WO2017166129A1 - 承载切换方法及基站设备、网络节点 - Google Patents

承载切换方法及基站设备、网络节点 Download PDF

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Publication number
WO2017166129A1
WO2017166129A1 PCT/CN2016/077884 CN2016077884W WO2017166129A1 WO 2017166129 A1 WO2017166129 A1 WO 2017166129A1 CN 2016077884 W CN2016077884 W CN 2016077884W WO 2017166129 A1 WO2017166129 A1 WO 2017166129A1
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WO
WIPO (PCT)
Prior art keywords
bearer
information
base station
identifier
direct link
Prior art date
Application number
PCT/CN2016/077884
Other languages
English (en)
French (fr)
Inventor
李明超
王燕
曹振臻
韩广林
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 CN201680071678.6A priority Critical patent/CN108370592B/zh
Priority to EP16895910.4A priority patent/EP3425958B1/en
Priority to PCT/CN2016/077884 priority patent/WO2017166129A1/zh
Publication of WO2017166129A1 publication Critical patent/WO2017166129A1/zh
Priority to US16/146,206 priority patent/US20190037461A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/03—Reselecting a link using a direct mode connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/03—Reselecting a link using a direct mode connection
    • H04W36/037—Reselecting a link using a direct mode connection by reducing handover delay, e.g. latency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/23—Manipulation of direct-mode connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a bearer switching method, a base station device, and a network node.
  • vehicles can communicate between vehicles and vehicles (Vehicle to Vehicle, V2V for short) or vehicle to roadside infrastructure (Voice to Infrastructure, V2I for short) or communication between vehicles and pedestrians ( English: Vehicle to Pedestrian (V2P) or Vehicle to Network (V2N) to obtain road information or receive information services in a timely manner.
  • V2X communication Vehicle to Pedestrian (V2P) or Vehicle to Network (V2N)
  • V2X Vehicle to Network
  • the vehicle can communicate with its surrounding vehicle speed by means of V2V communication, such as its own speed, direction of travel, specific position, or whether it has stepped on the emergency brake.
  • the roadside infrastructure can also provide various types of service information and data network access for vehicles, and functions such as non-stop charging and in-vehicle entertainment greatly improve traffic intelligence.
  • Chemical We call the network used by V2X communication a car network.
  • LTE is the current mainstream wireless communication technology.
  • the device to Device Direct Device (D2D) technology is used as an important feature and standardization work, which supports direct communication between user terminals.
  • D2D Device Direct Device
  • FIG. 2 a communication diagram for transmitting V2X messages using terminal direct communication
  • the V2X service can be transmitted through D2D technology.
  • the communication diagram using the base station to transmit the V2X message the vehicle can transmit the information to the base station and then pass by the base station. Give other vehicles to implement vehicle network communication.
  • the interface in which the vehicle communicates with the surrounding terminals through direct connection may become a PC5 interface, and the interface between the vehicle and the base station may be referred to as a Uu interface. Therefore, the network needs to configure the UE to dynamically switch between using the base station transit mode and the direct connection communication mode according to network conditions or UE service requirements.
  • the user equipment (English: User Equipment, UE for short) is transmitted through the base station.
  • the network will be based on the service quality of the UE (Quality of Service, QoS for short), and the UE is in the UE and the Public Data Network Gateway (P-GW).
  • Different Evolved Packet System (EPS) bearers are set up to transmit different services using these different EPS bearers.
  • the bearer of each EPS carried between the UE and the serving gateway (English: Serving GateWay, S-GW for short) is called the evolved UMTS terrestrial radio access network radio access bearer.
  • E-RAB E-UTRAN Radio Access Bearer
  • the E-RAB bearer consists of an S1 bearer (English: S1Bearer) and a radio bearer (English: Radio Bearer).
  • V2V services users may use V2V services and other services at the same time.
  • E-RAB1 to transmit V2V services
  • E-RAB2 is used to transmit online navigation services.
  • the V2V service of the user needs to be converted from the base station transit mode to the direct link transmission mode
  • the E-RAB1 needs to be switched to the direct link radio bearer (English: sidelink radio bearer, SLRB for short), and other services do not need to be used. Switch.
  • SLRB sidelink radio bearer
  • Switch At this time, only the V2V service needs to be switched from E-RAB1 to SLRB, and the online navigation service is still maintained in the E-RAB2 transmission. From this scenario, for E-RAB, some E-RABs support switching to direct link (or PC5) transmission, while some E-RABs do not allow switching to direct link transmission.
  • the base station (English: eNodeB, eNB for short) cannot identify whether the E-RAB supports handover to the direct link radio bearer transmission, and thus cannot switch the E-RAB supporting the handover to the direct link wireless. Bearer transmission.
  • the embodiments of the present invention provide a bearer switching method, a base station device, and a network node, to accurately and timely identify a bearer that is switched to a direct link.
  • the first aspect provides a bearer switching method, including: receiving, by a first base station, first information sent by a network node, where the first information includes a first bearer identifier and dedicated information, where the dedicated information is used to indicate the The first bearer corresponding to the bearer identifier supports switching to the direct link radio bearer.
  • the base station receives the information sent by the network node, where the information includes the bearer identifier and the dedicated information, where the dedicated information indicates that the bearer corresponding to the bearer identifier supports switching to the direct link radio bearer, so that the base station can Timely and accurate implementation of E-UTRAN that will support handover The radio access bearer switches to the direct link radio bearer transmission.
  • the method further includes: the first base station, according to the first bearer identifier and the dedicated information, instructing the user equipment to switch the first bearer to a direct link Wireless bearer.
  • the base station can promptly and accurately indicate that the user equipment switches the E-UTRAN radio access bearer supporting the handover to the direct link radio bearer transmission according to the received bearer identifier and the dedicated information.
  • the dedicated information includes one or more of the following information: indication information, a dedicated quality of service scale value QCI identification, a dedicated allocation and retention priority ARP identification, or The service identifier, where the service identifier is an identifier that supports a service that is switched to a directly connected link radio bearer.
  • the dedicated information may be the displayed indication information to explicitly indicate that the bearer corresponding to the bearer identifier supports switching to the direct link radio bearer.
  • the dedicated information is an implicit indication
  • the implicit indication is included in the configuration information of the first information or the first bearer.
  • the dedicated information may be an implicit indication information, and the implicit indication may be used to indicate that the bearer support corresponding to the bearer identifier is switched to the direct link radio bearer.
  • the first bearer includes: a data radio bearer, an evolved UMTS terrestrial radio access network radio access bearer E-RAB, an evolved packet system EPS bearer, or an S1 bearer. .
  • the bearer may be a complete bearer or a segment of the bearer.
  • the first bearer identification includes an E-RAB identification.
  • the bearer identity is preferably an E-RAB identity.
  • the network node comprises a mobility management entity MME, a second base station, or a terminal device.
  • the information including the bearer identifier and the dedicated information may be from the MME, other base stations or terminal devices in various ways.
  • the network node is the MME
  • the first information further includes a handover indication
  • the first base station is configured according to the first bearer identifier and a dedicated message. Instructing the user equipment to switch the first bearer to the direct link radio bearer, including: the first base station indicating the user equipment according to the handover indication, the first bearer identifier, and the dedicated information And the first bearer corresponding to the first bearer identifier is switched to a direct link radio bearer.
  • the handover time may be determined by the MME, and the base station instructs the user equipment to switch the bearer corresponding to the bearer identifier to the direct link radio bearer according to the handover indication, the bearer identifier, and the dedicated information of the MME.
  • the network node is the second base station
  • the first base station indicates, according to the first bearer identifier and the dedicated information, that the user equipment uses the first bearer Switching to the direct link radio bearer, the first base station determining, according to the first bearer identifier and the dedicated information, that the first bearer supports handover to a direct link radio bearer
  • the second base station sends the second information, where the second information includes configuration information of the first bearer identifier and the direct link radio bearer, so that the second base station determines that the first bearer support is switched to Directly connecting the link radio bearer, and transmitting the configuration information of the direct link radio bearer to the user equipment, where the user equipment uses the first bearer according to the configuration information of the direct link radio bearer Switch to the direct link radio bearer.
  • the first base station instructs the second base station to control the user equipment to switch the bearer corresponding to the bearer identifier to the direct link radio bearer.
  • the first base station after the first base station is configured to switch the first bearer to the direct link radio bearer according to the first bearer identifier and the dedicated information, The method further includes: the first base station sends request information to the MME, where the request information carries the first bearer identifier, where the first bearer identifier is used by the MME to perform core network side E- according to the first bearer identifier.
  • the MME is requested to release the resources occupied by the bearer before the handover, so that the communication resources can be effectively utilized.
  • the method before the first base station receives the first information sent by the first network node, the method further includes: the first base station sending a third to the user equipment The third information is used to indicate that the user equipment performs data transmission by using a base station relay mode.
  • the base station may further indicate, by using the information, that the user equipment uses the base station relay mode to perform data transmission.
  • a second aspect provides a bearer switching method, including: a network node sending first information to a first base station, where the first information includes a first bearer identifier and dedicated information, where the dedicated information is used to indicate the first
  • the first bearer corresponding to the bearer identifier supports switching to the direct link radio bearer.
  • the dedicated information includes one or more of the following information: indication information, dedicated quality of service scale value QCI identification, dedicated allocation and retention priority ARP identification, or service The identifier, wherein the service identifier is an identifier that supports a service that is switched to a direct link radio bearer.
  • the dedicated information is an implicit indication
  • the implicit indication is included in the configuration information of the first information or the first bearer.
  • the first bearer includes: a data radio bearer, an evolved UMTS terrestrial radio access network radio access bearer E-RAB, an evolved packet system EPS bearer, or an S1 bearer. .
  • the first bearer identification includes an E-RAB identification.
  • the network node comprises a mobility management entity MME, a second base station, or a terminal device.
  • the network node is the MME
  • the first information further includes a handover indication, where the handover indication is used to indicate that the first base station is configured according to the handover And the first bearer identifier and the dedicated information, where the user equipment is configured to switch the first bearer corresponding to the first bearer identifier to a direct link radio bearer.
  • the network node is the second base station
  • the method further includes: the network node receiving the second information sent by the first base station, where The second information includes configuration information of the first bearer identifier and a direct link radio bearer; the network node determines that the first bearer supports handover to a direct link radio bearer; The configuration information of the link radio bearer is sent to the user equipment, so that the user equipment switches the first bearer to the direct according to the first bearer identifier and the configuration information of the direct link radio bearer. Connected to the link radio bearer.
  • a third aspect provides a base station device, where the base station device includes: a receiving unit, configured to receive first information sent by a network node, where the first information includes a first bearer identifier and dedicated information, where The specific information is used to indicate that the first bearer corresponding to the first bearer identifier supports switching to the direct link radio bearer.
  • the base station device further includes: a sending unit, configured to: according to the first bearer identifier and the dedicated information, instruct the user equipment to switch the first bearer to a direct link Road radio bearer.
  • the dedicated information includes one or more of the following information: indication information, a dedicated quality of service scale value QCI identifier, a dedicated allocation and retention priority ARP identifier, or The service identifier, where the service identifier is an identifier that supports a service that is switched to a directly connected link radio bearer.
  • the dedicated information is an implicit indication
  • the implicit indication is included in the configuration information of the first information or the first bearer.
  • the first bearer includes: a data radio bearer, an evolved UMTS terrestrial radio access network radio access bearer E-RAB, an evolved packet system EPS bearer, or an S1 bearer. .
  • the first bearer identification includes an E-RAB identification.
  • the network node comprises a mobility management entity MME, a second base station, or a terminal device.
  • the network node is the MME
  • the first information further includes a handover indication
  • the sending unit is specifically configured to: according to the handover indication, the first a bearer identifier and the dedicated information, instructing the user equipment to switch the first bearer corresponding to the first bearer identifier to a direct link radio bearer.
  • the network node is the second base station
  • the sending unit is specifically configured to: determine the first bearer according to the first bearer identifier and specific information. Supporting switching to the direct link radio bearer; transmitting second information to the second base station, where the second information includes configuration information of the first bearer identifier and the direct link radio bearer, so that the Determining, by the second base station, that the first bearer supports switching to the direct link radio bearer, and transmitting configuration information of the direct link radio bearer to the user equipment, where the user equipment is according to the direct link
  • the configuration information of the radio bearer switches the first bearer to the direct link radio bearer.
  • the sending unit is further configured to send to the MME And sending the request information, where the request information carries the first bearer identifier, where the first bearer identifier is used by the MME to perform a core network side E-RAB bearer, an EPS bearer, or an S1 bearer release according to the first bearer identifier.
  • the sending unit is further configured to send, to the user equipment, third information, where the third information is used to indicate that the user equipment uses a base station transit mode to perform data transmission. .
  • the fourth aspect provides a network node, where the network node includes: a sending unit, configured to send first information to the first base station, where the first information includes a first bearer identifier and dedicated information, where the dedicated information is used by The first bearer corresponding to the first bearer identifier is configured to switch to the direct link radio bearer.
  • the dedicated information includes one or more of the following information: indication information, dedicated quality of service scale value QCI identification, dedicated allocation and retention priority ARP identification, or service The identifier, wherein the service identifier is an identifier that supports a service that is switched to a direct link radio bearer.
  • the dedicated information is an implicit indication
  • the implicit indication is included in configuration information of the first information or the first bearer.
  • the first bearer includes: a data radio bearer, an evolved UMTS terrestrial radio access network radio access bearer E-RAB, an evolved packet system EPS bearer, or an S1 bearer. .
  • the first bearer identity includes an E-RAB identity.
  • the network node comprises a mobility management entity MME, a second base station, or a terminal device.
  • the network node is the MME
  • the first information further includes a handover indication, where the handover indication is used to indicate that the first base station is configured according to the handover And the first bearer identifier and the dedicated information, where the user equipment is configured to switch the first bearer corresponding to the first bearer identifier to a direct link radio bearer.
  • the network node is the second base station, and the network node further includes: a receiving unit, configured to receive second information sent by the first base station, where The second information includes configuration information of the first bearer identifier and the direct link radio bearer, and the determining unit is configured to determine that the first bearer supports switching to the direct link radio bearer, and the sending unit further uses And transmitting the configuration information of the direct link radio bearer to the user equipment, so that the user equipment, according to the first bearer identifier and the configuration information of the direct link radio bearer, A bearer switches to a direct link radio bearer.
