线蜂窝网络向接收 单元传输的协议数据单元。
可选地, 聚合层包括以下任意一种:
分组数据汇聚协议 PDCP层、媒体接入控制 MAC层、无线链路控制 RLC 层、 IP层。
可选地, 第一协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 源 IP地址为第一 IP地址, 目的 IP地址为第二 IP地址;
第二协议数据单元的 IP报头还包括源 IP地址和目的 IP地址,源 IP地址 为第二 IP地址, 目的 IP地址为第一 IP地址。
可选地, 处理器 1103还用于对添加了 IP报头的第二协议数据单元进行完 整性保护。
在用户设备侧, 添加或删除 IP报头的执行主体具体可以为用户设备的处 理器或用户设备协议栈。 本发明实施例提供的用户设备, 能够执行上述方法实施例的技术方案, 其实现原理类似, 本实施例此处不再赘述。
本发明实施例提供的用户设备, 在基站作为汇聚点和分流点时, 实现该 用户设备与基站之间的分流, 由于基站对无线局域网的网络链路的质量变化 敏感, 保证了业务连续性, 提高用户体验, 避免了 EPC作为汇聚点和分流点 时, 对无线局域网的网络链路的质量变化不敏感导致的业务不连续。
应理解, 本文中术语"和 /或", 仅仅是一种描述关联对象的关联关系, 表 示可以存在三种关系, 例如, A和 /或 B , 可以表示: 单独存在 A, 同时存在 A 和 B, 单独存在 B这三种情况。 另外, 本文中字符" /", 一般表示前后关联对象 是一种 "或"的关系。
应理解, 在本发明的各种实施例中, 上述各过程的序号的大小并不意味 着执行顺序的先后, 各过程的执行顺序应以其功能和内在逻辑确定, 而不应 对本发明实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到, 结合本文中所公开的实施例描述的各 示例的单元及算法歩骤, 能够以电子硬件、 或者计算机软件和电子硬件的结 合来实现。 这些功能究竟以硬件还是软件方式来执行, 取决于技术方案的特 定应用和设计约束条件。 专业技术人员可以对每个特定的应用来使用不同方 法来实现所描述的功能, 但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 上述描 述的系统、 装置和单元的具体工作过程, 可以参考前述方法实施例中的对应 过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统、 装置和 方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示 意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可 以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成到另一个 系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之间 的耦合或直接耦合或通信连接可以是通过一些接口, 装置或单元的间接耦合 或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作 为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的部分或 者全部单元来实现本实施例方案的目的。
另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在一个单 元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用 时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明的 技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可 以以软件产品的形式体现出来, 该计算机软件产品存储在一个存储介质中, 包括若干指令用以使得一台计算机设备 (可以是个人计算机, 服务器, 或者 网络设备等) 执行本发明各个实施例所述方法的全部或部分歩骤。 而前述的 存储介质包括: U盘、移动硬盘、只读存储器(Read-Only Memory,简称 ROM)、 随机存取存储器 (Random Access Memory, 简称 RAM)、 磁碟或者光盘等各 种可以存储程序代码的介质。