  • a receiving unit configured to receive second information sent by the first base station, where The second information includes configuration information of the first bearer identifier and the direct link radio bearer
  • the determining unit is configured to determine that the first bearer supports switching to the direct link radio bearer
  • the sending unit further uses And transmitting the configuration information of the direct link radio bearer to the user equipment, so that the user equipment, according to the first bearer identifier and the configuration information
  • a base station device in a fifth aspect, includes: a receiver, where the receiver is configured to receive first information sent by a network node, where the first information includes a first bearer identifier and dedicated information, The dedicated information is used to indicate that the first bearer corresponding to the first bearer identifier supports switching to the direct link radio bearer.
  • the base station device further includes: a transmitter, where the transmitter is configured to: according to the first bearer identifier and the dedicated information, instruct the user equipment to switch the first bearer to Direct link radio bearer.
  • the dedicated information includes one or more of the following information: indication information, a dedicated quality of service scale value QCI identifier, a dedicated allocation and retention priority ARP identifier, or The service identifier, where the service identifier is an identifier that supports a service that is switched to a directly connected link radio bearer.
  • the dedicated information is an implicit indication
  • the implicit indication is included in the configuration information of the first information or the first bearer.
  • the first bearer includes: a data radio bearer, an evolved UMTS terrestrial radio access network radio access bearer E-RAB, an evolved packet system EPS bearer, or an S1 bearer. .
  • the first bearer identity includes an E-RAB identity.
  • the network node comprises a mobility management entity MME, a second base station, or a terminal device.
  • the network node is the MME
  • the first information further includes a handover indication
  • the transmitter is specifically configured to: according to the handover indication, the first a bearer identifier and the dedicated information, instructing the user equipment to switch the first bearer corresponding to the first bearer identifier to a direct link radio bearer.
  • the network node is the second base station
  • the transmitter is specifically configured to: determine the first bearer according to the first bearer identifier and dedicated information. Supporting switching to the direct link radio bearer; transmitting second information to the second base station, where the second information includes configuration information of the first bearer identifier and the direct link radio bearer, so that the Determining, by the second base station, that the first bearer supports switching to the direct link radio bearer, and transmitting configuration information of the direct link radio bearer to the user equipment, where the user equipment is according to the direct link
  • the configuration information of the radio bearer switches the first bearer to the direct link radio bearer.
  • the transmitter is further configured to: send request information to the MME, where the request information carries the first bearer identifier, where the first bearer identifier is used by the The MME performs the core network side E-RAB bearer, the EPS bearer, or the release of the S1 bearer according to the first bearer identifier.
  • the transmitter is further configured to: send, to the user equipment, third information, where the third information is used to indicate that the user equipment uses a base station transit mode to perform data. transmission.
  • the sixth aspect provides a network node, where the network node includes: a transmitter, where the transmitter is configured to send first information to the first base station, where the first information includes a first bearer identifier and dedicated information, The dedicated information is used to indicate that the first bearer corresponding to the first bearer identifier supports switching to the direct link radio bearer.
  • the dedicated information includes one or more of the following information: indication information, dedicated quality of service scale value QCI identification, dedicated allocation and retention priority ARP identification, or service The identifier, wherein the service identifier is an identifier that supports a service that is switched to a direct link radio bearer.
  • the dedicated information is an implicit indication
  • the implicit indication is included in the configuration information of the first information or the first bearer.
  • the first bearer includes: a data radio bearer, an evolved UMTS terrestrial radio access network radio access bearer E-RAB, an evolved packet system EPS bearer, or an S1 bearer. .
  • the first bearer identity includes an E-RAB identity.
  • the network node comprises a mobility management entity MME, a second base station, or a terminal device.
  • the network node is the MME
  • the first information further includes a handover indication, where the handover indication is used to indicate that the first base station is configured according to the handover And the first bearer identifier and the dedicated information, where the user equipment is configured to switch the first bearer corresponding to the first bearer identifier to a direct link radio bearer.
  • the network node is the second base station, the network node further includes: a receiver and a processor; and the receiver is configured to receive, send by the first base station The second information, where the second information includes configuration information of the first bearer identifier and a direct link radio bearer; the processor is configured to determine that the first bearer supports handover to a direct link radio bearer The transmitter is further configured to send the configuration information of the direct link radio bearer to the user equipment, so that the user equipment is configured according to the first bearer identifier and the direct link radio bearer. The configuration information is used to switch the first bearer to a direct link radio bearer.
  • a bearer switching method, a base station device, and a network node provided by the embodiments of the present invention have the following beneficial effects:
  • the base station receives the information sent by the network node, and the information includes the bearer identifier and the dedicated information, where the dedicated information indicates that the bearer corresponding to the bearer identifier supports switching to the direct link radio bearer, so that the base station can identify the handover timely and accurately according to the information.
  • the bearer to the direct link is the information sent by the network node, and the information includes the bearer identifier and the dedicated information, where the dedicated information indicates that the bearer corresponding to the bearer identifier supports switching to the direct link radio bearer, so that the base station can identify the handover timely and accurately according to the information.
  • Figure 1 is a schematic diagram of V2V/V2I communication
  • FIG. 2 is a schematic diagram of communication for transmitting a V2X message using terminal direct communication
  • FIG. 3 is a schematic diagram of communication using a base station to transmit a V2X message
  • Figure 4 is a schematic diagram of the bearer
  • FIG. 5 is a schematic diagram of E-RAB and SLRB bearer switching according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of an interaction process of a bearer switching method according to an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of an interaction process of another bearer switching method according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of an interaction process of another bearer switching method according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of an interaction process of another bearer switching method according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a base station device according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of another base station device according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a network node according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of another network node according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of still another base station device according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of still another base station device according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of still another network node according to an embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of still another network node according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of E-RAB and SLRB bearer switching according to an embodiment of the present invention.
  • a user equipment currently uses a base station transfer mode for data transmission, that is, data transmission is performed on the first bearer, according to the network.
  • the state or the user equipment service needs to be switched from the first bearer to the SLRB bearer for data transmission.
  • the control base station of the user equipment itself does not know whether the first bearer supports handover to the SLRB bearer.
  • the base station receives the information sent by the network node, where the information includes the bearer identifier and the dedicated information, where the dedicated information indicates that the bearer support corresponding to the bearer identifier is switched to the direct link radio bearer, so that the base station can timely, according to the information, Accurately identify bearers that are switched to direct links.
  • FIG. 6 is a schematic diagram of an interaction process of a bearer switching method according to an embodiment of the present invention.
  • the method involves two network elements, a first base station and a network node, and the method includes the following steps:
  • the network node sends the first information to the first base station.
  • the first base station receives the first information sent by the network node.
  • the first information includes a first bearer identifier and dedicated information, where the dedicated information is used to indicate that the first bearer corresponding to the first bearer identifier supports handover to a direct link radio bearer.
  • the dedicated information may be displayed indication information to explicitly indicate the bearer
  • the corresponding bearer support is switched to the direct link radio bearer.
  • the dedicated information includes one or more of the following information: indication information, a dedicated QoS Class Identifier (QCI) identifier, a dedicated allocation and retention priority (English: Allocation and Retention Priority, Abbreviation: ARP) identifier, or service identifier, where the service identifier is an identifier that supports a service that is switched to a direct link radio bearer.
  • the service may be a short-range communication service, and/or a V2V service, and/or a V2P service.
  • the dedicated information may be an implicit indication information, and the implicit indication may be used to save the signaling resource to indicate that the bearer corresponding to the bearer identifier supports switching to the direct link radio bearer.
  • the dedicated information is an implicit indication, and the implicit indication is included in the configuration information of the first information or the first bearer. For example, it may be implicitly indicated by a dedicated information name or a dedicated E-RAB identification.
  • the first bearer includes: a data radio bearer, an evolved UMTS terrestrial radio access network radio access bearer E-RAB, an evolved packet system EPS bearer, or an S1 bearer. That is, the first bearer may be a complete bearer or a segment of the bearer.
  • the first bearer identifier is preferably an E-RAB identifier.
  • the first bearer is preferably an E-RAB bearer.
  • the E-RAB identifier has an association relationship with the corresponding data radio bearer, and/or the EPS bearer, and/or the identifier of the S1 bearer. .
  • the first bearer identifier may also be a data bearer identifier.
  • the first bearer is preferably a wireless data bearer.
  • E-RAB evolved UMTS terrestrial radio access network radio access bearer
  • EPS bearer evolved packet system EPS bearer
  • S1 bearer the data bearer identifier and the corresponding E-RAB, and/or EPS bearer, and / or the relationship between the identifiers carried by S1.
  • corresponding information may be configured for each first bearer identifier from the cell design, or the same dedicated information may be corresponding to multiple first bearer identifiers.
  • the method further includes the step of: determining, by the first base station, that the first bearer supports switching to a direct link radio bearer according to the first bearer identifier and the dedicated information.
  • the network node includes a mobility management entity MME, a second base station, or a terminal device. That is, the information including the bearer identifier and the dedicated information may be from the MME, other base stations or terminal devices in various ways.
  • a bearer switching method is provided according to an embodiment of the present invention, where a base station sends by using a receiving network node
  • the information includes the bearer identifier and the dedicated information, where the dedicated information indicates that the bearer support corresponding to the bearer identifier is switched to the direct link radio bearer, so that the base station can timely and accurately identify the switch to the direct link according to the information. Hosted.
  • FIG. 7 is a schematic diagram of an interaction process of another bearer switching method according to an embodiment of the present invention.
  • the method involves three network elements of a first base station, a network node and a user equipment, and the method comprises the following steps:
  • the first base station sends third information to the user equipment.
  • the user equipment performs data transmission by using a base station relay mode.
  • the difference between the embodiment and the embodiment shown in FIG. 6 is that before the radio bearer handover is performed, the user equipment currently uses the base station transit mode to perform data transmission, that is, the user equipment performs data transmission between the base station and the base station.
  • the user equipment uses the base station relay mode to perform data transmission after receiving the third information of the first base station.
  • the third information is used to indicate that the user equipment uses the base station relay mode for data transmission.
  • the third information may be sent by radio resource control (English: Radio Resource Control, RRC for short) or system information.
  • the third information is used to indicate that the base station only supports the base station transit transmission mode (or the Uu port transmission mode).
  • the UE determines to use the base station relay transmission mode at or after the time when the UE receives the third information.
  • the third information is used to indicate that the base station supports the UE to independently select to use the base station transit transmission mode or the direct link transmission mode.
  • the UE may independently select the transmission mode according to its own capabilities and service requirements at or after the time when the UE receives the third information.
  • the UE independently selects to use the base station relay transmission mode.
  • the third information is used to instruct the UE to send a transmission mode request to the base station.
  • the UE transmits a transmission mode request to the base station at or after the time when the UE receives the third information.
  • the transmission mode request may carry the transmission mode that the UE expects, and may include a base station transit transmission mode, or a direct link transmission mode, or a base station transit transmission mode and a direct link transmission mode.
  • the transmission mode request may carry service information, so that the base station determines the transmission mode according to the service information.
  • the transmission mode request may carry measurement information, so that the base station determines the transmission mode according to the measurement information.
  • the base station determines the transmission mode according to the transmission mode request, and sends the transmission mode configuration information to the UE, where the transmission mode configuration information indicates that the UE uses the base station transit transmission mode or the direct link transmission mode.
  • the network establishes different EPS bearers between the user equipment and the P-GW for the user equipment according to requirements.
  • the bearer includes: a data radio bearer, an E-RAB bearer, an EPS bearer, or an S1 bearer.
  • the network node sends the first information to the first base station.
  • the first base station receives the first information sent by the network node.
  • the first base station instructs the user equipment to switch the first bearer to the direct link radio bearer according to the first bearer identifier and the dedicated information.
  • the user equipment switches the first bearer to the direct link radio bearer.
  • the difference between the embodiment and the embodiment shown in FIG. 6 is that after the first base station receives the first information of the network node, the first base station indicates, according to the first bearer identifier and the dedicated information, that the user equipment is to be the first The bearer switches to the direct link radio bearer, and the user equipment switches the first bearer to the direct link radio bearer.
  • the base station can promptly and accurately indicate that the user equipment switches the E-UTRAN radio access bearer supporting the handover to the direct link radio bearer transmission according to the received bearer identifier and the dedicated information.
  • the base station receives the information sent by the network node, where the information includes the bearer identifier and the dedicated information, where the dedicated information indicates that the bearer support corresponding to the bearer identifier is switched to the direct link radio bearer. Therefore, the base station can timely and accurately identify the bearer switched to the direct link according to the information, and switch the E-UTRAN radio access bearer supporting the handover to the direct link bearer transmission; the base station indicates the user equipment by using the information.
  • the base station transit mode performs data transmission.
  • FIG. 8 is a schematic diagram of an interaction process of another bearer switching method according to an embodiment of the present invention.
  • the method involves three network elements of a first base station, an MME and a user equipment, and the method includes the following steps:
  • the first base station sends third information to the user equipment.
  • the user equipment performs data transmission by using a base station relay mode.
  • the MME sends the first information to the first base station.
  • the network node is an MME.
  • the first information may be E-RAB setup information, E-RAB modification information, handover request information, or handover control information.
  • the method may further include the following steps:
  • the MME receives the non-access stratum (Non-Access Stratum, NAS) information sent by the UE, and the MME determines the first bearer of the first service that needs to be established/modified/switched according to the NAS information, and obtains the first bearer.
  • the identifier, wherein the first bearer identifier may be an E-RAB identifier.
  • the MME identifies, by using the NAS information, the first bearer that the first service needs to establish/modify/switch, and the first bearer needs to support switching to the direct link transmission.
  • one of the conditions for the MME to determine that the first bearer of the first service needs to support handover to the direct link transmission is to identify that the first service is a short-range communication service.
  • the MME directly determines that the first service is a short-distance service by using the NAS information, and further determines, by using the NAS information, that the first service is a short-distance service, by negotiating with other control network elements of the UE.
  • the first service may be a V2V service.
  • the first information further includes a handover indication
  • the MME instructs the base station to perform the bearer handover timing.
  • the first base station receives the first information sent by the MME.
  • the first base station instruct the user equipment to switch the first bearer corresponding to the first bearer identifier to the direct link radio bearer.
  • the user equipment switches the first bearer to the direct link radio bearer.
  • the difference between this embodiment and the embodiment shown in FIG. 6 and FIG. 7 is that the MME determines the timing at which the base station performs bearer switching.
  • the MME when transmitting the first information, includes the handover indication in the first information, and the first base station, according to the handover indication, the first bearer identifier, and the dedicated information, instructs the user equipment to switch the first bearer corresponding to the first bearer identifier to the direct connection.
  • Link radio bearer when transmitting the first information, includes the handover indication in the first information, and the first base station, according to the handover indication, the first bearer identifier, and the dedicated information, instructs the user equipment to switch the first bearer corresponding to the first bearer identifier to the direct connection.
  • Link radio bearer when transmitting the first information, includes the handover indication in the first information, and the first base station, according to the handover indication, the first bearer identifier, and the dedicated information, instructs the user equipment to switch the first bearer corresponding to the first bearer
  • the base station determines the timing of initiating the handover.
  • the first information does not need to include the handover.
  • the base station may send the measurement configuration information to the UE, and determine to switch at least one of the first bearers to the direct link radio bearer according to the measurement report information reported by the UE.
  • the base station may also directly trigger to switch at least one of the first bearers to the direct link radio bearer.
  • the base station can decide the timing of initiating the handover by itself, and the base station can flexibly decide.
  • the first base station sends the request information to the MME, where the request information carries the first bearer identifier, where the first bearer identifier is used by the MME to perform a core network side E-RAB bearer, an EPS bearer, or Release of the S1 bearer.
  • the difference between the embodiment and the embodiment shown in FIG. 7 and FIG. 8 is that after the first base station instructs the user equipment to switch the first bearer to the direct link radio bearer, the first base station also requests the MME to release the bearer.
  • the base station receives the information sent by the network node, where the information includes the bearer identifier and the dedicated information, where the dedicated information indicates that the bearer support corresponding to the bearer identifier is switched to the direct link radio bearer. Therefore, the base station can timely and accurately identify the bearer switched to the direct link according to the information, and switch the E-UTRAN radio access bearer supporting the handover to the direct link bearer transmission; the base station indicates the user equipment by using the information.
  • the base station transits the data transmission; the MME determines the timing at which the base station performs the bearer handover; after completing the handover of the bearer, the base station requests the MME to release the resources occupied by the bearer before the handover, so that the communication resources can be effectively utilized.
  • FIG. 9 is a schematic diagram of an interaction process of another bearer switching method according to an embodiment of the present invention.
  • the method involves four network elements: a first base station, a second base station, a user equipment, and an MME.
  • the method includes the following steps:
  • the second base station sends the first information to the first base station.
  • the network node is the second base station.
  • This scenario includes, but is not limited to, handover from eNB2 to eNB1 when the UE moves from eNB2 to eNB1.
  • the eNB2 notifies the eNB1 of the E-RAB configuration of the UE, so that the eNB1 recognizes the bearer supporting the handover to the direct link.
  • the first information may be handover request information or handover confirmation information.
  • the handover means that the UE switches from eNB2 to eNB1.
  • the first base station receives the first information sent by the second base station.
  • the first base station determines, according to the first bearer identifier and the dedicated information, that the first bearer supports switching to the direct link radio bearer.
  • the first base station sends the second information to the second base station.
  • the second information includes configuration information of the first bearer identifier and a direct link radio bearer.
  • the second base station receives the second information sent by the first base station, and determines that the first bearer supports switching to the direct link radio bearer.
  • the second base station sends configuration information of the direct link radio bearer to the user equipment.
  • the user equipment switches the first bearer to the direct link radio bearer according to the configuration information of the direct link radio bearer.
  • the configuration information of the direct link radio bearer of the first base station is forwarded by the second base station to the user equipment.
  • the first base station sends the second information to the second base station, where the second information includes configuration information of the first bearer identifier and the direct link radio bearer, so that the second base station determines the first bearer Supporting switching to a direct link radio bearer and configuring the direct link radio bearer
  • the information is sent to the user equipment, and the user equipment switches the first bearer to the direct link radio bearer according to the configuration information of the direct link radio bearer.
  • the second information may be handover confirmation information.
  • the second base station sends the request information to the MME, where the request information carries the first bearer identifier, where the first bearer identifier is used by the MME to perform a core network side E-RAB bearer, an EPS bearer according to the first bearer identifier, or Release of the S1 bearer.
  • the difference between the embodiment and the embodiment shown in FIG. 7 and FIG. 8 is that after the first base station instructs the user equipment to switch the first bearer to the direct link radio bearer, the second base station also requests the MME to release the bearer.
  • the eNB2 sends the request information to the MME, where the request information carries the E-RAB identifier, so that the MME performs the core network side E-RAB bearer, the EPS bearer, or the release of the S1 bearer according to the E-RAB identifier.
  • the request information may be E-RAB release indication information, or may be path switch request information.
  • the request information may further carry a release indication for indicating that the bearer corresponding to the E-RAB identifier needs to be released.
  • the eNB1 may directly send radio resource control (Radio Resource Control, RRC for short) reconfiguration information to the UE, where the RRC reconfiguration information carries the first bearer identifier and the direct link.
  • RRC Radio Resource Control
  • the UE switches the first bearer to the direct link radio bearer according to the RRC reconfiguration information.
  • the eNB1 sends the request information to the MME, where the request information carries the first bearer identifier, where the first bearer identifier is used by the MME to perform the core network side E-RAB bearer, the EPS bearer, or the S1 according to the E-RAB identifier.
  • the release of the bearer is possible to the MME.
  • the request information may be E-RAB release indication information, or may be path switch request information.
  • the request information may further carry a release indication for indicating that the bearer corresponding to the E-RAB identifier needs to be released.
  • the base station receives the information sent by the network node, where the information includes the bearer identifier and the dedicated information, where the dedicated information indicates that the bearer support corresponding to the bearer identifier is switched to the direct link radio bearer. Therefore, the base station can timely and accurately identify the bearer switched to the direct link according to the information, and switch the E-UTRAN radio access bearer supporting the handover to the direct link radio bearer transmission; the base station indicates the user equipment by using the information.
  • the base station transit mode is used for data transmission; the second base station forwards the configuration information of the direct link radio bearer of the first base station to the user equipment; after completing the handover of the bearer, the base station requests the MME to release the resources occupied by the bearer before the handover, Communication resources can be used effectively.
  • FIG. 10 is a schematic structural diagram of a base station device according to an embodiment of the present disclosure, where the base station device 1000 includes:
  • the receiving unit 11 is configured to receive the first information that is sent by the network node, where the first information includes the first bearer identifier and the dedicated information, where the dedicated information is used to indicate that the first bearer support corresponding to the first bearer identifier is switched to Direct link radio bearer.
  • the first information includes a first bearer identifier and dedicated information, where the dedicated information is used to indicate that the first bearer corresponding to the first bearer identifier supports handover to a direct link radio bearer.
  • the dedicated information may be the displayed indication information to explicitly indicate that the bearer corresponding to the bearer identifier supports switching to the direct link radio bearer.
  • the dedicated information includes one or more of the following information: indication information, a dedicated quality of service scale value identifier, a dedicated allocation and retention priority identifier, or a service identifier, wherein the service identifier is configured to support switching to a direct link
  • the service may be a short-distance communication service, a V2V service, or a V2P service.
  • the dedicated information may be an implicit indication information, and the implicit indication may be used to save the signaling resource to indicate that the bearer corresponding to the bearer identifier supports switching to the direct link radio bearer.
  • the dedicated information is an implicit indication, and the implicit indication is included in the configuration information of the first information or the first bearer. For example, it may be implicitly indicated by a dedicated information name or a dedicated E-RAB identification.
  • the first bearer includes: a data radio bearer, an evolved UMTS terrestrial radio access network radio access bearer E-RAB, an evolved packet system EPS bearer, or an S1 bearer. That is, the first bearer may be a complete bearer or a segment of the bearer.
  • the first bearer identifier is preferably an E-RAB identifier.
  • the first bearer is preferably an E-RAB bearer.
  • the E-RAB The identifier has an association relationship with the corresponding data radio bearer, the EPS bearer, or the identifier carried by the S1.
  • the first bearer identifier may also be a data bearer identifier.
  • the first bearer is preferably a wireless data bearer.
  • the data bearer identifier is corresponding to the E-RAB, the EPS bearer, or the S1 bearer. There is an association between the identifiers.
  • corresponding information may be configured for each first bearer identifier from the cell design, or the same dedicated information may be corresponding to multiple first bearer identifiers.
  • the network node includes a mobility management entity MME, a second base station, or a terminal device. That is, the information including the bearer identifier and the dedicated information may be from the MME, other base stations or terminal devices in various ways.
  • the base station receives the information sent by the network node, where the information includes the bearer identifier and the dedicated information, where the dedicated information indicates that the bearer support corresponding to the bearer identifier is switched to the direct link radio bearer. Therefore, the base station can switch to the bearer of the direct link in time and accurately according to the information.
  • FIG. 11 is a schematic structural diagram of another base station device according to an embodiment of the present disclosure, where the base station device 2000 includes:
  • the receiving unit 21 is configured to receive the first information that is sent by the network node, where the first information includes the first bearer identifier and the dedicated information, where the dedicated information is used to indicate that the first bearer support corresponding to the first bearer identifier is switched to Direct link radio bearer.
  • the first information may be E-RAB setup information, E-RAB modification information, handover request information, or handover control information.
  • the network node is a second base station.
  • This scenario includes, but is not limited to, handover from eNB2 to eNB1 when the UE moves from eNB2 to eNB1.
  • the eNB2 notifies the eNB1 of the E-RAB configuration of the UE, so that the eNB1 recognizes the bearer supporting the handover to the direct link.
  • the first information may be handover request information or handover confirmation information.
  • the handover means that the UE switches from eNB2 to eNB1.
  • the sending unit 22 is configured to instruct the user equipment to switch the first bearer to the direct link radio bearer according to the first bearer identifier and the dedicated information.
  • the first base station After receiving the first information of the network node, the first base station determines, according to the first bearer identifier, The dedicated information indicates that the user equipment switches the first bearer to the direct link radio bearer, and the user equipment switches the first bearer to the direct link radio bearer.
  • the base station can promptly and accurately indicate that the user equipment switches the E-UTRAN radio access bearer supporting the handover to the direct link radio bearer transmission according to the received bearer identifier and the dedicated information.
  • the sending unit 22 is further configured to send the third information to the user equipment, where the third information is used to indicate that the user equipment uses the base station transit mode to perform data transmission.
  • the user equipment Before performing radio bearer switching, the user equipment currently uses the base station transit mode for data transmission, that is, the user equipment performs data transmission between the base station and the base station.
  • the user equipment uses the base station relay mode to perform data transmission after receiving the third information of the first base station.
  • the third information is used to indicate that the user equipment uses the base station relay mode for data transmission.
  • the third information may be sent by using radio resource control specific information or system information.
  • the third information is used to indicate that the base station only supports the base station transit transmission mode (or the Uu port transmission mode).
  • the UE determines to use the base station relay transmission mode at or after the time when the UE receives the third information.
  • the third information is used to indicate that the base station supports the UE to independently select to use the base station transit transmission mode or the direct link transmission mode.
  • the UE may independently select the transmission mode according to its own capabilities and service requirements at or after the time when the UE receives the third information.
  • the UE independently selects to use the base station relay transmission mode.
  • the third information is used to instruct the UE to send a transmission mode request to the base station.
  • the UE transmits a transmission mode request to the base station at or after the time when the UE receives the third information.
  • the transmission mode request may carry the transmission mode that the UE expects, and may include a base station transit transmission mode, or a direct link transmission mode, or a base station transit transmission mode and a direct link transmission mode.
  • the transmission mode request may carry service information, so that the base station determines the transmission mode according to the service information.
  • the transmission mode request may carry measurement information, so that the base station determines the transmission mode according to the measurement information.
  • the base station determines the transmission mode according to the transmission mode request, and sends the transmission mode configuration information to the UE, where the transmission mode configuration information indicates that the UE uses the base station transit transmission mode or the direct link transmission mode.
  • the bearer includes: a data radio bearer, an E-RAB bearer, an EPS bearer, or an S1 bearer.
  • the network node is the MME
  • the first information further includes a handover indication
  • the sending unit 22 is specifically configured to:
  • the user equipment is instructed to switch the first bearer corresponding to the first bearer identifier to a direct link radio bearer according to the handover indication, the first bearer identifier, and the dedicated information.
  • the MME instructs the base station to perform bearer switching.
  • the MME when transmitting the first information, includes the handover indication in the first information, and the first base station, according to the handover indication, the first bearer identifier, and the dedicated information, instructs the user equipment to switch the first bearer corresponding to the first bearer identifier to the direct connection.
  • Link radio bearer
  • the base station determines the timing of initiating the handover.
  • the first information does not need to include the handover indication.
  • the base station may send the measurement configuration information to the UE, and determine to switch at least one of the first bearers to the direct link radio bearer according to the measurement report information reported by the UE.
  • the base station may also directly trigger to switch at least one of the first bearers to the direct link radio bearer.
  • the base station can decide the timing of initiating the handover by itself, and the base station can flexibly decide.
  • the network node is the second base station
  • the sending unit 22 is specifically configured to:
  • the second information includes configuration information of the first bearer identifier and the direct link radio bearer, so that the second base station determines the first bearer support Switching to the direct link radio bearer, and transmitting the configuration information of the direct link radio bearer to the user equipment, where the user equipment is configured according to the configuration information of the direct link radio bearer A bearer switches to a direct link radio bearer.
  • the second information may be handover confirmation information.
  • the sending unit 22 is further configured to send the request information to the MME, where the request information carries the first bearer identifier, so that the MME performs the core network side E-RAB bearer, the EPS bearer, or the S1 according to the first bearer identifier. The release of the bearer.
  • the first base station instructs the user equipment to switch the first bearer to the direct link radio bearer
  • the first The base station also requests the release of the bearer from the MME.
  • the base station requests the MME to release the resources occupied by the bearer before the handover, so that the communication resources can be effectively utilized.