最后应说明的是: 以上各实施例仅用以说明本发明的技术方案, 而非对 其限制; 尽管参照前述各实施例对本发明进行了详细的说明, 本领域的普通 技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其中部分或者全部技术特征进行等同替换; 而这些修改或者替换, 并 不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims

权利 要求 书
1、 一种数据传输的方法, 其特征在于, 包括:
基站向用户设备发送请求信息, 无线局域网接入点 WLAN AP的标识, 和所述基站的第一 IP 地址, 所述请求信息用于请求所述用户设备经由所述 WLAN AP与所述基站进行多流聚合的数据传输;
所述基站接收所述用户设备发送的确认信息和所述 WLAN AP为所述用 户设备分配的第二 IP 地址, 所述确认信息用于确认所述用户设备经由所述 WLAN AP与所述基站进行多流聚合的数据传输;
所述基站通过所述 IP隧道经由所述 WLAN AP与所述用户设备进行多流 聚合的数据传输, 所述 IP隧道由所述第一 IP地址和所述第二 IP地址确定。
2、根据权利要求 1所述的方法,其特征在于,所述基站具有基站协议栈, 所述基站通过所述 IP隧道经由所述 WLAN AP与所述用户设备进行多流聚合 的数据传输, 包括:
所述基站对所述基站协议栈的聚合层生成的第一协议数据单元添加 IP报 头, 并将添加了所述 IP报头的第一协议数据单元通过所述 IP隧道, 经由所 述 WLAN AP发送至所述用户设备; 或,
所述基站接收所述用户设备通过所述 IP隧道经由所述 WLAN AP发送的 第二协议数据单元, 删除所述第二协议数据单元的 IP报头, 并指示所述基站 协议栈的聚合层处理所述删除了 IP报头的第二协议数据单元, 其中, 所述 IP 报头由所述用户设备对用户设备协议栈的聚合层生成的所述第二协议数据单 元添加。
3、 根据权利要求 2所述的方法, 其特征在于:
所述基站对所述基站协议栈的聚合层生成的第一协议数据单元添加 IP报 头, 并将添加了所述 IP报头的第一协议数据单元通过所述 IP隧道, 经由所 述 WLAN AP发送至所述用户设备, 包括:
所述基站对所述基站协议栈的聚合层生成的第一协议数据单元添加 IP报 头, 所述 IP报头包括所述基站根据位置信息添加的所述第一协议数据单元对 应的无线承载信息,并将所述添加了 IP报头的第一协议数据单元通过所述 IP 隧道, 经由所述 WLAN AP发送至所述用户设备, 所述无线承载信息用于所 述用户设备指示所述用户设备协议栈中与所述无线承载信息映射的聚合层实 体处理删除了 IP报头的所述第一协议数据单元; 或
所述基站接收所述用户设备通过所述 IP隧道经由所述 WLAN AP发送的 第二协议数据单元, 删除所述第二协议数据单元的 IP报头, 并指示所述基站 协议栈的聚合层处理所述删除了 IP报头的第二协议数据单元, 包括:
所述基站接收所述用户设备通过所述 IP隧道经由所述 WLAN AP发送的 第二协议数据单元, 根据位置信息从所述第二协议数据单元的 IP报头中获取 与所述第二协议数据单元对应的无线承载信息, 删除所述第二协议数据单元 的 IP报头, 并指示所述基站协议栈中与所述无线承载信息映射的聚合层实体 处理所述删除了 IP报头的第二协议数据单元。
4、 根据权利要求 3所述的方法, 其特征在于:
所述位置信息由所述基站向所述用户设备发送, 或, 由所述基站与所述 用户设备根据通信协议约定;
所述位置信息用于指示所述无线承载信息在所述 IP报头中的位置。
5、 根据权利要求 3或 4所述的方法, 其特征在于:
所述无线承载信息包括无线承载标识或逻辑信道标识。
6、 根据权利要求 5所述的方法, 其特征在于:
所述 IP报头还包括所述逻辑信道标识对应的逻辑信道的优先级信息, 或 所述无线承载标识对应的无线承载的优先级信息。
7、 根据权利要求 3至 6任一项所述的方法, 其特征在于, 所述基站协议 栈的聚合层用于:
分流所述第一协议数据单元和所述基站通过无线蜂窝网络向所述用户设 备传输的协议数据单元; 或,
汇聚所述删除了 IP报头的第二协议数据单元和所述用户设备通过无线蜂 窝网络向所述基站传输的协议数据单元。
8、 根据权利要求 3至 7任一项所述的方法, 其特征在于:
所述聚合层包括以下任意一种:
分组数据汇聚协议 PDCP层、媒体接入控制 MAC层、无线链路控制 RLC 层、 IP层。
9、 根据权利要求 3至 8任一项所述的方法, 其特征在于:
所述第一协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第一 IP地址, 所述目的 IP地址为所述第二 IP地址; 或, 所述第二协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第二 IP地址, 所述目的 IP地址为所述第一 IP地址。
10、 根据权利要求 2至 9任一项所述的方法, 其特征在于, 还包括: 所述基站对所述添加了 IP报头的第一协议数据单元进行完整性保护。
11、 一种数据传输的方法, 其特征在于, 包括:
用户设备接收基站发送的请求信息, 无线局域网接入点 WLAN AP的标 识和所述基站的第一 IP地址, 所述请求信息用于请求所述用户设备经由所述
WLAN AP与所述基站进行多流聚合的数据传输;
所述用户设备向所述基站发送确认信息和所述 WLAN AP为所述用户设 备分配的第二 IP地址,所述确认信息用于确认所述用户设备经由所述 WLAN
AP与所述基站进行多流聚合的数据传输;
所述用户设备通过 IP隧道经由所述 WLAN AP与所述基站进行多流聚合 的数据传输, 所述 IP隧道由所述第一 IP地址和所述第二 IP地址确定。
12、 根据权利要求 11所述的方法, 其特征在于, 所述用户设备具有用户 设备协议栈, 所述用户设备通过 IP隧道经由所述 WLAN AP与所述基站进行 多流聚合的数据传输, 包括:
所述用户设备接收所述基站通过所述 IP隧道经由所述 WLAN AP发送的 第一协议数据单元, 删除所述第一协议数据单元的 IP报头, 并指示所述用户 设备协议栈的聚合层处理所述删除了 IP报头的第一协议数据单元, 其中, 所 述 IP报头由所述基站对基站协议栈的聚合层生成的所述第一协议数据单元添 力口; 或
所述用户设备对所述用户设备协议栈的聚合层生成的第二协议数据单元 添加 IP报头,并将添加了所述 IP报头的第二协议数据单元通过所述 IP隧道, 经由所述 WLAN AP发送至所述基站。
13、 根据权利要求 12所述的方法, 其特征在于:
所述用户设备接收所述基站通过所述 IP隧道经由所述 WLAN AP发送的 第一协议数据单元, 删除所述第一协议数据单元的 IP报头, 并指示所述用户 设备协议栈的聚合层处理所述删除了 IP报头的第一协议数据单元, 包括: 所述用户设备接收所述基站通过所述 IP隧道经由所述 WLAN AP发送的 第一协议数据单元, 根据位置信息从所述第一协议数据单元的 IP报头中获取 与所述第一协议数据单元对应的无线承载信息, 删除所述第一协议数据单元 的 IP报头, 并指示所述用户设备协议栈中与所述无线承载信息映射的聚合层 实体处理所述删除了 IP报头的第一协议数据单元; 或,
所述用户设备对所述用户设备协议栈的聚合层生成的第二协议数据单元 添加 IP报头,并将添加了所述 IP报头的第二协议数据单元通过所述 IP隧道, 经由所述 WLAN AP发送至所述基站, 包括:
所述用户设备对所述用户设备协议栈的聚合层生成的第二协议数据单元 添加 IP报头, 所述 IP报头包括所述用户设备根据位置信息添加的所述第二 协议数据单元对应的无线承载信息, 并将所述添加了 IP报头的第二协议数据 单元通过所述 IP隧道经由所述 WLAN AP发送至所述基站, 所述无线承载信 息用于所述基站指示所述基站协议栈中与所述无线承载信息映射的聚合层实 体处理删除了 IP报头的所述第二协议数据单元。
14、 根据权利要求 13所述的方法, 其特征在于:
所述位置信息由所述基站向所述用户设备发送, 或, 由所述基站与所述 用户设备根据通信协议约定;
所述位置信息用于指示所述无线承载信息在所述 IP报头中的位置。
15、 根据权利要求 13或 14所述的方法, 其特征在于:
所述无线承载信息包括无线承载标识或逻辑信道标识。
16、 根据权利要求 15所述的方法, 其特征在于:
所述 IP报头还包括所述逻辑信道标识对应的逻辑信道的优先级信息, 或 所述无线承载标识对应的无线承载的优先级信息。
17、 根据权利要求 13至 16任一项所述的方法, 其特征在于, 所述用户 设备协议栈的聚合层用于:
分流所述第二协议数据单元和所述用户设备通过无线蜂窝网络向所述基 站传输的协议数据单元; 或
汇聚所述删除了 IP报头的第一协议数据单元和所述基站通过无线蜂窝网 络向所述用户设备传输的协议数据单元。
18、 根据权利要求 13至 17任一项所述的方法, 其特征在于:
所述聚合层包括以下任意一种: 分组数据汇聚协议 PDCP层、媒体接入控制 MAC层、无线链路控制 RLC 层、 IP层。
19、 根据权利要求 13至 18任一项所述的方法, 其特征在于:
所述第一协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第一 IP地址, 所述目的 IP地址为所述第二 IP地址;
所述第二协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第二 IP地址, 所述目的 IP地址为所述第一 IP地址。
20、 根据权利要求 12至 19任一项所述的方法, 其特征在于, 还包括: 所述用户设备对所述添加了 IP报头的第二协议数据单元进行完整性保 护。
21、 一种基站, 其特征在于, 包括:
发射单元,用于向用户设备发送请求信息,无线局域网接入点 WLAN AP 的标识和所述基站的第一 IP地址, 所述请求信息用于请求所述用户设备经由 所述 WLAN AP与所述基站进行多流聚合的数据传输;
接收单元, 用于接收所述用户设备发送的确认信息和所述 WLAN AP为 所述用户设备分配的第二 IP地址, 所述确认信息用于确认所述用户设备经由 所述 WLAN AP与所述基站进行多流聚合的数据传输;
处理单元, 用于通过所述 IP隧道经由所述 WLAN AP与所述用户设备进 行多流聚合的数据传输, 所述 IP隧道由所述第一 IP地址和所述第二 IP地址 确定。
22、 根据权利要求 21所述的基站, 其特征在于, 所述基站还包括基站协 议栈单元:
所述处理单元具体用于: 对所述基站协议栈单元的聚合层生成的第一协 议数据单元添加 IP报头; 所述发射单元还用于, 将添加了所述 IP报头的第 一协议数据单元通过所述 IP隧道,经由所述 WLAN AP发送至所述用户设备; 或,
所述接收单元还用于: 接收所述用户设备通过所述 IP 隧道经由所述 WLAN AP发送的第二协议数据单元; 所述处理单元具体用于: 删除所述第 二协议数据单元的 IP报头, 并指示所述基站协议栈单元的聚合层处理所述删 除了 IP报头的第二协议数据单元, 其中, 所述 IP报头由所述用户设备对用 户设备协议栈的聚合层生成的所述第二协议数据单元添加。
23、 根据权利要求 22所述的基站, 其特征在于:
所述发射单元将添加了所述 IP报头的第一协议数据单元通过所述 IP隧 道, 经由所述 WLAN AP发送至所述用户设备前, 所述处理单元具体用于: 对所述基站协议栈单元的聚合层生成的第一协议数据单元添加 IP报头, 所述 IP报头包括所述处理单元根据位置信息添加的所述第一协议数据单元对应的 无线承载信息, 所述无线承载信息用于所述用户设备指示所述用户设备协议 栈中与所述无线承载信息映射的聚合层实体处理删除 IP了报头的所述第一协 议数据单元; 或