  • the base station receives the information sent by the network node, where the information includes the bearer identifier and the dedicated information, where the dedicated information indicates that the bearer support corresponding to the bearer identifier is switched to the direct link radio bearer. Therefore, the base station can timely and accurately identify the bearer switched to the direct link according to the information, and switch the E-UTRAN radio access bearer supporting the handover to the direct link radio bearer transmission; the base station indicates the user equipment by using the information.
  • the eNB or the base station itself determines the timing at which the base station performs bearer handover, or the second base station forwards the handover indication of the first base station to the user equipment; after completing the handover of the bearer, the base station requests the MME to release the pre-switching By carrying the resources occupied, the communication resources can be effectively utilized.
  • FIG. 12 is a schematic structural diagram of a network node according to an embodiment of the present disclosure, where the network node 3000 includes:
  • the sending unit 31 is configured to send the first information to the first base station, where the first information includes a first bearer identifier and dedicated information, where the dedicated information is used to indicate that the first bearer support corresponding to the first bearer identifier is switched to Direct link radio bearer.
  • the base station receives the information sent by the network node, where the information includes the bearer identifier and the dedicated information, where the dedicated information indicates that the bearer corresponding to the bearer identifier supports switching to the direct link radio bearer. Therefore, the base station can timely and accurately identify the bearer switched to the direct link according to the information.
  • FIG. 13 is a schematic structural diagram of another network node according to an embodiment of the present disclosure, where the network node 4000 includes:
  • the sending unit 41 is configured to send the first information to the first base station, where the first information includes a first bearer identifier and dedicated information, where the dedicated information is used to indicate that the first bearer support corresponding to the first bearer identifier is switched to Direct link radio bearer.
  • the receiving unit 42 is configured to receive the second information sent by the first base station, where the second information includes configuration information of the first bearer identifier and a direct link radio bearer;
  • a determining unit 43 configured to determine that the first bearer supports switching to a direct link radio bearer
  • the sending unit 41 is further configured to send the configuration information of the direct link radio bearer to the user equipment, so that the user equipment is configured according to the first bearer identifier and the direct link radio bearer configuration information. And switching the first bearer to a direct link radio bearer.
  • the base station receives the information sent by the network node, where the information includes the bearer identifier and the dedicated information, where the dedicated information indicates that the bearer corresponding to the bearer identifier supports switching to the direct link radio bearer. Therefore, the base station can timely and accurately identify the bearer switched to the direct link according to the information, and switch the E-UTRAN radio access bearer supporting the handover to the direct link radio bearer transmission; the base station can indicate the user equipment by using the information.
  • the base station transit mode is used for data transmission; the MME or the base station itself determines the timing at which the base station performs bearer handover, or the second base station forwards the handover indication of the first base station to the user equipment; after completing the handover of the bearer, the base station requests the MME to release the handover before The resources occupied by the bearers can make the communication resources be effectively utilized.
  • FIG. 14 is a schematic structural diagram of still another base station device according to an embodiment of the present disclosure, where the base station device 5000 includes: a receiver 51;
  • the receiver 51 is configured to receive first information that is sent by the network node, where the first information includes a first bearer identifier and dedicated information, where the dedicated information is used to indicate that the first bearer identifier corresponding to the first bearer identifier supports switching. To the direct link radio bearer.
  • the base station receives the information sent by the network node, where the information includes the bearer identifier and the dedicated information, where the dedicated information indicates that the bearer support corresponding to the bearer identifier is switched to the direct link radio bearer. Therefore, the base station can timely and accurately identify the bearer switched to the direct link according to the information.
  • FIG. 15 is a schematic structural diagram of still another base station device according to an embodiment of the present disclosure, where the base station device 6000 includes: a receiver 61 and a transmitter 62;
  • the receiver 61 is configured to receive the first information that is sent by the network node, where the first information includes a first bearer identifier and the dedicated information, where the dedicated information is used to indicate that the first bearer identifier corresponding to the first bearer identifier supports switching. To the direct link radio bearer.
  • the transmitter 62 is configured to instruct the user equipment to switch the first bearer to a direct link radio bearer according to the first bearer identifier and the dedicated information.
  • the dedicated information includes one or more of the following information: indication information, a dedicated quality of service scale value QCI identifier, a dedicated allocation and retention priority ARP identifier, or a service identifier, where the service Identifies the identity of the service that supports switching to the directly connected link radio bearer.
  • the specific information is an implicit indication
  • the implicit indication is included in the configuration information of the first information or the first bearer.
  • the first bearer includes: a data radio bearer, an evolved UMTS terrestrial radio access network radio access bearer E-RAB, an evolved packet system EPS bearer, or an S1 bearer.
  • the first bearer identifier includes an E-RAB identifier.
  • the network node includes a mobility management entity MME, a second base station, or a terminal device.
  • the network node is the MME
  • the first information further includes a handover indication
  • the transmitter 62 is specifically configured to:
  • the user equipment is instructed to switch the first bearer corresponding to the first bearer identifier to a direct link radio bearer according to the handover indication, the first bearer identifier, and the dedicated information.
  • the network node is the second base station, and the transmitter 62 is specifically configured to:
  • the second base station Sending the second information to the second base station, where the second information includes configuration information of the first bearer identifier and the direct link radio bearer, so that the second base station determines the first bearer support Switching to the direct link radio bearer, and transmitting the configuration information of the direct link radio bearer to the user equipment, where the user equipment is configured according to the configuration information of the direct link radio bearer A bearer switches to a direct link radio bearer.
  • the transmitter 62 is further configured to:
  • the request information carries the first bearer identifier, where the first bearer identifier is used by the MME to perform a core network side E-RAB bearer, an EPS bearer, or an S1 bearer according to the first bearer identifier. freed.
  • the transmitter 62 is further configured to:
  • the base station transit mode performs data transmission.
  • the base station receives the information sent by the network node, where the information includes the bearer identifier and the dedicated information, where the dedicated information indicates that the bearer support corresponding to the bearer identifier is switched to the direct link radio bearer. Therefore, the base station can timely and accurately identify the bearer switched to the direct link according to the information, and switch the E-UTRAN radio access bearer supporting the handover to the direct link radio bearer transmission; the base station can indicate the user equipment by using the information.
  • the base station transit mode is used for data transmission; the MME or the base station itself determines the timing at which the base station performs bearer handover, or the second base station forwards the handover indication of the first base station to the user equipment; after completing the handover of the bearer, the base station requests the MME to release the handover before The resources occupied by the bearers can make the communication resources be effectively utilized.
  • FIG. 16 is a schematic structural diagram of another network node according to an embodiment of the present invention, where the network node 7000 includes: a transmitter 71;
  • the transmitter 71 is configured to send first information to the first base station, where the first information includes a first bearer identifier and dedicated information, where the dedicated information is used to indicate that the first bearer identifier corresponding to the first bearer identifier supports switching. To the direct link radio bearer.
  • the base station receives the information sent by the network node, where the information includes the bearer identifier and the dedicated information, where the dedicated information indicates that the bearer corresponding to the bearer identifier supports switching to the direct link radio bearer. Therefore, the base station can timely and accurately identify the bearer switched to the direct link according to the information.
  • FIG. 17 is a schematic structural diagram of still another network node according to an embodiment of the present invention, where the network node 8000 includes: a transmitter 81;
  • the transmitter 81 is configured to send the first information to the first base station, where the first information includes a first bearer identifier and dedicated information, where the dedicated information is used to indicate that the first bearer identifier corresponding to the first bearer identifier supports switching. To the direct link radio bearer.
  • the dedicated information includes one or more of the following information: indication information, a dedicated quality of service scale value QCI identifier, a dedicated allocation and retention priority ARP identifier, or a service identifier, where the service Identifies the identity of the service that supports switching to the directly connected link radio bearer.
  • the dedicated information is an implicit indication
  • the implicit indication is included in the The first information or the configuration information of the first bearer.
  • the first bearer includes: a data radio bearer, an evolved UMTS terrestrial radio access network radio access bearer E-RAB, an evolved packet system EPS bearer, or an S1 bearer.
  • the first bearer identifier includes an E-RAB identifier.
  • the network node includes a mobility management entity MME, a second base station, or a terminal device.
  • the network node is the MME
  • the first information further includes a handover indication, where the handover indication is used to indicate, by the first base station, according to the handover indication, the first bearer identifier.
  • the dedicated information instructing the user equipment to switch the first bearer corresponding to the first bearer identifier to a direct link radio bearer.
  • the network node is the second base station, and the network node 8000 further includes: a receiver 82 and a processor 83;
  • the receiver 82 is configured to receive the second information sent by the first base station, where the second information includes configuration information of the first bearer identifier and a direct link radio bearer;
  • the processor 83 is configured to determine that the first bearer supports switching to a direct link radio bearer
  • the transmitter 81 is further configured to send the configuration information of the direct link radio bearer to the user equipment, so that the user equipment is configured according to the first bearer identifier and the direct link radio bearer.
  • the configuration information is used to switch the first bearer to a direct link radio bearer.
  • the base station receives the information sent by the network node, where the information includes the bearer identifier and the dedicated information, where the dedicated information indicates that the bearer corresponding to the bearer identifier supports switching to the direct link radio bearer. Therefore, the base station can timely and accurately identify the bearer switched to the direct link according to the information, and switch the E-UTRAN radio access bearer supporting the handover to the direct link radio bearer transmission; the base station can indicate the user equipment by using the information.
  • the base station transit mode is used for data transmission; the MME or the base station itself determines the timing at which the base station performs bearer handover, or the second base station forwards the handover indication of the first base station to the user equipment; after completing the handover of the bearer, the base station requests the MME to release the handover before The resources occupied by the bearers can make the communication resources be effectively utilized.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a computer.
  • the computer readable medium may include a random access memory (RAM), a read-only memory (ROM), and an electrically erasable programmable read-only memory (Electrically Erasable Programmable).
  • EEPROM Electrically Error Read-Only Memory
  • CD-ROM Compact Disc Read-Only Memory
  • Any connection may suitably be a computer readable medium.
  • the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, Then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, wireless and microwave are included in the fixing of the associated medium.
  • DSL Digital Subscriber Line
  • a disk and a disc include a compact disc (CD), a laser disc, a compact disc, a digital versatile disc (DVD), a floppy disk, and a Blu-ray disc, wherein the disc is usually magnetically copied, and the disc is The laser is used to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media.

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Abstract

本发明实施例公开了一种无线承载切换方法及基站设备、网络节点。基站通过接收网络节点发送的信息，该信息包括承载标识和专用信息，该专用信息指示该承载标识对应的承载支持切换至直连链路无线承载，从而基站可以根据该信息及时、准确地识别切换至直连链路的承载。

Description

承载切换方法及基站设备、网络节点 技术领域
本发明涉及通信技术领域，尤其涉及一种承载切换方法及基站设备、网络节点。
背景技术
目前，车辆可以通过车辆与车辆之间通信(英文：Vehicle to Vehicle，简称：V2V)或者车辆与路边基础设施通信(英文：Vehicle to Infrastructure，简称：V2I)或者车辆与行人之间的通信(英文：Vehicle to Pedestrian，简称：V2P)或者车辆与网络通信(英文：Vehicle to Network，简称：V2N)来及时获取路况信息或接收信息服务，这些通信方式可以统称为V2X通信(其中，X代表任何事物)。如图1所示的V2V/V2I通信示意图，车辆通过V2V通信，可以将自身的车速、行驶方向、具体位置、是否踩了紧急刹车等信息广播给周围车量，通过获取该类信息驾驶员可以更好的感知视距外的交通状况，从而对危险状况作出提前预判进而作出避让。而对于V2I通信，除了上述安全信息的交互外，路边基础设施还可以为车辆提供各类服务信息和数据网络的接入，不停车收费、车内娱乐等功能都极大的提高了交通智能化。我们称将V2X通信所使用的网络成为车联网。
LTE是目前主流的无线通信技术，其中终端直连通信(英文：Device to Device，简称：D2D)技术被作为重要特性且进行了标准化工作，其支持用户终端之间进行直连通信。考虑到部分V2X业务(例如V2V/V2I)通信场景也属于终端直连通信，如图2所示的使用终端直连通信传输V2X消息的通信示意图，可以通过D2D技术来传输V2X业务。但有时由于建筑物的遮挡(例如十字路口)或者车辆需要将消息传播更远等需求，如图3所示的利用基站传输V2X消息的通信示意图，车辆可以通过将信息传给基站再由基站传给其他车辆来实现车辆网通信。其中车辆与周围终端通过直连通信的接口可以成为PC5接口，而车辆与基站之间的接口可以称为Uu接口。因此，网络需要根据网络状况或UE业务需求等条件配置UE在使用基站中转方式与直连通信方式之间动态切换。
在现有技术中，用户设备(英文：User Equipment，简称：UE)通过基站传 输数据时，网络都会根据UE不同业务的服务质量(英文：Quality of Service，简称：QoS)需求，为UE在UE和公用数据网网关(英文：Public Data Network Gateway，简称：P-GW)之间建立不同的演进分组系统(英文：Evolved Packet System，简称：EPS)承载，进而使用这些不同的EPS承载传输不同的业务。如图4所示的承载示意图，每条EPS承载在UE至服务网关(英文：Serving GateWay，简称：S-GW)之间的这段承载称为演进的UMTS陆地无线接入网无线接入承载(英文：E-UTRAN Radio Access Bearer，简称：E-RAB)，E-RAB承载由一条S1承载(英文：S1Bearer)和一条无线承载(英文：Radio Bearer)构成。
在实际中，用户可能同时使用V2V业务和其他业务，比如，用户正在使用E-RAB1传输V2V业务，同时使用E-RAB2传输在线导航业务。当用户的V2V业务需要从基站中转方式转换为直连链路发送方式时，需要从E-RAB1切换至直连链路无线承载(英文：sidelink radio bearer，简称：SLRB)，而其他业务不需要切换。这时，仅需要将V2V业务从E-RAB1切换至SLRB，而在线导航业务依然维持在E-RAB2传输。从这个场景来看，对于E-RAB来说，部分E-RAB支持切换至直连链路(或PC5)传输，而部分E-RAB不允许切换至直连链路传输。
然而，现有技术中基站(英文：eNodeB，简称：eNB)无法识别E-RAB是否支持切换至直连链路无线承载传输，进而无法实现将支持切换的E-RAB切换至直连链路无线承载传输。
发明内容
本发明实施例提供了一种承载切换方法及基站设备、网络节点，以准确、及时地识别切换至直连链路的承载。
第一方面，提供了一种承载切换方法，包括：第一基站接收网络节点发送的第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
在该实现方式中，基站通过接收网络节点发送的信息，该信息包括承载标识和专用信息，该专用信息指示该承载标识对应的承载支持切换至直连链路无线承载，从而基站可以根据该信息及时、准确地实现将支持切换的E-UTRAN 无线接入承载切换至直连链路无线承载传输。
结合第一方面，在一种可能的设计中，所述方法还包括：所述第一基站根据所述第一承载标识和专用信息，指示用户设备将所述第一承载切换至直连链路无线承载。
在该实现方式中，基站根据接收到的承载标识和专用信息，可以及时、准确地指示用户设备将支持切换的E-UTRAN无线接入承载切换至直连链路无线承载传输。
结合第一方面，在另一种可能的设计中，所述专用信息包括一个或多个以下信息：指示信息，专用的服务质量标度值QCI标识，专用的分配和保留优先级ARP标识，或业务标识，其中，所述业务标识为支持切换至直连链路无线承载的业务的标识。
在该实现方式中，专用信息可以是显示的指示信息，以明确指示该承载标识对应的承载支持切换至直连链路无线承载。
结合第一方面，在又一种可能的设计中，所述专用信息为隐式指示，所述隐式指示包含在所述第一信息或所述第一承载的配置信息中。
在该实现方式中，专用信息可以是隐式的指示信息，通过隐式的指示，可以节约信令资源地指示该承载标识对应的承载支持切换至直连链路无线承载。
结合第一方面，在又一种可能的设计中，所述第一承载包括：数据无线承载，演进的UMTS陆地无线接入网无线接入承载E-RAB，演进分组系统EPS承载，或S1承载。
在该实现方式中，该承载可以是完整的承载，也可以是其中的一段承载。
结合第一方面，在又一种可能的设计中，所述第一承载标识包括E-RAB标识。
在该实现方式中，承载标识优选为E-RAB标识。
结合第一方面，在又一种可能的设计中，所述网络节点包括移动性管理实体MME，第二基站，或终端设备。
在该实现方式中，包含承载标识和专用信息的信息可以来自MME，其它基站或终端设备，方式多样。
结合第一方面，在又一种可能的设计中，所述网络节点为所述MME，所述第一信息还包括切换指示，所述第一基站根据所述第一承载标识和专用信 息，指示用户设备将所述第一承载切换至直连链路无线承载，包括：所述第一基站根据所述切换指示、所述第一承载标识和所述专用信息，指示所述用户设备将所述第一承载标识对应的所述第一承载切换至直连链路无线承载。
在该实现方式中，可以由MME确定切换时机，基站根据MME的切换指示、承载标识和专用信息，指示用户设备将该承载标识对应的承载切换至直连链路无线承载。
结合第一方面，在又一种可能的设计中，所述网络节点为所述第二基站，所述第一基站根据所述第一承载标识和专用信息，指示用户设备将所述第一承载切换至直连链路无线承载，包括：所述第一基站根据所述第一承载标识和专用信息，确定所述第一承载支持切换至直连链路无线承载；所述第一基站向所述第二基站发送第二信息，其中，所述第二信息包括所述第一承载标识和直连链路无线承载的配置信息，以使所述第二基站确定所述第一承载支持切换至直连链路无线承载，并将所述直连链路无线承载的配置信息发送给所述用户设备，所述用户设备根据所述直连链路无线承载的配置信息，将所述第一承载切换至直连链路无线承载。
在该实现方式中，由第一基站指示第二基站控制用户设备将该承载标识对应的承载切换至直连链路无线承载。
结合第一方面，在又一种可能的设计中，所述第一基站根据所述第一承载标识和专用信息，指示用户设备将所述第一承载切换至直连链路无线承载之后，所述方法还包括：所述第一基站向MME发送请求信息，所述请求信息携带所述第一承载标识，所述第一承载标识用于所述MME根据第一承载标识执行核心网侧E-RAB承载，EPS承载，或S1承载的释放。
在该实现方式中，在完成承载的切换后，请求MME释放切换前的承载所占用的资源，可以使通信资源得到有效利用。
结合第一方面，在又一种可能的设计中，所述第一基站接收第一网络节点发送的第一信息之前，所述方法还包括：所述第一基站向所述用户设备发送第三信息，所述第三信息用于指示所述用户设备使用基站中转方式进行数据传输。
在该实现方式中，基站还可通过信息指示用户设备使用基站中转方式进行数据传输。
第二方面，提供了一种承载切换方法，包括：网络节点向第一基站发送第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
结合第二方面，在一种可能的设计中，所述专用信息包括一个或多个以下信息：指示信息，专用的服务质量标度值QCI标识，专用的分配和保留优先级ARP标识，或业务标识，其中，所述业务标识为支持切换至直连链路无线承载的业务的标识。
结合第二方面，在另一种可能的设计中，所述专用信息为隐式指示，所述隐式指示包含在所述第一信息或所述第一承载的配置信息中。
结合第二方面，在又一种可能的设计中，所述第一承载包括：数据无线承载，演进的UMTS陆地无线接入网无线接入承载E-RAB，演进分组系统EPS承载，或S1承载。
结合第二方面，在又一种可能的设计中，所述第一承载标识包括E-RAB标识。
结合第二方面，在又一种可能的设计中，所述网络节点包括移动性管理实体MME，第二基站，或终端设备。
结合第二方面，在又一种可能的设计中，所述网络节点为所述MME，所述第一信息还包括切换指示，所述切换指示用于指示所述第一基站根据所述切换指示、所述第一承载标识和所述专用信息，指示所述用户设备将所述第一承载标识对应的所述第一承载切换至直连链路无线承载。
结合第二方面，在又一种可能的设计中，所述网络节点为所述第二基站，所述方法还包括：所述网络节点接收所述第一基站发送的第二信息，其中，所述第二信息包括所述第一承载标识和直连链路无线承载的配置信息；所述网络节点确定所述第一承载支持切换至直连链路无线承载；所述网络节点将所述直连链路无线承载的配置信息发送给所述用户设备，以使所述用户设备根据所述第一承载标识和所述直连链路无线承载的配置信息，将所述第一承载切换至直连链路无线承载。
第三方面，提供了一种基站设备，所述基站设备包括：接收单元，用于接收网络节点发送的第一信息，所述第一信息包括第一承载标识和专用信息，所 述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
结合第三方面，在一种可能的设计中，所述基站设备还包括：发送单元，用于根据所述第一承载标识和专用信息，指示用户设备将所述第一承载切换至直连链路无线承载。
结合第三方面，在另一种可能的设计中，所述专用信息包括一个或多个以下信息：指示信息，专用的服务质量标度值QCI标识，专用的分配和保留优先级ARP标识，或业务标识，其中，所述业务标识为支持切换至直连链路无线承载的业务的标识。
结合第三方面，在又一种可能的设计中，所述专用信息为隐式指示，所述隐式指示包含在所述第一信息或所述第一承载的配置信息中。
结合第三方面，在又一种可能的设计中，所述第一承载包括：数据无线承载，演进的UMTS陆地无线接入网无线接入承载E-RAB，演进分组系统EPS承载，或S1承载。
结合第三方面，在又一种可能的设计中，所述第一承载标识包括E-RAB标识。
结合第三方面，在又一种可能的设计中，所述网络节点包括移动性管理实体MME，第二基站，或终端设备。
结合第三方面，在又一种可能的设计中，所述网络节点为所述MME，所述第一信息还包括切换指示，所述发送单元具体用于：根据所述切换指示、所述第一承载标识和所述专用信息，指示所述用户设备将所述第一承载标识对应的所述第一承载切换至直连链路无线承载。
结合第三方面，在又一种可能的设计中，所述网络节点为所述第二基站，所述发送单元具体用于：根据所述第一承载标识和专用信息，确定所述第一承载支持切换至直连链路无线承载；向所述第二基站发送第二信息，其中，所述第二信息包括所述第一承载标识和直连链路无线承载的配置信息，以使所述第二基站确定所述第一承载支持切换至直连链路无线承载，并将所述直连链路无线承载的配置信息发送给所述用户设备，所述用户设备根据所述直连链路无线承载的配置信息，将所述第一承载切换至直连链路无线承载。
结合第三方面，在又一种可能的设计中，所述发送单元还用于向MME发 送请求信息，所述请求信息携带所述第一承载标识，所述第一承载标识用于所述MME根据第一承载标识执行核心网侧E-RAB承载，EPS承载，或S1承载的释放。
结合第三方面，在又一种可能的设计中，所述发送单元还用于向所述用户设备发送第三信息，所述第三信息用于指示所述用户设备使用基站中转方式进行数据传输。
第四方面，提供了一种网络节点，所述网络节点包括：发送单元，用于向第一基站发送第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
结合第四方面，在一种可能的设计中，所述专用信息包括一个或多个以下信息：指示信息，专用的服务质量标度值QCI标识，专用的分配和保留优先级ARP标识，或业务标识，其中，所述业务标识为支持切换至直连链路无线承载的业务的标识。
结合第四方面，在另一种可能的设计中，所述专用信息为隐式指示，所述隐式指示包含在所述第一信息或所述第一承载的配置信息中。
结合第四方面，在又一种可能的设计中，所述第一承载包括：数据无线承载，演进的UMTS陆地无线接入网无线接入承载E-RAB，演进分组系统EPS承载，或S1承载。
结合第四方面，在又一种可能的设计中，所述第一承载标识包括E-RAB标识。
结合第四方面，在又一种可能的设计中，所述网络节点包括移动性管理实体MME，第二基站，或终端设备。
结合第四方面，在又一种可能的设计中，所述网络节点为所述MME，所述第一信息还包括切换指示，所述切换指示用于指示所述第一基站根据所述切换指示、所述第一承载标识和所述专用信息，指示所述用户设备将所述第一承载标识对应的所述第一承载切换至直连链路无线承载。
结合第四方面，在又一种可能的设计中，所述网络节点为所述第二基站，所述网络节点还包括：接收单元，用于接收所述第一基站发送的第二信息，其 中，所述第二信息包括所述第一承载标识和直连链路无线承载的配置信息；确定单元，用于确定所述第一承载支持切换至直连链路无线承载；发送单元还用于将所述直连链路无线承载的配置信息发送给所述用户设备，以使所述用户设备根据所述第一承载标识和所述直连链路无线承载的配置信息，将所述第一承载切换至直连链路无线承载。
第五方面，提供了一种基站设备，所述基站设备包括：接收器；所述接收器用于接收网络节点发送的第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
结合第五方面，在一种可能的设计中，所述基站设备还包括：发送器；所述发送器用于根据所述第一承载标识和专用信息，指示用户设备将所述第一承载切换至直连链路无线承载。
结合第五方面，在另一种可能的设计中，所述专用信息包括一个或多个以下信息：指示信息，专用的服务质量标度值QCI标识，专用的分配和保留优先级ARP标识，或业务标识，其中，所述业务标识为支持切换至直连链路无线承载的业务的标识。
结合第五方面，在又一种可能的设计中，所述专用信息为隐式指示，所述隐式指示包含在所述第一信息或所述第一承载的配置信息中。
结合第五方面，在又一种可能的设计中，所述第一承载包括：数据无线承载，演进的UMTS陆地无线接入网无线接入承载E-RAB，演进分组系统EPS承载，或S1承载。