所述接收单元接收所述用户设备通过所述 IP隧道经由所述 WLAN AP发 送的第二协议数据单元后, 所述处理单元具体用于: 根据位置信息从所述第 二协议数据单元的 IP报头中获取与所述第二协议数据单元对应的无线承载信 息, 删除所述第二协议数据单元的 IP报头, 并指示所述基站协议栈单元中与 所述无线承载信息映射的聚合层实体处理所述删除了 IP报头的第二协议数据 单元。
24、 根据权利要求 23所述的基站, 其特征在于, 所述位置信息用于指示 所述无线承载信息在所述 IP报头中的位置,
所述发射单元还用于向所述用户设备发送所述位置信息; 或,
所述处理单元还用于与所述用户设备根据通信协议约定所述位置信息。
25、 根据权利要求 23或 24所述的基站, 其特征在于:
所述无线承载信息包括无线承载标识或逻辑信道标识。
26、 根据权利要求 25所述的基站, 其特征在于:
所述 IP报头还包括所述逻辑信道标识对应的逻辑信道的优先级信息, 或 所述无线承载标识对应的无线承载的优先级信息。
27、 根据权利要求 23至 26任一项所述的基站, 其特征在于, 所述基站 协议栈单元的聚合层用于:
分流所述第一协议数据单元和所述发射单元通过无线蜂窝网络向所述用 户设备传输的协议数据单元; 或,
汇聚所述删除了 IP报头的第二协议数据单元和所述用户设备通过无线蜂 窝网络向所述接收单元传输的协议数据单元。
28、 根据权利要求 23至 27任一项所述的基站, 其特征在于: 所述聚合层包括以下任意一种:
分组数据汇聚协议 PDCP层、媒体接入控制 MAC层、无线链路控制 RLC 层、 IP层。
29、 根据权利要求 23至 28任一项所述的基站, 其特征在于:
所述第一协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第一 IP地址, 所述目的 IP地址为所述第二 IP地址; 或, 所述第二协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第二 IP地址, 所述目的 IP地址为所述第一 IP地址。
30、 根据权利要求 22至 29任一项所述的基站, 其特征在于, 所述处理 单元还用于对所述添加了 IP报头的第一协议数据单元进行完整性保护。
31、 一种用户设备, 其特征在于, 包括:
接收单元,用于接收基站发送的请求信息,无线局域网接入点 WLAN AP 的标识和所述基站的第一 IP地址, 所述请求信息用于请求所述用户设备经由 所述 WLAN AP与所述基站进行多流聚合的数据传输;
发射单元, 用于向所述基站发送确认信息和所述 WLAN AP为所述用户 设备分配的第二 IP 地址, 所述确认信息用于确认所述用户设备经由所述 WLAN AP与所述基站进行多流聚合的数据传输;
处理单元, 用于通过 IP隧道经由所述 WLAN AP与所述基站进行多流聚 合的数据传输, 所述 IP隧道由所述第一 IP地址和所述第二 IP地址确定。
32、 根据权利要求 31所述的用户设备, 其特征在于, 所述用户设备还包 括用户设备协议栈单元:
所述接收单元还用于: 接收所述基站通过所述 IP隧道经由所述 WLAN AP发送的第一协议数据单元; 所述处理单元具体用于: 删除所述第一协议数 据单元的 IP报头, 并指示所述用户设备协议栈单元的聚合层处理所述删除了 IP报头的第一协议数据单元, 其中, 所述 IP报头由所述基站对基站协议栈的 聚合层生成的所述第一协议数据单元添加; 或
所述处理单元具体用于: 对所述用户设备协议栈单元的聚合层生成的第 二协议数据单元添加 IP报头; 所述发射单元还用于: 将添加了所述 IP报头 的第二协议数据单元通过所述 IP隧道经由所述 WLAN AP发送至所述基站。
33、 根据权利要求 32所述的用户设备, 其特征在于:
所述接收单元接收所述基站通过所述 IP隧道经由所述 WLAN AP发送的 第一协议数据单元后, 所述处理单元具体用于:
根据位置信息从所述第一协议数据单元的 IP报头中获取与所述第一协议 数据单元对应的无线承载信息, 删除所述第一协议数据单元的 IP报头, 并指 示所述用户设备协议栈单元中与所述无线承载信息映射的聚合层实体处理所 述删除了 IP报头的第一协议数据单元; 或,
所述发射单元将添加了所述 IP报头的第二协议数据单元通过所述 IP隧 道, 经由所述 WLAN AP发送至所述基站前, 所述处理单元具体用于:
对所述用户设备协议栈单元的聚合层生成的第二协议数据单元添加 IP报 头, 所述 IP报头包括所述用户设备根据位置信息添加的所述第二协议数据单 元对应的无线承载信息, 所述无线承载信息用于所述基站指示所述基站协议 栈中与所述无线承载信息映射的聚合层实体处理删除了 IP报头的所述第二协 议数据单元。
34、 根据权利要求 33所述的用户设备, 其特征在于, 所述位置信息用于 指示所述无线承载信息在所述 IP报头中的位置:
所述接收单元还用于接收所述基站发送的所述位置信息; 或,
所述处理单元还用于与所述基站根据通信协议约定所述位置信息。
35、 根据权利要求 33或 34所述的用户设备, 其特征在于:
所述无线承载信息包括无线承载标识或逻辑信道标识。
36、 根据权利要求 35所述的用户设备, 其特征在于:
所述 IP报头还包括所述逻辑信道标识对应的逻辑信道的优先级信息, 或 所述无线承载标识对应的无线承载的优先级信息。
37、 根据权利要求 33至 36任一项所述的用户设备, 其特征在于, 所述 用户设备协议栈单元的聚合层用于:
分流所述第二协议数据单元和所述发射单元通过无线蜂窝网络向所述基 站传输的协议数据单元; 或
汇聚所述删除了 IP报头的第一协议数据单元和所述基站通过无线蜂窝网 络向所述接收单元传输的协议数据单元。
38、 根据权利要求 33至 37任一项所述的用户设备, 其特征在于: 所述聚合层包括以下任意一种:
分组数据汇聚协议 PDCP层、媒体接入控制 MAC层、无线链路控制 RLC 层、 IP层。
39、 根据权利要求 33至 38任一项所述的用户设备, 其特征在于: 所述第一协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第一 IP地址, 所述目的 IP地址为所述第二 IP地址;
所述第二协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第二 IP地址, 所述目的 IP地址为所述第一 IP地址。
40、 根据权利要求 32至 39任一项所述的用户设备, 其特征在于, 所述 处理单元还用于对所述添加了 IP报头的第二协议数据单元进行完整性保护。
41、 一种基站, 其特征在于, 包括: 网络接口、 存储器、 处理器以及总 线, 所述网络接口、 所述存储器以及所述处理器分别与所述总线连接, 其中: 所述处理器通过所述总线, 调用所述存储器中存储的程序, 用于: 通过所述网络接口向所述用户设备发送请求信息, 无线局域网接入点 WLAN AP的标识和所述基站的第一 IP地址, 所述请求信息用于请求所述用 户设备经由所述 WLAN AP与所述基站进行多流聚合的数据传输;
通过所述网络接口接收所述用户设备发送的确认信息和所述 WLAN AP 为所述用户设备分配的第二 IP地址, 所述确认信息用于确认所述用户设备经 由所述 WLAN AP与所述基站进行多流聚合的数据传输;
所述处理器通过所述 IP隧道经由所述 WLAN AP与所述用户设备进行多 流聚合的数据传输,所述 IP隧道由所述第一 IP地址和所述第二 IP地址确定。
42、 根据权利要求 41所述的基站, 其特征在于, 当所述处理器通过所述 IP隧道经由所述 WLAN AP与所述用户设备进行多流聚合的数据传输时, 所 述处理器具体用于:
对根据基站协议栈的聚合层功能生成的第一协议数据单元添加 IP报头, 并通过所述网络接口将添加了所述 IP报头的第一协议数据单元通过所述 IP 隧道, 经由所述 WLAN AP发送至所述用户设备; 或,
通过所述网络接口接收所述用户设备通过所述 IP隧道,经由所述 WLAN AP发送的第二协议数据单元, 删除所述第二协议数据单元的 IP报头, 并根 据基站协议栈的聚合层功能处理所述删除了 IP报头的第二协议数据单元, 其 中, 所述 IP报头由所述用户设备对根据用户设备协议栈的聚合层功能生成的 所述第二协议数据单元添加。