结合第五方面，在又一种可能的设计中，所述第一承载标识包括E-RAB标识。
结合第五方面，在又一种可能的设计中，所述网络节点包括移动性管理实体MME，第二基站，或终端设备。
结合第五方面，在又一种可能的设计中，所述网络节点为所述MME，所述第一信息还包括切换指示，所述发送器具体用于：根据所述切换指示、所述第一承载标识和所述专用信息，指示所述用户设备将所述第一承载标识对应的所述第一承载切换至直连链路无线承载。
结合第五方面，在又一种可能的设计中，所述网络节点为所述第二基站，所述发送器具体用于：根据所述第一承载标识和专用信息，确定所述第一承载支持切换至直连链路无线承载；向所述第二基站发送第二信息，其中，所述第二信息包括所述第一承载标识和直连链路无线承载的配置信息，以使所述第二基站确定所述第一承载支持切换至直连链路无线承载，并将所述直连链路无线承载的配置信息发送给所述用户设备，所述用户设备根据所述直连链路无线承载的配置信息，将所述第一承载切换至直连链路无线承载。
结合第五方面，在又一种可能的设计中，所述发送器还用于：向MME发送请求信息，所述请求信息携带所述第一承载标识，所述第一承载标识用于所述MME根据第一承载标识执行核心网侧E-RAB承载，EPS承载，或S1承载的释放。
结合第五方面，在又一种可能的设计中，所述发送器还用于：向所述用户设备发送第三信息，所述第三信息用于指示所述用户设备使用基站中转方式进行数据传输。
第六方面，提供了一种网络节点，所述网络节点包括：发送器；所述发送器用于向第一基站发送第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
结合第六方面，在一种可能的设计中，所述专用信息包括一个或多个以下信息：指示信息，专用的服务质量标度值QCI标识，专用的分配和保留优先级ARP标识，或业务标识，其中，所述业务标识为支持切换至直连链路无线承载的业务的标识。
结合第六方面，在另一种可能的设计中，所述专用信息为隐式指示，所述隐式指示包含在所述第一信息或所述第一承载的配置信息中。
结合第六方面，在又一种可能的设计中，所述第一承载包括：数据无线承载，演进的UMTS陆地无线接入网无线接入承载E-RAB，演进分组系统EPS承载，或S1承载。
结合第六方面，在又一种可能的设计中，所述第一承载标识包括E-RAB标识。
结合第六方面，在又一种可能的设计中，所述网络节点包括移动性管理实体MME，第二基站，或终端设备。
结合第六方面，在又一种可能的设计中，所述网络节点为所述MME，所述第一信息还包括切换指示，所述切换指示用于指示所述第一基站根据所述切换指示、所述第一承载标识和所述专用信息，指示所述用户设备将所述第一承载标识对应的所述第一承载切换至直连链路无线承载。
结合第六方面，在又一种可能的设计中，所述网络节点为所述第二基站，所述网络节点还包括：接收器和处理器；所述接收器用于接收所述第一基站发送的第二信息，其中，所述第二信息包括所述第一承载标识和直连链路无线承载的配置信息；所述处理器用于确定所述第一承载支持切换至直连链路无线承载；所述发送器还用于将所述直连链路无线承载的配置信息发送给所述用户设备，以使所述用户设备根据所述第一承载标识和所述直连链路无线承载的配置信息，将所述第一承载切换至直连链路无线承载。
实施本发明实施例提供的一种承载切换方法及基站设备、网络节点，具有如下有益效果：
基站通过接收网络节点发送的信息，该信息包括承载标识和专用信息，该专用信息指示该承载标识对应的承载支持切换至直连链路无线承载，从而基站可以根据该信息及时、准确地识别切换至直连链路的承载。
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的前提下，还可以根据这些附图获得其他的附图。
图1为V2V/V2I通信示意图；
图2为使用终端直连通信传输V2X消息的通信示意图；
图3为利用基站传输V2X消息的通信示意图；
图4为承载示意图；
图5为本发明实施例提供的E-RAB和SLRB承载切换示意图；
图6为本发明实施例提供的一种承载切换方法的交互流程示意图；
图7为本发明实施例提供的另一种承载切换方法的交互流程示意图；
图8为本发明实施例提供的又一种承载切换方法的交互流程示意图；
图9为本发明实施例提供的又一种承载切换方法的交互流程示意图；
图10为本发明实施例提供的一种基站设备的结构示意图；
图11为本发明实施例提供的另一种基站设备的结构示意图；
图12为本发明实施例提供的一种网络节点的结构示意图；
图13为本发明实施例提供的另一种网络节点的结构示意图；
图14为本发明实施例提供的又一种基站设备的结构示意图；
图15为本发明实施例提供的又一种基站设备的结构示意图；
图16为本发明实施例提供的又一种网络节点的结构示意图；
图17为本发明实施例提供的又一种网络节点的结构示意图。
具体实施方式
图5为本发明实施例提供的E-RAB和SLRB承载切换示意图，在本发明实施例的场景中，用户设备当前使用基站中转方式进行数据传输，即在第一承载上进行数据传输，根据网络状态或用户设备业务需求等，需要从第一承载切换至SLRB承载上进行数据传输，但是用户设备的控制基站本身并不清楚该第一承载是否支持切换至SLRB承载。本发明实施例基站通过接收网络节点发送的信息，该信息包括承载标识和专用信息，该专用信息指示该承载标识对应的承载支持切换至直连链路无线承载，从而基站可以根据该信息及时、准确地识别切换至直连链路的承载。
图6为本发明实施例提供的一种承载切换方法的交互流程示意图。该方法涉及第一基站和网络节点两个网元，该方法包括以下步骤：
S101、网络节点向第一基站发送第一信息。
S102、第一基站接收网络节点发送的第一信息。
在本实施例中，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
作为一种实现方式，专用信息可以是显示的指示信息，以明确指示该承载 标识对应的承载支持切换至直连链路无线承载。所述专用信息包括一个或多个以下信息：指示信息，专用的服务质量标度值(英文：QoS Class Identifier，简称：QCI)标识，专用的分配和保留优先级(英文：Allocation and Retention Priority，简称：ARP)标识，或业务标识，其中，所述业务标识为支持切换至直连链路无线承载的业务的标识。该业务可以是短距离通信业务，和/或V2V业务，和/或V2P业务。
作为另一种实现方式，专用信息可以是隐式的指示信息，通过隐式的指示，可以节约信令资源地指示该承载标识对应的承载支持切换至直连链路无线承载。所述专用信息为隐式指示，所述隐式指示包含在所述第一信息或所述第一承载的配置信息中。例如，可以以专用信息名称或专用E-RAB标识来隐式指示。
在本实施例中，所述第一承载包括：数据无线承载，演进的UMTS陆地无线接入网无线接入承载E-RAB，演进分组系统EPS承载，或S1承载。即该第一承载可以是完整的承载，也可以是其中的一段承载。
具体地，该第一承载标识优选为E-RAB标识。第一承载优选为E-RAB承载。当第一承载为数据无线承载，或演进分组系统EPS承载，或S1承载时，E-RAB标识与对应的数据无线承载，和/或EPS承载，和/或S1承载的标识之间具有关联关系。
可选择的，该第一承载标识也可以是数据承载标识。第一承载优选为无线数据承载。当第一承载为演进的UMTS陆地无线接入网无线接入承载E-RAB，或演进分组系统EPS承载，或S1承载时，数据承载标识与对应的E-RAB，和/或EPS承载，和/或S1承载的标识之间具有关联关系。
可选地，从信元设计上，可以为每个第一承载标识都配置对应专用信息，也可以为多个第一承载标识对应同一个专用信息。
可选地，还包括步骤：所述第一基站根据所述第一承载标识和专用信息，确定所述第一承载支持切换至直连链路无线承载。
在本实施例中，所述网络节点包括移动性管理实体MME，第二基站，或终端设备。即包含承载标识和专用信息的信息可以来自MME，其它基站或终端设备，方式多样。
根据本发明实施例提供的一种承载切换方法，基站通过接收网络节点发送 的信息，该信息包括承载标识和专用信息，该专用信息指示该承载标识对应的承载支持切换至直连链路无线承载，从而基站可以根据该信息及时、准确地识别切换至直连链路的承载。
图7为本发明实施例提供的另一种承载切换方法的交互流程示意图。该方法涉及第一基站、网络节点和用户设备三个网元，该方法包括以下步骤：
S201、第一基站向用户设备发送第三信息。
S202、用户设备使用基站中转方式进行数据传输。
本实施例与图6所示的实施例的不同之处在于，在进行无线承载切换前，用户设备当前使用基站中转方式进行数据传输，即用户设备通过Uu接口与基站间进行数据传输。而用户设备是在接收到第一基站的第三信息后使用基站中转方式进行数据传输。第三信息用于指示用户设备使用基站中转方式进行数据传输。
具体的，可选地，所述第三信息可以通过无线资源控制(英文：Radio Resource Control，简称：RRC)专用信息或系统信息发送。
可选地，所述第三信息用于指示基站仅支持基站中转传输方式(或称为Uu口传输方式)。在这种情况下，UE收到所述第三信息的时刻或之后，确定使用基站中转传输方式。
可选地，第三信息用于指示基站支持UE自主选择使用基站中转传输方式或直连链路传输方式。在这种情况下，UE收到所述第三信息的时刻或之后，可以根据自身能力及业务需求自主选择传输方式。可选择的，UE自主选择了使用基站中转传输方式。
可选地，第三信息用于指示UE向基站发送传输方式请求。在这种情况下，UE收到所述第三信息的时刻或之后，向基站发送传输方式请求。可选择的，传输方式请求可以携带UE期待的传输方式，可以包括基站中转传输方式，或直连链路传输方式，或基站中转传输方式和直连链路传输方式均可以。可选择的，传输方式请求可以携带业务信息，以使基站根据业务信息确定传输方式。可选择的，传输方式请求可以携带测量信息，以使基站根据测量信息确定传输方式。基站根据传输方式请求确定传输方式，并向UE发送传输方式配置信息，所述传输方式配置信息指明UE使用基站中转传输方式或直连链路传输方式。
之后，网络根据需求为用户设备在用户设备和P-GW之间建立不同的EPS承载。该承载包括：数据无线承载，E-RAB承载，EPS承载，或S1承载。
S203、网络节点向第一基站发送第一信息。
S204、第一基站接收网络节点发送的第一信息。
S205、第一基站根据第一承载标识和专用信息，指示用户设备将第一承载切换至直连链路无线承载。
S206、用户设备将第一承载切换至直连链路无线承载。
本实施例与图6所示的实施例的不同之处还在于，第一基站在接收到网络节点的第一信息后，第一基站根据第一承载标识和专用信息，指示用户设备将第一承载切换至直连链路无线承载，用户设备将第一承载切换至直连链路无线承载。基站根据接收到的承载标识和专用信息，可以及时、准确地指示用户设备将支持切换的E-UTRAN无线接入承载切换至直连链路无线承载传输。
根据本发明实施例提供的一种承载切换方法，基站通过接收网络节点发送的信息，该信息包括承载标识和专用信息，该专用信息指示该承载标识对应的承载支持切换至直连链路无线承载，从而基站可以根据该信息及时、准确地识别切换至直连链路的承载，并实现将支持切换的E-UTRAN无线接入承载切换至直连链路承载传输；基站通过信息指示用户设备使用基站中转方式进行数据传输。
图8为本发明实施例提供的又一种承载切换方法的交互流程示意图。该方法涉及第一基站、MME和用户设备三个网元，该方法包括以下步骤：
S301、第一基站向用户设备发送第三信息。
S302、用户设备使用基站中转方式进行数据传输。
S303、MME向第一基站发送第一信息。
在本实施例中，该网络节点为MME。该第一信息可以是E-RAB建立信息，E-RAB修改信息，切换请求信息，或切换控制信息。
可选地，在S303之前，还可包括步骤：
MME接收UE发送的非接入层(英文：Non-Access Stratum，简称：NAS)信息，MME根据所述NAS信息确定需要建立/修改/切换的第一业务的第一承载，并获取第一承载标识，其中，第一承载标识可以是E-RAB标识。
具体的，MME通过NAS信息识别出第一业务需要建立/修改/切换的第一承载，并且第一承载需要支持切换至直连链路传输。
可选择的，MME判断第一业务的第一承载需要支持切换至直连链路传输的条件之一是识别出所述第一业务是短距离通信业务。可选择的，MME以通过NAS信息直接判断出第一业务是短距离业务，也可以通过NAS信息进一步与UE的其他控制网元协商确定第一业务是短距离业务。
可选择的，第一业务可以是V2V业务。
本实施例与图7、图8所示实施例的不同在于，第一信息还包括切换指示，由MME指示基站进行承载切换的时机。
S304、第一基站接收MME发送的第一信息。
S305、第一基站根据切换指示、第一承载标识和专用信息，指示用户设备将第一承载标识对应的第一承载切换至直连链路无线承载。
S306、用户设备将第一承载切换至直连链路无线承载。
本实施例与图6、图7所示实施例的不同在于，由MME决定基站进行承载切换的时机。MME在发送第一信息时，将切换指示包含在第一信息中，第一基站根据切换指示、第一承载标识和专用信息，指示用户设备将第一承载标识对应的第一承载切换至直连链路无线承载。
作为步骤S305-S306的一种替换方式，也可以在基站确认第一承载支持切换至直连链路无线承载后，由基站决定发起切换的时机，在该替换方式中，第一信息无需包括切换指示。在这种情况下，基站可以为UE发送测量配置信息，并根据UE上报的测量报告信息确定将至少一条所述第一承载切换至直连链路无线承载。此外，基站也可以直接触发将至少一条所述第一承载切换至直连链路无线承载。在该替换方式中，由基站自行决定发起切换的时机，基站可以灵活决定。
S307、第一基站向MME发送请求信息，所述请求信息携带所述第一承载标识，所述第一承载标识用于MME根据第一承载标识执行核心网侧E-RAB承载，EPS承载，或S1承载的释放。
本实施例与图7、图8所示实施例的不同还在于，在第一基站指示用户设备将第一承载切换至直连链路无线承载之后，第一基站还向MME请求承载的释放。
根据本发明实施例提供的一种承载切换方法，基站通过接收网络节点发送的信息，该信息包括承载标识和专用信息，该专用信息指示该承载标识对应的承载支持切换至直连链路无线承载，从而基站可以根据该信息及时、准确地识别切换至直连链路的承载，并实现将支持切换的E-UTRAN无线接入承载切换至直连链路承载传输；基站通过信息指示用户设备使用基站中转方式进行数据传输；由MME决定基站进行承载切换的时机；在完成承载的切换后，基站请求MME释放切换前的承载所占用的资源，可以使通信资源得到有效利用。
图9为本发明实施例提供的又一种承载切换方法的交互流程示意图。该方法涉及第一基站、第二基站、用户设备和MME四个网元，该方法包括以下步骤：
S401、第二基站向第一基站发送第一信息。
在本实施例中，网络节点为第二基站。该场景包含但不限于当UE从eNB2移动至eNB1时，需要从eNB2切换至eNB1。此时eNB2将UE的E-RAB配置通知eNB1，以使eNB1识别出支持切换至直连链路的承载。该第一信息可以是切换请求信息，或切换确认信息。该切换是指UE从eNB2切换至eNB1。
S402、第一基站接收第二基站发送的第一信息。
S403、第一基站根据第一承载标识和专用信息，确定第一承载支持切换至直连链路无线承载。
S404、第一基站向第二基站发送第二信息。
所述第二信息包括所述第一承载标识和直连链路无线承载的配置信息。
S405、第二基站接收第一基站发送的第二信息，并确定第一承载支持切换至直连链路无线承载。
S406、第二基站将直连链路无线承载的配置信息发送给用户设备。
S407、用户设备根据直连链路无线承载的配置信息，将第一承载切换至直连链路无线承载。
在本实施例中，由第二基站转发第一基站的直连链路无线承载的配置信息给用户设备。第一基站向第二基站发送第二信息，其中，所述第二信息包括所述第一承载标识和直连链路无线承载的配置信息，以使所述第二基站确定所述第一承载支持切换至直连链路无线承载，并将所述直连链路无线承载的配置 信息发送给所述用户设备，所述用户设备根据所述直连链路无线承载的配置信息，将所述第一承载切换至直连链路无线承载。具体地，该第二信息可以是切换确认信息。
S408、第二基站向MME发送请求信息，所述请求信息携带所述第一承载标识，所述第一承载标识用于MME根据第一承载标识执行核心网侧E-RAB承载，EPS承载，或S1承载的释放。
本实施例与图7、图8所示实施例的不同还在于，在第一基站指示用户设备将第一承载切换至直连链路无线承载之后，第二基站还向MME请求承载的释放。
具体地，eNB2向MME发送请求信息，所述请求信息携带E-RAB标识，以使MME根据E-RAB标识执行核心网侧E-RAB承载，EPS承载，或S1承载的释放。可选择的，所述请求信息可以是E-RAB释放指示信息，也可以是路径切换请求信息。当所述请求信息是路径切换请求信息时，所述信息还可以携带一个释放指示用于指明所述E-RAB标识对应的承载需要释放。
作为步骤S404-S407的一种替换方式，eNB1可以直接向UE发送无线资源控制(英文：Radio Resource Control，简称：RRC)重配信息，所述RRC重配信息携带第一承载标识和直连链路无线承载的配置信息。UE根据RRC重配信息，将所述第一承载切换至直连链路无线承载。可选择的，进一步的，eNB1向MME发送请求信息，所述请求信息携带第一承载标识，第一承载标识用于MME根据E-RAB标识执行核心网侧E-RAB承载，EPS承载，或S1承载的释放。可选择的，所述请求信息可以是E-RAB释放指示信息，也可以是路径切换请求信息。当所述请求信息是路径切换请求信息时，所述信息还可以携带一个释放指示用于指明所述E-RAB标识对应的承载需要释放。
根据本发明实施例提供的一种承载切换方法，基站通过接收网络节点发送的信息，该信息包括承载标识和专用信息，该专用信息指示该承载标识对应的承载支持切换至直连链路无线承载，从而基站可以根据该信息及时、准确地识别切换至直连链路的承载，并实现将支持切换的E-UTRAN无线接入承载切换至直连链路无线承载传输；基站通过信息指示用户设备使用基站中转方式进行数据传输；由第二基站转发第一基站的直连链路无线承载的配置信息给用户设备；在完成承载的切换后，基站请求MME释放切换前的承载所占用的资源， 可以使通信资源得到有效利用。
需要说明的是，对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制，因为根据本发明，某些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本发明所必须的。
图10为本发明实施例提供的一种基站设备的结构示意图，该基站设备1000包括：
接收单元11，用于接收网络节点发送的第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
在本实施例中，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
作为一种实现方式，专用信息可以是显示的指示信息，以明确指示该承载标识对应的承载支持切换至直连链路无线承载。所述专用信息包括一个或多个以下信息：指示信息，专用的服务质量标度值标识，专用的分配和保留优先级标识，或业务标识，其中，所述业务标识为支持切换至直连链路无线承载的业务的标识。该业务可以是短距离通信业务，V2V业务，或V2P业务。
作为另一种实现方式，专用信息可以是隐式的指示信息，通过隐式的指示，可以节约信令资源地指示该承载标识对应的承载支持切换至直连链路无线承载。所述专用信息为隐式指示，所述隐式指示包含在所述第一信息或所述第一承载的配置信息中。例如，可以以专用信息名称或专用E-RAB标识来隐式指示。
在本实施例中，所述第一承载包括：数据无线承载，演进的UMTS陆地无线接入网无线接入承载E-RAB，演进分组系统EPS承载，或S1承载。即该第一承载可以是完整的承载，也可以是其中的一段承载。
具体地，该第一承载标识优选为E-RAB标识。第一承载优选为E-RAB承载。当第一承载为数据无线承载，演进分组系统EPS承载，或S1承载时，E-RAB 标识与对应的数据无线承载，EPS承载，或S1承载的标识之间具有关联关系。
可选择的，该第一承载标识也可以是数据承载标识。第一承载优选为无线数据承载。当第一承载为演进的UMTS陆地无线接入网无线接入承载E-RAB，或演进分组系统EPS承载，或S1承载时，数据承载标识与对应的E-RAB，EPS承载，或S1承载的标识之间具有关联关系。
可选地，从信元设计上，可以为每个第一承载标识都配置对应专用信息，也可以为多个第一承载标识对应同一个专用信息。
在本实施例中，所述网络节点包括移动性管理实体MME，第二基站，或终端设备。即包含承载标识和专用信息的信息可以来自MME，其它基站或终端设备，方式多样。
根据本发明实施例提供的一种基站设备，基站通过接收网络节点发送的信息，该信息包括承载标识和专用信息，该专用信息指示该承载标识对应的承载支持切换至直连链路无线承载，从而基站可以根据该信息及时、准确地切换至直连链路的承载。
图11为本发明实施例提供的另一种基站设备的结构示意图，该基站设备2000包括：
接收单元21，用于接收网络节点发送的第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
若该网络节点为MME。该第一信息可以是E-RAB建立信息，E-RAB修改信息，切换请求信息，或切换控制信息。
若该网络节点为第二基站。该场景包含但不限于当UE从eNB2移动至eNB1时，需要从eNB2切换至eNB1。此时eNB2将UE的E-RAB配置通知eNB1，以使eNB1识别出支持切换至直连链路的承载。该第一信息可以是切换请求信息，或切换确认信息。该切换是指UE从eNB2切换至eNB1。
发送单元22，用于根据所述第一承载标识和专用信息，指示用户设备将所述第一承载切换至直连链路无线承载。
第一基站在接收到网络节点的第一信息后，第一基站根据第一承载标识和 专用信息，指示用户设备将第一承载切换至直连链路无线承载，用户设备将第一承载切换至直连链路无线承载。基站根据接收到的承载标识和专用信息，可以及时、准确地指示用户设备将支持切换的E-UTRAN无线接入承载切换至直连链路无线承载传输。
可选地，当网络节点为MME，所述发送单元22还用于向所述用户设备发送第三信息，所述第三信息用于指示所述用户设备使用基站中转方式进行数据传输。
在进行无线承载切换前，用户设备当前使用基站中转方式进行数据传输，即用户设备通过Uu接口与基站间进行数据传输。而用户设备是在接收到第一基站的第三信息后使用基站中转方式进行数据传输。第三信息用于指示用户设备使用基站中转方式进行数据传输。
具体的，可选地，所述第三信息可以通过无线资源控制专用信息或系统信息发送。
可选地，所述第三信息用于指示基站仅支持基站中转传输方式(或称为Uu口传输方式)。在这种情况下，UE收到所述第三信息的时刻或之后，确定使用基站中转传输方式。
可选地，第三信息用于指示基站支持UE自主选择使用基站中转传输方式或直连链路传输方式。在这种情况下，UE收到所述第三信息的时刻或之后，可以根据自身能力及业务需求自主选择传输方式。可选择的，UE自主选择了使用基站中转传输方式。
可选地，第三信息用于指示UE向基站发送传输方式请求。在这种情况下，UE收到所述第三信息的时刻或之后，向基站发送传输方式请求。可选择的，传输方式请求可以携带UE期待的传输方式，可以包括基站中转传输方式，或直连链路传输方式，或基站中转传输方式和直连链路传输方式均可以。可选择的，传输方式请求可以携带业务信息，以使基站根据业务信息确定传输方式。可选择的，传输方式请求可以携带测量信息，以使基站根据测量信息确定传输方式。基站根据传输方式请求确定传输方式，并向UE发送传输方式配置信息，所述传输方式配置信息指明UE使用基站中转传输方式或直连链路传输方式。
之后，网络根据需求为用户设备在用户设备和P-GW之间建立不同的EPS 承载。该承载包括：数据无线承载，E-RAB承载，EPS承载，或S1承载。
作为切换时机的一种实现方式，所述网络节点为所述MME，所述第一信息还包括切换指示，所述发送单元22具体用于：
根据所述切换指示、所述第一承载标识和所述专用信息，指示所述用户设备将所述第一承载标识对应的所述第一承载切换至直连链路无线承载。
在该实现方式中，由MME指示基站进行承载切换的时机。MME在发送第一信息时，将切换指示包含在第一信息中，第一基站根据切换指示、第一承载标识和专用信息，指示用户设备将第一承载标识对应的第一承载切换至直连链路无线承载。
作为切换时机的一种替换方式，也可以在基站确认第一承载支持切换至直连链路无线承载后，由基站决定发起切换的时机，在该替换方式中，第一信息无需包括切换指示。在这种情况下，基站可以为UE发送测量配置信息，并根据UE上报的测量报告信息确定将至少一条所述第一承载切换至直连链路无线承载。此外，基站也可以直接触发将至少一条所述第一承载切换至直连链路无线承载。在该替换方式中，由基站自行决定发起切换的时机，基站可以灵活决定。
作为另一种实现方式，所述网络节点为所述第二基站，所述发送单元22具体用于：
根据所述第一承载标识和专用信息，确定所述第一承载支持切换至直连链路无线承载；
向所述第二基站发送第二信息，其中，所述第二信息包括所述第一承载标识和直连链路无线承载的配置信息，以使所述第二基站确定所述第一承载支持切换至直连链路无线承载，并将所述直连链路无线承载的配置信息发送给所述用户设备，所述用户设备根据所述直连链路无线承载的配置信息，将所述第一承载切换至直连链路无线承载。具体地，该第二信息可以是切换确认信息。
所述发送单元22还用于向MME发送请求信息，所述请求信息携带所述第一承载标识，以使所述MME根据第一承载标识执行核心网侧E-RAB承载，EPS承载，或S1承载的释放。
在第一基站指示用户设备将第一承载切换至直连链路无线承载之后，第一 基站还向MME请求承载的释放。在完成承载的切换后，基站请求MME释放切换前的承载所占用的资源，可以使通信资源得到有效利用。
根据本发明实施例提供的一种基站设备，基站通过接收网络节点发送的信息，该信息包括承载标识和专用信息，该专用信息指示该承载标识对应的承载支持切换至直连链路无线承载，从而基站可以根据该信息及时、准确地识别切换至直连链路的承载，并实现将支持切换的E-UTRAN无线接入承载切换至直连链路无线承载传输；基站通过信息指示用户设备使用基站中转方式进行数据传输；由MME或基站自身决定基站进行承载切换的时机，或由第二基站转发第一基站的切换指示给用户设备；在完成承载的切换后，基站请求MME释放切换前的承载所占用的资源，可以使通信资源得到有效利用。
图12为本发明实施例提供的一种网络节点的结构示意图，该网络节点3000包括：
发送单元31，用于向第一基站发送第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
根据本发明实施例提供的一种网络节点，基站通过接收网络节点发送的信息，该信息包括承载标识和专用信息，该专用信息指示该承载标识对应的承载支持切换至直连链路无线承载，从而基站可以根据该信息及时、准确地识别切换至直连链路的承载。
图13为本发明实施例提供的另一种网络节点的结构示意图，该网络节点4000包括：
发送单元41，用于向第一基站发送第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
接收单元42，用于接收所述第一基站发送的第二信息，其中，所述第二信息包括所述第一承载标识和直连链路无线承载的配置信息；
确定单元43，用于确定所述第一承载支持切换至直连链路无线承载；
发送单元41还用于将所述直连链路无线承载的配置信息发送给所述用户设备，以使所述用户设备根据所述第一承载标识和所述直连链路无线承载的配置信息，将所述第一承载切换至直连链路无线承载。
根据本发明实施例提供的一种网络节点，基站通过接收网络节点发送的信息，该信息包括承载标识和专用信息，该专用信息指示该承载标识对应的承载支持切换至直连链路无线承载，从而基站可以根据该信息及时、准确地识别切换至直连链路的承载，并实现将支持切换的E-UTRAN无线接入承载切换至直连链路无线承载传输；基站可通过信息指示用户设备使用基站中转方式进行数据传输；由MME或基站自身决定基站进行承载切换的时机，或由第二基站转发第一基站的切换指示给用户设备；在完成承载的切换后，基站请求MME释放切换前的承载所占用的资源，可以使通信资源得到有效利用。
图14为本发明实施例提供的又一种基站设备的结构示意图，该基站设备5000包括：接收器51；
所述接收器51用于接收网络节点发送的第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
根据本发明实施例提供的一种基站设备，基站通过接收网络节点发送的信息，该信息包括承载标识和专用信息，该专用信息指示该承载标识对应的承载支持切换至直连链路无线承载，从而基站可以根据该信息及时、准确地识别切换至直连链路的承载。
图15为本发明实施例提供的又一种基站设备的结构示意图，该基站设备6000包括：接收器61和发送器62；
所述接收器61用于接收网络节点发送的第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
所述发送器62用于根据所述第一承载标识和专用信息，指示用户设备将所述第一承载切换至直连链路无线承载。
作为一种实现方式，所述专用信息包括一个或多个以下信息：指示信息，专用的服务质量标度值QCI标识，专用的分配和保留优先级ARP标识，或业务标识，其中，所述业务标识为支持切换至直连链路无线承载的业务的标识。
作为另一种实现方式，所述专用信息为隐式指示，所述隐式指示包含在所述第一信息或所述第一承载的配置信息中。
作为又一种实现方式，所述第一承载包括：数据无线承载，演进的UMTS陆地无线接入网无线接入承载E-RAB，演进分组系统EPS承载，或S1承载。
作为又一种实现方式，所述第一承载标识包括E-RAB标识。
作为又一种实现方式，所述网络节点包括移动性管理实体MME，第二基站，或终端设备。
作为又一种实现方式，所述网络节点为所述MME，所述第一信息还包括切换指示，所述发送器62具体用于：
根据所述切换指示、所述第一承载标识和所述专用信息，指示所述用户设备将所述第一承载标识对应的所述第一承载切换至直连链路无线承载。
作为又一种实现方式，所述网络节点为所述第二基站，所述发送器62具体用于：
根据所述第一承载标识和专用信息，确定所述第一承载支持切换至直连链路无线承载；
向所述第二基站发送第二信息，其中，所述第二信息包括所述第一承载标识和直连链路无线承载的配置信息，以使所述第二基站确定所述第一承载支持切换至直连链路无线承载，并将所述直连链路无线承载的配置信息发送给所述用户设备，所述用户设备根据所述直连链路无线承载的配置信息，将所述第一承载切换至直连链路无线承载。
作为又一种实现方式，所述发送器62还用于：
向MME发送请求信息，所述请求信息携带所述第一承载标识，所述第一承载标识用于所述MME根据第一承载标识执行核心网侧E-RAB承载，EPS承载，或S1承载的释放。
作为又一种实现方式，所述发送器62还用于：
向所述用户设备发送第三信息，所述第三信息用于指示所述用户设备使用 基站中转方式进行数据传输。