43、 根据权利要求 41所述的基站, 其特征在于, 当所述处理器通过所述 IP隧道经由所述 WLAN AP与所述用户设备进行多流聚合的数据传输时, 所 述处理器具体用于:
对根据基站协议栈的聚合层功能生成的第一协议数据单元添加 IP报头, 所述 IP报头包括所述处理器根据位置信息添加的所述第一协议数据单元对应 的无线承载信息, 并通过所述网络接口将所述添加了 IP报头的第一协议数据 单元通过所述 IP隧道, 经由所述 WLAN AP发送至所述用户设备, 所述无线 承载信息用于所述用户设备根据所述用户设备协议栈中与所述无线承载信息 映射的聚合层实体的聚合层功能处理删除了 IP报头的所述第一协议数据单 元; 或
通过所述网络接口接收所述用户设备通过所述 IP隧道经由所述 WLAN AP 发送的第二协议数据单元, 根据位置信息从所述第二协议数据单元的 IP 报头中获取与所述第二协议数据单元对应的无线承载信息, 删除所述第二协 议数据单元的 IP报头, 并根据基站协议栈中与所述无线承载信息映射的聚合 层实体的聚合层功能处理所述删除了 IP报头的第二协议数据单元。
44、 根据权利要求 43所述的基站, 其特征在于, 所述位置信息用于指示 所述无线承载信息在所述 IP报头中的位置:
所述处理器还用于通过所述网络接口向所述用户设备发送所述位置信 息, 或, 与所述用户设备根据通信协议约定所述位置信息。
45、 根据权利要求 43或 44所述的基站, 其特征在于:
所述无线承载信息包括无线承载标识或逻辑信道标识。
46、 根据权利要求 45所述的基站, 其特征在于:
所述 IP报头还包括所述逻辑信道标识对应的逻辑信道的优先级信息, 或 所述无线承载标识对应的无线承载的优先级信息。
47、 根据权利要求 43至 46任一项所述的基站, 其特征在于, 所述处理 器根据基站协议栈的聚合层功能还用于:
分流所述第一协议数据单元和所述发射单元通过无线蜂窝网络向所述用 户设备传输的协议数据单元; 或, 汇聚所述删除了 IP报头的第二协议数据单元和所述用户设备通过无线蜂 窝网络向所述接收单元传输的协议数据单元。
48、 根据权利要求 43至 47任一项所述的基站, 其特征在于:
所述聚合层包括以下任意一种:
分组数据汇聚协议 PDCP层、媒体接入控制 MAC层、无线链路控制 RLC 层、 IP层。
49、 根据权利要求 43至 48任一项所述的基站, 其特征在于:
所述第一协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第一 IP地址, 所述目的 IP地址为所述第二 IP地址; 或, 所述第二协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第二 IP地址, 所述目的 IP地址为所述第一 IP地址。
50、 根据权利要求 42至 49任一项所述的基站, 其特征在于, 所述处理 器还用于对所述添加了 IP报头的第一协议数据单元进行完整性保护。
51、 一种用户设备, 其特征在于, 包括: 网络接口、 存储器、 处理器以 及总线, 所述网络接口、 所述存储器以及所述处理器分别与所述总线连接, 其中:
所述处理器通过所述总线, 调用所述存储器中存储的程序, 用于: 通过所述网络接口接收所述基站发送的请求信息, 无线局域网接入点 WLAN AP的标识和所述基站的第一 IP地址, 所述请求信息用于请求所述用 户设备经由所述 WLAN AP与所述基站进行多流聚合的数据传输;
通过所述网络接口向所述基站发送确认信息和所述 WLAN AP为所述用 户设备分配的第二 IP 地址, 所述确认信息用于确认所述用户设备经由所述 WLAN AP与所述基站进行多流聚合的数据传输;
所述处理器通过 IP隧道经由所述 WLAN AP与所述基站进行多流聚合的 数据传输, 所述 IP隧道由所述第一 IP地址和所述第二 IP地址确定。
52、 根据权利要求 51所述的用户设备, 其特征在于, 当所述处理器通过 IP隧道经由所述 WLAN AP与所述基站进行多流聚合的数据传输时, 所述处 理器具体用于:
通过所述网络接口接收所述基站通过所述 IP隧道, 经由所述 WLAN AP 发送的第一协议数据单元, 删除所述第一协议数据单元的 IP报头, 并根据用 户设备协议栈的聚合层功能处理所述删除了 IP报头的第一协议数据单元, 其 中, 所述 IP报头由所述基站对根据基站协议栈的聚合层功能生成的所述第一 协议数据单元添加; 或
对根据用户设备协议栈的聚合层功能生成的第二协议数据单元添加 IP报 头, 并通过所述网络接口将添加了所述 IP报头的第二协议数据单元经由所述 WLAN AP通过所述 IP隧道发送至所述基站。
53、 根据权利要求 51所述的用户设备, 其特征在于, 当所述处理器通过 IP隧道经由所述 WLAN AP与所述基站进行多流聚合的数据传输时, 所述处 理器具体用于:
通过所述网络接口接收所述基站通过所述 IP隧道, 经由所述 WLAN AP 发送的第一协议数据单元, 根据位置信息从所述第一协议数据单元的 IP报头 中获取与所述第一协议数据单元对应的无线承载信息, 删除所述第一协议数 据单元的 IP报头, 并根据用户设备协议栈中与所述无线承载信息映射的聚合 层实体的聚合层功能处理所述删除了 IP报头的第一协议数据单元; 或,
所述处理器对根据用户设备协议栈的聚合层功能生成的第二协议数据单 元添加 IP报头, 所述 IP报头包括所述处理器根据位置信息添加的所述第二 协议数据单元对应的无线承载信息, 并通过所述网络接口将所述添加了 IP报 头的第二协议数据单元通过所述 IP隧道经由所述 WLAN AP发送至所述基 站, 所述无线承载信息用于所述基站根据所述基站协议栈中与所述无线承载 信息映射的聚合层实体的聚合层功能处理删除了 IP报头的所述第二协议数据 单元。
54、 根据权利要求 53所述的用户设备, 其特征在于, 所述位置信息用于 指示所述无线承载信息在所述 IP报头中的位置:
所述处理器还用于通过所述网络接口接收所述基站发送的所述位置信 息, 或, 与所述用户设备根据通信协议约定所述位置信息。
55、 根据权利要求 53或 54所述的用户设备, 其特征在于:
所述无线承载信息包括无线承载标识或逻辑信道标识。
56、 根据权利要求 55所述的用户设备, 其特征在于:
所述 IP报头还包括所述逻辑信道标识对应的逻辑信道的优先级信息, 或 所述无线承载标识对应的无线承载的优先级信息。
57、 根据权利要求 53至 56任一项所述的用户设备, 其特征在于, 所述 处理器根据用户设备协议栈聚合层功能还用于:
分流所述第二协议数据单元和所述发射单元通过无线蜂窝网络向所述基 站传输的协议数据单元; 或
汇聚所述删除了 IP报头的第一协议数据单元和所述基站通过无线蜂窝网 络向所述接收单元传输的协议数据单元。
58、 根据权利要求 53至 57任一项所述的用户设备, 其特征在于: 所述聚合层包括以下任意一种:
分组数据汇聚协议 PDCP层、媒体接入控制 MAC层、无线链路控制 RLC 层、 IP层。
59、 根据权利要求 53至 58任一项所述的用户设备, 其特征在于: 所述第一协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第一 IP地址, 所述目的 IP地址为所述第二 IP地址;
所述第二协议数据单元的 IP报头还包括源 IP地址和目的 IP地址, 所述 源 IP地址为所述第二 IP地址, 所述目的 IP地址为所述第一 IP地址。
60、 根据权利要求 52至 59任一项所述的用户设备, 其特征在于, 所述 处理器还用于对所述添加了 IP报头的第二协议数据单元进行完整性保护。
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US20170048914A1 (en) 2017-02-16
US10098173B2 (en) 2018-10-09

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