根据本发明实施例提供的一种基站设备，基站通过接收网络节点发送的信息，该信息包括承载标识和专用信息，该专用信息指示该承载标识对应的承载支持切换至直连链路无线承载，从而基站可以根据该信息及时、准确地识别切换至直连链路的承载，并实现将支持切换的E-UTRAN无线接入承载切换至直连链路无线承载传输；基站可通过信息指示用户设备使用基站中转方式进行数据传输；由MME或基站自身决定基站进行承载切换的时机，或由第二基站转发第一基站的切换指示给用户设备；在完成承载的切换后，基站请求MME释放切换前的承载所占用的资源，可以使通信资源得到有效利用。
图16为本发明实施例提供的又一种网络节点的结构示意图，该网络节点7000包括：发送器71；
所述发送器71用于向第一基站发送第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
根据本发明实施例提供的一种网络节点，基站通过接收网络节点发送的信息，该信息包括承载标识和专用信息，该专用信息指示该承载标识对应的承载支持切换至直连链路无线承载，从而基站可以根据该信息及时、准确地识别切换至直连链路的承载。
图17为本发明实施例提供的又一种网络节点的结构示意图，该网络节点8000包括：发送器81；
所述发送器81用于向第一基站发送第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
作为一种实现方式，所述专用信息包括一个或多个以下信息：指示信息，专用的服务质量标度值QCI标识，专用的分配和保留优先级ARP标识，或业务标识，其中，所述业务标识为支持切换至直连链路无线承载的业务的标识。
作为另一种实现方式，所述专用信息为隐式指示，所述隐式指示包含在所 述第一信息或所述第一承载的配置信息中。
作为又一种实现方式，所述第一承载包括：数据无线承载，演进的UMTS陆地无线接入网无线接入承载E-RAB，演进分组系统EPS承载，或S1承载。
作为又一种实现方式，所述第一承载标识包括E-RAB标识。
作为又一种实现方式，所述网络节点包括移动性管理实体MME，第二基站，或终端设备。
作为又一种实现方式，所述网络节点为所述MME，所述第一信息还包括切换指示，所述切换指示用于指示所述第一基站根据所述切换指示、所述第一承载标识和所述专用信息，指示所述用户设备将所述第一承载标识对应的所述第一承载切换至直连链路无线承载。
作为又一种实现方式，所述网络节点为所述第二基站，所述网络节点8000还包括：接收器82和处理器83；
所述接收器82用于接收所述第一基站发送的第二信息，其中，所述第二信息包括所述第一承载标识和直连链路无线承载的配置信息；
所述处理器83用于确定所述第一承载支持切换至直连链路无线承载；
所述发送器81还用于将所述直连链路无线承载的配置信息发送给所述用户设备，以使所述用户设备根据所述第一承载标识和所述直连链路无线承载的配置信息，将所述第一承载切换至直连链路无线承载。
根据本发明实施例提供的一种网络节点，基站通过接收网络节点发送的信息，该信息包括承载标识和专用信息，该专用信息指示该承载标识对应的承载支持切换至直连链路无线承载，从而基站可以根据该信息及时、准确地识别切换至直连链路的承载，并实现将支持切换的E-UTRAN无线接入承载切换至直连链路无线承载传输；基站可通过信息指示用户设备使用基站中转方式进行数据传输；由MME或基站自身决定基站进行承载切换的时机，或由第二基站转发第一基站的切换指示给用户设备；在完成承载的切换后，基站请求MME释放切换前的承载所占用的资源，可以使通信资源得到有效利用。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
本发明实施例方法中的步骤可以根据实际需要进行顺序调整、合并和删 减。
本发明实施例装置中的单元可以根据实际需要进行合并、划分和删减。本领域的技术人员可以将本说明书中描述的不同实施例以及不同实施例的特征进行结合或组合。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到本发明可以用硬件实现，或固件实现，或它们的组合方式来实现。当使用软件实现时，可以将上述功能存储在计算机可读介质中或作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是计算机能够存取的任何可用介质。以此为例但不限于：计算机可读介质可以包括随机存取存储器(Random Access Memory，RAM)、只读存储器(Read-Only Memory，ROM)、电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质。此外。任何连接可以适当的成为计算机可读介质。例如，如果软件是使用同轴电缆、光纤光缆、双绞线、数字用户线(Digital Subscriber Line，DSL)或者诸如红外线、无线电和微波之类的无线技术从网站、服务器或者其他远程源传输的，那么同轴电缆、光纤光缆、双绞线、DSL或者诸如红外线、无线和微波之类的无线技术包括在所属介质的定影中。如本发明所使用的，盘(Disk)和碟(disc)包括压缩光碟(CD)、激光碟、光碟、数字通用光碟(DVD)、软盘和蓝光光碟，其中盘通常磁性的复制数据，而碟则用激光来光学的复制数据。上面的组合也应当包括在计算机可读介质的保护范围之内。
总之，以上所述仅为本发明技术方案的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (38)

  1. 一种承载切换方法，其特征在于，包括：
    第一基站接收网络节点发送的第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
  2. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    所述第一基站根据所述第一承载标识和专用信息，指示用户设备将所述第一承载切换至直连链路无线承载。
  3. 如权利要求1或2所述的方法，其特征在于，所述专用信息包括一个或多个以下信息：指示信息，专用的服务质量标度值QCI标识，专用的分配和保留优先级ARP标识，或业务标识，其中，所述业务标识为支持切换至直连链路无线承载的业务的标识。
  4. 如权利要求1或2所述的方法，其特征在于，所述专用信息为隐式指示，所述隐式指示包含在所述第一信息或所述第一承载的配置信息中。
  5. 如权利要求1-4任意一项所述的方法，其特征在于，所述第一承载包括：数据无线承载，演进的UMTS陆地无线接入网无线接入承载E-RAB，演进分组系统EPS承载，或S1承载。
  6. 如权利要求1-5任意一项所述的方法，其特征在于，所述第一承载标识包括E-RAB标识。
  7. 如权利要求1-6任意一项所述的方法，其特征在于，所述网络节点包括移动性管理实体MME，第二基站，或终端设备。
  8. 如权利要求7所述的方法，其特征在于，所述网络节点为所述MME，所述第一信息还包括切换指示，所述第一基站根据所述第一承载标识和专用信息，指示用户设备将所述第一承载切换至直连链路无线承载，包括：
    所述第一基站根据所述切换指示、所述第一承载标识和所述专用信息，指示所述用户设备将所述第一承载标识对应的所述第一承载切换至直连链路无线承载。
  9. 如权利要求7所述的方法，其特征在于，所述网络节点为所述第二基站，所述第一基站根据所述第一承载标识和专用信息，指示用户设备将所述第一承载切换至直连链路无线承载，包括：
    所述第一基站根据所述第一承载标识和专用信息，确定所述第一承载支持切换至直连链路无线承载；
    所述第一基站向所述第二基站发送第二信息，其中，所述第二信息包括所述第一承载标识和直连链路无线承载的配置信息，以使所述第二基站确定所述第一承载支持切换至直连链路无线承载，并将所述直连链路无线承载的配置信息发送给所述用户设备，所述用户设备根据所述直连链路无线承载的配置信息，将所述第一承载切换至直连链路无线承载。
  10. 如权利要求8或9所述的方法，其特征在于，所述第一基站根据所述第一承载标识和专用信息，指示用户设备将所述第一承载切换至直连链路无线承载之后，所述方法还包括：
    所述第一基站向MME发送请求信息，所述请求信息携带所述第一承载标识，所述第一承载标识用于所述MME根据第一承载标识执行核心网侧E-RAB承载，EPS承载，或S1承载的释放。
  11. 如权利要求2所述的方法，其特征在于，所述第一基站接收第一网络节点发送的第一信息之前，所述方法还包括：
    所述第一基站向所述用户设备发送第三信息，所述第三信息用于指示所述用户设备使用基站中转方式进行数据传输。
  12. 一种承载切换方法，其特征在于，包括：
    网络节点向第一基站发送第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
  13. 如权利要求12所述的方法，其特征在于，所述专用信息包括一个或多个以下信息：指示信息，专用的服务质量标度值QCI标识，专用的分配和保留优先级ARP标识，或业务标识，其中，所述业务标识为支持切换至直连链路无线承载的业务的标识。
  14. 如权利要求12所述的方法，其特征在于，所述专用信息为隐式指示，所述隐式指示包含在所述第一信息或所述第一承载的配置信息中。
  15. 如权利要求12-14任意一项所述的方法，其特征在于，所述第一承载包括：数据无线承载，演进的UMTS陆地无线接入网无线接入承载E-RAB，演进分组系统EPS承载，或S1承载。
  16. 如权利要求12-15任意一项所述的方法，其特征在于，所述第一承载标识包括E-RAB标识。
  17. 如权利要求12-16任意一项所述的方法，其特征在于，所述网络节点包括移动性管理实体MME，第二基站，或终端设备。
  18. 如权利要求17所述的方法，其特征在于，所述网络节点为所述MME，所述第一信息还包括切换指示，所述切换指示用于指示所述第一基站根据所述切换指示、所述第一承载标识和所述专用信息，指示所述用户设备将所述第一承载标识对应的所述第一承载切换至直连链路无线承载。
  19. 如权利要求17所述的方法，其特征在于，所述网络节点为所述第二基站，所述方法还包括：
    所述网络节点接收所述第一基站发送的第二信息，其中，所述第二信息包括所述第一承载标识和直连链路无线承载的配置信息；
    所述网络节点确定所述第一承载支持切换至直连链路无线承载；
    所述网络节点将所述直连链路无线承载的配置信息发送给所述用户设备，以使所述用户设备根据所述第一承载标识和所述直连链路无线承载的配置信息，将所述第一承载切换至直连链路无线承载。
  20. 一种基站设备，其特征在于，包括：
    接收单元，用于接收网络节点发送的第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持切换至直连链路无线承载。
  21. 如权利要求20所述的基站设备，其特征在于，所述基站设备还包括：
    发送单元，用于根据所述第一承载标识和专用信息，指示用户设备将所述第一承载切换至直连链路无线承载。
  22. 如权利要求20或21所述的基站设备，其特征在于，所述专用信息包括一个或多个以下信息：指示信息，专用的服务质量标度值QCI标识，专用的分配和保留优先级ARP标识，或业务标识，其中，所述业务标识为支持切换至直连链路无线承载的业务的标识。
  23. 如权利要求20或21所述的基站设备，其特征在于，所述专用信息为隐式指示，所述隐式指示包含在所述第一信息或所述第一承载的配置信息中。
  24. 如权利要求20-23任意一项所述的基站设备，其特征在于，所述第一承载包括：数据无线承载，演进的UMTS陆地无线接入网无线接入承载E-RAB，演进分组系统EPS承载，或S1承载。
  25. 如权利要求20-24任意一项所述的基站设备，其特征在于，所述第一承载标识包括E-RAB标识。
  26. 如权利要求20-25任意一项所述的基站设备，其特征在于，所述网络节点包括移动性管理实体MME，第二基站，或终端设备。
  27. 如权利要求26所述的基站设备，其特征在于，所述网络节点为所述MME，所述第一信息还包括切换指示，所述发送单元具体用于：
    根据所述切换指示、所述第一承载标识和所述专用信息，指示所述用户设备将所述第一承载标识对应的所述第一承载切换至直连链路无线承载。
  28. 如权利要求26所述的基站设备，其特征在于，所述网络节点为所述第二基站，所述发送单元具体用于：
    根据所述第一承载标识和专用信息，确定所述第一承载支持切换至直连链路无线承载；
    向所述第二基站发送第二信息，其中，所述第二信息包括所述第一承载标识和直连链路无线承载的配置信息，以使所述第二基站确定所述第一承载支持切换至直连链路无线承载，并将所述直连链路无线承载的配置信息发送给所述用户设备，所述用户设备根据所述直连链路无线承载的配置信息，将所述第一承载切换至直连链路无线承载。
  29. 如权利要求27或28所述的基站设备，其特征在于，所述发送单元还用于向MME发送请求信息，所述请求信息携带所述第一承载标识，所述第一承载标识用于所述MME根据第一承载标识执行核心网侧E-RAB承载，EPS承载，或S1承载的释放。
  30. 如权利要求21所述的基站设备，其特征在于，所述发送单元还用于向所述用户设备发送第三信息，所述第三信息用于指示所述用户设备使用基站中转方式进行数据传输。
  31. 一种网络节点，其特征在于，包括：
    发送单元，用于向第一基站发送第一信息，所述第一信息包括第一承载标识和专用信息，所述专用信息用于指示所述第一承载标识对应的第一承载支持 切换至直连链路无线承载。
  32. 如权利要求31所述的网络节点，其特征在于，所述专用信息包括一个或多个以下信息：指示信息，专用的服务质量标度值QCI标识，专用的分配和保留优先级ARP标识，或业务标识，其中，所述业务标识为支持切换至直连链路无线承载的业务的标识。
  33. 如权利要求31所述的网络节点，其特征在于，所述专用信息为隐式指示，所述隐式指示包含在所述第一信息或所述第一承载的配置信息中。
  34. 如权利要求31-33任意一项所述的网络节点，其特征在于，所述第一承载包括：数据无线承载，演进的UMTS陆地无线接入网无线接入承载E-RAB，演进分组系统EPS承载，或S1承载。
  35. 如权利要求31-34任意一项所述的网络节点，其特征在于，所述第一承载标识包括E-RAB标识。
  36. 如权利要求31-35任意一项所述的网络节点，其特征在于，所述网络节点包括移动性管理实体MME，第二基站，或终端设备。
  37. 如权利要求36所述的网络节点，其特征在于，所述网络节点为所述MME，所述第一信息还包括切换指示，所述切换指示用于指示所述第一基站根据所述切换指示、所述第一承载标识和所述专用信息，指示所述用户设备将所述第一承载标识对应的所述第一承载切换至直连链路无线承载。
  38. 如权利要求36所述的网络节点，其特征在于，所述网络节点为所述第二基站，所述网络节点还包括：
    接收单元，用于接收所述第一基站发送的第二信息，其中，所述第二信息包括所述第一承载标识和直连链路无线承载的配置信息；
    确定单元，用于确定所述第一承载支持切换至直连链路无线承载；
    发送单元还用于将所述直连链路无线承载的配置信息发送给所述用户设备，以使所述用户设备根据所述第一承载标识和所述直连链路无线承载的配置信息，将所述第一承载切换至直连链路无线承载。
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